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URLDecode Function

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Submitted on: 1/31/2015 7:25:00 PM
By: Markus Diersbock (from psc cd)  
Level: Intermediate
User Rating: By 6 Users
Compatibility: VB 5.0, VB 6.0, ASP (Active Server Pages)
Views: 2563
 
     Decodes a URLEncoded string
 
code:
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'**************************************
' Name: URLDecode Function
' Description:Decodes a URLEncoded string
' By: Markus Diersbock (from psc cd)
'
' Inputs:sEncodedURL - Encoded String to Decode
'
' Returns:Decoded String
'**************************************

Public Function URLDecode(sEncodedURL As String) As String
 On Error GoTo Catch
 
 Dim iLoop As Integer
 Dim sRtn As String
 Dim sTmp As String
 
 If Len(sEncodedURL) > 0 Then
 ' Loop through each char
 For iLoop = 1 To Len(sEncodedURL)
 sTmp = Mid(sEncodedURL, iLoop, 1)
 sTmp = Replace(sTmp, "+", " ")
 ' If char is % then get next two chars
 ' and convert from HEX to decimal
 If sTmp = "%" and LEN(sEncodedURL) + 1 > iLoop + 2 Then
 sTmp = Mid(sEncodedURL, iLoop + 1, 2)
 sTmp = Chr(CDec("&H" & sTmp))
 ' Increment loop by 2
 iLoop = iLoop + 2
 End If
 sRtn = sRtn & sTmp
 Next iLoop
 URLDecode = sRtn
 End If
Finally:
 Exit Function
Catch:
 URLDecode = ""
 Resume Finally
End Function


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