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<?php |
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/** |
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* @copyright Copyright (c) 2017, ownCloud GmbH |
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* |
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* @author Thomas Müller <[email protected]> |
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* |
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* @license AGPL-3.0 |
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* |
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* This code is free software: you can redistribute it and/or modify |
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* it under the terms of the GNU Affero General Public License, version 3, |
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* as published by the Free Software Foundation. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU Affero General Public License for more details. |
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* |
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* You should have received a copy of the GNU Affero General Public License, version 3, |
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* along with this program. If not, see <http://www.gnu.org/licenses/> |
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* |
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*/ |
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namespace OC\DB; |
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use OCP\IDBConnection; |
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/** |
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* Various MySQL specific helper functions. |
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*/ |
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class MySqlTools { |
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/** |
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* @param Connection $connection |
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* @return bool |
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*/ |
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public function supports4ByteCharset(IDBConnection $connection) { |
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$variables = ['innodb_file_per_table' => 'ON']; |
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if (!$this->isMariaDBWithLargePrefix($connection)) { |
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$variables['innodb_file_format'] = 'Barracuda'; |
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$variables['innodb_large_prefix'] = 'ON'; |
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} |
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foreach ($variables as $var => $val) { |
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$result = $connection->executeQuery("SHOW VARIABLES LIKE '$var'"); |
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$row = $result->fetch(); |
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$result->closeCursor(); |
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if ($row === false) { |
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return false; |
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} |
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if (strcasecmp($row['Value'], $val) !== 0) { |
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return false; |
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} |
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} |
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return true; |
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} |
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protected function isMariaDBWithLargePrefix(IDBConnection $connection) { |
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$result = $connection->executeQuery('SELECT VERSION()'); |
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$row = strtolower($result->fetchColumn()); |
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$result->closeCursor(); |
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if ($row === false) { |
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return false; |
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} |
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return strpos($row, 'maria') && version_compare($row, '10.3', '>=') || |
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strpos($row, 'maria') === false && version_compare($row, '8.0', '>='); |
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} |
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} |
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nextcloud /
server
