[gnome-desktop/wip/locale-info: 3/10] gnome-xkb-info: Handle duplicated layouts

[Rui Matos <rtcm src gnome org>]

commit b9714c7fe89ccbb5474f48bfb806c4d7465d3fe2
Author: Rui Matos <tiagomatos gmail com>
Date:   Mon Jan 21 17:31:34 2013 +0100

    gnome-xkb-info: Handle duplicated layouts
    
    When merging entries from another .xml file (i.e. when
    show-all-sources is active) there might be layout entries which were
    already added before. In that case we don't want to create new entries
    and replace the old ones because layout variants which were already
    added depend on the existence of the old main layout.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=692219

 libgnome-desktop/gnome-xkb-info.c |   21 ++++++++++++++++++++-
 1 files changed, 20 insertions(+), 1 deletions(-)
---
diff --git a/libgnome-desktop/gnome-xkb-info.c b/libgnome-desktop/gnome-xkb-info.c
index 9e6e377..f0dd9bc 100644
--- a/libgnome-desktop/gnome-xkb-info.c
+++ b/libgnome-desktop/gnome-xkb-info.c
@@ -287,6 +287,8 @@ parse_start_element (GMarkupParseContext  *context,
     }
   else if (strcmp (element_name, "variant") == 0)
     {
+      Layout *layout;
+
       if (priv->current_parser_variant)
         {
           g_set_error (error, G_MARKUP_ERROR, G_MARKUP_ERROR_INVALID_CONTENT,
@@ -301,9 +303,20 @@ parse_start_element (GMarkupParseContext  *context,
           return;
         }
 
+      if (!priv->current_parser_layout->xkb_name)
+        {
+          g_set_error (error, G_MARKUP_ERROR, G_MARKUP_ERROR_INVALID_CONTENT,
+                       "'variant' elements must be inside named 'layout' elements");
+          return;
+        }
+
+      layout = g_hash_table_lookup (priv->layouts_table, priv->current_parser_layout->xkb_name);
+      if (!layout)
+        layout = priv->current_parser_layout;
+
       priv->current_parser_variant = g_slice_new0 (Layout);
       priv->current_parser_variant->is_variant = TRUE;
-      priv->current_parser_variant->main_layout = priv->current_parser_layout;
+      priv->current_parser_variant->main_layout = layout;
     }
   else if (strcmp (element_name, "group") == 0)
     {
@@ -407,6 +420,12 @@ parse_end_element (GMarkupParseContext  *context,
 
       priv->current_parser_layout->id = g_strdup (priv->current_parser_layout->xkb_name);
 
+      if (g_hash_table_contains (priv->layouts_table, priv->current_parser_layout->id))
+        {
+          g_clear_pointer (&priv->current_parser_layout, free_layout);
+          return;
+        }
+
       g_hash_table_replace (priv->layouts_table,
                             priv->current_parser_layout->id,
                             priv->current_parser_layout);