Mercurial > lxmppd-hg-xmllex / changeset

--- a/util/events.lua	Thu Jul 09 14:41:56 2009 +0100
+++ b/util/events.lua	Thu Jul 09 22:57:32 2009 +0100
@@ -1,99 +1,99 @@
-
-local ipairs = ipairs;
-local pairs = pairs;
-local t_insert = table.insert;
-local t_sort = table.sort;
-local select = select;
-
-module "events"
-
-function new()
-	local dispatchers = {};
-	local handlers = {};
-	local event_map = {};
-	local function _rebuild_index(event) -- TODO optimize index rebuilding
-		local _handlers = event_map[event];
-		local index = handlers[event];
-		if index then
-			for i=#index,1,-1 do index[i] = nil; end
-		else index = {}; handlers[event] = index; end
-		for handler in pairs(_handlers) do
-			t_insert(index, handler);
-		end
-		t_sort(index, function(a, b) return _handlers[a] > _handlers[b]; end);
-	end;
-	local function add_handler(event, handler, priority)
-		local map = event_map[event];
-		if map then
-			map[handler] = priority or 0;
-		else
-			map = {[handler] = priority or 0};
-			event_map[event] = map;
-		end
-		_rebuild_index(event);
-	end;
-	local function remove_handler(event, handler)
-		local map = event_map[event];
-		if map then
-			map[handler] = nil;
-			_rebuild_index(event);
-		end
-	end;
-	local function add_plugin(plugin)
-		for event, handler in pairs(plugin) do
-			add_handler(event, handler);
-		end
-	end;
-	local function remove_plugin(plugin)
-		for event, handler in pairs(plugin) do
-			remove_handler(event, handler);
-		end
-	end;
-	local function _create_dispatcher(event) -- FIXME duplicate code in fire_event
-		local h = handlers[event];
-		if not h then h = {}; handlers[event] = h; end
-		local dispatcher = function(...)
-			for i=1,#h do
-				local ret = h[i](...);
-				if ret ~= nil then return ret; end
-			end
-		end;
-		dispatchers[event] = dispatcher;
-		return dispatcher;
-	end;
-	local function get_dispatcher(event)
-		return dispatchers[event] or _create_dispatcher(event);
-	end;
-	local function fire_event(event, ...) -- FIXME duplicates dispatcher code
-		local h = handlers[event];
-		if h then
-			for i=1,#h do
-				local ret = h[i](...);
-				if ret ~= nil then return ret; end
-			end
-		end
-	end;
-	local function get_named_arg_dispatcher(event, ...)
-		local dispatcher = get_dispatcher(event);
-		local keys = {...};
-		local data = {};
-		return function(...)
-			for i, key in ipairs(keys) do data[key] = select(i, ...); end
-			dispatcher(data);
-		end;
-	end;
-	return {
-		add_handler = add_handler;
-		remove_handler = remove_handler;
-		add_plugin = add_plugin;
-		remove_plugin = remove_plugin;
-		get_dispatcher = get_dispatcher;
-		fire_event = fire_event;
-		get_named_arg_dispatcher = get_named_arg_dispatcher;
-		_dispatchers = dispatchers;
-		_handlers = handlers;
-		_event_map = event_map;
-	};
-end
-
-return _M;
+
+local ipairs = ipairs;
+local pairs = pairs;
+local t_insert = table.insert;
+local t_sort = table.sort;
+local select = select;
+
+module "events"
+
+function new()
+	local dispatchers = {};
+	local handlers = {};
+	local event_map = {};
+	local function _rebuild_index(event) -- TODO optimize index rebuilding
+		local _handlers = event_map[event];
+		local index = handlers[event];
+		if index then
+			for i=#index,1,-1 do index[i] = nil; end
+		else index = {}; handlers[event] = index; end
+		for handler in pairs(_handlers) do
+			t_insert(index, handler);
+		end
+		t_sort(index, function(a, b) return _handlers[a] > _handlers[b]; end);
+	end;
+	local function add_handler(event, handler, priority)
+		local map = event_map[event];
+		if map then
+			map[handler] = priority or 0;
+		else
+			map = {[handler] = priority or 0};
+			event_map[event] = map;
+		end
+		_rebuild_index(event);
+	end;
+	local function remove_handler(event, handler)
+		local map = event_map[event];
+		if map then
+			map[handler] = nil;
+			_rebuild_index(event);
+		end
+	end;
+	local function add_plugin(plugin)
+		for event, handler in pairs(plugin) do
+			add_handler(event, handler);
+		end
+	end;
+	local function remove_plugin(plugin)
+		for event, handler in pairs(plugin) do
+			remove_handler(event, handler);
+		end
+	end;
+	local function _create_dispatcher(event) -- FIXME duplicate code in fire_event
+		local h = handlers[event];
+		if not h then h = {}; handlers[event] = h; end
+		local dispatcher = function(...)
+			for i=1,#h do
+				local ret = h[i](...);
+				if ret ~= nil then return ret; end
+			end
+		end;
+		dispatchers[event] = dispatcher;
+		return dispatcher;
+	end;
+	local function get_dispatcher(event)
+		return dispatchers[event] or _create_dispatcher(event);
+	end;
+	local function fire_event(event, ...) -- FIXME duplicates dispatcher code
+		local h = handlers[event];
+		if h then
+			for i=1,#h do
+				local ret = h[i](...);
+				if ret ~= nil then return ret; end
+			end
+		end
+	end;
+	local function get_named_arg_dispatcher(event, ...)
+		local dispatcher = get_dispatcher(event);
+		local keys = {...};
+		local data = {};
+		return function(...)
+			for i, key in ipairs(keys) do data[key] = select(i, ...); end
+			dispatcher(data);
+		end;
+	end;
+	return {
+		add_handler = add_handler;
+		remove_handler = remove_handler;
+		add_plugin = add_plugin;
+		remove_plugin = remove_plugin;
+		get_dispatcher = get_dispatcher;
+		fire_event = fire_event;
+		get_named_arg_dispatcher = get_named_arg_dispatcher;
+		_dispatchers = dispatchers;
+		_handlers = handlers;
+		_event_map = event_map;
+	};
+end
+
+return _M;