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.
203 lines
7.4 KiB
203 lines
7.4 KiB
<?php //$id:$
|
|
/**
|
|
* Container for the scormMetadata class, setup to hold information about the <metadata> element in imsmanifest files
|
|
* @package dokeos.learnpath.scorm
|
|
*/
|
|
/**
|
|
* scormMetadata class, handling each <metadata> element found in an imsmanifest file
|
|
*/
|
|
class scormMetadata {
|
|
var $lom = '';
|
|
var $schema = '';
|
|
var $schemaversion = '';
|
|
var $location = '';
|
|
var $text = '';
|
|
var $attribs = array();
|
|
|
|
/**
|
|
* Class constructor. Works in two different ways defined by the first element, being 'db' or 'manifest'.
|
|
* If 'db', then it is built using the information available in the Dokeos database. If 'manifest', then it
|
|
* is built using the element given as a parameter, expecting it to be a <metadata> element pointer from the
|
|
* DOM parser.
|
|
* @param string Type of creation required. Can be 'db' or 'manifest' (default)
|
|
* @param mixed Depending on the type, can be the DB ID of the learnpath item or the pointer to the <metadata> element in the imsmanifest.xml file
|
|
* @return boolean True on success, false on failure
|
|
*/
|
|
function scormMetadata($type='manifest', &$element) {
|
|
if(isset($element))
|
|
{
|
|
$v = substr(phpversion(),0,1);
|
|
if($v == 4){
|
|
switch($type){
|
|
case 'db':
|
|
//TODO implement this way of metadata object creation
|
|
return false;
|
|
//break;
|
|
case 'manifest': //do the same as the default
|
|
//if($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($child->type)
|
|
{
|
|
case XML_ELEMENT_NODE:
|
|
//could be 'lom','schema','schemaversion' or 'location'
|
|
switch($child->tagname){
|
|
case 'lom':
|
|
$childchildren = $child->children();
|
|
foreach($childchildren as $index => $dummy)
|
|
{
|
|
$my_elem = $childchildren[$index];
|
|
//there is generally only one child here
|
|
//$this->lom[] = $my_elem->content;
|
|
$this->lom = $my_elem->content;
|
|
}
|
|
break;
|
|
case 'schema':
|
|
$childchildren = $child->children();
|
|
foreach($childchildren as $index => $dummy)
|
|
{
|
|
$my_elem = $childchildren[$index];
|
|
//there is generally only one child here
|
|
//$this->schema[] = $my_elem->content;
|
|
$this->schema = $my_elem->content;
|
|
}
|
|
break;
|
|
case 'schemaversion':
|
|
$childchildren = $child->children();
|
|
foreach($childchildren as $index => $dummy)
|
|
{
|
|
$my_elem = $childchildren[$index];
|
|
//there is generally only one child here
|
|
//$this->schemaversion[] = $my_elem->content;
|
|
$this->schemaversion = $my_elem->content;
|
|
}
|
|
break;
|
|
case 'location':
|
|
$childchildren = $child->children();
|
|
foreach($childchildren as $index => $dummy)
|
|
{
|
|
$my_elem = $childchildren[$index];
|
|
//there is generally only one child here
|
|
//$this->location[] = $my_elem->content;
|
|
$this->location = $my_elem->content;
|
|
}
|
|
break;
|
|
}
|
|
break;
|
|
case XML_TEXT_NODE:
|
|
if(trim($child->content) != '')
|
|
{
|
|
if(count($children == 1)){
|
|
//if this is the only child at this level and it is a content... save differently
|
|
$this->text = $child->content;
|
|
}else{
|
|
$this->text[$element->tagname] = $child->content;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
$attributes = $element->attributes();
|
|
//$keep_href = '';
|
|
if(is_array($attributes)){
|
|
foreach($attributes as $a1 => $dummy)
|
|
{
|
|
$attrib =& $attributes[$a1];
|
|
if(trim($attrib->value) != ''){
|
|
$this->attribs[$attrib->name] = $attrib->value;
|
|
}
|
|
}
|
|
}
|
|
return true;
|
|
//break;
|
|
}
|
|
}elseif($v == 5){
|
|
//parsing using PHP5 DOMXML methods
|
|
switch($type){
|
|
case 'db':
|
|
//TODO implement this way of metadata object creation
|
|
return false;
|
|
//break;
|
|
case 'manifest': //do the same as the default
|
|
$children = $element->childNodes;
|
|
foreach($children as $child)
|
|
{
|
|
switch($child->nodeType)
|
|
{
|
|
case XML_ELEMENT_NODE:
|
|
//could be 'lom','schema','schemaversion' or 'location'
|
|
switch($child->tagName){
|
|
case 'lom':
|
|
$childchildren = $child->childNodes;
|
|
foreach($childchildren as $childchild)
|
|
{
|
|
//$this->lom = $childchild->textContent;
|
|
$this->lom = $childchild->nodeValue;
|
|
}
|
|
break;
|
|
case 'schema':
|
|
$childchildren = $child->childNodes;
|
|
foreach($childchildren as $childchild)
|
|
{
|
|
//there is generally only one child here
|
|
//$this->schema = $childchildren[$index]->textContent;
|
|
$this->schema = $childchild->nodeValue;
|
|
}
|
|
break;
|
|
case 'schemaversion':
|
|
$childchildren = $child->childNodes;
|
|
foreach($childchildren as $childchild)
|
|
{
|
|
//there is generally only one child here
|
|
//$this->schemaversion = $childchildren[$index]->textContent;
|
|
$this->schemaversion = $childchild->nodeValue;
|
|
}
|
|
break;
|
|
case 'location':
|
|
$childchildren = $child->childNodes;
|
|
foreach($childchildren as $childchild)
|
|
{
|
|
//there is generally only one child here
|
|
//$this->location = $childchildren[$index]->textContent;
|
|
$this->location = $childchild->nodeValue;
|
|
}
|
|
break;
|
|
}
|
|
break;
|
|
case XML_TEXT_NODE:
|
|
if(trim($child->textContent) != '')
|
|
{
|
|
if(count($children == 1)){
|
|
//if this is the only child at this level and it is a content... save differently
|
|
$this->text = $child->textContent;
|
|
}else{
|
|
$this->text[$element->tagName] = $child->textContent;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
$attributes = $element->attributes;
|
|
//$keep_href = '';
|
|
if(is_array($attributes)){
|
|
foreach($attributes as $attrib)
|
|
{
|
|
if(trim($attrib->value) != ''){
|
|
$this->attribs[$attrib->name] = $attrib->value;
|
|
}
|
|
}
|
|
}
|
|
return true;
|
|
//break;
|
|
}
|
|
}else{
|
|
//cannot parse because not PHP4 nor PHP5... We should not even be here anyway...
|
|
return false;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
}
|
|
?>
|