//返回iYear年iMonth月的天数 1年1月 --- 65535年12月
function MonthDays(iYear,iMonth:Word):Word;
//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:Word):Longword;
//返回阴历iLunarYear年的总天数 1901年1月---2050年12月
function LunarYearDays(iLunarYear:Word):Word;
//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:Word):Word;
//把iYear年格式化成天干记年法表示的字符串
procedure FormatLunarYear(iYear:Word;var pBuffer:string);overload;
function FormatLunarYear(iYear:Word):string;overload;
//把iMonth格式化成中文字符串
procedure FormatMonth(iMonth:Word;var pBuffer:string;bLunar:Boolean=True);overload;
function FormatMonth(iMonth:Word;bLunar:Boolean=True):string;overload;
//把iDay格式化成中文字符串
procedure FormatLunarDay(iDay:Word;var pBuffer:string);overload;
function FormatLunarDay(iDay:Word):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:Word;iStartYear:Word=START_YEAR;iStartMonth:Word=
1;iStartDay:Word=1):Longword;overload;
function CalcDateDiff(EndDate,StartDate:TDateTime):Longword;overload;
function MonthDays(iYear,iMonth:Word):Word;
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:Word):Word;
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:Word):Longword;
var
Height,Low:Word;
iBit:Integer;
begin
if iLunarYear
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:Word):Word;
var
Days,i:Word;
tmp:Longword;
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:Word;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:Word):string;
var
pBuffer:string;
begin
FormatLunarYear(iYear,pBuffer);
Result:=pBuffer;
end;
procedure FormatMonth(iMonth:Word;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:Word;bLunar:Boolean):string;
var
pBuffer:string;
begin
FormatMonth(iMonth,pBuffer,bLunar);
Result:=pBuffer;
end;
procedure FormatLunarDay(iDay:Word;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:Word):string;
var
pBuffer:string;
begin
FormatLunarDay(iDay,pBuffer);
Result:=pBuffer;
end;
function CalcDateDiff
(iEndYear,iEndMonth,iEndDay:Word;iStartYear:Word;iStartMonth:Word;iStartDay:Word):Lon
gword;
begin
Result:=Trunc(EncodeDate(iEndYear,iEndMonth,iEndDay)-EncodeDate
(iStartYear,iStartMonth,iStartDay));
end;
function CalcDateDiff(EndDate,StartDate:TDateTime):Longword;
begin
Result:=Trunc(EndDate-StartDate);
end;
procedure l_CalcLunarDate(var iYear,iMonth,iDay:Word;iSpanDays:Longword);
var
tmp:Longword;
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
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:Word):Word;
var
Flag:Byte;
Day:Word;
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,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’;
&nb
sp; 23:Result:=’大 雪’;
24:Result:=’冬 至’;
else
l_CalcLunarDate(iYear,iMonth,iDay,CalcDateDiff(InDate,EncodeDate
(START_YEAR,1,1)));
Result := trim(FormatMonth(iMonth) + FormatLunarDay(iDay));
end;
end;
function GetLunarHolDay(iYear,iMonth,iDay:Word):string;
begin
Result:=GetLunarHolDay(EncodeDate(iYear,iMonth,iDay));
end;
end.