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
3 // found in the LICENSE file.
4
5 #include "base/files/file_util_proxy.h"
6
7 #include "base/bind.h"
8 #include "base/bind_helpers.h"
9 #include "base/files/file_util.h"
10 #include "base/location.h"
11 #include "base/task_runner.h"
12 #include "base/task_runner_util.h"
13
14 namespace base {
15
16 namespace {
17
CallWithTranslatedParameter(const FileUtilProxy::StatusCallback & callback,bool value)18 void CallWithTranslatedParameter(const FileUtilProxy::StatusCallback& callback,
19 bool value) {
20 DCHECK(!callback.is_null());
21 callback.Run(value ? File::FILE_OK : File::FILE_ERROR_FAILED);
22 }
23
24 class GetFileInfoHelper {
25 public:
GetFileInfoHelper()26 GetFileInfoHelper()
27 : error_(File::FILE_OK) {}
28
RunWorkForFilePath(const FilePath & file_path)29 void RunWorkForFilePath(const FilePath& file_path) {
30 if (!PathExists(file_path)) {
31 error_ = File::FILE_ERROR_NOT_FOUND;
32 return;
33 }
34 if (!GetFileInfo(file_path, &file_info_))
35 error_ = File::FILE_ERROR_FAILED;
36 }
37
Reply(const FileUtilProxy::GetFileInfoCallback & callback)38 void Reply(const FileUtilProxy::GetFileInfoCallback& callback) {
39 if (!callback.is_null()) {
40 callback.Run(error_, file_info_);
41 }
42 }
43
44 private:
45 File::Error error_;
46 File::Info file_info_;
47 DISALLOW_COPY_AND_ASSIGN(GetFileInfoHelper);
48 };
49
DeleteAdapter(const FilePath & file_path,bool recursive)50 File::Error DeleteAdapter(const FilePath& file_path, bool recursive) {
51 if (!PathExists(file_path)) {
52 return File::FILE_ERROR_NOT_FOUND;
53 }
54 if (!base::DeleteFile(file_path, recursive)) {
55 if (!recursive && !base::IsDirectoryEmpty(file_path)) {
56 return File::FILE_ERROR_NOT_EMPTY;
57 }
58 return File::FILE_ERROR_FAILED;
59 }
60 return File::FILE_OK;
61 }
62
63 } // namespace
64
65 // Retrieves the information about a file. It is invalid to pass NULL for the
66 // callback.
GetFileInfo(TaskRunner * task_runner,const FilePath & file_path,const GetFileInfoCallback & callback)67 bool FileUtilProxy::GetFileInfo(
68 TaskRunner* task_runner,
69 const FilePath& file_path,
70 const GetFileInfoCallback& callback) {
71 GetFileInfoHelper* helper = new GetFileInfoHelper;
72 return task_runner->PostTaskAndReply(
73 FROM_HERE,
74 Bind(&GetFileInfoHelper::RunWorkForFilePath,
75 Unretained(helper), file_path),
76 Bind(&GetFileInfoHelper::Reply, Owned(helper), callback));
77 }
78
79 // static
DeleteFile(TaskRunner * task_runner,const FilePath & file_path,bool recursive,const StatusCallback & callback)80 bool FileUtilProxy::DeleteFile(TaskRunner* task_runner,
81 const FilePath& file_path,
82 bool recursive,
83 const StatusCallback& callback) {
84 return base::PostTaskAndReplyWithResult(
85 task_runner, FROM_HERE,
86 Bind(&DeleteAdapter, file_path, recursive),
87 callback);
88 }
89
90 // static
Touch(TaskRunner * task_runner,const FilePath & file_path,const Time & last_access_time,const Time & last_modified_time,const StatusCallback & callback)91 bool FileUtilProxy::Touch(
92 TaskRunner* task_runner,
93 const FilePath& file_path,
94 const Time& last_access_time,
95 const Time& last_modified_time,
96 const StatusCallback& callback) {
97 return base::PostTaskAndReplyWithResult(
98 task_runner,
99 FROM_HERE,
100 Bind(&TouchFile, file_path, last_access_time, last_modified_time),
101 Bind(&CallWithTranslatedParameter, callback));
102 }
103
104 } // namespace base
105