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| 1 | <?php |
| 2 | /** |
| 3 | * Take page text out of an XML dump file and render basic HTML out to files. |
| 4 | * This is *NOT* suitable for publishing or offline use; it's intended for |
| 5 | * running comparative tests of parsing behavior using real-world data. |
| 6 | * |
| 7 | * Templates etc are pulled from the local wiki database, not from the dump. |
| 8 | * |
| 9 | * Copyright © 2011 Platonides |
| 10 | * https://www.mediawiki.org/ |
| 11 | * |
| 12 | * @license GPL-2.0-or-later |
| 13 | * @file |
| 14 | * @ingroup Maintenance |
| 15 | */ |
| 16 | |
| 17 | use MediaWiki\Content\WikitextContent; |
| 18 | use MediaWiki\Parser\ParserOptions; |
| 19 | use MediaWiki\User\User; |
| 20 | use Wikimedia\Diff\Diff; |
| 21 | use Wikimedia\Diff\UnifiedDiffFormatter; |
| 22 | |
| 23 | // @codeCoverageIgnoreStart |
| 24 | require_once __DIR__ . '/dumpIterator.php'; |
| 25 | // @codeCoverageIgnoreEnd |
| 26 | |
| 27 | /** |
| 28 | * Maintenance script to take page text out of an XML dump file and render |
| 29 | * basic HTML out to files. |
| 30 | * |
| 31 | * @ingroup Maintenance |
| 32 | */ |
| 33 | class CompareParsers extends DumpIterator { |
| 34 | |
| 35 | /** @var int */ |
| 36 | private $count = 0; |
| 37 | /** @var string|false */ |
| 38 | private $saveFailed = false; |
| 39 | /** @var bool */ |
| 40 | private $stripParametersEnabled; |
| 41 | /** @var bool */ |
| 42 | private $showParsedOutput; |
| 43 | /** @var bool */ |
| 44 | private $showDiff; |
| 45 | /** @var ParserOptions */ |
| 46 | private $options; |
| 47 | /** @var int */ |
| 48 | private $failed; |
| 49 | |
| 50 | public function __construct() { |
| 51 | parent::__construct(); |
| 52 | $this->addDescription( 'Run a file or dump with several parsers' ); |
| 53 | $this->addOption( 'parser1', 'The first parser to compare.', true, true ); |
| 54 | $this->addOption( 'parser2', 'The second parser to compare.', true, true ); |
| 55 | $this->addOption( |
| 56 | 'save-failed', |
| 57 | 'Folder in which articles which differ will be stored.', |
| 58 | false, |
| 59 | true |
| 60 | ); |
| 61 | $this->addOption( 'show-diff', 'Show a diff of the two renderings.', false, false ); |
| 62 | $this->addOption( |
| 63 | 'diff-bin', |
| 64 | 'Binary to use for diffing (can also be provided by DIFF env var).', |
| 65 | false, |
| 66 | false |
| 67 | ); |
| 68 | $this->addOption( |
| 69 | 'strip-parameters', |
| 70 | 'Remove parameters of html tags to increase readability.', |
| 71 | false, |
| 72 | false |
| 73 | ); |
| 74 | $this->addOption( |
| 75 | 'show-parsed-output', |
| 76 | 'Show the parsed html if both Parsers give the same output.', |
| 77 | false, |
| 78 | false |
| 79 | ); |
| 80 | } |
| 81 | |
| 82 | public function checkOptions() { |
| 83 | if ( $this->hasOption( 'save-failed' ) ) { |
| 84 | $this->saveFailed = $this->getOption( 'save-failed' ); |
| 85 | } |
| 86 | |
| 87 | $this->stripParametersEnabled = $this->hasOption( 'strip-parameters' ); |
| 88 | $this->showParsedOutput = $this->hasOption( 'show-parsed-output' ); |
| 89 | |
| 90 | $this->showDiff = $this->hasOption( 'show-diff' ); |
| 91 | if ( $this->showDiff ) { |
| 92 | $bin = $this->getOption( 'diff-bin', getenv( 'DIFF' ) ); |
| 93 | if ( $bin != '' ) { |
| 94 | global $wgDiff; |
| 95 | $wgDiff = $bin; |
| 96 | } |
| 97 | } |
| 98 | |
| 99 | $user = new User(); |
| 100 | $this->options = ParserOptions::newFromUser( $user ); |
| 101 | |
| 102 | $this->failed = 0; |
| 103 | } |
| 104 | |
| 105 | public function conclusions() { |
| 106 | $this->error( "{$this->failed} failed revisions out of {$this->count}" ); |
| 107 | if ( $this->count > 0 ) { |
| 108 | $this->output( " (" . ( $this->failed / $this->count ) . "%)\n" ); |
| 109 | } |
| 110 | } |
| 111 | |
| 112 | private function stripParameters( string $text ): string { |
| 113 | if ( !$this->stripParametersEnabled ) { |
| 114 | return $text; |
| 115 | } |
| 116 | |
| 117 | return preg_replace( '/(<a) [^>]+>/', '$1>', $text ); |
| 118 | } |
| 119 | |
| 120 | /** |
| 121 | * Callback function for each revision, parse with both parsers and compare |
| 122 | */ |
| 123 | public function processRevision( WikiRevision $rev ) { |
| 124 | $title = $rev->getTitle(); |
| 125 | |
| 126 | $parser1Name = $this->getOption( 'parser1' ); |
| 127 | $parser2Name = $this->getOption( 'parser2' ); |
| 128 | |
| 129 | self::checkParserLocally( $parser1Name ); |
| 130 | self::checkParserLocally( $parser2Name ); |
| 131 | |
| 132 | $parser1 = new $parser1Name(); |
| 133 | $parser2 = new $parser2Name(); |
| 134 | |
| 135 | $content = $rev->getContent(); |
| 136 | |
| 137 | if ( $content->getModel() !== CONTENT_MODEL_WIKITEXT ) { |
| 138 | $this->error( "Page {$title->getPrefixedText()} does not contain wikitext " |
| 139 | . "but {$content->getModel()}\n" ); |
| 140 | |
| 141 | return; |
| 142 | } |
| 143 | |
| 144 | /** @var WikitextContent $content */ |
| 145 | '@phan-var WikitextContent $content'; |
| 146 | $text = strval( $content->getText() ); |
| 147 | |
| 148 | $output1 = $parser1->parse( $text, $title, $this->options ); |
| 149 | $output2 = $parser2->parse( $text, $title, $this->options ); |
| 150 | |
| 151 | if ( $output1->getText() != $output2->getText() ) { |
| 152 | $this->failed++; |
| 153 | $this->error( "Parsing for {$title->getPrefixedText()} differs\n" ); |
| 154 | |
| 155 | if ( $this->saveFailed ) { |
| 156 | file_put_contents( |
| 157 | $this->saveFailed . '/' . rawurlencode( $title->getPrefixedText() ) . ".txt", |
| 158 | $text |
| 159 | ); |
| 160 | } |
| 161 | if ( $this->showDiff ) { |
| 162 | $diffs = new Diff( |
| 163 | explode( "\n", $this->stripParameters( $output1->getText() ) ), |
| 164 | explode( "\n", $this->stripParameters( $output2->getText() ) ) |
| 165 | ); |
| 166 | $formatter = new UnifiedDiffFormatter(); |
| 167 | $unifiedDiff = $formatter->format( $diffs ); |
| 168 | |
| 169 | $this->output( $unifiedDiff ); |
| 170 | } |
| 171 | } else { |
| 172 | $this->output( $title->getPrefixedText() . "\tOK\n" ); |
| 173 | |
| 174 | if ( $this->showParsedOutput ) { |
| 175 | $this->output( $this->stripParameters( $output1->getText() ) ); |
| 176 | } |
| 177 | } |
| 178 | } |
| 179 | |
| 180 | private static function checkParserLocally( string $parserName ) { |
| 181 | /* Look for the parser in a file appropriately named in the current folder */ |
| 182 | if ( !class_exists( $parserName ) && file_exists( "$parserName.php" ) ) { |
| 183 | global $wgAutoloadClasses; |
| 184 | $wgAutoloadClasses[$parserName] = realpath( '.' ) . "/$parserName.php"; |
| 185 | } |
| 186 | } |
| 187 | } |
| 188 | |
| 189 | // @codeCoverageIgnoreStart |
| 190 | $maintClass = CompareParsers::class; |
| 191 | require_once RUN_MAINTENANCE_IF_MAIN; |
| 192 | // @codeCoverageIgnoreEnd |