chamilo-lms2/main/lp/scormMetadata.class.php

<?php
/* For licensing terms, see /license.txt */

/**
 * Container for the scormMetadata class, setup to hold information about the <metadata> element in imsmanifest files
 * @package chamilo.learnpath.scorm
 */

/**
 * scormMetadata class, handling each <metadata> element found in an imsmanifest file
 */
class scormMetadata
{
    public	$lom = '';
    public $schema = '';
    public $schemaversion = '';
    public $location = '';
    public $text = '';
    public $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 Chamilo 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
     */
    public function __construct($type = 'manifest', &$element)
    {
        if (isset($element)) {
            // Parsing using PHP5 DOMXML methods.
            switch ($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->nodeValue;
                                         }
                                         break;
                                     case 'schema':
                                         $childchildren = $child->childNodes;
                                         foreach ($childchildren as $childchild) {
                                             // There is generally only one child here.
                                             $this->schema = $childchild->nodeValue;
                                         }
                                         break;
                                     case 'schemaversion':
                                         $childchildren = $child->childNodes;
                                         foreach ($childchildren as $childchild) {
                                             // There is generally only one child here.
                                             $this->schemaversion = $childchild->nodeValue;
                                         }
                                         break;
                                     case 'location':
                                         $childchildren = $child->childNodes;
                                         foreach ($childchildren as $childchild) {
                                             // There is generally only one child here.
                                             $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;
            }

            // End parsing using PHP5 DOMXML methods.

        }
        return false;
    }
}