mapize.coffee

mapize = (str, pairSeparator, keyValueSeparator, fnKey, fnValue) ->
	map = {}
	for pair in str.split(pairSeparator)
		[key, value...] = pair.split(keyValueSeparator)
		map[fnKey(key)] = fnValue(value.join('='))
	return map

urlParams = ->
	mapize(window.location.search.substring(1), '&', '=', decodeURIComponent, decodeURIComponent)

urlParam = (name) ->
	urlParams()[name]

readCookies = ->
	trim = (str) -> str.replace(/^\s+|\s+$/g, '');
	mapize(document.cookie, ';', '=', trim, unescape)

readCookie = (name) ->
	readCookies()[name]

readSubcookie = (name, cookie) ->
	mapize(cookie, '&', '=', ((s)->s), unescape)[name]