1 files changed, 21 insertions, 15 deletions
diff --git a/util/filters.lua b/util/filters.lua
index 6290e53b..f405c0bd 100644
--- a/util/filters.lua
+++ b/util/filters.lua
@@ -1,22 +1,22 @@
 -- Prosody IM
 -- Copyright (C) 2008-2010 Matthew Wild
 -- Copyright (C) 2008-2010 Waqas Hussain
--- 
+--
 -- This project is MIT/X11 licensed. Please see the
 -- COPYING file in the source package for more information.
 --
 
 local t_insert, t_remove = table.insert, table.remove;
 
-module "filters"
+local _ENV = nil;
 
 local new_filter_hooks = {};
 
-function initialize(session)
+local function initialize(session)
 	if not session.filters then
 		local filters = {};
 		session.filters = filters;
-		
+
 		function session.filter(type, data)
 			local filter_list = filters[type];
 			if filter_list then
@@ -28,19 +28,19 @@ function initialize(session)
 			return data;
 		end
 	end
-	
+
 	for i=1,#new_filter_hooks do
 		new_filter_hooks[i](session);
 	end
-	
+
 	return session.filter;
 end
 
-function add_filter(session, type, callback, priority)
+local function add_filter(session, type, callback, priority)
 	if not session.filters then
 		initialize(session);
 	end
-	
+
 	local filter_list = session.filters[type];
 	if not filter_list then
 		filter_list = {};
@@ -48,19 +48,19 @@ function add_filter(session, type, callback, priority)
 	elseif filter_list[callback] then
 		return; -- Filter already added
 	end
-	
+
 	priority = priority or 0;
-	
+
 	local i = 0;
 	repeat
 		i = i + 1;
 	until not filter_list[i] or filter_list[filter_list[i]] < priority;
-	
+
 	t_insert(filter_list, i, callback);
 	filter_list[callback] = priority;
 end
 
-function remove_filter(session, type, callback)
+local function remove_filter(session, type, callback)
 	if not session.filters then return; end
 	local filter_list = session.filters[type];
 	if filter_list and filter_list[callback] then
@@ -74,11 +74,11 @@ function remove_filter(session, type, callback)
 	end
 end
 
-function add_filter_hook(callback)
+local function add_filter_hook(callback)
 	t_insert(new_filter_hooks, callback);
 end
 
-function remove_filter_hook(callback)
+local function remove_filter_hook(callback)
 	for i=1,#new_filter_hooks do
 		if new_filter_hooks[i] == callback then
 			t_remove(new_filter_hooks, i);
@@ -86,4 +86,10 @@ function remove_filter_hook(callback)
 	end
 end
 
-return _M;
+return {
+	initialize = initialize;
+	add_filter = add_filter;
+	remove_filter = remove_filter;
+	add_filter_hook = add_filter_hook;
+	remove_filter_hook = remove_filter_hook;
+};