Find the application in a store by the provide value

3 files changed, 84 insertions, 0 deletions

diff --git a/libappstream-glib/as-self-test.c b/libappstream-glib/as-self-test.c
index cb6020c..909f6db 100644
--- a/libappstream-glib/as-self-test.c
+++ b/libappstream-glib/as-self-test.c
@@ -2902,6 +2902,43 @@ as_test_store_func (void)
 }
 
 static void
+as_test_store_provides_func (void)
+{
+	AsApp *app;
+	gboolean ret;
+	_cleanup_error_free_ GError *error = NULL;
+	_cleanup_object_unref_ AsStore *store = NULL;
+
+	/* create a store and add a single app */
+	store = as_store_new ();
+	ret = as_store_from_xml (store,
+		"<components version=\"0.6\">"
+		"<component type=\"desktop\">"
+		"<id>test.desktop</id>"
+		"<provides>"
+		"<firmware type=\"flashed\">deadbeef</firmware>"
+		"</provides>"
+		"</component>"
+		"</components>", NULL, &error);
+	g_assert_no_error (error);
+	g_assert (ret);
+
+	/* get an appication by the provide value */
+	app = as_store_get_app_by_provide (store,
+					   AS_PROVIDE_KIND_FIRMWARE_FLASHED,
+					   "deadbeef");
+	g_assert_cmpstr (as_app_get_id (app), ==, "test.desktop");
+	app = as_store_get_app_by_provide (store,
+					   AS_PROVIDE_KIND_FIRMWARE_RUNTIME,
+					   "deadbeef");
+	g_assert (app == NULL);
+	app = as_store_get_app_by_provide (store,
+					   AS_PROVIDE_KIND_FIRMWARE_FLASHED,
+					   "beefdead");
+	g_assert (app == NULL);
+}
+
+static void
 as_test_store_versions_func (void)
 {
 	AsApp *app;
@@ -4240,6 +4277,7 @@ main (int argc, char **argv)
 	g_test_add_func ("/AppStream/store{metadata-index}", as_test_store_metadata_index_func);
 	g_test_add_func ("/AppStream/store{validate}", as_test_store_validate_func);
 	g_test_add_func ("/AppStream/store{embedded}", as_test_store_embedded_func);
+	g_test_add_func ("/AppStream/store{provides}", as_test_store_provides_func);
 	g_test_add_func ("/AppStream/store{local-app-install}", as_test_store_local_app_install_func);
 	g_test_add_func ("/AppStream/store{local-appdata}", as_test_store_local_appdata_func);
 	g_test_add_func ("/AppStream/store{speed-appstream}", as_test_store_speed_appstream_func);
diff --git a/libappstream-glib/as-store.c b/libappstream-glib/as-store.c
index d9949bc..b2d7f91 100644
--- a/libappstream-glib/as-store.c
+++ b/libappstream-glib/as-store.c
@@ -429,6 +429,49 @@ as_store_get_app_by_id (AsStore *store, const gchar *id)
 }
 
 /**
+ * as_store_get_app_by_provide:
+ * @store: a #AsStore instance.
+ * @kind: the #AsProvideKind
+ * @value: the provide value, e.g. "com.hughski.ColorHug2.firmware"
+ *
+ * Finds an application in the store by something that it provides.
+ *
+ * Returns: (transfer none): a #AsApp or %NULL
+ *
+ * Since: 0.5.0
+ **/
+AsApp *
+as_store_get_app_by_provide (AsStore *store, AsProvideKind kind, const gchar *value)
+{
+	AsApp *app;
+	AsProvide *tmp;
+	AsStorePrivate *priv = GET_PRIVATE (store);
+	guint i;
+	guint j;
+	GPtrArray *provides;
+
+	g_return_val_if_fail (AS_IS_STORE (store), NULL);
+	g_return_val_if_fail (kind != AS_PROVIDE_KIND_UNKNOWN, NULL);
+	g_return_val_if_fail (value != NULL, NULL);
+
+	/* find an application that provides something */
+	for (i = 0; i < priv->array->len; i++) {
+		app = g_ptr_array_index (priv->array, i);
+		provides = as_app_get_provides (app);
+		for (j = 0; j < provides->len; j++) {
+			tmp = g_ptr_array_index (provides, j);
+			if (kind != as_provide_get_kind (tmp))
+				continue;
+			if (g_strcmp0 (as_provide_get_value (tmp), value) != 0)
+				continue;
+			return app;
+		}
+	}
+	return NULL;
+
+}
+
+/**
  * as_store_get_app_by_id_with_fallbacks:
  * @store: a #AsStore instance.
  * @id: the application full ID.
diff --git a/libappstream-glib/as-store.h b/libappstream-glib/as-store.h
index ab46d94..3ca2ffc 100644
--- a/libappstream-glib/as-store.h
+++ b/libappstream-glib/as-store.h
@@ -169,6 +169,9 @@ AsApp		*as_store_get_app_by_pkgname	(AsStore	*store,
 						 const gchar	*pkgname);
 AsApp		*as_store_get_app_by_pkgnames	(AsStore	*store,
 						 gchar		**pkgnames);
+AsApp		*as_store_get_app_by_provide	(AsStore	*store,
+						 AsProvideKind	 kind,
+						 const gchar	*value);
 void		 as_store_add_app		(AsStore	*store,
 						 AsApp		*app);
 void		 as_store_remove_app		(AsStore	*store,