chrome/browser/sync_file_system/drive_backend/drive_backend_util.h

   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 "chrome/browser/sync_file_system/drive_backend/metadata_database.pb.h"
  14 #include "chrome/browser/sync_file_system/sync_status_code.h"
  15 #include "google_apis/drive/drive_api_error_codes.h"
  16 #include "storage/browser/blob/scoped_file.h"
  17
  18 namespace google_apis {
  19 class ChangeResource;
  20 class FileResource;
  21 }
  22
  23 namespace sync_file_system {
  24 namespace drive_backend {
  25
  26 class LevelDBWrapper;
  27
  28 void PutVersionToDB(int64 version, LevelDBWrapper* db);
  29
  30 void PutServiceMetadataToDB(const ServiceMetadata& service_metadata,
  31                             LevelDBWrapper* db);
  32 void PutFileMetadataToDB(const FileMetadata& file, LevelDBWrapper* db);
  33 void PutFileTrackerToDB(const FileTracker& tracker, LevelDBWrapper* db);
  34
  35 void PutFileMetadataDeletionToDB(const std::string& file_id,
  36                                  LevelDBWrapper* db);
  37 void PutFileTrackerDeletionToDB(int64 tracker_id, LevelDBWrapper* db);
  38
  39 bool HasFileAsParent(const FileDetails& details, const std::string& file_id);
  40
  41 bool IsAppRoot(const FileTracker& tracker);
  42
  43 std::string GetTrackerTitle(const FileTracker& tracker);
  44
  45 SyncStatusCode DriveApiErrorCodeToSyncStatusCode(
  46     google_apis::DriveApiErrorCode error);
  47
  48 // Returns true if |str| starts with |prefix|, and removes |prefix| from |str|.
  49 // If |out| is not NULL, the result is stored in it.
  50 bool RemovePrefix(const std::string& str, const std::string& prefix,
  51                   std::string* out);
  52
  53 scoped_ptr<ServiceMetadata> InitializeServiceMetadata(LevelDBWrapper* db);
  54
  55 template <typename Src, typename Dest>
  56 void AppendContents(const Src& src, Dest* dest) {
  57   dest->insert(dest->end(), src.begin(), src.end());
  58 }
  59
  60 template <typename Container>
  61 const typename Container::mapped_type& LookUpMap(
  62     const Container& container,
  63     const typename Container::key_type& key,
  64     const typename Container::mapped_type& default_value) {
  65   typename Container::const_iterator found = container.find(key);
  66   if (found == container.end())
  67     return default_value;
  68   return found->second;
  69 }
  70
  71 template <typename R, typename S, typename T>
  72 R ComposeFunction(const base::Callback<T()>& g,
  73                   const base::Callback<R(S)>& f) {
  74   return f.Run(g.Run());
  75 }
  76
  77 template <typename R, typename S, typename T>
  78 base::Callback<R()> CreateComposedFunction(
  79     const base::Callback<T()>& g,
  80     const base::Callback<R(S)>& f) {
  81   return base::Bind(&ComposeFunction<R, S, T>, g, f);
  82 }
  83
  84 }  // namespace drive_backend
  85 }  // namespace sync_file_system
  86
  87 #endif  // CHROME_BROWSER_SYNC_FILE_SYSTEM_DRIVE_BACKEND_DRIVE_BACKEND_UTIL_H_