Does VBA have any built in URL decoding?

Question

I just need to decode a URL, for example, replace %2E with . I can hack out a method if one isn't build in, but my assumption is that there must be a URL decoding tool already existing.

Answer 1

EncodeURL and DecodeURL function using htmlfile object(Late binding)

I got this source from this site: http://cocosoft.kr/442

Function ENCODEURL(varText As Variant, Optional blnEncode = True)
    Static objHtmlfile As Object
    If objHtmlfile Is Nothing Then
        Set objHtmlfile = CreateObject("htmlfile")
        With objHtmlfile.parentWindow
            .execScript "function encode(s) {return encodeURIComponent(s)}", "jscript"
        End With
    End If
    If blnEncode Then
        ENCODEURL = objHtmlfile.parentWindow.encode(varText)
    End If
End Function

Function DECODEURL(varText As Variant, Optional blnEncode = True)
    Static objHtmlfile As Object
    If objHtmlfile Is Nothing Then
        Set objHtmlfile = CreateObject("htmlfile")
        With objHtmlfile.parentWindow
            .execScript "function decode(s) {return decodeURIComponent(s)}", "jscript"
        End With
    End If
    If blnEncode Then
        DECODEURL = objHtmlfile.parentWindow.decode(varText)
    End If
End Function

For example,

str = ENCODEURL("/?&=") 'returns "%2F%3F%26%3D"
str = DECODEURL("%2F%3F%26%3D") 'returns "/?&="

Answer 2

No.

But here's one: URL Encoder and Decoder for VB

Or something along the lines of (possibly not complete):

Public Function URLDecode(ByVal strEncodedURL As String) As String
   Dim str As String
   str = strEncodedURL 
   If Len(str) > 0 Then
      str = Replace(str, "&amp", " & ")
      str = Replace(str, "&#03", Chr(39))
      str = Replace(str, "&quo", Chr(34))
      str = Replace(str, "+", " ")
      str = Replace(str, "%2A", "*")
      str = Replace(str, "%40", "@")
      str = Replace(str, "%2D", "-")
      str = Replace(str, "%5F", "_")
      str = Replace(str, "%2B", "+")
      str = Replace(str, "%2E", ".")
      str = Replace(str, "%2F", "/")

      URLDecode = str
  End If

End Function

Also, take a look at How can I URL encode a string in Excel VBA?

Answer 3

Here's a snippet I wrote years ago

-markus

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
    URLDecode = sRtn
End If

Finally:
    Exit Function
Catch:
    URLDecode = ""
    Resume Finally
End Function