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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 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 | 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/file_util.h" | 5 #include "base/file_util.h" |
6 | 6 |
7 #if defined(OS_WIN) | 7 #if defined(OS_WIN) |
8 #include <io.h> | 8 #include <io.h> |
9 #endif | 9 #endif |
10 #include <stdio.h> | 10 #include <stdio.h> |
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229 if (_chsize(fd, current_offset) != 0) | 229 if (_chsize(fd, current_offset) != 0) |
230 return false; | 230 return false; |
231 #else | 231 #else |
232 int fd = fileno(file); | 232 int fd = fileno(file); |
233 if (ftruncate(fd, current_offset) != 0) | 233 if (ftruncate(fd, current_offset) != 0) |
234 return false; | 234 return false; |
235 #endif | 235 #endif |
236 return true; | 236 return true; |
237 } | 237 } |
238 | 238 |
239 } // namespace base | 239 int GetUniquePathNumber(const FilePath& path, |
240 | 240 const FilePath::StringType& suffix) { |
241 // ----------------------------------------------------------------------------- | |
242 | |
243 namespace file_util { | |
244 | |
245 using base::FilePath; | |
246 using base::kMaxUniqueFiles; | |
247 | |
248 int GetUniquePathNumber( | |
249 const FilePath& path, | |
250 const FilePath::StringType& suffix) { | |
251 bool have_suffix = !suffix.empty(); | 241 bool have_suffix = !suffix.empty(); |
252 if (!PathExists(path) && | 242 if (!PathExists(path) && |
253 (!have_suffix || !PathExists(FilePath(path.value() + suffix)))) { | 243 (!have_suffix || !PathExists(FilePath(path.value() + suffix)))) { |
254 return 0; | 244 return 0; |
255 } | 245 } |
256 | 246 |
257 FilePath new_path; | 247 FilePath new_path; |
258 for (int count = 1; count <= kMaxUniqueFiles; ++count) { | 248 for (int count = 1; count <= kMaxUniqueFiles; ++count) { |
259 new_path = | 249 new_path = path.InsertBeforeExtensionASCII(StringPrintf(" (%d)", count)); |
260 path.InsertBeforeExtensionASCII(base::StringPrintf(" (%d)", count)); | |
261 if (!PathExists(new_path) && | 250 if (!PathExists(new_path) && |
262 (!have_suffix || !PathExists(FilePath(new_path.value() + suffix)))) { | 251 (!have_suffix || !PathExists(FilePath(new_path.value() + suffix)))) { |
263 return count; | 252 return count; |
264 } | 253 } |
265 } | 254 } |
266 | 255 |
267 return -1; | 256 return -1; |
268 } | 257 } |
269 | 258 |
270 } // namespace file_util | 259 } // namespace base |
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