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      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/itunes_data_provider.h"
      6 
      7 #include <map>
      8 
      9 #include "base/bind.h"
     10 #include "base/callback.h"
     11 #include "base/format_macros.h"
     12 #include "base/i18n/i18n_constants.h"
     13 #include "base/i18n/icu_string_conversions.h"
     14 #include "base/location.h"
     15 #include "base/logging.h"
     16 #include "base/stl_util.h"
     17 #include "base/strings/string_util.h"
     18 #include "base/strings/stringprintf.h"
     19 #include "base/threading/thread_restrictions.h"
     20 #include "chrome/browser/media_galleries/fileapi/file_path_watcher_util.h"
     21 #include "chrome/browser/media_galleries/fileapi/media_file_system_backend.h"
     22 #include "chrome/browser/media_galleries/imported_media_gallery_registry.h"
     23 #include "chrome/common/media_galleries/itunes_library.h"
     24 #include "storage/browser/fileapi/native_file_util.h"
     25 #include "third_party/icu/source/common/unicode/locid.h"
     26 
     27 namespace itunes {
     28 
     29 namespace {
     30 
     31 // Colon and slash are not allowed in filenames, replace them with underscore.
     32 std::string SanitizeName(const std::string& input) {
     33   std::string result;
     34   base::ConvertToUtf8AndNormalize(input, base::kCodepageUTF8, &result);
     35   base::ReplaceChars(result, ":/", "_", &result);
     36   return result;
     37 }
     38 
     39 ITunesDataProvider::Album MakeUniqueTrackNames(const parser::Album& album) {
     40   // TODO(vandebo): It would be nice to ensure that names returned from here
     41   // are stable, but aside from persisting every name returned, it's not
     42   // obvious how to do that (without including the track id in every name).
     43   typedef std::set<const parser::Track*> TrackRefs;
     44   typedef std::map<ITunesDataProvider::TrackName, TrackRefs> AlbumInfo;
     45 
     46   ITunesDataProvider::Album result;
     47   AlbumInfo duped_tracks;
     48 
     49   parser::Album::const_iterator album_it;
     50   for (album_it = album.begin(); album_it != album.end(); ++album_it) {
     51     const parser::Track& track = *album_it;
     52     std::string name = SanitizeName(track.location.BaseName().AsUTF8Unsafe());
     53     duped_tracks[name].insert(&track);
     54   }
     55 
     56   for (AlbumInfo::const_iterator name_it = duped_tracks.begin();
     57        name_it != duped_tracks.end();
     58        ++name_it) {
     59     const TrackRefs& track_refs = name_it->second;
     60     if (track_refs.size() == 1) {
     61       result[name_it->first] = (*track_refs.begin())->location;
     62     } else {
     63       for (TrackRefs::const_iterator track_it = track_refs.begin();
     64            track_it != track_refs.end();
     65            ++track_it) {
     66         base::FilePath track_file_name = (*track_it)->location.BaseName();
     67         std::string id =
     68             base::StringPrintf(" (%" PRId64 ")", (*track_it)->id);
     69         std::string uniquified_track_name =
     70             track_file_name.InsertBeforeExtensionASCII(id).AsUTF8Unsafe();
     71         std::string escaped_track_name = SanitizeName(uniquified_track_name);
     72         result[escaped_track_name] = (*track_it)->location;
     73       }
     74     }
     75   }
     76 
     77   return result;
     78 }
     79 
     80 // |result_path| is set if |locale_string| maps to a localized directory name
     81 // and it exists in the filesystem.
     82 bool CheckLocaleStringAutoAddPath(
     83     const base::FilePath& media_path,
     84     const std::map<std::string, std::string>& localized_dir_names,
     85     const std::string& locale_string,
     86     base::FilePath* result_path) {
     87   DCHECK(!media_path.empty());
     88   DCHECK(!localized_dir_names.empty());
     89   DCHECK(!locale_string.empty());
     90   DCHECK(result_path);
     91 
     92   std::map<std::string, std::string>::const_iterator it =
     93       localized_dir_names.find(locale_string);
     94   if (it == localized_dir_names.end())
     95     return false;
     96 
     97   base::FilePath localized_auto_add_path =
     98       media_path.Append(base::FilePath::FromUTF8Unsafe(it->second));
     99   if (!storage::NativeFileUtil::DirectoryExists(localized_auto_add_path))
    100     return false;
    101 
    102   *result_path = localized_auto_add_path;
    103   return true;
    104 }
    105 
    106 // This method is complex because Apple localizes the directory name in versions
    107 // of iTunes before 10.6.
    108 base::FilePath GetAutoAddPath(const base::FilePath& library_path) {
    109   const char kiTunesMediaDir[] = "iTunes Media";
    110   base::FilePath media_path =
    111       library_path.DirName().AppendASCII(kiTunesMediaDir);
    112 
    113   // Test 'universal' path first.
    114   base::FilePath universal_auto_add_path =
    115       media_path.AppendASCII("Automatically Add to iTunes.localized");
    116   if (storage::NativeFileUtil::DirectoryExists(universal_auto_add_path))
    117     return universal_auto_add_path;
    118 
    119   // Test user locale. Localized directory names encoded in UTF-8.
    120   std::map<std::string, std::string> localized_dir_names;
    121   localized_dir_names["nl"] = "Voeg automatisch toe aan iTunes";
    122   localized_dir_names["en"] = "Automatically Add to iTunes";
    123   localized_dir_names["fr"] = "Ajouter automatiquement \xC3\xA0 iTunes";
    124   localized_dir_names["de"] = "Automatisch zu iTunes hinzuf\xC3\xBCgen";
    125   localized_dir_names["it"] = "Aggiungi automaticamente a iTunes";
    126   localized_dir_names["ja"] = "iTunes \xE3\x81\xAB\xE8\x87\xAA\xE5\x8B\x95\xE7"
    127                               "\x9A\x84\xE3\x81\xAB\xE8\xBF\xBD\xE5\x8A\xA0";
    128   localized_dir_names["es"] = "A\xC3\xB1""adir autom\xC3\xA1ticamente a iTunes";
    129   localized_dir_names["da"] = "F\xC3\xB8j automatisk til iTunes";
    130   localized_dir_names["en-GB"] = "Automatically Add to iTunes";
    131   localized_dir_names["fi"] = "Lis\xC3\xA4\xC3\xA4 automaattisesti iTunesiin";
    132   localized_dir_names["ko"] = "iTunes\xEC\x97\x90 \xEC\x9E\x90\xEB\x8F\x99\xEC"
    133                               "\x9C\xBC\xEB\xA1\x9C \xEC\xB6\x94\xEA\xB0\x80";
    134   localized_dir_names["no"] = "Legg til automatisk i iTunes";
    135   localized_dir_names["pl"] = "Automatycznie dodaj do iTunes";
    136   localized_dir_names["pt"] = "Adicionar Automaticamente ao iTunes";
    137   localized_dir_names["pt-PT"] = "Adicionar ao iTunes automaticamente";
    138   localized_dir_names["ru"] = "\xD0\x90\xD0\xB2\xD1\x82\xD0\xBE\xD0\xBC\xD0\xB0"
    139                               "\xD1\x82\xD0\xB8\xD1\x87\xD0\xB5\xD1\x81\xD0\xBA"
    140                               "\xD0\xB8 \xD0\xB4\xD0\xBE\xD0\xB1\xD0\xB0\xD0"
    141                               "\xB2\xD0\xBB\xD1\x8F\xD1\x82\xD1\x8C \xD0\xB2"
    142                               "iTunes";
    143   localized_dir_names["sv"] = "L\xC3\xA4gg automatiskt till i iTunes";
    144   localized_dir_names["zh-CN"] = "\xE8\x87\xAA\xE5\x8A\xA8\xE6\xB7\xBB\xE5\x8A"
    145                                  "\xA0\xE5\x88\xB0 iTunes";
    146   localized_dir_names["zh-TW"] = "\xE8\x87\xAA\xE5\x8B\x95\xE5\x8A\xA0\xE5\x85"
    147                                  "\xA5 iTunes";
    148 
    149   const icu::Locale locale = icu::Locale::getDefault();
    150   const char* language = locale.getLanguage();
    151   const char* country = locale.getCountry();
    152 
    153   base::FilePath result_path;
    154   if (language != NULL && *language != '\0') {
    155     if (country != NULL && *country != '\0' &&
    156         CheckLocaleStringAutoAddPath(media_path, localized_dir_names,
    157                                      std::string(language) + "-" + country,
    158                                      &result_path)) {
    159       return result_path;
    160     }
    161 
    162     if (CheckLocaleStringAutoAddPath(media_path, localized_dir_names,
    163                                      language, &result_path)) {
    164       return result_path;
    165     }
    166   }
    167 
    168   // Fallback to trying English.
    169   if (CheckLocaleStringAutoAddPath(media_path, localized_dir_names,
    170                                    "en", &result_path)) {
    171     return result_path;
    172   }
    173 
    174   return base::FilePath();
    175 }
    176 
    177 }  // namespace
    178 
    179 ITunesDataProvider::ITunesDataProvider(const base::FilePath& library_path)
    180     : iapps::IAppsDataProvider(library_path),
    181       auto_add_path_(GetAutoAddPath(library_path)),
    182       weak_factory_(this) {}
    183 
    184 ITunesDataProvider::~ITunesDataProvider() {}
    185 
    186 void ITunesDataProvider::DoParseLibrary(
    187     const base::FilePath& library_path,
    188     const ReadyCallback& ready_callback) {
    189   xml_parser_ = new iapps::SafeIAppsLibraryParser;
    190   xml_parser_->ParseITunesLibrary(
    191       library_path,
    192       base::Bind(&ITunesDataProvider::OnLibraryParsed,
    193                  weak_factory_.GetWeakPtr(),
    194                  ready_callback));
    195 }
    196 
    197 const base::FilePath& ITunesDataProvider::auto_add_path() const {
    198   return auto_add_path_;
    199 }
    200 
    201 bool ITunesDataProvider::KnownArtist(const ArtistName& artist) const {
    202   DCHECK(MediaFileSystemBackend::CurrentlyOnMediaTaskRunnerThread());
    203   DCHECK(valid());
    204   return ContainsKey(library_, artist);
    205 }
    206 
    207 bool ITunesDataProvider::KnownAlbum(const ArtistName& artist,
    208                                     const AlbumName& album) const {
    209   DCHECK(MediaFileSystemBackend::CurrentlyOnMediaTaskRunnerThread());
    210   DCHECK(valid());
    211   Library::const_iterator library_it = library_.find(artist);
    212   if (library_it == library_.end())
    213     return false;
    214   return ContainsKey(library_it->second, album);
    215 }
    216 
    217 base::FilePath ITunesDataProvider::GetTrackLocation(
    218     const ArtistName& artist, const AlbumName& album,
    219     const TrackName& track) const {
    220   DCHECK(MediaFileSystemBackend::CurrentlyOnMediaTaskRunnerThread());
    221   DCHECK(valid());
    222   Library::const_iterator library_it = library_.find(artist);
    223   if (library_it == library_.end())
    224     return base::FilePath();
    225 
    226   Artist::const_iterator artist_it = library_it->second.find(album);
    227   if (artist_it == library_it->second.end())
    228     return base::FilePath();
    229 
    230   Album::const_iterator album_it = artist_it->second.find(track);
    231   if (album_it == artist_it->second.end())
    232     return base::FilePath();
    233   return album_it->second;
    234 }
    235 
    236 std::set<ITunesDataProvider::ArtistName>
    237 ITunesDataProvider::GetArtistNames() const {
    238   DCHECK(MediaFileSystemBackend::CurrentlyOnMediaTaskRunnerThread());
    239   DCHECK(valid());
    240   std::set<ArtistName> result;
    241   Library::const_iterator it;
    242   for (it = library_.begin(); it != library_.end(); ++it) {
    243     result.insert(it->first);
    244   }
    245   return result;
    246 }
    247 
    248 std::set<ITunesDataProvider::AlbumName> ITunesDataProvider::GetAlbumNames(
    249     const ArtistName& artist) const {
    250   DCHECK(MediaFileSystemBackend::CurrentlyOnMediaTaskRunnerThread());
    251   DCHECK(valid());
    252   std::set<AlbumName> result;
    253   Library::const_iterator artist_lookup = library_.find(artist);
    254   if (artist_lookup == library_.end())
    255     return result;
    256 
    257   const Artist& artist_entry = artist_lookup->second;
    258   Artist::const_iterator it;
    259   for (it = artist_entry.begin(); it != artist_entry.end(); ++it) {
    260     result.insert(it->first);
    261   }
    262   return result;
    263 }
    264 
    265 ITunesDataProvider::Album ITunesDataProvider::GetAlbum(
    266     const ArtistName& artist, const AlbumName& album) const {
    267   DCHECK(MediaFileSystemBackend::CurrentlyOnMediaTaskRunnerThread());
    268   DCHECK(valid());
    269   Album result;
    270   Library::const_iterator artist_lookup = library_.find(artist);
    271   if (artist_lookup != library_.end()) {
    272     Artist::const_iterator album_lookup = artist_lookup->second.find(album);
    273     if (album_lookup != artist_lookup->second.end())
    274       result = album_lookup->second;
    275   }
    276   return result;
    277 }
    278 
    279 void ITunesDataProvider::OnLibraryParsed(const ReadyCallback& ready_callback,
    280                                          bool result,
    281                                          const parser::Library& library) {
    282   DCHECK(MediaFileSystemBackend::CurrentlyOnMediaTaskRunnerThread());
    283   set_valid(result);
    284   if (valid()) {
    285     library_.clear();
    286     for (parser::Library::const_iterator artist_it = library.begin();
    287          artist_it != library.end();
    288          ++artist_it) {
    289       std::string artist_name = SanitizeName(artist_it->first);
    290       for (parser::Albums::const_iterator album_it = artist_it->second.begin();
    291            album_it != artist_it->second.end();
    292            ++album_it) {
    293         std::string album_name = SanitizeName(album_it->first);
    294         library_[artist_name][album_name] =
    295             MakeUniqueTrackNames(album_it->second);
    296       }
    297     }
    298   }
    299   ready_callback.Run(valid());
    300 }
    301 
    302 }  // namespace itunes
    303