| 1: | <?php
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| 2: |
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| 3: | class HTMLPurifier_Filter_YouTube extends HTMLPurifier_Filter
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| 4: | {
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| 6: | |
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| 8: |
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| 9: | public $name = 'YouTube';
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| 10: |
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| 11: | |
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| 17: | public function preFilter($html, $config, $context)
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| 18: | {
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| 19: | $pre_regex = '#<object[^>]+>.+?' .
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| 20: | '(?:http:)?//www.youtube.com/((?:v|cp)/[A-Za-z0-9\-_=]+).+?</object>#s';
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| 21: | $pre_replace = '<span class="youtube-embed">\1</span>';
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| 22: | return preg_replace($pre_regex, $pre_replace, $html);
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| 23: | }
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| 31: | public function postFilter($html, $config, $context)
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| 32: | {
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| 33: | $post_regex = '#<span class="youtube-embed">((?:v|cp)/[A-Za-z0-9\-_=]+)</span>#';
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| 34: | return preg_replace_callback($post_regex, array($this, 'postFilterCallback'), $html);
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| 35: | }
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| 36: |
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| 41: | protected function armorUrl($url)
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| 42: | {
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| 43: | return str_replace('--', '--', $url);
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| 44: | }
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| 49: |
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| 50: | protected function postFilterCallback($matches)
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| 51: | {
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| 52: | $url = $this->armorUrl($matches[1]);
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| 53: | return '<object width="425" height="350" type="application/x-shockwave-flash" ' .
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| 54: | 'data="//www.youtube.com/' . $url . '">' .
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| 55: | '<param name="movie" value="//www.youtube.com/' . $url . '"></param>' .
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| 56: | '<!--[if IE]>' .
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| 57: | '<embed src="//www.youtube.com/' . $url . '"' .
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| 58: | 'type="application/x-shockwave-flash"' .
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| 59: | 'wmode="transparent" width="425" height="350" />' .
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| 60: | '<![endif]-->' .
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| 61: | '</object>';
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| 62: | }
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| 63: | }
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