package calendar import ( "fmt" "math" "regexp" "strconv" "strings" "time" "b612.me/astro/basic" ) var tiangan = []string{"甲", "乙", "丙", "丁", "戊", "己", "庚", "辛", "壬", "癸"} var dizhi = []string{"子", "丑", "寅", "卯", "辰", "巳", "午", "未", "申", "酉", "戌", "亥"} const ( JQ_春分 = 15 * iota JQ_清明 JQ_谷雨 JQ_立夏 JQ_小满 JQ_芒种 JQ_夏至 JQ_小暑 JQ_大暑 JQ_立秋 JQ_处暑 JQ_白露 JQ_秋分 JQ_寒露 JQ_霜降 JQ_立冬 JQ_小雪 JQ_大雪 JQ_冬至 JQ_小寒 JQ_大寒 JQ_立春 JQ_雨水 JQ_惊蛰 ) // Lunar 公历转农历 // 传入 公历年月日，时区 // 返回 农历月，日，是否闰月以及文字描述 // 按现行农历GB/T 33661-2017算法计算，推荐使用年限为[1929-3000]年 // 古代由于定朔定气误差此处计算会与古时不符 func Lunar(year, month, day int, timezone float64) (int, int, int, bool, string) { return basic.GetLunar(year, month, day, timezone/24.0) } // Solar 农历转公历 // 传入 农历年份，月，日，是否闰月，时区 // 传出 公历时间 // 农历年份用公历年份代替，但是岁首需要使用农历岁首 // 例：计算己亥猪年腊月三十日对应的公历（即2020年1月24日） // 由于农历还未到鼠年，故应当传入Solar(2019,12,30,false) // 按现行农历GB/T 33661-2017算法计算，推荐使用年限为[1929-3000]年 // 古代由于定朔定气误差此处计算会与古时不符 func Solar(year, month, day int, leap bool, timezone float64) time.Time { jde := basic.GetSolar(year, month, day, leap, timezone/24.0) zone := time.FixedZone("CST", int(timezone*3600)) return basic.JDE2DateByZone(jde, zone, true) } // SolarToLunar 公历转农历 // 传入 公历年月日 // 返回 包含农历信息的Time结构体 // 支持年份：[-103,3000] // [-103,1912] 按照古代历法提供的农历信息 // (1912,3000]按现行农历GB/T 33661-2017算法计算 func SolarToLunar(date time.Time) (Time, error) { return innerSolarToLunar(date) } func innerSolarToLunar(date time.Time) (Time, error) { if date.Year() < -103 || date.Year() > 3000 { return Time{}, fmt.Errorf("日期超出范围") } if date.Year() <= 1912 { return innerSolarToLunarHanQing(date), nil } if date.Year() < 2400 { y, m, d, l, desc := rapidLunarModern(date.Year(), int(date.Month()), date.Day()) if desc == "无法获取农历信息" { return Time{}, fmt.Errorf("无法获取农历信息") } return transformModenLunar2Time(date, y, m, d, l, desc), nil } y, m, d, l, desc := basic.GetLunar(date.Year(), int(date.Month()), date.Day(), 8.0/24.0) return transformModenLunar2Time(date, y, m, d, l, desc), nil } func transformModenLunar2Time(date time.Time, year, month, day int, leap bool, desc string) Time { return Time{ solarTime: date, lunars: []LunarTime{ { solarDate: date, year: year, month: month, day: day, leap: leap, desc: desc, comment: "", ganzhiMonth: commonGanZhiOfMonth(year, month), eras: nil, }, }, } } // LunarToSolar 农历转公历 // 传入 农历描述，如"二零二零年正月初一","元丰六年十月十二","元嘉二十七年七月庚午日" // 传出 包含公里农历信息的Time结构体切片 // 传入参数支持如下结构 // 农历年中文描述+农历月中文描述+农历日中文描述 // 农历年中文描述+农历月中文描述+干支日中文描述 // 年号+农历月中文描述+农历日中文描述 // 年号+农历月中文描述+干支日中文描述 // 支持年份：[-103,3000] func LunarToSolar(desc string) ([]Time, error) { dates, err := innerParseLunar(desc) if err != nil { return nil, err } var results []Time for _, v := range dates { date, err := SolarToLunar(v) if err != nil { return nil, err } results = append(results, date) } return results, nil } // LunarToSolarSingle 农历转公历 // 传入 农历年月日，是否闰月 // 传出 包含公里农历信息的Time结构体 // 支持年份：[-103,3000] // [-103,1912] 按照古代历法提供的农历信息,注意，这里农历月份代表的是以当时的历法推定的农历月与正月的距离，正月为1，二月为2，依次类推，闰月显示所闰月 // (1912,3000]按现行农历GB/T 33661-2017算法计算 func LunarToSolarSingle(year, month, day int, leap bool) (Time, error) { if year < -103 || year > 3000 { return Time{}, fmt.Errorf("年份超出范围") } if year <= 1912 { date := rapidSolarHan2Qing(year, month, day, leap, yearDiffLunar(year, month, day), nil) return SolarToLunar(date) } if year < 2400 { date := rapidSolarModern(year, month, day, leap) return SolarToLunar(date) } date := Solar(year, month, day, leap, 8.0) return SolarToLunar(date) } // JieQi 返回传入年份、节气对应的北京时间节气时间 func JieQi(year, term int) time.Time { calcJde := basic.GetJQTime(year, term) zone := time.FixedZone("CST", 8*3600) return basic.JDE2DateByZone(calcJde, zone, false) } // WuHou 返回传入年份、物候对应的北京时间物候时间 func WuHou(year, term int) time.Time { calcJde := basic.GetWHTime(year, term) zone := time.FixedZone("CST", 8*3600) return basic.JDE2DateByZone(calcJde, zone, false) } func rapidLunarModern(year, month, day int) (int, int, int, bool, string) { var upper = []uint16{32274, 52242, 41001, 30036, 49204, 36918, 25882, 46101, 34854, 22674, 43026, 31145, 51241, 38964, 26997, 47149, 36885, 23717, 44069, 34258, 53266, 41001, 29036, 49178, 37915, 24875, 46090, 34853, 23698, 43026, 31129, 50229, 38970, 26971, 47126, 36874, 24804, 44068, 32242, 52274, 41013, 28086, 48173, 37909, 25898, 46089, 34852, 22706, 43050, 30189, 50203, 38957, 27989, 47123, 35881, 24788, 45076, 32298, 51258, 40986, 29099, 48170, 37906, 25897, 46121, 34836, 21754, 42038, 31190, 50197, 38949, 27986, 48146, 35881, 23860, 44084, 32309, 51245, 39981, 29093, 49189, 37906, 25897, 46121, 35500, 53274, 42011, 30123, 50218, 38949, 27986, 48146, 36889, 23770, 43066, 32282, 52246, 39978, 29028, 49188, 37938, 24885, 45109, 33846, 22678, 42005, 30186, 51209, 39972, 26994, 47146, 35885, 23853, 43051, 32341, 52242, 41001, 29076, 49172, 37930, 25885, 45082, 33835, 22675, 43026, 30121, 50217, 38964, 27002, 46133, 35862, 23770, 44069, 32466, 52242, 41001, 29108, 48180, 36917, 24950, 45101, 33813, 22674, 43026, 31209, 50217, 38954, 26989, 47131, 34859, 23765, 44068, 34322, 52242, 40985, 29082, 48186, 36890, 24874, 45098, 34852, 21746, 42034, 30197, 50229, 37942, 26966, 47125, 35881, 23828, 44052, 32298, 52266, 39981, 28077, 48171, 37909, 24873, 45097, 34836, 22762, 42010, 30172, 50202, 38955, 26963, 47122, 35881, 24852, 43060, 31290, 51253, 39990, 28058, 48149, 37906, 25897, 45097, 33844, 21686, 42037, 30198, 50221, 39957, 29010, 48146, 36905, 24884, 45098, 32365, 52251, 41003, 30101, 49188, 38930, 26905, 47125, 34842, 22747, 43034, 31210, 50218, 39956, 28018, 48170, 35893, 23866, 44086, 34518, 52245, 41001, 30100, 50196, 37930, 25973, 46124, 34861, 22677, 43029, 31209, 51241, 39956, 28010, 48154, 36892, 23853, 44058, 34507, 53266, 41001, 30100, 49204, 37946, 25946, 45110, 34838, 23754, 43018, 31208, 51240, 39988, 27061, 47149, 35893, 24854, 44053, 34442, 53265, 42024, 29098, 49194, 37933, 25965, 45099, 34837, 23753, 44049, 31192, 51220, 39962, 28059, 47126, 35882, 24852, 45074, 31785, 21652, 41012, 29114, 48181, 37910, 25962, 46121, 34834, 22761, 43049, 31220, 50220, 38957, 28053, 48139, 36901, 25874, 46098, 35433, 53273, 42010, 30125, 50202, 38922, 26917, 47140, 36882, 23769, 43065, 31226, 51254, 39958, 29002, 49162, 37924, 24882, 45106, 34421, 53293, 41005, 30165, 50197, 39945, 26980, 47140, 35882, 23797, 43053, 31277, 51243, 40981, 29001, 49161, 37908, 25898, 45082, 34523, 53270, 42026, 30098, 50194, 38953, 27988, 46132, 34874, 23770, 44054, 31210, 51237, 40978, 29097, 48169, 36916, 24950, 45101, 31797, 21605, 42021, 31186, 50194, 38953, 26988, 47130, 34859, 22765, 44042, 32293, 51236, 40978, 29081, 48185, 35898, 24859, 45078, 34826, 21669, 42020, 30130, 50226, 37941, 25974, 46125, 35861, 22762, 44041, 32228, 52260, 39978, 28077, 48157, 36909, 24853, 45075, 33833, 22676, 43028, 31146, 50234, 39962, 26987, 47146, 36882, 24809, 44073, 34260, 52276, 41014, 29082, 49173, 37926, 26898, 46098, 35497, 54313, 43060, 30197, 50221, 38957, 28005, 47141, 36882, 24809, 45097, 32300, 52250, 40987, 29101, 48170, 37925, 26898, 47122, 34841, 22746, 42042, 31195, 50198, 38954, 28004, 48164, 35890, 23861, 44085, 32310, 51245, 40981, 29098, 50185, 37924, 25970, 46122, 34861, 21614, 42029, 31189, 51218, 38953, 27988, 48148, 36906, 23837, 44058, 32299, 52266, 40978, 29097, 49193, 38932, 24954, 45110, 33846, 22682, 42021, 31186, 51218, 39977, 26996, 47156, 35893, 23862, 43053, 32405, 52261, 42002, 29097, 49193, 37932, 25901, 45083, 33835, 22677, 43044, 31122, 51218, 39961, 27994} var lower = []uint8{218, 184, 92, 154, 152, 84, 170, 168, 180, 186, 184, 54, 52, 148, 82, 84, 168, 180, 108, 110, 108, 44, 150, 148, 80, 106, 216, 92, 94, 92, 44, 40, 148, 82, 180, 216, 220, 184, 90, 84, 40, 148, 84, 168, 182, 116, 180, 86, 84, 42, 40, 84, 106, 104, 108, 174, 172, 84, 84, 168, 84, 212, 216, 92, 92, 152, 76, 84, 170, 168, 180, 186, 180, 52, 154, 148, 74, 80, 168, 180, 108, 108, 46, 44, 150, 148, 80, 104, 216, 92, 94, 92, 44, 148, 148, 202, 176, 216, 218, 184, 88, 42, 40, 148, 170, 168, 182, 116, 180, 86, 84, 40, 84, 84, 106, 232, 108, 174, 172, 76, 42, 168, 84, 106, 216, 92, 56, 152, 76, 76, 168, 212, 180, 186, 180, 52, 150, 148, 72, 168, 104, 180, 182, 108, 46, 44, 148, 74, 72, 104, 108, 220, 94, 92, 44, 148, 148, 200, 216, 184, 184, 92, 88, 42, 40, 148, 170, 168, 180, 186, 180, 86, 84, 40, 84, 84, 104, 116, 108, 172, 78, 76, 166, 168, 84, 106, 216, 92, 156, 88, 76, 72, 168, 212, 180, 184, 58, 52, 84, 74, 72, 164, 104, 116, 182, 108, 44, 150, 148, 74, 72, 88, 108, 220, 92, 46, 44, 148, 74, 168, 212, 180, 184, 92, 88, 40, 148, 84, 170, 168, 180, 186, 180, 52, 42, 168, 84, 170, 104, 116, 108, 172, 46, 44, 164, 84, 212, 106, 216, 92, 92, 88, 44, 164, 164, 212, 218, 184, 186, 180, 84, 42, 72, 164, 180, 108, 182, 108, 172, 86, 84, 40, 84, 84, 108, 110, 92, 174, 172, 84, 42, 168, 212, 218, 184, 92, 172, 168, 84, 84, 168, 212, 180, 184, 86, 52, 150, 164, 84, 170, 104, 116, 182, 108, 46, 44, 164, 82, 212, 216, 108, 220, 92, 44, 40, 148, 164, 212, 218, 184, 184, 90, 84, 42, 40, 164, 180, 108, 116, 182, 172, 84, 42, 40, 84, 84, 108, 110, 92, 172, 86, 84, 42, 168, 212, 218, 184, 92, 154, 152, 84, 170, 168, 180, 116, 184, 54, 52, 148, 74, 80, 168, 180, 108, 174, 108, 44, 150, 148, 80, 106, 216, 108, 220, 92, 44, 40, 148, 82, 180, 216, 92, 184, 90, 84, 40, 148, 148, 168, 182, 116, 182, 172, 84, 42, 40, 84, 170, 104, 108, 174, 172, 84, 84, 168, 84, 212, 216, 92, 92, 154, 152, 84, 170, 168, 180, 186, 180, 54, 52, 148, 74, 80, 168, 180, 108, 108, 46, 44, 150, 148, 80, 104, 216, 92, 94, 92, 44, 148, 148, 74, 176, 216, 218, 184, 88, 42, 40, 148, 84, 168, 182, 116, 180, 86, 84, 40, 148, 84, 106, 232, 108, 174, 172, 76, 42, 168, 84, 212, 216, 92, 92, 152, 76, 72, 168, 212, 180, 186, 180, 52, 150, 148, 72, 168, 104, 180, 108, 108, 46, 44, 148, 74, 72, 104, 108, 220, 94, 92, 44, 148} if year < 1900 || year > 2400 { return 0, 0, 0, false, "超过日期限制" } useGoto := false recalc: idx := year - 1900 magic := int32(upper[idx])<<8 + int32(lower[idx]) springMonth := (magic&0x800000)>>23 + 1 springDay := (magic & 0x7FFFFF) >> 18 if !useGoto && springMonth == int32(month) && springDay == int32(day) { return year, 1, 1, false, "正月初一" } if !useGoto && (springMonth > int32(month) || (springMonth == int32(month) && springDay > int32(day))) { year-- useGoto = true goto recalc } calcYear := year if useGoto { calcYear++ } target := time.Date(calcYear, time.Month(month), day, 0, 0, 0, 0, time.Local) spring := time.Date(year, time.Month(int(springMonth)), int(springDay), 0, 0, 0, 0, time.Local) diffDay := int(target.Sub(spring).Hours() / 24) lunarMonth := 1 totalDay := 0 isLeap := false leapMonth := int(uint8(magic>>14) & 0xF) strmonth := []string{"十", "一", "二", "三", "四", "五", "六", "七", "八", "九", "十", "冬", "腊"} strday := []string{"初", "十", "廿", "三"} for i := 0; i < 13; i++ { var dayofLunar = 29 if uint8(magic&0x3FFE>>(13-i))&1 == 1 { dayofLunar++ } if totalDay+dayofLunar > diffDay { var result string if isLeap { result += "闰" } if lunarMonth == 1 { result += "正月" } else { result += strmonth[lunarMonth] + "月" } lday := diffDay - totalDay + 1 if lday == 20 { result += "二十" } else if lday == 10 { result += "初十" } else { result += strday[lday/10] + strmonth[lday%10] } return year, lunarMonth, lday, isLeap, result } totalDay += dayofLunar lunarMonth++ if lunarMonth-leapMonth == 1 && !isLeap { isLeap = true lunarMonth-- } else { isLeap = false } } return 0, 0, 0, false, "无法获取农历信息" } func rapidSolarModern(year, month, day int, isLeap bool) time.Time { var upper = []uint16{32274, 52242, 41001, 30036, 49204, 36918, 25882, 46101, 34854, 22674, 43026, 31145, 51241, 38964, 26997, 47149, 36885, 23717, 44069, 34258, 53266, 41001, 29036, 49178, 37915, 24875, 46090, 34853, 23698, 43026, 31129, 50229, 38970, 26971, 47126, 36874, 24804, 44068, 32242, 52274, 41013, 28086, 48173, 37909, 25898, 46089, 34852, 22706, 43050, 30189, 50203, 38957, 27989, 47123, 35881, 24788, 45076, 32298, 51258, 40986, 29099, 48170, 37906, 25897, 46121, 34836, 21754, 42038, 31190, 50197, 38949, 27986, 48146, 35881, 23860, 44084, 32309, 51245, 39981, 29093, 49189, 37906, 25897, 46121, 35500, 53274, 42011, 30123, 50218, 38949, 27986, 48146, 36889, 23770, 43066, 32282, 52246, 39978, 29028, 49188, 37938, 24885, 45109, 33846, 22678, 42005, 30186, 51209, 39972, 26994, 47146, 35885, 23853, 43051, 32341, 52242, 41001, 29076, 49172, 37930, 25885, 45082, 33835, 22675, 43026, 30121, 50217, 38964, 27002, 46133, 35862, 23770, 44069, 32466, 52242, 41001, 29108, 48180, 36917, 24950, 45101, 33813, 22674, 43026, 31209, 50217, 38954, 26989, 47131, 34859, 23765, 44068, 34322, 52242, 40985, 29082, 48186, 36890, 24874, 45098, 34852, 21746, 42034, 30197, 50229, 37942, 26966, 47125, 35881, 23828, 44052, 32298, 52266, 39981, 28077, 48171, 37909, 24873, 45097, 34836, 22762, 42010, 30172, 50202, 38955, 26963, 47122, 35881, 24852, 43060, 31290, 51253, 39990, 28058, 48149, 37906, 25897, 45097, 33844, 21686, 42037, 30198, 50221, 39957, 29010, 48146, 36905, 24884, 45098, 32365, 52251, 41003, 30101, 49188, 38930, 26905, 47125, 34842, 22747, 43034, 31210, 50218, 39956, 28018, 48170, 35893, 23866, 44086, 34518, 52245, 41001, 30100, 50196, 37930, 25973, 46124, 34861, 22677, 43029, 31209, 51241, 39956, 28010, 48154, 36892, 23853, 44058, 34507, 53266, 41001, 30100, 49204, 37946, 25946, 45110, 34838, 23754, 43018, 31208, 51240, 39988, 27061, 47149, 35893, 24854, 44053, 34442, 53265, 42024, 29098, 49194, 37933, 25965, 45099, 34837, 23753, 44049, 31192, 51220, 39962, 28059, 47126, 35882, 24852, 45074, 31785, 21652, 41012, 29114, 48181, 37910, 25962, 46121, 34834, 22761, 43049, 31220, 50220, 38957, 28053, 48139, 36901, 25874, 46098, 35433, 53273, 42010, 30125, 50202, 38922, 26917, 47140, 36882, 23769, 43065, 31226, 51254, 39958, 29002, 49162, 37924, 24882, 45106, 34421, 53293, 41005, 30165, 50197, 39945, 26980, 47140, 35882, 23797, 43053, 31277, 51243, 40981, 29001, 49161, 37908, 25898, 45082, 34523, 53270, 42026, 30098, 50194, 38953, 27988, 46132, 34874, 23770, 44054, 31210, 51237, 40978, 29097, 48169, 36916, 24950, 45101, 31797, 21605, 42021, 31186, 50194, 38953, 26988, 47130, 34859, 22765, 44042, 32293, 51236, 40978, 29081, 48185, 35898, 24859, 45078, 34826, 21669, 42020, 30130, 50226, 37941, 25974, 46125, 35861, 22762, 44041, 32228, 52260, 39978, 28077, 48157, 36909, 24853, 45075, 33833, 22676, 43028, 31146, 50234, 39962, 26987, 47146, 36882, 24809, 44073, 34260, 52276, 41014, 29082, 49173, 37926, 26898, 46098, 35497, 54313, 43060, 30197, 50221, 38957, 28005, 47141, 36882, 24809, 45097, 32300, 52250, 40987, 29101, 48170, 37925, 26898, 47122, 34841, 22746, 42042, 31195, 50198, 38954, 28004, 48164, 35890, 23861, 44085, 32310, 51245, 40981, 29098, 50185, 37924, 25970, 46122, 34861, 21614, 42029, 31189, 51218, 38953, 27988, 48148, 36906, 23837, 44058, 32299, 52266, 40978, 29097, 49193, 38932, 24954, 45110, 33846, 22682, 42021, 31186, 51218, 39977, 26996, 47156, 35893, 23862, 43053, 32405, 52261, 42002, 29097, 49193, 37932, 25901, 45083, 33835, 22677, 43044, 31122, 51218, 39961, 27994} var lower = []uint8{218, 184, 92, 154, 152, 84, 170, 168, 180, 186, 184, 54, 52, 148, 82, 84, 168, 180, 108, 110, 108, 44, 150, 148, 80, 106, 216, 92, 94, 92, 44, 40, 148, 82, 180, 216, 220, 184, 90, 84, 40, 148, 84, 168, 182, 116, 180, 86, 84, 42, 40, 84, 106, 104, 108, 174, 172, 84, 84, 168, 84, 212, 216, 92, 92, 152, 76, 84, 170, 168, 180, 186, 180, 52, 154, 148, 74, 80, 168, 180, 108, 108, 46, 44, 150, 148, 80, 104, 216, 92, 94, 92, 44, 148, 148, 202, 176, 216, 218, 184, 88, 42, 40, 148, 170, 168, 182, 116, 180, 86, 84, 40, 84, 84, 106, 232, 108, 174, 172, 76, 42, 168, 84, 106, 216, 92, 56, 152, 76, 76, 168, 212, 180, 186, 180, 52, 150, 148, 72, 168, 104, 180, 182, 108, 46, 44, 148, 74, 72, 104, 108, 220, 94, 92, 44, 148, 148, 200, 216, 184, 184, 92, 88, 42, 40, 148, 170, 168, 180, 186, 180, 86, 84, 40, 84, 84, 104, 116, 108, 172, 78, 76, 166, 168, 84, 106, 216, 92, 156, 88, 76, 72, 168, 212, 180, 184, 58, 52, 84, 74, 72, 164, 104, 116, 182, 108, 44, 150, 148, 74, 72, 88, 108, 220, 92, 46, 44, 148, 74, 168, 212, 180, 184, 92, 88, 40, 148, 84, 170, 168, 180, 186, 180, 52, 42, 168, 84, 170, 104, 116, 108, 172, 46, 44, 164, 84, 212, 106, 216, 92, 92, 88, 44, 164, 164, 212, 218, 184, 186, 180, 84, 42, 72, 164, 180, 108, 182, 108, 172, 86, 84, 40, 84, 84, 108, 110, 92, 174, 172, 84, 42, 168, 212, 218, 184, 92, 172, 168, 84, 84, 168, 212, 180, 184, 86, 52, 150, 164, 84, 170, 104, 116, 182, 108, 46, 44, 164, 82, 212, 216, 108, 220, 92, 44, 40, 148, 164, 212, 218, 184, 184, 90, 84, 42, 40, 164, 180, 108, 116, 182, 172, 84, 42, 40, 84, 84, 108, 110, 92, 172, 86, 84, 42, 168, 212, 218, 184, 92, 154, 152, 84, 170, 168, 180, 116, 184, 54, 52, 148, 74, 80, 168, 180, 108, 174, 108, 44, 150, 148, 80, 106, 216, 108, 220, 92, 44, 40, 148, 82, 180, 216, 92, 184, 90, 84, 40, 148, 148, 168, 182, 116, 182, 172, 84, 42, 40, 84, 170, 104, 108, 174, 172, 84, 84, 168, 84, 212, 216, 92, 92, 154, 152, 84, 170, 168, 180, 186, 180, 54, 52, 148, 74, 80, 168, 180, 108, 108, 46, 44, 150, 148, 80, 104, 216, 92, 94, 92, 44, 148, 148, 74, 176, 216, 218, 184, 88, 42, 40, 148, 84, 168, 182, 116, 180, 86, 84, 40, 148, 84, 106, 232, 108, 174, 172, 76, 42, 168, 84, 212, 216, 92, 92, 152, 76, 72, 168, 212, 180, 186, 180, 52, 150, 148, 72, 168, 104, 180, 108, 108, 46, 44, 148, 74, 72, 104, 108, 220, 94, 92, 44, 148} if year < 1900 || year > 2400 { return time.Time{} } idx := year - 1900 magic := int32(upper[idx])<<8 + int32(lower[idx]) springMonth := (magic&0x800000)>>23 + 1 springDay := (magic & 0x7FFFFF) >> 18 spring := time.Date(year, time.Month(int(springMonth)), int(springDay), 0, 0, 0, 0, time.Local) lunarMonth := 1 totalDay := 0 leap := false leapMonth := int(uint8(magic>>14) & 0xF) for i := 0; i < 13; i++ { if lunarMonth == month && isLeap == leap { target := spring.AddDate(0, 0, totalDay+day-1) return target } var dayofLunar = 29 if uint8(magic&0x3FFE>>(13-i))&1 == 1 { dayofLunar++ } totalDay += dayofLunar lunarMonth++ if lunarMonth-leapMonth == 1 && !leap { leap = true lunarMonth-- } else { leap = false } } return time.Time{} } // 中文数字到阿拉伯数字的映射 var chineseNumbers = map[string]int{ "元": 1, "一": 1, "二": 2, "三": 3, "四": 4, "五": 5, "六": 6, "七": 7, "八": 8, "九": 9, "十": 10, "十一": 11, "十二": 12, "十三": 13, "十四": 14, "十五": 15, "十六": 16, "十七": 17, "十八": 18, "十九": 19, "二十": 20, "廿一": 21, "廿二": 22, "廿三": 23, "廿四": 24, "廿五": 25, "廿六": 26, "廿七": 27, "廿八": 28, "廿九": 29, "三十": 30, "卅一": 31, } var chineseDays = map[string]int{ "初一": 1, "初二": 2, "初三": 3, "初四": 4, "初五": 5, "初六": 6, "初七": 7, "初八": 8, "初九": 9, "初十": 10, "十一": 11, "十二": 12, "十三": 13, "十四": 14, "十五": 15, "十六": 16, "十七": 17, "十八": 18, "十九": 19, "二十": 20, "廿一": 21, "廿二": 22, "廿三": 23, "廿四": 24, "廿五": 25, "廿六": 26, "廿七": 27, "廿八": 28, "廿九": 29, "三十": 30, "卅一": 31, } // 中文月份到数字的映射 var chineseMonths = map[string]int{ "正": 1, "腊": 12, "冬": 11, "十一": 11, "十二": 12, "一": 1, "二": 2, "三": 3, "四": 4, "五": 5, "六": 6, "七": 7, "八": 8, "九": 9, "十": 10, } func parseChineseDate(dateStr string) (LunarTime, error) { var result LunarTime var err error result.desc = dateStr dateStr = "公元" + dateStr // 正则表达式匹配日期格式 re := regexp.MustCompile(`^([\p{Han}]+?)([一二三四五六七八九十零〇\d]*?元?)年([\p{Han}\d]+?)月([\p{Han}\d]+?)日?$`) matches := re.FindStringSubmatch(dateStr) if len(matches) < 5 { return result, fmt.Errorf("无效的日期格式: %s", dateStr) } matches[1] = strings.TrimPrefix(matches[1], "公元") // 提取年号 result.comment = matches[1] // 转换年份 if result.comment != "" { result.year, err = convertChineseNumber(matches[2]) if err != nil { return result, fmt.Errorf("无效的年份: %s", matches[2]) } } else { // 直接转换年份 if m, _ := regexp.MatchString("\\d+", matches[2]); m { result.year, err = strconv.Atoi(matches[2]) if err != nil { return result, fmt.Errorf("无效的年份: %s", matches[2]) } } else { result.year = transfer(matches[2], true) } } // 转换月份 monthStr := matches[3] if strings.HasPrefix(monthStr, "闰") { result.leap = true monthStr = strings.TrimPrefix(monthStr, "闰") } if month, ok := chineseMonths[monthStr]; ok { result.month = month } else { if m, _ := regexp.MatchString("\\d+", monthStr); m { result.month, err = strconv.Atoi(monthStr) } else { // 尝试将月份字符串转换为数字 result.month, err = convertChineseNumber(monthStr) } if err != nil { return result, fmt.Errorf("无效的月份: %s", monthStr) } } // 转换日期 dayStr := matches[4] //判断是否是干支日 if len(dayStr) == 6 && strings.ContainsAny(dayStr, "甲乙丙丁戊己庚辛壬癸子丑寅卯辰巳午未申酉戌亥") { // 临时使用干支月代替 result.ganzhiMonth = dayStr result.day = 0 return result, nil } if day, ok := chineseDays[dayStr]; ok { result.day = day } else { if m, _ := regexp.MatchString("\\d+", dayStr); m { result.day, err = strconv.Atoi(dayStr) if err != nil { return result, fmt.Errorf("无效的日期: %s", dayStr) } return result, nil } // 尝试将日期字符串转换为数字 result.day, err = convertChineseNumber(dayStr) if err != nil { return result, fmt.Errorf("无效的日期: %s", dayStr) } } return result, nil } // convertChineseNumber 将中文数字转换为阿拉伯数字 func convertChineseNumber(chineseNum string) (int, error) { if num, ok := chineseNumbers[chineseNum]; ok { return num, nil } return transfer(chineseNum, false), nil } func number2Chinese(num int, isDirectTrans bool) string { chs := []string{"零", "一", "二", "三", "四", "五", "六", "七", "八", "九"} if isDirectTrans { var res string for i := 0; i < 4; i++ { tmp := num / (int(math.Pow10(3 - i))) if tmp == 0 && i == 0 { continue } if tmp < 0 { res = "负" num = -num } res += chs[tmp] num = num % (int(math.Pow10(3 - i))) } return res } if num < 0 || num > 99 { return "" } if num < 10 { return chs[num] } if num == 10 { return "十" } if num < 20 { return "十" + chs[num-10] } if num%10 == 0 { return chs[num/10] + "十" } return chs[num/10] + "十" + chs[num%10] } func transfer(msg string, direct bool) int { keyMap := map[rune]int{ '〇': 0, '零': 0, '一': 1, '二': 2, '三': 3, '四': 4, '五': 5, '六': 6, '七': 7, '八': 8, '九': 9, '十': 10, '百': 100, '千': 1000, '万': 10000, '亿': 100000000, '两': 2, '俩': 2, } result := 0 if direct { for _, num := range []rune(msg) { if val, match := keyMap[num]; match { result = result*10 + val } else { return 0 } } return result } secCache := 0 thrCache := 0 fKWord := map[rune]int{'百': 100, '千': 1000, '万': 10000, '亿': 100000000} for _, num := range []rune(msg) { if _, match := fKWord[num]; !match { if num == '十' && thrCache != 0 { thrCache *= keyMap[num] } else { thrCache += keyMap[num] } } else { if fKWord[num] < 10000 { secCache += thrCache * fKWord[num] thrCache = 0 } else { secCache += thrCache thrCache = 0 if secCache == 0 { result *= fKWord[num] continue } result += secCache * fKWord[num] secCache = 0 } } } result += secCache + thrCache return result } // GanZhiOfYear 返回传入年份对应的干支 func GanZhiOfYear(year int) string { return basic.GetGZ(year) } // GanZhiOfDay func GanZhiOfDay(t time.Time) string { jde := Date2JDE(time.Date(t.Year(), t.Month(), t.Day(), 0, 0, 0, 0, time.Local)) diff := int(jde - 2451550.5) if diff >= 0 { return tiangan[diff%10] + dizhi[diff%12] } return tiangan[(diff%10+10)%10] + dizhi[(diff%12+12)%12] } // 获取每年建寅月的天干 func tianGanIndexForFirstMonth(year int) int { diff := (year - 1998) * 2 if diff >= 0 { return diff % 10 } return (diff%10 + 10) % 10 } // commonGanZhiOfMonth 返回常规以建寅为正月时，指定农历月份的干支 func commonGanZhiOfMonth(year, month int) string { start := tianGanIndexForFirstMonth(year) index := (start + month - 1) % 10 return tiangan[index] + dizhi[(month+1)%12] } func ganZhiOfDayIndex(t time.Time) (int, int) { jde := Date2JDE(time.Date(t.Year(), t.Month(), t.Day(), 0, 0, 0, 0, time.Local)) diff := int(jde - 2451550.5) if diff >= 0 { return diff % 10, diff % 12 } return (diff%10 + 10) % 10, (diff%12 + 12) % 10 }