[gnome-games/wip/aplazas/781334-refactor-game-sources] libretro: Fixes

[Adrien Plazas <aplazas src gnome org>]

commit 3fd5eaad4f504e9e2bd7674703e80cfecce1c73e
Author: Adrien Plazas <kekun plazas laposte net>
Date:   Sun May 7 08:59:14 2017 +0200

    libretro: Fixes

 plugins/libretro/src/Makefile.am                |    3 +-
 plugins/libretro/src/libretro-game-source.vala  |   60 -----------------------
 plugins/libretro/src/libretro-plugin.vala       |   43 +++++++++++++++-
 plugins/libretro/src/libretro-uri-iterator.vala |   33 ++++++++++++
 plugins/libretro/src/libretro-uri-source.vala   |    7 +++
 5 files changed, 83 insertions(+), 63 deletions(-)
---
diff --git a/plugins/libretro/src/Makefile.am b/plugins/libretro/src/Makefile.am
index 6bbb3f6..4438341 100644
--- a/plugins/libretro/src/Makefile.am
+++ b/plugins/libretro/src/Makefile.am
@@ -7,11 +7,12 @@ libgames_libretro_plugin_la_DEPENDENCIES = \
 
 libgames_libretro_plugin_la_SOURCES = \
        libretro-error.vala \
-       libretro-game-source.vala \
        libretro-icon.vala \
        libretro-plugin.vala \
        libretro-title.vala \
        libretro-uid.vala \
+       libretro-uri-iterator.vala \
+       libretro-uri-source.vala \
        $(NULL)
 
 libgames_libretro_plugin_la_VALAFLAGS = \
diff --git a/plugins/libretro/src/libretro-plugin.vala b/plugins/libretro/src/libretro-plugin.vala
index f6f66bd..eed563a 100644
--- a/plugins/libretro/src/libretro-plugin.vala
+++ b/plugins/libretro/src/libretro-plugin.vala
@@ -1,8 +1,47 @@
 // This file is part of GNOME Games. License: GPL-3.0+.
 
 private class Games.LibretroPlugin : Object, Plugin {
-       public GameSource? get_game_source () throws Error {
-               return new LibretroGameSource ();
+       private const string LIBRETRO_FILE_SCHEME = "libretro+file";
+
+       public UriSource[] get_uri_sources () {
+               try {
+                       var source = new LibretroUriSource ();
+
+                       return { source };
+               }
+               catch (Error e) {
+                       debug (e.message);
+               }
+
+               return {};
+       }
+
+       public UriGameFactory[] get_uri_game_factories () {
+               var game_uri_adapter = new GenericGameUriAdapter (game_for_uri);
+               var factory = new GenericUriGameFactory (game_uri_adapter);
+               factory.add_scheme (LIBRETRO_FILE_SCHEME);
+
+               return { factory };
+       }
+
+       private static Game game_for_uri (Uri uri) throws Error {
+               var file_uri = new Uri.from_uri_and_scheme (uri, "file");
+               var file = file_uri.to_file ();
+               if (!file.query_exists ())
+                       throw new LibretroError.NOT_A_LIBRETRO_DESCRIPTOR ("This isn’t a Libretro core 
descriptor: %s", uri.to_string ());
+
+               var path = file.get_path ();
+               var core_descriptor = new Retro.CoreDescriptor (path);
+               if (!core_descriptor.get_is_game ())
+                       throw new LibretroError.NOT_A_GAME ("This Libretro core descriptor doesn't isn’t a 
game: %s", uri.to_string ());
+
+               var uid = new LibretroUid (core_descriptor);
+               var title = new LibretroTitle (core_descriptor);
+               var icon = new LibretroIcon (core_descriptor);
+               var cover = new DummyCover ();
+               var runner = new RetroRunner.for_core_descriptor (core_descriptor, uid, title);
+
+               return new GenericGame (title, icon, cover, runner);
        }
 }
 
diff --git a/plugins/libretro/src/libretro-uri-iterator.vala b/plugins/libretro/src/libretro-uri-iterator.vala
new file mode 100644
index 0000000..b499677
--- /dev/null
+++ b/plugins/libretro/src/libretro-uri-iterator.vala
@@ -0,0 +1,33 @@
+// This file is part of GNOME Games. License: GPL-3.0+.
+
+public class Games.LibretroUriIterator : Object, UriIterator {
+       private Retro.ModuleIterator iterator;
+       private Uri? uri;
+
+       construct {
+               var modules = new Retro.ModuleQuery (true);
+               iterator = modules.iterator ();
+               uri = null;
+       }
+
+       public new Uri? get () {
+               return uri;
+       }
+
+       public bool next () {
+               while (iterator.next ()) {
+                       var core_descriptor = iterator.get ();
+                       if (!core_descriptor.get_is_game ())
+                               continue;
+
+                       var string_uri = core_descriptor.get_uri ();
+                       uri = new Uri (@"libretro+$string_uri");
+
+                       return true;
+               }
+
+               uri = null;
+
+               return false;
+       }
+}
diff --git a/plugins/libretro/src/libretro-uri-source.vala b/plugins/libretro/src/libretro-uri-source.vala
new file mode 100644
index 0000000..a2f62ba
--- /dev/null
+++ b/plugins/libretro/src/libretro-uri-source.vala
@@ -0,0 +1,7 @@
+// This file is part of GNOME Games. License: GPL-3.0+.
+
+public class Games.LibretroUriSource : Object, UriSource {
+       public UriIterator iterator () {
+               return new LibretroUriIterator ();
+       }
+}