mirror of
https://github.com/nextcloud/server.git
synced 2024-12-29 00:18:42 +00:00
52 lines
1.2 KiB
PHP
52 lines
1.2 KiB
PHP
<?php
|
|
/**
|
|
* SPDX-FileCopyrightText: 2017 ownCloud GmbH
|
|
* SPDX-License-Identifier: AGPL-3.0-only
|
|
*/
|
|
namespace OC\DB;
|
|
|
|
use OCP\IDBConnection;
|
|
|
|
/**
|
|
* Various MySQL specific helper functions.
|
|
*/
|
|
class MySqlTools {
|
|
/**
|
|
* @param IDBConnection $connection
|
|
* @return bool
|
|
*/
|
|
public function supports4ByteCharset(IDBConnection $connection) {
|
|
$variables = ['innodb_file_per_table' => 'ON'];
|
|
if (!$this->isMariaDBWithLargePrefix($connection)) {
|
|
$variables['innodb_file_format'] = 'Barracuda';
|
|
$variables['innodb_large_prefix'] = 'ON';
|
|
}
|
|
|
|
foreach ($variables as $var => $val) {
|
|
$result = $connection->executeQuery("SHOW VARIABLES LIKE '$var'");
|
|
$row = $result->fetch();
|
|
$result->closeCursor();
|
|
if ($row === false) {
|
|
return false;
|
|
}
|
|
if (strcasecmp($row['Value'], $val) !== 0) {
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
protected function isMariaDBWithLargePrefix(IDBConnection $connection) {
|
|
$result = $connection->executeQuery('SELECT VERSION()');
|
|
$row = strtolower($result->fetchColumn());
|
|
$result->closeCursor();
|
|
|
|
if ($row === false) {
|
|
return false;
|
|
}
|
|
|
|
return str_contains($row, 'maria') && version_compare($row, '10.3', '>=') ||
|
|
!str_contains($row, 'maria') && version_compare($row, '8.0', '>=');
|
|
}
|
|
}
|