[telepathy-gabble/master] util.c: add lm_message_node_get_attribute_with_namespace

[Guillaume Desmottes]

---
 src/util.c |   44 ++++++++++++++++++++++++++++++++++++++++++++
 src/util.h |    5 ++++-
 2 files changed, 48 insertions(+), 1 deletions(-)

diff --git a/src/util.c b/src/util.c
index 7cf253e..25b35be 100644
--- a/src/util.c
+++ b/src/util.c
@@ -1011,3 +1011,47 @@ gabble_signal_connect_weak (gpointer instance,
   g_object_weak_ref (instance_obj, instance_destroyed_cb, ctx);
   g_object_weak_ref (user_data, user_data_destroyed_cb, ctx);
 }
+
+typedef struct {
+    gchar *key;
+    gchar *value;
+} Attribute;
+
+const gchar *
+lm_message_node_get_attribute_with_namespace (LmMessageNode *node,
+    const gchar *attribute,
+    const gchar *ns)
+{
+  GSList *l;
+  const gchar *result = NULL;
+
+  g_return_val_if_fail (node != NULL, NULL);
+  g_return_val_if_fail (attribute != NULL, NULL);
+  g_return_val_if_fail (ns != NULL, NULL);
+
+  for (l = node->attributes; l != NULL && result == NULL; l = g_slist_next (l))
+    {
+      /* This is NOT part of loudmouth API; it depends LM internals */
+      Attribute *attr = (Attribute *) l->data;
+      gchar **pair;
+
+      pair = g_strsplit (attr->key, ":", 2);
+
+      if (tp_strdiff (pair[1], attribute))
+        /* no prefix (pair[1] == NULL) or the local-name is not the
+         * attribute we are looking for */
+        goto next_attribute;
+
+      if (tp_strdiff (find_namespace_of_prefix (node, pair[0]), ns))
+        /* wrong namespace */
+        goto next_attribute;
+
+      result = attr->value;
+
+next_attribute:
+      g_strfreev (pair);
+      continue;
+    }
+
+  return result;
+}
diff --git a/src/util.h b/src/util.h
index 7760b7e..7e7138a 100644
--- a/src/util.h
+++ b/src/util.h
@@ -82,11 +82,14 @@ const gchar * lm_message_node_get_name (LmMessageNode *node);
 LmMessageNode * lm_message_node_get_child_any_ns (LmMessageNode *node,
     const gchar *name);
 
-
 LmMessage *
 lm_iq_message_make_result (LmMessage *iq_message);
 
 void gabble_signal_connect_weak (gpointer instance, const gchar *detailed_signal,
     GCallback c_handler, GObject *user_data);
 
+const gchar * lm_message_node_get_attribute_with_namespace (LmMessageNode *node,
+    const gchar *attribute,
+    const gchar *ns);
+
 #endif /* __GABBLE_UTIL_H__ */
-- 
1.5.6.5