/**
* Handles a bulk reply returned by Redis.
*
* @param ComposableConnectionInterface $connection Connection to Redis.
* @param string $lengthString Bytes size of the bulk reply.
* @return string
*/
public function handle(ComposableConnectionInterface $connection, $lengthString)
{
$length = (int) $lengthString;
if ("{$length}" !== $lengthString) {
CommunicationException::handle(new ProtocolException($connection, "Cannot parse '{$lengthString}' as bulk length"));
}
if ($length >= 0) {
return substr($connection->readBytes($length + 2), 0, -2);
}
if ($length == -1) {
return null;
}
}
/**
* {@inheritdoc}
*/
public function read(ComposableConnectionInterface $connection)
{
$chunk = $connection->readLine();
$prefix = $chunk[0];
$payload = substr($chunk, 1);
switch ($prefix) {
case '+':
// inline
switch ($payload) {
case 'OK':
return true;
case 'QUEUED':
return new ResponseQueued();
default:
return $payload;
}
case '$':
// bulk
$size = (int) $payload;
if ($size === -1) {
return null;
}
return substr($connection->readBytes($size + 2), 0, -2);
case '*':
// multi bulk
$count = (int) $payload;
if ($count === -1) {
return null;
}
if ($this->mbiterable == true) {
return new MultiBulkResponseSimple($connection, $count);
}
$multibulk = array();
for ($i = 0; $i < $count; $i++) {
$multibulk[$i] = $this->read($connection);
}
return $multibulk;
case ':':
// integer
return (int) $payload;
case '-':
// error
return new ResponseError($payload);
default:
Helpers::onCommunicationException(new ProtocolException($connection, "Unknown prefix: '{$prefix}'"));
}
}
