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<?php |
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/* |
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You may not change or alter any portion of this comment or credits |
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of supporting developers from this source code or any supporting source code |
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which is considered copyrighted (c) material of the original comment or credit authors. |
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This program is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
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*/ |
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namespace Xoops\Core\Text\Sanitizer\Extensions; |
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use Xoops\Core\Text\Sanitizer; |
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use Xoops\Core\Text\Sanitizer\FilterAbstract; |
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/** |
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* TextSanitizer filter - clean up HTML text |
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* |
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* @category Sanitizer |
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* @package Xoops\Core\Text |
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* @author Richard Griffith <[email protected]> |
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* @copyright 2015-2016 XOOPS Project (http://xoops.org) |
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* @license GNU GPL 2 (http://www.gnu.org/licenses/gpl-2.0.html) |
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* @link http://xoops.org |
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*/ |
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class Embed extends FilterAbstract |
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{ |
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/** |
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* @var array default configuration values |
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*/ |
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protected static $defaultConfiguration = [ |
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'enabled' => true, |
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'cache_time' => 15552000, // 180 days in seconds |
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]; |
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/** |
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* Make and URL's in the text clickable links |
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* |
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* @param string $text text string to filter |
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* |
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* @return mixed |
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*/ |
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public function applyFilter($text) |
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{ |
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if (!$this->config['enabled']) { |
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return $text; |
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} |
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$pattern = '/^(https?:\/\/([\p{L}\p{N}]{1,}\.){1,}[\p{L}\p{N}]{2,}[\/\?\.\-_&=:#\p{L}\p{N}]{0,})$/m'; |
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$text = preg_replace_callback( |
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$pattern, |
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[$this, 'decorateUrl'], |
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$text |
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); |
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return $text; |
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} |
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/** |
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* decorate a bare url with the help of embed/embed |
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* |
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* @param string $match string to be truncated |
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* |
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* @return string |
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*/ |
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protected function decorateUrl($match) { |
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$url = $match[1]; |
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$decorated = null; |
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$xoops = \Xoops::getInstance(); |
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$md5 = md5($url); |
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$crc = hash("crc32b", $url); |
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$key = implode('/', ['embed', substr($crc, -2), $md5]); |
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//$xoops->cache()->delete($key); |
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$decorated = $xoops->cache()->cacheRead( |
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$key, |
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function ($url) { |
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$return = null; |
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try { |
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$info = \Embed\Embed::create($url); |
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} catch (\Exception $e) { |
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$info = null; |
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} |
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if (is_object($info)) { |
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$return = $info->code; |
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if (empty($return)) { |
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return $this->mediaBox($info->url, $info->image, $info->title, $info->description); |
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} |
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$height = $info->getHeight(); |
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$width = $info->getWidth(); |
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if ($this->enableResponsive($return) && !empty($height) && !empty($width)) { |
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$ratio = (1.5 > ($width/$height)) ? '4by3' : '16by9'; |
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$return = '<div class="embed-responsive embed-responsive-' . $ratio . '">' . $return . '</div>'; |
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} |
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} |
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if (empty($return)) { |
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$return = $url; |
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} |
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return $return; |
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}, |
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$this->config['cache_time'], |
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$url |
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); |
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return $decorated; |
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} |
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protected function mediaBox($link, $imageSrc, $title, $description) |
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{ |
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$htmlTemplate = <<<'EOT' |
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<div class="media"> |
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<a class="pull-left" href="%1$s" rel="external"> |
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<img src="%2$s" class="media-object" style="max-height: 128px; max-width: 128px;"> |
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</a> |
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<div class="media-body"> |
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<h4 class="media-heading">%3$s</h4> |
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%4$s |
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</div> |
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</div> |
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EOT; |
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if(empty($imageSrc)) { |
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$imageSrc = \Xoops::getInstance()->url('media/xoops/images/icons/link-ext.svg'); |
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} |
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$box = sprintf($htmlTemplate, $link, $imageSrc, $title, $description); |
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return $box; |
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} |
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/** |
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* Check for know issues if wrapped in embed-responsive div |
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* |
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* @param string $code embed code to stest |
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* |
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* @return bool true if responsive should be enabled, false otherwise |
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*/ |
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protected function enableResponsive($code) |
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{ |
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// sites in this list are known to have problems |
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$excludeList = [ |
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'circuitlab.com', |
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]; |
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foreach ($excludeList as $test) { |
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if (false !== stripos($code, $test)) { |
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return false; |
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} |
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} |
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return true; |
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} |
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} |
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geekwright /
XoopsCore
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