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| 1 | #!/usr/bin/env php |
| 2 | <?php |
| 3 | /** |
| 4 | * This program is free software; you can redistribute it and/or modify |
| 5 | * it under the terms of the GNU General Public License as published by |
| 6 | * the Free Software Foundation; either version 2 of the License, or |
| 7 | * (at your option) any later version. |
| 8 | * |
| 9 | * This program is distributed in the hope that it will be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | * GNU General Public License for more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License along |
| 15 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 16 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| 17 | * http://www.gnu.org/copyleft/gpl.html |
| 18 | * |
| 19 | * @ingroup Maintenance |
| 20 | */ |
| 21 | |
| 22 | use MediaWiki\MediaWikiServices; |
| 23 | |
| 24 | require_once __DIR__ . '/../../../maintenance/Maintenance.php'; |
| 25 | |
| 26 | class ExportMathCache extends Maintenance { |
| 27 | |
| 28 | private const ERROR_CODE_DB_ERROR = 2; |
| 29 | private const ERROR_CODE_JSON = 3; |
| 30 | |
| 31 | public function __construct() { |
| 32 | parent::__construct(); |
| 33 | $this->addDescription( 'Exports a json file that consists of the input hashes and ' . |
| 34 | 'the texvc input from the database cache.' ); |
| 35 | $this->addOption( |
| 36 | 'offset', "If set the first n equations on the table are skipped", false, true, "o" |
| 37 | ); |
| 38 | $this->addOption( |
| 39 | 'length', "If set the only n equations are exported processed", false, true, "l" |
| 40 | ); |
| 41 | $this->addOption( |
| 42 | 'sort', 'If set the result is sorted according to the input', false, false, 's' |
| 43 | ); |
| 44 | $this->requireExtension( 'MathSearch' ); |
| 45 | } |
| 46 | |
| 47 | /** |
| 48 | * @param int $offset |
| 49 | * @param int $length |
| 50 | * @param bool $sort |
| 51 | * @return array|false |
| 52 | */ |
| 53 | private static function getMathTagsFromDatabase( |
| 54 | int $offset, |
| 55 | int $length, |
| 56 | bool $sort ) { |
| 57 | $out = []; |
| 58 | $dbr = MediaWikiServices::getInstance() |
| 59 | ->getConnectionProvider() |
| 60 | ->getReplicaDatabase(); |
| 61 | $options = [ |
| 62 | 'OFFSET' => $offset, |
| 63 | 'LIMIT' => $length |
| 64 | ]; |
| 65 | if ( $sort === true ) { |
| 66 | $options['ORDER BY'] = 'math_input'; |
| 67 | } |
| 68 | $res = $dbr->select( |
| 69 | 'mathlog', |
| 70 | [ 'math_inputhash', 'math_input' ], |
| 71 | '', |
| 72 | __METHOD__, |
| 73 | $options ); |
| 74 | if ( $res === false ) { |
| 75 | return false; |
| 76 | } |
| 77 | // Convert result wrapper to array |
| 78 | foreach ( $res as $row ) { |
| 79 | $out[] = [ |
| 80 | // the binary encoded input-hash is no valid json output |
| 81 | 'inputhash' => MathObject::hash2md5( $row->math_inputhash ), |
| 82 | 'input' => $row->math_input |
| 83 | ]; |
| 84 | } |
| 85 | return $out; |
| 86 | } |
| 87 | |
| 88 | public function execute() { |
| 89 | $offset = $this->getOption( 'offset', 0 ); |
| 90 | $length = $this->getOption( 'length', PHP_INT_MAX ); |
| 91 | $sort = $this->hasOption( 'sort' ); |
| 92 | $allEquations = self::getMathTagsFromDatabase( $offset, $length, $sort ); |
| 93 | if ( !is_array( $allEquations ) ) { |
| 94 | $this->error( "Could not get equations from table 'mathlog'", |
| 95 | self::ERROR_CODE_DB_ERROR ); |
| 96 | } |
| 97 | $out = FormatJson::encode( $allEquations, true ); |
| 98 | if ( $out === false ) { |
| 99 | $this->error( "Could not encode result as json string 'mathlog'", |
| 100 | self::ERROR_CODE_JSON ); |
| 101 | } |
| 102 | $this->output( "$out\n" ); |
| 103 | } |
| 104 | } |
| 105 | |
| 106 | $maintClass = ExportMathCache::class; |
| 107 | require_once RUN_MAINTENANCE_IF_MAIN; |