* @copyright 2014 – 2016 Heinrich-Heine-Universität Düsseldorf * @license http://www.gnu.org/licenses/gpl.html * @link https://github.com/coderkun/questlab */ namespace hhu\z; /** * Class to format text with different syntax tags. * * @author Oliver Hanraths */ class TextFormatter { /** * Linker to create links. * * @var \nre\core\Linker */ private $linker; /** * Media-Model to retrieve media data * * @static * @var \nre\core\Model */ private static $Media = null; /** * Create a new text formatter. * * @param \nre\core\Linker $linker Linker to create links with */ public function __construct(\nre\core\Linker $linker) { $this->linker = $linker; } /** * Format a string. * * @param string $string String to format * @return string Formatted string */ public function t($string) { // Use Textile \hhu\z\lib\Textile::load(); $textileParser = new \Netcarver\Textile\Parser('html5'); $string = $textileParser->textileThis($string); // Add link targets $string = $this->tLinks($string); // Handle Seminarymedia $string = $this->tSeminarymedia($string); // Return processed string return $string; } /** * Load the Media-Model if it is not loaded * * @return boolean Whether the Media-Model has been loaded or not */ private function loadMediaModel() { // Do not load Model if it has already been loaded if(!is_null(self::$Media)) { return true; } try { // Load class Model::load('media'); // Construct Model self::$Media = Model::factory('media'); } catch(\Exception $e) { } // Return whether Media-Model has been loaded or not return !is_null(self::$Media); } /** * Add “target” attribute to anchors (links). * * @param string $string String to format * @return string Formatted string */ private function tLinks($string) { if(!class_exists('\DOMDocument')) { return $string; } try { $dom = new \DOMDocument('1.0'); $dom->loadHTML(''.$string.''); foreach($dom->getElementsByTagName('a') as $link) { $link->setAttribute('target', '_blank'); } $body = $dom->getElementsByTagName('body')->item(0); $string = $dom->saveHTML($body); return trim(substr($string, 6, strlen($string) - 13)); } catch(\Exception $e) { return $string; } } /** * Handle including Seminarymedia. * * @param string $string String to format * @return string Formatted string */ private function tSeminarymedia($string) { $seminarymedia = array(); preg_match_all('/\[seminarymedia:(\d+)\]/iu', $string, $matches); //, PREG_SET_ORDER | PREG_OFFSET_CAPTURE); $seminarymediaIds = array_unique($matches[1]); foreach($seminarymediaIds as &$seminarymediaId) { $replacement = null; if(!is_null(\hhu\z\controllers\SeminaryController::$seminary) && $this->loadMediaModel()) { try { $medium = self::$Media->getSeminaryMediaById($seminarymediaId); $replacement = sprintf( '', $this->linker->link(array('media','seminary', \hhu\z\controllers\SeminaryController::$seminary['url'],$medium['url'])), $medium['description'] ); } catch(\nre\exceptions\IdNotFoundException $e) { } } $seminarymedia[$seminarymediaId] = $replacement; } foreach($seminarymedia as $seminarymediaId => $replacement) { $string = str_replace("[seminarymedia:$seminarymediaId]", $replacement, $string); } // Return new string return $string; } } ?>