util/helpers.lua

-- 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.

--

module("helpers", package.seeall);

-- Helper functions for debugging

local log = require "util.logger".init("util.debug");

function log_events(events, name, logger)

	local f = events.fire_event;

	if not f then

		error("Object does not appear to be a util.events object");

	end

	logger = logger or log;

	name = name or tostring(events);

	function events.fire_event(event, ...)

		logger("debug", "%s firing event: %s", name, event);

		return f(event, ...);

	end

	events[events.fire_event] = f;

	return events;

end

function revert_log_events(events)

	events.fire_event, events[events.fire_event] = events[events.fire_event], nil; -- :)

end

function get_upvalue(f, get_name)

	local i, name, value = 0;

	repeat

		i = i + 1;

		name, value = debug.getupvalue(f, i);

	until name == get_name or name == nil;

	return value;

end

return _M;