oEmbed gist

gistfile1.php

<?php
/*
Plugin Name: oEmbed gist
Plugin URI: http://firegoby.theta.ne.jp/wp/oembed-gist
Description: Embed source from gist.github.
Author: Takayuki Miyauchi (THETA NETWORKS Co,.Ltd)
Version: 0.1.0
Author URI: http://firegoby.theta.ne.jp/
*/

new gist();

class gist {

    private $html = '<script src="https://gist.github.com/%s.js"></script>';

    function __construct()
    {
        wp_embed_register_handler(
            'gist',
            '#https://gist.github.com/([0-9]+)#i',
            array(&$this, 'handler')
        );
        add_shortcode('gist', array(&$this, 'shortcode'));
    }

    public function handler($m, $attr, $url, $rattr)
    {
        return '[gist id="'.$m[1].'"]';
    }

    public function shortcode($p)
    {
        if (preg_match("/^[0-9]+$/", $p['id'])) {
            return sprintf($this->html, $p['id']);
        }
    }
}

?>