Powershell function to remove unversioned items from a Subversion working copy

Clean-SvnWorkingCopy.ps1

Function Clean-SvnWorkingCopy {
    Param(
        [Parameter(Mandatory=$true, Position=0, HelpMessage="Path to the repository to clean")]
        [string]$repositoryPath
    )
    Process {
        Push-Location $repositoryPath
        [xml]$svnChangelist = Exec { svn status --xml }

        $entries = $svnChangelist.GetElementsByTagName("entry")

        foreach ($change in $entries) {
            if ($change.GetElementsByTagName("wc-status")[0].GetAttribute("item") -eq "unversioned") {
                $toRemove = $change.GetAttribute("path")
                Remove-Item -Force $toRemove
            }
        }
        Pop-Location
    }
}

Probably wants updated to revert other files that are versioned