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
|
// Copyright (c) 2011 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.
#ifndef WEBKIT_FILEAPI_FILE_SYSTEM_FILE_UTIL_PROXY_H_
#define WEBKIT_FILEAPI_FILE_SYSTEM_FILE_UTIL_PROXY_H_
#include <vector>
#include "base/callback.h"
#include "base/file_path.h"
#include "base/file_util_proxy.h"
#include "base/memory/ref_counted.h"
#include "base/platform_file.h"
#include "base/tracked_objects.h"
namespace base {
class MessageLoopProxy;
class Time;
}
namespace fileapi {
class FileSystemOperationContext;
using base::MessageLoopProxy;
using base::PlatformFile;
using base::PlatformFileError;
using base::PlatformFileInfo;
// This class provides asynchronous access to common file routines for the
// FileSystem API.
class FileSystemFileUtilProxy {
public:
typedef base::FileUtilProxy::StatusCallback StatusCallback;
typedef base::FileUtilProxy::CreateOrOpenCallback CreateOrOpenCallback;
typedef base::FileUtilProxy::EnsureFileExistsCallback
EnsureFileExistsCallback;
typedef Callback3<PlatformFileError /* error code */,
const PlatformFileInfo& /* file_info */,
const FilePath& /* platform_path, where possible */
>::Type GetFileInfoCallback;
typedef Callback2<PlatformFileError /* error code */,
const FilePath& /* local_path, where possible */
>::Type GetLocalPathCallback;
typedef base::FileUtilProxy::ReadDirectoryCallback ReadDirectoryCallback;
// Creates or opens a file with the given flags. It is invalid to pass NULL
// for the callback.
// If PLATFORM_FILE_CREATE is set in |file_flags| it always tries to create
// a new file at the given |file_path| and calls back with
// PLATFORM_FILE_ERROR_FILE_EXISTS if the |file_path| already exists.
static bool CreateOrOpen(const FileSystemOperationContext& context,
scoped_refptr<MessageLoopProxy> message_loop_proxy,
const FilePath& file_path,
int file_flags,
CreateOrOpenCallback* callback);
// Close the given file handle.
static bool Close(const FileSystemOperationContext& context,
scoped_refptr<MessageLoopProxy> message_loop_proxy,
PlatformFile,
StatusCallback* callback);
// Ensures that the given |file_path| exist. This creates a empty new file
// at |file_path| if the |file_path| does not exist.
// If a new file han not existed and is created at the |file_path|,
// |created| of the callback argument is set true and |error code|
// is set PLATFORM_FILE_OK.
// If the file already exists, |created| is set false and |error code|
// is set PLATFORM_FILE_OK.
// If the file hasn't existed but it couldn't be created for some other
// reasons, |created| is set false and |error code| indicates the error.
static bool EnsureFileExists(
const FileSystemOperationContext& context,
scoped_refptr<MessageLoopProxy> message_loop_proxy,
const FilePath& file_path,
EnsureFileExistsCallback* callback);
// Maps virtual file patch to its local physical location.
static bool GetLocalPath(
const FileSystemOperationContext& context,
scoped_refptr<MessageLoopProxy> message_loop_proxy,
const FilePath& virtual_path,
GetLocalPathCallback* callback);
// Retrieves the information about a file. It is invalid to pass NULL for the
// callback.
static bool GetFileInfo(
const FileSystemOperationContext& context,
scoped_refptr<MessageLoopProxy> message_loop_proxy,
const FilePath& file_path,
GetFileInfoCallback* callback);
static bool ReadDirectory(const FileSystemOperationContext& context,
scoped_refptr<MessageLoopProxy> message_loop_proxy,
const FilePath& file_path,
ReadDirectoryCallback* callback);
// Creates directory at given path. It's an error to create
// if |exclusive| is true and dir already exists.
static bool CreateDirectory(
const FileSystemOperationContext& context,
scoped_refptr<MessageLoopProxy> message_loop_proxy,
const FilePath& file_path,
bool exclusive,
bool recursive,
StatusCallback* callback);
// Copies a file or a directory from |src_file_path| to |dest_file_path|
// Error cases:
// If destination file doesn't exist or destination's parent
// doesn't exists.
// If source dir exists but destination path is an existing file.
// If source file exists but destination path is an existing directory.
// If source is a parent of destination.
// If source doesn't exists.
static bool Copy(const FileSystemOperationContext& context,
scoped_refptr<MessageLoopProxy> message_loop_proxy,
const FilePath& src_file_path,
const FilePath& dest_file_path,
StatusCallback* callback);
// Moves a file or a directory from src_file_path to dest_file_path.
// Error cases are similar to Copy method's error cases.
static bool Move(
const FileSystemOperationContext& context,
scoped_refptr<MessageLoopProxy> message_loop_proxy,
const FilePath& src_file_path,
const FilePath& dest_file_path,
StatusCallback* callback);
// Deletes a file or a directory.
// It is an error to delete a non-empty directory with recursive=false.
static bool Delete(const FileSystemOperationContext& context,
scoped_refptr<MessageLoopProxy> message_loop_proxy,
const FilePath& file_path,
bool recursive,
StatusCallback* callback);
// Touches a file. The callback can be NULL.
static bool Touch(
const FileSystemOperationContext& context,
scoped_refptr<MessageLoopProxy> message_loop_proxy,
const FilePath& file_path,
const base::Time& last_access_time,
const base::Time& last_modified_time,
StatusCallback* callback);
// Truncates a file to the given length. If |length| is greater than the
// current length of the file, the file will be extended with zeroes.
// The callback can be NULL.
static bool Truncate(
const FileSystemOperationContext& context,
scoped_refptr<MessageLoopProxy> message_loop_proxy,
const FilePath& path,
int64 length,
StatusCallback* callback);
private:
DISALLOW_IMPLICIT_CONSTRUCTORS(FileSystemFileUtilProxy);
};
} // namespace fileapi
#endif // WEBKIT_FILEAPI_FILE_SYSTEM_FILE_UTIL_PROXY_H_
|
