ASP网址的编码和解码- Public Function [URLEncode](ByVal Str,ByVal OldCode,ByVal NewCode)
- Dim TempStr
- TempStr = ""
- If NewCode <> OldCode Then
- Session.CodePage = NewCode
- TempStr = Server.UrlEncode(Str)
- Session.CodePage = OldCode
- Else
- TempStr = Server.UrlEncode(Str)
- End If
- [URLEncode] = TempStr
- End Function
- Public Function [URLDecode](ByVal Str)
- Dim Start,Final,Length,Char,I,BUtf8,Pass
- Dim LeftStr,RightStr,FinalStr
- Dim B0,B1,Bx,BLength,Position,U,Utf8
- B0 = Array(192,224,240,248,252,254)
- Str = Replace(Str,"+"," ")
- Pass = 0
- Utf8 = -1
- Length = Len(Str) : Start = InStr(Str,"%") : Final = InStrRev(Str,"%")
- If Start = 0 Or Length < 3 Then [URLDecode] = Str : Exit Function
- LeftStr = Left(Str,Start - 1) : RightStr = Right(Str,Length - 2 - Final)
- For I = Start To Final
- Char = Mid(Str,I,1)
- If Char = "%" Then
- Bx = URLDecode_Hex(Mid(Str,I + 1,2))
- If Bx > 31 And Bx < 128 Then
- I = I + 2
- FinalStr = FinalStr & ChrW(Bx)
- ElseIf Bx > 127 Then
- I = I + 2
- If Utf8 < 0 Then
- BUtf8 = 1 : BLength = -1 : B1 = Bx
- For Position = 4 To 0 Step -1
- If B1 >= B0(Position) And B1 < B0(Position + 1) Then
- BLength = Position
- Exit For
- End If
- Next
- If BLength > -1 Then
- For Position = 0 To BLength
- B1 = URLDecode_Hex(Mid(Str,I + Position * 3 + 2,2))
- If B1 < 128 Or B1 > 191 Then BUtf8 = 0 : Exit For
- Next
- Else
- BUtf8 = 0
- End If
- If BUtf8 = 1 And BLength = 0 Then BUtf8 = -2
- If BUtf8 > -1 And Utf8 = -2 Then I = Start - 1 : FinalStr = "" : Pass = 1
- Utf8 = BUtf8
- End If
- If Pass = 0 Then
- If Utf8 = 1 Then
- B1 = Bx : U = 0 : BLength = -1
- For Position = 4 To 0 Step -1
- If B1 >= B0(Position) And B1 < B0(Position + 1) Then
- BLength = Position
- B1 = (B1 xOr B0(Position)) * 64 ^ (Position + 1)
- Exit For
- End If
- Next
- If BLength > -1 Then
- For Position = 0 To BLength
- Bx = URLDecode_Hex(Mid(Str,I + 2,2)) : I = I + 3
- If Bx < 128 Or Bx > 191 Then U = 0 : Exit For
- U = U + (Bx And 63) * 64 ^ (BLength - Position)
- Next
- If U > 0 Then FinalStr = FinalStr & ChrW(B1 + U)
- End If
- Else
- B1 = Bx * &H100 : U = 0
- Bx = URLDecode_Hex(Mid(Str,I + 2,2))
- If Bx > 0 Then
- U = B1 + Bx
- I = I + 3
- Else
- If Left(Str,1) = "%" Then
- U = B1 + Asc(Mid(Str,I + 3,1))
- I = I + 2
- Else
- U = B1 + Asc(Mid(Str,I + 1,1))
- I = I + 1
- End If
- End If
- FinalStr = FinalStr & Chr(U)
- End If
- Else
- Pass = 0
- End If
- End If
- Else
- FinalStr = FinalStr & Char
- End If
- Next
- [URLDecode] = LeftStr & FinalStr & RightStr
- End Function
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