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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 | * @ingroup Maintenance |
| 19 | */ |
| 20 | |
| 21 | use MediaWiki\Extension\Math\MathRenderer; |
| 22 | |
| 23 | /** |
| 24 | * Simple dump output filter to exclude all talk pages. |
| 25 | * |
| 26 | * @ingroup Dump |
| 27 | */ |
| 28 | class MathMLFilter extends DumpFilter { |
| 29 | |
| 30 | /** |
| 31 | * @param BackupDumper $backupDumper |
| 32 | */ |
| 33 | public static function register( $backupDumper ) { |
| 34 | $backupDumper->registerFilter( 'mathml', 'MathMLFilter' ); |
| 35 | } |
| 36 | |
| 37 | /** |
| 38 | * Callback function that replaces TeX by MathML |
| 39 | * |
| 40 | * @param array $match |
| 41 | * |
| 42 | * @return string |
| 43 | */ |
| 44 | private static function renderMath( $match ) { |
| 45 | $formula = $match[1]; |
| 46 | $renderer = MathRenderer::getRenderer( $formula, [], 'latexml' ); |
| 47 | $renderer->render(); |
| 48 | // TODO: check if there is a MediaWiki function for that |
| 49 | return htmlspecialchars( $renderer->getMathml() ); |
| 50 | } |
| 51 | |
| 52 | /** |
| 53 | * Replaces the math tags with rendered MathML |
| 54 | * |
| 55 | * @param string $pText |
| 56 | * |
| 57 | * @return string |
| 58 | */ |
| 59 | private static function replaceMath( $pText ) { |
| 60 | $pText = Sanitizer::removeHTMLcomments( $pText ); |
| 61 | return preg_replace_callback( '#<math>(.*?)</math>#s', 'self::renderMath', |
| 62 | $pText ); |
| 63 | } |
| 64 | |
| 65 | /** |
| 66 | * @param stdClass $rev |
| 67 | * @param string $string the revision text |
| 68 | */ |
| 69 | function writeRevision( $rev, $string ) { |
| 70 | if ( $this->sendingThisPage ) { |
| 71 | $string = $this->replaceMath( $string ); |
| 72 | $this->sink->writeRevision( $rev, $string ); |
| 73 | } |
| 74 | } |
| 75 | |
| 76 | } |