/**
* Called when the request notifies us of an event.
*
* @param SplSubject $request The HTTP_Request2 instance
*
* @return void
* @throws HTTP_Request2_MessageException
*/
public function update(SplSubject $request)
{
/* @var $request HTTP_Request2 */
$event = $request->getLastEvent();
$encoded = false;
/* @var $event['data'] HTTP_Request2_Response */
switch ($event['name']) {
case 'receivedHeaders':
$this->_processingHeader = true;
$this->_redirect = $event['data']->isRedirect();
$this->_encoding = strtolower($event['data']->getHeader('content-encoding'));
$this->_possibleHeader = '';
break;
case 'receivedEncodedBodyPart':
if (!$this->_streamFilter && ($this->_encoding === 'deflate' || $this->_encoding === 'gzip')) {
$this->_streamFilter = stream_filter_append($this->_stream, 'zlib.inflate', STREAM_FILTER_WRITE);
}
$encoded = true;
// fall-through is intentional
// fall-through is intentional
case 'receivedBodyPart':
if ($this->_redirect) {
break;
}
if (!$encoded || !$this->_processingHeader) {
$bytes = fwrite($this->_stream, $event['data']);
} else {
$offset = 0;
$this->_possibleHeader .= $event['data'];
if ('deflate' === $this->_encoding) {
if (2 > strlen($this->_possibleHeader)) {
break;
}
$header = unpack('n', substr($this->_possibleHeader, 0, 2));
if (0 == $header[1] % 31) {
$offset = 2;
}
} elseif ('gzip' === $this->_encoding) {
if (10 > strlen($this->_possibleHeader)) {
break;
}
try {
$offset = HTTP_Request2_Response::parseGzipHeader($this->_possibleHeader, false);
} catch (HTTP_Request2_MessageException $e) {
// need more data?
if (false !== strpos($e->getMessage(), 'data too short')) {
break;
}
throw $e;
}
}
$this->_processingHeader = false;
$bytes = fwrite($this->_stream, substr($this->_possibleHeader, $offset));
}
if (false === $bytes) {
throw new HTTP_Request2_MessageException('fwrite failed.');
}
if ($this->_maxDownloadSize && ftell($this->_stream) - $this->_startPosition > $this->_maxDownloadSize) {
throw new HTTP_Request2_MessageException(sprintf('Body length limit (%d bytes) reached', $this->_maxDownloadSize));
}
break;
case 'receivedBody':
if ($this->_streamFilter) {
stream_filter_remove($this->_streamFilter);
$this->_streamFilter = null;
}
break;
}
}
