Pattern match count in excel (regex & vba)

Question

I have an Office 2007 .XLSX file containing over 5000 records like the below (a single cell with multiple rows of text). The issue: on an adjacent cell, put count

Answer 1

You can also include newlines in the Pattern expression by using \n. this way, you don't have to split the text in an array:

Private Function String_CountRegExp_Debug()

    'Input of the test text
    Dim TestText As String
    TestText = "1/15/2013 1:30:11 AM Userx" & vbNewLine & _
            "Had to reboot system" & vbNewLine & _
            "1/15/2013 1:32:11 AM Userx" & vbNewLine & _
            "System running finished rebooting and appears to be working" & vbNewLine & _
            "11/15/2013 12:30:11 AM Userx" & vbNewLine & _
            "System hung again"

    'Input of the Pattern
    Dim RE_Pattern As String
    RE_Pattern = "(\d{1,2})\/(\d{1,2})\/(\d{4})\s(\d{1,2}):(\d{1,2}):(\d{1,2})\s([A,P]M).*\n"

    Debug.Print String_CountRegExp(TestText, RE_Pattern)

End Function

Public Function String_CountRegExp(Text As String, Pattern As String) As Long
'Count the number of Pattern matches in a string.

    'Set up regular expression object
    Dim RE As New RegExp
    RE.Pattern = Pattern
    RE.Global = True
    RE.IgnoreCase = True
    RE.MultiLine = True
    'Retrieve all matches
    Dim Matches As MatchCollection
    Set Matches = RE.Execute(Text)
    'Return the corrected count of matches
    String_CountRegExp = Matches.Count

End Function