delphi 公历转农历函数

本文主要是介绍delphi 公历转农历函数，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

delphi 公历转农历函数

方法一

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.

方法二

*************
{
這是一個國曆與農曆互相轉的Unit.

其中年份皆用民國年份, 請自行轉換 (西元年-1911 = 民國年).
***************************************************************************
*國農曆對映表之說明 : *
***************************************************************************
* 前二數字 = 閏月月份, 如果為 13 則沒有閏月 *
* 第三至第六數字 = 12 個月之大小月之2進位碼->10進位                      *
   *  例如:                                                                  *
   *       101010101010 = 2730                                               *
   *       1 : 代表大月(30天) 0 : 代表小月(29天) ==> 1月大2月小3月大.....    *
   *  第七位數字為閏月天數                                                   *
   *           0 : 沒有閏月之天數                                            *
   *           1 : 閏月為小月(29天)                                          *
   *           2 : 閏月為大月(30天)                                          *
   *  最後2位數字代表陽曆之1月1日與陰曆之1月1日相差天數                      *
   ***************************************************************************
   這對映表只有民國一年至民國一百年, 如不敷您的使用請按照上述之方式自行增加.

   這個程式沒有判斷您所輸入之年,月,日是否正確, 請自行判斷.

   如果轉換出來之農曆的月份是閏月則傳給您的值是***負數***
   如果農曆要轉換國曆如果是閏月請輸入***負數***

   此版本為FreeWare   Version : 0.1
   您可以自行修改, 但最好可以將修改過之程式Mail一份給我.
   如果您要用於商業用途, 請mail給我告知您的用途及原因.

   作者 : 彭宏傑
   E-Mail : rexpeng@ms1.hinet.net

}
unit Lunar;

interface

uses SysUtils;

//國曆轉農曆(民國年, 月, 日, var 農曆年, 農曆月, 農曆日)
procedure Solar2Lunar(SYear, SMonth, SDay : Integer; Var LYear, LMonth, LDay : Integer);
//農曆轉國曆(農曆年, 農曆月, 農曆日, var 民國年, 月, 日)
procedure Lunar2Solar(LYear, LMonth, LDay : Integer; Var SYear, SMonth, SDay : Integer);
//輸入農曆年份換算六十甲子名稱
function YearName(LYear : integer) : string;
//得知農曆之月份天數
function DaysPerLunarMonth(LYear, LMonth : Integer) : Integer;

implementation
const
SMDay : array[1..12] of integer = (31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31);
c1 : array[1..10] of string[2] = ('甲', '乙', '丙', '丁', '戊', '己', '庚', '辛', '壬', '癸');
c2 : array[1..12] of string[2] = ('子', '丑', '寅', '卯', '辰', '巳', '午', '未', '申', '酉', '戌', '亥');

// Magic String :
LongLife : array[1..111] of string[9] = (
'132637048', '133365036', '053365225', '132900044', '131386034', '022778122', //6
'132395041', '071175231', '131175050', '132635038', '052891127', '131701046', //12
'131748035', '042741223', '130694043', '132391032', '021327122', '131175040', //18
'061623129', '133402047', '133402036', '051769125', '131453044', '130694034', //24
'032158223', '132350041', '073213230', '133221049', '133402038', '063466226', //30
'132901045', '131130035', '042651224', '130605043', '132349032', '023371121', //36
'132709040', '072901128', '131738047', '132901036', '051333226', '131210044', //42
'132651033', '031111223', '131323042', '082714130', '133733048', '131706038', //48
'062794127', '132741045', '131206035', '042734124', '132647043', '131318032', //54
'033878120', '133477039', '071461129', '131386047', '132413036', '051245126', //60
'131197045', '132637033', '043405122', '133365041', '083413130', '132900048', //66
'132922037', '062394227', '132395046', '131179035', '042711124', '132635043', //72
'102855132', '131701050', '131748039', '062804128', '132742047', '132359036', //78
'051199126', '131175045', '131611034', '031866122', '133749040', '081717130', //84
'131452049', '132742037', '052413127', '132350046', '133222035', '043477123', //90
'133402042', '133493031', '021877121', '131386039', '072747128', '130605048', //96
'132349037', '053243125', '132709044', '132890033', '042986122', '132901040', //102
'091373130', '131210049', '132651038', '061303127', '131323046', '132707035', //108
'041941124', '131706042', '132773031');                                       //111

var
  LMDay : array[1..13] of integer;
  InterMonth, InterMonthDays, SLRangeDay : integer;

function IsLeapYear(AYear: Integer): Boolean;
begin
  Result := (AYear mod 4 = 0) and ((AYear mod 100 <> 0) or (AYear mod 400 = 0));
end;

function YearName(LYear : integer) : string;
var
   x, y, ya : integer;
begin
     ya := LYear;
     if ya < 1 then
ya := ya + 1;
if ya < 12 then
ya := ya + 60;
x := (ya + 8 - ((ya + 7) div 10) * 10);
y := (ya - ((ya-1) div 12) * 12);
result := c1[x]+c2[y];
end;

procedure CovertLunarMonth(magicno : integer);
var
i, size, m : integer;
begin
m := magicno;
for i := 12 downto 1 do begin
size := m mod 2;
if size = 0 then
LMDay[i] := 29
else
LMDay[i] := 30;
m := m div 2;
end;
end;

procedure ProcessMagicStr(yy : integer);
var
magicstr : string;
dsize, LunarMonth : integer;
begin
magicstr := LongLife[yy];
InterMonth := StrToInt(Copy(magicstr, 1, 2));
LunarMonth := StrToInt(copy(magicstr, 3, 4));
CovertLunarMonth(LunarMonth);
dsize := StrToInt(Copy(magicstr, 7, 1));
case dsize of
0 : InterMonthDays := 0;
1 : InterMonthDays := 29;
2 : InterMonthDays := 30;
end;
SLRangeDay := StrToInt(Copy(Magicstr, 8, 2));
end;

function DaysPerLunarMonth(LYear, LMonth : Integer) : Integer;
begin
ProcessMagicStr(LYear);
if LMonth < 0 then
Result := InterMonthDays
else
Result := LMDay[LMonth];
end;

procedure Solar2Lunar(SYear, SMonth, SDay : integer; var LYear, LMonth, LDay : integer);
var
i, day : integer;
begin
day := 0;
if isLeapYear(SYear+1911) then
SMDay[2] := 29;
ProcessMagicStr(SYear);
if SMonth = 1 then
day := SDay
else begin
for i := 1 to SMonth-1 do
day := day + SMDay[i];
day := day + SDay;
end;
if day <= SLRangeDay then begin
day := day - SLRangeDay;
processmagicstr(SYear-1);
for i := 12 downto 1 do begin
day := day + LMDay[i];
if day > 0 then
               break;
        end;
        LYear := SYear - 1;
        LMonth := i;
        LDay := day;
     end else begin
        day := day - SLRangeDay;
        for i := 1 to InterMonth-1 do begin
            day := day - LMDay[i];
            if day <= 0 then
break;
end;
if day <= 0 then begin
LYear := SYear;
LMonth := i;
LDay := day + LMDay[i];
end else begin
day := day - LMDay[InterMonth];
if day <= 0 then begin
LYear := SYear;
LMonth := InterMonth;
LDay := day + LMDay[InterMonth];
end else begin
LMDay[InterMonth] := InterMonthDays;
for i := InterMonth to 12 do begin
day := day - LMDay[i];
if day <= 0 then
break;
end;
if i = InterMonth then
LMonth := 0 - InterMonth
else
LMonth := i;
LYear := SYear;
LDay := day + LMDay[i];
end;
end;
end;
end;

procedure Lunar2Solar(LYear, LMonth, LDay : integer; var SYear, SMonth, SDay : integer);
var
i, day : integer;
begin
day := 0;
SYear := LYear;
if isLeapYear(SYear+1911) then
SMDay[2] := 29;
processmagicstr(SYear);
if LMonth < 0 then
day := LMDay[InterMonth];
if LMonth <> 1 then
        for i := 1 to LMonth-1 do
            day := day + LMDay[i];
     day := day + LDay + SLRangeDay;
     if (InterMonth <> 13) and (InterMonth < LMonth) then
day := day + InterMonthDays;
for i := 1 to 12 do begin
day := day - SMDay[i];
if day <= 0 then
break;
end;
if day > 0 then begin
        SYear := SYear + 1;
        if isLeapYear(SYear+1911) then
           SMDay[2] := 29;
        for i := 1 to 12 do begin
            day := day - SMDay[i];
            if day <= 0 then
break;
end;
end;
//i := i - 1;
day := day + SMDay[i];
//if i = 0 then begin
// i := 12;
// SYear := SYear - 1;
// day := day + 31;
//end;// else
//day := day + SMDay[i];
SMonth := i;
SDay := day;
end;

end.