You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
209 lines
6.9 KiB
209 lines
6.9 KiB
<?php //$id:$
|
|
/**
|
|
* Container for the scormResource class
|
|
* @package scorm.learnpath
|
|
* @author Yannick Warnier <ywarnier@beeznest.org>
|
|
*/
|
|
/**
|
|
* Class defining the <resource> tag in an imsmanifest.xml file
|
|
*
|
|
*/
|
|
class scormResource {
|
|
var $identifier = '';
|
|
var $type = 'webcontent';
|
|
//var $identifierref = '';
|
|
var $scormtype = 'sco'; //fix problems with ENI content where asset is not defined
|
|
var $base = '';
|
|
var $href = '';
|
|
var $metadata;
|
|
//var $file_href;
|
|
//var $file_metadata;
|
|
var $files = array();
|
|
var $dependencies = array();
|
|
|
|
/**
|
|
* Class constructor. Depending of the type of construction called ('db' or 'manifest'), will create a scormResource
|
|
* object from database records or from the DOM element given as parameter
|
|
* @param string Type of construction needed ('db' or 'manifest', default = 'manifest')
|
|
* @param mixed Depending on the type given, DB id for the lp_item or reference to the DOM element
|
|
*/
|
|
function scormResource($type='manifest',&$element) {
|
|
/*
|
|
echo "<pre>Analysing resource:<br />\n";
|
|
var_dump($element);
|
|
echo "</pre><br />\n";
|
|
*/
|
|
if(isset($element))
|
|
{
|
|
$v = substr(phpversion(),0,1);
|
|
if($v == 4){
|
|
switch($type){
|
|
case 'db':
|
|
//TODO implement this way of metadata object creation
|
|
return false;
|
|
case 'manifest': //do the same as the default
|
|
default:
|
|
//if($first_item->type == XML_ELEMENT_NODE) this is already check prior to the call to this function
|
|
$children = $element->children();
|
|
foreach($children as $a => $dummy)
|
|
{
|
|
$child =& $children[$a];
|
|
switch($child->type)
|
|
{
|
|
case XML_ELEMENT_NODE:
|
|
switch($child->tagname){
|
|
case 'file':
|
|
//echo "Child is a file tag<br />\n";
|
|
$this->files[] = $child->get_attribute('href');
|
|
//var_dump($this->files);
|
|
//ignoring file metadata
|
|
//files[] array contains all <file href='x'> tags one by one
|
|
break;
|
|
case 'metadata':
|
|
//echo "Child is a metadata tag<br />\n";
|
|
$this->metadata = new scormMetadata('manifest',$child);
|
|
break;
|
|
case 'dependency':
|
|
//echo "Child is a dependency tag<br />\n";
|
|
//need to get identifierref attribute inside dependency node
|
|
//dependencies[] array represents all <dependency identifierref='x'> tags united
|
|
$this->dependencies[] = $child->get_attribute('identifierref');
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
$attributes = $element->attributes();
|
|
//$keep_href = '';
|
|
if(count($attributes)>0){ //in some cases we get here with an empty attributes array
|
|
//TODO find when and why we get such a case (empty array)
|
|
foreach($attributes as $a1 => $dummy)
|
|
{
|
|
$attrib =& $attributes[$a1];
|
|
switch($attrib->name){
|
|
case 'identifier':
|
|
$this->identifier = $attrib->value;
|
|
break;
|
|
case 'type':
|
|
if(!empty($attrib->value)){
|
|
$this->type = $attrib->value;
|
|
}
|
|
break;
|
|
case 'scormtype':
|
|
if(!empty($attrib->value)){
|
|
$this->scormtype = $attrib->value;
|
|
}
|
|
break;
|
|
case 'base':
|
|
$this->base = $attrib->value;
|
|
break;
|
|
case 'href':
|
|
$this->href = $attrib->value;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
return true;
|
|
|
|
}
|
|
}elseif($v == 5){
|
|
//parsing using PHP5 DOMXML methods
|
|
switch($type){
|
|
case 'db':
|
|
//TODO implement this way of metadata object creation
|
|
return false;
|
|
case 'manifest': //do the same as the default
|
|
default:
|
|
//if($first_item->type == XML_ELEMENT_NODE) this is already check prior to the call to this function
|
|
$children = $element->childNodes;
|
|
foreach($children as $child)
|
|
{
|
|
switch($child->nodeType)
|
|
{
|
|
case XML_ELEMENT_NODE:
|
|
switch($child->tagName){
|
|
case 'file':
|
|
//echo "Child is a file tag<br />\n";
|
|
$this->files[] = $child->getAttribute('href');
|
|
break;
|
|
case 'metadata':
|
|
//echo "Child is a metadata tag<br />\n";
|
|
$this->metadata = new scormMetadata('manifest',$child);
|
|
break;
|
|
case 'dependency':
|
|
//need to get identifierref attribute inside dependency node
|
|
//dependencies[] array represents all <dependency identifierref='x'> tags united
|
|
$this->dependencies[] = $child->getAttribute('identifierref');
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
//$keep_href = '';
|
|
if($element->hasAttributes()){ //in some cases we get here with an empty attributes array
|
|
//TODO find when and why we get such a case (empty array)
|
|
$attributes = $element->attributes;
|
|
foreach($attributes as $attrib)
|
|
{
|
|
switch($attrib->name){
|
|
case 'identifier':
|
|
$this->identifier = $attrib->value;
|
|
break;
|
|
case 'type':
|
|
if(!empty($attrib->value)){
|
|
$this->type = $attrib->value;
|
|
}
|
|
break;
|
|
case 'scormtype':
|
|
if(!empty($attrib->value)){
|
|
$this->scormtype = $attrib->value;
|
|
}
|
|
break;
|
|
case 'base':
|
|
$this->base = $attrib->value;
|
|
break;
|
|
case 'href':
|
|
$this->href = $attrib->value;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
return true;
|
|
|
|
}
|
|
}else{
|
|
//cannot parse because not PHP4 nor PHP5... We should not even be here anyway...
|
|
return false;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
/**
|
|
* Path getter
|
|
* @return string Path for this resource
|
|
*/
|
|
function get_path()
|
|
{
|
|
if(!empty($this->href))
|
|
{
|
|
require_once('learnpath.class.php');
|
|
return learnpath::escape_string($this->href);
|
|
}else{
|
|
return '';
|
|
}
|
|
}
|
|
/**
|
|
* Scorm type getter
|
|
* @return string generally 'asset' or 'sco' as these are the only two values defined in SCORM 1.2
|
|
*/
|
|
function get_scorm_type()
|
|
{
|
|
if(!empty($this->scormtype)){
|
|
require_once('learnpath.class.php');
|
|
return learnpath::escape_string($this->scormtype);
|
|
}else{
|
|
return '';
|
|
}
|
|
}
|
|
}
|
|
?>
|
|
|