Command-line XSLT processor with PowerShell

There are already a lot of XSLT processors out there, such as MSXSL, but without downloading and installing an application you can create your own processor using a couple of PowerShell lines and the System.Xml.Xsl namespace of .Net:

param ($xml, $xsl, $output)

if (-not $xml -or -not $xsl -or -not $output)
{
	Write-Host "& .\xslt.ps1 [-xml] xml-input [-xsl] xsl-input [-output] transform-output"
	exit;
}

trap [Exception]
{
	Write-Host $_.Exception;
}

$xslt = New-Object System.Xml.Xsl.XslCompiledTransform;
$xslt.Load($xsl);
$xslt.Transform($xml, $output);

Write-Host "generated" $output;

What does this code do:

• Declare command-line parameters $xml, $xsl, $output
• Check parameters are passed to the script
• Set a trap to display detailed error message in case an exception is raised
• Load the XSLT file
• Transform XML and write result to output file