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| 1 | <?php |
| 2 | |
| 3 | namespace MediaWiki\OutputTransform\Stages; |
| 4 | |
| 5 | use MediaWiki\Html\HtmlHelper; |
| 6 | use MediaWiki\OutputTransform\ContentTextTransformStage; |
| 7 | use MediaWiki\Parser\Parser; |
| 8 | use MediaWiki\Parser\ParserOutput; |
| 9 | use MediaWiki\Parser\Parsoid\ParsoidParser; |
| 10 | use ParserOptions; |
| 11 | use Psr\Log\LoggerInterface; |
| 12 | use Wikimedia\RemexHtml\Serializer\SerializerNode; |
| 13 | |
| 14 | /** |
| 15 | * Applies base href, and strip everything but the <body> |
| 16 | * @internal |
| 17 | */ |
| 18 | class ExtractBody extends ContentTextTransformStage { |
| 19 | |
| 20 | private LoggerInterface $logger; |
| 21 | |
| 22 | public function __construct( LoggerInterface $logger ) { |
| 23 | $this->logger = $logger; |
| 24 | } |
| 25 | |
| 26 | public function shouldRun( ParserOutput $po, ?ParserOptions $popts, array $options = [] ): bool { |
| 27 | return ( $options['isParsoidContent'] ?? false ); |
| 28 | } |
| 29 | |
| 30 | private const EXPAND_ELEMENTS = [ |
| 31 | 'a' => true, 'img' => true, 'video' => true, 'audio' => true, |
| 32 | ]; |
| 33 | |
| 34 | private static function expandRelativeAttrs( string $text, string $baseHref, string $pageFragmentPrefix ): string { |
| 35 | // T350952: Expand relative links |
| 36 | // What we should be doing here is parsing as a title and then |
| 37 | // using Title::getLocalURL() |
| 38 | return HtmlHelper::modifyElements( |
| 39 | $text, |
| 40 | static function ( SerializerNode $node ): bool { |
| 41 | if ( !isset( self::EXPAND_ELEMENTS[$node->name] ) ) { |
| 42 | return false; |
| 43 | } |
| 44 | $attr = $node->name === 'a' ? 'href' : 'resource'; |
| 45 | return str_starts_with( $node->attrs[$attr] ?? '', './' ); |
| 46 | }, |
| 47 | static function ( SerializerNode $node ) use ( $baseHref, $pageFragmentPrefix ): SerializerNode { |
| 48 | $attr = $node->name === 'a' ? 'href' : 'resource'; |
| 49 | $href = $node->attrs[$attr]; |
| 50 | // Convert page fragment urls to true fragment urls |
| 51 | // This ensures that those fragments include any URL query params |
| 52 | // and resolve internally. (Ex: on pages with ?useparsoid=1, |
| 53 | // cite link fragments should not take you to a different page). |
| 54 | if ( $pageFragmentPrefix && str_starts_with( $href, $pageFragmentPrefix ) ) { |
| 55 | $node->attrs[$attr] = substr( $href, strlen( $pageFragmentPrefix ) - 1 ); |
| 56 | } else { |
| 57 | $href = $baseHref . $href; |
| 58 | $node->attrs[$attr] = wfExpandUrl( $href, PROTO_RELATIVE ); |
| 59 | } |
| 60 | return $node; |
| 61 | } |
| 62 | ); |
| 63 | } |
| 64 | |
| 65 | protected function transformText( string $text, ParserOutput $po, ?ParserOptions $popts, array &$options ): string { |
| 66 | // T350952: temporary fix for subpage paths: use Parsoid's |
| 67 | // <base href> to expand relative links |
| 68 | $baseHref = ''; |
| 69 | if ( preg_match( '{<base href=["\']([^"\']+)["\'][^>]+>}', $text, $matches ) === 1 ) { |
| 70 | $baseHref = $matches[1]; |
| 71 | } |
| 72 | $title = $po->getExtensionData( ParsoidParser::PARSOID_TITLE_KEY ); |
| 73 | if ( !$title ) { |
| 74 | // We don't think this should ever trigger, but being conservative |
| 75 | $this->logger->error( __METHOD__ . ": Missing title information in ParserOutput" ); |
| 76 | } |
| 77 | $pageFragmentPrefix = "./" . $title . "#"; |
| 78 | foreach ( $po->getIndicators() as $name => $html ) { |
| 79 | $po->setIndicator( $name, self::expandRelativeAttrs( $html, $baseHref, $pageFragmentPrefix ) ); |
| 80 | } |
| 81 | $text = Parser::extractBody( $text ); |
| 82 | return self::expandRelativeAttrs( $text, $baseHref, $pageFragmentPrefix ); |
| 83 | } |
| 84 | } |