1 /* 2 * Copyright (C) 2004, 2006, 2007, 2008, 2011 Apple Inc. All rights reserved. 3 * Copyright (C) 2006 Alexey Proskuryakov <ap (at) nypop.com> 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY 15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 17 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR 18 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 19 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 20 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 21 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 22 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27 #include "config.h" 28 #include "wtf/text/TextCodecICU.h" 29 30 #include <unicode/ucnv.h> 31 #include <unicode/ucnv_cb.h> 32 #include "wtf/Assertions.h" 33 #include "wtf/StringExtras.h" 34 #include "wtf/Threading.h" 35 #include "wtf/WTFThreadData.h" 36 #include "wtf/text/CString.h" 37 #include "wtf/text/StringBuilder.h" 38 #include "wtf/unicode/CharacterNames.h" 39 40 using std::min; 41 42 namespace WTF { 43 44 const size_t ConversionBufferSize = 16384; 45 46 ICUConverterWrapper::~ICUConverterWrapper() 47 { 48 if (converter) 49 ucnv_close(converter); 50 } 51 52 static UConverter*& cachedConverterICU() 53 { 54 return wtfThreadData().cachedConverterICU().converter; 55 } 56 57 PassOwnPtr<TextCodec> TextCodecICU::create(const TextEncoding& encoding, const void*) 58 { 59 return adoptPtr(new TextCodecICU(encoding)); 60 } 61 62 void TextCodecICU::registerEncodingNames(EncodingNameRegistrar registrar) 63 { 64 // We register Hebrew with logical ordering using a separate name. 65 // Otherwise, this would share the same canonical name as the 66 // visual ordering case, and then TextEncoding could not tell them 67 // apart; ICU treats these names as synonyms. 68 registrar("ISO-8859-8-I", "ISO-8859-8-I"); 69 70 int32_t numEncodings = ucnv_countAvailable(); 71 for (int32_t i = 0; i < numEncodings; ++i) { 72 const char* name = ucnv_getAvailableName(i); 73 UErrorCode error = U_ZERO_ERROR; 74 // Try MIME before trying IANA to pick up commonly used names like 75 // 'EUC-JP' instead of horrendously long names like 76 // 'Extended_UNIX_Code_Packed_Format_for_Japanese'. 77 const char* standardName = ucnv_getStandardName(name, "MIME", &error); 78 if (!U_SUCCESS(error) || !standardName) { 79 error = U_ZERO_ERROR; 80 // Try IANA to pick up 'windows-12xx' and other names 81 // which are not preferred MIME names but are widely used. 82 standardName = ucnv_getStandardName(name, "IANA", &error); 83 if (!U_SUCCESS(error) || !standardName) 84 continue; 85 } 86 87 // A number of these aliases are handled in Chrome's copy of ICU, but 88 // Chromium can be compiled with the system ICU. 89 90 // 1. Treat GB2312 encoding as GBK (its more modern superset), to match other browsers. 91 // 2. On the Web, GB2312 is encoded as EUC-CN or HZ, while ICU provides a native encoding 92 // for encoding GB_2312-80 and several others. So, we need to override this behavior, too. 93 if (!strcmp(standardName, "GB2312") || !strcmp(standardName, "GB_2312-80")) 94 standardName = "GBK"; 95 // Similarly, EUC-KR encodings all map to an extended version, but 96 // per HTML5, the canonical name still should be EUC-KR. 97 else if (!strcmp(standardName, "EUC-KR") || !strcmp(standardName, "KSC_5601") || !strcmp(standardName, "cp1363")) 98 standardName = "EUC-KR"; 99 // And so on. 100 else if (!strcasecmp(standardName, "iso-8859-9")) // This name is returned in different case by ICU 3.2 and 3.6. 101 standardName = "windows-1254"; 102 else if (!strcmp(standardName, "TIS-620")) 103 standardName = "windows-874"; 104 105 registrar(standardName, standardName); 106 107 uint16_t numAliases = ucnv_countAliases(name, &error); 108 ASSERT(U_SUCCESS(error)); 109 if (U_SUCCESS(error)) 110 for (uint16_t j = 0; j < numAliases; ++j) { 111 error = U_ZERO_ERROR; 112 const char* alias = ucnv_getAlias(name, j, &error); 113 ASSERT(U_SUCCESS(error)); 114 if (U_SUCCESS(error) && alias != standardName) 115 registrar(alias, standardName); 116 } 117 } 118 119 // Additional aliases. 120 // These are present in modern versions of ICU, but not in ICU 3.2 (shipped with Mac OS X 10.4). 121 registrar("macroman", "macintosh"); 122 registrar("maccyrillic", "x-mac-cyrillic"); 123 124 // Additional aliases that historically were present in the encoding 125 // table in WebKit on Macintosh that don't seem to be present in ICU. 126 // Perhaps we can prove these are not used on the web and remove them. 127 // Or perhaps we can get them added to ICU. 128 registrar("x-mac-roman", "macintosh"); 129 registrar("x-mac-ukrainian", "x-mac-cyrillic"); 130 registrar("cn-big5", "Big5"); 131 registrar("x-x-big5", "Big5"); 132 registrar("cn-gb", "GBK"); 133 registrar("csgb231280", "GBK"); 134 registrar("x-euc-cn", "GBK"); 135 registrar("x-gbk", "GBK"); 136 registrar("csISO88598I", "ISO-8859-8-I"); 137 registrar("koi", "KOI8-R"); 138 registrar("logical", "ISO-8859-8-I"); 139 registrar("visual", "ISO-8859-8"); 140 registrar("winarabic", "windows-1256"); 141 registrar("winbaltic", "windows-1257"); 142 registrar("wincyrillic", "windows-1251"); 143 registrar("iso-8859-11", "windows-874"); 144 registrar("iso8859-11", "windows-874"); 145 registrar("dos-874", "windows-874"); 146 registrar("wingreek", "windows-1253"); 147 registrar("winhebrew", "windows-1255"); 148 registrar("winlatin2", "windows-1250"); 149 registrar("winturkish", "windows-1254"); 150 registrar("winvietnamese", "windows-1258"); 151 registrar("x-cp1250", "windows-1250"); 152 registrar("x-cp1251", "windows-1251"); 153 registrar("x-euc", "EUC-JP"); 154 registrar("x-windows-949", "EUC-KR"); 155 registrar("KSC5601", "EUC-KR"); 156 registrar("x-uhc", "EUC-KR"); 157 registrar("shift-jis", "Shift_JIS"); 158 159 // These aliases are present in modern versions of ICU, but use different codecs, and have no standard names. 160 // They are not present in ICU 3.2. 161 registrar("dos-720", "cp864"); 162 registrar("jis7", "ISO-2022-JP"); 163 164 // Alternative spelling of ISO encoding names. 165 registrar("ISO8859-1", "ISO-8859-1"); 166 registrar("ISO8859-2", "ISO-8859-2"); 167 registrar("ISO8859-3", "ISO-8859-3"); 168 registrar("ISO8859-4", "ISO-8859-4"); 169 registrar("ISO8859-5", "ISO-8859-5"); 170 registrar("ISO8859-6", "ISO-8859-6"); 171 registrar("ISO8859-7", "ISO-8859-7"); 172 registrar("ISO8859-8", "ISO-8859-8"); 173 registrar("ISO8859-8-I", "ISO-8859-8-I"); 174 registrar("ISO8859-9", "ISO-8859-9"); 175 registrar("ISO8859-10", "ISO-8859-10"); 176 registrar("ISO8859-13", "ISO-8859-13"); 177 registrar("ISO8859-14", "ISO-8859-14"); 178 registrar("ISO8859-15", "ISO-8859-15"); 179 // Not registering ISO8859-16, because Firefox (as of version 3.6.6) doesn't know this particular alias, 180 // and because older versions of ICU don't support ISO-8859-16 encoding at all. 181 182 // Additional aliases present in the WHATWG Encoding Standard (http://encoding.spec.whatwg.org/) 183 // and Firefox (24), but not in ICU 4.6. 184 registrar("csiso58gb231280", "GBK"); 185 registrar("csiso88596e", "ISO-8859-6"); 186 registrar("csiso88596i", "ISO-8859-6"); 187 registrar("csiso88598e", "ISO-8859-8"); 188 registrar("gb_2312", "GBK"); 189 registrar("iso88591", "windows-1252"); 190 registrar("iso88592", "ISO-8859-2"); 191 registrar("iso88593", "ISO-8859-3"); 192 registrar("iso88594", "ISO-8859-4"); 193 registrar("iso88595", "ISO-8859-5"); 194 registrar("iso88596", "ISO-8859-6"); 195 registrar("iso88597", "ISO-8859-7"); 196 registrar("iso88598", "ISO-8859-8"); 197 registrar("iso88599", "windows-1254"); 198 registrar("iso885910", "ISO-8859-10"); 199 registrar("iso885911", "windows-874"); 200 registrar("iso885913", "ISO-8859-13"); 201 registrar("iso885914", "ISO-8859-14"); 202 registrar("iso885915", "ISO-8859-15"); 203 registrar("iso_8859-1", "windows-1252"); 204 registrar("iso_8859-2", "ISO-8859-2"); 205 registrar("iso_8859-3", "ISO-8859-3"); 206 registrar("iso_8859-4", "ISO-8859-4"); 207 registrar("iso_8859-5", "ISO-8859-5"); 208 registrar("iso_8859-6", "ISO-8859-6"); 209 registrar("iso_8859-7", "ISO-8859-7"); 210 registrar("iso_8859-8", "ISO-8859-8"); 211 registrar("iso_8859-9", "windows-1254"); 212 registrar("iso_8859-15", "ISO-8859-15"); 213 registrar("koi8_r", "KOI8-R"); 214 registrar("x-cp1252", "windows-1252"); 215 registrar("x-cp1253", "windows-1253"); 216 registrar("x-cp1254", "windows-1254"); 217 registrar("x-cp1255", "windows-1255"); 218 registrar("x-cp1256", "windows-1256"); 219 registrar("x-cp1257", "windows-1257"); 220 registrar("x-cp1258", "windows-1258"); 221 } 222 223 void TextCodecICU::registerCodecs(TextCodecRegistrar registrar) 224 { 225 // See comment above in registerEncodingNames. 226 registrar("ISO-8859-8-I", create, 0); 227 228 int32_t numEncodings = ucnv_countAvailable(); 229 for (int32_t i = 0; i < numEncodings; ++i) { 230 const char* name = ucnv_getAvailableName(i); 231 UErrorCode error = U_ZERO_ERROR; 232 const char* standardName = ucnv_getStandardName(name, "MIME", &error); 233 if (!U_SUCCESS(error) || !standardName) { 234 error = U_ZERO_ERROR; 235 standardName = ucnv_getStandardName(name, "IANA", &error); 236 if (!U_SUCCESS(error) || !standardName) 237 continue; 238 } 239 registrar(standardName, create, 0); 240 } 241 } 242 243 TextCodecICU::TextCodecICU(const TextEncoding& encoding) 244 : m_encoding(encoding) 245 , m_converterICU(0) 246 , m_needsGBKFallbacks(false) 247 { 248 } 249 250 TextCodecICU::~TextCodecICU() 251 { 252 releaseICUConverter(); 253 } 254 255 void TextCodecICU::releaseICUConverter() const 256 { 257 if (m_converterICU) { 258 UConverter*& cachedConverter = cachedConverterICU(); 259 if (cachedConverter) 260 ucnv_close(cachedConverter); 261 cachedConverter = m_converterICU; 262 m_converterICU = 0; 263 } 264 } 265 266 void TextCodecICU::createICUConverter() const 267 { 268 ASSERT(!m_converterICU); 269 270 const char* name = m_encoding.name(); 271 m_needsGBKFallbacks = name[0] == 'G' && name[1] == 'B' && name[2] == 'K' && !name[3]; 272 273 UErrorCode err; 274 275 UConverter*& cachedConverter = cachedConverterICU(); 276 if (cachedConverter) { 277 err = U_ZERO_ERROR; 278 const char* cachedName = ucnv_getName(cachedConverter, &err); 279 if (U_SUCCESS(err) && m_encoding == cachedName) { 280 m_converterICU = cachedConverter; 281 cachedConverter = 0; 282 return; 283 } 284 } 285 286 err = U_ZERO_ERROR; 287 m_converterICU = ucnv_open(m_encoding.name(), &err); 288 #if !LOG_DISABLED 289 if (err == U_AMBIGUOUS_ALIAS_WARNING) 290 WTF_LOG_ERROR("ICU ambiguous alias warning for encoding: %s", m_encoding.name()); 291 #endif 292 if (m_converterICU) 293 ucnv_setFallback(m_converterICU, TRUE); 294 } 295 296 int TextCodecICU::decodeToBuffer(UChar* target, UChar* targetLimit, const char*& source, const char* sourceLimit, int32_t* offsets, bool flush, UErrorCode& err) 297 { 298 UChar* targetStart = target; 299 err = U_ZERO_ERROR; 300 ucnv_toUnicode(m_converterICU, &target, targetLimit, &source, sourceLimit, offsets, flush, &err); 301 return target - targetStart; 302 } 303 304 class ErrorCallbackSetter { 305 public: 306 ErrorCallbackSetter(UConverter* converter, bool stopOnError) 307 : m_converter(converter) 308 , m_shouldStopOnEncodingErrors(stopOnError) 309 { 310 if (m_shouldStopOnEncodingErrors) { 311 UErrorCode err = U_ZERO_ERROR; 312 ucnv_setToUCallBack(m_converter, UCNV_TO_U_CALLBACK_SUBSTITUTE, 313 UCNV_SUB_STOP_ON_ILLEGAL, &m_savedAction, 314 &m_savedContext, &err); 315 ASSERT(err == U_ZERO_ERROR); 316 } 317 } 318 ~ErrorCallbackSetter() 319 { 320 if (m_shouldStopOnEncodingErrors) { 321 UErrorCode err = U_ZERO_ERROR; 322 const void* oldContext; 323 UConverterToUCallback oldAction; 324 ucnv_setToUCallBack(m_converter, m_savedAction, 325 m_savedContext, &oldAction, 326 &oldContext, &err); 327 ASSERT(oldAction == UCNV_TO_U_CALLBACK_SUBSTITUTE); 328 ASSERT(!strcmp(static_cast<const char*>(oldContext), UCNV_SUB_STOP_ON_ILLEGAL)); 329 ASSERT(err == U_ZERO_ERROR); 330 } 331 } 332 333 private: 334 UConverter* m_converter; 335 bool m_shouldStopOnEncodingErrors; 336 const void* m_savedContext; 337 UConverterToUCallback m_savedAction; 338 }; 339 340 String TextCodecICU::decode(const char* bytes, size_t length, bool flush, bool stopOnError, bool& sawError) 341 { 342 // Get a converter for the passed-in encoding. 343 if (!m_converterICU) { 344 createICUConverter(); 345 ASSERT(m_converterICU); 346 if (!m_converterICU) { 347 WTF_LOG_ERROR("error creating ICU encoder even though encoding was in table"); 348 return String(); 349 } 350 } 351 352 ErrorCallbackSetter callbackSetter(m_converterICU, stopOnError); 353 354 StringBuilder result; 355 356 UChar buffer[ConversionBufferSize]; 357 UChar* bufferLimit = buffer + ConversionBufferSize; 358 const char* source = reinterpret_cast<const char*>(bytes); 359 const char* sourceLimit = source + length; 360 int32_t* offsets = NULL; 361 UErrorCode err = U_ZERO_ERROR; 362 363 do { 364 int ucharsDecoded = decodeToBuffer(buffer, bufferLimit, source, sourceLimit, offsets, flush, err); 365 result.append(buffer, ucharsDecoded); 366 } while (err == U_BUFFER_OVERFLOW_ERROR); 367 368 if (U_FAILURE(err)) { 369 // flush the converter so it can be reused, and not be bothered by this error. 370 do { 371 decodeToBuffer(buffer, bufferLimit, source, sourceLimit, offsets, true, err); 372 } while (source < sourceLimit); 373 sawError = true; 374 } 375 376 String resultString = result.toString(); 377 378 // <http://bugs.webkit.org/show_bug.cgi?id=17014> 379 // Simplified Chinese pages use the code A3A0 to mean "full-width space", but ICU decodes it as U+E5E5. 380 if (!strcmp(m_encoding.name(), "GBK") || !strcasecmp(m_encoding.name(), "gb18030")) 381 resultString.replace(0xE5E5, ideographicSpace); 382 383 return resultString; 384 } 385 386 // We need to apply these fallbacks ourselves as they are not currently supported by ICU and 387 // they were provided by the old TEC encoding path. Needed to fix <rdar://problem/4708689>. 388 static UChar fallbackForGBK(UChar32 character) 389 { 390 switch (character) { 391 case 0x01F9: 392 return 0xE7C8; 393 case 0x1E3F: 394 return 0xE7C7; 395 case 0x22EF: 396 return 0x2026; 397 case 0x301C: 398 return 0xFF5E; 399 } 400 return 0; 401 } 402 403 // Invalid character handler when writing escaped entities for unrepresentable 404 // characters. See the declaration of TextCodec::encode for more. 405 static void urlEscapedEntityCallback(const void* context, UConverterFromUnicodeArgs* fromUArgs, const UChar* codeUnits, int32_t length, 406 UChar32 codePoint, UConverterCallbackReason reason, UErrorCode* err) 407 { 408 if (reason == UCNV_UNASSIGNED) { 409 *err = U_ZERO_ERROR; 410 411 UnencodableReplacementArray entity; 412 int entityLen = TextCodec::getUnencodableReplacement(codePoint, URLEncodedEntitiesForUnencodables, entity); 413 ucnv_cbFromUWriteBytes(fromUArgs, entity, entityLen, 0, err); 414 } else 415 UCNV_FROM_U_CALLBACK_ESCAPE(context, fromUArgs, codeUnits, length, codePoint, reason, err); 416 } 417 418 // Substitutes special GBK characters, escaping all other unassigned entities. 419 static void gbkCallbackEscape(const void* context, UConverterFromUnicodeArgs* fromUArgs, const UChar* codeUnits, int32_t length, 420 UChar32 codePoint, UConverterCallbackReason reason, UErrorCode* err) 421 { 422 UChar outChar; 423 if (reason == UCNV_UNASSIGNED && (outChar = fallbackForGBK(codePoint))) { 424 const UChar* source = &outChar; 425 *err = U_ZERO_ERROR; 426 ucnv_cbFromUWriteUChars(fromUArgs, &source, source + 1, 0, err); 427 return; 428 } 429 UCNV_FROM_U_CALLBACK_ESCAPE(context, fromUArgs, codeUnits, length, codePoint, reason, err); 430 } 431 432 // Combines both gbkUrlEscapedEntityCallback and GBK character substitution. 433 static void gbkUrlEscapedEntityCallack(const void* context, UConverterFromUnicodeArgs* fromUArgs, const UChar* codeUnits, int32_t length, 434 UChar32 codePoint, UConverterCallbackReason reason, UErrorCode* err) 435 { 436 if (reason == UCNV_UNASSIGNED) { 437 if (UChar outChar = fallbackForGBK(codePoint)) { 438 const UChar* source = &outChar; 439 *err = U_ZERO_ERROR; 440 ucnv_cbFromUWriteUChars(fromUArgs, &source, source + 1, 0, err); 441 return; 442 } 443 urlEscapedEntityCallback(context, fromUArgs, codeUnits, length, codePoint, reason, err); 444 return; 445 } 446 UCNV_FROM_U_CALLBACK_ESCAPE(context, fromUArgs, codeUnits, length, codePoint, reason, err); 447 } 448 449 static void gbkCallbackSubstitute(const void* context, UConverterFromUnicodeArgs* fromUArgs, const UChar* codeUnits, int32_t length, 450 UChar32 codePoint, UConverterCallbackReason reason, UErrorCode* err) 451 { 452 UChar outChar; 453 if (reason == UCNV_UNASSIGNED && (outChar = fallbackForGBK(codePoint))) { 454 const UChar* source = &outChar; 455 *err = U_ZERO_ERROR; 456 ucnv_cbFromUWriteUChars(fromUArgs, &source, source + 1, 0, err); 457 return; 458 } 459 UCNV_FROM_U_CALLBACK_SUBSTITUTE(context, fromUArgs, codeUnits, length, codePoint, reason, err); 460 } 461 462 class TextCodecInput { 463 public: 464 TextCodecInput(const TextEncoding& encoding, const UChar* characters, size_t length) 465 : m_begin(characters) 466 , m_end(characters + length) 467 { } 468 469 TextCodecInput(const TextEncoding& encoding, const LChar* characters, size_t length) 470 { 471 m_buffer.reserveInitialCapacity(length); 472 for (size_t i = 0; i < length; ++i) 473 m_buffer.append(characters[i]); 474 m_begin = m_buffer.data(); 475 m_end = m_begin + m_buffer.size(); 476 } 477 478 const UChar* begin() const { return m_begin; } 479 const UChar* end() const { return m_end; } 480 481 private: 482 const UChar* m_begin; 483 const UChar* m_end; 484 Vector<UChar> m_buffer; 485 }; 486 487 CString TextCodecICU::encodeInternal(const TextCodecInput& input, UnencodableHandling handling) 488 { 489 const UChar* source = input.begin(); 490 const UChar* end = input.end(); 491 492 UErrorCode err = U_ZERO_ERROR; 493 494 switch (handling) { 495 case QuestionMarksForUnencodables: 496 ucnv_setSubstChars(m_converterICU, "?", 1, &err); 497 ucnv_setFromUCallBack(m_converterICU, m_needsGBKFallbacks ? gbkCallbackSubstitute : UCNV_FROM_U_CALLBACK_SUBSTITUTE, 0, 0, 0, &err); 498 break; 499 case EntitiesForUnencodables: 500 ucnv_setFromUCallBack(m_converterICU, m_needsGBKFallbacks ? gbkCallbackEscape : UCNV_FROM_U_CALLBACK_ESCAPE, UCNV_ESCAPE_XML_DEC, 0, 0, &err); 501 break; 502 case URLEncodedEntitiesForUnencodables: 503 ucnv_setFromUCallBack(m_converterICU, m_needsGBKFallbacks ? gbkUrlEscapedEntityCallack : urlEscapedEntityCallback, 0, 0, 0, &err); 504 break; 505 } 506 507 ASSERT(U_SUCCESS(err)); 508 if (U_FAILURE(err)) 509 return CString(); 510 511 Vector<char> result; 512 size_t size = 0; 513 do { 514 char buffer[ConversionBufferSize]; 515 char* target = buffer; 516 char* targetLimit = target + ConversionBufferSize; 517 err = U_ZERO_ERROR; 518 ucnv_fromUnicode(m_converterICU, &target, targetLimit, &source, end, 0, true, &err); 519 size_t count = target - buffer; 520 result.grow(size + count); 521 memcpy(result.data() + size, buffer, count); 522 size += count; 523 } while (err == U_BUFFER_OVERFLOW_ERROR); 524 525 return CString(result.data(), size); 526 } 527 528 template<typename CharType> 529 CString TextCodecICU::encodeCommon(const CharType* characters, size_t length, UnencodableHandling handling) 530 { 531 if (!length) 532 return ""; 533 534 if (!m_converterICU) 535 createICUConverter(); 536 if (!m_converterICU) 537 return CString(); 538 539 TextCodecInput input(m_encoding, characters, length); 540 return encodeInternal(input, handling); 541 } 542 543 CString TextCodecICU::encode(const UChar* characters, size_t length, UnencodableHandling handling) 544 { 545 return encodeCommon(characters, length, handling); 546 } 547 548 CString TextCodecICU::encode(const LChar* characters, size_t length, UnencodableHandling handling) 549 { 550 return encodeCommon(characters, length, handling); 551 } 552 553 } // namespace WTF 554
