/** * 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}'")); } }