@param int $length Number of bytes to read from the connection.
| public readBuffer ( integer $length ) : string | ||
| $length | integer | |
| return | string | |
/**
* {@inheritdoc}
*/
public function handle(CompositeConnectionInterface $connection, $payload)
{
$length = (int) $payload;
if ("{$length}" !== $payload) {
CommunicationException::handle(new ProtocolException($connection, "Cannot parse '{$payload}' as a valid length for a bulk response."));
}
if ($length >= 0) {
return substr($connection->readBuffer($length + 2), 0, -2);
}
if ($length == -1) {
return null;
}
CommunicationException::handle(new ProtocolException($connection, "Value '{$payload}' is not a valid length for a bulk response."));
return;
}
/**
* {@inheritdoc}
*/
public function read(CompositeConnectionInterface $connection)
{
$chunk = $connection->readLine();
$prefix = $chunk[0];
$payload = substr($chunk, 1);
switch ($prefix) {
case '+':
return new StatusResponse($payload);
case '$':
$size = (int) $payload;
if ($size === -1) {
return;
}
return substr($connection->readBuffer($size + 2), 0, -2);
case '*':
$count = (int) $payload;
if ($count === -1) {
return;
}
if ($this->mbiterable) {
return new MultiBulkIterator($connection, $count);
}
$multibulk = array();
for ($i = 0; $i < $count; ++$i) {
$multibulk[$i] = $this->read($connection);
}
return $multibulk;
case ':':
$integer = (int) $payload;
return $integer == $payload ? $integer : $payload;
case '-':
return new ErrorResponse($payload);
default:
CommunicationException::handle(new ProtocolException($connection, "Unknown response prefix: '{$prefix}' [{$connection->getParameters()}]"));
return;
}
}
