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XmlHandler.php
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Sun, Jan 12, 11:12

XmlHandler.php
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<?php
/**
* Mime Type: application/xml
*
* @author Zack Douglas <zack@zackerydouglas.info>
* @author Nathan Good <me@nategood.com>
*/
namespace Httpful\Handlers;
class XmlHandler extends MimeHandlerAdapter
{
/**
* @var string $namespace xml namespace to use with simple_load_string
*/
private $namespace;
/**
* @var int $libxml_opts see http://www.php.net/manual/en/libxml.constants.php
*/
private $libxml_opts;
/**
* @param array $conf sets configuration options
*/
public function __construct(array $conf = array())
{
$this->namespace = isset($conf['namespace']) ? $conf['namespace'] : '';
$this->libxml_opts = isset($conf['libxml_opts']) ? $conf['libxml_opts'] : 0;
}
/**
* @param string $body
* @return mixed
* @throws Exception if unable to parse
*/
public function parse($body)
{
if (empty($body))
return null;
$parsed = simplexml_load_string($body, null, $this->libxml_opts, $this->namespace);
if ($parsed === false)
throw new \Exception("Unable to parse response as XML");
return $parsed;
}
/**
* @param mixed $payload
* @return string
* @throws Exception if unable to serialize
*/
public function serialize($payload)
{
list($_, $dom) = $this->_future_serializeAsXml($payload);
return $dom->saveXml();
}
/**
* @author Zack Douglas <zack@zackerydouglas.info>
*/
private function _future_serializeAsXml($value, $node = null, $dom = null)
{
if (!$dom) {
$dom = new \DOMDocument;
}
if (!$node) {
if (!is_object($value)) {
$node = $dom->createElement('response');
$dom->appendChild($node);
} else {
$node = $dom;
}
}
if (is_object($value)) {
$objNode = $dom->createElement(get_class($value));
$node->appendChild($objNode);
$this->_future_serializeObjectAsXml($value, $objNode, $dom);
} else if (is_array($value)) {
$arrNode = $dom->createElement('array');
$node->appendChild($arrNode);
$this->_future_serializeArrayAsXml($value, $arrNode, $dom);
} else if (is_bool($value)) {
$node->appendChild($dom->createTextNode($value?'TRUE':'FALSE'));
} else {
$node->appendChild($dom->createTextNode($value));
}
return array($node, $dom);
}
/**
* @author Zack Douglas <zack@zackerydouglas.info>
*/
private function _future_serializeArrayAsXml($value, &$parent, &$dom)
{
foreach ($value as $k => &$v) {
$n = $k;
if (is_numeric($k)) {
$n = "child-{$n}";
}
$el = $dom->createElement($n);
$parent->appendChild($el);
$this->_future_serializeAsXml($v, $el, $dom);
}
return array($parent, $dom);
}
/**
* @author Zack Douglas <zack@zackerydouglas.info>
*/
private function _future_serializeObjectAsXml($value, &$parent, &$dom)
{
$refl = new \ReflectionObject($value);
foreach ($refl->getProperties() as $pr) {
if (!$pr->isPrivate()) {
$el = $dom->createElement($pr->getName());
$parent->appendChild($el);
$this->_future_serializeAsXml($pr->getValue($value), $el, $dom);
}
}
return array($parent, $dom);
}
}

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