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85 lines
4.0 KiB
85 lines
4.0 KiB
<?php
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/**
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* @license MIT
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* Copyright 2017 Dustin Wilson, J. King, et al.
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* See LICENSE and AUTHORS files for details
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*/
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declare(strict_types=1);
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namespace MensBeam\HTML\DOM;
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use MensBeam\HTML\DOM\Inner\Reflection,
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MensBeam\HTML\Parser,
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MensBeam\HTML\Parser\Serializer as ParserSerializer;
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class Serializer extends ParserSerializer {
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protected static function fragmentHasHost(\DOMDocumentFragment $fragment): bool {
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/** @var InnerDocument */
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$ownerDocument = $fragment->ownerDocument;
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return (Reflection::getProtectedProperty($ownerDocument->getWrapperNode($fragment), 'host') !== null);
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}
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protected static function getTemplateContent(\DOMElement $node): \DOMNode {
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/** @var InnerDocument */
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$ownerDocument = $node->ownerDocument;
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return $ownerDocument->getWrapperNode($node)->content->innerNode;
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}
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protected static function isPreformattedContent(\DOMNode $node): bool {
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$n = $node;
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do {
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if ($n instanceof \DOMElement) {
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if (($n->namespaceURI ?? Parser::HTML_NAMESPACE) === Parser::HTML_NAMESPACE && in_array($n->tagName, self::PREFORMATTED_ELEMENTS)) {
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return true;
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}
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} elseif ($n instanceof \DOMDocumentFragment) {
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/** @var InnerDocument */
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$ownerDocument = $node->ownerDocument;
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$host = Reflection::getProtectedProperty($ownerDocument->getWrapperNode($n), 'host');
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if ($host !== null) {
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$n = $host->get()->innerNode;
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}
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}
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} while ($n = $n->parentNode);
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return false;
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}
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protected static function treatAsBlockWithTemplates(\DOMNode $node): bool {
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/** @var InnerDocument */
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$document = $node->ownerDocument;
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$xpath = $document->xpath;
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$templates = $xpath->query('.//template[namespace-uri()="" or namespace-uri()="http://www.w3.org/1999/xhtml"][not(ancestor::iframe[namespace-uri()="" or namespace-uri()="http://www.w3.org/1999/xhtml"] or ancestor::listing[namespace-uri()="" or namespace-uri()="http://www.w3.org/1999/xhtml"] or ancestor::noembed[namespace-uri()="" or namespace-uri()="http://www.w3.org/1999/xhtml"] or ancestor::noframes[namespace-uri()="" or namespace-uri()="http://www.w3.org/1999/xhtml"] or ancestor::noscript[namespace-uri()="" or namespace-uri()="http://www.w3.org/1999/xhtml"] or ancestor::plaintext[namespace-uri()="" or namespace-uri()="http://www.w3.org/1999/xhtml"] or ancestor::pre[namespace-uri()="" or namespace-uri()="http://www.w3.org/1999/xhtml"] or ancestor::style[namespace-uri()="" or namespace-uri()="http://www.w3.org/1999/xhtml"] or ancestor::script[namespace-uri()="" or namespace-uri()="http://www.w3.org/1999/xhtml"] or ancestor::textarea[namespace-uri()="" or namespace-uri()="http://www.w3.org/1999/xhtml"] or ancestor::title[namespace-uri()="" or namespace-uri()="http://www.w3.org/1999/xhtml"] or ancestor::xmp[namespace-uri()="" or namespace-uri()="http://www.w3.org/1999/xhtml"])]', $node);
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foreach ($templates as $t) {
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$content = static::getTemplateContent($t);
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$result = ($xpath->evaluate(self::BLOCK_QUERY, $content) > 0);
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if ($result || static::treatAsBlockWithTemplates($content)) {
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return true;
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}
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}
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return false;
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}
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protected static function treatForeignRootAsBlock(\DOMNode $node): bool {
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// NOTE: This method is used only when pretty printing. Implementors of userland
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// PHP DOM solutions with template contents will need to extend this method to
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// be able to moonwalk through document fragment hosts.
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$n = $node;
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do {
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if ($n->parentNode !== null && ($n->parentNode->namespaceURI ?? Parser::HTML_NAMESPACE) !== Parser::HTML_NAMESPACE) {
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continue;
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}
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if (self::treatAsBlock($n->parentNode)) {
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return true;
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}
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break;
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} while ($n = $n->parentNode);
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return false;
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}
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}
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