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Diffstat (limited to 'maintenance/compareParsers.php')
| -rw-r--r-- | maintenance/compareParsers.php | 142 |
1 files changed, 142 insertions, 0 deletions
diff --git a/maintenance/compareParsers.php b/maintenance/compareParsers.php new file mode 100644 index 00000000..4fe4e4d0 --- /dev/null +++ b/maintenance/compareParsers.php @@ -0,0 +1,142 @@ +<?php +/** + * Take page text out of an XML dump file and render basic HTML out to files. + * This is *NOT* suitable for publishing or offline use; it's intended for + * running comparative tests of parsing behavior using real-world data. + * + * Templates etc are pulled from the local wiki database, not from the dump. + * + * Copyright (C) 2011 Platonides - http://www.mediawiki.org/ + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * http://www.gnu.org/copyleft/gpl.html + * + * @file + * @ingroup Maintenance + */ + +require_once( dirname( __FILE__ ) . '/dumpIterator.php' ); + +class CompareParsers extends DumpIterator { + + private $count = 0; + + public function __construct() { + parent::__construct(); + $this->saveFailed = false; + $this->mDescription = "Run a file or dump with several parsers"; + $this->addOption( 'parser1', 'The first parser to compare.', true, true ); + $this->addOption( 'parser2', 'The second parser to compare.', true, true ); + $this->addOption( 'tidy', 'Run tidy on the articles.', false, false ); + $this->addOption( 'save-failed', 'Folder in which articles which differ will be stored.', false, true ); + $this->addOption( 'show-diff', 'Show a diff of the two renderings.', false, false ); + $this->addOption( 'diff-bin', 'Binary to use for diffing (can also be provided by DIFF env var).', false, false ); + $this->addOption( 'strip-parameters', 'Remove parameters of html tags to increase readability.', false, false ); + $this->addOption( 'show-parsed-output', 'Show the parsed html if both Parsers give the same output.', false, false ); + } + + public function checkOptions() { + if ( $this->hasOption('save-failed') ) { + $this->saveFailed = $this->getOption('save-failed'); + } + + $this->stripParametersEnabled = $this->hasOption( 'strip-parameters' ); + $this->showParsedOutput = $this->hasOption( 'show-parsed-output' ); + + $this->showDiff = $this->hasOption( 'show-diff' ); + if ( $this->showDiff ) { + $bin = $this->getOption( 'diff-bin', getenv( 'DIFF' ) ); + if ( $bin != '' ) { + global $wgDiff; + $wgDiff = $bin; + } + } + + $user = new User(); + $this->options = ParserOptions::newFromUser( $user ); + + if ( $this->hasOption( 'tidy' ) ) { + global $wgUseTidy; + if ( !$wgUseTidy ) { + $this->error( 'Tidy was requested but $wgUseTidy is not set in LocalSettings.php', true ); + } + $this->options->setTidy( true ); + } + + $this->failed = 0; + } + + public function conclusions() { + $this->error( "{$this->failed} failed revisions out of {$this->count}" ); + if ($this->count > 0) + $this->output( " (" . ( $this->failed / $this->count ) . "%)\n" ); + } + + function stripParameters( $text ) { + if ( !$this->stripParametersEnabled ) { + return $text; + } + return preg_replace( '/(<a) [^>]+>/', '$1>', $text ); + } + + /** + * Callback function for each revision, parse with both parsers and compare + * @param $rev Revision + */ + public function processRevision( $rev ) { + $title = $rev->getTitle(); + + $parser1Name = $this->getOption( 'parser1' ); + $parser2Name = $this->getOption( 'parser2' ); + + self::checkParserLocally( $parser1Name ); + self::checkParserLocally( $parser2Name ); + + $parser1 = new $parser1Name(); + $parser2 = new $parser2Name(); + + $output1 = $parser1->parse( $rev->getText(), $title, $this->options ); + $output2 = $parser2->parse( $rev->getText(), $title, $this->options ); + + if ( $output1->getText() != $output2->getText() ) { + $this->failed++; + $this->error( "Parsing for {$title->getPrefixedText()} differs\n" ); + + if ( $this->saveFailed ) { + file_put_contents( $this->saveFailed . '/' . rawurlencode( $title->getPrefixedText() ) . ".txt", $rev->getText()); + } + if ( $this->showDiff ) { + $this->output( wfDiff( $this->stripParameters( $output1->getText() ), $this->stripParameters( $output2->getText() ), '' ) ); + } + } else { + $this->output( $title->getPrefixedText() . "\tOK\n" ); + if ( $this->showParsedOutput ) { + $this->output( $this->stripParameters( $output1->getText() ) ); + } + } + } + + private static function checkParserLocally( $parserName ) { + /* Look for the parser in a file appropiately named in the current folder */ + if ( !class_exists( $parserName ) && file_exists( "$parserName.php" ) ) { + global $wgAutoloadClasses; + $wgAutoloadClasses[ $parserName ] = realpath( '.' ) . "/$parserName.php"; + } + } + +} + +$maintClass = "CompareParsers"; +require_once( RUN_MAINTENANCE_IF_MAIN ); |