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<?php
/*
* This file is part of the Predis package.
*
* (c) 2009-2020 Daniele Alessandri
* (c) 2021-2023 Till Krüss
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Predis\Command\Redis;
use Predis\Command\Command as RedisCommand;
/**
* @see http://redis.io/commands/info
*/
class INFO extends RedisCommand
{
/**
* {@inheritdoc}
*/
public function getId()
{
return 'INFO';
}
/**
* {@inheritdoc}
*/
public function parseResponse($data)
{
if (empty($data) || !$lines = preg_split('/\r?\n/', $data)) {
return [];
}
if (strpos($lines[0], '#') === 0) {
return $this->parseNewResponseFormat($lines);
} else {
return $this->parseOldResponseFormat($lines);
}
}
/**
* {@inheritdoc}
*/
public function parseNewResponseFormat($lines)
{
$info = [];
$current = null;
foreach ($lines as $row) {
if ($row === '') {
continue;
}
if (preg_match('/^# (\w+)$/', $row, $matches)) {
$info[$matches[1]] = [];
$current = &$info[$matches[1]];
continue;
}
[$k, $v] = $this->parseRow($row);
$current[$k] = $v;
}
return $info;
}
/**
* {@inheritdoc}
*/
public function parseOldResponseFormat($lines)
{
$info = [];
foreach ($lines as $row) {
if (strpos($row, ':') === false) {
continue;
}
[$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)
{
if (preg_match('/^module:name/', $row)) {
return $this->parseModuleRow($row);
}
[$k, $v] = explode(':', $row, 2);
if (preg_match('/^db\d+$/', $k)) {
$v = $this->parseDatabaseStats($v);
}
return [$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 = [];
foreach (explode(',', $str) as $dbvar) {
[$dbvk, $dbvv] = explode('=', $dbvar);
$db[trim($dbvk)] = $dbvv;
}
return $db;
}
/**
* Parsing module rows because of different format.
*
* @param string $row
* @return array
*/
protected function parseModuleRow(string $row): array
{
[$moduleKeyword, $moduleData] = explode(':', $row);
$explodedData = explode(',', $moduleData);
$parsedData = [];
foreach ($explodedData as $moduleDataRow) {
[$k, $v] = explode('=', $moduleDataRow);
if ($k === 'name') {
$parsedData[0] = $v;
continue;
}
$parsedData[1][$k] = $v;
}
return $parsedData;
}
}