1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #include "base/files/file_path.h" 6 7 #include <string.h> 8 #include <algorithm> 9 10 #include "base/logging.h" 11 #include "base/macros.h" 12 #include "base/pickle.h" 13 #include "base/strings/string_piece.h" 14 #include "base/strings/string_util.h" 15 #include "base/strings/sys_string_conversions.h" 16 #include "base/strings/utf_string_conversions.h" 17 #include "build/build_config.h" 18 19 #if defined(OS_MACOSX) 20 #include "base/mac/scoped_cftyperef.h" 21 #include "base/third_party/icu/icu_utf.h" 22 #endif 23 24 #if defined(OS_WIN) 25 #include <windows.h> 26 #elif defined(OS_MACOSX) 27 #include <CoreFoundation/CoreFoundation.h> 28 #endif 29 30 namespace base { 31 32 using StringType = FilePath::StringType; 33 using StringPieceType = FilePath::StringPieceType; 34 35 namespace { 36 37 const char* const kCommonDoubleExtensionSuffixes[] = { "gz", "z", "bz2", "bz" }; 38 const char* const kCommonDoubleExtensions[] = { "user.js" }; 39 40 const FilePath::CharType kStringTerminator = FILE_PATH_LITERAL('\0'); 41 42 // If this FilePath contains a drive letter specification, returns the 43 // position of the last character of the drive letter specification, 44 // otherwise returns npos. This can only be true on Windows, when a pathname 45 // begins with a letter followed by a colon. On other platforms, this always 46 // returns npos. 47 StringPieceType::size_type FindDriveLetter(StringPieceType path) { 48 #if defined(FILE_PATH_USES_DRIVE_LETTERS) 49 // This is dependent on an ASCII-based character set, but that's a 50 // reasonable assumption. iswalpha can be too inclusive here. 51 if (path.length() >= 2 && path[1] == L':' && 52 ((path[0] >= L'A' && path[0] <= L'Z') || 53 (path[0] >= L'a' && path[0] <= L'z'))) { 54 return 1; 55 } 56 #endif // FILE_PATH_USES_DRIVE_LETTERS 57 return StringType::npos; 58 } 59 60 #if defined(FILE_PATH_USES_DRIVE_LETTERS) 61 bool EqualDriveLetterCaseInsensitive(StringPieceType a, StringPieceType b) { 62 size_t a_letter_pos = FindDriveLetter(a); 63 size_t b_letter_pos = FindDriveLetter(b); 64 65 if (a_letter_pos == StringType::npos || b_letter_pos == StringType::npos) 66 return a == b; 67 68 StringPieceType a_letter(a.substr(0, a_letter_pos + 1)); 69 StringPieceType b_letter(b.substr(0, b_letter_pos + 1)); 70 if (!StartsWith(a_letter, b_letter, CompareCase::INSENSITIVE_ASCII)) 71 return false; 72 73 StringPieceType a_rest(a.substr(a_letter_pos + 1)); 74 StringPieceType b_rest(b.substr(b_letter_pos + 1)); 75 return a_rest == b_rest; 76 } 77 #endif // defined(FILE_PATH_USES_DRIVE_LETTERS) 78 79 bool IsPathAbsolute(StringPieceType path) { 80 #if defined(FILE_PATH_USES_DRIVE_LETTERS) 81 StringType::size_type letter = FindDriveLetter(path); 82 if (letter != StringType::npos) { 83 // Look for a separator right after the drive specification. 84 return path.length() > letter + 1 && 85 FilePath::IsSeparator(path[letter + 1]); 86 } 87 // Look for a pair of leading separators. 88 return path.length() > 1 && 89 FilePath::IsSeparator(path[0]) && FilePath::IsSeparator(path[1]); 90 #else // FILE_PATH_USES_DRIVE_LETTERS 91 // Look for a separator in the first position. 92 return path.length() > 0 && FilePath::IsSeparator(path[0]); 93 #endif // FILE_PATH_USES_DRIVE_LETTERS 94 } 95 96 bool AreAllSeparators(const StringType& input) { 97 for (StringType::const_iterator it = input.begin(); 98 it != input.end(); ++it) { 99 if (!FilePath::IsSeparator(*it)) 100 return false; 101 } 102 103 return true; 104 } 105 106 // Find the position of the '.' that separates the extension from the rest 107 // of the file name. The position is relative to BaseName(), not value(). 108 // Returns npos if it can't find an extension. 109 StringType::size_type FinalExtensionSeparatorPosition(const StringType& path) { 110 // Special case "." and ".." 111 if (path == FilePath::kCurrentDirectory || path == FilePath::kParentDirectory) 112 return StringType::npos; 113 114 return path.rfind(FilePath::kExtensionSeparator); 115 } 116 117 // Same as above, but allow a second extension component of up to 4 118 // characters when the rightmost extension component is a common double 119 // extension (gz, bz2, Z). For example, foo.tar.gz or foo.tar.Z would have 120 // extension components of '.tar.gz' and '.tar.Z' respectively. 121 StringType::size_type ExtensionSeparatorPosition(const StringType& path) { 122 const StringType::size_type last_dot = FinalExtensionSeparatorPosition(path); 123 124 // No extension, or the extension is the whole filename. 125 if (last_dot == StringType::npos || last_dot == 0U) 126 return last_dot; 127 128 const StringType::size_type penultimate_dot = 129 path.rfind(FilePath::kExtensionSeparator, last_dot - 1); 130 const StringType::size_type last_separator = 131 path.find_last_of(FilePath::kSeparators, last_dot - 1, 132 FilePath::kSeparatorsLength - 1); 133 134 if (penultimate_dot == StringType::npos || 135 (last_separator != StringType::npos && 136 penultimate_dot < last_separator)) { 137 return last_dot; 138 } 139 140 for (size_t i = 0; i < arraysize(kCommonDoubleExtensions); ++i) { 141 StringType extension(path, penultimate_dot + 1); 142 if (LowerCaseEqualsASCII(extension, kCommonDoubleExtensions[i])) 143 return penultimate_dot; 144 } 145 146 StringType extension(path, last_dot + 1); 147 for (size_t i = 0; i < arraysize(kCommonDoubleExtensionSuffixes); ++i) { 148 if (LowerCaseEqualsASCII(extension, kCommonDoubleExtensionSuffixes[i])) { 149 if ((last_dot - penultimate_dot) <= 5U && 150 (last_dot - penultimate_dot) > 1U) { 151 return penultimate_dot; 152 } 153 } 154 } 155 156 return last_dot; 157 } 158 159 // Returns true if path is "", ".", or "..". 160 bool IsEmptyOrSpecialCase(const StringType& path) { 161 // Special cases "", ".", and ".." 162 if (path.empty() || path == FilePath::kCurrentDirectory || 163 path == FilePath::kParentDirectory) { 164 return true; 165 } 166 167 return false; 168 } 169 170 } // namespace 171 172 FilePath::FilePath() = default; 173 174 FilePath::FilePath(const FilePath& that) = default; 175 FilePath::FilePath(FilePath&& that) noexcept = default; 176 177 FilePath::FilePath(StringPieceType path) { 178 path.CopyToString(&path_); 179 StringType::size_type nul_pos = path_.find(kStringTerminator); 180 if (nul_pos != StringType::npos) 181 path_.erase(nul_pos, StringType::npos); 182 } 183 184 FilePath::~FilePath() = default; 185 186 FilePath& FilePath::operator=(const FilePath& that) = default; 187 188 FilePath& FilePath::operator=(FilePath&& that) = default; 189 190 bool FilePath::operator==(const FilePath& that) const { 191 #if defined(FILE_PATH_USES_DRIVE_LETTERS) 192 return EqualDriveLetterCaseInsensitive(this->path_, that.path_); 193 #else // defined(FILE_PATH_USES_DRIVE_LETTERS) 194 return path_ == that.path_; 195 #endif // defined(FILE_PATH_USES_DRIVE_LETTERS) 196 } 197 198 bool FilePath::operator!=(const FilePath& that) const { 199 #if defined(FILE_PATH_USES_DRIVE_LETTERS) 200 return !EqualDriveLetterCaseInsensitive(this->path_, that.path_); 201 #else // defined(FILE_PATH_USES_DRIVE_LETTERS) 202 return path_ != that.path_; 203 #endif // defined(FILE_PATH_USES_DRIVE_LETTERS) 204 } 205 206 std::ostream& operator<<(std::ostream& out, const FilePath& file_path) { 207 return out << file_path.value(); 208 } 209 210 // static 211 bool FilePath::IsSeparator(CharType character) { 212 for (size_t i = 0; i < kSeparatorsLength - 1; ++i) { 213 if (character == kSeparators[i]) { 214 return true; 215 } 216 } 217 218 return false; 219 } 220 221 void FilePath::GetComponents(std::vector<StringType>* components) const { 222 DCHECK(components); 223 if (!components) 224 return; 225 components->clear(); 226 if (value().empty()) 227 return; 228 229 std::vector<StringType> ret_val; 230 FilePath current = *this; 231 FilePath base; 232 233 // Capture path components. 234 while (current != current.DirName()) { 235 base = current.BaseName(); 236 if (!AreAllSeparators(base.value())) 237 ret_val.push_back(base.value()); 238 current = current.DirName(); 239 } 240 241 // Capture root, if any. 242 base = current.BaseName(); 243 if (!base.value().empty() && base.value() != kCurrentDirectory) 244 ret_val.push_back(current.BaseName().value()); 245 246 // Capture drive letter, if any. 247 FilePath dir = current.DirName(); 248 StringType::size_type letter = FindDriveLetter(dir.value()); 249 if (letter != StringType::npos) { 250 ret_val.push_back(StringType(dir.value(), 0, letter + 1)); 251 } 252 253 *components = std::vector<StringType>(ret_val.rbegin(), ret_val.rend()); 254 } 255 256 bool FilePath::IsParent(const FilePath& child) const { 257 return AppendRelativePath(child, nullptr); 258 } 259 260 bool FilePath::AppendRelativePath(const FilePath& child, 261 FilePath* path) const { 262 std::vector<StringType> parent_components; 263 std::vector<StringType> child_components; 264 GetComponents(&parent_components); 265 child.GetComponents(&child_components); 266 267 if (parent_components.empty() || 268 parent_components.size() >= child_components.size()) 269 return false; 270 271 std::vector<StringType>::const_iterator parent_comp = 272 parent_components.begin(); 273 std::vector<StringType>::const_iterator child_comp = 274 child_components.begin(); 275 276 #if defined(FILE_PATH_USES_DRIVE_LETTERS) 277 // Windows can access case sensitive filesystems, so component 278 // comparisions must be case sensitive, but drive letters are 279 // never case sensitive. 280 if ((FindDriveLetter(*parent_comp) != StringType::npos) && 281 (FindDriveLetter(*child_comp) != StringType::npos)) { 282 if (!StartsWith(*parent_comp, *child_comp, CompareCase::INSENSITIVE_ASCII)) 283 return false; 284 ++parent_comp; 285 ++child_comp; 286 } 287 #endif // defined(FILE_PATH_USES_DRIVE_LETTERS) 288 289 while (parent_comp != parent_components.end()) { 290 if (*parent_comp != *child_comp) 291 return false; 292 ++parent_comp; 293 ++child_comp; 294 } 295 296 if (path != nullptr) { 297 for (; child_comp != child_components.end(); ++child_comp) { 298 *path = path->Append(*child_comp); 299 } 300 } 301 return true; 302 } 303 304 // libgen's dirname and basename aren't guaranteed to be thread-safe and aren't 305 // guaranteed to not modify their input strings, and in fact are implemented 306 // differently in this regard on different platforms. Don't use them, but 307 // adhere to their behavior. 308 FilePath FilePath::DirName() const { 309 FilePath new_path(path_); 310 new_path.StripTrailingSeparatorsInternal(); 311 312 // The drive letter, if any, always needs to remain in the output. If there 313 // is no drive letter, as will always be the case on platforms which do not 314 // support drive letters, letter will be npos, or -1, so the comparisons and 315 // resizes below using letter will still be valid. 316 StringType::size_type letter = FindDriveLetter(new_path.path_); 317 318 StringType::size_type last_separator = 319 new_path.path_.find_last_of(kSeparators, StringType::npos, 320 kSeparatorsLength - 1); 321 if (last_separator == StringType::npos) { 322 // path_ is in the current directory. 323 new_path.path_.resize(letter + 1); 324 } else if (last_separator == letter + 1) { 325 // path_ is in the root directory. 326 new_path.path_.resize(letter + 2); 327 } else if (last_separator == letter + 2 && 328 IsSeparator(new_path.path_[letter + 1])) { 329 // path_ is in "//" (possibly with a drive letter); leave the double 330 // separator intact indicating alternate root. 331 new_path.path_.resize(letter + 3); 332 } else if (last_separator != 0) { 333 // path_ is somewhere else, trim the basename. 334 new_path.path_.resize(last_separator); 335 } 336 337 new_path.StripTrailingSeparatorsInternal(); 338 if (!new_path.path_.length()) 339 new_path.path_ = kCurrentDirectory; 340 341 return new_path; 342 } 343 344 FilePath FilePath::BaseName() const { 345 FilePath new_path(path_); 346 new_path.StripTrailingSeparatorsInternal(); 347 348 // The drive letter, if any, is always stripped. 349 StringType::size_type letter = FindDriveLetter(new_path.path_); 350 if (letter != StringType::npos) { 351 new_path.path_.erase(0, letter + 1); 352 } 353 354 // Keep everything after the final separator, but if the pathname is only 355 // one character and it's a separator, leave it alone. 356 StringType::size_type last_separator = 357 new_path.path_.find_last_of(kSeparators, StringType::npos, 358 kSeparatorsLength - 1); 359 if (last_separator != StringType::npos && 360 last_separator < new_path.path_.length() - 1) { 361 new_path.path_.erase(0, last_separator + 1); 362 } 363 364 return new_path; 365 } 366 367 StringType FilePath::Extension() const { 368 FilePath base(BaseName()); 369 const StringType::size_type dot = ExtensionSeparatorPosition(base.path_); 370 if (dot == StringType::npos) 371 return StringType(); 372 373 return base.path_.substr(dot, StringType::npos); 374 } 375 376 StringType FilePath::FinalExtension() const { 377 FilePath base(BaseName()); 378 const StringType::size_type dot = FinalExtensionSeparatorPosition(base.path_); 379 if (dot == StringType::npos) 380 return StringType(); 381 382 return base.path_.substr(dot, StringType::npos); 383 } 384 385 FilePath FilePath::RemoveExtension() const { 386 if (Extension().empty()) 387 return *this; 388 389 const StringType::size_type dot = ExtensionSeparatorPosition(path_); 390 if (dot == StringType::npos) 391 return *this; 392 393 return FilePath(path_.substr(0, dot)); 394 } 395 396 FilePath FilePath::RemoveFinalExtension() const { 397 if (FinalExtension().empty()) 398 return *this; 399 400 const StringType::size_type dot = FinalExtensionSeparatorPosition(path_); 401 if (dot == StringType::npos) 402 return *this; 403 404 return FilePath(path_.substr(0, dot)); 405 } 406 407 FilePath FilePath::InsertBeforeExtension(StringPieceType suffix) const { 408 if (suffix.empty()) 409 return FilePath(path_); 410 411 if (IsEmptyOrSpecialCase(BaseName().value())) 412 return FilePath(); 413 414 StringType ext = Extension(); 415 StringType ret = RemoveExtension().value(); 416 suffix.AppendToString(&ret); 417 ret.append(ext); 418 return FilePath(ret); 419 } 420 421 FilePath FilePath::InsertBeforeExtensionASCII(StringPiece suffix) 422 const { 423 DCHECK(IsStringASCII(suffix)); 424 #if defined(OS_WIN) 425 return InsertBeforeExtension(ASCIIToUTF16(suffix)); 426 #elif defined(OS_POSIX) || defined(OS_FUCHSIA) 427 return InsertBeforeExtension(suffix); 428 #endif 429 } 430 431 FilePath FilePath::AddExtension(StringPieceType extension) const { 432 if (IsEmptyOrSpecialCase(BaseName().value())) 433 return FilePath(); 434 435 // If the new extension is "" or ".", then just return the current FilePath. 436 if (extension.empty() || 437 (extension.size() == 1 && extension[0] == kExtensionSeparator)) 438 return *this; 439 440 StringType str = path_; 441 if (extension[0] != kExtensionSeparator && 442 *(str.end() - 1) != kExtensionSeparator) { 443 str.append(1, kExtensionSeparator); 444 } 445 extension.AppendToString(&str); 446 return FilePath(str); 447 } 448 449 FilePath FilePath::ReplaceExtension(StringPieceType extension) const { 450 if (IsEmptyOrSpecialCase(BaseName().value())) 451 return FilePath(); 452 453 FilePath no_ext = RemoveExtension(); 454 // If the new extension is "" or ".", then just remove the current extension. 455 if (extension.empty() || 456 (extension.size() == 1 && extension[0] == kExtensionSeparator)) 457 return no_ext; 458 459 StringType str = no_ext.value(); 460 if (extension[0] != kExtensionSeparator) 461 str.append(1, kExtensionSeparator); 462 extension.AppendToString(&str); 463 return FilePath(str); 464 } 465 466 bool FilePath::MatchesExtension(StringPieceType extension) const { 467 DCHECK(extension.empty() || extension[0] == kExtensionSeparator); 468 469 StringType current_extension = Extension(); 470 471 if (current_extension.length() != extension.length()) 472 return false; 473 474 return FilePath::CompareEqualIgnoreCase(extension, current_extension); 475 } 476 477 FilePath FilePath::Append(StringPieceType component) const { 478 StringPieceType appended = component; 479 StringType without_nuls; 480 481 StringType::size_type nul_pos = component.find(kStringTerminator); 482 if (nul_pos != StringPieceType::npos) { 483 component.substr(0, nul_pos).CopyToString(&without_nuls); 484 appended = StringPieceType(without_nuls); 485 } 486 487 DCHECK(!IsPathAbsolute(appended)); 488 489 if (path_.compare(kCurrentDirectory) == 0 && !appended.empty()) { 490 // Append normally doesn't do any normalization, but as a special case, 491 // when appending to kCurrentDirectory, just return a new path for the 492 // component argument. Appending component to kCurrentDirectory would 493 // serve no purpose other than needlessly lengthening the path, and 494 // it's likely in practice to wind up with FilePath objects containing 495 // only kCurrentDirectory when calling DirName on a single relative path 496 // component. 497 return FilePath(appended); 498 } 499 500 FilePath new_path(path_); 501 new_path.StripTrailingSeparatorsInternal(); 502 503 // Don't append a separator if the path is empty (indicating the current 504 // directory) or if the path component is empty (indicating nothing to 505 // append). 506 if (!appended.empty() && !new_path.path_.empty()) { 507 // Don't append a separator if the path still ends with a trailing 508 // separator after stripping (indicating the root directory). 509 if (!IsSeparator(new_path.path_.back())) { 510 // Don't append a separator if the path is just a drive letter. 511 if (FindDriveLetter(new_path.path_) + 1 != new_path.path_.length()) { 512 new_path.path_.append(1, kSeparators[0]); 513 } 514 } 515 } 516 517 appended.AppendToString(&new_path.path_); 518 return new_path; 519 } 520 521 FilePath FilePath::Append(const FilePath& component) const { 522 return Append(component.value()); 523 } 524 525 FilePath FilePath::AppendASCII(StringPiece component) const { 526 DCHECK(base::IsStringASCII(component)); 527 #if defined(OS_WIN) 528 return Append(ASCIIToUTF16(component)); 529 #elif defined(OS_POSIX) || defined(OS_FUCHSIA) 530 return Append(component); 531 #endif 532 } 533 534 bool FilePath::IsAbsolute() const { 535 return IsPathAbsolute(path_); 536 } 537 538 bool FilePath::EndsWithSeparator() const { 539 if (empty()) 540 return false; 541 return IsSeparator(path_.back()); 542 } 543 544 FilePath FilePath::AsEndingWithSeparator() const { 545 if (EndsWithSeparator() || path_.empty()) 546 return *this; 547 548 StringType path_str; 549 path_str.reserve(path_.length() + 1); // Only allocate string once. 550 551 path_str = path_; 552 path_str.append(&kSeparators[0], 1); 553 return FilePath(path_str); 554 } 555 556 FilePath FilePath::StripTrailingSeparators() const { 557 FilePath new_path(path_); 558 new_path.StripTrailingSeparatorsInternal(); 559 560 return new_path; 561 } 562 563 bool FilePath::ReferencesParent() const { 564 if (path_.find(kParentDirectory) == StringType::npos) { 565 // GetComponents is quite expensive, so avoid calling it in the majority 566 // of cases where there isn't a kParentDirectory anywhere in the path. 567 return false; 568 } 569 570 std::vector<StringType> components; 571 GetComponents(&components); 572 573 std::vector<StringType>::const_iterator it = components.begin(); 574 for (; it != components.end(); ++it) { 575 const StringType& component = *it; 576 // Windows has odd, undocumented behavior with path components containing 577 // only whitespace and . characters. So, if all we see is . and 578 // whitespace, then we treat any .. sequence as referencing parent. 579 // For simplicity we enforce this on all platforms. 580 if (component.find_first_not_of(FILE_PATH_LITERAL(". \n\r\t")) == 581 std::string::npos && 582 component.find(kParentDirectory) != std::string::npos) { 583 return true; 584 } 585 } 586 return false; 587 } 588 589 #if defined(OS_WIN) 590 591 string16 FilePath::LossyDisplayName() const { 592 return path_; 593 } 594 595 std::string FilePath::MaybeAsASCII() const { 596 if (base::IsStringASCII(path_)) 597 return UTF16ToASCII(path_); 598 return std::string(); 599 } 600 601 std::string FilePath::AsUTF8Unsafe() const { 602 return WideToUTF8(value()); 603 } 604 605 string16 FilePath::AsUTF16Unsafe() const { 606 return value(); 607 } 608 609 // static 610 FilePath FilePath::FromUTF8Unsafe(StringPiece utf8) { 611 return FilePath(UTF8ToWide(utf8)); 612 } 613 614 // static 615 FilePath FilePath::FromUTF16Unsafe(StringPiece16 utf16) { 616 return FilePath(utf16); 617 } 618 619 #elif defined(OS_POSIX) || defined(OS_FUCHSIA) 620 621 // See file_path.h for a discussion of the encoding of paths on POSIX 622 // platforms. These encoding conversion functions are not quite correct. 623 624 string16 FilePath::LossyDisplayName() const { 625 return WideToUTF16(SysNativeMBToWide(path_)); 626 } 627 628 std::string FilePath::MaybeAsASCII() const { 629 if (base::IsStringASCII(path_)) 630 return path_; 631 return std::string(); 632 } 633 634 std::string FilePath::AsUTF8Unsafe() const { 635 #if defined(SYSTEM_NATIVE_UTF8) 636 return value(); 637 #else 638 return WideToUTF8(SysNativeMBToWide(value())); 639 #endif 640 } 641 642 string16 FilePath::AsUTF16Unsafe() const { 643 #if defined(SYSTEM_NATIVE_UTF8) 644 return UTF8ToUTF16(value()); 645 #else 646 return WideToUTF16(SysNativeMBToWide(value())); 647 #endif 648 } 649 650 // static 651 FilePath FilePath::FromUTF8Unsafe(StringPiece utf8) { 652 #if defined(SYSTEM_NATIVE_UTF8) 653 return FilePath(utf8); 654 #else 655 return FilePath(SysWideToNativeMB(UTF8ToWide(utf8))); 656 #endif 657 } 658 659 // static 660 FilePath FilePath::FromUTF16Unsafe(StringPiece16 utf16) { 661 #if defined(SYSTEM_NATIVE_UTF8) 662 return FilePath(UTF16ToUTF8(utf16)); 663 #else 664 return FilePath(SysWideToNativeMB(UTF16ToWide(utf16.as_string()))); 665 #endif 666 } 667 668 #endif // defined(OS_WIN) 669 670 void FilePath::WriteToPickle(Pickle* pickle) const { 671 #if defined(OS_WIN) 672 pickle->WriteString16(path_); 673 #elif defined(OS_POSIX) || defined(OS_FUCHSIA) 674 pickle->WriteString(path_); 675 #else 676 #error Unsupported platform 677 #endif 678 } 679 680 bool FilePath::ReadFromPickle(PickleIterator* iter) { 681 #if defined(OS_WIN) 682 if (!iter->ReadString16(&path_)) 683 return false; 684 #elif defined(OS_POSIX) || defined(OS_FUCHSIA) 685 if (!iter->ReadString(&path_)) 686 return false; 687 #else 688 #error Unsupported platform 689 #endif 690 691 if (path_.find(kStringTerminator) != StringType::npos) 692 return false; 693 694 return true; 695 } 696 697 #if defined(OS_WIN) 698 // Windows specific implementation of file string comparisons. 699 700 int FilePath::CompareIgnoreCase(StringPieceType string1, 701 StringPieceType string2) { 702 static decltype(::CharUpperW)* const char_upper_api = 703 reinterpret_cast<decltype(::CharUpperW)*>( 704 ::GetProcAddress(::GetModuleHandle(L"user32.dll"), "CharUpperW")); 705 CHECK(char_upper_api); 706 // Perform character-wise upper case comparison rather than using the 707 // fully Unicode-aware CompareString(). For details see: 708 // http://blogs.msdn.com/michkap/archive/2005/10/17/481600.aspx 709 StringPieceType::const_iterator i1 = string1.begin(); 710 StringPieceType::const_iterator i2 = string2.begin(); 711 StringPieceType::const_iterator string1end = string1.end(); 712 StringPieceType::const_iterator string2end = string2.end(); 713 for ( ; i1 != string1end && i2 != string2end; ++i1, ++i2) { 714 wchar_t c1 = 715 (wchar_t)LOWORD(char_upper_api((LPWSTR)(DWORD_PTR)MAKELONG(*i1, 0))); 716 wchar_t c2 = 717 (wchar_t)LOWORD(char_upper_api((LPWSTR)(DWORD_PTR)MAKELONG(*i2, 0))); 718 if (c1 < c2) 719 return -1; 720 if (c1 > c2) 721 return 1; 722 } 723 if (i1 != string1end) 724 return 1; 725 if (i2 != string2end) 726 return -1; 727 return 0; 728 } 729 730 #elif defined(OS_MACOSX) 731 // Mac OS X specific implementation of file string comparisons. 732 733 // cf. http://developer.apple.com/mac/library/technotes/tn/tn1150.html#UnicodeSubtleties 734 // 735 // "When using CreateTextEncoding to create a text encoding, you should set 736 // the TextEncodingBase to kTextEncodingUnicodeV2_0, set the 737 // TextEncodingVariant to kUnicodeCanonicalDecompVariant, and set the 738 // TextEncodingFormat to kUnicode16BitFormat. Using these values ensures that 739 // the Unicode will be in the same form as on an HFS Plus volume, even as the 740 // Unicode standard evolves." 741 // 742 // Another technical article for X 10.4 updates this: one should use 743 // the new (unambiguous) kUnicodeHFSPlusDecompVariant. 744 // cf. http://developer.apple.com/mac/library/releasenotes/TextFonts/RN-TEC/index.html 745 // 746 // This implementation uses CFStringGetFileSystemRepresentation() to get the 747 // decomposed form, and an adapted version of the FastUnicodeCompare as 748 // described in the tech note to compare the strings. 749 750 // Character conversion table for FastUnicodeCompare() 751 // 752 // The lower case table consists of a 256-entry high-byte table followed by 753 // some number of 256-entry subtables. The high-byte table contains either an 754 // offset to the subtable for characters with that high byte or zero, which 755 // means that there are no case mappings or ignored characters in that block. 756 // Ignored characters are mapped to zero. 757 // 758 // cf. downloadable file linked in 759 // http://developer.apple.com/mac/library/technotes/tn/tn1150.html#StringComparisonAlgorithm 760 761 namespace { 762 763 const UInt16 lower_case_table[] = { 764 // High-byte indices ( == 0 iff no case mapping and no ignorables ) 765 766 /* 0 */ 0x0100, 0x0200, 0x0000, 0x0300, 0x0400, 0x0500, 0x0000, 0x0000, 767 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 768 /* 1 */ 0x0600, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 769 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 770 /* 2 */ 0x0700, 0x0800, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 771 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 772 /* 3 */ 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 773 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 774 /* 4 */ 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 775 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 776 /* 5 */ 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 777 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 778 /* 6 */ 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 779 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 780 /* 7 */ 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 781 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 782 /* 8 */ 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 783 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 784 /* 9 */ 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 785 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 786 /* A */ 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 787 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 788 /* B */ 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 789 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 790 /* C */ 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 791 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 792 /* D */ 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 793 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 794 /* E */ 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 795 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 796 /* F */ 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 797 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0900, 0x0A00, 798 799 // Table 1 (for high byte 0x00) 800 801 /* 0 */ 0xFFFF, 0x0001, 0x0002, 0x0003, 0x0004, 0x0005, 0x0006, 0x0007, 802 0x0008, 0x0009, 0x000A, 0x000B, 0x000C, 0x000D, 0x000E, 0x000F, 803 /* 1 */ 0x0010, 0x0011, 0x0012, 0x0013, 0x0014, 0x0015, 0x0016, 0x0017, 804 0x0018, 0x0019, 0x001A, 0x001B, 0x001C, 0x001D, 0x001E, 0x001F, 805 /* 2 */ 0x0020, 0x0021, 0x0022, 0x0023, 0x0024, 0x0025, 0x0026, 0x0027, 806 0x0028, 0x0029, 0x002A, 0x002B, 0x002C, 0x002D, 0x002E, 0x002F, 807 /* 3 */ 0x0030, 0x0031, 0x0032, 0x0033, 0x0034, 0x0035, 0x0036, 0x0037, 808 0x0038, 0x0039, 0x003A, 0x003B, 0x003C, 0x003D, 0x003E, 0x003F, 809 /* 4 */ 0x0040, 0x0061, 0x0062, 0x0063, 0x0064, 0x0065, 0x0066, 0x0067, 810 0x0068, 0x0069, 0x006A, 0x006B, 0x006C, 0x006D, 0x006E, 0x006F, 811 /* 5 */ 0x0070, 0x0071, 0x0072, 0x0073, 0x0074, 0x0075, 0x0076, 0x0077, 812 0x0078, 0x0079, 0x007A, 0x005B, 0x005C, 0x005D, 0x005E, 0x005F, 813 /* 6 */ 0x0060, 0x0061, 0x0062, 0x0063, 0x0064, 0x0065, 0x0066, 0x0067, 814 0x0068, 0x0069, 0x006A, 0x006B, 0x006C, 0x006D, 0x006E, 0x006F, 815 /* 7 */ 0x0070, 0x0071, 0x0072, 0x0073, 0x0074, 0x0075, 0x0076, 0x0077, 816 0x0078, 0x0079, 0x007A, 0x007B, 0x007C, 0x007D, 0x007E, 0x007F, 817 /* 8 */ 0x0080, 0x0081, 0x0082, 0x0083, 0x0084, 0x0085, 0x0086, 0x0087, 818 0x0088, 0x0089, 0x008A, 0x008B, 0x008C, 0x008D, 0x008E, 0x008F, 819 /* 9 */ 0x0090, 0x0091, 0x0092, 0x0093, 0x0094, 0x0095, 0x0096, 0x0097, 820 0x0098, 0x0099, 0x009A, 0x009B, 0x009C, 0x009D, 0x009E, 0x009F, 821 /* A */ 0x00A0, 0x00A1, 0x00A2, 0x00A3, 0x00A4, 0x00A5, 0x00A6, 0x00A7, 822 0x00A8, 0x00A9, 0x00AA, 0x00AB, 0x00AC, 0x00AD, 0x00AE, 0x00AF, 823 /* B */ 0x00B0, 0x00B1, 0x00B2, 0x00B3, 0x00B4, 0x00B5, 0x00B6, 0x00B7, 824 0x00B8, 0x00B9, 0x00BA, 0x00BB, 0x00BC, 0x00BD, 0x00BE, 0x00BF, 825 /* C */ 0x00C0, 0x00C1, 0x00C2, 0x00C3, 0x00C4, 0x00C5, 0x00E6, 0x00C7, 826 0x00C8, 0x00C9, 0x00CA, 0x00CB, 0x00CC, 0x00CD, 0x00CE, 0x00CF, 827 /* D */ 0x00F0, 0x00D1, 0x00D2, 0x00D3, 0x00D4, 0x00D5, 0x00D6, 0x00D7, 828 0x00F8, 0x00D9, 0x00DA, 0x00DB, 0x00DC, 0x00DD, 0x00FE, 0x00DF, 829 /* E */ 0x00E0, 0x00E1, 0x00E2, 0x00E3, 0x00E4, 0x00E5, 0x00E6, 0x00E7, 830 0x00E8, 0x00E9, 0x00EA, 0x00EB, 0x00EC, 0x00ED, 0x00EE, 0x00EF, 831 /* F */ 0x00F0, 0x00F1, 0x00F2, 0x00F3, 0x00F4, 0x00F5, 0x00F6, 0x00F7, 832 0x00F8, 0x00F9, 0x00FA, 0x00FB, 0x00FC, 0x00FD, 0x00FE, 0x00FF, 833 834 // Table 2 (for high byte 0x01) 835 836 /* 0 */ 0x0100, 0x0101, 0x0102, 0x0103, 0x0104, 0x0105, 0x0106, 0x0107, 837 0x0108, 0x0109, 0x010A, 0x010B, 0x010C, 0x010D, 0x010E, 0x010F, 838 /* 1 */ 0x0111, 0x0111, 0x0112, 0x0113, 0x0114, 0x0115, 0x0116, 0x0117, 839 0x0118, 0x0119, 0x011A, 0x011B, 0x011C, 0x011D, 0x011E, 0x011F, 840 /* 2 */ 0x0120, 0x0121, 0x0122, 0x0123, 0x0124, 0x0125, 0x0127, 0x0127, 841 0x0128, 0x0129, 0x012A, 0x012B, 0x012C, 0x012D, 0x012E, 0x012F, 842 /* 3 */ 0x0130, 0x0131, 0x0133, 0x0133, 0x0134, 0x0135, 0x0136, 0x0137, 843 0x0138, 0x0139, 0x013A, 0x013B, 0x013C, 0x013D, 0x013E, 0x0140, 844 /* 4 */ 0x0140, 0x0142, 0x0142, 0x0143, 0x0144, 0x0145, 0x0146, 0x0147, 845 0x0148, 0x0149, 0x014B, 0x014B, 0x014C, 0x014D, 0x014E, 0x014F, 846 /* 5 */ 0x0150, 0x0151, 0x0153, 0x0153, 0x0154, 0x0155, 0x0156, 0x0157, 847 0x0158, 0x0159, 0x015A, 0x015B, 0x015C, 0x015D, 0x015E, 0x015F, 848 /* 6 */ 0x0160, 0x0161, 0x0162, 0x0163, 0x0164, 0x0165, 0x0167, 0x0167, 849 0x0168, 0x0169, 0x016A, 0x016B, 0x016C, 0x016D, 0x016E, 0x016F, 850 /* 7 */ 0x0170, 0x0171, 0x0172, 0x0173, 0x0174, 0x0175, 0x0176, 0x0177, 851 0x0178, 0x0179, 0x017A, 0x017B, 0x017C, 0x017D, 0x017E, 0x017F, 852 /* 8 */ 0x0180, 0x0253, 0x0183, 0x0183, 0x0185, 0x0185, 0x0254, 0x0188, 853 0x0188, 0x0256, 0x0257, 0x018C, 0x018C, 0x018D, 0x01DD, 0x0259, 854 /* 9 */ 0x025B, 0x0192, 0x0192, 0x0260, 0x0263, 0x0195, 0x0269, 0x0268, 855 0x0199, 0x0199, 0x019A, 0x019B, 0x026F, 0x0272, 0x019E, 0x0275, 856 /* A */ 0x01A0, 0x01A1, 0x01A3, 0x01A3, 0x01A5, 0x01A5, 0x01A6, 0x01A8, 857 0x01A8, 0x0283, 0x01AA, 0x01AB, 0x01AD, 0x01AD, 0x0288, 0x01AF, 858 /* B */ 0x01B0, 0x028A, 0x028B, 0x01B4, 0x01B4, 0x01B6, 0x01B6, 0x0292, 859 0x01B9, 0x01B9, 0x01BA, 0x01BB, 0x01BD, 0x01BD, 0x01BE, 0x01BF, 860 /* C */ 0x01C0, 0x01C1, 0x01C2, 0x01C3, 0x01C6, 0x01C6, 0x01C6, 0x01C9, 861 0x01C9, 0x01C9, 0x01CC, 0x01CC, 0x01CC, 0x01CD, 0x01CE, 0x01CF, 862 /* D */ 0x01D0, 0x01D1, 0x01D2, 0x01D3, 0x01D4, 0x01D5, 0x01D6, 0x01D7, 863 0x01D8, 0x01D9, 0x01DA, 0x01DB, 0x01DC, 0x01DD, 0x01DE, 0x01DF, 864 /* E */ 0x01E0, 0x01E1, 0x01E2, 0x01E3, 0x01E5, 0x01E5, 0x01E6, 0x01E7, 865 0x01E8, 0x01E9, 0x01EA, 0x01EB, 0x01EC, 0x01ED, 0x01EE, 0x01EF, 866 /* F */ 0x01F0, 0x01F3, 0x01F3, 0x01F3, 0x01F4, 0x01F5, 0x01F6, 0x01F7, 867 0x01F8, 0x01F9, 0x01FA, 0x01FB, 0x01FC, 0x01FD, 0x01FE, 0x01FF, 868 869 // Table 3 (for high byte 0x03) 870 871 /* 0 */ 0x0300, 0x0301, 0x0302, 0x0303, 0x0304, 0x0305, 0x0306, 0x0307, 872 0x0308, 0x0309, 0x030A, 0x030B, 0x030C, 0x030D, 0x030E, 0x030F, 873 /* 1 */ 0x0310, 0x0311, 0x0312, 0x0313, 0x0314, 0x0315, 0x0316, 0x0317, 874 0x0318, 0x0319, 0x031A, 0x031B, 0x031C, 0x031D, 0x031E, 0x031F, 875 /* 2 */ 0x0320, 0x0321, 0x0322, 0x0323, 0x0324, 0x0325, 0x0326, 0x0327, 876 0x0328, 0x0329, 0x032A, 0x032B, 0x032C, 0x032D, 0x032E, 0x032F, 877 /* 3 */ 0x0330, 0x0331, 0x0332, 0x0333, 0x0334, 0x0335, 0x0336, 0x0337, 878 0x0338, 0x0339, 0x033A, 0x033B, 0x033C, 0x033D, 0x033E, 0x033F, 879 /* 4 */ 0x0340, 0x0341, 0x0342, 0x0343, 0x0344, 0x0345, 0x0346, 0x0347, 880 0x0348, 0x0349, 0x034A, 0x034B, 0x034C, 0x034D, 0x034E, 0x034F, 881 /* 5 */ 0x0350, 0x0351, 0x0352, 0x0353, 0x0354, 0x0355, 0x0356, 0x0357, 882 0x0358, 0x0359, 0x035A, 0x035B, 0x035C, 0x035D, 0x035E, 0x035F, 883 /* 6 */ 0x0360, 0x0361, 0x0362, 0x0363, 0x0364, 0x0365, 0x0366, 0x0367, 884 0x0368, 0x0369, 0x036A, 0x036B, 0x036C, 0x036D, 0x036E, 0x036F, 885 /* 7 */ 0x0370, 0x0371, 0x0372, 0x0373, 0x0374, 0x0375, 0x0376, 0x0377, 886 0x0378, 0x0379, 0x037A, 0x037B, 0x037C, 0x037D, 0x037E, 0x037F, 887 /* 8 */ 0x0380, 0x0381, 0x0382, 0x0383, 0x0384, 0x0385, 0x0386, 0x0387, 888 0x0388, 0x0389, 0x038A, 0x038B, 0x038C, 0x038D, 0x038E, 0x038F, 889 /* 9 */ 0x0390, 0x03B1, 0x03B2, 0x03B3, 0x03B4, 0x03B5, 0x03B6, 0x03B7, 890 0x03B8, 0x03B9, 0x03BA, 0x03BB, 0x03BC, 0x03BD, 0x03BE, 0x03BF, 891 /* A */ 0x03C0, 0x03C1, 0x03A2, 0x03C3, 0x03C4, 0x03C5, 0x03C6, 0x03C7, 892 0x03C8, 0x03C9, 0x03AA, 0x03AB, 0x03AC, 0x03AD, 0x03AE, 0x03AF, 893 /* B */ 0x03B0, 0x03B1, 0x03B2, 0x03B3, 0x03B4, 0x03B5, 0x03B6, 0x03B7, 894 0x03B8, 0x03B9, 0x03BA, 0x03BB, 0x03BC, 0x03BD, 0x03BE, 0x03BF, 895 /* C */ 0x03C0, 0x03C1, 0x03C2, 0x03C3, 0x03C4, 0x03C5, 0x03C6, 0x03C7, 896 0x03C8, 0x03C9, 0x03CA, 0x03CB, 0x03CC, 0x03CD, 0x03CE, 0x03CF, 897 /* D */ 0x03D0, 0x03D1, 0x03D2, 0x03D3, 0x03D4, 0x03D5, 0x03D6, 0x03D7, 898 0x03D8, 0x03D9, 0x03DA, 0x03DB, 0x03DC, 0x03DD, 0x03DE, 0x03DF, 899 /* E */ 0x03E0, 0x03E1, 0x03E3, 0x03E3, 0x03E5, 0x03E5, 0x03E7, 0x03E7, 900 0x03E9, 0x03E9, 0x03EB, 0x03EB, 0x03ED, 0x03ED, 0x03EF, 0x03EF, 901 /* F */ 0x03F0, 0x03F1, 0x03F2, 0x03F3, 0x03F4, 0x03F5, 0x03F6, 0x03F7, 902 0x03F8, 0x03F9, 0x03FA, 0x03FB, 0x03FC, 0x03FD, 0x03FE, 0x03FF, 903 904 // Table 4 (for high byte 0x04) 905 906 /* 0 */ 0x0400, 0x0401, 0x0452, 0x0403, 0x0454, 0x0455, 0x0456, 0x0407, 907 0x0458, 0x0459, 0x045A, 0x045B, 0x040C, 0x040D, 0x040E, 0x045F, 908 /* 1 */ 0x0430, 0x0431, 0x0432, 0x0433, 0x0434, 0x0435, 0x0436, 0x0437, 909 0x0438, 0x0419, 0x043A, 0x043B, 0x043C, 0x043D, 0x043E, 0x043F, 910 /* 2 */ 0x0440, 0x0441, 0x0442, 0x0443, 0x0444, 0x0445, 0x0446, 0x0447, 911 0x0448, 0x0449, 0x044A, 0x044B, 0x044C, 0x044D, 0x044E, 0x044F, 912 /* 3 */ 0x0430, 0x0431, 0x0432, 0x0433, 0x0434, 0x0435, 0x0436, 0x0437, 913 0x0438, 0x0439, 0x043A, 0x043B, 0x043C, 0x043D, 0x043E, 0x043F, 914 /* 4 */ 0x0440, 0x0441, 0x0442, 0x0443, 0x0444, 0x0445, 0x0446, 0x0447, 915 0x0448, 0x0449, 0x044A, 0x044B, 0x044C, 0x044D, 0x044E, 0x044F, 916 /* 5 */ 0x0450, 0x0451, 0x0452, 0x0453, 0x0454, 0x0455, 0x0456, 0x0457, 917 0x0458, 0x0459, 0x045A, 0x045B, 0x045C, 0x045D, 0x045E, 0x045F, 918 /* 6 */ 0x0461, 0x0461, 0x0463, 0x0463, 0x0465, 0x0465, 0x0467, 0x0467, 919 0x0469, 0x0469, 0x046B, 0x046B, 0x046D, 0x046D, 0x046F, 0x046F, 920 /* 7 */ 0x0471, 0x0471, 0x0473, 0x0473, 0x0475, 0x0475, 0x0476, 0x0477, 921 0x0479, 0x0479, 0x047B, 0x047B, 0x047D, 0x047D, 0x047F, 0x047F, 922 /* 8 */ 0x0481, 0x0481, 0x0482, 0x0483, 0x0484, 0x0485, 0x0486, 0x0487, 923 0x0488, 0x0489, 0x048A, 0x048B, 0x048C, 0x048D, 0x048E, 0x048F, 924 /* 9 */ 0x0491, 0x0491, 0x0493, 0x0493, 0x0495, 0x0495, 0x0497, 0x0497, 925 0x0499, 0x0499, 0x049B, 0x049B, 0x049D, 0x049D, 0x049F, 0x049F, 926 /* A */ 0x04A1, 0x04A1, 0x04A3, 0x04A3, 0x04A5, 0x04A5, 0x04A7, 0x04A7, 927 0x04A9, 0x04A9, 0x04AB, 0x04AB, 0x04AD, 0x04AD, 0x04AF, 0x04AF, 928 /* B */ 0x04B1, 0x04B1, 0x04B3, 0x04B3, 0x04B5, 0x04B5, 0x04B7, 0x04B7, 929 0x04B9, 0x04B9, 0x04BB, 0x04BB, 0x04BD, 0x04BD, 0x04BF, 0x04BF, 930 /* C */ 0x04C0, 0x04C1, 0x04C2, 0x04C4, 0x04C4, 0x04C5, 0x04C6, 0x04C8, 931 0x04C8, 0x04C9, 0x04CA, 0x04CC, 0x04CC, 0x04CD, 0x04CE, 0x04CF, 932 /* D */ 0x04D0, 0x04D1, 0x04D2, 0x04D3, 0x04D4, 0x04D5, 0x04D6, 0x04D7, 933 0x04D8, 0x04D9, 0x04DA, 0x04DB, 0x04DC, 0x04DD, 0x04DE, 0x04DF, 934 /* E */ 0x04E0, 0x04E1, 0x04E2, 0x04E3, 0x04E4, 0x04E5, 0x04E6, 0x04E7, 935 0x04E8, 0x04E9, 0x04EA, 0x04EB, 0x04EC, 0x04ED, 0x04EE, 0x04EF, 936 /* F */ 0x04F0, 0x04F1, 0x04F2, 0x04F3, 0x04F4, 0x04F5, 0x04F6, 0x04F7, 937 0x04F8, 0x04F9, 0x04FA, 0x04FB, 0x04FC, 0x04FD, 0x04FE, 0x04FF, 938 939 // Table 5 (for high byte 0x05) 940 941 /* 0 */ 0x0500, 0x0501, 0x0502, 0x0503, 0x0504, 0x0505, 0x0506, 0x0507, 942 0x0508, 0x0509, 0x050A, 0x050B, 0x050C, 0x050D, 0x050E, 0x050F, 943 /* 1 */ 0x0510, 0x0511, 0x0512, 0x0513, 0x0514, 0x0515, 0x0516, 0x0517, 944 0x0518, 0x0519, 0x051A, 0x051B, 0x051C, 0x051D, 0x051E, 0x051F, 945 /* 2 */ 0x0520, 0x0521, 0x0522, 0x0523, 0x0524, 0x0525, 0x0526, 0x0527, 946 0x0528, 0x0529, 0x052A, 0x052B, 0x052C, 0x052D, 0x052E, 0x052F, 947 /* 3 */ 0x0530, 0x0561, 0x0562, 0x0563, 0x0564, 0x0565, 0x0566, 0x0567, 948 0x0568, 0x0569, 0x056A, 0x056B, 0x056C, 0x056D, 0x056E, 0x056F, 949 /* 4 */ 0x0570, 0x0571, 0x0572, 0x0573, 0x0574, 0x0575, 0x0576, 0x0577, 950 0x0578, 0x0579, 0x057A, 0x057B, 0x057C, 0x057D, 0x057E, 0x057F, 951 /* 5 */ 0x0580, 0x0581, 0x0582, 0x0583, 0x0584, 0x0585, 0x0586, 0x0557, 952 0x0558, 0x0559, 0x055A, 0x055B, 0x055C, 0x055D, 0x055E, 0x055F, 953 /* 6 */ 0x0560, 0x0561, 0x0562, 0x0563, 0x0564, 0x0565, 0x0566, 0x0567, 954 0x0568, 0x0569, 0x056A, 0x056B, 0x056C, 0x056D, 0x056E, 0x056F, 955 /* 7 */ 0x0570, 0x0571, 0x0572, 0x0573, 0x0574, 0x0575, 0x0576, 0x0577, 956 0x0578, 0x0579, 0x057A, 0x057B, 0x057C, 0x057D, 0x057E, 0x057F, 957 /* 8 */ 0x0580, 0x0581, 0x0582, 0x0583, 0x0584, 0x0585, 0x0586, 0x0587, 958 0x0588, 0x0589, 0x058A, 0x058B, 0x058C, 0x058D, 0x058E, 0x058F, 959 /* 9 */ 0x0590, 0x0591, 0x0592, 0x0593, 0x0594, 0x0595, 0x0596, 0x0597, 960 0x0598, 0x0599, 0x059A, 0x059B, 0x059C, 0x059D, 0x059E, 0x059F, 961 /* A */ 0x05A0, 0x05A1, 0x05A2, 0x05A3, 0x05A4, 0x05A5, 0x05A6, 0x05A7, 962 0x05A8, 0x05A9, 0x05AA, 0x05AB, 0x05AC, 0x05AD, 0x05AE, 0x05AF, 963 /* B */ 0x05B0, 0x05B1, 0x05B2, 0x05B3, 0x05B4, 0x05B5, 0x05B6, 0x05B7, 964 0x05B8, 0x05B9, 0x05BA, 0x05BB, 0x05BC, 0x05BD, 0x05BE, 0x05BF, 965 /* C */ 0x05C0, 0x05C1, 0x05C2, 0x05C3, 0x05C4, 0x05C5, 0x05C6, 0x05C7, 966 0x05C8, 0x05C9, 0x05CA, 0x05CB, 0x05CC, 0x05CD, 0x05CE, 0x05CF, 967 /* D */ 0x05D0, 0x05D1, 0x05D2, 0x05D3, 0x05D4, 0x05D5, 0x05D6, 0x05D7, 968 0x05D8, 0x05D9, 0x05DA, 0x05DB, 0x05DC, 0x05DD, 0x05DE, 0x05DF, 969 /* E */ 0x05E0, 0x05E1, 0x05E2, 0x05E3, 0x05E4, 0x05E5, 0x05E6, 0x05E7, 970 0x05E8, 0x05E9, 0x05EA, 0x05EB, 0x05EC, 0x05ED, 0x05EE, 0x05EF, 971 /* F */ 0x05F0, 0x05F1, 0x05F2, 0x05F3, 0x05F4, 0x05F5, 0x05F6, 0x05F7, 972 0x05F8, 0x05F9, 0x05FA, 0x05FB, 0x05FC, 0x05FD, 0x05FE, 0x05FF, 973 974 // Table 6 (for high byte 0x10) 975 976 /* 0 */ 0x1000, 0x1001, 0x1002, 0x1003, 0x1004, 0x1005, 0x1006, 0x1007, 977 0x1008, 0x1009, 0x100A, 0x100B, 0x100C, 0x100D, 0x100E, 0x100F, 978 /* 1 */ 0x1010, 0x1011, 0x1012, 0x1013, 0x1014, 0x1015, 0x1016, 0x1017, 979 0x1018, 0x1019, 0x101A, 0x101B, 0x101C, 0x101D, 0x101E, 0x101F, 980 /* 2 */ 0x1020, 0x1021, 0x1022, 0x1023, 0x1024, 0x1025, 0x1026, 0x1027, 981 0x1028, 0x1029, 0x102A, 0x102B, 0x102C, 0x102D, 0x102E, 0x102F, 982 /* 3 */ 0x1030, 0x1031, 0x1032, 0x1033, 0x1034, 0x1035, 0x1036, 0x1037, 983 0x1038, 0x1039, 0x103A, 0x103B, 0x103C, 0x103D, 0x103E, 0x103F, 984 /* 4 */ 0x1040, 0x1041, 0x1042, 0x1043, 0x1044, 0x1045, 0x1046, 0x1047, 985 0x1048, 0x1049, 0x104A, 0x104B, 0x104C, 0x104D, 0x104E, 0x104F, 986 /* 5 */ 0x1050, 0x1051, 0x1052, 0x1053, 0x1054, 0x1055, 0x1056, 0x1057, 987 0x1058, 0x1059, 0x105A, 0x105B, 0x105C, 0x105D, 0x105E, 0x105F, 988 /* 6 */ 0x1060, 0x1061, 0x1062, 0x1063, 0x1064, 0x1065, 0x1066, 0x1067, 989 0x1068, 0x1069, 0x106A, 0x106B, 0x106C, 0x106D, 0x106E, 0x106F, 990 /* 7 */ 0x1070, 0x1071, 0x1072, 0x1073, 0x1074, 0x1075, 0x1076, 0x1077, 991 0x1078, 0x1079, 0x107A, 0x107B, 0x107C, 0x107D, 0x107E, 0x107F, 992 /* 8 */ 0x1080, 0x1081, 0x1082, 0x1083, 0x1084, 0x1085, 0x1086, 0x1087, 993 0x1088, 0x1089, 0x108A, 0x108B, 0x108C, 0x108D, 0x108E, 0x108F, 994 /* 9 */ 0x1090, 0x1091, 0x1092, 0x1093, 0x1094, 0x1095, 0x1096, 0x1097, 995 0x1098, 0x1099, 0x109A, 0x109B, 0x109C, 0x109D, 0x109E, 0x109F, 996 /* A */ 0x10D0, 0x10D1, 0x10D2, 0x10D3, 0x10D4, 0x10D5, 0x10D6, 0x10D7, 997 0x10D8, 0x10D9, 0x10DA, 0x10DB, 0x10DC, 0x10DD, 0x10DE, 0x10DF, 998 /* B */ 0x10E0, 0x10E1, 0x10E2, 0x10E3, 0x10E4, 0x10E5, 0x10E6, 0x10E7, 999 0x10E8, 0x10E9, 0x10EA, 0x10EB, 0x10EC, 0x10ED, 0x10EE, 0x10EF, 1000 /* C */ 0x10F0, 0x10F1, 0x10F2, 0x10F3, 0x10F4, 0x10F5, 0x10C6, 0x10C7, 1001 0x10C8, 0x10C9, 0x10CA, 0x10CB, 0x10CC, 0x10CD, 0x10CE, 0x10CF, 1002 /* D */ 0x10D0, 0x10D1, 0x10D2, 0x10D3, 0x10D4, 0x10D5, 0x10D6, 0x10D7, 1003 0x10D8, 0x10D9, 0x10DA, 0x10DB, 0x10DC, 0x10DD, 0x10DE, 0x10DF, 1004 /* E */ 0x10E0, 0x10E1, 0x10E2, 0x10E3, 0x10E4, 0x10E5, 0x10E6, 0x10E7, 1005 0x10E8, 0x10E9, 0x10EA, 0x10EB, 0x10EC, 0x10ED, 0x10EE, 0x10EF, 1006 /* F */ 0x10F0, 0x10F1, 0x10F2, 0x10F3, 0x10F4, 0x10F5, 0x10F6, 0x10F7, 1007 0x10F8, 0x10F9, 0x10FA, 0x10FB, 0x10FC, 0x10FD, 0x10FE, 0x10FF, 1008 1009 // Table 7 (for high byte 0x20) 1010 1011 /* 0 */ 0x2000, 0x2001, 0x2002, 0x2003, 0x2004, 0x2005, 0x2006, 0x2007, 1012 0x2008, 0x2009, 0x200A, 0x200B, 0x0000, 0x0000, 0x0000, 0x0000, 1013 /* 1 */ 0x2010, 0x2011, 0x2012, 0x2013, 0x2014, 0x2015, 0x2016, 0x2017, 1014 0x2018, 0x2019, 0x201A, 0x201B, 0x201C, 0x201D, 0x201E, 0x201F, 1015 /* 2 */ 0x2020, 0x2021, 0x2022, 0x2023, 0x2024, 0x2025, 0x2026, 0x2027, 1016 0x2028, 0x2029, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x202F, 1017 /* 3 */ 0x2030, 0x2031, 0x2032, 0x2033, 0x2034, 0x2035, 0x2036, 0x2037, 1018 0x2038, 0x2039, 0x203A, 0x203B, 0x203C, 0x203D, 0x203E, 0x203F, 1019 /* 4 */ 0x2040, 0x2041, 0x2042, 0x2043, 0x2044, 0x2045, 0x2046, 0x2047, 1020 0x2048, 0x2049, 0x204A, 0x204B, 0x204C, 0x204D, 0x204E, 0x204F, 1021 /* 5 */ 0x2050, 0x2051, 0x2052, 0x2053, 0x2054, 0x2055, 0x2056, 0x2057, 1022 0x2058, 0x2059, 0x205A, 0x205B, 0x205C, 0x205D, 0x205E, 0x205F, 1023 /* 6 */ 0x2060, 0x2061, 0x2062, 0x2063, 0x2064, 0x2065, 0x2066, 0x2067, 1024 0x2068, 0x2069, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 1025 /* 7 */ 0x2070, 0x2071, 0x2072, 0x2073, 0x2074, 0x2075, 0x2076, 0x2077, 1026 0x2078, 0x2079, 0x207A, 0x207B, 0x207C, 0x207D, 0x207E, 0x207F, 1027 /* 8 */ 0x2080, 0x2081, 0x2082, 0x2083, 0x2084, 0x2085, 0x2086, 0x2087, 1028 0x2088, 0x2089, 0x208A, 0x208B, 0x208C, 0x208D, 0x208E, 0x208F, 1029 /* 9 */ 0x2090, 0x2091, 0x2092, 0x2093, 0x2094, 0x2095, 0x2096, 0x2097, 1030 0x2098, 0x2099, 0x209A, 0x209B, 0x209C, 0x209D, 0x209E, 0x209F, 1031 /* A */ 0x20A0, 0x20A1, 0x20A2, 0x20A3, 0x20A4, 0x20A5, 0x20A6, 0x20A7, 1032 0x20A8, 0x20A9, 0x20AA, 0x20AB, 0x20AC, 0x20AD, 0x20AE, 0x20AF, 1033 /* B */ 0x20B0, 0x20B1, 0x20B2, 0x20B3, 0x20B4, 0x20B5, 0x20B6, 0x20B7, 1034 0x20B8, 0x20B9, 0x20BA, 0x20BB, 0x20BC, 0x20BD, 0x20BE, 0x20BF, 1035 /* C */ 0x20C0, 0x20C1, 0x20C2, 0x20C3, 0x20C4, 0x20C5, 0x20C6, 0x20C7, 1036 0x20C8, 0x20C9, 0x20CA, 0x20CB, 0x20CC, 0x20CD, 0x20CE, 0x20CF, 1037 /* D */ 0x20D0, 0x20D1, 0x20D2, 0x20D3, 0x20D4, 0x20D5, 0x20D6, 0x20D7, 1038 0x20D8, 0x20D9, 0x20DA, 0x20DB, 0x20DC, 0x20DD, 0x20DE, 0x20DF, 1039 /* E */ 0x20E0, 0x20E1, 0x20E2, 0x20E3, 0x20E4, 0x20E5, 0x20E6, 0x20E7, 1040 0x20E8, 0x20E9, 0x20EA, 0x20EB, 0x20EC, 0x20ED, 0x20EE, 0x20EF, 1041 /* F */ 0x20F0, 0x20F1, 0x20F2, 0x20F3, 0x20F4, 0x20F5, 0x20F6, 0x20F7, 1042 0x20F8, 0x20F9, 0x20FA, 0x20FB, 0x20FC, 0x20FD, 0x20FE, 0x20FF, 1043 1044 // Table 8 (for high byte 0x21) 1045 1046 /* 0 */ 0x2100, 0x2101, 0x2102, 0x2103, 0x2104, 0x2105, 0x2106, 0x2107, 1047 0x2108, 0x2109, 0x210A, 0x210B, 0x210C, 0x210D, 0x210E, 0x210F, 1048 /* 1 */ 0x2110, 0x2111, 0x2112, 0x2113, 0x2114, 0x2115, 0x2116, 0x2117, 1049 0x2118, 0x2119, 0x211A, 0x211B, 0x211C, 0x211D, 0x211E, 0x211F, 1050 /* 2 */ 0x2120, 0x2121, 0x2122, 0x2123, 0x2124, 0x2125, 0x2126, 0x2127, 1051 0x2128, 0x2129, 0x212A, 0x212B, 0x212C, 0x212D, 0x212E, 0x212F, 1052 /* 3 */ 0x2130, 0x2131, 0x2132, 0x2133, 0x2134, 0x2135, 0x2136, 0x2137, 1053 0x2138, 0x2139, 0x213A, 0x213B, 0x213C, 0x213D, 0x213E, 0x213F, 1054 /* 4 */ 0x2140, 0x2141, 0x2142, 0x2143, 0x2144, 0x2145, 0x2146, 0x2147, 1055 0x2148, 0x2149, 0x214A, 0x214B, 0x214C, 0x214D, 0x214E, 0x214F, 1056 /* 5 */ 0x2150, 0x2151, 0x2152, 0x2153, 0x2154, 0x2155, 0x2156, 0x2157, 1057 0x2158, 0x2159, 0x215A, 0x215B, 0x215C, 0x215D, 0x215E, 0x215F, 1058 /* 6 */ 0x2170, 0x2171, 0x2172, 0x2173, 0x2174, 0x2175, 0x2176, 0x2177, 1059 0x2178, 0x2179, 0x217A, 0x217B, 0x217C, 0x217D, 0x217E, 0x217F, 1060 /* 7 */ 0x2170, 0x2171, 0x2172, 0x2173, 0x2174, 0x2175, 0x2176, 0x2177, 1061 0x2178, 0x2179, 0x217A, 0x217B, 0x217C, 0x217D, 0x217E, 0x217F, 1062 /* 8 */ 0x2180, 0x2181, 0x2182, 0x2183, 0x2184, 0x2185, 0x2186, 0x2187, 1063 0x2188, 0x2189, 0x218A, 0x218B, 0x218C, 0x218D, 0x218E, 0x218F, 1064 /* 9 */ 0x2190, 0x2191, 0x2192, 0x2193, 0x2194, 0x2195, 0x2196, 0x2197, 1065 0x2198, 0x2199, 0x219A, 0x219B, 0x219C, 0x219D, 0x219E, 0x219F, 1066 /* A */ 0x21A0, 0x21A1, 0x21A2, 0x21A3, 0x21A4, 0x21A5, 0x21A6, 0x21A7, 1067 0x21A8, 0x21A9, 0x21AA, 0x21AB, 0x21AC, 0x21AD, 0x21AE, 0x21AF, 1068 /* B */ 0x21B0, 0x21B1, 0x21B2, 0x21B3, 0x21B4, 0x21B5, 0x21B6, 0x21B7, 1069 0x21B8, 0x21B9, 0x21BA, 0x21BB, 0x21BC, 0x21BD, 0x21BE, 0x21BF, 1070 /* C */ 0x21C0, 0x21C1, 0x21C2, 0x21C3, 0x21C4, 0x21C5, 0x21C6, 0x21C7, 1071 0x21C8, 0x21C9, 0x21CA, 0x21CB, 0x21CC, 0x21CD, 0x21CE, 0x21CF, 1072 /* D */ 0x21D0, 0x21D1, 0x21D2, 0x21D3, 0x21D4, 0x21D5, 0x21D6, 0x21D7, 1073 0x21D8, 0x21D9, 0x21DA, 0x21DB, 0x21DC, 0x21DD, 0x21DE, 0x21DF, 1074 /* E */ 0x21E0, 0x21E1, 0x21E2, 0x21E3, 0x21E4, 0x21E5, 0x21E6, 0x21E7, 1075 0x21E8, 0x21E9, 0x21EA, 0x21EB, 0x21EC, 0x21ED, 0x21EE, 0x21EF, 1076 /* F */ 0x21F0, 0x21F1, 0x21F2, 0x21F3, 0x21F4, 0x21F5, 0x21F6, 0x21F7, 1077 0x21F8, 0x21F9, 0x21FA, 0x21FB, 0x21FC, 0x21FD, 0x21FE, 0x21FF, 1078 1079 // Table 9 (for high byte 0xFE) 1080 1081 /* 0 */ 0xFE00, 0xFE01, 0xFE02, 0xFE03, 0xFE04, 0xFE05, 0xFE06, 0xFE07, 1082 0xFE08, 0xFE09, 0xFE0A, 0xFE0B, 0xFE0C, 0xFE0D, 0xFE0E, 0xFE0F, 1083 /* 1 */ 0xFE10, 0xFE11, 0xFE12, 0xFE13, 0xFE14, 0xFE15, 0xFE16, 0xFE17, 1084 0xFE18, 0xFE19, 0xFE1A, 0xFE1B, 0xFE1C, 0xFE1D, 0xFE1E, 0xFE1F, 1085 /* 2 */ 0xFE20, 0xFE21, 0xFE22, 0xFE23, 0xFE24, 0xFE25, 0xFE26, 0xFE27, 1086 0xFE28, 0xFE29, 0xFE2A, 0xFE2B, 0xFE2C, 0xFE2D, 0xFE2E, 0xFE2F, 1087 /* 3 */ 0xFE30, 0xFE31, 0xFE32, 0xFE33, 0xFE34, 0xFE35, 0xFE36, 0xFE37, 1088 0xFE38, 0xFE39, 0xFE3A, 0xFE3B, 0xFE3C, 0xFE3D, 0xFE3E, 0xFE3F, 1089 /* 4 */ 0xFE40, 0xFE41, 0xFE42, 0xFE43, 0xFE44, 0xFE45, 0xFE46, 0xFE47, 1090 0xFE48, 0xFE49, 0xFE4A, 0xFE4B, 0xFE4C, 0xFE4D, 0xFE4E, 0xFE4F, 1091 /* 5 */ 0xFE50, 0xFE51, 0xFE52, 0xFE53, 0xFE54, 0xFE55, 0xFE56, 0xFE57, 1092 0xFE58, 0xFE59, 0xFE5A, 0xFE5B, 0xFE5C, 0xFE5D, 0xFE5E, 0xFE5F, 1093 /* 6 */ 0xFE60, 0xFE61, 0xFE62, 0xFE63, 0xFE64, 0xFE65, 0xFE66, 0xFE67, 1094 0xFE68, 0xFE69, 0xFE6A, 0xFE6B, 0xFE6C, 0xFE6D, 0xFE6E, 0xFE6F, 1095 /* 7 */ 0xFE70, 0xFE71, 0xFE72, 0xFE73, 0xFE74, 0xFE75, 0xFE76, 0xFE77, 1096 0xFE78, 0xFE79, 0xFE7A, 0xFE7B, 0xFE7C, 0xFE7D, 0xFE7E, 0xFE7F, 1097 /* 8 */ 0xFE80, 0xFE81, 0xFE82, 0xFE83, 0xFE84, 0xFE85, 0xFE86, 0xFE87, 1098 0xFE88, 0xFE89, 0xFE8A, 0xFE8B, 0xFE8C, 0xFE8D, 0xFE8E, 0xFE8F, 1099 /* 9 */ 0xFE90, 0xFE91, 0xFE92, 0xFE93, 0xFE94, 0xFE95, 0xFE96, 0xFE97, 1100 0xFE98, 0xFE99, 0xFE9A, 0xFE9B, 0xFE9C, 0xFE9D, 0xFE9E, 0xFE9F, 1101 /* A */ 0xFEA0, 0xFEA1, 0xFEA2, 0xFEA3, 0xFEA4, 0xFEA5, 0xFEA6, 0xFEA7, 1102 0xFEA8, 0xFEA9, 0xFEAA, 0xFEAB, 0xFEAC, 0xFEAD, 0xFEAE, 0xFEAF, 1103 /* B */ 0xFEB0, 0xFEB1, 0xFEB2, 0xFEB3, 0xFEB4, 0xFEB5, 0xFEB6, 0xFEB7, 1104 0xFEB8, 0xFEB9, 0xFEBA, 0xFEBB, 0xFEBC, 0xFEBD, 0xFEBE, 0xFEBF, 1105 /* C */ 0xFEC0, 0xFEC1, 0xFEC2, 0xFEC3, 0xFEC4, 0xFEC5, 0xFEC6, 0xFEC7, 1106 0xFEC8, 0xFEC9, 0xFECA, 0xFECB, 0xFECC, 0xFECD, 0xFECE, 0xFECF, 1107 /* D */ 0xFED0, 0xFED1, 0xFED2, 0xFED3, 0xFED4, 0xFED5, 0xFED6, 0xFED7, 1108 0xFED8, 0xFED9, 0xFEDA, 0xFEDB, 0xFEDC, 0xFEDD, 0xFEDE, 0xFEDF, 1109 /* E */ 0xFEE0, 0xFEE1, 0xFEE2, 0xFEE3, 0xFEE4, 0xFEE5, 0xFEE6, 0xFEE7, 1110 0xFEE8, 0xFEE9, 0xFEEA, 0xFEEB, 0xFEEC, 0xFEED, 0xFEEE, 0xFEEF, 1111 /* F */ 0xFEF0, 0xFEF1, 0xFEF2, 0xFEF3, 0xFEF4, 0xFEF5, 0xFEF6, 0xFEF7, 1112 0xFEF8, 0xFEF9, 0xFEFA, 0xFEFB, 0xFEFC, 0xFEFD, 0xFEFE, 0x0000, 1113 1114 // Table 10 (for high byte 0xFF) 1115 1116 /* 0 */ 0xFF00, 0xFF01, 0xFF02, 0xFF03, 0xFF04, 0xFF05, 0xFF06, 0xFF07, 1117 0xFF08, 0xFF09, 0xFF0A, 0xFF0B, 0xFF0C, 0xFF0D, 0xFF0E, 0xFF0F, 1118 /* 1 */ 0xFF10, 0xFF11, 0xFF12, 0xFF13, 0xFF14, 0xFF15, 0xFF16, 0xFF17, 1119 0xFF18, 0xFF19, 0xFF1A, 0xFF1B, 0xFF1C, 0xFF1D, 0xFF1E, 0xFF1F, 1120 /* 2 */ 0xFF20, 0xFF41, 0xFF42, 0xFF43, 0xFF44, 0xFF45, 0xFF46, 0xFF47, 1121 0xFF48, 0xFF49, 0xFF4A, 0xFF4B, 0xFF4C, 0xFF4D, 0xFF4E, 0xFF4F, 1122 /* 3 */ 0xFF50, 0xFF51, 0xFF52, 0xFF53, 0xFF54, 0xFF55, 0xFF56, 0xFF57, 1123 0xFF58, 0xFF59, 0xFF5A, 0xFF3B, 0xFF3C, 0xFF3D, 0xFF3E, 0xFF3F, 1124 /* 4 */ 0xFF40, 0xFF41, 0xFF42, 0xFF43, 0xFF44, 0xFF45, 0xFF46, 0xFF47, 1125 0xFF48, 0xFF49, 0xFF4A, 0xFF4B, 0xFF4C, 0xFF4D, 0xFF4E, 0xFF4F, 1126 /* 5 */ 0xFF50, 0xFF51, 0xFF52, 0xFF53, 0xFF54, 0xFF55, 0xFF56, 0xFF57, 1127 0xFF58, 0xFF59, 0xFF5A, 0xFF5B, 0xFF5C, 0xFF5D, 0xFF5E, 0xFF5F, 1128 /* 6 */ 0xFF60, 0xFF61, 0xFF62, 0xFF63, 0xFF64, 0xFF65, 0xFF66, 0xFF67, 1129 0xFF68, 0xFF69, 0xFF6A, 0xFF6B, 0xFF6C, 0xFF6D, 0xFF6E, 0xFF6F, 1130 /* 7 */ 0xFF70, 0xFF71, 0xFF72, 0xFF73, 0xFF74, 0xFF75, 0xFF76, 0xFF77, 1131 0xFF78, 0xFF79, 0xFF7A, 0xFF7B, 0xFF7C, 0xFF7D, 0xFF7E, 0xFF7F, 1132 /* 8 */ 0xFF80, 0xFF81, 0xFF82, 0xFF83, 0xFF84, 0xFF85, 0xFF86, 0xFF87, 1133 0xFF88, 0xFF89, 0xFF8A, 0xFF8B, 0xFF8C, 0xFF8D, 0xFF8E, 0xFF8F, 1134 /* 9 */ 0xFF90, 0xFF91, 0xFF92, 0xFF93, 0xFF94, 0xFF95, 0xFF96, 0xFF97, 1135 0xFF98, 0xFF99, 0xFF9A, 0xFF9B, 0xFF9C, 0xFF9D, 0xFF9E, 0xFF9F, 1136 /* A */ 0xFFA0, 0xFFA1, 0xFFA2, 0xFFA3, 0xFFA4, 0xFFA5, 0xFFA6, 0xFFA7, 1137 0xFFA8, 0xFFA9, 0xFFAA, 0xFFAB, 0xFFAC, 0xFFAD, 0xFFAE, 0xFFAF, 1138 /* B */ 0xFFB0, 0xFFB1, 0xFFB2, 0xFFB3, 0xFFB4, 0xFFB5, 0xFFB6, 0xFFB7, 1139 0xFFB8, 0xFFB9, 0xFFBA, 0xFFBB, 0xFFBC, 0xFFBD, 0xFFBE, 0xFFBF, 1140 /* C */ 0xFFC0, 0xFFC1, 0xFFC2, 0xFFC3, 0xFFC4, 0xFFC5, 0xFFC6, 0xFFC7, 1141 0xFFC8, 0xFFC9, 0xFFCA, 0xFFCB, 0xFFCC, 0xFFCD, 0xFFCE, 0xFFCF, 1142 /* D */ 0xFFD0, 0xFFD1, 0xFFD2, 0xFFD3, 0xFFD4, 0xFFD5, 0xFFD6, 0xFFD7, 1143 0xFFD8, 0xFFD9, 0xFFDA, 0xFFDB, 0xFFDC, 0xFFDD, 0xFFDE, 0xFFDF, 1144 /* E */ 0xFFE0, 0xFFE1, 0xFFE2, 0xFFE3, 0xFFE4, 0xFFE5, 0xFFE6, 0xFFE7, 1145 0xFFE8, 0xFFE9, 0xFFEA, 0xFFEB, 0xFFEC, 0xFFED, 0xFFEE, 0xFFEF, 1146 /* F */ 0xFFF0, 0xFFF1, 0xFFF2, 0xFFF3, 0xFFF4, 0xFFF5, 0xFFF6, 0xFFF7, 1147 0xFFF8, 0xFFF9, 0xFFFA, 0xFFFB, 0xFFFC, 0xFFFD, 0xFFFE, 0xFFFF, 1148 }; 1149 1150 // Returns the next non-ignorable codepoint within string starting from the 1151 // position indicated by index, or zero if there are no more. 1152 // The passed-in index is automatically advanced as the characters in the input 1153 // HFS-decomposed UTF-8 strings are read. 1154 inline int HFSReadNextNonIgnorableCodepoint(const char* string, 1155 int length, 1156 int* index) { 1157 int codepoint = 0; 1158 while (*index < length && codepoint == 0) { 1159 // CBU8_NEXT returns a value < 0 in error cases. For purposes of string 1160 // comparison, we just use that value and flag it with DCHECK. 1161 CBU8_NEXT(string, *index, length, codepoint); 1162 DCHECK_GT(codepoint, 0); 1163 if (codepoint > 0) { 1164 // Check if there is a subtable for this upper byte. 1165 int lookup_offset = lower_case_table[codepoint >> 8]; 1166 if (lookup_offset != 0) 1167 codepoint = lower_case_table[lookup_offset + (codepoint & 0x00FF)]; 1168 // Note: codepoint1 may be again 0 at this point if the character was 1169 // an ignorable. 1170 } 1171 } 1172 return codepoint; 1173 } 1174 1175 } // namespace 1176 1177 // Special UTF-8 version of FastUnicodeCompare. Cf: 1178 // http://developer.apple.com/mac/library/technotes/tn/tn1150.html#StringComparisonAlgorithm 1179 // The input strings must be in the special HFS decomposed form. 1180 int FilePath::HFSFastUnicodeCompare(StringPieceType string1, 1181 StringPieceType string2) { 1182 int length1 = string1.length(); 1183 int length2 = string2.length(); 1184 int index1 = 0; 1185 int index2 = 0; 1186 1187 for (;;) { 1188 int codepoint1 = HFSReadNextNonIgnorableCodepoint(string1.data(), 1189 length1, 1190 &index1); 1191 int codepoint2 = HFSReadNextNonIgnorableCodepoint(string2.data(), 1192 length2, 1193 &index2); 1194 if (codepoint1 != codepoint2) 1195 return (codepoint1 < codepoint2) ? -1 : 1; 1196 if (codepoint1 == 0) { 1197 DCHECK_EQ(index1, length1); 1198 DCHECK_EQ(index2, length2); 1199 return 0; 1200 } 1201 } 1202 } 1203 1204 StringType FilePath::GetHFSDecomposedForm(StringPieceType string) { 1205 StringType result; 1206 ScopedCFTypeRef<CFStringRef> cfstring( 1207 CFStringCreateWithBytesNoCopy( 1208 NULL, 1209 reinterpret_cast<const UInt8*>(string.data()), 1210 string.length(), 1211 kCFStringEncodingUTF8, 1212 false, 1213 kCFAllocatorNull)); 1214 if (cfstring) { 1215 // Query the maximum length needed to store the result. In most cases this 1216 // will overestimate the required space. The return value also already 1217 // includes the space needed for a terminating 0. 1218 CFIndex length = CFStringGetMaximumSizeOfFileSystemRepresentation(cfstring); 1219 DCHECK_GT(length, 0); // should be at least 1 for the 0-terminator. 1220 // Reserve enough space for CFStringGetFileSystemRepresentation to write 1221 // into. Also set the length to the maximum so that we can shrink it later. 1222 // (Increasing rather than decreasing it would clobber the string contents!) 1223 result.reserve(length); 1224 result.resize(length - 1); 1225 Boolean success = CFStringGetFileSystemRepresentation(cfstring, 1226 &result[0], 1227 length); 1228 if (success) { 1229 // Reduce result.length() to actual string length. 1230 result.resize(strlen(result.c_str())); 1231 } else { 1232 // An error occurred -> clear result. 1233 result.clear(); 1234 } 1235 } 1236 return result; 1237 } 1238 1239 int FilePath::CompareIgnoreCase(StringPieceType string1, 1240 StringPieceType string2) { 1241 // Quick checks for empty strings - these speed things up a bit and make the 1242 // following code cleaner. 1243 if (string1.empty()) 1244 return string2.empty() ? 0 : -1; 1245 if (string2.empty()) 1246 return 1; 1247 1248 StringType hfs1 = GetHFSDecomposedForm(string1); 1249 StringType hfs2 = GetHFSDecomposedForm(string2); 1250 1251 // GetHFSDecomposedForm() returns an empty string in an error case. 1252 if (hfs1.empty() || hfs2.empty()) { 1253 NOTREACHED(); 1254 ScopedCFTypeRef<CFStringRef> cfstring1( 1255 CFStringCreateWithBytesNoCopy( 1256 NULL, 1257 reinterpret_cast<const UInt8*>(string1.data()), 1258 string1.length(), 1259 kCFStringEncodingUTF8, 1260 false, 1261 kCFAllocatorNull)); 1262 ScopedCFTypeRef<CFStringRef> cfstring2( 1263 CFStringCreateWithBytesNoCopy( 1264 NULL, 1265 reinterpret_cast<const UInt8*>(string2.data()), 1266 string2.length(), 1267 kCFStringEncodingUTF8, 1268 false, 1269 kCFAllocatorNull)); 1270 return CFStringCompare(cfstring1, 1271 cfstring2, 1272 kCFCompareCaseInsensitive); 1273 } 1274 1275 return HFSFastUnicodeCompare(hfs1, hfs2); 1276 } 1277 1278 #elif defined(OS_POSIX) || defined(OS_FUCHSIA) 1279 1280 // Generic Posix system comparisons. 1281 int FilePath::CompareIgnoreCase(StringPieceType string1, 1282 StringPieceType string2) { 1283 // Specifically need null termianted strings for this API call. 1284 int comparison = strcasecmp(string1.as_string().c_str(), 1285 string2.as_string().c_str()); 1286 if (comparison < 0) 1287 return -1; 1288 if (comparison > 0) 1289 return 1; 1290 return 0; 1291 } 1292 1293 #endif // OS versions of CompareIgnoreCase() 1294 1295 1296 void FilePath::StripTrailingSeparatorsInternal() { 1297 // If there is no drive letter, start will be 1, which will prevent stripping 1298 // the leading separator if there is only one separator. If there is a drive 1299 // letter, start will be set appropriately to prevent stripping the first 1300 // separator following the drive letter, if a separator immediately follows 1301 // the drive letter. 1302 StringType::size_type start = FindDriveLetter(path_) + 2; 1303 1304 StringType::size_type last_stripped = StringType::npos; 1305 for (StringType::size_type pos = path_.length(); 1306 pos > start && IsSeparator(path_[pos - 1]); 1307 --pos) { 1308 // If the string only has two separators and they're at the beginning, 1309 // don't strip them, unless the string began with more than two separators. 1310 if (pos != start + 1 || last_stripped == start + 2 || 1311 !IsSeparator(path_[start - 1])) { 1312 path_.resize(pos - 1); 1313 last_stripped = pos; 1314 } 1315 } 1316 } 1317 1318 FilePath FilePath::NormalizePathSeparators() const { 1319 return NormalizePathSeparatorsTo(kSeparators[0]); 1320 } 1321 1322 FilePath FilePath::NormalizePathSeparatorsTo(CharType separator) const { 1323 #if defined(FILE_PATH_USES_WIN_SEPARATORS) 1324 DCHECK_NE(kSeparators + kSeparatorsLength, 1325 std::find(kSeparators, kSeparators + kSeparatorsLength, separator)); 1326 StringType copy = path_; 1327 for (size_t i = 0; i < kSeparatorsLength; ++i) { 1328 std::replace(copy.begin(), copy.end(), kSeparators[i], separator); 1329 } 1330 return FilePath(copy); 1331 #else 1332 return *this; 1333 #endif 1334 } 1335 1336 #if defined(OS_ANDROID) 1337 bool FilePath::IsContentUri() const { 1338 return StartsWith(path_, "content://", base::CompareCase::INSENSITIVE_ASCII); 1339 } 1340 #endif 1341 1342 } // namespace base 1343
