298 lines
8.5 KiB
Plaintext
298 lines
8.5 KiB
Plaintext
/**
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* 农历1900-2100的润大小信息表
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* @Array Of Property
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* @return Hex
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*/
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/* 源数据说明：
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* lunarYear数据来自香港天文台提供的源数据反向推导得出，其中201项数据分别对应1900-2100年。
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* 示例： 2021年 -- 0x06aa0
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* ╭-------┰-------┰-------┰-------┰--------╮
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* ┆ 0000 ┆ 0110 ┆ 1010 ┆ 1010 ┆ 0000 ┆
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* ┠-------╊-------╊-------╊-------╊--------┨
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* ┆ 20-17 ┆ 16-12 ┆ 12-9 ┆ 8-5 ┆ 4-1 ┆
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* ╰-------┸-------┸-------┸-------┸--------╯
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* 1-4: 表示当年有无闰年，有的话，为闰月的月份，没有的话，为0。 2021年无闰月
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* 5-16：为除了闰月外的正常月份是大月还是小月，1为30天，0为29天。从1月到12月对应的是第16位到第5位，2021年各月天数[29,30,30,29,30,29,30,29,30,29,30,29]
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* 17-20： 表示闰月是大月还是小月，仅当存在闰月的情况下有意义。(0/1,即闰大/小月)
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*/
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const lunarYears = [
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0x04bd8,
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// 1901-2000
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0x04ae0, 0x0a570, 0x054d5, 0x0d260, 0x0d950, 0x16554, 0x056a0, 0x09ad0, 0x055d2, 0x04ae0,
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0x0a5b6, 0x0a4d0, 0x0d250, 0x1d255, 0x0b540, 0x0d6a0, 0x0ada2, 0x095b0, 0x14977, 0x04970,
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0x0a4b0, 0x0b4b5, 0x06a50, 0x06d40, 0x1ab54, 0x02b60, 0x09570, 0x052f2, 0x04970, 0x06566,
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0x0d4a0, 0x0ea50, 0x16a95, 0x05ad0, 0x02b60, 0x186e3, 0x092e0, 0x1c8d7, 0x0c950, 0x0d4a0,
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0x1d8a6, 0x0b550, 0x056a0, 0x1a5b4, 0x025d0, 0x092d0, 0x0d2b2, 0x0a950, 0x0b557, 0x06ca0,
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0x0b550, 0x15355, 0x04da0, 0x0a5b0, 0x14573, 0x052b0, 0x0a9a8, 0x0e950, 0x06aa0, 0x0aea6,
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0x0ab50, 0x04b60, 0x0aae4, 0x0a570, 0x05260, 0x0f263, 0x0d950, 0x05b57, 0x056a0, 0x096d0,
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0x04dd5, 0x04ad0, 0x0a4d0, 0x0d4d4, 0x0d250, 0x0d558, 0x0b540, 0x0b6a0, 0x195a6, 0x095b0,
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0x049b0, 0x0a974, 0x0a4b0, 0x0b27a, 0x06a50, 0x06d40, 0x0af46, 0x0ab60, 0x09570, 0x04af5,
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0x04970, 0x064b0, 0x074a3, 0x0ea50, 0x06b58, 0x05ac0, 0x0ab60, 0x096d5, 0x092e0, 0x0c960,
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// 2001-2100
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0x0d954, 0x0d4a0, 0x0da50, 0x07552, 0x056a0, 0x0abb7, 0x025d0, 0x092d0, 0x0cab5, 0x0a950,
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0x0b4a0, 0x0baa4, 0x0ad50, 0x055d9, 0x04ba0, 0x0a5b0, 0x15176, 0x052b0, 0x0a930, 0x07954,
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0x06aa0, 0x0ad50, 0x05b52, 0x04b60, 0x0a6e6, 0x0a4e0, 0x0d260, 0x0ea65, 0x0d530, 0x05aa0,
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0x076a3, 0x096d0, 0x04afb, 0x04ad0, 0x0a4d0, 0x1d0b6, 0x0d250, 0x0d520, 0x0dd45, 0x0b5a0,
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0x056d0, 0x055b2, 0x049b0, 0x0a577, 0x0a4b0, 0x0aa50, 0x1b255, 0x06d20, 0x0ada0, 0x14b63,
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0x09370, 0x049f8, 0x04970, 0x064b0, 0x168a6, 0x0ea50, 0x06b20, 0x1a6c4, 0x0aae0, 0x092e0,
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0x0d2e3, 0x0c960, 0x0d557, 0x0d4a0, 0x0da50, 0x05d55, 0x056a0, 0x0a6d0, 0x055d4, 0x052d0,
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0x0a9b8, 0x0a950, 0x0b4a0, 0x0b6a6, 0x0ad50, 0x055a0, 0x0aba4, 0x0a5b0, 0x052b0, 0x0b273,
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0x06930, 0x07337, 0x06aa0, 0x0ad50, 0x14b55, 0x04b60, 0x0a570, 0x054e4, 0x0d160, 0x0e968,
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0x0d520, 0x0daa0, 0x16aa6, 0x056d0, 0x04ae0, 0x0a9d4, 0x0a2d0, 0x0d150, 0x0f252, 0x0d520
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]
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// ['月','正','一','二','三','四','五','六','七','八','九','十','冬','腊'];
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const N_STR_3 = ["\u6708", "\u6b63", "\u4e8c", "\u4e09", "\u56db", "\u4e94", "\u516d", "\u4e03", "\u516b", "\u4e5d", "\u5341", "\u51ac", "\u814a"]
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// ['日','一','二','三','四','五','六','七','八','九','十']
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const N_STR_1 = ["\u65e5", "\u4e00", "\u4e8c", "\u4e09", "\u56db", "\u4e94", "\u516d", "\u4e03", "\u516b", "\u4e5d", "\u5341"]
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// ['初','十','廿','卅','闰']
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const N_STR_2 = ["\u521d", "\u5341", "\u5eff", "\u5345", "\u95f0"]
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export type InfoType = {
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lunarY : number;
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lunarM : number;
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lunarD : number;
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isLeap : boolean;
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}
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export type LunarInfoType = {
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lYear : number;
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lMonth : number;
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lDay : number;
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IMonthCn : string;
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IDayCn : string;
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cYear : number;
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cMonth : number;
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cDay : number;
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gzYear ?: string;
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gzMonth ?: string;
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gzDay ?: string;
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isToday : boolean;
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isLeap : boolean;
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nWeek ?: number;
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ncWeek ?: string;
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isTerm ?: boolean;
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Term ?: string;
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astro ?: string
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}
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export class Lunar {
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private lunarYearDaysMap = new Map<number, number>()
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private lunarMonthDaysMap = new Map<number, number[]>()
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constructor() { }
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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 Cn string
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* @eg:let cnMonth = calendar.toChinaMonth(12) ;//cnMonth='腊月'
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*/
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toChinaMonth(m : number, leap : boolean = false) : string { // 月 => \u6708
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return leap ? (N_STR_3[4] + N_STR_3[m] + N_STR_3[0]) : (N_STR_3[m] + N_STR_3[0]);
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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:let cnDay = calendar.toChinaDay(21) ;//cnMonth='廿一'
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*/
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toChinaDay(d : number) : string { // 日 => \u65e5
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let s : string
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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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case 30:
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s = '\u4e09\u5341';
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break
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default:
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s = N_STR_2[Math.floor(d / 10)]
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s += N_STR_1[d % 10]
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}
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return (s)
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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:let leapMonth = calendar.leapMonth(1987) ;//leapMonth=6
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*/
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leapMonth(year : number) : number {
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return lunarYears[year - 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:let leapMonthDay = calendar.leapDays(1987) ;//leapMonthDay=29
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*/
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leapDays(year : number) : number {
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if (this.leapMonth(year) > 0) {
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return (lunarYears[year - 1900] & 0x10000) != 0 ? 30 : 29;
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}
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return 0;
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}
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// 某年份农历各月天数
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lunarMonthDays(year : number) : number[] {
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let monthDays = this.lunarMonthDaysMap.get(year)
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if (monthDays != null) {
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return monthDays
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}
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monthDays = [];
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let lunarYear = lunarYears[year - 1900];
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for (let i = 15; i >= 4; i--) {
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let monthDay = (lunarYear >> i & 0x1) != 0 ? 30 : 29;
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monthDays.push(monthDay);
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}
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// 添加闰月
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let leapM = this.leapMonth(year);
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if (leapM > 0) monthDays.splice(leapM, 0, this.leapDays(year));
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this.lunarMonthDaysMap.set(year, monthDays)
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return monthDays;
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}
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// 某年农历天数
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lunarYearDays(year : number) : number {
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if (this.lunarYearDaysMap.has(year)) {
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return this.lunarYearDaysMap.get(year)!
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}
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let num = 0;
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this.lunarMonthDays(year).forEach(item => {
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num += item;
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});
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this.lunarYearDaysMap.set(year, num)
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return num;
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}
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/**
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* 传入阳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(calendar.solar2lunar(1987,11,01));
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*/
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solar2lunar(y : number, m : number, d : number) : LunarInfoType { // 参数区间1900.1.31~2100.12.31
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let moonDay = this.solar_date(y, m, d);
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let lYear = moonDay.lunarY
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let lMonth = moonDay.lunarM
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let lDay = moonDay.lunarD
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let isLeap = moonDay.isLeap
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// 计算农历日期
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const IMonthCn = this.toChinaMonth(lMonth, isLeap)
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let IDayCn = lDay == 1 ? IMonthCn : this.toChinaDay(lDay)
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// 是否今天
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let isTodayObj = new Date()
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let 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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let info : LunarInfoType = {
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'lYear': lYear,
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'lMonth': lMonth,
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'lDay': lDay,
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'IMonthCn': IMonthCn,
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'IDayCn': IDayCn,
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'cYear': y,
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'cMonth': m,
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'cDay': d,
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'isToday': isToday,
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'isLeap': isLeap,
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}
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return info
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}
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solar_date(y : number, m : number, d : number) : InfoType { // 参数区间1900.1.31~2100.12.31
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let date = new Date(y, m - 1, d);
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// 参照日期 1901-02-19 正月初一
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let offset = (Date.UTC(date.getFullYear(), date.getMonth(), date.getDate()) - Date.UTC(1901, 1, 19)) / 86400000;
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let temp = 0
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let i : number;
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for (i = 1901; i < 2101 && offset > 0; i++) {
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temp = this.lunarYearDays(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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// 农历年、月、日
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let isLeap : boolean = false
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let j : number = 0;
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let monthDays = this.lunarMonthDays(i);
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let leapM = this.leapMonth(i);
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if (offset > 0) {
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for (j = 0; j < monthDays.length && offset > 0; j++) {
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temp = monthDays[j];
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offset -= temp;
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}
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if (offset == 0) {
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j++;
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}
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if (offset < 0) {
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offset += temp;
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}
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} else {
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// 补偿公历1901年2月的农历信息
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if (offset == -23) {
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let info : InfoType = {
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lunarY: i,
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lunarM: 12,
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lunarD: 8,
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isLeap: false
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}
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info = info
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}
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}
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// 矫正闰年月
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if (leapM > 0) {
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if (j == leapM + 1) {
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isLeap = true
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}
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if (j >= leapM + 1) {
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j--
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}
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}
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const info : InfoType = {
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lunarY: i,
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lunarM: j,
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lunarD: ++offset,
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isLeap: isLeap
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}
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return info
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}
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}
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