using System; using System.Collections.Generic; using System.Text;
namespace calendar { class ChineseCalendar { #region ChineseCalendarException /// <summary> /// 中国日历异常处理 /// </summary> public class ChineseCalendarException : System.Exception { public ChineseCalendarException(string msg) : base(msg) { } }
#endregion #region 内部结构 private struct SolarHolidayStruct { public int Month; public int Day; public int Recess; //假期长度 public string HolidayName; public SolarHolidayStruct(int month, int day, int recess, string name) { Month = month; Day = day; Recess = recess; HolidayName = name; } }
private struct LunarHolidayStruct { public int Month; public int Day; public int Recess; public string HolidayName;
public LunarHolidayStruct(int month, int day, int recess, string name) { Month = month; Day = day; Recess = recess; HolidayName = name; } }
private struct WeekHolidayStruct { public int Month; public int WeekAtMonth; public int WeekDay; public string HolidayName;
public WeekHolidayStruct(int month, int weekAtMonth, int weekDay, string name) { Month = month; WeekAtMonth = weekAtMonth; WeekDay = weekDay; HolidayName = name; } } #endregion
#region 内部变量 private DateTime _date;
private int _cYear; private int _cMonth; private int _cDay; private bool _cIsLeapMonth; //当月是否闰月 private bool _cIsLeapYear; //当年是否有闰月 #endregion
#region 基础数据 #region 基本常量 private const int MinYear = 1900; private const int MaxYear = 2050; private static DateTime MinDay = new DateTime(1900, 1, 30); private static DateTime MaxDay = new DateTime(2049, 12, 31); private const int GanZhiStartYear = 1864; //干支计算起始年 private static DateTime GanZhiStartDay = new DateTime(1899, 12, 22);//起始日 private const string HZNum = "○一二三四五六七八九"; private const int AnimalStartYear = 1900; //1900年为鼠年 #endregion
#region 阴历数据 /// <summary> /// 来源于网上的农历数据 /// </summary> /// <remarks> /// 数据结构如下，共使用17位数据 /// 第17位：表示闰月天数，0表示29天 1表示30天 /// 第16位-第5位（共12位）表示12个月，其中第16位表示第一月，如果该月为30天则为1，29天为0 /// 第4位-第1位（共4位）表示闰月是哪个月，如果当年没有闰月，则置0 ///</remarks> private static int[] LunarDateArray = new int[]{ 0x04BD8,0x04AE0,0x0A570,0x054D5,0x0D260,0x0D950,0x16554,0x056A0,0x09AD0,0x055D2, 0x04AE0,0x0A5B6,0x0A4D0,0x0D250,0x1D255,0x0B540,0x0D6A0,0x0ADA2,0x095B0,0x14977, 0x04970,0x0A4B0,0x0B4B5,0x06A50,0x06D40,0x1AB54,0x02B60,0x09570,0x052F2,0x04970, 0x06566,0x0D4A0,0x0EA50,0x06E95,0x05AD0,0x02B60,0x186E3,0x092E0,0x1C8D7,0x0C950, 0x0D4A0,0x1D8A6,0x0B550,0x056A0,0x1A5B4,0x025D0,0x092D0,0x0D2B2,0x0A950,0x0B557, 0x06CA0,0x0B550,0x15355,0x04DA0,0x0A5B0,0x14573,0x052B0,0x0A9A8,0x0E950,0x06AA0, 0x0AEA6,0x0AB50,0x04B60,0x0AAE4,0x0A570,0x05260,0x0F263,0x0D950,0x05B57,0x056A0, 0x096D0,0x04DD5,0x04AD0,0x0A4D0,0x0D4D4,0x0D250,0x0D558,0x0B540,0x0B6A0,0x195A6, 0x095B0,0x049B0,0x0A974,0x0A4B0,0x0B27A,0x06A50,0x06D40,0x0AF46,0x0AB60,0x09570, 0x04AF5,0x04970,0x064B0,0x074A3,0x0EA50,0x06B58,0x055C0,0x0AB60,0x096D5,0x092E0, 0x0C960,0x0D954,0x0D4A0,0x0DA50,0x07552,0x056A0,0x0ABB7,0x025D0,0x092D0,0x0CAB5, 0x0A950,0x0B4A0,0x0BAA4,0x0AD50,0x055D9,0x04BA0,0x0A5B0,0x15176,0x052B0,0x0A930, 0x07954,0x06AA0,0x0AD50,0x05B52,0x04B60,0x0A6E6,0x0A4E0,0x0D260,0x0EA65,0x0D530, 0x05AA0,0x076A3,0x096D0,0x04BD7,0x04AD0,0x0A4D0,0x1D0B6,0x0D250,0x0D520,0x0DD45, 0x0B5A0,0x056D0,0x055B2,0x049B0,0x0A577,0x0A4B0,0x0AA50,0x1B255,0x06D20,0x0ADA0, 0x14B63 };
#endregion
#region 星座名称 private static string[] _constellationName = { "白羊座", "金牛座", "双子座", "巨蟹座", "狮子座", "处女座", "天秤座", "天蝎座", "射手座", "摩羯座", "水瓶座", "双鱼座" }; #endregion
#region 二十四节气 private static string[] _lunarHolidayName = { "小寒", "大寒", "立春", "雨水", "惊蛰", "春分", "清明", "谷雨", "立夏", "小满", "芒种", "夏至", "小暑", "大暑", "立秋", "处暑", "白露", "秋分", "寒露", "霜降", "立冬", "小雪", "大雪", "冬至" }; #endregion
#region 节气数据 private static string[] SolarTerm = new string[] { "小寒", "大寒", "立春", "雨水", "惊蛰", "春分", "清明", "谷雨", "立夏", "小满", "芒种", "夏至", "小暑", "大暑", "立秋", "处暑", "白露", "秋分", "寒露", "霜降", "立冬", "小雪", "大雪", "冬至" }; private static int[] sTermInfo = new int[] { 0, 21208, 42467, 63836, 85337, 107014, 128867, 150921, 173149, 195551, 218072, 240693, 263343, 285989, 308563, 331033, 353350, 375494, 397447, 419210, 440795, 462224, 483532, 504758 }; #endregion
#region 农历相关数据 private static string ganStr = "甲乙丙丁戊己庚辛壬癸"; private static string zhiStr = "子丑寅卯辰巳午未申酉戌亥"; private static string animalStr = "鼠牛虎兔龙蛇马羊猴鸡狗猪"; private static string nStr1 = "日一二三四五六七八九"; private static string nStr2 = "初十廿卅"; private static string[] _monthString = { "出错","正月","二月","三月","四月","五月","六月","七月","八月","九月","十月","十一月","腊月" }; private static string[] _dayString = {"*","初一","初二","初三","初四","初五", "初六","初七","初八","初九","初十", "十一","十二","十三","十四","十五", "十六","十七","十八","十九","二十", "廿一","廿二","廿三","廿四","廿五", "廿六","廿七","廿八","廿九","三十"}; #endregion
#region 按公历计算的节日 private static SolarHolidayStruct[] sHolidayInfo = new SolarHolidayStruct[]{ new SolarHolidayStruct(1, 1, 1, "元旦"), new SolarHolidayStruct(2, 2, 0, "世界湿地日"), new SolarHolidayStruct(2, 10, 0, "国际气象节"), new SolarHolidayStruct(2, 14, 0, "情人节"), new SolarHolidayStruct(3, 1, 0, "国际海豹日"), new SolarHolidayStruct(3, 5, 0, "学雷锋纪念日"), new SolarHolidayStruct(3, 8, 0, "妇女节"), new SolarHolidayStruct(3, 12, 0, "植树节 孙中山逝世纪念日"), new SolarHolidayStruct(3, 14, 0, "国际警察日"), new SolarHolidayStruct(3, 15, 0, "消费者权益日"), new SolarHolidayStruct(3, 17, 0, "中国国医节 国际航海日"), new SolarHolidayStruct(3, 21, 0, "世界森林日 消除种族歧视国际日 世界儿歌日"), new SolarHolidayStruct(3, 22, 0, "世界水日"), new SolarHolidayStruct(3, 24, 0, "世界防治结核病日"), new SolarHolidayStruct(4, 1, 0, "愚人节"), new SolarHolidayStruct(4, 7, 0, "世界卫生日"), new SolarHolidayStruct(4, 22, 0, "世界地球日"), new SolarHolidayStruct(5, 1, 1, "劳动节"), new SolarHolidayStruct(5, 2, 1, "劳动节假日"), new SolarHolidayStruct(5, 3, 1, "劳动节假日"), new SolarHolidayStruct(5, 4, 0, "青年节"), new SolarHolidayStruct(5, 8, 0, "世界红十字日"), new SolarHolidayStruct(5, 12, 0, "国际护士节"), new SolarHolidayStruct(5, 31, 0, "世界无烟日"), new SolarHolidayStruct(6, 1, 0, "国际儿童节"), new SolarHolidayStruct(6, 5, 0, "世界环境保护日"), new SolarHolidayStruct(6, 26, 0, "国际禁毒日"), new SolarHolidayStruct(7, 1, 0, "建党节 香港回归纪念 世界建筑日"), new SolarHolidayStruct(7, 11, 0, "世界人口日"), new SolarHolidayStruct(8, 1, 0, "建军节"), new SolarHolidayStruct(8, 8, 0, "中国男子节 父亲节"), new SolarHolidayStruct(8, 15, 0, "抗日战争胜利纪念"), new SolarHolidayStruct(9, 9, 0, "maozedong逝世纪念"), new SolarHolidayStruct(9, 10, 0, "教师节"), new SolarHolidayStruct(9, 18, 0, "九·一八事变纪念日"), new SolarHolidayStruct(9, 20, 0, "国际爱牙日"), new SolarHolidayStruct(9, 27, 0, "世界旅游日"), new SolarHolidayStruct(9, 28, 0, "孔子诞辰"), new SolarHolidayStruct(10, 1, 1, "国庆节 国际音乐日"), new SolarHolidayStruct(10, 2, 1, "国庆节假日"), new SolarHolidayStruct(10, 3, 1, "国庆节假日"), new SolarHolidayStruct(10, 6, 0, "老人节"), new SolarHolidayStruct(10, 24, 0, "联合国日"), new SolarHolidayStruct(11, 10, 0, "世界青年节"), new SolarHolidayStruct(11, 12, 0, "孙中山诞辰纪念"), new SolarHolidayStruct(12, 1, 0, "世界艾滋病日"), new SolarHolidayStruct(12, 3, 0, "世界残疾人日"), new SolarHolidayStruct(12, 20, 0, "澳门回归纪念"), new SolarHolidayStruct(12, 24, 0, "平安夜"), new SolarHolidayStruct(12, 25, 0, "圣诞节"), new SolarHolidayStruct(12, 26, 0, "maozedong诞辰纪念") }; #endregion
#region 按农历计算的节日 private static LunarHolidayStruct[] lHolidayInfo = new LunarHolidayStruct[]{ new LunarHolidayStruct(1, 1, 1, "春节"), new LunarHolidayStruct(1, 15, 0, "元宵节"), new LunarHolidayStruct(5, 5, 0, "端午节"), new LunarHolidayStruct(7, 7, 0, "七夕情人节"), new LunarHolidayStruct(7, 15, 0, "中元节 盂兰盆节"), new LunarHolidayStruct(8, 15, 0, "中秋节"), new LunarHolidayStruct(9, 9, 0, "重阳节"), new LunarHolidayStruct(12, 8, 0, "腊八节"), new LunarHolidayStruct(12, 23, 0, "北方小年(扫房)"), new LunarHolidayStruct(12, 24, 0, "南方小年(掸尘)"), //new LunarHolidayStruct(12, 30, 0, "除夕") //注意除夕需要其它方法进行计算 }; #endregion
#region 按某月第几个星期几 private static WeekHolidayStruct[] wHolidayInfo = new WeekHolidayStruct[]{ new WeekHolidayStruct(5, 2, 1, "母亲节"), new WeekHolidayStruct(5, 3, 1, "全国助残日"), new WeekHolidayStruct(6, 3, 1, "父亲节"), new WeekHolidayStruct(9, 3, 3, "国际和平日"), new WeekHolidayStruct(9, 4, 1, "国际聋人节"), new WeekHolidayStruct(10, 1, 2, "国际住房日"), new WeekHolidayStruct(10, 1, 4, "国际减轻自然灾害日"), new WeekHolidayStruct(11, 4, 5, "感恩节") }; #endregion
#endregion
#region 构造函数 #region ChinaCalendar <公历日期初始化> /// <summary> /// 用一个标准的公历日期来初使化 /// </summary> /// <param name="dt"></param> public ChineseCalendar(DateTime dt) { int i; int leap; int temp; int offset;
CheckDateLimit(dt);
_date = dt.Date;
//农历日期计算部分 leap = 0; temp = 0;
TimeSpan ts = _date - ChineseCalendar.MinDay;//计算两天的基本差距 offset = ts.Days;
for (i = MinYear; i <= MaxYear; i++) { temp = GetChineseYearDays(i); //求当年农历年天数 if (offset - temp < 1) break; else { offset = offset - temp; } } _cYear = i;
leap = GetChineseLeapMonth(_cYear);//计算该年闰哪个月 //设定当年是否有闰月 if (leap > 0) { _cIsLeapYear = true; } else { _cIsLeapYear = false; }
_cIsLeapMonth = false; for (i = 1; i <= 12; i++) { //闰月 if ((leap > 0) && (i == leap + 1) && (_cIsLeapMonth == false)) { _cIsLeapMonth = true; i = i - 1; temp = GetChineseLeapMonthDays(_cYear); //计算闰月天数 } else { _cIsLeapMonth = false; temp = GetChineseMonthDays(_cYear, i);//计算非闰月天数 }
offset = offset - temp; if (offset <= 0) break; }
offset = offset + temp; _cMonth = i; _cDay = offset; } #endregion
#region ChinaCalendar <农历日期初始化> /// <summary> /// 用农历的日期来初使化 /// </summary> /// <param name="cy">农历年</param> /// <param name="cm">农历月</param> /// <param name="cd">农历日</param> /// <param name="LeapFlag">闰月标志</param> public ChineseCalendar(int cy, int cm, int cd, bool leapMonthFlag) { int i, leap, Temp, offset;
CheckChineseDateLimit(cy, cm, cd, leapMonthFlag);
_cYear = cy; _cMonth = cm; _cDay = cd;
offset = 0;
for (i = MinYear; i < cy; i++) { Temp = GetChineseYearDays(i); //求当年农历年天数 offset = offset + Temp; }
leap = GetChineseLeapMonth(cy);// 计算该年应该闰哪个月 if (leap != 0) { this._cIsLeapYear = true; } else { this._cIsLeapYear = false; }
if (cm != leap) { _cIsLeapMonth = false; //当前日期并非闰月 } else { _cIsLeapMonth = leapMonthFlag; //使用用户输入的是否闰月月份 }
if ((_cIsLeapYear == false) || //当年没有闰月 (cm < leap)) //计算月份小于闰月 { #region ... for (i = 1; i < cm; i++) { Temp = GetChineseMonthDays(cy, i);//计算非闰月天数 offset = offset + Temp; }
//检查日期是否大于最大天 if (cd > GetChineseMonthDays(cy, cm)) { //throw new ChineseCalendarException("不合法的农历日期"); } offset = offset + cd; //加上当月的天数 #endregion } else //是闰年，且计算月份大于或等于闰月 { #region ... for (i = 1; i < cm; i++) { Temp = GetChineseMonthDays(cy, i); //计算非闰月天数 offset = offset + Temp; }
if (cm > leap) //计算月大于闰月 { Temp = GetChineseLeapMonthDays(cy); //计算闰月天数 offset = offset + Temp; //加上闰月天数
if (cd > GetChineseMonthDays(cy, cm)) { throw new ChineseCalendarException("不合法的农历日期"); } offset = offset + cd; } else //计算月等于闰月 { //如果需要计算的是闰月，则应首先加上与闰月对应的普通月的天数 if (this._cIsLeapMonth == true) //计算月为闰月 { Temp = GetChineseMonthDays(cy, cm); //计算非闰月天数 offset = offset + Temp; }
if (cd > GetChineseLeapMonthDays(cy)) { throw new ChineseCalendarException("不合法的农历日期"); } offset = offset + cd; } #endregion }
_date = MinDay.AddDays(offset); } #endregion #endregion
#region 私有函数
#region GetChineseMonthDays //传回农历 y年m月的总天数 private int GetChineseMonthDays(int year, int month) { if (BitTest32((LunarDateArray[year - MinYear] & 0x0000FFFF), (16 - month))) { return 30; } else { return 29; } } #endregion
#region GetChineseLeapMonth //传回农历 y年闰哪个月 1-12 , 没闰传回 0 private int GetChineseLeapMonth(int year) {
return LunarDateArray[year - MinYear] & 0xF;
} #endregion
#region GetChineseLeapMonthDays //传回农历 y年闰月的天数 private int GetChineseLeapMonthDays(int year) { if (GetChineseLeapMonth(year) != 0) { if ((LunarDateArray[year - MinYear] & 0x10000) != 0) { return 30; } else { return 29; } } else { return 0; } } #endregion
#region GetChineseYearDays /// <summary> /// 取农历年一年的天数 /// </summary> /// <param name="year"></param> /// <returns></returns> private int GetChineseYearDays(int year) { int i, f, sumDay, info;
sumDay = 348; //29天 X 12个月 i = 0x8000; info = LunarDateArray[year - MinYear] & 0x0FFFF;
//计算12个月中有多少天为30天 for (int m = 0; m < 12; m++) { f = info & i; if (f != 0) { sumDay++; } i = i >> 1; } return sumDay + GetChineseLeapMonthDays(year); } #endregion
#region CheckDateLimit /// <summary> /// 检查公历日期是否符合要求 /// </summary> /// <param name="dt"></param> private void CheckDateLimit(DateTime dt) { if ((dt < MinDay) || (dt > MaxDay)) { throw new ChineseCalendarException("超出可转换的日期"); } } #endregion
#region CheckChineseDateLimit /// <summary> /// 检查农历日期是否合理 /// </summary> /// <param name="year"></param> /// <param name="month"></param> /// <param name="day"></param> /// <param name="leapMonth"></param> private void CheckChineseDateLimit(int year, int month, int day, bool leapMonth) { if ((year < MinYear) || (year > MaxYear)) { throw new ChineseCalendarException("非法农历日期"); } if ((month < 1) || (month > 12)) { throw new ChineseCalendarException("非法农历日期"); } if ((day < 1) || (day > 30)) //中国的月最多30天 { throw new ChineseCalendarException("非法农历日期"); }
int leap = GetChineseLeapMonth(year);// 计算该年应该闰哪个月 if ((leapMonth == true) && (month != leap)) { throw new ChineseCalendarException("非法农历日期"); }
} #endregion
#region ConvertNumToChineseNum /// <summary> /// 将0-9转成汉字形式 /// </summary> /// <param name="n"></param> /// <returns></returns> private string ConvertNumToChineseNum(char n) { if ((n < '0') || (n > '9')) return ""; switch (n) { case '0': return HZNum[0].ToString(); case '1': return HZNum[1].ToString(); case '2': return HZNum[2].ToString(); case '3': return HZNum[3].ToString(); case '4': return HZNum[4].ToString(); case '5': return HZNum[5].ToString(); case '6': return HZNum[6].ToString(); case '7': return HZNum[7].ToString(); case '8': return HZNum[8].ToString(); case '9': return HZNum[9].ToString(); default: return ""; } } #endregion
#region BitTest32 /// <summary> /// 测试某位是否为真 /// </summary> /// <param name="num"></param> /// <param name="bitpostion"></param> /// <returns></returns> private bool BitTest32(int num, int bitpostion) {
if ((bitpostion > 31) || (bitpostion < 0)) throw new Exception("Error Param: bitpostion[0-31]:" + bitpostion.ToString());
int bit = 1 << bitpostion;
if ((num & bit) == 0) { return false; } else { return true; } } #endregion #region ConvertDayOfWeek /// <summary> /// 将星期几转成数字表示 /// </summary> /// <param name="dayOfWeek"></param> /// <returns></returns> private int ConvertDayOfWeek(DayOfWeek dayOfWeek) { switch (dayOfWeek) { case DayOfWeek.Sunday: return 1; case DayOfWeek.Monday: return 2; case DayOfWeek.Tuesday: return 3; case DayOfWeek.Wednesday: return 4; case DayOfWeek.Thursday: return 5; case DayOfWeek.Friday: return 6; case DayOfWeek.Saturday: return 7; default: return 0; } } #endregion
#region CompareWeekDayHoliday /// <summary> /// 比较当天是不是指定的第周几 /// </summary> /// <param name="date"></param> /// <param name="month"></param> /// <param name="week"></param> /// <param name="day"></param> /// <returns></returns>
private bool CompareWeekDayHoliday(DateTime date, int month, int week, int day) { bool ret = false;
if (date.Month == month) //月份相同 { if (ConvertDayOfWeek(date.DayOfWeek) == day) //星期几相同 { DateTime firstDay = new DateTime(date.Year, date.Month, 1);//生成当月第一天 int i = ConvertDayOfWeek(firstDay.DayOfWeek); int firWeekDays = 7 - ConvertDayOfWeek(firstDay.DayOfWeek) + 1; //计算第一周剩余天数
if (i > day) { if ((week - 1) * 7 + day + firWeekDays == date.Day) { ret = true; } } else {
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