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open($zipFile);
$content = $zip->getFromName($xmlFile);
$zip->close();
if ($content === false) {
return false;
}
return $this->getDomFromString($content);
}
/**
* Get DOMDocument from content string.
*
* @param string $content
*
* @return DOMDocument
*/
public function getDomFromString($content)
{
if (\PHP_VERSION_ID < 80000) {
$originalLibXMLEntityValue = libxml_disable_entity_loader(true);
}
$this->dom = new DOMDocument();
$this->dom->loadXML($content);
if (\PHP_VERSION_ID < 80000) {
libxml_disable_entity_loader($originalLibXMLEntityValue);
}
return $this->dom;
}
/**
* Get elements.
*
* @param string $path
* @param DOMElement $contextNode
*
* @return DOMNodeList
*/
public function getElements($path, ?DOMElement $contextNode = null)
{
if ($this->dom === null) {
return [];
}
if ($this->xpath === null) {
$this->xpath = new DOMXpath($this->dom);
}
if (null === $contextNode) {
return $this->xpath->query($path);
}
return $this->xpath->query($path, $contextNode);
}
/**
* Registers the namespace with the DOMXPath object.
*
* @param string $prefix The prefix
* @param string $namespaceURI The URI of the namespace
*
* @return bool true on success or false on failure
*/
public function registerNamespace($prefix, $namespaceURI)
{
if ($this->dom === null) {
throw new InvalidArgumentException('Dom needs to be loaded before registering a namespace');
}
if ($this->xpath === null) {
$this->xpath = new DOMXpath($this->dom);
}
return $this->xpath->registerNamespace($prefix, $namespaceURI);
}
/**
* Get element.
*
* @param string $path
* @param DOMElement $contextNode
*
* @return null|DOMElement
*/
public function getElement($path, ?DOMElement $contextNode = null)
{
$elements = $this->getElements($path, $contextNode);
if ($elements->length > 0) {
return $elements->item(0);
}
return null;
}
/**
* Get element attribute.
*
* @param string $attribute
* @param DOMElement $contextNode
* @param string $path
*
* @return null|string
*/
public function getAttribute($attribute, ?DOMElement $contextNode = null, $path = null)
{
$return = null;
if ($path !== null) {
$elements = $this->getElements($path, $contextNode);
if ($elements->length > 0) {
/** @var DOMElement $node Type hint */
$node = $elements->item(0);
$return = $node->getAttribute($attribute);
}
} else {
if ($contextNode !== null) {
$return = $contextNode->getAttribute($attribute);
}
}
return ($return == '') ? null : $return;
}
/**
* Get element value.
*
* @param string $path
* @param DOMElement $contextNode
*
* @return null|string
*/
public function getValue($path, ?DOMElement $contextNode = null)
{
$elements = $this->getElements($path, $contextNode);
if ($elements->length > 0) {
return $elements->item(0)->nodeValue;
}
return null;
}
/**
* Count elements.
*
* @param string $path
* @param DOMElement $contextNode
*
* @return int
*/
public function countElements($path, ?DOMElement $contextNode = null)
{
$elements = $this->getElements($path, $contextNode);
return $elements->length;
}
/**
* Element exists.
*
* @param string $path
* @param DOMElement $contextNode
*
* @return bool
*/
public function elementExists($path, ?DOMElement $contextNode = null)
{
return $this->getElements($path, $contextNode)->length > 0;
}
}