The Android Open Source Project | cbb1011 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2005 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | #ifndef ANDROID_STRING8_H |
| 18 | #define ANDROID_STRING8_H |
| 19 | |
| 20 | #include <utils/Errors.h> |
Kenny Root | ba0165b | 2010-11-09 14:37:23 -0800 | [diff] [blame] | 21 | #include <utils/SharedBuffer.h> |
| 22 | #include <utils/Unicode.h> |
Jeff Brown | 9a0a76d | 2012-03-16 14:45:49 -0700 | [diff] [blame] | 23 | #include <utils/TypeHelpers.h> |
The Android Open Source Project | cbb1011 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 24 | |
Kenny Root | ba0165b | 2010-11-09 14:37:23 -0800 | [diff] [blame] | 25 | #include <string.h> // for strcmp |
Jeff Brown | 647925d | 2010-11-10 16:03:06 -0800 | [diff] [blame] | 26 | #include <stdarg.h> |
Daisuke Miyakawa | 44dad3e | 2009-06-30 20:40:42 +0900 | [diff] [blame] | 27 | |
| 28 | // --------------------------------------------------------------------------- |
| 29 | |
The Android Open Source Project | cbb1011 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 30 | namespace android { |
| 31 | |
Kenny Root | ba0165b | 2010-11-09 14:37:23 -0800 | [diff] [blame] | 32 | class String16; |
The Android Open Source Project | cbb1011 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 33 | class TextOutput; |
| 34 | |
Daisuke Miyakawa | 44dad3e | 2009-06-30 20:40:42 +0900 | [diff] [blame] | 35 | //! This is a string holding UTF-8 characters. Does not allow the value more |
| 36 | // than 0x10FFFF, which is not valid unicode codepoint. |
The Android Open Source Project | cbb1011 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 37 | class String8 |
| 38 | { |
| 39 | public: |
Mathias Agopian | 4485d0d | 2013-05-08 16:04:13 -0700 | [diff] [blame] | 40 | /* use String8(StaticLinkage) if you're statically linking against |
| 41 | * libutils and declaring an empty static String8, e.g.: |
| 42 | * |
| 43 | * static String8 sAStaticEmptyString(String8::kEmptyString); |
| 44 | * static String8 sAnotherStaticEmptyString(sAStaticEmptyString); |
| 45 | */ |
| 46 | enum StaticLinkage { kEmptyString }; |
| 47 | |
The Android Open Source Project | cbb1011 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 48 | String8(); |
Mathias Agopian | 4485d0d | 2013-05-08 16:04:13 -0700 | [diff] [blame] | 49 | explicit String8(StaticLinkage); |
The Android Open Source Project | cbb1011 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 50 | String8(const String8& o); |
| 51 | explicit String8(const char* o); |
| 52 | explicit String8(const char* o, size_t numChars); |
| 53 | |
| 54 | explicit String8(const String16& o); |
| 55 | explicit String8(const char16_t* o); |
| 56 | explicit String8(const char16_t* o, size_t numChars); |
Daisuke Miyakawa | 44dad3e | 2009-06-30 20:40:42 +0900 | [diff] [blame] | 57 | explicit String8(const char32_t* o); |
| 58 | explicit String8(const char32_t* o, size_t numChars); |
The Android Open Source Project | cbb1011 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 59 | ~String8(); |
Jeff Brown | 1d618d6 | 2010-12-02 13:50:46 -0800 | [diff] [blame] | 60 | |
| 61 | static inline const String8 empty(); |
| 62 | |
| 63 | static String8 format(const char* fmt, ...) __attribute__((format (printf, 1, 2))); |
| 64 | static String8 formatV(const char* fmt, va_list args); |
| 65 | |
The Android Open Source Project | cbb1011 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 66 | inline const char* string() const; |
| 67 | inline size_t size() const; |
| 68 | inline size_t length() const; |
| 69 | inline size_t bytes() const; |
Jeff Brown | 48da31b | 2010-09-12 17:55:08 -0700 | [diff] [blame] | 70 | inline bool isEmpty() const; |
The Android Open Source Project | cbb1011 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 71 | |
| 72 | inline const SharedBuffer* sharedBuffer() const; |
| 73 | |
Jeff Brown | 48da31b | 2010-09-12 17:55:08 -0700 | [diff] [blame] | 74 | void clear(); |
| 75 | |
The Android Open Source Project | cbb1011 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 76 | void setTo(const String8& other); |
| 77 | status_t setTo(const char* other); |
| 78 | status_t setTo(const char* other, size_t numChars); |
| 79 | status_t setTo(const char16_t* other, size_t numChars); |
Daisuke Miyakawa | 44dad3e | 2009-06-30 20:40:42 +0900 | [diff] [blame] | 80 | status_t setTo(const char32_t* other, |
| 81 | size_t length); |
| 82 | |
The Android Open Source Project | cbb1011 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 83 | status_t append(const String8& other); |
| 84 | status_t append(const char* other); |
| 85 | status_t append(const char* other, size_t numChars); |
| 86 | |
Jeff Brown | 38fb25b | 2010-08-11 14:46:32 -0700 | [diff] [blame] | 87 | status_t appendFormat(const char* fmt, ...) |
| 88 | __attribute__((format (printf, 2, 3))); |
Jeff Brown | 647925d | 2010-11-10 16:03:06 -0800 | [diff] [blame] | 89 | status_t appendFormatV(const char* fmt, va_list args); |
Jeff Brown | 35a154e | 2010-07-15 23:54:05 -0700 | [diff] [blame] | 90 | |
Daisuke Miyakawa | 44dad3e | 2009-06-30 20:40:42 +0900 | [diff] [blame] | 91 | // Note that this function takes O(N) time to calculate the value. |
| 92 | // No cache value is stored. |
| 93 | size_t getUtf32Length() const; |
| 94 | int32_t getUtf32At(size_t index, |
| 95 | size_t *next_index) const; |
Kenny Root | ba0165b | 2010-11-09 14:37:23 -0800 | [diff] [blame] | 96 | void getUtf32(char32_t* dst) const; |
Daisuke Miyakawa | 44dad3e | 2009-06-30 20:40:42 +0900 | [diff] [blame] | 97 | |
The Android Open Source Project | cbb1011 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 98 | inline String8& operator=(const String8& other); |
| 99 | inline String8& operator=(const char* other); |
| 100 | |
| 101 | inline String8& operator+=(const String8& other); |
| 102 | inline String8 operator+(const String8& other) const; |
| 103 | |
| 104 | inline String8& operator+=(const char* other); |
| 105 | inline String8 operator+(const char* other) const; |
| 106 | |
| 107 | inline int compare(const String8& other) const; |
| 108 | |
| 109 | inline bool operator<(const String8& other) const; |
| 110 | inline bool operator<=(const String8& other) const; |
| 111 | inline bool operator==(const String8& other) const; |
| 112 | inline bool operator!=(const String8& other) const; |
| 113 | inline bool operator>=(const String8& other) const; |
| 114 | inline bool operator>(const String8& other) const; |
| 115 | |
| 116 | inline bool operator<(const char* other) const; |
| 117 | inline bool operator<=(const char* other) const; |
| 118 | inline bool operator==(const char* other) const; |
| 119 | inline bool operator!=(const char* other) const; |
| 120 | inline bool operator>=(const char* other) const; |
| 121 | inline bool operator>(const char* other) const; |
| 122 | |
| 123 | inline operator const char*() const; |
| 124 | |
| 125 | char* lockBuffer(size_t size); |
| 126 | void unlockBuffer(); |
| 127 | status_t unlockBuffer(size_t size); |
| 128 | |
| 129 | // return the index of the first byte of other in this at or after |
| 130 | // start, or -1 if not found |
| 131 | ssize_t find(const char* other, size_t start = 0) const; |
| 132 | |
| 133 | void toLower(); |
| 134 | void toLower(size_t start, size_t numChars); |
| 135 | void toUpper(); |
| 136 | void toUpper(size_t start, size_t numChars); |
Daisuke Miyakawa | 44dad3e | 2009-06-30 20:40:42 +0900 | [diff] [blame] | 137 | |
The Android Open Source Project | cbb1011 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 138 | /* |
| 139 | * These methods operate on the string as if it were a path name. |
| 140 | */ |
| 141 | |
| 142 | /* |
| 143 | * Set the filename field to a specific value. |
| 144 | * |
| 145 | * Normalizes the filename, removing a trailing '/' if present. |
| 146 | */ |
| 147 | void setPathName(const char* name); |
| 148 | void setPathName(const char* name, size_t numChars); |
| 149 | |
| 150 | /* |
| 151 | * Get just the filename component. |
| 152 | * |
| 153 | * "/tmp/foo/bar.c" --> "bar.c" |
| 154 | */ |
| 155 | String8 getPathLeaf(void) const; |
| 156 | |
| 157 | /* |
| 158 | * Remove the last (file name) component, leaving just the directory |
| 159 | * name. |
| 160 | * |
| 161 | * "/tmp/foo/bar.c" --> "/tmp/foo" |
| 162 | * "/tmp" --> "" // ????? shouldn't this be "/" ???? XXX |
| 163 | * "bar.c" --> "" |
| 164 | */ |
| 165 | String8 getPathDir(void) const; |
| 166 | |
| 167 | /* |
| 168 | * Retrieve the front (root dir) component. Optionally also return the |
| 169 | * remaining components. |
| 170 | * |
| 171 | * "/tmp/foo/bar.c" --> "tmp" (remain = "foo/bar.c") |
| 172 | * "/tmp" --> "tmp" (remain = "") |
| 173 | * "bar.c" --> "bar.c" (remain = "") |
| 174 | */ |
| 175 | String8 walkPath(String8* outRemains = NULL) const; |
| 176 | |
| 177 | /* |
Glenn Kasten | 29d4d20 | 2011-03-14 11:32:29 -0700 | [diff] [blame] | 178 | * Return the filename extension. This is the last '.' and any number |
| 179 | * of characters that follow it. The '.' is included in case we |
The Android Open Source Project | cbb1011 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 180 | * decide to expand our definition of what constitutes an extension. |
| 181 | * |
| 182 | * "/tmp/foo/bar.c" --> ".c" |
| 183 | * "/tmp" --> "" |
| 184 | * "/tmp/foo.bar/baz" --> "" |
| 185 | * "foo.jpeg" --> ".jpeg" |
| 186 | * "foo." --> "" |
| 187 | */ |
| 188 | String8 getPathExtension(void) const; |
| 189 | |
| 190 | /* |
| 191 | * Return the path without the extension. Rules for what constitutes |
| 192 | * an extension are described in the comment for getPathExtension(). |
| 193 | * |
| 194 | * "/tmp/foo/bar.c" --> "/tmp/foo/bar" |
| 195 | */ |
| 196 | String8 getBasePath(void) const; |
| 197 | |
| 198 | /* |
| 199 | * Add a component to the pathname. We guarantee that there is |
| 200 | * exactly one path separator between the old path and the new. |
| 201 | * If there is no existing name, we just copy the new name in. |
| 202 | * |
| 203 | * If leaf is a fully qualified path (i.e. starts with '/', it |
| 204 | * replaces whatever was there before. |
| 205 | */ |
| 206 | String8& appendPath(const char* leaf); |
| 207 | String8& appendPath(const String8& leaf) { return appendPath(leaf.string()); } |
| 208 | |
| 209 | /* |
| 210 | * Like appendPath(), but does not affect this string. Returns a new one instead. |
| 211 | */ |
| 212 | String8 appendPathCopy(const char* leaf) const |
| 213 | { String8 p(*this); p.appendPath(leaf); return p; } |
| 214 | String8 appendPathCopy(const String8& leaf) const { return appendPathCopy(leaf.string()); } |
| 215 | |
| 216 | /* |
| 217 | * Converts all separators in this string to /, the default path separator. |
| 218 | * |
| 219 | * If the default OS separator is backslash, this converts all |
| 220 | * backslashes to slashes, in-place. Otherwise it does nothing. |
| 221 | * Returns self. |
| 222 | */ |
| 223 | String8& convertToResPath(); |
| 224 | |
| 225 | private: |
| 226 | status_t real_append(const char* other, size_t numChars); |
| 227 | char* find_extension(void) const; |
| 228 | |
| 229 | const char* mString; |
| 230 | }; |
| 231 | |
Jeff Brown | 9a0a76d | 2012-03-16 14:45:49 -0700 | [diff] [blame] | 232 | // String8 can be trivially moved using memcpy() because moving does not |
| 233 | // require any change to the underlying SharedBuffer contents or reference count. |
| 234 | ANDROID_TRIVIAL_MOVE_TRAIT(String8) |
| 235 | |
The Android Open Source Project | cbb1011 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 236 | // --------------------------------------------------------------------------- |
| 237 | // No user servicable parts below. |
| 238 | |
| 239 | inline int compare_type(const String8& lhs, const String8& rhs) |
| 240 | { |
| 241 | return lhs.compare(rhs); |
| 242 | } |
| 243 | |
| 244 | inline int strictly_order_type(const String8& lhs, const String8& rhs) |
| 245 | { |
| 246 | return compare_type(lhs, rhs) < 0; |
| 247 | } |
| 248 | |
Jeff Brown | 1d618d6 | 2010-12-02 13:50:46 -0800 | [diff] [blame] | 249 | inline const String8 String8::empty() { |
| 250 | return String8(); |
| 251 | } |
| 252 | |
The Android Open Source Project | cbb1011 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 253 | inline const char* String8::string() const |
| 254 | { |
| 255 | return mString; |
| 256 | } |
| 257 | |
| 258 | inline size_t String8::length() const |
| 259 | { |
| 260 | return SharedBuffer::sizeFromData(mString)-1; |
| 261 | } |
| 262 | |
| 263 | inline size_t String8::size() const |
| 264 | { |
| 265 | return length(); |
| 266 | } |
| 267 | |
Jeff Brown | 48da31b | 2010-09-12 17:55:08 -0700 | [diff] [blame] | 268 | inline bool String8::isEmpty() const |
| 269 | { |
| 270 | return length() == 0; |
| 271 | } |
| 272 | |
The Android Open Source Project | cbb1011 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 273 | inline size_t String8::bytes() const |
| 274 | { |
| 275 | return SharedBuffer::sizeFromData(mString)-1; |
| 276 | } |
| 277 | |
| 278 | inline const SharedBuffer* String8::sharedBuffer() const |
| 279 | { |
| 280 | return SharedBuffer::bufferFromData(mString); |
| 281 | } |
| 282 | |
| 283 | inline String8& String8::operator=(const String8& other) |
| 284 | { |
| 285 | setTo(other); |
| 286 | return *this; |
| 287 | } |
| 288 | |
| 289 | inline String8& String8::operator=(const char* other) |
| 290 | { |
| 291 | setTo(other); |
| 292 | return *this; |
| 293 | } |
| 294 | |
| 295 | inline String8& String8::operator+=(const String8& other) |
| 296 | { |
| 297 | append(other); |
| 298 | return *this; |
| 299 | } |
| 300 | |
| 301 | inline String8 String8::operator+(const String8& other) const |
| 302 | { |
Kenny Root | 23b4a09 | 2010-08-05 16:21:23 -0700 | [diff] [blame] | 303 | String8 tmp(*this); |
The Android Open Source Project | cbb1011 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 304 | tmp += other; |
| 305 | return tmp; |
| 306 | } |
| 307 | |
| 308 | inline String8& String8::operator+=(const char* other) |
| 309 | { |
| 310 | append(other); |
| 311 | return *this; |
| 312 | } |
| 313 | |
| 314 | inline String8 String8::operator+(const char* other) const |
| 315 | { |
Kenny Root | 23b4a09 | 2010-08-05 16:21:23 -0700 | [diff] [blame] | 316 | String8 tmp(*this); |
The Android Open Source Project | cbb1011 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 317 | tmp += other; |
| 318 | return tmp; |
| 319 | } |
| 320 | |
| 321 | inline int String8::compare(const String8& other) const |
| 322 | { |
| 323 | return strcmp(mString, other.mString); |
| 324 | } |
| 325 | |
| 326 | inline bool String8::operator<(const String8& other) const |
| 327 | { |
| 328 | return strcmp(mString, other.mString) < 0; |
| 329 | } |
| 330 | |
| 331 | inline bool String8::operator<=(const String8& other) const |
| 332 | { |
| 333 | return strcmp(mString, other.mString) <= 0; |
| 334 | } |
| 335 | |
| 336 | inline bool String8::operator==(const String8& other) const |
| 337 | { |
Brad Fitzpatrick | 9d589aa | 2010-10-20 17:06:28 -0700 | [diff] [blame] | 338 | return strcmp(mString, other.mString) == 0; |
The Android Open Source Project | cbb1011 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 339 | } |
| 340 | |
| 341 | inline bool String8::operator!=(const String8& other) const |
| 342 | { |
| 343 | return strcmp(mString, other.mString) != 0; |
| 344 | } |
| 345 | |
| 346 | inline bool String8::operator>=(const String8& other) const |
| 347 | { |
| 348 | return strcmp(mString, other.mString) >= 0; |
| 349 | } |
| 350 | |
| 351 | inline bool String8::operator>(const String8& other) const |
| 352 | { |
| 353 | return strcmp(mString, other.mString) > 0; |
| 354 | } |
| 355 | |
| 356 | inline bool String8::operator<(const char* other) const |
| 357 | { |
| 358 | return strcmp(mString, other) < 0; |
| 359 | } |
| 360 | |
| 361 | inline bool String8::operator<=(const char* other) const |
| 362 | { |
| 363 | return strcmp(mString, other) <= 0; |
| 364 | } |
| 365 | |
| 366 | inline bool String8::operator==(const char* other) const |
| 367 | { |
| 368 | return strcmp(mString, other) == 0; |
| 369 | } |
| 370 | |
| 371 | inline bool String8::operator!=(const char* other) const |
| 372 | { |
| 373 | return strcmp(mString, other) != 0; |
| 374 | } |
| 375 | |
| 376 | inline bool String8::operator>=(const char* other) const |
| 377 | { |
| 378 | return strcmp(mString, other) >= 0; |
| 379 | } |
| 380 | |
| 381 | inline bool String8::operator>(const char* other) const |
| 382 | { |
| 383 | return strcmp(mString, other) > 0; |
| 384 | } |
| 385 | |
| 386 | inline String8::operator const char*() const |
| 387 | { |
| 388 | return mString; |
| 389 | } |
| 390 | |
Daisuke Miyakawa | 44dad3e | 2009-06-30 20:40:42 +0900 | [diff] [blame] | 391 | } // namespace android |
The Android Open Source Project | cbb1011 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 392 | |
| 393 | // --------------------------------------------------------------------------- |
| 394 | |
| 395 | #endif // ANDROID_STRING8_H |