1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
|
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
// Copyright (c) 2006-2009 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/file_util.h"
#if defined(OS_WIN)
#include <io.h>
#endif
#include <stdio.h>
#if defined(ANDROID) || defined(OS_POSIX)
#include <unistd.h>
#endif
#include <fstream>
#include "base/file_path.h"
#include "base/logging.h"
#include "base/string_util.h"
#include "base/string_piece.h"
#include "base/sys_string_conversions.h"
namespace {
const FilePath::CharType kExtensionSeparator = FILE_PATH_LITERAL('.');
} // namespace
namespace file_util {
bool EndsWithSeparator(const FilePath& path) {
FilePath::StringType value = path.value();
if (value.empty())
return false;
return FilePath::IsSeparator(value[value.size() - 1]);
}
void TrimTrailingSeparator(std::wstring* dir) {
while (dir->length() > 1 && EndsWithSeparator(dir))
dir->resize(dir->length() - 1);
}
FilePath::StringType GetFileExtensionFromPath(const FilePath& path) {
FilePath::StringType file_name = path.BaseName().value();
const FilePath::StringType::size_type last_dot =
file_name.rfind(kExtensionSeparator);
return FilePath::StringType(last_dot == FilePath::StringType::npos ?
FILE_PATH_LITERAL("") :
file_name, last_dot+1);
}
void InsertBeforeExtension(FilePath* path, const FilePath::StringType& suffix) {
FilePath::StringType& value =
const_cast<FilePath::StringType&>(path->value());
const FilePath::StringType::size_type last_dot =
value.rfind(kExtensionSeparator);
const FilePath::StringType::size_type last_separator =
value.find_last_of(FilePath::StringType(FilePath::kSeparators));
if (last_dot == FilePath::StringType::npos ||
(last_separator != std::wstring::npos && last_dot < last_separator)) {
// The path looks something like "C:\pics.old\jojo" or "C:\pics\jojo".
// We should just append the suffix to the entire path.
value.append(suffix);
return;
}
value.insert(last_dot, suffix);
}
void ReplaceExtension(FilePath* path, const FilePath::StringType& extension) {
FilePath::StringType clean_extension;
// If the new extension is "" or ".", then we will just remove the current
// extension.
if (!extension.empty() &&
extension != FilePath::StringType(&kExtensionSeparator, 1)) {
if (extension[0] != kExtensionSeparator)
clean_extension.append(&kExtensionSeparator, 1);
clean_extension.append(extension);
}
FilePath::StringType& value =
const_cast<FilePath::StringType&>(path->value());
const FilePath::StringType::size_type last_dot =
value.rfind(kExtensionSeparator);
const FilePath::StringType::size_type last_separator =
value.find_last_of(FilePath::StringType(FilePath::kSeparators));
// Erase the current extension, if any.
if ((last_dot > last_separator ||
last_separator == FilePath::StringType::npos) &&
last_dot != FilePath::StringType::npos)
value.erase(last_dot);
value.append(clean_extension);
}
FILE* CreateAndOpenTemporaryFile(FilePath* path) {
FilePath directory;
if (!GetTempDir(&directory))
return NULL;
return CreateAndOpenTemporaryFileInDir(directory, path);
}
bool GetFileSize(const FilePath& file_path, int64_t* file_size) {
FileInfo info;
if (!GetFileInfo(file_path, &info))
return false;
*file_size = info.size;
return true;
}
bool CloseFile(FILE* file) {
if (file == NULL)
return true;
return fclose(file) == 0;
}
// Deprecated functions ----------------------------------------------------
bool AbsolutePath(std::wstring* path_str) {
FilePath path(FilePath::FromWStringHack(*path_str));
if (!AbsolutePath(&path))
return false;
*path_str = path.ToWStringHack();
return true;
}
void AppendToPath(std::wstring* path, const std::wstring& new_ending) {
if (!path) {
NOTREACHED();
return; // Don't crash in this function in release builds.
}
if (!EndsWithSeparator(path))
path->push_back(FilePath::kSeparators[0]);
path->append(new_ending);
}
bool CopyFile(const std::wstring& from_path, const std::wstring& to_path) {
return CopyFile(FilePath::FromWStringHack(from_path),
FilePath::FromWStringHack(to_path));
}
bool CreateDirectory(const std::wstring& full_path) {
return CreateDirectory(FilePath::FromWStringHack(full_path));
}
bool CreateNewTempDirectory(const std::wstring& prefix,
std::wstring* new_temp_path) {
#if defined(OS_WIN)
FilePath::StringType dir_prefix(prefix);
#elif defined(OS_POSIX)
FilePath::StringType dir_prefix = WideToUTF8(prefix);
#endif
FilePath temp_path;
if (!CreateNewTempDirectory(dir_prefix, &temp_path))
return false;
*new_temp_path = temp_path.ToWStringHack();
return true;
}
bool CreateTemporaryFileName(std::wstring* temp_file) {
FilePath temp_file_path;
if (!CreateTemporaryFileName(&temp_file_path))
return false;
*temp_file = temp_file_path.ToWStringHack();
return true;
}
bool Delete(const std::wstring& path) {
return Delete(FilePath::FromWStringHack(path));
}
bool DirectoryExists(const std::wstring& path) {
return DirectoryExists(FilePath::FromWStringHack(path));
}
bool EndsWithSeparator(std::wstring* path) {
return EndsWithSeparator(FilePath::FromWStringHack(*path));
}
bool EndsWithSeparator(const std::wstring& path) {
return EndsWithSeparator(FilePath::FromWStringHack(path));
}
bool GetCurrentDirectory(std::wstring* path_str) {
FilePath path;
if (!GetCurrentDirectory(&path))
return false;
*path_str = path.ToWStringHack();
return true;
}
std::wstring GetFileExtensionFromPath(const std::wstring& path) {
FilePath::StringType extension =
GetFileExtensionFromPath(FilePath::FromWStringHack(path));
#if defined(OS_WIN)
return extension;
#elif defined(OS_POSIX)
return UTF8ToWide(extension);
#endif
}
bool GetFileInfo(const std::wstring& file_path, FileInfo* results) {
return GetFileInfo(FilePath::FromWStringHack(file_path), results);
}
std::wstring GetFilenameFromPath(const std::wstring& path) {
if (path.empty() || EndsWithSeparator(path))
return std::wstring();
return FilePath::FromWStringHack(path).BaseName().ToWStringHack();
}
bool GetFileSize(const std::wstring& file_path, int64_t* file_size) {
return GetFileSize(FilePath::FromWStringHack(file_path), file_size);
}
bool GetTempDir(std::wstring* path_str) {
FilePath path;
if (!GetTempDir(&path))
return false;
*path_str = path.ToWStringHack();
return true;
}
FILE* OpenFile(const std::wstring& filename, const char* mode) {
return OpenFile(FilePath::FromWStringHack(filename), mode);
}
bool PathExists(const std::wstring& path) {
return PathExists(FilePath::FromWStringHack(path));
}
bool PathIsWritable(const std::wstring& path) {
return PathIsWritable(FilePath::FromWStringHack(path));
}
int ReadFile(const std::wstring& filename, char* data, int size) {
return ReadFile(FilePath::FromWStringHack(filename), data, size);
}
bool SetCurrentDirectory(const std::wstring& directory) {
return SetCurrentDirectory(FilePath::FromWStringHack(directory));
}
void UpOneDirectory(std::wstring* dir) {
FilePath path = FilePath::FromWStringHack(*dir);
FilePath directory = path.DirName();
// If there is no separator, we will get back kCurrentDirectory.
// In this case don't change |dir|.
if (directory.value() != FilePath::kCurrentDirectory)
*dir = directory.ToWStringHack();
}
int WriteFile(const std::wstring& filename, const char* data, int size) {
return WriteFile(FilePath::FromWStringHack(filename), data, size);
}
} // namespace
|
