178 lines
5 KiB
PHP
178 lines
5 KiB
PHP
<?php
|
||
|
||
/**
|
||
* Questlab
|
||
*
|
||
* @author Oliver Hanraths <oliver.hanraths@uni-duesseldorf.de>
|
||
* @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 <oliver.hanraths@uni-duesseldorf.de>
|
||
*/
|
||
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');
|
||
$dom->loadHTML('<!DOCTYPE html><html><head><meta charset="utf-8" /></head><body>'.$string.'</body></html>');
|
||
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(
|
||
'<img src="%s" alt="%s" />',
|
||
$this->linker->link(array('media','seminary', \hhu\z\controllers\SeminaryController::$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;
|
||
}
|
||
|
||
|
||
}
|
||
|
||
?>
|