/**用法

* Lunar.toSolar(2016, 6, 3); 农历转化公历

* Lunar.toLunar(2016, 7, 6); 公历转化农历

*/

var Lunar = {

MIN_YEAR : 1891,

MAX_YEAR : 2100,

lunarInfo : [

[0,2,9, 21936], [6,1,30, 9656], [0,2,17, 9584], [0,2,6, 21168], [5,1,26,43344], [0,2,13,59728],

[0,2,2, 27296], [3,1,22,44368], [0,2,10,43856], [8,1,30,19304], [0,2,19,19168], [0,2,8, 42352],

[5,1,29,21096], [0,2,16,53856], [0,2,4, 55632], [4,1,25,27304], [0,2,13,22176], [0,2,2, 39632],

[2,1,22,19176], [0,2,10,19168], [6,1,30,42200], [0,2,18,42192], [0,2,6, 53840], [5,1,26,54568],

[0,2,14,46400], [0,2,3, 54944], [2,1,23,38608], [0,2,11,38320], [7,2,1, 18872], [0,2,20,18800],

[0,2,8, 42160], [5,1,28,45656], [0,2,16,27216], [0,2,5, 27968], [4,1,24,44456], [0,2,13,11104],

[0,2,2, 38256], [2,1,23,18808], [0,2,10,18800], [6,1,30,25776], [0,2,17,54432], [0,2,6, 59984],

[5,1,26,27976], [0,2,14,23248], [0,2,4, 11104], [3,1,24,37744], [0,2,11,37600], [7,1,31,51560],

[0,2,19,51536], [0,2,8, 54432], [6,1,27,55888], [0,2,15,46416], [0,2,5, 22176], [4,1,25,43736],

[0,2,13, 9680], [0,2,2, 37584], [2,1,22,51544], [0,2,10,43344], [7,1,29,46248], [0,2,17,27808],

[0,2,6, 46416], [5,1,27,21928], [0,2,14,19872], [0,2,3, 42416], [3,1,24,21176], [0,2,12,21168],

[8,1,31,43344], [0,2,18,59728], [0,2,8, 27296], [6,1,28,44368], [0,2,15,43856], [0,2,5, 19296],

[4,1,25,42352], [0,2,13,42352], [0,2,2, 21088], [3,1,21,59696], [0,2,9, 55632], [7,1,30,23208],

[0,2,17,22176], [0,2,6, 38608], [5,1,27,19176], [0,2,15,19152], [0,2,3, 42192], [4,1,23,53864],

[0,2,11,53840], [8,1,31,54568], [0,2,18,46400], [0,2,7, 46752], [6,1,28,38608], [0,2,16,38320],

[0,2,5, 18864], [4,1,25,42168], [0,2,13,42160], [10,2,2,45656], [0,2,20,27216], [0,2,9, 27968],

[6,1,29,44448], [0,2,17,43872], [0,2,6, 38256], [5,1,27,18808], [0,2,15,18800], [0,2,4, 25776],

[3,1,23,27216], [0,2,10,59984], [8,1,31,27432], [0,2,19,23232], [0,2,7, 43872], [5,1,28,37736],

[0,2,16,37600], [0,2,5, 51552], [4,1,24,54440], [0,2,12,54432], [0,2,1, 55888], [2,1,22,23208],

[0,2,9, 22176], [7,1,29,43736], [0,2,18, 9680], [0,2,7, 37584], [5,1,26,51544], [0,2,14,43344],

[0,2,3, 46240], [4,1,23,46416], [0,2,10,44368], [9,1,31,21928], [0,2,19,19360], [0,2,8, 42416],

[6,1,28,21176], [0,2,16,21168], [0,2,5, 43312], [4,1,25,29864], [0,2,12,27296], [0,2,1, 44368],

[2,1,22,19880], [0,2,10,19296], [6,1,29,42352], [0,2,17,42208], [0,2,6, 53856], [5,1,26,59696],

[0,2,13,54576], [0,2,3, 23200], [3,1,23,27472], [0,2,11,38608], [11,1,31,19176],[0,2,19,19152],

[0,2,8, 42192], [6,1,28,53848], [0,2,15,53840], [0,2,4, 54560], [5,1,24,55968], [0,2,12,46496],

[0,2,1, 22224], [2,1,22,19160], [0,2,10,18864], [7,1,30,42168], [0,2,17,42160], [0,2,6, 43600],

[5,1,26,46376], [0,2,14,27936], [0,2,2, 44448], [3,1,23,21936], [0,2,11,37744], [8,2,1, 18808],

[0,2,19,18800], [0,2,8, 25776], [6,1,28,27216], [0,2,15,59984], [0,2,4, 27424], [4,1,24,43872],

[0,2,12,43744], [0,2,2, 37600], [3,1,21,51568], [0,2,9, 51552], [7,1,29,54440], [0,2,17,54432],

[0,2,5, 55888], [5,1,26,23208], [0,2,14,22176], [0,2,3, 42704], [4,1,23,21224], [0,2,11,21200],

[8,1,31,43352], [0,2,19,43344], [0,2,7, 46240], [6,1,27,46416], [0,2,15,44368], [0,2,5, 21920],

[4,1,24,42448], [0,2,12,42416], [0,2,2, 21168], [3,1,22,43320], [0,2,9, 26928], [7,1,29,29336],

[0,2,17,27296], [0,2,6, 44368], [5,1,26,19880], [0,2,14,19296], [0,2,3, 42352], [4,1,24,21104],

[0,2,10,53856], [8,1,30,59696], [0,2,18,54560], [0,2,7, 55968], [6,1,27,27472], [0,2,15,22224],

[0,2,5, 19168], [4,1,25,42216], [0,2,12,42192], [0,2,1, 53584], [2,1,21,55592], [0,2,9, 54560]

],

//是否闰年

isLeapYear : function(year) {

return ((year % 4 == 0 && year % 100 != 0) || (year % 400 == 0));

},

//天干地支年

lunarYear : function(year) {

var gan = ['庚', '辛', '壬', '癸', '甲', '乙', '丙', '丁', '戊', '己'],

zhi = ['申', '酉', '戌', '亥', '子', '丑', '寅', '卯', '辰', '巳', '午', '未'],

str = year.toString().split("");

return gan[str[3]] + zhi[year % 12];

},

//生肖年

zodiacYear : function(year) {

var zodiac = ['猴', '鸡', '狗', '猪', '鼠', '牛', '虎', '兔', '龙', '蛇', '马', '羊'];

return zodiac[year % 12];

},

//公历月份天数

//@param year 阳历-年

//@param month 阳历-月

solarMonthDays : function(year, month) {

var FebDays = this.isLeapYear(year) ? 29 : 28;

var monthHash = ['', 31, FebDays, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31];

return monthHash[month];

},

//农历月份天数

lunarMonthDays : function(year, month) {

var monthData = this.lunarMonths(year);

return monthData[month - 1];

},

//农历月份天数数组

lunarMonths : function(year) {

var yearData = this.lunarInfo[year - this.MIN_YEAR];

var leapMonth = yearData[0];

var bit = (+yearData[3]).toString(2);

var months = [];

for (var i = 0; i < bit.length; i++) {

months[i] = bit.substr(i, 1);

}

for (var k = 0, len = 16 - months.length; k < len; k++) {

months.unshift('0');

}

months = months.slice(0, (leapMonth == 0 ? 12 : 13));

for (var i = 0; i < months.length; i++) {

months[i] = +months[i] + 29;

}

return months;

},

//农历每年的天数

//@param year 农历年份

lunarYearDays : function(year) {

var monthArray = this.lunarYearMonths(year);

var len = monthArray.length;

return (monthArray[len-1] == 0 ? monthArray[len-2] : monthArray[len-1]);

},

//

lunarYearMonths : function(year) {

var monthData = this.lunarMonths(year);

var res = [];

var temp = 0;

var yearData = this.lunarInfo[year - this.MIN_YEAR];

var len = (yearData[0] == 0 ? 12 : 13);

for (var i = 0; i < len; i++) {

temp = 0;

for (j = 0; j <= i; j++) {

temp += monthData[j];

}

res.push(temp);

}

return res;

},

//获取闰月

//@param year 农历年份

leapMonth : function(year){

var yearData = this.lunarInfo[year - this.MIN_YEAR];

return yearData[0];

},

//计算农历日期与正月初一相隔的天数

betweenLunarDays : function(year, month, day) {

var yearMonth = this.lunarMonths(year);

var res = 0;

for (var i = 1; i < month; i++) {

res += yearMonth[i-1];

}

res += day - 1;

return res;

},

//计算2个阳历日期之间的天数

//@param year 阳历年

//@param month

//@param day

//@param l_month 阴历正月对应的阳历月份

//@param l_day 阴历初一对应的阳历天

betweenSolarDays : function(year, month, day, l_month, l_day) {

var time1 = new Date(year +"-"+ month +"-"+ day).getTime(),

time2 = new Date(year +"-"+ l_month +"-"+ l_day).getTime();

return Math.ceil((time1-time2)/24/3600/1000);

},

//根据距离正月初一的天数计算阴历日期

//@param year 阳历年

//@param between 天数

lunarByBetween : function(year, between) {

var lunarArray = [], yearMonth = [], t = 0, e = 0, leapMonth = 0, m = '';

if (between == 0) {

t = 1;

e = 1;

m = '正月';

} else {

year = between > 0 ? year : (year - 1);

yearMonth = this.lunarYearMonths(year);

leapMonth = this.leapMonth(year);

between = between > 0 ? between : (this.lunarYearDays(year) + between);

for (var i = 0; i < 13; i++) {

if (between == yearMonth[i]) {

t = i + 2;

e = 1;

break;

} else if (between < yearMonth[i]) {

t = i + 1;

e = between - ((yearMonth[i-1]) ? yearMonth[i-1] : 0) + 1;

break;

}

}

m = (leapMonth != 0 && t == leapMonth + 1)

? ('闰'. this.chineseMonth(t-1))

: this.chineseMonth(((leapMonth != 0 && leapMonth + 1 < t) ? (t - 1) : t));

}

lunarArray.push(year, t, e); //年 月 日

lunarArray.push(this.lunarYear(year),

this.zodiacYear(year),

m,

this.chineseNumber(e)); //天干地支年 生肖年 月份 日

lunarArray.push(leapMonth); //闰几月

return lunarArray;

},

//中文月份

chineseMonth : function(month) {

var monthHash = ['', '正月', '二月', '三月', '四月', '五月', '六月', '七月', '八月', '九月', '十月', '冬月', '腊月'];

return monthHash[month];

},

//中文日期

chineseNumber : function(num) {

var dateHash = ['', '一', '二', '三', '四', '五', '六', '七', '八', '九', '十'];

if (num <= 10) {

res = '初'+ dateHash[num];

} else if (num > 10 && num < 20) {

res = '十'+ dateHash[num-10];

} else if (num == 20) {

res = "二十";

} else if (num > 20 && num < 30) {

res = "廿"+ dateHash[num-20];

} else if (num == 30) {

res = "三十";

}

return res;

},

//转换农历

toLunar : function(year, month, day) {

var yearData = this.lunarInfo[year - this.MIN_YEAR];

if (year == this.MIN_YEAR && month <= 2 && day <= 9) {

return [1891, 1, 1, '辛卯', '兔', '正月', '初一'];

}

return this.lunarByBetween(year, this.betweenSolarDays(year, month, day, yearData[1], yearData[2]));

},

//转换公历

//@param year 阴历-年

//@param month 阴历-月，闰月处理：例如如果当年闰五月，那么第二个五月就传六月，相当于阴历有13个月

//@param date 阴历-日

toSolar : function(year, month, day) {

var yearData = this.lunarInfo[year - this.MIN_YEAR];

var between = this.betweenLunarDays(year, month, day);

var ms = new Date(year +"-" + yearData[1] +"-"+ yearData[2]).getTime();

var s = ms + between * 24 * 60 * 60 * 1000;

var d = new Date();

d.setTime(s);

year = d.getFullYear();

month = d.getMonth() + 1;

day = d.getDate();

return [year, month, day];

}

};