[gnome-games] generic: Add GenericUriGameSource.get_factories_for_uri()

[Adrien Plazas <aplazas src gnome org>]

commit f72dcbcc798f0a248152d079a5e852ce08f182b0
Author: Adrien Plazas <kekun plazas laposte net>
Date:   Fri May 5 11:16:06 2017 +0200

    generic: Add GenericUriGameSource.get_factories_for_uri()
    
    This will be useful to avoid code duplication in future commits.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=781334

 src/generic/generic-uri-game-source.vala |   27 +++++++++++++++++----------
 1 files changed, 17 insertions(+), 10 deletions(-)
---
diff --git a/src/generic/generic-uri-game-source.vala b/src/generic/generic-uri-game-source.vala
index f917176..b68b9de 100644
--- a/src/generic/generic-uri-game-source.vala
+++ b/src/generic/generic-uri-game-source.vala
@@ -24,6 +24,11 @@ public class Games.GenericUriGameSource : Object, GameSource {
                }
        }
 
+       public async void add_uri (string uri) {
+               foreach (var factory in yield get_factories_for_uri (uri))
+                       yield factory.add_uri (uri);
+       }
+
        public async void each_game (GameCallback callback) {
                foreach (var source in sources)
                        foreach (var uri in source)
@@ -33,34 +38,36 @@ public class Games.GenericUriGameSource : Object, GameSource {
                        yield factory.foreach_game (callback);
        }
 
-       private async void add_uri (string uri) {
-               Idle.add (add_uri.callback);
+       private async UriGameFactory[] get_factories_for_uri (string uri) {
+               Idle.add (get_factories_for_uri.callback);
                yield;
 
+               UriGameFactory[] factories = {};
+
                if (uri.has_prefix ("file:")) {
                        try {
-                               yield add_file (uri);
+                               foreach (var factory in yield get_factories_for_file (uri))
+                                       factories += factory;
                        }
                        catch (Error e) {
                                debug (e.message);
                        }
-
-                       return;
                }
                // TODO Add support for URN and other schemes.
+
+               return factories;
        }
 
-       private async void add_file (string uri) throws Error {
+       private async UriGameFactory[] get_factories_for_file (string uri) throws Error {
                var file = File.new_for_uri (uri);
                if (!file.query_exists ())
-                       return;
+                       return {};
 
                var file_info = file.query_info (FileAttribute.STANDARD_CONTENT_TYPE, 
FileQueryInfoFlags.NONE);
                var mime_type = file_info.get_content_type ();
                if (!factories_for_mime_type.contains (mime_type))
-                       return;
+                       return {};
 
-               foreach (var factory in factories_for_mime_type[mime_type].data)
-                       yield factory.add_uri (uri);
+               return factories_for_mime_type[mime_type].data;
        }
 }