<?php
class HTMLPurifier_Filter_YouTube extends HTMLPurifier_Filter
{
public $name = 'YouTube';
public function preFilter($html, $config, $context)
{
$pre_regex = '#<object[^>]+>.+?' .
'(?:http:)?//www.youtube.com/((?:v|cp)/[A-Za-z0-9\-_=]+).+?</object>#s';
$pre_replace = '<span class="youtube-embed">\1</span>';
return preg_replace($pre_regex, $pre_replace, $html);
}
public function postFilter($html, $config, $context)
{
$post_regex = '#<span class="youtube-embed">((?:v|cp)/[A-Za-z0-9\-_=]+)</span>#';
return preg_replace_callback($post_regex, array($this, 'postFilterCallback'), $html);
}
protected function armorUrl($url)
{
return str_replace('--', '--', $url);
}