git.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                         parser.progress.connect (on_progress);
  83
  84                         if (MOVIES in flags) {
  85                                 description_changed ("Downloading movie list ...");
  86                                 downloader.download (url + "movies.list.gz", Path.build_filename (cache_dir, "movies.list.gz"));
  87                         }
  88                         percent_finished = 10;
  89                         if (GENRES in flags) {
  90                                 description_changed ("Downloading genre data ...");
  91                                 downloader.download (url + "genres.list.gz", Path.build_filename (cache_dir, "genres.list.gz"));
  92                         }
  93                         percent_finished = 20;
  94                         if (RATINGS in flags) {
  95                                 description_changed ("Downloading rating data ...");
  96                                 downloader.download (url + "ratings.list.gz", Path.build_filename (cache_dir, "ratings.list.gz"));
  97                         }
  98                         percent_finished = 30;
  99                         if (AKAS in flags) {
 100                                 description_changed ("Downloading alternative titles ...");
 101                                 downloader.download (url + "aka-titles.list.gz", Path.build_filename (cache_dir, "aka-titles.list.gz"));
 102                         }
 103                         percent_finished = 40;
 104                         if (PLOTS in flags) {
 105                                 description_changed ("Downloading plots ...");
 106                                 downloader.download (url + "plot.list.gz", Path.build_filename (cache_dir, "plot.list.gz"));
 107                         }
 108
 109                         percent_finished = 50;
 110                         if (MOVIES in flags) {
 111                                 description_changed ("Parsing movie list ...");
 112                                 parser.parse (Path.build_filename (cache_dir, "movies.list.gz"), movie_parser);
 113                         }
 114                         percent_finished = 60;
 115                         if (GENRES in flags) {
 116                                 description_changed ("Parsing genre data ...");
 117                                 parser.parse (Path.build_filename (cache_dir, "genres.list.gz"), genre_parser);
 118                         }
 119                         percent_finished = 70;
 120                         if (RATINGS in flags) {
 121                                 description_changed ("Parsing rating data ...");
 122                                 parser.parse (Path.build_filename (cache_dir, "ratings.list.gz"), rating_parser);
 123                         }
 124                         percent_finished = 80;
 125                         if (AKAS in flags) {
 126                                 description_changed ("Parsing alternative titles ...");
 127                                 parser.parse (Path.build_filename (cache_dir, "aka-titles.list.gz"), aka_parser);
 128                         }
 129                         percent_finished = 90;
 130                         if (PLOTS in flags) {
 131                                 description_changed ("Parsing plots ...");
 132                                 parser.parse (Path.build_filename (cache_dir, "plot.list.gz"), plot_parser);
 133                         }
 134                 } catch (Error e2) {
 135                         if (e2 is IOError.CANCELLED)
 136                                 stdout.printf ("Download cancelled.\n");
 137                         else
 138                                 warning ("Failed to open/read stream: %s\n", e2.message);
 139                 }
 140
 141                 description_changed ("Creating indices ...");
 142                 if (AKAS in flags)
 143                         sqlite.create_aka_index ();
 144                 if (MOVIES in flags)
 145                         sqlite.create_votes_index ();
 146
 147                 if (!cancellable.is_cancelled ()) {
 148                         stdout.printf ("Download complete.\n");
 149                         progress (100);
 150                 }
 151
 152                 sqlite = null;
 153                 running = false;
 154
 155                 timeout_quit ();
 156
 157                 return null;
 158         }
 159
 160         private void on_progress (int dltotal, int dlnow) {
 161                 stdout.printf ("%d / %d\r", dlnow, dltotal);
 162                 if (dltotal > 0) {
 163                         int p = percent_finished + 10*dlnow/dltotal;
 164                         if (p < 100)
 165                                 progress (p);
 166                 }
 167         }
 168
 169         private void timeout_quit () {
 170                 source_id = Timeout.add (3000, quit);
 171         }
 172
 173         private bool quit () {
 174                 loop.quit ();
 175
 176                 // One-shot only
 177                 return false;
 178         }
 179
 180         public void run () {
 181                 loop.run ();
 182         }
 183
 184         public static void main () {
 185                 Curl.global_init (Curl.GLOBAL_DEFAULT);
 186
 187                 try {
 188                         var conn = DBus.Bus.get (DBus.BusType.SESSION);
 189                         dynamic DBus.Object bus = conn.get_object ("org.freedesktop.DBus",
 190                                                                    "/org/freedesktop/DBus",
 191                                                                    "org.freedesktop.DBus");
 192
 193                         // Try to register service in session bus
 194                         uint request_name_result = bus.request_name (DBUS_SERVICE, (uint) 0);
 195
 196                         if (request_name_result == DBus.RequestNameReply.PRIMARY_OWNER) {
 197                                 // Start server
 198                                 var server = new IMDbDownloadServer ();
 199                                 conn.register_object (DBUS_OBJECT, server);
 200
 201                                 server.run ();
 202                         } else {
 203                                 critical ("Service \"org.maemo.cinaest.IMDb\" already registered. Abort.\n");
 204                         }
 205                 } catch (Error e) {
 206                         critical ("Oops: %s\n", e.message);
 207                 }
 208
 209                 Curl.global_cleanup ();
 210         }
 211 }