litejs/date/parse.js

Single-page application framework

function createParser(def) {
	var maskRe = /(\[)((?:\\?.)*?)\]|([YMD])\3\3\3?|([YMDHhmsWSZ])(\4?)|[uUASwoQ]|(["\\\n\r\u2028\u2029])/g
	, escapeRe = /[.*+?^=!:${}()|\[\]\/\\]/g
	, pos = {Y:0, M:1, D:2, h:3, m:4, s:5, S:6}
	, f = []
	, r = []
	, g = 1
	, i = 0
	, len = def.length

	for (; i<len; i++) {
		var startLen = g
		, arr = [1970, 0, 1, 0, 0, 0, 0]
		, _re = def[i].replace(maskRe, function(match, quote, text, MD, single, pad, esc) {
			return esc || text ?
			(esc || text).replace(escapeRe, "\\$&") :
			(arr[pos[MD || single]]="m[" + (g++) + "]") && "(\\d+)"
		})

		if (arr[1]) arr[1]+="-1"
		//arr[4]+="-(" + new Date().getTimezoneOffset() + ")"

		f.push("m[" + startLen + "]?new Date(Date.UTC(" + arr + "))")
		r.push(_re)
	}

	return Function("r", "return function(u){var m=r.exec(u);return m?" + f.join(":") + ":null:null}")(RegExp("^(?:" + r.join("|") + ")$"))
}
exports.createParser = createParser