445 lines
12 KiB
JavaScript
445 lines
12 KiB
JavaScript
/**
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* @1900-2100区间内的公历、农历互转
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* @charset UTF-8
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* @author Ajing(JJonline@JJonline.Cn)
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* @Time 2014-7-21
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* @Version $ID$
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* @公历转农历：solarLunar.solar2lunar(1987,11,01); //[you can ignore params of prefix 0]
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* @农历转公历：solarLunar.lunar2solar(1987,09,10); //[you can ignore params of prefix 0]
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* @link http://blog.jjonline.cn/userInterFace/173.html
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*/
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import lunarInfo from '../const/lunarInfo';
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import solarMonth from '../const/solarMonth';
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import gan from '../const/gan';
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import zhi from '../const/zhi';
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import animals from '../const/animals';
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import lunarTerm from '../const/lunarTerm';
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import lTermInfo from '../const/lTermInfo';
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import nStr1 from '../const/nStr1';
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import nStr2 from '../const/nStr2';
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import nStr3 from '../const/nStr3';
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import nStr4 from '../const/nStr4';
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const solarLunar = {
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lunarInfo,
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solarMonth,
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gan,
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zhi,
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animals,
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lunarTerm,
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lTermInfo,
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nStr1,
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nStr2,
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nStr3,
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nStr4,
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/**
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* 返回农历y年一整年的总天数
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* @param lunar Year
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* @return Number
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* @eg:var count = solarLunar.lYearDays(1987) ;//count=387
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*/
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lYearDays: function (y) {
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var i, sum = 348;
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for (i = 0x8000; i > 0x8; i >>= 1) {
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sum += (solarLunar.lunarInfo[y - 1900] & i) ? 1 : 0;
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}
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return (sum + solarLunar.leapDays(y));
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},
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/**
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* 返回农历y年闰月是哪个月；若y年没有闰月 则返回0
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* @param lunar Year
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* @return Number (0-12)
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* @eg:var leapMonth = solarLunar.leapMonth(1987) ;//leapMonth=6
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*/
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leapMonth: function (y) { //闰字编码 \u95f0
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return (solarLunar.lunarInfo[y - 1900] & 0xf);
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},
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/**
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* 返回农历y年闰月的天数 若该年没有闰月则返回0
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* @param lunar Year
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* @return Number (0、29、30)
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* @eg:var leapMonthDay = solarLunar.leapDays(1987) ;//leapMonthDay=29
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*/
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leapDays: function (y) {
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if (solarLunar.leapMonth(y)) {
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return ((solarLunar.lunarInfo[y - 1900] & 0x10000) ? 30 : 29);
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}
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return (0);
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},
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/**
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* 返回农历 y 年 m 月（非闰月）的总天数，计算 m 为闰月时的天数请使用 leapDays 方法
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* @param lunar Year
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* @return Number (-1、29、30)
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* @eg:var MonthDay = solarLunar.monthDays(1987,9) ;//MonthDay=29
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*/
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monthDays: function (y, m) {
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if (m > 12 || m < 1) {
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return -1;
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}//月份参数从1至12，参数错误返回-1
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return ((solarLunar.lunarInfo[y - 1900] & (0x10000 >> m)) ? 30 : 29);
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},
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/**
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* 返回公历(!)y年m月的天数
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* @param solar Year
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* @return Number (-1、28、29、30、31)
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* @eg:var solarMonthDay = solarLunar.leapDays(1987) ;//solarMonthDay=30
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*/
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solarDays: function (y, m) {
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if (m > 12 || m < 1) {
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return -1;
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} //若参数错误 返回-1
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var ms = m - 1;
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if (ms == 1) { //2月份的闰平规律测算后确认返回28或29
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return (((y % 4 == 0) && (y % 100 != 0) || (y % 400 == 0)) ? 29 : 28);
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} else {
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return (solarLunar.solarMonth[ms]);
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}
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},
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/**
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* 传入offset偏移量返回干支
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* @param offset 相对甲子的偏移量
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* @return Cn string
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*/
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toGanZhi: function (offset) {
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return (solarLunar.gan[offset % 10] + solarLunar.zhi[offset % 12]);
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},
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/**
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* 传入公历(!) y 年获得该年第 n 个节气的公历日期
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* @param y公历年(1900-2100)；n二十四节气中的第几个节气(1~24)；从n=1(小寒)算起
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* @return number Number
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* @eg:var _24 = solarLunar.getTerm(1987,3) ;//_24=4;意即1987年2月4日立春
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*/
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getTerm: function (y, n) {
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if (y < 1900 || y > 2100) {
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return -1;
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}
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if (n < 1 || n > 24) {
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return -1;
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}
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var _table = solarLunar.lTermInfo[y - 1900];
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var _info = [
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parseInt('0x' + _table.substr(0, 5)).toString(),
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parseInt('0x' + _table.substr(5, 5)).toString(),
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parseInt('0x' + _table.substr(10, 5)).toString(),
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parseInt('0x' + _table.substr(15, 5)).toString(),
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parseInt('0x' + _table.substr(20, 5)).toString(),
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parseInt('0x' + _table.substr(25, 5)).toString()
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];
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var _calDay = [
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_info[0].substr(0, 1),
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_info[0].substr(1, 2),
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_info[0].substr(3, 1),
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_info[0].substr(4, 2),
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_info[1].substr(0, 1),
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_info[1].substr(1, 2),
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_info[1].substr(3, 1),
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_info[1].substr(4, 2),
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_info[2].substr(0, 1),
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_info[2].substr(1, 2),
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_info[2].substr(3, 1),
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_info[2].substr(4, 2),
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_info[3].substr(0, 1),
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_info[3].substr(1, 2),
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_info[3].substr(3, 1),
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_info[3].substr(4, 2),
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_info[4].substr(0, 1),
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_info[4].substr(1, 2),
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_info[4].substr(3, 1),
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_info[4].substr(4, 2),
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_info[5].substr(0, 1),
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_info[5].substr(1, 2),
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_info[5].substr(3, 1),
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_info[5].substr(4, 2)
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];
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return parseInt(_calDay[n - 1]);
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},
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/**
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* 传入农历年份数字返回汉语通俗表示法
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* @param lunar year
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* @return string
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* @eg:
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*/
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toChinaYear: function (y) { //年 => \u5E74
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var oxxx = parseInt(y / 1000);
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var xoxx = parseInt(y % 1000 / 100);
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var xxox = parseInt(y % 100 / 10);
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var xxxo = y % 10;
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return solarLunar.nStr4[oxxx] + solarLunar.nStr4[xoxx] + solarLunar.nStr4[xxox] + solarLunar.nStr4[xxxo] + "\u5E74";
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},
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/**
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* 传入农历数字月份返回汉语通俗表示法
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* @param lunar month
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* @return number string
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* @eg:var cnMonth = solarLunar.toChinaMonth(12) ;//cnMonth='腊月'
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*/
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toChinaMonth: function (m) { // 月 => \u6708
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if (m > 12 || m < 1) {
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return -1;
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} //若参数错误 返回-1
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var s = solarLunar.nStr3[m - 1];
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s += "\u6708";//加上月字
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return s;
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},
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/**
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* 传入农历日期数字返回汉字表示法
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* @param lunar day
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* @return Cn string
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* @eg:var cnDay = solarLunar.toChinaDay(21) ;//cnMonth='廿一'
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*/
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toChinaDay: function (d) { //日 => \u65e5
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var s;
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switch (d) {
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case 10:
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s = '\u521d\u5341';
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break;
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case 20:
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s = '\u4e8c\u5341';
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break;
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break;
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case 30:
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s = '\u4e09\u5341';
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break;
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break;
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default:
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s = solarLunar.nStr2[Math.floor(d / 10)];
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s += solarLunar.nStr1[d % 10];
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}
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return (s);
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},
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/**
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* 年份转生肖[!仅能大致转换] => 精确划分生肖分界线是“立春”
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* @param y year
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* @return Cn string
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* @eg:var animal = solarLunar.getAnimal(1987) ;//animal='兔'
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* todo 生肖需要精确转换
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*/
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getAnimal: function (y) {
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return solarLunar.animals[(y - 4) % 12];
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},
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/**
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* 传入公历年月日获得详细的公历、农历object信息 <=>JSON
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* @param y solar year
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* @param m solar month
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* @param d solar day
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* @return JSON object
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* @eg:console.log(solarLunar.solar2lunar(1987,11,01));
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*/
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solar2lunar: function (y, m, d) { //参数区间1900.1.31~2100.12.31
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if (y < 1900 || y > 2100) {
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return -1;
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}//年份限定、上限
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if (y == 1900 && m == 1 && d < 31) {
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return -1;
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}//下限
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if (!y) { //未传参 获得当天
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var objDate = new Date();
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} else {
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var objDate = new Date(y, parseInt(m) - 1, d);
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}
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var i, leap = 0, temp = 0;
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//修正ymd参数
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var y = objDate.getFullYear(), m = objDate.getMonth() + 1, d = objDate.getDate();
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var offset = (Date.UTC(objDate.getFullYear(), objDate.getMonth(), objDate.getDate()) - Date.UTC(1900, 0, 31)) / 86400000;
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for (i = 1900; i < 2101 && offset > 0; i++) {
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temp = solarLunar.lYearDays(i);
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offset -= temp;
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}
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if (offset < 0) {
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offset += temp;
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i--;
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}
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//是否今天
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var isTodayObj = new Date(), isToday = false;
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if (isTodayObj.getFullYear() == y && isTodayObj.getMonth() + 1 == m && isTodayObj.getDate() == d) {
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isToday = true;
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}
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//星期几
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var nWeek = objDate.getDay(), cWeek = solarLunar.nStr1[nWeek];
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if (nWeek == 0) {
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nWeek = 7;
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}//数字表示周几顺应天朝周一开始的惯例
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//农历年
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var year = i;
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var leap = solarLunar.leapMonth(i); //闰哪个月
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var isLeap = false;
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//效验闰月
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for (i = 1; i < 13 && offset > 0; i++) {
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//闰月
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if (leap > 0 && i == (leap + 1) && isLeap == false) {
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--i;
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isLeap = true;
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temp = solarLunar.leapDays(year); //计算农历闰月天数
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}
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else {
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temp = solarLunar.monthDays(year, i);//计算农历普通月天数
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}
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//解除闰月
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if (isLeap == true && i == (leap + 1)) {
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isLeap = false;
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}
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offset -= temp;
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}
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if (offset == 0 && leap > 0 && i == leap + 1)
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if (isLeap) {
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isLeap = false;
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} else {
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isLeap = true;
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--i;
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}
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if (offset < 0) {
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offset += temp;
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--i;
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}
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//农历月
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var month = i;
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//农历日
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var day = offset + 1;
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//天干地支处理
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var sm = m - 1;
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var term3 = solarLunar.getTerm(y, 3); //该公历年立春日期
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var gzY = solarLunar.toGanZhi(y - 4);//普通按年份计算，下方尚需按立春节气来修正
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var termTimestamp = new Date(y, 1, term3).getTime();
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var dayTimestamp = new Date(y, sm, d).getTime();
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//依据立春日进行修正gzY
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if (dayTimestamp < termTimestamp) {
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gzY = solarLunar.toGanZhi(y - 5);
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}
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//月柱 1900年1月小寒以前为 丙子月(60进制12)
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var firstNode = solarLunar.getTerm(y, (m * 2 - 1));//返回当月「节」为几日开始
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var secondNode = solarLunar.getTerm(y, (m * 2));//返回当月「节」为几日开始
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//依据12节气修正干支月
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var gzM = solarLunar.toGanZhi((y - 1900) * 12 + m + 11);
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if (d >= firstNode) {
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gzM = solarLunar.toGanZhi((y - 1900) * 12 + m + 12);
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}
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//传入的日期的节气与否
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var isTerm = false;
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var term = "";
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if (firstNode == d) {
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isTerm = true;
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term = solarLunar.lunarTerm[m * 2 - 2];
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}
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if (secondNode == d) {
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isTerm = true;
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term = solarLunar.lunarTerm[m * 2 - 1];
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}
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//日柱 当月一日与 1900/1/1 相差天数
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var dayCyclical = Date.UTC(y, sm, 1, 0, 0, 0, 0) / 86400000 + 25567 + 10;
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var gzD = solarLunar.toGanZhi(dayCyclical + d - 1);
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return {
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'lYear': year,
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'lMonth': month,
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'lDay': day,
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'animal': solarLunar.getAnimal(year),
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'yearCn': solarLunar.toChinaYear(year),
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'monthCn': (isLeap && leap === month ? "\u95f0" : '') + solarLunar.toChinaMonth(month),
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'dayCn': solarLunar.toChinaDay(day),
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'cYear': y,
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'cMonth': m,
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'cDay': d,
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'gzYear': gzY,
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'gzMonth': gzM,
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'gzDay': gzD,
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'isToday': isToday,
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'isLeap': isLeap,
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'nWeek': nWeek,
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'ncWeek': "\u661f\u671f" + cWeek,
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'isTerm': isTerm,
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'term': term
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};
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},
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/**
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* 传入公历年月日以及传入的月份是否闰月获得详细的公历、农历object信息 <=>JSON
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* @param y lunar year
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* @param m lunar month
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* @param d lunar day
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* @param isLeapMonth lunar month is leap or not.
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* @return JSON object
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* @eg:console.log(solarLunar.lunar2solar(1987,9,10));
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*/
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lunar2solar: function (y, m, d, isLeapMonth) { //参数区间1900.1.31~2100.12.1
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var leapOffset = 0;
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var leapMonth = solarLunar.leapMonth(y);
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var leapDay = solarLunar.leapDays(y);
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if (isLeapMonth && (leapMonth != m)) {
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return -1;
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}//传参要求计算该闰月公历 但该年得出的闰月与传参的月份并不同
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if (y == 2100 && m == 12 && d > 1 || y == 1900 && m == 1 && d < 31) {
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return -1;
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}//超出了最大极限值
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var day = solarLunar.monthDays(y, m);
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if (y < 1900 || y > 2100 || d > day) {
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return -1;
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}//参数合法性效验
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//计算农历的时间差
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var offset = 0;
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for (var i = 1900; i < y; i++) {
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offset += solarLunar.lYearDays(i);
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}
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var leap = 0, isAdd = false;
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for (var i = 1; i < m; i++) {
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leap = solarLunar.leapMonth(y);
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if (!isAdd) {//处理闰月
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if (leap <= i && leap > 0) {
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offset += solarLunar.leapDays(y);
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isAdd = true;
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}
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}
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offset += solarLunar.monthDays(y, i);
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}
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//转换闰月农历 需补充该年闰月的前一个月的时差
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if (isLeapMonth) {
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offset += day;
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}
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//1900年农历正月一日的公历时间为1900年1月30日0时0分0秒(该时间也是本农历的最开始起始点)
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var stmap = Date.UTC(1900, 1, 30, 0, 0, 0);
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var calObj = new Date((offset + d - 31) * 86400000 + stmap);
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var cY = calObj.getUTCFullYear();
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var cM = calObj.getUTCMonth() + 1;
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var cD = calObj.getUTCDate();
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return solarLunar.solar2lunar(cY, cM, cD);
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}
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};
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export default solarLunar;
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