PowerShell script for converting Reveal.js output by pandoc

gistfile1.txt

# usage: <source-path> | md2reveal [-block <script-block>]
[CmdletBinding()]
param(
    [parameter(Mandatory=$true, ValueFromPipeline=$true)]
    [ValidateNotNullOrEmpty()]
    [string]$source,
    [scriptblock]$block
)

if ($block -eq $null) { 
    $block = { $_ | out-file -encoding utf8 ([IO.Path]::ChangeExtension($source, 'html')) | out-null } 
}

$file = Split-Path $myInvocation.MyCommand.path 

$output = pandoc --section-divs -t html5 -s --template $file\templates\reveal.js\template-revealjs.html $source

(,$output) | %{ &$block }