docs/include/lib/qti.inc.php

   1 <?php
   2 /************************************************************************/
   3 /* AContent                                                             */
   4 /************************************************************************/
   5 /* Copyright (c) 2010                                                   */
   6 /* Inclusive Design Institute                                           */
   7 /*                                                                      */
   8 /* This program is free software. You can redistribute it and/or        */
   9 /* modify it under the terms of the GNU General Public License          */
  10 /* as published by the Free Software Foundation.                        */
  11 /************************************************************************/
  12
  13 /* Variables */
  14 $supported_media_type = array(  'gif', 'jpg', 'bmp', 'png', 'jpeg',
  15                                                                 'txt', 'css', 'html', 'htm', 'csv', 'asc', 'tsv', 'xml', 'xsl',
  16                                                                 'wav', 'au', 'mp3', 'mov');
  17
  18 /*
  19  * Create directory recursively based on the path.
  20  * @param       string  URI of the path, separated by the directory separator.
  21  *
  22  */
  23 function createDir($path){
  24         //base case
  25         if (is_dir($path)){
  26                 return;
  27         } else {
  28                 preg_match('/(.*)[\/\\\\]([^\\\\\/]+)\/?$/', $path, $matches);
  29                 createDir($matches[1]);
  30                 //make directory if it's not a filename.
  31                 if (preg_match('/(.*)\.[\w]+$/', $matches[2])===0) {
  32                         mkdir($matches[0], 0700);
  33                 }
  34         }
  35 }
  36
  37 /*
  38  * Trimming the value (For array walk function)
  39  * @param       value reference
  40  * @return      value reference
  41  */
  42 function trim_value(&$value) {
  43         $value = trim($value);
  44 }
  45
  46
  47 /**
  48   * Check if file exists, return true if it is, false otherwise
  49   * @param      array   resources that each array items store the information of the resource, such as
  50   *                                     link, href, etc.
  51   * @return     an array of existing filenames, return empty array otherwise.
  52   */
  53 function isQTIFileExist($attributes){
  54         global $supported_media_type;
  55         $existing_files = array();
  56
  57         foreach ($attributes as $resource=>$attrs){
  58                 if ($attrs['type'] == 'imsqti_xmlv1p1' || $attrs['type'] == 'imsqti_item_xmlv2p1'){
  59                         //loop through the file array
  60                         foreach($attrs['file'] as $file_id => $file_name){
  61                                 $file_pathinfo = pathinfo($file_name);
  62 //                              if ($file_pathinfo['basename'] == $attrs['href']){
  63 //                                      //This file will be parsed later
  64 //                                      continue;
  65 //                              }
  66
  67                                 if (in_array($file_pathinfo['extension'], $supported_media_type)){
  68                                         //check media
  69                                         if (file_exists(TR_CONTENT_DIR . $_SESSION['course_id'] . '/' . $file_name)){
  70                                                 $existing_files[] = $file_name;
  71                                         }
  72                                 }
  73                         }
  74                 }
  75         }
  76         return $existing_files;
  77 }
  78 ?>