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1 // Copyright (c) 2008 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2008 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 // FilePath is a container for pathnames stored in a platform's native string | 5 // FilePath is a container for pathnames stored in a platform's native string |
6 // type, providing containers for manipulation in according with the | 6 // type, providing containers for manipulation in according with the |
7 // platform's conventions for pathnames. It supports the following path | 7 // platform's conventions for pathnames. It supports the following path |
8 // types: | 8 // types: |
9 // | 9 // |
10 // POSIX Windows | 10 // POSIX Windows |
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287 // directory (i.e. has a path component that is ".." | 287 // directory (i.e. has a path component that is ".." |
288 bool ReferencesParent() const; | 288 bool ReferencesParent() const; |
289 | 289 |
290 // Older Chromium code assumes that paths are always wstrings. | 290 // Older Chromium code assumes that paths are always wstrings. |
291 // This function converts a wstring to a FilePath, and is useful to smooth | 291 // This function converts a wstring to a FilePath, and is useful to smooth |
292 // porting that old code to the FilePath API. | 292 // porting that old code to the FilePath API. |
293 // It has "Hack" in its name so people feel bad about using it. | 293 // It has "Hack" in its name so people feel bad about using it. |
294 // TODO(port): remove these functions. | 294 // TODO(port): remove these functions. |
295 static FilePath FromWStringHack(const std::wstring& wstring); | 295 static FilePath FromWStringHack(const std::wstring& wstring); |
296 | 296 |
297 // Compare two strings in the same way the file system does. | |
298 // Note that these always ignore case, even on file systems that are case- | |
299 // sensitive. If case-sensitive comparison is ever needed, add corresponding | |
300 // methods here. | |
301 // The methods are written as a static method so that they can also be used | |
302 // on parts of a file path, e.g., just the extension. | |
303 // CompareIgnoreCase() returns -1, 0 or 1 for less-than, equal-to and | |
304 // greater-than respectively. | |
305 static int CompareIgnoreCase(const StringType& string1, | |
306 const StringType& string2); | |
307 static bool CompareEqualIgnoreCase(const StringType& string1, | |
308 const StringType& string2) { | |
309 return CompareIgnoreCase(string1, string2) == 0; | |
310 } | |
311 static bool CompareLessIgnoreCase(const StringType& string1, | |
312 const StringType& string2) { | |
313 return CompareIgnoreCase(string1, string2) < 0; | |
314 } | |
315 | |
316 #if defined(OS_MACOSX) | |
317 // Returns the string in the special canonical decomposed form as defined for | |
318 // HFS, which is close to, but not quite, decomposition form D. See | |
319 // http://developer.apple.com/mac/library/technotes/tn/tn1150.html#UnicodeSubt
leties | |
320 // for further comments. | |
321 // Returns the epmty string if the conversion failed. | |
322 static StringType GetHFSDecomposedForm(const FilePath::StringType& string); | |
323 | |
324 // Special UTF-8 version of FastUnicodeCompare. Cf: | |
325 // http://developer.apple.com/mac/library/technotes/tn/tn1150.html#StringCompa
risonAlgorithm | |
326 // IMPORTANT: The input strings must be in the special HFS decomposed form! | |
327 // (cf. above GetHFSDecomposedForm method) | |
328 static int HFSFastUnicodeCompare(const StringType& string1, | |
329 const StringType& string2); | |
330 #endif | |
331 | |
332 // Older Chromium code assumes that paths are always wstrings. | 297 // Older Chromium code assumes that paths are always wstrings. |
333 // This function produces a wstring from a FilePath, and is useful to smooth | 298 // This function produces a wstring from a FilePath, and is useful to smooth |
334 // porting that old code to the FilePath API. | 299 // porting that old code to the FilePath API. |
335 // It has "Hack" in its name so people feel bad about using it. | 300 // It has "Hack" in its name so people feel bad about using it. |
336 // TODO(port): remove these functions. | 301 // TODO(port): remove these functions. |
337 std::wstring ToWStringHack() const; | 302 std::wstring ToWStringHack() const; |
338 | 303 |
339 private: | 304 private: |
340 // Remove trailing separators from this object. If the path is absolute, it | 305 // Remove trailing separators from this object. If the path is absolute, it |
341 // will never be stripped any more than to refer to the absolute root | 306 // will never be stripped any more than to refer to the absolute root |
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371 namespace stdext { | 336 namespace stdext { |
372 | 337 |
373 inline size_t hash_value(const FilePath& f) { | 338 inline size_t hash_value(const FilePath& f) { |
374 return hash_value(f.value()); | 339 return hash_value(f.value()); |
375 } | 340 } |
376 | 341 |
377 } // namespace stdext | 342 } // namespace stdext |
378 #endif // COMPILER | 343 #endif // COMPILER |
379 | 344 |
380 #endif // BASE_FILE_PATH_H_ | 345 #endif // BASE_FILE_PATH_H_ |
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