[gedit/wip/loader-saver] tab: get candidate encodings when no encoding supplied

[Sébastien Wilmet <swilmet src gnome org>]

commit 6b40872ed8488d664502129d8aeb4291262b5493
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Sat Jun 28 15:34:05 2014 +0200

    tab: get candidate encodings when no encoding supplied

 gedit/gedit-tab.c |   50 +++++++++++++++++++++++++++++++++++++++++++++-----
 1 files changed, 45 insertions(+), 5 deletions(-)
---
diff --git a/gedit/gedit-tab.c b/gedit/gedit-tab.c
index 29a482c..26c8b4b 100644
--- a/gedit/gedit-tab.c
+++ b/gedit/gedit-tab.c
@@ -1867,28 +1867,68 @@ end:
        }
 }
 
+static GSList *
+get_candidate_encodings (GeditTab *tab)
+{
+       GeditDocument *doc;
+       GSettings *enc_settings;
+       gchar **enc_strv;
+       gchar *metadata_charset;
+       GSList *encodings;
+
+       enc_settings = g_settings_new ("org.gnome.gedit.preferences.encodings");
+
+       enc_strv = g_settings_get_strv (enc_settings, GEDIT_SETTINGS_ENCODING_AUTO_DETECTED);
+
+       encodings = _gedit_utils_encoding_strv_to_list ((const gchar * const *)enc_strv);
+
+       doc = gedit_tab_get_document (tab);
+       metadata_charset = gedit_document_get_metadata (doc, GEDIT_METADATA_ATTRIBUTE_ENCODING);
+
+       if (metadata_charset != NULL)
+       {
+               const GtkSourceEncoding *metadata_enc;
+
+               metadata_enc = gtk_source_encoding_get_from_charset (metadata_charset);
+
+               if (metadata_enc != NULL)
+               {
+                       encodings = g_slist_prepend (encodings, (gpointer)metadata_enc);
+               }
+
+               g_free (metadata_charset);
+       }
+
+       g_strfreev (enc_strv);
+       g_object_unref (enc_settings);
+
+       return encodings;
+}
+
 static void
 load (GeditTab                *tab,
       const GtkSourceEncoding *encoding,
       gint                     line_pos,
       gint                     column_pos)
 {
+       GSList *candidate_encodings = NULL;
+
        g_return_if_fail (GTK_SOURCE_IS_FILE_LOADER (tab->priv->loader));
 
        if (encoding != NULL)
        {
                tab->priv->user_requested_encoding = TRUE;
-
-               GSList *list = g_slist_append (NULL, (gpointer) encoding);
-               gtk_source_file_loader_set_candidate_encodings (tab->priv->loader, list);
-               g_slist_free (list);
+               candidate_encodings = g_slist_append (NULL, (gpointer) encoding);
        }
        else
        {
                tab->priv->user_requested_encoding = FALSE;
-               /* TODO */
+               candidate_encodings = get_candidate_encodings (tab);
        }
 
+       gtk_source_file_loader_set_candidate_encodings (tab->priv->loader, candidate_encodings);
+       g_slist_free (candidate_encodings);
+
        tab->priv->tmp_line_pos = line_pos;
        tab->priv->tmp_column_pos = column_pos;