万年历源码 (zt)

//首先声明,这是我转载的。我的笔记大家可以共用。。让我们感谢他。。。
致看到这些源代码的兄弟:
     你好!
     这本来是我为一个商业PDA产品开发的日历程序,最近移植于PC机上, 所以算

 和数据部分是用纯C++写的,不涉及MFC,所有的代码都是以短节省存储空间为主要

 的.
   很高兴你对这些代码有兴趣,你可以随意复制和使用些代码,唯一有一点小小的
 愿望:在你使用和复制给别人时,别忘注明这些代码作者:-)。程序代码也就罢了,

 面的数据可是我辛辛苦苦从万年历上找出来输进去的。
   如果你有什么好的意见不妨Mail给我。

     [email protected]
   或
   [email protected]
                                                               2000年3月
**************************************************************************
**
}

unit Calendar;

interface

uses SysUtils,Windows;

const
START_YEAR=1901;
END_YEAR=2050;

// ==> function IsLeapYear(Year: Word): Boolean;

//计算iYear,iMonth,iDay对应是星期几 1年1月1日 --- 65535年12月31日
function WeekDay(iYear,iMonth,iDay:Integer):Integer;
// ==> function DayOfWeek(Date: TDateTime): Integer;

//计算指定日期的周数,周0为新年开始后第一个星期天开始的周
function WeekNum(const TDT:TDateTime):Word;overload;
function WeekNum(const iYear,iMonth,iDay:Integer):Word;overload;

//返回iYear年iMonth月的天数 1年1月 --- 65535年12月
function MonthDays(iYear,iMonth:Integer):Integer;

//返回阴历iLunarYer年阴历iLunarMonth月的天数,如果iLunarMonth为闰月,
//高字为第二个iLunarMonth月的天数,否则高字为0
// 1901年1月---2050年12月
function LunarMonthDays(iLunarYear,iLunarMonth:Integer):Integer;

//返回阴历iLunarYear年的总天数
// 1901年1月---2050年12月
function LunarYearDays(iLunarYear:Integer):Integer;

//返回阴历iLunarYear年的闰月月份,如没有返回0
// 1901年1月---2050年12月
function GetLeapMonth(iLunarYear:Integer):Integer;

//把iYear年格式化成天干记年法表示的字符串
procedure FormatLunarYear(iYear:Integer;var pBuffer:string);overload;
function FormatLunarYear(iYear:Integer):string;overload;

//把iMonth格式化成中文字符串
procedure FormatMonth(iMonth:Integer;var
pBuffer:string;bLunar:Boolean=True);overload;
function FormatMonth(iMonth:Integer;bLunar:Boolean=True):string;overload;

//把iDay格式化成中文字符串
procedure FormatLunarDay(iDay:Integer;var pBuffer:string);overload;
function FormatLunarDay(iDay:Integer):string;overload;

//计算公历两个日期间相差的天数  1年1月1日 --- 65535年12月31日
function
CalcDateDiff(iEndYear,iEndMonth,iEndDay:Integer;iStartYear:Integer=START_Y
EAR;iStartMonth:Integer=1;iStartDay:Integer=1):Integer;overload;
function CalcDateDiff(EndDate,StartDate:TDateTime):Integer;overload;

//计算公历iYear年iMonth月iDay日对应的阴历日期,返回对应的阴历节气 0-24
//1901年1月1日---2050年12月31日
function GetLunarDate(iYear,iMonth,iDay:Integer;var
iLunarYear,iLunarMonth,iLunarDay:Integer):Integer;overload;
procedure GetLunarDate(InDate:TDateTime;var
iLunarYear,iLunarMonth,iLunarDay:Integer);overload;

function GetLunarHolDay(InDate:TDateTime):string;overload;
function GetLunarHolDay(iYear,iMonth,iDay:Integer):string;overload;

//private function--------------------------------------

//计算从1901年1月1日过iSpanDays天后的阴历日期
procedure l_CalcLunarDate(var
iYear,iMonth,iDay:Integer;iSpanDays:Longint);

//计算公历iYear年iMonth月iDay日对应的节气 0-24,0表不是节气
function l_GetLunarHolDay(iYear,iMonth,iDay:Integer):Integer;

implementation

var
//数组gLunarDay存入阴历1901年到2100年每年中的月天数信息,
//阴历每月只能是29或30天,一年用12(或13)个二进制位表示,对应位为1表30
天,否则为29天
gLunarMonthDay:array[0..149] of Integer=(
  //测试数据只有1901.1.1 --2050.12.31
  $4ae0, $a570, $5268, $d260, $d950, $6aa8, $56a0, $9ad0, $4ae8, $4ae0,
//1910
  $a4d8, $a4d0, $d250, $d548, $b550, $56a0, $96d0, $95b0, $49b8, $49b0,
//1920
  $a4b0, $b258, $6a50, $6d40, $ada8, $2b60, $9570, $4978, $4970, $64b0,
//1930
  $d4a0, $ea50, $6d48, $5ad0, $2b60, $9370, $92e0, $c968, $c950, $d4a0,
//1940
  $da50, $b550, $56a0, $aad8, $25d0, $92d0, $c958, $a950, $b4a8, $6ca0,
//1950
  $b550, $55a8, $4da0, $a5b0, $52b8, $52b0, $a950, $e950, $6aa0, $ad50,
//1960
  $ab50, $4b60, $a570, $a570, $5260, $e930, $d950, $5aa8, $56a0, $96d0,
//1970
  $4ae8, $4ad0, $a4d0, $d268, $d250, $d528, $b540, $b6a0, $96d0, $95b0,
//1980
  $49b0, $a4b8, $a4b0, $b258, $6a50, $6d40, $ada0, $ab60, $9370, $4978,
//1990
  $4970, $64b0, $6a50, $ea50, $6b28, $5ac0, $ab60, $9368, $92e0, $c960,
//2000
  $d4a8, $d4a0, $da50, $5aa8, $56a0, $aad8, $25d0, $92d0, $c958, $a950,
//2010
  $b4a0, $b550, $b550, $55a8, $4ba0, $a5b0, $52b8, $52b0, $a930, $74a8,
//2020
  $6aa0, $ad50, $4da8, $4b60, $9570, $a4e0, $d260, $e930, $d530, $5aa0,
//2030
  $6b50, $96d0, $4ae8, $4ad0, $a4d0, $d258, $d250, $d520, $daa0, $b5a0,
//2040
  $56d0, $4ad8, $49b0, $a4b8, $a4b0, $aa50, $b528, $6d20, $ada0, $55b0);
//2050

//数组gLanarMonth存放阴历1901年到2050年闰月的月份,如没有则为0,每字节存两

gLunarMonth:array[0..74] of Byte=(
  $00, $50, $04, $00, $20,   //1910
  $60, $05, $00, $20, $70,   //1920
  $05, $00, $40, $02, $06,   //1930
  $00, $50, $03, $07, $00,   //1940
  $60, $04, $00, $20, $70,   //1950
  $05, $00, $30, $80, $06,   //1960
  $00, $40, $03, $07, $00,   //1970
  $50, $04, $08, $00, $60,   //1980
  $04, $0a, $00, $60, $05,   //1990
  $00, $30, $80, $05, $00,   //2000
  $40, $02, $07, $00, $50,   //2010
  $04, $09, $00, $60, $04,   //2020
  $00, $20, $60, $05, $00,   //2030
  $30, $b0, $06, $00, $50,   //2040
  $02, $07, $00, $50, $03);  //2050

//数组gLanarHoliDay存放每年的二十四节气对应的阳历日期
//每年的二十四节气对应的阳历日期几乎固定,平均分布于十二个月中
//   1月          2月         3月         4月         5月         6月
//小寒 大寒   立春  雨水   惊蛰 春分   清明 谷雨   立夏 小满   芒种 夏至
//   7月          8月         9月         10月       11月        12月
//小暑 大暑   立秋  处暑   白露 秋分   寒露 霜降   立冬 小雪   大雪 冬至
{*************************************************************************
********
节气无任何确定规律,所以只好存表,要节省空间,所以....
**************************************************************************
********}
//数据格式说明:
//如1901年的节气为
//  1月     2月     3月   4月    5月   6月   7月    8月   9月    10月  11
月     12月
// 6, 21, 4, 19,  6, 21, 5, 21, 6,22, 6,22, 8, 23, 8, 24, 8, 24, 8, 24, 8,
23, 8, 22
// 9, 6,  11,4,   9, 6,  10,6,  9,7,  9,7,  7, 8,  7, 9,  7,  9, 7,  9, 7,
8, 7, 15
//上面第一行数据为每月节气对应日期,15减去每月第一个节气,每月第二个节气减去
15得第二行
// 这样每月两个节气对应数据都小于16,每月用一个字节存放,高位存放第一个节气
数据,低位存放
//第二个节气的数据,可得下表
gLunarHolDay:array[0..1799] of Byte=(
  $96, $B4, $96, $A6, $97, $97, $78, $79, $79, $69, $78, $77,   //1901
  $96, $A4, $96, $96, $97, $87, $79, $79, $79, $69, $78, $78,   //1902
  $96, $A5, $87, $96, $87, $87, $79, $69, $69, $69, $78, $78,   //1903
  $86, $A5, $96, $A5, $96, $97, $88, $78, $78, $79, $78, $87,   //1904
  $96, $B4, $96, $A6, $97, $97, $78, $79, $79, $69, $78, $77,   //1905
  $96, $A4, $96, $96, $97, $97, $79, $79, $79, $69, $78, $78,   //1906
  $96, $A5, $87, $96, $87, $87, $79, $69, $69, $69, $78, $78,   //1907
  $86, $A5, $96, $A5, $96, $97, $88, $78, $78, $69, $78, $87,   //1908
  $96, $B4, $96, $A6, $97, $97, $78, $79, $79, $69, $78, $77,   //1909
  $96, $A4, $96, $96, $97, $97, $79, $79, $79, $69, $78, $78,   //1910
  $96, $A5, $87, $96, $87, $87, $79, $69, $69, $69, $78, $78,   //1911
  $86, $A5, $96, $A5, $96, $97, $88, $78, $78, $69, $78, $87,   //1912
  $95, $B4, $96, $A6, $97, $97, $78, $79, $79, $69, $78, $77,   //1913
  $96, $B4, $96, $A6, $97, $97, $79, $79, $79, $69, $78, $78,   //1914
  $96, $A5, $97, $96, $97, $87, $79, $79, $69, $69, $78, $78,   //1915
  $96, $A5, $96, $A5, $96, $97, $88, $78, $78, $79, $77, $87,   //1916
  $95, $B4, $96, $A6, $96, $97, $78, $79, $78, $69, $78, $87,   //1917
  $96, $B4, $96, $A6, $97, $97, $79, $79, $79, $69, $78, $77,   //1918
  $96, $A5, $97, $96, $97, $87, $79, $79, $69, $69, $78, $78,   //1919
  $96, $A5, $96, $A5, $96, $97, $88, $78, $78, $79, $77, $87,   //1920
  $95, $B4, $96, $A5, $96, $97, $78, $79, $78, $69, $78, $87,   //1921
  $96, $B4, $96, $A6, $97, $97, $79, $79, $79, $69, $78, $77,   //1922
  $96, $A4, $96, $96, $97, $87, $79, $79, $69, $69, $78, $78,   //1923
  $96, $A5, $96, $A5, $96, $97, $88, $78, $78, $79, $77, $87,   //1924
  $95, $B4, $96, $A5, $96, $97, $78, $79, $78, $69, $78, $87,   //1925
  $96, $B4, $96, $A6, $97, $97, $78, $79, $79, $69, $78, $77,   //1926
  $96, $A4, $96, $96, $97, $87, $79, $79, $79, $69, $78, $78,   //1927
  $96, $A5, $96, $A5, $96, $96, $88, $78, $78, $78, $87, $87,   //1928
  $95, $B4, $96, $A5, $96, $97, $88, $78, $78, $79, $77, $87,   //1929
  $96, $B4, $96, $A6, $97, $97, $78, $79, $79, $69, $78, $77,   //1930
  $96, $A4, $96, $96, $97, $87, $79, $79, $79, $69, $78, $78,   //1931
  $96, $A5, $96, $A5, $96, $96, $88, $78, $78, $78, $87, $87,   //1932
  $95, $B4, $96, $A5, $96, $97, $88, $78, $78, $69, $78, $87,   //1933
  $96, $B4, $96, $A6, $97, $97, $78, $79, $79, $69, $78, $77,   //1934
  $96, $A4, $96, $96, $97, $97, $79, $79, $79, $69, $78, $78,   //1935
  $96, $A5, $96, $A5, $96, $96, $88, $78, $78, $78, $87, $87,   //1936
  $95, $B4, $96, $A5, $96, $97, $88, $78, $78, $69, $78, $87,   //1937
  $96, $B4, $96, $A6, $97, $97, $78, $79, $79, $69, $78, $77,   //1938
  $96, $A4, $96, $96, $97, $97, $79, $79, $79, $69, $78, $78,   //1939
  $96, $A5, $96, $A5, $96, $96, $88, $78, $78, $78, $87, $87,   //1940
  $95, $B4, $96, $A5, $96, $97, $88, $78, $78, $69, $78, $87,   //1941
  $96, $B4, $96, $A6, $97, $97, $78, $79, $79, $69, $78, $77,   //1942
  $96, $A4, $96, $96, $97, $97, $79, $79, $79, $69, $78, $78,   //1943
  $96, $A5, $96, $A5, $A6, $96, $88, $78, $78, $78, $87, $87,   //1944
  $95, $B4, $96, $A5, $96, $97, $88, $78, $78, $79, $77, $87,   //1945
  $95, $B4, $96, $A6, $97, $97, $78, $79, $78, $69, $78, $77,   //1946
  $96, $B4, $96, $A6, $97, $97, $79, $79, $79, $69, $78, $78,   //1947
  $96, $A5, $A6, $A5, $A6, $96, $88, $88, $78, $78, $87, $87,   //1948
  $A5, $B4, $96, $A5, $96, $97, $88, $79, $78, $79, $77, $87,   //1949
  $95, $B4, $96, $A5, $96, $97, $78, $79, $78, $69, $78, $77,   //1950
  $96, $B4, $96, $A6, $97, $97, $79, $79, $79, $69, $78, $78,   //1951
  $96, $A5, $A6, $A5, $A6, $96, $88, $88, $78, $78, $87, $87,   //1952
  $A5, $B4, $96, $A5, $96, $97, $88, $78, $78, $79, $77, $87,   //1953
  $95, $B4, $96, $A5, $96, $97, $78, $79, $78, $68, $78, $87,   //1954
  $96, $B4, $96, $A6, $97, $97, $78, $79, $79, $69, $78, $77,   //1955
  $96, $A5, $A5, $A5, $A6, $96, $88, $88, $78, $78, $87, $87,   //1956
  $A5, $B4, $96, $A5, $96, $97, $88, $78, $78, $79, $77, $87,   //1957
  $95, $B4, $96, $A5, $96, $97, $88, $78, $78, $69, $78, $87,   //1958
  $96, $B4, $96, $A6, $97, $97, $78, $79, $79, $69, $78, $77,   //1959
  $96, $A4, $A5, $A5, $A6, $96, $88, $88, $88, $78, $87, $87,   //1960
  $A5, $B4, $96, $A5, $96, $96, $88, $78, $78, $78, $87, $87,   //1961
  $96, $B4, $96, $A5, $96, $97, $88, $78, $78, $69, $78, $87,   //1962
  $96, $B4, $96, $A6, $97, $97, $78, $79, $79, $69, $78, $77,   //1963
  $96, $A4, $A5, $A5, $A6, $96, $88, $88, $88, $78, $87, $87,   //1964
  $A5, $B4, $96, $A5, $96, $96, $88, $78, $78, $78, $87, $87,   //1965
  $95, $B4, $96, $A5, $96, $97, $88, $78, $78, $69, $78, $87,   //1966
  $96, $B4, $96, $A6, $97, $97, $78, $79, $79, $69, $78, $77,   //1967
  $96, $A4, $A5, $A5, $A6, $A6, $88, $88, $88, $78, $87, $87,   //1968
  $A5, $B4, $96, $A5, $96, $96, $88, $78, $78, $78, $87, $87,   //1969
  $95, $B4, $96, $A5, $96, $97, $88, $78, $78, $69, $78, $87,   //1970
  $96, $B4, $96, $A6, $97, $97, $78, $79, $79, $69, $78, $77,   //1971
  $96, $A4, $A5, $A5, $A6, $A6, $88, $88, $88, $78, $87, $87,   //1972
  $A5, $B5, $96, $A5, $A6, $96, $88, $78, $78, $78, $87, $87,   //1973
  $95, $B4, $96, $A5, $96, $97, $88, $78, $78, $69, $78, $87,   //1974
  $96, $B4, $96, $A6, $97, $97, $78, $79, $78, $69, $78, $77,   //1975
  $96, $A4, $A5, $B5, $A6, $A6, $88, $89, $88, $78, $87, $87,   //1976
  $A5, $B4, $96, $A5, $96, $96, $88, $88, $78, $78, $87, $87,   //1977
  $95, $B4, $96, $A5, $96, $97, $88, $78, $78, $79, $78, $87,   //1978
  $96, $B4, $96, $A6, $96, $97, $78, $79, $78, $69, $78, $77,   //1979
  $96, $A4, $A5, $B5, $A6, $A6, $88, $88, $88, $78, $87, $87,   //1980
  $A5, $B4, $96, $A5, $A6, $96, $88, $88, $78, $78, $77, $87,   //1981
  $95, $B4, $96, $A5, $96, $97, $88, $78, $78, $79, $77, $87,   //1982
  $95, $B4, $96, $A5, $96, $97, $78, $79, $78, $69, $78, $77,   //1983
  $96, $B4, $A5, $B5, $A6, $A6, $87, $88, $88, $78, $87, $87,   //1984
  $A5, $B4, $A6, $A5, $A6, $96, $88, $88, $78, $78, $87, $87,   //1985
  $A5, $B4, $96, $A5, $96, $97, $88, $78, $78, $79, $77, $87,   //1986
  $95, $B4, $96, $A5, $96, $97, $88, $79, $78, $69, $78, $87,   //1987
  $96, $B4, $A5, $B5, $A6, $A6, $87, $88, $88, $78, $87, $86,   //1988
  $A5, $B4, $A5, $A5, $A6, $96, $88, $88, $88, $78, $87, $87,   //1989
  $A5, $B4, $96, $A5, $96, $96, $88, $78, $78, $79, $77, $87,   //1990
  $95, $B4, $96, $A5, $86, $97, $88, $78, $78, $69, $78, $87,   //1991
  $96, $B4, $A5, $B5, $A6, $A6, $87, $88, $88, $78, $87, $86,   //1992
  $A5, $B3, $A5, $A5, $A6, $96, $88, $88, $88, $78, $87, $87,   //1993
  $A5, $B4, $96, $A5, $96, $96, $88, $78, $78, $78, $87, $87,   //1994
  $95, $B4, $96, $A5, $96, $97, $88, $76, $78, $69, $78, $87,   //1995
  $96, $B4, $A5, $B5, $A6, $A6, $87, $88, $88, $78, $87, $86,   //1996
  $A5, $B3, $A5, $A5, $A6, $A6, $88, $88, $88, $78, $87, $87,   //1997
  $A5, $B4, $96, $A5, $96, $96, $88, $78, $78, $78, $87, $87,   //1998
  $95, $B4, $96, $A5, $96, $97, $88, $78, $78, $69, $78, $87,   //1999
  $96, $B4, $A5, $B5, $A6, $A6, $87, $88, $88, $78, $87, $86,   //2000
  $A5, $B3, $A5, $A5, $A6, $A6, $88, $88, $88, $78, $87, $87,   //2001
  $A5, $B4, $96, $A5, $96, $96, $88, $78, $78, $78, $87, $87,   //2002
  $95, $B4, $96, $A5, $96, $97, $88, $78, $78, $69, $78, $87,   //2003
  $96, $B4, $A5, $B5, $A6, $A6, $87, $88, $88, $78, $87, $86,   //2004
  $A5, $B3, $A5, $A5, $A6, $A6, $88, $88, $88, $78, $87, $87,   //2005
  $A5, $B4, $96, $A5, $A6, $96, $88, $88, $78, $78, $87, $87,   //2006
  $95, $B4, $96, $A5, $96, $97, $88, $78, $78, $69, $78, $87,   //2007
  $96, $B4, $A5, $B5, $A6, $A6, $87, $88, $87, $78, $87, $86,   //2008
  $A5, $B3, $A5, $B5, $A6, $A6, $88, $88, $88, $78, $87, $87,   //2009
  $A5, $B4, $96, $A5, $A6, $96, $88, $88, $78, $78, $87, $87,   //2010
  $95, $B4, $96, $A5, $96, $97, $88, $78, $78, $79, $78, $87,   //2011
  $96, $B4, $A5, $B5, $A5, $A6, $87, $88, $87, $78, $87, $86,   //2012
  $A5, $B3, $A5, $B5, $A6, $A6, $87, $88, $88, $78, $87, $87,   //2013
  $A5, $B4, $96, $A5, $A6, $96, $88, $88, $78, $78, $87, $87,   //2014
  $95, $B4, $96, $A5, $96, $97, $88, $78, $78, $79, $77, $87,   //2015
  $95, $B4, $A5, $B4, $A5, $A6, $87, $88, $87, $78, $87, $86,   //2016
  $A5, $C3, $A5, $B5, $A6, $A6, $87, $88, $88, $78, $87, $87,   //2017
  $A5, $B4, $A6, $A5, $A6, $96, $88, $88, $78, $78, $87, $87,   //2018
  $A5, $B4, $96, $A5, $96, $96, $88, $78, $78, $79, $77, $87,   //2019
  $95, $B4, $A5, $B4, $A5, $A6, $97, $87, $87, $78, $87, $86,   //2020
  $A5, $C3, $A5, $B5, $A6, $A6, $87, $88, $88, $78, $87, $86,   //2021
  $A5, $B4, $A5, $A5, $A6, $96, $88, $88, $88, $78, $87, $87,   //2022
  $A5, $B4, $96, $A5, $96, $96, $88, $78, $78, $79, $77, $87,   //2023
  $95, $B4, $A5, $B4, $A5, $A6, $97, $87, $87, $78, $87, $96,   //2024
  $A5, $C3, $A5, $B5, $A6, $A6, $87, $88, $88, $78, $87, $86,   //2025
  $A5, $B3, $A5, $A5, $A6, $A6, $88, $88, $88, $78, $87, $87,   //2026
  $A5, $B4, $96, $A5, $96, $96, $88, $78, $78, $78, $87, $87,   //2027
  $95, $B4, $A5, $B4, $A5, $A6, $97, $87, $87, $78, $87, $96,   //2028
  $A5, $C3, $A5, $B5, $A6, $A6, $87, $88, $88, $78, $87, $86,   //2029
  $A5, $B3, $A5, $A5, $A6, $A6, $88, $88, $88, $78, $87, $87,   //2030
  $A5, $B4, $96, $A5, $96, $96, $88, $78, $78, $78, $87, $87,   //2031
  $95, $B4, $A5, $B4, $A5, $A6, $97, $87, $87, $78, $87, $96,   //2032
  $A5, $C3, $A5, $B5, $A6, $A6, $88, $88, $88, $78, $87, $86,   //2033
  $A5, $B3, $A5, $A5, $A6, $A6, $88, $78, $88, $78, $87, $87,   //2034
  $A5, $B4, $96, $A5, $A6, $96, $88, $88, $78, $78, $87, $87,   //2035
  $95, $B4, $A5, $B4, $A5, $A6, $97, $87, $87, $78, $87, $96,   //2036
  $A5, $C3, $A5, $B5, $A6, $A6, $87, $88, $88, $78, $87, $86,   //2037
  $A5, $B3, $A5, $A5, $A6, $A6, $88, $88, $88, $78, $87, $87,   //2038
  $A5, $B4, $96, $A5, $A6, $96, $88, $88, $78, $78, $87, $87,   //2039
  $95, $B4, $A5, $B4, $A5, $A6, $97, $87, $87, $78, $87, $96,   //2040
  $A5, $C3, $A5, $B5, $A5, $A6, $87, $88, $87, $78, $87, $86,   //2041
  $A5, $B3, $A5, $B5, $A6, $A6, $88, $88, $88, $78, $87, $87,   //2042
  $A5, $B4, $96, $A5, $A6, $96, $88, $88, $78, $78, $87, $87,   //2043
  $95, $B4, $A5, $B4, $A5, $A6, $97, $87, $87, $88, $87, $96,   //2044
  $A5, $C3, $A5, $B4, $A5, $A6, $87, $88, $87, $78, $87, $86,   //2045
  $A5, $B3, $A5, $B5, $A6, $A6, $87, $88, $88, $78, $87, $87,   //2046
  $A5, $B4, $96, $A5, $A6, $96, $88, $88, $78, $78, $87, $87,   //2047
  $95, $B4, $A5, $B4, $A5, $A5, $97, $87, $87, $88, $86, $96,   //2048
  $A4, $C3, $A5, $A5, $A5, $A6, $97, $87, $87, $78, $87, $86,   //2049
  $A5, $C3, $A5, $B5, $A6, $A6, $87, $88, $78, $78, $87, $87);  //2050

function WeekDay(iYear,iMonth,iDay:Integer):Integer;
begin
Result:=DayOfWeek(EncodeDate(iYear,iMonth,iDay));
end;

function WeekNum(const TDT:TDateTime):Word;
var
Y,M,D:Word;
dtTmp:TDateTime;
begin
DecodeDate(TDT,Y,M,D);
dtTmp:=EnCodeDate(Y,1,1);
Result:=(Trunc(TDT-dtTmp)+(DayOfWeek(dtTmp)-1)) div 7;
if Result=0 then
  Result:=51
else
  Result:=Result-1;
end;

function WeekNum(const iYear,iMonth,iDay:Integer):Word;
begin
Result:=WeekNum(EncodeDate(iYear,iMonth,iDay));
end;

function MonthDays(iYear,iMonth:Integer):Integer;
begin
case iMonth of
  1,3,5,7,8,10,12: Result:=31;
  4,6,9,11: Result:=30;
  2://如果是闰年
    if IsLeapYear(iYear) then
      Result:=29
    else
      Result:=28
else
  Result:=0;
end;
end;

function GetLeapMonth(iLunarYear:Integer):Integer;
var
Flag:Byte;
begin
Flag:=gLunarMonth[(iLunarYear-START_YEAR) div 2];
if (iLunarYear-START_YEAR) mod 2=0 then
  Result:=Flag shr 4
else
  Result:=Flag and $0F;
end;

function LunarMonthDays(iLunarYear,iLunarMonth:Integer):Integer;
var
Height,Low,iBit:Integer;
begin
if iLunarYear<START_YEAR then
begin
  Result:=30;
  Exit;
end;
Height:=0;
Low:=29;
iBit:=16-iLunarMonth;
if (iLunarMonth>GetLeapMonth(iLunarYear)) and
(GetLeapMonth(iLunarYear)>0) then
  Dec(iBit);
if (gLunarMonthDay[iLunarYear-START_YEAR] and (1 shl iBit))>0 then
  Inc(Low);
if iLunarMonth=GetLeapMonth(iLunarYear) then
  if (gLunarMonthDay[iLunarYear-START_YEAR] and (1 shl (iBit-1)))>0 then
    Height:=30
  else
    Height:=29;
Result:=MakeLong(Low,Height);
end;

function LunarYearDays(iLunarYear:Integer):Integer;
var
Days,i,tmp:Integer;
begin
Days:=0;
for i:=1 to 12 do
begin
  tmp:=LunarMonthDays(iLunarYear,i);
  Days:=Days+HiWord(tmp);
  Days:=Days+LoWord(tmp);
end;
Result:=Days;
end;

procedure FormatLunarYear(iYear:Integer;var pBuffer:string);
var
szText1,szText2,szText3:string;
begin
szText1:='甲乙丙丁戊己庚辛壬癸';
szText2:='子丑寅卯辰巳午未申酉戌亥';
szText3:='鼠牛虎免龙蛇马羊猴鸡狗猪';
pBuffer:=Copy(szText1,((iYear-4) mod 10)*2+1,2);
pBuffer:=pBuffer+Copy(szText2,((iYear-4) mod 12)*2+1,2);
pBuffer:=pBuffer+' ';
pBuffer:=pBuffer+Copy(szText3,((iYear-4) mod 12)*2+1,2);
pBuffer:=pBuffer+'年';
end;

function FormatLunarYear(iYear:Integer):string;
var
pBuffer:string;
begin
FormatLunarYear(iYear,pBuffer);
Result:=pBuffer;
end;

procedure FormatMonth(iMonth:Integer;var pBuffer:string;bLunar:Boolean);
var
szText:string;
begin
if (not bLunar) and (iMonth=1) then
begin
  pBuffer:=' 一月';
  Exit;
end;
szText:='正二三四五六七八九十';
if iMonth<=10 then
begin
  pBuffer:=' ';
  pBuffer:=pBuffer+Copy(szText,(iMonth-1)*2+1,2);
  pBuffer:=pBuffer+'月';
  Exit;
end;
if iMonth=11 then
  pBuffer:='十一'
else
  pBuffer:='十二';
pBuffer:=pBuffer+'月';
end;

function FormatMonth(iMonth:Integer;bLunar:Boolean):string;
var
pBuffer:string;
begin
FormatMonth(iMonth,pBuffer,bLunar);
Result:=pBuffer;
end;

procedure FormatLunarDay(iDay:Integer;var pBuffer:string);
var
szText1,szText2:string;
begin
szText1:='初十廿三';
szText2:='一二三四五六七八九十';
if (iDay<>20) and (iDay<>30) then
begin
  pBuffer:=Copy(szText1,((iDay-1) div 10)*2+1,2);
  pBuffer:=pBuffer+Copy(szText2,((iDay-1) mod 10)*2+1,2);
end
else
begin
  pBuffer:=Copy(szText1,(iDay div 10)*2+1,2);
  pBuffer:=pBuffer+'十';
end;
end;

function FormatLunarDay(iDay:Integer):string;
var
pBuffer:string;
begin
FormatLunarDay(iDay,pBuffer);
Result:=pBuffer;
end;

function
CalcDateDiff(iEndYear,iEndMonth,iEndDay:Integer;iStartYear:Integer;iStartM
onth:Integer;iStartDay:Integer):Integer;
begin

Result:=Trunc(EncodeDate(iEndYear,iEndMonth,iEndDay)-EncodeDate(iStartYear
,iStartMonth,iStartDay));
end;

function CalcDateDiff(EndDate,StartDate:TDateTime):Integer;
begin
Result:=Trunc(EndDate-StartDate);
end;

function GetLunarDate(iYear,iMonth,iDay:Integer;var
iLunarYear,iLunarMonth,iLunarDay:Integer):Integer;
begin

l_CalcLunarDate(iLunarYear,iLunarMonth,iLunarDay,CalcDateDiff(iYear,iMonth
,iDay));
Result:=l_GetLunarHolDay(iYear,iMonth,iDay);
end;

procedure GetLunarDate(InDate:TDateTime;var
iLunarYear,iLunarMonth,iLunarDay:Integer);
begin

l_CalcLunarDate(iLunarYear,iLunarMonth,iLunarDay,CalcDateDiff(InDate,Encod
eDate(START_YEAR,1,1)));
end;

procedure l_CalcLunarDate(var
iYear,iMonth,iDay:Integer;iSpanDays:Longint);
var
tmp:Longint;
begin
//阳历1901年2月19日为阴历1901年正月初一
//阳历1901年1月1日到2月19日共有49天
if iSpanDays<49 then
begin
  iYear:=START_YEAR-1;
  if iSpanDays<19 then
  begin
    iMonth:=11;
    iDay:=11+Word(iSpanDays);
  end
  else
  begin
    iMonth:=12;
    iDay:=Word(iSpanDays)-18;
  end;
  Exit;
end;
//下面从阴历1901年正月初一算起
iSpanDays:=iSpanDays-49;
iYear:=START_YEAR;
iMonth:=1;
iDay:=1;
//计算年
tmp:=LunarYearDays(iYear);
while iSpanDays>=tmp do
begin
  iSpanDays:=iSpanDays-tmp;
  Inc(iYear);
  tmp:=LunarYearDays(iYear);
end;
//计算月
tmp:=LoWord(LunarMonthDays(iYear,iMonth));
while iSpanDays>=tmp do
begin
  iSpanDays:=iSpanDays-tmp;
  if iMonth=GetLeapMonth(iYear) then
  begin
    tmp:=HiWord(LunarMonthDays(iYear,iMonth));
    if iSpanDays<tmp then
      Break;
    iSpanDays:=iSpanDays-tmp;
  end;
  Inc(iMonth);
  tmp:=LoWord(LunarMonthDays(iYear,iMonth));
end;
//计算日
iDay:=iDay+Word(iSpanDays);
end;

function l_GetLunarHolDay(iYear,iMonth,iDay:Integer):Integer;
var
Flag:Byte;
Day:Integer;
begin
Flag:=gLunarHolDay[(iYear-START_YEAR)*12+iMonth-1];
if iDay<15 then
  Day:=15-((Flag shr 4) and $0f)
else
  Day:=(Flag and $0f)+15;
if iDay=Day then
  if iDay>15 then
    Result:=(iMonth-1)*2+2
  else
    Result:=(iMonth-1)*2+1
else
  Result:=0;
end;

function GetLunarHolDay(InDate:TDateTime):string;
var
i:Integer;
iYear,iMonth,iDay:Word;
begin
DecodeDate(InDate,iYear,iMonth,iDay);
i:=l_GetLunarHolDay(iYear,iMonth,iDay);
case i of
  1:Result:='小寒';
  2:Result:='大寒';
  3:Result:='立春';
  4:Result:='雨水';
  5:Result:='惊蛰';
  6:Result:='春分';
  7:Result:='清明';
  8:Result:='谷雨';
  9:Result:='立夏';
  10:Result:='小满';
  11:Result:='芒种';
  12:Result:='夏至';
  13:Result:='小暑';
  14:Result:='大暑';
  15:Result:='立秋';
  16:Result:='处暑';
  17:Result:='白露';
  18:Result:='秋分';
  19:Result:='寒露';
  20:Result:='霜降';
  21:Result:='立冬';
  22:Result:='小雪';
  23:Result:='大雪';
  24:Result:='冬至';
else
  Result:='';
end;
end;

function GetLunarHolDay(iYear,iMonth,iDay:Integer):string;
begin
Result:=GetLunarHolDay(EncodeDate(iYear,iMonth,iDay));
end;

end.  

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