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<?php
/*
* This file is part of the Predis package.
*
* (c) Daniele Alessandri <suppakilla@gmail.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Predis\Command;
/**
* @link http://redis.io/commands/info
*
* @author Daniele Alessandri <suppakilla@gmail.com>
*/
class ServerInfo extends Command
{
/**
* {@inheritdoc}
*/
public function getId()
{
return 'INFO';
}
/**
* {@inheritdoc}
*/
public function parseResponse($data)
{
$info = array();
$infoLines = preg_split('/\r?\n/', $data);
foreach ($infoLines as $row) {
if (strpos($row, ':') === false) {
continue;
}
list($k, $v) = $this->parseRow($row);
$info[$k] = $v;
}
return $info;
}
/**
* Parses a single row of the response and returns the key-value pair.
*
* @param string $row Single row of the response.
*
* @return array
*/
protected function parseRow($row)
{
list($k, $v) = explode(':', $row, 2);
if (preg_match('/^db\d+$/', $k)) {
$v = $this->parseDatabaseStats($v);
}
return array($k, $v);
}
/**
* Extracts the statistics of each logical DB from the string buffer.
*
* @param string $str Response buffer.
*
* @return array
*/
protected function parseDatabaseStats($str)
{
$db = array();
foreach (explode(',', $str) as $dbvar) {
list($dbvk, $dbvv) = explode('=', $dbvar);
$db[trim($dbvk)] = $dbvv;
}
return $db;
}
/**
* Parses the response and extracts the allocation statistics.
*
* @param string $str Response buffer.
*
* @return array
*/
protected function parseAllocationStats($str)
{
$stats = array();
foreach (explode(',', $str) as $kv) {
@list($size, $objects, $extra) = explode('=', $kv);
// hack to prevent incorrect values when parsing the >=256 key
if (isset($extra)) {
$size = ">=$objects";
$objects = $extra;
}
$stats[$size] = $objects;
}
return $stats;
}
}