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<?php
/**
* Whoops - php errors for cool kids
* @author Filipe Dobreira <http://github.com/filp>
*/
namespace Whoops\Handler;
use SimpleXMLElement;
use Whoops\Exception\Formatter;
/**
* Catches an exception and converts it to an XML
* response. Additionally can also return exception
* frames for consumption by an API.
*/
class XmlResponseHandler extends Handler
{
/**
* @var bool
*/
private $returnFrames = false;
/**
* @param bool|null $returnFrames
* @return bool|$this
*/
public function addTraceToOutput($returnFrames = null)
{
if (func_num_args() == 0) {
return $this->returnFrames;
}
$this->returnFrames = (bool) $returnFrames;
return $this;
}
/**
* @return int
*/
public function handle()
{
$response = [
'error' => Formatter::formatExceptionAsDataArray(
$this->getInspector(),
$this->addTraceToOutput()
),
];
echo $this->toXml($response);
return Handler::QUIT;
}
/**
* @return string
*/
public function contentType()
{
return 'application/xml';
}
/**
* @param SimpleXMLElement $node Node to append data to, will be modified in place
* @param array|\Traversable $data
* @return SimpleXMLElement The modified node, for chaining
*/
private static function addDataToNode(\SimpleXMLElement $node, $data)
{
assert(is_array($data) || $data instanceof Traversable);
foreach ($data as $key => $value) {
if (is_numeric($key)) {
// Convert the key to a valid string
$key = "unknownNode_". (string) $key;
}
// Delete any char not allowed in XML element names
$key = preg_replace('/[^a-z0-9\-\_\.\:]/i', '', $key);
if (is_array($value)) {
$child = $node->addChild($key);
self::addDataToNode($child, $value);
} else {
$value = str_replace('&', '&amp;', print_r($value, true));
$node->addChild($key, $value);
}
}
return $node;
}
/**
* The main function for converting to an XML document.
*
* @param array|\Traversable $data
* @return string XML
*/
private static function toXml($data)
{
assert(is_array($data) || $data instanceof Traversable);
$node = simplexml_load_string("<?xml version='1.0' encoding='utf-8'?><root />");
return self::addDataToNode($node, $data)->asXML();
}
}