/**
* The xmlSerialize metod is called during xml writing.
*
* Use the $writer argument to write its own xml serialization.
*
* An important note: do _not_ create a parent element. Any element
* implementing XmlSerializble should only ever write what's considered
* its 'inner xml'.
*
* The parent of the current element is responsible for writing a
* containing element.
*
* This allows serializers to be re-used for different element names.
*
* If you are opening new elements, you must also close them again.
*
* @param Writer $writer
* @return void
*/
function xmlSerialize(Writer $writer)
{
$reader = new Reader();
// Wrapping the xml in a container, so root-less values can still be
// parsed.
$xml = <<<XML
<?xml version="1.0"?>
<xml-fragment xmlns="http://sabre.io/ns">{$this->getXml()}</xml-fragment>
XML;
$reader->xml($xml);
$elementNamespace = null;
while ($reader->read()) {
if ($reader->depth < 1) {
// Skipping the root node.
continue;
}
switch ($reader->nodeType) {
case Reader::ELEMENT:
$writer->startElement($reader->getClark());
$empty = $reader->isEmptyElement;
while ($reader->moveToNextAttribute()) {
switch ($reader->namespaceURI) {
case '':
$writer->writeAttribute($reader->localName, $reader->value);
break;
case 'http://www.w3.org/2000/xmlns/':
// Skip namespace declarations
break;
default:
$writer->writeAttribute($reader->getClark(), $reader->value);
break;
}
}
if ($empty) {
$writer->endElement();
}
break;
case Reader::CDATA:
case Reader::TEXT:
$writer->text($reader->value);
break;
case Reader::END_ELEMENT:
$writer->endElement();
break;
}
}
}
