docs/mods/_core/imsqti/lib/qti.inc.php

   1 <?php
   2 /****************************************************************************/
   3 /* ATutor                                                                                                                                       */
   4 /****************************************************************************/
   5 /* Copyright (c) 2002-2008 by Greg Gay, Harris Wong                                                     */
   6 /* Inclusive Design Institute                                               */
   7 /* http://atutor.ca                                                                                                                     */
   8 /*                                                                                                                                                      */
   9 /* This program is free software. You can redistribute it and/or                        */
  10 /* modify it under the terms of the GNU General Public License                          */
  11 /* as published by the Free Software Foundation.                                                        */
  12 /****************************************************************************/
  13 // $Id$
  14
  15 /* Variables */
  16 $supported_media_type = array(  'gif', 'jpg', 'bmp', 'png', 'jpeg',
  17                                                                 'txt', 'css', 'html', 'htm', 'csv', 'asc', 'tsv', 'xml', 'xsl',
  18                                                                 'wav', 'au', 'mp3', 'mov');
  19
  20 /*
  21  * Create directory recursively based on the path.
  22  * @param       string  URI of the path, separated by the directory separator.
  23  *
  24  */
  25 function createDir($path){
  26         //base case
  27         if (is_dir($path)){
  28                 return;
  29         } else {
  30                 preg_match('/(.*)[\/\\\\]([^\\\\\/]+)\/?$/', $path, $matches);
  31                 createDir($matches[1]);
  32                 //make directory if it's not a filename.
  33                 if (preg_match('/(.*)\.[\w]+$/', $matches[2])===0) {
  34                         mkdir($matches[0], 0700);
  35                 }
  36         }
  37 }
  38
  39 /*
  40  * Trimming the value (For array walk function)
  41  * @param       value reference
  42  * @return      value reference
  43  */
  44 function trim_value(&$value) {
  45         $value = trim($value);
  46 }
  47
  48
  49 /**
  50   * Check if file exists, return true if it is, false otherwise
  51   * @param      array   resources that each array items store the information of the resource, such as
  52   *                                     link, href, etc.
  53   * @return     an array of existing filenames, return empty array otherwise.
  54   */
  55 function isQTIFileExist($attributes){
  56         global $supported_media_type;
  57         $existing_files = array();
  58
  59         foreach ($attributes as $resource=>$attrs){
  60                 if ($attrs['type'] == 'imsqti_xmlv1p1' || $attrs['type'] == 'imsqti_item_xmlv2p1'){
  61                         //loop through the file array
  62                         foreach($attrs['file'] as $file_id => $file_name){
  63                                 $file_pathinfo = pathinfo($file_name);
  64 //                              if ($file_pathinfo['basename'] == $attrs['href']){
  65 //                                      //This file will be parsed later
  66 //                                      continue;
  67 //                              }
  68
  69                                 if (in_array($file_pathinfo['extension'], $supported_media_type)){
  70                                         //check media
  71                                         if (file_exists(AT_CONTENT_DIR . $_SESSION['course_id'] . '/' . $file_name)){
  72                                                 $existing_files[] = $file_name;
  73                                         }
  74                                 }
  75                         }
  76                 }
  77         }
  78         return $existing_files;
  79 }
  80 ?>