public function __construct(array $options = array())
{
if (!function_exists('socket_create')) {
throw new Rediska_Connection_Exception("Can't use socket connection: socket functions not present.");
}
parent::__construct($options);
}
public function valid()
{
if ($this->_count === null) {
$reply = $this->_connection->readLine();
if ($reply === null) {
return false;
}
$type = substr($reply, 0, 1);
$count = (int) substr($reply, 1);
if ($type == Rediska_Connection_Exec::REPLY_MULTY_BULK) {
$this->_count = $count;
} else {
throw new Rediska_Connection_Exec_Exception($reply);
}
}
return $this->_current < $this->_count;
}
/**
* Read response from connection
*
* @param Rediska_Connection $connection
* @return mixed
*/
public static function readResponseFromConnection(Rediska_Connection $connection)
{
$reply = $connection->readLine();
if ($reply === null) {
return $reply;
}
$type = substr($reply, 0, 1);
$data = substr($reply, 1);
switch ($type) {
case self::REPLY_STATUS:
if ($data == 'OK') {
return true;
} else {
return $data;
}
case self::REPLY_ERROR:
$message = substr($data, 4);
throw new Rediska_Connection_Exec_Exception($message);
case self::REPLY_INTEGER:
if (strpos($data, '.') !== false) {
$number = (int) $data;
} else {
$number = (double) $data;
}
return $number;
case self::REPLY_BULK:
if ($data == '-1') {
return null;
} else {
$length = (int) $data;
return $connection->read($length);
}
case self::REPLY_MULTY_BULK:
$count = (int) $data;
$replies = array();
for ($i = 0; $i < $count; $i++) {
$replies[] = self::readResponseFromConnection($connection);
}
return $replies;
default:
throw new Rediska_Connection_Exec_Exception("Invalid reply type: '{$type}'");
}
}
/**
* Get channels by connection
*
* @param $connection
* @return array
*/
public function getChannelsByConnection(Rediska_Connection $connection)
{
if (!isset($this->_channelsByConnections[$connection->getAlias()])) {
throw new Rediska_PubSub_Exception("Channels by this connection not present");
}
return $this->_channelsByConnections[$connection->getAlias()];
}
protected function _readResponseFromConnection(Rediska_Connection $connection)
{
$reply = $connection->readLine();
$type = substr($reply, 0, 1);
$data = substr($reply, 1);
switch ($type) {
case self::REPLY_STATUS:
if ($data == 'OK') {
return true;
} else {
return $data;
}
case self::REPLY_ERROR:
$message = substr($data, 4);
throw new Rediska_Command_Exception($message);
case self::REPLY_INTEGER:
if (strpos($data, '.') !== false) {
$number = (int) $data;
} else {
$number = (double) $data;
}
if ((string) $number != $data) {
throw new Rediska_Command_Exception("Can't convert data ':{$data}' to integer");
}
return $number;
case self::REPLY_BULK:
if ($data == '-1') {
return null;
} else {
$length = (int) $data;
if ((string) $length != $data) {
throw new Rediska_Command_Exception("Can't convert bulk reply header '\${$data}' to integer");
}
return $connection->read($length);
}
case self::REPLY_MULTY_BULK:
$count = (int) $data;
if ((string) $count != $data) {
throw new Rediska_Command_Exception("Can't convert multi-response header '{$data}' to integer");
}
$replies = array();
for ($i = 0; $i < $count; $i++) {
$replies[] = $this->_readResponseFromConnection($connection);
}
return $replies;
default:
throw new Rediska_Command_Exception("Invalid reply type: '{$type}'");
}
}