The Tor Browser / file comparison
comparison: xpcom/glue/nsStringAPI.cpp
xpcom/glue/nsStringAPI.cpp
- branch
- TOR_BUG_9701
- changeset 8
- 97036ab72558
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| -1:000000000000 | 0:d25cbd35f7a8 |
|---|---|
| 1 /* vim:set ts=2 sw=2 et cindent: */ | |
| 2 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 3 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 5 | |
| 6 #include "nscore.h" | |
| 7 #include "nsCRTGlue.h" | |
| 8 #include "prprf.h" | |
| 9 #include "nsStringAPI.h" | |
| 10 #include "nsXPCOMStrings.h" | |
| 11 #include "nsDebug.h" | |
| 12 | |
| 13 #include <stdio.h> | |
| 14 | |
| 15 #ifdef XP_WIN | |
| 16 #define snprintf _snprintf | |
| 17 #endif | |
| 18 | |
| 19 // nsAString | |
| 20 | |
| 21 uint32_t | |
| 22 nsAString::BeginReading(const char_type **begin, const char_type **end) const | |
| 23 { | |
| 24 uint32_t len = NS_StringGetData(*this, begin); | |
| 25 if (end) | |
| 26 *end = *begin + len; | |
| 27 | |
| 28 return len; | |
| 29 } | |
| 30 | |
| 31 const nsAString::char_type* | |
| 32 nsAString::BeginReading() const | |
| 33 { | |
| 34 const char_type *data; | |
| 35 NS_StringGetData(*this, &data); | |
| 36 return data; | |
| 37 } | |
| 38 | |
| 39 const nsAString::char_type* | |
| 40 nsAString::EndReading() const | |
| 41 { | |
| 42 const char_type *data; | |
| 43 uint32_t len = NS_StringGetData(*this, &data); | |
| 44 return data + len; | |
| 45 } | |
| 46 | |
| 47 uint32_t | |
| 48 nsAString::BeginWriting(char_type **begin, char_type **end, uint32_t newSize) | |
| 49 { | |
| 50 uint32_t len = NS_StringGetMutableData(*this, newSize, begin); | |
| 51 if (end) | |
| 52 *end = *begin + len; | |
| 53 | |
| 54 return len; | |
| 55 } | |
| 56 | |
| 57 nsAString::char_type* | |
| 58 nsAString::BeginWriting(uint32_t aLen) | |
| 59 { | |
| 60 char_type *data; | |
| 61 NS_StringGetMutableData(*this, aLen, &data); | |
| 62 return data; | |
| 63 } | |
| 64 | |
| 65 nsAString::char_type* | |
| 66 nsAString::EndWriting() | |
| 67 { | |
| 68 char_type *data; | |
| 69 uint32_t len = NS_StringGetMutableData(*this, UINT32_MAX, &data); | |
| 70 return data + len; | |
| 71 } | |
| 72 | |
| 73 bool | |
| 74 nsAString::SetLength(uint32_t aLen) | |
| 75 { | |
| 76 char_type *data; | |
| 77 NS_StringGetMutableData(*this, aLen, &data); | |
| 78 return data != nullptr; | |
| 79 } | |
| 80 | |
| 81 void | |
| 82 nsAString::AssignLiteral(const char *aStr) | |
| 83 { | |
| 84 uint32_t len = strlen(aStr); | |
| 85 char16_t *buf = BeginWriting(len); | |
| 86 if (!buf) | |
| 87 return; | |
| 88 | |
| 89 for (; *aStr; ++aStr, ++buf) | |
| 90 *buf = *aStr; | |
| 91 } | |
| 92 | |
| 93 void | |
| 94 nsAString::AppendLiteral(const char *aASCIIStr) | |
| 95 { | |
| 96 uint32_t appendLen = strlen(aASCIIStr); | |
| 97 | |
| 98 uint32_t thisLen = Length(); | |
| 99 char16_t *begin, *end; | |
| 100 BeginWriting(&begin, &end, appendLen + thisLen); | |
| 101 if (!begin) | |
| 102 return; | |
| 103 | |
| 104 for (begin += thisLen; begin < end; ++begin, ++aASCIIStr) | |
| 105 *begin = *aASCIIStr; | |
| 106 } | |
| 107 | |
| 108 void | |
| 109 nsAString::StripChars(const char *aSet) | |
| 110 { | |
| 111 nsString copy(*this); | |
| 112 | |
| 113 const char_type *source, *sourceEnd; | |
| 114 copy.BeginReading(&source, &sourceEnd); | |
| 115 | |
| 116 char_type *dest; | |
| 117 BeginWriting(&dest); | |
| 118 if (!dest) | |
| 119 return; | |
| 120 | |
| 121 char_type *curDest = dest; | |
| 122 | |
| 123 for (; source < sourceEnd; ++source) { | |
| 124 const char *test; | |
| 125 for (test = aSet; *test; ++test) { | |
| 126 if (*source == char_type(*test)) | |
| 127 break; | |
| 128 } | |
| 129 | |
| 130 if (!*test) { | |
| 131 // not stripped, copy this char | |
| 132 *curDest = *source; | |
| 133 ++curDest; | |
| 134 } | |
| 135 } | |
| 136 | |
| 137 SetLength(curDest - dest); | |
| 138 } | |
| 139 | |
| 140 void | |
| 141 nsAString::Trim(const char *aSet, bool aLeading, bool aTrailing) | |
| 142 { | |
| 143 NS_ASSERTION(aLeading || aTrailing, "Ineffective Trim"); | |
| 144 | |
| 145 const char16_t *start, *end; | |
| 146 uint32_t cutLen; | |
| 147 | |
| 148 if (aLeading) { | |
| 149 BeginReading(&start, &end); | |
| 150 for (cutLen = 0; start < end; ++start, ++cutLen) { | |
| 151 const char *test; | |
| 152 for (test = aSet; *test; ++test) { | |
| 153 if (*test == *start) | |
| 154 break; | |
| 155 } | |
| 156 if (!*test) | |
| 157 break; | |
| 158 } | |
| 159 if (cutLen) { | |
| 160 NS_StringCutData(*this, 0, cutLen); | |
| 161 } | |
| 162 } | |
| 163 if (aTrailing) { | |
| 164 uint32_t len = BeginReading(&start, &end); | |
| 165 --end; | |
| 166 for (cutLen = 0; end >= start; --end, ++cutLen) { | |
| 167 const char *test; | |
| 168 for (test = aSet; *test; ++test) { | |
| 169 if (*test == *end) | |
| 170 break; | |
| 171 } | |
| 172 if (!*test) | |
| 173 break; | |
| 174 } | |
| 175 if (cutLen) { | |
| 176 NS_StringCutData(*this, len - cutLen, cutLen); | |
| 177 } | |
| 178 } | |
| 179 } | |
| 180 | |
| 181 int32_t | |
| 182 nsAString::DefaultComparator(const char_type *a, const char_type *b, | |
| 183 uint32_t len) | |
| 184 { | |
| 185 for (const char_type *end = a + len; a < end; ++a, ++b) { | |
| 186 if (*a == *b) | |
| 187 continue; | |
| 188 | |
| 189 return *a < *b ? -1 : 1; | |
| 190 } | |
| 191 | |
| 192 return 0; | |
| 193 } | |
| 194 | |
| 195 int32_t | |
| 196 nsAString::Compare(const char_type *other, ComparatorFunc c) const | |
| 197 { | |
| 198 const char_type *cself; | |
| 199 uint32_t selflen = NS_StringGetData(*this, &cself); | |
| 200 uint32_t otherlen = NS_strlen(other); | |
| 201 uint32_t comparelen = selflen <= otherlen ? selflen : otherlen; | |
| 202 | |
| 203 int32_t result = c(cself, other, comparelen); | |
| 204 if (result == 0) { | |
| 205 if (selflen < otherlen) | |
| 206 return -1; | |
| 207 else if (selflen > otherlen) | |
| 208 return 1; | |
| 209 } | |
| 210 return result; | |
| 211 } | |
| 212 | |
| 213 int32_t | |
| 214 nsAString::Compare(const self_type &other, ComparatorFunc c) const | |
| 215 { | |
| 216 const char_type *cself, *cother; | |
| 217 uint32_t selflen = NS_StringGetData(*this, &cself); | |
| 218 uint32_t otherlen = NS_StringGetData(other, &cother); | |
| 219 uint32_t comparelen = selflen <= otherlen ? selflen : otherlen; | |
| 220 | |
| 221 int32_t result = c(cself, cother, comparelen); | |
| 222 if (result == 0) { | |
| 223 if (selflen < otherlen) | |
| 224 return -1; | |
| 225 else if (selflen > otherlen) | |
| 226 return 1; | |
| 227 } | |
| 228 return result; | |
| 229 } | |
| 230 | |
| 231 bool | |
| 232 nsAString::Equals(const char_type *other, ComparatorFunc c) const | |
| 233 { | |
| 234 const char_type *cself; | |
| 235 uint32_t selflen = NS_StringGetData(*this, &cself); | |
| 236 uint32_t otherlen = NS_strlen(other); | |
| 237 | |
| 238 if (selflen != otherlen) | |
| 239 return false; | |
| 240 | |
| 241 return c(cself, other, selflen) == 0; | |
| 242 } | |
| 243 | |
| 244 bool | |
| 245 nsAString::Equals(const self_type &other, ComparatorFunc c) const | |
| 246 { | |
| 247 const char_type *cself; | |
| 248 const char_type *cother; | |
| 249 uint32_t selflen = NS_StringGetData(*this, &cself); | |
| 250 uint32_t otherlen = NS_StringGetData(other, &cother); | |
| 251 | |
| 252 if (selflen != otherlen) | |
| 253 return false; | |
| 254 | |
| 255 return c(cself, cother, selflen) == 0; | |
| 256 } | |
| 257 | |
| 258 bool | |
| 259 nsAString::EqualsLiteral(const char *aASCIIString) const | |
| 260 { | |
| 261 const char16_t *begin, *end; | |
| 262 BeginReading(&begin, &end); | |
| 263 | |
| 264 for (; begin < end; ++begin, ++aASCIIString) { | |
| 265 if (!*aASCIIString || !NS_IsAscii(*begin) || | |
| 266 (char) *begin != *aASCIIString) { | |
| 267 return false; | |
| 268 } | |
| 269 } | |
| 270 | |
| 271 return *aASCIIString == '\0'; | |
| 272 } | |
| 273 | |
| 274 bool | |
| 275 nsAString::LowerCaseEqualsLiteral(const char *aASCIIString) const | |
| 276 { | |
| 277 const char16_t *begin, *end; | |
| 278 BeginReading(&begin, &end); | |
| 279 | |
| 280 for (; begin < end; ++begin, ++aASCIIString) { | |
| 281 if (!*aASCIIString || !NS_IsAscii(*begin) || | |
| 282 NS_ToLower((char) *begin) != *aASCIIString) { | |
| 283 return false; | |
| 284 } | |
| 285 } | |
| 286 | |
| 287 return *aASCIIString == '\0'; | |
| 288 } | |
| 289 | |
| 290 int32_t | |
| 291 nsAString::Find(const self_type& aStr, uint32_t aOffset, | |
| 292 ComparatorFunc c) const | |
| 293 { | |
| 294 const char_type *begin, *end; | |
| 295 uint32_t selflen = BeginReading(&begin, &end); | |
| 296 | |
| 297 if (aOffset > selflen) | |
| 298 return -1; | |
| 299 | |
| 300 const char_type *other; | |
| 301 uint32_t otherlen = aStr.BeginReading(&other); | |
| 302 | |
| 303 if (otherlen > selflen - aOffset) | |
| 304 return -1; | |
| 305 | |
| 306 // We want to stop searching otherlen characters before the end of the string | |
| 307 end -= otherlen; | |
| 308 | |
| 309 for (const char_type *cur = begin + aOffset; cur <= end; ++cur) { | |
| 310 if (!c(cur, other, otherlen)) | |
| 311 return cur - begin; | |
| 312 } | |
| 313 return -1; | |
| 314 } | |
| 315 | |
| 316 static bool ns_strnmatch(const char16_t *aStr, const char* aSubstring, | |
| 317 uint32_t aLen) | |
| 318 { | |
| 319 for (; aLen; ++aStr, ++aSubstring, --aLen) { | |
| 320 if (!NS_IsAscii(*aStr)) | |
| 321 return false; | |
| 322 | |
| 323 if ((char) *aStr != *aSubstring) | |
| 324 return false; | |
| 325 } | |
| 326 | |
| 327 return true; | |
| 328 } | |
| 329 | |
| 330 static bool ns_strnimatch(const char16_t *aStr, const char* aSubstring, | |
| 331 uint32_t aLen) | |
| 332 { | |
| 333 for (; aLen; ++aStr, ++aSubstring, --aLen) { | |
| 334 if (!NS_IsAscii(*aStr)) | |
| 335 return false; | |
| 336 | |
| 337 if (NS_ToLower((char) *aStr) != NS_ToLower(*aSubstring)) | |
| 338 return false; | |
| 339 } | |
| 340 | |
| 341 return true; | |
| 342 } | |
| 343 | |
| 344 int32_t | |
| 345 nsAString::Find(const char *aStr, uint32_t aOffset, bool aIgnoreCase) const | |
| 346 { | |
| 347 bool (*match)(const char16_t*, const char*, uint32_t) = | |
| 348 aIgnoreCase ? ns_strnimatch : ns_strnmatch; | |
| 349 | |
| 350 const char_type *begin, *end; | |
| 351 uint32_t selflen = BeginReading(&begin, &end); | |
| 352 | |
| 353 if (aOffset > selflen) | |
| 354 return -1; | |
| 355 | |
| 356 uint32_t otherlen = strlen(aStr); | |
| 357 | |
| 358 if (otherlen > selflen - aOffset) | |
| 359 return -1; | |
| 360 | |
| 361 // We want to stop searching otherlen characters before the end of the string | |
| 362 end -= otherlen; | |
| 363 | |
| 364 for (const char_type *cur = begin + aOffset; cur <= end; ++cur) { | |
| 365 if (match(cur, aStr, otherlen)) { | |
| 366 return cur - begin; | |
| 367 } | |
| 368 } | |
| 369 return -1; | |
| 370 } | |
| 371 | |
| 372 int32_t | |
| 373 nsAString::RFind(const self_type& aStr, int32_t aOffset, ComparatorFunc c) const | |
| 374 { | |
| 375 const char_type *begin, *end; | |
| 376 uint32_t selflen = BeginReading(&begin, &end); | |
| 377 | |
| 378 const char_type *other; | |
| 379 uint32_t otherlen = aStr.BeginReading(&other); | |
| 380 | |
| 381 if (selflen < otherlen) | |
| 382 return -1; | |
| 383 | |
| 384 if (aOffset < 0 || uint32_t(aOffset) > (selflen - otherlen)) | |
| 385 end -= otherlen; | |
| 386 else | |
| 387 end = begin + aOffset; | |
| 388 | |
| 389 for (const char_type *cur = end; cur >= begin; --cur) { | |
| 390 if (!c(cur, other, otherlen)) | |
| 391 return cur - begin; | |
| 392 } | |
| 393 return -1; | |
| 394 } | |
| 395 | |
| 396 int32_t | |
| 397 nsAString::RFind(const char *aStr, int32_t aOffset, bool aIgnoreCase) const | |
| 398 { | |
| 399 bool (*match)(const char16_t*, const char*, uint32_t) = | |
| 400 aIgnoreCase ? ns_strnimatch : ns_strnmatch; | |
| 401 | |
| 402 const char_type *begin, *end; | |
| 403 uint32_t selflen = BeginReading(&begin, &end); | |
| 404 uint32_t otherlen = strlen(aStr); | |
| 405 | |
| 406 if (selflen < otherlen) | |
| 407 return -1; | |
| 408 | |
| 409 if (aOffset < 0 || uint32_t(aOffset) > (selflen - otherlen)) | |
| 410 end -= otherlen; | |
| 411 else | |
| 412 end = begin + aOffset; | |
| 413 | |
| 414 for (const char_type *cur = end; cur >= begin; --cur) { | |
| 415 if (match(cur, aStr, otherlen)) { | |
| 416 return cur - begin; | |
| 417 } | |
| 418 } | |
| 419 return -1; | |
| 420 } | |
| 421 | |
| 422 int32_t | |
| 423 nsAString::FindChar(char_type aChar, uint32_t aOffset) const | |
| 424 { | |
| 425 const char_type *start, *end; | |
| 426 uint32_t len = BeginReading(&start, &end); | |
| 427 if (aOffset > len) | |
| 428 return -1; | |
| 429 | |
| 430 const char_type *cur; | |
| 431 | |
| 432 for (cur = start + aOffset; cur < end; ++cur) { | |
| 433 if (*cur == aChar) | |
| 434 return cur - start; | |
| 435 } | |
| 436 | |
| 437 return -1; | |
| 438 } | |
| 439 | |
| 440 int32_t | |
| 441 nsAString::RFindChar(char_type aChar) const | |
| 442 { | |
| 443 const char16_t *start, *end; | |
| 444 BeginReading(&start, &end); | |
| 445 | |
| 446 do { | |
| 447 --end; | |
| 448 | |
| 449 if (*end == aChar) | |
| 450 return end - start; | |
| 451 | |
| 452 } while (end >= start); | |
| 453 | |
| 454 return -1; | |
| 455 } | |
| 456 | |
| 457 void | |
| 458 nsAString::AppendInt(int aInt, int32_t aRadix) | |
| 459 { | |
| 460 const char *fmt; | |
| 461 switch (aRadix) { | |
| 462 case 8: | |
| 463 fmt = "%o"; | |
| 464 break; | |
| 465 | |
| 466 case 10: | |
| 467 fmt = "%d"; | |
| 468 break; | |
| 469 | |
| 470 case 16: | |
| 471 fmt = "%x"; | |
| 472 break; | |
| 473 | |
| 474 default: | |
| 475 NS_ERROR("Unrecognized radix"); | |
| 476 fmt = ""; | |
| 477 }; | |
| 478 | |
| 479 char buf[20]; | |
| 480 int len = snprintf(buf, sizeof(buf), fmt, aInt); | |
| 481 buf[sizeof(buf) - 1] = '\0'; | |
| 482 | |
| 483 Append(NS_ConvertASCIItoUTF16(buf, len)); | |
| 484 } | |
| 485 | |
| 486 // Strings | |
| 487 | |
| 488 #ifndef XPCOM_GLUE_AVOID_NSPR | |
| 489 int32_t | |
| 490 nsAString::ToInteger(nsresult *aErrorCode, uint32_t aRadix) const | |
| 491 { | |
| 492 NS_ConvertUTF16toUTF8 narrow(*this); | |
| 493 | |
| 494 const char *fmt; | |
| 495 switch (aRadix) { | |
| 496 case 10: | |
| 497 fmt = "%i"; | |
| 498 break; | |
| 499 | |
| 500 case 16: | |
| 501 fmt = "%x"; | |
| 502 break; | |
| 503 | |
| 504 default: | |
| 505 NS_ERROR("Unrecognized radix!"); | |
| 506 *aErrorCode = NS_ERROR_INVALID_ARG; | |
| 507 return 0; | |
| 508 } | |
| 509 | |
| 510 int32_t result = 0; | |
| 511 if (PR_sscanf(narrow.get(), fmt, &result) == 1) | |
| 512 *aErrorCode = NS_OK; | |
| 513 else | |
| 514 *aErrorCode = NS_ERROR_FAILURE; | |
| 515 | |
| 516 return result; | |
| 517 } | |
| 518 | |
| 519 int64_t | |
| 520 nsAString::ToInteger64(nsresult *aErrorCode, uint32_t aRadix) const | |
| 521 { | |
| 522 NS_ConvertUTF16toUTF8 narrow(*this); | |
| 523 | |
| 524 const char *fmt; | |
| 525 switch (aRadix) { | |
| 526 case 10: | |
| 527 fmt = "%lli"; | |
| 528 break; | |
| 529 | |
| 530 case 16: | |
| 531 fmt = "%llx"; | |
| 532 break; | |
| 533 | |
| 534 default: | |
| 535 NS_ERROR("Unrecognized radix!"); | |
| 536 *aErrorCode = NS_ERROR_INVALID_ARG; | |
| 537 return 0; | |
| 538 } | |
| 539 | |
| 540 int64_t result = 0; | |
| 541 if (PR_sscanf(narrow.get(), fmt, &result) == 1) | |
| 542 *aErrorCode = NS_OK; | |
| 543 else | |
| 544 *aErrorCode = NS_ERROR_FAILURE; | |
| 545 | |
| 546 return result; | |
| 547 } | |
| 548 #endif // XPCOM_GLUE_AVOID_NSPR | |
| 549 | |
| 550 // nsACString | |
| 551 | |
| 552 uint32_t | |
| 553 nsACString::BeginReading(const char_type **begin, const char_type **end) const | |
| 554 { | |
| 555 uint32_t len = NS_CStringGetData(*this, begin); | |
| 556 if (end) | |
| 557 *end = *begin + len; | |
| 558 | |
| 559 return len; | |
| 560 } | |
| 561 | |
| 562 const nsACString::char_type* | |
| 563 nsACString::BeginReading() const | |
| 564 { | |
| 565 const char_type *data; | |
| 566 NS_CStringGetData(*this, &data); | |
| 567 return data; | |
| 568 } | |
| 569 | |
| 570 const nsACString::char_type* | |
| 571 nsACString::EndReading() const | |
| 572 { | |
| 573 const char_type *data; | |
| 574 uint32_t len = NS_CStringGetData(*this, &data); | |
| 575 return data + len; | |
| 576 } | |
| 577 | |
| 578 uint32_t | |
| 579 nsACString::BeginWriting(char_type **begin, char_type **end, uint32_t newSize) | |
| 580 { | |
| 581 uint32_t len = NS_CStringGetMutableData(*this, newSize, begin); | |
| 582 if (end) | |
| 583 *end = *begin + len; | |
| 584 | |
| 585 return len; | |
| 586 } | |
| 587 | |
| 588 nsACString::char_type* | |
| 589 nsACString::BeginWriting(uint32_t aLen) | |
| 590 { | |
| 591 char_type *data; | |
| 592 NS_CStringGetMutableData(*this, aLen, &data); | |
| 593 return data; | |
| 594 } | |
| 595 | |
| 596 nsACString::char_type* | |
| 597 nsACString::EndWriting() | |
| 598 { | |
| 599 char_type *data; | |
| 600 uint32_t len = NS_CStringGetMutableData(*this, UINT32_MAX, &data); | |
| 601 return data + len; | |
| 602 } | |
| 603 | |
| 604 bool | |
| 605 nsACString::SetLength(uint32_t aLen) | |
| 606 { | |
| 607 char_type *data; | |
| 608 NS_CStringGetMutableData(*this, aLen, &data); | |
| 609 return data != nullptr; | |
| 610 } | |
| 611 | |
| 612 void | |
| 613 nsACString::StripChars(const char *aSet) | |
| 614 { | |
| 615 nsCString copy(*this); | |
| 616 | |
| 617 const char_type *source, *sourceEnd; | |
| 618 copy.BeginReading(&source, &sourceEnd); | |
| 619 | |
| 620 char_type *dest; | |
| 621 BeginWriting(&dest); | |
| 622 if (!dest) | |
| 623 return; | |
| 624 | |
| 625 char_type *curDest = dest; | |
| 626 | |
| 627 for (; source < sourceEnd; ++source) { | |
| 628 const char *test; | |
| 629 for (test = aSet; *test; ++test) { | |
| 630 if (*source == char_type(*test)) | |
| 631 break; | |
| 632 } | |
| 633 | |
| 634 if (!*test) { | |
| 635 // not stripped, copy this char | |
| 636 *curDest = *source; | |
| 637 ++curDest; | |
| 638 } | |
| 639 } | |
| 640 | |
| 641 SetLength(curDest - dest); | |
| 642 } | |
| 643 | |
| 644 void | |
| 645 nsACString::Trim(const char *aSet, bool aLeading, bool aTrailing) | |
| 646 { | |
| 647 NS_ASSERTION(aLeading || aTrailing, "Ineffective Trim"); | |
| 648 | |
| 649 const char *start, *end; | |
| 650 uint32_t cutLen; | |
| 651 | |
| 652 if (aLeading) { | |
| 653 BeginReading(&start, &end); | |
| 654 for (cutLen = 0; start < end; ++start, ++cutLen) { | |
| 655 const char *test; | |
| 656 for (test = aSet; *test; ++test) { | |
| 657 if (*test == *start) | |
| 658 break; | |
| 659 } | |
| 660 if (!*test) | |
| 661 break; | |
| 662 } | |
| 663 if (cutLen) { | |
| 664 NS_CStringCutData(*this, 0, cutLen); | |
| 665 } | |
| 666 } | |
| 667 if (aTrailing) { | |
| 668 uint32_t len = BeginReading(&start, &end); | |
| 669 --end; | |
| 670 for (cutLen = 0; end >= start; --end, ++cutLen) { | |
| 671 const char *test; | |
| 672 for (test = aSet; *test; ++test) { | |
| 673 if (*test == *end) | |
| 674 break; | |
| 675 } | |
| 676 if (!*test) | |
| 677 break; | |
| 678 } | |
| 679 if (cutLen) { | |
| 680 NS_CStringCutData(*this, len - cutLen, cutLen); | |
| 681 } | |
| 682 } | |
| 683 } | |
| 684 | |
| 685 int32_t | |
| 686 nsACString::DefaultComparator(const char_type *a, const char_type *b, | |
| 687 uint32_t len) | |
| 688 { | |
| 689 return memcmp(a, b, len); | |
| 690 } | |
| 691 | |
| 692 int32_t | |
| 693 nsACString::Compare(const char_type *other, ComparatorFunc c) const | |
| 694 { | |
| 695 const char_type *cself; | |
| 696 uint32_t selflen = NS_CStringGetData(*this, &cself); | |
| 697 uint32_t otherlen = strlen(other); | |
| 698 uint32_t comparelen = selflen <= otherlen ? selflen : otherlen; | |
| 699 | |
| 700 int32_t result = c(cself, other, comparelen); | |
| 701 if (result == 0) { | |
| 702 if (selflen < otherlen) | |
| 703 return -1; | |
| 704 else if (selflen > otherlen) | |
| 705 return 1; | |
| 706 } | |
| 707 return result; | |
| 708 } | |
| 709 | |
| 710 int32_t | |
| 711 nsACString::Compare(const self_type &other, ComparatorFunc c) const | |
| 712 { | |
| 713 const char_type *cself, *cother; | |
| 714 uint32_t selflen = NS_CStringGetData(*this, &cself); | |
| 715 uint32_t otherlen = NS_CStringGetData(other, &cother); | |
| 716 uint32_t comparelen = selflen <= otherlen ? selflen : otherlen; | |
| 717 | |
| 718 int32_t result = c(cself, cother, comparelen); | |
| 719 if (result == 0) { | |
| 720 if (selflen < otherlen) | |
| 721 return -1; | |
| 722 else if (selflen > otherlen) | |
| 723 return 1; | |
| 724 } | |
| 725 return result; | |
| 726 } | |
| 727 | |
| 728 bool | |
| 729 nsACString::Equals(const char_type *other, ComparatorFunc c) const | |
| 730 { | |
| 731 const char_type *cself; | |
| 732 uint32_t selflen = NS_CStringGetData(*this, &cself); | |
| 733 uint32_t otherlen = strlen(other); | |
| 734 | |
| 735 if (selflen != otherlen) | |
| 736 return false; | |
| 737 | |
| 738 return c(cself, other, selflen) == 0; | |
| 739 } | |
| 740 | |
| 741 bool | |
| 742 nsACString::Equals(const self_type &other, ComparatorFunc c) const | |
| 743 { | |
| 744 const char_type *cself; | |
| 745 const char_type *cother; | |
| 746 uint32_t selflen = NS_CStringGetData(*this, &cself); | |
| 747 uint32_t otherlen = NS_CStringGetData(other, &cother); | |
| 748 | |
| 749 if (selflen != otherlen) | |
| 750 return false; | |
| 751 | |
| 752 return c(cself, cother, selflen) == 0; | |
| 753 } | |
| 754 | |
| 755 int32_t | |
| 756 nsACString::Find(const self_type& aStr, uint32_t aOffset, | |
| 757 ComparatorFunc c) const | |
| 758 { | |
| 759 const char_type *begin, *end; | |
| 760 uint32_t selflen = BeginReading(&begin, &end); | |
| 761 | |
| 762 if (aOffset > selflen) | |
| 763 return -1; | |
| 764 | |
| 765 const char_type *other; | |
| 766 uint32_t otherlen = aStr.BeginReading(&other); | |
| 767 | |
| 768 if (otherlen > selflen - aOffset) | |
| 769 return -1; | |
| 770 | |
| 771 // We want to stop searching otherlen characters before the end of the string | |
| 772 end -= otherlen; | |
| 773 | |
| 774 for (const char_type *cur = begin + aOffset; cur <= end; ++cur) { | |
| 775 if (!c(cur, other, otherlen)) | |
| 776 return cur - begin; | |
| 777 } | |
| 778 return -1; | |
| 779 } | |
| 780 | |
| 781 int32_t | |
| 782 nsACString::Find(const char_type *aStr, ComparatorFunc c) const | |
| 783 { | |
| 784 return Find(aStr, strlen(aStr), c); | |
| 785 } | |
| 786 | |
| 787 int32_t | |
| 788 nsACString::Find(const char_type *aStr, uint32_t aLen, ComparatorFunc c) const | |
| 789 { | |
| 790 const char_type *begin, *end; | |
| 791 uint32_t selflen = BeginReading(&begin, &end); | |
| 792 | |
| 793 if (aLen == 0) { | |
| 794 NS_WARNING("Searching for zero-length string."); | |
| 795 return -1; | |
| 796 } | |
| 797 | |
| 798 if (aLen > selflen) | |
| 799 return -1; | |
| 800 | |
| 801 // We want to stop searching otherlen characters before the end of the string | |
| 802 end -= aLen; | |
| 803 | |
| 804 for (const char_type *cur = begin; cur <= end; ++cur) { | |
| 805 if (!c(cur, aStr, aLen)) | |
| 806 return cur - begin; | |
| 807 } | |
| 808 return -1; | |
| 809 } | |
| 810 | |
| 811 int32_t | |
| 812 nsACString::RFind(const self_type& aStr, int32_t aOffset, ComparatorFunc c) const | |
| 813 { | |
| 814 const char_type *begin, *end; | |
| 815 uint32_t selflen = BeginReading(&begin, &end); | |
| 816 | |
| 817 const char_type *other; | |
| 818 uint32_t otherlen = aStr.BeginReading(&other); | |
| 819 | |
| 820 if (selflen < otherlen) | |
| 821 return -1; | |
| 822 | |
| 823 if (aOffset < 0 || uint32_t(aOffset) > (selflen - otherlen)) | |
| 824 end -= otherlen; | |
| 825 else | |
| 826 end = begin + aOffset; | |
| 827 | |
| 828 for (const char_type *cur = end; cur >= begin; --cur) { | |
| 829 if (!c(cur, other, otherlen)) | |
| 830 return cur - begin; | |
| 831 } | |
| 832 return -1; | |
| 833 } | |
| 834 | |
| 835 int32_t | |
| 836 nsACString::RFind(const char_type *aStr, ComparatorFunc c) const | |
| 837 { | |
| 838 return RFind(aStr, strlen(aStr), c); | |
| 839 } | |
| 840 | |
| 841 int32_t | |
| 842 nsACString::RFind(const char_type *aStr, int32_t aLen, ComparatorFunc c) const | |
| 843 { | |
| 844 const char_type *begin, *end; | |
| 845 uint32_t selflen = BeginReading(&begin, &end); | |
| 846 | |
| 847 if (aLen <= 0) { | |
| 848 NS_WARNING("Searching for zero-length string."); | |
| 849 return -1; | |
| 850 } | |
| 851 | |
| 852 if (uint32_t(aLen) > selflen) | |
| 853 return -1; | |
| 854 | |
| 855 // We want to start searching otherlen characters before the end of the string | |
| 856 end -= aLen; | |
| 857 | |
| 858 for (const char_type *cur = end; cur >= begin; --cur) { | |
| 859 if (!c(cur, aStr, aLen)) | |
| 860 return cur - begin; | |
| 861 } | |
| 862 return -1; | |
| 863 } | |
| 864 | |
| 865 int32_t | |
| 866 nsACString::FindChar(char_type aChar, uint32_t aOffset) const | |
| 867 { | |
| 868 const char_type *start, *end; | |
| 869 uint32_t len = BeginReading(&start, &end); | |
| 870 if (aOffset > len) | |
| 871 return -1; | |
| 872 | |
| 873 const char_type *cur; | |
| 874 | |
| 875 for (cur = start + aOffset; cur < end; ++cur) { | |
| 876 if (*cur == aChar) | |
| 877 return cur - start; | |
| 878 } | |
| 879 | |
| 880 return -1; | |
| 881 } | |
| 882 | |
| 883 int32_t | |
| 884 nsACString::RFindChar(char_type aChar) const | |
| 885 { | |
| 886 const char *start, *end; | |
| 887 BeginReading(&start, &end); | |
| 888 | |
| 889 for (; end >= start; --end) { | |
| 890 if (*end == aChar) | |
| 891 return end - start; | |
| 892 } | |
| 893 | |
| 894 return -1; | |
| 895 } | |
| 896 | |
| 897 void | |
| 898 nsACString::AppendInt(int aInt, int32_t aRadix) | |
| 899 { | |
| 900 const char *fmt; | |
| 901 switch (aRadix) { | |
| 902 case 8: | |
| 903 fmt = "%o"; | |
| 904 break; | |
| 905 | |
| 906 case 10: | |
| 907 fmt = "%d"; | |
| 908 break; | |
| 909 | |
| 910 case 16: | |
| 911 fmt = "%x"; | |
| 912 break; | |
| 913 | |
| 914 default: | |
| 915 NS_ERROR("Unrecognized radix"); | |
| 916 fmt = ""; | |
| 917 }; | |
| 918 | |
| 919 char buf[20]; | |
| 920 int len = snprintf(buf, sizeof(buf), fmt, aInt); | |
| 921 buf[sizeof(buf) - 1] = '\0'; | |
| 922 | |
| 923 Append(buf, len); | |
| 924 } | |
| 925 | |
| 926 #ifndef XPCOM_GLUE_AVOID_NSPR | |
| 927 int32_t | |
| 928 nsACString::ToInteger(nsresult *aErrorCode, uint32_t aRadix) const | |
| 929 { | |
| 930 const char *fmt; | |
| 931 switch (aRadix) { | |
| 932 case 10: | |
| 933 fmt = "%i"; | |
| 934 break; | |
| 935 | |
| 936 case 16: | |
| 937 fmt = "%x"; | |
| 938 break; | |
| 939 | |
| 940 default: | |
| 941 NS_ERROR("Unrecognized radix!"); | |
| 942 *aErrorCode = NS_ERROR_INVALID_ARG; | |
| 943 return 0; | |
| 944 } | |
| 945 | |
| 946 int32_t result = 0; | |
| 947 if (PR_sscanf(nsCString(*this).get(), fmt, &result) == 1) | |
| 948 *aErrorCode = NS_OK; | |
| 949 else | |
| 950 *aErrorCode = NS_ERROR_FAILURE; | |
| 951 | |
| 952 return result; | |
| 953 } | |
| 954 | |
| 955 int64_t | |
| 956 nsACString::ToInteger64(nsresult *aErrorCode, uint32_t aRadix) const | |
| 957 { | |
| 958 const char *fmt; | |
| 959 switch (aRadix) { | |
| 960 case 10: | |
| 961 fmt = "%lli"; | |
| 962 break; | |
| 963 | |
| 964 case 16: | |
| 965 fmt = "%llx"; | |
| 966 break; | |
| 967 | |
| 968 default: | |
| 969 NS_ERROR("Unrecognized radix!"); | |
| 970 *aErrorCode = NS_ERROR_INVALID_ARG; | |
| 971 return 0; | |
| 972 } | |
| 973 | |
| 974 int64_t result = 0; | |
| 975 if (PR_sscanf(nsCString(*this).get(), fmt, &result) == 1) | |
| 976 *aErrorCode = NS_OK; | |
| 977 else | |
| 978 *aErrorCode = NS_ERROR_FAILURE; | |
| 979 | |
| 980 return result; | |
| 981 } | |
| 982 #endif // XPCOM_GLUE_AVOID_NSPR | |
| 983 | |
| 984 // Substrings | |
| 985 | |
| 986 nsDependentSubstring::nsDependentSubstring(const abstract_string_type& aStr, | |
| 987 uint32_t aStartPos) | |
| 988 { | |
| 989 const char16_t* data; | |
| 990 uint32_t len = NS_StringGetData(aStr, &data); | |
| 991 | |
| 992 if (aStartPos > len) | |
| 993 aStartPos = len; | |
| 994 | |
| 995 NS_StringContainerInit2(*this, data + aStartPos, len - aStartPos, | |
| 996 NS_STRING_CONTAINER_INIT_DEPEND | | |
| 997 NS_STRING_CONTAINER_INIT_SUBSTRING); | |
| 998 } | |
| 999 | |
| 1000 nsDependentSubstring::nsDependentSubstring(const abstract_string_type& aStr, | |
| 1001 uint32_t aStartPos, | |
| 1002 uint32_t aLength) | |
| 1003 { | |
| 1004 const char16_t* data; | |
| 1005 uint32_t len = NS_StringGetData(aStr, &data); | |
| 1006 | |
| 1007 if (aStartPos > len) | |
| 1008 aStartPos = len; | |
| 1009 | |
| 1010 if (aStartPos + aLength > len) | |
| 1011 aLength = len - aStartPos; | |
| 1012 | |
| 1013 NS_StringContainerInit2(*this, data + aStartPos, aLength, | |
| 1014 NS_STRING_CONTAINER_INIT_DEPEND | | |
| 1015 NS_STRING_CONTAINER_INIT_SUBSTRING); | |
| 1016 } | |
| 1017 | |
| 1018 nsDependentCSubstring::nsDependentCSubstring(const abstract_string_type& aStr, | |
| 1019 uint32_t aStartPos) | |
| 1020 { | |
| 1021 const char* data; | |
| 1022 uint32_t len = NS_CStringGetData(aStr, &data); | |
| 1023 | |
| 1024 if (aStartPos > len) | |
| 1025 aStartPos = len; | |
| 1026 | |
| 1027 NS_CStringContainerInit2(*this, data + aStartPos, len - aStartPos, | |
| 1028 NS_CSTRING_CONTAINER_INIT_DEPEND | | |
| 1029 NS_CSTRING_CONTAINER_INIT_SUBSTRING); | |
| 1030 } | |
| 1031 | |
| 1032 nsDependentCSubstring::nsDependentCSubstring(const abstract_string_type& aStr, | |
| 1033 uint32_t aStartPos, | |
| 1034 uint32_t aLength) | |
| 1035 { | |
| 1036 const char* data; | |
| 1037 uint32_t len = NS_CStringGetData(aStr, &data); | |
| 1038 | |
| 1039 if (aStartPos > len) | |
| 1040 aStartPos = len; | |
| 1041 | |
| 1042 if (aStartPos + aLength > len) | |
| 1043 aLength = len - aStartPos; | |
| 1044 | |
| 1045 NS_CStringContainerInit2(*this, data + aStartPos, aLength, | |
| 1046 NS_CSTRING_CONTAINER_INIT_DEPEND | | |
| 1047 NS_CSTRING_CONTAINER_INIT_SUBSTRING); | |
| 1048 } | |
| 1049 | |
| 1050 // Utils | |
| 1051 | |
| 1052 char* | |
| 1053 ToNewUTF8String(const nsAString& aSource) | |
| 1054 { | |
| 1055 nsCString temp; | |
| 1056 CopyUTF16toUTF8(aSource, temp); | |
| 1057 return NS_CStringCloneData(temp); | |
| 1058 } | |
| 1059 | |
| 1060 void | |
| 1061 CompressWhitespace(nsAString& aString) | |
| 1062 { | |
| 1063 char16_t *start; | |
| 1064 uint32_t len = NS_StringGetMutableData(aString, UINT32_MAX, &start); | |
| 1065 char16_t *end = start + len; | |
| 1066 char16_t *from = start, *to = start; | |
| 1067 | |
| 1068 // Skip any leading whitespace | |
| 1069 while (from < end && NS_IsAsciiWhitespace(*from)) | |
| 1070 from++; | |
| 1071 | |
| 1072 while (from < end) { | |
| 1073 char16_t theChar = *from++; | |
| 1074 | |
| 1075 if (NS_IsAsciiWhitespace(theChar)) { | |
| 1076 // We found a whitespace char, so skip over any more | |
| 1077 while (from < end && NS_IsAsciiWhitespace(*from)) | |
| 1078 from++; | |
| 1079 | |
| 1080 // Turn all whitespace into spaces | |
| 1081 theChar = ' '; | |
| 1082 } | |
| 1083 | |
| 1084 *to++ = theChar; | |
| 1085 } | |
| 1086 | |
| 1087 // Drop any trailing space | |
| 1088 if (to > start && to[-1] == ' ') | |
| 1089 to--; | |
| 1090 | |
| 1091 // Re-terminate the string | |
| 1092 *to = '\0'; | |
| 1093 | |
| 1094 // Set the new length | |
| 1095 aString.SetLength(to - start); | |
| 1096 } | |
| 1097 | |
| 1098 uint32_t | |
| 1099 ToLowerCase(nsACString& aStr) | |
| 1100 { | |
| 1101 char *begin, *end; | |
| 1102 uint32_t len = aStr.BeginWriting(&begin, &end); | |
| 1103 | |
| 1104 for (; begin < end; ++begin) { | |
| 1105 *begin = NS_ToLower(*begin); | |
| 1106 } | |
| 1107 | |
| 1108 return len; | |
| 1109 } | |
| 1110 | |
| 1111 uint32_t | |
| 1112 ToUpperCase(nsACString& aStr) | |
| 1113 { | |
| 1114 char *begin, *end; | |
| 1115 uint32_t len = aStr.BeginWriting(&begin, &end); | |
| 1116 | |
| 1117 for (; begin < end; ++begin) { | |
| 1118 *begin = NS_ToUpper(*begin); | |
| 1119 } | |
| 1120 | |
| 1121 return len; | |
| 1122 } | |
| 1123 | |
| 1124 uint32_t | |
| 1125 ToLowerCase(const nsACString& aSrc, nsACString& aDest) | |
| 1126 { | |
| 1127 const char *begin, *end; | |
| 1128 uint32_t len = aSrc.BeginReading(&begin, &end); | |
| 1129 | |
| 1130 char *dest; | |
| 1131 NS_CStringGetMutableData(aDest, len, &dest); | |
| 1132 | |
| 1133 for (; begin < end; ++begin, ++dest) { | |
| 1134 *dest = NS_ToLower(*begin); | |
| 1135 } | |
| 1136 | |
| 1137 return len; | |
| 1138 } | |
| 1139 | |
| 1140 uint32_t | |
| 1141 ToUpperCase(const nsACString& aSrc, nsACString& aDest) | |
| 1142 { | |
| 1143 const char *begin, *end; | |
| 1144 uint32_t len = aSrc.BeginReading(&begin, &end); | |
| 1145 | |
| 1146 char *dest; | |
| 1147 NS_CStringGetMutableData(aDest, len, &dest); | |
| 1148 | |
| 1149 for (; begin < end; ++begin, ++dest) { | |
| 1150 *dest = NS_ToUpper(*begin); | |
| 1151 } | |
| 1152 | |
| 1153 return len; | |
| 1154 } | |
| 1155 | |
| 1156 int32_t | |
| 1157 CaseInsensitiveCompare(const char *a, const char *b, | |
| 1158 uint32_t len) | |
| 1159 { | |
| 1160 for (const char *aend = a + len; a < aend; ++a, ++b) { | |
| 1161 char la = NS_ToLower(*a); | |
| 1162 char lb = NS_ToLower(*b); | |
| 1163 | |
| 1164 if (la == lb) | |
| 1165 continue; | |
| 1166 | |
| 1167 return la < lb ? -1 : 1; | |
| 1168 } | |
| 1169 | |
| 1170 return 0; | |
| 1171 } | |
| 1172 | |
| 1173 bool | |
| 1174 ParseString(const nsACString& aSource, char aDelimiter, | |
| 1175 nsTArray<nsCString>& aArray) | |
| 1176 { | |
| 1177 int32_t start = 0; | |
| 1178 int32_t end = aSource.Length(); | |
| 1179 | |
| 1180 uint32_t oldLength = aArray.Length(); | |
| 1181 | |
| 1182 for (;;) { | |
| 1183 int32_t delimiter = aSource.FindChar(aDelimiter, start); | |
| 1184 if (delimiter < 0) { | |
| 1185 delimiter = end; | |
| 1186 } | |
| 1187 | |
| 1188 if (delimiter != start) { | |
| 1189 if (!aArray.AppendElement(Substring(aSource, start, delimiter - start))) { | |
| 1190 aArray.RemoveElementsAt(oldLength, aArray.Length() - oldLength); | |
| 1191 return false; | |
| 1192 } | |
| 1193 } | |
| 1194 | |
| 1195 if (delimiter == end) | |
| 1196 break; | |
| 1197 start = ++delimiter; | |
| 1198 if (start == end) | |
| 1199 break; | |
| 1200 } | |
| 1201 | |
| 1202 return true; | |
| 1203 } |
