Microsoft Access modString

getAlNumString

Public Function getAlNumString(strSource As String) As String
    Dim strResult As String
 
    Dim intIndex As Integer
    Dim strCharacter As String
 
    strResult = ""
    For intIndex = 1 To Len(strSource)
        strCharacter = Mid(strSource, intIndex, 1)
        Select Case Asc(strCharacter)
 
        ''A - Z, a - z
        Case 65 To 90, 97 To 122
            strResult = strResult & strCharacter
        
        '0 - 9
        Case 48 To 57
            strResult = strResult & strCharacter
        
        Case Else
            'nothing
        
        End Select
    Next
 
    getAlNumString = strResult
End Function

getAlNumPunctString

Public Function getAlNumPunctString(strSource As String) As String
    Dim strResult As String
 
    Dim intIndex As Integer
    Dim strCharacter As String
 
    strResult = ""
    For intIndex = 1 To Len(strSource)
        strCharacter = Mid(strSource, intIndex, 1)
        Select Case Asc(strCharacter)
 
        'A - Z, a - z
        Case 65 To 90, 97 To 122
            strResult = strResult & strCharacter
        
        '0 - 9
        Case 48 To 57
            strResult = strResult & strCharacter
        
        '<space>, <comma>, <hyphen>, <dot>, <slash>
        Case 20, 44 To 47
            strResult = strResult & strCharacter
        
        Case Else
            'nothing
        
        End Select
    Next
 
    getAlNumPunctString = strResult
End Function

getPrintableString

Public Function getPrintableString(strSource As String) As String
    Dim strResult As String
 
    Dim intIndex As Integer
    Dim strCharacter As String
 
    strResult = ""
    For intIndex = 1 To Len(strSource)
        strCharacter = Mid(strSource, intIndex, 1)
        Select Case Asc(strCharacter)
 
        'ASCII printable characters
        Case 20 To 126
            strResult = strResult & strCharacter
 
        Case Else
            'nothing
        
        End Select
    Next
 
    getPrintableString = strResult
End Function

matchesRegEx

Public Function matchesRegEx( _
    strString As String, _
    strRegEx As String, _
    Optional blnIgnoreCase As Boolean = False _
    ) As Boolean
    Dim blnResult As Boolean
 
    Dim rgx As RegExp
 
    Set rgx = New RegExp
    With rgx
        .IgnoreCase = blnIgnoreCase
        .Pattern = strRegEx
        blnResult = .Test(strString)
    End With
 
    matchesRegEx = blnResult
End Function

replaceRegEx

Public Function replaceRegEx( _
    strSource As String, _
    strFromRegEx As String, _
    strToRegEx As String, _
    Optional blnIgnoreCase As Boolean = False _
    ) As String
    Dim strResult As String
    
    Dim rgx As RegExp
    
    Set rgx = New RegExp
    With rgx
        .IgnoreCase = blnIgnoreCase
        .Pattern = strFromRegEx
        strResult = .Replace(strSource, strToRegEx)
    End With
    
    replaceRegEx = strResult
End Function