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1 // Copyright 2008 The Chromium Authors. All rights reserved. | 1 // Copyright 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 #include "base/files/file_path.h" | 5 #include "base/files/file_path.h" |
6 | 6 |
7 #include <ctype.h> | 7 #include <ctype.h> |
8 | 8 |
9 #include "base/basictypes.h" | 9 #include "base/basictypes.h" |
10 #include "base/logging.h" | 10 #include "base/logging.h" |
11 | 11 |
12 namespace base { | 12 namespace base { |
13 | 13 |
14 #if defined(FILE_PATH_USES_WIN_SEPARATORS) | 14 #if defined(FILE_PATH_USES_WIN_SEPARATORS) |
15 const FilePath::CharType FilePath::kSeparators[] = FILE_PATH_LITERAL("\\/"); | 15 const FilePath::CharType FilePath::kSeparators[] = FILE_PATH_LITERAL("\\/"); |
16 #else // FILE_PATH_USES_WIN_SEPARATORS | 16 #else // FILE_PATH_USES_WIN_SEPARATORS |
17 const FilePath::CharType FilePath::kSeparators[] = FILE_PATH_LITERAL("/"); | 17 const FilePath::CharType FilePath::kSeparators[] = FILE_PATH_LITERAL("/"); |
18 #endif // FILE_PATH_USES_WIN_SEPARATORS | 18 #endif // FILE_PATH_USES_WIN_SEPARATORS |
19 | 19 |
20 const FilePath::CharType FilePath::kCurrentDirectory[] = FILE_PATH_LITERAL("."); | 20 const FilePath::CharType FilePath::kCurrentDirectory[] = FILE_PATH_LITERAL("."); |
21 const FilePath::CharType FilePath::kParentDirectory[] = FILE_PATH_LITERAL(".."); | |
22 const FilePath::CharType FilePath::kExtensionSeparator = FILE_PATH_LITERAL('.'); | |
21 | 23 |
22 typedef FilePath::StringType StringType; | 24 typedef FilePath::StringType StringType; |
23 | 25 |
24 namespace { | 26 namespace { |
25 | 27 |
26 const FilePath::CharType kStringTerminator = FILE_PATH_LITERAL('\0'); | 28 const FilePath::CharType kStringTerminator = FILE_PATH_LITERAL('\0'); |
27 | 29 |
28 // If this FilePath contains a drive letter specification, returns the | 30 // If this FilePath contains a drive letter specification, returns the |
29 // position of the last character of the drive letter specification, | 31 // position of the last character of the drive letter specification, |
30 // otherwise returns npos. This can only be true on Windows, when a pathname | 32 // otherwise returns npos. This can only be true on Windows, when a pathname |
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71 } | 73 } |
72 // Look for a pair of leading separators. | 74 // Look for a pair of leading separators. |
73 return path.length() > 1 && | 75 return path.length() > 1 && |
74 FilePath::IsSeparator(path[0]) && FilePath::IsSeparator(path[1]); | 76 FilePath::IsSeparator(path[0]) && FilePath::IsSeparator(path[1]); |
75 #else // FILE_PATH_USES_DRIVE_LETTERS | 77 #else // FILE_PATH_USES_DRIVE_LETTERS |
76 // Look for a separator in the first position. | 78 // Look for a separator in the first position. |
77 return path.length() > 0 && FilePath::IsSeparator(path[0]); | 79 return path.length() > 0 && FilePath::IsSeparator(path[0]); |
78 #endif // FILE_PATH_USES_DRIVE_LETTERS | 80 #endif // FILE_PATH_USES_DRIVE_LETTERS |
79 } | 81 } |
80 | 82 |
83 // Find the position of the '.' that separates the extension from the rest | |
84 // of the file name. The position is relative to BaseName(), not value(). | |
Mark Mentovai
2015/01/20 17:11:53
The second sentence should be harsher: this functi
scottmg
2015/01/20 18:01:27
After simplifying below, just deleted this functio
| |
85 // Returns npos if it can't find an extension. | |
86 StringType::size_type FinalExtensionSeparatorPosition(const StringType& path) { | |
87 // Special case "." and ".." | |
88 if (path == FilePath::kCurrentDirectory || path == FilePath::kParentDirectory) | |
89 return StringType::npos; | |
90 | |
91 return path.rfind(FilePath::kExtensionSeparator); | |
92 } | |
93 | |
81 } // namespace | 94 } // namespace |
82 | 95 |
83 FilePath::FilePath() { | 96 FilePath::FilePath() { |
84 } | 97 } |
85 | 98 |
86 FilePath::FilePath(const FilePath& that) : path_(that.path_) { | 99 FilePath::FilePath(const FilePath& that) : path_(that.path_) { |
87 } | 100 } |
88 | 101 |
89 FilePath::FilePath(const StringType& path) : path_(path) { | 102 FilePath::FilePath(const StringType& path) : path_(path) { |
90 StringType::size_type nul_pos = path_.find(kStringTerminator); | 103 StringType::size_type nul_pos = path_.find(kStringTerminator); |
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183 new_path.path_.find_last_of(kSeparators, StringType::npos, | 196 new_path.path_.find_last_of(kSeparators, StringType::npos, |
184 arraysize(kSeparators) - 1); | 197 arraysize(kSeparators) - 1); |
185 if (last_separator != StringType::npos && | 198 if (last_separator != StringType::npos && |
186 last_separator < new_path.path_.length() - 1) { | 199 last_separator < new_path.path_.length() - 1) { |
187 new_path.path_.erase(0, last_separator + 1); | 200 new_path.path_.erase(0, last_separator + 1); |
188 } | 201 } |
189 | 202 |
190 return new_path; | 203 return new_path; |
191 } | 204 } |
192 | 205 |
206 StringType FilePath::FinalExtension() const { | |
207 FilePath base(BaseName()); | |
208 const StringType::size_type dot = FinalExtensionSeparatorPosition(base.path_); | |
209 if (dot == StringType::npos) | |
210 return StringType(); | |
211 | |
212 return base.path_.substr(dot, StringType::npos); | |
213 } | |
214 | |
215 FilePath FilePath::RemoveFinalExtension() const { | |
216 if (FinalExtension().empty()) | |
217 return *this; | |
218 | |
219 const StringType::size_type dot = FinalExtensionSeparatorPosition(path_); | |
Mark Mentovai
2015/01/20 17:11:53
This logic winds up calling FinalExtension() twice
scottmg
2015/01/20 18:01:27
Done.
| |
220 if (dot == StringType::npos) | |
221 return *this; | |
222 | |
223 return FilePath(path_.substr(0, dot)); | |
224 } | |
225 | |
193 FilePath FilePath::Append(const StringType& component) const { | 226 FilePath FilePath::Append(const StringType& component) const { |
194 const StringType* appended = &component; | 227 const StringType* appended = &component; |
195 StringType without_nuls; | 228 StringType without_nuls; |
196 | 229 |
197 StringType::size_type nul_pos = component.find(kStringTerminator); | 230 StringType::size_type nul_pos = component.find(kStringTerminator); |
198 if (nul_pos != StringType::npos) { | 231 if (nul_pos != StringType::npos) { |
199 without_nuls = component.substr(0, nul_pos); | 232 without_nuls = component.substr(0, nul_pos); |
200 appended = &without_nuls; | 233 appended = &without_nuls; |
201 } | 234 } |
202 | 235 |
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262 last_stripped = pos; | 295 last_stripped = pos; |
263 } | 296 } |
264 } | 297 } |
265 } | 298 } |
266 | 299 |
267 } // namespace base | 300 } // namespace base |
268 | 301 |
269 void PrintTo(const base::FilePath& path, std::ostream* out) { | 302 void PrintTo(const base::FilePath& path, std::ostream* out) { |
270 *out << path.value().c_str(); | 303 *out << path.value().c_str(); |
271 } | 304 } |
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