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<?php |
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/** |
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* Helper class for sqlite-specific scripts |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
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* (at your option) any later version. |
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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 General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License along |
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* with this program; if not, write to the Free Software Foundation, Inc., |
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
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* http://www.gnu.org/copyleft/gpl.html |
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* |
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* @file |
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* @ingroup Maintenance |
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*/ |
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/** |
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* This class contains code common to different SQLite-related maintenance scripts |
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* |
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* @ingroup Maintenance |
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*/ |
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class Sqlite { |
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/** |
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* Checks whether PHP has SQLite support |
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* @return bool |
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*/ |
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public static function isPresent() { |
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return extension_loaded( 'pdo_sqlite' ); |
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} |
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/** |
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* Checks given files for correctness of SQL syntax. MySQL DDL will be converted to |
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* SQLite-compatible during processing. |
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* Will throw exceptions on SQL errors |
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* @param array|string $files |
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* @throws MWException |
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* @return bool True if no error or error string in case of errors |
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*/ |
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public static function checkSqlSyntax( $files ) { |
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if ( !Sqlite::isPresent() ) { |
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throw new MWException( "Can't check SQL syntax: SQLite not found" ); |
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} |
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if ( !is_array( $files ) ) { |
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$files = [ $files ]; |
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} |
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$allowedTypes = array_flip( [ |
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'integer', |
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'real', |
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'text', |
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'blob', // NULL type is omitted intentionally |
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] ); |
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$db = DatabaseSqlite::newStandaloneInstance( ':memory:' ); |
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try { |
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foreach ( $files as $file ) { |
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$err = $db->sourceFile( $file ); |
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if ( $err != true ) { |
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return $err; |
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} |
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} |
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$tables = $db->query( "SELECT name FROM sqlite_master WHERE type='table'", __METHOD__ ); |
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foreach ( $tables as $table ) { |
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if ( strpos( $table->name, 'sqlite_' ) === 0 ) { |
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continue; |
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} |
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$columns = $db->query( "PRAGMA table_info({$table->name})", __METHOD__ ); |
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foreach ( $columns as $col ) { |
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if ( !isset( $allowedTypes[strtolower( $col->type )] ) ) { |
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$db->close(); |
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return "Table {$table->name} has column {$col->name} with non-native type '{$col->type}'"; |
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} |
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} |
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} |
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} catch ( DBError $e ) { |
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return $e->getMessage(); |
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} |
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$db->close(); |
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return true; |
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} |
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} |
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wikimedia /
mediawiki
