lunar-lite/lib/days.js

精简版的农历和阳历日期转换库。

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.getTotalDaysOfSolarMonth = exports.getTotalDaysOfLunarMonth = exports.getTotalDaysOfLunarYear = void 0;
var leap_1 = require("./leap");
var constants_1 = require("./constants");
/**
 * 返回农历年一整年的总天数
 *
 * @param year 农历年份
 * @return number
 * @example
 * count = getTotalDaysOfLunarYear(1987) ;//count=387
 */
var getTotalDaysOfLunarYear = function (year) {
    var sum = 348;
    for (var i = 0x8000; i > 0x8; i >>= 1) {
        sum += constants_1.LUNAR_INFO[year - 1900] & i ? 1 : 0;
    }
    return sum + (0, leap_1.getLeapDays)(year);
};
exports.getTotalDaysOfLunarYear = getTotalDaysOfLunarYear;
/**
 * 返回农历月（非闰月）的总天数，计算闰月时的天数请使用getLeapDays方法
 *
 * @param year 农历年份
 * @param month 农历月份，取值【1～12】
 * @return 29 | 30
 * @example
 * MonthDay = getTotalDaysOfLunarMonth(1987,9) ;//MonthDay=29
 */
var getTotalDaysOfLunarMonth = function (year, month) {
    if (month > 12 || month < 1) {
        throw new Error("invalid month.");
    }
    return constants_1.LUNAR_INFO[year - 1900] & (0x10000 >> month) ? 30 : 29;
};
exports.getTotalDaysOfLunarMonth = getTotalDaysOfLunarMonth;
/**
 * 返回公历月的天数
 *
 * @param year 公历年
 * @param month 公历月，取值【1～12】，若参数错误 返回-1
 * @return 28 | 29 | 30 | 31
 * @example
 * solarMonthDay = getTotalDaysOfSolarMonth(1987, 1) ; // solarMonthDay=30
 */
var getTotalDaysOfSolarMonth = function (year, month) {
    if (month > 12 || month < 1) {
        throw new Error("invalid month.");
    }
    if (month === 2) {
        // 2月份的闰平规律测算后确认返回28或29
        return (year % 4 === 0 && year % 100 !== 0) || year % 400 === 0 ? 29 : 28;
    }
    return constants_1.SOLAR_MONTH[month - 1];
};
exports.getTotalDaysOfSolarMonth = getTotalDaysOfSolarMonth;