From 8e2e557633ded9f0774e25f73b026ac9a673c037 Mon Sep 17 00:00:00 2001
From: Matthias Clasen <matthiasc@src.gnome.org>
Date: Mon, 3 Dec 2007 15:43:20 +0000
Subject: [PATCH] Speed up group lookups

svn path=/trunk/; revision=6018
---
 ChangeLog       |  5 +++++
 glib/gkeyfile.c | 24 ++++++++++++------------
 2 files changed, 17 insertions(+), 12 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index f873f04..70d0ce1 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2007-12-03  Matthias Clasen  <mclasen@redhat.com>
+
+	* glib/gkeyfile.c: Add a hash table to speed up group lookups,
+	which GKeyFile does quite a lot.  
+
 2007-12-03  Alexander Larsson  <alexl@redhat.com>
 
         * configure.in:
diff --git a/glib/gkeyfile.c b/glib/gkeyfile.c
index 72c5761..ac7e495 100644
--- a/glib/gkeyfile.c
+++ b/glib/gkeyfile.c
@@ -67,6 +67,7 @@ typedef struct _GKeyFileGroup GKeyFileGroup;
 struct _GKeyFile
 {
   GList *groups;
+  GHashTable *group_hash;
 
   GKeyFileGroup *start_group;
   GKeyFileGroup *current_group;
@@ -199,6 +200,7 @@ g_key_file_init (GKeyFile *key_file)
 {  
   key_file->current_group = g_slice_new0 (GKeyFileGroup);
   key_file->groups = g_list_prepend (NULL, key_file->current_group);
+  key_file->group_hash = g_hash_table_new (g_str_hash, g_str_equal);
   key_file->start_group = NULL;
   key_file->parse_buffer = g_string_sized_new (128);
   key_file->approximate_size = 0;
@@ -2802,8 +2804,8 @@ g_key_file_get_group_comment (GKeyFile     *key_file,
   GList *group_node;
   GKeyFileGroup *group;
   
-  group_node = g_key_file_lookup_group_node (key_file, group_name);
-  if (!group_node)
+  group = g_key_file_lookup_group (key_file, group_name);
+  if (!group)
     {
       g_set_error (error, G_KEY_FILE_ERROR,
                    G_KEY_FILE_ERROR_GROUP_NOT_FOUND,
@@ -2813,10 +2815,10 @@ g_key_file_get_group_comment (GKeyFile     *key_file,
       return NULL;
     }
 
-  group = (GKeyFileGroup *)group_node->data;
   if (group->comment)
     return g_strdup (group->comment->value);
   
+  group_node = g_key_file_lookup_group_node (key_file, group_name);
   group_node = group_node->next;
   group = (GKeyFileGroup *)group_node->data;  
   return get_group_comment (key_file, group, error);
@@ -2923,7 +2925,7 @@ g_key_file_has_group (GKeyFile    *key_file,
   g_return_val_if_fail (key_file != NULL, FALSE);
   g_return_val_if_fail (group_name != NULL, FALSE);
 
-  return g_key_file_lookup_group_node (key_file, group_name) != NULL;
+  return g_key_file_lookup_group (key_file, group_name) != NULL;
 }
 
 /**
@@ -2996,6 +2998,8 @@ g_key_file_add_group (GKeyFile    *key_file,
 
   if (key_file->start_group == NULL)
     key_file->start_group = group;
+
+  g_hash_table_insert (key_file->group_hash, group->name, group);
 }
 
 static void
@@ -3050,6 +3054,9 @@ g_key_file_remove_group_node (GKeyFile *key_file,
 
   group = (GKeyFileGroup *) group_node->data;
 
+  if (group->name)
+    g_hash_table_remove (key_file->group_hash, group->name);
+
   /* If the current group gets deleted make the current group the last
    * added group.
    */
@@ -3250,14 +3257,7 @@ static GKeyFileGroup *
 g_key_file_lookup_group (GKeyFile    *key_file,
 			 const gchar *group_name)
 {
-  GList *group_node;
-
-  group_node = g_key_file_lookup_group_node (key_file, group_name);
-
-  if (group_node != NULL)
-    return (GKeyFileGroup *) group_node->data; 
-
-  return NULL;
+  return (GKeyFileGroup *)g_hash_table_lookup (key_file->group_hash, group_name);
 }
 
 static GList *
-- 
2.7.4