mods/_core/imsafa/classes/A4aExport.class.php

   1 <?php
   2 /****************************************************************/
   3 /* ATutor                                                                                                               */
   4 /****************************************************************/
   5 /* Copyright (c) 2002-2009                                                                              */
   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 require_once(AT_INCLUDE_PATH.'../mods/_core/imsafa/classes/A4a.class.php');
  16 //require(AT_INCLUDE_PATH.'classes/zipfile.class.php'); // for zipfile
  17
  18 /**
  19  * Accessforall Export class.
  20  * Based on the specification at:
  21  *              http://www.imsglobal.org/accessibility/index.html
  22  *
  23  * @date        Oct 3rd, 2008
  24  * @author      Harris Wong
  25  */
  26 class A4aExport extends A4a {
  27         var $original_files = array();  //store all the primary/original resources in [id]=>[incrementer]=>[resource, language, type]
  28 //      var $alternative_files = array();       //secondary files aka. alternative, equivalent
  29
  30         /**
  31          * Get information for this content
  32          * @return the xml content
  33          */
  34         function getAlternative(){
  35                 $resources = parent::getPrimaryResources();
  36                 foreach($resources as $rid => $prop){
  37                         $resources_types = parent::getPrimaryResourcesTypes($rid);
  38             if (empty($resources_types)){
  39                 //if there are no resource types, then don't use it.
  40                 continue;
  41             }
  42
  43                         $temp = array();
  44                         $secondary_array = array();
  45                         foreach($resources_types as $rtid){
  46                                 $sec_resources['secondary_resources'] = parent::getSecondaryResources($rid);
  47                                 //determine secondary resource type
  48                                 foreach ($sec_resources['secondary_resources'] as $sec_id => $sec_resource){
  49                                         $current_sec_file = $sec_resource['resource'];
  50                                         $secondary_array['secondary_resources'][] = $current_sec_file ;
  51                                         //add to secondary file array if it's not there
  52                                         if (!isset($this->original_files[$current_sec_file]) || empty($this->original_files[$current_sec_file]) ){
  53                                                 //TODO merge these values i think
  54                                                 $this->original_files[$current_sec_file ] = $sec_resource;
  55                                                 $this->original_files[$current_sec_file ]['resource_type'][$prop['resource']][] = parent::getSecondaryResourcesTypes($sec_id);
  56                                         } else {
  57                                                 $this->original_files[$current_sec_file ]['resource_type'][$prop['resource']][] = parent::getSecondaryResourcesTypes($sec_id);
  58                                         }
  59                                         //add this primary file ref, and the resources type to the secondary file
  60                                         $this->original_files[$current_sec_file]['primary_resources'][$prop['resource']] = $rtid;
  61 //                                      $this->original_files[$current_sec_file]['primary_resources'][$prop['resource']]['language_code'] = $sec_resource['language_code'];
  62                                 }
  63                         }
  64                         $res_type['resource_type'] = $rtid;     //could be 1+
  65                         $temp = array_merge($prop, $res_type, $secondary_array);
  66
  67                         if (isset($this->original_files[$temp['resource']])){
  68                                 //use the existing temp array values, but merge in the secondary_array
  69                                 $temp = array_merge($this->original_files[$temp['resource']], $secondary_array);
  70                         }
  71                         if(!empty($temp)){
  72                                 $this->original_files[$temp['resource']] = $temp;
  73                         }
  74                 }
  75                 return $this->original_files;
  76         }
  77
  78         /**
  79          * Get all secondary files
  80          * @return array of secondary files that is being used in this->content.
  81          */
  82         function getAllSecondaryFiles(){
  83                 global $db;
  84                 $secondary_files = array();
  85
  86                 $sql = "SELECT DISTINCT secondary_resource FROM ".TABLE_PREFIX."primary_resources a LEFT JOIN ".TABLE_PREFIX."secondary_resources s
  87                                 ON a.primary_resource_id = s.primary_resource_id WHERE content_id=".$this->cid;
  88                 $result = mysql_query ($sql);
  89                 if ($result){
  90                         while ($row = mysql_fetch_assoc($result)){
  91                                 if (!empty($row['secondary_resource'])){
  92                                         $secondary_files[] = $row['secondary_resource'];
  93                                 }
  94                         }
  95                 }
  96                 return $secondary_files;
  97         }
  98
  99         // Save all the xml into an array.
 100         // key=filename, value=xml content
 101         function exportA4a(){
 102                 global $savant;
 103
 104                 $xml_array = array();   //array of xml
 105
 106                 // Get the alt content first.
 107                 $this->getAlternative();
 108
 109                 // Get original files' xml
 110                 foreach($this->original_files as $id=>$resource){
 111                         $orig_access_mode = array();
 112                         foreach($resource['resource_type'] as $type_id){
 113                                 if (!is_array($type_id)){
 114                                         //primary resource will always have just on type
 115                                         $orig_access_mode[] = $this->getResourceNameById($type_id);
 116                                 } else {
 117                                         foreach($type_id as $k=>$type_id2){
 118                                                 $orig_access_mode[] = $this->getResourceNameById($type_id2[0]);
 119                                         }
 120                                 }
 121                         }
 122                         $savant->assign('relative_path', $this->relative_path); //the template will need the relative path
 123                         $savant->assign('orig_access_mode', $orig_access_mode);
 124                         $savant->assign('language_code', $resource['language_code']);
 125                         $savant->assign('secondary_resources', $resource['secondary_resources']);
 126
 127                         // If this is an alternative, and it is mapping to
 128                         // 1+ original files.  Each of these mapping requires
 129                         // its own xml
 130                         if(isset($resource['primary_resources'])){
 131                                 foreach($resource['primary_resources'] as $uri=>$pri_resource_types){
 132                                         $savant->assign('primary_resource_uri', $uri);
 133                                         $savant->assign('primary_resources', $pri_resource_types);
 134                                         //A file can be both original and alternative, and each could represent diff language
 135                                         //Tried to resolve but the A4a v.2 only accept 1 language
 136 //                                      $savant->assign('language_code', $pri_resource_types['language_code']);
 137                                         //overwrite orig_access_mode
 138                                         $orig_access_mode = array(); //reinitialize
 139                                         foreach($resource['resource_type'][$uri] as $type_id){
 140                                                 $orig_access_mode[] = $this->getResourceNameById($type_id);
 141                                                 $savant->assign('orig_access_mode', $orig_access_mode);
 142                                                 $xml_array[$id.' to '.$uri][] = $savant->fetch(AT_INCLUDE_PATH.'../mods/_core/imsafa/classes/A4a.tmpl.php');
 143                                         }
 144
 145                                 }
 146                         } else {
 147                                 $savant->assign('primary_resource_uri', '');
 148                                 $savant->assign('primary_resources', '');
 149                                 $xml_array[$id] = $savant->fetch(AT_INCLUDE_PATH.'../mods/_core/imsafa/classes/A4a.tmpl.php');
 150                         }
 151                 }
 152                 return $xml_array;
 153         }
 154
 155         /**
 156          * Get resource name by id
 157          * @return      array
 158          */
 159         function getResourceNameById($type_id){
 160                 $orig_access_mode = '';
 161                 if (is_array($type_id)) {
 162                         $type_id = $type_id[0];
 163                 }
 164                 switch($type_id){
 165                         case 1:
 166                                 $orig_access_mode = 'auditory';
 167                                 break;
 168                         case 3:
 169                                 $orig_access_mode = 'textual';
 170                                 break;
 171                         case 2:
 172                                 $orig_access_mode = 'sign_language';
 173                                 break;
 174                         case 4:
 175                                 $orig_access_mode = 'visual';
 176                                 break;
 177                         default:
 178                                 $orig_access_mode = '';
 179                 }
 180                 return $orig_access_mode;
 181         }
 182
 183 }
 184
 185 ?>