[gnome-software] Copy all the AppStream application metadata items

[Richard Hughes <rhughes src gnome org>]

commit dd905fca3a174814768e6562e67363d0bbbf6bd6
Author: Richard Hughes <richard hughsie com>
Date:   Thu Oct 1 14:26:16 2015 +0100

    Copy all the AppStream application metadata items
    
    This lets us store private metadata and use it in the different plugins,
    for example X-Steam-Size.

 src/plugins/gs-plugin-appstream.c |   22 ++++++++++++++++++++++
 1 files changed, 22 insertions(+), 0 deletions(-)
---
diff --git a/src/plugins/gs-plugin-appstream.c b/src/plugins/gs-plugin-appstream.c
index 4a00f56..c67d7d9 100644
--- a/src/plugins/gs-plugin-appstream.c
+++ b/src/plugins/gs-plugin-appstream.c
@@ -453,6 +453,25 @@ gs_plugin_appstream_are_screenshots_perfect (AsApp *app)
 }
 
 /**
+ * gs_plugin_appstream_copy_metadata:
+ */
+static void
+gs_plugin_appstream_copy_metadata (GsApp *app, AsApp *item)
+{
+       GHashTable *hash;
+       GList *l;
+       g_autoptr(GList) keys = NULL;
+
+       hash = as_app_get_metadata (item);
+       keys = g_hash_table_get_keys (hash);
+       for (l = keys; l != NULL; l = l->next) {
+               const gchar *key = l->data;
+               const gchar *value = g_hash_table_lookup (hash, key);
+               gs_app_set_metadata (app, key, value);
+       }
+}
+
+/**
  * gs_plugin_refine_item:
  */
 static gboolean
@@ -590,6 +609,9 @@ gs_plugin_refine_item (GsPlugin *plugin,
        if (gs_app_get_id_kind (app) == AS_ID_KIND_UNKNOWN)
                gs_app_set_id_kind (app, as_app_get_id_kind (item));
 
+       /* copy all the metadata */
+       gs_plugin_appstream_copy_metadata (app, item);
+
        /* set package names */
        pkgnames = as_app_get_pkgnames (item);
        if (pkgnames->len > 0 && gs_app_get_sources(app)->len == 0)