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公历转农历模块(vba)摘录

 yuxinrong 2010-04-04
公历转农历模块(vba)摘录
 

'公历转农历模块
'原创:互联网
'修正:阿勇 2005/1/12

'// 农历数据定义 //
'先以 H2B 函数还原成长度为 18 的字符串,其定义如下:
'前12个字节代表1-12月:1为大月,0为小月;压缩成十六进制(1-3位)
'第13位为闰月的情况,1为大月30天,0为小月29天;(4位)
'第14位为闰月的月份,如果不是闰月为0,否则给出月份(5位)
'最后4位为当年农历新年的公历日期,如0131代表1月31日;当作数值转十六进制(6-7位)

'农历常量(1899~2100,共202年)
Private Const ylData = "AB500D2,4BD0883," _
        & "4AE00DB,A5700D0,54D0581,D2600D8,D9500CC,655147D,56A00D5,9AD00CA,55D027A,4AE00D2," _
        & "A5B0682,A4D00DA,D2500CE,D25157E,B5500D6,56A00CC,ADA027B,95B00D3,49717C9,49B00DC," _
        & "A4B00D0,B4B0580,6A500D8,6D400CD,AB5147C,2B600D5,95700CA,52F027B,49700D2,6560682," _
        & "D4A00D9,EA500CE,6A9157E,5AD00D6,2B600CC,86E137C,92E00D3,C8D1783,C9500DB,D4A00D0," _
        & "D8A167F,B5500D7,56A00CD,A5B147D,25D00D5,92D00CA,D2B027A,A9500D2,B550781,6CA00D9," _
        & "B5500CE,535157F,4DA00D6,A5B00CB,457037C,52B00D4,A9A0883,E9500DA,6AA00D0,AEA0680," _
        & "AB500D7,4B600CD,AAE047D,A5700D5,52600CA,F260379,D9500D1,5B50782,56A00D9,96D00CE," _
        & "4DD057F,4AD00D7,A4D00CB,D4D047B,D2500D3,D550883,B5400DA,B6A00CF,95A1680,95B00D8," _
        & "49B00CD,A97047D,A4B00D5,B270ACA,6A500DC,6D400D1,AF40681,AB600D9,93700CE,4AF057F," _
        & "49700D7,64B00CC,74A037B,EA500D2,6B50883,5AC00DB,AB600CF,96D0580,92E00D8,C9600CD," _
        & "D95047C,D4A00D4,DA500C9,755027A,56A00D1,ABB0781,25D00DA,92D00CF,CAB057E,A9500D6," _
        & "B4A00CB,BAA047B,B5500D2,55D0983,4BA00DB,A5B00D0,5171680,52B00D8,A9300CD,795047D," _
        & "6AA00D4,AD500C9,5B5027A,4B600D2,96E0681,A4E00D9,D2600CE,EA6057E,D5300D5,5AA00CB," _
        & "76A037B,96D00D3,4AB0B83,4AD00DB,A4D00D0,D0B1680,D2500D7,D5200CC,DD4057C,B5A00D4," _
        & "56D00C9,55B027A,49B00D2,A570782,A4B00D9,AA500CE,B25157E,6D200D6,ADA00CA,4B6137B," _
        & "93700D3,49F08C9,49700DB,64B00D0,68A1680,EA500D7,6AA00CC,A6C147C,AAE00D4,92E00CA," _
        & "D2E0379,C9600D1,D550781,D4A00D9,DA400CD,5D5057E,56A00D6,A6C00CB,55D047B,52D00D3," _
        & "A9B0883,A9500DB,B4A00CF,B6A067F,AD500D7,55A00CD,ABA047C,A5A00D4,52B00CA,B27037A," _
        & "69300D1,7330781,6AA00D9,AD500CE,4B5157E,4B600D6,A5700CB,54E047C,D1600D2,E960882," _
        & "D5200DA,DAA00CF,6AA167F,56D00D7,4AE00CD,A9D047D,A2D00D4,D1500C9,F250279,D5200D1"

Private Const ylMd0 = "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 "

Private Const ylMn0 = "正二三四五六七八九十冬腊"
Private Const ylTianGan0 = "甲乙丙丁戊已庚辛壬癸"
Private Const ylDiZhi0 = "子丑寅卯辰巳午未申酉戌亥"
Private Const ylShu0 = "鼠牛虎兔龙蛇马羊猴鸡狗猪"

'公历日期转农历
Function GetYLDate(ByVal strDate As String) As String

On Error GoTo aErr

    If Not IsDate(strDate) Then Exit Function
   
    Dim setDate As Date, tYear As Integer, tMonth As Integer, tDay As Integer
    setDate = CDate(strDate)
    tYear = Year(setDate): tMonth = Month(setDate): tDay = Day(setDate)
   
    '如果不是有效有日期,退出
    If tYear > 2100 Or tYear < 1900 Then Exit Function
   
    Dim daList() As String * 18, conDate As Date, thisMonths As String
    Dim AddYear As Integer, AddMonth As Integer, AddDay As Integer, getDay As Integer
    Dim YLyear As String, YLShuXing As String
    Dim dd0 As String, mm0 As String, ganzhi(0 To 59) As String * 2
    Dim RunYue As Boolean, RunYue1 As Integer, mDays As Integer, i As Integer
   
    '加载2年内的农历数据
    ReDim daList(tYear - 1 To tYear)
    daList(tYear - 1) = H2B(Mid(ylData, (tYear - 1900) * 8 + 1, 7))
    daList(tYear) = H2B(Mid(ylData, (tYear - 1900 + 1) * 8 + 1, 7))
   
    AddYear = tYear

initYL:

    AddMonth = CInt(Mid(daList(AddYear), 15, 2))
    AddDay = CInt(Mid(daList(AddYear), 17, 2))
    conDate = DateSerial(AddYear, AddMonth, AddDay)     '农历新年日期
   
    getDay = DateDiff("d", conDate, setDate) + 1        '相差天数
    If getDay < 1 Then AddYear = AddYear - 1: GoTo initYL
   
    thisMonths = Left(daList(AddYear), 14)
    RunYue1 = Val("&H" & Right(thisMonths, 1))           '闰月月份
    If RunYue1 > 0 Then                                  '有闰月
        thisMonths = Left(thisMonths, RunYue1) & Mid(thisMonths, 13, 1) & Mid(thisMonths, RunYue1 + 1)
    End If
    thisMonths = Left(thisMonths, 13)
   
    For i = 1 To 13                                      '计算天数
        mDays = 29 + CInt(Mid(thisMonths, i, 1))
        If getDay > mDays Then
            getDay = getDay - mDays
        Else
            If RunYue1 > 0 Then
                If i = RunYue1 + 1 Then RunYue = True
                If i > RunYue1 Then i = i - 1
            End If
           
            AddMonth = i
            AddDay = getDay
            Exit For
        End If
    Next
   
    dd0 = Mid(ylMd0, (AddDay - 1) * 2 + 1, 2)
    mm0 = Mid(ylMn0, AddMonth, 1) + "月"
   
    For i = 0 To 59
        ganzhi(i) = Mid(ylTianGan0, (i Mod 10) + 1, 1) + Mid(ylDiZhi0, (i Mod 12) + 1, 1)
    Next i

    YLyear = ganzhi((AddYear - 4) Mod 60)
    YLShuXing = Mid(ylShu0, ((AddYear - 4) Mod 12) + 1, 1)
    If RunYue Then mm0 = "闰" & mm0
   
    GetYLDate = "农历" & YLyear & "(" & YLShuXing & ")年" & mm0 & dd0

aErr:
   
End Function


'农历转公历日期
'secondMonth 为真,则天示当 tMonth 是闰月时,取第二个月
Function GetDate(ByVal tYear As Integer, tMonth As Integer, tDay As Integer, Optional secondMonth As Boolean = False) As String

On Error GoTo aErr

    If tYear > 2100 Or tYear < 1899 Or tMonth > 12 Or tMonth < 1 Or tDay > 30 Or tDay < 1 Then Exit Function
   
    Dim thisMonths As String, ylNewYear As Date, toMonth As Integer
    Dim mDays As Integer, RunYue1 As Integer, i As Integer
    thisMonths = H2B(Mid(ylData, (tYear - 1899) * 8 + 1, 7))
   
    If tDay > 29 + CInt(Mid(thisMonths, tMonth, 1)) Then Exit Function
   
    ylNewYear = DateSerial(tYear, CInt(Mid(thisMonths, 15, 2)), CInt(Mid(thisMonths, 17, 2)))     '农历新年日期
   
    thisMonths = Left(thisMonths, 14)
    RunYue1 = Val("&H" & Right(thisMonths, 1))           '闰月月份
   
    toMonth = tMonth - 1
    If RunYue1 > 0 Then                                  '有闰月
        thisMonths = Left(thisMonths, RunYue1) & Mid(thisMonths, 13, 1) & Mid(thisMonths, RunYue1 + 1)
        If tMonth > RunYue1 Or (secondMonth And tMonth = RunYue1) Then toMonth = tMonth
    End If
    thisMonths = Left(thisMonths, 13)
       
    mDays = 0
    For i = 1 To toMonth
        mDays = mDays + 29 + CInt(Mid(thisMonths, i, 1))
    Next
    mDays = mDays + tDay
   
    GetDate = ylNewYear + mDays - 1

aErr:
   
End Function

'将压缩的阴历字符还原
Private Function H2B(ByVal strHex As String) As String
    Dim i As Integer, i1 As Integer, tmpV As String
    Const hStr = "0123456789ABCDEF"
    Const bStr = "0000000100100011010001010110011110001001101010111100110111101111"
   
    tmpV = UCase(Left(strHex, 3))
   
    '十六进制转二进制
    For i = 1 To Len(tmpV)
        i1 = InStr(hStr, Mid(tmpV, i, 1))
        H2B = H2B & Mid(bStr, (i1 - 1) * 4 + 1, 4)
    Next
   
    H2B = H2B & Mid(strHex, 4, 2)
   
    '十六进制转十进制
    H2B = H2B & "0" & CStr(Val("&H" & Right(strHex, 2)))
End Function

--------------------------;例:

=GetYLDate("1983-03-22")----》农历癸亥(猪)年二月初八

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