3 * Helper class for sqlite-specific scripts
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License along
16 * with this program; if not, write to the Free Software Foundation, Inc.,
17 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
18 * http://www.gnu.org/copyleft/gpl.html
21 * @ingroup Maintenance
25 * This class contains code common to different SQLite-related maintenance scripts
27 * @ingroup Maintenance
32 * Checks whether PHP has SQLite support
35 public static function isPresent() {
36 return extension_loaded( 'pdo_sqlite' );
40 * Checks given files for correctness of SQL syntax. MySQL DDL will be converted to
41 * SQLite-compatible during processing.
42 * Will throw exceptions on SQL errors
43 * @param array|string $files
45 * @return string|bool true if no error or error string in case of errors
47 public static function checkSqlSyntax( $files ) {
48 if ( !Sqlite::isPresent() ) {
49 throw new MWException( "Can't check SQL syntax: SQLite not found" );
51 if ( !is_array( $files ) ) {
52 $files = array( $files );
55 $allowedTypes = array_flip( array(
59 'blob', // NULL type is omitted intentionally
62 $db = new DatabaseSqliteStandalone( ':memory:' );
64 foreach ( $files as $file ) {
65 $err = $db->sourceFile( $file );
71 $tables = $db->query( "SELECT name FROM sqlite_master WHERE type='table'", __METHOD__ );
72 foreach ( $tables as $table ) {
73 if ( strpos( $table->name, 'sqlite_' ) === 0 ) {
77 $columns = $db->query( "PRAGMA table_info({$table->name})", __METHOD__ );
78 foreach ( $columns as $col ) {
79 if ( !isset( $allowedTypes[strtolower( $col->type )] ) ) {
82 return "Table {$table->name} has column {$col->name} with non-native type '{$col->type}'";
86 } catch ( DBError $e ) {
87 return $e->getMessage();