213 lines
9.2 KiB
Go
213 lines
9.2 KiB
Go
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package calendar
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import "fmt"
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type ancientEraSource struct {
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system AncientCalendarSystem
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min int
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max int
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eras []Era
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}
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var zhouAncientEras = []Era{
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{Year: -313, Emperor: "周赧王", Nianhao: "周赧王", Dynasty: "周"},
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{Year: -319, Emperor: "周慎靓王", Nianhao: "周慎靓王", Dynasty: "周"},
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{Year: -367, Emperor: "周显王", Nianhao: "周显王", Dynasty: "周"},
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{Year: -374, Emperor: "周烈王", Nianhao: "周烈王", Dynasty: "周"},
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{Year: -400, Emperor: "周安王", Nianhao: "周安王", Dynasty: "周"},
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{Year: -424, Emperor: "周威烈王", Nianhao: "周威烈王", Dynasty: "周"},
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{Year: -439, Emperor: "周考王", Nianhao: "周考王", Dynasty: "周"},
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{Year: -467, Emperor: "周贞定王", Nianhao: "周贞定王", Dynasty: "周"},
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{Year: -475, Emperor: "周元王", Nianhao: "周元王", Dynasty: "周"},
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{Year: -518, Emperor: "周敬王", Nianhao: "周敬王", Dynasty: "周"},
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{Year: -543, Emperor: "周景王", Nianhao: "周景王", Dynasty: "周"},
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{Year: -570, Emperor: "周灵王", Nianhao: "周灵王", Dynasty: "周"},
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{Year: -584, Emperor: "周简王", Nianhao: "周简王", Dynasty: "周"},
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{Year: -605, Emperor: "周定王", Nianhao: "周定王", Dynasty: "周"},
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{Year: -611, Emperor: "周匡王", Nianhao: "周匡王", Dynasty: "周"},
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{Year: -617, Emperor: "周顷王", Nianhao: "周顷王", Dynasty: "周"},
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{Year: -650, Emperor: "周襄王", Nianhao: "周襄王", Dynasty: "周"},
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{Year: -675, Emperor: "周惠王", Nianhao: "周惠王", Dynasty: "周"},
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{Year: -680, Emperor: "周僖王", Nianhao: "周僖王", Dynasty: "周"},
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{Year: -695, Emperor: "周庄王", Nianhao: "周庄王", Dynasty: "周"},
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{Year: -718, Emperor: "周桓王", Nianhao: "周桓王", Dynasty: "周"},
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{Year: -771, Emperor: "周平王", Nianhao: "周平王", Dynasty: "周"},
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}
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var luAncientEras = []Era{
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{Year: -271, Emperor: "鲁顷公", Nianhao: "鲁顷公", Dynasty: "鲁"},
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{Year: -294, Emperor: "鲁文公", Nianhao: "鲁文公", Dynasty: "鲁"},
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{Year: -313, Emperor: "鲁平公", Nianhao: "鲁平公", Dynasty: "鲁"},
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{Year: -342, Emperor: "鲁景公", Nianhao: "鲁景公", Dynasty: "鲁"},
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{Year: -351, Emperor: "鲁康公", Nianhao: "鲁康公", Dynasty: "鲁"},
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{Year: -375, Emperor: "鲁共公", Nianhao: "鲁共公", Dynasty: "鲁"},
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{Year: -406, Emperor: "鲁穆公", Nianhao: "鲁穆公", Dynasty: "鲁"},
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{Year: -427, Emperor: "鲁元公", Nianhao: "鲁元公", Dynasty: "鲁"},
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{Year: -465, Emperor: "鲁悼公", Nianhao: "鲁悼公", Dynasty: "鲁"},
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{Year: -493, Emperor: "鲁哀公", Nianhao: "鲁哀公", Dynasty: "鲁"},
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{Year: -508, Emperor: "鲁定公", Nianhao: "鲁定公", Dynasty: "鲁"},
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{Year: -540, Emperor: "鲁昭公", Nianhao: "鲁昭公", Dynasty: "鲁"},
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{Year: -571, Emperor: "鲁襄公", Nianhao: "鲁襄公", Dynasty: "鲁"},
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{Year: -589, Emperor: "鲁成公", Nianhao: "鲁成公", Dynasty: "鲁"},
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{Year: -607, Emperor: "鲁宣公", Nianhao: "鲁宣公", Dynasty: "鲁"},
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{Year: -625, Emperor: "鲁文公", Nianhao: "鲁文公", Dynasty: "鲁"},
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{Year: -658, Emperor: "鲁僖公", Nianhao: "鲁僖公", Dynasty: "鲁"},
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{Year: -660, Emperor: "鲁闵公", Nianhao: "鲁闵公", Dynasty: "鲁"},
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{Year: -692, Emperor: "鲁庄公", Nianhao: "鲁庄公", Dynasty: "鲁"},
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{Year: -710, Emperor: "鲁桓公", Nianhao: "鲁桓公", Dynasty: "鲁"},
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{Year: -721, Emperor: "鲁隐公", Nianhao: "鲁隐公", Dynasty: "鲁"},
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{Year: -767, Emperor: "鲁惠公", Nianhao: "鲁惠公", Dynasty: "鲁"},
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}
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var qinWarringAncientEras = []Era{
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{Year: -245, Emperor: "秦王政", Nianhao: "秦王政", Dynasty: "秦"},
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{Year: -248, Emperor: "秦庄襄王", Nianhao: "秦庄襄王", Dynasty: "秦"},
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{Year: -249, Emperor: "秦孝文王", Nianhao: "秦孝文王", Dynasty: "秦"},
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{Year: -305, Emperor: "秦昭襄王", Nianhao: "秦昭襄王", Dynasty: "秦"},
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}
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var qinHanAncientEras = []Era{
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{Year: -109, Emperor: "汉武帝", Nianhao: "元封", Dynasty: "西汉"},
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{Year: -115, Emperor: "汉武帝", Nianhao: "元鼎", Dynasty: "西汉"},
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{Year: -121, Emperor: "汉武帝", Nianhao: "元狩", Dynasty: "西汉"},
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{Year: -127, Emperor: "汉武帝", Nianhao: "元朔", Dynasty: "西汉"},
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{Year: -133, Emperor: "汉武帝", Nianhao: "元光", Dynasty: "西汉"},
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{Year: -139, Emperor: "汉武帝", Nianhao: "建元", Dynasty: "西汉"},
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{Year: -142, Emperor: "汉景帝", Nianhao: "后元", Dynasty: "西汉"},
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{Year: -148, Emperor: "汉景帝", Nianhao: "中元", Dynasty: "西汉"},
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{Year: -155, Emperor: "汉景帝", Nianhao: "前元", Dynasty: "西汉"},
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{Year: -162, Emperor: "汉文帝", Nianhao: "后元", Dynasty: "西汉"},
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{Year: -178, Emperor: "汉文帝", Nianhao: "前元", Dynasty: "西汉"},
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{Year: -186, Emperor: "汉高后", Nianhao: "汉高后", Dynasty: "西汉"},
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{Year: -193, Emperor: "汉惠帝", Nianhao: "汉惠帝", Dynasty: "西汉"},
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{Year: -205, Emperor: "汉高祖", Nianhao: "汉高祖", Dynasty: "西汉"},
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{Year: -208, Emperor: "秦二世", Nianhao: "秦二世", Dynasty: "秦"},
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{Year: -245, Emperor: "秦始皇", Nianhao: "秦始皇", Dynasty: "秦"},
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}
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func ancientErasForLunarYear(year int, system AncientCalendarSystem) []EraDesc {
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switch system {
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case AncientCalendarQinHan:
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return ancientErasInRange(year, qinHanAncientEras, qinHanMinYear, qinHanMaxYear)
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case AncientCalendarChunqiu, AncientCalendarLu:
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return ancientErasInRange(year, luAncientEras, ancientBoundaryMinYear, -248)
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case AncientCalendarZhuanxu:
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if eras := ancientErasInRange(year, qinWarringAncientEras, -305, ancientBoundaryMaxYear); len(eras) > 0 {
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return eras
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}
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return ancientErasInRange(year, zhouAncientEras, ancientBoundaryMinYear, -255)
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case AncientCalendarZhou, AncientCalendarHuangdi, AncientCalendarYin, AncientCalendarXia1, AncientCalendarXia2:
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return ancientErasInRange(year, zhouAncientEras, ancientBoundaryMinYear, -255)
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default:
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return nil
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}
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}
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func ancientErasInRange(year int, eras []Era, min, max int) []EraDesc {
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if len(eras) == 0 || year < min || year > max {
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return nil
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}
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return innerEras(year, func() []Era { return eras })
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}
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func ancientEraSourcesForSystem(system AncientCalendarSystem) []ancientEraSource {
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switch system {
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case AncientCalendarDefault:
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return []ancientEraSource{
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{system: AncientCalendarQinHan, min: qinHanMinYear, max: qinHanMaxYear, eras: qinHanAncientEras},
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{system: AncientCalendarChunqiu, min: ancientBoundaryMinYear, max: -480, eras: luAncientEras},
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{system: AncientCalendarZhou, min: -479, max: -255, eras: zhouAncientEras},
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}
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case AncientCalendarQinHan:
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return []ancientEraSource{{system: system, min: qinHanMinYear, max: qinHanMaxYear, eras: qinHanAncientEras}}
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case AncientCalendarChunqiu, AncientCalendarLu:
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return []ancientEraSource{{system: system, min: ancientBoundaryMinYear, max: -248, eras: luAncientEras}}
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case AncientCalendarZhuanxu:
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return []ancientEraSource{
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{system: system, min: -305, max: ancientBoundaryMaxYear, eras: qinWarringAncientEras},
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{system: system, min: ancientBoundaryMinYear, max: -255, eras: zhouAncientEras},
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}
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case AncientCalendarZhou, AncientCalendarHuangdi, AncientCalendarYin, AncientCalendarXia1, AncientCalendarXia2:
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return []ancientEraSource{{system: system, min: ancientBoundaryMinYear, max: -255, eras: zhouAncientEras}}
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default:
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return nil
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}
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}
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func lunarToSolarAncientEra(data LunarTime, system AncientCalendarSystem) ([]Time, bool, error) {
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sources := ancientEraSourcesForSystem(system)
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if len(sources) == 0 {
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return nil, false, nil
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}
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known := false
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var results []Time
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for _, source := range sources {
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years, matched := ancientEraYears(source, data.comment, data.year)
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if !matched {
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continue
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}
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known = true
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for _, year := range years {
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times, err := lunarToSolarAncientEraYear(data, year, source.system)
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if err == nil {
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results = append(results, times...)
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}
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}
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}
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if !known {
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return nil, false, nil
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}
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if len(results) == 0 {
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return nil, true, fmt.Errorf("未找到对应日期")
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}
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return results, true, nil
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}
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func ancientEraYears(source ancientEraSource, nianhao string, ordinal int) ([]int, bool) {
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var years []int
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matched := false
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for idx, era := range source.eras {
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if era.Nianhao != nianhao && era.Emperor != nianhao {
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continue
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}
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matched = true
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end := source.max
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if idx > 0 && source.eras[idx-1].Year-1 < end {
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end = source.eras[idx-1].Year - 1
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}
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year := era.Year + ordinal - 1 - era.Offset
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if year >= source.min && year >= era.Year && year <= end {
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years = append(years, year)
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}
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}
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return years, matched
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}
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func lunarToSolarAncientEraYear(data LunarTime, year int, system AncientCalendarSystem) ([]Time, error) {
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if data.houMonth && system != AncientCalendarQinHan && system != AncientCalendarZhuanxu {
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return nil, fmt.Errorf("未找到对应日期")
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}
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if data.ganzhiMonth == "" || data.day != 0 {
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result, err := LunarToSolarByYMDWithCalendar(year, data.month, data.day, data.leap, system)
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if err != nil {
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return nil, err
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}
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return []Time{result}, nil
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}
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var results []Time
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for day := 1; day <= 30; day++ {
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result, err := LunarToSolarByYMDWithCalendar(year, data.month, day, data.leap, system)
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if err != nil {
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continue
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}
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if GanZhiOfDay(result.Solar()) == data.ganzhiMonth {
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results = append(results, result)
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}
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}
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if len(results) == 0 {
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return nil, fmt.Errorf("未找到对应日期")
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}
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return results, nil
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}
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