1: | <?php
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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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9: | public $name = 'YouTube';
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17: | public function preFilter($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'), $html);
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35: | }
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41: | protected function armorUrl($url)
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42: | {
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43: | return str_replace('--', '--', $url);
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44: | }
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50: | protected function postFilterCallback($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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