214 lines
6.4 KiB
PHP
214 lines
6.4 KiB
PHP
<?php
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/**
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* The Legend of Z
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*
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* @author Oliver Hanraths <oliver.hanraths@uni-duesseldorf.de>
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* @copyright 2014 Heinrich-Heine-Universität Düsseldorf
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* @license http://www.gnu.org/licenses/gpl.html
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* @link https://bitbucket.org/coderkun/the-legend-of-z
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*/
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namespace hhu\z;
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/**
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* Class to format text with different syntax tags.
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*
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* @author Oliver Hanraths <oliver.hanraths@uni-duesseldorf.de>
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*/
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class TextFormatter
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{
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/**
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* Linker to create links.
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*
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* @var \nre\core\Linker
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*/
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private $linker;
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/**
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* Media-Model to retrieve media data
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*
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* @static
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* @var \nre\core\Model
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*/
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private static $Media = null;
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/**
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* Create a new text formatter.
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*
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* @param \nre\core\Linker $linker Linker to create links with
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*/
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public function __construct(\nre\core\Linker $linker)
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{
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$this->linker = $linker;
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}
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/**
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* Format a string.
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*
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* @param string $string String to format
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* @return string Formatted string
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*/
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public function t($string)
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{
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// Use Textile
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\hhu\z\lib\Textile::load();
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$textileParser = new \Netcarver\Textile\Parser('html5');
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$string = $textileParser->textileRestricted($string, false, false);
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// Add link targets
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$string = $this->tLinks($string);
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// Handle custom formatting
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$string = $this->tCustom($string);
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// Handle Seminarymedia
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$string = $this->tSeminarymedia($string);
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// Return processed string
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return $string;
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}
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/**
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* Load the Media-Model if it is not loaded
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*
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* @return boolean Whether the Media-Model has been loaded or not
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*/
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private function loadMediaModel()
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{
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// Do not load Model if it has already been loaded
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if(!is_null(self::$Media)) {
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return true;
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}
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try {
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// Load class
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Model::load('media');
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// Construct Model
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self::$Media = Model::factory('media');
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}
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catch(\Exception $e) {
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}
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// Return whether Media-Model has been loaded or not
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return !is_null(self::$Media);
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}
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/**
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* Add “target” attribute to anchors (links).
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*
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* @param string $string String to format
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* @return string Formatted string
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*/
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private function tLinks($string)
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{
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if(!class_exists('\DOMDocument')) {
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return $string;
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}
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try {
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$dom = new \DOMDocument('1.0');
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$dom->loadHTML('<!DOCTYPE html><html><head><meta charset="utf-8" /></head><body>'.$string.'</body></html>');
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foreach($dom->getElementsByTagName('a') as $link) {
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$link->setAttribute('target', '_blank');
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}
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$body = $dom->getElementsByTagName('body')->item(0);
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$string = $dom->saveHTML($body);
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return trim(substr($string, 6, strlen($string) - 13));
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}
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catch(\Exception $e) {
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return $string;
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}
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}
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/**
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* Handle custom formatting syntax.
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*
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* @Deprecated
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* @param string $string String to format
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* @return string Formatted string
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*/
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private function tCustom($string)
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{
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// Important text
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$string = str_replace('[strong]', '<strong>', $string);
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$string = str_replace('[/strong]', '</strong>', $string);
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// Create tables
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$string = preg_replace('/(\[table\])\s+/u', '$1', $string);
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$string = preg_replace('/\s*(\[tr\])\s*/u', '$1', $string);
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$string = preg_replace('%\s+(\[/table\])%u', '$1', $string);
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$string = preg_replace('%\s*(\[/tr\])\s*%u', '$1', $string);
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$string = str_replace('[table]', '</p><table>', $string);
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$string = str_replace('[/table]', '</table><p>', $string);
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$string = str_replace('[tr]', '<tr>', $string);
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$string = str_replace('[/tr]', '</tr>', $string);
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$string = str_replace('[th]', '<th>', $string);
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$string = str_replace('[/th]', '</th>', $string);
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$string = str_replace('[td]', '<td>', $string);
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$string = str_replace('[/td]', '</td>', $string);
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// Return new string
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return $string;
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}
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/**
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* Handle including Seminarymedia.
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*
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* @param string $string String to format
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* @return string Formatted string
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*/
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private function tSeminarymedia($string)
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{
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$seminarymedia = array();
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preg_match_all('/\[seminarymedia:(\d+)\]/iu', $string, $matches); //, PREG_SET_ORDER | PREG_OFFSET_CAPTURE);
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$seminarymediaIds = array_unique($matches[1]);
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foreach($seminarymediaIds as &$seminarymediaId)
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{
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$replacement = null;
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if(!is_null(\hhu\z\controllers\SeminaryController::$seminary) && $this->loadMediaModel())
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{
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try {
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$medium = self::$Media->getSeminaryMediaById($seminarymediaId);
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$replacement = sprintf(
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'<img src="%s" alt="%s" />',
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$this->linker->link(array('media','seminary', \hhu\z\controllers\SeminaryController::$seminary['url'],$medium['url'])),
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$medium['description']
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);
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}
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catch(\nre\exceptions\IdNotFoundException $e) {
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}
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}
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$seminarymedia[$seminarymediaId] = $replacement;
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}
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foreach($seminarymedia as $seminarymediaId => $replacement) {
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$string = str_replace("[seminarymedia:$seminarymediaId]", $replacement, $string);
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}
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// Return new string
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return $string;
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}
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}
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?>
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