A Small wordpress shortcode for Gists.

Gist.php

<?php
/*
 * To use this shortcode you must add the gist url and a file if you want
 * 
 * [gist url="https://gist.github.com/....." file="example.file"]
 * 
 * You can omit the file to show all files together
 */
 
class Gist {

	public function __construct() {
		add_shortcode( 'gist', array($this, 'shortcode') );
	}


	public function shortcode( $attributes )
	{
		$values = shortcode_atts([
			'url' => '', 
			'file' => ''
			], $attributes); 

		// Returning Empty if the url is Empty. 
		if($values['url'] == '') { return ''; }

		$output = '<script src="'. $values['url'] . '.js'; 

		if($values['file'] != '')
		{
			$output .= '?file=' . $values['file']; 
		}

		$output .= '"></script>'; 

		return $output;
	}

}

new Gist();