regexexpression library for VBA

cregXLib.cls

'gistThat@mcpher.com :do not modify this line - see ramblings.mcpher.com for details: updated on 28/02/2013 09:55:55 : from manifest:3414394 gist https://gist.github.com/brucemcpherson/3414836/raw/cregXLib.cls
Option Explicit
' v2.02
'for more about this
' http://ramblings.mcpher.com/Home/excelquirks/classeslink/data-manipulation-classes
'to contact me
' http://groups.google.com/group/excel-ramblings
'reuse of code
' http://ramblings.mcpher.com/Home/excelquirks/codeuse
' for building up a library of useful regex expressions
Private pName As String
Private pRegex As RegExp
Public Property Get Pattern() As String
    Pattern = pRegex.Pattern
End Property
Public Property Let Pattern(p As String)
    pRegex.Pattern = p
End Property
Public Property Get name() As String
    name = pName
End Property
Public Property Let name(p As String)
   pName = p
End Property
Public Property Get ignorecase() As Boolean
    ignorecase = pRegex.ignorecase
End Property
Public Property Let ignorecase(p As Boolean)
     pRegex.ignorecase = p
End Property
Public Property Get rGlobal() As Boolean
    rGlobal = pRegex.Global
End Property
Public Property Let rGlobal(p As Boolean)
   pRegex.Global = p
End Property

Public Sub init(sname As String, _
            Optional spat As String = "", _
            Optional bIgnoreSpaces As Boolean = True, _
            Optional bIgnoreCase As Boolean = True, _
            Optional bGlobal As Boolean = True)
    
    Dim s As String
    s = spat
    If bIgnoreSpaces Then
        s = Replace(s, " ", "")
    End If
    Set pRegex = New RegExp
    With pRegex
        .Pattern = s
        .ignorecase = bIgnoreCase
        .Global = bGlobal
    End With
    pName = sname

End Sub
Public Function getString(sFrom As String) As String
    Dim mc As matchcollection, am As Match, rs As String
    Set mc = pRegex.execute(sFrom)
    rs = ""
    For Each am In mc
        rs = rs & am.value
    Next am
    getString = rs
End Function
Public Function getGroup(sFrom As String, groupNumber As Long) As String
    Dim mc As matchcollection, am As Match, bm As SubMatches, rs As String
    Set mc = pRegex.execute(sFrom)
    rs = ""
    
    
    If mc.count > 1 And mc.count >= groupNumber Then
        rs = mc.item(groupNumber - 1).value
    ElseIf mc.count = 1 Then
        If mc.item(0).SubMatches.count >= groupNumber Then
    ' dont really understand this yet
            rs = mc.item(0).SubMatches(groupNumber - 1)
        End If
    End If
    
    getGroup = rs
End Function
Function getReplace(sFrom As String, sTo As String) As String
    getReplace = pRegex.Replace(sFrom, sTo)

End Function
Function getTest(sFrom As String) As Boolean
    getTest = pRegex.Test(sFrom)

End Function

regXLib.vba

'gistThat@mcpher.com :do not modify this line - see ramblings.mcpher.com for details: updated on 28/02/2013 09:55:55 : from manifest:3414394 gist https://gist.github.com/brucemcpherson/3414836/raw/regXLib.vba
Option Explicit
' v2.02
'for more about this
' http://ramblings.mcpher.com/Home/excelquirks/classeslink/data-manipulation-classes
'to contact me
' http://groups.google.com/group/excel-ramblings
'reuse of code
' http://ramblings.mcpher.com/Home/excelquirks/codeuse
Public Function rxString(sname As String, s As String, Optional ignorecase As Boolean = True) As String
    Dim rx As cregXLib
    ' create a new regx
    Set rx = rxMakeRxLib(sname)
    rx.ignorecase = ignorecase
    ' extract the string that matches the requested pattern
    rxString = rx.getString(s)

End Function
Public Function rxGroup(sname As String, s As String, group As Long, Optional ignorecase As Boolean = True) As String
    Dim rx As cregXLib
    ' create a new regx
    Set rx = rxMakeRxLib(sname)
    rx.ignorecase = ignorecase
    ' extract the string that matches the requested pattern
    rxGroup = rx.getGroup(s, group)

End Function
Public Function rxTest(sname As String, s As String, Optional ignorecase As Boolean = True) As Boolean
    Dim rx As cregXLib
    ' create a new regx
    Set rx = rxMakeRxLib(sname)
    rx.ignorecase = ignorecase
    ' extract the string that matches the requested pattern
    rxTest = rx.getTest(s)

End Function
Public Function rxReplace(sname As String, sFrom As String, sTo As String, Optional ignorecase As Boolean = True) As String
    Dim rx As cregXLib
     ' create a new regx
    Set rx = rxMakeRxLib(sname)
    rx.ignorecase = ignorecase
    ' replace the string that matches the requested pattern
    rxReplace = rx.getReplace(sFrom, sTo)
    
End Function
Public Function rxPattern(sname As String) As String
    Dim rx As cregXLib
     ' create a new regx
    Set rx = rxMakeRxLib(sname)
    ' just returnthe pattern
    rxPattern = rx.Pattern
    
End Function
 Function rxMakeRxLib(sname As String) As cregXLib
    Dim rx As cregXLib, s As String
    Set rx = New cregXLib
    ' normally sname points to a preselected regEX
    ' if not known, silently assume its a regex pattern
        s = Replace(UCase(sname), " ", "")
        Select Case s
            Case "POSTALCODEUK"
                rx.init s, _
                "(((^[BEGLMNS][1-9]\d?) | (^W[2-9] ) | ( ^( A[BL] | B[ABDHLNRST] | C[ABFHMORTVW] | D[ADEGHLNTY] | E[HNX] | F[KY] | G[LUY] | H[ADGPRSUX] | I[GMPV] |" & _
                " JE | K[ATWY] | L[ADELNSU] | M[EKL] | N[EGNPRW] | O[LX] | P[AEHLOR] | R[GHM] | S[AEGKL-PRSTWY] | T[ADFNQRSW] | UB | W[ADFNRSV] | YO | ZE ) \d\d?) |" & _
                " (^W1[A-HJKSTUW0-9]) | ((  (^WC[1-2])  |  (^EC[1-4]) | (^SW1)  ) [ABEHMNPRVWXY] ) ) (\s*)?  ([0-9][ABD-HJLNP-UW-Z]{2})) | (^GIR\s?0AA)"
            
            Case "POSTALCODESPAIN"
                rx.init s, _
                    "^([1-9]{2}|[0-9][1-9]|[1-9][0-9])[0-9]{3}$"
                    
            Case "PHONENUMBERUS"
                rx.init s, _
                "^\(?(?<AreaCode>[2-9]\d{2})(\)?)(-|.|\s)?(?<Prefix>[1-9]\d{2})(-|.|\s)?(?<Suffix>\d{4})$"
                
            Case "CREDITCARD" 'amex/visa/mastercard
                rx.init s, _
                "^((4\d{3})|(5[1-5]\d{2}))(-?|\040?)(\d{4}(-?|\040?)){3}|^(3[4,7]\d{2})(-?|\040?)\d{6}(-?|\040?)\d{5}"
                
            Case "NUMERIC"
                rx.init s, _
                    "[\0-9]"
            
            Case "ALPHABETIC"
                rx.init s, _
                    "[\a-zA-Z]"
                    
            Case "NONNUMERIC"
                rx.init s, _
                    "[^\0-9]"
                    
            Case "IPADDRESS"
                rx.init s, _
                "^(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])$"
            
            Case "SINGLESPACE"  ' should take a replace value of "$1 "
                rx.init s, _
                    "(\S+)\x20{2,}(?=\S+)"
            
            Case "EMAIL"
                rx.init s, _
                    "^[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,4}$"
                    
            Case "EMAILINSIDE"
                rx.init s, _
                    "\b[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,4}\b"
                    
            Case "NONPRINTABLE"
                rx.init s, "[\x00-\x1F\x7F]"
                
                
            Case "PUNCTUATION"
                rx.init s, "[^A-Za-z0-9\x20]+"

            Case Else
                rx.init "Adhoc", sname
        
        End Select
    
    Set rxMakeRxLib = rx
End Function

see http://ramblings.mcpher.com/Home/excelquirks/gitthat and ramblings.mcpher.com/Home/excelquirks/regular-expressions