Please help with pattern matching

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Yeah I know its a totally n00b question, so I appreciate someone pointing me in the right direction.

I am attempting to write a pattern matching script to set variable.

Pattern is one of a URL. I am trying to basically say:
"If file is in this folder tree 3 folders deep set Dim to x"

So here is what I have

VB

Dim strBanner
If Request.ServerVariables("URL") like "*/vendors/[*]/[*]/
index.aspx*"  Then
    strBanner = Whatever


End If

I was looking for a way to catch anything in between "/ /"

Thanks for any help!

Posted 14-Mar-11 3:34am

anthem127

Updated 14-Mar-11 3:37am

Manfred Rudolf Bihy

v2

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Manfred Rudolf Bihy 14-Mar-11 9:38am

Edit: Fixed pre tags.

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OriginalGriff · Accepted Answer · 2011-03-14T03:43:00

You are looking for a regular expression. This is what Expresso came up with:

VB

'  Imports System.Text.RegularExpressions

'  Regular expression built for Visual Basic on: Mon, Mar 14, 2011, 01:42:46 PM
'  Using Expresso Version: 3.0.3634, http://www.ultrapico.com
'
'  A description of the regular expression:
'
'  /vendors/
'      /vendors/
'  Any character that is NOT in this class: [/], any number of repetitions
'  /
'  Any character that is NOT in this class: [/], any number of repetitions
'  /index.aspx
'      /index
'      Any character
'      aspx
'
'

Public Dim regex As Regex = New Regex( _
      "/vendors/[^/]*/[^/]*/index.aspx", _
    RegexOptions.Singleline _
    Or RegexOptions.CultureInvariant _
    Or RegexOptions.IgnorePatternWhitespace _
    Or RegexOptions.Compiled _
    )


' This is the replacement string
Public Dim regexReplace As String = _
      "<Hello>"


'' Replace the matched text in the InputText using the replacement pattern
' Dim result As String = regex.Replace(InputText,regexReplace)

'' Split the InputText wherever the regex matches
' Dim results As String() = regex.Split(InputText)

'' Capture the first Match, if any, in the InputText
' Dim m As Match= regex.Match(InputText)

'' Capture all Matches in the InputText
' Dim ms As MatchCollection = regex.Matches(InputText)

'' Test to see if there is a match in the InputText
' Dim IsMatch As Boolean = regex.IsMatch(InputText)

'' Get the names of all the named and numbered capture groups
' Dim GroupNames As String() = regex.GetGroupNames()

'' Get the numbers of all the named and numbered capture groups
' Dim GroupNumbers As Integer() = regex.GetGroupNumbers()

If you are going to use them in the future, get a copy: it's free, and it helps explain, design, and check Regexes. I wish I'd written it!