am f4b3b73e: am c8626ba4: Merge "Dispose of ash."
* commit 'f4b3b73e95422afe79d5c5e7d28b0fcdfeaa7e88':
Dispose of ash.
diff --git a/liblinenoise/Android.mk b/liblinenoise/Android.mk
deleted file mode 100644
index b32a5f1..0000000
--- a/liblinenoise/Android.mk
+++ /dev/null
@@ -1,12 +0,0 @@
-LOCAL_PATH:= $(call my-dir)
-include $(CLEAR_VARS)
-
-# Static library
-# ========================================================
-
-include $(CLEAR_VARS)
-LOCAL_MODULE:= liblinenoise
-LOCAL_SRC_FILES := linenoise.c
-
-
-include $(BUILD_STATIC_LIBRARY)
diff --git a/liblinenoise/MODULE_LICENSE_BSD_LIKE b/liblinenoise/MODULE_LICENSE_BSD_LIKE
deleted file mode 100644
index e69de29..0000000
--- a/liblinenoise/MODULE_LICENSE_BSD_LIKE
+++ /dev/null
diff --git a/liblinenoise/NOTICE b/liblinenoise/NOTICE
deleted file mode 100644
index f61419e..0000000
--- a/liblinenoise/NOTICE
+++ /dev/null
@@ -1,28 +0,0 @@
-Copyright (c) 2010, Salvatore Sanfilippo <antirez at gmail dot com>
-All rights reserved.
-
-Redistribution and use in source and binary forms, with or without
-modification, are permitted provided that the following conditions are met:
-
- * Redistributions of source code must retain the above copyright notice,
- this list of conditions and the following disclaimer.
-
- * Redistributions in binary form must reproduce the above copyright
- notice, this list of conditions and the following disclaimer in the
- documentation and/or other materials provided with the distribution.
-
- * Neither the name of Redis nor the names of its contributors may be used
- to endorse or promote products derived from this software without
- specific prior written permission.
-
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
-AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
-ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
-LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
-CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
-SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
-INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
-CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
-ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
-POSSIBILITY OF SUCH DAMAGE.
\ No newline at end of file
diff --git a/liblinenoise/linenoise.c b/liblinenoise/linenoise.c
deleted file mode 100644
index 4f6775c..0000000
--- a/liblinenoise/linenoise.c
+++ /dev/null
@@ -1,449 +0,0 @@
-/* linenoise.c -- guerrilla line editing library against the idea that a
- * line editing lib needs to be 20,000 lines of C code.
- *
- * You can find the latest source code at:
- *
- * http://github.com/antirez/linenoise
- *
- * Does a number of crazy assumptions that happen to be true in 99.9999% of
- * the 2010 UNIX computers around.
- *
- * Copyright (c) 2010, Salvatore Sanfilippo <antirez at gmail dot com>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * * Redistributions of source code must retain the above copyright notice,
- * this list of conditions and the following disclaimer.
- * * Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * * Neither the name of Redis nor the names of its contributors may be used
- * to endorse or promote products derived from this software without
- * specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- *
- * References:
- * - http://invisible-island.net/xterm/ctlseqs/ctlseqs.html
- * - http://www.3waylabs.com/nw/WWW/products/wizcon/vt220.html
- *
- * Todo list:
- * - Switch to gets() if $TERM is something we can't support.
- * - Filter bogus Ctrl+<char> combinations.
- * - Win32 support
- *
- * Bloat:
- * - Completion?
- * - History search like Ctrl+r in readline?
- *
- * List of escape sequences used by this program, we do everything just
- * with three sequences. In order to be so cheap we may have some
- * flickering effect with some slow terminal, but the lesser sequences
- * the more compatible.
- *
- * CHA (Cursor Horizontal Absolute)
- * Sequence: ESC [ n G
- * Effect: moves cursor to column n
- *
- * EL (Erase Line)
- * Sequence: ESC [ n K
- * Effect: if n is 0 or missing, clear from cursor to end of line
- * Effect: if n is 1, clear from beginning of line to cursor
- * Effect: if n is 2, clear entire line
- *
- * CUF (CUrsor Forward)
- * Sequence: ESC [ n C
- * Effect: moves cursor forward of n chars
- *
- */
-
-#include <termios.h>
-#include <unistd.h>
-#include <stdlib.h>
-#include <stdio.h>
-#include <errno.h>
-#include <string.h>
-#include <stdlib.h>
-#include <sys/types.h>
-#include <sys/ioctl.h>
-#include <unistd.h>
-
-#define LINENOISE_MAX_LINE 4096
-static char *unsupported_term[] = {"dumb","cons25",NULL};
-
-static struct termios orig_termios; /* in order to restore at exit */
-static int rawmode = 0; /* for atexit() function to check if restore is needed*/
-static int atexit_registered = 0; /* register atexit just 1 time */
-static int history_max_len = 100;
-static int history_len = 0;
-char **history = NULL;
-
-static void linenoiseAtExit(void);
-int linenoiseHistoryAdd(const char *line);
-
-static int isUnsupportedTerm(void) {
- char *term = getenv("TERM");
- int j;
-
- if (term == NULL) return 0;
- for (j = 0; unsupported_term[j]; j++)
- if (!strcasecmp(term,unsupported_term[j])) return 1;
- return 0;
-}
-
-static void freeHistory(void) {
- if (history) {
- int j;
-
- for (j = 0; j < history_len; j++)
- free(history[j]);
- free(history);
- }
-}
-
-static int enableRawMode(int fd) {
- struct termios raw;
-
- if (!isatty(STDIN_FILENO)) goto fatal;
- if (!atexit_registered) {
- atexit(linenoiseAtExit);
- atexit_registered = 1;
- }
- if (tcgetattr(fd,&orig_termios) == -1) goto fatal;
-
- raw = orig_termios; /* modify the original mode */
- /* input modes: no break, no CR to NL, no parity check, no strip char,
- * no start/stop output control. */
- raw.c_iflag &= ~(BRKINT | ICRNL | INPCK | ISTRIP | IXON);
- /* output modes - disable post processing */
- raw.c_oflag &= ~(OPOST);
- /* control modes - set 8 bit chars */
- raw.c_cflag |= (CS8);
- /* local modes - choing off, canonical off, no extended functions,
- * no signal chars (^Z,^C) */
- raw.c_lflag &= ~(ECHO | ICANON | IEXTEN | ISIG);
- /* control chars - set return condition: min number of bytes and timer.
- * We want read to return every single byte, without timeout. */
- raw.c_cc[VMIN] = 1; raw.c_cc[VTIME] = 0; /* 1 byte, no timer */
-
- /* put terminal in raw mode */
- if (tcsetattr(fd,TCSADRAIN,&raw) < 0) goto fatal;
- rawmode = 1;
- return 0;
-
-fatal:
- errno = ENOTTY;
- return -1;
-}
-
-static void disableRawMode(int fd) {
- /* Don't even check the return value as it's too late. */
- if (rawmode && tcsetattr(fd,TCSADRAIN,&orig_termios) != -1)
- rawmode = 0;
-}
-
-/* At exit we'll try to fix the terminal to the initial conditions. */
-static void linenoiseAtExit(void) {
- disableRawMode(STDIN_FILENO);
- freeHistory();
-}
-
-static int getColumns(void) {
- struct winsize ws;
-
- if (ioctl(1, TIOCGWINSZ, &ws) == -1) return 4096;
- if (ws.ws_col == 0) {
- return 4096;
- }
- return ws.ws_col;
-}
-
-static int effectiveLen(const char* prompt) {
- int col = 0;
- char c;
- // TODO: Handle escape sequences.
- while ( (c = *prompt++) != 0 ) {
- if (c == '\n') {
- col = 0;
- } else {
- col++;
- }
- }
- return col;
-}
-
-static void refreshLine(int fd, const char *prompt, char *buf, size_t len, size_t pos, size_t cols) {
- char seq[64];
- size_t plen = effectiveLen(prompt);
-
- while((plen+pos) >= cols) {
- buf++;
- len--;
- pos--;
- }
- while (plen+len > cols) {
- len--;
- }
-
- /* Cursor to left edge */
- snprintf(seq,64,"\x1b[0G");
- if (write(fd,seq,strlen(seq)) == -1) return;
- /* Write the prompt and the current buffer content */
- if (write(fd,prompt,strlen(prompt)) == -1) return;
- if (write(fd,buf,len) == -1) return;
- /* Erase to right */
- snprintf(seq,64,"\x1b[0K");
- if (write(fd,seq,strlen(seq)) == -1) return;
- /* Move cursor to original position. */
- snprintf(seq,64,"\x1b[0G\x1b[%dC", (int)(pos+plen));
- if (write(fd,seq,strlen(seq)) == -1) return;
-}
-
-static int linenoisePrompt(int fd, char *buf, size_t buflen, const char *prompt) {
- size_t plen = strlen(prompt);
- size_t pos = 0;
- size_t len = 0;
- size_t cols = getColumns();
- int history_index = 0;
-
- buf[0] = '\0';
- buflen--; /* Make sure there is always space for the nulterm */
-
- /* The latest history entry is always our current buffer, that
- * initially is just an empty string. */
- linenoiseHistoryAdd("");
-
- if (write(fd,prompt,plen) == -1) return -1;
- while(1) {
- char c;
- int nread;
- char seq[2];
-
- nread = read(fd,&c,1);
- if (nread <= 0) return len;
- switch(c) {
- case 10: /* line feed. */
- case 13: /* enter */
- history_len--;
- return len;
- case 4: /* ctrl-d */
- history_len--;
- return (len == 0) ? -1 : (int)len;
- case 3: /* ctrl-c */
- errno = EAGAIN;
- return -1;
- case 127: /* backspace */
- case 8: /* ctrl-h */
- if (pos > 0 && len > 0) {
- memmove(buf+pos-1,buf+pos,len-pos);
- pos--;
- len--;
- buf[len] = '\0';
- refreshLine(fd,prompt,buf,len,pos,cols);
- }
- break;
- case 20: /* ctrl-t */
- if (pos > 0 && pos < len) {
- int aux = buf[pos-1];
- buf[pos-1] = buf[pos];
- buf[pos] = aux;
- if (pos != len-1) pos++;
- refreshLine(fd,prompt,buf,len,pos,cols);
- }
- break;
- case 2: /* ctrl-b */
- goto left_arrow;
- case 6: /* ctrl-f */
- goto right_arrow;
- case 16: /* ctrl-p */
- seq[1] = 65;
- goto up_down_arrow;
- case 14: /* ctrl-n */
- seq[1] = 66;
- goto up_down_arrow;
- break;
- case 27: /* escape sequence */
- if (read(fd,seq,2) == -1) break;
- if (seq[0] == 91 && seq[1] == 68) {
-left_arrow:
- /* left arrow */
- if (pos > 0) {
- pos--;
- refreshLine(fd,prompt,buf,len,pos,cols);
- }
- } else if (seq[0] == 91 && seq[1] == 67) {
-right_arrow:
- /* right arrow */
- if (pos != len) {
- pos++;
- refreshLine(fd,prompt,buf,len,pos,cols);
- }
- } else if (seq[0] == 91 && (seq[1] == 65 || seq[1] == 66)) {
-up_down_arrow:
- /* up and down arrow: history */
- if (history_len > 1) {
- /* Update the current history entry before to
- * overwrite it with tne next one. */
- free(history[history_len-1-history_index]);
- history[history_len-1-history_index] = strdup(buf);
- /* Show the new entry */
- history_index += (seq[1] == 65) ? 1 : -1;
- if (history_index < 0) {
- history_index = 0;
- break;
- } else if (history_index >= history_len) {
- history_index = history_len-1;
- break;
- }
- strncpy(buf,history[history_len-1-history_index],buflen);
- buf[buflen] = '\0';
- len = pos = strlen(buf);
- refreshLine(fd,prompt,buf,len,pos,cols);
- }
- }
- break;
- default:
- if (len < buflen) {
- if (len == pos) {
- buf[pos] = c;
- pos++;
- len++;
- buf[len] = '\0';
- if (plen+len < cols) {
- /* Avoid a full update of the line in the
- * trivial case. */
- if (write(fd,&c,1) == -1) return -1;
- } else {
- refreshLine(fd,prompt,buf,len,pos,cols);
- }
- } else {
- memmove(buf+pos+1,buf+pos,len-pos);
- buf[pos] = c;
- len++;
- pos++;
- buf[len] = '\0';
- refreshLine(fd,prompt,buf,len,pos,cols);
- }
- }
- break;
- case 21: /* Ctrl+u, delete the whole line. */
- buf[0] = '\0';
- pos = len = 0;
- refreshLine(fd,prompt,buf,len,pos,cols);
- break;
- case 11: /* Ctrl+k, delete from current to end of line. */
- buf[pos] = '\0';
- len = pos;
- refreshLine(fd,prompt,buf,len,pos,cols);
- break;
- case 1: /* Ctrl+a, go to the start of the line */
- pos = 0;
- refreshLine(fd,prompt,buf,len,pos,cols);
- break;
- case 5: /* ctrl+e, go to the end of the line */
- pos = len;
- refreshLine(fd,prompt,buf,len,pos,cols);
- break;
- }
- }
- return len;
-}
-
-static int linenoiseRaw(char *buf, size_t buflen, const char *prompt) {
- int fd = STDIN_FILENO;
- int count;
-
- if (buflen == 0) {
- errno = EINVAL;
- return -1;
- }
- if (!isatty(STDIN_FILENO)) {
- if (fgets(buf, buflen, stdin) == NULL) return -1;
- count = strlen(buf);
- if (count && buf[count-1] == '\n') {
- count--;
- buf[count] = '\0';
- }
- } else {
- if (enableRawMode(fd) == -1) return -1;
- count = linenoisePrompt(fd, buf, buflen, prompt);
- disableRawMode(fd);
- }
- return count;
-}
-
-char *linenoise(const char *prompt) {
- char buf[LINENOISE_MAX_LINE];
- int count;
-
- if (isUnsupportedTerm()) {
- size_t len;
-
- printf("%s",prompt);
- fflush(stdout);
- if (fgets(buf,LINENOISE_MAX_LINE,stdin) == NULL) return NULL;
- len = strlen(buf);
- while(len && (buf[len-1] == '\n' || buf[len-1] == '\r')) {
- len--;
- buf[len] = '\0';
- }
- return strdup(buf);
- } else {
- count = linenoiseRaw(buf,LINENOISE_MAX_LINE,prompt);
- if (count == -1) return NULL;
- return strdup(buf);
- }
-}
-
-/* Using a circular buffer is smarter, but a bit more complex to handle. */
-int linenoiseHistoryAdd(const char *line) {
- char *linecopy;
-
- if (history_max_len == 0) return 0;
- if (history == 0) {
- history = malloc(sizeof(char*)*history_max_len);
- if (history == NULL) return 0;
- memset(history,0,(sizeof(char*)*history_max_len));
- }
- linecopy = strdup(line);
- if (!linecopy) return 0;
- if (history_len == history_max_len) {
- memmove(history,history+1,sizeof(char*)*(history_max_len-1));
- history_len--;
- }
- history[history_len] = linecopy;
- history_len++;
- return 1;
-}
-
-int linenoiseHistorySetMaxLen(int len) {
- char **new;
-
- if (len < 1) return 0;
- if (history) {
- int tocopy = history_len;
-
- new = malloc(sizeof(char*)*len);
- if (new == NULL) return 0;
- if (len < tocopy) tocopy = len;
- memcpy(new,history+(history_max_len-tocopy), sizeof(char*)*tocopy);
- free(history);
- history = new;
- }
- history_max_len = len;
- if (history_len > history_max_len)
- history_len = history_max_len;
- return 1;
-}
diff --git a/liblinenoise/linenoise.h b/liblinenoise/linenoise.h
deleted file mode 100644
index 57bf9d1..0000000
--- a/liblinenoise/linenoise.h
+++ /dev/null
@@ -1,41 +0,0 @@
-/* linenoise.h -- guerrilla line editing library against the idea that a
- * line editing lib needs to be 20,000 lines of C code.
- *
- * See linenoise.c for more information.
- *
- * Copyright (c) 2010, Salvatore Sanfilippo <antirez at gmail dot com>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * * Redistributions of source code must retain the above copyright notice,
- * this list of conditions and the following disclaimer.
- * * Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * * Neither the name of Redis nor the names of its contributors may be used
- * to endorse or promote products derived from this software without
- * specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- */
-
-#ifndef __LINENOISE_H
-#define __LINENOISE_H
-
-char *linenoise(const char *prompt);
-int linenoiseHistoryAdd(const char *line);
-int linenoiseHistorySetMaxLen(int len);
-
-#endif /* __LINENOISE_H */
diff --git a/sh/Android.mk b/sh/Android.mk
index dcd13d8..ed6291a 100644
--- a/sh/Android.mk
+++ b/sh/Android.mk
@@ -1,61 +1,5 @@
-LOCAL_PATH:= $(call my-dir)
-include $(CLEAR_VARS)
-
-LOCAL_SRC_FILES:= \
- alias.c \
- arith.c \
- arith_lex.c \
- builtins.c \
- cd.c \
- error.c \
- eval.c \
- exec.c \
- expand.c \
- input.c \
- jobs.c \
- main.c \
- memalloc.c \
- miscbltin.c \
- mystring.c \
- nodes.c \
- options.c \
- parser.c \
- redir.c \
- show.c \
- syntax.c \
- trap.c \
- output.c \
- var.c \
- bltin/echo.c \
- init.c
-
-LOCAL_MODULE:= ash
-LOCAL_MODULE_TAGS:= shell_ash
-
-LOCAL_CFLAGS += -DSHELL -DWITH_LINENOISE
-
-LOCAL_STATIC_LIBRARIES := liblinenoise
-
-LOCAL_C_INCLUDES += system/core/liblinenoise
-
-make_ash_files: PRIVATE_SRC_FILES := $(SRC_FILES)
-make_ash_files: PRIVATE_CFLAGS := $(LOCAL_CFLAGS)
-make_ash_files:
- p4 edit arith.c arith_lex.c arith.h builtins.h builtins.c
- p4 edit init.c nodes.c nodes.h token.h
- sh ./mktokens
- bison -o arith.c arith.y
- flex -o arith_lex.c arith_lex.l
- perl -ne 'print if ( /^\#\s*define\s+ARITH/ );' < arith.c > arith.h
- sh ./mkbuiltins shell.h builtins.def . -Wall -O2
- sh ./mknodes.sh nodetypes nodes.c.pat .
- sh ./mkinit.sh $(PRIVATE_SRC_FILES)
-
-include $(BUILD_EXECUTABLE)
-
-
-# create /system/bin/sh symlink to $(TARGET_SHELL)
-# not the optimal place for this, but a fitting one
+# Create the /system/bin/sh symlink to $(TARGET_SHELL).
+# Currently, Android's shell is external/mksh.
OUTSYSTEMBINSH := $(TARGET_OUT)/bin/sh
LOCAL_MODULE := systembinsh
diff --git a/sh/MODULE_LICENSE_BSD b/sh/MODULE_LICENSE_BSD
deleted file mode 100644
index e69de29..0000000
--- a/sh/MODULE_LICENSE_BSD
+++ /dev/null
diff --git a/sh/NOTICE b/sh/NOTICE
deleted file mode 100644
index 49a66d2..0000000
--- a/sh/NOTICE
+++ /dev/null
@@ -1,31 +0,0 @@
-Copyright (c) 1991, 1993
- The Regents of the University of California. All rights reserved.
-
-This code is derived from software contributed to Berkeley by
-Kenneth Almquist.
-
-Redistribution and use in source and binary forms, with or without
-modification, are permitted provided that the following conditions
-are met:
-1. Redistributions of source code must retain the above copyright
- notice, this list of conditions and the following disclaimer.
-2. Redistributions in binary form must reproduce the above copyright
- notice, this list of conditions and the following disclaimer in the
- documentation and/or other materials provided with the distribution.
-3. Neither the name of the University nor the names of its contributors
- may be used to endorse or promote products derived from this software
- without specific prior written permission.
-
-THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
-ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
-ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
-FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
-OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
-HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
-LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
-OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
-SUCH DAMAGE.
-
-
diff --git a/sh/TOUR b/sh/TOUR
deleted file mode 100644
index f5c00c4..0000000
--- a/sh/TOUR
+++ /dev/null
@@ -1,357 +0,0 @@
-# $NetBSD: TOUR,v 1.8 1996/10/16 14:24:56 christos Exp $
-# @(#)TOUR 8.1 (Berkeley) 5/31/93
-
-NOTE -- This is the original TOUR paper distributed with ash and
-does not represent the current state of the shell. It is provided anyway
-since it provides helpful information for how the shell is structured,
-but be warned that things have changed -- the current shell is
-still under development.
-
-================================================================
-
- A Tour through Ash
-
- Copyright 1989 by Kenneth Almquist.
-
-
-DIRECTORIES: The subdirectory bltin contains commands which can
-be compiled stand-alone. The rest of the source is in the main
-ash directory.
-
-SOURCE CODE GENERATORS: Files whose names begin with "mk" are
-programs that generate source code. A complete list of these
-programs is:
-
- program intput files generates
- ------- ------------ ---------
- mkbuiltins builtins builtins.h builtins.c
- mkinit *.c init.c
- mknodes nodetypes nodes.h nodes.c
- mksignames - signames.h signames.c
- mksyntax - syntax.h syntax.c
- mktokens - token.h
- bltin/mkexpr unary_op binary_op operators.h operators.c
-
-There are undoubtedly too many of these. Mkinit searches all the
-C source files for entries looking like:
-
- INIT {
- x = 1; /* executed during initialization */
- }
-
- RESET {
- x = 2; /* executed when the shell does a longjmp
- back to the main command loop */
- }
-
- SHELLPROC {
- x = 3; /* executed when the shell runs a shell procedure */
- }
-
-It pulls this code out into routines which are when particular
-events occur. The intent is to improve modularity by isolating
-the information about which modules need to be explicitly
-initialized/reset within the modules themselves.
-
-Mkinit recognizes several constructs for placing declarations in
-the init.c file.
- INCLUDE "file.h"
-includes a file. The storage class MKINIT makes a declaration
-available in the init.c file, for example:
- MKINIT int funcnest; /* depth of function calls */
-MKINIT alone on a line introduces a structure or union declara-
-tion:
- MKINIT
- struct redirtab {
- short renamed[10];
- };
-Preprocessor #define statements are copied to init.c without any
-special action to request this.
-
-INDENTATION: The ash source is indented in multiples of six
-spaces. The only study that I have heard of on the subject con-
-cluded that the optimal amount to indent is in the range of four
-to six spaces. I use six spaces since it is not too big a jump
-from the widely used eight spaces. If you really hate six space
-indentation, use the adjind (source included) program to change
-it to something else.
-
-EXCEPTIONS: Code for dealing with exceptions appears in
-exceptions.c. The C language doesn't include exception handling,
-so I implement it using setjmp and longjmp. The global variable
-exception contains the type of exception. EXERROR is raised by
-calling error. EXINT is an interrupt. EXSHELLPROC is an excep-
-tion which is raised when a shell procedure is invoked. The pur-
-pose of EXSHELLPROC is to perform the cleanup actions associated
-with other exceptions. After these cleanup actions, the shell
-can interpret a shell procedure itself without exec'ing a new
-copy of the shell.
-
-INTERRUPTS: In an interactive shell, an interrupt will cause an
-EXINT exception to return to the main command loop. (Exception:
-EXINT is not raised if the user traps interrupts using the trap
-command.) The INTOFF and INTON macros (defined in exception.h)
-provide uninterruptable critical sections. Between the execution
-of INTOFF and the execution of INTON, interrupt signals will be
-held for later delivery. INTOFF and INTON can be nested.
-
-MEMALLOC.C: Memalloc.c defines versions of malloc and realloc
-which call error when there is no memory left. It also defines a
-stack oriented memory allocation scheme. Allocating off a stack
-is probably more efficient than allocation using malloc, but the
-big advantage is that when an exception occurs all we have to do
-to free up the memory in use at the time of the exception is to
-restore the stack pointer. The stack is implemented using a
-linked list of blocks.
-
-STPUTC: If the stack were contiguous, it would be easy to store
-strings on the stack without knowing in advance how long the
-string was going to be:
- p = stackptr;
- *p++ = c; /* repeated as many times as needed */
- stackptr = p;
-The folloing three macros (defined in memalloc.h) perform these
-operations, but grow the stack if you run off the end:
- STARTSTACKSTR(p);
- STPUTC(c, p); /* repeated as many times as needed */
- grabstackstr(p);
-
-We now start a top-down look at the code:
-
-MAIN.C: The main routine performs some initialization, executes
-the user's profile if necessary, and calls cmdloop. Cmdloop is
-repeatedly parses and executes commands.
-
-OPTIONS.C: This file contains the option processing code. It is
-called from main to parse the shell arguments when the shell is
-invoked, and it also contains the set builtin. The -i and -j op-
-tions (the latter turns on job control) require changes in signal
-handling. The routines setjobctl (in jobs.c) and setinteractive
-(in trap.c) are called to handle changes to these options.
-
-PARSING: The parser code is all in parser.c. A recursive des-
-cent parser is used. Syntax tables (generated by mksyntax) are
-used to classify characters during lexical analysis. There are
-three tables: one for normal use, one for use when inside single
-quotes, and one for use when inside double quotes. The tables
-are machine dependent because they are indexed by character vari-
-ables and the range of a char varies from machine to machine.
-
-PARSE OUTPUT: The output of the parser consists of a tree of
-nodes. The various types of nodes are defined in the file node-
-types.
-
-Nodes of type NARG are used to represent both words and the con-
-tents of here documents. An early version of ash kept the con-
-tents of here documents in temporary files, but keeping here do-
-cuments in memory typically results in significantly better per-
-formance. It would have been nice to make it an option to use
-temporary files for here documents, for the benefit of small
-machines, but the code to keep track of when to delete the tem-
-porary files was complex and I never fixed all the bugs in it.
-(AT&T has been maintaining the Bourne shell for more than ten
-years, and to the best of my knowledge they still haven't gotten
-it to handle temporary files correctly in obscure cases.)
-
-The text field of a NARG structure points to the text of the
-word. The text consists of ordinary characters and a number of
-special codes defined in parser.h. The special codes are:
-
- CTLVAR Variable substitution
- CTLENDVAR End of variable substitution
- CTLBACKQ Command substitution
- CTLBACKQ|CTLQUOTE Command substitution inside double quotes
- CTLESC Escape next character
-
-A variable substitution contains the following elements:
-
- CTLVAR type name '=' [ alternative-text CTLENDVAR ]
-
-The type field is a single character specifying the type of sub-
-stitution. The possible types are:
-
- VSNORMAL $var
- VSMINUS ${var-text}
- VSMINUS|VSNUL ${var:-text}
- VSPLUS ${var+text}
- VSPLUS|VSNUL ${var:+text}
- VSQUESTION ${var?text}
- VSQUESTION|VSNUL ${var:?text}
- VSASSIGN ${var=text}
- VSASSIGN|VSNUL ${var=text}
-
-In addition, the type field will have the VSQUOTE flag set if the
-variable is enclosed in double quotes. The name of the variable
-comes next, terminated by an equals sign. If the type is not
-VSNORMAL, then the text field in the substitution follows, ter-
-minated by a CTLENDVAR byte.
-
-Commands in back quotes are parsed and stored in a linked list.
-The locations of these commands in the string are indicated by
-CTLBACKQ and CTLBACKQ+CTLQUOTE characters, depending upon whether
-the back quotes were enclosed in double quotes.
-
-The character CTLESC escapes the next character, so that in case
-any of the CTL characters mentioned above appear in the input,
-they can be passed through transparently. CTLESC is also used to
-escape '*', '?', '[', and '!' characters which were quoted by the
-user and thus should not be used for file name generation.
-
-CTLESC characters have proved to be particularly tricky to get
-right. In the case of here documents which are not subject to
-variable and command substitution, the parser doesn't insert any
-CTLESC characters to begin with (so the contents of the text
-field can be written without any processing). Other here docu-
-ments, and words which are not subject to splitting and file name
-generation, have the CTLESC characters removed during the vari-
-able and command substitution phase. Words which are subject
-splitting and file name generation have the CTLESC characters re-
-moved as part of the file name phase.
-
-EXECUTION: Command execution is handled by the following files:
- eval.c The top level routines.
- redir.c Code to handle redirection of input and output.
- jobs.c Code to handle forking, waiting, and job control.
- exec.c Code to to path searches and the actual exec sys call.
- expand.c Code to evaluate arguments.
- var.c Maintains the variable symbol table. Called from expand.c.
-
-EVAL.C: Evaltree recursively executes a parse tree. The exit
-status is returned in the global variable exitstatus. The alter-
-native entry evalbackcmd is called to evaluate commands in back
-quotes. It saves the result in memory if the command is a buil-
-tin; otherwise it forks off a child to execute the command and
-connects the standard output of the child to a pipe.
-
-JOBS.C: To create a process, you call makejob to return a job
-structure, and then call forkshell (passing the job structure as
-an argument) to create the process. Waitforjob waits for a job
-to complete. These routines take care of process groups if job
-control is defined.
-
-REDIR.C: Ash allows file descriptors to be redirected and then
-restored without forking off a child process. This is accom-
-plished by duplicating the original file descriptors. The redir-
-tab structure records where the file descriptors have be dupli-
-cated to.
-
-EXEC.C: The routine find_command locates a command, and enters
-the command in the hash table if it is not already there. The
-third argument specifies whether it is to print an error message
-if the command is not found. (When a pipeline is set up,
-find_command is called for all the commands in the pipeline be-
-fore any forking is done, so to get the commands into the hash
-table of the parent process. But to make command hashing as
-transparent as possible, we silently ignore errors at that point
-and only print error messages if the command cannot be found
-later.)
-
-The routine shellexec is the interface to the exec system call.
-
-EXPAND.C: Arguments are processed in three passes. The first
-(performed by the routine argstr) performs variable and command
-substitution. The second (ifsbreakup) performs word splitting
-and the third (expandmeta) performs file name generation. If the
-"/u" directory is simulated, then when "/u/username" is replaced
-by the user's home directory, the flag "didudir" is set. This
-tells the cd command that it should print out the directory name,
-just as it would if the "/u" directory were implemented using
-symbolic links.
-
-VAR.C: Variables are stored in a hash table. Probably we should
-switch to extensible hashing. The variable name is stored in the
-same string as the value (using the format "name=value") so that
-no string copying is needed to create the environment of a com-
-mand. Variables which the shell references internally are preal-
-located so that the shell can reference the values of these vari-
-ables without doing a lookup.
-
-When a program is run, the code in eval.c sticks any environment
-variables which precede the command (as in "PATH=xxx command") in
-the variable table as the simplest way to strip duplicates, and
-then calls "environment" to get the value of the environment.
-There are two consequences of this. First, if an assignment to
-PATH precedes the command, the value of PATH before the assign-
-ment must be remembered and passed to shellexec. Second, if the
-program turns out to be a shell procedure, the strings from the
-environment variables which preceded the command must be pulled
-out of the table and replaced with strings obtained from malloc,
-since the former will automatically be freed when the stack (see
-the entry on memalloc.c) is emptied.
-
-BUILTIN COMMANDS: The procedures for handling these are scat-
-tered throughout the code, depending on which location appears
-most appropriate. They can be recognized because their names al-
-ways end in "cmd". The mapping from names to procedures is
-specified in the file builtins, which is processed by the mkbuil-
-tins command.
-
-A builtin command is invoked with argc and argv set up like a
-normal program. A builtin command is allowed to overwrite its
-arguments. Builtin routines can call nextopt to do option pars-
-ing. This is kind of like getopt, but you don't pass argc and
-argv to it. Builtin routines can also call error. This routine
-normally terminates the shell (or returns to the main command
-loop if the shell is interactive), but when called from a builtin
-command it causes the builtin command to terminate with an exit
-status of 2.
-
-The directory bltins contains commands which can be compiled in-
-dependently but can also be built into the shell for efficiency
-reasons. The makefile in this directory compiles these programs
-in the normal fashion (so that they can be run regardless of
-whether the invoker is ash), but also creates a library named
-bltinlib.a which can be linked with ash. The header file bltin.h
-takes care of most of the differences between the ash and the
-stand-alone environment. The user should call the main routine
-"main", and #define main to be the name of the routine to use
-when the program is linked into ash. This #define should appear
-before bltin.h is included; bltin.h will #undef main if the pro-
-gram is to be compiled stand-alone.
-
-CD.C: This file defines the cd and pwd builtins. The pwd com-
-mand runs /bin/pwd the first time it is invoked (unless the user
-has already done a cd to an absolute pathname), but then
-remembers the current directory and updates it when the cd com-
-mand is run, so subsequent pwd commands run very fast. The main
-complication in the cd command is in the docd command, which
-resolves symbolic links into actual names and informs the user
-where the user ended up if he crossed a symbolic link.
-
-SIGNALS: Trap.c implements the trap command. The routine set-
-signal figures out what action should be taken when a signal is
-received and invokes the signal system call to set the signal ac-
-tion appropriately. When a signal that a user has set a trap for
-is caught, the routine "onsig" sets a flag. The routine dotrap
-is called at appropriate points to actually handle the signal.
-When an interrupt is caught and no trap has been set for that
-signal, the routine "onint" in error.c is called.
-
-OUTPUT: Ash uses it's own output routines. There are three out-
-put structures allocated. "Output" represents the standard out-
-put, "errout" the standard error, and "memout" contains output
-which is to be stored in memory. This last is used when a buil-
-tin command appears in backquotes, to allow its output to be col-
-lected without doing any I/O through the UNIX operating system.
-The variables out1 and out2 normally point to output and errout,
-respectively, but they are set to point to memout when appropri-
-ate inside backquotes.
-
-INPUT: The basic input routine is pgetc, which reads from the
-current input file. There is a stack of input files; the current
-input file is the top file on this stack. The code allows the
-input to come from a string rather than a file. (This is for the
--c option and the "." and eval builtin commands.) The global
-variable plinno is saved and restored when files are pushed and
-popped from the stack. The parser routines store the number of
-the current line in this variable.
-
-DEBUGGING: If DEBUG is defined in shell.h, then the shell will
-write debugging information to the file $HOME/trace. Most of
-this is done using the TRACE macro, which takes a set of printf
-arguments inside two sets of parenthesis. Example:
-"TRACE(("n=%d0, n))". The double parenthesis are necessary be-
-cause the preprocessor can't handle functions with a variable
-number of arguments. Defining DEBUG also causes the shell to
-generate a core dump if it is sent a quit signal. The tracing
-code is in show.c.
diff --git a/sh/ThirdPartyProject.prop b/sh/ThirdPartyProject.prop
deleted file mode 100644
index eb9167e..0000000
--- a/sh/ThirdPartyProject.prop
+++ /dev/null
@@ -1,9 +0,0 @@
-# Copyright 2010 Google Inc. All Rights Reserved.
-#Fri Jul 16 10:03:08 PDT 2010
-currentVersion=Unknown
-version=1.17
-isNative=true
-name=ash
-keywords=ash
-onDevice=true
-homepage=http\://www.in-ulm.de/~mascheck/various/ash/
diff --git a/sh/alias.c b/sh/alias.c
deleted file mode 100644
index 59a3dc1..0000000
--- a/sh/alias.c
+++ /dev/null
@@ -1,273 +0,0 @@
-/* $NetBSD: alias.c,v 1.12 2003/08/07 09:05:29 agc Exp $ */
-
-/*-
- * Copyright (c) 1993
- * The Regents of the University of California. All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Kenneth Almquist.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <sys/cdefs.h>
-#ifndef lint
-#if 0
-static char sccsid[] = "@(#)alias.c 8.3 (Berkeley) 5/4/95";
-#else
-__RCSID("$NetBSD: alias.c,v 1.12 2003/08/07 09:05:29 agc Exp $");
-#endif
-#endif /* not lint */
-
-#include <stdlib.h>
-#include "shell.h"
-#include "input.h"
-#include "output.h"
-#include "error.h"
-#include "memalloc.h"
-#include "mystring.h"
-#include "alias.h"
-#include "options.h" /* XXX for argptr (should remove?) */
-#include "var.h"
-
-#define ATABSIZE 39
-
-struct alias *atab[ATABSIZE];
-
-STATIC void setalias(char *, char *);
-STATIC int unalias(char *);
-STATIC struct alias **hashalias(char *);
-
-STATIC
-void
-setalias(char *name, char *val)
-{
- struct alias *ap, **app;
-
- app = hashalias(name);
- for (ap = *app; ap; ap = ap->next) {
- if (equal(name, ap->name)) {
- INTOFF;
- ckfree(ap->val);
- ap->val = savestr(val);
- INTON;
- return;
- }
- }
- /* not found */
- INTOFF;
- ap = ckmalloc(sizeof (struct alias));
- ap->name = savestr(name);
- /*
- * XXX - HACK: in order that the parser will not finish reading the
- * alias value off the input before processing the next alias, we
- * dummy up an extra space at the end of the alias. This is a crock
- * and should be re-thought. The idea (if you feel inclined to help)
- * is to avoid alias recursions. The mechanism used is: when
- * expanding an alias, the value of the alias is pushed back on the
- * input as a string and a pointer to the alias is stored with the
- * string. The alias is marked as being in use. When the input
- * routine finishes reading the string, it markes the alias not
- * in use. The problem is synchronization with the parser. Since
- * it reads ahead, the alias is marked not in use before the
- * resulting token(s) is next checked for further alias sub. The
- * H A C K is that we add a little fluff after the alias value
- * so that the string will not be exhausted. This is a good
- * idea ------- ***NOT***
- */
-#ifdef notyet
- ap->val = savestr(val);
-#else /* hack */
- {
- int len = strlen(val);
- ap->val = ckmalloc(len + 2);
- memcpy(ap->val, val, len);
- ap->val[len] = ' '; /* fluff */
- ap->val[len+1] = '\0';
- }
-#endif
- ap->next = *app;
- *app = ap;
- INTON;
-}
-
-STATIC int
-unalias(char *name)
-{
- struct alias *ap, **app;
-
- app = hashalias(name);
-
- for (ap = *app; ap; app = &(ap->next), ap = ap->next) {
- if (equal(name, ap->name)) {
- /*
- * if the alias is currently in use (i.e. its
- * buffer is being used by the input routine) we
- * just null out the name instead of freeing it.
- * We could clear it out later, but this situation
- * is so rare that it hardly seems worth it.
- */
- if (ap->flag & ALIASINUSE)
- *ap->name = '\0';
- else {
- INTOFF;
- *app = ap->next;
- ckfree(ap->name);
- ckfree(ap->val);
- ckfree(ap);
- INTON;
- }
- return (0);
- }
- }
-
- return (1);
-}
-
-#ifdef mkinit
-MKINIT void rmaliases(void);
-
-SHELLPROC {
- rmaliases();
-}
-#endif
-
-void
-rmaliases(void)
-{
- struct alias *ap, *tmp;
- int i;
-
- INTOFF;
- for (i = 0; i < ATABSIZE; i++) {
- ap = atab[i];
- atab[i] = NULL;
- while (ap) {
- ckfree(ap->name);
- ckfree(ap->val);
- tmp = ap;
- ap = ap->next;
- ckfree(tmp);
- }
- }
- INTON;
-}
-
-struct alias *
-lookupalias(char *name, int check)
-{
- struct alias *ap = *hashalias(name);
-
- for (; ap; ap = ap->next) {
- if (equal(name, ap->name)) {
- if (check && (ap->flag & ALIASINUSE))
- return (NULL);
- return (ap);
- }
- }
-
- return (NULL);
-}
-
-char *
-get_alias_text(char *name)
-{
- struct alias *ap;
-
- ap = lookupalias(name, 0);
- if (ap == NULL)
- return NULL;
- return ap->val;
-}
-
-/*
- * TODO - sort output
- */
-int
-aliascmd(int argc, char **argv)
-{
- char *n, *v;
- int ret = 0;
- struct alias *ap;
-
- if (argc == 1) {
- int i;
-
- for (i = 0; i < ATABSIZE; i++)
- for (ap = atab[i]; ap; ap = ap->next) {
- if (*ap->name != '\0') {
- out1fmt("alias %s=", ap->name);
- print_quoted(ap->val);
- out1c('\n');
- }
- }
- return (0);
- }
- while ((n = *++argv) != NULL) {
- if ((v = strchr(n+1, '=')) == NULL) { /* n+1: funny ksh stuff */
- if ((ap = lookupalias(n, 0)) == NULL) {
- outfmt(out2, "alias: %s not found\n", n);
- ret = 1;
- } else {
- out1fmt("alias %s=", n);
- print_quoted(ap->val);
- out1c('\n');
- }
- } else {
- *v++ = '\0';
- setalias(n, v);
- }
- }
-
- return (ret);
-}
-
-int
-unaliascmd(int argc, char **argv)
-{
- int i;
-
- while ((i = nextopt("a")) != '\0') {
- if (i == 'a') {
- rmaliases();
- return (0);
- }
- }
- for (i = 0; *argptr; argptr++)
- i = unalias(*argptr);
-
- return (i);
-}
-
-STATIC struct alias **
-hashalias(char *p)
-{
- unsigned int hashval;
-
- hashval = *p << 4;
- while (*p)
- hashval+= *p++;
- return &atab[hashval % ATABSIZE];
-}
diff --git a/sh/alias.h b/sh/alias.h
deleted file mode 100644
index 7ce25f4..0000000
--- a/sh/alias.h
+++ /dev/null
@@ -1,50 +0,0 @@
-/* $NetBSD: alias.h,v 1.6 2003/08/07 09:05:29 agc Exp $ */
-
-/*-
- * Copyright (c) 1993
- * The Regents of the University of California. All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Kenneth Almquist.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * @(#)alias.h 8.2 (Berkeley) 5/4/95
- */
-
-#define ALIASINUSE 1
-
-struct alias {
- struct alias *next;
- char *name;
- char *val;
- int flag;
-};
-
-struct alias *lookupalias(char *, int);
-char *get_alias_text(char *);
-int aliascmd(int, char **);
-int unaliascmd(int, char **);
-void rmaliases(void);
diff --git a/sh/arith.c b/sh/arith.c
deleted file mode 100644
index f8f92a9..0000000
--- a/sh/arith.c
+++ /dev/null
@@ -1,1587 +0,0 @@
-/* A Bison parser, made by GNU Bison 1.875d. */
-
-/* Skeleton parser for Yacc-like parsing with Bison,
- Copyright (C) 1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2, or (at your option)
- any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
-
-/* As a special exception, when this file is copied by Bison into a
- Bison output file, you may use that output file without restriction.
- This special exception was added by the Free Software Foundation
- in version 1.24 of Bison. */
-
-/* Written by Richard Stallman by simplifying the original so called
- ``semantic'' parser. */
-
-/* All symbols defined below should begin with yy or YY, to avoid
- infringing on user name space. This should be done even for local
- variables, as they might otherwise be expanded by user macros.
- There are some unavoidable exceptions within include files to
- define necessary library symbols; they are noted "INFRINGES ON
- USER NAME SPACE" below. */
-
-/* Identify Bison output. */
-#define YYBISON 1
-
-/* Skeleton name. */
-#define YYSKELETON_NAME "yacc.c"
-
-/* Pure parsers. */
-#define YYPURE 0
-
-/* Using locations. */
-#define YYLSP_NEEDED 0
-
-
-
-/* Tokens. */
-#ifndef YYTOKENTYPE
-# define YYTOKENTYPE
- /* Put the tokens into the symbol table, so that GDB and other debuggers
- know about them. */
- enum yytokentype {
- ARITH_NUM = 258,
- ARITH_LPAREN = 259,
- ARITH_RPAREN = 260,
- ARITH_OR = 261,
- ARITH_AND = 262,
- ARITH_BOR = 263,
- ARITH_BXOR = 264,
- ARITH_BAND = 265,
- ARITH_NE = 266,
- ARITH_EQ = 267,
- ARITH_LE = 268,
- ARITH_GE = 269,
- ARITH_GT = 270,
- ARITH_LT = 271,
- ARITH_RSHIFT = 272,
- ARITH_LSHIFT = 273,
- ARITH_SUB = 274,
- ARITH_ADD = 275,
- ARITH_REM = 276,
- ARITH_DIV = 277,
- ARITH_MUL = 278,
- ARITH_BNOT = 279,
- ARITH_NOT = 280,
- ARITH_UNARYPLUS = 281,
- ARITH_UNARYMINUS = 282
- };
-#endif
-#define ARITH_NUM 258
-#define ARITH_LPAREN 259
-#define ARITH_RPAREN 260
-#define ARITH_OR 261
-#define ARITH_AND 262
-#define ARITH_BOR 263
-#define ARITH_BXOR 264
-#define ARITH_BAND 265
-#define ARITH_NE 266
-#define ARITH_EQ 267
-#define ARITH_LE 268
-#define ARITH_GE 269
-#define ARITH_GT 270
-#define ARITH_LT 271
-#define ARITH_RSHIFT 272
-#define ARITH_LSHIFT 273
-#define ARITH_SUB 274
-#define ARITH_ADD 275
-#define ARITH_REM 276
-#define ARITH_DIV 277
-#define ARITH_MUL 278
-#define ARITH_BNOT 279
-#define ARITH_NOT 280
-#define ARITH_UNARYPLUS 281
-#define ARITH_UNARYMINUS 282
-
-
-
-
-/* Copy the first part of user declarations. */
-#line 1 "arith.y"
-
-/* $NetBSD: arith.y,v 1.17 2003/09/17 17:33:36 jmmv Exp $ */
-
-/*-
- * Copyright (c) 1993
- * The Regents of the University of California. All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Kenneth Almquist.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <sys/cdefs.h>
-#ifndef lint
-#if 0
-static char sccsid[] = "@(#)arith.y 8.3 (Berkeley) 5/4/95";
-#else
-__RCSID("$NetBSD: arith.y,v 1.17 2003/09/17 17:33:36 jmmv Exp $");
-#endif
-#endif /* not lint */
-
-#include <stdlib.h>
-#include "expand.h"
-#include "shell.h"
-#include "error.h"
-#include "output.h"
-#include "memalloc.h"
-
-const char *arith_buf, *arith_startbuf;
-
-void yyerror(const char *);
-#ifdef TESTARITH
-int main(int , char *[]);
-int error(char *);
-#endif
-
-
-
-/* Enabling traces. */
-#ifndef YYDEBUG
-# define YYDEBUG 0
-#endif
-
-/* Enabling verbose error messages. */
-#ifdef YYERROR_VERBOSE
-# undef YYERROR_VERBOSE
-# define YYERROR_VERBOSE 1
-#else
-# define YYERROR_VERBOSE 0
-#endif
-
-#if ! defined (YYSTYPE) && ! defined (YYSTYPE_IS_DECLARED)
-typedef int YYSTYPE;
-# define yystype YYSTYPE /* obsolescent; will be withdrawn */
-# define YYSTYPE_IS_DECLARED 1
-# define YYSTYPE_IS_TRIVIAL 1
-#endif
-
-
-
-/* Copy the second part of user declarations. */
-
-
-/* Line 214 of yacc.c. */
-#line 202 "arith.c"
-
-#if ! defined (yyoverflow) || YYERROR_VERBOSE
-
-# ifndef YYFREE
-# define YYFREE free
-# endif
-# ifndef YYMALLOC
-# define YYMALLOC malloc
-# endif
-
-/* The parser invokes alloca or malloc; define the necessary symbols. */
-
-# ifdef YYSTACK_USE_ALLOCA
-# if YYSTACK_USE_ALLOCA
-# define YYSTACK_ALLOC alloca
-# endif
-# else
-# if defined (alloca) || defined (_ALLOCA_H)
-# define YYSTACK_ALLOC alloca
-# else
-# ifdef __GNUC__
-# define YYSTACK_ALLOC __builtin_alloca
-# endif
-# endif
-# endif
-
-# ifdef YYSTACK_ALLOC
- /* Pacify GCC's `empty if-body' warning. */
-# define YYSTACK_FREE(Ptr) do { /* empty */; } while (0)
-# else
-# if defined (__STDC__) || defined (__cplusplus)
-# include <stdlib.h> /* INFRINGES ON USER NAME SPACE */
-# define YYSIZE_T size_t
-# endif
-# define YYSTACK_ALLOC YYMALLOC
-# define YYSTACK_FREE YYFREE
-# endif
-#endif /* ! defined (yyoverflow) || YYERROR_VERBOSE */
-
-
-#if (! defined (yyoverflow) \
- && (! defined (__cplusplus) \
- || (defined (YYSTYPE_IS_TRIVIAL) && YYSTYPE_IS_TRIVIAL)))
-
-/* A type that is properly aligned for any stack member. */
-union yyalloc
-{
- short int yyss;
- YYSTYPE yyvs;
- };
-
-/* The size of the maximum gap between one aligned stack and the next. */
-# define YYSTACK_GAP_MAXIMUM (sizeof (union yyalloc) - 1)
-
-/* The size of an array large to enough to hold all stacks, each with
- N elements. */
-# define YYSTACK_BYTES(N) \
- ((N) * (sizeof (short int) + sizeof (YYSTYPE)) \
- + YYSTACK_GAP_MAXIMUM)
-
-/* Copy COUNT objects from FROM to TO. The source and destination do
- not overlap. */
-# ifndef YYCOPY
-# if defined (__GNUC__) && 1 < __GNUC__
-# define YYCOPY(To, From, Count) \
- __builtin_memcpy (To, From, (Count) * sizeof (*(From)))
-# else
-# define YYCOPY(To, From, Count) \
- do \
- { \
- register YYSIZE_T yyi; \
- for (yyi = 0; yyi < (Count); yyi++) \
- (To)[yyi] = (From)[yyi]; \
- } \
- while (0)
-# endif
-# endif
-
-/* Relocate STACK from its old location to the new one. The
- local variables YYSIZE and YYSTACKSIZE give the old and new number of
- elements in the stack, and YYPTR gives the new location of the
- stack. Advance YYPTR to a properly aligned location for the next
- stack. */
-# define YYSTACK_RELOCATE(Stack) \
- do \
- { \
- YYSIZE_T yynewbytes; \
- YYCOPY (&yyptr->Stack, Stack, yysize); \
- Stack = &yyptr->Stack; \
- yynewbytes = yystacksize * sizeof (*Stack) + YYSTACK_GAP_MAXIMUM; \
- yyptr += yynewbytes / sizeof (*yyptr); \
- } \
- while (0)
-
-#endif
-
-#if defined (__STDC__) || defined (__cplusplus)
- typedef signed char yysigned_char;
-#else
- typedef short int yysigned_char;
-#endif
-
-/* YYFINAL -- State number of the termination state. */
-#define YYFINAL 14
-/* YYLAST -- Last index in YYTABLE. */
-#define YYLAST 170
-
-/* YYNTOKENS -- Number of terminals. */
-#define YYNTOKENS 28
-/* YYNNTS -- Number of nonterminals. */
-#define YYNNTS 3
-/* YYNRULES -- Number of rules. */
-#define YYNRULES 26
-/* YYNRULES -- Number of states. */
-#define YYNSTATES 52
-
-/* YYTRANSLATE(YYLEX) -- Bison symbol number corresponding to YYLEX. */
-#define YYUNDEFTOK 2
-#define YYMAXUTOK 282
-
-#define YYTRANSLATE(YYX) \
- ((unsigned int) (YYX) <= YYMAXUTOK ? yytranslate[YYX] : YYUNDEFTOK)
-
-/* YYTRANSLATE[YYLEX] -- Bison symbol number corresponding to YYLEX. */
-static const unsigned char yytranslate[] =
-{
- 0, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 1, 2, 3, 4,
- 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
- 15, 16, 17, 18, 19, 20, 21, 22, 23, 24,
- 25, 26, 27
-};
-
-#if YYDEBUG
-/* YYPRHS[YYN] -- Index of the first RHS symbol of rule number YYN in
- YYRHS. */
-static const unsigned char yyprhs[] =
-{
- 0, 0, 3, 5, 9, 13, 17, 21, 25, 29,
- 33, 37, 41, 45, 49, 53, 57, 61, 65, 69,
- 73, 77, 81, 84, 87, 90, 93
-};
-
-/* YYRHS -- A `-1'-separated list of the rules' RHS. */
-static const yysigned_char yyrhs[] =
-{
- 29, 0, -1, 30, -1, 4, 30, 5, -1, 30,
- 6, 30, -1, 30, 7, 30, -1, 30, 8, 30,
- -1, 30, 9, 30, -1, 30, 10, 30, -1, 30,
- 12, 30, -1, 30, 15, 30, -1, 30, 14, 30,
- -1, 30, 16, 30, -1, 30, 13, 30, -1, 30,
- 11, 30, -1, 30, 18, 30, -1, 30, 17, 30,
- -1, 30, 20, 30, -1, 30, 19, 30, -1, 30,
- 23, 30, -1, 30, 22, 30, -1, 30, 21, 30,
- -1, 25, 30, -1, 24, 30, -1, 19, 30, -1,
- 20, 30, -1, 3, -1
-};
-
-/* YYRLINE[YYN] -- source line where rule number YYN was defined. */
-static const unsigned char yyrline[] =
-{
- 0, 76, 76, 82, 83, 84, 85, 86, 87, 88,
- 89, 90, 91, 92, 93, 94, 95, 96, 97, 98,
- 99, 104, 109, 110, 111, 112, 113
-};
-#endif
-
-#if YYDEBUG || YYERROR_VERBOSE
-/* YYTNME[SYMBOL-NUM] -- String name of the symbol SYMBOL-NUM.
- First, the terminals, then, starting at YYNTOKENS, nonterminals. */
-static const char *const yytname[] =
-{
- "$end", "error", "$undefined", "ARITH_NUM", "ARITH_LPAREN",
- "ARITH_RPAREN", "ARITH_OR", "ARITH_AND", "ARITH_BOR", "ARITH_BXOR",
- "ARITH_BAND", "ARITH_NE", "ARITH_EQ", "ARITH_LE", "ARITH_GE", "ARITH_GT",
- "ARITH_LT", "ARITH_RSHIFT", "ARITH_LSHIFT", "ARITH_SUB", "ARITH_ADD",
- "ARITH_REM", "ARITH_DIV", "ARITH_MUL", "ARITH_BNOT", "ARITH_NOT",
- "ARITH_UNARYPLUS", "ARITH_UNARYMINUS", "$accept", "exp", "expr", 0
-};
-#endif
-
-# ifdef YYPRINT
-/* YYTOKNUM[YYLEX-NUM] -- Internal token number corresponding to
- token YYLEX-NUM. */
-static const unsigned short int yytoknum[] =
-{
- 0, 256, 257, 258, 259, 260, 261, 262, 263, 264,
- 265, 266, 267, 268, 269, 270, 271, 272, 273, 274,
- 275, 276, 277, 278, 279, 280, 281, 282
-};
-# endif
-
-/* YYR1[YYN] -- Symbol number of symbol that rule YYN derives. */
-static const unsigned char yyr1[] =
-{
- 0, 28, 29, 30, 30, 30, 30, 30, 30, 30,
- 30, 30, 30, 30, 30, 30, 30, 30, 30, 30,
- 30, 30, 30, 30, 30, 30, 30
-};
-
-/* YYR2[YYN] -- Number of symbols composing right hand side of rule YYN. */
-static const unsigned char yyr2[] =
-{
- 0, 2, 1, 3, 3, 3, 3, 3, 3, 3,
- 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
- 3, 3, 2, 2, 2, 2, 1
-};
-
-/* YYDEFACT[STATE-NAME] -- Default rule to reduce with in state
- STATE-NUM when YYTABLE doesn't specify something else to do. Zero
- means the default is an error. */
-static const unsigned char yydefact[] =
-{
- 0, 26, 0, 0, 0, 0, 0, 0, 2, 0,
- 24, 25, 23, 22, 1, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 3, 4, 5, 6, 7, 8, 14,
- 9, 13, 11, 10, 12, 16, 15, 18, 17, 21,
- 20, 19
-};
-
-/* YYDEFGOTO[NTERM-NUM]. */
-static const yysigned_char yydefgoto[] =
-{
- -1, 7, 8
-};
-
-/* YYPACT[STATE-NUM] -- Index in YYTABLE of the portion describing
- STATE-NUM. */
-#define YYPACT_NINF -13
-static const short int yypact[] =
-{
- 28, -13, 28, 28, 28, 28, 28, 12, 67, 49,
- -13, -13, -13, -13, -13, 28, 28, 28, 28, 28,
- 28, 28, 28, 28, 28, 28, 28, 28, 28, 28,
- 28, 28, 28, -13, 84, 100, 115, 23, 128, 139,
- 139, -12, -12, -12, -12, 144, 144, 147, 147, -13,
- -13, -13
-};
-
-/* YYPGOTO[NTERM-NUM]. */
-static const yysigned_char yypgoto[] =
-{
- -13, -13, -2
-};
-
-/* YYTABLE[YYPACT[STATE-NUM]]. What to do in state STATE-NUM. If
- positive, shift that token. If negative, reduce the rule which
- number is the opposite. If zero, do what YYDEFACT says.
- If YYTABLE_NINF, syntax error. */
-#define YYTABLE_NINF -1
-static const unsigned char yytable[] =
-{
- 9, 10, 11, 12, 13, 26, 27, 28, 29, 30,
- 31, 32, 14, 34, 35, 36, 37, 38, 39, 40,
- 41, 42, 43, 44, 45, 46, 47, 48, 49, 50,
- 51, 1, 2, 19, 20, 21, 22, 23, 24, 25,
- 26, 27, 28, 29, 30, 31, 32, 3, 4, 0,
- 0, 0, 5, 6, 33, 15, 16, 17, 18, 19,
- 20, 21, 22, 23, 24, 25, 26, 27, 28, 29,
- 30, 31, 32, 15, 16, 17, 18, 19, 20, 21,
- 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
- 32, 16, 17, 18, 19, 20, 21, 22, 23, 24,
- 25, 26, 27, 28, 29, 30, 31, 32, 17, 18,
- 19, 20, 21, 22, 23, 24, 25, 26, 27, 28,
- 29, 30, 31, 32, 18, 19, 20, 21, 22, 23,
- 24, 25, 26, 27, 28, 29, 30, 31, 32, 20,
- 21, 22, 23, 24, 25, 26, 27, 28, 29, 30,
- 31, 32, 22, 23, 24, 25, 26, 27, 28, 29,
- 30, 31, 32, 28, 29, 30, 31, 32, 30, 31,
- 32
-};
-
-static const yysigned_char yycheck[] =
-{
- 2, 3, 4, 5, 6, 17, 18, 19, 20, 21,
- 22, 23, 0, 15, 16, 17, 18, 19, 20, 21,
- 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
- 32, 3, 4, 10, 11, 12, 13, 14, 15, 16,
- 17, 18, 19, 20, 21, 22, 23, 19, 20, -1,
- -1, -1, 24, 25, 5, 6, 7, 8, 9, 10,
- 11, 12, 13, 14, 15, 16, 17, 18, 19, 20,
- 21, 22, 23, 6, 7, 8, 9, 10, 11, 12,
- 13, 14, 15, 16, 17, 18, 19, 20, 21, 22,
- 23, 7, 8, 9, 10, 11, 12, 13, 14, 15,
- 16, 17, 18, 19, 20, 21, 22, 23, 8, 9,
- 10, 11, 12, 13, 14, 15, 16, 17, 18, 19,
- 20, 21, 22, 23, 9, 10, 11, 12, 13, 14,
- 15, 16, 17, 18, 19, 20, 21, 22, 23, 11,
- 12, 13, 14, 15, 16, 17, 18, 19, 20, 21,
- 22, 23, 13, 14, 15, 16, 17, 18, 19, 20,
- 21, 22, 23, 19, 20, 21, 22, 23, 21, 22,
- 23
-};
-
-/* YYSTOS[STATE-NUM] -- The (internal number of the) accessing
- symbol of state STATE-NUM. */
-static const unsigned char yystos[] =
-{
- 0, 3, 4, 19, 20, 24, 25, 29, 30, 30,
- 30, 30, 30, 30, 0, 6, 7, 8, 9, 10,
- 11, 12, 13, 14, 15, 16, 17, 18, 19, 20,
- 21, 22, 23, 5, 30, 30, 30, 30, 30, 30,
- 30, 30, 30, 30, 30, 30, 30, 30, 30, 30,
- 30, 30
-};
-
-#if ! defined (YYSIZE_T) && defined (__SIZE_TYPE__)
-# define YYSIZE_T __SIZE_TYPE__
-#endif
-#if ! defined (YYSIZE_T) && defined (size_t)
-# define YYSIZE_T size_t
-#endif
-#if ! defined (YYSIZE_T)
-# if defined (__STDC__) || defined (__cplusplus)
-# include <stddef.h> /* INFRINGES ON USER NAME SPACE */
-# define YYSIZE_T size_t
-# endif
-#endif
-#if ! defined (YYSIZE_T)
-# define YYSIZE_T unsigned int
-#endif
-
-#define yyerrok (yyerrstatus = 0)
-#define yyclearin (yychar = YYEMPTY)
-#define YYEMPTY (-2)
-#define YYEOF 0
-
-#define YYACCEPT goto yyacceptlab
-#define YYABORT goto yyabortlab
-#define YYERROR goto yyerrorlab
-
-
-/* Like YYERROR except do call yyerror. This remains here temporarily
- to ease the transition to the new meaning of YYERROR, for GCC.
- Once GCC version 2 has supplanted version 1, this can go. */
-
-#define YYFAIL goto yyerrlab
-
-#define YYRECOVERING() (!!yyerrstatus)
-
-#define YYBACKUP(Token, Value) \
-do \
- if (yychar == YYEMPTY && yylen == 1) \
- { \
- yychar = (Token); \
- yylval = (Value); \
- yytoken = YYTRANSLATE (yychar); \
- YYPOPSTACK; \
- goto yybackup; \
- } \
- else \
- { \
- yyerror ("syntax error: cannot back up");\
- YYERROR; \
- } \
-while (0)
-
-#define YYTERROR 1
-#define YYERRCODE 256
-
-/* YYLLOC_DEFAULT -- Compute the default location (before the actions
- are run). */
-
-#ifndef YYLLOC_DEFAULT
-# define YYLLOC_DEFAULT(Current, Rhs, N) \
- ((Current).first_line = (Rhs)[1].first_line, \
- (Current).first_column = (Rhs)[1].first_column, \
- (Current).last_line = (Rhs)[N].last_line, \
- (Current).last_column = (Rhs)[N].last_column)
-#endif
-
-/* YYLEX -- calling `yylex' with the right arguments. */
-
-#ifdef YYLEX_PARAM
-# define YYLEX yylex (YYLEX_PARAM)
-#else
-# define YYLEX yylex ()
-#endif
-
-/* Enable debugging if requested. */
-#if YYDEBUG
-
-# ifndef YYFPRINTF
-# include <stdio.h> /* INFRINGES ON USER NAME SPACE */
-# define YYFPRINTF fprintf
-# endif
-
-# define YYDPRINTF(Args) \
-do { \
- if (yydebug) \
- YYFPRINTF Args; \
-} while (0)
-
-# define YYDSYMPRINT(Args) \
-do { \
- if (yydebug) \
- yysymprint Args; \
-} while (0)
-
-# define YYDSYMPRINTF(Title, Token, Value, Location) \
-do { \
- if (yydebug) \
- { \
- YYFPRINTF (stderr, "%s ", Title); \
- yysymprint (stderr, \
- Token, Value); \
- YYFPRINTF (stderr, "\n"); \
- } \
-} while (0)
-
-/*------------------------------------------------------------------.
-| yy_stack_print -- Print the state stack from its BOTTOM up to its |
-| TOP (included). |
-`------------------------------------------------------------------*/
-
-#if defined (__STDC__) || defined (__cplusplus)
-static void
-yy_stack_print (short int *bottom, short int *top)
-#else
-static void
-yy_stack_print (bottom, top)
- short int *bottom;
- short int *top;
-#endif
-{
- YYFPRINTF (stderr, "Stack now");
- for (/* Nothing. */; bottom <= top; ++bottom)
- YYFPRINTF (stderr, " %d", *bottom);
- YYFPRINTF (stderr, "\n");
-}
-
-# define YY_STACK_PRINT(Bottom, Top) \
-do { \
- if (yydebug) \
- yy_stack_print ((Bottom), (Top)); \
-} while (0)
-
-
-/*------------------------------------------------.
-| Report that the YYRULE is going to be reduced. |
-`------------------------------------------------*/
-
-#if defined (__STDC__) || defined (__cplusplus)
-static void
-yy_reduce_print (int yyrule)
-#else
-static void
-yy_reduce_print (yyrule)
- int yyrule;
-#endif
-{
- int yyi;
- unsigned int yylno = yyrline[yyrule];
- YYFPRINTF (stderr, "Reducing stack by rule %d (line %u), ",
- yyrule - 1, yylno);
- /* Print the symbols being reduced, and their result. */
- for (yyi = yyprhs[yyrule]; 0 <= yyrhs[yyi]; yyi++)
- YYFPRINTF (stderr, "%s ", yytname [yyrhs[yyi]]);
- YYFPRINTF (stderr, "-> %s\n", yytname [yyr1[yyrule]]);
-}
-
-# define YY_REDUCE_PRINT(Rule) \
-do { \
- if (yydebug) \
- yy_reduce_print (Rule); \
-} while (0)
-
-/* Nonzero means print parse trace. It is left uninitialized so that
- multiple parsers can coexist. */
-int yydebug;
-#else /* !YYDEBUG */
-# define YYDPRINTF(Args)
-# define YYDSYMPRINT(Args)
-# define YYDSYMPRINTF(Title, Token, Value, Location)
-# define YY_STACK_PRINT(Bottom, Top)
-# define YY_REDUCE_PRINT(Rule)
-#endif /* !YYDEBUG */
-
-
-/* YYINITDEPTH -- initial size of the parser's stacks. */
-#ifndef YYINITDEPTH
-# define YYINITDEPTH 200
-#endif
-
-/* YYMAXDEPTH -- maximum size the stacks can grow to (effective only
- if the built-in stack extension method is used).
-
- Do not make this value too large; the results are undefined if
- SIZE_MAX < YYSTACK_BYTES (YYMAXDEPTH)
- evaluated with infinite-precision integer arithmetic. */
-
-#if defined (YYMAXDEPTH) && YYMAXDEPTH == 0
-# undef YYMAXDEPTH
-#endif
-
-#ifndef YYMAXDEPTH
-# define YYMAXDEPTH 10000
-#endif
-
-
-
-#if YYERROR_VERBOSE
-
-# ifndef yystrlen
-# if defined (__GLIBC__) && defined (_STRING_H)
-# define yystrlen strlen
-# else
-/* Return the length of YYSTR. */
-static YYSIZE_T
-# if defined (__STDC__) || defined (__cplusplus)
-yystrlen (const char *yystr)
-# else
-yystrlen (yystr)
- const char *yystr;
-# endif
-{
- register const char *yys = yystr;
-
- while (*yys++ != '\0')
- continue;
-
- return yys - yystr - 1;
-}
-# endif
-# endif
-
-# ifndef yystpcpy
-# if defined (__GLIBC__) && defined (_STRING_H) && defined (_GNU_SOURCE)
-# define yystpcpy stpcpy
-# else
-/* Copy YYSRC to YYDEST, returning the address of the terminating '\0' in
- YYDEST. */
-static char *
-# if defined (__STDC__) || defined (__cplusplus)
-yystpcpy (char *yydest, const char *yysrc)
-# else
-yystpcpy (yydest, yysrc)
- char *yydest;
- const char *yysrc;
-# endif
-{
- register char *yyd = yydest;
- register const char *yys = yysrc;
-
- while ((*yyd++ = *yys++) != '\0')
- continue;
-
- return yyd - 1;
-}
-# endif
-# endif
-
-#endif /* !YYERROR_VERBOSE */
-
-
-
-#if YYDEBUG
-/*--------------------------------.
-| Print this symbol on YYOUTPUT. |
-`--------------------------------*/
-
-#if defined (__STDC__) || defined (__cplusplus)
-static void
-yysymprint (FILE *yyoutput, int yytype, YYSTYPE *yyvaluep)
-#else
-static void
-yysymprint (yyoutput, yytype, yyvaluep)
- FILE *yyoutput;
- int yytype;
- YYSTYPE *yyvaluep;
-#endif
-{
- /* Pacify ``unused variable'' warnings. */
- (void) yyvaluep;
-
- if (yytype < YYNTOKENS)
- {
- YYFPRINTF (yyoutput, "token %s (", yytname[yytype]);
-# ifdef YYPRINT
- YYPRINT (yyoutput, yytoknum[yytype], *yyvaluep);
-# endif
- }
- else
- YYFPRINTF (yyoutput, "nterm %s (", yytname[yytype]);
-
- switch (yytype)
- {
- default:
- break;
- }
- YYFPRINTF (yyoutput, ")");
-}
-
-#endif /* ! YYDEBUG */
-/*-----------------------------------------------.
-| Release the memory associated to this symbol. |
-`-----------------------------------------------*/
-
-#if defined (__STDC__) || defined (__cplusplus)
-static void
-yydestruct (int yytype, YYSTYPE *yyvaluep)
-#else
-static void
-yydestruct (yytype, yyvaluep)
- int yytype;
- YYSTYPE *yyvaluep;
-#endif
-{
- /* Pacify ``unused variable'' warnings. */
- (void) yyvaluep;
-
- switch (yytype)
- {
-
- default:
- break;
- }
-}
-
-
-/* Prevent warnings from -Wmissing-prototypes. */
-
-#ifdef YYPARSE_PARAM
-# if defined (__STDC__) || defined (__cplusplus)
-int yyparse (void *YYPARSE_PARAM);
-# else
-int yyparse ();
-# endif
-#else /* ! YYPARSE_PARAM */
-#if defined (__STDC__) || defined (__cplusplus)
-int yyparse (void);
-#else
-int yyparse ();
-#endif
-#endif /* ! YYPARSE_PARAM */
-
-
-
-/* The lookahead symbol. */
-int yychar;
-
-/* The semantic value of the lookahead symbol. */
-YYSTYPE yylval;
-
-/* Number of syntax errors so far. */
-int yynerrs;
-
-
-
-/*----------.
-| yyparse. |
-`----------*/
-
-#ifdef YYPARSE_PARAM
-# if defined (__STDC__) || defined (__cplusplus)
-int yyparse (void *YYPARSE_PARAM)
-# else
-int yyparse (YYPARSE_PARAM)
- void *YYPARSE_PARAM;
-# endif
-#else /* ! YYPARSE_PARAM */
-#if defined (__STDC__) || defined (__cplusplus)
-int
-yyparse (void)
-#else
-int
-yyparse ()
-
-#endif
-#endif
-{
-
- register int yystate;
- register int yyn;
- int yyresult;
- /* Number of tokens to shift before error messages enabled. */
- int yyerrstatus;
- /* Lookahead token as an internal (translated) token number. */
- int yytoken = 0;
-
- /* Three stacks and their tools:
- `yyss': related to states,
- `yyvs': related to semantic values,
- `yyls': related to locations.
-
- Refer to the stacks thru separate pointers, to allow yyoverflow
- to reallocate them elsewhere. */
-
- /* The state stack. */
- short int yyssa[YYINITDEPTH];
- short int *yyss = yyssa;
- register short int *yyssp;
-
- /* The semantic value stack. */
- YYSTYPE yyvsa[YYINITDEPTH];
- YYSTYPE *yyvs = yyvsa;
- register YYSTYPE *yyvsp;
-
-
-
-#define YYPOPSTACK (yyvsp--, yyssp--)
-
- YYSIZE_T yystacksize = YYINITDEPTH;
-
- /* The variables used to return semantic value and location from the
- action routines. */
- YYSTYPE yyval;
-
-
- /* When reducing, the number of symbols on the RHS of the reduced
- rule. */
- int yylen;
-
- YYDPRINTF ((stderr, "Starting parse\n"));
-
- yystate = 0;
- yyerrstatus = 0;
- yynerrs = 0;
- yychar = YYEMPTY; /* Cause a token to be read. */
-
- /* Initialize stack pointers.
- Waste one element of value and location stack
- so that they stay on the same level as the state stack.
- The wasted elements are never initialized. */
-
- yyssp = yyss;
- yyvsp = yyvs;
-
-
- goto yysetstate;
-
-/*------------------------------------------------------------.
-| yynewstate -- Push a new state, which is found in yystate. |
-`------------------------------------------------------------*/
- yynewstate:
- /* In all cases, when you get here, the value and location stacks
- have just been pushed. so pushing a state here evens the stacks.
- */
- yyssp++;
-
- yysetstate:
- *yyssp = yystate;
-
- if (yyss + yystacksize - 1 <= yyssp)
- {
- /* Get the current used size of the three stacks, in elements. */
- YYSIZE_T yysize = yyssp - yyss + 1;
-
-#ifdef yyoverflow
- {
- /* Give user a chance to reallocate the stack. Use copies of
- these so that the &'s don't force the real ones into
- memory. */
- YYSTYPE *yyvs1 = yyvs;
- short int *yyss1 = yyss;
-
-
- /* Each stack pointer address is followed by the size of the
- data in use in that stack, in bytes. This used to be a
- conditional around just the two extra args, but that might
- be undefined if yyoverflow is a macro. */
- yyoverflow ("parser stack overflow",
- &yyss1, yysize * sizeof (*yyssp),
- &yyvs1, yysize * sizeof (*yyvsp),
-
- &yystacksize);
-
- yyss = yyss1;
- yyvs = yyvs1;
- }
-#else /* no yyoverflow */
-# ifndef YYSTACK_RELOCATE
- goto yyoverflowlab;
-# else
- /* Extend the stack our own way. */
- if (YYMAXDEPTH <= yystacksize)
- goto yyoverflowlab;
- yystacksize *= 2;
- if (YYMAXDEPTH < yystacksize)
- yystacksize = YYMAXDEPTH;
-
- {
- short int *yyss1 = yyss;
- union yyalloc *yyptr =
- (union yyalloc *) YYSTACK_ALLOC (YYSTACK_BYTES (yystacksize));
- if (! yyptr)
- goto yyoverflowlab;
- YYSTACK_RELOCATE (yyss);
- YYSTACK_RELOCATE (yyvs);
-
-# undef YYSTACK_RELOCATE
- if (yyss1 != yyssa)
- YYSTACK_FREE (yyss1);
- }
-# endif
-#endif /* no yyoverflow */
-
- yyssp = yyss + yysize - 1;
- yyvsp = yyvs + yysize - 1;
-
-
- YYDPRINTF ((stderr, "Stack size increased to %lu\n",
- (unsigned long int) yystacksize));
-
- if (yyss + yystacksize - 1 <= yyssp)
- YYABORT;
- }
-
- YYDPRINTF ((stderr, "Entering state %d\n", yystate));
-
- goto yybackup;
-
-/*-----------.
-| yybackup. |
-`-----------*/
-yybackup:
-
-/* Do appropriate processing given the current state. */
-/* Read a lookahead token if we need one and don't already have one. */
-/* yyresume: */
-
- /* First try to decide what to do without reference to lookahead token. */
-
- yyn = yypact[yystate];
- if (yyn == YYPACT_NINF)
- goto yydefault;
-
- /* Not known => get a lookahead token if don't already have one. */
-
- /* YYCHAR is either YYEMPTY or YYEOF or a valid lookahead symbol. */
- if (yychar == YYEMPTY)
- {
- YYDPRINTF ((stderr, "Reading a token: "));
- yychar = YYLEX;
- }
-
- if (yychar <= YYEOF)
- {
- yychar = yytoken = YYEOF;
- YYDPRINTF ((stderr, "Now at end of input.\n"));
- }
- else
- {
- yytoken = YYTRANSLATE (yychar);
- YYDSYMPRINTF ("Next token is", yytoken, &yylval, &yylloc);
- }
-
- /* If the proper action on seeing token YYTOKEN is to reduce or to
- detect an error, take that action. */
- yyn += yytoken;
- if (yyn < 0 || YYLAST < yyn || yycheck[yyn] != yytoken)
- goto yydefault;
- yyn = yytable[yyn];
- if (yyn <= 0)
- {
- if (yyn == 0 || yyn == YYTABLE_NINF)
- goto yyerrlab;
- yyn = -yyn;
- goto yyreduce;
- }
-
- if (yyn == YYFINAL)
- YYACCEPT;
-
- /* Shift the lookahead token. */
- YYDPRINTF ((stderr, "Shifting token %s, ", yytname[yytoken]));
-
- /* Discard the token being shifted unless it is eof. */
- if (yychar != YYEOF)
- yychar = YYEMPTY;
-
- *++yyvsp = yylval;
-
-
- /* Count tokens shifted since error; after three, turn off error
- status. */
- if (yyerrstatus)
- yyerrstatus--;
-
- yystate = yyn;
- goto yynewstate;
-
-
-/*-----------------------------------------------------------.
-| yydefault -- do the default action for the current state. |
-`-----------------------------------------------------------*/
-yydefault:
- yyn = yydefact[yystate];
- if (yyn == 0)
- goto yyerrlab;
- goto yyreduce;
-
-
-/*-----------------------------.
-| yyreduce -- Do a reduction. |
-`-----------------------------*/
-yyreduce:
- /* yyn is the number of a rule to reduce with. */
- yylen = yyr2[yyn];
-
- /* If YYLEN is nonzero, implement the default value of the action:
- `$$ = $1'.
-
- Otherwise, the following line sets YYVAL to garbage.
- This behavior is undocumented and Bison
- users should not rely upon it. Assigning to YYVAL
- unconditionally makes the parser a bit smaller, and it avoids a
- GCC warning that YYVAL may be used uninitialized. */
- yyval = yyvsp[1-yylen];
-
-
- YY_REDUCE_PRINT (yyn);
- switch (yyn)
- {
- case 2:
-#line 76 "arith.y"
- {
- return (yyvsp[0]);
- ;}
- break;
-
- case 3:
-#line 82 "arith.y"
- { yyval = yyvsp[-1]; ;}
- break;
-
- case 4:
-#line 83 "arith.y"
- { yyval = yyvsp[-2] ? yyvsp[-2] : yyvsp[0] ? yyvsp[0] : 0; ;}
- break;
-
- case 5:
-#line 84 "arith.y"
- { yyval = yyvsp[-2] ? ( yyvsp[0] ? yyvsp[0] : 0 ) : 0; ;}
- break;
-
- case 6:
-#line 85 "arith.y"
- { yyval = yyvsp[-2] | yyvsp[0]; ;}
- break;
-
- case 7:
-#line 86 "arith.y"
- { yyval = yyvsp[-2] ^ yyvsp[0]; ;}
- break;
-
- case 8:
-#line 87 "arith.y"
- { yyval = yyvsp[-2] & yyvsp[0]; ;}
- break;
-
- case 9:
-#line 88 "arith.y"
- { yyval = yyvsp[-2] == yyvsp[0]; ;}
- break;
-
- case 10:
-#line 89 "arith.y"
- { yyval = yyvsp[-2] > yyvsp[0]; ;}
- break;
-
- case 11:
-#line 90 "arith.y"
- { yyval = yyvsp[-2] >= yyvsp[0]; ;}
- break;
-
- case 12:
-#line 91 "arith.y"
- { yyval = yyvsp[-2] < yyvsp[0]; ;}
- break;
-
- case 13:
-#line 92 "arith.y"
- { yyval = yyvsp[-2] <= yyvsp[0]; ;}
- break;
-
- case 14:
-#line 93 "arith.y"
- { yyval = yyvsp[-2] != yyvsp[0]; ;}
- break;
-
- case 15:
-#line 94 "arith.y"
- { yyval = yyvsp[-2] << yyvsp[0]; ;}
- break;
-
- case 16:
-#line 95 "arith.y"
- { yyval = yyvsp[-2] >> yyvsp[0]; ;}
- break;
-
- case 17:
-#line 96 "arith.y"
- { yyval = yyvsp[-2] + yyvsp[0]; ;}
- break;
-
- case 18:
-#line 97 "arith.y"
- { yyval = yyvsp[-2] - yyvsp[0]; ;}
- break;
-
- case 19:
-#line 98 "arith.y"
- { yyval = yyvsp[-2] * yyvsp[0]; ;}
- break;
-
- case 20:
-#line 99 "arith.y"
- {
- if (yyvsp[0] == 0)
- yyerror("division by zero");
- yyval = yyvsp[-2] / yyvsp[0];
- ;}
- break;
-
- case 21:
-#line 104 "arith.y"
- {
- if (yyvsp[0] == 0)
- yyerror("division by zero");
- yyval = yyvsp[-2] % yyvsp[0];
- ;}
- break;
-
- case 22:
-#line 109 "arith.y"
- { yyval = !(yyvsp[0]); ;}
- break;
-
- case 23:
-#line 110 "arith.y"
- { yyval = ~(yyvsp[0]); ;}
- break;
-
- case 24:
-#line 111 "arith.y"
- { yyval = -(yyvsp[0]); ;}
- break;
-
- case 25:
-#line 112 "arith.y"
- { yyval = yyvsp[0]; ;}
- break;
-
-
- }
-
-/* Line 1010 of yacc.c. */
-#line 1276 "arith.c"
-
- yyvsp -= yylen;
- yyssp -= yylen;
-
-
- YY_STACK_PRINT (yyss, yyssp);
-
- *++yyvsp = yyval;
-
-
- /* Now `shift' the result of the reduction. Determine what state
- that goes to, based on the state we popped back to and the rule
- number reduced by. */
-
- yyn = yyr1[yyn];
-
- yystate = yypgoto[yyn - YYNTOKENS] + *yyssp;
- if (0 <= yystate && yystate <= YYLAST && yycheck[yystate] == *yyssp)
- yystate = yytable[yystate];
- else
- yystate = yydefgoto[yyn - YYNTOKENS];
-
- goto yynewstate;
-
-
-/*------------------------------------.
-| yyerrlab -- here on detecting error |
-`------------------------------------*/
-yyerrlab:
- /* If not already recovering from an error, report this error. */
- if (!yyerrstatus)
- {
- ++yynerrs;
-#if YYERROR_VERBOSE
- yyn = yypact[yystate];
-
- if (YYPACT_NINF < yyn && yyn < YYLAST)
- {
- YYSIZE_T yysize = 0;
- int yytype = YYTRANSLATE (yychar);
- const char* yyprefix;
- char *yymsg;
- int yyx;
-
- /* Start YYX at -YYN if negative to avoid negative indexes in
- YYCHECK. */
- int yyxbegin = yyn < 0 ? -yyn : 0;
-
- /* Stay within bounds of both yycheck and yytname. */
- int yychecklim = YYLAST - yyn;
- int yyxend = yychecklim < YYNTOKENS ? yychecklim : YYNTOKENS;
- int yycount = 0;
-
- yyprefix = ", expecting ";
- for (yyx = yyxbegin; yyx < yyxend; ++yyx)
- if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR)
- {
- yysize += yystrlen (yyprefix) + yystrlen (yytname [yyx]);
- yycount += 1;
- if (yycount == 5)
- {
- yysize = 0;
- break;
- }
- }
- yysize += (sizeof ("syntax error, unexpected ")
- + yystrlen (yytname[yytype]));
- yymsg = (char *) YYSTACK_ALLOC (yysize);
- if (yymsg != 0)
- {
- char *yyp = yystpcpy (yymsg, "syntax error, unexpected ");
- yyp = yystpcpy (yyp, yytname[yytype]);
-
- if (yycount < 5)
- {
- yyprefix = ", expecting ";
- for (yyx = yyxbegin; yyx < yyxend; ++yyx)
- if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR)
- {
- yyp = yystpcpy (yyp, yyprefix);
- yyp = yystpcpy (yyp, yytname[yyx]);
- yyprefix = " or ";
- }
- }
- yyerror (yymsg);
- YYSTACK_FREE (yymsg);
- }
- else
- yyerror ("syntax error; also virtual memory exhausted");
- }
- else
-#endif /* YYERROR_VERBOSE */
- yyerror ("syntax error");
- }
-
-
-
- if (yyerrstatus == 3)
- {
- /* If just tried and failed to reuse lookahead token after an
- error, discard it. */
-
- if (yychar <= YYEOF)
- {
- /* If at end of input, pop the error token,
- then the rest of the stack, then return failure. */
- if (yychar == YYEOF)
- for (;;)
- {
- YYPOPSTACK;
- if (yyssp == yyss)
- YYABORT;
- YYDSYMPRINTF ("Error: popping", yystos[*yyssp], yyvsp, yylsp);
- yydestruct (yystos[*yyssp], yyvsp);
- }
- }
- else
- {
- YYDSYMPRINTF ("Error: discarding", yytoken, &yylval, &yylloc);
- yydestruct (yytoken, &yylval);
- yychar = YYEMPTY;
-
- }
- }
-
- /* Else will try to reuse lookahead token after shifting the error
- token. */
- goto yyerrlab1;
-
-
-/*---------------------------------------------------.
-| yyerrorlab -- error raised explicitly by YYERROR. |
-`---------------------------------------------------*/
-yyerrorlab:
-
-#ifdef __GNUC__
- /* Pacify GCC when the user code never invokes YYERROR and the label
- yyerrorlab therefore never appears in user code. */
- if (0)
- goto yyerrorlab;
-#endif
-
- yyvsp -= yylen;
- yyssp -= yylen;
- yystate = *yyssp;
- goto yyerrlab1;
-
-
-/*-------------------------------------------------------------.
-| yyerrlab1 -- common code for both syntax error and YYERROR. |
-`-------------------------------------------------------------*/
-yyerrlab1:
- yyerrstatus = 3; /* Each real token shifted decrements this. */
-
- for (;;)
- {
- yyn = yypact[yystate];
- if (yyn != YYPACT_NINF)
- {
- yyn += YYTERROR;
- if (0 <= yyn && yyn <= YYLAST && yycheck[yyn] == YYTERROR)
- {
- yyn = yytable[yyn];
- if (0 < yyn)
- break;
- }
- }
-
- /* Pop the current state because it cannot handle the error token. */
- if (yyssp == yyss)
- YYABORT;
-
- YYDSYMPRINTF ("Error: popping", yystos[*yyssp], yyvsp, yylsp);
- yydestruct (yystos[yystate], yyvsp);
- YYPOPSTACK;
- yystate = *yyssp;
- YY_STACK_PRINT (yyss, yyssp);
- }
-
- if (yyn == YYFINAL)
- YYACCEPT;
-
- YYDPRINTF ((stderr, "Shifting error token, "));
-
- *++yyvsp = yylval;
-
-
- yystate = yyn;
- goto yynewstate;
-
-
-/*-------------------------------------.
-| yyacceptlab -- YYACCEPT comes here. |
-`-------------------------------------*/
-yyacceptlab:
- yyresult = 0;
- goto yyreturn;
-
-/*-----------------------------------.
-| yyabortlab -- YYABORT comes here. |
-`-----------------------------------*/
-yyabortlab:
- yyresult = 1;
- goto yyreturn;
-
-#ifndef yyoverflow
-/*----------------------------------------------.
-| yyoverflowlab -- parser overflow comes here. |
-`----------------------------------------------*/
-yyoverflowlab:
- yyerror ("parser stack overflow");
- yyresult = 2;
- /* Fall through. */
-#endif
-
-yyreturn:
-#ifndef yyoverflow
- if (yyss != yyssa)
- YYSTACK_FREE (yyss);
-#endif
- return yyresult;
-}
-
-
-#line 115 "arith.y"
-
-int
-arith(s)
- const char *s;
-{
- long result;
-
- arith_buf = arith_startbuf = s;
-
- INTOFF;
- result = yyparse();
- arith_lex_reset(); /* reprime lex */
- INTON;
-
- return (result);
-}
-
-
-/*
- * The exp(1) builtin.
- */
-int
-expcmd(argc, argv)
- int argc;
- char **argv;
-{
- const char *p;
- char *concat;
- char **ap;
- long i;
-
- if (argc > 1) {
- p = argv[1];
- if (argc > 2) {
- /*
- * concatenate arguments
- */
- STARTSTACKSTR(concat);
- ap = argv + 2;
- for (;;) {
- while (*p)
- STPUTC(*p++, concat);
- if ((p = *ap++) == NULL)
- break;
- STPUTC(' ', concat);
- }
- STPUTC('\0', concat);
- p = grabstackstr(concat);
- }
- } else
- p = "";
-
- i = arith(p);
-
- out1fmt("%ld\n", i);
- return (! i);
-}
-
-/*************************/
-#ifdef TEST_ARITH
-#include <stdio.h>
-main(argc, argv)
- char *argv[];
-{
- printf("%d\n", exp(argv[1]));
-}
-error(s)
- char *s;
-{
- fprintf(stderr, "exp: %s\n", s);
- exit(1);
-}
-#endif
-
-void
-yyerror(s)
- const char *s;
-{
-
-// yyerrok;
- yyclearin;
- arith_lex_reset(); /* reprime lex */
- error("arithmetic expression: %s: \"%s\"", s, arith_startbuf);
- /* NOTREACHED */
-}
-
-
diff --git a/sh/arith.h b/sh/arith.h
deleted file mode 100644
index f70c093..0000000
--- a/sh/arith.h
+++ /dev/null
@@ -1,25 +0,0 @@
-#define ARITH_NUM 258
-#define ARITH_LPAREN 259
-#define ARITH_RPAREN 260
-#define ARITH_OR 261
-#define ARITH_AND 262
-#define ARITH_BOR 263
-#define ARITH_BXOR 264
-#define ARITH_BAND 265
-#define ARITH_NE 266
-#define ARITH_EQ 267
-#define ARITH_LE 268
-#define ARITH_GE 269
-#define ARITH_GT 270
-#define ARITH_LT 271
-#define ARITH_RSHIFT 272
-#define ARITH_LSHIFT 273
-#define ARITH_SUB 274
-#define ARITH_ADD 275
-#define ARITH_REM 276
-#define ARITH_DIV 277
-#define ARITH_MUL 278
-#define ARITH_BNOT 279
-#define ARITH_NOT 280
-#define ARITH_UNARYPLUS 281
-#define ARITH_UNARYMINUS 282
diff --git a/sh/arith.y b/sh/arith.y
deleted file mode 100644
index d51ed38..0000000
--- a/sh/arith.y
+++ /dev/null
@@ -1,199 +0,0 @@
-%{
-/* $NetBSD: arith.y,v 1.17 2003/09/17 17:33:36 jmmv Exp $ */
-
-/*-
- * Copyright (c) 1993
- * The Regents of the University of California. All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Kenneth Almquist.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <sys/cdefs.h>
-#ifndef lint
-#if 0
-static char sccsid[] = "@(#)arith.y 8.3 (Berkeley) 5/4/95";
-#else
-__RCSID("$NetBSD: arith.y,v 1.17 2003/09/17 17:33:36 jmmv Exp $");
-#endif
-#endif /* not lint */
-
-#include <stdlib.h>
-#include "expand.h"
-#include "shell.h"
-#include "error.h"
-#include "output.h"
-#include "memalloc.h"
-
-const char *arith_buf, *arith_startbuf;
-
-void yyerror(const char *);
-#ifdef TESTARITH
-int main(int , char *[]);
-int error(char *);
-#endif
-
-%}
-%token ARITH_NUM ARITH_LPAREN ARITH_RPAREN
-
-%left ARITH_OR
-%left ARITH_AND
-%left ARITH_BOR
-%left ARITH_BXOR
-%left ARITH_BAND
-%left ARITH_EQ ARITH_NE
-%left ARITH_LT ARITH_GT ARITH_GE ARITH_LE
-%left ARITH_LSHIFT ARITH_RSHIFT
-%left ARITH_ADD ARITH_SUB
-%left ARITH_MUL ARITH_DIV ARITH_REM
-%left ARITH_UNARYMINUS ARITH_UNARYPLUS ARITH_NOT ARITH_BNOT
-%%
-
-exp: expr {
- return ($1);
- }
- ;
-
-
-expr: ARITH_LPAREN expr ARITH_RPAREN { $$ = $2; }
- | expr ARITH_OR expr { $$ = $1 ? $1 : $3 ? $3 : 0; }
- | expr ARITH_AND expr { $$ = $1 ? ( $3 ? $3 : 0 ) : 0; }
- | expr ARITH_BOR expr { $$ = $1 | $3; }
- | expr ARITH_BXOR expr { $$ = $1 ^ $3; }
- | expr ARITH_BAND expr { $$ = $1 & $3; }
- | expr ARITH_EQ expr { $$ = $1 == $3; }
- | expr ARITH_GT expr { $$ = $1 > $3; }
- | expr ARITH_GE expr { $$ = $1 >= $3; }
- | expr ARITH_LT expr { $$ = $1 < $3; }
- | expr ARITH_LE expr { $$ = $1 <= $3; }
- | expr ARITH_NE expr { $$ = $1 != $3; }
- | expr ARITH_LSHIFT expr { $$ = $1 << $3; }
- | expr ARITH_RSHIFT expr { $$ = $1 >> $3; }
- | expr ARITH_ADD expr { $$ = $1 + $3; }
- | expr ARITH_SUB expr { $$ = $1 - $3; }
- | expr ARITH_MUL expr { $$ = $1 * $3; }
- | expr ARITH_DIV expr {
- if ($3 == 0)
- yyerror("division by zero");
- $$ = $1 / $3;
- }
- | expr ARITH_REM expr {
- if ($3 == 0)
- yyerror("division by zero");
- $$ = $1 % $3;
- }
- | ARITH_NOT expr { $$ = !($2); }
- | ARITH_BNOT expr { $$ = ~($2); }
- | ARITH_SUB expr %prec ARITH_UNARYMINUS { $$ = -($2); }
- | ARITH_ADD expr %prec ARITH_UNARYPLUS { $$ = $2; }
- | ARITH_NUM
- ;
-%%
-int
-arith(s)
- const char *s;
-{
- long result;
-
- arith_buf = arith_startbuf = s;
-
- INTOFF;
- result = yyparse();
- arith_lex_reset(); /* reprime lex */
- INTON;
-
- return (result);
-}
-
-
-/*
- * The exp(1) builtin.
- */
-int
-expcmd(argc, argv)
- int argc;
- char **argv;
-{
- const char *p;
- char *concat;
- char **ap;
- long i;
-
- if (argc > 1) {
- p = argv[1];
- if (argc > 2) {
- /*
- * concatenate arguments
- */
- STARTSTACKSTR(concat);
- ap = argv + 2;
- for (;;) {
- while (*p)
- STPUTC(*p++, concat);
- if ((p = *ap++) == NULL)
- break;
- STPUTC(' ', concat);
- }
- STPUTC('\0', concat);
- p = grabstackstr(concat);
- }
- } else
- p = "";
-
- i = arith(p);
-
- out1fmt("%ld\n", i);
- return (! i);
-}
-
-/*************************/
-#ifdef TEST_ARITH
-#include <stdio.h>
-main(argc, argv)
- char *argv[];
-{
- printf("%d\n", exp(argv[1]));
-}
-error(s)
- char *s;
-{
- fprintf(stderr, "exp: %s\n", s);
- exit(1);
-}
-#endif
-
-void
-yyerror(s)
- const char *s;
-{
-
-// yyerrok;
- yyclearin;
- arith_lex_reset(); /* reprime lex */
- error("arithmetic expression: %s: \"%s\"", s, arith_startbuf);
- /* NOTREACHED */
-}
diff --git a/sh/arith_lex.c b/sh/arith_lex.c
deleted file mode 100644
index 9a132dd..0000000
--- a/sh/arith_lex.c
+++ /dev/null
@@ -1,1890 +0,0 @@
-#line 2 "arith_lex.c"
-
-#line 4 "arith_lex.c"
-
-#define YY_INT_ALIGNED short int
-
-/* A lexical scanner generated by flex */
-
-#define FLEX_SCANNER
-#define YY_FLEX_MAJOR_VERSION 2
-#define YY_FLEX_MINOR_VERSION 5
-#define YY_FLEX_SUBMINOR_VERSION 31
-#if YY_FLEX_SUBMINOR_VERSION > 0
-#define FLEX_BETA
-#endif
-
-/* First, we deal with platform-specific or compiler-specific issues. */
-
-/* begin standard C headers. */
-#include <stdio.h>
-#include <string.h>
-#include <errno.h>
-#include <stdlib.h>
-
-/* end standard C headers. */
-
-/* flex integer type definitions */
-
-#ifndef FLEXINT_H
-#define FLEXINT_H
-
-/* C99 systems have <inttypes.h>. Non-C99 systems may or may not. */
-
-#if defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L
-#include <inttypes.h>
-typedef int8_t flex_int8_t;
-typedef uint8_t flex_uint8_t;
-typedef int16_t flex_int16_t;
-typedef uint16_t flex_uint16_t;
-typedef int32_t flex_int32_t;
-typedef uint32_t flex_uint32_t;
-#else
-typedef signed char flex_int8_t;
-typedef short int flex_int16_t;
-typedef int flex_int32_t;
-typedef unsigned char flex_uint8_t;
-typedef unsigned short int flex_uint16_t;
-typedef unsigned int flex_uint32_t;
-#endif /* ! C99 */
-
-/* Limits of integral types. */
-#ifndef INT8_MIN
-#define INT8_MIN (-128)
-#endif
-#ifndef INT16_MIN
-#define INT16_MIN (-32767-1)
-#endif
-#ifndef INT32_MIN
-#define INT32_MIN (-2147483647-1)
-#endif
-#ifndef INT8_MAX
-#define INT8_MAX (127)
-#endif
-#ifndef INT16_MAX
-#define INT16_MAX (32767)
-#endif
-#ifndef INT32_MAX
-#define INT32_MAX (2147483647)
-#endif
-#ifndef UINT8_MAX
-#define UINT8_MAX (255U)
-#endif
-#ifndef UINT16_MAX
-#define UINT16_MAX (65535U)
-#endif
-#ifndef UINT32_MAX
-#define UINT32_MAX (4294967295U)
-#endif
-
-#endif /* ! FLEXINT_H */
-
-#ifdef __cplusplus
-
-/* The "const" storage-class-modifier is valid. */
-#define YY_USE_CONST
-
-#else /* ! __cplusplus */
-
-#if __STDC__
-
-#define YY_USE_CONST
-
-#endif /* __STDC__ */
-#endif /* ! __cplusplus */
-
-#ifdef YY_USE_CONST
-#define yyconst const
-#else
-#define yyconst
-#endif
-
-/* Returned upon end-of-file. */
-#define YY_NULL 0
-
-/* Promotes a possibly negative, possibly signed char to an unsigned
- * integer for use as an array index. If the signed char is negative,
- * we want to instead treat it as an 8-bit unsigned char, hence the
- * double cast.
- */
-#define YY_SC_TO_UI(c) ((unsigned int) (unsigned char) c)
-
-/* Enter a start condition. This macro really ought to take a parameter,
- * but we do it the disgusting crufty way forced on us by the ()-less
- * definition of BEGIN.
- */
-#define BEGIN (yy_start) = 1 + 2 *
-
-/* Translate the current start state into a value that can be later handed
- * to BEGIN to return to the state. The YYSTATE alias is for lex
- * compatibility.
- */
-#define YY_START (((yy_start) - 1) / 2)
-#define YYSTATE YY_START
-
-/* Action number for EOF rule of a given start state. */
-#define YY_STATE_EOF(state) (YY_END_OF_BUFFER + state + 1)
-
-/* Special action meaning "start processing a new file". */
-#define YY_NEW_FILE yyrestart(yyin )
-
-#define YY_END_OF_BUFFER_CHAR 0
-
-/* Size of default input buffer. */
-#ifndef YY_BUF_SIZE
-#define YY_BUF_SIZE 16384
-#endif
-
-#ifndef YY_TYPEDEF_YY_BUFFER_STATE
-#define YY_TYPEDEF_YY_BUFFER_STATE
-typedef struct yy_buffer_state *YY_BUFFER_STATE;
-#endif
-
-extern int yyleng;
-
-extern FILE *yyin, *yyout;
-
-#define EOB_ACT_CONTINUE_SCAN 0
-#define EOB_ACT_END_OF_FILE 1
-#define EOB_ACT_LAST_MATCH 2
-
- #define YY_LESS_LINENO(n)
-
-/* Return all but the first "n" matched characters back to the input stream. */
-#define yyless(n) \
- do \
- { \
- /* Undo effects of setting up yytext. */ \
- int yyless_macro_arg = (n); \
- YY_LESS_LINENO(yyless_macro_arg);\
- *yy_cp = (yy_hold_char); \
- YY_RESTORE_YY_MORE_OFFSET \
- (yy_c_buf_p) = yy_cp = yy_bp + yyless_macro_arg - YY_MORE_ADJ; \
- YY_DO_BEFORE_ACTION; /* set up yytext again */ \
- } \
- while ( 0 )
-
-#define unput(c) yyunput( c, (yytext_ptr) )
-
-/* The following is because we cannot portably get our hands on size_t
- * (without autoconf's help, which isn't available because we want
- * flex-generated scanners to compile on their own).
- */
-
-#ifndef YY_TYPEDEF_YY_SIZE_T
-#define YY_TYPEDEF_YY_SIZE_T
-typedef unsigned int yy_size_t;
-#endif
-
-#ifndef YY_STRUCT_YY_BUFFER_STATE
-#define YY_STRUCT_YY_BUFFER_STATE
-struct yy_buffer_state
- {
- FILE *yy_input_file;
-
- char *yy_ch_buf; /* input buffer */
- char *yy_buf_pos; /* current position in input buffer */
-
- /* Size of input buffer in bytes, not including room for EOB
- * characters.
- */
- yy_size_t yy_buf_size;
-
- /* Number of characters read into yy_ch_buf, not including EOB
- * characters.
- */
- int yy_n_chars;
-
- /* Whether we "own" the buffer - i.e., we know we created it,
- * and can realloc() it to grow it, and should free() it to
- * delete it.
- */
- int yy_is_our_buffer;
-
- /* Whether this is an "interactive" input source; if so, and
- * if we're using stdio for input, then we want to use getc()
- * instead of fread(), to make sure we stop fetching input after
- * each newline.
- */
- int yy_is_interactive;
-
- /* Whether we're considered to be at the beginning of a line.
- * If so, '^' rules will be active on the next match, otherwise
- * not.
- */
- int yy_at_bol;
-
- int yy_bs_lineno; /**< The line count. */
- int yy_bs_column; /**< The column count. */
-
- /* Whether to try to fill the input buffer when we reach the
- * end of it.
- */
- int yy_fill_buffer;
-
- int yy_buffer_status;
-
-#define YY_BUFFER_NEW 0
-#define YY_BUFFER_NORMAL 1
- /* When an EOF's been seen but there's still some text to process
- * then we mark the buffer as YY_EOF_PENDING, to indicate that we
- * shouldn't try reading from the input source any more. We might
- * still have a bunch of tokens to match, though, because of
- * possible backing-up.
- *
- * When we actually see the EOF, we change the status to "new"
- * (via yyrestart()), so that the user can continue scanning by
- * just pointing yyin at a new input file.
- */
-#define YY_BUFFER_EOF_PENDING 2
-
- };
-#endif /* !YY_STRUCT_YY_BUFFER_STATE */
-
-/* Stack of input buffers. */
-static size_t yy_buffer_stack_top = 0; /**< index of top of stack. */
-static size_t yy_buffer_stack_max = 0; /**< capacity of stack. */
-static YY_BUFFER_STATE * yy_buffer_stack = 0; /**< Stack as an array. */
-
-/* We provide macros for accessing buffer states in case in the
- * future we want to put the buffer states in a more general
- * "scanner state".
- *
- * Returns the top of the stack, or NULL.
- */
-#define YY_CURRENT_BUFFER ( (yy_buffer_stack) \
- ? (yy_buffer_stack)[(yy_buffer_stack_top)] \
- : NULL)
-
-/* Same as previous macro, but useful when we know that the buffer stack is not
- * NULL or when we need an lvalue. For internal use only.
- */
-#define YY_CURRENT_BUFFER_LVALUE (yy_buffer_stack)[(yy_buffer_stack_top)]
-
-/* yy_hold_char holds the character lost when yytext is formed. */
-static char yy_hold_char;
-static int yy_n_chars; /* number of characters read into yy_ch_buf */
-int yyleng;
-
-/* Points to current character in buffer. */
-static char *yy_c_buf_p = (char *) 0;
-static int yy_init = 1; /* whether we need to initialize */
-static int yy_start = 0; /* start state number */
-
-/* Flag which is used to allow yywrap()'s to do buffer switches
- * instead of setting up a fresh yyin. A bit of a hack ...
- */
-static int yy_did_buffer_switch_on_eof;
-
-void yyrestart (FILE *input_file );
-void yy_switch_to_buffer (YY_BUFFER_STATE new_buffer );
-YY_BUFFER_STATE yy_create_buffer (FILE *file,int size );
-void yy_delete_buffer (YY_BUFFER_STATE b );
-void yy_flush_buffer (YY_BUFFER_STATE b );
-void yypush_buffer_state (YY_BUFFER_STATE new_buffer );
-void yypop_buffer_state (void );
-
-static void yyensure_buffer_stack (void );
-static void yy_load_buffer_state (void );
-static void yy_init_buffer (YY_BUFFER_STATE b,FILE *file );
-
-#define YY_FLUSH_BUFFER yy_flush_buffer(YY_CURRENT_BUFFER )
-
-YY_BUFFER_STATE yy_scan_buffer (char *base,yy_size_t size );
-YY_BUFFER_STATE yy_scan_string (yyconst char *yy_str );
-YY_BUFFER_STATE yy_scan_bytes (yyconst char *bytes,int len );
-
-void *yyalloc (yy_size_t );
-void *yyrealloc (void *,yy_size_t );
-void yyfree (void * );
-
-#define yy_new_buffer yy_create_buffer
-
-#define yy_set_interactive(is_interactive) \
- { \
- if ( ! YY_CURRENT_BUFFER ){ \
- yyensure_buffer_stack (); \
- YY_CURRENT_BUFFER_LVALUE = \
- yy_create_buffer(yyin,YY_BUF_SIZE ); \
- } \
- YY_CURRENT_BUFFER_LVALUE->yy_is_interactive = is_interactive; \
- }
-
-#define yy_set_bol(at_bol) \
- { \
- if ( ! YY_CURRENT_BUFFER ){\
- yyensure_buffer_stack (); \
- YY_CURRENT_BUFFER_LVALUE = \
- yy_create_buffer(yyin,YY_BUF_SIZE ); \
- } \
- YY_CURRENT_BUFFER_LVALUE->yy_at_bol = at_bol; \
- }
-
-#define YY_AT_BOL() (YY_CURRENT_BUFFER_LVALUE->yy_at_bol)
-
-/* Begin user sect3 */
-
-#define yywrap(n) 1
-#define YY_SKIP_YYWRAP
-
-typedef unsigned char YY_CHAR;
-
-FILE *yyin = (FILE *) 0, *yyout = (FILE *) 0;
-
-typedef int yy_state_type;
-
-extern int yylineno;
-
-int yylineno = 1;
-
-extern char *yytext;
-#define yytext_ptr yytext
-
-static yy_state_type yy_get_previous_state (void );
-static yy_state_type yy_try_NUL_trans (yy_state_type current_state );
-static int yy_get_next_buffer (void );
-static void yy_fatal_error (yyconst char msg[] );
-
-/* Done after the current pattern has been matched and before the
- * corresponding action - sets up yytext.
- */
-#define YY_DO_BEFORE_ACTION \
- (yytext_ptr) = yy_bp; \
- yyleng = (size_t) (yy_cp - yy_bp); \
- (yy_hold_char) = *yy_cp; \
- *yy_cp = '\0'; \
- (yy_c_buf_p) = yy_cp;
-
-#define YY_NUM_RULES 29
-#define YY_END_OF_BUFFER 30
-/* This struct is not used in this scanner,
- but its presence is necessary. */
-struct yy_trans_info
- {
- flex_int32_t yy_verify;
- flex_int32_t yy_nxt;
- };
-static yyconst flex_int16_t yy_accept[39] =
- { 0,
- 0, 0, 30, 28, 1, 1, 27, 23, 12, 6,
- 7, 21, 24, 25, 22, 3, 4, 17, 28, 15,
- 5, 11, 10, 26, 14, 9, 3, 0, 4, 19,
- 18, 13, 16, 20, 5, 8, 2, 0
- } ;
-
-static yyconst flex_int32_t yy_ec[256] =
- { 0,
- 1, 1, 1, 1, 1, 1, 1, 1, 2, 3,
- 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
- 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
- 1, 2, 4, 1, 1, 1, 5, 6, 1, 7,
- 8, 9, 10, 1, 11, 1, 12, 13, 14, 14,
- 14, 14, 14, 14, 14, 15, 15, 1, 1, 16,
- 17, 18, 1, 1, 19, 19, 19, 19, 19, 19,
- 20, 20, 20, 20, 20, 20, 20, 20, 20, 20,
- 20, 20, 20, 20, 20, 20, 20, 20, 20, 20,
- 1, 1, 1, 21, 20, 1, 19, 19, 19, 19,
-
- 19, 19, 20, 20, 20, 20, 20, 20, 20, 20,
- 20, 20, 20, 20, 20, 20, 20, 20, 20, 22,
- 20, 20, 1, 23, 1, 24, 1, 1, 1, 1,
- 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
- 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
- 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
- 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
- 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
- 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
- 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
-
- 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
- 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
- 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
- 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
- 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
- 1, 1, 1, 1, 1
- } ;
-
-static yyconst flex_int32_t yy_meta[25] =
- { 0,
- 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
- 1, 1, 2, 2, 2, 1, 1, 1, 2, 3,
- 1, 3, 1, 1
- } ;
-
-static yyconst flex_int16_t yy_base[41] =
- { 0,
- 0, 0, 47, 48, 48, 48, 29, 48, 39, 48,
- 48, 48, 48, 48, 48, 12, 14, 14, 27, 15,
- 0, 48, 20, 48, 48, 48, 22, 0, 24, 48,
- 48, 48, 48, 48, 0, 48, 0, 48, 38, 40
- } ;
-
-static yyconst flex_int16_t yy_def[41] =
- { 0,
- 38, 1, 38, 38, 38, 38, 38, 38, 38, 38,
- 38, 38, 38, 38, 38, 38, 38, 38, 38, 38,
- 39, 38, 38, 38, 38, 38, 38, 40, 38, 38,
- 38, 38, 38, 38, 39, 38, 40, 0, 38, 38
- } ;
-
-static yyconst flex_int16_t yy_nxt[73] =
- { 0,
- 4, 5, 6, 7, 8, 9, 10, 11, 12, 13,
- 14, 15, 16, 17, 17, 18, 19, 20, 21, 21,
- 22, 21, 23, 24, 27, 27, 29, 29, 29, 30,
- 31, 33, 34, 28, 27, 27, 29, 29, 29, 35,
- 35, 37, 36, 32, 26, 25, 38, 3, 38, 38,
- 38, 38, 38, 38, 38, 38, 38, 38, 38, 38,
- 38, 38, 38, 38, 38, 38, 38, 38, 38, 38,
- 38, 38
- } ;
-
-static yyconst flex_int16_t yy_chk[73] =
- { 0,
- 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
- 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
- 1, 1, 1, 1, 16, 16, 17, 17, 17, 18,
- 18, 20, 20, 16, 27, 27, 29, 29, 29, 39,
- 39, 40, 23, 19, 9, 7, 3, 38, 38, 38,
- 38, 38, 38, 38, 38, 38, 38, 38, 38, 38,
- 38, 38, 38, 38, 38, 38, 38, 38, 38, 38,
- 38, 38
- } ;
-
-static yy_state_type yy_last_accepting_state;
-static char *yy_last_accepting_cpos;
-
-extern int yy_flex_debug;
-int yy_flex_debug = 0;
-
-/* The intent behind this definition is that it'll catch
- * any uses of REJECT which flex missed.
- */
-#define REJECT reject_used_but_not_detected
-#define yymore() yymore_used_but_not_detected
-#define YY_MORE_ADJ 0
-#define YY_RESTORE_YY_MORE_OFFSET
-char *yytext;
-#line 1 "arith_lex.l"
-#line 2 "arith_lex.l"
-/* $NetBSD: arith_lex.l,v 1.12.6.1 2005/04/07 11:38:58 tron Exp $ */
-
-/*-
- * Copyright (c) 1993
- * The Regents of the University of California. All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Kenneth Almquist.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <sys/cdefs.h>
-#ifndef lint
-#if 0
-static char sccsid[] = "@(#)arith_lex.l 8.3 (Berkeley) 5/4/95";
-#else
-__RCSID("$NetBSD: arith_lex.l,v 1.12.6.1 2005/04/07 11:38:58 tron Exp $");
-#endif
-#endif /* not lint */
-
-#include <unistd.h>
-#include "arith.h"
-#include "error.h"
-#include "expand.h"
-#include "var.h"
-
-extern int yylval;
-extern char *arith_buf, *arith_startbuf;
-#undef YY_INPUT
-#define YY_INPUT(buf,result,max) \
- result = (*buf = *arith_buf++) ? 1 : YY_NULL;
-#define YY_NO_UNPUT
-#line 526 "arith_lex.c"
-
-#define INITIAL 0
-
-#ifndef YY_NO_UNISTD_H
-/* Special case for "unistd.h", since it is non-ANSI. We include it way
- * down here because we want the user's section 1 to have been scanned first.
- * The user has a chance to override it with an option.
- */
-#include <unistd.h>
-#endif
-
-#ifndef YY_EXTRA_TYPE
-#define YY_EXTRA_TYPE void *
-#endif
-
-/* Macros after this point can all be overridden by user definitions in
- * section 1.
- */
-
-#ifndef YY_SKIP_YYWRAP
-#ifdef __cplusplus
-extern "C" int yywrap (void );
-#else
-extern int yywrap (void );
-#endif
-#endif
-
- static void yyunput (int c,char *buf_ptr );
-
-#ifndef yytext_ptr
-static void yy_flex_strncpy (char *,yyconst char *,int );
-#endif
-
-#ifdef YY_NEED_STRLEN
-static int yy_flex_strlen (yyconst char * );
-#endif
-
-#ifndef YY_NO_INPUT
-
-#ifdef __cplusplus
-static int yyinput (void );
-#else
-static int input (void );
-#endif
-
-#endif
-
-/* Amount of stuff to slurp up with each read. */
-#ifndef YY_READ_BUF_SIZE
-#define YY_READ_BUF_SIZE 8192
-#endif
-
-/* Copy whatever the last rule matched to the standard output. */
-#ifndef ECHO
-/* This used to be an fputs(), but since the string might contain NUL's,
- * we now use fwrite().
- */
-#define ECHO (void) fwrite( yytext, yyleng, 1, yyout )
-#endif
-
-/* Gets input and stuffs it into "buf". number of characters read, or YY_NULL,
- * is returned in "result".
- */
-#ifndef YY_INPUT
-#define YY_INPUT(buf,result,max_size) \
- if ( YY_CURRENT_BUFFER_LVALUE->yy_is_interactive ) \
- { \
- int c = '*'; \
- size_t n; \
- for ( n = 0; n < max_size && \
- (c = getc( yyin )) != EOF && c != '\n'; ++n ) \
- buf[n] = (char) c; \
- if ( c == '\n' ) \
- buf[n++] = (char) c; \
- if ( c == EOF && ferror( yyin ) ) \
- YY_FATAL_ERROR( "input in flex scanner failed" ); \
- result = n; \
- } \
- else \
- { \
- errno=0; \
- while ( (result = fread(buf, 1, max_size, yyin))==0 && ferror(yyin)) \
- { \
- if( errno != EINTR) \
- { \
- YY_FATAL_ERROR( "input in flex scanner failed" ); \
- break; \
- } \
- errno=0; \
- clearerr(yyin); \
- } \
- }\
-\
-
-#endif
-
-/* No semi-colon after return; correct usage is to write "yyterminate();" -
- * we don't want an extra ';' after the "return" because that will cause
- * some compilers to complain about unreachable statements.
- */
-#ifndef yyterminate
-#define yyterminate() return YY_NULL
-#endif
-
-/* Number of entries by which start-condition stack grows. */
-#ifndef YY_START_STACK_INCR
-#define YY_START_STACK_INCR 25
-#endif
-
-/* Report a fatal error. */
-#ifndef YY_FATAL_ERROR
-#define YY_FATAL_ERROR(msg) yy_fatal_error( msg )
-#endif
-
-/* end tables serialization structures and prototypes */
-
-/* Default declaration of generated scanner - a define so the user can
- * easily add parameters.
- */
-#ifndef YY_DECL
-#define YY_DECL_IS_OURS 1
-
-extern int yylex (void);
-
-#define YY_DECL int yylex (void)
-#endif /* !YY_DECL */
-
-/* Code executed at the beginning of each rule, after yytext and yyleng
- * have been set up.
- */
-#ifndef YY_USER_ACTION
-#define YY_USER_ACTION
-#endif
-
-/* Code executed at the end of each rule. */
-#ifndef YY_BREAK
-#define YY_BREAK break;
-#endif
-
-#define YY_RULE_SETUP \
- YY_USER_ACTION
-
-/** The main scanner function which does all the work.
- */
-YY_DECL
-{
- register yy_state_type yy_current_state;
- register char *yy_cp, *yy_bp;
- register int yy_act;
-
-#line 60 "arith_lex.l"
-
-#line 679 "arith_lex.c"
-
- if ( (yy_init) )
- {
- (yy_init) = 0;
-
-#ifdef YY_USER_INIT
- YY_USER_INIT;
-#endif
-
- if ( ! (yy_start) )
- (yy_start) = 1; /* first start state */
-
- if ( ! yyin )
- yyin = stdin;
-
- if ( ! yyout )
- yyout = stdout;
-
- if ( ! YY_CURRENT_BUFFER ) {
- yyensure_buffer_stack ();
- YY_CURRENT_BUFFER_LVALUE =
- yy_create_buffer(yyin,YY_BUF_SIZE );
- }
-
- yy_load_buffer_state( );
- }
-
- while ( 1 ) /* loops until end-of-file is reached */
- {
- yy_cp = (yy_c_buf_p);
-
- /* Support of yytext. */
- *yy_cp = (yy_hold_char);
-
- /* yy_bp points to the position in yy_ch_buf of the start of
- * the current run.
- */
- yy_bp = yy_cp;
-
- yy_current_state = (yy_start);
-yy_match:
- do
- {
- register YY_CHAR yy_c = yy_ec[YY_SC_TO_UI(*yy_cp)];
- if ( yy_accept[yy_current_state] )
- {
- (yy_last_accepting_state) = yy_current_state;
- (yy_last_accepting_cpos) = yy_cp;
- }
- while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state )
- {
- yy_current_state = (int) yy_def[yy_current_state];
- if ( yy_current_state >= 39 )
- yy_c = yy_meta[(unsigned int) yy_c];
- }
- yy_current_state = yy_nxt[yy_base[yy_current_state] + (unsigned int) yy_c];
- ++yy_cp;
- }
- while ( yy_base[yy_current_state] != 48 );
-
-yy_find_action:
- yy_act = yy_accept[yy_current_state];
- if ( yy_act == 0 )
- { /* have to back up */
- yy_cp = (yy_last_accepting_cpos);
- yy_current_state = (yy_last_accepting_state);
- yy_act = yy_accept[yy_current_state];
- }
-
- YY_DO_BEFORE_ACTION;
-
-do_action: /* This label is used only to access EOF actions. */
-
- switch ( yy_act )
- { /* beginning of action switch */
- case 0: /* must back up */
- /* undo the effects of YY_DO_BEFORE_ACTION */
- *yy_cp = (yy_hold_char);
- yy_cp = (yy_last_accepting_cpos);
- yy_current_state = (yy_last_accepting_state);
- goto yy_find_action;
-
-case 1:
-/* rule 1 can match eol */
-YY_RULE_SETUP
-#line 61 "arith_lex.l"
-{ ; }
- YY_BREAK
-case 2:
-YY_RULE_SETUP
-#line 62 "arith_lex.l"
-{ yylval = strtol(yytext, 0, 0); return(ARITH_NUM); }
- YY_BREAK
-case 3:
-YY_RULE_SETUP
-#line 63 "arith_lex.l"
-{ yylval = strtol(yytext, 0, 0); return(ARITH_NUM); }
- YY_BREAK
-case 4:
-YY_RULE_SETUP
-#line 64 "arith_lex.l"
-{ yylval = strtol(yytext, 0, 0); return(ARITH_NUM); }
- YY_BREAK
-case 5:
-YY_RULE_SETUP
-#line 65 "arith_lex.l"
-{ char *v = lookupvar(yytext);
- if (v) {
- yylval = strtol(v, &v, 0);
- if (*v == 0)
- return ARITH_NUM;
- }
- error("arith: syntax error: \"%s\"", arith_startbuf);
- }
- YY_BREAK
-case 6:
-YY_RULE_SETUP
-#line 73 "arith_lex.l"
-{ return(ARITH_LPAREN); }
- YY_BREAK
-case 7:
-YY_RULE_SETUP
-#line 74 "arith_lex.l"
-{ return(ARITH_RPAREN); }
- YY_BREAK
-case 8:
-YY_RULE_SETUP
-#line 75 "arith_lex.l"
-{ return(ARITH_OR); }
- YY_BREAK
-case 9:
-YY_RULE_SETUP
-#line 76 "arith_lex.l"
-{ return(ARITH_AND); }
- YY_BREAK
-case 10:
-YY_RULE_SETUP
-#line 77 "arith_lex.l"
-{ return(ARITH_BOR); }
- YY_BREAK
-case 11:
-YY_RULE_SETUP
-#line 78 "arith_lex.l"
-{ return(ARITH_BXOR); }
- YY_BREAK
-case 12:
-YY_RULE_SETUP
-#line 79 "arith_lex.l"
-{ return(ARITH_BAND); }
- YY_BREAK
-case 13:
-YY_RULE_SETUP
-#line 80 "arith_lex.l"
-{ return(ARITH_EQ); }
- YY_BREAK
-case 14:
-YY_RULE_SETUP
-#line 81 "arith_lex.l"
-{ return(ARITH_NE); }
- YY_BREAK
-case 15:
-YY_RULE_SETUP
-#line 82 "arith_lex.l"
-{ return(ARITH_GT); }
- YY_BREAK
-case 16:
-YY_RULE_SETUP
-#line 83 "arith_lex.l"
-{ return(ARITH_GE); }
- YY_BREAK
-case 17:
-YY_RULE_SETUP
-#line 84 "arith_lex.l"
-{ return(ARITH_LT); }
- YY_BREAK
-case 18:
-YY_RULE_SETUP
-#line 85 "arith_lex.l"
-{ return(ARITH_LE); }
- YY_BREAK
-case 19:
-YY_RULE_SETUP
-#line 86 "arith_lex.l"
-{ return(ARITH_LSHIFT); }
- YY_BREAK
-case 20:
-YY_RULE_SETUP
-#line 87 "arith_lex.l"
-{ return(ARITH_RSHIFT); }
- YY_BREAK
-case 21:
-YY_RULE_SETUP
-#line 88 "arith_lex.l"
-{ return(ARITH_MUL); }
- YY_BREAK
-case 22:
-YY_RULE_SETUP
-#line 89 "arith_lex.l"
-{ return(ARITH_DIV); }
- YY_BREAK
-case 23:
-YY_RULE_SETUP
-#line 90 "arith_lex.l"
-{ return(ARITH_REM); }
- YY_BREAK
-case 24:
-YY_RULE_SETUP
-#line 91 "arith_lex.l"
-{ return(ARITH_ADD); }
- YY_BREAK
-case 25:
-YY_RULE_SETUP
-#line 92 "arith_lex.l"
-{ return(ARITH_SUB); }
- YY_BREAK
-case 26:
-YY_RULE_SETUP
-#line 93 "arith_lex.l"
-{ return(ARITH_BNOT); }
- YY_BREAK
-case 27:
-YY_RULE_SETUP
-#line 94 "arith_lex.l"
-{ return(ARITH_NOT); }
- YY_BREAK
-case 28:
-YY_RULE_SETUP
-#line 95 "arith_lex.l"
-{ error("arith: syntax error: \"%s\"", arith_startbuf); }
- YY_BREAK
-case 29:
-YY_RULE_SETUP
-#line 96 "arith_lex.l"
-ECHO;
- YY_BREAK
-#line 915 "arith_lex.c"
-case YY_STATE_EOF(INITIAL):
- yyterminate();
-
- case YY_END_OF_BUFFER:
- {
- /* Amount of text matched not including the EOB char. */
- int yy_amount_of_matched_text = (int) (yy_cp - (yytext_ptr)) - 1;
-
- /* Undo the effects of YY_DO_BEFORE_ACTION. */
- *yy_cp = (yy_hold_char);
- YY_RESTORE_YY_MORE_OFFSET
-
- if ( YY_CURRENT_BUFFER_LVALUE->yy_buffer_status == YY_BUFFER_NEW )
- {
- /* We're scanning a new file or input source. It's
- * possible that this happened because the user
- * just pointed yyin at a new source and called
- * yylex(). If so, then we have to assure
- * consistency between YY_CURRENT_BUFFER and our
- * globals. Here is the right place to do so, because
- * this is the first action (other than possibly a
- * back-up) that will match for the new input source.
- */
- (yy_n_chars) = YY_CURRENT_BUFFER_LVALUE->yy_n_chars;
- YY_CURRENT_BUFFER_LVALUE->yy_input_file = yyin;
- YY_CURRENT_BUFFER_LVALUE->yy_buffer_status = YY_BUFFER_NORMAL;
- }
-
- /* Note that here we test for yy_c_buf_p "<=" to the position
- * of the first EOB in the buffer, since yy_c_buf_p will
- * already have been incremented past the NUL character
- * (since all states make transitions on EOB to the
- * end-of-buffer state). Contrast this with the test
- * in input().
- */
- if ( (yy_c_buf_p) <= &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars)] )
- { /* This was really a NUL. */
- yy_state_type yy_next_state;
-
- (yy_c_buf_p) = (yytext_ptr) + yy_amount_of_matched_text;
-
- yy_current_state = yy_get_previous_state( );
-
- /* Okay, we're now positioned to make the NUL
- * transition. We couldn't have
- * yy_get_previous_state() go ahead and do it
- * for us because it doesn't know how to deal
- * with the possibility of jamming (and we don't
- * want to build jamming into it because then it
- * will run more slowly).
- */
-
- yy_next_state = yy_try_NUL_trans( yy_current_state );
-
- yy_bp = (yytext_ptr) + YY_MORE_ADJ;
-
- if ( yy_next_state )
- {
- /* Consume the NUL. */
- yy_cp = ++(yy_c_buf_p);
- yy_current_state = yy_next_state;
- goto yy_match;
- }
-
- else
- {
- yy_cp = (yy_c_buf_p);
- goto yy_find_action;
- }
- }
-
- else switch ( yy_get_next_buffer( ) )
- {
- case EOB_ACT_END_OF_FILE:
- {
- (yy_did_buffer_switch_on_eof) = 0;
-
- if ( yywrap( ) )
- {
- /* Note: because we've taken care in
- * yy_get_next_buffer() to have set up
- * yytext, we can now set up
- * yy_c_buf_p so that if some total
- * hoser (like flex itself) wants to
- * call the scanner after we return the
- * YY_NULL, it'll still work - another
- * YY_NULL will get returned.
- */
- (yy_c_buf_p) = (yytext_ptr) + YY_MORE_ADJ;
-
- yy_act = YY_STATE_EOF(YY_START);
- goto do_action;
- }
-
- else
- {
- if ( ! (yy_did_buffer_switch_on_eof) )
- YY_NEW_FILE;
- }
- break;
- }
-
- case EOB_ACT_CONTINUE_SCAN:
- (yy_c_buf_p) =
- (yytext_ptr) + yy_amount_of_matched_text;
-
- yy_current_state = yy_get_previous_state( );
-
- yy_cp = (yy_c_buf_p);
- yy_bp = (yytext_ptr) + YY_MORE_ADJ;
- goto yy_match;
-
- case EOB_ACT_LAST_MATCH:
- (yy_c_buf_p) =
- &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars)];
-
- yy_current_state = yy_get_previous_state( );
-
- yy_cp = (yy_c_buf_p);
- yy_bp = (yytext_ptr) + YY_MORE_ADJ;
- goto yy_find_action;
- }
- break;
- }
-
- default:
- YY_FATAL_ERROR(
- "fatal flex scanner internal error--no action found" );
- } /* end of action switch */
- } /* end of scanning one token */
-} /* end of yylex */
-
-/* yy_get_next_buffer - try to read in a new buffer
- *
- * Returns a code representing an action:
- * EOB_ACT_LAST_MATCH -
- * EOB_ACT_CONTINUE_SCAN - continue scanning from current position
- * EOB_ACT_END_OF_FILE - end of file
- */
-static int yy_get_next_buffer (void)
-{
- register char *dest = YY_CURRENT_BUFFER_LVALUE->yy_ch_buf;
- register char *source = (yytext_ptr);
- register int number_to_move, i;
- int ret_val;
-
- if ( (yy_c_buf_p) > &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars) + 1] )
- YY_FATAL_ERROR(
- "fatal flex scanner internal error--end of buffer missed" );
-
- if ( YY_CURRENT_BUFFER_LVALUE->yy_fill_buffer == 0 )
- { /* Don't try to fill the buffer, so this is an EOF. */
- if ( (yy_c_buf_p) - (yytext_ptr) - YY_MORE_ADJ == 1 )
- {
- /* We matched a single character, the EOB, so
- * treat this as a final EOF.
- */
- return EOB_ACT_END_OF_FILE;
- }
-
- else
- {
- /* We matched some text prior to the EOB, first
- * process it.
- */
- return EOB_ACT_LAST_MATCH;
- }
- }
-
- /* Try to read more data. */
-
- /* First move last chars to start of buffer. */
- number_to_move = (int) ((yy_c_buf_p) - (yytext_ptr)) - 1;
-
- for ( i = 0; i < number_to_move; ++i )
- *(dest++) = *(source++);
-
- if ( YY_CURRENT_BUFFER_LVALUE->yy_buffer_status == YY_BUFFER_EOF_PENDING )
- /* don't do the read, it's not guaranteed to return an EOF,
- * just force an EOF
- */
- YY_CURRENT_BUFFER_LVALUE->yy_n_chars = (yy_n_chars) = 0;
-
- else
- {
- size_t num_to_read =
- YY_CURRENT_BUFFER_LVALUE->yy_buf_size - number_to_move - 1;
-
- while ( num_to_read <= 0 )
- { /* Not enough room in the buffer - grow it. */
-
- /* just a shorter name for the current buffer */
- YY_BUFFER_STATE b = YY_CURRENT_BUFFER;
-
- int yy_c_buf_p_offset =
- (int) ((yy_c_buf_p) - b->yy_ch_buf);
-
- if ( b->yy_is_our_buffer )
- {
- int new_size = b->yy_buf_size * 2;
-
- if ( new_size <= 0 )
- b->yy_buf_size += b->yy_buf_size / 8;
- else
- b->yy_buf_size *= 2;
-
- b->yy_ch_buf = (char *)
- /* Include room in for 2 EOB chars. */
- yyrealloc((void *) b->yy_ch_buf,b->yy_buf_size + 2 );
- }
- else
- /* Can't grow it, we don't own it. */
- b->yy_ch_buf = 0;
-
- if ( ! b->yy_ch_buf )
- YY_FATAL_ERROR(
- "fatal error - scanner input buffer overflow" );
-
- (yy_c_buf_p) = &b->yy_ch_buf[yy_c_buf_p_offset];
-
- num_to_read = YY_CURRENT_BUFFER_LVALUE->yy_buf_size -
- number_to_move - 1;
-
- }
-
- if ( num_to_read > YY_READ_BUF_SIZE )
- num_to_read = YY_READ_BUF_SIZE;
-
- /* Read in more data. */
- YY_INPUT( (&YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[number_to_move]),
- (yy_n_chars), num_to_read );
-
- YY_CURRENT_BUFFER_LVALUE->yy_n_chars = (yy_n_chars);
- }
-
- if ( (yy_n_chars) == 0 )
- {
- if ( number_to_move == YY_MORE_ADJ )
- {
- ret_val = EOB_ACT_END_OF_FILE;
- yyrestart(yyin );
- }
-
- else
- {
- ret_val = EOB_ACT_LAST_MATCH;
- YY_CURRENT_BUFFER_LVALUE->yy_buffer_status =
- YY_BUFFER_EOF_PENDING;
- }
- }
-
- else
- ret_val = EOB_ACT_CONTINUE_SCAN;
-
- (yy_n_chars) += number_to_move;
- YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars)] = YY_END_OF_BUFFER_CHAR;
- YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars) + 1] = YY_END_OF_BUFFER_CHAR;
-
- (yytext_ptr) = &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[0];
-
- return ret_val;
-}
-
-/* yy_get_previous_state - get the state just before the EOB char was reached */
-
- static yy_state_type yy_get_previous_state (void)
-{
- register yy_state_type yy_current_state;
- register char *yy_cp;
-
- yy_current_state = (yy_start);
-
- for ( yy_cp = (yytext_ptr) + YY_MORE_ADJ; yy_cp < (yy_c_buf_p); ++yy_cp )
- {
- register YY_CHAR yy_c = (*yy_cp ? yy_ec[YY_SC_TO_UI(*yy_cp)] : 1);
- if ( yy_accept[yy_current_state] )
- {
- (yy_last_accepting_state) = yy_current_state;
- (yy_last_accepting_cpos) = yy_cp;
- }
- while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state )
- {
- yy_current_state = (int) yy_def[yy_current_state];
- if ( yy_current_state >= 39 )
- yy_c = yy_meta[(unsigned int) yy_c];
- }
- yy_current_state = yy_nxt[yy_base[yy_current_state] + (unsigned int) yy_c];
- }
-
- return yy_current_state;
-}
-
-/* yy_try_NUL_trans - try to make a transition on the NUL character
- *
- * synopsis
- * next_state = yy_try_NUL_trans( current_state );
- */
- static yy_state_type yy_try_NUL_trans (yy_state_type yy_current_state )
-{
- register int yy_is_jam;
- register char *yy_cp = (yy_c_buf_p);
-
- register YY_CHAR yy_c = 1;
- if ( yy_accept[yy_current_state] )
- {
- (yy_last_accepting_state) = yy_current_state;
- (yy_last_accepting_cpos) = yy_cp;
- }
- while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state )
- {
- yy_current_state = (int) yy_def[yy_current_state];
- if ( yy_current_state >= 39 )
- yy_c = yy_meta[(unsigned int) yy_c];
- }
- yy_current_state = yy_nxt[yy_base[yy_current_state] + (unsigned int) yy_c];
- yy_is_jam = (yy_current_state == 38);
-
- return yy_is_jam ? 0 : yy_current_state;
-}
-
- static void yyunput (int c, register char * yy_bp )
-{
- register char *yy_cp;
-
- yy_cp = (yy_c_buf_p);
-
- /* undo effects of setting up yytext */
- *yy_cp = (yy_hold_char);
-
- if ( yy_cp < YY_CURRENT_BUFFER_LVALUE->yy_ch_buf + 2 )
- { /* need to shift things up to make room */
- /* +2 for EOB chars. */
- register int number_to_move = (yy_n_chars) + 2;
- register char *dest = &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[
- YY_CURRENT_BUFFER_LVALUE->yy_buf_size + 2];
- register char *source =
- &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[number_to_move];
-
- while ( source > YY_CURRENT_BUFFER_LVALUE->yy_ch_buf )
- *--dest = *--source;
-
- yy_cp += (int) (dest - source);
- yy_bp += (int) (dest - source);
- YY_CURRENT_BUFFER_LVALUE->yy_n_chars =
- (yy_n_chars) = YY_CURRENT_BUFFER_LVALUE->yy_buf_size;
-
- if ( yy_cp < YY_CURRENT_BUFFER_LVALUE->yy_ch_buf + 2 )
- YY_FATAL_ERROR( "flex scanner push-back overflow" );
- }
-
- *--yy_cp = (char) c;
-
- (yytext_ptr) = yy_bp;
- (yy_hold_char) = *yy_cp;
- (yy_c_buf_p) = yy_cp;
-}
-
-#ifndef YY_NO_INPUT
-#ifdef __cplusplus
- static int yyinput (void)
-#else
- static int input (void)
-#endif
-
-{
- int c;
-
- *(yy_c_buf_p) = (yy_hold_char);
-
- if ( *(yy_c_buf_p) == YY_END_OF_BUFFER_CHAR )
- {
- /* yy_c_buf_p now points to the character we want to return.
- * If this occurs *before* the EOB characters, then it's a
- * valid NUL; if not, then we've hit the end of the buffer.
- */
- if ( (yy_c_buf_p) < &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars)] )
- /* This was really a NUL. */
- *(yy_c_buf_p) = '\0';
-
- else
- { /* need more input */
- int offset = (yy_c_buf_p) - (yytext_ptr);
- ++(yy_c_buf_p);
-
- switch ( yy_get_next_buffer( ) )
- {
- case EOB_ACT_LAST_MATCH:
- /* This happens because yy_g_n_b()
- * sees that we've accumulated a
- * token and flags that we need to
- * try matching the token before
- * proceeding. But for input(),
- * there's no matching to consider.
- * So convert the EOB_ACT_LAST_MATCH
- * to EOB_ACT_END_OF_FILE.
- */
-
- /* Reset buffer status. */
- yyrestart(yyin );
-
- /*FALLTHROUGH*/
-
- case EOB_ACT_END_OF_FILE:
- {
- if ( yywrap( ) )
- return EOF;
-
- if ( ! (yy_did_buffer_switch_on_eof) )
- YY_NEW_FILE;
-#ifdef __cplusplus
- return yyinput();
-#else
- return input();
-#endif
- }
-
- case EOB_ACT_CONTINUE_SCAN:
- (yy_c_buf_p) = (yytext_ptr) + offset;
- break;
- }
- }
- }
-
- c = *(unsigned char *) (yy_c_buf_p); /* cast for 8-bit char's */
- *(yy_c_buf_p) = '\0'; /* preserve yytext */
- (yy_hold_char) = *++(yy_c_buf_p);
-
- return c;
-}
-#endif /* ifndef YY_NO_INPUT */
-
-/** Immediately switch to a different input stream.
- * @param input_file A readable stream.
- *
- * @note This function does not reset the start condition to @c INITIAL .
- */
- void yyrestart (FILE * input_file )
-{
-
- if ( ! YY_CURRENT_BUFFER ){
- yyensure_buffer_stack ();
- YY_CURRENT_BUFFER_LVALUE =
- yy_create_buffer(yyin,YY_BUF_SIZE );
- }
-
- yy_init_buffer(YY_CURRENT_BUFFER,input_file );
- yy_load_buffer_state( );
-}
-
-/** Switch to a different input buffer.
- * @param new_buffer The new input buffer.
- *
- */
- void yy_switch_to_buffer (YY_BUFFER_STATE new_buffer )
-{
-
- /* TODO. We should be able to replace this entire function body
- * with
- * yypop_buffer_state();
- * yypush_buffer_state(new_buffer);
- */
- yyensure_buffer_stack ();
- if ( YY_CURRENT_BUFFER == new_buffer )
- return;
-
- if ( YY_CURRENT_BUFFER )
- {
- /* Flush out information for old buffer. */
- *(yy_c_buf_p) = (yy_hold_char);
- YY_CURRENT_BUFFER_LVALUE->yy_buf_pos = (yy_c_buf_p);
- YY_CURRENT_BUFFER_LVALUE->yy_n_chars = (yy_n_chars);
- }
-
- YY_CURRENT_BUFFER_LVALUE = new_buffer;
- yy_load_buffer_state( );
-
- /* We don't actually know whether we did this switch during
- * EOF (yywrap()) processing, but the only time this flag
- * is looked at is after yywrap() is called, so it's safe
- * to go ahead and always set it.
- */
- (yy_did_buffer_switch_on_eof) = 1;
-}
-
-static void yy_load_buffer_state (void)
-{
- (yy_n_chars) = YY_CURRENT_BUFFER_LVALUE->yy_n_chars;
- (yytext_ptr) = (yy_c_buf_p) = YY_CURRENT_BUFFER_LVALUE->yy_buf_pos;
- yyin = YY_CURRENT_BUFFER_LVALUE->yy_input_file;
- (yy_hold_char) = *(yy_c_buf_p);
-}
-
-/** Allocate and initialize an input buffer state.
- * @param file A readable stream.
- * @param size The character buffer size in bytes. When in doubt, use @c YY_BUF_SIZE.
- *
- * @return the allocated buffer state.
- */
- YY_BUFFER_STATE yy_create_buffer (FILE * file, int size )
-{
- YY_BUFFER_STATE b;
-
- b = (YY_BUFFER_STATE) yyalloc(sizeof( struct yy_buffer_state ) );
- if ( ! b )
- YY_FATAL_ERROR( "out of dynamic memory in yy_create_buffer()" );
-
- b->yy_buf_size = size;
-
- /* yy_ch_buf has to be 2 characters longer than the size given because
- * we need to put in 2 end-of-buffer characters.
- */
- b->yy_ch_buf = (char *) yyalloc(b->yy_buf_size + 2 );
- if ( ! b->yy_ch_buf )
- YY_FATAL_ERROR( "out of dynamic memory in yy_create_buffer()" );
-
- b->yy_is_our_buffer = 1;
-
- yy_init_buffer(b,file );
-
- return b;
-}
-
-/** Destroy the buffer.
- * @param b a buffer created with yy_create_buffer()
- *
- */
- void yy_delete_buffer (YY_BUFFER_STATE b )
-{
-
- if ( ! b )
- return;
-
- if ( b == YY_CURRENT_BUFFER ) /* Not sure if we should pop here. */
- YY_CURRENT_BUFFER_LVALUE = (YY_BUFFER_STATE) 0;
-
- if ( b->yy_is_our_buffer )
- yyfree((void *) b->yy_ch_buf );
-
- yyfree((void *) b );
-}
-
-#ifndef __cplusplus
-extern int isatty (int );
-#endif /* __cplusplus */
-
-/* Initializes or reinitializes a buffer.
- * This function is sometimes called more than once on the same buffer,
- * such as during a yyrestart() or at EOF.
- */
- static void yy_init_buffer (YY_BUFFER_STATE b, FILE * file )
-
-{
- int oerrno = errno;
-
- yy_flush_buffer(b );
-
- b->yy_input_file = file;
- b->yy_fill_buffer = 1;
-
- /* If b is the current buffer, then yy_init_buffer was _probably_
- * called from yyrestart() or through yy_get_next_buffer.
- * In that case, we don't want to reset the lineno or column.
- */
- if (b != YY_CURRENT_BUFFER){
- b->yy_bs_lineno = 1;
- b->yy_bs_column = 0;
- }
-
- b->yy_is_interactive = file ? (isatty( fileno(file) ) > 0) : 0;
-
- errno = oerrno;
-}
-
-/** Discard all buffered characters. On the next scan, YY_INPUT will be called.
- * @param b the buffer state to be flushed, usually @c YY_CURRENT_BUFFER.
- *
- */
- void yy_flush_buffer (YY_BUFFER_STATE b )
-{
- if ( ! b )
- return;
-
- b->yy_n_chars = 0;
-
- /* We always need two end-of-buffer characters. The first causes
- * a transition to the end-of-buffer state. The second causes
- * a jam in that state.
- */
- b->yy_ch_buf[0] = YY_END_OF_BUFFER_CHAR;
- b->yy_ch_buf[1] = YY_END_OF_BUFFER_CHAR;
-
- b->yy_buf_pos = &b->yy_ch_buf[0];
-
- b->yy_at_bol = 1;
- b->yy_buffer_status = YY_BUFFER_NEW;
-
- if ( b == YY_CURRENT_BUFFER )
- yy_load_buffer_state( );
-}
-
-/** Pushes the new state onto the stack. The new state becomes
- * the current state. This function will allocate the stack
- * if necessary.
- * @param new_buffer The new state.
- *
- */
-void yypush_buffer_state (YY_BUFFER_STATE new_buffer )
-{
- if (new_buffer == NULL)
- return;
-
- yyensure_buffer_stack();
-
- /* This block is copied from yy_switch_to_buffer. */
- if ( YY_CURRENT_BUFFER )
- {
- /* Flush out information for old buffer. */
- *(yy_c_buf_p) = (yy_hold_char);
- YY_CURRENT_BUFFER_LVALUE->yy_buf_pos = (yy_c_buf_p);
- YY_CURRENT_BUFFER_LVALUE->yy_n_chars = (yy_n_chars);
- }
-
- /* Only push if top exists. Otherwise, replace top. */
- if (YY_CURRENT_BUFFER)
- (yy_buffer_stack_top)++;
- YY_CURRENT_BUFFER_LVALUE = new_buffer;
-
- /* copied from yy_switch_to_buffer. */
- yy_load_buffer_state( );
- (yy_did_buffer_switch_on_eof) = 1;
-}
-
-/** Removes and deletes the top of the stack, if present.
- * The next element becomes the new top.
- *
- */
-void yypop_buffer_state (void)
-{
- if (!YY_CURRENT_BUFFER)
- return;
-
- yy_delete_buffer(YY_CURRENT_BUFFER );
- YY_CURRENT_BUFFER_LVALUE = NULL;
- if ((yy_buffer_stack_top) > 0)
- --(yy_buffer_stack_top);
-
- if (YY_CURRENT_BUFFER) {
- yy_load_buffer_state( );
- (yy_did_buffer_switch_on_eof) = 1;
- }
-}
-
-/* Allocates the stack if it does not exist.
- * Guarantees space for at least one push.
- */
-static void yyensure_buffer_stack (void)
-{
- int num_to_alloc;
-
- if (!(yy_buffer_stack)) {
-
- /* First allocation is just for 2 elements, since we don't know if this
- * scanner will even need a stack. We use 2 instead of 1 to avoid an
- * immediate realloc on the next call.
- */
- num_to_alloc = 1;
- (yy_buffer_stack) = (struct yy_buffer_state**)yyalloc
- (num_to_alloc * sizeof(struct yy_buffer_state*)
- );
-
- memset((yy_buffer_stack), 0, num_to_alloc * sizeof(struct yy_buffer_state*));
-
- (yy_buffer_stack_max) = num_to_alloc;
- (yy_buffer_stack_top) = 0;
- return;
- }
-
- if ((yy_buffer_stack_top) >= ((yy_buffer_stack_max)) - 1){
-
- /* Increase the buffer to prepare for a possible push. */
- int grow_size = 8 /* arbitrary grow size */;
-
- num_to_alloc = (yy_buffer_stack_max) + grow_size;
- (yy_buffer_stack) = (struct yy_buffer_state**)yyrealloc
- ((yy_buffer_stack),
- num_to_alloc * sizeof(struct yy_buffer_state*)
- );
-
- /* zero only the new slots.*/
- memset((yy_buffer_stack) + (yy_buffer_stack_max), 0, grow_size * sizeof(struct yy_buffer_state*));
- (yy_buffer_stack_max) = num_to_alloc;
- }
-}
-
-/** Setup the input buffer state to scan directly from a user-specified character buffer.
- * @param base the character buffer
- * @param size the size in bytes of the character buffer
- *
- * @return the newly allocated buffer state object.
- */
-YY_BUFFER_STATE yy_scan_buffer (char * base, yy_size_t size )
-{
- YY_BUFFER_STATE b;
-
- if ( size < 2 ||
- base[size-2] != YY_END_OF_BUFFER_CHAR ||
- base[size-1] != YY_END_OF_BUFFER_CHAR )
- /* They forgot to leave room for the EOB's. */
- return 0;
-
- b = (YY_BUFFER_STATE) yyalloc(sizeof( struct yy_buffer_state ) );
- if ( ! b )
- YY_FATAL_ERROR( "out of dynamic memory in yy_scan_buffer()" );
-
- b->yy_buf_size = size - 2; /* "- 2" to take care of EOB's */
- b->yy_buf_pos = b->yy_ch_buf = base;
- b->yy_is_our_buffer = 0;
- b->yy_input_file = 0;
- b->yy_n_chars = b->yy_buf_size;
- b->yy_is_interactive = 0;
- b->yy_at_bol = 1;
- b->yy_fill_buffer = 0;
- b->yy_buffer_status = YY_BUFFER_NEW;
-
- yy_switch_to_buffer(b );
-
- return b;
-}
-
-/** Setup the input buffer state to scan a string. The next call to yylex() will
- * scan from a @e copy of @a str.
- * @param str a NUL-terminated string to scan
- *
- * @return the newly allocated buffer state object.
- * @note If you want to scan bytes that may contain NUL values, then use
- * yy_scan_bytes() instead.
- */
-YY_BUFFER_STATE yy_scan_string (yyconst char * yy_str )
-{
-
- return yy_scan_bytes(yy_str,strlen(yy_str) );
-}
-
-/** Setup the input buffer state to scan the given bytes. The next call to yylex() will
- * scan from a @e copy of @a bytes.
- * @param bytes the byte buffer to scan
- * @param len the number of bytes in the buffer pointed to by @a bytes.
- *
- * @return the newly allocated buffer state object.
- */
-YY_BUFFER_STATE yy_scan_bytes (yyconst char * bytes, int len )
-{
- YY_BUFFER_STATE b;
- char *buf;
- yy_size_t n;
- int i;
-
- /* Get memory for full buffer, including space for trailing EOB's. */
- n = len + 2;
- buf = (char *) yyalloc(n );
- if ( ! buf )
- YY_FATAL_ERROR( "out of dynamic memory in yy_scan_bytes()" );
-
- for ( i = 0; i < len; ++i )
- buf[i] = bytes[i];
-
- buf[len] = buf[len+1] = YY_END_OF_BUFFER_CHAR;
-
- b = yy_scan_buffer(buf,n );
- if ( ! b )
- YY_FATAL_ERROR( "bad buffer in yy_scan_bytes()" );
-
- /* It's okay to grow etc. this buffer, and we should throw it
- * away when we're done.
- */
- b->yy_is_our_buffer = 1;
-
- return b;
-}
-
-#ifndef YY_EXIT_FAILURE
-#define YY_EXIT_FAILURE 2
-#endif
-
-static void yy_fatal_error (yyconst char* msg )
-{
- (void) fprintf( stderr, "%s\n", msg );
- exit( YY_EXIT_FAILURE );
-}
-
-/* Redefine yyless() so it works in section 3 code. */
-
-#undef yyless
-#define yyless(n) \
- do \
- { \
- /* Undo effects of setting up yytext. */ \
- int yyless_macro_arg = (n); \
- YY_LESS_LINENO(yyless_macro_arg);\
- yytext[yyleng] = (yy_hold_char); \
- (yy_c_buf_p) = yytext + yyless_macro_arg; \
- (yy_hold_char) = *(yy_c_buf_p); \
- *(yy_c_buf_p) = '\0'; \
- yyleng = yyless_macro_arg; \
- } \
- while ( 0 )
-
-/* Accessor methods (get/set functions) to struct members. */
-
-/** Get the current line number.
- *
- */
-int yyget_lineno (void)
-{
-
- return yylineno;
-}
-
-/** Get the input stream.
- *
- */
-FILE *yyget_in (void)
-{
- return yyin;
-}
-
-/** Get the output stream.
- *
- */
-FILE *yyget_out (void)
-{
- return yyout;
-}
-
-/** Get the length of the current token.
- *
- */
-int yyget_leng (void)
-{
- return yyleng;
-}
-
-/** Get the current token.
- *
- */
-
-char *yyget_text (void)
-{
- return yytext;
-}
-
-/** Set the current line number.
- * @param line_number
- *
- */
-void yyset_lineno (int line_number )
-{
-
- yylineno = line_number;
-}
-
-/** Set the input stream. This does not discard the current
- * input buffer.
- * @param in_str A readable stream.
- *
- * @see yy_switch_to_buffer
- */
-void yyset_in (FILE * in_str )
-{
- yyin = in_str ;
-}
-
-void yyset_out (FILE * out_str )
-{
- yyout = out_str ;
-}
-
-int yyget_debug (void)
-{
- return yy_flex_debug;
-}
-
-void yyset_debug (int bdebug )
-{
- yy_flex_debug = bdebug ;
-}
-
-/* yylex_destroy is for both reentrant and non-reentrant scanners. */
-int yylex_destroy (void)
-{
-
- /* Pop the buffer stack, destroying each element. */
- while(YY_CURRENT_BUFFER){
- yy_delete_buffer(YY_CURRENT_BUFFER );
- YY_CURRENT_BUFFER_LVALUE = NULL;
- yypop_buffer_state();
- }
-
- /* Destroy the stack itself. */
- yyfree((yy_buffer_stack) );
- (yy_buffer_stack) = NULL;
-
- return 0;
-}
-
-/*
- * Internal utility routines.
- */
-
-#ifndef yytext_ptr
-static void yy_flex_strncpy (char* s1, yyconst char * s2, int n )
-{
- register int i;
- for ( i = 0; i < n; ++i )
- s1[i] = s2[i];
-}
-#endif
-
-#ifdef YY_NEED_STRLEN
-static int yy_flex_strlen (yyconst char * s )
-{
- register int n;
- for ( n = 0; s[n]; ++n )
- ;
-
- return n;
-}
-#endif
-
-void *yyalloc (yy_size_t size )
-{
- return (void *) malloc( size );
-}
-
-void *yyrealloc (void * ptr, yy_size_t size )
-{
- /* The cast to (char *) in the following accommodates both
- * implementations that use char* generic pointers, and those
- * that use void* generic pointers. It works with the latter
- * because both ANSI C and C++ allow castless assignment from
- * any pointer type to void*, and deal with argument conversions
- * as though doing an assignment.
- */
- return (void *) realloc( (char *) ptr, size );
-}
-
-void yyfree (void * ptr )
-{
- free( (char *) ptr ); /* see yyrealloc() for (char *) cast */
-}
-
-#define YYTABLES_NAME "yytables"
-
-#undef YY_NEW_FILE
-#undef YY_FLUSH_BUFFER
-#undef yy_set_bol
-#undef yy_new_buffer
-#undef yy_set_interactive
-#undef yytext_ptr
-#undef YY_DO_BEFORE_ACTION
-
-#ifdef YY_DECL_IS_OURS
-#undef YY_DECL_IS_OURS
-#undef YY_DECL
-#endif
-#line 96 "arith_lex.l"
-
-
-
-void
-arith_lex_reset() {
-#ifdef YY_NEW_FILE
- YY_NEW_FILE;
-#endif
-}
-
diff --git a/sh/arith_lex.l b/sh/arith_lex.l
deleted file mode 100644
index 79116fc..0000000
--- a/sh/arith_lex.l
+++ /dev/null
@@ -1,103 +0,0 @@
-%{
-/* $NetBSD: arith_lex.l,v 1.12.6.1 2005/04/07 11:38:58 tron Exp $ */
-
-/*-
- * Copyright (c) 1993
- * The Regents of the University of California. All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Kenneth Almquist.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <sys/cdefs.h>
-#ifndef lint
-#if 0
-static char sccsid[] = "@(#)arith_lex.l 8.3 (Berkeley) 5/4/95";
-#else
-__RCSID("$NetBSD: arith_lex.l,v 1.12.6.1 2005/04/07 11:38:58 tron Exp $");
-#endif
-#endif /* not lint */
-
-#include <unistd.h>
-#include "arith.h"
-#include "error.h"
-#include "expand.h"
-#include "var.h"
-
-extern int yylval;
-extern char *arith_buf, *arith_startbuf;
-#undef YY_INPUT
-#define YY_INPUT(buf,result,max) \
- result = (*buf = *arith_buf++) ? 1 : YY_NULL;
-#define YY_NO_UNPUT
-%}
-%option noyywrap
-
-%%
-[ \t\n] { ; }
-0x[0-9a-fA-F]+ { yylval = strtol(yytext, 0, 0); return(ARITH_NUM); }
-0[0-7]* { yylval = strtol(yytext, 0, 0); return(ARITH_NUM); }
-[1-9][0-9]* { yylval = strtol(yytext, 0, 0); return(ARITH_NUM); }
-[A-Za-z_][A-Za-z_0-9]* { char *v = lookupvar(yytext);
- if (v) {
- yylval = strtol(v, &v, 0);
- if (*v == 0)
- return ARITH_NUM;
- }
- error("arith: syntax error: \"%s\"", arith_startbuf);
- }
-"(" { return(ARITH_LPAREN); }
-")" { return(ARITH_RPAREN); }
-"||" { return(ARITH_OR); }
-"&&" { return(ARITH_AND); }
-"|" { return(ARITH_BOR); }
-"^" { return(ARITH_BXOR); }
-"&" { return(ARITH_BAND); }
-"==" { return(ARITH_EQ); }
-"!=" { return(ARITH_NE); }
-">" { return(ARITH_GT); }
-">=" { return(ARITH_GE); }
-"<" { return(ARITH_LT); }
-"<=" { return(ARITH_LE); }
-"<<" { return(ARITH_LSHIFT); }
-">>" { return(ARITH_RSHIFT); }
-"*" { return(ARITH_MUL); }
-"/" { return(ARITH_DIV); }
-"%" { return(ARITH_REM); }
-"+" { return(ARITH_ADD); }
-"-" { return(ARITH_SUB); }
-"~" { return(ARITH_BNOT); }
-"!" { return(ARITH_NOT); }
-. { error("arith: syntax error: \"%s\"", arith_startbuf); }
-%%
-
-void
-arith_lex_reset() {
-#ifdef YY_NEW_FILE
- YY_NEW_FILE;
-#endif
-}
diff --git a/sh/bltin/bltin.h b/sh/bltin/bltin.h
deleted file mode 100644
index b8f9d75..0000000
--- a/sh/bltin/bltin.h
+++ /dev/null
@@ -1,94 +0,0 @@
-/* $NetBSD: bltin.h,v 1.11 2003/08/07 09:05:40 agc Exp $ */
-
-/*-
- * Copyright (c) 1991, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Kenneth Almquist.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * @(#)bltin.h 8.1 (Berkeley) 5/31/93
- */
-
-/*
- * This file is included by programs which are optionally built into the
- * shell. If SHELL is defined, we try to map the standard UNIX library
- * routines to ash routines using defines.
- */
-
-#include "../shell.h"
-#include "../mystring.h"
-#ifdef SHELL
-#include "../output.h"
-#include "../error.h"
-#undef stdout
-#undef stderr
-#undef putc
-#undef putchar
-#undef fileno
-#define stdout out1
-#define stderr out2
-#define printf out1fmt
-#define putc(c, file) outc(c, file)
-#define putchar(c) out1c(c)
-#define FILE struct output
-#define fprintf outfmt
-#define fputs outstr
-#define fflush flushout
-#define fileno(f) ((f)->fd)
-#define INITARGS(argv)
-#define err sh_err
-#define verr sh_verr
-#define errx sh_errx
-#define verrx sh_verrx
-#define warn sh_warn
-#define vwarn sh_vwarn
-#define warnx sh_warnx
-#define vwarnx sh_vwarnx
-#define exit sh_exit
-#define setprogname(s)
-#define getprogname() commandname
-#define setlocate(l,s) 0
-
-#define getenv(p) bltinlookup((p),0)
-
-#else
-#undef NULL
-#include <stdio.h>
-#undef main
-#define INITARGS(argv) if ((commandname = argv[0]) == NULL) {fputs("Argc is zero\n", stderr); exit(2);} else
-#endif
-
-pointer stalloc(int);
-void error(const char *, ...);
-void sh_warnx(const char *, ...);
-void sh_exit(int) __attribute__((__noreturn__));
-
-int echocmd(int, char **);
-
-
-extern const char *commandname;
diff --git a/sh/bltin/echo.1 b/sh/bltin/echo.1
deleted file mode 100644
index 7e71fa3..0000000
--- a/sh/bltin/echo.1
+++ /dev/null
@@ -1,109 +0,0 @@
-.\" $NetBSD: echo.1,v 1.13 2003/08/07 09:05:40 agc Exp $
-.\"
-.\" Copyright (c) 1991, 1993
-.\" The Regents of the University of California. All rights reserved.
-.\"
-.\" This code is derived from software contributed to Berkeley by
-.\" Kenneth Almquist.
-.\" Copyright 1989 by Kenneth Almquist
-.\"
-.\" Redistribution and use in source and binary forms, with or without
-.\" modification, are permitted provided that the following conditions
-.\" are met:
-.\" 1. Redistributions of source code must retain the above copyright
-.\" notice, this list of conditions and the following disclaimer.
-.\" 2. Redistributions in binary form must reproduce the above copyright
-.\" notice, this list of conditions and the following disclaimer in the
-.\" documentation and/or other materials provided with the distribution.
-.\" 3. Neither the name of the University nor the names of its contributors
-.\" may be used to endorse or promote products derived from this software
-.\" without specific prior written permission.
-.\"
-.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
-.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
-.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
-.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
-.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
-.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
-.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
-.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
-.\" SUCH DAMAGE.
-.\"
-.\" @(#)echo.1 8.1 (Berkeley) 5/31/93
-.\"
-.Dd May 31, 1993
-.Dt ECHO 1
-.Os
-.Sh NAME
-.Nm echo
-.Nd produce message in a shell script
-.Sh SYNOPSIS
-.Nm
-.Op Fl n | Fl e
-.Ar args ...
-.Sh DESCRIPTION
-.Nm
-prints its arguments on the standard output, separated by spaces.
-Unless the
-.Fl n
-option is present, a newline is output following the arguments.
-The
-.Fl e
-option causes
-.Nm
-to treat the escape sequences specially, as described in the following
-paragraph.
-The
-.Fl e
-option is the default, and is provided solely for compatibility with
-other systems.
-Only one of the options
-.Fl n
-and
-.Fl e
-may be given.
-.Pp
-If any of the following sequences of characters is encountered during
-output, the sequence is not output. Instead, the specified action is
-performed:
-.Bl -tag -width indent
-.It Li \eb
-A backspace character is output.
-.It Li \ec
-Subsequent output is suppressed. This is normally used at the end of the
-last argument to suppress the trailing newline that
-.Nm
-would otherwise output.
-.It Li \ef
-Output a form feed.
-.It Li \en
-Output a newline character.
-.It Li \er
-Output a carriage return.
-.It Li \et
-Output a (horizontal) tab character.
-.It Li \ev
-Output a vertical tab.
-.It Li \e0 Ns Ar digits
-Output the character whose value is given by zero to three digits.
-If there are zero digits, a nul character is output.
-.It Li \e\e
-Output a backslash.
-.El
-.Sh HINTS
-Remember that backslash is special to the shell and needs to be escaped.
-To output a message to standard error, say
-.Pp
-.D1 echo message \*[Gt]\*[Am]2
-.Sh BUGS
-The octal character escape mechanism
-.Pq Li \e0 Ns Ar digits
-differs from the
-C language mechanism.
-.Pp
-There is no way to force
-.Nm
-to treat its arguments literally, rather than interpreting them as
-options and escape sequences.
diff --git a/sh/bltin/echo.c b/sh/bltin/echo.c
deleted file mode 100644
index bed7535..0000000
--- a/sh/bltin/echo.c
+++ /dev/null
@@ -1,116 +0,0 @@
-/* $NetBSD: echo.c,v 1.12 2005/02/06 04:43:43 perry Exp $ */
-
-/*-
- * Copyright (c) 1991, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Kenneth Almquist.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * @(#)echo.c 8.1 (Berkeley) 5/31/93
- */
-
-/*
- * Echo command.
- *
- * echo is steeped in tradition - several of them!
- * netbsd has supported 'echo [-n | -e] args' in spite of -e not being
- * documented anywhere.
- * Posix requires that -n be supported, output from strings containing
- * \ is implementation defined
- * The Single Unix Spec requires that \ escapes be treated as if -e
- * were set, but that -n not be treated as an option.
- * (ksh supports 'echo [-eEn] args', but not -- so that it is actually
- * impossible to actually output '-n')
- *
- * It is suggested that 'printf "%b" "string"' be used to get \ sequences
- * expanded. printf is now a builtin of netbsd's sh and csh.
- */
-
-//#define main echocmd
-
-#include "bltin.h"
-
-int
-echocmd(int argc, char **argv)
-{
- char **ap;
- char *p;
- char c;
- int count;
- int nflag = 0;
- int eflag = 0;
-
- ap = argv;
- if (argc)
- ap++;
-
- if ((p = *ap) != NULL) {
- if (equal(p, "-n")) {
- nflag = 1;
- ap++;
- } else if (equal(p, "-e")) {
- eflag = 1;
- ap++;
- }
- }
-
- while ((p = *ap++) != NULL) {
- while ((c = *p++) != '\0') {
- if (c == '\\' && eflag) {
- switch (*p++) {
- case 'a': c = '\a'; break; /* bell */
- case 'b': c = '\b'; break;
- case 'c': return 0; /* exit */
- case 'e': c = 033; break; /* escape */
- case 'f': c = '\f'; break;
- case 'n': c = '\n'; break;
- case 'r': c = '\r'; break;
- case 't': c = '\t'; break;
- case 'v': c = '\v'; break;
- case '\\': break; /* c = '\\' */
- case '0':
- c = 0;
- count = 3;
- while (--count >= 0 && (unsigned)(*p - '0') < 8)
- c = (c << 3) + (*p++ - '0');
- break;
- default:
- /* Output the '/' and char following */
- p--;
- break;
- }
- }
- putchar(c);
- }
- if (*ap)
- putchar(' ');
- }
- if (! nflag)
- putchar('\n');
- return 0;
-}
diff --git a/sh/builtins.c b/sh/builtins.c
deleted file mode 100644
index 344dbd6..0000000
--- a/sh/builtins.c
+++ /dev/null
@@ -1,61 +0,0 @@
-/*
- * This file was generated by the mkbuiltins program.
- */
-
-#include "shell.h"
-#include "builtins.h"
-
-const struct builtincmd builtincmd[] = {
-
- { "command", bltincmd },
- { "bg", bgcmd },
- { "cd", cdcmd },
- { "chdir", cdcmd },
- { "echo", echocmd },
- { "exp", expcmd },
- { "let", expcmd },
- { "false", falsecmd },
-#if WITH_HISTORY
- { "fc", histcmd },
- { "inputrc", inputrc },
-#endif
- { "fg", fgcmd },
- { "getopts", getoptscmd },
- { "hash", hashcmd },
- { "jobid", jobidcmd },
- { "jobs", jobscmd },
- { "local", localcmd },
-#ifndef SMALL
-#endif
- { "pwd", pwdcmd },
- { "read", readcmd },
- { "setvar", setvarcmd },
- { "true", truecmd },
- { "type", typecmd },
- { "umask", umaskcmd },
- { "unalias", unaliascmd },
- { "wait", waitcmd },
- { "alias", aliascmd },
- { "ulimit", ulimitcmd },
- { "wordexp", wordexpcmd },
- { 0, 0 },
-};
-
-const struct builtincmd splbltincmd[] = {
- { "break", breakcmd },
- { "continue", breakcmd },
- { ".", dotcmd },
- { "eval", evalcmd },
- { "exec", execcmd },
- { "exit", exitcmd },
- { "export", exportcmd },
- { "readonly", exportcmd },
- { "return", returncmd },
- { "set", setcmd },
- { "shift", shiftcmd },
- { "times", timescmd },
- { "trap", trapcmd },
- { ":", truecmd },
- { "unset", unsetcmd },
- { 0, 0 },
-};
diff --git a/sh/builtins.def b/sh/builtins.def
deleted file mode 100644
index 18e56c6..0000000
--- a/sh/builtins.def
+++ /dev/null
@@ -1,94 +0,0 @@
-#!/bin/sh -
-# $NetBSD: builtins.def,v 1.21 2004/07/13 15:05:59 seb Exp $
-#
-# Copyright (c) 1991, 1993
-# The Regents of the University of California. All rights reserved.
-#
-# This code is derived from software contributed to Berkeley by
-# Kenneth Almquist.
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions
-# are met:
-# 1. Redistributions of source code must retain the above copyright
-# notice, this list of conditions and the following disclaimer.
-# 2. Redistributions in binary form must reproduce the above copyright
-# notice, this list of conditions and the following disclaimer in the
-# documentation and/or other materials provided with the distribution.
-# 3. Neither the name of the University nor the names of its contributors
-# may be used to endorse or promote products derived from this software
-# without specific prior written permission.
-#
-# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
-# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
-# ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
-# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
-# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
-# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
-# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
-# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
-# SUCH DAMAGE.
-#
-# @(#)builtins.def 8.4 (Berkeley) 5/4/95
-
-#
-# This file lists all the builtin commands. The first column is the name
-# of a C routine.
-# The -j flag specifies that this command is to be excluded from systems
-# without job control.
-# The -h flag specifies that this command is to be excluded from systems
-# based on the SMALL compile-time symbol.
-# The -s flag specifies that this is a posix 'special builtin' command.
-# The -u flag specifies that this is a posix 'standard utility'.
-# The rest of the line specifies the command name or names used to run
-# the command.
-
-bltincmd -u command
-bgcmd -j -u bg
-breakcmd -s break -s continue
-cdcmd -u cd chdir
-dotcmd -s .
-echocmd echo
-evalcmd -s eval
-execcmd -s exec
-exitcmd -s exit
-expcmd exp let
-exportcmd -s export -s readonly
-falsecmd -u false
-#if WITH_HISTORY
-histcmd -h -u fc
-inputrc inputrc
-#endif
-fgcmd -j -u fg
-getoptscmd -u getopts
-hashcmd hash
-jobidcmd jobid
-jobscmd -u jobs
-localcmd local
-#ifndef SMALL
-##printfcmd printf
-#endif
-pwdcmd -u pwd
-readcmd -u read
-returncmd -s return
-setcmd -s set
-setvarcmd setvar
-shiftcmd -s shift
-timescmd -s times
-trapcmd -s trap
-truecmd -s : -u true
-typecmd type
-umaskcmd -u umask
-unaliascmd -u unalias
-unsetcmd -s unset
-waitcmd -u wait
-aliascmd -u alias
-ulimitcmd ulimit
-##testcmd test [
-##killcmd -u kill # mandated by posix for 'kill %job'
-wordexpcmd wordexp
-#newgrp -u newgrp # optional command in posix
-
-#exprcmd expr
diff --git a/sh/builtins.h b/sh/builtins.h
deleted file mode 100644
index 1f9e45a..0000000
--- a/sh/builtins.h
+++ /dev/null
@@ -1,56 +0,0 @@
-/*
- * This file was generated by the mkbuiltins program.
- */
-
-#include <sys/cdefs.h>
-
-struct builtincmd {
- const char *name;
- int (*builtin)(int, char **);
-};
-
-extern const struct builtincmd builtincmd[];
-extern const struct builtincmd splbltincmd[];
-
-
-int bltincmd(int, char **);
-int bgcmd(int, char **);
-int breakcmd(int, char **);
-int cdcmd(int, char **);
-int dotcmd(int, char **);
-int echocmd(int, char **);
-int evalcmd(int, char **);
-int execcmd(int, char **);
-int exitcmd(int, char **);
-int expcmd(int, char **);
-int exportcmd(int, char **);
-int falsecmd(int, char **);
-#if WITH_HISTORY
-int histcmd(int, char **);
-int inputrc(int, char **);
-#endif
-int fgcmd(int, char **);
-int getoptscmd(int, char **);
-int hashcmd(int, char **);
-int jobidcmd(int, char **);
-int jobscmd(int, char **);
-int localcmd(int, char **);
-#ifndef SMALL
-#endif
-int pwdcmd(int, char **);
-int readcmd(int, char **);
-int returncmd(int, char **);
-int setcmd(int, char **);
-int setvarcmd(int, char **);
-int shiftcmd(int, char **);
-int timescmd(int, char **);
-int trapcmd(int, char **);
-int truecmd(int, char **);
-int typecmd(int, char **);
-int umaskcmd(int, char **);
-int unaliascmd(int, char **);
-int unsetcmd(int, char **);
-int waitcmd(int, char **);
-int aliascmd(int, char **);
-int ulimitcmd(int, char **);
-int wordexpcmd(int, char **);
diff --git a/sh/cd.c b/sh/cd.c
deleted file mode 100644
index 4ab599b..0000000
--- a/sh/cd.c
+++ /dev/null
@@ -1,446 +0,0 @@
-/* $NetBSD: cd.c,v 1.34 2003/11/14 20:00:28 dsl Exp $ */
-
-/*-
- * Copyright (c) 1991, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Kenneth Almquist.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <sys/cdefs.h>
-#ifndef lint
-#if 0
-static char sccsid[] = "@(#)cd.c 8.2 (Berkeley) 5/4/95";
-#else
-__RCSID("$NetBSD: cd.c,v 1.34 2003/11/14 20:00:28 dsl Exp $");
-#endif
-#endif /* not lint */
-
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-#include <errno.h>
-
-/*
- * The cd and pwd commands.
- */
-
-#include "shell.h"
-#include "var.h"
-#include "nodes.h" /* for jobs.h */
-#include "jobs.h"
-#include "options.h"
-#include "output.h"
-#include "memalloc.h"
-#include "error.h"
-#include "exec.h"
-#include "redir.h"
-#include "mystring.h"
-#include "show.h"
-#include "cd.h"
-
-STATIC int docd(char *, int);
-STATIC char *getcomponent(void);
-STATIC void updatepwd(char *);
-STATIC void find_curdir(int noerror);
-
-char *curdir = NULL; /* current working directory */
-char *prevdir; /* previous working directory */
-STATIC char *cdcomppath;
-
-int
-cdcmd(int argc, char **argv)
-{
- const char *dest;
- const char *path;
- char *p, *d;
- struct stat statb;
- int print = cdprint; /* set -cdprint to enable */
-
- nextopt(nullstr);
-
- /*
- * Try (quite hard) to have 'curdir' defined, nothing has set
- * it on entry to the shell, but we want 'cd fred; cd -' to work.
- */
- getpwd(1);
- dest = *argptr;
- if (dest == NULL) {
- dest = bltinlookup("HOME", 1);
- if (dest == NULL)
- error("HOME not set");
- } else {
- if (argptr[1]) {
- /* Do 'ksh' style substitution */
- if (!curdir)
- error("PWD not set");
- p = strstr(curdir, dest);
- if (!p)
- error("bad substitution");
- d = stalloc(strlen(curdir) + strlen(argptr[1]) + 1);
- memcpy(d, curdir, p - curdir);
- strcpy(d + (p - curdir), argptr[1]);
- strcat(d, p + strlen(dest));
- dest = d;
- print = 1;
- }
- }
-
- if (dest[0] == '-' && dest[1] == '\0') {
- dest = prevdir ? prevdir : curdir;
- print = 1;
- }
- if (*dest == '\0')
- dest = ".";
- if (*dest == '/' || (path = bltinlookup("CDPATH", 1)) == NULL)
- path = nullstr;
- while ((p = padvance(&path, dest)) != NULL) {
- if (stat(p, &statb) >= 0 && S_ISDIR(statb.st_mode)) {
- if (!print) {
- /*
- * XXX - rethink
- */
- if (p[0] == '.' && p[1] == '/' && p[2] != '\0')
- p += 2;
- print = strcmp(p, dest);
- }
- if (docd(p, print) >= 0)
- return 0;
-
- }
- }
- error("can't cd to %s", dest);
- /* NOTREACHED */
-}
-
-
-/*
- * Actually do the chdir. In an interactive shell, print the
- * directory name if "print" is nonzero.
- */
-
-STATIC int
-docd(char *dest, int print)
-{
- char *p;
- char *q;
- char *component;
- struct stat statb;
- int first;
- int badstat;
-
- TRACE(("docd(\"%s\", %d) called\n", dest, print));
-
- /*
- * Check each component of the path. If we find a symlink or
- * something we can't stat, clear curdir to force a getcwd()
- * next time we get the value of the current directory.
- */
- badstat = 0;
- cdcomppath = stalloc(strlen(dest) + 1);
- scopy(dest, cdcomppath);
- STARTSTACKSTR(p);
- if (*dest == '/') {
- STPUTC('/', p);
- cdcomppath++;
- }
- first = 1;
- while ((q = getcomponent()) != NULL) {
- if (q[0] == '\0' || (q[0] == '.' && q[1] == '\0'))
- continue;
- if (! first)
- STPUTC('/', p);
- first = 0;
- component = q;
- while (*q)
- STPUTC(*q++, p);
- if (equal(component, ".."))
- continue;
- STACKSTRNUL(p);
- if ((lstat(stackblock(), &statb) < 0)
- || (S_ISLNK(statb.st_mode))) {
- /* print = 1; */
- badstat = 1;
- break;
- }
- }
-
- INTOFF;
- if (chdir(dest) < 0) {
- INTON;
- return -1;
- }
- updatepwd(badstat ? NULL : dest);
- INTON;
- if (print && iflag && curdir)
- out1fmt("%s\n", curdir);
- return 0;
-}
-
-
-/*
- * Get the next component of the path name pointed to by cdcomppath.
- * This routine overwrites the string pointed to by cdcomppath.
- */
-
-STATIC char *
-getcomponent()
-{
- char *p;
- char *start;
-
- if ((p = cdcomppath) == NULL)
- return NULL;
- start = cdcomppath;
- while (*p != '/' && *p != '\0')
- p++;
- if (*p == '\0') {
- cdcomppath = NULL;
- } else {
- *p++ = '\0';
- cdcomppath = p;
- }
- return start;
-}
-
-
-
-/*
- * Update curdir (the name of the current directory) in response to a
- * cd command. We also call hashcd to let the routines in exec.c know
- * that the current directory has changed.
- */
-
-STATIC void
-updatepwd(char *dir)
-{
- char *new;
- char *p;
-
- hashcd(); /* update command hash table */
-
- /*
- * If our argument is NULL, we don't know the current directory
- * any more because we traversed a symbolic link or something
- * we couldn't stat().
- */
- if (dir == NULL || curdir == NULL) {
- if (prevdir)
- ckfree(prevdir);
- INTOFF;
- prevdir = curdir;
- curdir = NULL;
- getpwd(1);
- INTON;
- if (curdir)
- setvar("PWD", curdir, VEXPORT);
- else
- unsetvar("PWD", 0);
- return;
- }
- cdcomppath = stalloc(strlen(dir) + 1);
- scopy(dir, cdcomppath);
- STARTSTACKSTR(new);
- if (*dir != '/') {
- p = curdir;
- while (*p)
- STPUTC(*p++, new);
- if (p[-1] == '/')
- STUNPUTC(new);
- }
- while ((p = getcomponent()) != NULL) {
- if (equal(p, "..")) {
- while (new > stackblock() && (STUNPUTC(new), *new) != '/');
- } else if (*p != '\0' && ! equal(p, ".")) {
- STPUTC('/', new);
- while (*p)
- STPUTC(*p++, new);
- }
- }
- if (new == stackblock())
- STPUTC('/', new);
- STACKSTRNUL(new);
- INTOFF;
- if (prevdir)
- ckfree(prevdir);
- prevdir = curdir;
- curdir = savestr(stackblock());
- setvar("PWD", curdir, VEXPORT);
- INTON;
-}
-
-/*
- * Posix says the default should be 'pwd -L' (as below), however
- * the 'cd' command (above) does something much nearer to the
- * posix 'cd -P' (not the posix default of 'cd -L').
- * If 'cd' is changed to support -P/L then the default here
- * needs to be revisited if the historic behaviour is to be kept.
- */
-
-int
-pwdcmd(int argc, char **argv)
-{
- int i;
- char opt = 'L';
-
- while ((i = nextopt("LP")) != '\0')
- opt = i;
- if (*argptr)
- error("unexpected argument");
-
- if (opt == 'L')
- getpwd(0);
- else
- find_curdir(0);
-
- setvar("PWD", curdir, VEXPORT);
- out1str(curdir);
- out1c('\n');
- return 0;
-}
-
-
-
-
-#define MAXPWD 256
-
-/*
- * Find out what the current directory is. If we already know the current
- * directory, this routine returns immediately.
- */
-void
-getpwd(int noerror)
-{
- char *pwd;
- struct stat stdot, stpwd;
- static int first = 1;
-
- if (curdir)
- return;
-
- if (first) {
- first = 0;
- pwd = getenv("PWD");
- if (pwd && *pwd == '/' && stat(".", &stdot) != -1 &&
- stat(pwd, &stpwd) != -1 &&
- stdot.st_dev == stpwd.st_dev &&
- stdot.st_ino == stpwd.st_ino) {
- curdir = savestr(pwd);
- return;
- }
- }
-
- find_curdir(noerror);
-
- return;
-}
-
-STATIC void
-find_curdir(int noerror)
-{
- int i;
- char *pwd;
-
- /*
- * Things are a bit complicated here; we could have just used
- * getcwd, but traditionally getcwd is implemented using popen
- * to /bin/pwd. This creates a problem for us, since we cannot
- * keep track of the job if it is being ran behind our backs.
- * So we re-implement getcwd(), and we suppress interrupts
- * throughout the process. This is not completely safe, since
- * the user can still break out of it by killing the pwd program.
- * We still try to use getcwd for systems that we know have a
- * c implementation of getcwd, that does not open a pipe to
- * /bin/pwd.
- */
-#if defined(__NetBSD__) || defined(__SVR4) || defined(__linux__)
- for (i = MAXPWD;; i *= 2) {
- pwd = stalloc(i);
- if (getcwd(pwd, i) != NULL) {
- curdir = savestr(pwd);
- return;
- }
- stunalloc(pwd);
- if (errno == ERANGE)
- continue;
- if (!noerror)
- error("getcwd() failed: %s", strerror(errno));
- return;
- }
-#else
- {
- char *p;
- int status;
- struct job *jp;
- int pip[2];
-
- pwd = stalloc(MAXPWD);
- INTOFF;
- if (pipe(pip) < 0)
- error("Pipe call failed");
- jp = makejob((union node *)NULL, 1);
- if (forkshell(jp, (union node *)NULL, FORK_NOJOB) == 0) {
- (void) close(pip[0]);
- if (pip[1] != 1) {
- close(1);
- copyfd(pip[1], 1);
- close(pip[1]);
- }
- (void) execl("/bin/pwd", "pwd", (char *)0);
- sh_warn("Cannot exec /bin/pwd");
- exit(1);
- }
- (void) close(pip[1]);
- pip[1] = -1;
- p = pwd;
- while ((i = read(pip[0], p, pwd + MAXPWD - p)) > 0
- || (i == -1 && errno == EINTR)) {
- if (i > 0)
- p += i;
- }
- (void) close(pip[0]);
- pip[0] = -1;
- status = waitforjob(jp);
- if (status != 0)
- error((char *)0);
- if (i < 0 || p == pwd || p[-1] != '\n') {
- if (noerror) {
- INTON;
- return;
- }
- error("pwd command failed");
- }
- p[-1] = '\0';
- INTON;
- curdir = savestr(pwd);
- return;
- }
-#endif
-}
diff --git a/sh/cd.h b/sh/cd.h
deleted file mode 100644
index a4dcc01..0000000
--- a/sh/cd.h
+++ /dev/null
@@ -1,35 +0,0 @@
-/* $NetBSD: cd.h,v 1.4 2003/08/07 09:05:30 agc Exp $ */
-
-/*-
- * Copyright (c) 1995
- * The Regents of the University of California. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- */
-
-void getpwd(int);
-int cdcmd(int, char **);
-int pwdcmd(int, char **);
diff --git a/sh/error.c b/sh/error.c
deleted file mode 100644
index 8cbed19..0000000
--- a/sh/error.c
+++ /dev/null
@@ -1,366 +0,0 @@
-/* $NetBSD: error.c,v 1.31 2003/08/07 09:05:30 agc Exp $ */
-
-/*-
- * Copyright (c) 1991, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Kenneth Almquist.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <sys/cdefs.h>
-#ifndef lint
-#if 0
-static char sccsid[] = "@(#)error.c 8.2 (Berkeley) 5/4/95";
-#else
-__RCSID("$NetBSD: error.c,v 1.31 2003/08/07 09:05:30 agc Exp $");
-#endif
-#endif /* not lint */
-
-/*
- * Errors and exceptions.
- */
-
-#include <signal.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <errno.h>
-#include <stdio.h>
-#include <string.h>
-
-#include "shell.h"
-#include "main.h"
-#include "options.h"
-#include "output.h"
-#include "error.h"
-#include "show.h"
-
-#define signal bsd_signal
-/*
- * Code to handle exceptions in C.
- */
-
-struct jmploc *handler;
-int exception;
-volatile int suppressint;
-volatile int intpending;
-char *commandname;
-
-
-static void exverror(int, const char *, va_list)
- __attribute__((__noreturn__));
-
-/*
- * Called to raise an exception. Since C doesn't include exceptions, we
- * just do a longjmp to the exception handler. The type of exception is
- * stored in the global variable "exception".
- */
-
-void
-exraise(int e)
-{
- if (handler == NULL)
- abort();
- exception = e;
- longjmp(handler->loc, 1);
-}
-
-
-/*
- * Called from trap.c when a SIGINT is received. (If the user specifies
- * that SIGINT is to be trapped or ignored using the trap builtin, then
- * this routine is not called.) Suppressint is nonzero when interrupts
- * are held using the INTOFF macro. The call to _exit is necessary because
- * there is a short period after a fork before the signal handlers are
- * set to the appropriate value for the child. (The test for iflag is
- * just defensive programming.)
- */
-
-void
-onint(void)
-{
- sigset_t nsigset;
-
- if (suppressint) {
- intpending = 1;
- return;
- }
- intpending = 0;
- sigemptyset(&nsigset);
- sigprocmask(SIG_SETMASK, &nsigset, NULL);
- if (rootshell && iflag)
- exraise(EXINT);
- else {
- signal(SIGINT, SIG_DFL);
- raise(SIGINT);
- }
- /* NOTREACHED */
-}
-
-static void
-exvwarning(int sv_errno, const char *msg, va_list ap)
-{
- /* Partially emulate line buffered output so that:
- * printf '%d\n' 1 a 2
- * and
- * printf '%d %d %d\n' 1 a 2
- * both generate sensible text when stdout and stderr are merged.
- */
- if (output.nextc != output.buf && output.nextc[-1] == '\n')
- flushout(&output);
- if (commandname)
- outfmt(&errout, "%s: ", commandname);
- if (msg != NULL) {
- doformat(&errout, msg, ap);
- if (sv_errno >= 0)
- outfmt(&errout, ": ");
- }
- if (sv_errno >= 0)
- outfmt(&errout, "%s", strerror(sv_errno));
- out2c('\n');
- flushout(&errout);
-}
-
-/*
- * Exverror is called to raise the error exception. If the second argument
- * is not NULL then error prints an error message using printf style
- * formatting. It then raises the error exception.
- */
-static void
-exverror(int cond, const char *msg, va_list ap)
-{
- CLEAR_PENDING_INT;
- INTOFF;
-
-#ifdef DEBUG
- if (msg) {
- TRACE(("exverror(%d, \"", cond));
- TRACEV((msg, ap));
- TRACE(("\") pid=%d\n", getpid()));
- } else
- TRACE(("exverror(%d, NULL) pid=%d\n", cond, getpid()));
-#endif
- if (msg)
- exvwarning(-1, msg, ap);
-
- flushall();
- exraise(cond);
- /* NOTREACHED */
-}
-
-
-void
-error(const char *msg, ...)
-{
- va_list ap;
-
- va_start(ap, msg);
- exverror(EXERROR, msg, ap);
- /* NOTREACHED */
- va_end(ap);
-}
-
-
-void
-exerror(int cond, const char *msg, ...)
-{
- va_list ap;
-
- va_start(ap, msg);
- exverror(cond, msg, ap);
- /* NOTREACHED */
- va_end(ap);
-}
-
-/*
- * error/warning routines for external builtins
- */
-
-void
-sh_exit(int rval)
-{
- exerrno = rval & 255;
- exraise(EXEXEC);
-}
-
-void
-sh_err(int status, const char *fmt, ...)
-{
- va_list ap;
-
- va_start(ap, fmt);
- exvwarning(errno, fmt, ap);
- va_end(ap);
- sh_exit(status);
-}
-
-void
-sh_verr(int status, const char *fmt, va_list ap)
-{
- exvwarning(errno, fmt, ap);
- sh_exit(status);
-}
-
-void
-sh_errx(int status, const char *fmt, ...)
-{
- va_list ap;
-
- va_start(ap, fmt);
- exvwarning(-1, fmt, ap);
- va_end(ap);
- sh_exit(status);
-}
-
-void
-sh_verrx(int status, const char *fmt, va_list ap)
-{
- exvwarning(-1, fmt, ap);
- sh_exit(status);
-}
-
-void
-sh_warn(const char *fmt, ...)
-{
- va_list ap;
-
- va_start(ap, fmt);
- exvwarning(errno, fmt, ap);
- va_end(ap);
-}
-
-void
-sh_vwarn(const char *fmt, va_list ap)
-{
- exvwarning(errno, fmt, ap);
-}
-
-void
-sh_warnx(const char *fmt, ...)
-{
- va_list ap;
-
- va_start(ap, fmt);
- exvwarning(-1, fmt, ap);
- va_end(ap);
-}
-
-void
-sh_vwarnx(const char *fmt, va_list ap)
-{
- exvwarning(-1, fmt, ap);
-}
-
-
-/*
- * Table of error messages.
- */
-
-struct errname {
- short errcode; /* error number */
- short action; /* operation which encountered the error */
- const char *msg; /* text describing the error */
-};
-
-
-#define ALL (E_OPEN|E_CREAT|E_EXEC)
-
-STATIC const struct errname errormsg[] = {
- { EINTR, ALL, "interrupted" },
- { EACCES, ALL, "permission denied" },
- { EIO, ALL, "I/O error" },
- { EEXIST, ALL, "file exists" },
- { ENOENT, E_OPEN, "no such file" },
- { ENOENT, E_CREAT,"directory nonexistent" },
- { ENOENT, E_EXEC, "not found" },
- { ENOTDIR, E_OPEN, "no such file" },
- { ENOTDIR, E_CREAT,"directory nonexistent" },
- { ENOTDIR, E_EXEC, "not found" },
- { EISDIR, ALL, "is a directory" },
-#ifdef EMFILE
- { EMFILE, ALL, "too many open files" },
-#endif
- { ENFILE, ALL, "file table overflow" },
- { ENOSPC, ALL, "file system full" },
-#ifdef EDQUOT
- { EDQUOT, ALL, "disk quota exceeded" },
-#endif
-#ifdef ENOSR
- { ENOSR, ALL, "no streams resources" },
-#endif
- { ENXIO, ALL, "no such device or address" },
- { EROFS, ALL, "read-only file system" },
- { ETXTBSY, ALL, "text busy" },
-#ifdef EAGAIN
- { EAGAIN, E_EXEC, "not enough memory" },
-#endif
- { ENOMEM, ALL, "not enough memory" },
-#ifdef ENOLINK
- { ENOLINK, ALL, "remote access failed" },
-#endif
-#ifdef EMULTIHOP
- { EMULTIHOP, ALL, "remote access failed" },
-#endif
-#ifdef ECOMM
- { ECOMM, ALL, "remote access failed" },
-#endif
-#ifdef ESTALE
- { ESTALE, ALL, "remote access failed" },
-#endif
-#ifdef ETIMEDOUT
- { ETIMEDOUT, ALL, "remote access failed" },
-#endif
-#ifdef ELOOP
- { ELOOP, ALL, "symbolic link loop" },
-#endif
- { E2BIG, E_EXEC, "argument list too long" },
-#ifdef ELIBACC
- { ELIBACC, E_EXEC, "shared library missing" },
-#endif
- { 0, 0, NULL },
-};
-
-
-/*
- * Return a string describing an error. The returned string may be a
- * pointer to a static buffer that will be overwritten on the next call.
- * Action describes the operation that got the error.
- */
-
-const char *
-errmsg(int e, int action)
-{
- struct errname const *ep;
- static char buf[12];
-
- for (ep = errormsg ; ep->errcode ; ep++) {
- if (ep->errcode == e && (ep->action & action) != 0)
- return ep->msg;
- }
- fmtstr(buf, sizeof buf, "error %d", e);
- return buf;
-}
diff --git a/sh/error.h b/sh/error.h
deleted file mode 100644
index 8e70ca4..0000000
--- a/sh/error.h
+++ /dev/null
@@ -1,117 +0,0 @@
-/* $NetBSD: error.h,v 1.16 2003/08/07 09:05:30 agc Exp $ */
-
-/*-
- * Copyright (c) 1991, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Kenneth Almquist.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * @(#)error.h 8.2 (Berkeley) 5/4/95
- */
-
-#include <stdarg.h>
-
-/*
- * Types of operations (passed to the errmsg routine).
- */
-
-#define E_OPEN 01 /* opening a file */
-#define E_CREAT 02 /* creating a file */
-#define E_EXEC 04 /* executing a program */
-
-
-/*
- * We enclose jmp_buf in a structure so that we can declare pointers to
- * jump locations. The global variable handler contains the location to
- * jump to when an exception occurs, and the global variable exception
- * contains a code identifying the exeception. To implement nested
- * exception handlers, the user should save the value of handler on entry
- * to an inner scope, set handler to point to a jmploc structure for the
- * inner scope, and restore handler on exit from the scope.
- */
-
-#include <setjmp.h>
-
-struct jmploc {
- jmp_buf loc;
-};
-
-extern struct jmploc *handler;
-extern int exception;
-extern int exerrno; /* error for EXEXEC */
-
-/* exceptions */
-#define EXINT 0 /* SIGINT received */
-#define EXERROR 1 /* a generic error */
-#define EXSHELLPROC 2 /* execute a shell procedure */
-#define EXEXEC 3 /* command execution failed */
-
-
-/*
- * These macros allow the user to suspend the handling of interrupt signals
- * over a period of time. This is similar to SIGHOLD to or sigblock, but
- * much more efficient and portable. (But hacking the kernel is so much
- * more fun than worrying about efficiency and portability. :-))
- */
-
-extern volatile int suppressint;
-extern volatile int intpending;
-
-#define INTOFF suppressint++
-#define INTON { if (--suppressint == 0 && intpending) onint(); }
-#define FORCEINTON {suppressint = 0; if (intpending) onint();}
-#define CLEAR_PENDING_INT intpending = 0
-#define int_pending() intpending
-
-void exraise(int) __attribute__((__noreturn__));
-void onint(void);
-void error(const char *, ...) __attribute__((__noreturn__));
-void exerror(int, const char *, ...) __attribute__((__noreturn__));
-const char *errmsg(int, int);
-
-void sh_err(int, const char *, ...) __attribute__((__noreturn__));
-void sh_verr(int, const char *, va_list) __attribute__((__noreturn__));
-void sh_errx(int, const char *, ...) __attribute__((__noreturn__));
-void sh_verrx(int, const char *, va_list) __attribute__((__noreturn__));
-void sh_warn(const char *, ...);
-void sh_vwarn(const char *, va_list);
-void sh_warnx(const char *, ...);
-void sh_vwarnx(const char *, va_list);
-
-void sh_exit(int) __attribute__((__noreturn__));
-
-
-/*
- * BSD setjmp saves the signal mask, which violates ANSI C and takes time,
- * so we use _setjmp instead.
- */
-
-#if defined(BSD) && !defined(__SVR4) && !defined(__linux__)
-#define setjmp(jmploc) _setjmp(jmploc)
-#define longjmp(jmploc, val) _longjmp(jmploc, val)
-#endif
diff --git a/sh/eval.c b/sh/eval.c
deleted file mode 100644
index 4eb7ded..0000000
--- a/sh/eval.c
+++ /dev/null
@@ -1,1257 +0,0 @@
-/* $NetBSD: eval.c,v 1.81.2.1 2005/06/13 22:03:51 tron Exp $ */
-
-/*-
- * Copyright (c) 1993
- * The Regents of the University of California. All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Kenneth Almquist.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <sys/cdefs.h>
-#ifndef lint
-#if 0
-static char sccsid[] = "@(#)eval.c 8.9 (Berkeley) 6/8/95";
-#else
-__RCSID("$NetBSD: eval.c,v 1.81.2.1 2005/06/13 22:03:51 tron Exp $");
-#endif
-#endif /* not lint */
-
-#include <stdlib.h>
-#include <signal.h>
-#include <stdio.h>
-#include <unistd.h>
-#ifdef __linux__
-#include <fcntl.h>
-#else
-#include <sys/fcntl.h>
-#endif
-#include <sys/times.h>
-#include <sys/param.h>
-#include <sys/types.h>
-#include <sys/wait.h>
-
-/*
- * Evaluate a command.
- */
-
-#include "shell.h"
-#include "nodes.h"
-#include "syntax.h"
-#include "expand.h"
-#include "parser.h"
-#include "jobs.h"
-#include "eval.h"
-#include "builtins.h"
-#include "options.h"
-#include "exec.h"
-#include "redir.h"
-#include "input.h"
-#include "output.h"
-#include "trap.h"
-#include "var.h"
-#include "memalloc.h"
-#include "error.h"
-#include "show.h"
-#include "mystring.h"
-#include "main.h"
-#ifndef SMALL
-#include "myhistedit.h"
-#endif
-
-
-/* flags in argument to evaltree */
-#define EV_EXIT 01 /* exit after evaluating tree */
-#define EV_TESTED 02 /* exit status is checked; ignore -e flag */
-#define EV_BACKCMD 04 /* command executing within back quotes */
-
-int evalskip; /* set if we are skipping commands */
-STATIC int skipcount; /* number of levels to skip */
-MKINIT int loopnest; /* current loop nesting level */
-int funcnest; /* depth of function calls */
-
-
-char *commandname;
-struct strlist *cmdenviron;
-int exitstatus; /* exit status of last command */
-int back_exitstatus; /* exit status of backquoted command */
-
-
-STATIC void evalloop(union node *, int);
-STATIC void evalfor(union node *, int);
-STATIC void evalcase(union node *, int);
-STATIC void evalsubshell(union node *, int);
-STATIC void expredir(union node *);
-STATIC void evalpipe(union node *);
-STATIC void evalcommand(union node *, int, struct backcmd *);
-STATIC void prehash(union node *);
-
-
-/*
- * Called to reset things after an exception.
- */
-
-#ifdef mkinit
-INCLUDE "eval.h"
-
-RESET {
- evalskip = 0;
- loopnest = 0;
- funcnest = 0;
-}
-
-SHELLPROC {
- exitstatus = 0;
-}
-#endif
-
-static int
-sh_pipe(int fds[2])
-{
- int nfd;
-
- if (pipe(fds))
- return -1;
-
- if (fds[0] < 3) {
- nfd = fcntl(fds[0], F_DUPFD, 3);
- if (nfd != -1) {
- close(fds[0]);
- fds[0] = nfd;
- }
- }
-
- if (fds[1] < 3) {
- nfd = fcntl(fds[1], F_DUPFD, 3);
- if (nfd != -1) {
- close(fds[1]);
- fds[1] = nfd;
- }
- }
- return 0;
-}
-
-
-/*
- * The eval commmand.
- */
-
-int
-evalcmd(int argc, char **argv)
-{
- char *p;
- char *concat;
- char **ap;
-
- if (argc > 1) {
- p = argv[1];
- if (argc > 2) {
- STARTSTACKSTR(concat);
- ap = argv + 2;
- for (;;) {
- while (*p)
- STPUTC(*p++, concat);
- if ((p = *ap++) == NULL)
- break;
- STPUTC(' ', concat);
- }
- STPUTC('\0', concat);
- p = grabstackstr(concat);
- }
- evalstring(p, EV_TESTED);
- }
- return exitstatus;
-}
-
-
-/*
- * Execute a command or commands contained in a string.
- */
-
-void
-evalstring(char *s, int flag)
-{
- union node *n;
- struct stackmark smark;
-
- setstackmark(&smark);
- setinputstring(s, 1);
-
- while ((n = parsecmd(0)) != NEOF) {
- evaltree(n, flag);
- popstackmark(&smark);
- }
- popfile();
- popstackmark(&smark);
-}
-
-
-
-/*
- * Evaluate a parse tree. The value is left in the global variable
- * exitstatus.
- */
-
-void
-evaltree(union node *n, int flags)
-{
- if (n == NULL) {
- TRACE(("evaltree(NULL) called\n"));
- exitstatus = 0;
- goto out;
- }
-#ifdef WITH_HISTORY
- displayhist = 1; /* show history substitutions done with fc */
-#endif
- TRACE(("pid %d, evaltree(%p: %d, %d) called\n",
- getpid(), n, n->type, flags));
- switch (n->type) {
- case NSEMI:
- evaltree(n->nbinary.ch1, flags & EV_TESTED);
- if (evalskip)
- goto out;
- evaltree(n->nbinary.ch2, flags);
- break;
- case NAND:
- evaltree(n->nbinary.ch1, EV_TESTED);
- if (evalskip || exitstatus != 0)
- goto out;
- evaltree(n->nbinary.ch2, flags);
- break;
- case NOR:
- evaltree(n->nbinary.ch1, EV_TESTED);
- if (evalskip || exitstatus == 0)
- goto out;
- evaltree(n->nbinary.ch2, flags);
- break;
- case NREDIR:
- expredir(n->nredir.redirect);
- redirect(n->nredir.redirect, REDIR_PUSH);
- evaltree(n->nredir.n, flags);
- popredir();
- break;
- case NSUBSHELL:
- evalsubshell(n, flags);
- break;
- case NBACKGND:
- evalsubshell(n, flags);
- break;
- case NIF: {
- evaltree(n->nif.test, EV_TESTED);
- if (evalskip)
- goto out;
- if (exitstatus == 0)
- evaltree(n->nif.ifpart, flags);
- else if (n->nif.elsepart)
- evaltree(n->nif.elsepart, flags);
- else
- exitstatus = 0;
- break;
- }
- case NWHILE:
- case NUNTIL:
- evalloop(n, flags);
- break;
- case NFOR:
- evalfor(n, flags);
- break;
- case NCASE:
- evalcase(n, flags);
- break;
- case NDEFUN:
- defun(n->narg.text, n->narg.next);
- exitstatus = 0;
- break;
- case NNOT:
- evaltree(n->nnot.com, EV_TESTED);
- exitstatus = !exitstatus;
- break;
- case NPIPE:
- evalpipe(n);
- break;
- case NCMD:
- evalcommand(n, flags, (struct backcmd *)NULL);
- break;
- default:
- out1fmt("Node type = %d\n", n->type);
- flushout(&output);
- break;
- }
-out:
- if (pendingsigs)
- dotrap();
- if ((flags & EV_EXIT) != 0)
- exitshell(exitstatus);
-}
-
-
-STATIC void
-evalloop(union node *n, int flags)
-{
- int status;
-
- loopnest++;
- status = 0;
- for (;;) {
- evaltree(n->nbinary.ch1, EV_TESTED);
- if (evalskip) {
-skipping: if (evalskip == SKIPCONT && --skipcount <= 0) {
- evalskip = 0;
- continue;
- }
- if (evalskip == SKIPBREAK && --skipcount <= 0)
- evalskip = 0;
- break;
- }
- if (n->type == NWHILE) {
- if (exitstatus != 0)
- break;
- } else {
- if (exitstatus == 0)
- break;
- }
- evaltree(n->nbinary.ch2, flags & EV_TESTED);
- status = exitstatus;
- if (evalskip)
- goto skipping;
- }
- loopnest--;
- exitstatus = status;
-}
-
-
-
-STATIC void
-evalfor(union node *n, int flags)
-{
- struct arglist arglist;
- union node *argp;
- struct strlist *sp;
- struct stackmark smark;
- int status = 0;
-
- setstackmark(&smark);
- arglist.lastp = &arglist.list;
- for (argp = n->nfor.args ; argp ; argp = argp->narg.next) {
- expandarg(argp, &arglist, EXP_FULL | EXP_TILDE);
- if (evalskip)
- goto out;
- }
- *arglist.lastp = NULL;
-
- loopnest++;
- for (sp = arglist.list ; sp ; sp = sp->next) {
- setvar(n->nfor.var, sp->text, 0);
- evaltree(n->nfor.body, flags & EV_TESTED);
- status = exitstatus;
- if (evalskip) {
- if (evalskip == SKIPCONT && --skipcount <= 0) {
- evalskip = 0;
- continue;
- }
- if (evalskip == SKIPBREAK && --skipcount <= 0)
- evalskip = 0;
- break;
- }
- }
- loopnest--;
- exitstatus = status;
-out:
- popstackmark(&smark);
-}
-
-
-
-STATIC void
-evalcase(union node *n, int flags)
-{
- union node *cp;
- union node *patp;
- struct arglist arglist;
- struct stackmark smark;
- int status = 0;
-
- setstackmark(&smark);
- arglist.lastp = &arglist.list;
- expandarg(n->ncase.expr, &arglist, EXP_TILDE);
- for (cp = n->ncase.cases ; cp && evalskip == 0 ; cp = cp->nclist.next) {
- for (patp = cp->nclist.pattern ; patp ; patp = patp->narg.next) {
- if (casematch(patp, arglist.list->text)) {
- if (evalskip == 0) {
- evaltree(cp->nclist.body, flags);
- status = exitstatus;
- }
- goto out;
- }
- }
- }
-out:
- exitstatus = status;
- popstackmark(&smark);
-}
-
-
-
-/*
- * Kick off a subshell to evaluate a tree.
- */
-
-STATIC void
-evalsubshell(union node *n, int flags)
-{
- struct job *jp;
- int backgnd = (n->type == NBACKGND);
-
- expredir(n->nredir.redirect);
- INTOFF;
- jp = makejob(n, 1);
- if (forkshell(jp, n, backgnd) == 0) {
- INTON;
- if (backgnd)
- flags &=~ EV_TESTED;
- redirect(n->nredir.redirect, 0);
- /* never returns */
- evaltree(n->nredir.n, flags | EV_EXIT);
- }
- if (! backgnd)
- exitstatus = waitforjob(jp);
- INTON;
-}
-
-
-
-/*
- * Compute the names of the files in a redirection list.
- */
-
-STATIC void
-expredir(union node *n)
-{
- union node *redir;
-
- for (redir = n ; redir ; redir = redir->nfile.next) {
- struct arglist fn;
- fn.lastp = &fn.list;
- switch (redir->type) {
- case NFROMTO:
- case NFROM:
- case NTO:
- case NCLOBBER:
- case NAPPEND:
- expandarg(redir->nfile.fname, &fn, EXP_TILDE | EXP_REDIR);
- redir->nfile.expfname = fn.list->text;
- break;
- case NFROMFD:
- case NTOFD:
- if (redir->ndup.vname) {
- expandarg(redir->ndup.vname, &fn, EXP_FULL | EXP_TILDE);
- fixredir(redir, fn.list->text, 1);
- }
- break;
- }
- }
-}
-
-
-
-/*
- * Evaluate a pipeline. All the processes in the pipeline are children
- * of the process creating the pipeline. (This differs from some versions
- * of the shell, which make the last process in a pipeline the parent
- * of all the rest.)
- */
-
-STATIC void
-evalpipe(union node *n)
-{
- struct job *jp;
- struct nodelist *lp;
- int pipelen;
- int prevfd;
- int pip[2];
-
- TRACE(("evalpipe(0x%lx) called\n", (long)n));
- pipelen = 0;
- for (lp = n->npipe.cmdlist ; lp ; lp = lp->next)
- pipelen++;
- INTOFF;
- jp = makejob(n, pipelen);
- prevfd = -1;
- for (lp = n->npipe.cmdlist ; lp ; lp = lp->next) {
- prehash(lp->n);
- pip[1] = -1;
- if (lp->next) {
- if (sh_pipe(pip) < 0) {
- close(prevfd);
- error("Pipe call failed");
- }
- }
- if (forkshell(jp, lp->n, n->npipe.backgnd) == 0) {
- INTON;
- if (prevfd > 0) {
- close(0);
- copyfd(prevfd, 0);
- close(prevfd);
- }
- if (pip[1] >= 0) {
- close(pip[0]);
- if (pip[1] != 1) {
- close(1);
- copyfd(pip[1], 1);
- close(pip[1]);
- }
- }
- evaltree(lp->n, EV_EXIT);
- }
- if (prevfd >= 0)
- close(prevfd);
- prevfd = pip[0];
- close(pip[1]);
- }
- if (n->npipe.backgnd == 0) {
- exitstatus = waitforjob(jp);
- TRACE(("evalpipe: job done exit status %d\n", exitstatus));
- }
- INTON;
-}
-
-
-
-/*
- * Execute a command inside back quotes. If it's a builtin command, we
- * want to save its output in a block obtained from malloc. Otherwise
- * we fork off a subprocess and get the output of the command via a pipe.
- * Should be called with interrupts off.
- */
-
-void
-evalbackcmd(union node *n, struct backcmd *result)
-{
- int pip[2];
- struct job *jp;
- struct stackmark smark; /* unnecessary */
-
- setstackmark(&smark);
- result->fd = -1;
- result->buf = NULL;
- result->nleft = 0;
- result->jp = NULL;
- if (n == NULL) {
- goto out;
- }
-#ifdef notyet
- /*
- * For now we disable executing builtins in the same
- * context as the shell, because we are not keeping
- * enough state to recover from changes that are
- * supposed only to affect subshells. eg. echo "`cd /`"
- */
- if (n->type == NCMD) {
- exitstatus = oexitstatus;
- evalcommand(n, EV_BACKCMD, result);
- } else
-#endif
- {
- INTOFF;
- if (sh_pipe(pip) < 0)
- error("Pipe call failed");
- jp = makejob(n, 1);
- if (forkshell(jp, n, FORK_NOJOB) == 0) {
- FORCEINTON;
- close(pip[0]);
- if (pip[1] != 1) {
- close(1);
- copyfd(pip[1], 1);
- close(pip[1]);
- }
- eflag = 0;
- evaltree(n, EV_EXIT);
- /* NOTREACHED */
- }
- close(pip[1]);
- result->fd = pip[0];
- result->jp = jp;
- INTON;
- }
-out:
- popstackmark(&smark);
- TRACE(("evalbackcmd done: fd=%d buf=0x%x nleft=%d jp=0x%x\n",
- result->fd, result->buf, result->nleft, result->jp));
-}
-
-static const char *
-syspath(void)
-{
- static char *sys_path = NULL;
-#ifndef __linux__
- static int mib[] = {CTL_USER, USER_CS_PATH};
-#endif
- static char def_path[] = "PATH=/usr/bin:/bin:/usr/sbin:/sbin";
-
- if (sys_path == NULL) {
-#ifndef __linux__
- size_t len;
- if (sysctl(mib, 2, 0, &len, 0, 0) != -1 &&
- (sys_path = ckmalloc(len + 5)) != NULL &&
- sysctl(mib, 2, sys_path + 5, &len, 0, 0) != -1) {
- memcpy(sys_path, "PATH=", 5);
- } else
-#endif
- {
- ckfree(sys_path);
- /* something to keep things happy */
- sys_path = def_path;
- }
- }
- return sys_path;
-}
-
-static int
-parse_command_args(int argc, char **argv, int *use_syspath)
-{
- int sv_argc = argc;
- char *cp, c;
-
- *use_syspath = 0;
-
- for (;;) {
- argv++;
- if (--argc == 0)
- break;
- cp = *argv;
- if (*cp++ != '-')
- break;
- if (*cp == '-' && cp[1] == 0) {
- argv++;
- argc--;
- break;
- }
- while ((c = *cp++)) {
- switch (c) {
- case 'p':
- *use_syspath = 1;
- break;
- default:
- /* run 'typecmd' for other options */
- return 0;
- }
- }
- }
- return sv_argc - argc;
-}
-
-int vforked = 0;
-
-/*
- * Execute a simple command.
- */
-
-STATIC void
-evalcommand(union node *cmd, int flags, struct backcmd *backcmd)
-{
- struct stackmark smark;
- union node *argp;
- struct arglist arglist;
- struct arglist varlist;
- char **argv;
- int argc;
- char **envp;
- int varflag;
- struct strlist *sp;
- int mode;
- int pip[2];
- struct cmdentry cmdentry;
- struct job *jp;
- struct jmploc jmploc;
- struct jmploc *volatile savehandler = 0;
- char *volatile savecmdname;
- volatile struct shparam saveparam;
- struct localvar *volatile savelocalvars;
- volatile int e;
- char *lastarg;
- const char *path = pathval();
- volatile int temp_path = 0;
-#if __GNUC__
- /* Avoid longjmp clobbering */
- (void) &argv;
- (void) &argc;
- (void) &lastarg;
- (void) &flags;
-#endif
-
- vforked = 0;
- /* First expand the arguments. */
- TRACE(("evalcommand(0x%lx, %d) called\n", (long)cmd, flags));
- setstackmark(&smark);
- back_exitstatus = 0;
-
- arglist.lastp = &arglist.list;
- varflag = 1;
- /* Expand arguments, ignoring the initial 'name=value' ones */
- for (argp = cmd->ncmd.args ; argp ; argp = argp->narg.next) {
- char *p = argp->narg.text;
- if (varflag && is_name(*p)) {
- do {
- p++;
- } while (is_in_name(*p));
- if (*p == '=')
- continue;
- }
- expandarg(argp, &arglist, EXP_FULL | EXP_TILDE);
- varflag = 0;
- }
- *arglist.lastp = NULL;
-
- expredir(cmd->ncmd.redirect);
-
- /* Now do the initial 'name=value' ones we skipped above */
- varlist.lastp = &varlist.list;
- for (argp = cmd->ncmd.args ; argp ; argp = argp->narg.next) {
- char *p = argp->narg.text;
- if (!is_name(*p))
- break;
- do
- p++;
- while (is_in_name(*p));
- if (*p != '=')
- break;
- expandarg(argp, &varlist, EXP_VARTILDE);
- }
- *varlist.lastp = NULL;
-
- argc = 0;
- for (sp = arglist.list ; sp ; sp = sp->next)
- argc++;
- argv = stalloc(sizeof (char *) * (argc + 1));
-
- for (sp = arglist.list ; sp ; sp = sp->next) {
- TRACE(("evalcommand arg: %s\n", sp->text));
- *argv++ = sp->text;
- }
- *argv = NULL;
- lastarg = NULL;
- if (iflag && funcnest == 0 && argc > 0)
- lastarg = argv[-1];
- argv -= argc;
-
- /* Print the command if xflag is set. */
- if (xflag) {
- char sep = 0;
- out2str(ps4val());
- for (sp = varlist.list ; sp ; sp = sp->next) {
- if (sep != 0)
- outc(sep, &errout);
- out2str(sp->text);
- sep = ' ';
- }
- for (sp = arglist.list ; sp ; sp = sp->next) {
- if (sep != 0)
- outc(sep, &errout);
- out2str(sp->text);
- sep = ' ';
- }
- outc('\n', &errout);
- flushout(&errout);
- }
-
- /* Now locate the command. */
- if (argc == 0) {
- cmdentry.cmdtype = CMDSPLBLTIN;
- cmdentry.u.bltin = bltincmd;
- } else {
- static const char PATH[] = "PATH=";
- int cmd_flags = DO_ERR;
-
- /*
- * Modify the command lookup path, if a PATH= assignment
- * is present
- */
- for (sp = varlist.list; sp; sp = sp->next)
- if (strncmp(sp->text, PATH, sizeof(PATH) - 1) == 0)
- path = sp->text + sizeof(PATH) - 1;
-
- do {
- int argsused, use_syspath;
- find_command(argv[0], &cmdentry, cmd_flags, path);
- if (cmdentry.cmdtype == CMDUNKNOWN) {
- exitstatus = 127;
- flushout(&errout);
- goto out;
- }
-
- /* implement the 'command' builtin here */
- if (cmdentry.cmdtype != CMDBUILTIN ||
- cmdentry.u.bltin != bltincmd)
- break;
- cmd_flags |= DO_NOFUNC;
- argsused = parse_command_args(argc, argv, &use_syspath);
- if (argsused == 0) {
- /* use 'type' builting to display info */
- cmdentry.u.bltin = typecmd;
- break;
- }
- argc -= argsused;
- argv += argsused;
- if (use_syspath)
- path = syspath() + 5;
- } while (argc != 0);
- if (cmdentry.cmdtype == CMDSPLBLTIN && cmd_flags & DO_NOFUNC)
- /* posix mandates that 'command <splbltin>' act as if
- <splbltin> was a normal builtin */
- cmdentry.cmdtype = CMDBUILTIN;
- }
-
- /* Fork off a child process if necessary. */
- if (cmd->ncmd.backgnd
- || (cmdentry.cmdtype == CMDNORMAL && (flags & EV_EXIT) == 0)
- || ((flags & EV_BACKCMD) != 0
- && ((cmdentry.cmdtype != CMDBUILTIN && cmdentry.cmdtype != CMDSPLBLTIN)
- || cmdentry.u.bltin == dotcmd
- || cmdentry.u.bltin == evalcmd))) {
- INTOFF;
- jp = makejob(cmd, 1);
- mode = cmd->ncmd.backgnd;
- if (flags & EV_BACKCMD) {
- mode = FORK_NOJOB;
- if (sh_pipe(pip) < 0)
- error("Pipe call failed");
- }
-#ifdef DO_SHAREDVFORK
- /* It is essential that if DO_SHAREDVFORK is defined that the
- * child's address space is actually shared with the parent as
- * we rely on this.
- */
- if (cmdentry.cmdtype == CMDNORMAL) {
- pid_t pid;
-
- savelocalvars = localvars;
- localvars = NULL;
- vforked = 1;
- switch (pid = vfork()) {
- case -1:
- TRACE(("Vfork failed, errno=%d\n", errno));
- INTON;
- error("Cannot vfork");
- break;
- case 0:
- /* Make sure that exceptions only unwind to
- * after the vfork(2)
- */
- if (setjmp(jmploc.loc)) {
- if (exception == EXSHELLPROC) {
- /* We can't progress with the vfork,
- * so, set vforked = 2 so the parent
- * knows, and _exit();
- */
- vforked = 2;
- _exit(0);
- } else {
- _exit(exerrno);
- }
- }
- savehandler = handler;
- handler = &jmploc;
- listmklocal(varlist.list, VEXPORT | VNOFUNC);
- forkchild(jp, cmd, mode, vforked);
- break;
- default:
- handler = savehandler; /* restore from vfork(2) */
- poplocalvars();
- localvars = savelocalvars;
- if (vforked == 2) {
- vforked = 0;
-
- (void)waitpid(pid, NULL, 0);
- /* We need to progress in a normal fork fashion */
- goto normal_fork;
- }
- vforked = 0;
- forkparent(jp, cmd, mode, pid);
- goto parent;
- }
- } else {
-normal_fork:
-#endif
- if (forkshell(jp, cmd, mode) != 0)
- goto parent; /* at end of routine */
- FORCEINTON;
-#ifdef DO_SHAREDVFORK
- }
-#endif
- if (flags & EV_BACKCMD) {
- if (!vforked) {
- FORCEINTON;
- }
- close(pip[0]);
- if (pip[1] != 1) {
- close(1);
- copyfd(pip[1], 1);
- close(pip[1]);
- }
- }
- flags |= EV_EXIT;
- }
-
- /* This is the child process if a fork occurred. */
- /* Execute the command. */
- switch (cmdentry.cmdtype) {
- case CMDFUNCTION:
-#ifdef DEBUG
- trputs("Shell function: "); trargs(argv);
-#endif
- redirect(cmd->ncmd.redirect, REDIR_PUSH);
- saveparam = shellparam;
- shellparam.malloc = 0;
- shellparam.reset = 1;
- shellparam.nparam = argc - 1;
- shellparam.p = argv + 1;
- shellparam.optnext = NULL;
- INTOFF;
- savelocalvars = localvars;
- localvars = NULL;
- INTON;
- if (setjmp(jmploc.loc)) {
- if (exception == EXSHELLPROC) {
- freeparam((volatile struct shparam *)
- &saveparam);
- } else {
- freeparam(&shellparam);
- shellparam = saveparam;
- }
- poplocalvars();
- localvars = savelocalvars;
- handler = savehandler;
- longjmp(handler->loc, 1);
- }
- savehandler = handler;
- handler = &jmploc;
- listmklocal(varlist.list, 0);
- /* stop shell blowing its stack */
- if (++funcnest > 1000)
- error("too many nested function calls");
- evaltree(cmdentry.u.func, flags & EV_TESTED);
- funcnest--;
- INTOFF;
- poplocalvars();
- localvars = savelocalvars;
- freeparam(&shellparam);
- shellparam = saveparam;
- handler = savehandler;
- popredir();
- INTON;
- if (evalskip == SKIPFUNC) {
- evalskip = 0;
- skipcount = 0;
- }
- if (flags & EV_EXIT)
- exitshell(exitstatus);
- break;
-
- case CMDBUILTIN:
- case CMDSPLBLTIN:
-#ifdef DEBUG
- trputs("builtin command: "); trargs(argv);
-#endif
- mode = (cmdentry.u.bltin == execcmd) ? 0 : REDIR_PUSH;
- if (flags == EV_BACKCMD) {
- memout.nleft = 0;
- memout.nextc = memout.buf;
- memout.bufsize = 64;
- mode |= REDIR_BACKQ;
- }
- e = -1;
- savehandler = handler;
- savecmdname = commandname;
- handler = &jmploc;
- if (!setjmp(jmploc.loc)) {
- /* We need to ensure the command hash table isn't
- * corruped by temporary PATH assignments.
- * However we must ensure the 'local' command works!
- */
- if (path != pathval() && (cmdentry.u.bltin == hashcmd ||
- cmdentry.u.bltin == typecmd)) {
- savelocalvars = localvars;
- localvars = 0;
- mklocal(path - 5 /* PATH= */, 0);
- temp_path = 1;
- } else
- temp_path = 0;
- redirect(cmd->ncmd.redirect, mode);
-
- /* exec is a special builtin, but needs this list... */
- cmdenviron = varlist.list;
- /* we must check 'readonly' flag for all builtins */
- listsetvar(varlist.list,
- cmdentry.cmdtype == CMDSPLBLTIN ? 0 : VNOSET);
- commandname = argv[0];
- /* initialize nextopt */
- argptr = argv + 1;
- optptr = NULL;
- /* and getopt */
-#ifndef __linux__
- optreset = 1;
-#endif
- optind = 1;
- exitstatus = cmdentry.u.bltin(argc, argv);
- } else {
- e = exception;
- exitstatus = e == EXINT ? SIGINT + 128 :
- e == EXEXEC ? exerrno : 2;
- }
- handler = savehandler;
- flushall();
- out1 = &output;
- out2 = &errout;
- freestdout();
- if (temp_path) {
- poplocalvars();
- localvars = savelocalvars;
- }
- cmdenviron = NULL;
- if (e != EXSHELLPROC) {
- commandname = savecmdname;
- if (flags & EV_EXIT)
- exitshell(exitstatus);
- }
- if (e != -1) {
- if ((e != EXERROR && e != EXEXEC)
- || cmdentry.cmdtype == CMDSPLBLTIN)
- exraise(e);
- FORCEINTON;
- }
- if (cmdentry.u.bltin != execcmd)
- popredir();
- if (flags == EV_BACKCMD) {
- backcmd->buf = memout.buf;
- backcmd->nleft = memout.nextc - memout.buf;
- memout.buf = NULL;
- }
- break;
-
- default:
-#ifdef DEBUG
- trputs("normal command: "); trargs(argv);
-#endif
- clearredir(vforked);
- redirect(cmd->ncmd.redirect, vforked ? REDIR_VFORK : 0);
- if (!vforked)
- for (sp = varlist.list ; sp ; sp = sp->next)
- setvareq(sp->text, VEXPORT|VSTACK);
- envp = environment();
- shellexec(argv, envp, path, cmdentry.u.index, vforked);
- break;
- }
- goto out;
-
-parent: /* parent process gets here (if we forked) */
- if (mode == FORK_FG) { /* argument to fork */
- exitstatus = waitforjob(jp);
- } else if (mode == FORK_NOJOB) {
- backcmd->fd = pip[0];
- close(pip[1]);
- backcmd->jp = jp;
- }
- FORCEINTON;
-
-out:
- if (lastarg)
- /* dsl: I think this is intended to be used to support
- * '_' in 'vi' command mode during line editing...
- * However I implemented that within libedit itself.
- */
- setvar("_", lastarg, 0);
- popstackmark(&smark);
-
- if (eflag && exitstatus && !(flags & EV_TESTED))
- exitshell(exitstatus);
-}
-
-
-/*
- * Search for a command. This is called before we fork so that the
- * location of the command will be available in the parent as well as
- * the child. The check for "goodname" is an overly conservative
- * check that the name will not be subject to expansion.
- */
-
-STATIC void
-prehash(union node *n)
-{
- struct cmdentry entry;
-
- if (n->type == NCMD && n->ncmd.args)
- if (goodname(n->ncmd.args->narg.text))
- find_command(n->ncmd.args->narg.text, &entry, 0,
- pathval());
-}
-
-
-
-/*
- * Builtin commands. Builtin commands whose functions are closely
- * tied to evaluation are implemented here.
- */
-
-/*
- * No command given.
- */
-
-int
-bltincmd(int argc, char **argv)
-{
- /*
- * Preserve exitstatus of a previous possible redirection
- * as POSIX mandates
- */
- return back_exitstatus;
-}
-
-
-/*
- * Handle break and continue commands. Break, continue, and return are
- * all handled by setting the evalskip flag. The evaluation routines
- * above all check this flag, and if it is set they start skipping
- * commands rather than executing them. The variable skipcount is
- * the number of loops to break/continue, or the number of function
- * levels to return. (The latter is always 1.) It should probably
- * be an error to break out of more loops than exist, but it isn't
- * in the standard shell so we don't make it one here.
- */
-
-int
-breakcmd(int argc, char **argv)
-{
- int n = argc > 1 ? number(argv[1]) : 1;
-
- if (n > loopnest)
- n = loopnest;
- if (n > 0) {
- evalskip = (**argv == 'c')? SKIPCONT : SKIPBREAK;
- skipcount = n;
- }
- return 0;
-}
-
-
-/*
- * The return command.
- */
-
-int
-returncmd(int argc, char **argv)
-{
- int ret = argc > 1 ? number(argv[1]) : exitstatus;
-
- if (funcnest) {
- evalskip = SKIPFUNC;
- skipcount = 1;
- return ret;
- }
- else {
- /* Do what ksh does; skip the rest of the file */
- evalskip = SKIPFILE;
- skipcount = 1;
- return ret;
- }
-}
-
-
-int
-falsecmd(int argc, char **argv)
-{
- return 1;
-}
-
-
-int
-truecmd(int argc, char **argv)
-{
- return 0;
-}
-
-
-int
-execcmd(int argc, char **argv)
-{
- if (argc > 1) {
- struct strlist *sp;
-
- iflag = 0; /* exit on error */
- mflag = 0;
- optschanged();
- for (sp = cmdenviron; sp; sp = sp->next)
- setvareq(sp->text, VEXPORT|VSTACK);
- shellexec(argv + 1, environment(), pathval(), 0, 0);
- }
- return 0;
-}
-
-static int
-conv_time(clock_t ticks, char *seconds, size_t l)
-{
- static clock_t tpm = 0;
- clock_t mins;
- int i;
-
- mins = ticks / tpm;
- snprintf(seconds, l, "%.4f", (ticks - mins * tpm) * 60.0 / tpm );
-
- if (seconds[0] == '6' && seconds[1] == '0') {
- /* 59.99995 got rounded up... */
- mins++;
- strlcpy(seconds, "0.0", l);
- return mins;
- }
-
- /* suppress trailing zeros */
- i = strlen(seconds) - 1;
- for (; seconds[i] == '0' && seconds[i - 1] != '.'; i--)
- seconds[i] = 0;
- return mins;
-}
-
-int
-timescmd(int argc, char **argv)
-{
- struct tms tms;
- int u, s, cu, cs;
- char us[8], ss[8], cus[8], css[8];
-
- nextopt("");
-
- times(&tms);
-
- u = conv_time(tms.tms_utime, us, sizeof(us));
- s = conv_time(tms.tms_stime, ss, sizeof(ss));
- cu = conv_time(tms.tms_cutime, cus, sizeof(cus));
- cs = conv_time(tms.tms_cstime, css, sizeof(css));
-
- outfmt(out1, "%dm%ss %dm%ss\n%dm%ss %dm%ss\n",
- u, us, s, ss, cu, cus, cs, css);
-
- return 0;
-}
diff --git a/sh/eval.h b/sh/eval.h
deleted file mode 100644
index 155bc44..0000000
--- a/sh/eval.h
+++ /dev/null
@@ -1,64 +0,0 @@
-/* $NetBSD: eval.h,v 1.14 2003/08/07 09:05:31 agc Exp $ */
-
-/*-
- * Copyright (c) 1991, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Kenneth Almquist.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * @(#)eval.h 8.2 (Berkeley) 5/4/95
- */
-
-extern char *commandname; /* currently executing command */
-extern int exitstatus; /* exit status of last command */
-extern int back_exitstatus; /* exit status of backquoted command */
-extern struct strlist *cmdenviron; /* environment for builtin command */
-
-
-struct backcmd { /* result of evalbackcmd */
- int fd; /* file descriptor to read from */
- char *buf; /* buffer */
- int nleft; /* number of chars in buffer */
- struct job *jp; /* job structure for command */
-};
-
-void evalstring(char *, int);
-union node; /* BLETCH for ansi C */
-void evaltree(union node *, int);
-void evalbackcmd(union node *, struct backcmd *);
-
-/* in_function returns nonzero if we are currently evaluating a function */
-#define in_function() funcnest
-extern int funcnest;
-extern int evalskip;
-
-/* reasons for skipping commands (see comment on breakcmd routine) */
-#define SKIPBREAK 1
-#define SKIPCONT 2
-#define SKIPFUNC 3
-#define SKIPFILE 4
diff --git a/sh/exec.c b/sh/exec.c
deleted file mode 100644
index fe3613f..0000000
--- a/sh/exec.c
+++ /dev/null
@@ -1,1063 +0,0 @@
-/* $NetBSD: exec.c,v 1.37 2003/08/07 09:05:31 agc Exp $ */
-
-/*-
- * Copyright (c) 1991, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Kenneth Almquist.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <sys/cdefs.h>
-#ifndef lint
-#if 0
-static char sccsid[] = "@(#)exec.c 8.4 (Berkeley) 6/8/95";
-#else
-__RCSID("$NetBSD: exec.c,v 1.37 2003/08/07 09:05:31 agc Exp $");
-#endif
-#endif /* not lint */
-
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <sys/wait.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <errno.h>
-#include <stdio.h>
-#include <stdlib.h>
-
-/*
- * When commands are first encountered, they are entered in a hash table.
- * This ensures that a full path search will not have to be done for them
- * on each invocation.
- *
- * We should investigate converting to a linear search, even though that
- * would make the command name "hash" a misnomer.
- */
-
-#include "shell.h"
-#include "main.h"
-#include "nodes.h"
-#include "parser.h"
-#include "redir.h"
-#include "eval.h"
-#include "exec.h"
-#include "builtins.h"
-#include "var.h"
-#include "options.h"
-#include "input.h"
-#include "output.h"
-#include "syntax.h"
-#include "memalloc.h"
-#include "error.h"
-#include "init.h"
-#include "mystring.h"
-#include "show.h"
-#include "jobs.h"
-#include "alias.h"
-
-
-#define CMDTABLESIZE 31 /* should be prime */
-#define ARB 1 /* actual size determined at run time */
-
-
-
-struct tblentry {
- struct tblentry *next; /* next entry in hash chain */
- union param param; /* definition of builtin function */
- short cmdtype; /* index identifying command */
- char rehash; /* if set, cd done since entry created */
- char cmdname[ARB]; /* name of command */
-};
-
-
-STATIC struct tblentry *cmdtable[CMDTABLESIZE];
-STATIC int builtinloc = -1; /* index in path of %builtin, or -1 */
-int exerrno = 0; /* Last exec error */
-
-
-STATIC void tryexec(char *, char **, char **, int);
-STATIC void execinterp(char **, char **);
-STATIC void printentry(struct tblentry *, int);
-STATIC void clearcmdentry(int);
-STATIC struct tblentry *cmdlookup(const char *, int);
-STATIC void delete_cmd_entry(void);
-
-
-extern char *const parsekwd[];
-
-/*
- * Exec a program. Never returns. If you change this routine, you may
- * have to change the find_command routine as well.
- */
-
-void
-shellexec(char **argv, char **envp, const char *path, int idx, int vforked)
-{
- char *cmdname;
- int e;
-
- if (strchr(argv[0], '/') != NULL) {
- tryexec(argv[0], argv, envp, vforked);
- e = errno;
- } else {
- e = ENOENT;
- while ((cmdname = padvance(&path, argv[0])) != NULL) {
- if (--idx < 0 && pathopt == NULL) {
- tryexec(cmdname, argv, envp, vforked);
- if (errno != ENOENT && errno != ENOTDIR)
- e = errno;
- }
- stunalloc(cmdname);
- }
- }
-
- /* Map to POSIX errors */
- switch (e) {
- case EACCES:
- exerrno = 126;
- break;
- case ENOENT:
- exerrno = 127;
- break;
- default:
- exerrno = 2;
- break;
- }
- TRACE(("shellexec failed for %s, errno %d, vforked %d, suppressint %d\n",
- argv[0], e, vforked, suppressint ));
- exerror(EXEXEC, "%s: %s", argv[0], errmsg(e, E_EXEC));
- /* NOTREACHED */
-}
-
-
-STATIC void
-tryexec(char *cmd, char **argv, char **envp, int vforked)
-{
- int e;
-#ifndef BSD
- char *p;
-#endif
-
-#ifdef SYSV
- do {
- execve(cmd, argv, envp);
- } while (errno == EINTR);
-#else
- execve(cmd, argv, envp);
-#endif
- e = errno;
- if (e == ENOEXEC) {
- if (vforked) {
- /* We are currently vfork(2)ed, so raise an
- * exception, and evalcommand will try again
- * with a normal fork(2).
- */
- exraise(EXSHELLPROC);
- }
- initshellproc();
- setinputfile(cmd, 0);
- commandname = arg0 = savestr(argv[0]);
-#if !defined(BSD) && !defined(__linux__)
- pgetc(); pungetc(); /* fill up input buffer */
- p = parsenextc;
- if (parsenleft > 2 && p[0] == '#' && p[1] == '!') {
- argv[0] = cmd;
- execinterp(argv, envp);
- }
-#endif
- setparam(argv + 1);
- exraise(EXSHELLPROC);
- }
- errno = e;
-}
-
-
-#if !defined(BSD) && !defined(__linux__)
-/*
- * Execute an interpreter introduced by "#!", for systems where this
- * feature has not been built into the kernel. If the interpreter is
- * the shell, return (effectively ignoring the "#!"). If the execution
- * of the interpreter fails, exit.
- *
- * This code peeks inside the input buffer in order to avoid actually
- * reading any input. It would benefit from a rewrite.
- */
-
-#define NEWARGS 5
-
-STATIC void
-execinterp(char **argv, char **envp)
-{
- int n;
- char *inp;
- char *outp;
- char c;
- char *p;
- char **ap;
- char *newargs[NEWARGS];
- int i;
- char **ap2;
- char **new;
-
- n = parsenleft - 2;
- inp = parsenextc + 2;
- ap = newargs;
- for (;;) {
- while (--n >= 0 && (*inp == ' ' || *inp == '\t'))
- inp++;
- if (n < 0)
- goto bad;
- if ((c = *inp++) == '\n')
- break;
- if (ap == &newargs[NEWARGS])
-bad: error("Bad #! line");
- STARTSTACKSTR(outp);
- do {
- STPUTC(c, outp);
- } while (--n >= 0 && (c = *inp++) != ' ' && c != '\t' && c != '\n');
- STPUTC('\0', outp);
- n++, inp--;
- *ap++ = grabstackstr(outp);
- }
- if (ap == newargs + 1) { /* if no args, maybe no exec is needed */
- p = newargs[0];
- for (;;) {
- if (equal(p, "sh") || equal(p, "ash")) {
- return;
- }
- while (*p != '/') {
- if (*p == '\0')
- goto break2;
- p++;
- }
- p++;
- }
-break2:;
- }
- i = (char *)ap - (char *)newargs; /* size in bytes */
- if (i == 0)
- error("Bad #! line");
- for (ap2 = argv ; *ap2++ != NULL ; );
- new = ckmalloc(i + ((char *)ap2 - (char *)argv));
- ap = newargs, ap2 = new;
- while ((i -= sizeof (char **)) >= 0)
- *ap2++ = *ap++;
- ap = argv;
- while (*ap2++ = *ap++);
- shellexec(new, envp, pathval(), 0);
- /* NOTREACHED */
-}
-#endif
-
-
-
-/*
- * Do a path search. The variable path (passed by reference) should be
- * set to the start of the path before the first call; padvance will update
- * this value as it proceeds. Successive calls to padvance will return
- * the possible path expansions in sequence. If an option (indicated by
- * a percent sign) appears in the path entry then the global variable
- * pathopt will be set to point to it; otherwise pathopt will be set to
- * NULL.
- */
-
-const char *pathopt;
-
-char *
-padvance(const char **path, const char *name)
-{
- const char *p;
- char *q;
- const char *start;
- int len;
-
- if (*path == NULL)
- return NULL;
- start = *path;
- for (p = start ; *p && *p != ':' && *p != '%' ; p++);
- len = p - start + strlen(name) + 2; /* "2" is for '/' and '\0' */
- while (stackblocksize() < len)
- growstackblock();
- q = stackblock();
- if (p != start) {
- memcpy(q, start, p - start);
- q += p - start;
- *q++ = '/';
- }
- strcpy(q, name);
- pathopt = NULL;
- if (*p == '%') {
- pathopt = ++p;
- while (*p && *p != ':') p++;
- }
- if (*p == ':')
- *path = p + 1;
- else
- *path = NULL;
- return stalloc(len);
-}
-
-
-
-/*** Command hashing code ***/
-
-
-int
-hashcmd(int argc, char **argv)
-{
- struct tblentry **pp;
- struct tblentry *cmdp;
- int c;
- int verbose;
- struct cmdentry entry;
- char *name;
-
- verbose = 0;
- while ((c = nextopt("rv")) != '\0') {
- if (c == 'r') {
- clearcmdentry(0);
- } else if (c == 'v') {
- verbose++;
- }
- }
- if (*argptr == NULL) {
- for (pp = cmdtable ; pp < &cmdtable[CMDTABLESIZE] ; pp++) {
- for (cmdp = *pp ; cmdp ; cmdp = cmdp->next) {
- if (verbose || cmdp->cmdtype == CMDNORMAL)
- printentry(cmdp, verbose);
- }
- }
- return 0;
- }
- while ((name = *argptr) != NULL) {
- if ((cmdp = cmdlookup(name, 0)) != NULL
- && (cmdp->cmdtype == CMDNORMAL
- || (cmdp->cmdtype == CMDBUILTIN && builtinloc >= 0)))
- delete_cmd_entry();
- find_command(name, &entry, DO_ERR, pathval());
- if (verbose) {
- if (entry.cmdtype != CMDUNKNOWN) { /* if no error msg */
- cmdp = cmdlookup(name, 0);
- printentry(cmdp, verbose);
- }
- flushall();
- }
- argptr++;
- }
- return 0;
-}
-
-
-STATIC void
-printentry(struct tblentry *cmdp, int verbose)
-{
- int idx;
- const char *path;
- char *name;
-
- switch (cmdp->cmdtype) {
- case CMDNORMAL:
- idx = cmdp->param.index;
- path = pathval();
- do {
- name = padvance(&path, cmdp->cmdname);
- stunalloc(name);
- } while (--idx >= 0);
- out1str(name);
- break;
- case CMDSPLBLTIN:
- out1fmt("special builtin %s", cmdp->cmdname);
- break;
- case CMDBUILTIN:
- out1fmt("builtin %s", cmdp->cmdname);
- break;
- case CMDFUNCTION:
- out1fmt("function %s", cmdp->cmdname);
- if (verbose) {
- struct procstat ps;
- INTOFF;
- commandtext(&ps, cmdp->param.func);
- INTON;
- out1str("() { ");
- out1str(ps.cmd);
- out1str("; }");
- }
- break;
- default:
- error("internal error: %s cmdtype %d", cmdp->cmdname, cmdp->cmdtype);
- }
- if (cmdp->rehash)
- out1c('*');
- out1c('\n');
-}
-
-
-
-/*
- * Resolve a command name. If you change this routine, you may have to
- * change the shellexec routine as well.
- */
-
-void
-find_command(char *name, struct cmdentry *entry, int act, const char *path)
-{
- struct tblentry *cmdp, loc_cmd;
- int idx;
- int prev;
- char *fullname;
- struct stat statb;
- int e;
- int (*bltin)(int,char **);
-
- /* If name contains a slash, don't use PATH or hash table */
- if (strchr(name, '/') != NULL) {
- if (act & DO_ABS) {
- while (stat(name, &statb) < 0) {
-#ifdef SYSV
- if (errno == EINTR)
- continue;
-#endif
- if (errno != ENOENT && errno != ENOTDIR)
- e = errno;
- entry->cmdtype = CMDUNKNOWN;
- entry->u.index = -1;
- return;
- }
- entry->cmdtype = CMDNORMAL;
- entry->u.index = -1;
- return;
- }
- entry->cmdtype = CMDNORMAL;
- entry->u.index = 0;
- return;
- }
-
- if (path != pathval())
- act |= DO_ALTPATH;
-
- if (act & DO_ALTPATH && strstr(path, "%builtin") != NULL)
- act |= DO_ALTBLTIN;
-
- /* If name is in the table, check answer will be ok */
- if ((cmdp = cmdlookup(name, 0)) != NULL) {
- do {
- switch (cmdp->cmdtype) {
- case CMDNORMAL:
- if (act & DO_ALTPATH) {
- cmdp = NULL;
- continue;
- }
- break;
- case CMDFUNCTION:
- if (act & DO_NOFUNC) {
- cmdp = NULL;
- continue;
- }
- break;
- case CMDBUILTIN:
- if ((act & DO_ALTBLTIN) || builtinloc >= 0) {
- cmdp = NULL;
- continue;
- }
- break;
- }
- /* if not invalidated by cd, we're done */
- if (cmdp->rehash == 0)
- goto success;
- } while (0);
- }
-
- /* If %builtin not in path, check for builtin next */
- if ((act & DO_ALTPATH ? !(act & DO_ALTBLTIN) : builtinloc < 0) &&
- (bltin = find_builtin(name)) != 0)
- goto builtin_success;
-
- /* We have to search path. */
- prev = -1; /* where to start */
- if (cmdp) { /* doing a rehash */
- if (cmdp->cmdtype == CMDBUILTIN)
- prev = builtinloc;
- else
- prev = cmdp->param.index;
- }
-
- e = ENOENT;
- idx = -1;
-loop:
- while ((fullname = padvance(&path, name)) != NULL) {
- stunalloc(fullname);
- idx++;
- if (pathopt) {
- if (prefix("builtin", pathopt)) {
- if ((bltin = find_builtin(name)) == 0)
- goto loop;
- goto builtin_success;
- } else if (prefix("func", pathopt)) {
- /* handled below */
- } else {
- /* ignore unimplemented options */
- goto loop;
- }
- }
- /* if rehash, don't redo absolute path names */
- if (fullname[0] == '/' && idx <= prev) {
- if (idx < prev)
- goto loop;
- TRACE(("searchexec \"%s\": no change\n", name));
- goto success;
- }
- while (stat(fullname, &statb) < 0) {
-#ifdef SYSV
- if (errno == EINTR)
- continue;
-#endif
- if (errno != ENOENT && errno != ENOTDIR)
- e = errno;
- goto loop;
- }
- e = EACCES; /* if we fail, this will be the error */
- if (!S_ISREG(statb.st_mode))
- goto loop;
- if (pathopt) { /* this is a %func directory */
- if (act & DO_NOFUNC)
- goto loop;
- stalloc(strlen(fullname) + 1);
- readcmdfile(fullname);
- if ((cmdp = cmdlookup(name, 0)) == NULL ||
- cmdp->cmdtype != CMDFUNCTION)
- error("%s not defined in %s", name, fullname);
- stunalloc(fullname);
- goto success;
- }
-#ifdef notdef
- /* XXX this code stops root executing stuff, and is buggy
- if you need a group from the group list. */
- if (statb.st_uid == geteuid()) {
- if ((statb.st_mode & 0100) == 0)
- goto loop;
- } else if (statb.st_gid == getegid()) {
- if ((statb.st_mode & 010) == 0)
- goto loop;
- } else {
- if ((statb.st_mode & 01) == 0)
- goto loop;
- }
-#endif
- TRACE(("searchexec \"%s\" returns \"%s\"\n", name, fullname));
- INTOFF;
- if (act & DO_ALTPATH) {
- stalloc(strlen(fullname) + 1);
- cmdp = &loc_cmd;
- } else
- cmdp = cmdlookup(name, 1);
- cmdp->cmdtype = CMDNORMAL;
- cmdp->param.index = idx;
- INTON;
- goto success;
- }
-
- /* We failed. If there was an entry for this command, delete it */
- if (cmdp)
- delete_cmd_entry();
- if (act & DO_ERR)
- outfmt(out2, "%s: %s\n", name, errmsg(e, E_EXEC));
- entry->cmdtype = CMDUNKNOWN;
- return;
-
-builtin_success:
- INTOFF;
- if (act & DO_ALTPATH)
- cmdp = &loc_cmd;
- else
- cmdp = cmdlookup(name, 1);
- if (cmdp->cmdtype == CMDFUNCTION)
- /* DO_NOFUNC must have been set */
- cmdp = &loc_cmd;
- cmdp->cmdtype = CMDBUILTIN;
- cmdp->param.bltin = bltin;
- INTON;
-success:
- cmdp->rehash = 0;
- entry->cmdtype = cmdp->cmdtype;
- entry->u = cmdp->param;
-}
-
-
-
-/*
- * Search the table of builtin commands.
- */
-
-int
-(*find_builtin(name))(int, char **)
- char *name;
-{
- const struct builtincmd *bp;
-
- for (bp = builtincmd ; bp->name ; bp++) {
- if (*bp->name == *name && equal(bp->name, name))
- return bp->builtin;
- }
- return 0;
-}
-
-int
-(*find_splbltin(name))(int, char **)
- char *name;
-{
- const struct builtincmd *bp;
-
- for (bp = splbltincmd ; bp->name ; bp++) {
- if (*bp->name == *name && equal(bp->name, name))
- return bp->builtin;
- }
- return 0;
-}
-
-/*
- * At shell startup put special builtins into hash table.
- * ensures they are executed first (see posix).
- * We stop functions being added with the same name
- * (as they are impossible to call)
- */
-
-void
-hash_special_builtins(void)
-{
- const struct builtincmd *bp;
- struct tblentry *cmdp;
-
- for (bp = splbltincmd ; bp->name ; bp++) {
- cmdp = cmdlookup(bp->name, 1);
- cmdp->cmdtype = CMDSPLBLTIN;
- cmdp->param.bltin = bp->builtin;
- }
-}
-
-
-
-/*
- * Called when a cd is done. Marks all commands so the next time they
- * are executed they will be rehashed.
- */
-
-void
-hashcd(void)
-{
- struct tblentry **pp;
- struct tblentry *cmdp;
-
- for (pp = cmdtable ; pp < &cmdtable[CMDTABLESIZE] ; pp++) {
- for (cmdp = *pp ; cmdp ; cmdp = cmdp->next) {
- if (cmdp->cmdtype == CMDNORMAL
- || (cmdp->cmdtype == CMDBUILTIN && builtinloc >= 0))
- cmdp->rehash = 1;
- }
- }
-}
-
-
-
-/*
- * Fix command hash table when PATH changed.
- * Called before PATH is changed. The argument is the new value of PATH;
- * pathval() still returns the old value at this point.
- * Called with interrupts off.
- */
-
-void
-changepath(const char *newval)
-{
- const char *old, *new;
- int idx;
- int firstchange;
- int bltin;
-
- old = pathval();
- new = newval;
- firstchange = 9999; /* assume no change */
- idx = 0;
- bltin = -1;
- for (;;) {
- if (*old != *new) {
- firstchange = idx;
- if ((*old == '\0' && *new == ':')
- || (*old == ':' && *new == '\0'))
- firstchange++;
- old = new; /* ignore subsequent differences */
- }
- if (*new == '\0')
- break;
- if (*new == '%' && bltin < 0 && prefix("builtin", new + 1))
- bltin = idx;
- if (*new == ':') {
- idx++;
- }
- new++, old++;
- }
- if (builtinloc < 0 && bltin >= 0)
- builtinloc = bltin; /* zap builtins */
- if (builtinloc >= 0 && bltin < 0)
- firstchange = 0;
- clearcmdentry(firstchange);
- builtinloc = bltin;
-}
-
-
-/*
- * Clear out command entries. The argument specifies the first entry in
- * PATH which has changed.
- */
-
-STATIC void
-clearcmdentry(int firstchange)
-{
- struct tblentry **tblp;
- struct tblentry **pp;
- struct tblentry *cmdp;
-
- INTOFF;
- for (tblp = cmdtable ; tblp < &cmdtable[CMDTABLESIZE] ; tblp++) {
- pp = tblp;
- while ((cmdp = *pp) != NULL) {
- if ((cmdp->cmdtype == CMDNORMAL &&
- cmdp->param.index >= firstchange)
- || (cmdp->cmdtype == CMDBUILTIN &&
- builtinloc >= firstchange)) {
- *pp = cmdp->next;
- ckfree(cmdp);
- } else {
- pp = &cmdp->next;
- }
- }
- }
- INTON;
-}
-
-
-/*
- * Delete all functions.
- */
-
-#ifdef mkinit
-MKINIT void deletefuncs(void);
-MKINIT void hash_special_builtins(void);
-
-INIT {
- hash_special_builtins();
-}
-
-SHELLPROC {
- deletefuncs();
-}
-#endif
-
-void
-deletefuncs(void)
-{
- struct tblentry **tblp;
- struct tblentry **pp;
- struct tblentry *cmdp;
-
- INTOFF;
- for (tblp = cmdtable ; tblp < &cmdtable[CMDTABLESIZE] ; tblp++) {
- pp = tblp;
- while ((cmdp = *pp) != NULL) {
- if (cmdp->cmdtype == CMDFUNCTION) {
- *pp = cmdp->next;
- freefunc(cmdp->param.func);
- ckfree(cmdp);
- } else {
- pp = &cmdp->next;
- }
- }
- }
- INTON;
-}
-
-
-
-/*
- * Locate a command in the command hash table. If "add" is nonzero,
- * add the command to the table if it is not already present. The
- * variable "lastcmdentry" is set to point to the address of the link
- * pointing to the entry, so that delete_cmd_entry can delete the
- * entry.
- */
-
-struct tblentry **lastcmdentry;
-
-
-STATIC struct tblentry *
-cmdlookup(const char *name, int add)
-{
- int hashval;
- const char *p;
- struct tblentry *cmdp;
- struct tblentry **pp;
-
- p = name;
- hashval = *p << 4;
- while (*p)
- hashval += *p++;
- hashval &= 0x7FFF;
- pp = &cmdtable[hashval % CMDTABLESIZE];
- for (cmdp = *pp ; cmdp ; cmdp = cmdp->next) {
- if (equal(cmdp->cmdname, name))
- break;
- pp = &cmdp->next;
- }
- if (add && cmdp == NULL) {
- INTOFF;
- cmdp = *pp = ckmalloc(sizeof (struct tblentry) - ARB
- + strlen(name) + 1);
- cmdp->next = NULL;
- cmdp->cmdtype = CMDUNKNOWN;
- cmdp->rehash = 0;
- strcpy(cmdp->cmdname, name);
- INTON;
- }
- lastcmdentry = pp;
- return cmdp;
-}
-
-/*
- * Delete the command entry returned on the last lookup.
- */
-
-STATIC void
-delete_cmd_entry(void)
-{
- struct tblentry *cmdp;
-
- INTOFF;
- cmdp = *lastcmdentry;
- *lastcmdentry = cmdp->next;
- ckfree(cmdp);
- INTON;
-}
-
-
-
-#ifdef notdef
-void
-getcmdentry(char *name, struct cmdentry *entry)
-{
- struct tblentry *cmdp = cmdlookup(name, 0);
-
- if (cmdp) {
- entry->u = cmdp->param;
- entry->cmdtype = cmdp->cmdtype;
- } else {
- entry->cmdtype = CMDUNKNOWN;
- entry->u.index = 0;
- }
-}
-#endif
-
-
-/*
- * Add a new command entry, replacing any existing command entry for
- * the same name - except special builtins.
- */
-
-STATIC void
-addcmdentry(char *name, struct cmdentry *entry)
-{
- struct tblentry *cmdp;
-
- INTOFF;
- cmdp = cmdlookup(name, 1);
- if (cmdp->cmdtype != CMDSPLBLTIN) {
- if (cmdp->cmdtype == CMDFUNCTION) {
- freefunc(cmdp->param.func);
- }
- cmdp->cmdtype = entry->cmdtype;
- cmdp->param = entry->u;
- }
- INTON;
-}
-
-
-/*
- * Define a shell function.
- */
-
-void
-defun(char *name, union node *func)
-{
- struct cmdentry entry;
-
- INTOFF;
- entry.cmdtype = CMDFUNCTION;
- entry.u.func = copyfunc(func);
- addcmdentry(name, &entry);
- INTON;
-}
-
-
-/*
- * Delete a function if it exists.
- */
-
-int
-unsetfunc(char *name)
-{
- struct tblentry *cmdp;
-
- if ((cmdp = cmdlookup(name, 0)) != NULL &&
- cmdp->cmdtype == CMDFUNCTION) {
- freefunc(cmdp->param.func);
- delete_cmd_entry();
- return (0);
- }
- return (1);
-}
-
-/*
- * Locate and print what a word is...
- * also used for 'command -[v|V]'
- */
-
-int
-typecmd(int argc, char **argv)
-{
- struct cmdentry entry;
- struct tblentry *cmdp;
- char * const *pp;
- struct alias *ap;
- int err = 0;
- char *arg;
- int c;
- int V_flag = 0;
- int v_flag = 0;
- int p_flag = 0;
-
- while ((c = nextopt("vVp")) != 0) {
- switch (c) {
- case 'v': v_flag = 1; break;
- case 'V': V_flag = 1; break;
- case 'p': p_flag = 1; break;
- }
- }
-
- if (p_flag && (v_flag || V_flag))
- error("cannot specify -p with -v or -V");
-
- while ((arg = *argptr++)) {
- if (!v_flag)
- out1str(arg);
- /* First look at the keywords */
- for (pp = parsekwd; *pp; pp++)
- if (**pp == *arg && equal(*pp, arg))
- break;
-
- if (*pp) {
- if (v_flag)
- err = 1;
- else
- out1str(" is a shell keyword\n");
- continue;
- }
-
- /* Then look at the aliases */
- if ((ap = lookupalias(arg, 1)) != NULL) {
- if (!v_flag)
- out1fmt(" is an alias for \n");
- out1fmt("%s\n", ap->val);
- continue;
- }
-
- /* Then check if it is a tracked alias */
- if ((cmdp = cmdlookup(arg, 0)) != NULL) {
- entry.cmdtype = cmdp->cmdtype;
- entry.u = cmdp->param;
- } else {
- /* Finally use brute force */
- find_command(arg, &entry, DO_ABS, pathval());
- }
-
- switch (entry.cmdtype) {
- case CMDNORMAL: {
- if (strchr(arg, '/') == NULL) {
- const char *path = pathval();
- char *name;
- int j = entry.u.index;
- do {
- name = padvance(&path, arg);
- stunalloc(name);
- } while (--j >= 0);
- if (!v_flag)
- out1fmt(" is%s ",
- cmdp ? " a tracked alias for" : "");
- out1fmt("%s\n", name);
- } else {
- if (access(arg, X_OK) == 0) {
- if (!v_flag)
- out1fmt(" is ");
- out1fmt("%s\n", arg);
- } else {
- if (!v_flag)
- out1fmt(": %s\n",
- strerror(errno));
- else
- err = 126;
- }
- }
- break;
- }
- case CMDFUNCTION:
- if (!v_flag)
- out1str(" is a shell function\n");
- else
- out1fmt("%s\n", arg);
- break;
-
- case CMDBUILTIN:
- if (!v_flag)
- out1str(" is a shell builtin\n");
- else
- out1fmt("%s\n", arg);
- break;
-
- case CMDSPLBLTIN:
- if (!v_flag)
- out1str(" is a special shell builtin\n");
- else
- out1fmt("%s\n", arg);
- break;
-
- default:
- if (!v_flag)
- out1str(": not found\n");
- err = 127;
- break;
- }
- }
- return err;
-}
diff --git a/sh/exec.h b/sh/exec.h
deleted file mode 100644
index 26fd09c..0000000
--- a/sh/exec.h
+++ /dev/null
@@ -1,79 +0,0 @@
-/* $NetBSD: exec.h,v 1.21 2003/08/07 09:05:31 agc Exp $ */
-
-/*-
- * Copyright (c) 1991, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Kenneth Almquist.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * @(#)exec.h 8.3 (Berkeley) 6/8/95
- */
-
-/* values of cmdtype */
-#define CMDUNKNOWN -1 /* no entry in table for command */
-#define CMDNORMAL 0 /* command is an executable program */
-#define CMDFUNCTION 1 /* command is a shell function */
-#define CMDBUILTIN 2 /* command is a shell builtin */
-#define CMDSPLBLTIN 3 /* command is a special shell builtin */
-
-
-struct cmdentry {
- int cmdtype;
- union param {
- int index;
- int (*bltin)(int, char**);
- union node *func;
- } u;
-};
-
-
-/* action to find_command() */
-#define DO_ERR 0x01 /* prints errors */
-#define DO_ABS 0x02 /* checks absolute paths */
-#define DO_NOFUNC 0x04 /* don't return shell functions, for command */
-#define DO_ALTPATH 0x08 /* using alternate path */
-#define DO_ALTBLTIN 0x20 /* %builtin in alt. path */
-
-extern const char *pathopt; /* set by padvance */
-
-void shellexec(char **, char **, const char *, int, int)
- __attribute__((__noreturn__));
-char *padvance(const char **, const char *);
-int hashcmd(int, char **);
-void find_command(char *, struct cmdentry *, int, const char *);
-int (*find_builtin(char *))(int, char **);
-int (*find_splbltin(char *))(int, char **);
-void hashcd(void);
-void changepath(const char *);
-void deletefuncs(void);
-void getcmdentry(char *, struct cmdentry *);
-void addcmdentry(char *, struct cmdentry *);
-void defun(char *, union node *);
-int unsetfunc(char *);
-int typecmd(int, char **);
-void hash_special_builtins(void);
diff --git a/sh/expand.c b/sh/expand.c
deleted file mode 100644
index d3462fc..0000000
--- a/sh/expand.c
+++ /dev/null
@@ -1,1559 +0,0 @@
-/* $NetBSD: expand.c,v 1.68.2.2 2005/04/07 11:37:39 tron Exp $ */
-
-/*-
- * Copyright (c) 1991, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Kenneth Almquist.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <sys/cdefs.h>
-#ifndef lint
-#if 0
-static char sccsid[] = "@(#)expand.c 8.5 (Berkeley) 5/15/95";
-#else
-__RCSID("$NetBSD: expand.c,v 1.68.2.2 2005/04/07 11:37:39 tron Exp $");
-#endif
-#endif /* not lint */
-
-#include <sys/types.h>
-#include <sys/time.h>
-#include <sys/stat.h>
-#include <errno.h>
-#include <dirent.h>
-#include <unistd.h>
-#include <stdlib.h>
-#include <stdio.h>
-
-/*
- * Routines to expand arguments to commands. We have to deal with
- * backquotes, shell variables, and file metacharacters.
- */
-
-#include "shell.h"
-#include "main.h"
-#include "nodes.h"
-#include "eval.h"
-#include "expand.h"
-#include "syntax.h"
-#include "parser.h"
-#include "jobs.h"
-#include "options.h"
-#include "var.h"
-#include "input.h"
-#include "output.h"
-#include "memalloc.h"
-#include "error.h"
-#include "mystring.h"
-#include "show.h"
-
-/*
- * Structure specifying which parts of the string should be searched
- * for IFS characters.
- */
-
-struct ifsregion {
- struct ifsregion *next; /* next region in list */
- int begoff; /* offset of start of region */
- int endoff; /* offset of end of region */
- int inquotes; /* search for nul bytes only */
-};
-
-
-char *expdest; /* output of current string */
-struct nodelist *argbackq; /* list of back quote expressions */
-struct ifsregion ifsfirst; /* first struct in list of ifs regions */
-struct ifsregion *ifslastp; /* last struct in list */
-struct arglist exparg; /* holds expanded arg list */
-
-STATIC void argstr(char *, int);
-STATIC char *exptilde(char *, int);
-STATIC void expbackq(union node *, int, int);
-STATIC int subevalvar(char *, char *, int, int, int, int);
-STATIC char *evalvar(char *, int);
-STATIC int varisset(char *, int);
-STATIC void varvalue(char *, int, int, int);
-STATIC void recordregion(int, int, int);
-STATIC void removerecordregions(int);
-STATIC void ifsbreakup(char *, struct arglist *);
-STATIC void ifsfree(void);
-STATIC void expandmeta(struct strlist *, int);
-STATIC void expmeta(char *, char *);
-STATIC void addfname(char *);
-STATIC struct strlist *expsort(struct strlist *);
-STATIC struct strlist *msort(struct strlist *, int);
-STATIC int pmatch(char *, char *, int);
-STATIC char *cvtnum(int, char *);
-
-/*
- * Expand shell variables and backquotes inside a here document.
- */
-
-void
-expandhere(union node *arg, int fd)
-{
- herefd = fd;
- expandarg(arg, (struct arglist *)NULL, 0);
- xwrite(fd, stackblock(), expdest - stackblock());
-}
-
-
-/*
- * Perform variable substitution and command substitution on an argument,
- * placing the resulting list of arguments in arglist. If EXP_FULL is true,
- * perform splitting and file name expansion. When arglist is NULL, perform
- * here document expansion.
- */
-
-void
-expandarg(union node *arg, struct arglist *arglist, int flag)
-{
- struct strlist *sp;
- char *p;
-
- argbackq = arg->narg.backquote;
- STARTSTACKSTR(expdest);
- ifsfirst.next = NULL;
- ifslastp = NULL;
- argstr(arg->narg.text, flag);
- if (arglist == NULL) {
- return; /* here document expanded */
- }
- STPUTC('\0', expdest);
- p = grabstackstr(expdest);
- exparg.lastp = &exparg.list;
- /*
- * TODO - EXP_REDIR
- */
- if (flag & EXP_FULL) {
- ifsbreakup(p, &exparg);
- *exparg.lastp = NULL;
- exparg.lastp = &exparg.list;
- expandmeta(exparg.list, flag);
- } else {
- if (flag & EXP_REDIR) /*XXX - for now, just remove escapes */
- rmescapes(p);
- sp = (struct strlist *)stalloc(sizeof (struct strlist));
- sp->text = p;
- *exparg.lastp = sp;
- exparg.lastp = &sp->next;
- }
- ifsfree();
- *exparg.lastp = NULL;
- if (exparg.list) {
- *arglist->lastp = exparg.list;
- arglist->lastp = exparg.lastp;
- }
-}
-
-
-
-/*
- * Perform variable and command substitution.
- * If EXP_FULL is set, output CTLESC characters to allow for further processing.
- * Otherwise treat $@ like $* since no splitting will be performed.
- */
-
-STATIC void
-argstr(char *p, int flag)
-{
- char c;
- int quotes = flag & (EXP_FULL | EXP_CASE); /* do CTLESC */
- int firsteq = 1;
- const char *ifs = 0;
- int ifs_split = EXP_IFS_SPLIT;
-
- if (flag & EXP_IFS_SPLIT)
- ifs = ifsset() ? ifsval() : " \t\n";
-
- if (*p == '~' && (flag & (EXP_TILDE | EXP_VARTILDE)))
- p = exptilde(p, flag);
- for (;;) {
- switch (c = *p++) {
- case '\0':
- case CTLENDVAR: /* end of expanding yyy in ${xxx-yyy} */
- return;
- case CTLQUOTEMARK:
- /* "$@" syntax adherence hack */
- if (p[0] == CTLVAR && p[2] == '@' && p[3] == '=')
- break;
- if ((flag & EXP_FULL) != 0)
- STPUTC(c, expdest);
- ifs_split = 0;
- break;
- case CTLQUOTEEND:
- ifs_split = EXP_IFS_SPLIT;
- break;
- case CTLESC:
- if (quotes)
- STPUTC(c, expdest);
- c = *p++;
- STPUTC(c, expdest);
- break;
- case CTLVAR:
- p = evalvar(p, (flag & ~EXP_IFS_SPLIT) | (flag & ifs_split));
- break;
- case CTLBACKQ:
- case CTLBACKQ|CTLQUOTE:
- expbackq(argbackq->n, c & CTLQUOTE, flag);
- argbackq = argbackq->next;
- break;
- case CTLENDARI:
- expari(flag);
- break;
- case ':':
- case '=':
- /*
- * sort of a hack - expand tildes in variable
- * assignments (after the first '=' and after ':'s).
- */
- STPUTC(c, expdest);
- if (flag & EXP_VARTILDE && *p == '~') {
- if (c == '=') {
- if (firsteq)
- firsteq = 0;
- else
- break;
- }
- p = exptilde(p, flag);
- }
- break;
- default:
- STPUTC(c, expdest);
- if (flag & EXP_IFS_SPLIT & ifs_split && strchr(ifs, c) != NULL) {
- /* We need to get the output split here... */
- recordregion(expdest - stackblock() - 1,
- expdest - stackblock(), 0);
- }
- break;
- }
- }
-}
-
-STATIC char *
-exptilde(char *p, int flag)
-{
- char c, *startp = p;
- const char *home;
- int quotes = flag & (EXP_FULL | EXP_CASE);
-
- while ((c = *p) != '\0') {
- switch(c) {
- case CTLESC:
- return (startp);
- case CTLQUOTEMARK:
- return (startp);
- case ':':
- if (flag & EXP_VARTILDE)
- goto done;
- break;
- case '/':
- goto done;
- }
- p++;
- }
-done:
- *p = '\0';
- if (*(startp+1) == '\0') {
- if ((home = lookupvar("HOME")) == NULL)
- goto lose;
- } else
- goto lose;
- if (*home == '\0')
- goto lose;
- *p = c;
- while ((c = *home++) != '\0') {
- if (quotes && SQSYNTAX[(int)c] == CCTL)
- STPUTC(CTLESC, expdest);
- STPUTC(c, expdest);
- }
- return (p);
-lose:
- *p = c;
- return (startp);
-}
-
-
-STATIC void
-removerecordregions(int endoff)
-{
- if (ifslastp == NULL)
- return;
-
- if (ifsfirst.endoff > endoff) {
- while (ifsfirst.next != NULL) {
- struct ifsregion *ifsp;
- INTOFF;
- ifsp = ifsfirst.next->next;
- ckfree(ifsfirst.next);
- ifsfirst.next = ifsp;
- INTON;
- }
- if (ifsfirst.begoff > endoff)
- ifslastp = NULL;
- else {
- ifslastp = &ifsfirst;
- ifsfirst.endoff = endoff;
- }
- return;
- }
-
- ifslastp = &ifsfirst;
- while (ifslastp->next && ifslastp->next->begoff < endoff)
- ifslastp=ifslastp->next;
- while (ifslastp->next != NULL) {
- struct ifsregion *ifsp;
- INTOFF;
- ifsp = ifslastp->next->next;
- ckfree(ifslastp->next);
- ifslastp->next = ifsp;
- INTON;
- }
- if (ifslastp->endoff > endoff)
- ifslastp->endoff = endoff;
-}
-
-
-/*
- * Expand arithmetic expression. Backup to start of expression,
- * evaluate, place result in (backed up) result, adjust string position.
- */
-void
-expari(int flag)
-{
- char *p, *start;
- int result;
- int begoff;
- int quotes = flag & (EXP_FULL | EXP_CASE);
- int quoted;
-
- /* ifsfree(); */
-
- /*
- * This routine is slightly over-complicated for
- * efficiency. First we make sure there is
- * enough space for the result, which may be bigger
- * than the expression if we add exponentation. Next we
- * scan backwards looking for the start of arithmetic. If the
- * next previous character is a CTLESC character, then we
- * have to rescan starting from the beginning since CTLESC
- * characters have to be processed left to right.
- */
-#if INT_MAX / 1000000000 >= 10 || INT_MIN / 1000000000 <= -10
-#error "integers with more than 10 digits are not supported"
-#endif
- CHECKSTRSPACE(12 - 2, expdest);
- USTPUTC('\0', expdest);
- start = stackblock();
- p = expdest - 1;
- while (*p != CTLARI && p >= start)
- --p;
- if (*p != CTLARI)
- error("missing CTLARI (shouldn't happen)");
- if (p > start && *(p-1) == CTLESC)
- for (p = start; *p != CTLARI; p++)
- if (*p == CTLESC)
- p++;
-
- if (p[1] == '"')
- quoted=1;
- else
- quoted=0;
- begoff = p - start;
- removerecordregions(begoff);
- if (quotes)
- rmescapes(p+2);
- result = arith(p+2);
- fmtstr(p, 12, "%d", result);
-
- while (*p++)
- ;
-
- if (quoted == 0)
- recordregion(begoff, p - 1 - start, 0);
- result = expdest - p + 1;
- STADJUST(-result, expdest);
-}
-
-
-/*
- * Expand stuff in backwards quotes.
- */
-
-STATIC void
-expbackq(union node *cmd, int quoted, int flag)
-{
- struct backcmd in;
- int i;
- char buf[128];
- char *p;
- char *dest = expdest;
- struct ifsregion saveifs, *savelastp;
- struct nodelist *saveargbackq;
- char lastc;
- int startloc = dest - stackblock();
- char const *syntax = quoted? DQSYNTAX : BASESYNTAX;
- int saveherefd;
- int quotes = flag & (EXP_FULL | EXP_CASE);
-
- INTOFF;
- saveifs = ifsfirst;
- savelastp = ifslastp;
- saveargbackq = argbackq;
- saveherefd = herefd;
- herefd = -1;
- p = grabstackstr(dest);
- evalbackcmd(cmd, &in);
- ungrabstackstr(p, dest);
- ifsfirst = saveifs;
- ifslastp = savelastp;
- argbackq = saveargbackq;
- herefd = saveherefd;
-
- p = in.buf;
- lastc = '\0';
- for (;;) {
- if (--in.nleft < 0) {
- if (in.fd < 0)
- break;
- while ((i = read(in.fd, buf, sizeof buf)) < 0 && errno == EINTR);
- TRACE(("expbackq: read returns %d\n", i));
- if (i <= 0)
- break;
- p = buf;
- in.nleft = i - 1;
- }
- lastc = *p++;
- if (lastc != '\0') {
- if (quotes && syntax[(int)lastc] == CCTL)
- STPUTC(CTLESC, dest);
- STPUTC(lastc, dest);
- }
- }
-
- /* Eat all trailing newlines */
- p = stackblock() + startloc;
- while (dest > p && dest[-1] == '\n')
- STUNPUTC(dest);
-
- if (in.fd >= 0)
- close(in.fd);
- if (in.buf)
- ckfree(in.buf);
- if (in.jp)
- back_exitstatus = waitforjob(in.jp);
- if (quoted == 0)
- recordregion(startloc, dest - stackblock(), 0);
- TRACE(("evalbackq: size=%d: \"%.*s\"\n",
- (dest - stackblock()) - startloc,
- (dest - stackblock()) - startloc,
- stackblock() + startloc));
- expdest = dest;
- INTON;
-}
-
-
-
-STATIC int
-subevalvar(char *p, char *str, int strloc, int subtype, int startloc, int varflags)
-{
- char *startp;
- char *loc = NULL;
- char *q;
- int c = 0;
- int saveherefd = herefd;
- struct nodelist *saveargbackq = argbackq;
- int amount;
-
- herefd = -1;
- argstr(p, 0);
- STACKSTRNUL(expdest);
- herefd = saveherefd;
- argbackq = saveargbackq;
- startp = stackblock() + startloc;
- if (str == NULL)
- str = stackblock() + strloc;
-
- switch (subtype) {
- case VSASSIGN:
- setvar(str, startp, 0);
- amount = startp - expdest;
- STADJUST(amount, expdest);
- varflags &= ~VSNUL;
- if (c != 0)
- *loc = c;
- return 1;
-
- case VSQUESTION:
- if (*p != CTLENDVAR) {
- outfmt(&errout, "%s\n", startp);
- error((char *)NULL);
- }
- error("%.*s: parameter %snot set", p - str - 1,
- str, (varflags & VSNUL) ? "null or "
- : nullstr);
- /* NOTREACHED */
-
- case VSTRIMLEFT:
- for (loc = startp; loc < str; loc++) {
- c = *loc;
- *loc = '\0';
- if (patmatch(str, startp, varflags & VSQUOTE))
- goto recordleft;
- *loc = c;
- if ((varflags & VSQUOTE) && *loc == CTLESC)
- loc++;
- }
- return 0;
-
- case VSTRIMLEFTMAX:
- for (loc = str - 1; loc >= startp;) {
- c = *loc;
- *loc = '\0';
- if (patmatch(str, startp, varflags & VSQUOTE))
- goto recordleft;
- *loc = c;
- loc--;
- if ((varflags & VSQUOTE) && loc > startp &&
- *(loc - 1) == CTLESC) {
- for (q = startp; q < loc; q++)
- if (*q == CTLESC)
- q++;
- if (q > loc)
- loc--;
- }
- }
- return 0;
-
- case VSTRIMRIGHT:
- for (loc = str - 1; loc >= startp;) {
- if (patmatch(str, loc, varflags & VSQUOTE))
- goto recordright;
- loc--;
- if ((varflags & VSQUOTE) && loc > startp &&
- *(loc - 1) == CTLESC) {
- for (q = startp; q < loc; q++)
- if (*q == CTLESC)
- q++;
- if (q > loc)
- loc--;
- }
- }
- return 0;
-
- case VSTRIMRIGHTMAX:
- for (loc = startp; loc < str - 1; loc++) {
- if (patmatch(str, loc, varflags & VSQUOTE))
- goto recordright;
- if ((varflags & VSQUOTE) && *loc == CTLESC)
- loc++;
- }
- return 0;
-
- default:
- abort();
- }
-
-recordleft:
- *loc = c;
- amount = ((str - 1) - (loc - startp)) - expdest;
- STADJUST(amount, expdest);
- while (loc != str - 1)
- *startp++ = *loc++;
- return 1;
-
-recordright:
- amount = loc - expdest;
- STADJUST(amount, expdest);
- STPUTC('\0', expdest);
- STADJUST(-1, expdest);
- return 1;
-}
-
-
-/*
- * Expand a variable, and return a pointer to the next character in the
- * input string.
- */
-
-STATIC char *
-evalvar(char *p, int flag)
-{
- int subtype;
- int varflags;
- char *var;
- char *val;
- int patloc;
- int c;
- int set;
- int special;
- int startloc;
- int varlen;
- int apply_ifs;
- int quotes = flag & (EXP_FULL | EXP_CASE);
-
- varflags = (unsigned char)*p++;
- subtype = varflags & VSTYPE;
- var = p;
- special = !is_name(*p);
- p = strchr(p, '=') + 1;
-
-again: /* jump here after setting a variable with ${var=text} */
- if (special) {
- set = varisset(var, varflags & VSNUL);
- val = NULL;
- } else {
- val = lookupvar(var);
- if (val == NULL || ((varflags & VSNUL) && val[0] == '\0')) {
- val = NULL;
- set = 0;
- } else
- set = 1;
- }
-
- varlen = 0;
- startloc = expdest - stackblock();
-
- if (!set && uflag) {
- switch (subtype) {
- case VSNORMAL:
- case VSTRIMLEFT:
- case VSTRIMLEFTMAX:
- case VSTRIMRIGHT:
- case VSTRIMRIGHTMAX:
- case VSLENGTH:
- error("%.*s: parameter not set", p - var - 1, var);
- /* NOTREACHED */
- }
- }
-
- if (set && subtype != VSPLUS) {
- /* insert the value of the variable */
- if (special) {
- varvalue(var, varflags & VSQUOTE, subtype, flag);
- if (subtype == VSLENGTH) {
- varlen = expdest - stackblock() - startloc;
- STADJUST(-varlen, expdest);
- }
- } else {
- char const *syntax = (varflags & VSQUOTE) ? DQSYNTAX
- : BASESYNTAX;
-
- if (subtype == VSLENGTH) {
- for (;*val; val++)
- varlen++;
- } else {
- while (*val) {
- if (quotes && syntax[(int)*val] == CCTL)
- STPUTC(CTLESC, expdest);
- STPUTC(*val++, expdest);
- }
-
- }
- }
- }
-
-
- apply_ifs = ((varflags & VSQUOTE) == 0 ||
- (*var == '@' && shellparam.nparam != 1));
-
- switch (subtype) {
- case VSLENGTH:
- expdest = cvtnum(varlen, expdest);
- break;
-
- case VSNORMAL:
- break;
-
- case VSPLUS:
- set = !set;
- /* FALLTHROUGH */
- case VSMINUS:
- if (!set) {
- argstr(p, flag | (apply_ifs ? EXP_IFS_SPLIT : 0));
- /*
- * ${x-a b c} doesn't get split, but removing the
- * 'apply_ifs = 0' apparantly breaks ${1+"$@"}..
- * ${x-'a b' c} should generate 2 args.
- */
- /* We should have marked stuff already */
- apply_ifs = 0;
- }
- break;
-
- case VSTRIMLEFT:
- case VSTRIMLEFTMAX:
- case VSTRIMRIGHT:
- case VSTRIMRIGHTMAX:
- if (!set)
- break;
- /*
- * Terminate the string and start recording the pattern
- * right after it
- */
- STPUTC('\0', expdest);
- patloc = expdest - stackblock();
- if (subevalvar(p, NULL, patloc, subtype,
- startloc, varflags) == 0) {
- int amount = (expdest - stackblock() - patloc) + 1;
- STADJUST(-amount, expdest);
- }
- /* Remove any recorded regions beyond start of variable */
- removerecordregions(startloc);
- apply_ifs = 1;
- break;
-
- case VSASSIGN:
- case VSQUESTION:
- if (set)
- break;
- if (subevalvar(p, var, 0, subtype, startloc, varflags)) {
- varflags &= ~VSNUL;
- /*
- * Remove any recorded regions beyond
- * start of variable
- */
- removerecordregions(startloc);
- goto again;
- }
- apply_ifs = 0;
- break;
-
- default:
- abort();
- }
-
- if (apply_ifs)
- recordregion(startloc, expdest - stackblock(),
- varflags & VSQUOTE);
-
- if (subtype != VSNORMAL) { /* skip to end of alternative */
- int nesting = 1;
- for (;;) {
- if ((c = *p++) == CTLESC)
- p++;
- else if (c == CTLBACKQ || c == (CTLBACKQ|CTLQUOTE)) {
- if (set)
- argbackq = argbackq->next;
- } else if (c == CTLVAR) {
- if ((*p++ & VSTYPE) != VSNORMAL)
- nesting++;
- } else if (c == CTLENDVAR) {
- if (--nesting == 0)
- break;
- }
- }
- }
- return p;
-}
-
-
-
-/*
- * Test whether a specialized variable is set.
- */
-
-STATIC int
-varisset(char *name, int nulok)
-{
- if (*name == '!')
- return backgndpid != -1;
- else if (*name == '@' || *name == '*') {
- if (*shellparam.p == NULL)
- return 0;
-
- if (nulok) {
- char **av;
-
- for (av = shellparam.p; *av; av++)
- if (**av != '\0')
- return 1;
- return 0;
- }
- } else if (is_digit(*name)) {
- char *ap;
- int num = atoi(name);
-
- if (num > shellparam.nparam)
- return 0;
-
- if (num == 0)
- ap = arg0;
- else
- ap = shellparam.p[num - 1];
-
- if (nulok && (ap == NULL || *ap == '\0'))
- return 0;
- }
- return 1;
-}
-
-
-
-/*
- * Add the value of a specialized variable to the stack string.
- */
-
-STATIC void
-varvalue(char *name, int quoted, int subtype, int flag)
-{
- int num;
- char *p;
- int i;
- char sep;
- char **ap;
- char const *syntax;
-
-#define STRTODEST(p) \
- do {\
- if (flag & (EXP_FULL | EXP_CASE) && subtype != VSLENGTH) { \
- syntax = quoted? DQSYNTAX : BASESYNTAX; \
- while (*p) { \
- if (syntax[(int)*p] == CCTL) \
- STPUTC(CTLESC, expdest); \
- STPUTC(*p++, expdest); \
- } \
- } else \
- while (*p) \
- STPUTC(*p++, expdest); \
- } while (0)
-
-
- switch (*name) {
- case '$':
- num = rootpid;
- goto numvar;
- case '?':
- num = exitstatus;
- goto numvar;
- case '#':
- num = shellparam.nparam;
- goto numvar;
- case '!':
- num = backgndpid;
-numvar:
- expdest = cvtnum(num, expdest);
- break;
- case '-':
- for (i = 0; optlist[i].name; i++) {
- if (optlist[i].val)
- STPUTC(optlist[i].letter, expdest);
- }
- break;
- case '@':
- if (flag & EXP_FULL && quoted) {
- for (ap = shellparam.p ; (p = *ap++) != NULL ; ) {
- STRTODEST(p);
- if (*ap)
- STPUTC('\0', expdest);
- }
- break;
- }
- /* fall through */
- case '*':
- if (ifsset() != 0)
- sep = ifsval()[0];
- else
- sep = ' ';
- for (ap = shellparam.p ; (p = *ap++) != NULL ; ) {
- STRTODEST(p);
- if (*ap && sep)
- STPUTC(sep, expdest);
- }
- break;
- case '0':
- p = arg0;
- STRTODEST(p);
- break;
- default:
- if (is_digit(*name)) {
- num = atoi(name);
- if (num > 0 && num <= shellparam.nparam) {
- p = shellparam.p[num - 1];
- STRTODEST(p);
- }
- }
- break;
- }
-}
-
-
-
-/*
- * Record the fact that we have to scan this region of the
- * string for IFS characters.
- */
-
-STATIC void
-recordregion(int start, int end, int inquotes)
-{
- struct ifsregion *ifsp;
-
- if (ifslastp == NULL) {
- ifsp = &ifsfirst;
- } else {
- if (ifslastp->endoff == start
- && ifslastp->inquotes == inquotes) {
- /* extend previous area */
- ifslastp->endoff = end;
- return;
- }
- ifsp = (struct ifsregion *)ckmalloc(sizeof (struct ifsregion));
- ifslastp->next = ifsp;
- }
- ifslastp = ifsp;
- ifslastp->next = NULL;
- ifslastp->begoff = start;
- ifslastp->endoff = end;
- ifslastp->inquotes = inquotes;
-}
-
-
-
-/*
- * Break the argument string into pieces based upon IFS and add the
- * strings to the argument list. The regions of the string to be
- * searched for IFS characters have been stored by recordregion.
- */
-STATIC void
-ifsbreakup(char *string, struct arglist *arglist)
-{
- struct ifsregion *ifsp;
- struct strlist *sp;
- char *start;
- char *p;
- char *q;
- const char *ifs;
- const char *ifsspc;
- int inquotes;
-
- start = string;
- ifsspc = NULL;
- inquotes = 0;
-
- if (ifslastp == NULL) {
- /* Return entire argument, IFS doesn't apply to any of it */
- sp = (struct strlist *)stalloc(sizeof *sp);
- sp->text = start;
- *arglist->lastp = sp;
- arglist->lastp = &sp->next;
- return;
- }
-
- ifs = ifsset() ? ifsval() : " \t\n";
-
- for (ifsp = &ifsfirst; ifsp != NULL; ifsp = ifsp->next) {
- p = string + ifsp->begoff;
- inquotes = ifsp->inquotes;
- ifsspc = NULL;
- while (p < string + ifsp->endoff) {
- q = p;
- if (*p == CTLESC)
- p++;
- if (inquotes) {
- /* Only NULs (probably from "$@") end args */
- if (*p != 0) {
- p++;
- continue;
- }
- } else {
- if (!strchr(ifs, *p)) {
- p++;
- continue;
- }
- ifsspc = strchr(" \t\n", *p);
-
- /* Ignore IFS whitespace at start */
- if (q == start && ifsspc != NULL) {
- p++;
- start = p;
- continue;
- }
- }
-
- /* Save this argument... */
- *q = '\0';
- sp = (struct strlist *)stalloc(sizeof *sp);
- sp->text = start;
- *arglist->lastp = sp;
- arglist->lastp = &sp->next;
- p++;
-
- if (ifsspc != NULL) {
- /* Ignore further trailing IFS whitespace */
- for (; p < string + ifsp->endoff; p++) {
- q = p;
- if (*p == CTLESC)
- p++;
- if (strchr(ifs, *p) == NULL) {
- p = q;
- break;
- }
- if (strchr(" \t\n", *p) == NULL) {
- p++;
- break;
- }
- }
- }
- start = p;
- }
- }
-
- /*
- * Save anything left as an argument.
- * Traditionally we have treated 'IFS=':'; set -- x$IFS' as
- * generating 2 arguments, the second of which is empty.
- * Some recent clarification of the Posix spec say that it
- * should only generate one....
- */
- if (*start /* || (!ifsspc && start > string) */) {
- sp = (struct strlist *)stalloc(sizeof *sp);
- sp->text = start;
- *arglist->lastp = sp;
- arglist->lastp = &sp->next;
- }
-}
-
-STATIC void
-ifsfree(void)
-{
- while (ifsfirst.next != NULL) {
- struct ifsregion *ifsp;
- INTOFF;
- ifsp = ifsfirst.next->next;
- ckfree(ifsfirst.next);
- ifsfirst.next = ifsp;
- INTON;
- }
- ifslastp = NULL;
- ifsfirst.next = NULL;
-}
-
-
-
-/*
- * Expand shell metacharacters. At this point, the only control characters
- * should be escapes. The results are stored in the list exparg.
- */
-
-char *expdir;
-
-
-STATIC void
-expandmeta(struct strlist *str, int flag)
-{
- char *p;
- struct strlist **savelastp;
- struct strlist *sp;
- char c;
- /* TODO - EXP_REDIR */
-
- while (str) {
- if (fflag)
- goto nometa;
- p = str->text;
- for (;;) { /* fast check for meta chars */
- if ((c = *p++) == '\0')
- goto nometa;
- if (c == '*' || c == '?' || c == '[' || c == '!')
- break;
- }
- savelastp = exparg.lastp;
- INTOFF;
- if (expdir == NULL) {
- int i = strlen(str->text);
- expdir = ckmalloc(i < 2048 ? 2048 : i); /* XXX */
- }
-
- expmeta(expdir, str->text);
- ckfree(expdir);
- expdir = NULL;
- INTON;
- if (exparg.lastp == savelastp) {
- /*
- * no matches
- */
-nometa:
- *exparg.lastp = str;
- rmescapes(str->text);
- exparg.lastp = &str->next;
- } else {
- *exparg.lastp = NULL;
- *savelastp = sp = expsort(*savelastp);
- while (sp->next != NULL)
- sp = sp->next;
- exparg.lastp = &sp->next;
- }
- str = str->next;
- }
-}
-
-
-/*
- * Do metacharacter (i.e. *, ?, [...]) expansion.
- */
-
-STATIC void
-expmeta(char *enddir, char *name)
-{
- char *p;
- const char *cp;
- char *q;
- char *start;
- char *endname;
- int metaflag;
- struct stat statb;
- DIR *dirp;
- struct dirent *dp;
- int atend;
- int matchdot;
-
- metaflag = 0;
- start = name;
- for (p = name ; ; p++) {
- if (*p == '*' || *p == '?')
- metaflag = 1;
- else if (*p == '[') {
- q = p + 1;
- if (*q == '!')
- q++;
- for (;;) {
- while (*q == CTLQUOTEMARK)
- q++;
- if (*q == CTLESC)
- q++;
- if (*q == '/' || *q == '\0')
- break;
- if (*++q == ']') {
- metaflag = 1;
- break;
- }
- }
- } else if (*p == '!' && p[1] == '!' && (p == name || p[-1] == '/')) {
- metaflag = 1;
- } else if (*p == '\0')
- break;
- else if (*p == CTLQUOTEMARK)
- continue;
- else if (*p == CTLESC)
- p++;
- if (*p == '/') {
- if (metaflag)
- break;
- start = p + 1;
- }
- }
- if (metaflag == 0) { /* we've reached the end of the file name */
- if (enddir != expdir)
- metaflag++;
- for (p = name ; ; p++) {
- if (*p == CTLQUOTEMARK)
- continue;
- if (*p == CTLESC)
- p++;
- *enddir++ = *p;
- if (*p == '\0')
- break;
- }
- if (metaflag == 0 || lstat(expdir, &statb) >= 0)
- addfname(expdir);
- return;
- }
- endname = p;
- if (start != name) {
- p = name;
- while (p < start) {
- while (*p == CTLQUOTEMARK)
- p++;
- if (*p == CTLESC)
- p++;
- *enddir++ = *p++;
- }
- }
- if (enddir == expdir) {
- cp = ".";
- } else if (enddir == expdir + 1 && *expdir == '/') {
- cp = "/";
- } else {
- cp = expdir;
- enddir[-1] = '\0';
- }
- if ((dirp = opendir(cp)) == NULL)
- return;
- if (enddir != expdir)
- enddir[-1] = '/';
- if (*endname == 0) {
- atend = 1;
- } else {
- atend = 0;
- *endname++ = '\0';
- }
- matchdot = 0;
- p = start;
- while (*p == CTLQUOTEMARK)
- p++;
- if (*p == CTLESC)
- p++;
- if (*p == '.')
- matchdot++;
- while (! int_pending() && (dp = readdir(dirp)) != NULL) {
- if (dp->d_name[0] == '.' && ! matchdot)
- continue;
- if (patmatch(start, dp->d_name, 0)) {
- if (atend) {
- scopy(dp->d_name, enddir);
- addfname(expdir);
- } else {
- for (p = enddir, cp = dp->d_name;
- (*p++ = *cp++) != '\0';)
- continue;
- p[-1] = '/';
- expmeta(p, endname);
- }
- }
- }
- closedir(dirp);
- if (! atend)
- endname[-1] = '/';
-}
-
-
-/*
- * Add a file name to the list.
- */
-
-STATIC void
-addfname(char *name)
-{
- char *p;
- struct strlist *sp;
-
- p = stalloc(strlen(name) + 1);
- scopy(name, p);
- sp = (struct strlist *)stalloc(sizeof *sp);
- sp->text = p;
- *exparg.lastp = sp;
- exparg.lastp = &sp->next;
-}
-
-
-/*
- * Sort the results of file name expansion. It calculates the number of
- * strings to sort and then calls msort (short for merge sort) to do the
- * work.
- */
-
-STATIC struct strlist *
-expsort(struct strlist *str)
-{
- int len;
- struct strlist *sp;
-
- len = 0;
- for (sp = str ; sp ; sp = sp->next)
- len++;
- return msort(str, len);
-}
-
-
-STATIC struct strlist *
-msort(struct strlist *list, int len)
-{
- struct strlist *p, *q = NULL;
- struct strlist **lpp;
- int half;
- int n;
-
- if (len <= 1)
- return list;
- half = len >> 1;
- p = list;
- for (n = half ; --n >= 0 ; ) {
- q = p;
- p = p->next;
- }
- q->next = NULL; /* terminate first half of list */
- q = msort(list, half); /* sort first half of list */
- p = msort(p, len - half); /* sort second half */
- lpp = &list;
- for (;;) {
- if (strcmp(p->text, q->text) < 0) {
- *lpp = p;
- lpp = &p->next;
- if ((p = *lpp) == NULL) {
- *lpp = q;
- break;
- }
- } else {
- *lpp = q;
- lpp = &q->next;
- if ((q = *lpp) == NULL) {
- *lpp = p;
- break;
- }
- }
- }
- return list;
-}
-
-
-
-/*
- * Returns true if the pattern matches the string.
- */
-
-int
-patmatch(char *pattern, char *string, int squoted)
-{
-#ifdef notdef
- if (pattern[0] == '!' && pattern[1] == '!')
- return 1 - pmatch(pattern + 2, string);
- else
-#endif
- return pmatch(pattern, string, squoted);
-}
-
-
-STATIC int
-pmatch(char *pattern, char *string, int squoted)
-{
- char *p, *q;
- char c;
-
- p = pattern;
- q = string;
- for (;;) {
- switch (c = *p++) {
- case '\0':
- goto breakloop;
- case CTLESC:
- if (squoted && *q == CTLESC)
- q++;
- if (*q++ != *p++)
- return 0;
- break;
- case CTLQUOTEMARK:
- continue;
- case '?':
- if (squoted && *q == CTLESC)
- q++;
- if (*q++ == '\0')
- return 0;
- break;
- case '*':
- c = *p;
- while (c == CTLQUOTEMARK || c == '*')
- c = *++p;
- if (c != CTLESC && c != CTLQUOTEMARK &&
- c != '?' && c != '*' && c != '[') {
- while (*q != c) {
- if (squoted && *q == CTLESC &&
- q[1] == c)
- break;
- if (*q == '\0')
- return 0;
- if (squoted && *q == CTLESC)
- q++;
- q++;
- }
- }
- do {
- if (pmatch(p, q, squoted))
- return 1;
- if (squoted && *q == CTLESC)
- q++;
- } while (*q++ != '\0');
- return 0;
- case '[': {
- char *endp;
- int invert, found;
- char chr;
-
- endp = p;
- if (*endp == '!')
- endp++;
- for (;;) {
- while (*endp == CTLQUOTEMARK)
- endp++;
- if (*endp == '\0')
- goto dft; /* no matching ] */
- if (*endp == CTLESC)
- endp++;
- if (*++endp == ']')
- break;
- }
- invert = 0;
- if (*p == '!') {
- invert++;
- p++;
- }
- found = 0;
- chr = *q++;
- if (squoted && chr == CTLESC)
- chr = *q++;
- if (chr == '\0')
- return 0;
- c = *p++;
- do {
- if (c == CTLQUOTEMARK)
- continue;
- if (c == CTLESC)
- c = *p++;
- if (*p == '-' && p[1] != ']') {
- p++;
- while (*p == CTLQUOTEMARK)
- p++;
- if (*p == CTLESC)
- p++;
- if (chr >= c && chr <= *p)
- found = 1;
- p++;
- } else {
- if (chr == c)
- found = 1;
- }
- } while ((c = *p++) != ']');
- if (found == invert)
- return 0;
- break;
- }
-dft: default:
- if (squoted && *q == CTLESC)
- q++;
- if (*q++ != c)
- return 0;
- break;
- }
- }
-breakloop:
- if (*q != '\0')
- return 0;
- return 1;
-}
-
-
-
-/*
- * Remove any CTLESC characters from a string.
- */
-
-void
-rmescapes(char *str)
-{
- char *p, *q;
-
- p = str;
- while (*p != CTLESC && *p != CTLQUOTEMARK) {
- if (*p++ == '\0')
- return;
- }
- q = p;
- while (*p) {
- if (*p == CTLQUOTEMARK) {
- p++;
- continue;
- }
- if (*p == CTLESC)
- p++;
- *q++ = *p++;
- }
- *q = '\0';
-}
-
-
-
-/*
- * See if a pattern matches in a case statement.
- */
-
-int
-casematch(union node *pattern, char *val)
-{
- struct stackmark smark;
- int result;
- char *p;
-
- setstackmark(&smark);
- argbackq = pattern->narg.backquote;
- STARTSTACKSTR(expdest);
- ifslastp = NULL;
- argstr(pattern->narg.text, EXP_TILDE | EXP_CASE);
- STPUTC('\0', expdest);
- p = grabstackstr(expdest);
- result = patmatch(p, val, 0);
- popstackmark(&smark);
- return result;
-}
-
-/*
- * Our own itoa().
- */
-
-STATIC char *
-cvtnum(int num, char *buf)
-{
- char temp[32];
- int neg = num < 0;
- char *p = temp + 31;
-
- temp[31] = '\0';
-
- do {
- *--p = num % 10 + '0';
- } while ((num /= 10) != 0);
-
- if (neg)
- *--p = '-';
-
- while (*p)
- STPUTC(*p++, buf);
- return buf;
-}
-
-/*
- * Do most of the work for wordexp(3).
- */
-
-int
-wordexpcmd(int argc, char **argv)
-{
- size_t len;
- int i;
-
- out1fmt("%d", argc - 1);
- out1c('\0');
- for (i = 1, len = 0; i < argc; i++)
- len += strlen(argv[i]);
- out1fmt("%zd", len);
- out1c('\0');
- for (i = 1; i < argc; i++) {
- out1str(argv[i]);
- out1c('\0');
- }
- return (0);
-}
diff --git a/sh/expand.h b/sh/expand.h
deleted file mode 100644
index 1ea876d..0000000
--- a/sh/expand.h
+++ /dev/null
@@ -1,72 +0,0 @@
-/* $NetBSD: expand.h,v 1.16 2004/07/13 15:05:59 seb Exp $ */
-
-/*-
- * Copyright (c) 1991, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Kenneth Almquist.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * @(#)expand.h 8.2 (Berkeley) 5/4/95
- */
-
-struct strlist {
- struct strlist *next;
- char *text;
-};
-
-
-struct arglist {
- struct strlist *list;
- struct strlist **lastp;
-};
-
-/*
- * expandarg() flags
- */
-#define EXP_FULL 0x1 /* perform word splitting & file globbing */
-#define EXP_TILDE 0x2 /* do normal tilde expansion */
-#define EXP_VARTILDE 0x4 /* expand tildes in an assignment */
-#define EXP_REDIR 0x8 /* file glob for a redirection (1 match only) */
-#define EXP_CASE 0x10 /* keeps quotes around for CASE pattern */
-#define EXP_IFS_SPLIT 0x20 /* need to record arguments for ifs breakup */
-
-
-union node;
-void expandhere(union node *, int);
-void expandarg(union node *, struct arglist *, int);
-void expari(int);
-int patmatch(char *, char *, int);
-void rmescapes(char *);
-int casematch(union node *, char *);
-int wordexpcmd(int, char **);
-
-/* From arith.y */
-int arith(const char *);
-int expcmd(int , char **);
-void arith_lex_reset(void);
-int yylex(void);
diff --git a/sh/funcs/cmv b/sh/funcs/cmv
deleted file mode 100644
index 667f846..0000000
--- a/sh/funcs/cmv
+++ /dev/null
@@ -1,50 +0,0 @@
-# $NetBSD: cmv,v 1.7 1995/05/11 21:31:05 christos Exp $
-# Copyright (c) 1991, 1993
-# The Regents of the University of California. All rights reserved.
-#
-# This code is derived from software contributed to Berkeley by
-# Kenneth Almquist.
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions
-# are met:
-# 1. Redistributions of source code must retain the above copyright
-# notice, this list of conditions and the following disclaimer.
-# 2. Redistributions in binary form must reproduce the above copyright
-# notice, this list of conditions and the following disclaimer in the
-# documentation and/or other materials provided with the distribution.
-# 3. All advertising materials mentioning features or use of this software
-# must display the following acknowledgement:
-# This product includes software developed by the University of
-# California, Berkeley and its contributors.
-# 4. Neither the name of the University nor the names of its contributors
-# may be used to endorse or promote products derived from this software
-# without specific prior written permission.
-#
-# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
-# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
-# ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
-# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
-# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
-# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
-# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
-# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
-# SUCH DAMAGE.
-#
-# @(#)cmv 8.2 (Berkeley) 5/4/95
-
-# Conditional move--don't replace an existing file.
-
-cmv() {
- if test $# != 2
- then echo "cmv: arg count"
- return 2
- fi
- if test -f "$2" -o -w "$2"
- then echo "$2 exists"
- return 2
- fi
- /bin/mv "$1" "$2"
-}
diff --git a/sh/funcs/dirs b/sh/funcs/dirs
deleted file mode 100644
index 68bb317..0000000
--- a/sh/funcs/dirs
+++ /dev/null
@@ -1,74 +0,0 @@
-# $NetBSD: dirs,v 1.7 1995/05/11 21:31:08 christos Exp $
-# Copyright (c) 1991, 1993
-# The Regents of the University of California. All rights reserved.
-#
-# This code is derived from software contributed to Berkeley by
-# Kenneth Almquist.
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions
-# are met:
-# 1. Redistributions of source code must retain the above copyright
-# notice, this list of conditions and the following disclaimer.
-# 2. Redistributions in binary form must reproduce the above copyright
-# notice, this list of conditions and the following disclaimer in the
-# documentation and/or other materials provided with the distribution.
-# 3. All advertising materials mentioning features or use of this software
-# must display the following acknowledgement:
-# This product includes software developed by the University of
-# California, Berkeley and its contributors.
-# 4. Neither the name of the University nor the names of its contributors
-# may be used to endorse or promote products derived from this software
-# without specific prior written permission.
-#
-# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
-# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
-# ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
-# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
-# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
-# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
-# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
-# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
-# SUCH DAMAGE.
-#
-# @(#)dirs 8.2 (Berkeley) 5/4/95
-
-# pushd, popd, and dirs --- written by Chris Bertin
-# Pixel Computer Inc. ...!wjh12!pixel!pixutl!chris
-# as modified by Patrick Elam of GTRI and Kenneth Almquist at UW
-
-pushd () {
- SAVE=`pwd`
- if [ "$1" = "" ]
- then if [ "$DSTACK" = "" ]
- then echo "pushd: directory stack empty."
- return 1
- fi
- set $DSTACK
- cd $1 || return
- shift 1
- DSTACK="$*"
- else cd $1 > /dev/null || return
- fi
- DSTACK="$SAVE $DSTACK"
- dirs
-}
-
-popd () {
- if [ "$DSTACK" = "" ]
- then echo "popd: directory stack empty."
- return 1
- fi
- set $DSTACK
- cd $1
- shift
- DSTACK=$*
- dirs
-}
-
-dirs () {
- echo "`pwd` $DSTACK"
- return 0
-}
diff --git a/sh/funcs/kill b/sh/funcs/kill
deleted file mode 100644
index 75b0180..0000000
--- a/sh/funcs/kill
+++ /dev/null
@@ -1,50 +0,0 @@
-# $NetBSD: kill,v 1.7 1995/05/11 21:31:10 christos Exp $
-# Copyright (c) 1991, 1993
-# The Regents of the University of California. All rights reserved.
-#
-# This code is derived from software contributed to Berkeley by
-# Kenneth Almquist.
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions
-# are met:
-# 1. Redistributions of source code must retain the above copyright
-# notice, this list of conditions and the following disclaimer.
-# 2. Redistributions in binary form must reproduce the above copyright
-# notice, this list of conditions and the following disclaimer in the
-# documentation and/or other materials provided with the distribution.
-# 3. All advertising materials mentioning features or use of this software
-# must display the following acknowledgement:
-# This product includes software developed by the University of
-# California, Berkeley and its contributors.
-# 4. Neither the name of the University nor the names of its contributors
-# may be used to endorse or promote products derived from this software
-# without specific prior written permission.
-#
-# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
-# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
-# ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
-# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
-# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
-# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
-# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
-# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
-# SUCH DAMAGE.
-#
-# @(#)kill 8.2 (Berkeley) 5/4/95
-
-# Convert job names to process ids and then run /bin/kill.
-
-kill() {
- local args x
- args=
- for x in "$@"
- do case $x in
- %*) x=`jobid "$x"` ;;
- esac
- args="$args $x"
- done
- /bin/kill $args
-}
diff --git a/sh/funcs/login b/sh/funcs/login
deleted file mode 100644
index 7ae08b2..0000000
--- a/sh/funcs/login
+++ /dev/null
@@ -1,39 +0,0 @@
-# $NetBSD: login,v 1.7 1995/05/11 21:31:11 christos Exp $
-# Copyright (c) 1991, 1993
-# The Regents of the University of California. All rights reserved.
-#
-# This code is derived from software contributed to Berkeley by
-# Kenneth Almquist.
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions
-# are met:
-# 1. Redistributions of source code must retain the above copyright
-# notice, this list of conditions and the following disclaimer.
-# 2. Redistributions in binary form must reproduce the above copyright
-# notice, this list of conditions and the following disclaimer in the
-# documentation and/or other materials provided with the distribution.
-# 3. All advertising materials mentioning features or use of this software
-# must display the following acknowledgement:
-# This product includes software developed by the University of
-# California, Berkeley and its contributors.
-# 4. Neither the name of the University nor the names of its contributors
-# may be used to endorse or promote products derived from this software
-# without specific prior written permission.
-#
-# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
-# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
-# ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
-# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
-# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
-# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
-# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
-# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
-# SUCH DAMAGE.
-#
-# @(#)login 8.2 (Berkeley) 5/4/95
-
-# replaces the login builtin in the BSD shell
-login () exec login "$@"
diff --git a/sh/funcs/newgrp b/sh/funcs/newgrp
deleted file mode 100644
index 796a4f1..0000000
--- a/sh/funcs/newgrp
+++ /dev/null
@@ -1,38 +0,0 @@
-# $NetBSD: newgrp,v 1.7 1995/05/11 21:31:12 christos Exp $
-# Copyright (c) 1991, 1993
-# The Regents of the University of California. All rights reserved.
-#
-# This code is derived from software contributed to Berkeley by
-# Kenneth Almquist.
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions
-# are met:
-# 1. Redistributions of source code must retain the above copyright
-# notice, this list of conditions and the following disclaimer.
-# 2. Redistributions in binary form must reproduce the above copyright
-# notice, this list of conditions and the following disclaimer in the
-# documentation and/or other materials provided with the distribution.
-# 3. All advertising materials mentioning features or use of this software
-# must display the following acknowledgement:
-# This product includes software developed by the University of
-# California, Berkeley and its contributors.
-# 4. Neither the name of the University nor the names of its contributors
-# may be used to endorse or promote products derived from this software
-# without specific prior written permission.
-#
-# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
-# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
-# ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
-# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
-# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
-# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
-# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
-# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
-# SUCH DAMAGE.
-#
-# @(#)newgrp 8.2 (Berkeley) 5/4/95
-
-newgrp() exec newgrp "$@"
diff --git a/sh/funcs/popd b/sh/funcs/popd
deleted file mode 100644
index b2b65d5..0000000
--- a/sh/funcs/popd
+++ /dev/null
@@ -1,74 +0,0 @@
-# $NetBSD: popd,v 1.7 1995/05/11 21:31:13 christos Exp $
-# Copyright (c) 1991, 1993
-# The Regents of the University of California. All rights reserved.
-#
-# This code is derived from software contributed to Berkeley by
-# Kenneth Almquist.
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions
-# are met:
-# 1. Redistributions of source code must retain the above copyright
-# notice, this list of conditions and the following disclaimer.
-# 2. Redistributions in binary form must reproduce the above copyright
-# notice, this list of conditions and the following disclaimer in the
-# documentation and/or other materials provided with the distribution.
-# 3. All advertising materials mentioning features or use of this software
-# must display the following acknowledgement:
-# This product includes software developed by the University of
-# California, Berkeley and its contributors.
-# 4. Neither the name of the University nor the names of its contributors
-# may be used to endorse or promote products derived from this software
-# without specific prior written permission.
-#
-# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
-# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
-# ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
-# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
-# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
-# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
-# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
-# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
-# SUCH DAMAGE.
-#
-# @(#)popd 8.2 (Berkeley) 5/4/95
-
-# pushd, popd, and dirs --- written by Chris Bertin
-# Pixel Computer Inc. ...!wjh12!pixel!pixutl!chris
-# as modified by Patrick Elam of GTRI and Kenneth Almquist at UW
-
-pushd () {
- SAVE=`pwd`
- if [ "$1" = "" ]
- then if [ "$DSTACK" = "" ]
- then echo "pushd: directory stack empty."
- return 1
- fi
- set $DSTACK
- cd $1 || return
- shift 1
- DSTACK="$*"
- else cd $1 > /dev/null || return
- fi
- DSTACK="$SAVE $DSTACK"
- dirs
-}
-
-popd () {
- if [ "$DSTACK" = "" ]
- then echo "popd: directory stack empty."
- return 1
- fi
- set $DSTACK
- cd $1
- shift
- DSTACK=$*
- dirs
-}
-
-dirs () {
- echo "`pwd` $DSTACK"
- return 0
-}
diff --git a/sh/funcs/pushd b/sh/funcs/pushd
deleted file mode 100644
index b393038..0000000
--- a/sh/funcs/pushd
+++ /dev/null
@@ -1,74 +0,0 @@
-# $NetBSD: pushd,v 1.7 1995/05/11 21:31:15 christos Exp $
-# Copyright (c) 1991, 1993
-# The Regents of the University of California. All rights reserved.
-#
-# This code is derived from software contributed to Berkeley by
-# Kenneth Almquist.
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions
-# are met:
-# 1. Redistributions of source code must retain the above copyright
-# notice, this list of conditions and the following disclaimer.
-# 2. Redistributions in binary form must reproduce the above copyright
-# notice, this list of conditions and the following disclaimer in the
-# documentation and/or other materials provided with the distribution.
-# 3. All advertising materials mentioning features or use of this software
-# must display the following acknowledgement:
-# This product includes software developed by the University of
-# California, Berkeley and its contributors.
-# 4. Neither the name of the University nor the names of its contributors
-# may be used to endorse or promote products derived from this software
-# without specific prior written permission.
-#
-# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
-# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
-# ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
-# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
-# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
-# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
-# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
-# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
-# SUCH DAMAGE.
-#
-# @(#)pushd 8.2 (Berkeley) 5/4/95
-
-# pushd, popd, and dirs --- written by Chris Bertin
-# Pixel Computer Inc. ...!wjh12!pixel!pixutl!chris
-# as modified by Patrick Elam of GTRI and Kenneth Almquist at UW
-
-pushd () {
- SAVE=`pwd`
- if [ "$1" = "" ]
- then if [ "$DSTACK" = "" ]
- then echo "pushd: directory stack empty."
- return 1
- fi
- set $DSTACK
- cd $1 || return
- shift 1
- DSTACK="$*"
- else cd $1 > /dev/null || return
- fi
- DSTACK="$SAVE $DSTACK"
- dirs
-}
-
-popd () {
- if [ "$DSTACK" = "" ]
- then echo "popd: directory stack empty."
- return 1
- fi
- set $DSTACK
- cd $1
- shift
- DSTACK=$*
- dirs
-}
-
-dirs () {
- echo "`pwd` $DSTACK"
- return 0
-}
diff --git a/sh/funcs/suspend b/sh/funcs/suspend
deleted file mode 100644
index 8a4197d..0000000
--- a/sh/funcs/suspend
+++ /dev/null
@@ -1,42 +0,0 @@
-# $NetBSD: suspend,v 1.7 1995/05/11 21:31:17 christos Exp $
-# Copyright (c) 1991, 1993
-# The Regents of the University of California. All rights reserved.
-#
-# This code is derived from software contributed to Berkeley by
-# Kenneth Almquist.
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions
-# are met:
-# 1. Redistributions of source code must retain the above copyright
-# notice, this list of conditions and the following disclaimer.
-# 2. Redistributions in binary form must reproduce the above copyright
-# notice, this list of conditions and the following disclaimer in the
-# documentation and/or other materials provided with the distribution.
-# 3. All advertising materials mentioning features or use of this software
-# must display the following acknowledgement:
-# This product includes software developed by the University of
-# California, Berkeley and its contributors.
-# 4. Neither the name of the University nor the names of its contributors
-# may be used to endorse or promote products derived from this software
-# without specific prior written permission.
-#
-# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
-# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
-# ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
-# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
-# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
-# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
-# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
-# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
-# SUCH DAMAGE.
-#
-# @(#)suspend 8.2 (Berkeley) 5/4/95
-
-suspend() {
- local -
- set +j
- kill -TSTP 0
-}
diff --git a/sh/histedit.c b/sh/histedit.c
deleted file mode 100644
index 4bb2b34..0000000
--- a/sh/histedit.c
+++ /dev/null
@@ -1,540 +0,0 @@
-/* $NetBSD: histedit.c,v 1.34 2003/10/27 06:19:29 lukem Exp $ */
-
-/*-
- * Copyright (c) 1993
- * The Regents of the University of California. All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Kenneth Almquist.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <sys/cdefs.h>
-#ifndef lint
-#if 0
-static char sccsid[] = "@(#)histedit.c 8.2 (Berkeley) 5/4/95";
-#else
-__RCSID("$NetBSD: histedit.c,v 1.34 2003/10/27 06:19:29 lukem Exp $");
-#endif
-#endif /* not lint */
-
-#include <sys/param.h>
-#include <paths.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-/*
- * Editline and history functions (and glue).
- */
-#include "shell.h"
-#include "parser.h"
-#include "var.h"
-#include "options.h"
-#include "main.h"
-#include "output.h"
-#include "mystring.h"
-#include "myhistedit.h"
-#include "error.h"
-#ifndef SMALL
-#include "eval.h"
-#include "memalloc.h"
-
-#define MAXHISTLOOPS 4 /* max recursions through fc */
-#define DEFEDITOR "ed" /* default editor *should* be $EDITOR */
-
-History *hist; /* history cookie */
-EditLine *el; /* editline cookie */
-int displayhist;
-static FILE *el_in, *el_out;
-
-STATIC const char *fc_replace(const char *, char *, char *);
-
-#ifdef DEBUG
-extern FILE *tracefile;
-#endif
-
-/*
- * Set history and editing status. Called whenever the status may
- * have changed (figures out what to do).
- */
-void
-histedit(void)
-{
- FILE *el_err;
-
-#define editing (Eflag || Vflag)
-
- if (iflag) {
- if (!hist) {
- /*
- * turn history on
- */
- INTOFF;
- hist = history_init();
- INTON;
-
- if (hist != NULL)
- sethistsize(histsizeval());
- else
- out2str("sh: can't initialize history\n");
- }
- if (editing && !el && isatty(0)) { /* && isatty(2) ??? */
- /*
- * turn editing on
- */
- char *term, *shname;
-
- INTOFF;
- if (el_in == NULL)
- el_in = fdopen(0, "r");
- if (el_out == NULL)
- el_out = fdopen(2, "w");
- if (el_in == NULL || el_out == NULL)
- goto bad;
- el_err = el_out;
-#if DEBUG
- if (tracefile)
- el_err = tracefile;
-#endif
- term = lookupvar("TERM");
- if (term)
- setenv("TERM", term, 1);
- else
- unsetenv("TERM");
- shname = arg0;
- if (shname[0] == '-')
- shname++;
- el = el_init(shname, el_in, el_out, el_err);
- if (el != NULL) {
- if (hist)
- el_set(el, EL_HIST, history, hist);
- el_set(el, EL_PROMPT, getprompt);
- el_set(el, EL_SIGNAL, 1);
- } else {
-bad:
- out2str("sh: can't initialize editing\n");
- }
- INTON;
- } else if (!editing && el) {
- INTOFF;
- el_end(el);
- el = NULL;
- INTON;
- }
- if (el) {
- if (Vflag)
- el_set(el, EL_EDITOR, "vi");
- else if (Eflag)
- el_set(el, EL_EDITOR, "emacs");
- el_source(el, NULL);
- }
- } else {
- INTOFF;
- if (el) { /* no editing if not interactive */
- el_end(el);
- el = NULL;
- }
- if (hist) {
- history_end(hist);
- hist = NULL;
- }
- INTON;
- }
-}
-
-
-void
-sethistsize(const char *hs)
-{
- int histsize;
- HistEvent he;
-
- if (hist != NULL) {
- if (hs == NULL || *hs == '\0' ||
- (histsize = atoi(hs)) < 0)
- histsize = 100;
- history(hist, &he, H_SETSIZE, histsize);
- }
-}
-
-void
-setterm(const char *term)
-{
- if (el != NULL && term != NULL)
- if (el_set(el, EL_TERMINAL, term) != 0) {
- outfmt(out2, "sh: Can't set terminal type %s\n", term);
- outfmt(out2, "sh: Using dumb terminal settings.\n");
- }
-}
-
-int
-inputrc(argc, argv)
- int argc;
- char **argv;
-{
- if (argc != 2) {
- out2str("usage: inputrc file\n");
- return 1;
- }
- if (el != NULL) {
- if (el_source(el, argv[1])) {
- out2str("inputrc: failed\n");
- return 1;
- } else
- return 0;
- } else {
- out2str("sh: inputrc ignored, not editing\n");
- return 1;
- }
-}
-
-/*
- * This command is provided since POSIX decided to standardize
- * the Korn shell fc command. Oh well...
- */
-int
-histcmd(int argc, char **argv)
-{
- int ch;
- const char *editor = NULL;
- HistEvent he;
- int lflg = 0, nflg = 0, rflg = 0, sflg = 0;
- int i, retval;
- const char *firststr, *laststr;
- int first, last, direction;
- char *pat = NULL, *repl; /* ksh "fc old=new" crap */
- static int active = 0;
- struct jmploc jmploc;
- struct jmploc *volatile savehandler;
- char editfile[MAXPATHLEN + 1];
- FILE *efp;
-#ifdef __GNUC__
- /* Avoid longjmp clobbering */
- (void) &editor;
- (void) &lflg;
- (void) &nflg;
- (void) &rflg;
- (void) &sflg;
- (void) &firststr;
- (void) &laststr;
- (void) &pat;
- (void) &repl;
- (void) &efp;
- (void) &argc;
- (void) &argv;
-#endif
-
- if (hist == NULL)
- error("history not active");
-
- if (argc == 1)
- error("missing history argument");
-
- optreset = 1; optind = 1; /* initialize getopt */
- while (not_fcnumber(argv[optind]) &&
- (ch = getopt(argc, argv, ":e:lnrs")) != -1)
- switch ((char)ch) {
- case 'e':
- editor = optionarg;
- break;
- case 'l':
- lflg = 1;
- break;
- case 'n':
- nflg = 1;
- break;
- case 'r':
- rflg = 1;
- break;
- case 's':
- sflg = 1;
- break;
- case ':':
- error("option -%c expects argument", optopt);
- /* NOTREACHED */
- case '?':
- default:
- error("unknown option: -%c", optopt);
- /* NOTREACHED */
- }
- argc -= optind, argv += optind;
-
- /*
- * If executing...
- */
- if (lflg == 0 || editor || sflg) {
- lflg = 0; /* ignore */
- editfile[0] = '\0';
- /*
- * Catch interrupts to reset active counter and
- * cleanup temp files.
- */
- if (setjmp(jmploc.loc)) {
- active = 0;
- if (*editfile)
- unlink(editfile);
- handler = savehandler;
- longjmp(handler->loc, 1);
- }
- savehandler = handler;
- handler = &jmploc;
- if (++active > MAXHISTLOOPS) {
- active = 0;
- displayhist = 0;
- error("called recursively too many times");
- }
- /*
- * Set editor.
- */
- if (sflg == 0) {
- if (editor == NULL &&
- (editor = bltinlookup("FCEDIT", 1)) == NULL &&
- (editor = bltinlookup("EDITOR", 1)) == NULL)
- editor = DEFEDITOR;
- if (editor[0] == '-' && editor[1] == '\0') {
- sflg = 1; /* no edit */
- editor = NULL;
- }
- }
- }
-
- /*
- * If executing, parse [old=new] now
- */
- if (lflg == 0 && argc > 0 &&
- ((repl = strchr(argv[0], '=')) != NULL)) {
- pat = argv[0];
- *repl++ = '\0';
- argc--, argv++;
- }
- /*
- * determine [first] and [last]
- */
- switch (argc) {
- case 0:
- firststr = lflg ? "-16" : "-1";
- laststr = "-1";
- break;
- case 1:
- firststr = argv[0];
- laststr = lflg ? "-1" : argv[0];
- break;
- case 2:
- firststr = argv[0];
- laststr = argv[1];
- break;
- default:
- error("too many args");
- /* NOTREACHED */
- }
- /*
- * Turn into event numbers.
- */
- first = str_to_event(firststr, 0);
- last = str_to_event(laststr, 1);
-
- if (rflg) {
- i = last;
- last = first;
- first = i;
- }
- /*
- * XXX - this should not depend on the event numbers
- * always increasing. Add sequence numbers or offset
- * to the history element in next (diskbased) release.
- */
- direction = first < last ? H_PREV : H_NEXT;
-
- /*
- * If editing, grab a temp file.
- */
- if (editor) {
- int fd;
- INTOFF; /* easier */
- snprintf(editfile, sizeof(editfile), "%s_shXXXXXX", _PATH_TMP);
- if ((fd = mkstemp(editfile)) < 0)
- error("can't create temporary file %s", editfile);
- if ((efp = fdopen(fd, "w")) == NULL) {
- close(fd);
- error("can't allocate stdio buffer for temp");
- }
- }
-
- /*
- * Loop through selected history events. If listing or executing,
- * do it now. Otherwise, put into temp file and call the editor
- * after.
- *
- * The history interface needs rethinking, as the following
- * convolutions will demonstrate.
- */
- history(hist, &he, H_FIRST);
- retval = history(hist, &he, H_NEXT_EVENT, first);
- for (;retval != -1; retval = history(hist, &he, direction)) {
- if (lflg) {
- if (!nflg)
- out1fmt("%5d ", he.num);
- out1str(he.str);
- } else {
- const char *s = pat ?
- fc_replace(he.str, pat, repl) : he.str;
-
- if (sflg) {
- if (displayhist) {
- out2str(s);
- }
-
- evalstring(strcpy(stalloc(strlen(s) + 1), s), 0);
- if (displayhist && hist) {
- /*
- * XXX what about recursive and
- * relative histnums.
- */
- history(hist, &he, H_ENTER, s);
- }
- } else
- fputs(s, efp);
- }
- /*
- * At end? (if we were to lose last, we'd sure be
- * messed up).
- */
- if (he.num == last)
- break;
- }
- if (editor) {
- char *editcmd;
-
- fclose(efp);
- editcmd = stalloc(strlen(editor) + strlen(editfile) + 2);
- sprintf(editcmd, "%s %s", editor, editfile);
- evalstring(editcmd, 0); /* XXX - should use no JC command */
- INTON;
- readcmdfile(editfile); /* XXX - should read back - quick tst */
- unlink(editfile);
- }
-
- if (lflg == 0 && active > 0)
- --active;
- if (displayhist)
- displayhist = 0;
- return 0;
-}
-
-STATIC const char *
-fc_replace(const char *s, char *p, char *r)
-{
- char *dest;
- int plen = strlen(p);
-
- STARTSTACKSTR(dest);
- while (*s) {
- if (*s == *p && strncmp(s, p, plen) == 0) {
- while (*r)
- STPUTC(*r++, dest);
- s += plen;
- *p = '\0'; /* so no more matches */
- } else
- STPUTC(*s++, dest);
- }
- STACKSTRNUL(dest);
- dest = grabstackstr(dest);
-
- return (dest);
-}
-
-int
-not_fcnumber(char *s)
-{
- if (s == NULL)
- return 0;
- if (*s == '-')
- s++;
- return (!is_number(s));
-}
-
-int
-str_to_event(const char *str, int last)
-{
- HistEvent he;
- const char *s = str;
- int relative = 0;
- int i, retval;
-
- retval = history(hist, &he, H_FIRST);
- switch (*s) {
- case '-':
- relative = 1;
- /*FALLTHROUGH*/
- case '+':
- s++;
- }
- if (is_number(s)) {
- i = atoi(s);
- if (relative) {
- while (retval != -1 && i--) {
- retval = history(hist, &he, H_NEXT);
- }
- if (retval == -1)
- retval = history(hist, &he, H_LAST);
- } else {
- retval = history(hist, &he, H_NEXT_EVENT, i);
- if (retval == -1) {
- /*
- * the notion of first and last is
- * backwards to that of the history package
- */
- retval = history(hist, &he,
- last ? H_FIRST : H_LAST);
- }
- }
- if (retval == -1)
- error("history number %s not found (internal error)",
- str);
- } else {
- /*
- * pattern
- */
- retval = history(hist, &he, H_PREV_STR, str);
- if (retval == -1)
- error("history pattern not found: %s", str);
- }
- return (he.num);
-}
-#else
-int
-histcmd(int argc, char **argv)
-{
- error("not compiled with history support");
- /* NOTREACHED */
-}
-int
-inputrc(int argc, char **argv)
-{
- error("not compiled with history support");
- /* NOTREACHED */
-}
-#endif
diff --git a/sh/init.c b/sh/init.c
deleted file mode 100644
index 55ad172..0000000
--- a/sh/init.c
+++ /dev/null
@@ -1,1090 +0,0 @@
-/*
- * This file was generated by the mkinit program.
- */
-
-#include "shell.h"
-#include "mystring.h"
-#include "init.h"
-#include "eval.h"
-#include <stdio.h>
-#include "input.h"
-#include "error.h"
-#include <stdlib.h>
-#include "options.h"
-#include "redir.h"
-#include <signal.h>
-#include "trap.h"
-#include "output.h"
-#include "memalloc.h"
-#include "var.h"
-
-
-
-#undef ATABSIZE
-#define ATABSIZE 39
-#undef YYBISON
-#define YYBISON 1
-#undef YYSKELETON_NAME
-#define YYSKELETON_NAME "yacc.c"
-#undef YYPURE
-#define YYPURE 0
-#undef YYLSP_NEEDED
-#define YYLSP_NEEDED 0
-#undef ARITH_NUM
-#define ARITH_NUM 258
-#undef ARITH_LPAREN
-#define ARITH_LPAREN 259
-#undef ARITH_RPAREN
-#define ARITH_RPAREN 260
-#undef ARITH_OR
-#define ARITH_OR 261
-#undef ARITH_AND
-#define ARITH_AND 262
-#undef ARITH_BOR
-#define ARITH_BOR 263
-#undef ARITH_BXOR
-#define ARITH_BXOR 264
-#undef ARITH_BAND
-#define ARITH_BAND 265
-#undef ARITH_NE
-#define ARITH_NE 266
-#undef ARITH_EQ
-#define ARITH_EQ 267
-#undef ARITH_LE
-#define ARITH_LE 268
-#undef ARITH_GE
-#define ARITH_GE 269
-#undef ARITH_GT
-#define ARITH_GT 270
-#undef ARITH_LT
-#define ARITH_LT 271
-#undef ARITH_RSHIFT
-#define ARITH_RSHIFT 272
-#undef ARITH_LSHIFT
-#define ARITH_LSHIFT 273
-#undef ARITH_SUB
-#define ARITH_SUB 274
-#undef ARITH_ADD
-#define ARITH_ADD 275
-#undef ARITH_REM
-#define ARITH_REM 276
-#undef ARITH_DIV
-#define ARITH_DIV 277
-#undef ARITH_MUL
-#define ARITH_MUL 278
-#undef ARITH_BNOT
-#define ARITH_BNOT 279
-#undef ARITH_NOT
-#define ARITH_NOT 280
-#undef ARITH_UNARYPLUS
-#define ARITH_UNARYPLUS 281
-#undef ARITH_UNARYMINUS
-#define ARITH_UNARYMINUS 282
-#undef YYFINAL
-#define YYFINAL 14
-#undef YYLAST
-#define YYLAST 170
-#undef YYNTOKENS
-#define YYNTOKENS 28
-#undef YYNNTS
-#define YYNNTS 3
-#undef YYNRULES
-#define YYNRULES 26
-#undef YYNSTATES
-#define YYNSTATES 52
-#undef YYUNDEFTOK
-#define YYUNDEFTOK 2
-#undef YYMAXUTOK
-#define YYMAXUTOK 282
-#undef YYPACT_NINF
-#define YYPACT_NINF -13
-#undef YYTABLE_NINF
-#define YYTABLE_NINF -1
-#undef yyerrok
-#define yyerrok (yyerrstatus = 0)
-#undef yyclearin
-#define yyclearin (yychar = YYEMPTY)
-#undef YYEMPTY
-#define YYEMPTY (-2)
-#undef YYEOF
-#define YYEOF 0
-#undef YYACCEPT
-#define YYACCEPT goto yyacceptlab
-#undef YYABORT
-#define YYABORT goto yyabortlab
-#undef YYERROR
-#define YYERROR goto yyerrorlab
-#undef YYFAIL
-#define YYFAIL goto yyerrlab
-#undef YYTERROR
-#define YYTERROR 1
-#undef YYERRCODE
-#define YYERRCODE 256
-#undef YYPOPSTACK
-#define YYPOPSTACK (yyvsp--, yyssp--)
-#undef YY_INT_ALIGNED
-#define YY_INT_ALIGNED short int
-#undef FLEX_SCANNER
-#define FLEX_SCANNER
-#undef YY_FLEX_MAJOR_VERSION
-#define YY_FLEX_MAJOR_VERSION 2
-#undef YY_FLEX_MINOR_VERSION
-#define YY_FLEX_MINOR_VERSION 5
-#undef YY_FLEX_SUBMINOR_VERSION
-#define YY_FLEX_SUBMINOR_VERSION 31
-#undef FLEX_BETA
-#define FLEX_BETA
-#undef FLEXINT_H
-#define FLEXINT_H
-#undef INT8_MIN
-#define INT8_MIN (-128)
-#undef INT16_MIN
-#define INT16_MIN (-32767-1)
-#undef INT32_MIN
-#define INT32_MIN (-2147483647-1)
-#undef INT8_MAX
-#define INT8_MAX (127)
-#undef INT16_MAX
-#define INT16_MAX (32767)
-#undef INT32_MAX
-#define INT32_MAX (2147483647)
-#undef UINT8_MAX
-#define UINT8_MAX (255U)
-#undef UINT16_MAX
-#define UINT16_MAX (65535U)
-#undef UINT32_MAX
-#define UINT32_MAX (4294967295U)
-#undef YY_USE_CONST
-#define YY_USE_CONST
-#undef YY_USE_CONST
-#define YY_USE_CONST
-#undef yyconst
-#define yyconst const
-#undef yyconst
-#define yyconst
-#undef YY_NULL
-#define YY_NULL 0
-#undef BEGIN
-#define BEGIN (yy_start) = 1 + 2 *
-#undef YY_START
-#define YY_START (((yy_start) - 1) / 2)
-#undef YYSTATE
-#define YYSTATE YY_START
-#undef YY_NEW_FILE
-#define YY_NEW_FILE yyrestart(yyin )
-#undef YY_END_OF_BUFFER_CHAR
-#define YY_END_OF_BUFFER_CHAR 0
-#undef YY_BUF_SIZE
-#define YY_BUF_SIZE 16384
-#undef YY_TYPEDEF_YY_BUFFER_STATE
-#define YY_TYPEDEF_YY_BUFFER_STATE
-#undef EOB_ACT_CONTINUE_SCAN
-#define EOB_ACT_CONTINUE_SCAN 0
-#undef EOB_ACT_END_OF_FILE
-#define EOB_ACT_END_OF_FILE 1
-#undef EOB_ACT_LAST_MATCH
-#define EOB_ACT_LAST_MATCH 2
-#undef YY_TYPEDEF_YY_SIZE_T
-#define YY_TYPEDEF_YY_SIZE_T
-#undef YY_STRUCT_YY_BUFFER_STATE
-#define YY_STRUCT_YY_BUFFER_STATE
-#undef YY_BUFFER_NEW
-#define YY_BUFFER_NEW 0
-#undef YY_BUFFER_NORMAL
-#define YY_BUFFER_NORMAL 1
-#undef YY_BUFFER_EOF_PENDING
-#define YY_BUFFER_EOF_PENDING 2
-#undef YY_CURRENT_BUFFER
-#define YY_CURRENT_BUFFER ( (yy_buffer_stack) \
-#undef YY_CURRENT_BUFFER_LVALUE
-#define YY_CURRENT_BUFFER_LVALUE (yy_buffer_stack)[(yy_buffer_stack_top)]
-#undef YY_FLUSH_BUFFER
-#define YY_FLUSH_BUFFER yy_flush_buffer(YY_CURRENT_BUFFER )
-#undef yy_new_buffer
-#define yy_new_buffer yy_create_buffer
-#undef YY_SKIP_YYWRAP
-#define YY_SKIP_YYWRAP
-#undef yytext_ptr
-#define yytext_ptr yytext
-#undef YY_DO_BEFORE_ACTION
-#define YY_DO_BEFORE_ACTION \
-#undef YY_NUM_RULES
-#define YY_NUM_RULES 29
-#undef YY_END_OF_BUFFER
-#define YY_END_OF_BUFFER 30
-#undef REJECT
-#define REJECT reject_used_but_not_detected
-#undef YY_MORE_ADJ
-#define YY_MORE_ADJ 0
-#undef YY_RESTORE_YY_MORE_OFFSET
-#define YY_RESTORE_YY_MORE_OFFSET
-#undef YY_NO_UNPUT
-#define YY_NO_UNPUT
-#undef INITIAL
-#define INITIAL 0
-#undef YY_EXTRA_TYPE
-#define YY_EXTRA_TYPE void *
-#undef YY_READ_BUF_SIZE
-#define YY_READ_BUF_SIZE 8192
-#undef ECHO
-#define ECHO (void) fwrite( yytext, yyleng, 1, yyout )
-#undef YY_START_STACK_INCR
-#define YY_START_STACK_INCR 25
-#undef YY_DECL_IS_OURS
-#define YY_DECL_IS_OURS 1
-#undef YY_DECL
-#define YY_DECL int yylex (void)
-#undef YY_USER_ACTION
-#define YY_USER_ACTION
-#undef YY_BREAK
-#define YY_BREAK break;
-#undef YY_RULE_SETUP
-#define YY_RULE_SETUP \
-#undef YY_EXIT_FAILURE
-#define YY_EXIT_FAILURE 2
-#undef YYTABLES_NAME
-#define YYTABLES_NAME "yytables"
-#undef MAXPWD
-#define MAXPWD 256
-#undef signal
-#define signal bsd_signal
-#undef ALL
-#define ALL (E_OPEN|E_CREAT|E_EXEC)
-#undef EV_EXIT
-#define EV_EXIT 01 /* exit after evaluating tree */
-#undef EV_TESTED
-#define EV_TESTED 02 /* exit status is checked; ignore -e flag */
-#undef EV_BACKCMD
-#define EV_BACKCMD 04 /* command executing within back quotes */
-#undef CMDTABLESIZE
-#define CMDTABLESIZE 31 /* should be prime */
-#undef ARB
-#define ARB 1 /* actual size determined at run time */
-#undef NEWARGS
-#define NEWARGS 5
-#undef EOF_NLEFT
-#define EOF_NLEFT -99 /* value of parsenleft when EOF pushed back */
-#undef _PATH_DEVNULL
-#define _PATH_DEVNULL "/dev/null"
-#undef PROFILE
-#define PROFILE 0
-#undef SIGSSIZE
-#define SIGSSIZE (sizeof(sigs)/sizeof(sigs[0]))
-#undef MINSIZE
-#define MINSIZE 504 /* minimum size of a block */
-#undef DEFINE_OPTIONS
-#define DEFINE_OPTIONS
-#undef EOFMARKLEN
-#define EOFMARKLEN 79
-#undef OPENBRACE
-#define OPENBRACE '{'
-#undef CLOSEBRACE
-#define CLOSEBRACE '}'
-#undef EMPTY
-#define EMPTY -2 /* marks an unused slot in redirtab */
-#undef signal
-#define signal bsd_signal
-#undef sys_signame
-#define sys_signame sys_siglist
-#undef S_DFL
-#define S_DFL 1 /* default signal handling (SIG_DFL) */
-#undef S_CATCH
-#define S_CATCH 2 /* signal is caught */
-#undef S_IGN
-#define S_IGN 3 /* signal is ignored (SIG_IGN) */
-#undef S_HARD_IGN
-#define S_HARD_IGN 4 /* signal is ignored permenantly */
-#undef S_RESET
-#define S_RESET 5 /* temporary - to reset a hard ignored sig */
-#undef OUTBUFSIZ
-#define OUTBUFSIZ BUFSIZ
-#undef BLOCK_OUT
-#define BLOCK_OUT -2 /* output to a fixed block of memory */
-#undef MEM_OUT
-#define MEM_OUT -3 /* output to dynamically allocated memory */
-#undef OUTPUT_ERR
-#define OUTPUT_ERR 01 /* error occurred on output */
-#undef TEMPSIZE
-#define TEMPSIZE 24
-#undef HAVE_VASPRINTF
-#define HAVE_VASPRINTF 1
-#undef VTABSIZE
-#define VTABSIZE 39
-#undef VTABSIZE
-#define VTABSIZE 517
-#undef ATABSIZE
-#define ATABSIZE 39
-#undef YYBISON
-#define YYBISON 1
-#undef YYSKELETON_NAME
-#define YYSKELETON_NAME "yacc.c"
-#undef YYPURE
-#define YYPURE 0
-#undef YYLSP_NEEDED
-#define YYLSP_NEEDED 0
-#undef ARITH_NUM
-#define ARITH_NUM 258
-#undef ARITH_LPAREN
-#define ARITH_LPAREN 259
-#undef ARITH_RPAREN
-#define ARITH_RPAREN 260
-#undef ARITH_OR
-#define ARITH_OR 261
-#undef ARITH_AND
-#define ARITH_AND 262
-#undef ARITH_BOR
-#define ARITH_BOR 263
-#undef ARITH_BXOR
-#define ARITH_BXOR 264
-#undef ARITH_BAND
-#define ARITH_BAND 265
-#undef ARITH_NE
-#define ARITH_NE 266
-#undef ARITH_EQ
-#define ARITH_EQ 267
-#undef ARITH_LE
-#define ARITH_LE 268
-#undef ARITH_GE
-#define ARITH_GE 269
-#undef ARITH_GT
-#define ARITH_GT 270
-#undef ARITH_LT
-#define ARITH_LT 271
-#undef ARITH_RSHIFT
-#define ARITH_RSHIFT 272
-#undef ARITH_LSHIFT
-#define ARITH_LSHIFT 273
-#undef ARITH_SUB
-#define ARITH_SUB 274
-#undef ARITH_ADD
-#define ARITH_ADD 275
-#undef ARITH_REM
-#define ARITH_REM 276
-#undef ARITH_DIV
-#define ARITH_DIV 277
-#undef ARITH_MUL
-#define ARITH_MUL 278
-#undef ARITH_BNOT
-#define ARITH_BNOT 279
-#undef ARITH_NOT
-#define ARITH_NOT 280
-#undef ARITH_UNARYPLUS
-#define ARITH_UNARYPLUS 281
-#undef ARITH_UNARYMINUS
-#define ARITH_UNARYMINUS 282
-#undef YYFINAL
-#define YYFINAL 14
-#undef YYLAST
-#define YYLAST 170
-#undef YYNTOKENS
-#define YYNTOKENS 28
-#undef YYNNTS
-#define YYNNTS 3
-#undef YYNRULES
-#define YYNRULES 26
-#undef YYNSTATES
-#define YYNSTATES 52
-#undef YYUNDEFTOK
-#define YYUNDEFTOK 2
-#undef YYMAXUTOK
-#define YYMAXUTOK 282
-#undef YYPACT_NINF
-#define YYPACT_NINF -13
-#undef YYTABLE_NINF
-#define YYTABLE_NINF -1
-#undef yyerrok
-#define yyerrok (yyerrstatus = 0)
-#undef yyclearin
-#define yyclearin (yychar = YYEMPTY)
-#undef YYEMPTY
-#define YYEMPTY (-2)
-#undef YYEOF
-#define YYEOF 0
-#undef YYACCEPT
-#define YYACCEPT goto yyacceptlab
-#undef YYABORT
-#define YYABORT goto yyabortlab
-#undef YYERROR
-#define YYERROR goto yyerrorlab
-#undef YYFAIL
-#define YYFAIL goto yyerrlab
-#undef YYTERROR
-#define YYTERROR 1
-#undef YYERRCODE
-#define YYERRCODE 256
-#undef YYPOPSTACK
-#define YYPOPSTACK (yyvsp--, yyssp--)
-#undef YY_INT_ALIGNED
-#define YY_INT_ALIGNED short int
-#undef FLEX_SCANNER
-#define FLEX_SCANNER
-#undef YY_FLEX_MAJOR_VERSION
-#define YY_FLEX_MAJOR_VERSION 2
-#undef YY_FLEX_MINOR_VERSION
-#define YY_FLEX_MINOR_VERSION 5
-#undef YY_FLEX_SUBMINOR_VERSION
-#define YY_FLEX_SUBMINOR_VERSION 31
-#undef FLEX_BETA
-#define FLEX_BETA
-#undef FLEXINT_H
-#define FLEXINT_H
-#undef INT8_MIN
-#define INT8_MIN (-128)
-#undef INT16_MIN
-#define INT16_MIN (-32767-1)
-#undef INT32_MIN
-#define INT32_MIN (-2147483647-1)
-#undef INT8_MAX
-#define INT8_MAX (127)
-#undef INT16_MAX
-#define INT16_MAX (32767)
-#undef INT32_MAX
-#define INT32_MAX (2147483647)
-#undef UINT8_MAX
-#define UINT8_MAX (255U)
-#undef UINT16_MAX
-#define UINT16_MAX (65535U)
-#undef UINT32_MAX
-#define UINT32_MAX (4294967295U)
-#undef YY_USE_CONST
-#define YY_USE_CONST
-#undef YY_USE_CONST
-#define YY_USE_CONST
-#undef yyconst
-#define yyconst const
-#undef yyconst
-#define yyconst
-#undef YY_NULL
-#define YY_NULL 0
-#undef BEGIN
-#define BEGIN (yy_start) = 1 + 2 *
-#undef YY_START
-#define YY_START (((yy_start) - 1) / 2)
-#undef YYSTATE
-#define YYSTATE YY_START
-#undef YY_NEW_FILE
-#define YY_NEW_FILE yyrestart(yyin )
-#undef YY_END_OF_BUFFER_CHAR
-#define YY_END_OF_BUFFER_CHAR 0
-#undef YY_BUF_SIZE
-#define YY_BUF_SIZE 16384
-#undef YY_TYPEDEF_YY_BUFFER_STATE
-#define YY_TYPEDEF_YY_BUFFER_STATE
-#undef EOB_ACT_CONTINUE_SCAN
-#define EOB_ACT_CONTINUE_SCAN 0
-#undef EOB_ACT_END_OF_FILE
-#define EOB_ACT_END_OF_FILE 1
-#undef EOB_ACT_LAST_MATCH
-#define EOB_ACT_LAST_MATCH 2
-#undef YY_TYPEDEF_YY_SIZE_T
-#define YY_TYPEDEF_YY_SIZE_T
-#undef YY_STRUCT_YY_BUFFER_STATE
-#define YY_STRUCT_YY_BUFFER_STATE
-#undef YY_BUFFER_NEW
-#define YY_BUFFER_NEW 0
-#undef YY_BUFFER_NORMAL
-#define YY_BUFFER_NORMAL 1
-#undef YY_BUFFER_EOF_PENDING
-#define YY_BUFFER_EOF_PENDING 2
-#undef YY_CURRENT_BUFFER
-#define YY_CURRENT_BUFFER ( (yy_buffer_stack) \
-#undef YY_CURRENT_BUFFER_LVALUE
-#define YY_CURRENT_BUFFER_LVALUE (yy_buffer_stack)[(yy_buffer_stack_top)]
-#undef YY_FLUSH_BUFFER
-#define YY_FLUSH_BUFFER yy_flush_buffer(YY_CURRENT_BUFFER )
-#undef yy_new_buffer
-#define yy_new_buffer yy_create_buffer
-#undef YY_SKIP_YYWRAP
-#define YY_SKIP_YYWRAP
-#undef yytext_ptr
-#define yytext_ptr yytext
-#undef YY_DO_BEFORE_ACTION
-#define YY_DO_BEFORE_ACTION \
-#undef YY_NUM_RULES
-#define YY_NUM_RULES 29
-#undef YY_END_OF_BUFFER
-#define YY_END_OF_BUFFER 30
-#undef REJECT
-#define REJECT reject_used_but_not_detected
-#undef YY_MORE_ADJ
-#define YY_MORE_ADJ 0
-#undef YY_RESTORE_YY_MORE_OFFSET
-#define YY_RESTORE_YY_MORE_OFFSET
-#undef YY_NO_UNPUT
-#define YY_NO_UNPUT
-#undef INITIAL
-#define INITIAL 0
-#undef YY_EXTRA_TYPE
-#define YY_EXTRA_TYPE void *
-#undef YY_READ_BUF_SIZE
-#define YY_READ_BUF_SIZE 8192
-#undef ECHO
-#define ECHO (void) fwrite( yytext, yyleng, 1, yyout )
-#undef YY_START_STACK_INCR
-#define YY_START_STACK_INCR 25
-#undef YY_DECL_IS_OURS
-#define YY_DECL_IS_OURS 1
-#undef YY_DECL
-#define YY_DECL int yylex (void)
-#undef YY_USER_ACTION
-#define YY_USER_ACTION
-#undef YY_BREAK
-#define YY_BREAK break;
-#undef YY_RULE_SETUP
-#define YY_RULE_SETUP \
-#undef YY_EXIT_FAILURE
-#define YY_EXIT_FAILURE 2
-#undef YYTABLES_NAME
-#define YYTABLES_NAME "yytables"
-#undef MAXPWD
-#define MAXPWD 256
-#undef signal
-#define signal bsd_signal
-#undef ALL
-#define ALL (E_OPEN|E_CREAT|E_EXEC)
-#undef EV_EXIT
-#define EV_EXIT 01 /* exit after evaluating tree */
-#undef EV_TESTED
-#define EV_TESTED 02 /* exit status is checked; ignore -e flag */
-#undef EV_BACKCMD
-#define EV_BACKCMD 04 /* command executing within back quotes */
-#undef CMDTABLESIZE
-#define CMDTABLESIZE 31 /* should be prime */
-#undef ARB
-#define ARB 1 /* actual size determined at run time */
-#undef NEWARGS
-#define NEWARGS 5
-#undef EOF_NLEFT
-#define EOF_NLEFT -99 /* value of parsenleft when EOF pushed back */
-#undef _PATH_DEVNULL
-#define _PATH_DEVNULL "/dev/null"
-#undef PROFILE
-#define PROFILE 0
-#undef SIGSSIZE
-#define SIGSSIZE (sizeof(sigs)/sizeof(sigs[0]))
-#undef MINSIZE
-#define MINSIZE 504 /* minimum size of a block */
-#undef DEFINE_OPTIONS
-#define DEFINE_OPTIONS
-#undef EOFMARKLEN
-#define EOFMARKLEN 79
-#undef OPENBRACE
-#define OPENBRACE '{'
-#undef CLOSEBRACE
-#define CLOSEBRACE '}'
-#undef EMPTY
-#define EMPTY -2 /* marks an unused slot in redirtab */
-#undef signal
-#define signal bsd_signal
-#undef sys_signame
-#define sys_signame sys_siglist
-#undef S_DFL
-#define S_DFL 1 /* default signal handling (SIG_DFL) */
-#undef S_CATCH
-#define S_CATCH 2 /* signal is caught */
-#undef S_IGN
-#define S_IGN 3 /* signal is ignored (SIG_IGN) */
-#undef S_HARD_IGN
-#define S_HARD_IGN 4 /* signal is ignored permenantly */
-#undef S_RESET
-#define S_RESET 5 /* temporary - to reset a hard ignored sig */
-#undef OUTBUFSIZ
-#define OUTBUFSIZ BUFSIZ
-#undef BLOCK_OUT
-#define BLOCK_OUT -2 /* output to a fixed block of memory */
-#undef MEM_OUT
-#define MEM_OUT -3 /* output to dynamically allocated memory */
-#undef OUTPUT_ERR
-#define OUTPUT_ERR 01 /* error occurred on output */
-#undef TEMPSIZE
-#define TEMPSIZE 24
-#undef HAVE_VASPRINTF
-#define HAVE_VASPRINTF 1
-#undef VTABSIZE
-#define VTABSIZE 39
-#undef VTABSIZE
-#define VTABSIZE 517
-#undef main
-#define main echocmd
-#undef YYBISON
-#define YYBISON 1
-#undef YYSKELETON_NAME
-#define YYSKELETON_NAME "yacc.c"
-#undef YYPURE
-#define YYPURE 0
-#undef YYLSP_NEEDED
-#define YYLSP_NEEDED 0
-#undef ARITH_NUM
-#define ARITH_NUM 258
-#undef ARITH_LPAREN
-#define ARITH_LPAREN 259
-#undef ARITH_RPAREN
-#define ARITH_RPAREN 260
-#undef ARITH_OR
-#define ARITH_OR 261
-#undef ARITH_AND
-#define ARITH_AND 262
-#undef ARITH_BOR
-#define ARITH_BOR 263
-#undef ARITH_BXOR
-#define ARITH_BXOR 264
-#undef ARITH_BAND
-#define ARITH_BAND 265
-#undef ARITH_NE
-#define ARITH_NE 266
-#undef ARITH_EQ
-#define ARITH_EQ 267
-#undef ARITH_LE
-#define ARITH_LE 268
-#undef ARITH_GE
-#define ARITH_GE 269
-#undef ARITH_GT
-#define ARITH_GT 270
-#undef ARITH_LT
-#define ARITH_LT 271
-#undef ARITH_RSHIFT
-#define ARITH_RSHIFT 272
-#undef ARITH_LSHIFT
-#define ARITH_LSHIFT 273
-#undef ARITH_SUB
-#define ARITH_SUB 274
-#undef ARITH_ADD
-#define ARITH_ADD 275
-#undef ARITH_REM
-#define ARITH_REM 276
-#undef ARITH_DIV
-#define ARITH_DIV 277
-#undef ARITH_MUL
-#define ARITH_MUL 278
-#undef ARITH_BNOT
-#define ARITH_BNOT 279
-#undef ARITH_NOT
-#define ARITH_NOT 280
-#undef ARITH_UNARYPLUS
-#define ARITH_UNARYPLUS 281
-#undef ARITH_UNARYMINUS
-#define ARITH_UNARYMINUS 282
-#undef YYFINAL
-#define YYFINAL 14
-#undef YYLAST
-#define YYLAST 170
-#undef YYNTOKENS
-#define YYNTOKENS 28
-#undef YYNNTS
-#define YYNNTS 3
-#undef YYNRULES
-#define YYNRULES 26
-#undef YYNSTATES
-#define YYNSTATES 52
-#undef YYUNDEFTOK
-#define YYUNDEFTOK 2
-#undef YYMAXUTOK
-#define YYMAXUTOK 282
-#undef YYPACT_NINF
-#define YYPACT_NINF -13
-#undef YYTABLE_NINF
-#define YYTABLE_NINF -1
-#undef yyerrok
-#define yyerrok (yyerrstatus = 0)
-#undef yyclearin
-#define yyclearin (yychar = YYEMPTY)
-#undef YYEMPTY
-#define YYEMPTY (-2)
-#undef YYEOF
-#define YYEOF 0
-#undef YYACCEPT
-#define YYACCEPT goto yyacceptlab
-#undef YYABORT
-#define YYABORT goto yyabortlab
-#undef YYERROR
-#define YYERROR goto yyerrorlab
-#undef YYFAIL
-#define YYFAIL goto yyerrlab
-#undef YYTERROR
-#define YYTERROR 1
-#undef YYERRCODE
-#define YYERRCODE 256
-#undef YYPOPSTACK
-#define YYPOPSTACK (yyvsp--, yyssp--)
-#undef YY_INT_ALIGNED
-#define YY_INT_ALIGNED short int
-#undef FLEX_SCANNER
-#define FLEX_SCANNER
-#undef YY_FLEX_MAJOR_VERSION
-#define YY_FLEX_MAJOR_VERSION 2
-#undef YY_FLEX_MINOR_VERSION
-#define YY_FLEX_MINOR_VERSION 5
-#undef YY_FLEX_SUBMINOR_VERSION
-#define YY_FLEX_SUBMINOR_VERSION 31
-#undef FLEX_BETA
-#define FLEX_BETA
-#undef FLEXINT_H
-#define FLEXINT_H
-#undef INT8_MIN
-#define INT8_MIN (-128)
-#undef INT16_MIN
-#define INT16_MIN (-32767-1)
-#undef INT32_MIN
-#define INT32_MIN (-2147483647-1)
-#undef INT8_MAX
-#define INT8_MAX (127)
-#undef INT16_MAX
-#define INT16_MAX (32767)
-#undef INT32_MAX
-#define INT32_MAX (2147483647)
-#undef UINT8_MAX
-#define UINT8_MAX (255U)
-#undef UINT16_MAX
-#define UINT16_MAX (65535U)
-#undef UINT32_MAX
-#define UINT32_MAX (4294967295U)
-#undef YY_USE_CONST
-#define YY_USE_CONST
-#undef YY_USE_CONST
-#define YY_USE_CONST
-#undef yyconst
-#define yyconst const
-#undef yyconst
-#define yyconst
-#undef YY_NULL
-#define YY_NULL 0
-#undef BEGIN
-#define BEGIN (yy_start) = 1 + 2 *
-#undef YY_START
-#define YY_START (((yy_start) - 1) / 2)
-#undef YYSTATE
-#define YYSTATE YY_START
-#undef YY_NEW_FILE
-#define YY_NEW_FILE yyrestart(yyin )
-#undef YY_END_OF_BUFFER_CHAR
-#define YY_END_OF_BUFFER_CHAR 0
-#undef YY_BUF_SIZE
-#define YY_BUF_SIZE 16384
-#undef YY_TYPEDEF_YY_BUFFER_STATE
-#define YY_TYPEDEF_YY_BUFFER_STATE
-#undef EOB_ACT_CONTINUE_SCAN
-#define EOB_ACT_CONTINUE_SCAN 0
-#undef EOB_ACT_END_OF_FILE
-#define EOB_ACT_END_OF_FILE 1
-#undef EOB_ACT_LAST_MATCH
-#define EOB_ACT_LAST_MATCH 2
-#undef YY_TYPEDEF_YY_SIZE_T
-#define YY_TYPEDEF_YY_SIZE_T
-#undef YY_STRUCT_YY_BUFFER_STATE
-#define YY_STRUCT_YY_BUFFER_STATE
-#undef YY_BUFFER_NEW
-#define YY_BUFFER_NEW 0
-#undef YY_BUFFER_NORMAL
-#define YY_BUFFER_NORMAL 1
-#undef YY_BUFFER_EOF_PENDING
-#define YY_BUFFER_EOF_PENDING 2
-#undef YY_CURRENT_BUFFER
-#define YY_CURRENT_BUFFER ( (yy_buffer_stack) \
-#undef YY_CURRENT_BUFFER_LVALUE
-#define YY_CURRENT_BUFFER_LVALUE (yy_buffer_stack)[(yy_buffer_stack_top)]
-#undef YY_FLUSH_BUFFER
-#define YY_FLUSH_BUFFER yy_flush_buffer(YY_CURRENT_BUFFER )
-#undef yy_new_buffer
-#define yy_new_buffer yy_create_buffer
-#undef yytext_ptr
-#define yytext_ptr yytext
-#undef YY_DO_BEFORE_ACTION
-#define YY_DO_BEFORE_ACTION \
-#undef YY_NUM_RULES
-#define YY_NUM_RULES 29
-#undef YY_END_OF_BUFFER
-#define YY_END_OF_BUFFER 30
-#undef REJECT
-#define REJECT reject_used_but_not_detected
-#undef YY_MORE_ADJ
-#define YY_MORE_ADJ 0
-#undef YY_RESTORE_YY_MORE_OFFSET
-#define YY_RESTORE_YY_MORE_OFFSET
-#undef YY_NO_UNPUT
-#define YY_NO_UNPUT
-#undef INITIAL
-#define INITIAL 0
-#undef YY_EXTRA_TYPE
-#define YY_EXTRA_TYPE void *
-#undef YY_READ_BUF_SIZE
-#define YY_READ_BUF_SIZE 8192
-#undef ECHO
-#define ECHO (void) fwrite( yytext, yyleng, 1, yyout )
-#undef YY_START_STACK_INCR
-#define YY_START_STACK_INCR 25
-#undef YY_DECL_IS_OURS
-#define YY_DECL_IS_OURS 1
-#undef YY_DECL
-#define YY_DECL int yylex (void)
-#undef YY_USER_ACTION
-#define YY_USER_ACTION
-#undef YY_BREAK
-#define YY_BREAK break;
-#undef YY_RULE_SETUP
-#define YY_RULE_SETUP \
-#undef YY_EXIT_FAILURE
-#define YY_EXIT_FAILURE 2
-#undef YYTABLES_NAME
-#define YYTABLES_NAME "yytables"
-#undef MAXPWD
-#define MAXPWD 256
-#undef ALL
-#define ALL (E_OPEN|E_CREAT|E_EXEC)
-#undef EV_EXIT
-#define EV_EXIT 01 /* exit after evaluating tree */
-#undef EV_TESTED
-#define EV_TESTED 02 /* exit status is checked; ignore -e flag */
-#undef EV_BACKCMD
-#define EV_BACKCMD 04 /* command executing within back quotes */
-#undef CMDTABLESIZE
-#define CMDTABLESIZE 31 /* should be prime */
-#undef ARB
-#define ARB 1 /* actual size determined at run time */
-#undef NEWARGS
-#define NEWARGS 5
-#undef EOF_NLEFT
-#define EOF_NLEFT -99 /* value of parsenleft when EOF pushed back */
-#undef _PATH_DEVNULL
-#define _PATH_DEVNULL "/dev/null"
-#undef PROFILE
-#define PROFILE 0
-#undef SIGSSIZE
-#define SIGSSIZE (sizeof(sigs)/sizeof(sigs[0]))
-#undef MINSIZE
-#define MINSIZE 504 /* minimum size of a block */
-#undef DEFINE_OPTIONS
-#define DEFINE_OPTIONS
-#undef EOFMARKLEN
-#define EOFMARKLEN 79
-#undef OPENBRACE
-#define OPENBRACE '{'
-#undef CLOSEBRACE
-#define CLOSEBRACE '}'
-#undef EMPTY
-#define EMPTY -2 /* marks an unused slot in redirtab */
-#undef S_DFL
-#define S_DFL 1 /* default signal handling (SIG_DFL) */
-#undef S_CATCH
-#define S_CATCH 2 /* signal is caught */
-#undef S_IGN
-#define S_IGN 3 /* signal is ignored (SIG_IGN) */
-#undef S_HARD_IGN
-#define S_HARD_IGN 4 /* signal is ignored permenantly */
-#undef S_RESET
-#define S_RESET 5 /* temporary - to reset a hard ignored sig */
-#undef OUTBUFSIZ
-#define OUTBUFSIZ BUFSIZ
-#undef BLOCK_OUT
-#define BLOCK_OUT -2 /* output to a fixed block of memory */
-#undef MEM_OUT
-#define MEM_OUT -3 /* output to dynamically allocated memory */
-#undef OUTPUT_ERR
-#define OUTPUT_ERR 01 /* error occurred on output */
-#undef TEMPSIZE
-#define TEMPSIZE 24
-#undef HAVE_VASPRINTF
-#define HAVE_VASPRINTF 1
-#undef VTABSIZE
-#define VTABSIZE 39
-#undef VTABSIZE
-#define VTABSIZE 517
-#undef main
-#define main echocmd
-
-
-
-extern void rmaliases(void);
-
-extern int loopnest; /* current loop nesting level */
-
-extern void deletefuncs(void);
-extern void hash_special_builtins(void);
-
-struct strpush {
- struct strpush *prev; /* preceding string on stack */
- char *prevstring;
- int prevnleft;
- int prevlleft;
- struct alias *ap; /* if push was associated with an alias */
-};
-
-struct parsefile {
- struct parsefile *prev; /* preceding file on stack */
- int linno; /* current line */
- int fd; /* file descriptor (or -1 if string) */
- int nleft; /* number of chars left in this line */
- int lleft; /* number of chars left in this buffer */
- char *nextc; /* next char in buffer */
- char *buf; /* input buffer */
- struct strpush *strpush; /* for pushing strings at this level */
- struct strpush basestrpush; /* so pushing one is fast */
-};
-
-extern int parselleft; /* copy of parsefile->lleft */
-extern struct parsefile basepf; /* top level input file */
-extern char basebuf[BUFSIZ]; /* buffer for top level input file */
-
-extern pid_t backgndpid; /* pid of last background process */
-extern int jobctl;
-
-extern int tokpushback; /* last token pushed back */
-extern int checkkwd; /* 1 == check for kwds, 2 == also eat newlines */
-
-struct redirtab {
- struct redirtab *next;
- short renamed[10];
-};
-
-extern struct redirtab *redirlist;
-
-extern char sigmode[NSIG]; /* current value of signal */
-
-extern char **environ;
-
-
-
-/*
- * Initialization code.
- */
-
-void
-init() {
-
- /* from exec.c: */
- {
- hash_special_builtins();
- }
-
- /* from input.c: */
- {
- basepf.nextc = basepf.buf = basebuf;
- }
-
- /* from var.c: */
- {
- char **envp;
-
- initvar();
- for (envp = environ ; *envp ; envp++) {
- if (strchr(*envp, '=')) {
- setvareq(*envp, VEXPORT|VTEXTFIXED);
- }
- }
- }
-}
-
-
-
-/*
- * This routine is called when an error or an interrupt occurs in an
- * interactive shell and control is returned to the main command loop.
- */
-
-void
-reset() {
-
- /* from eval.c: */
- {
- evalskip = 0;
- loopnest = 0;
- funcnest = 0;
- }
-
- /* from input.c: */
- {
- if (exception != EXSHELLPROC)
- parselleft = parsenleft = 0; /* clear input buffer */
- popallfiles();
- }
-
- /* from parser.c: */
- {
- tokpushback = 0;
- checkkwd = 0;
- }
-
- /* from redir.c: */
- {
- while (redirlist)
- popredir();
- }
-
- /* from output.c: */
- {
- out1 = &output;
- out2 = &errout;
- if (memout.buf != NULL) {
- ckfree(memout.buf);
- memout.buf = NULL;
- }
- }
-}
-
-
-
-/*
- * This routine is called to initialize the shell to run a shell procedure.
- */
-
-void
-initshellproc() {
-
- /* from alias.c: */
- {
- rmaliases();
- }
-
- /* from eval.c: */
- {
- exitstatus = 0;
- }
-
- /* from exec.c: */
- {
- deletefuncs();
- }
-
- /* from input.c: */
- {
- popallfiles();
- }
-
- /* from jobs.c: */
- {
- backgndpid = -1;
-#if JOBS
- jobctl = 0;
-#endif
- }
-
- /* from options.c: */
- {
- int i;
-
- for (i = 0; optlist[i].name; i++)
- optlist[i].val = 0;
- optschanged();
-
- }
-
- /* from redir.c: */
- {
- clearredir(0);
- }
-
- /* from trap.c: */
- {
- char *sm;
-
- clear_traps(0);
- for (sm = sigmode ; sm < sigmode + NSIG ; sm++) {
- if (*sm == S_IGN)
- *sm = S_HARD_IGN;
- }
- }
-
- /* from var.c: */
- {
- shprocvar();
- }
-}
diff --git a/sh/init.h b/sh/init.h
deleted file mode 100644
index 60d924e..0000000
--- a/sh/init.h
+++ /dev/null
@@ -1,39 +0,0 @@
-/* $NetBSD: init.h,v 1.10 2003/08/07 09:05:32 agc Exp $ */
-
-/*-
- * Copyright (c) 1991, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Kenneth Almquist.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * @(#)init.h 8.2 (Berkeley) 5/4/95
- */
-
-void init(void);
-void reset(void);
-void initshellproc(void);
diff --git a/sh/input.c b/sh/input.c
deleted file mode 100644
index 056ee8b..0000000
--- a/sh/input.c
+++ /dev/null
@@ -1,577 +0,0 @@
-/* $NetBSD: input.c,v 1.39 2003/08/07 09:05:32 agc Exp $ */
-
-/*-
- * Copyright (c) 1991, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Kenneth Almquist.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <sys/cdefs.h>
-#ifndef lint
-#if 0
-static char sccsid[] = "@(#)input.c 8.3 (Berkeley) 6/9/95";
-#else
-__RCSID("$NetBSD: input.c,v 1.39 2003/08/07 09:05:32 agc Exp $");
-#endif
-#endif /* not lint */
-
-#include <stdio.h> /* defines BUFSIZ */
-#include <fcntl.h>
-#include <errno.h>
-#include <unistd.h>
-#include <stdlib.h>
-#include <string.h>
-
-/*
- * This file implements the input routines used by the parser.
- */
-
-#include "shell.h"
-#include "redir.h"
-#include "syntax.h"
-#include "input.h"
-#include "output.h"
-#include "options.h"
-#include "memalloc.h"
-#include "error.h"
-#include "alias.h"
-#include "parser.h"
-#include "myhistedit.h"
-
-#ifdef WITH_LINENOISE
-#include "linenoise.h"
-#endif
-
-#define EOF_NLEFT -99 /* value of parsenleft when EOF pushed back */
-
-MKINIT
-struct strpush {
- struct strpush *prev; /* preceding string on stack */
- char *prevstring;
- int prevnleft;
- int prevlleft;
- struct alias *ap; /* if push was associated with an alias */
-};
-
-/*
- * The parsefile structure pointed to by the global variable parsefile
- * contains information about the current file being read.
- */
-
-MKINIT
-struct parsefile {
- struct parsefile *prev; /* preceding file on stack */
- int linno; /* current line */
- int fd; /* file descriptor (or -1 if string) */
- int nleft; /* number of chars left in this line */
- int lleft; /* number of chars left in this buffer */
- char *nextc; /* next char in buffer */
- char *buf; /* input buffer */
- struct strpush *strpush; /* for pushing strings at this level */
- struct strpush basestrpush; /* so pushing one is fast */
-};
-
-
-int plinno = 1; /* input line number */
-int parsenleft; /* copy of parsefile->nleft */
-MKINIT int parselleft; /* copy of parsefile->lleft */
-char *parsenextc; /* copy of parsefile->nextc */
-MKINIT struct parsefile basepf; /* top level input file */
-MKINIT char basebuf[BUFSIZ]; /* buffer for top level input file */
-struct parsefile *parsefile = &basepf; /* current input file */
-int init_editline = 0; /* editline library initialized? */
-int whichprompt; /* 1 == PS1, 2 == PS2 */
-
-#if WITH_HISTORY
-EditLine *el; /* cookie for editline package */
-#endif
-
-STATIC void pushfile(void);
-static int preadfd(void);
-
-#ifdef mkinit
-INCLUDE <stdio.h>
-INCLUDE "input.h"
-INCLUDE "error.h"
-
-INIT {
- basepf.nextc = basepf.buf = basebuf;
-}
-
-RESET {
- if (exception != EXSHELLPROC)
- parselleft = parsenleft = 0; /* clear input buffer */
- popallfiles();
-}
-
-SHELLPROC {
- popallfiles();
-}
-#endif
-
-
-/*
- * Read a line from the script.
- */
-
-char *
-pfgets(char *line, int len)
-{
- char *p = line;
- int nleft = len;
- int c;
-
- while (--nleft > 0) {
- c = pgetc_macro();
- if (c == PEOF) {
- if (p == line)
- return NULL;
- break;
- }
- *p++ = c;
- if (c == '\n')
- break;
- }
- *p = '\0';
- return line;
-}
-
-
-
-/*
- * Read a character from the script, returning PEOF on end of file.
- * Nul characters in the input are silently discarded.
- */
-
-int
-pgetc(void)
-{
- return pgetc_macro();
-}
-
-int in_interactive_mode() {
- return parsefile != NULL && parsefile->fd == 0;
-}
-
-static int
-preadfd(void)
-{
- int nr;
- char *buf = parsefile->buf;
- parsenextc = buf;
-
-retry:
-#ifdef WITH_HISTORY
- if (parsefile->fd == 0 && el) {
- static const char *rl_cp;
- static int el_len;
-
- if (rl_cp == NULL)
- rl_cp = el_gets(el, &el_len);
- if (rl_cp == NULL)
- nr = 0;
- else {
- nr = el_len;
- if (nr > BUFSIZ - 8)
- nr = BUFSIZ - 8;
- memcpy(buf, rl_cp, nr);
- if (nr != el_len) {
- el_len -= nr;
- rl_cp += nr;
- } else
- rl_cp = 0;
- }
-
- } else
-#endif
-#ifdef WITH_LINENOISE
- if (parsefile->fd == 0) {
- static char *rl_start;
- static const char *rl_cp;
- static int el_len;
-
- if (rl_cp == NULL) {
- rl_cp = rl_start = linenoise(getprompt(""));
- if (rl_cp != NULL) {
- el_len = strlen(rl_start);
- if (el_len != 0) {
- /* Add non-blank lines to history. */
- linenoiseHistoryAdd(rl_start);
- }
- out2str("\n");
- /* Client expects a newline at end of input, doesn't expect null */
- rl_start[el_len++] = '\n';
- }
- }
- if (rl_cp == NULL)
- nr = 0;
- else {
- nr = el_len;
- if (nr > BUFSIZ - 8)
- nr = BUFSIZ - 8;
- memcpy(buf, rl_cp, nr);
- if (nr != el_len) {
- el_len -= nr;
- rl_cp += nr;
- } else {
- rl_cp = 0;
- if (rl_start != NULL) {
- free(rl_start);
- rl_start = NULL;
- }
- }
- }
- } else
-#endif
- nr = read(parsefile->fd, buf, BUFSIZ - 8);
-
-
- if (nr <= 0) {
- if (nr < 0) {
- if (errno == EINTR)
- goto retry;
- if (parsefile->fd == 0 && errno == EWOULDBLOCK) {
- int flags = fcntl(0, F_GETFL, 0);
- if (flags >= 0 && flags & O_NONBLOCK) {
- flags &=~ O_NONBLOCK;
- if (fcntl(0, F_SETFL, flags) >= 0) {
- out2str("sh: turning off NDELAY mode\n");
- goto retry;
- }
- }
- }
- }
- nr = -1;
- }
- return nr;
-}
-
-/*
- * Refill the input buffer and return the next input character:
- *
- * 1) If a string was pushed back on the input, pop it;
- * 2) If an EOF was pushed back (parsenleft == EOF_NLEFT) or we are reading
- * from a string so we can't refill the buffer, return EOF.
- * 3) If the is more stuff in this buffer, use it else call read to fill it.
- * 4) Process input up to the next newline, deleting nul characters.
- */
-
-int
-preadbuffer(void)
-{
- char *p, *q;
- int more;
- int something;
- char savec;
-
- if (parsefile->strpush) {
- popstring();
- if (--parsenleft >= 0)
- return (*parsenextc++);
- }
- if (parsenleft == EOF_NLEFT || parsefile->buf == NULL)
- return PEOF;
- flushout(&output);
- flushout(&errout);
-
-again:
- if (parselleft <= 0) {
- if ((parselleft = preadfd()) == -1) {
- parselleft = parsenleft = EOF_NLEFT;
- return PEOF;
- }
- }
-
- q = p = parsenextc;
-
- /* delete nul characters */
- something = 0;
- for (more = 1; more;) {
- switch (*p) {
- case '\0':
- p++; /* Skip nul */
- goto check;
-
- case '\t':
- case ' ':
- break;
-
- case '\n':
- parsenleft = q - parsenextc;
- more = 0; /* Stop processing here */
- break;
-
- default:
- something = 1;
- break;
- }
-
- *q++ = *p++;
-check:
- if (--parselleft <= 0) {
- parsenleft = q - parsenextc - 1;
- if (parsenleft < 0)
- goto again;
- *q = '\0';
- more = 0;
- }
- }
-
- savec = *q;
- *q = '\0';
-
-#ifdef WITH_HISTORY
- if (parsefile->fd == 0 && hist && something) {
- HistEvent he;
- INTOFF;
- history(hist, &he, whichprompt == 1? H_ENTER : H_APPEND,
- parsenextc);
- INTON;
- }
-#endif
-
- if (vflag) {
- out2str(parsenextc);
- flushout(out2);
- }
-
- *q = savec;
-
- return *parsenextc++;
-}
-
-/*
- * Undo the last call to pgetc. Only one character may be pushed back.
- * PEOF may be pushed back.
- */
-
-void
-pungetc(void)
-{
- parsenleft++;
- parsenextc--;
-}
-
-/*
- * Push a string back onto the input at this current parsefile level.
- * We handle aliases this way.
- */
-void
-pushstring(char *s, int len, void *ap)
-{
- struct strpush *sp;
-
- INTOFF;
-/*dprintf("*** calling pushstring: %s, %d\n", s, len);*/
- if (parsefile->strpush) {
- sp = ckmalloc(sizeof (struct strpush));
- sp->prev = parsefile->strpush;
- parsefile->strpush = sp;
- } else
- sp = parsefile->strpush = &(parsefile->basestrpush);
- sp->prevstring = parsenextc;
- sp->prevnleft = parsenleft;
- sp->prevlleft = parselleft;
- sp->ap = (struct alias *)ap;
- if (ap)
- ((struct alias *)ap)->flag |= ALIASINUSE;
- parsenextc = s;
- parsenleft = len;
- INTON;
-}
-
-void
-popstring(void)
-{
- struct strpush *sp = parsefile->strpush;
-
- INTOFF;
- parsenextc = sp->prevstring;
- parsenleft = sp->prevnleft;
- parselleft = sp->prevlleft;
-/*dprintf("*** calling popstring: restoring to '%s'\n", parsenextc);*/
- if (sp->ap)
- sp->ap->flag &= ~ALIASINUSE;
- parsefile->strpush = sp->prev;
- if (sp != &(parsefile->basestrpush))
- ckfree(sp);
- INTON;
-}
-
-/*
- * Set the input to take input from a file. If push is set, push the
- * old input onto the stack first.
- */
-
-void
-setinputfile(const char *fname, int push)
-{
- int fd;
- int fd2;
-
- INTOFF;
- if ((fd = open(fname, O_RDONLY)) < 0)
- error("Can't open %s", fname);
- if (fd < 10) {
- fd2 = copyfd(fd, 10);
- close(fd);
- if (fd2 < 0)
- error("Out of file descriptors");
- fd = fd2;
- }
- setinputfd(fd, push);
- INTON;
-}
-
-
-/*
- * Like setinputfile, but takes an open file descriptor. Call this with
- * interrupts off.
- */
-
-void
-setinputfd(int fd, int push)
-{
- (void) fcntl(fd, F_SETFD, FD_CLOEXEC);
- if (push) {
- pushfile();
- parsefile->buf = ckmalloc(BUFSIZ);
- }
- if (parsefile->fd > 0)
- close(parsefile->fd);
- parsefile->fd = fd;
- if (parsefile->buf == NULL)
- parsefile->buf = ckmalloc(BUFSIZ);
- parselleft = parsenleft = 0;
- plinno = 1;
-}
-
-
-/*
- * Like setinputfile, but takes input from a string.
- */
-
-void
-setinputstring(char *string, int push)
-{
- INTOFF;
- if (push)
- pushfile();
- parsenextc = string;
- parselleft = parsenleft = strlen(string);
- parsefile->buf = NULL;
- plinno = 1;
- INTON;
-}
-
-
-
-/*
- * To handle the "." command, a stack of input files is used. Pushfile
- * adds a new entry to the stack and popfile restores the previous level.
- */
-
-STATIC void
-pushfile(void)
-{
- struct parsefile *pf;
-
- parsefile->nleft = parsenleft;
- parsefile->lleft = parselleft;
- parsefile->nextc = parsenextc;
- parsefile->linno = plinno;
- pf = (struct parsefile *)ckmalloc(sizeof (struct parsefile));
- pf->prev = parsefile;
- pf->fd = -1;
- pf->strpush = NULL;
- pf->basestrpush.prev = NULL;
- parsefile = pf;
-}
-
-
-void
-popfile(void)
-{
- struct parsefile *pf = parsefile;
-
- INTOFF;
- if (pf->fd >= 0)
- close(pf->fd);
- if (pf->buf)
- ckfree(pf->buf);
- while (pf->strpush)
- popstring();
- parsefile = pf->prev;
- ckfree(pf);
- parsenleft = parsefile->nleft;
- parselleft = parsefile->lleft;
- parsenextc = parsefile->nextc;
- plinno = parsefile->linno;
- INTON;
-}
-
-
-/*
- * Return to top level.
- */
-
-void
-popallfiles(void)
-{
- while (parsefile != &basepf)
- popfile();
-}
-
-
-
-/*
- * Close the file(s) that the shell is reading commands from. Called
- * after a fork is done.
- *
- * Takes one arg, vfork, which tells it to not modify its global vars
- * as it is still running in the parent.
- *
- * This code is (probably) unnecessary as the 'close on exec' flag is
- * set and should be enough. In the vfork case it is definitely wrong
- * to close the fds as another fork() may be done later to feed data
- * from a 'here' document into a pipe and we don't want to close the
- * pipe!
- */
-
-void
-closescript(int vforked)
-{
- if (vforked)
- return;
- popallfiles();
- if (parsefile->fd > 0) {
- close(parsefile->fd);
- parsefile->fd = 0;
- }
-}
diff --git a/sh/input.h b/sh/input.h
deleted file mode 100644
index 99c1b77..0000000
--- a/sh/input.h
+++ /dev/null
@@ -1,63 +0,0 @@
-/* $NetBSD: input.h,v 1.15 2003/08/07 09:05:33 agc Exp $ */
-
-/*-
- * Copyright (c) 1991, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Kenneth Almquist.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * @(#)input.h 8.2 (Berkeley) 5/4/95
- */
-
-/* PEOF (the end of file marker) is defined in syntax.h */
-
-/*
- * The input line number. Input.c just defines this variable, and saves
- * and restores it when files are pushed and popped. The user of this
- * package must set its value.
- */
-extern int plinno;
-extern int parsenleft; /* number of characters left in input buffer */
-extern char *parsenextc; /* next character in input buffer */
-extern int init_editline; /* 0 == not setup, 1 == OK, -1 == failed */
-
-int in_interactive_mode();
-char *pfgets(char *, int);
-int pgetc(void);
-int preadbuffer(void);
-void pungetc(void);
-void pushstring(char *, int, void *);
-void popstring(void);
-void setinputfile(const char *, int);
-void setinputfd(int, int);
-void setinputstring(char *, int);
-void popfile(void);
-void popallfiles(void);
-void closescript(int);
-
-#define pgetc_macro() (--parsenleft >= 0? *parsenextc++ : preadbuffer())
diff --git a/sh/jobs.c b/sh/jobs.c
deleted file mode 100644
index b9460b0..0000000
--- a/sh/jobs.c
+++ /dev/null
@@ -1,1487 +0,0 @@
-/* $NetBSD: jobs.c,v 1.62 2003/12/18 00:56:05 christos Exp $ */
-
-/*-
- * Copyright (c) 1991, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Kenneth Almquist.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <sys/cdefs.h>
-#ifndef lint
-#if 0
-static char sccsid[] = "@(#)jobs.c 8.5 (Berkeley) 5/4/95";
-#else
-__RCSID("$NetBSD: jobs.c,v 1.62 2003/12/18 00:56:05 christos Exp $");
-#endif
-#endif /* not lint */
-
-#include <fcntl.h>
-#include <signal.h>
-#include <errno.h>
-#include <unistd.h>
-#include <stdlib.h>
-#define _PATH_DEVNULL "/dev/null"
-#include <sys/types.h>
-#include <sys/param.h>
-#ifdef BSD
-#include <sys/wait.h>
-#include <sys/time.h>
-#include <sys/resource.h>
-#endif
-#include <sys/wait.h>
-#define killpg(s,i) kill(-(s),i)
-#include <sys/ioctl.h>
-
-#include "shell.h"
-#if JOBS
-#if OLD_TTY_DRIVER
-#include "sgtty.h"
-#else
-#include <termios.h>
-#endif
-#undef CEOF /* syntax.h redefines this */
-#endif
-#include "redir.h"
-#include "show.h"
-#include "main.h"
-#include "parser.h"
-#include "nodes.h"
-#include "jobs.h"
-#include "options.h"
-#include "trap.h"
-#include "syntax.h"
-#include "input.h"
-#include "output.h"
-#include "memalloc.h"
-#include "error.h"
-#include "mystring.h"
-
-// Use of process groups is disabled to allow adb shell children to terminate when the shell dies
-#define USE_PROCESS_GROUPS
-
-
-static struct job *jobtab; /* array of jobs */
-static int njobs; /* size of array */
-static int jobs_invalid; /* set in child */
-MKINIT pid_t backgndpid = -1; /* pid of last background process */
-#if JOBS
-int initialpgrp; /* pgrp of shell on invocation */
-static int curjob = -1; /* current job */
-#endif
-static int ttyfd = -1;
-
-STATIC void restartjob(struct job *);
-STATIC void freejob(struct job *);
-STATIC struct job *getjob(const char *, int);
-STATIC int dowait(int, struct job *);
-STATIC int onsigchild(void);
-STATIC int waitproc(int, struct job *, int *);
-STATIC void cmdtxt(union node *);
-STATIC void cmdlist(union node *, int);
-STATIC void cmdputs(const char *);
-
-#ifdef OLD_TTY_DRIVER
-static pid_t tcgetpgrp(int fd);
-static int tcsetpgrp(int fd, pid_t pgrp);
-
-static pid_t
-tcgetpgrp(int fd)
-{
- pid_t pgrp;
- if (ioctl(fd, TIOCGPGRP, (char *)&pgrp) == -1)
- return -1;
- else
- return pgrp;
-}
-
-static int
-tcsetpgrp(int fd, pid_tpgrp)
-{
- return ioctl(fd, TIOCSPGRP, (char *)&pgrp);
-}
-#endif
-
-/*
- * Turn job control on and off.
- *
- * Note: This code assumes that the third arg to ioctl is a character
- * pointer, which is true on Berkeley systems but not System V. Since
- * System V doesn't have job control yet, this isn't a problem now.
- */
-
-MKINIT int jobctl;
-
-void
-setjobctl(int on)
-{
-#ifdef OLD_TTY_DRIVER
- int ldisc;
-#endif
-
- if (on == jobctl || rootshell == 0)
- return;
- if (on) {
-#if defined(FIOCLEX) || defined(FD_CLOEXEC)
- int err;
- int i;
- if (ttyfd != -1)
- close(ttyfd);
- if ((ttyfd = open("/dev/tty", O_RDWR)) == -1) {
- for (i = 0; i < 3; i++) {
- if (isatty(i) && (ttyfd = dup(i)) != -1)
- break;
- }
- if (i == 3)
- goto out;
- }
- /* Move to a high fd */
- for (i = 10; i > 2; i--) {
- if ((err = fcntl(ttyfd, F_DUPFD, (1 << i) - 1)) != -1)
- break;
- }
- if (err != -1) {
- close(ttyfd);
- ttyfd = err;
- }
-#ifdef FIOCLEX
- err = ioctl(ttyfd, FIOCLEX, 0);
-#elif FD_CLOEXEC
- err = fcntl(ttyfd, F_SETFD,
- fcntl(ttyfd, F_GETFD, 0) | FD_CLOEXEC);
-#endif
- if (err == -1) {
- close(ttyfd);
- ttyfd = -1;
- goto out;
- }
-#else
- out2str("sh: Need FIOCLEX or FD_CLOEXEC to support job control");
- goto out;
-#endif
- do { /* while we are in the background */
- if ((initialpgrp = tcgetpgrp(ttyfd)) < 0) {
-out:
- out2str("sh: can't access tty; job control turned off\n");
- mflag = 0;
- return;
- }
- if (initialpgrp == -1)
- initialpgrp = getpgrp();
- else if (initialpgrp != getpgrp()) {
- killpg(0, SIGTTIN);
- continue;
- }
- } while (0);
-
-#ifdef OLD_TTY_DRIVER
- if (ioctl(ttyfd, TIOCGETD, (char *)&ldisc) < 0
- || ldisc != NTTYDISC) {
- out2str("sh: need new tty driver to run job control; job control turned off\n");
- mflag = 0;
- return;
- }
-#endif
- setsignal(SIGTSTP, 0);
- setsignal(SIGTTOU, 0);
- setsignal(SIGTTIN, 0);
-#ifdef USE_PROCESS_GROUPS
- if (getpgid(0) != rootpid && setpgid(0, rootpid) == -1)
- error("Cannot set process group (%s) at %d",
- strerror(errno), __LINE__);
- if (tcsetpgrp(ttyfd, rootpid) == -1)
- error("Cannot set tty process group (%s) at %d",
- strerror(errno), __LINE__);
-#endif
- } else { /* turning job control off */
-#ifdef USE_PROCESS_GROUPS
- if (getpgid(0) != initialpgrp && setpgid(0, initialpgrp) == -1)
- error("Cannot set process group (%s) at %d",
- strerror(errno), __LINE__);
- if (tcsetpgrp(ttyfd, initialpgrp) == -1)
- error("Cannot set tty process group (%s) at %d",
- strerror(errno), __LINE__);
-#endif
- close(ttyfd);
- ttyfd = -1;
- setsignal(SIGTSTP, 0);
- setsignal(SIGTTOU, 0);
- setsignal(SIGTTIN, 0);
- }
- jobctl = on;
-}
-
-
-#ifdef mkinit
-INCLUDE <stdlib.h>
-
-SHELLPROC {
- backgndpid = -1;
-#if JOBS
- jobctl = 0;
-#endif
-}
-
-#endif
-
-
-
-#if JOBS
-int
-fgcmd(int argc, char **argv)
-{
- struct job *jp;
- int i;
- int status;
-
- nextopt("");
- jp = getjob(*argptr, 0);
- if (jp->jobctl == 0)
- error("job not created under job control");
- out1fmt("%s", jp->ps[0].cmd);
- for (i = 1; i < jp->nprocs; i++)
- out1fmt(" | %s", jp->ps[i].cmd );
- out1c('\n');
- flushall();
-
- for (i = 0; i < jp->nprocs; i++)
- if (tcsetpgrp(ttyfd, jp->ps[i].pid) != -1)
- break;
-
- if (i >= jp->nprocs) {
- error("Cannot set tty process group (%s) at %d",
- strerror(errno), __LINE__);
- }
- restartjob(jp);
- INTOFF;
- status = waitforjob(jp);
- INTON;
- return status;
-}
-
-static void
-set_curjob(struct job *jp, int mode)
-{
- struct job *jp1, *jp2;
- int i, ji;
-
- ji = jp - jobtab;
-
- /* first remove from list */
- if (ji == curjob)
- curjob = jp->prev_job;
- else {
- for (i = 0; i < njobs; i++) {
- if (jobtab[i].prev_job != ji)
- continue;
- jobtab[i].prev_job = jp->prev_job;
- break;
- }
- }
-
- /* Then re-insert in correct position */
- switch (mode) {
- case 0: /* job being deleted */
- jp->prev_job = -1;
- break;
- case 1: /* newly created job or backgrounded job,
- put after all stopped jobs. */
- if (curjob != -1 && jobtab[curjob].state == JOBSTOPPED) {
- for (jp1 = jobtab + curjob; ; jp1 = jp2) {
- if (jp1->prev_job == -1)
- break;
- jp2 = jobtab + jp1->prev_job;
- if (jp2->state != JOBSTOPPED)
- break;
- }
- jp->prev_job = jp1->prev_job;
- jp1->prev_job = ji;
- break;
- }
- /* FALLTHROUGH */
- case 2: /* newly stopped job - becomes curjob */
- jp->prev_job = curjob;
- curjob = ji;
- break;
- }
-}
-
-int
-bgcmd(int argc, char **argv)
-{
- struct job *jp;
- int i;
-
- nextopt("");
- do {
- jp = getjob(*argptr, 0);
- if (jp->jobctl == 0)
- error("job not created under job control");
- set_curjob(jp, 1);
- out1fmt("[%ld] %s", (long)(jp - jobtab + 1), jp->ps[0].cmd);
- for (i = 1; i < jp->nprocs; i++)
- out1fmt(" | %s", jp->ps[i].cmd );
- out1c('\n');
- flushall();
- restartjob(jp);
- } while (*argptr && *++argptr);
- return 0;
-}
-
-
-STATIC void
-restartjob(struct job *jp)
-{
- struct procstat *ps;
- int i;
-
- if (jp->state == JOBDONE)
- return;
- INTOFF;
- for (i = 0; i < jp->nprocs; i++)
- if (killpg(jp->ps[i].pid, SIGCONT) != -1)
- break;
- if (i >= jp->nprocs)
- error("Cannot continue job (%s)", strerror(errno));
- for (ps = jp->ps, i = jp->nprocs ; --i >= 0 ; ps++) {
- if (WIFSTOPPED(ps->status)) {
- ps->status = -1;
- jp->state = JOBRUNNING;
- }
- }
- INTON;
-}
-#endif
-
-static void
-showjob(struct output *out, struct job *jp, int mode)
-{
- int procno;
- int st;
- struct procstat *ps;
- int col;
- char s[64];
-
-#if JOBS
- if (mode & SHOW_PGID) {
- /* just output process (group) id of pipeline */
- outfmt(out, "%ld\n", (long)jp->ps->pid);
- return;
- }
-#endif
-
- procno = jp->nprocs;
- if (!procno)
- return;
-
- if (mode & SHOW_PID)
- mode |= SHOW_MULTILINE;
-
- if ((procno > 1 && !(mode & SHOW_MULTILINE))
- || (mode & SHOW_SIGNALLED)) {
- /* See if we have more than one status to report */
- ps = jp->ps;
- st = ps->status;
- do {
- int st1 = ps->status;
- if (st1 != st)
- /* yes - need multi-line output */
- mode |= SHOW_MULTILINE;
- if (st1 == -1 || !(mode & SHOW_SIGNALLED) || WIFEXITED(st1))
- continue;
- if (WIFSTOPPED(st1) || ((st1 = WTERMSIG(st1) & 0x7f)
- && st1 != SIGINT && st1 != SIGPIPE))
- mode |= SHOW_ISSIG;
-
- } while (ps++, --procno);
- procno = jp->nprocs;
- }
-
- if (mode & SHOW_SIGNALLED && !(mode & SHOW_ISSIG)) {
- if (jp->state == JOBDONE && !(mode & SHOW_NO_FREE)) {
- TRACE(("showjob: freeing job %d\n", jp - jobtab + 1));
- freejob(jp);
- }
- return;
- }
-
- for (ps = jp->ps; --procno >= 0; ps++) { /* for each process */
- if (ps == jp->ps)
- fmtstr(s, 16, "[%ld] %c ",
- (long)(jp - jobtab + 1),
-#if JOBS
- jp == jobtab + curjob ? '+' :
- curjob != -1 && jp == jobtab +
- jobtab[curjob].prev_job ? '-' :
-#endif
- ' ');
- else
- fmtstr(s, 16, " " );
- col = strlen(s);
- if (mode & SHOW_PID) {
- fmtstr(s + col, 16, "%ld ", (long)ps->pid);
- col += strlen(s + col);
- }
- if (ps->status == -1) {
- scopy("Running", s + col);
- } else if (WIFEXITED(ps->status)) {
- st = WEXITSTATUS(ps->status);
- if (st)
- fmtstr(s + col, 16, "Done(%d)", st);
- else
- fmtstr(s + col, 16, "Done");
- } else {
-#if JOBS
- if (WIFSTOPPED(ps->status))
- st = WSTOPSIG(ps->status);
- else /* WIFSIGNALED(ps->status) */
-#endif
- st = WTERMSIG(ps->status);
- st &= 0x7f;
- if (st < NSIG && sys_siglist[st])
- scopyn(sys_siglist[st], s + col, 32);
- else
- fmtstr(s + col, 16, "Signal %d", st);
- if (WCOREDUMP(ps->status)) {
- col += strlen(s + col);
- scopyn(" (core dumped)", s + col, 64 - col);
- }
- }
- col += strlen(s + col);
- outstr(s, out);
- do {
- outc(' ', out);
- col++;
- } while (col < 30);
- outstr(ps->cmd, out);
- if (mode & SHOW_MULTILINE) {
- if (procno > 0) {
- outc(' ', out);
- outc('|', out);
- }
- } else {
- while (--procno >= 0)
- outfmt(out, " | %s", (++ps)->cmd );
- }
- outc('\n', out);
- }
- flushout(out);
- jp->changed = 0;
- if (jp->state == JOBDONE && !(mode & SHOW_NO_FREE))
- freejob(jp);
-}
-
-
-int
-jobscmd(int argc, char **argv)
-{
- int mode, m;
- int sv = jobs_invalid;
-
- jobs_invalid = 0;
- mode = 0;
- while ((m = nextopt("lp")))
- if (m == 'l')
- mode = SHOW_PID;
- else
- mode = SHOW_PGID;
- if (*argptr)
- do
- showjob(out1, getjob(*argptr,0), mode);
- while (*++argptr);
- else
- showjobs(out1, mode);
- jobs_invalid = sv;
- return 0;
-}
-
-
-/*
- * Print a list of jobs. If "change" is nonzero, only print jobs whose
- * statuses have changed since the last call to showjobs.
- *
- * If the shell is interrupted in the process of creating a job, the
- * result may be a job structure containing zero processes. Such structures
- * will be freed here.
- */
-
-void
-showjobs(struct output *out, int mode)
-{
- int jobno;
- struct job *jp;
- int silent = 0, gotpid;
-
- TRACE(("showjobs(%x) called\n", mode));
-
- /* If not even one one job changed, there is nothing to do */
- gotpid = dowait(0, NULL);
- while (dowait(0, NULL) > 0)
- continue;
-#ifdef JOBS
- /*
- * Check if we are not in our foreground group, and if not
- * put us in it.
- */
- if (mflag && gotpid != -1 && tcgetpgrp(ttyfd) != getpid()) {
- if (tcsetpgrp(ttyfd, getpid()) == -1)
- error("Cannot set tty process group (%s) at %d",
- strerror(errno), __LINE__);
- TRACE(("repaired tty process group\n"));
- silent = 1;
- }
-#endif
- if (jobs_invalid)
- return;
-
- for (jobno = 1, jp = jobtab ; jobno <= njobs ; jobno++, jp++) {
- if (!jp->used)
- continue;
- if (jp->nprocs == 0) {
- freejob(jp);
- continue;
- }
- if ((mode & SHOW_CHANGED) && !jp->changed)
- continue;
- if (silent && jp->changed) {
- jp->changed = 0;
- continue;
- }
- showjob(out, jp, mode);
- }
-}
-
-/*
- * Mark a job structure as unused.
- */
-
-STATIC void
-freejob(struct job *jp)
-{
- INTOFF;
- if (jp->ps != &jp->ps0) {
- ckfree(jp->ps);
- jp->ps = &jp->ps0;
- }
- jp->nprocs = 0;
- jp->used = 0;
-#if JOBS
- set_curjob(jp, 0);
-#endif
- INTON;
-}
-
-
-
-int
-waitcmd(int argc, char **argv)
-{
- struct job *job;
- int status, retval = 127;
- struct job *jp;
-
- nextopt("");
-
- if (!*argptr) {
- /* wait for all jobs */
- jp = jobtab;
- if (jobs_invalid)
- return 0;
- for (;;) {
- if (jp >= jobtab + njobs) {
- /* no running procs */
- return 0;
- }
- if (!jp->used || jp->state != JOBRUNNING) {
- jp++;
- continue;
- }
- if (dowait(1, (struct job *)NULL) == -1)
- return 128 + SIGINT;
- jp = jobtab;
- }
- }
-
- for (; *argptr; argptr++) {
- job = getjob(*argptr, 1);
- if (!job) {
- retval = 127;
- continue;
- }
- /* loop until process terminated or stopped */
- while (job->state == JOBRUNNING) {
- if (dowait(1, (struct job *)NULL) == -1)
- return 128 + SIGINT;
- }
- status = job->ps[job->nprocs].status;
- if (WIFEXITED(status))
- retval = WEXITSTATUS(status);
-#if JOBS
- else if (WIFSTOPPED(status))
- retval = WSTOPSIG(status) + 128;
-#endif
- else {
- /* XXX: limits number of signals */
- retval = WTERMSIG(status) + 128;
- }
- if (!iflag)
- freejob(job);
- }
- return retval;
-}
-
-
-
-int
-jobidcmd(int argc, char **argv)
-{
- struct job *jp;
- int i;
-
- nextopt("");
- jp = getjob(*argptr, 0);
- for (i = 0 ; i < jp->nprocs ; ) {
- out1fmt("%ld", (long)jp->ps[i].pid);
- out1c(++i < jp->nprocs ? ' ' : '\n');
- }
- return 0;
-}
-
-int
-getjobpgrp(const char *name)
-{
- struct job *jp;
-
- jp = getjob(name, 1);
- if (jp == 0)
- return 0;
- return -jp->ps[0].pid;
-}
-
-/*
- * Convert a job name to a job structure.
- */
-
-STATIC struct job *
-getjob(const char *name, int noerror)
-{
- int jobno = -1;
- struct job *jp;
- int pid;
- int i;
- const char *err_msg = "No such job: %s";
-
- if (name == NULL) {
-#if JOBS
- jobno = curjob;
-#endif
- err_msg = "No current job";
- } else if (name[0] == '%') {
- if (is_number(name + 1)) {
- jobno = number(name + 1) - 1;
- } else if (!name[2]) {
- switch (name[1]) {
-#if JOBS
- case 0:
- case '+':
- case '%':
- jobno = curjob;
- err_msg = "No current job";
- break;
- case '-':
- jobno = curjob;
- if (jobno != -1)
- jobno = jobtab[jobno].prev_job;
- err_msg = "No previous job";
- break;
-#endif
- default:
- goto check_pattern;
- }
- } else {
- struct job *found;
- check_pattern:
- found = NULL;
- for (jp = jobtab, i = njobs ; --i >= 0 ; jp++) {
- if (!jp->used || jp->nprocs <= 0)
- continue;
- if ((name[1] == '?'
- && strstr(jp->ps[0].cmd, name + 2))
- || prefix(name + 1, jp->ps[0].cmd)) {
- if (found) {
- err_msg = "%s: ambiguous";
- found = 0;
- break;
- }
- found = jp;
- }
- }
- if (found)
- return found;
- }
-
- } else if (is_number(name)) {
- pid = number(name);
- for (jp = jobtab, i = njobs ; --i >= 0 ; jp++) {
- if (jp->used && jp->nprocs > 0
- && jp->ps[jp->nprocs - 1].pid == pid)
- return jp;
- }
- }
-
- if (!jobs_invalid && jobno >= 0 && jobno < njobs) {
- jp = jobtab + jobno;
- if (jp->used)
- return jp;
- }
- if (!noerror)
- error(err_msg, name);
- return 0;
-}
-
-
-
-/*
- * Return a new job structure,
- */
-
-struct job *
-makejob(union node *node, int nprocs)
-{
- int i;
- struct job *jp;
-
- if (jobs_invalid) {
- for (i = njobs, jp = jobtab ; --i >= 0 ; jp++) {
- if (jp->used)
- freejob(jp);
- }
- jobs_invalid = 0;
- }
-
- for (i = njobs, jp = jobtab ; ; jp++) {
- if (--i < 0) {
- INTOFF;
- if (njobs == 0) {
- jobtab = ckmalloc(4 * sizeof jobtab[0]);
- } else {
- jp = ckmalloc((njobs + 4) * sizeof jobtab[0]);
- memcpy(jp, jobtab, njobs * sizeof jp[0]);
- /* Relocate `ps' pointers */
- for (i = 0; i < njobs; i++)
- if (jp[i].ps == &jobtab[i].ps0)
- jp[i].ps = &jp[i].ps0;
- ckfree(jobtab);
- jobtab = jp;
- }
- jp = jobtab + njobs;
- for (i = 4 ; --i >= 0 ; jobtab[njobs++].used = 0);
- INTON;
- break;
- }
- if (jp->used == 0)
- break;
- }
- INTOFF;
- jp->state = JOBRUNNING;
- jp->used = 1;
- jp->changed = 0;
- jp->nprocs = 0;
-#if JOBS
- jp->jobctl = jobctl;
- set_curjob(jp, 1);
-#endif
- if (nprocs > 1) {
- jp->ps = ckmalloc(nprocs * sizeof (struct procstat));
- } else {
- jp->ps = &jp->ps0;
- }
- INTON;
- TRACE(("makejob(0x%lx, %d) returns %%%d\n", (long)node, nprocs,
- jp - jobtab + 1));
- return jp;
-}
-
-
-/*
- * Fork off a subshell. If we are doing job control, give the subshell its
- * own process group. Jp is a job structure that the job is to be added to.
- * N is the command that will be evaluated by the child. Both jp and n may
- * be NULL. The mode parameter can be one of the following:
- * FORK_FG - Fork off a foreground process.
- * FORK_BG - Fork off a background process.
- * FORK_NOJOB - Like FORK_FG, but don't give the process its own
- * process group even if job control is on.
- *
- * When job control is turned off, background processes have their standard
- * input redirected to /dev/null (except for the second and later processes
- * in a pipeline).
- */
-
-int
-forkshell(struct job *jp, union node *n, int mode)
-{
- int pid;
-
- TRACE(("forkshell(%%%d, %p, %d) called\n", jp - jobtab, n, mode));
- switch ((pid = fork())) {
- case -1:
- TRACE(("Fork failed, errno=%d\n", errno));
- INTON;
- error("Cannot fork");
- break;
- case 0:
- forkchild(jp, n, mode, 0);
- return 0;
- default:
- return forkparent(jp, n, mode, pid);
- }
-}
-
-int
-forkparent(struct job *jp, union node *n, int mode, pid_t pid)
-{
- int pgrp;
-
- if (rootshell && mode != FORK_NOJOB && mflag) {
- if (jp == NULL || jp->nprocs == 0)
- pgrp = pid;
- else
- pgrp = jp->ps[0].pid;
-#ifdef USE_PROCESS_GROUPS
- /* This can fail because we are doing it in the child also */
- (void)setpgid(pid, pgrp);
-#endif
- }
- if (mode == FORK_BG)
- backgndpid = pid; /* set $! */
- if (jp) {
- struct procstat *ps = &jp->ps[jp->nprocs++];
- ps->pid = pid;
- ps->status = -1;
- ps->cmd[0] = 0;
- if (/* iflag && rootshell && */ n)
- commandtext(ps, n);
- }
- TRACE(("In parent shell: child = %d\n", pid));
- return pid;
-}
-
-void
-forkchild(struct job *jp, union node *n, int mode, int vforked)
-{
- int wasroot;
- int pgrp;
- const char *devnull = _PATH_DEVNULL;
- const char *nullerr = "Can't open %s";
-
- wasroot = rootshell;
- TRACE(("Child shell %d\n", getpid()));
- if (!vforked)
- rootshell = 0;
-
- closescript(vforked);
- clear_traps(vforked);
-#if JOBS
- if (!vforked)
- jobctl = 0; /* do job control only in root shell */
- if (wasroot && mode != FORK_NOJOB && mflag) {
- if (jp == NULL || jp->nprocs == 0)
- pgrp = getpid();
- else
- pgrp = jp->ps[0].pid;
-#ifdef USE_PROCESS_GROUPS
- /* This can fail because we are doing it in the parent also */
- (void)setpgid(0, pgrp);
- if (mode == FORK_FG) {
- if (tcsetpgrp(ttyfd, pgrp) == -1)
- error("Cannot set tty process group (%s) at %d",
- strerror(errno), __LINE__);
- }
-#endif
- setsignal(SIGTSTP, vforked);
- setsignal(SIGTTOU, vforked);
- } else if (mode == FORK_BG) {
- ignoresig(SIGINT, vforked);
- ignoresig(SIGQUIT, vforked);
- if ((jp == NULL || jp->nprocs == 0) &&
- ! fd0_redirected_p ()) {
- close(0);
- if (open(devnull, O_RDONLY) != 0)
- error(nullerr, devnull);
- }
- }
-#else
- if (mode == FORK_BG) {
- ignoresig(SIGINT, vforked);
- ignoresig(SIGQUIT, vforked);
- if ((jp == NULL || jp->nprocs == 0) &&
- ! fd0_redirected_p ()) {
- close(0);
- if (open(devnull, O_RDONLY) != 0)
- error(nullerr, devnull);
- }
- }
-#endif
- if (wasroot && iflag) {
- setsignal(SIGINT, vforked);
- setsignal(SIGQUIT, vforked);
- setsignal(SIGTERM, vforked);
- }
-
- if (!vforked)
- jobs_invalid = 1;
-}
-
-/*
- * Wait for job to finish.
- *
- * Under job control we have the problem that while a child process is
- * running interrupts generated by the user are sent to the child but not
- * to the shell. This means that an infinite loop started by an inter-
- * active user may be hard to kill. With job control turned off, an
- * interactive user may place an interactive program inside a loop. If
- * the interactive program catches interrupts, the user doesn't want
- * these interrupts to also abort the loop. The approach we take here
- * is to have the shell ignore interrupt signals while waiting for a
- * forground process to terminate, and then send itself an interrupt
- * signal if the child process was terminated by an interrupt signal.
- * Unfortunately, some programs want to do a bit of cleanup and then
- * exit on interrupt; unless these processes terminate themselves by
- * sending a signal to themselves (instead of calling exit) they will
- * confuse this approach.
- */
-
-int
-waitforjob(struct job *jp)
-{
-#if JOBS
- int mypgrp = getpgrp();
-#endif
- int status;
- int st;
-
- INTOFF;
- TRACE(("waitforjob(%%%d) called\n", jp - jobtab + 1));
- while (jp->state == JOBRUNNING) {
- dowait(1, jp);
- }
-#if JOBS
- if (jp->jobctl) {
- if (tcsetpgrp(ttyfd, mypgrp) == -1)
- error("Cannot set tty process group (%s) at %d",
- strerror(errno), __LINE__);
- }
- if (jp->state == JOBSTOPPED && curjob != jp - jobtab)
- set_curjob(jp, 2);
-#endif
- status = jp->ps[jp->nprocs - 1].status;
- /* convert to 8 bits */
- if (WIFEXITED(status))
- st = WEXITSTATUS(status);
-#if JOBS
- else if (WIFSTOPPED(status))
- st = WSTOPSIG(status) + 128;
-#endif
- else
- st = WTERMSIG(status) + 128;
- TRACE(("waitforjob: job %d, nproc %d, status %x, st %x\n",
- jp - jobtab + 1, jp->nprocs, status, st ));
-#if JOBS
- if (jp->jobctl) {
- /*
- * This is truly gross.
- * If we're doing job control, then we did a TIOCSPGRP which
- * caused us (the shell) to no longer be in the controlling
- * session -- so we wouldn't have seen any ^C/SIGINT. So, we
- * intuit from the subprocess exit status whether a SIGINT
- * occurred, and if so interrupt ourselves. Yuck. - mycroft
- */
- if (WIFSIGNALED(status) && WTERMSIG(status) == SIGINT)
- raise(SIGINT);
- }
-#endif
- if (! JOBS || jp->state == JOBDONE)
- freejob(jp);
- INTON;
- return st;
-}
-
-
-
-/*
- * Wait for a process to terminate.
- */
-
-STATIC int
-dowait(int block, struct job *job)
-{
- int pid;
- int status;
- struct procstat *sp;
- struct job *jp;
- struct job *thisjob;
- int done;
- int stopped;
- extern volatile char gotsig[];
-
- TRACE(("dowait(%d) called\n", block));
- do {
- pid = waitproc(block, job, &status);
- TRACE(("wait returns pid %d, status %d\n", pid, status));
- } while (pid == -1 && errno == EINTR && gotsig[SIGINT - 1] == 0);
- if (pid <= 0)
- return pid;
- INTOFF;
- thisjob = NULL;
- for (jp = jobtab ; jp < jobtab + njobs ; jp++) {
- if (jp->used) {
- done = 1;
- stopped = 1;
- for (sp = jp->ps ; sp < jp->ps + jp->nprocs ; sp++) {
- if (sp->pid == -1)
- continue;
- if (sp->pid == pid) {
- TRACE(("Job %d: changing status of proc %d from 0x%x to 0x%x\n", jp - jobtab + 1, pid, sp->status, status));
- sp->status = status;
- thisjob = jp;
- }
- if (sp->status == -1)
- stopped = 0;
- else if (WIFSTOPPED(sp->status))
- done = 0;
- }
- if (stopped) { /* stopped or done */
- int state = done ? JOBDONE : JOBSTOPPED;
- if (jp->state != state) {
- TRACE(("Job %d: changing state from %d to %d\n", jp - jobtab + 1, jp->state, state));
- jp->state = state;
-#if JOBS
- if (done)
- set_curjob(jp, 0);
-#endif
- }
- }
- }
- }
-
- if (thisjob && thisjob->state != JOBRUNNING) {
- int mode = 0;
- if (!rootshell || !iflag)
- mode = SHOW_SIGNALLED;
- if (job == thisjob)
- mode = SHOW_SIGNALLED | SHOW_NO_FREE;
- if (mode)
- showjob(out2, thisjob, mode);
- else {
- TRACE(("Not printing status, rootshell=%d, job=%p\n",
- rootshell, job));
- thisjob->changed = 1;
- }
- }
-
- INTON;
- return pid;
-}
-
-
-
-/*
- * Do a wait system call. If job control is compiled in, we accept
- * stopped processes. If block is zero, we return a value of zero
- * rather than blocking.
- *
- * System V doesn't have a non-blocking wait system call. It does
- * have a SIGCLD signal that is sent to a process when one of it's
- * children dies. The obvious way to use SIGCLD would be to install
- * a handler for SIGCLD which simply bumped a counter when a SIGCLD
- * was received, and have waitproc bump another counter when it got
- * the status of a process. Waitproc would then know that a wait
- * system call would not block if the two counters were different.
- * This approach doesn't work because if a process has children that
- * have not been waited for, System V will send it a SIGCLD when it
- * installs a signal handler for SIGCLD. What this means is that when
- * a child exits, the shell will be sent SIGCLD signals continuously
- * until is runs out of stack space, unless it does a wait call before
- * restoring the signal handler. The code below takes advantage of
- * this (mis)feature by installing a signal handler for SIGCLD and
- * then checking to see whether it was called. If there are any
- * children to be waited for, it will be.
- *
- * If neither SYSV nor BSD is defined, we don't implement nonblocking
- * waits at all. In this case, the user will not be informed when
- * a background process until the next time she runs a real program
- * (as opposed to running a builtin command or just typing return),
- * and the jobs command may give out of date information.
- */
-
-#ifdef SYSV
-STATIC int gotsigchild;
-
-STATIC int onsigchild() {
- gotsigchild = 1;
-}
-#endif
-
-
-STATIC int
-waitproc(int block, struct job *jp, int *status)
-{
-#ifdef BSD
- int flags = 0;
-
-#if JOBS
- if (jp != NULL && jp->jobctl)
- flags |= WUNTRACED;
-#endif
- if (block == 0)
- flags |= WNOHANG;
- return wait3(status, flags, (struct rusage *)NULL);
-#else
-#ifdef SYSV
- int (*save)();
-
- if (block == 0) {
- gotsigchild = 0;
- save = signal(SIGCLD, onsigchild);
- signal(SIGCLD, save);
- if (gotsigchild == 0)
- return 0;
- }
- return wait(status);
-#else
- if (block == 0)
- return 0;
- return wait(status);
-#endif
-#endif
-}
-
-/*
- * return 1 if there are stopped jobs, otherwise 0
- */
-int job_warning = 0;
-int
-stoppedjobs(void)
-{
- int jobno;
- struct job *jp;
-
- if (job_warning || jobs_invalid)
- return (0);
- for (jobno = 1, jp = jobtab; jobno <= njobs; jobno++, jp++) {
- if (jp->used == 0)
- continue;
- if (jp->state == JOBSTOPPED) {
- out2str("You have stopped jobs.\n");
- job_warning = 2;
- return (1);
- }
- }
-
- return (0);
-}
-
-/*
- * Return a string identifying a command (to be printed by the
- * jobs command).
- */
-
-STATIC char *cmdnextc;
-STATIC int cmdnleft;
-
-void
-commandtext(struct procstat *ps, union node *n)
-{
- int len;
-
- cmdnextc = ps->cmd;
- if (iflag || mflag || sizeof ps->cmd < 100)
- len = sizeof(ps->cmd);
- else
- len = sizeof(ps->cmd) / 10;
- cmdnleft = len;
- cmdtxt(n);
- if (cmdnleft <= 0) {
- char *p = ps->cmd + len - 4;
- p[0] = '.';
- p[1] = '.';
- p[2] = '.';
- p[3] = 0;
- } else
- *cmdnextc = '\0';
- TRACE(("commandtext: ps->cmd %x, end %x, left %d\n\t\"%s\"\n",
- ps->cmd, cmdnextc, cmdnleft, ps->cmd));
-}
-
-
-STATIC void
-cmdtxt(union node *n)
-{
- union node *np;
- struct nodelist *lp;
- const char *p;
- int i;
- char s[2];
-
- if (n == NULL || cmdnleft <= 0)
- return;
- switch (n->type) {
- case NSEMI:
- cmdtxt(n->nbinary.ch1);
- cmdputs("; ");
- cmdtxt(n->nbinary.ch2);
- break;
- case NAND:
- cmdtxt(n->nbinary.ch1);
- cmdputs(" && ");
- cmdtxt(n->nbinary.ch2);
- break;
- case NOR:
- cmdtxt(n->nbinary.ch1);
- cmdputs(" || ");
- cmdtxt(n->nbinary.ch2);
- break;
- case NPIPE:
- for (lp = n->npipe.cmdlist ; lp ; lp = lp->next) {
- cmdtxt(lp->n);
- if (lp->next)
- cmdputs(" | ");
- }
- break;
- case NSUBSHELL:
- cmdputs("(");
- cmdtxt(n->nredir.n);
- cmdputs(")");
- break;
- case NREDIR:
- case NBACKGND:
- cmdtxt(n->nredir.n);
- break;
- case NIF:
- cmdputs("if ");
- cmdtxt(n->nif.test);
- cmdputs("; then ");
- cmdtxt(n->nif.ifpart);
- if (n->nif.elsepart) {
- cmdputs("; else ");
- cmdtxt(n->nif.elsepart);
- }
- cmdputs("; fi");
- break;
- case NWHILE:
- cmdputs("while ");
- goto until;
- case NUNTIL:
- cmdputs("until ");
-until:
- cmdtxt(n->nbinary.ch1);
- cmdputs("; do ");
- cmdtxt(n->nbinary.ch2);
- cmdputs("; done");
- break;
- case NFOR:
- cmdputs("for ");
- cmdputs(n->nfor.var);
- cmdputs(" in ");
- cmdlist(n->nfor.args, 1);
- cmdputs("; do ");
- cmdtxt(n->nfor.body);
- cmdputs("; done");
- break;
- case NCASE:
- cmdputs("case ");
- cmdputs(n->ncase.expr->narg.text);
- cmdputs(" in ");
- for (np = n->ncase.cases; np; np = np->nclist.next) {
- cmdtxt(np->nclist.pattern);
- cmdputs(") ");
- cmdtxt(np->nclist.body);
- cmdputs(";; ");
- }
- cmdputs("esac");
- break;
- case NDEFUN:
- cmdputs(n->narg.text);
- cmdputs("() { ... }");
- break;
- case NCMD:
- cmdlist(n->ncmd.args, 1);
- cmdlist(n->ncmd.redirect, 0);
- break;
- case NARG:
- cmdputs(n->narg.text);
- break;
- case NTO:
- p = ">"; i = 1; goto redir;
- case NCLOBBER:
- p = ">|"; i = 1; goto redir;
- case NAPPEND:
- p = ">>"; i = 1; goto redir;
- case NTOFD:
- p = ">&"; i = 1; goto redir;
- case NFROM:
- p = "<"; i = 0; goto redir;
- case NFROMFD:
- p = "<&"; i = 0; goto redir;
- case NFROMTO:
- p = "<>"; i = 0; goto redir;
-redir:
- if (n->nfile.fd != i) {
- s[0] = n->nfile.fd + '0';
- s[1] = '\0';
- cmdputs(s);
- }
- cmdputs(p);
- if (n->type == NTOFD || n->type == NFROMFD) {
- s[0] = n->ndup.dupfd + '0';
- s[1] = '\0';
- cmdputs(s);
- } else {
- cmdtxt(n->nfile.fname);
- }
- break;
- case NHERE:
- case NXHERE:
- cmdputs("<<...");
- break;
- default:
- cmdputs("???");
- break;
- }
-}
-
-STATIC void
-cmdlist(union node *np, int sep)
-{
- for (; np; np = np->narg.next) {
- if (!sep)
- cmdputs(" ");
- cmdtxt(np);
- if (sep && np->narg.next)
- cmdputs(" ");
- }
-}
-
-
-STATIC void
-cmdputs(const char *s)
-{
- const char *p, *str = 0;
- char c, cc[2] = " ";
- char *nextc;
- int nleft;
- int subtype = 0;
- int quoted = 0;
- static char vstype[16][4] = { "", "}", "-", "+", "?", "=",
- "#", "##", "%", "%%" };
-
- p = s;
- nextc = cmdnextc;
- nleft = cmdnleft;
- while (nleft > 0 && (c = *p++) != 0) {
- switch (c) {
- case CTLESC:
- c = *p++;
- break;
- case CTLVAR:
- subtype = *p++;
- if ((subtype & VSTYPE) == VSLENGTH)
- str = "${#";
- else
- str = "${";
- if (!(subtype & VSQUOTE) != !(quoted & 1)) {
- quoted ^= 1;
- c = '"';
- } else
- c = *str++;
- break;
- case CTLENDVAR:
- if (quoted & 1) {
- c = '"';
- str = "}";
- } else
- c = '}';
- quoted >>= 1;
- subtype = 0;
- break;
- case CTLBACKQ:
- c = '$';
- str = "(...)";
- break;
- case CTLBACKQ+CTLQUOTE:
- c = '"';
- str = "$(...)\"";
- break;
- case CTLARI:
- c = '$';
- str = "((";
- break;
- case CTLENDARI:
- c = ')';
- str = ")";
- break;
- case CTLQUOTEMARK:
- quoted ^= 1;
- c = '"';
- break;
- case '=':
- if (subtype == 0)
- break;
- str = vstype[subtype & VSTYPE];
- if (subtype & VSNUL)
- c = ':';
- else
- c = *str++;
- if (c != '}')
- quoted <<= 1;
- break;
- case '\'':
- case '\\':
- case '"':
- case '$':
- /* These can only happen inside quotes */
- cc[0] = c;
- str = cc;
- c = '\\';
- break;
- default:
- break;
- }
- do {
- *nextc++ = c;
- } while (--nleft > 0 && str && (c = *str++));
- str = 0;
- }
- if ((quoted & 1) && nleft) {
- *nextc++ = '"';
- nleft--;
- }
- cmdnleft = nleft;
- cmdnextc = nextc;
-}
diff --git a/sh/jobs.h b/sh/jobs.h
deleted file mode 100644
index 47e76c2..0000000
--- a/sh/jobs.h
+++ /dev/null
@@ -1,106 +0,0 @@
-/* $NetBSD: jobs.h,v 1.19 2003/11/27 21:16:14 dsl Exp $ */
-
-/*-
- * Copyright (c) 1991, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Kenneth Almquist.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * @(#)jobs.h 8.2 (Berkeley) 5/4/95
- */
-
-#include "output.h"
-
-/* Mode argument to forkshell. Don't change FORK_FG or FORK_BG. */
-#define FORK_FG 0
-#define FORK_BG 1
-#define FORK_NOJOB 2
-
-/* mode flags for showjob(s) */
-#define SHOW_PGID 0x01 /* only show pgid - for jobs -p */
-#define SHOW_MULTILINE 0x02 /* one line per process */
-#define SHOW_PID 0x04 /* include process pid */
-#define SHOW_CHANGED 0x08 /* only jobs whose state has changed */
-#define SHOW_SIGNALLED 0x10 /* only if stopped/exited on signal */
-#define SHOW_ISSIG 0x20 /* job was signalled */
-#define SHOW_NO_FREE 0x40 /* do not free job */
-
-
-/*
- * A job structure contains information about a job. A job is either a
- * single process or a set of processes contained in a pipeline. In the
- * latter case, pidlist will be non-NULL, and will point to a -1 terminated
- * array of pids.
- */
-#define MAXCMDTEXT 200
-
-struct procstat {
- pid_t pid; /* process id */
- int status; /* last process status from wait() */
- char cmd[MAXCMDTEXT];/* text of command being run */
-};
-
-struct job {
- struct procstat ps0; /* status of process */
- struct procstat *ps; /* status or processes when more than one */
- int nprocs; /* number of processes */
- pid_t pgrp; /* process group of this job */
- char state;
-#define JOBRUNNING 0 /* at least one proc running */
-#define JOBSTOPPED 1 /* all procs are stopped */
-#define JOBDONE 2 /* all procs are completed */
- char used; /* true if this entry is in used */
- char changed; /* true if status has changed */
-#if JOBS
- char jobctl; /* job running under job control */
- int prev_job; /* previous job index */
-#endif
-};
-
-extern pid_t backgndpid; /* pid of last background process */
-extern int job_warning; /* user was warned about stopped jobs */
-
-void setjobctl(int);
-int fgcmd(int, char **);
-int bgcmd(int, char **);
-int jobscmd(int, char **);
-void showjobs(struct output *, int);
-int waitcmd(int, char **);
-int jobidcmd(int, char **);
-struct job *makejob(union node *, int);
-int forkshell(struct job *, union node *, int);
-void forkchild(struct job *, union node *, int, int);
-int forkparent(struct job *, union node *, int, pid_t);
-int waitforjob(struct job *);
-int stoppedjobs(void);
-void commandtext(struct procstat *, union node *);
-int getjobpgrp(const char *);
-
-#if ! JOBS
-#define setjobctl(on) /* do nothing */
-#endif
diff --git a/sh/machdep.h b/sh/machdep.h
deleted file mode 100644
index 14e803b..0000000
--- a/sh/machdep.h
+++ /dev/null
@@ -1,47 +0,0 @@
-/* $NetBSD: machdep.h,v 1.11 2003/08/07 09:05:33 agc Exp $ */
-
-/*-
- * Copyright (c) 1991, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Kenneth Almquist.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * @(#)machdep.h 8.2 (Berkeley) 5/4/95
- */
-
-/*
- * Most machines require the value returned from malloc to be aligned
- * in some way. The following macro will get this right on many machines.
- */
-
-#define SHELL_SIZE (sizeof(union {int i; char *cp; double d; }) - 1)
-/*
- * It appears that grabstackstr() will barf with such alignments
- * because stalloc() will return a string allocated in a new stackblock.
- */
-#define SHELL_ALIGN(nbytes) (((nbytes) + SHELL_SIZE) & ~SHELL_SIZE)
diff --git a/sh/main.c b/sh/main.c
deleted file mode 100644
index 43b154f..0000000
--- a/sh/main.c
+++ /dev/null
@@ -1,394 +0,0 @@
-/* $NetBSD: main.c,v 1.48 2003/09/14 12:09:29 jmmv Exp $ */
-
-/*-
- * Copyright (c) 1991, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Kenneth Almquist.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <sys/cdefs.h>
-#ifndef lint
-__COPYRIGHT("@(#) Copyright (c) 1991, 1993\n\
- The Regents of the University of California. All rights reserved.\n");
-#endif /* not lint */
-
-#ifndef lint
-#if 0
-static char sccsid[] = "@(#)main.c 8.7 (Berkeley) 7/19/95";
-#else
-__RCSID("$NetBSD: main.c,v 1.48 2003/09/14 12:09:29 jmmv Exp $");
-#endif
-#endif /* not lint */
-
-#include <errno.h>
-#include <stdio.h>
-#include <signal.h>
-#include <sys/stat.h>
-#include <unistd.h>
-#include <fcntl.h>
-
-
-#include "shell.h"
-#include "main.h"
-#include "options.h"
-#include "output.h"
-#include "parser.h"
-#include "nodes.h"
-#include "expand.h"
-#include "eval.h"
-#include "jobs.h"
-#include "input.h"
-#include "trap.h"
-#include "var.h"
-#include "show.h"
-#include "memalloc.h"
-#include "error.h"
-#include "init.h"
-#include "mystring.h"
-#include "exec.h"
-#include "cd.h"
-
-#define PROFILE 0
-
-int rootpid;
-int rootshell;
-STATIC union node *curcmd;
-STATIC union node *prevcmd;
-#if PROFILE
-short profile_buf[16384];
-extern int etext();
-#endif
-
-STATIC void read_profile(const char *);
-STATIC char *find_dot_file(char *);
-int main(int, char **);
-
-/*
- * Main routine. We initialize things, parse the arguments, execute
- * profiles if we're a login shell, and then call cmdloop to execute
- * commands. The setjmp call sets up the location to jump to when an
- * exception occurs. When an exception occurs the variable "state"
- * is used to figure out how far we had gotten.
- */
-
-int
-main(int argc, char **argv)
-{
- struct jmploc jmploc;
- struct stackmark smark;
- volatile int state;
- char *shinit;
-
-#if PROFILE
- monitor(4, etext, profile_buf, sizeof profile_buf, 50);
-#endif
- state = 0;
- if (setjmp(jmploc.loc)) {
- /*
- * When a shell procedure is executed, we raise the
- * exception EXSHELLPROC to clean up before executing
- * the shell procedure.
- */
- switch (exception) {
- case EXSHELLPROC:
- rootpid = getpid();
- rootshell = 1;
- minusc = NULL;
- state = 3;
- break;
-
- case EXEXEC:
- exitstatus = exerrno;
- break;
-
- case EXERROR:
- exitstatus = 2;
- break;
-
- default:
- break;
- }
-
- if (exception != EXSHELLPROC) {
- if (state == 0 || iflag == 0 || ! rootshell)
- exitshell(exitstatus);
- }
- reset();
- if (exception == EXINT
-#if ATTY
- && (! attyset() || equal(termval(), "emacs"))
-#endif
- ) {
- out2c('\n');
- flushout(&errout);
- }
- popstackmark(&smark);
- FORCEINTON; /* enable interrupts */
- if (state == 1)
- goto state1;
- else if (state == 2)
- goto state2;
- else if (state == 3)
- goto state3;
- else
- goto state4;
- }
- handler = &jmploc;
-#ifdef DEBUG
-#if DEBUG == 2
- debug = 1;
-#endif
- opentrace();
- trputs("Shell args: "); trargs(argv);
-#endif
- rootpid = getpid();
- rootshell = 1;
- init();
- setstackmark(&smark);
- procargs(argc, argv);
- if (argv[0] && argv[0][0] == '-') {
- state = 1;
- read_profile("/etc/profile");
-state1:
- state = 2;
- read_profile(".profile");
- }
-state2:
- state = 3;
- if (getuid() == geteuid() && getgid() == getegid()) {
- if ((shinit = lookupvar("ENV")) != NULL && *shinit != '\0') {
- state = 3;
- read_profile(shinit);
- }
- }
-state3:
- state = 4;
- if (sflag == 0 || minusc) {
- static int sigs[] = {
- SIGINT, SIGQUIT, SIGHUP,
-#ifdef SIGTSTP
- SIGTSTP,
-#endif
- SIGPIPE
- };
-#define SIGSSIZE (sizeof(sigs)/sizeof(sigs[0]))
- int i;
-
- for (i = 0; i < SIGSSIZE; i++)
- setsignal(sigs[i], 0);
- }
-
- if (minusc)
- evalstring(minusc, 0);
-
- if (sflag || minusc == NULL) {
-state4: /* XXX ??? - why isn't this before the "if" statement */
- cmdloop(1);
- }
-#if PROFILE
- monitor(0);
-#endif
- exitshell(exitstatus);
- /* NOTREACHED */
-}
-
-
-/*
- * Read and execute commands. "Top" is nonzero for the top level command
- * loop; it turns on prompting if the shell is interactive.
- */
-
-void
-cmdloop(int top)
-{
- union node *n;
- struct stackmark smark;
- int inter;
- int numeof = 0;
-
- TRACE(("cmdloop(%d) called\n", top));
- setstackmark(&smark);
- for (;;) {
- if (pendingsigs)
- dotrap();
- inter = 0;
- if (iflag && top) {
- inter = 1;
- showjobs(out2, SHOW_CHANGED);
- flushout(&errout);
- }
- n = parsecmd(inter);
- /* showtree(n); DEBUG */
- if (n == NEOF) {
- if (!top || numeof >= 50)
- break;
- if (!stoppedjobs()) {
- if (!Iflag)
- break;
- out2str("\nUse \"exit\" to leave shell.\n");
- }
- numeof++;
- } else if (n != NULL && nflag == 0) {
- job_warning = (job_warning == 2) ? 1 : 0;
- numeof = 0;
- evaltree(n, 0);
- }
- popstackmark(&smark);
- setstackmark(&smark);
- if (evalskip == SKIPFILE) {
- evalskip = 0;
- break;
- }
- }
- popstackmark(&smark);
-}
-
-
-
-/*
- * Read /etc/profile or .profile. Return on error.
- */
-
-STATIC void
-read_profile(const char *name)
-{
- int fd;
- int xflag_set = 0;
- int vflag_set = 0;
-
- INTOFF;
- if ((fd = open(name, O_RDONLY)) >= 0)
- setinputfd(fd, 1);
- INTON;
- if (fd < 0)
- return;
- /* -q turns off -x and -v just when executing init files */
- if (qflag) {
- if (xflag)
- xflag = 0, xflag_set = 1;
- if (vflag)
- vflag = 0, vflag_set = 1;
- }
- cmdloop(0);
- if (qflag) {
- if (xflag_set)
- xflag = 1;
- if (vflag_set)
- vflag = 1;
- }
- popfile();
-}
-
-
-
-/*
- * Read a file containing shell functions.
- */
-
-void
-readcmdfile(char *name)
-{
- int fd;
-
- INTOFF;
- if ((fd = open(name, O_RDONLY)) >= 0)
- setinputfd(fd, 1);
- else
- error("Can't open %s", name);
- INTON;
- cmdloop(0);
- popfile();
-}
-
-
-
-/*
- * Take commands from a file. To be compatible we should do a path
- * search for the file, which is necessary to find sub-commands.
- */
-
-
-STATIC char *
-find_dot_file(char *basename)
-{
- char *fullname;
- const char *path = pathval();
- struct stat statb;
-
- /* don't try this for absolute or relative paths */
- if (strchr(basename, '/'))
- return basename;
-
- while ((fullname = padvance(&path, basename)) != NULL) {
- if ((stat(fullname, &statb) == 0) && S_ISREG(statb.st_mode)) {
- /*
- * Don't bother freeing here, since it will
- * be freed by the caller.
- */
- return fullname;
- }
- stunalloc(fullname);
- }
-
- /* not found in the PATH */
- error("%s: not found", basename);
- /* NOTREACHED */
-}
-
-int
-dotcmd(int argc, char **argv)
-{
- exitstatus = 0;
-
- if (argc >= 2) { /* That's what SVR2 does */
- char *fullname;
- struct stackmark smark;
-
- setstackmark(&smark);
- fullname = find_dot_file(argv[1]);
- setinputfile(fullname, 1);
- commandname = fullname;
- cmdloop(0);
- popfile();
- popstackmark(&smark);
- }
- return exitstatus;
-}
-
-
-int
-exitcmd(int argc, char **argv)
-{
- if (stoppedjobs())
- return 0;
- if (argc > 1)
- exitstatus = number(argv[1]);
- exitshell(exitstatus);
- /* NOTREACHED */
-}
diff --git a/sh/main.h b/sh/main.h
deleted file mode 100644
index d198e2d..0000000
--- a/sh/main.h
+++ /dev/null
@@ -1,43 +0,0 @@
-/* $NetBSD: main.h,v 1.10 2003/08/07 09:05:34 agc Exp $ */
-
-/*-
- * Copyright (c) 1991, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Kenneth Almquist.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * @(#)main.h 8.2 (Berkeley) 5/4/95
- */
-
-extern int rootpid; /* pid of main shell */
-extern int rootshell; /* true if we aren't a child of the main shell */
-
-void readcmdfile(char *);
-void cmdloop(int);
-int dotcmd(int, char **);
-int exitcmd(int, char **);
diff --git a/sh/memalloc.c b/sh/memalloc.c
deleted file mode 100644
index 07c14db..0000000
--- a/sh/memalloc.c
+++ /dev/null
@@ -1,307 +0,0 @@
-/* $NetBSD: memalloc.c,v 1.28 2003/08/07 09:05:34 agc Exp $ */
-
-/*-
- * Copyright (c) 1991, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Kenneth Almquist.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <sys/cdefs.h>
-#ifndef lint
-#if 0
-static char sccsid[] = "@(#)memalloc.c 8.3 (Berkeley) 5/4/95";
-#else
-__RCSID("$NetBSD: memalloc.c,v 1.28 2003/08/07 09:05:34 agc Exp $");
-#endif
-#endif /* not lint */
-
-#include <stdlib.h>
-#include <unistd.h>
-
-#include "shell.h"
-#include "output.h"
-#include "memalloc.h"
-#include "error.h"
-#include "machdep.h"
-#include "mystring.h"
-
-/*
- * Like malloc, but returns an error when out of space.
- */
-
-pointer
-ckmalloc(int nbytes)
-{
- pointer p;
-
- p = malloc(nbytes);
- if (p == NULL)
- error("Out of space");
- return p;
-}
-
-
-/*
- * Same for realloc.
- */
-
-pointer
-ckrealloc(pointer p, int nbytes)
-{
- p = realloc(p, nbytes);
- if (p == NULL)
- error("Out of space");
- return p;
-}
-
-
-/*
- * Make a copy of a string in safe storage.
- */
-
-char *
-savestr(const char *s)
-{
- char *p;
-
- p = ckmalloc(strlen(s) + 1);
- scopy(s, p);
- return p;
-}
-
-
-/*
- * Parse trees for commands are allocated in lifo order, so we use a stack
- * to make this more efficient, and also to avoid all sorts of exception
- * handling code to handle interrupts in the middle of a parse.
- *
- * The size 504 was chosen because the Ultrix malloc handles that size
- * well.
- */
-
-#define MINSIZE 504 /* minimum size of a block */
-
-struct stack_block {
- struct stack_block *prev;
- char space[MINSIZE];
-};
-
-struct stack_block stackbase;
-struct stack_block *stackp = &stackbase;
-struct stackmark *markp;
-char *stacknxt = stackbase.space;
-int stacknleft = MINSIZE;
-int sstrnleft;
-int herefd = -1;
-
-pointer
-stalloc(int nbytes)
-{
- char *p;
-
- nbytes = SHELL_ALIGN(nbytes);
- if (nbytes > stacknleft) {
- int blocksize;
- struct stack_block *sp;
-
- blocksize = nbytes;
- if (blocksize < MINSIZE)
- blocksize = MINSIZE;
- INTOFF;
- sp = ckmalloc(sizeof(struct stack_block) - MINSIZE + blocksize);
- sp->prev = stackp;
- stacknxt = sp->space;
- stacknleft = blocksize;
- stackp = sp;
- INTON;
- }
- p = stacknxt;
- stacknxt += nbytes;
- stacknleft -= nbytes;
- return p;
-}
-
-
-void
-stunalloc(pointer p)
-{
- if (p == NULL) { /*DEBUG */
- write(2, "stunalloc\n", 10);
- abort();
- }
- stacknleft += stacknxt - (char *)p;
- stacknxt = p;
-}
-
-
-
-void
-setstackmark(struct stackmark *mark)
-{
- mark->stackp = stackp;
- mark->stacknxt = stacknxt;
- mark->stacknleft = stacknleft;
- mark->marknext = markp;
- markp = mark;
-}
-
-
-void
-popstackmark(struct stackmark *mark)
-{
- struct stack_block *sp;
-
- INTOFF;
- markp = mark->marknext;
- while (stackp != mark->stackp) {
- sp = stackp;
- stackp = sp->prev;
- ckfree(sp);
- }
- stacknxt = mark->stacknxt;
- stacknleft = mark->stacknleft;
- INTON;
-}
-
-
-/*
- * When the parser reads in a string, it wants to stick the string on the
- * stack and only adjust the stack pointer when it knows how big the
- * string is. Stackblock (defined in stack.h) returns a pointer to a block
- * of space on top of the stack and stackblocklen returns the length of
- * this block. Growstackblock will grow this space by at least one byte,
- * possibly moving it (like realloc). Grabstackblock actually allocates the
- * part of the block that has been used.
- */
-
-void
-growstackblock(void)
-{
- int newlen = SHELL_ALIGN(stacknleft * 2 + 100);
-
- if (stacknxt == stackp->space && stackp != &stackbase) {
- struct stack_block *oldstackp;
- struct stackmark *xmark;
- struct stack_block *sp;
-
- INTOFF;
- oldstackp = stackp;
- sp = stackp;
- stackp = sp->prev;
- sp = ckrealloc((pointer)sp,
- sizeof(struct stack_block) - MINSIZE + newlen);
- sp->prev = stackp;
- stackp = sp;
- stacknxt = sp->space;
- stacknleft = newlen;
-
- /*
- * Stack marks pointing to the start of the old block
- * must be relocated to point to the new block
- */
- xmark = markp;
- while (xmark != NULL && xmark->stackp == oldstackp) {
- xmark->stackp = stackp;
- xmark->stacknxt = stacknxt;
- xmark->stacknleft = stacknleft;
- xmark = xmark->marknext;
- }
- INTON;
- } else {
- char *oldspace = stacknxt;
- int oldlen = stacknleft;
- char *p = stalloc(newlen);
-
- (void)memcpy(p, oldspace, oldlen);
- stacknxt = p; /* free the space */
- stacknleft += newlen; /* we just allocated */
- }
-}
-
-void
-grabstackblock(int len)
-{
- len = SHELL_ALIGN(len);
- stacknxt += len;
- stacknleft -= len;
-}
-
-/*
- * The following routines are somewhat easier to use than the above.
- * The user declares a variable of type STACKSTR, which may be declared
- * to be a register. The macro STARTSTACKSTR initializes things. Then
- * the user uses the macro STPUTC to add characters to the string. In
- * effect, STPUTC(c, p) is the same as *p++ = c except that the stack is
- * grown as necessary. When the user is done, she can just leave the
- * string there and refer to it using stackblock(). Or she can allocate
- * the space for it using grabstackstr(). If it is necessary to allow
- * someone else to use the stack temporarily and then continue to grow
- * the string, the user should use grabstack to allocate the space, and
- * then call ungrabstr(p) to return to the previous mode of operation.
- *
- * USTPUTC is like STPUTC except that it doesn't check for overflow.
- * CHECKSTACKSPACE can be called before USTPUTC to ensure that there
- * is space for at least one character.
- */
-
-char *
-growstackstr(void)
-{
- int len = stackblocksize();
- if (herefd >= 0 && len >= 1024) {
- xwrite(herefd, stackblock(), len);
- sstrnleft = len - 1;
- return stackblock();
- }
- growstackblock();
- sstrnleft = stackblocksize() - len - 1;
- return stackblock() + len;
-}
-
-/*
- * Called from CHECKSTRSPACE.
- */
-
-char *
-makestrspace(void)
-{
- int len = stackblocksize() - sstrnleft;
- growstackblock();
- sstrnleft = stackblocksize() - len;
- return stackblock() + len;
-}
-
-void
-ungrabstackstr(char *s, char *p)
-{
- stacknleft += stacknxt - s;
- stacknxt = s;
- sstrnleft = stacknleft - (p - s);
-
-}
diff --git a/sh/memalloc.h b/sh/memalloc.h
deleted file mode 100644
index e793880..0000000
--- a/sh/memalloc.h
+++ /dev/null
@@ -1,77 +0,0 @@
-/* $NetBSD: memalloc.h,v 1.14 2003/08/07 09:05:34 agc Exp $ */
-
-/*-
- * Copyright (c) 1991, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Kenneth Almquist.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * @(#)memalloc.h 8.2 (Berkeley) 5/4/95
- */
-
-struct stackmark {
- struct stack_block *stackp;
- char *stacknxt;
- int stacknleft;
- struct stackmark *marknext;
-};
-
-
-extern char *stacknxt;
-extern int stacknleft;
-extern int sstrnleft;
-extern int herefd;
-
-pointer ckmalloc(int);
-pointer ckrealloc(pointer, int);
-char *savestr(const char *);
-pointer stalloc(int);
-void stunalloc(pointer);
-void setstackmark(struct stackmark *);
-void popstackmark(struct stackmark *);
-void growstackblock(void);
-void grabstackblock(int);
-char *growstackstr(void);
-char *makestrspace(void);
-void ungrabstackstr(char *, char *);
-
-
-
-#define stackblock() stacknxt
-#define stackblocksize() stacknleft
-#define STARTSTACKSTR(p) p = stackblock(), sstrnleft = stackblocksize()
-#define STPUTC(c, p) (--sstrnleft >= 0? (*p++ = (c)) : (p = growstackstr(), *p++ = (c)))
-#define CHECKSTRSPACE(n, p) { if (sstrnleft < n) p = makestrspace(); }
-#define USTPUTC(c, p) (--sstrnleft, *p++ = (c))
-#define STACKSTRNUL(p) (sstrnleft == 0? (p = growstackstr(), *p = '\0') : (*p = '\0'))
-#define STUNPUTC(p) (++sstrnleft, --p)
-#define STTOPC(p) p[-1]
-#define STADJUST(amount, p) (p += (amount), sstrnleft -= (amount))
-#define grabstackstr(p) stalloc(stackblocksize() - sstrnleft)
-
-#define ckfree(p) free((pointer)(p))
diff --git a/sh/miscbltin.c b/sh/miscbltin.c
deleted file mode 100644
index d89029a..0000000
--- a/sh/miscbltin.c
+++ /dev/null
@@ -1,445 +0,0 @@
-/* $NetBSD: miscbltin.c,v 1.34.2.1 2005/04/07 11:34:20 tron Exp $ */
-
-/*-
- * Copyright (c) 1991, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Kenneth Almquist.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <sys/cdefs.h>
-#ifndef lint
-#if 0
-static char sccsid[] = "@(#)miscbltin.c 8.4 (Berkeley) 5/4/95";
-#else
-__RCSID("$NetBSD: miscbltin.c,v 1.34.2.1 2005/04/07 11:34:20 tron Exp $");
-#endif
-#endif /* not lint */
-
-/*
- * Miscelaneous builtins.
- */
-
-#include <sys/types.h> /* quad_t */
-#include <sys/param.h> /* BSD4_4 */
-#include <sys/stat.h>
-#include <sys/time.h>
-#include <sys/resource.h>
-#include <unistd.h>
-#include <stdlib.h>
-#include <ctype.h>
-#include <errno.h>
-
-#include "shell.h"
-#include "options.h"
-#include "var.h"
-#include "output.h"
-#include "memalloc.h"
-#include "error.h"
-#include "miscbltin.h"
-#include "mystring.h"
-
-#undef rflag
-
-
-
-/*
- * The read builtin.
- * Backslahes escape the next char unless -r is specified.
- *
- * This uses unbuffered input, which may be avoidable in some cases.
- *
- * Note that if IFS=' :' then read x y should work so that:
- * 'a b' x='a', y='b'
- * ' a b ' x='a', y='b'
- * ':b' x='', y='b'
- * ':' x='', y=''
- * '::' x='', y=''
- * ': :' x='', y=''
- * ':::' x='', y='::'
- * ':b c:' x='', y='b c:'
- */
-
-int
-readcmd(int argc, char **argv)
-{
- char **ap;
- char c;
- int rflag;
- char *prompt;
- const char *ifs;
- char *p;
- int startword;
- int status;
- int i;
- int is_ifs;
- int saveall = 0;
-
- rflag = 0;
- prompt = NULL;
- while ((i = nextopt("p:r")) != '\0') {
- if (i == 'p')
- prompt = optionarg;
- else
- rflag = 1;
- }
-
- if (prompt && isatty(0)) {
- out2str(prompt);
- flushall();
- }
-
- if (*(ap = argptr) == NULL)
- error("arg count");
-
- if ((ifs = bltinlookup("IFS", 1)) == NULL)
- ifs = " \t\n";
-
- status = 0;
- startword = 2;
- STARTSTACKSTR(p);
- for (;;) {
- if (read(0, &c, 1) != 1) {
- status = 1;
- break;
- }
- if (c == '\0')
- continue;
- if (c == '\\' && !rflag) {
- if (read(0, &c, 1) != 1) {
- status = 1;
- break;
- }
- if (c != '\n')
- STPUTC(c, p);
- continue;
- }
- if (c == '\n')
- break;
- if (strchr(ifs, c))
- is_ifs = strchr(" \t\n", c) ? 1 : 2;
- else
- is_ifs = 0;
-
- if (startword != 0) {
- if (is_ifs == 1) {
- /* Ignore leading IFS whitespace */
- if (saveall)
- STPUTC(c, p);
- continue;
- }
- if (is_ifs == 2 && startword == 1) {
- /* Only one non-whitespace IFS per word */
- startword = 2;
- if (saveall)
- STPUTC(c, p);
- continue;
- }
- }
-
- if (is_ifs == 0) {
- /* append this character to the current variable */
- startword = 0;
- if (saveall)
- /* Not just a spare terminator */
- saveall++;
- STPUTC(c, p);
- continue;
- }
-
- /* end of variable... */
- startword = is_ifs;
-
- if (ap[1] == NULL) {
- /* Last variable needs all IFS chars */
- saveall++;
- STPUTC(c, p);
- continue;
- }
-
- STACKSTRNUL(p);
- setvar(*ap, stackblock(), 0);
- ap++;
- STARTSTACKSTR(p);
- }
- STACKSTRNUL(p);
-
- /* Remove trailing IFS chars */
- for (; stackblock() <= --p; *p = 0) {
- if (!strchr(ifs, *p))
- break;
- if (strchr(" \t\n", *p))
- /* Always remove whitespace */
- continue;
- if (saveall > 1)
- /* Don't remove non-whitespace unless it was naked */
- break;
- }
- setvar(*ap, stackblock(), 0);
-
- /* Set any remaining args to "" */
- while (*++ap != NULL)
- setvar(*ap, nullstr, 0);
- return status;
-}
-
-
-
-int
-umaskcmd(int argc, char **argv)
-{
- char *ap;
- int mask;
- int i;
- int symbolic_mode = 0;
-
- while ((i = nextopt("S")) != '\0') {
- symbolic_mode = 1;
- }
-
- INTOFF;
- mask = umask(0);
- umask(mask);
- INTON;
-
- if ((ap = *argptr) == NULL) {
- if (symbolic_mode) {
- char u[4], g[4], o[4];
-
- i = 0;
- if ((mask & S_IRUSR) == 0)
- u[i++] = 'r';
- if ((mask & S_IWUSR) == 0)
- u[i++] = 'w';
- if ((mask & S_IXUSR) == 0)
- u[i++] = 'x';
- u[i] = '\0';
-
- i = 0;
- if ((mask & S_IRGRP) == 0)
- g[i++] = 'r';
- if ((mask & S_IWGRP) == 0)
- g[i++] = 'w';
- if ((mask & S_IXGRP) == 0)
- g[i++] = 'x';
- g[i] = '\0';
-
- i = 0;
- if ((mask & S_IROTH) == 0)
- o[i++] = 'r';
- if ((mask & S_IWOTH) == 0)
- o[i++] = 'w';
- if ((mask & S_IXOTH) == 0)
- o[i++] = 'x';
- o[i] = '\0';
-
- out1fmt("u=%s,g=%s,o=%s\n", u, g, o);
- } else {
- out1fmt("%.4o\n", mask);
- }
- } else {
- if (isdigit((unsigned char)*ap)) {
- mask = 0;
- do {
- if (*ap >= '8' || *ap < '0')
- error("Illegal number: %s", argv[1]);
- mask = (mask << 3) + (*ap - '0');
- } while (*++ap != '\0');
- umask(mask);
- } else
- error("Illegal mode: %s", ap);
- }
- return 0;
-}
-
-#if 1
-/*
- * ulimit builtin
- *
- * This code, originally by Doug Gwyn, Doug Kingston, Eric Gisin, and
- * Michael Rendell was ripped from pdksh 5.0.8 and hacked for use with
- * ash by J.T. Conklin.
- *
- * Public domain.
- */
-
-struct limits {
- const char *name;
- int cmd;
- int factor; /* multiply by to get rlim_{cur,max} values */
- char option;
-};
-
-static const struct limits limits[] = {
-#ifdef RLIMIT_CPU
- { "time(seconds)", RLIMIT_CPU, 1, 't' },
-#endif
-#ifdef RLIMIT_FSIZE
- { "file(blocks)", RLIMIT_FSIZE, 512, 'f' },
-#endif
-#ifdef RLIMIT_DATA
- { "data(kbytes)", RLIMIT_DATA, 1024, 'd' },
-#endif
-#ifdef RLIMIT_STACK
- { "stack(kbytes)", RLIMIT_STACK, 1024, 's' },
-#endif
-#ifdef RLIMIT_CORE
- { "coredump(blocks)", RLIMIT_CORE, 512, 'c' },
-#endif
-#ifdef RLIMIT_RSS
- { "memory(kbytes)", RLIMIT_RSS, 1024, 'm' },
-#endif
-#ifdef RLIMIT_MEMLOCK
- { "locked memory(kbytes)", RLIMIT_MEMLOCK, 1024, 'l' },
-#endif
-#ifdef RLIMIT_NPROC
- { "process(processes)", RLIMIT_NPROC, 1, 'p' },
-#endif
-#ifdef RLIMIT_NOFILE
- { "nofiles(descriptors)", RLIMIT_NOFILE, 1, 'n' },
-#endif
-#ifdef RLIMIT_VMEM
- { "vmemory(kbytes)", RLIMIT_VMEM, 1024, 'v' },
-#endif
-#ifdef RLIMIT_SWAP
- { "swap(kbytes)", RLIMIT_SWAP, 1024, 'w' },
-#endif
-#ifdef RLIMIT_SBSIZE
- { "sbsize(bytes)", RLIMIT_SBSIZE, 1, 'b' },
-#endif
- { (char *) 0, 0, 0, '\0' }
-};
-
-int
-ulimitcmd(int argc, char **argv)
-{
- int c;
- rlim_t val = 0;
- enum { SOFT = 0x1, HARD = 0x2 }
- how = SOFT | HARD;
- const struct limits *l;
- int set, all = 0;
- int optc, what;
- struct rlimit limit;
-
- what = 'f';
- while ((optc = nextopt("HSabtfdsmcnpl")) != '\0')
- switch (optc) {
- case 'H':
- how = HARD;
- break;
- case 'S':
- how = SOFT;
- break;
- case 'a':
- all = 1;
- break;
- default:
- what = optc;
- }
-
- for (l = limits; l->name && l->option != what; l++)
- ;
- if (!l->name)
- error("internal error (%c)", what);
-
- set = *argptr ? 1 : 0;
- if (set) {
- char *p = *argptr;
-
- if (all || argptr[1])
- error("too many arguments");
- if (strcmp(p, "unlimited") == 0)
- val = RLIM_INFINITY;
- else {
- val = (rlim_t) 0;
-
- while ((c = *p++) >= '0' && c <= '9')
- {
- val = (val * 10) + (long)(c - '0');
- if ((long)val < 0)
- break;
- }
- if (c)
- error("bad number");
- val *= l->factor;
- }
- }
- if (all) {
- for (l = limits; l->name; l++) {
- getrlimit(l->cmd, &limit);
- if (how & SOFT)
- val = limit.rlim_cur;
- else if (how & HARD)
- val = limit.rlim_max;
-
- out1fmt("%-20s ", l->name);
- if (val == RLIM_INFINITY)
- out1fmt("unlimited\n");
- else
- {
- val /= l->factor;
-#ifdef BSD4_4
- out1fmt("%lld\n", (long long) val);
-#else
- out1fmt("%ld\n", (long) val);
-#endif
- }
- }
- return 0;
- }
-
- getrlimit(l->cmd, &limit);
- if (set) {
- if (how & HARD)
- limit.rlim_max = val;
- if (how & SOFT)
- limit.rlim_cur = val;
- if (setrlimit(l->cmd, &limit) < 0)
- error("error setting limit (%s)", strerror(errno));
- } else {
- if (how & SOFT)
- val = limit.rlim_cur;
- else if (how & HARD)
- val = limit.rlim_max;
-
- if (val == RLIM_INFINITY)
- out1fmt("unlimited\n");
- else
- {
- val /= l->factor;
-#ifdef BSD4_4
- out1fmt("%lld\n", (long long) val);
-#else
- out1fmt("%ld\n", (long) val);
-#endif
- }
- }
- return 0;
-}
-#endif
diff --git a/sh/miscbltin.h b/sh/miscbltin.h
deleted file mode 100644
index 4c12c82..0000000
--- a/sh/miscbltin.h
+++ /dev/null
@@ -1,31 +0,0 @@
-/* $NetBSD: miscbltin.h,v 1.3 2003/08/21 17:57:53 christos Exp $ */
-
-/*
- * Copyright (c) 1997 Christos Zoulas. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. The name of the author may not be used to endorse or promote products
- * derived from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
- * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-int readcmd(int, char **);
-int umaskcmd(int, char **);
-int ulimitcmd(int, char **);
diff --git a/sh/mkbuiltins b/sh/mkbuiltins
deleted file mode 100644
index 5b19269..0000000
--- a/sh/mkbuiltins
+++ /dev/null
@@ -1,136 +0,0 @@
-#!/bin/sh -
-# $NetBSD: mkbuiltins,v 1.21 2004/06/06 07:03:11 christos Exp $
-#
-# Copyright (c) 1991, 1993
-# The Regents of the University of California. All rights reserved.
-#
-# This code is derived from software contributed to Berkeley by
-# Kenneth Almquist.
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions
-# are met:
-# 1. Redistributions of source code must retain the above copyright
-# notice, this list of conditions and the following disclaimer.
-# 2. Redistributions in binary form must reproduce the above copyright
-# notice, this list of conditions and the following disclaimer in the
-# documentation and/or other materials provided with the distribution.
-# 3. Neither the name of the University nor the names of its contributors
-# may be used to endorse or promote products derived from this software
-# without specific prior written permission.
-#
-# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
-# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
-# ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
-# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
-# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
-# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
-# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
-# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
-# SUCH DAMAGE.
-#
-# @(#)mkbuiltins 8.2 (Berkeley) 5/4/95
-
-havehist=1
-if [ "X$1" = "X-h" ]; then
- havehist=0
- shift
-fi
-
-shell=$1
-builtins=$2
-objdir=$3
-
-havejobs=0
-if grep '^#define JOBS[ ]*1' ${shell} > /dev/null
-then
- havejobs=1
-fi
-
-exec <$builtins 3> ${objdir}/builtins.c 4> ${objdir}/builtins.h
-
-echo '/*
- * This file was generated by the mkbuiltins program.
- */
-
-#include "shell.h"
-#include "builtins.h"
-
-const struct builtincmd builtincmd[] = {
-' >&3
-
-echo '/*
- * This file was generated by the mkbuiltins program.
- */
-
-#include <sys/cdefs.h>
-
-struct builtincmd {
- const char *name;
- int (*builtin)(int, char **);
-};
-
-extern const struct builtincmd builtincmd[];
-extern const struct builtincmd splbltincmd[];
-
-' >&4
-
-specials=
-
-while read line
-do
- set -- $line
- [ -z "$1" ] && continue
- case "$1" in
- \#if*|\#def*|\#end*)
- echo $line >&3
- echo $line >&4
- continue
- ;;
- esac
- l1="${line###}"
- [ "$l1" != "$line" ] && continue
-
-
- func=$1
- shift
- [ x"$1" = x'-j' ] && {
- [ $havejobs = 0 ] && continue
- shift
- }
- [ x"$1" = x'-h' ] && {
- [ $havehist = 0 ] && continue
- shift
- }
- echo 'int '"$func"'(int, char **);' >&4
- while
- [ $# != 0 -a "$1" != '#' ]
- do
- [ "$1" = '-s' ] && {
- specials="$specials $2 $func"
- shift 2
- continue;
- }
- [ "$1" = '-u' ] && shift
- echo ' { "'$1'", '"$func"' },' >&3
- shift
- done
-done
-
-echo ' { 0, 0 },' >&3
-echo '};' >&3
-echo >&3
-echo 'const struct builtincmd splbltincmd[] = {' >&3
-
-set -- $specials
-while
- [ $# != 0 ]
-do
- echo ' { "'$1'", '"$2"' },' >&3
- shift 2
-done
-
-echo ' { 0, 0 },' >&3
-echo "};" >&3
diff --git a/sh/mkinit.sh b/sh/mkinit.sh
deleted file mode 100644
index cae27dd..0000000
--- a/sh/mkinit.sh
+++ /dev/null
@@ -1,197 +0,0 @@
-#! /bin/sh
-# $NetBSD: mkinit.sh,v 1.2 2004/06/15 23:09:54 dsl Exp $
-
-# Copyright (c) 2003 The NetBSD Foundation, Inc.
-# All rights reserved.
-#
-# This code is derived from software contributed to The NetBSD Foundation
-# by David Laight.
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions
-# are met:
-# 1. Redistributions of source code must retain the above copyright
-# notice, this list of conditions and the following disclaimer.
-# 2. Redistributions in binary form must reproduce the above copyright
-# notice, this list of conditions and the following disclaimer in the
-# documentation and/or other materials provided with the distribution.
-# 3. Neither the name of The NetBSD Foundation nor the names of its
-# contributors may be used to endorse or promote products derived
-# from this software without specific prior written permission.
-#
-# THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
-# ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
-# TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
-# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
-# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
-# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
-# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
-# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
-# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
-# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
-# POSSIBILITY OF SUCH DAMAGE.
-
-srcs="$*"
-
-nl='
-'
-openparen='('
-backslash='\'
-
-includes=' "shell.h" "mystring.h" "init.h" '
-defines=
-decles=
-event_init=
-event_reset=
-event_shellproc=
-
-for src in $srcs; do
- exec <$src
- decnl="$nl"
- while IFS=; read -r line; do
- [ "$line" = x ]
- case "$line " in
- INIT["{ "]* ) event=init;;
- RESET["{ "]* ) event=reset;;
- SHELLPROC["{ "]* ) event=shellproc;;
- INCLUDE[\ \ ]* )
- IFS=' '
- set -- $line
- # ignore duplicates
- [ "${includes}" != "${includes%* $2 }" ] && continue
- includes="$includes$2 "
- continue
- ;;
- MKINIT\ )
- # struct declaration
- decles="$decles$nl"
- while
- read -r line
- decles="${decles}${line}${nl}"
- [ "$line" != "};" ]
- do
- :
- done
- decnl="$nl"
- continue
- ;;
- MKINIT["{ "]* )
- # strip initialiser
- def=${line#MKINIT}
- comment="${def#*;}"
- def="${def%;$comment}"
- def="${def%%=*}"
- def="${def% }"
- decles="${decles}${decnl}extern${def};${comment}${nl}"
- decnl=
- continue
- ;;
- \#define[\ \ ]* )
- IFS=' '
- set -- $line
- # Ignore those with arguments
- [ "$2" = "${2##*$openparen}" ] || continue
- # and multiline definitions
- [ "$line" = "${line%$backslash}" ] || continue
- defines="${defines}#undef $2${nl}${line}${nl}"
- continue
- ;;
- * ) continue;;
- esac
- # code for events
- ev="${nl} /* from $src: */${nl} {${nl}"
- while
- read -r line
- [ "$line" != "}" ]
- do
- # The C program indented by an extra 6 chars using
- # tabs then spaces. I need to compare the output :-(
- indent=6
- while
- l=${line# }
- [ "$l" != "$line" ]
- do
- indent=$(($indent + 8))
- line="$l"
- done
- while
- l=${line# }
- [ "$l" != "$line" ]
- do
- indent=$(($indent + 1))
- line="$l"
- done
- [ -z "$line" -o "$line" != "${line###}" ] && indent=0
- while
- [ $indent -ge 8 ]
- do
- ev="$ev "
- indent="$(($indent - 8))"
- done
- while
- [ $indent -gt 0 ]
- do
- ev="$ev "
- indent="$(($indent - 1))"
- done
- ev="${ev}${line}${nl}"
- done
- ev="${ev} }${nl}"
- eval event_$event=\"\$event_$event\$ev\"
- done
-done
-
-exec >init.c.tmp
-
-echo "/*"
-echo " * This file was generated by the mkinit program."
-echo " */"
-echo
-
-IFS=' '
-for f in $includes; do
- echo "#include $f"
-done
-
-echo
-echo
-echo
-echo "$defines"
-echo
-echo "$decles"
-echo
-echo
-echo "/*"
-echo " * Initialization code."
-echo " */"
-echo
-echo "void"
-echo "init() {"
-echo "${event_init%$nl}"
-echo "}"
-echo
-echo
-echo
-echo "/*"
-echo " * This routine is called when an error or an interrupt occurs in an"
-echo " * interactive shell and control is returned to the main command loop."
-echo " */"
-echo
-echo "void"
-echo "reset() {"
-echo "${event_reset%$nl}"
-echo "}"
-echo
-echo
-echo
-echo "/*"
-echo " * This routine is called to initialize the shell to run a shell procedure."
-echo " */"
-echo
-echo "void"
-echo "initshellproc() {"
-echo "${event_shellproc%$nl}"
-echo "}"
-
-exec >&-
-mv init.c.tmp init.c
diff --git a/sh/mknodes.sh b/sh/mknodes.sh
deleted file mode 100644
index 54d2e3d..0000000
--- a/sh/mknodes.sh
+++ /dev/null
@@ -1,217 +0,0 @@
-#! /bin/sh
-# $NetBSD: mknodes.sh,v 1.1 2004/01/16 23:24:38 dsl Exp $
-
-# Copyright (c) 2003 The NetBSD Foundation, Inc.
-# All rights reserved.
-#
-# This code is derived from software contributed to The NetBSD Foundation
-# by David Laight.
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions
-# are met:
-# 1. Redistributions of source code must retain the above copyright
-# notice, this list of conditions and the following disclaimer.
-# 2. Redistributions in binary form must reproduce the above copyright
-# notice, this list of conditions and the following disclaimer in the
-# documentation and/or other materials provided with the distribution.
-# 3. Neither the name of The NetBSD Foundation nor the names of its
-# contributors may be used to endorse or promote products derived
-# from this software without specific prior written permission.
-#
-# THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
-# ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
-# TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
-# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
-# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
-# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
-# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
-# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
-# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
-# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
-# POSSIBILITY OF SUCH DAMAGE.
-
-nodetypes=$1
-nodes_pat=$2
-objdir="$3"
-
-exec <$nodetypes
-exec >$objdir/nodes.h.tmp
-
-echo "/*"
-echo " * This file was generated by mknodes.sh"
-echo " */"
-echo
-
-tagno=0
-while IFS=; read -r line; do
- line="${line%%#*}"
- IFS=' '
- set -- $line
- IFS=
- [ -z "$2" ] && continue
- case "$line" in
- [" "]* )
- IFS=' '
- [ $field = 0 ] && struct_list="$struct_list $struct"
- eval field_${struct}_$field=\"\$*\"
- eval numfld_$struct=\$field
- field=$(($field + 1))
- ;;
- * )
- define=$1
- struct=$2
- echo "#define $define $tagno"
- tagno=$(($tagno + 1))
- eval define_$struct=\"\$define_$struct \$define\"
- struct_define="$struct_define $struct"
- field=0
- ;;
- esac
-done
-
-echo
-
-IFS=' '
-for struct in $struct_list; do
- echo
- echo
- echo "struct $struct {"
- field=0
- while
- eval line=\"\$field_${struct}_$field\"
- field=$(($field + 1))
- [ -n "$line" ]
- do
- IFS=' '
- set -- $line
- name=$1
- case $2 in
- nodeptr ) type="union node *";;
- nodelist ) type="struct nodelist *";;
- string ) type="char *";;
- int ) type="int ";;
- * ) name=; shift 2; type="$*";;
- esac
- echo " $type$name;"
- done
- echo "};"
-done
-
-echo
-echo
-echo "union node {"
-echo " int type;"
-for struct in $struct_list; do
- echo " struct $struct $struct;"
-done
-echo "};"
-echo
-echo
-echo "struct nodelist {"
-echo " struct nodelist *next;"
-echo " union node *n;"
-echo "};"
-echo
-echo
-echo "union node *copyfunc(union node *);"
-echo "void freefunc(union node *);"
-
-mv $objdir/nodes.h.tmp $objdir/nodes.h || exit 1
-
-exec <$nodes_pat
-exec >$objdir/nodes.c.tmp
-
-echo "/*"
-echo " * This file was generated by mknodes.sh"
-echo " */"
-echo
-
-while IFS=; read -r line; do
- IFS=' '
- set -- $line
- IFS=
- case "$1" in
- '%SIZES' )
- echo "static const short nodesize[$tagno] = {"
- IFS=' '
- for struct in $struct_define; do
- echo " SHELL_ALIGN(sizeof (struct $struct)),"
- done
- echo "};"
- ;;
- '%CALCSIZE' )
- echo " if (n == NULL)"
- echo " return;"
- echo " funcblocksize += nodesize[n->type];"
- echo " switch (n->type) {"
- IFS=' '
- for struct in $struct_list; do
- eval defines=\"\$define_$struct\"
- for define in $defines; do
- echo " case $define:"
- done
- eval field=\$numfld_$struct
- while
- [ $field != 0 ]
- do
- eval line=\"\$field_${struct}_$field\"
- field=$(($field - 1))
- IFS=' '
- set -- $line
- name=$1
- cl=")"
- case $2 in
- nodeptr ) fn=calcsize;;
- nodelist ) fn=sizenodelist;;
- string ) fn="funcstringsize += strlen"
- cl=") + 1";;
- * ) continue;;
- esac
- echo " ${fn}(n->$struct.$name${cl};"
- done
- echo " break;"
- done
- echo " };"
- ;;
- '%COPY' )
- echo " if (n == NULL)"
- echo " return NULL;"
- echo " new = funcblock;"
- echo " funcblock = (char *) funcblock + nodesize[n->type];"
- echo " switch (n->type) {"
- IFS=' '
- for struct in $struct_list; do
- eval defines=\"\$define_$struct\"
- for define in $defines; do
- echo " case $define:"
- done
- eval field=\$numfld_$struct
- while
- [ $field != 0 ]
- do
- eval line=\"\$field_${struct}_$field\"
- field=$(($field - 1))
- IFS=' '
- set -- $line
- name=$1
- case $2 in
- nodeptr ) fn="copynode(";;
- nodelist ) fn="copynodelist(";;
- string ) fn="nodesavestr(";;
- int ) fn=;;
- * ) continue;;
- esac
- f="$struct.$name"
- echo " new->$f = ${fn}n->$f${fn:+)};"
- done
- echo " break;"
- done
- echo " };"
- echo " new->type = n->type;"
- ;;
- * ) echo "$line";;
- esac
-done
-
-mv $objdir/nodes.c.tmp $objdir/nodes.c || exit 1
diff --git a/sh/mktokens b/sh/mktokens
deleted file mode 100644
index 25f2e6e..0000000
--- a/sh/mktokens
+++ /dev/null
@@ -1,92 +0,0 @@
-#!/bin/sh -
-# $NetBSD: mktokens,v 1.10 2003/08/22 11:22:23 agc Exp $
-#
-# Copyright (c) 1991, 1993
-# The Regents of the University of California. All rights reserved.
-#
-# This code is derived from software contributed to Berkeley by
-# Kenneth Almquist.
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions
-# are met:
-# 1. Redistributions of source code must retain the above copyright
-# notice, this list of conditions and the following disclaimer.
-# 2. Redistributions in binary form must reproduce the above copyright
-# notice, this list of conditions and the following disclaimer in the
-# documentation and/or other materials provided with the distribution.
-# 3. Neither the name of the University nor the names of its contributors
-# may be used to endorse or promote products derived from this software
-# without specific prior written permission.
-#
-# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
-# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
-# ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
-# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
-# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
-# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
-# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
-# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
-# SUCH DAMAGE.
-#
-# @(#)mktokens 8.1 (Berkeley) 5/31/93
-
-# The following is a list of tokens. The second column is nonzero if the
-# token marks the end of a list. The third column is the name to print in
-# error messages.
-
-cat > /tmp/ka$$ <<\!
-TEOF 1 end of file
-TNL 0 newline
-TSEMI 0 ";"
-TBACKGND 0 "&"
-TAND 0 "&&"
-TOR 0 "||"
-TPIPE 0 "|"
-TLP 0 "("
-TRP 1 ")"
-TENDCASE 1 ";;"
-TENDBQUOTE 1 "`"
-TREDIR 0 redirection
-TWORD 0 word
-TIF 0 "if"
-TTHEN 1 "then"
-TELSE 1 "else"
-TELIF 1 "elif"
-TFI 1 "fi"
-TWHILE 0 "while"
-TUNTIL 0 "until"
-TFOR 0 "for"
-TDO 1 "do"
-TDONE 1 "done"
-TBEGIN 0 "{"
-TEND 1 "}"
-TCASE 0 "case"
-TESAC 1 "esac"
-TNOT 0 "!"
-!
-nl=`wc -l /tmp/ka$$`
-exec > token.h
-awk '{print "#define " $1 " " NR-1}' /tmp/ka$$
-echo '
-/* Array indicating which tokens mark the end of a list */
-const char tokendlist[] = {'
-awk '{print "\t" $2 ","}' /tmp/ka$$
-echo '};
-
-const char *const tokname[] = {'
-sed -e 's/"/\\"/g' \
- -e 's/[^ ]*[ ][ ]*[^ ]*[ ][ ]*\(.*\)/ "\1",/' \
- /tmp/ka$$
-echo '};
-'
-sed 's/"//g' /tmp/ka$$ | awk '
-/TIF/{print "#define KWDOFFSET " NR-1; print "";
- print "const char *const parsekwd[] = {"}
-/TIF/,/neverfound/{print " \"" $3 "\","}'
-echo ' 0
-};'
-
-rm /tmp/ka$$
diff --git a/sh/myhistedit.h b/sh/myhistedit.h
deleted file mode 100644
index 603a27b..0000000
--- a/sh/myhistedit.h
+++ /dev/null
@@ -1,49 +0,0 @@
-/* $NetBSD: myhistedit.h,v 1.10 2003/08/07 09:05:35 agc Exp $ */
-
-/*-
- * Copyright (c) 1993
- * The Regents of the University of California. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * @(#)myhistedit.h 8.2 (Berkeley) 5/4/95
- */
-
-#ifdef WITH_HISTORY
-#include <histedit.h>
-
-extern History *hist;
-extern EditLine *el;
-extern int displayhist;
-
-void histedit(void);
-void sethistsize(const char *);
-void setterm(const char *);
-int histcmd(int, char **);
-int inputrc(int, char **);
-int not_fcnumber(char *);
-int str_to_event(const char *, int);
-#endif
-
diff --git a/sh/mystring.c b/sh/mystring.c
deleted file mode 100644
index aecf83e..0000000
--- a/sh/mystring.c
+++ /dev/null
@@ -1,133 +0,0 @@
-/* $NetBSD: mystring.c,v 1.16 2003/08/07 09:05:35 agc Exp $ */
-
-/*-
- * Copyright (c) 1991, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Kenneth Almquist.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <sys/cdefs.h>
-#ifndef lint
-#if 0
-static char sccsid[] = "@(#)mystring.c 8.2 (Berkeley) 5/4/95";
-#else
-__RCSID("$NetBSD: mystring.c,v 1.16 2003/08/07 09:05:35 agc Exp $");
-#endif
-#endif /* not lint */
-
-/*
- * String functions.
- *
- * equal(s1, s2) Return true if strings are equal.
- * scopy(from, to) Copy a string.
- * scopyn(from, to, n) Like scopy, but checks for overflow.
- * number(s) Convert a string of digits to an integer.
- * is_number(s) Return true if s is a string of digits.
- */
-
-#include <stdlib.h>
-#include "shell.h"
-#include "syntax.h"
-#include "error.h"
-#include "mystring.h"
-
-
-char nullstr[1]; /* zero length string */
-
-/*
- * equal - #defined in mystring.h
- */
-
-/*
- * scopy - #defined in mystring.h
- */
-
-
-/*
- * scopyn - copy a string from "from" to "to", truncating the string
- * if necessary. "To" is always nul terminated, even if
- * truncation is performed. "Size" is the size of "to".
- */
-
-void
-scopyn(const char *from, char *to, int size)
-{
-
- while (--size > 0) {
- if ((*to++ = *from++) == '\0')
- return;
- }
- *to = '\0';
-}
-
-
-/*
- * prefix -- see if pfx is a prefix of string.
- */
-
-int
-prefix(const char *pfx, const char *string)
-{
- while (*pfx) {
- if (*pfx++ != *string++)
- return 0;
- }
- return 1;
-}
-
-
-/*
- * Convert a string of digits to an integer, printing an error message on
- * failure.
- */
-
-int
-number(const char *s)
-{
-
- if (! is_number(s))
- error("Illegal number: %s", s);
- return atoi(s);
-}
-
-
-
-/*
- * Check for a valid number. This should be elsewhere.
- */
-
-int
-is_number(const char *p)
-{
- do {
- if (! is_digit(*p))
- return 0;
- } while (*++p != '\0');
- return 1;
-}
diff --git a/sh/mystring.h b/sh/mystring.h
deleted file mode 100644
index 08a73e9..0000000
--- a/sh/mystring.h
+++ /dev/null
@@ -1,45 +0,0 @@
-/* $NetBSD: mystring.h,v 1.11 2003/08/07 09:05:35 agc Exp $ */
-
-/*-
- * Copyright (c) 1991, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Kenneth Almquist.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * @(#)mystring.h 8.2 (Berkeley) 5/4/95
- */
-
-#include <string.h>
-
-void scopyn(const char *, char *, int);
-int prefix(const char *, const char *);
-int number(const char *);
-int is_number(const char *);
-
-#define equal(s1, s2) (strcmp(s1, s2) == 0)
-#define scopy(s1, s2) ((void)strcpy(s2, s1))
diff --git a/sh/nodes.c b/sh/nodes.c
deleted file mode 100644
index 8a2c718..0000000
--- a/sh/nodes.c
+++ /dev/null
@@ -1,347 +0,0 @@
-/*
- * This file was generated by mknodes.sh
- */
-
-/* $NetBSD: nodes.c.pat,v 1.12 2004/06/15 22:57:27 dsl Exp $ */
-
-/*-
- * Copyright (c) 1991, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Kenneth Almquist.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * @(#)nodes.c.pat 8.2 (Berkeley) 5/4/95
- */
-
-#include <stdlib.h>
-/*
- * Routine for dealing with parsed shell commands.
- */
-
-#include "shell.h"
-#include "nodes.h"
-#include "memalloc.h"
-#include "machdep.h"
-#include "mystring.h"
-
-
-int funcblocksize; /* size of structures in function */
-int funcstringsize; /* size of strings in node */
-pointer funcblock; /* block to allocate function from */
-char *funcstring; /* block to allocate strings from */
-
-static const short nodesize[26] = {
- SHELL_ALIGN(sizeof (struct nbinary)),
- SHELL_ALIGN(sizeof (struct ncmd)),
- SHELL_ALIGN(sizeof (struct npipe)),
- SHELL_ALIGN(sizeof (struct nredir)),
- SHELL_ALIGN(sizeof (struct nredir)),
- SHELL_ALIGN(sizeof (struct nredir)),
- SHELL_ALIGN(sizeof (struct nbinary)),
- SHELL_ALIGN(sizeof (struct nbinary)),
- SHELL_ALIGN(sizeof (struct nif)),
- SHELL_ALIGN(sizeof (struct nbinary)),
- SHELL_ALIGN(sizeof (struct nbinary)),
- SHELL_ALIGN(sizeof (struct nfor)),
- SHELL_ALIGN(sizeof (struct ncase)),
- SHELL_ALIGN(sizeof (struct nclist)),
- SHELL_ALIGN(sizeof (struct narg)),
- SHELL_ALIGN(sizeof (struct narg)),
- SHELL_ALIGN(sizeof (struct nfile)),
- SHELL_ALIGN(sizeof (struct nfile)),
- SHELL_ALIGN(sizeof (struct nfile)),
- SHELL_ALIGN(sizeof (struct nfile)),
- SHELL_ALIGN(sizeof (struct nfile)),
- SHELL_ALIGN(sizeof (struct ndup)),
- SHELL_ALIGN(sizeof (struct ndup)),
- SHELL_ALIGN(sizeof (struct nhere)),
- SHELL_ALIGN(sizeof (struct nhere)),
- SHELL_ALIGN(sizeof (struct nnot)),
-};
-
-
-STATIC void calcsize(union node *);
-STATIC void sizenodelist(struct nodelist *);
-STATIC union node *copynode(union node *);
-STATIC struct nodelist *copynodelist(struct nodelist *);
-STATIC char *nodesavestr(char *);
-
-
-
-/*
- * Make a copy of a parse tree.
- */
-
-union node *
-copyfunc(n)
- union node *n;
-{
- if (n == NULL)
- return NULL;
- funcblocksize = 0;
- funcstringsize = 0;
- calcsize(n);
- funcblock = ckmalloc(funcblocksize + funcstringsize);
- funcstring = (char *) funcblock + funcblocksize;
- return copynode(n);
-}
-
-
-
-STATIC void
-calcsize(n)
- union node *n;
-{
- if (n == NULL)
- return;
- funcblocksize += nodesize[n->type];
- switch (n->type) {
- case NSEMI:
- case NAND:
- case NOR:
- case NWHILE:
- case NUNTIL:
- calcsize(n->nbinary.ch2);
- calcsize(n->nbinary.ch1);
- break;
- case NCMD:
- calcsize(n->ncmd.redirect);
- calcsize(n->ncmd.args);
- break;
- case NPIPE:
- sizenodelist(n->npipe.cmdlist);
- break;
- case NREDIR:
- case NBACKGND:
- case NSUBSHELL:
- calcsize(n->nredir.redirect);
- calcsize(n->nredir.n);
- break;
- case NIF:
- calcsize(n->nif.elsepart);
- calcsize(n->nif.ifpart);
- calcsize(n->nif.test);
- break;
- case NFOR:
- funcstringsize += strlen(n->nfor.var) + 1;
- calcsize(n->nfor.body);
- calcsize(n->nfor.args);
- break;
- case NCASE:
- calcsize(n->ncase.cases);
- calcsize(n->ncase.expr);
- break;
- case NCLIST:
- calcsize(n->nclist.body);
- calcsize(n->nclist.pattern);
- calcsize(n->nclist.next);
- break;
- case NDEFUN:
- case NARG:
- sizenodelist(n->narg.backquote);
- funcstringsize += strlen(n->narg.text) + 1;
- calcsize(n->narg.next);
- break;
- case NTO:
- case NCLOBBER:
- case NFROM:
- case NFROMTO:
- case NAPPEND:
- calcsize(n->nfile.fname);
- calcsize(n->nfile.next);
- break;
- case NTOFD:
- case NFROMFD:
- calcsize(n->ndup.vname);
- calcsize(n->ndup.next);
- break;
- case NHERE:
- case NXHERE:
- calcsize(n->nhere.doc);
- calcsize(n->nhere.next);
- break;
- case NNOT:
- calcsize(n->nnot.com);
- break;
- };
-}
-
-
-
-STATIC void
-sizenodelist(lp)
- struct nodelist *lp;
-{
- while (lp) {
- funcblocksize += SHELL_ALIGN(sizeof(struct nodelist));
- calcsize(lp->n);
- lp = lp->next;
- }
-}
-
-
-
-STATIC union node *
-copynode(n)
- union node *n;
-{
- union node *new;
-
- if (n == NULL)
- return NULL;
- new = funcblock;
- funcblock = (char *) funcblock + nodesize[n->type];
- switch (n->type) {
- case NSEMI:
- case NAND:
- case NOR:
- case NWHILE:
- case NUNTIL:
- new->nbinary.ch2 = copynode(n->nbinary.ch2);
- new->nbinary.ch1 = copynode(n->nbinary.ch1);
- break;
- case NCMD:
- new->ncmd.redirect = copynode(n->ncmd.redirect);
- new->ncmd.args = copynode(n->ncmd.args);
- new->ncmd.backgnd = n->ncmd.backgnd;
- break;
- case NPIPE:
- new->npipe.cmdlist = copynodelist(n->npipe.cmdlist);
- new->npipe.backgnd = n->npipe.backgnd;
- break;
- case NREDIR:
- case NBACKGND:
- case NSUBSHELL:
- new->nredir.redirect = copynode(n->nredir.redirect);
- new->nredir.n = copynode(n->nredir.n);
- break;
- case NIF:
- new->nif.elsepart = copynode(n->nif.elsepart);
- new->nif.ifpart = copynode(n->nif.ifpart);
- new->nif.test = copynode(n->nif.test);
- break;
- case NFOR:
- new->nfor.var = nodesavestr(n->nfor.var);
- new->nfor.body = copynode(n->nfor.body);
- new->nfor.args = copynode(n->nfor.args);
- break;
- case NCASE:
- new->ncase.cases = copynode(n->ncase.cases);
- new->ncase.expr = copynode(n->ncase.expr);
- break;
- case NCLIST:
- new->nclist.body = copynode(n->nclist.body);
- new->nclist.pattern = copynode(n->nclist.pattern);
- new->nclist.next = copynode(n->nclist.next);
- break;
- case NDEFUN:
- case NARG:
- new->narg.backquote = copynodelist(n->narg.backquote);
- new->narg.text = nodesavestr(n->narg.text);
- new->narg.next = copynode(n->narg.next);
- break;
- case NTO:
- case NCLOBBER:
- case NFROM:
- case NFROMTO:
- case NAPPEND:
- new->nfile.fname = copynode(n->nfile.fname);
- new->nfile.fd = n->nfile.fd;
- new->nfile.next = copynode(n->nfile.next);
- break;
- case NTOFD:
- case NFROMFD:
- new->ndup.vname = copynode(n->ndup.vname);
- new->ndup.dupfd = n->ndup.dupfd;
- new->ndup.fd = n->ndup.fd;
- new->ndup.next = copynode(n->ndup.next);
- break;
- case NHERE:
- case NXHERE:
- new->nhere.doc = copynode(n->nhere.doc);
- new->nhere.fd = n->nhere.fd;
- new->nhere.next = copynode(n->nhere.next);
- break;
- case NNOT:
- new->nnot.com = copynode(n->nnot.com);
- break;
- };
- new->type = n->type;
- return new;
-}
-
-
-STATIC struct nodelist *
-copynodelist(lp)
- struct nodelist *lp;
-{
- struct nodelist *start;
- struct nodelist **lpp;
-
- lpp = &start;
- while (lp) {
- *lpp = funcblock;
- funcblock = (char *) funcblock +
- SHELL_ALIGN(sizeof(struct nodelist));
- (*lpp)->n = copynode(lp->n);
- lp = lp->next;
- lpp = &(*lpp)->next;
- }
- *lpp = NULL;
- return start;
-}
-
-
-
-STATIC char *
-nodesavestr(s)
- char *s;
-{
- register char *p = s;
- register char *q = funcstring;
- char *rtn = funcstring;
-
- while ((*q++ = *p++) != 0)
- continue;
- funcstring = q;
- return rtn;
-}
-
-
-
-/*
- * Free a parse tree.
- */
-
-void
-freefunc(n)
- union node *n;
-{
- if (n)
- ckfree(n);
-}
diff --git a/sh/nodes.c.pat b/sh/nodes.c.pat
deleted file mode 100644
index e619a01..0000000
--- a/sh/nodes.c.pat
+++ /dev/null
@@ -1,166 +0,0 @@
-/* $NetBSD: nodes.c.pat,v 1.12 2004/06/15 22:57:27 dsl Exp $ */
-
-/*-
- * Copyright (c) 1991, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Kenneth Almquist.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * @(#)nodes.c.pat 8.2 (Berkeley) 5/4/95
- */
-
-#include <stdlib.h>
-/*
- * Routine for dealing with parsed shell commands.
- */
-
-#include "shell.h"
-#include "nodes.h"
-#include "memalloc.h"
-#include "machdep.h"
-#include "mystring.h"
-
-
-int funcblocksize; /* size of structures in function */
-int funcstringsize; /* size of strings in node */
-pointer funcblock; /* block to allocate function from */
-char *funcstring; /* block to allocate strings from */
-
-%SIZES
-
-
-STATIC void calcsize(union node *);
-STATIC void sizenodelist(struct nodelist *);
-STATIC union node *copynode(union node *);
-STATIC struct nodelist *copynodelist(struct nodelist *);
-STATIC char *nodesavestr(char *);
-
-
-
-/*
- * Make a copy of a parse tree.
- */
-
-union node *
-copyfunc(n)
- union node *n;
-{
- if (n == NULL)
- return NULL;
- funcblocksize = 0;
- funcstringsize = 0;
- calcsize(n);
- funcblock = ckmalloc(funcblocksize + funcstringsize);
- funcstring = (char *) funcblock + funcblocksize;
- return copynode(n);
-}
-
-
-
-STATIC void
-calcsize(n)
- union node *n;
-{
- %CALCSIZE
-}
-
-
-
-STATIC void
-sizenodelist(lp)
- struct nodelist *lp;
-{
- while (lp) {
- funcblocksize += SHELL_ALIGN(sizeof(struct nodelist));
- calcsize(lp->n);
- lp = lp->next;
- }
-}
-
-
-
-STATIC union node *
-copynode(n)
- union node *n;
-{
- union node *new;
-
- %COPY
- return new;
-}
-
-
-STATIC struct nodelist *
-copynodelist(lp)
- struct nodelist *lp;
-{
- struct nodelist *start;
- struct nodelist **lpp;
-
- lpp = &start;
- while (lp) {
- *lpp = funcblock;
- funcblock = (char *) funcblock +
- SHELL_ALIGN(sizeof(struct nodelist));
- (*lpp)->n = copynode(lp->n);
- lp = lp->next;
- lpp = &(*lpp)->next;
- }
- *lpp = NULL;
- return start;
-}
-
-
-
-STATIC char *
-nodesavestr(s)
- char *s;
-{
- register char *p = s;
- register char *q = funcstring;
- char *rtn = funcstring;
-
- while ((*q++ = *p++) != 0)
- continue;
- funcstring = q;
- return rtn;
-}
-
-
-
-/*
- * Free a parse tree.
- */
-
-void
-freefunc(n)
- union node *n;
-{
- if (n)
- ckfree(n);
-}
diff --git a/sh/nodes.h b/sh/nodes.h
deleted file mode 100644
index aa750ed..0000000
--- a/sh/nodes.h
+++ /dev/null
@@ -1,159 +0,0 @@
-/*
- * This file was generated by mknodes.sh
- */
-
-#define NSEMI 0
-#define NCMD 1
-#define NPIPE 2
-#define NREDIR 3
-#define NBACKGND 4
-#define NSUBSHELL 5
-#define NAND 6
-#define NOR 7
-#define NIF 8
-#define NWHILE 9
-#define NUNTIL 10
-#define NFOR 11
-#define NCASE 12
-#define NCLIST 13
-#define NDEFUN 14
-#define NARG 15
-#define NTO 16
-#define NCLOBBER 17
-#define NFROM 18
-#define NFROMTO 19
-#define NAPPEND 20
-#define NTOFD 21
-#define NFROMFD 22
-#define NHERE 23
-#define NXHERE 24
-#define NNOT 25
-
-
-
-struct nbinary {
- int type;
- union node *ch1;
- union node *ch2;
-};
-
-
-struct ncmd {
- int type;
- int backgnd;
- union node *args;
- union node *redirect;
-};
-
-
-struct npipe {
- int type;
- int backgnd;
- struct nodelist *cmdlist;
-};
-
-
-struct nredir {
- int type;
- union node *n;
- union node *redirect;
-};
-
-
-struct nif {
- int type;
- union node *test;
- union node *ifpart;
- union node *elsepart;
-};
-
-
-struct nfor {
- int type;
- union node *args;
- union node *body;
- char *var;
-};
-
-
-struct ncase {
- int type;
- union node *expr;
- union node *cases;
-};
-
-
-struct nclist {
- int type;
- union node *next;
- union node *pattern;
- union node *body;
-};
-
-
-struct narg {
- int type;
- union node *next;
- char *text;
- struct nodelist *backquote;
-};
-
-
-struct nfile {
- int type;
- union node *next;
- int fd;
- union node *fname;
- char *expfname;
-};
-
-
-struct ndup {
- int type;
- union node *next;
- int fd;
- int dupfd;
- union node *vname;
-};
-
-
-struct nhere {
- int type;
- union node *next;
- int fd;
- union node *doc;
-};
-
-
-struct nnot {
- int type;
- union node *com;
-};
-
-
-union node {
- int type;
- struct nbinary nbinary;
- struct ncmd ncmd;
- struct npipe npipe;
- struct nredir nredir;
- struct nif nif;
- struct nfor nfor;
- struct ncase ncase;
- struct nclist nclist;
- struct narg narg;
- struct nfile nfile;
- struct ndup ndup;
- struct nhere nhere;
- struct nnot nnot;
-};
-
-
-struct nodelist {
- struct nodelist *next;
- union node *n;
-};
-
-
-union node *copyfunc(union node *);
-void freefunc(union node *);
diff --git a/sh/nodetypes b/sh/nodetypes
deleted file mode 100644
index 4adebc0..0000000
--- a/sh/nodetypes
+++ /dev/null
@@ -1,143 +0,0 @@
-# $NetBSD: nodetypes,v 1.12 2003/08/22 11:22:23 agc Exp $
-# Copyright (c) 1991, 1993
-# The Regents of the University of California. All rights reserved.
-#
-# This code is derived from software contributed to Berkeley by
-# Kenneth Almquist.
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions
-# are met:
-# 1. Redistributions of source code must retain the above copyright
-# notice, this list of conditions and the following disclaimer.
-# 2. Redistributions in binary form must reproduce the above copyright
-# notice, this list of conditions and the following disclaimer in the
-# documentation and/or other materials provided with the distribution.
-# 3. Neither the name of the University nor the names of its contributors
-# may be used to endorse or promote products derived from this software
-# without specific prior written permission.
-#
-# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
-# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
-# ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
-# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
-# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
-# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
-# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
-# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
-# SUCH DAMAGE.
-#
-# @(#)nodetypes 8.2 (Berkeley) 5/4/95
-
-# This file describes the nodes used in parse trees. Unindented lines
-# contain a node type followed by a structure tag. Subsequent indented
-# lines specify the fields of the structure. Several node types can share
-# the same structure, in which case the fields of the structure should be
-# specified only once.
-#
-# A field of a structure is described by the name of the field followed
-# by a type. The currently implemented types are:
-# nodeptr - a pointer to a node
-# nodelist - a pointer to a list of nodes
-# string - a pointer to a nul terminated string
-# int - an integer
-# other - any type that can be copied by assignment
-# temp - a field that doesn't have to be copied when the node is copied
-# The last two types should be followed by the text of a C declaration for
-# the field.
-
-NSEMI nbinary # two commands separated by a semicolon
- type int
- ch1 nodeptr # the first child
- ch2 nodeptr # the second child
-
-NCMD ncmd # a simple command
- type int
- backgnd int # set to run command in background
- args nodeptr # the arguments
- redirect nodeptr # list of file redirections
-
-NPIPE npipe # a pipeline
- type int
- backgnd int # set to run pipeline in background
- cmdlist nodelist # the commands in the pipeline
-
-NREDIR nredir # redirection (of a complex command)
- type int
- n nodeptr # the command
- redirect nodeptr # list of file redirections
-
-NBACKGND nredir # run command in background
-NSUBSHELL nredir # run command in a subshell
-
-NAND nbinary # the && operator
-NOR nbinary # the || operator
-
-NIF nif # the if statement. Elif clauses are handled
- type int # using multiple if nodes.
- test nodeptr # if test
- ifpart nodeptr # then ifpart
- elsepart nodeptr # else elsepart
-
-NWHILE nbinary # the while statement. First child is the test
-NUNTIL nbinary # the until statement
-
-NFOR nfor # the for statement
- type int
- args nodeptr # for var in args
- body nodeptr # do body; done
- var string # the for variable
-
-NCASE ncase # a case statement
- type int
- expr nodeptr # the word to switch on
- cases nodeptr # the list of cases (NCLIST nodes)
-
-NCLIST nclist # a case
- type int
- next nodeptr # the next case in list
- pattern nodeptr # list of patterns for this case
- body nodeptr # code to execute for this case
-
-
-NDEFUN narg # define a function. The "next" field contains
- # the body of the function.
-
-NARG narg # represents a word
- type int
- next nodeptr # next word in list
- text string # the text of the word
- backquote nodelist # list of commands in back quotes
-
-NTO nfile # fd> fname
-NCLOBBER nfile # fd>| fname
-NFROM nfile # fd< fname
-NFROMTO nfile # fd<> fname
-NAPPEND nfile # fd>> fname
- type int
- next nodeptr # next redirection in list
- fd int # file descriptor being redirected
- fname nodeptr # file name, in a NARG node
- expfname temp char *expfname # actual file name
-
-NTOFD ndup # fd<&dupfd
-NFROMFD ndup # fd>&dupfd
- type int
- next nodeptr # next redirection in list
- fd int # file descriptor being redirected
- dupfd int # file descriptor to duplicate
- vname nodeptr # file name if fd>&$var
-
-
-NHERE nhere # fd<<\!
-NXHERE nhere # fd<<!
- type int
- next nodeptr # next redirection in list
- fd int # file descriptor being redirected
- doc nodeptr # input to command (NARG node)
-
-NNOT nnot # ! command (actually pipeline)
- type int
- com nodeptr
diff --git a/sh/options.c b/sh/options.c
deleted file mode 100644
index bc833c7..0000000
--- a/sh/options.c
+++ /dev/null
@@ -1,530 +0,0 @@
-/* $NetBSD: options.c,v 1.37 2004/10/30 19:29:27 christos Exp $ */
-
-/*-
- * Copyright (c) 1991, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Kenneth Almquist.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <sys/cdefs.h>
-#ifndef lint
-#if 0
-static char sccsid[] = "@(#)options.c 8.2 (Berkeley) 5/4/95";
-#else
-__RCSID("$NetBSD: options.c,v 1.37 2004/10/30 19:29:27 christos Exp $");
-#endif
-#endif /* not lint */
-
-#include <signal.h>
-#include <unistd.h>
-#include <stdlib.h>
-
-#include "shell.h"
-#define DEFINE_OPTIONS
-#include "options.h"
-#undef DEFINE_OPTIONS
-#include "nodes.h" /* for other header files */
-#include "eval.h"
-#include "jobs.h"
-#include "input.h"
-#include "output.h"
-#include "trap.h"
-#include "var.h"
-#include "memalloc.h"
-#include "error.h"
-#include "mystring.h"
-#ifndef SMALL
-#include "myhistedit.h"
-#endif
-#include "show.h"
-
-char *arg0; /* value of $0 */
-struct shparam shellparam; /* current positional parameters */
-char **argptr; /* argument list for builtin commands */
-char *optionarg; /* set by nextopt (like getopt) */
-char *optptr; /* used by nextopt */
-
-char *minusc; /* argument to -c option */
-
-
-STATIC void options(int);
-STATIC void minus_o(char *, int);
-STATIC void setoption(int, int);
-STATIC int getopts(char *, char *, char **, char ***, char **);
-
-
-/*
- * Process the shell command line arguments.
- */
-
-void
-procargs(int argc, char **argv)
-{
- int i;
-
- argptr = argv;
- if (argc > 0)
- argptr++;
- for (i = 0; i < NOPTS; i++)
- optlist[i].val = 2;
- options(1);
- if (*argptr == NULL && minusc == NULL)
- sflag = 1;
- if (iflag == 2 && sflag == 1 && isatty(0) && isatty(1))
- iflag = 1;
- if (mflag == 2)
- mflag = iflag;
- for (i = 0; i < NOPTS; i++)
- if (optlist[i].val == 2)
- optlist[i].val = 0;
-#if DEBUG == 2
- debug = 1;
-#endif
- arg0 = argv[0];
- if (sflag == 0 && minusc == NULL) {
- commandname = argv[0];
- arg0 = *argptr++;
- setinputfile(arg0, 0);
- commandname = arg0;
- }
- /* POSIX 1003.2: first arg after -c cmd is $0, remainder $1... */
- if (minusc != NULL) {
- if (argptr == NULL || *argptr == NULL)
- error("Bad -c option");
- minusc = *argptr++;
- if (*argptr != 0)
- arg0 = *argptr++;
- }
-
- shellparam.p = argptr;
- shellparam.reset = 1;
- /* assert(shellparam.malloc == 0 && shellparam.nparam == 0); */
- while (*argptr) {
- shellparam.nparam++;
- argptr++;
- }
- optschanged();
-}
-
-
-void
-optschanged(void)
-{
- setinteractive(iflag);
-#ifdef WITH_HISTORY
- histedit();
-#endif
- setjobctl(mflag);
-}
-
-/*
- * Process shell options. The global variable argptr contains a pointer
- * to the argument list; we advance it past the options.
- */
-
-STATIC void
-options(int cmdline)
-{
- static char empty[] = "";
- char *p;
- int val;
- int c;
-
- if (cmdline)
- minusc = NULL;
- while ((p = *argptr) != NULL) {
- argptr++;
- if ((c = *p++) == '-') {
- val = 1;
- if (p[0] == '\0' || (p[0] == '-' && p[1] == '\0')) {
- if (!cmdline) {
- /* "-" means turn off -x and -v */
- if (p[0] == '\0')
- xflag = vflag = 0;
- /* "--" means reset params */
- else if (*argptr == NULL)
- setparam(argptr);
- }
- break; /* "-" or "--" terminates options */
- }
- } else if (c == '+') {
- val = 0;
- } else {
- argptr--;
- break;
- }
- while ((c = *p++) != '\0') {
- if (c == 'c' && cmdline) {
- /* command is after shell args*/
- minusc = empty;
- } else if (c == 'o') {
- minus_o(*argptr, val);
- if (*argptr)
- argptr++;
- } else {
- setoption(c, val);
- }
- }
- }
-}
-
-static void
-set_opt_val(int i, int val)
-{
- int j;
- int flag;
-
- if (val && (flag = optlist[i].opt_set)) {
- /* some options (eg vi/emacs) are mutually exclusive */
- for (j = 0; j < NOPTS; j++)
- if (optlist[j].opt_set == flag)
- optlist[j].val = 0;
- }
- optlist[i].val = val;
-#ifdef DEBUG
- if (&optlist[i].val == &debug)
- opentrace();
-#endif
-}
-
-STATIC void
-minus_o(char *name, int val)
-{
- int i;
-
- if (name == NULL) {
- out1str("Current option settings\n");
- for (i = 0; i < NOPTS; i++)
- out1fmt("%-16s%s\n", optlist[i].name,
- optlist[i].val ? "on" : "off");
- } else {
- for (i = 0; i < NOPTS; i++)
- if (equal(name, optlist[i].name)) {
- set_opt_val(i, val);
- return;
- }
- error("Illegal option -o %s", name);
- }
-}
-
-
-STATIC void
-setoption(int flag, int val)
-{
- int i;
-
- for (i = 0; i < NOPTS; i++)
- if (optlist[i].letter == flag) {
- set_opt_val( i, val );
- return;
- }
- error("Illegal option -%c", flag);
- /* NOTREACHED */
-}
-
-
-
-#ifdef mkinit
-INCLUDE "options.h"
-
-SHELLPROC {
- int i;
-
- for (i = 0; optlist[i].name; i++)
- optlist[i].val = 0;
- optschanged();
-
-}
-#endif
-
-
-/*
- * Set the shell parameters.
- */
-
-void
-setparam(char **argv)
-{
- char **newparam;
- char **ap;
- int nparam;
-
- for (nparam = 0 ; argv[nparam] ; nparam++);
- ap = newparam = ckmalloc((nparam + 1) * sizeof *ap);
- while (*argv) {
- *ap++ = savestr(*argv++);
- }
- *ap = NULL;
- freeparam(&shellparam);
- shellparam.malloc = 1;
- shellparam.nparam = nparam;
- shellparam.p = newparam;
- shellparam.optnext = NULL;
-}
-
-
-/*
- * Free the list of positional parameters.
- */
-
-void
-freeparam(volatile struct shparam *param)
-{
- char **ap;
-
- if (param->malloc) {
- for (ap = param->p ; *ap ; ap++)
- ckfree(*ap);
- ckfree(param->p);
- }
-}
-
-
-
-/*
- * The shift builtin command.
- */
-
-int
-shiftcmd(int argc, char **argv)
-{
- int n;
- char **ap1, **ap2;
-
- n = 1;
- if (argc > 1)
- n = number(argv[1]);
- if (n > shellparam.nparam)
- error("can't shift that many");
- INTOFF;
- shellparam.nparam -= n;
- for (ap1 = shellparam.p ; --n >= 0 ; ap1++) {
- if (shellparam.malloc)
- ckfree(*ap1);
- }
- ap2 = shellparam.p;
- while ((*ap2++ = *ap1++) != NULL);
- shellparam.optnext = NULL;
- INTON;
- return 0;
-}
-
-
-
-/*
- * The set command builtin.
- */
-
-int
-setcmd(int argc, char **argv)
-{
- if (argc == 1)
- return showvars(0, 0, 1);
- INTOFF;
- options(0);
- optschanged();
- if (*argptr != NULL) {
- setparam(argptr);
- }
- INTON;
- return 0;
-}
-
-
-void
-getoptsreset(value)
- const char *value;
-{
- if (number(value) == 1) {
- shellparam.optnext = NULL;
- shellparam.reset = 1;
- }
-}
-
-/*
- * The getopts builtin. Shellparam.optnext points to the next argument
- * to be processed. Shellparam.optptr points to the next character to
- * be processed in the current argument. If shellparam.optnext is NULL,
- * then it's the first time getopts has been called.
- */
-
-int
-getoptscmd(int argc, char **argv)
-{
- char **optbase;
-
- if (argc < 3)
- error("usage: getopts optstring var [arg]");
- else if (argc == 3)
- optbase = shellparam.p;
- else
- optbase = &argv[3];
-
- if (shellparam.reset == 1) {
- shellparam.optnext = optbase;
- shellparam.optptr = NULL;
- shellparam.reset = 0;
- }
-
- return getopts(argv[1], argv[2], optbase, &shellparam.optnext,
- &shellparam.optptr);
-}
-
-STATIC int
-getopts(char *optstr, char *optvar, char **optfirst, char ***optnext, char **optpptr)
-{
- char *p, *q;
- char c = '?';
- int done = 0;
- int ind = 0;
- int err = 0;
- char s[12];
-
- if ((p = *optpptr) == NULL || *p == '\0') {
- /* Current word is done, advance */
- if (*optnext == NULL)
- return 1;
- p = **optnext;
- if (p == NULL || *p != '-' || *++p == '\0') {
-atend:
- ind = *optnext - optfirst + 1;
- *optnext = NULL;
- p = NULL;
- done = 1;
- goto out;
- }
- (*optnext)++;
- if (p[0] == '-' && p[1] == '\0') /* check for "--" */
- goto atend;
- }
-
- c = *p++;
- for (q = optstr; *q != c; ) {
- if (*q == '\0') {
- if (optstr[0] == ':') {
- s[0] = c;
- s[1] = '\0';
- err |= setvarsafe("OPTARG", s, 0);
- } else {
- outfmt(&errout, "Illegal option -%c\n", c);
- (void) unsetvar("OPTARG", 0);
- }
- c = '?';
- goto bad;
- }
- if (*++q == ':')
- q++;
- }
-
- if (*++q == ':') {
- if (*p == '\0' && (p = **optnext) == NULL) {
- if (optstr[0] == ':') {
- s[0] = c;
- s[1] = '\0';
- err |= setvarsafe("OPTARG", s, 0);
- c = ':';
- } else {
- outfmt(&errout, "No arg for -%c option\n", c);
- (void) unsetvar("OPTARG", 0);
- c = '?';
- }
- goto bad;
- }
-
- if (p == **optnext)
- (*optnext)++;
- err |= setvarsafe("OPTARG", p, 0);
- p = NULL;
- } else
- err |= setvarsafe("OPTARG", "", 0);
- ind = *optnext - optfirst + 1;
- goto out;
-
-bad:
- ind = 1;
- *optnext = NULL;
- p = NULL;
-out:
- *optpptr = p;
- fmtstr(s, sizeof(s), "%d", ind);
- err |= setvarsafe("OPTIND", s, VNOFUNC);
- s[0] = c;
- s[1] = '\0';
- err |= setvarsafe(optvar, s, 0);
- if (err) {
- *optnext = NULL;
- *optpptr = NULL;
- flushall();
- exraise(EXERROR);
- }
- return done;
-}
-
-/*
- * XXX - should get rid of. have all builtins use getopt(3). the
- * library getopt must have the BSD extension static variable "optreset"
- * otherwise it can't be used within the shell safely.
- *
- * Standard option processing (a la getopt) for builtin routines. The
- * only argument that is passed to nextopt is the option string; the
- * other arguments are unnecessary. It return the character, or '\0' on
- * end of input.
- */
-
-int
-nextopt(const char *optstring)
-{
- char *p;
- const char *q;
- char c;
-
- if ((p = optptr) == NULL || *p == '\0') {
- p = *argptr;
- if (p == NULL || *p != '-' || *++p == '\0')
- return '\0';
- argptr++;
- if (p[0] == '-' && p[1] == '\0') /* check for "--" */
- return '\0';
- }
- c = *p++;
- for (q = optstring ; *q != c ; ) {
- if (*q == '\0')
- error("Illegal option -%c", c);
- if (*++q == ':')
- q++;
- }
- if (*++q == ':') {
- if (*p == '\0' && (p = *argptr++) == NULL)
- error("No arg for -%c option", c);
- optionarg = p;
- p = NULL;
- }
- optptr = p;
- return c;
-}
diff --git a/sh/options.h b/sh/options.h
deleted file mode 100644
index 4cc7dbe..0000000
--- a/sh/options.h
+++ /dev/null
@@ -1,131 +0,0 @@
-/* $NetBSD: options.h,v 1.17 2003/08/07 09:05:36 agc Exp $ */
-
-/*-
- * Copyright (c) 1991, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Kenneth Almquist.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * @(#)options.h 8.2 (Berkeley) 5/4/95
- */
-
-struct shparam {
- int nparam; /* # of positional parameters (without $0) */
- unsigned char malloc; /* if parameter list dynamically allocated */
- unsigned char reset; /* if getopts has been reset */
- char **p; /* parameter list */
- char **optnext; /* next parameter to be processed by getopts */
- char *optptr; /* used by getopts */
-};
-
-
-struct optent {
- const char *name; /* for set -o <name> */
- const char letter; /* set [+/-]<letter> and $- */
- const char opt_set; /* mutually exclusive option set */
- char val; /* value of <letter>flag */
-};
-
-/* Those marked [U] are required by posix, but have no effect! */
-
-#ifdef DEFINE_OPTIONS
-#define DEF_OPTS(name, letter, opt_set) {name, letter, opt_set, 0},
-struct optent optlist[] = {
-#else
-#define DEF_OPTS(name, letter, opt_set)
-#endif
-#define DEF_OPT(name,letter) DEF_OPTS(name, letter, 0)
-
-DEF_OPT( "errexit", 'e' ) /* exit on error */
-#define eflag optlist[0].val
-DEF_OPT( "noglob", 'f' ) /* no pathname expansion */
-#define fflag optlist[1].val
-DEF_OPT( "ignoreeof", 'I' ) /* do not exit on EOF */
-#define Iflag optlist[2].val
-DEF_OPT( "interactive",'i' ) /* interactive shell */
-#define iflag optlist[3].val
-DEF_OPT( "monitor", 'm' ) /* job control */
-#define mflag optlist[4].val
-DEF_OPT( "noexec", 'n' ) /* [U] do not exec commands */
-#define nflag optlist[5].val
-DEF_OPT( "stdin", 's' ) /* read from stdin */
-#define sflag optlist[6].val
-DEF_OPT( "xtrace", 'x' ) /* trace after expansion */
-#define xflag optlist[7].val
-DEF_OPT( "verbose", 'v' ) /* trace read input */
-#define vflag optlist[8].val
-DEF_OPTS( "vi", 'V', 'V' ) /* vi style editing */
-#define Vflag optlist[9].val
-DEF_OPTS( "emacs", 'E', 'V' ) /* emacs style editing */
-#define Eflag optlist[10].val
-DEF_OPT( "noclobber", 'C' ) /* do not overwrite files with > */
-#define Cflag optlist[11].val
-DEF_OPT( "allexport", 'a' ) /* export all variables */
-#define aflag optlist[12].val
-DEF_OPT( "notify", 'b' ) /* [U] report completion of background jobs */
-#define bflag optlist[13].val
-DEF_OPT( "nounset", 'u' ) /* error expansion of unset variables */
-#define uflag optlist[14].val
-DEF_OPT( "quietprofile", 'q' )
-#define qflag optlist[15].val
-DEF_OPT( "nolog", 0 ) /* [U] no functon defs in command history */
-#define nolog optlist[16].val
-DEF_OPT( "cdprint", 0 ) /* always print result of cd */
-#define cdprint optlist[17].val
-#ifdef DEBUG
-DEF_OPT( "debug", 0 ) /* enable debug prints */
-#define debug optlist[18].val
-#endif
-
-#ifdef DEFINE_OPTIONS
- { 0, 0, 0, 0 },
-};
-#define NOPTS (sizeof optlist / sizeof optlist[0] - 1)
-int sizeof_optlist = sizeof optlist;
-#else
-extern struct optent optlist[];
-extern int sizeof_optlist;
-#endif
-
-
-extern char *minusc; /* argument to -c option */
-extern char *arg0; /* $0 */
-extern struct shparam shellparam; /* $@ */
-extern char **argptr; /* argument list for builtin commands */
-extern char *optionarg; /* set by nextopt */
-extern char *optptr; /* used by nextopt */
-
-void procargs(int, char **);
-void optschanged(void);
-void setparam(char **);
-void freeparam(volatile struct shparam *);
-int shiftcmd(int, char **);
-int setcmd(int, char **);
-int getoptscmd(int, char **);
-int nextopt(const char *);
-void getoptsreset(const char *);
diff --git a/sh/output.c b/sh/output.c
deleted file mode 100644
index b0e669e..0000000
--- a/sh/output.c
+++ /dev/null
@@ -1,516 +0,0 @@
-/* $NetBSD: output.c,v 1.28 2003/08/07 09:05:36 agc Exp $ */
-
-/*-
- * Copyright (c) 1991, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Kenneth Almquist.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <sys/cdefs.h>
-#ifndef lint
-#if 0
-static char sccsid[] = "@(#)output.c 8.2 (Berkeley) 5/4/95";
-#else
-__RCSID("$NetBSD: output.c,v 1.28 2003/08/07 09:05:36 agc Exp $");
-#endif
-#endif /* not lint */
-
-/*
- * Shell output routines. We use our own output routines because:
- * When a builtin command is interrupted we have to discard
- * any pending output.
- * When a builtin command appears in back quotes, we want to
- * save the output of the command in a region obtained
- * via malloc, rather than doing a fork and reading the
- * output of the command via a pipe.
- * Our output routines may be smaller than the stdio routines.
- */
-
-#include <sys/types.h> /* quad_t */
-#include <sys/param.h> /* BSD4_4 */
-#include <sys/ioctl.h>
-
-#include <stdio.h> /* defines BUFSIZ */
-#include <string.h>
-#include <errno.h>
-#include <unistd.h>
-#include <stdlib.h>
-
-#include "shell.h"
-#include "syntax.h"
-#include "output.h"
-#include "memalloc.h"
-#include "error.h"
-
-
-#define OUTBUFSIZ BUFSIZ
-#define BLOCK_OUT -2 /* output to a fixed block of memory */
-#define MEM_OUT -3 /* output to dynamically allocated memory */
-#define OUTPUT_ERR 01 /* error occurred on output */
-
-
-struct output output = {NULL, 0, NULL, OUTBUFSIZ, 1, 0};
-struct output errout = {NULL, 0, NULL, 100, 2, 0};
-struct output memout = {NULL, 0, NULL, 0, MEM_OUT, 0};
-struct output *out1 = &output;
-struct output *out2 = &errout;
-
-
-
-#ifdef mkinit
-
-INCLUDE "output.h"
-INCLUDE "memalloc.h"
-
-RESET {
- out1 = &output;
- out2 = &errout;
- if (memout.buf != NULL) {
- ckfree(memout.buf);
- memout.buf = NULL;
- }
-}
-
-#endif
-
-
-#ifdef notdef /* no longer used */
-/*
- * Set up an output file to write to memory rather than a file.
- */
-
-void
-open_mem(char *block, int length, struct output *file)
-{
- file->nextc = block;
- file->nleft = --length;
- file->fd = BLOCK_OUT;
- file->flags = 0;
-}
-#endif
-
-
-void
-out1str(const char *p)
-{
- outstr(p, out1);
-}
-
-
-void
-out2str(const char *p)
-{
- outstr(p, out2);
-}
-
-
-void
-outstr(const char *p, struct output *file)
-{
- while (*p)
- outc(*p++, file);
- if (file == out2)
- flushout(file);
-}
-
-
-char out_junk[16];
-
-
-void
-emptyoutbuf(struct output *dest)
-{
- int offset;
-
- if (dest->fd == BLOCK_OUT) {
- dest->nextc = out_junk;
- dest->nleft = sizeof out_junk;
- dest->flags |= OUTPUT_ERR;
- } else if (dest->buf == NULL) {
- INTOFF;
- dest->buf = ckmalloc(dest->bufsize);
- dest->nextc = dest->buf;
- dest->nleft = dest->bufsize;
- INTON;
- } else if (dest->fd == MEM_OUT) {
- offset = dest->bufsize;
- INTOFF;
- dest->bufsize <<= 1;
- dest->buf = ckrealloc(dest->buf, dest->bufsize);
- dest->nleft = dest->bufsize - offset;
- dest->nextc = dest->buf + offset;
- INTON;
- } else {
- flushout(dest);
- }
- dest->nleft--;
-}
-
-
-void
-flushall(void)
-{
- flushout(&output);
- flushout(&errout);
-}
-
-
-void
-flushout(struct output *dest)
-{
-
- if (dest->buf == NULL || dest->nextc == dest->buf || dest->fd < 0)
- return;
- if (xwrite(dest->fd, dest->buf, dest->nextc - dest->buf) < 0)
- dest->flags |= OUTPUT_ERR;
- dest->nextc = dest->buf;
- dest->nleft = dest->bufsize;
-}
-
-
-void
-freestdout(void)
-{
- INTOFF;
- if (output.buf) {
- ckfree(output.buf);
- output.buf = NULL;
- output.nleft = 0;
- }
- INTON;
-}
-
-
-void
-outfmt(struct output *file, const char *fmt, ...)
-{
- va_list ap;
-
- va_start(ap, fmt);
- doformat(file, fmt, ap);
- va_end(ap);
-}
-
-
-void
-out1fmt(const char *fmt, ...)
-{
- va_list ap;
-
- va_start(ap, fmt);
- doformat(out1, fmt, ap);
- va_end(ap);
-}
-
-void
-dprintf(const char *fmt, ...)
-{
- va_list ap;
-
- va_start(ap, fmt);
- doformat(out2, fmt, ap);
- va_end(ap);
- flushout(out2);
-}
-
-void
-fmtstr(char *outbuf, size_t length, const char *fmt, ...)
-{
- va_list ap;
- struct output strout;
-
- va_start(ap, fmt);
- strout.nextc = outbuf;
- strout.nleft = length;
- strout.fd = BLOCK_OUT;
- strout.flags = 0;
- doformat(&strout, fmt, ap);
- outc('\0', &strout);
- if (strout.flags & OUTPUT_ERR)
- outbuf[length - 1] = '\0';
- va_end(ap);
-}
-
-/*
- * Formatted output. This routine handles a subset of the printf formats:
- * - Formats supported: d, u, o, p, X, s, and c.
- * - The x format is also accepted but is treated like X.
- * - The l, ll and q modifiers are accepted.
- * - The - and # flags are accepted; # only works with the o format.
- * - Width and precision may be specified with any format except c.
- * - An * may be given for the width or precision.
- * - The obsolete practice of preceding the width with a zero to get
- * zero padding is not supported; use the precision field.
- * - A % may be printed by writing %% in the format string.
- */
-
-#define TEMPSIZE 24
-
-#ifdef BSD4_4
-#define HAVE_VASPRINTF 1
-#endif
-
-void
-doformat(struct output *dest, const char *f, va_list ap)
-{
-#if HAVE_VASPRINTF
- char *s;
-
- vasprintf(&s, f, ap);
- outstr(s, dest);
- free(s);
-#else /* !HAVE_VASPRINTF */
- static const char digit[] = "0123456789ABCDEF";
- char c;
- char temp[TEMPSIZE];
- int flushleft;
- int sharp;
- int width;
- int prec;
- int islong;
- int isquad;
- char *p;
- int sign;
-#ifdef BSD4_4
- quad_t l;
- u_quad_t num;
-#else
- long l;
- u_long num;
-#endif
- unsigned base;
- int len;
- int size;
- int pad;
-
- while ((c = *f++) != '\0') {
- if (c != '%') {
- outc(c, dest);
- continue;
- }
- flushleft = 0;
- sharp = 0;
- width = 0;
- prec = -1;
- islong = 0;
- isquad = 0;
- for (;;) {
- if (*f == '-')
- flushleft++;
- else if (*f == '#')
- sharp++;
- else
- break;
- f++;
- }
- if (*f == '*') {
- width = va_arg(ap, int);
- f++;
- } else {
- while (is_digit(*f)) {
- width = 10 * width + digit_val(*f++);
- }
- }
- if (*f == '.') {
- if (*++f == '*') {
- prec = va_arg(ap, int);
- f++;
- } else {
- prec = 0;
- while (is_digit(*f)) {
- prec = 10 * prec + digit_val(*f++);
- }
- }
- }
- if (*f == 'l') {
- f++;
- if (*f == 'l') {
- isquad++;
- f++;
- } else
- islong++;
- } else if (*f == 'q') {
- isquad++;
- f++;
- }
- switch (*f) {
- case 'd':
-#ifdef BSD4_4
- if (isquad)
- l = va_arg(ap, quad_t);
- else
-#endif
- if (islong)
- l = va_arg(ap, long);
- else
- l = va_arg(ap, int);
- sign = 0;
- num = l;
- if (l < 0) {
- num = -l;
- sign = 1;
- }
- base = 10;
- goto number;
- case 'u':
- base = 10;
- goto uns_number;
- case 'o':
- base = 8;
- goto uns_number;
- case 'p':
- outc('0', dest);
- outc('x', dest);
- /*FALLTHROUGH*/
- case 'x':
- /* we don't implement 'x'; treat like 'X' */
- case 'X':
- base = 16;
-uns_number: /* an unsigned number */
- sign = 0;
-#ifdef BSD4_4
- if (isquad)
- num = va_arg(ap, u_quad_t);
- else
-#endif
- if (islong)
- num = va_arg(ap, unsigned long);
- else
- num = va_arg(ap, unsigned int);
-number: /* process a number */
- p = temp + TEMPSIZE - 1;
- *p = '\0';
- while (num) {
- *--p = digit[num % base];
- num /= base;
- }
- len = (temp + TEMPSIZE - 1) - p;
- if (prec < 0)
- prec = 1;
- if (sharp && *f == 'o' && prec <= len)
- prec = len + 1;
- pad = 0;
- if (width) {
- size = len;
- if (size < prec)
- size = prec;
- size += sign;
- pad = width - size;
- if (flushleft == 0) {
- while (--pad >= 0)
- outc(' ', dest);
- }
- }
- if (sign)
- outc('-', dest);
- prec -= len;
- while (--prec >= 0)
- outc('0', dest);
- while (*p)
- outc(*p++, dest);
- while (--pad >= 0)
- outc(' ', dest);
- break;
- case 's':
- p = va_arg(ap, char *);
- pad = 0;
- if (width) {
- len = strlen(p);
- if (prec >= 0 && len > prec)
- len = prec;
- pad = width - len;
- if (flushleft == 0) {
- while (--pad >= 0)
- outc(' ', dest);
- }
- }
- prec++;
- while (--prec != 0 && *p)
- outc(*p++, dest);
- while (--pad >= 0)
- outc(' ', dest);
- break;
- case 'c':
- c = va_arg(ap, int);
- outc(c, dest);
- break;
- default:
- outc(*f, dest);
- break;
- }
- f++;
- }
-#endif /* !HAVE_VASPRINTF */
-}
-
-
-
-/*
- * Version of write which resumes after a signal is caught.
- */
-
-int
-xwrite(int fd, char *buf, int nbytes)
-{
- int ntry;
- int i;
- int n;
-
- n = nbytes;
- ntry = 0;
- for (;;) {
- i = write(fd, buf, n);
- if (i > 0) {
- if ((n -= i) <= 0)
- return nbytes;
- buf += i;
- ntry = 0;
- } else if (i == 0) {
- if (++ntry > 10)
- return nbytes - n;
- } else if (errno != EINTR) {
- return -1;
- }
- }
-}
-
-
-/*
- * Version of ioctl that retries after a signal is caught.
- * XXX unused function
- */
-
-int
-xioctl(int fd, unsigned long request, char *arg)
-{
- int i;
-
- while ((i = ioctl(fd, request, arg)) == -1 && errno == EINTR);
- return i;
-}
diff --git a/sh/output.h b/sh/output.h
deleted file mode 100644
index 9a199a0..0000000
--- a/sh/output.h
+++ /dev/null
@@ -1,81 +0,0 @@
-/* $NetBSD: output.h,v 1.17 2003/08/07 09:05:36 agc Exp $ */
-
-/*-
- * Copyright (c) 1991, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Kenneth Almquist.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * @(#)output.h 8.2 (Berkeley) 5/4/95
- */
-
-#ifndef OUTPUT_INCL
-
-#include <stdarg.h>
-
-struct output {
- char *nextc;
- int nleft;
- char *buf;
- int bufsize;
- short fd;
- short flags;
-};
-
-extern struct output output;
-extern struct output errout;
-extern struct output memout;
-extern struct output *out1;
-extern struct output *out2;
-
-void open_mem(char *, int, struct output *);
-void out1str(const char *);
-void out2str(const char *);
-void outstr(const char *, struct output *);
-void emptyoutbuf(struct output *);
-void flushall(void);
-void flushout(struct output *);
-void freestdout(void);
-void outfmt(struct output *, const char *, ...)
- __attribute__((__format__(__printf__,2,3)));
-void out1fmt(const char *, ...)
- __attribute__((__format__(__printf__,1,2)));
-void dprintf(const char *, ...)
- __attribute__((__format__(__printf__,1,2)));
-void fmtstr(char *, size_t, const char *, ...)
- __attribute__((__format__(__printf__,3,4)));
-void doformat(struct output *, const char *, va_list);
-int xwrite(int, char *, int);
-int xioctl(int, unsigned long, char *);
-
-#define outc(c, file) (--(file)->nleft < 0? (emptyoutbuf(file), *(file)->nextc++ = (c)) : (*(file)->nextc++ = (c)))
-#define out1c(c) outc(c, out1);
-#define out2c(c) outc(c, out2);
-
-#define OUTPUT_INCL
-#endif
diff --git a/sh/parser.c b/sh/parser.c
deleted file mode 100644
index faf0268..0000000
--- a/sh/parser.c
+++ /dev/null
@@ -1,1654 +0,0 @@
-/* $NetBSD: parser.c,v 1.57 2004/06/27 10:27:57 dsl Exp $ */
-
-/*-
- * Copyright (c) 1991, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Kenneth Almquist.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <sys/cdefs.h>
-#ifndef lint
-#if 0
-static char sccsid[] = "@(#)parser.c 8.7 (Berkeley) 5/16/95";
-#else
-__RCSID("$NetBSD: parser.c,v 1.57 2004/06/27 10:27:57 dsl Exp $");
-#endif
-#endif /* not lint */
-
-#include <stdlib.h>
-
-#include "shell.h"
-#include "parser.h"
-#include "nodes.h"
-#include "expand.h" /* defines rmescapes() */
-#include "eval.h" /* defines commandname */
-#include "redir.h" /* defines copyfd() */
-#include "syntax.h"
-#include "options.h"
-#include "input.h"
-#include "output.h"
-#include "var.h"
-#include "error.h"
-#include "memalloc.h"
-#include "mystring.h"
-#include "alias.h"
-#include "show.h"
-#ifndef SMALL
-#include "myhistedit.h"
-#endif
-
-/*
- * Shell command parser.
- */
-
-#define EOFMARKLEN 79
-
-/* values returned by readtoken */
-#include "token.h"
-
-#define OPENBRACE '{'
-#define CLOSEBRACE '}'
-
-
-struct heredoc {
- struct heredoc *next; /* next here document in list */
- union node *here; /* redirection node */
- char *eofmark; /* string indicating end of input */
- int striptabs; /* if set, strip leading tabs */
-};
-
-
-
-static int noalias = 0; /* when set, don't handle aliases */
-struct heredoc *heredoclist; /* list of here documents to read */
-int parsebackquote; /* nonzero if we are inside backquotes */
-int doprompt; /* if set, prompt the user */
-int needprompt; /* true if interactive and at start of line */
-int lasttoken; /* last token read */
-MKINIT int tokpushback; /* last token pushed back */
-char *wordtext; /* text of last word returned by readtoken */
-MKINIT int checkkwd; /* 1 == check for kwds, 2 == also eat newlines */
-struct nodelist *backquotelist;
-union node *redirnode;
-struct heredoc *heredoc;
-int quoteflag; /* set if (part of) last token was quoted */
-int startlinno; /* line # where last token started */
-
-
-STATIC union node *list(int);
-STATIC union node *andor(void);
-STATIC union node *pipeline(void);
-STATIC union node *command(void);
-STATIC union node *simplecmd(union node **, union node *);
-STATIC union node *makename(void);
-STATIC void parsefname(void);
-STATIC void parseheredoc(void);
-STATIC int peektoken(void);
-STATIC int readtoken(void);
-STATIC int xxreadtoken(void);
-STATIC int readtoken1(int, char const *, char *, int);
-STATIC int noexpand(char *);
-STATIC void synexpect(int) __attribute__((__noreturn__));
-STATIC void synerror(const char *) __attribute__((__noreturn__));
-STATIC void setprompt(int);
-
-
-/*
- * Read and parse a command. Returns NEOF on end of file. (NULL is a
- * valid parse tree indicating a blank line.)
- */
-
-union node *
-parsecmd(int interact)
-{
- int t;
-
- tokpushback = 0;
- doprompt = interact;
- if (doprompt)
- setprompt(1);
- else
- setprompt(0);
- needprompt = 0;
- t = readtoken();
- if (t == TEOF)
- return NEOF;
- if (t == TNL)
- return NULL;
- tokpushback++;
- return list(1);
-}
-
-
-STATIC union node *
-list(int nlflag)
-{
- union node *n1, *n2, *n3;
- int tok;
-
- checkkwd = 2;
- if (nlflag == 0 && tokendlist[peektoken()])
- return NULL;
- n1 = NULL;
- for (;;) {
- n2 = andor();
- tok = readtoken();
- if (tok == TBACKGND) {
- if (n2->type == NCMD || n2->type == NPIPE) {
- n2->ncmd.backgnd = 1;
- } else if (n2->type == NREDIR) {
- n2->type = NBACKGND;
- } else {
- n3 = (union node *)stalloc(sizeof (struct nredir));
- n3->type = NBACKGND;
- n3->nredir.n = n2;
- n3->nredir.redirect = NULL;
- n2 = n3;
- }
- }
- if (n1 == NULL) {
- n1 = n2;
- }
- else {
- n3 = (union node *)stalloc(sizeof (struct nbinary));
- n3->type = NSEMI;
- n3->nbinary.ch1 = n1;
- n3->nbinary.ch2 = n2;
- n1 = n3;
- }
- switch (tok) {
- case TBACKGND:
- case TSEMI:
- tok = readtoken();
- /* fall through */
- case TNL:
- if (tok == TNL) {
- parseheredoc();
- if (nlflag)
- return n1;
- } else {
- tokpushback++;
- }
- checkkwd = 2;
- if (tokendlist[peektoken()])
- return n1;
- break;
- case TEOF:
- if (heredoclist)
- parseheredoc();
- else
- pungetc(); /* push back EOF on input */
- return n1;
- default:
- if (nlflag)
- synexpect(-1);
- tokpushback++;
- return n1;
- }
- }
-}
-
-
-
-STATIC union node *
-andor(void)
-{
- union node *n1, *n2, *n3;
- int t;
-
- n1 = pipeline();
- for (;;) {
- if ((t = readtoken()) == TAND) {
- t = NAND;
- } else if (t == TOR) {
- t = NOR;
- } else {
- tokpushback++;
- return n1;
- }
- n2 = pipeline();
- n3 = (union node *)stalloc(sizeof (struct nbinary));
- n3->type = t;
- n3->nbinary.ch1 = n1;
- n3->nbinary.ch2 = n2;
- n1 = n3;
- }
-}
-
-
-
-STATIC union node *
-pipeline(void)
-{
- union node *n1, *n2, *pipenode;
- struct nodelist *lp, *prev;
- int negate;
-
- negate = 0;
- TRACE(("pipeline: entered\n"));
- while (readtoken() == TNOT)
- negate = !negate;
- tokpushback++;
- n1 = command();
- if (readtoken() == TPIPE) {
- pipenode = (union node *)stalloc(sizeof (struct npipe));
- pipenode->type = NPIPE;
- pipenode->npipe.backgnd = 0;
- lp = (struct nodelist *)stalloc(sizeof (struct nodelist));
- pipenode->npipe.cmdlist = lp;
- lp->n = n1;
- do {
- prev = lp;
- lp = (struct nodelist *)stalloc(sizeof (struct nodelist));
- lp->n = command();
- prev->next = lp;
- } while (readtoken() == TPIPE);
- lp->next = NULL;
- n1 = pipenode;
- }
- tokpushback++;
- if (negate) {
- n2 = (union node *)stalloc(sizeof (struct nnot));
- n2->type = NNOT;
- n2->nnot.com = n1;
- return n2;
- } else
- return n1;
-}
-
-
-
-STATIC union node *
-command(void)
-{
- union node *n1, *n2;
- union node *ap, **app;
- union node *cp, **cpp;
- union node *redir, **rpp;
- int t, negate = 0;
-
- checkkwd = 2;
- redir = NULL;
- n1 = NULL;
- rpp = &redir;
-
- /* Check for redirection which may precede command */
- while (readtoken() == TREDIR) {
- *rpp = n2 = redirnode;
- rpp = &n2->nfile.next;
- parsefname();
- }
- tokpushback++;
-
- while (readtoken() == TNOT) {
- TRACE(("command: TNOT recognized\n"));
- negate = !negate;
- }
- tokpushback++;
-
- switch (readtoken()) {
- case TIF:
- n1 = (union node *)stalloc(sizeof (struct nif));
- n1->type = NIF;
- n1->nif.test = list(0);
- if (readtoken() != TTHEN)
- synexpect(TTHEN);
- n1->nif.ifpart = list(0);
- n2 = n1;
- while (readtoken() == TELIF) {
- n2->nif.elsepart = (union node *)stalloc(sizeof (struct nif));
- n2 = n2->nif.elsepart;
- n2->type = NIF;
- n2->nif.test = list(0);
- if (readtoken() != TTHEN)
- synexpect(TTHEN);
- n2->nif.ifpart = list(0);
- }
- if (lasttoken == TELSE)
- n2->nif.elsepart = list(0);
- else {
- n2->nif.elsepart = NULL;
- tokpushback++;
- }
- if (readtoken() != TFI)
- synexpect(TFI);
- checkkwd = 1;
- break;
- case TWHILE:
- case TUNTIL: {
- int got;
- n1 = (union node *)stalloc(sizeof (struct nbinary));
- n1->type = (lasttoken == TWHILE)? NWHILE : NUNTIL;
- n1->nbinary.ch1 = list(0);
- if ((got=readtoken()) != TDO) {
-TRACE(("expecting DO got %s %s\n", tokname[got], got == TWORD ? wordtext : ""));
- synexpect(TDO);
- }
- n1->nbinary.ch2 = list(0);
- if (readtoken() != TDONE)
- synexpect(TDONE);
- checkkwd = 1;
- break;
- }
- case TFOR:
- if (readtoken() != TWORD || quoteflag || ! goodname(wordtext))
- synerror("Bad for loop variable");
- n1 = (union node *)stalloc(sizeof (struct nfor));
- n1->type = NFOR;
- n1->nfor.var = wordtext;
- if (readtoken() == TWORD && ! quoteflag && equal(wordtext, "in")) {
- app = ≈
- while (readtoken() == TWORD) {
- n2 = (union node *)stalloc(sizeof (struct narg));
- n2->type = NARG;
- n2->narg.text = wordtext;
- n2->narg.backquote = backquotelist;
- *app = n2;
- app = &n2->narg.next;
- }
- *app = NULL;
- n1->nfor.args = ap;
- if (lasttoken != TNL && lasttoken != TSEMI)
- synexpect(-1);
- } else {
- static char argvars[5] = {CTLVAR, VSNORMAL|VSQUOTE,
- '@', '=', '\0'};
- n2 = (union node *)stalloc(sizeof (struct narg));
- n2->type = NARG;
- n2->narg.text = argvars;
- n2->narg.backquote = NULL;
- n2->narg.next = NULL;
- n1->nfor.args = n2;
- /*
- * Newline or semicolon here is optional (but note
- * that the original Bourne shell only allowed NL).
- */
- if (lasttoken != TNL && lasttoken != TSEMI)
- tokpushback++;
- }
- checkkwd = 2;
- if ((t = readtoken()) == TDO)
- t = TDONE;
- else if (t == TBEGIN)
- t = TEND;
- else
- synexpect(-1);
- n1->nfor.body = list(0);
- if (readtoken() != t)
- synexpect(t);
- checkkwd = 1;
- break;
- case TCASE:
- n1 = (union node *)stalloc(sizeof (struct ncase));
- n1->type = NCASE;
- if (readtoken() != TWORD)
- synexpect(TWORD);
- n1->ncase.expr = n2 = (union node *)stalloc(sizeof (struct narg));
- n2->type = NARG;
- n2->narg.text = wordtext;
- n2->narg.backquote = backquotelist;
- n2->narg.next = NULL;
- while (readtoken() == TNL);
- if (lasttoken != TWORD || ! equal(wordtext, "in"))
- synerror("expecting \"in\"");
- cpp = &n1->ncase.cases;
- noalias = 1;
- checkkwd = 2, readtoken();
- do {
- *cpp = cp = (union node *)stalloc(sizeof (struct nclist));
- cp->type = NCLIST;
- app = &cp->nclist.pattern;
- for (;;) {
- *app = ap = (union node *)stalloc(sizeof (struct narg));
- ap->type = NARG;
- ap->narg.text = wordtext;
- ap->narg.backquote = backquotelist;
- if (checkkwd = 2, readtoken() != TPIPE)
- break;
- app = &ap->narg.next;
- readtoken();
- }
- ap->narg.next = NULL;
- noalias = 0;
- if (lasttoken != TRP) {
- synexpect(TRP);
- }
- cp->nclist.body = list(0);
-
- checkkwd = 2;
- if ((t = readtoken()) != TESAC) {
- if (t != TENDCASE) {
- noalias = 0;
- synexpect(TENDCASE);
- } else {
- noalias = 1;
- checkkwd = 2;
- readtoken();
- }
- }
- cpp = &cp->nclist.next;
- } while(lasttoken != TESAC);
- noalias = 0;
- *cpp = NULL;
- checkkwd = 1;
- break;
- case TLP:
- n1 = (union node *)stalloc(sizeof (struct nredir));
- n1->type = NSUBSHELL;
- n1->nredir.n = list(0);
- n1->nredir.redirect = NULL;
- if (readtoken() != TRP)
- synexpect(TRP);
- checkkwd = 1;
- break;
- case TBEGIN:
- n1 = list(0);
- if (readtoken() != TEND)
- synexpect(TEND);
- checkkwd = 1;
- break;
- /* Handle an empty command like other simple commands. */
- case TSEMI:
- /*
- * An empty command before a ; doesn't make much sense, and
- * should certainly be disallowed in the case of `if ;'.
- */
- if (!redir)
- synexpect(-1);
- case TAND:
- case TOR:
- case TNL:
- case TEOF:
- case TWORD:
- case TRP:
- tokpushback++;
- n1 = simplecmd(rpp, redir);
- goto checkneg;
- default:
- synexpect(-1);
- /* NOTREACHED */
- }
-
- /* Now check for redirection which may follow command */
- while (readtoken() == TREDIR) {
- *rpp = n2 = redirnode;
- rpp = &n2->nfile.next;
- parsefname();
- }
- tokpushback++;
- *rpp = NULL;
- if (redir) {
- if (n1->type != NSUBSHELL) {
- n2 = (union node *)stalloc(sizeof (struct nredir));
- n2->type = NREDIR;
- n2->nredir.n = n1;
- n1 = n2;
- }
- n1->nredir.redirect = redir;
- }
-
-checkneg:
- if (negate) {
- n2 = (union node *)stalloc(sizeof (struct nnot));
- n2->type = NNOT;
- n2->nnot.com = n1;
- return n2;
- }
- else
- return n1;
-}
-
-
-STATIC union node *
-simplecmd(union node **rpp, union node *redir)
-{
- union node *args, **app;
- union node **orig_rpp = rpp;
- union node *n = NULL, *n2;
- int negate = 0;
-
- /* If we don't have any redirections already, then we must reset */
- /* rpp to be the address of the local redir variable. */
- if (redir == 0)
- rpp = &redir;
-
- args = NULL;
- app = &args;
- /*
- * We save the incoming value, because we need this for shell
- * functions. There can not be a redirect or an argument between
- * the function name and the open parenthesis.
- */
- orig_rpp = rpp;
-
- while (readtoken() == TNOT) {
- TRACE(("command: TNOT recognized\n"));
- negate = !negate;
- }
- tokpushback++;
-
- for (;;) {
- if (readtoken() == TWORD) {
- n = (union node *)stalloc(sizeof (struct narg));
- n->type = NARG;
- n->narg.text = wordtext;
- n->narg.backquote = backquotelist;
- *app = n;
- app = &n->narg.next;
- } else if (lasttoken == TREDIR) {
- *rpp = n = redirnode;
- rpp = &n->nfile.next;
- parsefname(); /* read name of redirection file */
- } else if (lasttoken == TLP && app == &args->narg.next
- && rpp == orig_rpp) {
- /* We have a function */
- if (readtoken() != TRP)
- synexpect(TRP);
-#ifdef notdef
- if (! goodname(n->narg.text))
- synerror("Bad function name");
-#endif
- n->type = NDEFUN;
- n->narg.next = command();
- goto checkneg;
- } else {
- tokpushback++;
- break;
- }
- }
- *app = NULL;
- *rpp = NULL;
- n = (union node *)stalloc(sizeof (struct ncmd));
- n->type = NCMD;
- n->ncmd.backgnd = 0;
- n->ncmd.args = args;
- n->ncmd.redirect = redir;
-
-checkneg:
- if (negate) {
- n2 = (union node *)stalloc(sizeof (struct nnot));
- n2->type = NNOT;
- n2->nnot.com = n;
- return n2;
- }
- else
- return n;
-}
-
-STATIC union node *
-makename(void)
-{
- union node *n;
-
- n = (union node *)stalloc(sizeof (struct narg));
- n->type = NARG;
- n->narg.next = NULL;
- n->narg.text = wordtext;
- n->narg.backquote = backquotelist;
- return n;
-}
-
-void fixredir(union node *n, const char *text, int err)
- {
- TRACE(("Fix redir %s %d\n", text, err));
- if (!err)
- n->ndup.vname = NULL;
-
- if (is_digit(text[0]) && text[1] == '\0')
- n->ndup.dupfd = digit_val(text[0]);
- else if (text[0] == '-' && text[1] == '\0')
- n->ndup.dupfd = -1;
- else {
-
- if (err)
- synerror("Bad fd number");
- else
- n->ndup.vname = makename();
- }
-}
-
-
-STATIC void
-parsefname(void)
-{
- union node *n = redirnode;
-
- if (readtoken() != TWORD)
- synexpect(-1);
- if (n->type == NHERE) {
- struct heredoc *here = heredoc;
- struct heredoc *p;
- int i;
-
- if (quoteflag == 0)
- n->type = NXHERE;
- TRACE(("Here document %d\n", n->type));
- if (here->striptabs) {
- while (*wordtext == '\t')
- wordtext++;
- }
- if (! noexpand(wordtext) || (i = strlen(wordtext)) == 0 || i > EOFMARKLEN)
- synerror("Illegal eof marker for << redirection");
- rmescapes(wordtext);
- here->eofmark = wordtext;
- here->next = NULL;
- if (heredoclist == NULL)
- heredoclist = here;
- else {
- for (p = heredoclist ; p->next ; p = p->next);
- p->next = here;
- }
- } else if (n->type == NTOFD || n->type == NFROMFD) {
- fixredir(n, wordtext, 0);
- } else {
- n->nfile.fname = makename();
- }
-}
-
-
-/*
- * Input any here documents.
- */
-
-STATIC void
-parseheredoc(void)
-{
- struct heredoc *here;
- union node *n;
-
- while (heredoclist) {
- here = heredoclist;
- heredoclist = here->next;
- if (needprompt) {
- setprompt(2);
- needprompt = 0;
- }
- readtoken1(pgetc(), here->here->type == NHERE? SQSYNTAX : DQSYNTAX,
- here->eofmark, here->striptabs);
- n = (union node *)stalloc(sizeof (struct narg));
- n->narg.type = NARG;
- n->narg.next = NULL;
- n->narg.text = wordtext;
- n->narg.backquote = backquotelist;
- here->here->nhere.doc = n;
- }
-}
-
-STATIC int
-peektoken(void)
-{
- int t;
-
- t = readtoken();
- tokpushback++;
- return (t);
-}
-
-STATIC int
-readtoken(void)
-{
- int t;
- int savecheckkwd = checkkwd;
-#ifdef DEBUG
- int alreadyseen = tokpushback;
-#endif
- struct alias *ap;
-
- top:
- t = xxreadtoken();
-
- if (checkkwd) {
- /*
- * eat newlines
- */
- if (checkkwd == 2) {
- checkkwd = 0;
- while (t == TNL) {
- parseheredoc();
- t = xxreadtoken();
- }
- } else
- checkkwd = 0;
- /*
- * check for keywords and aliases
- */
- if (t == TWORD && !quoteflag)
- {
- const char *const *pp;
-
- for (pp = parsekwd; *pp; pp++) {
- if (**pp == *wordtext && equal(*pp, wordtext))
- {
- lasttoken = t = pp -
- parsekwd + KWDOFFSET;
- TRACE(("keyword %s recognized\n", tokname[t]));
- goto out;
- }
- }
- if(!noalias &&
- (ap = lookupalias(wordtext, 1)) != NULL) {
- pushstring(ap->val, strlen(ap->val), ap);
- checkkwd = savecheckkwd;
- goto top;
- }
- }
-out:
- checkkwd = (t == TNOT) ? savecheckkwd : 0;
- }
-#ifdef DEBUG
- if (!alreadyseen)
- TRACE(("token %s %s\n", tokname[t], t == TWORD ? wordtext : ""));
- else
- TRACE(("reread token %s %s\n", tokname[t], t == TWORD ? wordtext : ""));
-#endif
- return (t);
-}
-
-
-/*
- * Read the next input token.
- * If the token is a word, we set backquotelist to the list of cmds in
- * backquotes. We set quoteflag to true if any part of the word was
- * quoted.
- * If the token is TREDIR, then we set redirnode to a structure containing
- * the redirection.
- * In all cases, the variable startlinno is set to the number of the line
- * on which the token starts.
- *
- * [Change comment: here documents and internal procedures]
- * [Readtoken shouldn't have any arguments. Perhaps we should make the
- * word parsing code into a separate routine. In this case, readtoken
- * doesn't need to have any internal procedures, but parseword does.
- * We could also make parseoperator in essence the main routine, and
- * have parseword (readtoken1?) handle both words and redirection.]
- */
-
-#define RETURN(token) return lasttoken = token
-
-STATIC int
-xxreadtoken(void)
-{
- int c;
-
- if (tokpushback) {
- tokpushback = 0;
- return lasttoken;
- }
- if (needprompt) {
- setprompt(2);
- needprompt = 0;
- }
- startlinno = plinno;
- for (;;) { /* until token or start of word found */
- c = pgetc_macro();
- if (c == ' ' || c == '\t')
- continue; /* quick check for white space first */
- switch (c) {
- case ' ': case '\t':
- continue;
- case '#':
- while ((c = pgetc()) != '\n' && c != PEOF);
- pungetc();
- continue;
- case '\\':
- if (pgetc() == '\n') {
- startlinno = ++plinno;
- if (doprompt)
- setprompt(2);
- else
- setprompt(0);
- continue;
- }
- pungetc();
- goto breakloop;
- case '\n':
- plinno++;
- needprompt = doprompt;
- RETURN(TNL);
- case PEOF:
- RETURN(TEOF);
- case '&':
- if (pgetc() == '&')
- RETURN(TAND);
- pungetc();
- RETURN(TBACKGND);
- case '|':
- if (pgetc() == '|')
- RETURN(TOR);
- pungetc();
- RETURN(TPIPE);
- case ';':
- if (pgetc() == ';')
- RETURN(TENDCASE);
- pungetc();
- RETURN(TSEMI);
- case '(':
- RETURN(TLP);
- case ')':
- RETURN(TRP);
- default:
- goto breakloop;
- }
- }
-breakloop:
- return readtoken1(c, BASESYNTAX, (char *)NULL, 0);
-#undef RETURN
-}
-
-
-
-/*
- * If eofmark is NULL, read a word or a redirection symbol. If eofmark
- * is not NULL, read a here document. In the latter case, eofmark is the
- * word which marks the end of the document and striptabs is true if
- * leading tabs should be stripped from the document. The argument firstc
- * is the first character of the input token or document.
- *
- * Because C does not have internal subroutines, I have simulated them
- * using goto's to implement the subroutine linkage. The following macros
- * will run code that appears at the end of readtoken1.
- */
-
-#define CHECKEND() {goto checkend; checkend_return:;}
-#define PARSEREDIR() {goto parseredir; parseredir_return:;}
-#define PARSESUB() {goto parsesub; parsesub_return:;}
-#define PARSEBACKQOLD() {oldstyle = 1; goto parsebackq; parsebackq_oldreturn:;}
-#define PARSEBACKQNEW() {oldstyle = 0; goto parsebackq; parsebackq_newreturn:;}
-#define PARSEARITH() {goto parsearith; parsearith_return:;}
-
-/*
- * Keep track of nested doublequotes in dblquote and doublequotep.
- * We use dblquote for the first 32 levels, and we expand to a malloc'ed
- * region for levels above that. Usually we never need to malloc.
- * This code assumes that an int is 32 bits. We don't use uint32_t,
- * because the rest of the code does not.
- */
-#define ISDBLQUOTE() ((varnest < 32) ? (dblquote & (1 << varnest)) : \
- (dblquotep[(varnest / 32) - 1] & (1 << (varnest % 32))))
-
-#define SETDBLQUOTE() \
- if (varnest < 32) \
- dblquote |= (1 << varnest); \
- else \
- dblquotep[(varnest / 32) - 1] |= (1 << (varnest % 32))
-
-#define CLRDBLQUOTE() \
- if (varnest < 32) \
- dblquote &= ~(1 << varnest); \
- else \
- dblquotep[(varnest / 32) - 1] &= ~(1 << (varnest % 32))
-
-STATIC int
-readtoken1(int firstc, char const *syntax, char *eofmark, int striptabs)
-{
- int c = firstc;
- char *out;
- int len;
- char line[EOFMARKLEN + 1];
- struct nodelist *bqlist;
- int quotef;
- int *dblquotep = NULL;
- size_t maxnest = 32;
- int dblquote;
- int varnest; /* levels of variables expansion */
- int arinest; /* levels of arithmetic expansion */
- int parenlevel; /* levels of parens in arithmetic */
- int oldstyle;
- char const *prevsyntax = NULL; /* syntax before arithmetic */
-#if __GNUC__
- /* Avoid longjmp clobbering */
- (void) &maxnest;
- (void) &dblquotep;
- (void) &out;
- (void) "ef;
- (void) &dblquote;
- (void) &varnest;
- (void) &arinest;
- (void) &parenlevel;
- (void) &oldstyle;
- (void) &prevsyntax;
- (void) &syntax;
-#endif
-
- startlinno = plinno;
- dblquote = 0;
- varnest = 0;
- if (syntax == DQSYNTAX) {
- SETDBLQUOTE();
- }
- quotef = 0;
- bqlist = NULL;
- arinest = 0;
- parenlevel = 0;
-
- STARTSTACKSTR(out);
- loop: { /* for each line, until end of word */
-#if ATTY
- if (c == '\034' && doprompt
- && attyset() && ! equal(termval(), "emacs")) {
- attyline();
- if (syntax == BASESYNTAX)
- return readtoken();
- c = pgetc();
- goto loop;
- }
-#endif
- CHECKEND(); /* set c to PEOF if at end of here document */
- for (;;) { /* until end of line or end of word */
- CHECKSTRSPACE(4, out); /* permit 4 calls to USTPUTC */
- switch(syntax[c]) {
- case CNL: /* '\n' */
- if (syntax == BASESYNTAX)
- goto endword; /* exit outer loop */
- USTPUTC(c, out);
- plinno++;
- if (doprompt)
- setprompt(2);
- else
- setprompt(0);
- c = pgetc();
- goto loop; /* continue outer loop */
- case CWORD:
- USTPUTC(c, out);
- break;
- case CCTL:
- if (eofmark == NULL || ISDBLQUOTE())
- USTPUTC(CTLESC, out);
- USTPUTC(c, out);
- break;
- case CBACK: /* backslash */
- c = pgetc();
- if (c == PEOF) {
- USTPUTC('\\', out);
- pungetc();
- break;
- }
- if (c == '\n') {
- if (doprompt)
- setprompt(2);
- else
- setprompt(0);
- break;
- }
- quotef = 1;
- if (ISDBLQUOTE() && c != '\\' &&
- c != '`' && c != '$' &&
- (c != '"' || eofmark != NULL))
- USTPUTC('\\', out);
- if (SQSYNTAX[c] == CCTL)
- USTPUTC(CTLESC, out);
- else if (eofmark == NULL) {
- USTPUTC(CTLQUOTEMARK, out);
- USTPUTC(c, out);
- if (varnest != 0)
- USTPUTC(CTLQUOTEEND, out);
- break;
- }
- USTPUTC(c, out);
- break;
- case CSQUOTE:
- if (syntax != SQSYNTAX) {
- if (eofmark == NULL)
- USTPUTC(CTLQUOTEMARK, out);
- quotef = 1;
- syntax = SQSYNTAX;
- break;
- }
- if (eofmark != NULL && arinest == 0 &&
- varnest == 0) {
- /* Ignore inside quoted here document */
- USTPUTC(c, out);
- break;
- }
- /* End of single quotes... */
- if (arinest)
- syntax = ARISYNTAX;
- else {
- syntax = BASESYNTAX;
- if (varnest != 0)
- USTPUTC(CTLQUOTEEND, out);
- }
- break;
- case CDQUOTE:
- if (eofmark != NULL && arinest == 0 &&
- varnest == 0) {
- /* Ignore inside here document */
- USTPUTC(c, out);
- break;
- }
- quotef = 1;
- if (arinest) {
- if (ISDBLQUOTE()) {
- syntax = ARISYNTAX;
- CLRDBLQUOTE();
- } else {
- syntax = DQSYNTAX;
- SETDBLQUOTE();
- USTPUTC(CTLQUOTEMARK, out);
- }
- break;
- }
- if (eofmark != NULL)
- break;
- if (ISDBLQUOTE()) {
- if (varnest != 0)
- USTPUTC(CTLQUOTEEND, out);
- syntax = BASESYNTAX;
- CLRDBLQUOTE();
- } else {
- syntax = DQSYNTAX;
- SETDBLQUOTE();
- USTPUTC(CTLQUOTEMARK, out);
- }
- break;
- case CVAR: /* '$' */
- PARSESUB(); /* parse substitution */
- break;
- case CENDVAR: /* CLOSEBRACE */
- if (varnest > 0 && !ISDBLQUOTE()) {
- varnest--;
- USTPUTC(CTLENDVAR, out);
- } else {
- USTPUTC(c, out);
- }
- break;
- case CLP: /* '(' in arithmetic */
- parenlevel++;
- USTPUTC(c, out);
- break;
- case CRP: /* ')' in arithmetic */
- if (parenlevel > 0) {
- USTPUTC(c, out);
- --parenlevel;
- } else {
- if (pgetc() == ')') {
- if (--arinest == 0) {
- USTPUTC(CTLENDARI, out);
- syntax = prevsyntax;
- if (syntax == DQSYNTAX)
- SETDBLQUOTE();
- else
- CLRDBLQUOTE();
- } else
- USTPUTC(')', out);
- } else {
- /*
- * unbalanced parens
- * (don't 2nd guess - no error)
- */
- pungetc();
- USTPUTC(')', out);
- }
- }
- break;
- case CBQUOTE: /* '`' */
- PARSEBACKQOLD();
- break;
- case CEOF:
- goto endword; /* exit outer loop */
- default:
- if (varnest == 0)
- goto endword; /* exit outer loop */
- USTPUTC(c, out);
- }
- c = pgetc_macro();
- }
- }
-endword:
- if (syntax == ARISYNTAX)
- synerror("Missing '))'");
- if (syntax != BASESYNTAX && ! parsebackquote && eofmark == NULL)
- synerror("Unterminated quoted string");
- if (varnest != 0) {
- startlinno = plinno;
- /* { */
- synerror("Missing '}'");
- }
- USTPUTC('\0', out);
- len = out - stackblock();
- out = stackblock();
- if (eofmark == NULL) {
- if ((c == '>' || c == '<')
- && quotef == 0
- && len <= 2
- && (*out == '\0' || is_digit(*out))) {
- PARSEREDIR();
- return lasttoken = TREDIR;
- } else {
- pungetc();
- }
- }
- quoteflag = quotef;
- backquotelist = bqlist;
- grabstackblock(len);
- wordtext = out;
- if (dblquotep != NULL)
- ckfree(dblquotep);
- return lasttoken = TWORD;
-/* end of readtoken routine */
-
-
-
-/*
- * Check to see whether we are at the end of the here document. When this
- * is called, c is set to the first character of the next input line. If
- * we are at the end of the here document, this routine sets the c to PEOF.
- */
-
-checkend: {
- if (eofmark) {
- if (striptabs) {
- while (c == '\t')
- c = pgetc();
- }
- if (c == *eofmark) {
- if (pfgets(line, sizeof line) != NULL) {
- char *p, *q;
-
- p = line;
- for (q = eofmark + 1 ; *q && *p == *q ; p++, q++);
- if (*p == '\n' && *q == '\0') {
- c = PEOF;
- plinno++;
- needprompt = doprompt;
- } else {
- pushstring(line, strlen(line), NULL);
- }
- }
- }
- }
- goto checkend_return;
-}
-
-
-/*
- * Parse a redirection operator. The variable "out" points to a string
- * specifying the fd to be redirected. The variable "c" contains the
- * first character of the redirection operator.
- */
-
-parseredir: {
- char fd = *out;
- union node *np;
-
- np = (union node *)stalloc(sizeof (struct nfile));
- if (c == '>') {
- np->nfile.fd = 1;
- c = pgetc();
- if (c == '>')
- np->type = NAPPEND;
- else if (c == '|')
- np->type = NCLOBBER;
- else if (c == '&')
- np->type = NTOFD;
- else {
- np->type = NTO;
- pungetc();
- }
- } else { /* c == '<' */
- np->nfile.fd = 0;
- switch (c = pgetc()) {
- case '<':
- if (sizeof (struct nfile) != sizeof (struct nhere)) {
- np = (union node *)stalloc(sizeof (struct nhere));
- np->nfile.fd = 0;
- }
- np->type = NHERE;
- heredoc = (struct heredoc *)stalloc(sizeof (struct heredoc));
- heredoc->here = np;
- if ((c = pgetc()) == '-') {
- heredoc->striptabs = 1;
- } else {
- heredoc->striptabs = 0;
- pungetc();
- }
- break;
-
- case '&':
- np->type = NFROMFD;
- break;
-
- case '>':
- np->type = NFROMTO;
- break;
-
- default:
- np->type = NFROM;
- pungetc();
- break;
- }
- }
- if (fd != '\0')
- np->nfile.fd = digit_val(fd);
- redirnode = np;
- goto parseredir_return;
-}
-
-
-/*
- * Parse a substitution. At this point, we have read the dollar sign
- * and nothing else.
- */
-
-parsesub: {
- int subtype;
- int typeloc;
- int flags;
- char *p;
- static const char types[] = "}-+?=";
-
- c = pgetc();
- if (c != '(' && c != OPENBRACE && !is_name(c) && !is_special(c)) {
- USTPUTC('$', out);
- pungetc();
- } else if (c == '(') { /* $(command) or $((arith)) */
- if (pgetc() == '(') {
- PARSEARITH();
- } else {
- pungetc();
- PARSEBACKQNEW();
- }
- } else {
- USTPUTC(CTLVAR, out);
- typeloc = out - stackblock();
- USTPUTC(VSNORMAL, out);
- subtype = VSNORMAL;
- if (c == OPENBRACE) {
- c = pgetc();
- if (c == '#') {
- if ((c = pgetc()) == CLOSEBRACE)
- c = '#';
- else
- subtype = VSLENGTH;
- }
- else
- subtype = 0;
- }
- if (is_name(c)) {
- do {
- STPUTC(c, out);
- c = pgetc();
- } while (is_in_name(c));
- } else if (is_digit(c)) {
- do {
- USTPUTC(c, out);
- c = pgetc();
- } while (is_digit(c));
- }
- else if (is_special(c)) {
- USTPUTC(c, out);
- c = pgetc();
- }
- else
-badsub: synerror("Bad substitution");
-
- STPUTC('=', out);
- flags = 0;
- if (subtype == 0) {
- switch (c) {
- case ':':
- flags = VSNUL;
- c = pgetc();
- /*FALLTHROUGH*/
- default:
- p = strchr(types, c);
- if (p == NULL)
- goto badsub;
- subtype = p - types + VSNORMAL;
- break;
- case '%':
- case '#':
- {
- int cc = c;
- subtype = c == '#' ? VSTRIMLEFT :
- VSTRIMRIGHT;
- c = pgetc();
- if (c == cc)
- subtype++;
- else
- pungetc();
- break;
- }
- }
- } else {
- pungetc();
- }
- if (ISDBLQUOTE() || arinest)
- flags |= VSQUOTE;
- *(stackblock() + typeloc) = subtype | flags;
- if (subtype != VSNORMAL) {
- varnest++;
- if (varnest >= maxnest) {
- dblquotep = ckrealloc(dblquotep, maxnest / 8);
- dblquotep[(maxnest / 32) - 1] = 0;
- maxnest += 32;
- }
- }
- }
- goto parsesub_return;
-}
-
-
-/*
- * Called to parse command substitutions. Newstyle is set if the command
- * is enclosed inside $(...); nlpp is a pointer to the head of the linked
- * list of commands (passed by reference), and savelen is the number of
- * characters on the top of the stack which must be preserved.
- */
-
-parsebackq: {
- struct nodelist **nlpp;
- int savepbq;
- union node *n;
- char *volatile str;
- struct jmploc jmploc;
- struct jmploc *volatile savehandler;
- int savelen;
- int saveprompt;
-#ifdef __GNUC__
- (void) &saveprompt;
-#endif
-
- savepbq = parsebackquote;
- if (setjmp(jmploc.loc)) {
- if (str)
- ckfree(str);
- parsebackquote = 0;
- handler = savehandler;
- longjmp(handler->loc, 1);
- }
- INTOFF;
- str = NULL;
- savelen = out - stackblock();
- if (savelen > 0) {
- str = ckmalloc(savelen);
- memcpy(str, stackblock(), savelen);
- }
- savehandler = handler;
- handler = &jmploc;
- INTON;
- if (oldstyle) {
- /* We must read until the closing backquote, giving special
- treatment to some slashes, and then push the string and
- reread it as input, interpreting it normally. */
- char *pout;
- int pc;
- int psavelen;
- char *pstr;
-
-
- STARTSTACKSTR(pout);
- for (;;) {
- if (needprompt) {
- setprompt(2);
- needprompt = 0;
- }
- switch (pc = pgetc()) {
- case '`':
- goto done;
-
- case '\\':
- if ((pc = pgetc()) == '\n') {
- plinno++;
- if (doprompt)
- setprompt(2);
- else
- setprompt(0);
- /*
- * If eating a newline, avoid putting
- * the newline into the new character
- * stream (via the STPUTC after the
- * switch).
- */
- continue;
- }
- if (pc != '\\' && pc != '`' && pc != '$'
- && (!ISDBLQUOTE() || pc != '"'))
- STPUTC('\\', pout);
- break;
-
- case '\n':
- plinno++;
- needprompt = doprompt;
- break;
-
- case PEOF:
- startlinno = plinno;
- synerror("EOF in backquote substitution");
- break;
-
- default:
- break;
- }
- STPUTC(pc, pout);
- }
-done:
- STPUTC('\0', pout);
- psavelen = pout - stackblock();
- if (psavelen > 0) {
- pstr = grabstackstr(pout);
- setinputstring(pstr, 1);
- }
- }
- nlpp = &bqlist;
- while (*nlpp)
- nlpp = &(*nlpp)->next;
- *nlpp = (struct nodelist *)stalloc(sizeof (struct nodelist));
- (*nlpp)->next = NULL;
- parsebackquote = oldstyle;
-
- if (oldstyle) {
- saveprompt = doprompt;
- doprompt = 0;
- }
-
- n = list(0);
-
- if (oldstyle)
- doprompt = saveprompt;
- else {
- if (readtoken() != TRP)
- synexpect(TRP);
- }
-
- (*nlpp)->n = n;
- if (oldstyle) {
- /*
- * Start reading from old file again, ignoring any pushed back
- * tokens left from the backquote parsing
- */
- popfile();
- tokpushback = 0;
- }
- while (stackblocksize() <= savelen)
- growstackblock();
- STARTSTACKSTR(out);
- if (str) {
- memcpy(out, str, savelen);
- STADJUST(savelen, out);
- INTOFF;
- ckfree(str);
- str = NULL;
- INTON;
- }
- parsebackquote = savepbq;
- handler = savehandler;
- if (arinest || ISDBLQUOTE())
- USTPUTC(CTLBACKQ | CTLQUOTE, out);
- else
- USTPUTC(CTLBACKQ, out);
- if (oldstyle)
- goto parsebackq_oldreturn;
- else
- goto parsebackq_newreturn;
-}
-
-/*
- * Parse an arithmetic expansion (indicate start of one and set state)
- */
-parsearith: {
-
- if (++arinest == 1) {
- prevsyntax = syntax;
- syntax = ARISYNTAX;
- USTPUTC(CTLARI, out);
- if (ISDBLQUOTE())
- USTPUTC('"',out);
- else
- USTPUTC(' ',out);
- } else {
- /*
- * we collapse embedded arithmetic expansion to
- * parenthesis, which should be equivalent
- */
- USTPUTC('(', out);
- }
- goto parsearith_return;
-}
-
-} /* end of readtoken */
-
-
-
-#ifdef mkinit
-RESET {
- tokpushback = 0;
- checkkwd = 0;
-}
-#endif
-
-/*
- * Returns true if the text contains nothing to expand (no dollar signs
- * or backquotes).
- */
-
-STATIC int
-noexpand(char *text)
-{
- char *p;
- char c;
-
- p = text;
- while ((c = *p++) != '\0') {
- if (c == CTLQUOTEMARK)
- continue;
- if (c == CTLESC)
- p++;
- else if (BASESYNTAX[(int)c] == CCTL)
- return 0;
- }
- return 1;
-}
-
-
-/*
- * Return true if the argument is a legal variable name (a letter or
- * underscore followed by zero or more letters, underscores, and digits).
- */
-
-int
-goodname(char *name)
- {
- char *p;
-
- p = name;
- if (! is_name(*p))
- return 0;
- while (*++p) {
- if (! is_in_name(*p))
- return 0;
- }
- return 1;
-}
-
-
-/*
- * Called when an unexpected token is read during the parse. The argument
- * is the token that is expected, or -1 if more than one type of token can
- * occur at this point.
- */
-
-STATIC void
-synexpect(int token)
-{
- char msg[64];
-
- if (token >= 0) {
- fmtstr(msg, 64, "%s unexpected (expecting %s)",
- tokname[lasttoken], tokname[token]);
- } else {
- fmtstr(msg, 64, "%s unexpected", tokname[lasttoken]);
- }
- synerror(msg);
- /* NOTREACHED */
-}
-
-
-STATIC void
-synerror(const char *msg)
-{
- if (commandname)
- outfmt(&errout, "%s: %d: ", commandname, startlinno);
- outfmt(&errout, "Syntax error: %s\n", msg);
- error((char *)NULL);
- /* NOTREACHED */
-}
-
-STATIC void
-setprompt(int which)
-{
- whichprompt = which;
-
-#ifdef WITH_HISTORY
- if (!el)
-#endif
-#ifdef WITH_LINENOISE
- if (! in_interactive_mode() )
-#endif
- out2str(getprompt(NULL));
-}
-
-/*
- * called by editline -- any expansions to the prompt
- * should be added here.
- */
-const char *
-getprompt(void *unused)
- {
- switch (whichprompt) {
- case 0:
- return "";
- case 1:
- return ps1val();
- case 2:
- return ps2val();
- default:
- return "<internal prompt error>";
- }
-}
diff --git a/sh/parser.h b/sh/parser.h
deleted file mode 100644
index b343c71..0000000
--- a/sh/parser.h
+++ /dev/null
@@ -1,82 +0,0 @@
-/* $NetBSD: parser.h,v 1.17 2004/06/26 22:09:49 dsl Exp $ */
-
-/*-
- * Copyright (c) 1991, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Kenneth Almquist.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * @(#)parser.h 8.3 (Berkeley) 5/4/95
- */
-
-/* control characters in argument strings */
-#define CTL_FIRST '\201' /* first 'special' character */
-#define CTLESC '\201' /* escape next character */
-#define CTLVAR '\202' /* variable defn */
-#define CTLENDVAR '\203'
-#define CTLBACKQ '\204'
-#define CTLQUOTE 01 /* ored with CTLBACKQ code if in quotes */
-/* CTLBACKQ | CTLQUOTE == '\205' */
-#define CTLARI '\206' /* arithmetic expression */
-#define CTLENDARI '\207'
-#define CTLQUOTEMARK '\210'
-#define CTLQUOTEEND '\211' /* only inside ${...} */
-#define CTL_LAST '\211' /* last 'special' character */
-
-/* variable substitution byte (follows CTLVAR) */
-#define VSTYPE 0x0f /* type of variable substitution */
-#define VSNUL 0x10 /* colon--treat the empty string as unset */
-#define VSQUOTE 0x80 /* inside double quotes--suppress splitting */
-
-/* values of VSTYPE field */
-#define VSNORMAL 0x1 /* normal variable: $var or ${var} */
-#define VSMINUS 0x2 /* ${var-text} */
-#define VSPLUS 0x3 /* ${var+text} */
-#define VSQUESTION 0x4 /* ${var?message} */
-#define VSASSIGN 0x5 /* ${var=text} */
-#define VSTRIMLEFT 0x6 /* ${var#pattern} */
-#define VSTRIMLEFTMAX 0x7 /* ${var##pattern} */
-#define VSTRIMRIGHT 0x8 /* ${var%pattern} */
-#define VSTRIMRIGHTMAX 0x9 /* ${var%%pattern} */
-#define VSLENGTH 0xa /* ${#var} */
-
-
-/*
- * NEOF is returned by parsecmd when it encounters an end of file. It
- * must be distinct from NULL, so we use the address of a variable that
- * happens to be handy.
- */
-extern int tokpushback;
-#define NEOF ((union node *)&tokpushback)
-extern int whichprompt; /* 1 == PS1, 2 == PS2 */
-
-
-union node *parsecmd(int);
-void fixredir(union node *, const char *, int);
-int goodname(char *);
-const char *getprompt(void *);
diff --git a/sh/redir.c b/sh/redir.c
deleted file mode 100644
index 5c4c286..0000000
--- a/sh/redir.c
+++ /dev/null
@@ -1,389 +0,0 @@
-/* $NetBSD: redir.c,v 1.29 2004/07/08 03:57:33 christos Exp $ */
-
-/*-
- * Copyright (c) 1991, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Kenneth Almquist.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <sys/cdefs.h>
-#ifndef lint
-#if 0
-static char sccsid[] = "@(#)redir.c 8.2 (Berkeley) 5/4/95";
-#else
-__RCSID("$NetBSD: redir.c,v 1.29 2004/07/08 03:57:33 christos Exp $");
-#endif
-#endif /* not lint */
-
-#include <sys/types.h>
-#include <sys/param.h> /* PIPE_BUF */
-#include <signal.h>
-#include <string.h>
-#include <fcntl.h>
-#include <errno.h>
-#include <unistd.h>
-#include <stdlib.h>
-
-/*
- * Code for dealing with input/output redirection.
- */
-
-#include "main.h"
-#include "shell.h"
-#include "nodes.h"
-#include "jobs.h"
-#include "options.h"
-#include "expand.h"
-#include "redir.h"
-#include "output.h"
-#include "memalloc.h"
-#include "error.h"
-
-
-#define EMPTY -2 /* marks an unused slot in redirtab */
-#ifndef PIPE_BUF
-# define PIPESIZE 4096 /* amount of buffering in a pipe */
-#else
-# define PIPESIZE PIPE_BUF
-#endif
-
-#define signal bsd_signal
-
-MKINIT
-struct redirtab {
- struct redirtab *next;
- short renamed[10];
-};
-
-
-MKINIT struct redirtab *redirlist;
-
-/*
- * We keep track of whether or not fd0 has been redirected. This is for
- * background commands, where we want to redirect fd0 to /dev/null only
- * if it hasn't already been redirected.
-*/
-int fd0_redirected = 0;
-
-STATIC void openredirect(union node *, char[10], int);
-STATIC int openhere(union node *);
-
-
-/*
- * Process a list of redirection commands. If the REDIR_PUSH flag is set,
- * old file descriptors are stashed away so that the redirection can be
- * undone by calling popredir. If the REDIR_BACKQ flag is set, then the
- * standard output, and the standard error if it becomes a duplicate of
- * stdout, is saved in memory.
- */
-
-void
-redirect(union node *redir, int flags)
-{
- union node *n;
- struct redirtab *sv = NULL;
- int i;
- int fd;
- int try;
- char memory[10]; /* file descriptors to write to memory */
-
- for (i = 10 ; --i >= 0 ; )
- memory[i] = 0;
- memory[1] = flags & REDIR_BACKQ;
- if (flags & REDIR_PUSH) {
- /* We don't have to worry about REDIR_VFORK here, as
- * flags & REDIR_PUSH is never true if REDIR_VFORK is set.
- */
- sv = ckmalloc(sizeof (struct redirtab));
- for (i = 0 ; i < 10 ; i++)
- sv->renamed[i] = EMPTY;
- sv->next = redirlist;
- redirlist = sv;
- }
- for (n = redir ; n ; n = n->nfile.next) {
- fd = n->nfile.fd;
- try = 0;
- if ((n->nfile.type == NTOFD || n->nfile.type == NFROMFD) &&
- n->ndup.dupfd == fd)
- continue; /* redirect from/to same file descriptor */
-
- if ((flags & REDIR_PUSH) && sv->renamed[fd] == EMPTY) {
- INTOFF;
-again:
- if ((i = fcntl(fd, F_DUPFD, 10)) == -1) {
- switch (errno) {
- case EBADF:
- if (!try) {
- openredirect(n, memory, flags);
- try++;
- goto again;
- }
- /* FALLTHROUGH*/
- default:
- INTON;
- error("%d: %s", fd, strerror(errno));
- /* NOTREACHED */
- }
- }
- if (!try) {
- sv->renamed[fd] = i;
- close(fd);
- }
- INTON;
- } else {
- close(fd);
- }
- if (fd == 0)
- fd0_redirected++;
- if (!try)
- openredirect(n, memory, flags);
- }
- if (memory[1])
- out1 = &memout;
- if (memory[2])
- out2 = &memout;
-}
-
-
-STATIC void
-openredirect(union node *redir, char memory[10], int flags)
-{
- int fd = redir->nfile.fd;
- char *fname;
- int f;
- int oflags = O_WRONLY|O_CREAT|O_TRUNC, eflags;
-
- /*
- * We suppress interrupts so that we won't leave open file
- * descriptors around. This may not be such a good idea because
- * an open of a device or a fifo can block indefinitely.
- */
- INTOFF;
- memory[fd] = 0;
- switch (redir->nfile.type) {
- case NFROM:
- fname = redir->nfile.expfname;
- if (flags & REDIR_VFORK)
- eflags = O_NONBLOCK;
- else
- eflags = 0;
- if ((f = open(fname, O_RDONLY|eflags)) < 0)
- goto eopen;
- if (eflags)
- (void)fcntl(f, F_SETFL, fcntl(f, F_GETFL, 0) & ~eflags);
- break;
- case NFROMTO:
- fname = redir->nfile.expfname;
- if ((f = open(fname, O_RDWR|O_CREAT|O_TRUNC, 0666)) < 0)
- goto ecreate;
- break;
- case NTO:
- if (Cflag)
- oflags |= O_EXCL;
- /* FALLTHROUGH */
- case NCLOBBER:
- fname = redir->nfile.expfname;
- if ((f = open(fname, oflags, 0666)) < 0)
- goto ecreate;
- break;
- case NAPPEND:
- fname = redir->nfile.expfname;
- if ((f = open(fname, O_WRONLY|O_CREAT|O_APPEND, 0666)) < 0)
- goto ecreate;
- break;
- case NTOFD:
- case NFROMFD:
- if (redir->ndup.dupfd >= 0) { /* if not ">&-" */
- if (memory[redir->ndup.dupfd])
- memory[fd] = 1;
- else
- copyfd(redir->ndup.dupfd, fd);
- }
- INTON;
- return;
- case NHERE:
- case NXHERE:
- f = openhere(redir);
- break;
- default:
- abort();
- }
-
- if (f != fd) {
- copyfd(f, fd);
- close(f);
- }
- INTON;
- return;
-ecreate:
- error("cannot create %s: %s", fname, errmsg(errno, E_CREAT));
-eopen:
- error("cannot open %s: %s", fname, errmsg(errno, E_OPEN));
-}
-
-
-/*
- * Handle here documents. Normally we fork off a process to write the
- * data to a pipe. If the document is short, we can stuff the data in
- * the pipe without forking.
- */
-
-STATIC int
-openhere(union node *redir)
-{
- int pip[2];
- int len = 0;
-
- if (pipe(pip) < 0)
- error("Pipe call failed");
- if (redir->type == NHERE) {
- len = strlen(redir->nhere.doc->narg.text);
- if (len <= PIPESIZE) {
- xwrite(pip[1], redir->nhere.doc->narg.text, len);
- goto out;
- }
- }
- if (forkshell((struct job *)NULL, (union node *)NULL, FORK_NOJOB) == 0) {
- close(pip[0]);
- signal(SIGINT, SIG_IGN);
- signal(SIGQUIT, SIG_IGN);
- signal(SIGHUP, SIG_IGN);
-#ifdef SIGTSTP
- signal(SIGTSTP, SIG_IGN);
-#endif
- signal(SIGPIPE, SIG_DFL);
- if (redir->type == NHERE)
- xwrite(pip[1], redir->nhere.doc->narg.text, len);
- else
- expandhere(redir->nhere.doc, pip[1]);
- _exit(0);
- }
-out:
- close(pip[1]);
- return pip[0];
-}
-
-
-
-/*
- * Undo the effects of the last redirection.
- */
-
-void
-popredir(void)
-{
- struct redirtab *rp = redirlist;
- int i;
-
- for (i = 0 ; i < 10 ; i++) {
- if (rp->renamed[i] != EMPTY) {
- if (i == 0)
- fd0_redirected--;
- close(i);
- if (rp->renamed[i] >= 0) {
- copyfd(rp->renamed[i], i);
- close(rp->renamed[i]);
- }
- }
- }
- INTOFF;
- redirlist = rp->next;
- ckfree(rp);
- INTON;
-}
-
-/*
- * Undo all redirections. Called on error or interrupt.
- */
-
-#ifdef mkinit
-
-INCLUDE "redir.h"
-
-RESET {
- while (redirlist)
- popredir();
-}
-
-SHELLPROC {
- clearredir(0);
-}
-
-#endif
-
-/* Return true if fd 0 has already been redirected at least once. */
-int
-fd0_redirected_p () {
- return fd0_redirected != 0;
-}
-
-/*
- * Discard all saved file descriptors.
- */
-
-void
-clearredir(vforked)
- int vforked;
-{
- struct redirtab *rp;
- int i;
-
- for (rp = redirlist ; rp ; rp = rp->next) {
- for (i = 0 ; i < 10 ; i++) {
- if (rp->renamed[i] >= 0) {
- close(rp->renamed[i]);
- }
- if (!vforked)
- rp->renamed[i] = EMPTY;
- }
- }
-}
-
-
-
-/*
- * Copy a file descriptor to be >= to. Returns -1
- * if the source file descriptor is closed, EMPTY if there are no unused
- * file descriptors left.
- */
-
-int
-copyfd(int from, int to)
-{
- int newfd;
-
- newfd = fcntl(from, F_DUPFD, to);
- if (newfd < 0) {
- if (errno == EMFILE)
- return EMPTY;
- else
- error("%d: %s", from, strerror(errno));
- }
- return newfd;
-}
diff --git a/sh/redir.h b/sh/redir.h
deleted file mode 100644
index c9709e9..0000000
--- a/sh/redir.h
+++ /dev/null
@@ -1,48 +0,0 @@
-/* $NetBSD: redir.h,v 1.15 2003/08/07 09:05:37 agc Exp $ */
-
-/*-
- * Copyright (c) 1991, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Kenneth Almquist.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * @(#)redir.h 8.2 (Berkeley) 5/4/95
- */
-
-/* flags passed to redirect */
-#define REDIR_PUSH 01 /* save previous values of file descriptors */
-#define REDIR_BACKQ 02 /* save the command output in memory */
-#define REDIR_VFORK 04 /* running under vfork(2), be careful */
-
-union node;
-void redirect(union node *, int);
-void popredir(void);
-int fd0_redirected_p(void);
-void clearredir(int);
-int copyfd(int, int);
-
diff --git a/sh/sh.1 b/sh/sh.1
deleted file mode 100644
index 3ef55b4..0000000
--- a/sh/sh.1
+++ /dev/null
@@ -1,1928 +0,0 @@
-.\" $NetBSD: sh.1,v 1.78 2004/06/03 19:54:37 hubertf Exp $
-.\" Copyright (c) 1991, 1993
-.\" The Regents of the University of California. All rights reserved.
-.\"
-.\" This code is derived from software contributed to Berkeley by
-.\" Kenneth Almquist.
-.\"
-.\" Redistribution and use in source and binary forms, with or without
-.\" modification, are permitted provided that the following conditions
-.\" are met:
-.\" 1. Redistributions of source code must retain the above copyright
-.\" notice, this list of conditions and the following disclaimer.
-.\" 2. Redistributions in binary form must reproduce the above copyright
-.\" notice, this list of conditions and the following disclaimer in the
-.\" documentation and/or other materials provided with the distribution.
-.\" 3. Neither the name of the University nor the names of its contributors
-.\" may be used to endorse or promote products derived from this software
-.\" without specific prior written permission.
-.\"
-.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
-.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
-.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
-.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
-.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
-.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
-.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
-.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
-.\" SUCH DAMAGE.
-.\"
-.\" @(#)sh.1 8.6 (Berkeley) 5/4/95
-.\"
-.Dd April 17, 2004
-.Os
-.Dt SH 1
-.Sh NAME
-.Nm sh
-.Nd command interpreter (shell)
-.Sh SYNOPSIS
-.Nm
-.Bk -words
-.Op Fl aCefnuvxIimqVEb
-.Op Cm +aCefnuvxIimqVEb
-.Ek
-.Bk -words
-.Op Fl o Ar option_name
-.Op Cm +o Ar option_name
-.Ek
-.Bk -words
-.Op Ar command_file Oo Ar argument ... Oc
-.Ek
-.Nm
-.Fl c
-.Bk -words
-.Op Fl aCefnuvxIimqVEb
-.Op Cm +aCefnuvxIimqVEb
-.Ek
-.Bk -words
-.Op Fl o Ar option_name
-.Op Cm +o Ar option_name
-.Ek
-.Bk -words
-.Ar command_string
-.Op Ar command_name Oo Ar argument ... Oc
-.Ek
-.Nm
-.Fl s
-.Bk -words
-.Op Fl aCefnuvxIimqVEb
-.Op Cm +aCefnuvxIimqVEb
-.Ek
-.Bk -words
-.Op Fl o Ar option_name
-.Op Cm +o Ar option_name
-.Ek
-.Bk -words
-.Op Ar argument ...
-.Ek
-.Sh DESCRIPTION
-.Nm
-is the standard command interpreter for the system.
-The current version of
-.Nm
-is in the process of being changed to conform with the
-.Tn POSIX
-1003.2 and 1003.2a specifications for the shell.
-This version has many
-features which make it appear similar in some respects to the Korn shell,
-but it is not a Korn shell clone (see
-.Xr ksh 1 ) .
-Only features designated by
-.Tn POSIX ,
-plus a few Berkeley extensions, are being incorporated into this shell.
-.\" We expect
-.\" .Tn POSIX
-.\" conformance by the time 4.4 BSD is released.
-This man page is not intended
-to be a tutorial or a complete specification of the shell.
-.Ss Overview
-The shell is a command that reads lines from either a file or the
-terminal, interprets them, and generally executes other commands.
-It is the program that is running when a user logs into the system
-(although a user can select a different shell with the
-.Xr chsh 1
-command).
-The shell implements a language that has flow control
-constructs, a macro facility that provides a variety of features in
-addition to data storage, along with built in history and line editing
-capabilities.
-It incorporates many features to aid interactive use and
-has the advantage that the interpretative language is common to both
-interactive and non-interactive use (shell scripts).
-That is, commands
-can be typed directly to the running shell or can be put into a file and
-the file can be executed directly by the shell.
-.Ss Invocation
-If no args are present and if the standard input of the shell
-is connected to a terminal (or if the
-.Fl i
-flag is set),
-and the
-.Fl c
-option is not present, the shell is considered an interactive shell.
-An interactive shell generally prompts before each command and handles
-programming and command errors differently (as described below).
-When first starting,
-the shell inspects argument 0, and if it begins with a dash
-.Sq - ,
-the shell is also considered
-a login shell.
-This is normally done automatically by the system
-when the user first logs in.
-A login shell first reads commands
-from the files
-.Pa /etc/profile
-and
-.Pa .profile
-if they exist.
-If the environment variable
-.Ev ENV
-is set on entry to a shell, or is set in the
-.Pa .profile
-of a login shell, the shell next reads
-commands from the file named in
-.Ev ENV .
-Therefore, a user should place commands that are to be executed only at
-login time in the
-.Pa .profile
-file, and commands that are executed for every shell inside the
-.Ev ENV
-file.
-To set the
-.Ev ENV
-variable to some file, place the following line in your
-.Pa .profile
-of your home directory
-.Pp
-.Dl ENV=$HOME/.shinit; export ENV
-.Pp
-substituting for
-.Dq .shinit
-any filename you wish.
-Since the
-.Ev ENV
-file is read for every invocation of the shell, including shell scripts
-and non-interactive shells, the following paradigm is useful for
-restricting commands in the
-.Ev ENV
-file to interactive invocations.
-Place commands within the
-.Dq case
-and
-.Dq esac
-below (these commands are described later):
-.Pp
-.Bl -item -compact -offset indent
-.It
-.Li case $- in *i*)
-.Bl -item -compact -offset indent
-.It
-.Li # commands for interactive use only
-.It
-.Li ...
-.El
-.It
-.Li esac
-.El
-.Pp
-If command line arguments besides the options have been specified, then
-the shell treats the first argument as the name of a file from which to
-read commands (a shell script), and the remaining arguments are set as the
-positional parameters of the shell ($1, $2, etc).
-Otherwise, the shell
-reads commands from its standard input.
-.Ss Argument List Processing
-All of the single letter options have a corresponding name that can be
-used as an argument to the
-.Fl o
-option.
-The set
-.Fl o
-name is provided next to the single letter option in
-the description below.
-Specifying a dash
-.Dq -
-turns the option on, while using a plus
-.Dq +
-disables the option.
-The following options can be set from the command line or
-with the
-.Ic set
-builtin (described later).
-.Bl -tag -width aaaallexportfoo -offset indent
-.It Fl a Em allexport
-Export all variables assigned to.
-.It Fl c
-Read commands from the
-.Ar command_string
-operand instead of from the standard input.
-Special parameter 0 will be set from the
-.Ar command_name
-operand and the positional parameters ($1, $2, etc.)
-set from the remaining argument operands.
-.It Fl C Em noclobber
-Don't overwrite existing files with
-.Dq \*[Gt] .
-.It Fl e Em errexit
-If not interactive, exit immediately if any untested command fails.
-The exit status of a command is considered to be
-explicitly tested if the command is used to control an
-.Ic if ,
-.Ic elif ,
-.Ic while ,
-or
-.Ic until ;
-or if the command is the left hand operand of an
-.Dq \*[Am]\*[Am]
-or
-.Dq ||
-operator.
-.It Fl f Em noglob
-Disable pathname expansion.
-.It Fl n Em noexec
-If not interactive, read commands but do not execute them.
-This is useful for checking the syntax of shell scripts.
-.It Fl u Em nounset
-Write a message to standard error when attempting to expand a variable
-that is not set, and if the shell is not interactive, exit immediately.
-.It Fl v Em verbose
-The shell writes its input to standard error as it is read.
-Useful for debugging.
-.It Fl x Em xtrace
-Write each command to standard error (preceded by a
-.Sq +\ )
-before it is executed.
-Useful for debugging.
-.It Fl q Em quietprofile
-If the
-.Fl v
-or
-.Fl x
-options have been set, do not apply them when reading
-initialization files, these being
-.Pa /etc/profile ,
-.Pa .profile ,
-and the file specified by the
-.Ev ENV
-environment variable.
-.It Fl I Em ignoreeof
-Ignore EOF's from input when interactive.
-.It Fl i Em interactive
-Force the shell to behave interactively.
-.It Fl m Em monitor
-Turn on job control (set automatically when interactive).
-.It Fl s Em stdin
-Read commands from standard input (set automatically if no file arguments
-are present).
-This option has no effect when set after the shell has
-already started running (i.e. with
-.Ic set ) .
-.It Fl V Em vi
-Enable the built-in
-.Xr vi 1
-command line editor (disables
-.Fl E
-if it has been set).
-(See the
-.Sx Command Line Editing
-section below.)
-.It Fl E Em emacs
-Enable the built-in emacs style
-command line editor (disables
-.Fl V
-if it has been set).
-(See the
-.Sx Command Line Editing
-section below.)
-.It Fl b Em notify
-Enable asynchronous notification of background job completion.
-(UNIMPLEMENTED for 4.4alpha)
-.It "\ \ " Em cdprint
-Make an interactive shell always print the new directory name when
-changed by the
-.Ic cd
-command.
-.El
-.Ss Lexical Structure
-The shell reads input in terms of lines from a file and breaks it up into
-words at whitespace (blanks and tabs), and at certain sequences of
-characters that are special to the shell called
-.Dq operators .
-There are two types of operators: control operators and redirection
-operators (their meaning is discussed later).
-Following is a list of operators:
-.Bl -ohang -offset indent
-.It "Control operators:"
-.Dl \*[Am] \*[Am]\*[Am] \&( \&) \&; ;; | || \*[Lt]newline\*[Gt]
-.It "Redirection operators:"
-.Dl \*[Lt] \*[Gt] \*[Gt]| \*[Lt]\*[Lt] \*[Gt]\*[Gt] \*[Lt]\*[Am] \*[Gt]\*[Am] \*[Lt]\*[Lt]- \*[Lt]\*[Gt]
-.El
-.Ss Quoting
-Quoting is used to remove the special meaning of certain characters or
-words to the shell, such as operators, whitespace, or keywords.
-There are three types of quoting: matched single quotes,
-matched double quotes, and backslash.
-.Ss Backslash
-A backslash preserves the literal meaning of the following
-character, with the exception of
-.Aq newline .
-A backslash preceding a
-.Aq newline
-is treated as a line continuation.
-.Ss Single Quotes
-Enclosing characters in single quotes preserves the literal meaning of all
-the characters (except single quotes, making it impossible to put
-single-quotes in a single-quoted string).
-.Ss Double Quotes
-Enclosing characters within double quotes preserves the literal
-meaning of all characters except dollarsign
-.Pq $ ,
-backquote
-.Pq ` ,
-and backslash
-.Pq \e .
-The backslash inside double quotes is historically weird, and serves to
-quote only the following characters:
-.Dl $ ` \*q \e \*[Lt]newline\*[Gt] .
-Otherwise it remains literal.
-.Ss Reserved Words
-Reserved words are words that have special meaning to the
-shell and are recognized at the beginning of a line and
-after a control operator.
-The following are reserved words:
-.Bl -column while while while while while -offset indent
-.It ! Ta elif Ta fi Ta while Ta case
-.It else Ta for Ta then Ta { Ta }
-.It do Ta done Ta until Ta if Ta esac
-.El
-.Pp
-Their meaning is discussed later.
-.Ss Aliases
-An alias is a name and corresponding value set using the
-.Ic alias
-builtin command.
-Whenever a reserved word may occur (see above),
-and after checking for reserved words, the shell
-checks the word to see if it matches an alias.
-If it does, it replaces it in the input stream with its value.
-For example, if there is an alias called
-.Dq lf
-with the value
-.Dq "ls -F" ,
-then the input:
-.Pp
-.Dl lf foobar Aq return
-.Pp
-would become
-.Pp
-.Dl ls -F foobar Aq return
-.Pp
-Aliases provide a convenient way for naive users to create shorthands for
-commands without having to learn how to create functions with arguments.
-They can also be used to create lexically obscure code.
-This use is discouraged.
-.Ss Commands
-The shell interprets the words it reads according to a language, the
-specification of which is outside the scope of this man page (refer to the
-BNF in the
-.Tn POSIX
-1003.2 document).
-Essentially though, a line is read and if the first
-word of the line (or after a control operator) is not a reserved word,
-then the shell has recognized a simple command.
-Otherwise, a complex
-command or some other special construct may have been recognized.
-.Ss Simple Commands
-If a simple command has been recognized, the shell performs
-the following actions:
-.Bl -enum -offset indent
-.It
-Leading words of the form
-.Dq name=value
-are stripped off and assigned to the environment of the simple command.
-Redirection operators and their arguments (as described below) are
-stripped off and saved for processing.
-.It
-The remaining words are expanded as described in
-the section called
-.Dq Expansions ,
-and the first remaining word is considered the command name and the
-command is located.
-The remaining words are considered the arguments of the command.
-If no command name resulted, then the
-.Dq name=value
-variable assignments recognized in item 1 affect the current shell.
-.It
-Redirections are performed as described in the next section.
-.El
-.Ss Redirections
-Redirections are used to change where a command reads its input or sends
-its output.
-In general, redirections open, close, or duplicate an
-existing reference to a file.
-The overall format used for redirection is:
-.Pp
-.Dl [n] Va redir-op Ar file
-.Pp
-where
-.Va redir-op
-is one of the redirection operators mentioned previously.
-Following is a list of the possible redirections.
-The
-.Bq n
-is an optional number, as in
-.Sq 3
-(not
-.Sq Bq 3 ) ,
-that refers to a file descriptor.
-.Bl -tag -width aaabsfiles -offset indent
-.It [n] Ns \*[Gt] file
-Redirect standard output (or n) to file.
-.It [n] Ns \*[Gt]| file
-Same, but override the
-.Fl C
-option.
-.It [n] Ns \*[Gt]\*[Gt] file
-Append standard output (or n) to file.
-.It [n] Ns \*[Lt] file
-Redirect standard input (or n) from file.
-.It [n1] Ns \*[Lt]\*[Am] Ns n2
-Duplicate standard input (or n1) from file descriptor n2.
-.It [n] Ns \*[Lt]\*[Am]-
-Close standard input (or n).
-.It [n1] Ns \*[Gt]\*[Am] Ns n2
-Duplicate standard output (or n1) to n2.
-.It [n] Ns \*[Gt]\*[Am]-
-Close standard output (or n).
-.It [n] Ns \*[Lt]\*[Gt] file
-Open file for reading and writing on standard input (or n).
-.El
-.Pp
-The following redirection is often called a
-.Dq here-document .
-.Bl -item -offset indent
-.It
-.Li [n]\*[Lt]\*[Lt] delimiter
-.Dl here-doc-text ...
-.Li delimiter
-.El
-.Pp
-All the text on successive lines up to the delimiter is saved away and
-made available to the command on standard input, or file descriptor n if
-it is specified.
-If the delimiter as specified on the initial line is
-quoted, then the here-doc-text is treated literally, otherwise the text is
-subjected to parameter expansion, command substitution, and arithmetic
-expansion (as described in the section on
-.Dq Expansions ) .
-If the operator is
-.Dq \*[Lt]\*[Lt]-
-instead of
-.Dq \*[Lt]\*[Lt] ,
-then leading tabs in the here-doc-text are stripped.
-.Ss Search and Execution
-There are three types of commands: shell functions, builtin commands, and
-normal programs -- and the command is searched for (by name) in that order.
-They each are executed in a different way.
-.Pp
-When a shell function is executed, all of the shell positional parameters
-(except $0, which remains unchanged) are set to the arguments of the shell
-function.
-The variables which are explicitly placed in the environment of
-the command (by placing assignments to them before the function name) are
-made local to the function and are set to the values given.
-Then the command given in the function definition is executed.
-The positional parameters are restored to their original values
-when the command completes.
-This all occurs within the current shell.
-.Pp
-Shell builtins are executed internally to the shell, without spawning a
-new process.
-.Pp
-Otherwise, if the command name doesn't match a function or builtin, the
-command is searched for as a normal program in the file system (as
-described in the next section).
-When a normal program is executed, the shell runs the program,
-passing the arguments and the environment to the program.
-If the program is not a normal executable file (i.e., if it does
-not begin with the "magic number" whose
-.Tn ASCII
-representation is "#!", so
-.Xr execve 2
-returns
-.Er ENOEXEC
-then) the shell will interpret the program in a subshell.
-The child shell will reinitialize itself in this case,
-so that the effect will be as if a
-new shell had been invoked to handle the ad-hoc shell script, except that
-the location of hashed commands located in the parent shell will be
-remembered by the child.
-.Pp
-Note that previous versions of this document and the source code itself
-misleadingly and sporadically refer to a shell script without a magic
-number as a "shell procedure".
-.Ss Path Search
-When locating a command, the shell first looks to see if it has a shell
-function by that name.
-Then it looks for a builtin command by that name.
-If a builtin command is not found, one of two things happen:
-.Bl -enum
-.It
-Command names containing a slash are simply executed without performing
-any searches.
-.It
-The shell searches each entry in
-.Ev PATH
-in turn for the command.
-The value of the
-.Ev PATH
-variable should be a series of entries separated by colons.
-Each entry consists of a directory name.
-The current directory may be indicated
-implicitly by an empty directory name, or explicitly by a single period.
-.El
-.Ss Command Exit Status
-Each command has an exit status that can influence the behavior
-of other shell commands.
-The paradigm is that a command exits
-with zero for normal or success, and non-zero for failure,
-error, or a false indication.
-The man page for each command
-should indicate the various exit codes and what they mean.
-Additionally, the builtin commands return exit codes, as does
-an executed shell function.
-.Pp
-If a command consists entirely of variable assignments then the
-exit status of the command is that of the last command substitution
-if any, otherwise 0.
-.Ss Complex Commands
-Complex commands are combinations of simple commands with control
-operators or reserved words, together creating a larger complex command.
-More generally, a command is one of the following:
-.Bl -bullet
-.It
-simple command
-.It
-pipeline
-.It
-list or compound-list
-.It
-compound command
-.It
-function definition
-.El
-.Pp
-Unless otherwise stated, the exit status of a command is that of the last
-simple command executed by the command.
-.Ss Pipelines
-A pipeline is a sequence of one or more commands separated
-by the control operator |.
-The standard output of all but
-the last command is connected to the standard input
-of the next command.
-The standard output of the last
-command is inherited from the shell, as usual.
-.Pp
-The format for a pipeline is:
-.Pp
-.Dl [!] command1 [ | command2 ...]
-.Pp
-The standard output of command1 is connected to the standard input of
-command2.
-The standard input, standard output, or both of a command is
-considered to be assigned by the pipeline before any redirection specified
-by redirection operators that are part of the command.
-.Pp
-If the pipeline is not in the background (discussed later), the shell
-waits for all commands to complete.
-.Pp
-If the reserved word ! does not precede the pipeline, the exit status is
-the exit status of the last command specified in the pipeline.
-Otherwise, the exit status is the logical NOT of the exit status of the
-last command.
-That is, if the last command returns zero, the exit status
-is 1; if the last command returns greater than zero, the exit status is
-zero.
-.Pp
-Because pipeline assignment of standard input or standard output or both
-takes place before redirection, it can be modified by redirection.
-For example:
-.Pp
-.Dl $ command1 2\*[Gt]\*[Am]1 | command2
-.Pp
-sends both the standard output and standard error of command1
-to the standard input of command2.
-.Pp
-A ; or
-.Aq newline
-terminator causes the preceding AND-OR-list (described
-next) to be executed sequentially; a \*[Am] causes asynchronous execution of
-the preceding AND-OR-list.
-.Pp
-Note that unlike some other shells, each process in the pipeline is a
-child of the invoking shell (unless it is a shell builtin, in which case
-it executes in the current shell -- but any effect it has on the
-environment is wiped).
-.Ss Background Commands -- \*[Am]
-If a command is terminated by the control operator ampersand (\*[Am]), the
-shell executes the command asynchronously -- that is, the shell does not
-wait for the command to finish before executing the next command.
-.Pp
-The format for running a command in background is:
-.Pp
-.Dl command1 \*[Am] [command2 \*[Am] ...]
-.Pp
-If the shell is not interactive, the standard input of an asynchronous
-command is set to
-.Pa /dev/null .
-.Ss Lists -- Generally Speaking
-A list is a sequence of zero or more commands separated by newlines,
-semicolons, or ampersands, and optionally terminated by one of these three
-characters.
-The commands in a list are executed in the order they are written.
-If command is followed by an ampersand, the shell starts the
-command and immediately proceed onto the next command; otherwise it waits
-for the command to terminate before proceeding to the next one.
-.Ss Short-Circuit List Operators
-.Dq \*[Am]\*[Am]
-and
-.Dq ||
-are AND-OR list operators.
-.Dq \*[Am]\*[Am]
-executes the first command, and then executes the second command if and only
-if the exit status of the first command is zero.
-.Dq ||
-is similar, but executes the second command if and only if the exit status
-of the first command is nonzero.
-.Dq \*[Am]\*[Am]
-and
-.Dq ||
-both have the same priority.
-Note that these operators are left-associative, so
-.Dq true || echo bar && echo baz
-writes
-.Dq baz
-and nothing else.
-This is not the way it works in C.
-.Ss Flow-Control Constructs -- if, while, for, case
-The syntax of the if command is
-.Bd -literal -offset indent
-if list
-then list
-[ elif list
-then list ] ...
-[ else list ]
-fi
-.Ed
-.Pp
-The syntax of the while command is
-.Bd -literal -offset indent
-while list
-do list
-done
-.Ed
-.Pp
-The two lists are executed repeatedly while the exit status of the
-first list is zero.
-The until command is similar, but has the word
-until in place of while, which causes it to
-repeat until the exit status of the first list is zero.
-.Pp
-The syntax of the for command is
-.Bd -literal -offset indent
-for variable in word ...
-do list
-done
-.Ed
-.Pp
-The words are expanded, and then the list is executed repeatedly with the
-variable set to each word in turn.
-do and done may be replaced with
-.Dq {
-and
-.Dq } .
-.Pp
-The syntax of the break and continue command is
-.Bd -literal -offset indent
-break [ num ]
-continue [ num ]
-.Ed
-.Pp
-Break terminates the num innermost for or while loops.
-Continue continues with the next iteration of the innermost loop.
-These are implemented as builtin commands.
-.Pp
-The syntax of the case command is
-.Bd -literal -offset indent
-case word in
-pattern) list ;;
-\&...
-esac
-.Ed
-.Pp
-The pattern can actually be one or more patterns (see
-.Sx Shell Patterns
-described later), separated by
-.Dq \*(Ba
-characters.
-.Ss Grouping Commands Together
-Commands may be grouped by writing either
-.Pp
-.Dl (list)
-.Pp
-or
-.Pp
-.Dl { list; }
-.Pp
-The first of these executes the commands in a subshell.
-Builtin commands grouped into a (list) will not affect the current shell.
-The second form does not fork another shell so is slightly more efficient.
-Grouping commands together this way allows you to redirect
-their output as though they were one program:
-.Pp
-.Bd -literal -offset indent
-{ echo -n \*q hello \*q ; echo \*q world" ; } \*[Gt] greeting
-.Ed
-.Pp
-Note that
-.Dq }
-must follow a control operator (here,
-.Dq \&; )
-so that it is recognized as a reserved word and not as another command argument.
-.Ss Functions
-The syntax of a function definition is
-.Pp
-.Dl name ( ) command
-.Pp
-A function definition is an executable statement; when executed it
-installs a function named name and returns an exit status of zero.
-The command is normally a list enclosed between
-.Dq {
-and
-.Dq } .
-.Pp
-Variables may be declared to be local to a function by using a local
-command.
-This should appear as the first statement of a function, and the syntax is
-.Pp
-.Dl local [ variable | - ] ...
-.Pp
-Local is implemented as a builtin command.
-.Pp
-When a variable is made local, it inherits the initial value and exported
-and readonly flags from the variable with the same name in the surrounding
-scope, if there is one.
-Otherwise, the variable is initially unset.
-The shell uses dynamic scoping, so that if you make the variable x local to
-function f, which then calls function g, references to the variable x made
-inside g will refer to the variable x declared inside f, not to the global
-variable named x.
-.Pp
-The only special parameter that can be made local is
-.Dq - .
-Making
-.Dq -
-local any shell options that are changed via the set command inside the
-function to be restored to their original values when the function
-returns.
-.Pp
-The syntax of the return command is
-.Pp
-.Dl return [ exitstatus ]
-.Pp
-It terminates the currently executing function.
-Return is implemented as a builtin command.
-.Ss Variables and Parameters
-The shell maintains a set of parameters.
-A parameter denoted by a name is called a variable.
-When starting up, the shell turns all the environment
-variables into shell variables.
-New variables can be set using the form
-.Pp
-.Dl name=value
-.Pp
-Variables set by the user must have a name consisting solely of
-alphabetics, numerics, and underscores - the first of which must not be
-numeric.
-A parameter can also be denoted by a number or a special
-character as explained below.
-.Ss Positional Parameters
-A positional parameter is a parameter denoted by a number (n \*[Gt] 0).
-The shell sets these initially to the values of its command line arguments
-that follow the name of the shell script.
-The
-.Ic set
-builtin can also be used to set or reset them.
-.Ss Special Parameters
-A special parameter is a parameter denoted by one of the following special
-characters.
-The value of the parameter is listed next to its character.
-.Bl -tag -width thinhyphena
-.It *
-Expands to the positional parameters, starting from one.
-When the
-expansion occurs within a double-quoted string it expands to a single
-field with the value of each parameter separated by the first character of
-the
-.Ev IFS
-variable, or by a
-.Aq space
-if
-.Ev IFS
-is unset.
-.It @
-Expands to the positional parameters, starting from one.
-When the expansion occurs within double-quotes, each positional
-parameter expands as a separate argument.
-If there are no positional parameters, the
-expansion of @ generates zero arguments, even when @ is
-double-quoted.
-What this basically means, for example, is
-if $1 is
-.Dq abc
-and $2 is
-.Dq def ghi ,
-then
-.Qq $@
-expands to
-the two arguments:
-.Pp
-.Sm off
-.Dl \*q abc \*q \ \*q def\ ghi \*q
-.Sm on
-.It #
-Expands to the number of positional parameters.
-.It \&?
-Expands to the exit status of the most recent pipeline.
-.It - (Hyphen.)
-Expands to the current option flags (the single-letter
-option names concatenated into a string) as specified on
-invocation, by the set builtin command, or implicitly
-by the shell.
-.It $
-Expands to the process ID of the invoked shell.
-A subshell retains the same value of $ as its parent.
-.It \&!
-Expands to the process ID of the most recent background
-command executed from the current shell.
-For a pipeline, the process ID is that of the last command in the pipeline.
-.It 0 (Zero.)
-Expands to the name of the shell or shell script.
-.El
-.Ss Word Expansions
-This clause describes the various expansions that are performed on words.
-Not all expansions are performed on every word, as explained later.
-.Pp
-Tilde expansions, parameter expansions, command substitutions, arithmetic
-expansions, and quote removals that occur within a single word expand to a
-single field.
-It is only field splitting or pathname expansion that can
-create multiple fields from a single word.
-The single exception to this
-rule is the expansion of the special parameter @ within double-quotes, as
-was described above.
-.Pp
-The order of word expansion is:
-.Bl -enum
-.It
-Tilde Expansion, Parameter Expansion, Command Substitution,
-Arithmetic Expansion (these all occur at the same time).
-.It
-Field Splitting is performed on fields
-generated by step (1) unless the
-.Ev IFS
-variable is null.
-.It
-Pathname Expansion (unless set
-.Fl f
-is in effect).
-.It
-Quote Removal.
-.El
-.Pp
-The $ character is used to introduce parameter expansion, command
-substitution, or arithmetic evaluation.
-.Ss Tilde Expansion (substituting a user's home directory)
-A word beginning with an unquoted tilde character (~) is
-subjected to tilde expansion.
-All the characters up to
-a slash (/) or the end of the word are treated as a username
-and are replaced with the user's home directory.
-If the username is missing (as in
-.Pa ~/foobar ) ,
-the tilde is replaced with the value of the
-.Va HOME
-variable (the current user's home directory).
-.Ss Parameter Expansion
-The format for parameter expansion is as follows:
-.Pp
-.Dl ${expression}
-.Pp
-where expression consists of all characters until the matching
-.Dq } .
-Any
-.Dq }
-escaped by a backslash or within a quoted string, and characters in
-embedded arithmetic expansions, command substitutions, and variable
-expansions, are not examined in determining the matching
-.Dq } .
-.Pp
-The simplest form for parameter expansion is:
-.Pp
-.Dl ${parameter}
-.Pp
-The value, if any, of parameter is substituted.
-.Pp
-The parameter name or symbol can be enclosed in braces, which are
-optional except for positional parameters with more than one digit or
-when parameter is followed by a character that could be interpreted as
-part of the name.
-If a parameter expansion occurs inside double-quotes:
-.Bl -enum
-.It
-Pathname expansion is not performed on the results of the expansion.
-.It
-Field splitting is not performed on the results of the
-expansion, with the exception of @.
-.El
-.Pp
-In addition, a parameter expansion can be modified by using one of the
-following formats.
-.Bl -tag -width aaparameterwordaaaaa
-.It ${parameter:-word}
-Use Default Values.
-If parameter is unset or null, the expansion of word
-is substituted; otherwise, the value of parameter is substituted.
-.It ${parameter:=word}
-Assign Default Values.
-If parameter is unset or null, the expansion of
-word is assigned to parameter.
-In all cases, the final value of parameter is substituted.
-Only variables, not positional parameters or special
-parameters, can be assigned in this way.
-.It ${parameter:?[word]}
-Indicate Error if Null or Unset.
-If parameter is unset or null, the
-expansion of word (or a message indicating it is unset if word is omitted)
-is written to standard error and the shell exits with a nonzero exit status.
-Otherwise, the value of parameter is substituted.
-An interactive shell need not exit.
-.It ${parameter:+word}
-Use Alternative Value.
-If parameter is unset or null, null is
-substituted; otherwise, the expansion of word is substituted.
-.El
-.Pp
-In the parameter expansions shown previously, use of the colon in the
-format results in a test for a parameter that is unset or null; omission
-of the colon results in a test for a parameter that is only unset.
-.Bl -tag -width aaparameterwordaaaaa
-.It ${#parameter}
-String Length.
-The length in characters of the value of parameter.
-.El
-.Pp
-The following four varieties of parameter expansion provide for substring
-processing.
-In each case, pattern matching notation (see
-.Sx Shell Patterns ) ,
-rather than regular expression notation, is used to evaluate the patterns.
-If parameter is * or @, the result of the expansion is unspecified.
-Enclosing the full parameter expansion string in double-quotes does not
-cause the following four varieties of pattern characters to be quoted,
-whereas quoting characters within the braces has this effect.
-.Bl -tag -width aaparameterwordaaaaa
-.It ${parameter%word}
-Remove Smallest Suffix Pattern.
-The word is expanded to produce a pattern.
-The parameter expansion then results in parameter, with the
-smallest portion of the suffix matched by the pattern deleted.
-.It ${parameter%%word}
-Remove Largest Suffix Pattern.
-The word is expanded to produce a pattern.
-The parameter expansion then results in parameter, with the largest
-portion of the suffix matched by the pattern deleted.
-.It ${parameter#word}
-Remove Smallest Prefix Pattern.
-The word is expanded to produce a pattern.
-The parameter expansion then results in parameter, with the
-smallest portion of the prefix matched by the pattern deleted.
-.It ${parameter##word}
-Remove Largest Prefix Pattern.
-The word is expanded to produce a pattern.
-The parameter expansion then results in parameter, with the largest
-portion of the prefix matched by the pattern deleted.
-.El
-.Ss Command Substitution
-Command substitution allows the output of a command to be substituted in
-place of the command name itself.
-Command substitution occurs when the command is enclosed as follows:
-.Pp
-.Dl $(command)
-.Pp
-or
-.Po
-.Dq backquoted
-version
-.Pc :
-.Pp
-.Dl `command`
-.Pp
-The shell expands the command substitution by executing command in a
-subshell environment and replacing the command substitution with the
-standard output of the command, removing sequences of one or more
-.Ao newline Ac Ns s
-at the end of the substitution.
-(Embedded
-.Ao newline Ac Ns s
-before
-the end of the output are not removed; however, during field splitting,
-they may be translated into
-.Ao space Ac Ns s ,
-depending on the value of
-.Ev IFS
-and quoting that is in effect.)
-.Ss Arithmetic Expansion
-Arithmetic expansion provides a mechanism for evaluating an arithmetic
-expression and substituting its value.
-The format for arithmetic expansion is as follows:
-.Pp
-.Dl $((expression))
-.Pp
-The expression is treated as if it were in double-quotes, except
-that a double-quote inside the expression is not treated specially.
-The shell expands all tokens in the expression for parameter expansion,
-command substitution, and quote removal.
-.Pp
-Next, the shell treats this as an arithmetic expression and
-substitutes the value of the expression.
-.Ss White Space Splitting (Field Splitting)
-After parameter expansion, command substitution, and
-arithmetic expansion the shell scans the results of
-expansions and substitutions that did not occur in double-quotes for
-field splitting and multiple fields can result.
-.Pp
-The shell treats each character of the
-.Ev IFS
-as a delimiter and use the delimiters to split the results of parameter
-expansion and command substitution into fields.
-.Ss Pathname Expansion (File Name Generation)
-Unless the
-.Fl f
-flag is set, file name generation is performed after word splitting is
-complete.
-Each word is viewed as a series of patterns, separated by slashes.
-The process of expansion replaces the word with the names of all
-existing files whose names can be formed by replacing each pattern with a
-string that matches the specified pattern.
-There are two restrictions on
-this: first, a pattern cannot match a string containing a slash, and
-second, a pattern cannot match a string starting with a period unless the
-first character of the pattern is a period.
-The next section describes the
-patterns used for both Pathname Expansion and the
-.Ic case
-command.
-.Ss Shell Patterns
-A pattern consists of normal characters, which match themselves,
-and meta-characters.
-The meta-characters are
-.Dq \&! ,
-.Dq * ,
-.Dq \&? ,
-and
-.Dq \&[ .
-These characters lose their special meanings if they are quoted.
-When command or variable substitution is performed
-and the dollar sign or back quotes are not double quoted,
-the value of the variable or the output of
-the command is scanned for these characters and they are turned into
-meta-characters.
-.Pp
-An asterisk
-.Pq Dq *
-matches any string of characters.
-A question mark matches any single character.
-A left bracket
-.Pq Dq \&[
-introduces a character class.
-The end of the character class is indicated by a
-.Pq Dq \&] ;
-if the
-.Dq \&]
-is missing then the
-.Dq \&[
-matches a
-.Dq \&[
-rather than introducing a character class.
-A character class matches any of the characters between the square brackets.
-A range of characters may be specified using a minus sign.
-The character class may be complemented
-by making an exclamation point the first character of the character class.
-.Pp
-To include a
-.Dq \&]
-in a character class, make it the first character listed (after the
-.Dq \&! ,
-if any).
-To include a minus sign, make it the first or last character listed.
-.Ss Builtins
-This section lists the builtin commands which are builtin because they
-need to perform some operation that can't be performed by a separate
-process.
-In addition to these, there are several other commands that may
-be builtin for efficiency (e.g.
-.Xr printf 1 ,
-.Xr echo 1 ,
-.Xr test 1 ,
-etc).
-.Bl -tag -width 5n
-.It :
-A null command that returns a 0 (true) exit value.
-.It \&. file
-The commands in the specified file are read and executed by the shell.
-.It alias Op Ar name Ns Op Ar "=string ..."
-If
-.Ar name=string
-is specified, the shell defines the alias
-.Ar name
-with value
-.Ar string .
-If just
-.Ar name
-is specified, the value of the alias
-.Ar name
-is printed.
-With no arguments, the
-.Ic alias
-builtin prints the
-names and values of all defined aliases (see
-.Ic unalias ) .
-.It bg [ Ar job ] ...
-Continue the specified jobs (or the current job if no
-jobs are given) in the background.
-.It Xo command
-.Op Fl p
-.Op Fl v
-.Op Fl V
-.Ar command
-.Op Ar arg ...
-.Xc
-Execute the specified command but ignore shell functions when searching
-for it.
-(This is useful when you
-have a shell function with the same name as a builtin command.)
-.Bl -tag -width 5n
-.It Fl p
-search for command using a
-.Ev PATH
-that guarantees to find all the standard utilities.
-.It Fl V
-Do not execute the command but
-search for the command and print the resolution of the
-command search.
-This is the same as the type builtin.
-.It Fl v
-Do not execute the command but
-search for the command and print the absolute pathname
-of utilities, the name for builtins or the expansion of aliases.
-.El
-.It cd Op Ar directory Op Ar replace
-Switch to the specified directory (default
-.Ev $HOME ) .
-If
-.Ar replace
-is specified, then the new directory name is generated by replacing
-the first occurrence of
-.Ar directory
-in the current directory name with
-.Ar replace .
-Otherwise if an entry for
-.Ev CDPATH
-appears in the environment of the
-.Ic cd
-command or the shell variable
-.Ev CDPATH
-is set and the directory name does not begin with a slash, then the
-directories listed in
-.Ev CDPATH
-will be searched for the specified directory.
-The format of
-.Ev CDPATH
-is the same as that of
-.Ev PATH .
-In an interactive shell, the
-.Ic cd
-command will print out the name of the
-directory that it actually switched to if this is different from the name
-that the user gave.
-These may be different either because the
-.Ev CDPATH
-mechanism was used or because a symbolic link was crossed.
-.It eval Ar string ...
-Concatenate all the arguments with spaces.
-Then re-parse and execute the command.
-.It exec Op Ar command arg ...
-Unless command is omitted, the shell process is replaced with the
-specified program (which must be a real program, not a shell builtin or
-function).
-Any redirections on the
-.Ic exec
-command are marked as permanent, so that they are not undone when the
-.Ic exec
-command finishes.
-.It exit Op Ar exitstatus
-Terminate the shell process.
-If
-.Ar exitstatus
-is given it is used as the exit status of the shell; otherwise the
-exit status of the preceding command is used.
-.It export Ar name ...
-.It export Fl p
-The specified names are exported so that they will appear in the
-environment of subsequent commands.
-The only way to un-export a variable is to unset it.
-The shell allows the value of a variable to be set at the
-same time it is exported by writing
-.Pp
-.Dl export name=value
-.Pp
-With no arguments the export command lists the names of all exported variables.
-With the
-.Fl p
-option specified the output will be formatted suitably for non-interactive use.
-.It Xo fc Op Fl e Ar editor
-.Op Ar first Op Ar last
-.Xc
-.It Xo fc Fl l
-.Op Fl nr
-.Op Ar first Op Ar last
-.Xc
-.It Xo fc Fl s Op Ar old=new
-.Op Ar first
-.Xc
-The
-.Ic fc
-builtin lists, or edits and re-executes, commands previously entered
-to an interactive shell.
-.Bl -tag -width 5n
-.It Fl e No editor
-Use the editor named by editor to edit the commands.
-The editor string is a command name, subject to search via the
-.Ev PATH
-variable.
-The value in the
-.Ev FCEDIT
-variable is used as a default when
-.Fl e
-is not specified.
-If
-.Ev FCEDIT
-is null or unset, the value of the
-.Ev EDITOR
-variable is used.
-If
-.Ev EDITOR
-is null or unset,
-.Xr ed 1
-is used as the editor.
-.It Fl l No (ell)
-List the commands rather than invoking an editor on them.
-The commands are written in the sequence indicated by
-the first and last operands, as affected by
-.Fl r ,
-with each command preceded by the command number.
-.It Fl n
-Suppress command numbers when listing with -l.
-.It Fl r
-Reverse the order of the commands listed (with
-.Fl l )
-or edited (with neither
-.Fl l
-nor
-.Fl s ) .
-.It Fl s
-Re-execute the command without invoking an editor.
-.It first
-.It last
-Select the commands to list or edit.
-The number of previous commands that
-can be accessed are determined by the value of the
-.Ev HISTSIZE
-variable.
-The value of first or last or both are one of the following:
-.Bl -tag -width 5n
-.It [+]number
-A positive number representing a command number; command numbers can be
-displayed with the
-.Fl l
-option.
-.It Fl number
-A negative decimal number representing the command that was executed
-number of commands previously.
-For example, \-1 is the immediately previous command.
-.El
-.It string
-A string indicating the most recently entered command that begins with
-that string.
-If the old=new operand is not also specified with
-.Fl s ,
-the string form of the first operand cannot contain an embedded equal sign.
-.El
-.Pp
-The following environment variables affect the execution of fc:
-.Bl -tag -width HISTSIZE
-.It Ev FCEDIT
-Name of the editor to use.
-.It Ev HISTSIZE
-The number of previous commands that are accessible.
-.El
-.It fg Op Ar job
-Move the specified job or the current job to the foreground.
-.It getopts Ar optstring var
-The
-.Tn POSIX
-.Ic getopts
-command, not to be confused with the
-.Em Bell Labs
--derived
-.Xr getopt 1 .
-.Pp
-The first argument should be a series of letters, each of which may be
-optionally followed by a colon to indicate that the option requires an
-argument.
-The variable specified is set to the parsed option.
-.Pp
-The
-.Ic getopts
-command deprecates the older
-.Xr getopt 1
-utility due to its handling of arguments containing whitespace.
-.Pp
-The
-.Ic getopts
-builtin may be used to obtain options and their arguments
-from a list of parameters.
-When invoked,
-.Ic getopts
-places the value of the next option from the option string in the list in
-the shell variable specified by
-.Va var
-and its index in the shell variable
-.Ev OPTIND .
-When the shell is invoked,
-.Ev OPTIND
-is initialized to 1.
-For each option that requires an argument, the
-.Ic getopts
-builtin will place it in the shell variable
-.Ev OPTARG .
-If an option is not allowed for in the
-.Va optstring ,
-then
-.Ev OPTARG
-will be unset.
-.Pp
-.Va optstring
-is a string of recognized option letters (see
-.Xr getopt 3 ) .
-If a letter is followed by a colon, the option is expected to have an
-argument which may or may not be separated from it by white space.
-If an option character is not found where expected,
-.Ic getopts
-will set the variable
-.Va var
-to a
-.Dq \&? ;
-.Ic getopts
-will then unset
-.Ev OPTARG
-and write output to standard error.
-By specifying a colon as the first character of
-.Va optstring
-all errors will be ignored.
-.Pp
-A nonzero value is returned when the last option is reached.
-If there are no remaining arguments,
-.Ic getopts
-will set
-.Va var
-to the special option,
-.Dq -- ,
-otherwise, it will set
-.Va var
-to
-.Dq \&? .
-.Pp
-The following code fragment shows how one might process the arguments
-for a command that can take the options
-.Op a
-and
-.Op b ,
-and the option
-.Op c ,
-which requires an argument.
-.Pp
-.Bd -literal -offset indent
-while getopts abc: f
-do
- case $f in
- a | b) flag=$f;;
- c) carg=$OPTARG;;
- \\?) echo $USAGE; exit 1;;
- esac
-done
-shift `expr $OPTIND - 1`
-.Ed
-.Pp
-This code will accept any of the following as equivalent:
-.Pp
-.Bd -literal -offset indent
-cmd \-acarg file file
-cmd \-a \-c arg file file
-cmd \-carg -a file file
-cmd \-a \-carg \-\- file file
-.Ed
-.It hash Fl rv Ar command ...
-The shell maintains a hash table which remembers the
-locations of commands.
-With no arguments whatsoever,
-the
-.Ic hash
-command prints out the contents of this table.
-Entries which have not been looked at since the last
-.Ic cd
-command are marked with an asterisk; it is possible for these entries
-to be invalid.
-.Pp
-With arguments, the
-.Ic hash
-command removes the specified commands from the hash table (unless
-they are functions) and then locates them.
-With the
-.Fl v
-option, hash prints the locations of the commands as it finds them.
-The
-.Fl r
-option causes the hash command to delete all the entries in the hash table
-except for functions.
-.It inputrc Ar file
-Read the
-.Va file
-to set keybindings as defined by
-.Xr editrc 5 .
-.It jobid Op Ar job
-Print the process id's of the processes in the job.
-If the
-.Ar job
-argument is omitted, the current job is used.
-.It jobs
-This command lists out all the background processes
-which are children of the current shell process.
-.It pwd Op Fl LP
-Print the current directory.
-If
-.Fl L
-is specified the cached value (initially set from
-.Ev PWD )
-is checked to see if it refers to the current directory, if it does
-the value is printed.
-Otherwise the current directory name is found using
-.Xr getcwd(3) .
-The environment variable
-.Ev PWD
-is set to printed value.
-.Pp
-The default is
-.Ic pwd
-.Fl L ,
-but note that the builtin
-.Ic cd
-command doesn't currently support
-.Fl L
-or
-.Fl P
-and will cache (almost) the absolute path.
-If
-.Ic cd
-is changed,
-.Ic pwd
-may be changed to default to
-.Ic pwd
-.Fl P .
-.Pp
-If the current directory is renamed and replaced by a symlink to the
-same directory, or the initial
-.Ev PWD
-value followed a symbolic link, then the cached value may not
-be the absolute path.
-.Pp
-The builtin command may differ from the program of the same name because
-the program will use
-.Ev PWD
-and the builtin uses a separately cached value.
-.It Xo read Op Fl p Ar prompt
-.Op Fl r
-.Ar variable
-.Op Ar ...
-.Xc
-The prompt is printed if the
-.Fl p
-option is specified and the standard input is a terminal.
-Then a line is read from the standard input.
-The trailing newline is deleted from the
-line and the line is split as described in the section on word splitting
-above, and the pieces are assigned to the variables in order.
-If there are more pieces than variables, the remaining pieces
-(along with the characters in
-.Ev IFS
-that separated them) are assigned to the last variable.
-If there are more variables than pieces,
-the remaining variables are assigned the null string.
-The
-.Ic read
-builtin will indicate success unless EOF is encountered on input, in
-which case failure is returned.
-.Pp
-By default, unless the
-.Fl r
-option is specified, the backslash
-.Dq \e
-acts as an escape character, causing the following character to be treated
-literally.
-If a backslash is followed by a newline, the backslash and the
-newline will be deleted.
-.It readonly Ar name ...
-.It readonly Fl p
-The specified names are marked as read only, so that they cannot be
-subsequently modified or unset.
-The shell allows the value of a variable
-to be set at the same time it is marked read only by writing
-.Pp
-.Dl readonly name=value
-.Pp
-With no arguments the readonly command lists the names of all read only
-variables.
-With the
-.Fl p
-option specified the output will be formatted suitably for non-interactive use.
-.Pp
-.It Xo set
-.Oo {
-.Fl options | Cm +options | Cm -- }
-.Oc Ar arg ...
-.Xc
-The
-.Ic set
-command performs three different functions.
-.Pp
-With no arguments, it lists the values of all shell variables.
-.Pp
-If options are given, it sets the specified option
-flags, or clears them as described in the section called
-.Sx Argument List Processing .
-.Pp
-The third use of the set command is to set the values of the shell's
-positional parameters to the specified args.
-To change the positional
-parameters without changing any options, use
-.Dq --
-as the first argument to set.
-If no args are present, the set command
-will clear all the positional parameters (equivalent to executing
-.Dq shift $# . )
-.It setvar Ar variable Ar value
-Assigns value to variable.
-(In general it is better to write
-variable=value rather than using
-.Ic setvar .
-.Ic setvar
-is intended to be used in
-functions that assign values to variables whose names are passed as
-parameters.)
-.It shift Op Ar n
-Shift the positional parameters n times.
-A
-.Ic shift
-sets the value of
-.Va $1
-to the value of
-.Va $2 ,
-the value of
-.Va $2
-to the value of
-.Va $3 ,
-and so on, decreasing
-the value of
-.Va $#
-by one.
-If there are zero positional parameters,
-.Ic shift
-does nothing.
-.It Xo trap
-.Op Fl l
-.Xc
-.It Xo trap
-.Op Ar action
-.Ar signal ...
-.Xc
-Cause the shell to parse and execute action when any of the specified
-signals are received.
-The signals are specified by signal number or as the name of the signal.
-If
-.Ar signal
-is
-.Li 0 ,
-the action is executed when the shell exits.
-.Ar action
-may be null, which cause the specified signals to be ignored.
-With
-.Ar action
-omitted or set to `-' the specified signals are set to their default action.
-When the shell forks off a subshell, it resets trapped (but not ignored)
-signals to the default action.
-The
-.Ic trap
-command has no effect on signals that were
-ignored on entry to the shell.
-Issuing
-.Ic trap
-with option
-.Ar -l
-will print a list of valid signal names.
-.Ic trap
-without any arguments cause it to write a list of signals and their
-associated action to the standard output in a format that is suitable
-as an input to the shell that achieves the same trapping results.
-.Pp
-Examples:
-.Pp
-.Dl trap
-.Pp
-List trapped signals and their corresponding action
-.Pp
-.Dl trap -l
-.Pp
-Print a list of valid signals
-.Pp
-.Dl trap '' INT QUIT tstp 30
-.Pp
-Ignore signals INT QUIT TSTP USR1
-.Pp
-.Dl trap date INT
-.Pp
-Print date upon receiving signal INT
-.It type Op Ar name ...
-Interpret each name as a command and print the resolution of the command
-search.
-Possible resolutions are:
-shell keyword, alias, shell builtin,
-command, tracked alias and not found.
-For aliases the alias expansion is
-printed; for commands and tracked aliases the complete pathname of the
-command is printed.
-.It ulimit Xo
-.Op Fl H \*(Ba Fl S
-.Op Fl a \*(Ba Fl tfdscmlpn Op Ar value
-.Xc
-Inquire about or set the hard or soft limits on processes or set new
-limits.
-The choice between hard limit (which no process is allowed to
-violate, and which may not be raised once it has been lowered) and soft
-limit (which causes processes to be signaled but not necessarily killed,
-and which may be raised) is made with these flags:
-.Bl -tag -width Fl
-.It Fl H
-set or inquire about hard limits
-.It Fl S
-set or inquire about soft limits.
-If neither
-.Fl H
-nor
-.Fl S
-is specified, the soft limit is displayed or both limits are set.
-If both are specified, the last one wins.
-.El
-.Pp
-.Bl -tag -width Fl
-The limit to be interrogated or set, then, is chosen by specifying
-any one of these flags:
-.It Fl a
-show all the current limits
-.It Fl b
-show or set the limit on the socket buffer size of a process (in bytes)
-.It Fl t
-show or set the limit on CPU time (in seconds)
-.It Fl f
-show or set the limit on the largest file that can be created
-(in 512-byte blocks)
-.It Fl d
-show or set the limit on the data segment size of a process (in kilobytes)
-.It Fl s
-show or set the limit on the stack size of a process (in kilobytes)
-.It Fl c
-show or set the limit on the largest core dump size that can be produced
-(in 512-byte blocks)
-.It Fl m
-show or set the limit on the total physical memory that can be
-in use by a process (in kilobytes)
-.It Fl l
-show or set the limit on how much memory a process can lock with
-.Xr mlock 2
-(in kilobytes)
-.It Fl p
-show or set the limit on the number of processes this user can
-have at one time
-.It Fl n
-show or set the limit on the number of files a process can have open at once
-.El
-.Pp
-If none of these is specified, it is the limit on file size that is shown
-or set.
-If value is specified, the limit is set to that number; otherwise
-the current limit is displayed.
-.Pp
-Limits of an arbitrary process can be displayed or set using the
-.Xr sysctl 8
-utility.
-.Pp
-.It umask Op Ar mask
-Set the value of umask (see
-.Xr umask 2 )
-to the specified octal value.
-If the argument is omitted, the umask value is printed.
-.It unalias Xo
-.Op Fl a
-.Op Ar name
-.Xc
-If
-.Ar name
-is specified, the shell removes that alias.
-If
-.Fl a
-is specified, all aliases are removed.
-.It unset Ar name ...
-The specified variables and functions are unset and unexported.
-If a given name corresponds to both a variable and a function, both
-the variable and the function are unset.
-.It wait Op Ar job
-Wait for the specified job to complete and return the exit status of the
-last process in the job.
-If the argument is omitted, wait for all jobs to
-complete and then return an exit status of zero.
-.El
-.Ss Command Line Editing
-When
-.Nm
-is being used interactively from a terminal, the current command
-and the command history (see
-.Ic fc
-in
-.Sx Builtins )
-can be edited using emacs-mode or vi-mode command-line editing.
-The command
-.Ql set -o emacs
-enables emacs-mode editing.
-The command
-.Ql set -o vi
-enables vi-mode editing and places sh into vi insert mode.
-(See the
-.Sx Argument List Processing
-section above.)
-.Pp
-The vi mode uses commands similar to a subset of those described in the
-.Xr vi 1
-man page.
-With vi-mode
-enabled, sh can be switched between insert mode and command mode.
-It's similar to vi: typing
-.Aq ESC
-will throw you into command VI command mode.
-Hitting
-.Aq return
-while in command mode will pass the line to the shell.
-.Pp
-The emacs mode uses commands similar to a subset available in
-the emacs editor.
-With emacs-mode enabled, special keys can be used to modify the text
-in the buffer using the control key.
-.Pp
-.Nm
-uses the
-.Xr editline 3
-library.
-.Sh EXIT STATUS
-Errors that are detected by the shell, such as a syntax error, will cause the
-shell to exit with a non-zero exit status.
-If the shell is not an
-interactive shell, the execution of the shell file will be aborted.
-Otherwise
-the shell will return the exit status of the last command executed, or
-if the exit builtin is used with a numeric argument, it will return the
-argument.
-.Sh ENVIRONMENT
-.Bl -tag -width MAILCHECK
-.It Ev HOME
-Set automatically by
-.Xr login 1
-from the user's login directory in the password file
-.Pq Xr passwd 5 .
-This environment variable also functions as the default argument for the
-cd builtin.
-.It Ev PATH
-The default search path for executables.
-See the above section
-.Sx Path Search .
-.It Ev CDPATH
-The search path used with the cd builtin.
-.It Ev LANG
-The string used to specify localization information that allows users
-to work with different culture-specific and language conventions.
-See
-.Xr nls 7 .
-.It Ev MAIL
-The name of a mail file, that will be checked for the arrival of new mail.
-Overridden by
-.Ev MAILPATH .
-.It Ev MAILCHECK
-The frequency in seconds that the shell checks for the arrival of mail
-in the files specified by the
-.Ev MAILPATH
-or the
-.Ev MAIL
-file.
-If set to 0, the check will occur at each prompt.
-.It Ev MAILPATH
-A colon
-.Dq \&:
-separated list of file names, for the shell to check for incoming mail.
-This environment setting overrides the
-.Ev MAIL
-setting.
-There is a maximum of 10 mailboxes that can be monitored at once.
-.It Ev PS1
-The primary prompt string, which defaults to
-.Dq $ \ ,
-unless you are the superuser, in which case it defaults to
-.Dq # \ .
-.It Ev PS2
-The secondary prompt string, which defaults to
-.Dq \*[Gt] \ .
-.It Ev PS4
-Output before each line when execution trace (set -x) is enabled,
-defaults to
-.Dq + \ .
-.It Ev IFS
-Input Field Separators.
-This is normally set to
-.Aq space ,
-.Aq tab ,
-and
-.Aq newline .
-See the
-.Sx White Space Splitting
-section for more details.
-.It Ev TERM
-The default terminal setting for the shell.
-This is inherited by
-children of the shell, and is used in the history editing modes.
-.It Ev HISTSIZE
-The number of lines in the history buffer for the shell.
-.El
-.Sh FILES
-.Bl -item -width HOMEprofilexxxx
-.It
-.Pa $HOME/.profile
-.It
-.Pa /etc/profile
-.El
-.Sh SEE ALSO
-.Xr csh 1 ,
-.Xr echo 1 ,
-.Xr getopt 1 ,
-.Xr ksh 1 ,
-.Xr login 1 ,
-.Xr printf 1 ,
-.Xr test 1 ,
-.Xr editline 3 ,
-.Xr getopt 3 ,
-.\" .Xr profile 4 ,
-.Xr editrc 5 ,
-.Xr passwd 5 ,
-.Xr environ 7 ,
-.Xr nls 7 ,
-.Xr sysctl 8
-.Sh HISTORY
-A
-.Nm
-command appeared in
-.At v1 .
-It was, however, unmaintainable so we wrote this one.
-.Sh BUGS
-Setuid shell scripts should be avoided at all costs, as they are a
-significant security risk.
-.Pp
-PS1, PS2, and PS4 should be subject to parameter expansion before
-being displayed.
diff --git a/sh/shell.h b/sh/shell.h
deleted file mode 100644
index 94be27a..0000000
--- a/sh/shell.h
+++ /dev/null
@@ -1,83 +0,0 @@
-/* $NetBSD: shell.h,v 1.17 2003/08/07 09:05:38 agc Exp $ */
-
-/*-
- * Copyright (c) 1991, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Kenneth Almquist.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * @(#)shell.h 8.2 (Berkeley) 5/4/95
- */
-
-/*
- * The follow should be set to reflect the type of system you have:
- * JOBS -> 1 if you have Berkeley job control, 0 otherwise.
- * SHORTNAMES -> 1 if your linker cannot handle long names.
- * define BSD if you are running 4.2 BSD or later.
- * define SYSV if you are running under System V.
- * define DEBUG=1 to compile in debugging ('set -o debug' to turn on)
- * define DEBUG=2 to compile in and turn on debugging.
- * define DO_SHAREDVFORK to indicate that vfork(2) shares its address
- * with its parent.
- *
- * When debugging is on, debugging info will be written to ./trace and
- * a quit signal will generate a core dump.
- */
-
-#include <sys/param.h>
-
-#define JOBS 1
-#ifndef BSD
-#define BSD 1
-#endif
-
-#ifndef DO_SHAREDVFORK
-#if __NetBSD_Version__ >= 104000000
-#define DO_SHAREDVFORK
-#endif
-#endif
-
-typedef void *pointer;
-#ifndef NULL
-#define NULL (void *)0
-#endif
-#define STATIC /* empty */
-#define MKINIT /* empty */
-
-#include <sys/cdefs.h>
-
-extern char nullstr[1]; /* null string */
-
-
-#ifdef DEBUG
-#define TRACE(param) trace param
-#define TRACEV(param) tracev param
-#else
-#define TRACE(param)
-#define TRACEV(param)
-#endif
diff --git a/sh/show.c b/sh/show.c
deleted file mode 100644
index e92aa51..0000000
--- a/sh/show.c
+++ /dev/null
@@ -1,425 +0,0 @@
-/* $NetBSD: show.c,v 1.26 2003/11/14 10:46:13 dsl Exp $ */
-
-/*-
- * Copyright (c) 1991, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Kenneth Almquist.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <sys/cdefs.h>
-#ifndef lint
-#if 0
-static char sccsid[] = "@(#)show.c 8.3 (Berkeley) 5/4/95";
-#else
-__RCSID("$NetBSD: show.c,v 1.26 2003/11/14 10:46:13 dsl Exp $");
-#endif
-#endif /* not lint */
-
-#include <stdio.h>
-#include <stdarg.h>
-#include <stdlib.h>
-
-#include "shell.h"
-#include "parser.h"
-#include "nodes.h"
-#include "mystring.h"
-#include "show.h"
-#include "options.h"
-
-
-#ifdef DEBUG
-static void shtree(union node *, int, char *, FILE*);
-static void shcmd(union node *, FILE *);
-static void sharg(union node *, FILE *);
-static void indent(int, char *, FILE *);
-static void trstring(char *);
-
-
-void
-showtree(union node *n)
-{
- trputs("showtree called\n");
- shtree(n, 1, NULL, stdout);
-}
-
-
-static void
-shtree(union node *n, int ind, char *pfx, FILE *fp)
-{
- struct nodelist *lp;
- const char *s;
-
- if (n == NULL)
- return;
-
- indent(ind, pfx, fp);
- switch(n->type) {
- case NSEMI:
- s = "; ";
- goto binop;
- case NAND:
- s = " && ";
- goto binop;
- case NOR:
- s = " || ";
-binop:
- shtree(n->nbinary.ch1, ind, NULL, fp);
- /* if (ind < 0) */
- fputs(s, fp);
- shtree(n->nbinary.ch2, ind, NULL, fp);
- break;
- case NCMD:
- shcmd(n, fp);
- if (ind >= 0)
- putc('\n', fp);
- break;
- case NPIPE:
- for (lp = n->npipe.cmdlist ; lp ; lp = lp->next) {
- shcmd(lp->n, fp);
- if (lp->next)
- fputs(" | ", fp);
- }
- if (n->npipe.backgnd)
- fputs(" &", fp);
- if (ind >= 0)
- putc('\n', fp);
- break;
- default:
- fprintf(fp, "<node type %d>", n->type);
- if (ind >= 0)
- putc('\n', fp);
- break;
- }
-}
-
-
-
-static void
-shcmd(union node *cmd, FILE *fp)
-{
- union node *np;
- int first;
- const char *s;
- int dftfd;
-
- first = 1;
- for (np = cmd->ncmd.args ; np ; np = np->narg.next) {
- if (! first)
- putchar(' ');
- sharg(np, fp);
- first = 0;
- }
- for (np = cmd->ncmd.redirect ; np ; np = np->nfile.next) {
- if (! first)
- putchar(' ');
- switch (np->nfile.type) {
- case NTO: s = ">"; dftfd = 1; break;
- case NCLOBBER: s = ">|"; dftfd = 1; break;
- case NAPPEND: s = ">>"; dftfd = 1; break;
- case NTOFD: s = ">&"; dftfd = 1; break;
- case NFROM: s = "<"; dftfd = 0; break;
- case NFROMFD: s = "<&"; dftfd = 0; break;
- case NFROMTO: s = "<>"; dftfd = 0; break;
- default: s = "*error*"; dftfd = 0; break;
- }
- if (np->nfile.fd != dftfd)
- fprintf(fp, "%d", np->nfile.fd);
- fputs(s, fp);
- if (np->nfile.type == NTOFD || np->nfile.type == NFROMFD) {
- fprintf(fp, "%d", np->ndup.dupfd);
- } else {
- sharg(np->nfile.fname, fp);
- }
- first = 0;
- }
-}
-
-
-
-static void
-sharg(union node *arg, FILE *fp)
-{
- char *p;
- struct nodelist *bqlist;
- int subtype;
-
- if (arg->type != NARG) {
- printf("<node type %d>\n", arg->type);
- abort();
- }
- bqlist = arg->narg.backquote;
- for (p = arg->narg.text ; *p ; p++) {
- switch (*p) {
- case CTLESC:
- putc(*++p, fp);
- break;
- case CTLVAR:
- putc('$', fp);
- putc('{', fp);
- subtype = *++p;
- if (subtype == VSLENGTH)
- putc('#', fp);
-
- while (*p != '=')
- putc(*p++, fp);
-
- if (subtype & VSNUL)
- putc(':', fp);
-
- switch (subtype & VSTYPE) {
- case VSNORMAL:
- putc('}', fp);
- break;
- case VSMINUS:
- putc('-', fp);
- break;
- case VSPLUS:
- putc('+', fp);
- break;
- case VSQUESTION:
- putc('?', fp);
- break;
- case VSASSIGN:
- putc('=', fp);
- break;
- case VSTRIMLEFT:
- putc('#', fp);
- break;
- case VSTRIMLEFTMAX:
- putc('#', fp);
- putc('#', fp);
- break;
- case VSTRIMRIGHT:
- putc('%', fp);
- break;
- case VSTRIMRIGHTMAX:
- putc('%', fp);
- putc('%', fp);
- break;
- case VSLENGTH:
- break;
- default:
- printf("<subtype %d>", subtype);
- }
- break;
- case CTLENDVAR:
- putc('}', fp);
- break;
- case CTLBACKQ:
- case CTLBACKQ|CTLQUOTE:
- putc('$', fp);
- putc('(', fp);
- shtree(bqlist->n, -1, NULL, fp);
- putc(')', fp);
- break;
- default:
- putc(*p, fp);
- break;
- }
- }
-}
-
-
-static void
-indent(int amount, char *pfx, FILE *fp)
-{
- int i;
-
- for (i = 0 ; i < amount ; i++) {
- if (pfx && i == amount - 1)
- fputs(pfx, fp);
- putc('\t', fp);
- }
-}
-#endif
-
-
-
-/*
- * Debugging stuff.
- */
-
-
-FILE *tracefile;
-
-
-#ifdef DEBUG
-void
-trputc(int c)
-{
- if (debug != 1)
- return;
- putc(c, tracefile);
-}
-#endif
-
-void
-trace(const char *fmt, ...)
-{
-#ifdef DEBUG
- va_list va;
-
- if (debug != 1)
- return;
- va_start(va, fmt);
- (void) vfprintf(tracefile, fmt, va);
- va_end(va);
-#endif
-}
-
-void
-tracev(const char *fmt, va_list va)
-{
-#ifdef DEBUG
- if (debug != 1)
- return;
- (void) vfprintf(tracefile, fmt, va);
-#endif
-}
-
-
-#ifdef DEBUG
-void
-trputs(const char *s)
-{
- if (debug != 1)
- return;
- fputs(s, tracefile);
-}
-
-
-static void
-trstring(char *s)
-{
- char *p;
- char c;
-
- if (debug != 1)
- return;
- putc('"', tracefile);
- for (p = s ; *p ; p++) {
- switch (*p) {
- case '\n': c = 'n'; goto backslash;
- case '\t': c = 't'; goto backslash;
- case '\r': c = 'r'; goto backslash;
- case '"': c = '"'; goto backslash;
- case '\\': c = '\\'; goto backslash;
- case CTLESC: c = 'e'; goto backslash;
- case CTLVAR: c = 'v'; goto backslash;
- case CTLVAR+CTLQUOTE: c = 'V'; goto backslash;
- case CTLBACKQ: c = 'q'; goto backslash;
- case CTLBACKQ+CTLQUOTE: c = 'Q'; goto backslash;
-backslash: putc('\\', tracefile);
- putc(c, tracefile);
- break;
- default:
- if (*p >= ' ' && *p <= '~')
- putc(*p, tracefile);
- else {
- putc('\\', tracefile);
- putc(*p >> 6 & 03, tracefile);
- putc(*p >> 3 & 07, tracefile);
- putc(*p & 07, tracefile);
- }
- break;
- }
- }
- putc('"', tracefile);
-}
-#endif
-
-
-void
-trargs(char **ap)
-{
-#ifdef DEBUG
- if (debug != 1)
- return;
- while (*ap) {
- trstring(*ap++);
- if (*ap)
- putc(' ', tracefile);
- else
- putc('\n', tracefile);
- }
-#endif
-}
-
-
-#ifdef DEBUG
-void
-opentrace(void)
-{
- char s[100];
-#ifdef O_APPEND
- int flags;
-#endif
-
- if (debug != 1) {
- if (tracefile)
- fflush(tracefile);
- /* leave open because libedit might be using it */
- return;
- }
-#ifdef not_this_way
- {
- char *p;
- if ((p = getenv("HOME")) == NULL) {
- if (geteuid() == 0)
- p = "/";
- else
- p = "/tmp";
- }
- scopy(p, s);
- strcat(s, "/trace");
- }
-#else
- scopy("./trace", s);
-#endif /* not_this_way */
- if (tracefile) {
- if (!freopen(s, "a", tracefile)) {
- fprintf(stderr, "Can't re-open %s\n", s);
- debug = 0;
- return;
- }
- } else {
- if ((tracefile = fopen(s, "a")) == NULL) {
- fprintf(stderr, "Can't open %s\n", s);
- debug = 0;
- return;
- }
- }
-#ifdef O_APPEND
- if ((flags = fcntl(fileno(tracefile), F_GETFL, 0)) >= 0)
- fcntl(fileno(tracefile), F_SETFL, flags | O_APPEND);
-#endif
- setlinebuf(tracefile);
- fputs("\nTracing started.\n", tracefile);
-}
-#endif /* DEBUG */
diff --git a/sh/show.h b/sh/show.h
deleted file mode 100644
index 3152ff2..0000000
--- a/sh/show.h
+++ /dev/null
@@ -1,45 +0,0 @@
-/* $NetBSD: show.h,v 1.7 2003/08/07 09:05:38 agc Exp $ */
-
-/*-
- * Copyright (c) 1995
- * The Regents of the University of California. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * @(#)show.h 1.1 (Berkeley) 5/4/95
- */
-
-#include <stdarg.h>
-
-union node;
-void showtree(union node *);
-void trace(const char *, ...);
-void tracev(const char *, va_list);
-void trargs(char **);
-#ifdef DEBUG
-void trputc(int);
-void trputs(const char *);
-void opentrace(void);
-#endif
diff --git a/sh/syntax.c b/sh/syntax.c
deleted file mode 100644
index 094f674..0000000
--- a/sh/syntax.c
+++ /dev/null
@@ -1,102 +0,0 @@
-/* $NetBSD: syntax.c,v 1.1 2004/01/17 17:38:12 dsl Exp $ */
-
-#include "shell.h"
-#include "syntax.h"
-#include "parser.h"
-#include <limits.h>
-
-#if CWORD != 0
-#error initialisation assumes 'CWORD' is zero
-#endif
-
-#define ndx(ch) (ch + 1 - CHAR_MIN)
-#define set(ch, val) [ndx(ch)] = val,
-#define set_range(s, e, val) [ndx(s) ... ndx(e)] = val,
-
-/* syntax table used when not in quotes */
-const char basesyntax[257] = { CEOF,
- set_range(CTL_FIRST, CTL_LAST, CCTL)
- set('\n', CNL)
- set('\\', CBACK)
- set('\'', CSQUOTE)
- set('"', CDQUOTE)
- set('`', CBQUOTE)
- set('$', CVAR)
- set('}', CENDVAR)
- set('<', CSPCL)
- set('>', CSPCL)
- set('(', CSPCL)
- set(')', CSPCL)
- set(';', CSPCL)
- set('&', CSPCL)
- set('|', CSPCL)
- set(' ', CSPCL)
- set('\t', CSPCL)
-};
-
-/* syntax table used when in double quotes */
-const char dqsyntax[257] = { CEOF,
- set_range(CTL_FIRST, CTL_LAST, CCTL)
- set('\n', CNL)
- set('\\', CBACK)
- set('"', CDQUOTE)
- set('`', CBQUOTE)
- set('$', CVAR)
- set('}', CENDVAR)
- /* ':/' for tilde expansion, '-' for [a\-x] pattern ranges */
- set('!', CCTL)
- set('*', CCTL)
- set('?', CCTL)
- set('[', CCTL)
- set('=', CCTL)
- set('~', CCTL)
- set(':', CCTL)
- set('/', CCTL)
- set('-', CCTL)
-};
-
-/* syntax table used when in single quotes */
-const char sqsyntax[257] = { CEOF,
- set_range(CTL_FIRST, CTL_LAST, CCTL)
- set('\n', CNL)
- set('\'', CSQUOTE)
- /* ':/' for tilde expansion, '-' for [a\-x] pattern ranges */
- set('!', CCTL)
- set('*', CCTL)
- set('?', CCTL)
- set('[', CCTL)
- set('=', CCTL)
- set('~', CCTL)
- set(':', CCTL)
- set('/', CCTL)
- set('-', CCTL)
-};
-
-/* syntax table used when in arithmetic */
-const char arisyntax[257] = { CEOF,
- set_range(CTL_FIRST, CTL_LAST, CCTL)
- set('\n', CNL)
- set('\\', CBACK)
- set('`', CBQUOTE)
- set('\'', CSQUOTE)
- set('"', CDQUOTE)
- set('$', CVAR)
- set('}', CENDVAR)
- set('(', CLP)
- set(')', CRP)
-};
-
-/* character classification table */
-const char is_type[257] = { 0,
- set_range('0', '9', ISDIGIT)
- set_range('a', 'z', ISLOWER)
- set_range('A', 'Z', ISUPPER)
- set('_', ISUNDER)
- set('#', ISSPECL)
- set('?', ISSPECL)
- set('$', ISSPECL)
- set('!', ISSPECL)
- set('-', ISSPECL)
- set('*', ISSPECL)
- set('@', ISSPECL)
-};
diff --git a/sh/syntax.h b/sh/syntax.h
deleted file mode 100644
index 89a32dc..0000000
--- a/sh/syntax.h
+++ /dev/null
@@ -1,83 +0,0 @@
-/* $NetBSD: syntax.h,v 1.2 2004/01/17 17:38:12 dsl Exp $ */
-
-/*-
- * Copyright (c) 1991, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Kenneth Almquist.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <sys/cdefs.h>
-#include <ctype.h>
-
-/* Syntax classes */
-#define CWORD 0 /* character is nothing special */
-#define CNL 1 /* newline character */
-#define CBACK 2 /* a backslash character */
-#define CSQUOTE 3 /* single quote */
-#define CDQUOTE 4 /* double quote */
-#define CBQUOTE 5 /* backwards single quote */
-#define CVAR 6 /* a dollar sign */
-#define CENDVAR 7 /* a '}' character */
-#define CLP 8 /* a left paren in arithmetic */
-#define CRP 9 /* a right paren in arithmetic */
-#define CEOF 10 /* end of file */
-#define CCTL 11 /* like CWORD, except it must be escaped */
-#define CSPCL 12 /* these terminate a word */
-
-/* Syntax classes for is_ functions */
-#define ISDIGIT 01 /* a digit */
-#define ISUPPER 02 /* an upper case letter */
-#define ISLOWER 04 /* a lower case letter */
-#define ISUNDER 010 /* an underscore */
-#define ISSPECL 020 /* the name of a special parameter */
-
-#define PEOF (CHAR_MIN - 1)
-#define SYNBASE (-PEOF)
-/* XXX UPEOF is CHAR_MAX, so is a valid 'char' value... */
-#define UPEOF ((char)PEOF)
-
-
-#define BASESYNTAX (basesyntax + SYNBASE)
-#define DQSYNTAX (dqsyntax + SYNBASE)
-#define SQSYNTAX (sqsyntax + SYNBASE)
-#define ARISYNTAX (arisyntax + SYNBASE)
-
-/* These defines assume that the digits are contiguous */
-#define is_digit(c) ((unsigned)((c) - '0') <= 9)
-#define is_alpha(c) (((char)(c)) != UPEOF && ((c) < CTL_FIRST || (c) > CTL_LAST) && isalpha((unsigned char)(c)))
-#define is_name(c) (((char)(c)) != UPEOF && ((c) < CTL_FIRST || (c) > CTL_LAST) && ((c) == '_' || isalpha((unsigned char)(c))))
-#define is_in_name(c) (((char)(c)) != UPEOF && ((c) < CTL_FIRST || (c) > CTL_LAST) && ((c) == '_' || isalnum((unsigned char)(c))))
-#define is_special(c) ((is_type+SYNBASE)[c] & (ISSPECL|ISDIGIT))
-#define digit_val(c) ((c) - '0')
-
-extern const char basesyntax[];
-extern const char dqsyntax[];
-extern const char sqsyntax[];
-extern const char arisyntax[];
-extern const char is_type[];
diff --git a/sh/token.h b/sh/token.h
deleted file mode 100644
index c961f01..0000000
--- a/sh/token.h
+++ /dev/null
@@ -1,112 +0,0 @@
-#define TEOF 0
-#define TNL 1
-#define TSEMI 2
-#define TBACKGND 3
-#define TAND 4
-#define TOR 5
-#define TPIPE 6
-#define TLP 7
-#define TRP 8
-#define TENDCASE 9
-#define TENDBQUOTE 10
-#define TREDIR 11
-#define TWORD 12
-#define TIF 13
-#define TTHEN 14
-#define TELSE 15
-#define TELIF 16
-#define TFI 17
-#define TWHILE 18
-#define TUNTIL 19
-#define TFOR 20
-#define TDO 21
-#define TDONE 22
-#define TBEGIN 23
-#define TEND 24
-#define TCASE 25
-#define TESAC 26
-#define TNOT 27
-
-/* Array indicating which tokens mark the end of a list */
-const char tokendlist[] = {
- 1,
- 0,
- 0,
- 0,
- 0,
- 0,
- 0,
- 0,
- 1,
- 1,
- 1,
- 0,
- 0,
- 0,
- 1,
- 1,
- 1,
- 1,
- 0,
- 0,
- 0,
- 1,
- 1,
- 0,
- 1,
- 0,
- 1,
- 0,
-};
-
-const char *const tokname[] = {
- "end of file",
- "newline",
- "\";\"",
- "\"&\"",
- "\"&&\"",
- "\"||\"",
- "\"|\"",
- "\"(\"",
- "\")\"",
- "\";;\"",
- "\"`\"",
- "redirection",
- "word",
- "\"if\"",
- "\"then\"",
- "\"else\"",
- "\"elif\"",
- "\"fi\"",
- "\"while\"",
- "\"until\"",
- "\"for\"",
- "\"do\"",
- "\"done\"",
- "\"{\"",
- "\"}\"",
- "\"case\"",
- "\"esac\"",
- "\"!\"",
-};
-
-#define KWDOFFSET 13
-
-const char *const parsekwd[] = {
- "if",
- "then",
- "else",
- "elif",
- "fi",
- "while",
- "until",
- "for",
- "do",
- "done",
- "{",
- "}",
- "case",
- "esac",
- "!",
- 0
-};
diff --git a/sh/trap.c b/sh/trap.c
deleted file mode 100644
index dcd76ac..0000000
--- a/sh/trap.c
+++ /dev/null
@@ -1,456 +0,0 @@
-/* $NetBSD: trap.c,v 1.31 2005/01/11 19:38:57 christos Exp $ */
-
-/*-
- * Copyright (c) 1991, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Kenneth Almquist.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <sys/cdefs.h>
-#ifndef lint
-#if 0
-static char sccsid[] = "@(#)trap.c 8.5 (Berkeley) 6/5/95";
-#else
-__RCSID("$NetBSD: trap.c,v 1.31 2005/01/11 19:38:57 christos Exp $");
-#endif
-#endif /* not lint */
-
-#include <signal.h>
-#include <unistd.h>
-#include <stdlib.h>
-
-#include "shell.h"
-#include "main.h"
-#include "nodes.h" /* for other headers */
-#include "eval.h"
-#include "jobs.h"
-#include "show.h"
-#include "options.h"
-#include "syntax.h"
-#include "output.h"
-#include "memalloc.h"
-#include "error.h"
-#include "trap.h"
-#include "mystring.h"
-#include "var.h"
-
-/*
- * Sigmode records the current value of the signal handlers for the various
- * modes. A value of zero means that the current handler is not known.
- * S_HARD_IGN indicates that the signal was ignored on entry to the shell,
- */
-
-#define S_DFL 1 /* default signal handling (SIG_DFL) */
-#define S_CATCH 2 /* signal is caught */
-#define S_IGN 3 /* signal is ignored (SIG_IGN) */
-#define S_HARD_IGN 4 /* signal is ignored permenantly */
-#define S_RESET 5 /* temporary - to reset a hard ignored sig */
-
-
-char *trap[NSIG+1]; /* trap handler commands */
-MKINIT char sigmode[NSIG]; /* current value of signal */
-char gotsig[NSIG]; /* indicates specified signal received */
-int pendingsigs; /* indicates some signal received */
-
-static int getsigaction(int, sig_t *);
-
-/*
- * return the signal number described by `p' (as a number or a name)
- * or -1 if it isn't one
- */
-
-static int
-signame_to_signum(const char *p)
-{
- int i;
-
- if (is_number(p))
- return number(p);
-
- if (strcasecmp(p, "exit") == 0 )
- return 0;
-
- if (strncasecmp(p, "sig", 3) == 0)
- p += 3;
-
- for (i = 0; i < NSIG; ++i)
- if (sys_signame[i] && (strcasecmp (p, sys_signame[i]) == 0))
- return i;
- return -1;
-}
-
-/*
- * Print a list of valid signal names
- */
-static void
-printsignals(void)
-{
- int n;
-
- out1str("EXIT ");
-
- for (n = 1; n < NSIG; n++) {
- out1fmt("%s", sys_signame[n]);
- if ((n == NSIG/2) || n == (NSIG - 1))
- out1str("\n");
- else
- out1c(' ');
- }
-}
-
-/*
- * The trap builtin.
- */
-
-int
-trapcmd(int argc, char **argv)
-{
- char *action;
- char **ap;
- int signo;
-
- if (argc <= 1) {
- for (signo = 0 ; signo <= NSIG ; signo++)
- if (trap[signo] != NULL) {
- out1fmt("trap -- ");
- print_quoted(trap[signo]);
- out1fmt(" %s\n",
- (signo) ? sys_signame[signo] : "EXIT");
- }
- return 0;
- }
- ap = argv + 1;
-
- action = NULL;
-
- if (strcmp(*ap, "--") == 0)
- if (*++ap == NULL)
- return 0;
-
- if (signame_to_signum(*ap) == -1) {
- if ((*ap)[0] == '-') {
- if ((*ap)[1] == '\0')
- ap++;
- else if ((*ap)[1] == 'l' && (*ap)[2] == '\0') {
- printsignals();
- return 0;
- }
- else
- error("bad option %s\n", *ap);
- }
- else
- action = *ap++;
- }
-
- while (*ap) {
- if (is_number(*ap))
- signo = number(*ap);
- else
- signo = signame_to_signum(*ap);
-
- if (signo < 0 || signo > NSIG)
- error("%s: bad trap", *ap);
-
- INTOFF;
- if (action)
- action = savestr(action);
-
- if (trap[signo])
- ckfree(trap[signo]);
-
- trap[signo] = action;
-
- if (signo != 0)
- setsignal(signo, 0);
- INTON;
- ap++;
- }
- return 0;
-}
-
-
-
-/*
- * Clear traps on a fork or vfork.
- * Takes one arg vfork, to tell it to not be destructive of
- * the parents variables.
- */
-
-void
-clear_traps(int vforked)
-{
- char **tp;
-
- for (tp = trap ; tp <= &trap[NSIG] ; tp++) {
- if (*tp && **tp) { /* trap not NULL or SIG_IGN */
- INTOFF;
- if (!vforked) {
- ckfree(*tp);
- *tp = NULL;
- }
- if (tp != &trap[0])
- setsignal(tp - trap, vforked);
- INTON;
- }
- }
-}
-
-
-
-/*
- * Set the signal handler for the specified signal. The routine figures
- * out what it should be set to.
- */
-
-long
-setsignal(int signo, int vforked)
-{
- int action;
- sig_t sigact = SIG_DFL;
- struct sigaction act, oact;
- char *t, tsig;
-
- if ((t = trap[signo]) == NULL)
- action = S_DFL;
- else if (*t != '\0')
- action = S_CATCH;
- else
- action = S_IGN;
- if (rootshell && !vforked && action == S_DFL) {
- switch (signo) {
- case SIGINT:
- if (iflag || minusc || sflag == 0)
- action = S_CATCH;
- break;
- case SIGQUIT:
-#ifdef DEBUG
- if (debug)
- break;
-#endif
- /* FALLTHROUGH */
- case SIGTERM:
- if (iflag)
- action = S_IGN;
- break;
-#if JOBS
- case SIGTSTP:
- case SIGTTOU:
- if (mflag)
- action = S_IGN;
- break;
-#endif
- }
- }
-
- t = &sigmode[signo - 1];
- tsig = *t;
- if (tsig == 0) {
- /*
- * current setting unknown
- */
- if (!getsigaction(signo, &sigact)) {
- /*
- * Pretend it worked; maybe we should give a warning
- * here, but other shells don't. We don't alter
- * sigmode, so that we retry every time.
- */
- return 0;
- }
- if (sigact == SIG_IGN) {
- if (mflag && (signo == SIGTSTP ||
- signo == SIGTTIN || signo == SIGTTOU)) {
- tsig = S_IGN; /* don't hard ignore these */
- } else
- tsig = S_HARD_IGN;
- } else {
- tsig = S_RESET; /* force to be set */
- }
- }
- if (tsig == S_HARD_IGN || tsig == action)
- return 0;
- switch (action) {
- case S_DFL: sigact = SIG_DFL; break;
- case S_CATCH: sigact = onsig; break;
- case S_IGN: sigact = SIG_IGN; break;
- }
- if (!vforked)
- *t = action;
- act.sa_handler = sigact;
- sigemptyset(&act.sa_mask);
- act.sa_flags = 0;
-#ifdef SA_INTERRUPT
- act.sa_flags |= SA_INTERRUPT;
-#endif
- if(sigaction(signo, &act, &oact) < 0)
- return (long) SIG_ERR;
- return (long) oact.sa_handler;
-}
-
-/*
- * Return the current setting for sig w/o changing it.
- */
-static int
-getsigaction(int signo, sig_t *sigact)
-{
- struct sigaction sa;
-
- if (sigaction(signo, (struct sigaction *)0, &sa) == -1)
- return 0;
- *sigact = (sig_t) sa.sa_handler;
- return 1;
-}
-
-/*
- * Ignore a signal.
- */
-
-void
-ignoresig(int signo, int vforked)
-{
- if (sigmode[signo - 1] != S_IGN && sigmode[signo - 1] != S_HARD_IGN)
- bsd_signal(signo, SIG_IGN);
- if (!vforked)
- sigmode[signo - 1] = S_HARD_IGN;
-}
-
-
-#ifdef mkinit
-INCLUDE <signal.h>
-INCLUDE "trap.h"
-
-SHELLPROC {
- char *sm;
-
- clear_traps(0);
- for (sm = sigmode ; sm < sigmode + NSIG ; sm++) {
- if (*sm == S_IGN)
- *sm = S_HARD_IGN;
- }
-}
-#endif
-
-
-
-/*
- * Signal handler.
- */
-
-void
-onsig(int signo)
-{
- bsd_signal(signo, onsig);
- if (signo == SIGINT && trap[SIGINT] == NULL) {
- onint();
- return;
- }
- gotsig[signo - 1] = 1;
- pendingsigs++;
-}
-
-
-
-/*
- * Called to execute a trap. Perhaps we should avoid entering new trap
- * handlers while we are executing a trap handler.
- */
-
-void
-dotrap(void)
-{
- int i;
- int savestatus;
-
- for (;;) {
- for (i = 1 ; ; i++) {
- if (gotsig[i - 1])
- break;
- if (i >= NSIG)
- goto done;
- }
- gotsig[i - 1] = 0;
- savestatus=exitstatus;
- evalstring(trap[i], 0);
- exitstatus=savestatus;
- }
-done:
- pendingsigs = 0;
-}
-
-
-
-/*
- * Controls whether the shell is interactive or not.
- */
-
-
-void
-setinteractive(int on)
-{
- static int is_interactive;
-
- if (on == is_interactive)
- return;
- setsignal(SIGINT, 0);
- setsignal(SIGQUIT, 0);
- setsignal(SIGTERM, 0);
- is_interactive = on;
-}
-
-
-
-/*
- * Called to exit the shell.
- */
-
-void
-exitshell(int status)
-{
- struct jmploc loc1, loc2;
- char *p;
-
- TRACE(("pid %d, exitshell(%d)\n", getpid(), status));
- if (setjmp(loc1.loc)) {
- goto l1;
- }
- if (setjmp(loc2.loc)) {
- goto l2;
- }
- handler = &loc1;
- if ((p = trap[0]) != NULL && *p != '\0') {
- trap[0] = NULL;
- evalstring(p, 0);
- }
-l1: handler = &loc2; /* probably unnecessary */
- flushall();
-#if JOBS
- setjobctl(0);
-#endif
-l2: _exit(status);
- /* NOTREACHED */
-}
diff --git a/sh/trap.h b/sh/trap.h
deleted file mode 100644
index 125ef40..0000000
--- a/sh/trap.h
+++ /dev/null
@@ -1,46 +0,0 @@
-/* $NetBSD: trap.h,v 1.17 2003/08/07 09:05:39 agc Exp $ */
-
-/*-
- * Copyright (c) 1991, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Kenneth Almquist.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * @(#)trap.h 8.3 (Berkeley) 6/5/95
- */
-
-extern int pendingsigs;
-
-int trapcmd(int, char **);
-void clear_traps(int);
-long setsignal(int, int);
-void ignoresig(int, int);
-void onsig(int);
-void dotrap(void);
-void setinteractive(int);
-void exitshell(int) __attribute__((__noreturn__));
diff --git a/sh/var.c b/sh/var.c
deleted file mode 100644
index a1f1689..0000000
--- a/sh/var.c
+++ /dev/null
@@ -1,825 +0,0 @@
-/* $NetBSD: var.c,v 1.36 2004/10/06 10:23:43 enami Exp $ */
-
-/*-
- * Copyright (c) 1991, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Kenneth Almquist.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <sys/cdefs.h>
-#ifndef lint
-#if 0
-static char sccsid[] = "@(#)var.c 8.3 (Berkeley) 5/4/95";
-#else
-__RCSID("$NetBSD: var.c,v 1.36 2004/10/06 10:23:43 enami Exp $");
-#endif
-#endif /* not lint */
-
-#include <unistd.h>
-#include <stdlib.h>
-#include <paths.h>
-
-/*
- * Shell variables.
- */
-
-#include "shell.h"
-#include "output.h"
-#include "expand.h"
-#include "nodes.h" /* for other headers */
-#include "eval.h" /* defines cmdenviron */
-#include "exec.h"
-#include "syntax.h"
-#include "options.h"
-#include "var.h"
-#include "memalloc.h"
-#include "error.h"
-#include "mystring.h"
-#include "parser.h"
-#include "show.h"
-#ifndef SMALL
-#include "myhistedit.h"
-#endif
-
-#ifdef SMALL
-#define VTABSIZE 39
-#else
-#define VTABSIZE 517
-#endif
-
-
-struct varinit {
- struct var *var;
- int flags;
- const char *text;
- void (*func)(const char *);
-};
-
-
-#if ATTY
-struct var vatty;
-#endif
-#ifdef WITH_HISTORY
-struct var vhistsize;
-struct var vterm;
-#endif
-struct var vifs;
-struct var vmpath;
-struct var vpath;
-struct var vps1;
-struct var vps2;
-struct var vps4;
-struct var vvers;
-struct var voptind;
-
-const struct varinit varinit[] = {
-#if ATTY
- { &vatty, VSTRFIXED|VTEXTFIXED|VUNSET, "ATTY=",
- NULL },
-#endif
-#ifdef WITH_HISTORY
- { &vhistsize, VSTRFIXED|VTEXTFIXED|VUNSET, "HISTSIZE=",
- sethistsize },
-#endif
- { &vifs, VSTRFIXED|VTEXTFIXED, "IFS= \t\n",
- NULL },
- { &vmpath, VSTRFIXED|VTEXTFIXED|VUNSET, "MAILPATH=",
- NULL },
- { &vpath, VSTRFIXED|VTEXTFIXED, "PATH=" _PATH_DEFPATH,
- changepath },
- /*
- * vps1 depends on uid
- */
- { &vps2, VSTRFIXED|VTEXTFIXED, "PS2=> ",
- NULL },
- { &vps4, VSTRFIXED|VTEXTFIXED, "PS4=+ ",
- NULL },
-#ifdef WITH_HISTORY
- { &vterm, VSTRFIXED|VTEXTFIXED|VUNSET, "TERM=",
- setterm },
-#endif
- { &voptind, VSTRFIXED|VTEXTFIXED|VNOFUNC, "OPTIND=1",
- getoptsreset },
- { NULL, 0, NULL,
- NULL }
-};
-
-struct var *vartab[VTABSIZE];
-
-STATIC int strequal(const char *, const char *);
-STATIC struct var *find_var(const char *, struct var ***, int *);
-
-/*
- * Initialize the varable symbol tables and import the environment
- */
-
-#ifdef mkinit
-INCLUDE "var.h"
-MKINIT char **environ;
-INIT {
- char **envp;
-
- initvar();
- for (envp = environ ; *envp ; envp++) {
- if (strchr(*envp, '=')) {
- setvareq(*envp, VEXPORT|VTEXTFIXED);
- }
- }
-}
-#endif
-
-
-/*
- * This routine initializes the builtin variables. It is called when the
- * shell is initialized and again when a shell procedure is spawned.
- */
-
-void
-initvar(void)
-{
- const struct varinit *ip;
- struct var *vp;
- struct var **vpp;
-
- for (ip = varinit ; (vp = ip->var) != NULL ; ip++) {
- if (find_var(ip->text, &vpp, &vp->name_len) != NULL)
- continue;
- vp->next = *vpp;
- *vpp = vp;
- vp->text = strdup(ip->text);
- vp->flags = ip->flags;
- vp->func = ip->func;
- }
- /*
- * PS1 depends on uid
- */
- if (find_var("PS1", &vpp, &vps1.name_len) == NULL) {
- vps1.next = *vpp;
- *vpp = &vps1;
- vps1.text = strdup(geteuid() ? "PS1=$ " : "PS1=# ");
- vps1.flags = VSTRFIXED|VTEXTFIXED;
- }
-}
-
-/*
- * Safe version of setvar, returns 1 on success 0 on failure.
- */
-
-int
-setvarsafe(const char *name, const char *val, int flags)
-{
- struct jmploc jmploc;
- struct jmploc *volatile savehandler = handler;
- int err = 0;
-#ifdef __GNUC__
- (void) &err;
-#endif
-
- if (setjmp(jmploc.loc))
- err = 1;
- else {
- handler = &jmploc;
- setvar(name, val, flags);
- }
- handler = savehandler;
- return err;
-}
-
-/*
- * Set the value of a variable. The flags argument is ored with the
- * flags of the variable. If val is NULL, the variable is unset.
- */
-
-void
-setvar(const char *name, const char *val, int flags)
-{
- const char *p;
- const char *q;
- char *d;
- int len;
- int namelen;
- char *nameeq;
- int isbad;
-
- isbad = 0;
- p = name;
- if (! is_name(*p))
- isbad = 1;
- p++;
- for (;;) {
- if (! is_in_name(*p)) {
- if (*p == '\0' || *p == '=')
- break;
- isbad = 1;
- }
- p++;
- }
- namelen = p - name;
- if (isbad)
- error("%.*s: bad variable name", namelen, name);
- len = namelen + 2; /* 2 is space for '=' and '\0' */
- if (val == NULL) {
- flags |= VUNSET;
- } else {
- len += strlen(val);
- }
- d = nameeq = ckmalloc(len);
- q = name;
- while (--namelen >= 0)
- *d++ = *q++;
- *d++ = '=';
- *d = '\0';
- if (val)
- scopy(val, d);
- setvareq(nameeq, flags);
-}
-
-
-
-/*
- * Same as setvar except that the variable and value are passed in
- * the first argument as name=value. Since the first argument will
- * be actually stored in the table, it should not be a string that
- * will go away.
- */
-
-void
-setvareq(char *s, int flags)
-{
- struct var *vp, **vpp;
- int nlen;
-
- if (aflag)
- flags |= VEXPORT;
- vp = find_var(s, &vpp, &nlen);
- if (vp != NULL) {
- if (vp->flags & VREADONLY)
- error("%.*s: is read only", vp->name_len, s);
- if (flags & VNOSET)
- return;
- INTOFF;
-
- if (vp->func && (flags & VNOFUNC) == 0)
- (*vp->func)(s + vp->name_len + 1);
-
- if ((vp->flags & (VTEXTFIXED|VSTACK)) == 0)
- ckfree(vp->text);
-
- vp->flags &= ~(VTEXTFIXED|VSTACK|VUNSET);
- vp->flags |= flags & ~VNOFUNC;
- vp->text = s;
-
- INTON;
- return;
- }
- /* not found */
- if (flags & VNOSET)
- return;
- vp = ckmalloc(sizeof (*vp));
- vp->flags = flags & ~VNOFUNC;
- vp->text = s;
- vp->name_len = nlen;
- vp->next = *vpp;
- vp->func = NULL;
- *vpp = vp;
-}
-
-
-
-/*
- * Process a linked list of variable assignments.
- */
-
-void
-listsetvar(struct strlist *list, int flags)
-{
- struct strlist *lp;
-
- INTOFF;
- for (lp = list ; lp ; lp = lp->next) {
- setvareq(savestr(lp->text), flags);
- }
- INTON;
-}
-
-void
-listmklocal(struct strlist *list, int flags)
-{
- struct strlist *lp;
-
- for (lp = list ; lp ; lp = lp->next)
- mklocal(lp->text, flags);
-}
-
-
-/*
- * Find the value of a variable. Returns NULL if not set.
- */
-
-char *
-lookupvar(const char *name)
-{
- struct var *v;
-
- v = find_var(name, NULL, NULL);
- if (v == NULL || v->flags & VUNSET)
- return NULL;
- return v->text + v->name_len + 1;
-}
-
-
-
-/*
- * Search the environment of a builtin command. If the second argument
- * is nonzero, return the value of a variable even if it hasn't been
- * exported.
- */
-
-char *
-bltinlookup(const char *name, int doall)
-{
- struct strlist *sp;
- struct var *v;
-
- for (sp = cmdenviron ; sp ; sp = sp->next) {
- if (strequal(sp->text, name))
- return strchr(sp->text, '=') + 1;
- }
-
- v = find_var(name, NULL, NULL);
-
- if (v == NULL || v->flags & VUNSET || (!doall && !(v->flags & VEXPORT)))
- return NULL;
- return v->text + v->name_len + 1;
-}
-
-
-
-/*
- * Generate a list of exported variables. This routine is used to construct
- * the third argument to execve when executing a program.
- */
-
-char **
-environment(void)
-{
- int nenv;
- struct var **vpp;
- struct var *vp;
- char **env;
- char **ep;
-
- nenv = 0;
- for (vpp = vartab ; vpp < vartab + VTABSIZE ; vpp++) {
- for (vp = *vpp ; vp ; vp = vp->next)
- if (vp->flags & VEXPORT)
- nenv++;
- }
- ep = env = stalloc((nenv + 1) * sizeof *env);
- for (vpp = vartab ; vpp < vartab + VTABSIZE ; vpp++) {
- for (vp = *vpp ; vp ; vp = vp->next)
- if (vp->flags & VEXPORT)
- *ep++ = vp->text;
- }
- *ep = NULL;
- return env;
-}
-
-
-/*
- * Called when a shell procedure is invoked to clear out nonexported
- * variables. It is also necessary to reallocate variables of with
- * VSTACK set since these are currently allocated on the stack.
- */
-
-#ifdef mkinit
-void shprocvar(void);
-
-SHELLPROC {
- shprocvar();
-}
-#endif
-
-void
-shprocvar(void)
-{
- struct var **vpp;
- struct var *vp, **prev;
-
- for (vpp = vartab ; vpp < vartab + VTABSIZE ; vpp++) {
- for (prev = vpp ; (vp = *prev) != NULL ; ) {
- if ((vp->flags & VEXPORT) == 0) {
- *prev = vp->next;
- if ((vp->flags & VTEXTFIXED) == 0)
- ckfree(vp->text);
- if ((vp->flags & VSTRFIXED) == 0)
- ckfree(vp);
- } else {
- if (vp->flags & VSTACK) {
- vp->text = savestr(vp->text);
- vp->flags &=~ VSTACK;
- }
- prev = &vp->next;
- }
- }
- }
- initvar();
-}
-
-
-
-/*
- * Command to list all variables which are set. Currently this command
- * is invoked from the set command when the set command is called without
- * any variables.
- */
-
-void
-print_quoted(const char *p)
-{
- const char *q;
-
- if (strcspn(p, "|&;<>()$`\\\"' \t\n*?[]#~=%") == strlen(p)) {
- out1fmt("%s", p);
- return;
- }
- while (*p) {
- if (*p == '\'') {
- out1fmt("\\'");
- p++;
- continue;
- }
- q = index(p, '\'');
- if (!q) {
- out1fmt("'%s'", p );
- return;
- }
- out1fmt("'%.*s'", (int)(q - p), p );
- p = q;
- }
-}
-
-static int
-sort_var(const void *v_v1, const void *v_v2)
-{
- const struct var * const *v1 = v_v1;
- const struct var * const *v2 = v_v2;
-
- /* XXX Will anyone notice we include the '=' of the shorter name? */
- return strcmp((*v1)->text, (*v2)->text);
-}
-
-/*
- * POSIX requires that 'set' (but not export or readonly) output the
- * variables in lexicographic order - by the locale's collating order (sigh).
- * Maybe we could keep them in an ordered balanced binary tree
- * instead of hashed lists.
- * For now just roll 'em through qsort for printing...
- */
-
-int
-showvars(const char *name, int flag, int show_value)
-{
- struct var **vpp;
- struct var *vp;
- const char *p;
-
- static struct var **list; /* static in case we are interrupted */
- static int list_len;
- int count = 0;
-
- if (!list) {
- list_len = 32;
- list = ckmalloc(list_len * sizeof *list);
- }
-
- for (vpp = vartab ; vpp < vartab + VTABSIZE ; vpp++) {
- for (vp = *vpp ; vp ; vp = vp->next) {
- if (flag && !(vp->flags & flag))
- continue;
- if (vp->flags & VUNSET && !(show_value & 2))
- continue;
- if (count >= list_len) {
- list = ckrealloc(list,
- (list_len << 1) * sizeof *list);
- list_len <<= 1;
- }
- list[count++] = vp;
- }
- }
-
- qsort(list, count, sizeof *list, sort_var);
-
- for (vpp = list; count--; vpp++) {
- vp = *vpp;
- if (name)
- out1fmt("%s ", name);
- for (p = vp->text ; *p != '=' ; p++)
- out1c(*p);
- if (!(vp->flags & VUNSET) && show_value) {
- out1fmt("=");
- print_quoted(++p);
- }
- out1c('\n');
- }
- return 0;
-}
-
-
-
-/*
- * The export and readonly commands.
- */
-
-int
-exportcmd(int argc, char **argv)
-{
- struct var *vp;
- char *name;
- const char *p;
- int flag = argv[0][0] == 'r'? VREADONLY : VEXPORT;
- int pflag;
-
- pflag = nextopt("p") == 'p' ? 3 : 0;
- if (argc <= 1 || pflag) {
- showvars( pflag ? argv[0] : 0, flag, pflag );
- return 0;
- }
-
- while ((name = *argptr++) != NULL) {
- if ((p = strchr(name, '=')) != NULL) {
- p++;
- } else {
- vp = find_var(name, NULL, NULL);
- if (vp != NULL) {
- vp->flags |= flag;
- continue;
- }
- }
- setvar(name, p, flag);
- }
- return 0;
-}
-
-
-/*
- * The "local" command.
- */
-
-int
-localcmd(int argc, char **argv)
-{
- char *name;
-
- if (! in_function())
- error("Not in a function");
- while ((name = *argptr++) != NULL) {
- mklocal(name, 0);
- }
- return 0;
-}
-
-
-/*
- * Make a variable a local variable. When a variable is made local, it's
- * value and flags are saved in a localvar structure. The saved values
- * will be restored when the shell function returns. We handle the name
- * "-" as a special case.
- */
-
-void
-mklocal(const char *name, int flags)
-{
- struct localvar *lvp;
- struct var **vpp;
- struct var *vp;
-
- INTOFF;
- lvp = ckmalloc(sizeof (struct localvar));
- if (name[0] == '-' && name[1] == '\0') {
- char *p;
- p = ckmalloc(sizeof_optlist);
- lvp->text = memcpy(p, optlist, sizeof_optlist);
- vp = NULL;
- } else {
- vp = find_var(name, &vpp, NULL);
- if (vp == NULL) {
- if (strchr(name, '='))
- setvareq(savestr(name), VSTRFIXED|flags);
- else
- setvar(name, NULL, VSTRFIXED|flags);
- vp = *vpp; /* the new variable */
- lvp->text = NULL;
- lvp->flags = VUNSET;
- } else {
- lvp->text = vp->text;
- lvp->flags = vp->flags;
- vp->flags |= VSTRFIXED|VTEXTFIXED;
- if (name[vp->name_len] == '=')
- setvareq(savestr(name), flags);
- }
- }
- lvp->vp = vp;
- lvp->next = localvars;
- localvars = lvp;
- INTON;
-}
-
-
-/*
- * Called after a function returns.
- */
-
-void
-poplocalvars(void)
-{
- struct localvar *lvp;
- struct var *vp;
-
- while ((lvp = localvars) != NULL) {
- localvars = lvp->next;
- vp = lvp->vp;
- TRACE(("poplocalvar %s", vp ? vp->text : "-"));
- if (vp == NULL) { /* $- saved */
- memcpy(optlist, lvp->text, sizeof_optlist);
- ckfree(lvp->text);
- } else if ((lvp->flags & (VUNSET|VSTRFIXED)) == VUNSET) {
- (void)unsetvar(vp->text, 0);
- } else {
- if (vp->func && (vp->flags & VNOFUNC) == 0)
- (*vp->func)(lvp->text + vp->name_len + 1);
- if ((vp->flags & VTEXTFIXED) == 0)
- ckfree(vp->text);
- vp->flags = lvp->flags;
- vp->text = lvp->text;
- }
- ckfree(lvp);
- }
-}
-
-
-int
-setvarcmd(int argc, char **argv)
-{
- if (argc <= 2)
- return unsetcmd(argc, argv);
- else if (argc == 3)
- setvar(argv[1], argv[2], 0);
- else
- error("List assignment not implemented");
- return 0;
-}
-
-
-/*
- * The unset builtin command. We unset the function before we unset the
- * variable to allow a function to be unset when there is a readonly variable
- * with the same name.
- */
-
-int
-unsetcmd(int argc, char **argv)
-{
- char **ap;
- int i;
- int flg_func = 0;
- int flg_var = 0;
- int ret = 0;
-
- while ((i = nextopt("evf")) != '\0') {
- if (i == 'f')
- flg_func = 1;
- else
- flg_var = i;
- }
- if (flg_func == 0 && flg_var == 0)
- flg_var = 1;
-
- for (ap = argptr; *ap ; ap++) {
- if (flg_func)
- ret |= unsetfunc(*ap);
- if (flg_var)
- ret |= unsetvar(*ap, flg_var == 'e');
- }
- return ret;
-}
-
-
-/*
- * Unset the specified variable.
- */
-
-int
-unsetvar(const char *s, int unexport)
-{
- struct var **vpp;
- struct var *vp;
-
- vp = find_var(s, &vpp, NULL);
- if (vp == NULL)
- return 1;
-
- if (vp->flags & VREADONLY)
- return (1);
-
- INTOFF;
- if (unexport) {
- vp->flags &= ~VEXPORT;
- } else {
- if (vp->text[vp->name_len + 1] != '\0')
- setvar(s, nullstr, 0);
- vp->flags &= ~VEXPORT;
- vp->flags |= VUNSET;
- if ((vp->flags & VSTRFIXED) == 0) {
- if ((vp->flags & VTEXTFIXED) == 0)
- ckfree(vp->text);
- *vpp = vp->next;
- ckfree(vp);
- }
- }
- INTON;
- return 0;
-}
-
-
-/*
- * Returns true if the two strings specify the same varable. The first
- * variable name is terminated by '='; the second may be terminated by
- * either '=' or '\0'.
- */
-
-STATIC int
-strequal(const char *p, const char *q)
-{
- while (*p == *q++) {
- if (*p++ == '=')
- return 1;
- }
- if (*p == '=' && *(q - 1) == '\0')
- return 1;
- return 0;
-}
-
-/*
- * Search for a variable.
- * 'name' may be terminated by '=' or a NUL.
- * vppp is set to the pointer to vp, or the list head if vp isn't found
- * lenp is set to the number of charactets in 'name'
- */
-
-STATIC struct var *
-find_var(const char *name, struct var ***vppp, int *lenp)
-{
- unsigned int hashval;
- int len;
- struct var *vp, **vpp;
- const char *p = name;
-
- hashval = 0;
- while (*p && *p != '=')
- hashval = 2 * hashval + (unsigned char)*p++;
- len = p - name;
-
- if (lenp)
- *lenp = len;
- vpp = &vartab[hashval % VTABSIZE];
- if (vppp)
- *vppp = vpp;
-
- for (vp = *vpp ; vp ; vpp = &vp->next, vp = *vpp) {
- if (vp->name_len != len)
- continue;
- if (memcmp(vp->text, name, len) != 0)
- continue;
- if (vppp)
- *vppp = vpp;
- return vp;
- }
- return NULL;
-}
diff --git a/sh/var.h b/sh/var.h
deleted file mode 100644
index b7b7db8..0000000
--- a/sh/var.h
+++ /dev/null
@@ -1,131 +0,0 @@
-/* $NetBSD: var.h,v 1.23 2004/10/02 12:16:53 dsl Exp $ */
-
-/*-
- * Copyright (c) 1991, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Kenneth Almquist.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * @(#)var.h 8.2 (Berkeley) 5/4/95
- */
-
-/*
- * Shell variables.
- */
-
-/* flags */
-#define VEXPORT 0x01 /* variable is exported */
-#define VREADONLY 0x02 /* variable cannot be modified */
-#define VSTRFIXED 0x04 /* variable struct is statically allocated */
-#define VTEXTFIXED 0x08 /* text is statically allocated */
-#define VSTACK 0x10 /* text is allocated on the stack */
-#define VUNSET 0x20 /* the variable is not set */
-#define VNOFUNC 0x40 /* don't call the callback function */
-#define VNOSET 0x80 /* do not set variable - just readonly test */
-
-
-struct var {
- struct var *next; /* next entry in hash list */
- int flags; /* flags are defined above */
- char *text; /* name=value */
- int name_len; /* length of name */
- void (*func)(const char *);
- /* function to be called when */
- /* the variable gets set/unset */
-};
-
-
-struct localvar {
- struct localvar *next; /* next local variable in list */
- struct var *vp; /* the variable that was made local */
- int flags; /* saved flags */
- char *text; /* saved text */
-};
-
-
-struct localvar *localvars;
-
-#if ATTY
-extern struct var vatty;
-#endif
-extern struct var vifs;
-extern struct var vmpath;
-extern struct var vpath;
-extern struct var vps1;
-extern struct var vps2;
-extern struct var vps4;
-#ifdef WITH_HISTORY
-extern struct var vterm;
-extern struct var vtermcap;
-extern struct var vhistsize;
-#endif
-
-/*
- * The following macros access the values of the above variables.
- * They have to skip over the name. They return the null string
- * for unset variables.
- */
-
-#define ifsval() (vifs.text + 4)
-#define ifsset() ((vifs.flags & VUNSET) == 0)
-#define mpathval() (vmpath.text + 9)
-#define pathval() (vpath.text + 5)
-#define ps1val() (vps1.text + 4)
-#define ps2val() (vps2.text + 4)
-#define ps4val() (vps4.text + 4)
-#define optindval() (voptind.text + 7)
-#ifdef WITH_HISTORY
-#define histsizeval() (vhistsize.text + 9)
-#define termval() (vterm.text + 5)
-#endif
-
-#if ATTY
-#define attyset() ((vatty.flags & VUNSET) == 0)
-#endif
-#define mpathset() ((vmpath.flags & VUNSET) == 0)
-
-void initvar(void);
-void setvar(const char *, const char *, int);
-void setvareq(char *, int);
-struct strlist;
-void listsetvar(struct strlist *, int);
-char *lookupvar(const char *);
-char *bltinlookup(const char *, int);
-char **environment(void);
-void shprocvar(void);
-int showvars(const char *, int, int);
-int exportcmd(int, char **);
-int localcmd(int, char **);
-void mklocal(const char *, int);
-void listmklocal(struct strlist *, int);
-void poplocalvars(void);
-int setvarcmd(int, char **);
-int unsetcmd(int, char **);
-int unsetvar(const char *, int);
-int setvarsafe(const char *, const char *, int);
-void print_quoted(const char *);