How would you rewrite this method with less duplicate code?

[joncom]

This code works perfectly fine for my purposes.

However, it's a little ugly because there is obvious duplication.

I've been playing with this and regular expressions for about an hour and could not seem to merge the check into a single expression.

But I'm quite certain it must be possible to have optional matches...

Any tips, even if it is simply a suggestion of what keywords I should be Googling?

Func GetNthValueFromStatubar($n)
    ; Get status text as string.
    $Status = StatusbarGetText($MainWindowTitle)
    ; Find value based on N.
    If $n = 1 Then
        $Result = StringRegExp( $Status, "[A-Za-z: ]+\$([A-Z0-9]+)", 1 )
    ElseIf $n = 2 Then
        $Result = StringRegExp( $Status, "[A-Za-z: ]+\$([A-Z0-9]+)[\s]*[A-Za-z: ]+\$([A-Z0-9]+)", 1 )
    ElseIf $n = 3 Then
        $Result = StringRegExp( $Status, "[A-Za-z: ]+\$([A-Z0-9]+)[\s]*[A-Za-z: ]+\$([A-Z0-9]+)[\s]*[A-Za-z: ]+\$([A-Z0-9]+)", 1 )
    EndIf
    Return $Result[$n - 1]
EndFunc

[joncom]

The following achieved the what I was going for:

Func GetNthValueFromStatubar($n)
    ; Get status text as string.
    $Status = StatusbarGetText($MainWindowTitle)
    ; Find values within the string.
    $Result = StringRegExp( $Status, "[A-Za-z: ]+\$([A-Z0-9]+)(?:[\s]*[A-Za-z: ]+\$([A-Z0-9]+))?(?:[\s]*[A-Za-z: ]+\$([A-Z0-9]+))?", 1 )
    ; Return the desired value.
    Return $Result[$n - 1]
EndFunc

Edited April 25, 2013 by joncom