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.
FindDriveLetter(StringPieceType path)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)
EqualDriveLetterCaseInsensitive(StringPieceType a,StringPieceType b)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
IsPathAbsolute(StringPieceType path)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
AreAllSeparators(const StringType & input)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.
FinalExtensionSeparatorPosition(const StringType & path)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.
ExtensionSeparatorPosition(const StringType & path)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 "..".
IsEmptyOrSpecialCase(const StringType & path)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
FilePath(StringPieceType path)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
operator ==(const FilePath & that) const190 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
operator !=(const FilePath & that) const198 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
operator <<(std::ostream & out,const FilePath & file_path)206 std::ostream& operator<<(std::ostream& out, const FilePath& file_path) {
207 return out << file_path.value();
208 }
209
210 // static
IsSeparator(CharType character)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
GetComponents(std::vector<StringType> * components) const221 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
IsParent(const FilePath & child) const256 bool FilePath::IsParent(const FilePath& child) const {
257 return AppendRelativePath(child, nullptr);
258 }
259
AppendRelativePath(const FilePath & child,FilePath * path) const260 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.
DirName() const308 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
BaseName() const344 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
Extension() const367 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
FinalExtension() const376 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
RemoveExtension() const385 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
RemoveFinalExtension() const396 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
InsertBeforeExtension(StringPieceType suffix) const407 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
InsertBeforeExtensionASCII(StringPiece suffix) const421 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
AddExtension(StringPieceType extension) const431 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
ReplaceExtension(StringPieceType extension) const449 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
MatchesExtension(StringPieceType extension) const466 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
Append(StringPieceType component) const477 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
Append(const FilePath & component) const521 FilePath FilePath::Append(const FilePath& component) const {
522 return Append(component.value());
523 }
524
AppendASCII(StringPiece component) const525 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
IsAbsolute() const534 bool FilePath::IsAbsolute() const {
535 return IsPathAbsolute(path_);
536 }
537
EndsWithSeparator() const538 bool FilePath::EndsWithSeparator() const {
539 if (empty())
540 return false;
541 return IsSeparator(path_.back());
542 }
543
AsEndingWithSeparator() const544 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
StripTrailingSeparators() const556 FilePath FilePath::StripTrailingSeparators() const {
557 FilePath new_path(path_);
558 new_path.StripTrailingSeparatorsInternal();
559
560 return new_path;
561 }
562
ReferencesParent() const563 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
LossyDisplayName() const591 string16 FilePath::LossyDisplayName() const {
592 return path_;
593 }
594
MaybeAsASCII() const595 std::string FilePath::MaybeAsASCII() const {
596 if (base::IsStringASCII(path_))
597 return UTF16ToASCII(path_);
598 return std::string();
599 }
600
AsUTF8Unsafe() const601 std::string FilePath::AsUTF8Unsafe() const {
602 return WideToUTF8(value());
603 }
604
AsUTF16Unsafe() const605 string16 FilePath::AsUTF16Unsafe() const {
606 return value();
607 }
608
609 // static
FromUTF8Unsafe(StringPiece utf8)610 FilePath FilePath::FromUTF8Unsafe(StringPiece utf8) {
611 return FilePath(UTF8ToWide(utf8));
612 }
613
614 // static
FromUTF16Unsafe(StringPiece16 utf16)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
LossyDisplayName() const624 string16 FilePath::LossyDisplayName() const {
625 return WideToUTF16(SysNativeMBToWide(path_));
626 }
627
MaybeAsASCII() const628 std::string FilePath::MaybeAsASCII() const {
629 if (base::IsStringASCII(path_))
630 return path_;
631 return std::string();
632 }
633
AsUTF8Unsafe() const634 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
AsUTF16Unsafe() const642 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
FromUTF8Unsafe(StringPiece utf8)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
FromUTF16Unsafe(StringPiece16 utf16)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
WriteToPickle(Pickle * pickle) const670 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
ReadFromPickle(PickleIterator * iter)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
CompareIgnoreCase(StringPieceType string1,StringPieceType string2)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.
HFSReadNextNonIgnorableCodepoint(const char * string,int length,int * index)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.
HFSFastUnicodeCompare(StringPieceType string1,StringPieceType string2)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
GetHFSDecomposedForm(StringPieceType string)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
CompareIgnoreCase(StringPieceType string1,StringPieceType string2)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.
CompareIgnoreCase(StringPieceType string1,StringPieceType string2)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
StripTrailingSeparatorsInternal()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
NormalizePathSeparators() const1318 FilePath FilePath::NormalizePathSeparators() const {
1319 return NormalizePathSeparatorsTo(kSeparators[0]);
1320 }
1321
NormalizePathSeparatorsTo(CharType separator) const1322 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)
IsContentUri() const1337 bool FilePath::IsContentUri() const {
1338 return StartsWith(path_, "content://", base::CompareCase::INSENSITIVE_ASCII);
1339 }
1340 #endif
1341
1342 } // namespace base
1343