[gtksourceview] Sort the languages alphabetically

[Paolo Borelli <pborelli src gnome org>]

commit f57208df3bbfd503f988f95085faaa27f909281f
Author: Paolo Borelli <pborelli gnome org>
Date:   Sat Nov 26 13:31:06 2011 +0100

    Sort the languages alphabetically
    
    Make sure the list of ids is sorted alphabetically so that applications
    do not need to reimplement sorting to show the list in the GUI.

 gtksourceview/gtksourcelanguagemanager.c |   25 ++++++++++++++++++++++++-
 1 files changed, 24 insertions(+), 1 deletions(-)
---
diff --git a/gtksourceview/gtksourcelanguagemanager.c b/gtksourceview/gtksourcelanguagemanager.c
index 74871ce..a3ebd64 100644
--- a/gtksourceview/gtksourcelanguagemanager.c
+++ b/gtksourceview/gtksourcelanguagemanager.c
@@ -323,6 +323,21 @@ _gtk_source_language_manager_get_rng_file (GtkSourceLanguageManager *lm)
 	return lm->priv->rng_file;
 }
 
+static gint
+language_compare (const gchar **id1, const gchar **id2, GHashTable *language_ids)
+{
+	GtkSourceLanguage *lang1, *lang2;
+	const gchar *name1, *name2;
+
+	lang1 = g_hash_table_lookup (language_ids, *id1);
+	lang2 = g_hash_table_lookup (language_ids, *id2);
+
+	name1 = gtk_source_language_get_name (lang1);
+	name2 = gtk_source_language_get_name (lang2);
+
+	return g_utf8_collate (name1, name2);
+}
+
 static void
 ensure_languages (GtkSourceLanguageManager *lm)
 {
@@ -373,15 +388,21 @@ ensure_languages (GtkSourceLanguageManager *lm)
 
 	if (ids_array != NULL)
 	{
+		/* Sort the array alphabetically so that it
+		 * is ready to use in a list of a GUI */
+		g_ptr_array_sort_with_data (ids_array,
+		                            (GCompareDataFunc)language_compare,
+		                            lm->priv->language_ids);
+
 		/* Ensure the array is NULL terminated */
 		g_ptr_array_add (ids_array, NULL);
+
 		lm->priv->ids = (gchar **)g_ptr_array_free (ids_array, FALSE);
 	}
 
 	g_slist_free_full (filenames, g_free);
 }
 
-
 /**
  * gtk_source_language_manager_get_language_ids:
  * @lm: a #GtkSourceLanguageManager.
@@ -391,6 +412,8 @@ ensure_languages (GtkSourceLanguageManager *lm)
  * Returns: (transfer none): a %NULL-terminated array of string
  * containing the ids of the available languages or %NULL if
  * no language is available.
+ * The array is sorted alphabetically according to the language
+ * name.
  * The array is owned by @lm and must not be modified.
  */
 const gchar * const *