class.ilHtmlImageMapFileInputGUI.php

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<?php
/* Copyright (c) 1998-2013 ILIAS open source, Extended GPL, see docs/LICENSE */
 
require_once 'Services/Form/classes/class.ilFileInputGUI.php';
require_once 'Modules/TestQuestionPool/classes/class.assAnswerImagemap.php';
 
class ilHtmlImageMapFileInputGUI extends ilFileInputGUI
{
        protected $shapes = array();
        
        function checkInput()
        {
                global $lng;
 
                if(!parent::checkInput())
                {
                        return false;
                }
 
                $tmp_file_name = $_FILES[$this->getPostVar()]['tmp_name'];
                if(strlen($tmp_file_name) == 0)
                {
                        return true;
                }
 
                if(!is_readable($tmp_file_name))
                {
                        $this->setAlert($lng->txt('ass_imap_map_file_not_readable'));
                        return false;
                }
 
                $contents = file_get_contents($tmp_file_name);
                $matches  = null;
                if(
                        !preg_match_all('/<area(.+)>/siU', $contents, $matches) ||
                        !is_array($matches) ||
                        !isset($matches[1]) ||
                        count($matches[1]) == 0
                )
                {
                        $this->setAlert($lng->txt('ass_imap_no_map_found'));
                        return false;
                }
 
                for($i = 0; $i< count($matches[1]); $i++)
                {
                        preg_match("/alt\s*=\s*\"(.+)\"\s*/siU", $matches[1][$i], $alt);
                        preg_match("/coords\s*=\s*\"(.+)\"\s*/siU", $matches[1][$i], $coords);
                        preg_match("/shape\s*=\s*\"(.+)\"\s*/siU", $matches[1][$i], $shape);
 
                        $this->shapes[] = new ASS_AnswerImagemap($alt[1], 0.0, $i, $coords[1], $shape[1]);
                }
 
                return true;
        }
 
        public function getShapes()
        {
                return $this->shapes;
        }
}