[gnome-games] sega-saturn: Replace SegaSaturnGame by GenericGame

[Adrien Plazas <aplazas src gnome org>]

commit 1c8544b14616663d790a15364e4402dc6616053e
Author: Adrien Plazas <kekun plazas laposte net>
Date:   Thu May 12 08:16:49 2016 +0200

    sega-saturn: Replace SegaSaturnGame by GenericGame
    
    This is needed to remove custom game types and to simplify the code
    base.

 plugins/sega-saturn/src/Makefile.am             |    1 -
 plugins/sega-saturn/src/sega-saturn-game.vala   |   84 -----------------------
 plugins/sega-saturn/src/sega-saturn-plugin.vala |   52 ++++++++++++++-
 3 files changed, 51 insertions(+), 86 deletions(-)
---
diff --git a/plugins/sega-saturn/src/Makefile.am b/plugins/sega-saturn/src/Makefile.am
index 94a2dab..a53cb7b 100644
--- a/plugins/sega-saturn/src/Makefile.am
+++ b/plugins/sega-saturn/src/Makefile.am
@@ -6,7 +6,6 @@ libgames_sega_saturn_plugin_la_DEPENDENCIES = \
        $(NULL)
 
 libgames_sega_saturn_plugin_la_SOURCES = \
-       sega-saturn-game.vala \
        sega-saturn-header.vala \
        sega-saturn-plugin.vala \
        sega-saturn-uid.vala \
diff --git a/plugins/sega-saturn/src/sega-saturn-plugin.vala b/plugins/sega-saturn/src/sega-saturn-plugin.vala
index d82a659..e0668ae 100644
--- a/plugins/sega-saturn/src/sega-saturn-plugin.vala
+++ b/plugins/sega-saturn/src/sega-saturn-plugin.vala
@@ -2,6 +2,8 @@
 
 private class Games.SegaSaturnPlugin : Object, Plugin {
        private const string MIME_TYPE = "application/x-saturn-rom";
+       private const string MODULE_BASENAME = "libretro-saturn.so";
+       private const bool SUPPORTS_SNAPSHOTTING = false;
 
        public GameSource get_game_source () throws Error {
                var query = new MimeTypeTrackerQuery (MIME_TYPE, game_for_uri);
@@ -13,7 +15,55 @@ private class Games.SegaSaturnPlugin : Object, Plugin {
        }
 
        private static Game game_for_uri (string uri) throws Error {
-               return new SegaSaturnGame (uri);
+               var file = File.new_for_uri (uri);
+               var header = new SegaSaturnHeader (file);
+               header.check_validity ();
+
+               var cue = get_associated_cue_sheet (file);
+               var real_uri = cue ?? uri;
+
+               var uid = new SegaSaturnUid (header);
+               var title = new FilenameTitle (uri);
+               var icon = new DummyIcon ();
+               var cover = new DummyCover ();
+               var runner =  new RetroRunner (MODULE_BASENAME, uri, uid, SUPPORTS_SNAPSHOTTING);
+
+               return new GenericGame (title, icon, cover, runner);
+       }
+
+       private static string? get_associated_cue_sheet (File file) throws Error {
+               var directory = file.get_parent ();
+               var enumerator = directory.enumerate_children (FileAttribute.STANDARD_NAME, 0);
+
+               FileInfo file_info;
+               while ((file_info = enumerator.next_file ()) != null) {
+                       var name = file_info.get_name ();
+                       var child = directory.resolve_relative_path (name);
+                       var child_info = child.query_info ("*", FileQueryInfoFlags.NONE);
+                       var type = child_info.get_content_type ();
+
+                       if (type == "application/x-cue" && cue_contains_file (child, file))
+                               return child.get_uri ();
+               }
+
+               return null;
+       }
+
+       private static bool cue_contains_file (File cue, File file) throws Error {
+               var file_input_stream = cue.read ();
+               var data_input_stream = new DataInputStream (file_input_stream);
+
+               var regex = /FILE\s+"(.*?)"\s+BINARY/;
+
+               string line;
+               MatchInfo match_info;
+               while ((line = data_input_stream.read_line (null)) != null) {
+                       if (regex.match (line, RegexMatchFlags.ANCHORED, out match_info))
+                               if (match_info.fetch (1) == file.get_basename ())
+                                       return true;
+               }
+
+               return false;
        }
 }