Source code for wildcards.vbs

Option Explicit

WScript.Echo Join( GetFiles( WScript.Arguments.Unnamed.Item(0) ), vbCrLf )

Function GetFiles( strFilespec )

' Name     : GetFiles

' Function : List all files matching the specified filespec, all DOS wildcards allowed

' Returns  : An array of fully qualified paths of all matching files, or a single element array with the text "Error"

' Remarks  : If no folder is specified, the current directory will be assumed.

'            DOS wildcards "*" and "?" are allowed in the FILE name and/or extension, but NOT in the DIRECTORIES.

'            E.g. "D:\folder\*file*_*.??" is allowed, but "D:\folder\*\file*.??" is NOT.

' Author   : Rob van der Woude, http://www.robvanderwoude.com

' Version  : 1.00, 2017-01-31

	Dim colFiles, objFile, objFolder, objFSO, objRE, wshShell

	Dim strFiles, strFolder, strPattern

	GetFiles = Array( "Error" )

	' Return "Error" if no filespec is specified

	If Trim( strFilespec ) = "" Then Exit Function

	' Handle (unlikely) error in specified UNC path

	Set objRE = New RegExp

	objRE.Pattern = "^\\\\" ' Check if filespec starts with double backslash

	If objRE.Test( strFilespec ) Then

		' Check if filespec is a valid UNC path: \\server\share\relativepath

		objRE.Pattern = "^\\\\[\w-]+\\[\w\$-]+\\[^\\]"

		If Not objRE.Test( strFilespec ) Then

			Set objRE = Nothing

			Exit Function

		End If

	End If

	Set wshShell = CreateObject( "WScript.Shell" )

	Set objFSO   = CreateObject( "Scripting.FileSystemObject" )

	If InStr( strFilespec, "\" ) And Len( strFilespec ) > 1 Then

		' If filespec starts with single backslash, prefix it with current directory's drive

		If Left( strFilespec, 1 ) = "\" And Not Left( strFilespec, 2 ) = "\\" Then

			strFilespec = objFSO.GetDriveName( wshShell.CurrentDirectory ) & strFilespec

		End If

		' Split filespec into parent directory and actual FILE spec

		strFolder   = Mid( strFilespec, 1, InStrRev( strFilespec, "\" ) )

		strFilespec = Mid( strFilespec, InStrRev( strFilespec, "\" ) + 1 )

	End If

	' Assume current directory if no parent directory is specified

	If strFolder = "" Then strFolder = wshShell.CurrentDirectory

	' Quit if folder does not exist

	If Not objFSO.FolderExists( strFolder ) Then

		Set objRE    = Nothing

		Set objFSO   = Nothing

		Set wshShell = Nothing

		Exit Function

	End If

	' Convert DOS wildcards to regex pattern

	objRE.Pattern    = "([\.\(\)\[\]\{\}\$])"

	objRE.Global     = True

	objRE.IgnoreCase = True

	strPattern       = objRE.Replace( strFilespec, "\$1" )

	strPattern       = Replace( strPattern,  "?", "[^\\]"  )

	strPattern       = Replace( strPattern,  "*", "[^\\]*" )

	objRE.Pattern    = "(^|\\)" & strPattern & "$"

	' Get a collection of files

	Set objFolder = objFSO.GetFolder( strFolder )

	Set colFiles  = objFolder.Files

	strFiles = ""

	' Iterate through the list of files

	For Each objFile In colFiles

		' Check if the file name matches filespec

		If objRE.Test( objFile.Path ) Then

			' Add the file to the list

			strFiles = strFiles & ";" & objFile.Path

		End If

	Next

	' Return the list of files as an array

	GetFiles = Split( Mid( strFiles, 2 ), ";" )

	' Cleanup

	Set colFiles  = Nothing

	Set objFolder = Nothing

	Set objRE     = Nothing

	Set objFSO    = Nothing

	Set wshShell  = Nothing

End Function