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| <?php | |
| declare( strict_types = 1 ); | |
| namespace Wikimedia\Parsoid\Html2Wt\DOMHandlers; | |
| use Wikimedia\Parsoid\DOM\Element; | |
| use Wikimedia\Parsoid\DOM\Node; | |
| use Wikimedia\Parsoid\Html2Wt\SerializerState; | |
| use Wikimedia\Parsoid\Utils\DOMUtils; | |
| class QuoteHandler extends DOMHandler { | |
| /** @var string Quote sequence to match as opener/closer */ | |
| public $quotes; | |
| /** | |
| * @param string $quotes Quote sequence to match as opener/closer | |
| */ | |
| public function __construct( string $quotes ) { | |
| parent::__construct( false ); | |
| $this->quotes = $quotes; | |
| } | |
| /** @inheritDoc */ | |
| public function handle( | |
| Element $node, SerializerState $state, bool $wrapperUnmodified = false | |
| ): ?Node { | |
| if ( $this->precedingQuoteEltRequiresEscape( $node ) ) { | |
| $state->emitChunk( '<nowiki/>', $node ); | |
| } | |
| $state->emitChunk( $this->quotes, $node ); | |
| if ( $node->hasChildNodes() ) { | |
| $state->serializeChildren( $node ); | |
| } else { | |
| // Empty nodes like <i></i> or <b></b> need | |
| // a <nowiki/> in place of the empty content so that | |
| // they parse back identically. | |
| $state->emitChunk( '<nowiki/>', $node ); | |
| } | |
| $state->emitChunk( $this->quotes, $node ); | |
| return $node->nextSibling; | |
| } | |
| /** | |
| * @param Element $node | |
| * @return bool | |
| */ | |
| private function precedingQuoteEltRequiresEscape( | |
| Element $node | |
| ): bool { | |
| // * <i> and <b> siblings don't need a <nowiki/> separation | |
| // as long as quote chars in text nodes are always | |
| // properly escaped -- which they are right now. | |
| // | |
| // * Adjacent quote siblings need a <nowiki/> separation | |
| // between them if either of them will individually | |
| // generate a sequence of quotes 4 or longer. That can | |
| // only happen when either prev or node is of the form: | |
| // <i><b>...</b></i> | |
| // | |
| // For new/edited DOMs, this can never happen because | |
| // wts.minimizeQuoteTags.js does quote tag minimization. | |
| // | |
| // For DOMs from existing wikitext, this can only happen | |
| // because of auto-inserted end/start tags. (Ex: ''a''' b ''c''') | |
| $prev = DOMUtils::previousNonDeletedSibling( $node ); | |
| return $prev && DOMUtils::isQuoteElt( $prev ) | |
| && ( DOMUtils::isQuoteElt( DOMUtils::lastNonDeletedChild( $prev ) ) | |
| || DOMUtils::isQuoteElt( DOMUtils::firstNonDeletedChild( $node ) ) ); | |
| } | |
| } |