vcs.maemo.org Git - cinaest/blob - src/imdb/imdb-plaintext-downloader.vala

   1 using GLib;
   2
   3 class IMDbDownloadServer : Object, IMDbDownloader {
   4         MainLoop loop;
   5         Cancellable cancellable;
   6         bool running;
   7         uint source_id;
   8         unowned IMDbSqlite sqlite;
   9         string[] mirrors = {
  10                 "ftp.fu-berlin.de/pub/misc/movies/database/",
  11                 "ftp.funet.fi/pub/mirrors/ftp.imdb.com/pub/",
  12                 "ftp.sunet.se/pub/tv+movies/imdb/"
  13         };
  14         string url;
  15         int flags;
  16         int percent_finished;
  17
  18         delegate void ParseLineFunction (string line);
  19
  20         construct {
  21                 loop = new MainLoop (null, false);
  22                 cancellable = new Cancellable ();
  23         }
  24
  25         // IMDbDownloader implementation
  26
  27         public void download (string mirror, int _flags) throws DBus.Error {
  28                 if (running) {
  29                         stdout.printf ("Download in progress. Abort.\n");
  30                         return;
  31                 }
  32                 running = true;
  33                 if (source_id != 0) {
  34                         Source.remove (source_id);
  35                 }
  36
  37                 stdout.printf ("Download started (%x).", flags);
  38                 progress (0);
  39                 url = "ftp://anonymous@" + mirror;
  40                 flags = _flags;
  41                 try {
  42                         Thread.create(download_thread, false);
  43                 } catch (ThreadError e) {
  44                         critical ("Failed to create download thread\n");
  45                         return;
  46                 }
  47         }
  48
  49         public void cancel () throws DBus.Error {
  50                 cancellable.cancel ();
  51         }
  52
  53         public string[] get_mirrors () throws DBus.Error {
  54                 return mirrors;
  55         }
  56
  57         // Private methods
  58
  59         private void* download_thread () {
  60                 description_changed ("Connecting to FTP ...");
  61                 progress (0);
  62                 percent_finished = 0;
  63
  64                 var cache_dir = Path.build_filename (Environment.get_user_cache_dir (), "cinaest");
  65                 DirUtils.create_with_parents (cache_dir, 0770);
  66
  67                 var _sqlite = new IMDbSqlite (Path.build_filename (cache_dir, "imdb.db"));
  68                 sqlite = _sqlite;
  69                 _sqlite.clear ();
  70
  71                 try {
  72                         var movie_parser = new MovieLineParser (sqlite);
  73                         var genre_parser = new GenreLineParser (sqlite);
  74                         var rating_parser = new RatingLineParser (sqlite);
  75                         var aka_parser = new AkaLineParser (sqlite);
  76                         var plot_parser = new PlotLineParser (sqlite);
  77
  78                         var downloader = new FtpDownloader (cancellable);
  79                         downloader.progress.connect (on_progress);
  80
  81                         var parser = new IMDbGzipParser (cancellable);
  82
  83                         if (MOVIES in flags) {
  84                                 description_changed ("Downloading movie list ...");
  85                                 downloader.download (url + "movies.list.gz", Path.build_filename (cache_dir, "movies.list.gz"));
  86                         }
  87                         percent_finished = 20;
  88                         if (GENRES in flags) {
  89                                 description_changed ("Downloading genre data ...");
  90                                 downloader.download (url + "genres.list.gz", Path.build_filename (cache_dir, "genres.list.gz"));
  91                         }
  92                         percent_finished = 40;
  93                         if (RATINGS in flags) {
  94                                 description_changed ("Downloading rating data ...");
  95                                 downloader.download (url + "ratings.list.gz", Path.build_filename (cache_dir, "ratings.list.gz"));
  96                         }
  97                         percent_finished = 60;
  98                         if (AKAS in flags) {
  99                                 description_changed ("Downloading alternative titles ...");
 100                                 downloader.download (url + "aka-titles.list.gz", Path.build_filename (cache_dir, "aka-titles.list.gz"));
 101                         }
 102                         percent_finished = 80;
 103                         if (PLOTS in flags) {
 104                                 description_changed ("Downloading plots ...");
 105                                 downloader.download (url + "plot.list.gz", Path.build_filename (cache_dir, "plot.list.gz"));
 106                         }
 107
 108                         if (MOVIES in flags) {
 109                                 description_changed ("Parsing movie list ...");
 110                                 parser.parse (Path.build_filename (cache_dir, "movies.list.gz"), movie_parser);
 111                         }
 112                         percent_finished = 20;
 113                         if (GENRES in flags) {
 114                                 description_changed ("Parsing genre data ...");
 115                                 parser.parse (Path.build_filename (cache_dir, "genres.list.gz"), genre_parser);
 116                         }
 117                         percent_finished = 40;
 118                         if (RATINGS in flags) {
 119                                 description_changed ("Parsing rating data ...");
 120                                 parser.parse (Path.build_filename (cache_dir, "ratings.list.gz"), rating_parser);
 121                         }
 122                         percent_finished = 60;
 123                         if (AKAS in flags) {
 124                                 description_changed ("Parsing alternative titles ...");
 125                                 parser.parse (Path.build_filename (cache_dir, "aka-titles.list.gz"), aka_parser);
 126                         }
 127                         percent_finished = 80;
 128                         if (PLOTS in flags) {
 129                                 description_changed ("Parsing plots ...");
 130                                 parser.parse (Path.build_filename (cache_dir, "plot.list.gz"), plot_parser);
 131                         }
 132                 } catch (Error e2) {
 133                         if (e2 is IOError.CANCELLED)
 134                                 stdout.printf ("Download cancelled.\n");
 135                         else
 136                                 warning ("Failed to open/read stream: %s\n", e2.message);
 137                 }
 138
 139                 description_changed ("Creating indices ...");
 140                 if (AKAS in flags)
 141                         sqlite.create_aka_index ();
 142                 if (MOVIES in flags)
 143                         sqlite.create_votes_index ();
 144
 145                 if (!cancellable.is_cancelled ()) {
 146                         stdout.printf ("Download complete.\n");
 147                         progress (100);
 148                 }
 149
 150                 sqlite = null;
 151                 running = false;
 152
 153                 timeout_quit ();
 154
 155                 return null;
 156         }
 157
 158         private void on_progress (int dltotal, int dlnow) {
 159                 stdout.printf ("%d / %d\r", dlnow, dltotal);
 160                 if (dltotal > 0)
 161                         progress (99*dlnow/dltotal/100);
 162         }
 163
 164         private void timeout_quit () {
 165                 source_id = Timeout.add (3000, quit);
 166         }
 167
 168         private bool quit () {
 169                 loop.quit ();
 170
 171                 // One-shot only
 172                 return false;
 173         }
 174
 175         public void run () {
 176                 loop.run ();
 177         }
 178
 179         public static void main () {
 180                 Curl.global_init (Curl.GLOBAL_DEFAULT);
 181
 182                 try {
 183                         var conn = DBus.Bus.get (DBus.BusType.SESSION);
 184                         dynamic DBus.Object bus = conn.get_object ("org.freedesktop.DBus",
 185                                                                    "/org/freedesktop/DBus",
 186                                                                    "org.freedesktop.DBus");
 187
 188                         // Try to register service in session bus
 189                         uint request_name_result = bus.request_name (DBUS_SERVICE, (uint) 0);
 190
 191                         if (request_name_result == DBus.RequestNameReply.PRIMARY_OWNER) {
 192                                 // Start server
 193                                 var server = new IMDbDownloadServer ();
 194                                 conn.register_object (DBUS_OBJECT, server);
 195
 196                                 server.run ();
 197                         } else {
 198                                 critical ("Service \"org.maemo.cinaest.IMDb\" already registered. Abort.\n");
 199                         }
 200                 } catch (Error e) {
 201                         critical ("Oops: %s\n", e.message);
 202                 }
 203
 204                 Curl.global_cleanup ();
 205         }
 206 }