drive_backend_util.h revision 116680a4aac90f2aa7413d9095a592090648e557 
1// Copyright 2013 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#ifndef CHROME_BROWSER_SYNC_FILE_SYSTEM_DRIVE_BACKEND_DRIVE_BACKEND_UTIL_H_
6#define CHROME_BROWSER_SYNC_FILE_SYSTEM_DRIVE_BACKEND_DRIVE_BACKEND_UTIL_H_
7
8#include <string>
9
10#include "base/bind.h"
11#include "base/callback.h"
12#include "base/memory/scoped_ptr.h"
13#include "base/memory/scoped_vector.h"
14#include "chrome/browser/sync_file_system/drive_backend/metadata_database.pb.h"
15#include "chrome/browser/sync_file_system/sync_status_code.h"
16#include "google_apis/drive/gdata_errorcode.h"
17#include "webkit/common/blob/scoped_file.h"
18
19namespace google_apis {
20class ChangeResource;
21class FileResource;
22class ResourceEntry;
23}
24
25namespace leveldb {
26class DB;
27class WriteBatch;
28}
29
30namespace sync_file_system {
31namespace drive_backend {
32
33void PutVersionToBatch(int64 version, leveldb::WriteBatch* batch);
34
35void PutServiceMetadataToBatch(const ServiceMetadata& service_metadata,
36                               leveldb::WriteBatch* batch);
37void PutFileMetadataToBatch(const FileMetadata& file,
38                            leveldb::WriteBatch* batch);
39void PutFileTrackerToBatch(const FileTracker& tracker,
40                           leveldb::WriteBatch* batch);
41
42void PutFileMetadataDeletionToBatch(const std::string& file_id,
43                                    leveldb::WriteBatch* batch);
44void PutFileTrackerDeletionToBatch(int64 tracker_id,
45                                   leveldb::WriteBatch* batch);
46
47bool HasFileAsParent(const FileDetails& details, const std::string& file_id);
48
49bool IsAppRoot(const FileTracker& tracker);
50
51std::string GetTrackerTitle(const FileTracker& tracker);
52
53SyncStatusCode GDataErrorCodeToSyncStatusCode(
54    google_apis::GDataErrorCode error);
55
56// Returns true if |str| starts with |prefix|, and removes |prefix| from |str|.
57// If |out| is not NULL, the result is stored in it.
58bool RemovePrefix(const std::string& str, const std::string& prefix,
59                  std::string* out);
60
61scoped_ptr<ServiceMetadata> InitializeServiceMetadata(leveldb::DB* db);
62
63template <typename Src, typename Dest>
64void AppendContents(const Src& src, Dest* dest) {
65  dest->insert(dest->end(), src.begin(), src.end());
66}
67
68template <typename Container>
69const typename Container::mapped_type& LookUpMap(
70    const Container& container,
71    const typename Container::key_type& key,
72    const typename Container::mapped_type& default_value) {
73  typename Container::const_iterator found = container.find(key);
74  if (found == container.end())
75    return default_value;
76  return found->second;
77}
78
79template <typename R, typename S, typename T>
80R ComposeFunction(const base::Callback<T()>& g,
81                  const base::Callback<R(S)>& f) {
82  return f.Run(g.Run());
83}
84
85template <typename R, typename S, typename T>
86base::Callback<R()> CreateComposedFunction(
87    const base::Callback<T()>& g,
88    const base::Callback<R(S)>& f) {
89  return base::Bind(&ComposeFunction<R, S, T>, g, f);
90}
91
92}  // namespace drive_backend
93}  // namespace sync_file_system
94
95#endif  // CHROME_BROWSER_SYNC_FILE_SYSTEM_DRIVE_BACKEND_DRIVE_BACKEND_UTIL_H_
96