This appears to work. It requires a reference to VBA Extensibility.
[vba]
Option Explicit
Option Compare Text
Sub GrabFuncs()
Dim wb As Workbook
Dim vbp As VBProject
Dim vbc As VBComponent
Dim cm As CodeModule
Dim arr As Variant
Dim ws As Worksheet
Dim Counter As Long
Dim Funcs As Long
With Application
.ScreenUpdating = False
.DisplayAlerts = False
End With
Set ws = Worksheets.Add
ws.[a1:d1] = Array("Workbook", "Function", "Arguments", "Return Type")
For Each wb In Workbooks
Set vbp = wb.VBProject
For Each vbc In vbp.VBComponents
Set cm = vbc.CodeModule
arr = RegExpFind(cm.Lines(1, cm.CountOfLines), "Function \w+\([\w\s,]+\)([\w\s]+As[\w\s]+[a-z]+)?", , False)
If IsArray(arr) Then
For Counter = 0 To UBound(arr)
arr(Counter) = RegExpReplace(CStr(arr(Counter)), "\s+", " ")
Funcs = Funcs + 1
ws.Cells(Funcs + 1, 1) = wb.Name
ws.Cells(Funcs + 1, 2) = Split(Split(arr(Counter), "(")(0), "Function ")(1)
ws.Cells(Funcs + 1, 3) = Split(Split(arr(Counter), "(")(1), ")")(0)
If Right(arr(Counter), 1) <> ")" Then
ws.Cells(Funcs + 1, 4) = Split(Split(arr(Counter), ")")(1), "As ")(1)
Else
ws.Cells(Funcs + 1, 4) = "Variant"
End If
Next
End If
Next
Next
If Funcs = 0 Then
ws.Delete
MsgBox "No user defined functions found in open workbooks", vbInformation
Else
MsgBox "Found " & Funcs & " user defined functions", vbInformation
ws.Columns.AutoFit
End If
With Application
.ScreenUpdating = True
.DisplayAlerts = True
End With
End Sub
Function RegExpFind(LookIn As String, PatternStr As String, Optional Pos, _
Optional MatchCase As Boolean = True)
' This function uses Regular Expressions to parse a string (LookIn), and return matches to a
' pattern (PatternStr). Use Pos to indicate which match you want:
' Pos omitted : function returns a zero-based array of all matches
' Pos = 0 : the last match
' Pos = 1 : the first match
' Pos = 2 : the second match
' Pos = <positive integer> : the Nth match
' If Pos is greater than the number of matches, is negative, or is non-numeric, the function
' returns an empty string. If no match is found, the function returns an empty string
' If MatchCase is omitted or True (default for RegExp) then the Pattern must match case (and
' thus you may have to use [a-zA-Z] instead of just [a-z] or [A-Z]).
' If you use this function in Excel, you can use range references for any of the arguments.
' If you use this in Excel and return the full array, make sure to set up the formula as an
' array formula. If you need the array formula to go down a column, use TRANSPOSE()
Dim RegX As Object
Dim TheMatches As Object
Dim Answer() As String
Dim Counter As Long
' Evaluate Pos. If it is there, it must be numeric and converted to Long
If Not IsMissing(Pos) Then
If Not IsNumeric(Pos) Then
RegExpFind = ""
Exit Function
Else
Pos = CLng(Pos)
End If
End If
' Create instance of RegExp object
Set RegX = CreateObject("VBScript.RegExp")
With RegX
.Pattern = PatternStr
.Global = True
.IgnoreCase = Not MatchCase
End With
' Test to see if there are any matches
If RegX.test(LookIn) Then
' Run RegExp to get the matches, which are returned as a zero-based collection
Set TheMatches = RegX.Execute(LookIn)
' If Pos is missing, user wants array of all matches. Build it and assign it as the
' function's return value
If IsMissing(Pos) Then
ReDim Answer(0 To TheMatches.Count - 1) As String
For Counter = 0 To UBound(Answer)
Answer(Counter) = TheMatches(Counter)
Next
RegExpFind = Answer
' User wanted the Nth match (or last match, if Pos = 0). Get the Nth value, if possible
Else
Select Case Pos
Case 0 ' Last match
RegExpFind = TheMatches(TheMatches.Count - 1)
Case 1 To TheMatches.Count ' Nth match
RegExpFind = TheMatches(Pos - 1)
Case Else ' Invalid item number
RegExpFind = ""
End Select
End If
' If there are no matches, return empty string
Else
RegExpFind = ""
End If
' Release object variables
Set RegX = Nothing
Set TheMatches = Nothing
End Function
Function RegExpReplace(LookIn As String, PatternStr As String, Optional ReplaceWith As String = "", _
Optional ReplaceAll As Boolean = True, Optional MatchCase As Boolean = True)
' This function uses Regular Expressions to parse a string, and replace parts of the string
' matching the specified pattern with another string. The optional argument ReplaceAll controls
' whether all instances of the matched string are replaced (True) or just the first instance (False)
' By default, RegExp is case-sensitive in pattern-matching. To keep this, omit MatchCase or
' set it to True
' If you use this function from Excel, you may substitute range references for all the arguments
Dim RegX As Object
Set RegX = CreateObject("VBScript.RegExp")
With RegX
.Pattern = PatternStr
.Global = ReplaceAll
.IgnoreCase = Not MatchCase
End With
RegExpReplace = RegX.Replace(LookIn, ReplaceWith)
Set RegX = Nothing
End Function
[/vba]
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