src/chrome/browser/media_galleries/fileapi/iphoto_data_provider.cc

   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 #include "chrome/browser/media_galleries/fileapi/iphoto_data_provider.h"
   6
   7 #include <map>
   8
   9 #include "base/bind.h"
  10 #include "base/callback.h"
  11 #include "base/location.h"
  12 #include "base/logging.h"
  13 #include "base/platform_file.h"
  14 #include "base/stl_util.h"
  15 #include "base/strings/string_number_conversions.h"
  16 #include "base/threading/thread_restrictions.h"
  17 #include "chrome/browser/media_galleries/fileapi/media_file_system_backend.h"
  18 #include "chrome/browser/media_galleries/fileapi/safe_iapps_library_parser.h"
  19
  20 namespace iphoto {
  21
  22 IPhotoDataProvider::IPhotoDataProvider(const base::FilePath& library_path)
  23     : iapps::IAppsDataProvider(library_path),
  24       weak_factory_(this) {}
  25
  26 IPhotoDataProvider::~IPhotoDataProvider() {}
  27
  28 void IPhotoDataProvider::DoParseLibrary(
  29     const base::FilePath& library_path,
  30     const ReadyCallback& ready_callback) {
  31   xml_parser_ = new iapps::SafeIAppsLibraryParser;
  32   xml_parser_->ParseIPhotoLibrary(
  33       library_path,
  34       base::Bind(&IPhotoDataProvider::OnLibraryParsed,
  35                  weak_factory_.GetWeakPtr(),
  36                  ready_callback));
  37 }
  38
  39 void IPhotoDataProvider::OnLibraryParsed(const ReadyCallback& ready_callback,
  40                                          bool result,
  41                                          const parser::Library& library) {
  42   DCHECK(MediaFileSystemBackend::CurrentlyOnMediaTaskRunnerThread());
  43   set_valid(result);
  44   if (valid())
  45     BuildIndices(library);
  46   ready_callback.Run(valid());
  47 }
  48
  49 void IPhotoDataProvider::BuildIndices(const parser::Library& library) {
  50   typedef base::hash_map<uint64, const base::FilePath*> IdIndex;
  51   typedef base::hash_map<uint64, std::string> IdFileNameIndex;
  52
  53   IdIndex photo_id_index;
  54   IdIndex originals_id_index;
  55   for (std::set<parser::Photo>::const_iterator photo_it =
  56            library.all_photos.begin();
  57        photo_it != library.all_photos.end(); photo_it++) {
  58     photo_id_index[photo_it->id] = &(photo_it->location);
  59     if (!photo_it->original_location.empty())
  60       originals_id_index[photo_it->id] = &(photo_it->original_location);
  61   }
  62
  63   // Build up a set of IDs which have in-album duplicates.
  64   // Those are the filenames we want to globally mangle.
  65   std::set<uint64> dupe_ids;
  66   for (parser::Albums::const_iterator album_it = library.albums.begin();
  67        album_it != library.albums.end(); album_it++) {
  68     const parser::Album& album = album_it->second;
  69
  70     std::set<std::string> album_paths;
  71     for (parser::Album::const_iterator id_it = album.begin();
  72          id_it != album.end(); id_it++) {
  73       uint64 id = *id_it;
  74       IdIndex::const_iterator photo_it = photo_id_index.find(id);
  75       if (photo_it == photo_id_index.end())
  76         continue;
  77
  78       std::string filename = photo_it->second->BaseName().value();
  79       if (ContainsKey(album_paths, filename))
  80         dupe_ids.insert(id);
  81       else
  82         album_paths.insert(filename);
  83     }
  84   }
  85
  86   // Now build the directory index.
  87   dir_index_.clear();
  88   originals_index_.clear();
  89   for (parser::Albums::const_iterator album_it = library.albums.begin();
  90        album_it != library.albums.end(); album_it++) {
  91     std::string album_name = album_it->first;
  92     const parser::Album& album = album_it->second;
  93
  94     for (parser::Album::const_iterator id_it = album.begin();
  95          id_it != album.end(); id_it++) {
  96       uint64 id = *id_it;
  97       IdIndex::const_iterator photo_it = photo_id_index.find(id);
  98       if (photo_it == photo_id_index.end())
  99         continue;
 100       base::FilePath path = *(photo_it->second);
 101
 102       std::string filename = path.BaseName().value();
 103       if (ContainsKey(dupe_ids, id)) {
 104         filename = path.BaseName().InsertBeforeExtension(
 105           "(" + base::Uint64ToString(id) + ")").value();
 106       }
 107
 108       dir_index_[album_name][filename] = path;
 109
 110       IdIndex::const_iterator original_it = originals_id_index.find(id);
 111       if (original_it != originals_id_index.end())
 112         originals_index_[album_name][filename] = *(original_it->second);
 113     }
 114   }
 115 }
 116
 117 std::vector<std::string> IPhotoDataProvider::GetAlbumNames() const {
 118   std::vector<std::string> names;
 119
 120   for (DirIndex::const_iterator dir_it = dir_index_.begin();
 121        dir_it != dir_index_.end(); dir_it++) {
 122     names.push_back(dir_it->first);
 123   }
 124
 125   return names;
 126 }
 127
 128 std::map<std::string, base::FilePath> IPhotoDataProvider::GetAlbumContents(
 129     const std::string& album) const {
 130   std::map<std::string, base::FilePath> locations;
 131   DirIndex::const_iterator dir_it = dir_index_.find(album);
 132   if (dir_it == dir_index_.end())
 133     return locations;
 134
 135   for (FileIndex::const_iterator file_it = dir_it->second.begin();
 136        file_it != dir_it->second.end(); file_it++) {
 137     locations.insert(make_pair(file_it->first, file_it->second));
 138   }
 139
 140   return locations;
 141 }
 142
 143 base::FilePath IPhotoDataProvider::GetPhotoLocationInAlbum(
 144     const std::string& album,
 145     const std::string& filename) const {
 146   DirIndex::const_iterator dir_it = dir_index_.find(album);
 147   if (dir_it == dir_index_.end())
 148     return base::FilePath();
 149   FileIndex::const_iterator file_it = dir_it->second.find(filename);
 150   if (file_it == dir_it->second.end())
 151     return base::FilePath();
 152   return file_it->second;
 153 }
 154
 155 bool IPhotoDataProvider::HasOriginals(const std::string& album) const {
 156   DirIndex::const_iterator originals_it = originals_index_.find(album);
 157   return originals_it != originals_index_.end();
 158 }
 159
 160 std::map<std::string, base::FilePath> IPhotoDataProvider::GetOriginals(
 161     const std::string& album) const {
 162   std::map<std::string, base::FilePath> locations;
 163   DirIndex::const_iterator originals_it = originals_index_.find(album);
 164   if (originals_it == originals_index_.end())
 165     return locations;
 166
 167   for (FileIndex::const_iterator file_it = originals_it->second.begin();
 168        file_it != originals_it->second.end(); file_it++) {
 169     locations.insert(make_pair(file_it->first, file_it->second));
 170   }
 171
 172   return locations;
 173 }
 174
 175 base::FilePath IPhotoDataProvider::GetOriginalPhotoLocation(
 176       const std::string& album,
 177       const std::string& filename) const {
 178   DirIndex::const_iterator originals_it = originals_index_.find(album);
 179   if (originals_it == originals_index_.end())
 180     return base::FilePath();
 181   FileIndex::const_iterator file_it = originals_it->second.find(filename);
 182   if (file_it == originals_it->second.end())
 183     return base::FilePath();
 184   return file_it->second;
 185 }
 186
 187 }  // namespace iphoto