/**
* @param NodeInterface $node
* @return $this
*/
protected function writeInternal(NodeInterface $node)
{
$len = 1;
if ($node->getAttributes() != null) {
$len += count($node->getAttributes()) * 2;
}
if (count($node->getChildren()) > 0) {
$len += 1;
}
if (strlen($node->getData()) > 0) {
$len += 1;
}
$this->writeListStart($len);
$this->writeString($node->getName());
$this->writeAttributes($node->getAttributes());
if (strlen($node->getData()) > 0) {
$this->writeBytes($node->getData());
}
if ($node->getChildren()) {
$this->writeListStart(count($node->getChildren()));
foreach ($node->getChildren() as $child) {
$this->writeInternal($child);
}
}
return $this;
}
