[gnome-software] Automatically de-duplicate gs_app_add_related()

[Richard Hughes <rhughes src gnome org>]

commit f63338017a273a91c2492dbbbd7c34ddd689a40e
Author: Richard Hughes <richard hughsie com>
Date:   Mon Feb 17 13:48:33 2014 +0000

    Automatically de-duplicate gs_app_add_related()

 src/gs-app.c |   20 ++++++++++++++++++++
 1 files changed, 20 insertions(+), 0 deletions(-)
---
diff --git a/src/gs-app.c b/src/gs-app.c
index 7d0bf8d..955a601 100644
--- a/src/gs-app.c
+++ b/src/gs-app.c
@@ -92,6 +92,7 @@ struct GsAppPrivate
        GdkPixbuf               *pixbuf;
        GdkPixbuf               *featured_pixbuf;
        GPtrArray               *related; /* of GsApp */
+       GHashTable              *related_hash; /* of "id-source" */
        GPtrArray               *history; /* of GsApp */
        guint64                  install_date;
 };
@@ -1406,7 +1407,21 @@ gs_app_get_related (GsApp *app)
 void
 gs_app_add_related (GsApp *app, GsApp *app2)
 {
+       gchar *key;
+       gpointer found;
+
        g_return_if_fail (GS_IS_APP (app));
+
+       key = g_strdup_printf ("%s-%s",
+                              gs_app_get_id_full (app2),
+                              gs_app_get_source_default (app2));
+       found = g_hash_table_lookup (app->priv->related_hash, key);
+       if (found != NULL) {
+               g_debug ("Already added %s as a related item", key);
+               g_free (key);
+               return;
+       }
+       g_hash_table_insert (app->priv->related_hash, key, GINT_TO_POINTER (1));
        g_ptr_array_add (app->priv->related, g_object_ref (app2));
 }
 
@@ -1785,6 +1800,10 @@ gs_app_init (GsApp *app)
                                                     g_str_equal,
                                                     g_free,
                                                     g_free);
+       app->priv->related_hash = g_hash_table_new_full (g_str_hash,
+                                                        g_str_equal,
+                                                        g_free,
+                                                        NULL);
        app->priv->urls = g_hash_table_new_full (g_str_hash,
                                                 g_str_equal,
                                                 g_free,
@@ -1823,6 +1842,7 @@ gs_app_finalize (GObject *object)
        g_free (priv->update_details);
        g_free (priv->management_plugin);
        g_hash_table_unref (priv->metadata);
+       g_hash_table_unref (priv->related_hash);
        g_ptr_array_unref (priv->related);
        g_ptr_array_unref (priv->history);
        if (priv->pixbuf != NULL)