FormatRemoteUrl函數之asp實現格式化成當前網站完整的URL-將相對位址轉換為絕對位址的代碼

'================================================
'函數名：FormatRemoteUrl
'作 用：格式化成當前網站完整的URL-將相對位址轉換為絕對位址
'參 數： url ----Url字串
'參 數： CurrentUrl ----當然網站URL
'傳回值：格式化取後的Url
'================================================
Public Function FormatRemoteUrl(ByVal URL,ByVal CurrentUrl)
Dim strUrl
If Len(URL) < 2 Or Len(URL) > 255 Or Len(CurrentUrl) < 2 Then
FormatRemoteUrl = vbNullString
Exit Function
End If
CurrentUrl = Trim(Replace(Replace(Replace(Replace(Replace(CurrentUrl, "'", vbNullString), """", vbNullString), vbNewLine, vbNullString), "\", "/"), "|", vbNullString))
URL = Trim(Replace(Replace(Replace(Replace(Replace(URL, "'", vbNullString), """", vbNullString), vbNewLine, vbNullString), "\", "/"), "|", vbNullString))
If InStr(9, CurrentUrl, "/") = 0 Then
strUrl = CurrentUrl
Else
strUrl = Left(CurrentUrl, InStr(9, CurrentUrl, "/") - 1)
End If

If strUrl = vbNullString Then strUrl = CurrentUrl
Select Case Left(LCase(URL), 6)
Case "http:/", "https:", "ftp://", "rtsp:/", "mms://"
FormatRemoteUrl = URL
Exit Function
End Select

If Left(URL, 1) = "/" Then
FormatRemoteUrl = strUrl & URL
Exit Function
End If

If Left(URL, 3) = "../" Then
Dim ArrayUrl
Dim ArrayCurrentUrl
Dim ArrayTemp()
Dim strTemp
Dim i, n
Dim c, l
n = 0
ArrayCurrentUrl = Split(CurrentUrl, "/")
ArrayUrl = Split(URL, "../")
c = UBound(ArrayCurrentUrl)
l = UBound(ArrayUrl) + 1

If c > l + 2 Then
For i = 0 To c - l
ReDim Preserve ArrayTemp(n)
ArrayTemp(n) = ArrayCurrentUrl(i)
n = n + 1
Next
strTemp = Join(ArrayTemp, "/")
Else
strTemp = strUrl
End If
URL = Replace(URL, "../", vbNullString)
FormatRemoteUrl = strTemp & "/" & URL
Exit Function
End If
strUrl = Left(CurrentUrl, InStrRev(CurrentUrl, "/"))
FormatRemoteUrl = strUrl & Replace(URL, "./", vbNullString)
Exit Function
End Function