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unit DateCn; interface uses Windows, SysUtils, Controls; const //农历月份数据,每年4字节,从1901年开始,共150年 //数据来源:UCDOS 6.0 UCT.COM //分析整理:Copyright (c) 1996-1998, Randolph //数据解析: //如果第一字节的bit7为1,则该年1月1日位于农历12月,否则位于11月 //第一字节去除bit7为该年1月1日的农历日期 // 第二字节 第三字节 //bit: 7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0 //农历月份:16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 //农历月份指的是从该年1月1日的农历月份算起的顺序号 //农历月份对应的bit为1则该月为30日,否则为29日 //第四字节为闰月月份 CnData: array[0..599] of Byte = ( $0b,$52,$ba,$00,$16,$a9,$5d,$00,$83,$a9,$37,$05,$0e,$74,$9b,$00, $1a,$b6,$55,$00,$87,$b5,$55,$04,$11,$55,$aa,$00,$1c,$a6,$b5,$00, $8a,$a5,$75,$02,$14,$52,$ba,$00,$81,$52,$6e,$06,$0d,$e9,$37,$00, $18,$74,$97,$00,$86,$ea,$96,$05,$10,$6d,$55,$00,$1a,$35,$aa,$00, $88,$4b,$6a,$02,$13,$a5,$6d,$00,$1e,$d2,$6e,$07,$0b,$d2,$5e,$00, $17,$e9,$2e,$00,$84,$d9,$2d,$05,$0f,$da,$95,$00,$19,$5b,$52,$00, $87,$56,$d4,$04,$11,$4a,$da,$00,$1c,$a5,$5d,$00,$89,$a4,$bd,$02, $15,$d2,$5d,$00,$82,$b2,$5b,$06,$0d,$b5,$2b,$00,$18,$ba,$95,$00, $86,$b6,$a5,$05,$10,$56,$b4,$00,$1a,$4a,$da,$00,$87,$49,$ba,$03, $13,$a4,$bb,$00,$1e,$b2,$5b,$07,$0b,$72,$57,$00,$16,$75,$2b,$00, $84,$6d,$2a,$06,$0f,$ad,$55,$00,$19,$55,$aa,$00,$86,$55,$6c,$04, $12,$c9,$76,$00,$1c,$64,$b7,$00,$8a,$e4,$ae,$02,$15,$ea,$56,$00, $83,$da,$55,$07,$0d,$5b,$2a,$00,$18,$ad,$55,$00,$85,$aa,$d5,$05, $10,$53,$6a,$00,$1b,$a9,$6d,$00,$88,$a9,$5d,$03,$13,$d4,$ae,$00, $81,$d4,$ab,$08,$0c,$ba,$55,$00,$16,$5a,$aa,$00,$83,$56,$aa,$06, $0f,$aa,$d5,$00,$19,$52,$da,$00,$86,$52,$ba,$04,$11,$a9,$5d,$00, $1d,$d4,$9b,$00,$8a,$74,$9b,$03,$15,$b6,$55,$00,$82,$ad,$55,$07, $0d,$55,$aa,$00,$18,$a5,$b5,$00,$85,$a5,$75,$05,$0f,$52,$b6,$00, $1b,$69,$37,$00,$89,$e9,$37,$04,$13,$74,$97,$00,$81,$ea,$96,$08, $0c,$6d,$52,$00,$16,$2d,$aa,$00,$83,$4b,$6a,$06,$0e,$a5,$6d,$00, $1a,$d2,$6e,$00,$87,$d2,$5e,$04,$12,$e9,$2e,$00,$1d,$ec,$96,$0a, $0b,$da,$95,$00,$15,$5b,$52,$00,$82,$56,$d2,$06,$0c,$2a,$da,$00, $18,$a4,$dd,$00,$85,$a4,$bd,$05,$10,$d2,$5d,$00,$1b,$d9,$2d,$00, $89,$b5,$2b,$03,$14,$ba,$95,$00,$81,$b5,$95,$08,$0b,$56,$b2,$00, $16,$2a,$da,$00,$83,$49,$b6,$05,$0e,$64,$bb,$00,$19,$b2,$5b,$00, $87,$6a,$57,$04,$12,$75,$2b,$00,$1d,$b6,$95,$00,$8a,$ad,$55,$02, $15,$55,$aa,$00,$82,$55,$6c,$07,$0d,$c9,$76,$00,$17,$64,$b7,$00, $86,$e4,$ae,$05,$11,$ea,$56,$00,$1b,$6d,$2a,$00,$88,$5a,$aa,$04, $14,$ad,$55,$00,$81,$aa,$d5,$09,$0b,$52,$ea,$00,$16,$a9,$6d,$00, $84,$a9,$5d,$06,$0f,$d4,$ae,$00,$1a,$ea,$4d,$00,$87,$ba,$55,$04, $12,$5a,$aa,$00,$1d,$ab,$55,$00,$8a,$a6,$d5,$02,$14,$52,$da,$00, $82,$52,$ba,$06,$0d,$a9,$3b,$00,$18,$b4,$9b,$00,$85,$74,$9b,$05, $11,$b5,$4d,$00,$1c,$d6,$a9,$00,$88,$35,$aa,$03,$13,$a5,$b5,$00, $81,$a5,$75,$0b,$0b,$52,$b6,$00,$16,$69,$37,$00,$84,$e9,$2f,$06, $10,$f4,$97,$00,$1a,$75,$4b,$00,$87,$6d,$52,$05,$11,$2d,$69,$00, $1d,$95,$b5,$00,$8a,$a5,$6d,$02,$15,$d2,$6e,$00,$82,$d2,$5e,$07, $0e,$e9,$2e,$00,$19,$ea,$96,$00,$86,$da,$95,$05,$10,$5b,$4a,$00, $1c,$ab,$69,$00,$88,$2a,$d8,$03); function CnMonthOfDate(Date: TDate): String;//指定日期的农历月 function CnDayOfDate(Date: TDate): String;//指定日期的农历日 function CnDateOfDateStr(Date: TDate): String;//指定日期的农历日期 implementation //日期是该年的第几天,1月1日为第一天
function DaysNumberOfDate(Date: TDate): Integer;
var DaysNumber: Integer; I: Integer; yyyy, mm, dd: Word;
begin DecodeDate(Date, yyyy, mm, dd); DaysNumber := 0; for I := 1 to mm - 1 do Inc(DaysNumber, MonthDays[IsLeapYear(yyyy), I]); Inc(DaysNumber, dd); Result := DaysNumber;
end; //日期的农历日期,返回农历格式:月份*100 + 日,负数为闰月
//超出范围则返回0
function CnDateOfDate(Date: TDate): Integer;
var CnMonth, CnMonthDays: array[0..15] of Integer; CnBeginDay, LeapMonth: Integer; yyyy, mm, dd: Word; Bytes: array[0..3] of Byte; I: Integer; CnMonthData: Word; DaysCount, CnDaysCount, ResultMonth, ResultDay: Integer;
begin DecodeDate(Date, yyyy, mm, dd); if (yyyy < 1901) or (yyyy > 2050) then begin Result := 0; Exit; end; Bytes[0] := CnData[(yyyy - 1901) * 4]; Bytes[1] := CnData[(yyyy - 1901) * 4 + 1]; Bytes[2] := CnData[(yyyy - 1901) * 4 + 2]; Bytes[3] := CnData[(yyyy - 1901) * 4 + 3]; if (Bytes[0] and $80) <> 0 then CnMonth[0] := 12 else CnMonth[0] := 11; CnBeginDay := (Bytes[0] and $7f); CnMonthData := Bytes[1]; CnMonthData := CnMonthData shl 8; CnMonthData := CnMonthData or Bytes[2]; LeapMonth := Bytes[3]; for I := 15 downto 0 do begin CnMonthDays[15 - I] := 29; if ((1 shl I) and CnMonthData) <> 0 then Inc(CnMonthDays[15 - I]); if CnMonth[15 - I] = LeapMonth then CnMonth[15 - I + 1] := - LeapMonth else begin if CnMonth[15 - I] < 0 then //上月为闰月
CnMonth[15 - I + 1] := - CnMonth[15 - I] + 1
else CnMonth[15 - I + 1] := CnMonth[15 - I] + 1;
if CnMonth[15 - I + 1] > 12 then CnMonth[15 - I + 1] := 1; end; end; DaysCount := DaysNumberOfDate(Date) - 1; if DaysCount <= (CnMonthDays[0] - CnBeginDay) then
begin
if (yyyy > 1901) and (CnDateOfDate(EncodeDate(yyyy - 1, 12, 31)) < 0) then
ResultMonth := - CnMonth[0]
else ResultMonth := CnMonth[0];
ResultDay := CnBeginDay + DaysCount;
end
else
begin
CnDaysCount := CnMonthDays[0] - CnBeginDay;
I := 1;
while (CnDaysCount < DaysCount) and
(CnDaysCount + CnMonthDays[I] < DaysCount) do
begin
Inc(CnDaysCount, CnMonthDays[I]);
Inc(I);
end;
ResultMonth := CnMonth[I];
ResultDay := DaysCount - CnDaysCount;
end;
if ResultMonth > 0 then Result := ResultMonth * 100 + ResultDay else Result := ResultMonth * 100 - ResultDay
end; function CnMonthOfDate(Date: TDate): String;
const CnMonthStr: array[1..12] of String = ( '一', '二', '三', '四', '五', '六', '七', '八', '九', '十', '冬', '蜡');
var Month: Integer;
begin Month := CnDateOfDate(Date) div 100; if Month < 0 then Result := '闰' + CnMonthStr[-Month]
else Result := CnMonthStr[Month] + '月';
end; function CnDayOfDate(Date: TDate): String;
const
CnDayStr: array[1..30] of String = (
'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');
var
Day: Integer;
begin
Day := Abs(CnDateOfDate(Date)) mod 100;
Result := CnDayStr[Day];
end; function CnDateOfDateStr(Date: TDate): String;
begin
Result := CnMonthOfDate(Date) + CnDayOfDate(Date);
end; end.
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