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<?php
/**
* OpenDD PHP Library.
*
* @package Elgg.Core
* @subpackage ODD
* @version 0.4
*/
/**
* Attempt to construct an ODD object out of a XmlElement or sub-elements.
*
* @param XmlElement $element The element(s)
*
* @return mixed An ODD object if the element can be handled, or false.
* @access private
*/
function ODD_factory (XmlElement $element) {
$name = $element->name;
$odd = false;
switch ($name) {
case 'entity' :
$odd = new ODDEntity("", "", "");
break;
case 'metadata' :
$odd = new ODDMetaData("", "", "", "");
break;
case 'relationship' :
$odd = new ODDRelationship("", "", "");
break;
}
// Now populate values
if ($odd) {
// Attributes
foreach ($element->attributes as $k => $v) {
$odd->setAttribute($k, $v);
}
// Body
$body = $element->content;
$a = stripos($body, "<![CDATA");
$b = strripos($body, "]]>");
if (($body) && ($a !== false) && ($b !== false)) {
$body = substr($body, $a + 8, $b - ($a + 8));
}
$odd->setBody($body);
}
return $odd;
}
/**
* Import an ODD document.
*
* @param string $xml The XML ODD.
*
* @return ODDDocument
* @access private
*/
function ODD_Import($xml) {
// Parse XML to an array
$elements = xml_to_object($xml);
// Sanity check 1, was this actually XML?
if ((!$elements) || (!$elements->children)) {
return false;
}
// Create ODDDocument
$document = new ODDDocument();
// Itterate through array of elements and construct ODD document
$cnt = 0;
foreach ($elements->children as $child) {
$odd = ODD_factory($child);
if ($odd) {
$document->addElement($odd);
$cnt++;
}
}
// Check that we actually found something
if ($cnt == 0) {
return false;
}
return $document;
}
/**
* Export an ODD Document.
*
* @param ODDDocument $document The Document.
*
* @return string
* @access private
*/
function ODD_Export(ODDDocument $document) {
return "$document";
}
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