define(function (require, exports, module) {
	var calendarData = [
	0xA4B, 0x5164B, 0x6A5, 0x6D4, 0x415B5, 0x2B6, 0x957, 0x2092F, 0x497, 0x60C96, 0xD4A, 0xEA5, 0x50DA9, 0x5AD, 0x2B6, 0x3126E, 0x92E, 0x7192D, 0xC95, 0xD4A, 0x61B4A, 0xB55, 0x56A,
	0x4155B, 0x25D, 0x92D, 0x2192B, 0xA95, 0x71695, 0x6CA, 0xB55, 0x50AB5, 0x4DA, 0xA5B, 0x30A57, 0x52B, 0x8152A, 0xE95, 0x6AA, 0x615AA, 0xAB5, 0x4B6, 0x414AE, 0xA57, 0x526, 0x31D26,
	0xD95, 0x70B55, 0x56A, 0x96D, 0x5095D, 0x4AD, 0xA4D, 0x41A4D, 0xD25, 0x81AA5, 0xB54, 0xB6A, 0x612DA, 0x95B, 0x49B, 0x41497, 0xA4B, 0xA164B, 0x6A5, 0x6D4, 0x615B4, 0xAB6, 0x957,
	0x5092F, 0x497, 0x64B, 0x30D4A, 0xEA5, 0x80D65, 0x5AC, 0xAB6, 0x5126D, 0x92E, 0xC96, 0x41A95, 0xD4A, 0xDA5, 0x20B55, 0x56A, 0x7155B, 0x25D, 0x92D, 0x5192B, 0xA95, 0xB4A, 0x416AA,
	0xAD5, 0x90AB5, 0x4BA, 0xA5B, 0x60A57, 0x52B, 0xA93, 0x40E95
	];
	var madd = [0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 206, 334];
	var numString = "一二三四五六七八九十";
	var monString = "正二三四五六七八九十冬腊";
	var cYear, cMonth, cDay, theDate;

	var getBit = function (m, n) { return (m >> n) & 1; };

	var e2c = function () {
		theDate = (arguments.length != 3) ? new Date() : new Date(arguments[0], arguments[1], arguments[2]);
		var total, m, n, k;
		var isEnd = false;
		var tmp = theDate.getFullYear();
		total = (tmp - 1921) * 365 + Math.floor((tmp - 1921) / 4) + madd[theDate.getMonth()] + theDate.getDate() - 38;
		if (theDate.getYear() % 4 == 0 && theDate.getMonth() > 1) {
			total++;
		}
		for (m = 0; ; m++) {
			k = (calendarData[m] < 0xfff) ? 11 : 12;
			for (n = k; n >= 0; n--) {
				if (total <= 29 + getBit(calendarData[m], n)) {
					isEnd = true;
					break;
				}
				total = total - 29 - getBit(calendarData[m], n);
			}
			if (isEnd) break;
		}
		cYear = 1921 + m;
		cMonth = k - n + 1;
		cDay = total;
		if (k == 12) {
			if (cMonth == Math.floor(calendarData[m] / 0x10000) + 1) {
				cMonth = 1 - cMonth;
			}
			if (cMonth > Math.floor(calendarData[m] / 0x10000) + 1) {
				cMonth--;
			}
		}
	};
	var getcDateString = function () {
		var tmp = "";
		if (cMonth < 1) {
			tmp += "(闰)";
			tmp += monString.charAt(-cMonth - 1);
		} else {
			tmp += monString.charAt(cMonth - 1);
		}
		tmp += "月";
		tmp += getShortDateString();
		return tmp;
	};
	var getShortDateString = function () {
		var tmp = (cDay < 11) ? "初" : ((cDay < 20) ? "十" : ((cDay < 30) ? "廿" : "三十"));
		if (cDay % 10 != 0 || cDay == 10) {
			tmp += numString.charAt((cDay - 1) % 10);
		}

		return tmp;
	};
	var getLunarDay = function (solarYear, solarMonth, solarDay) {
		if (solarYear < 1921 || solarYear > 2020) {
			return "";
		} else {
			solarMonth = (parseInt(solarMonth) > 0) ? (solarMonth - 1) : 11;
			e2c(solarYear, solarMonth, solarDay);
			return getcDateString();
		}
	};
	var getShortLunarDay = function (solarYear, solarMonth, solarDay) {
		if (solarYear < 1921 || solarYear > 2020) {
			return "";
		} else {
			solarMonth = (parseInt(solarMonth) > 0) ? (solarMonth - 1) : 11;
			e2c(solarYear, solarMonth, solarDay);
			return getShortDateString();
		}
	};

	return {
		getDisplayDate: function (date) {
			var yy = date.getFullYear();
			var mm = date.getMonth() + 1;
			var dd = date.getDate();

			return getLunarDay(yy, mm, dd);
		},
		getShortDisplayDate: function (date) {
			var yy = date.getFullYear();
			var mm = date.getMonth() + 1;
			var dd = date.getDate();

			return getShortLunarDay(yy, mm, dd);
		}
	};
});