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<?php
/**
* A parser for XML that uses SimpleXMLElement
*
* @package Elgg.Core
* @subpackage XML
*/
class ElggXMLElement {
/**
* @var SimpleXMLElement
*/
private $_element;
/**
* Creates an ElggXMLParser from a string or existing SimpleXMLElement
*
* @param string|SimpleXMLElement $xml The XML to parse
*/
public function __construct($xml) {
if ($xml instanceof SimpleXMLElement) {
$this->_element = $xml;
} else {
// do not load entities
$disable_load_entities = libxml_disable_entity_loader(true);
$this->_element = new SimpleXMLElement($xml);
libxml_disable_entity_loader($disable_load_entities);
}
}
/**
* @return string The name of the element
*/
public function getName() {
return $this->_element->getName();
}
/**
* @return string[] The attributes
*/
public function getAttributes() {
//include namespace declarations as attributes
$xmlnsRaw = $this->_element->getNamespaces();
$xmlns = array();
foreach ($xmlnsRaw as $key => $val) {
$label = 'xmlns' . ($key ? ":$key" : $key);
$xmlns[$label] = $val;
}
//get attributes and merge with namespaces
$attrRaw = $this->_element->attributes();
$attr = array();
foreach ($attrRaw as $key => $val) {
$attr[$key] = $val;
}
$attr = array_merge((array) $xmlns, (array) $attr);
$result = array();
foreach ($attr as $key => $val) {
$result[$key] = (string) $val;
}
return $result;
}
/**
* @return string CData
*/
public function getContent() {
return (string) $this->_element;
}
/**
* @return ElggXMLElement[] Child elements
*/
public function getChildren() {
$children = $this->_element->children();
$result = array();
foreach ($children as $val) {
$result[] = new ElggXMLElement($val);
}
return $result;
}
/**
* Override ->
*
* @param string $name Property name
* @return mixed
*/
function __get($name) {
switch ($name) {
case 'name':
return $this->getName();
break;
case 'attributes':
return $this->getAttributes();
break;
case 'content':
return $this->getContent();
break;
case 'children':
return $this->getChildren();
break;
}
return null;
}
/**
* Override isset
*
* @param string $name Property name
* @return boolean
*/
function __isset($name) {
switch ($name) {
case 'name':
return $this->getName() !== null;
break;
case 'attributes':
return $this->getAttributes() !== null;
break;
case 'content':
return $this->getContent() !== null;
break;
case 'children':
return $this->getChildren() !== null;
break;
}
return false;
}
}
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