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| 1 | <?php |
| 2 | /** |
| 3 | * This program is free software; you can redistribute it and/or modify |
| 4 | * it under the terms of the GNU General Public License as published by |
| 5 | * the Free Software Foundation; either version 2 of the License, or |
| 6 | * (at your option) any later version. |
| 7 | * |
| 8 | * This program is distributed in the hope that it will be useful, |
| 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 11 | * GNU General Public License for more details. |
| 12 | * |
| 13 | * You should have received a copy of the GNU General Public License along |
| 14 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 15 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| 16 | * http://www.gnu.org/copyleft/gpl.html |
| 17 | * |
| 18 | * @file |
| 19 | * @ingroup Maintenance ExternalStorage |
| 20 | */ |
| 21 | |
| 22 | use MediaWiki\Storage\SqlBlobStore; |
| 23 | use Wikimedia\Rdbms\IExpression; |
| 24 | use Wikimedia\Rdbms\IReadableDatabase; |
| 25 | use Wikimedia\Rdbms\LikeValue; |
| 26 | |
| 27 | // @codeCoverageIgnoreStart |
| 28 | require_once __DIR__ . '/moveToExternal.php'; |
| 29 | // @codeCoverageIgnoreEnd |
| 30 | |
| 31 | class FixLegacyEncoding extends MoveToExternal { |
| 32 | public function __construct() { |
| 33 | parent::__construct(); |
| 34 | $this->addDescription( 'Change encoding of stored content from legacy encoding to UTF-8' ); |
| 35 | } |
| 36 | |
| 37 | protected function getConditions( int $blockStart, int $blockEnd, IReadableDatabase $dbr ): array { |
| 38 | return [ |
| 39 | $dbr->expr( 'old_id', '>=', $blockStart ), |
| 40 | $dbr->expr( 'old_id', '<=', $blockEnd ), |
| 41 | $dbr->expr( 'old_flags', IExpression::NOT_LIKE, |
| 42 | new LikeValue( $dbr->anyString(), 'utf-8', $dbr->anyString() ) ), |
| 43 | $dbr->expr( 'old_flags', IExpression::NOT_LIKE, |
| 44 | new LikeValue( $dbr->anyString(), 'utf8', $dbr->anyString() ) ), |
| 45 | ]; |
| 46 | } |
| 47 | |
| 48 | protected function resolveText( string $text, array $flags ): array { |
| 49 | if ( in_array( 'error', $flags ) ) { |
| 50 | return [ $text, $flags ]; |
| 51 | } |
| 52 | $blobStore = $this->getServiceContainer()->getBlobStore(); |
| 53 | if ( in_array( 'external', $flags ) && $blobStore instanceof SqlBlobStore ) { |
| 54 | $newText = $blobStore->expandBlob( $text, $flags ); |
| 55 | if ( $newText === false ) { |
| 56 | return [ false, $flags ]; |
| 57 | } |
| 58 | $text = $newText; |
| 59 | // It will be put back in external storage again |
| 60 | $flags = array_diff( $flags, [ 'external' ] ); |
| 61 | } |
| 62 | if ( in_array( 'gzip', $flags ) ) { |
| 63 | $newText = gzinflate( $text ); |
| 64 | if ( $newText === false ) { |
| 65 | return [ false, $flags ]; |
| 66 | } |
| 67 | $text = $newText; |
| 68 | $flags = array_diff( $flags, [ 'gzip' ] ); |
| 69 | } |
| 70 | return [ $text, $flags ]; |
| 71 | } |
| 72 | |
| 73 | } |
| 74 | |
| 75 | // @codeCoverageIgnoreStart |
| 76 | $maintClass = FixLegacyEncoding::class; |
| 77 | require_once RUN_MAINTENANCE_IF_MAIN; |
| 78 | // @codeCoverageIgnoreEnd |