/**
* Find the child node matching the given node under the specified parent.
* UNSAFE: may return nodes marked as _alteration="removed"
* @param DOMNode $oParent
* @param MFElement $oRefNode
* @param string $sSearchId
* @throws Exception
*/
public static function _FindNode(DOMNode $oParent, MFElement $oRefNode, $sSearchId = null)
{
$oRes = null;
if ($oParent instanceof DOMDocument) {
$oDoc = $oParent->firstChild->ownerDocument;
$oRoot = $oParent;
} else {
$oDoc = $oParent->ownerDocument;
$oRoot = $oParent;
}
$oXPath = new DOMXPath($oDoc);
if ($oRefNode->hasAttribute('id')) {
// Find the first element having the same tag name and id
if (!$sSearchId) {
$sSearchId = $oRefNode->getAttribute('id');
}
$sXPath = './' . $oRefNode->tagName . "[@id='{$sSearchId}']";
$oRes = $oXPath->query($sXPath, $oRoot)->item(0);
} else {
// Get the first one having the same tag name (ignore others)
$sXPath = './' . $oRefNode->tagName;
$oRes = $oXPath->query($sXPath, $oRoot)->item(0);
}
return $oRes;
}
