protected function RssResponseRelativeUrlFilter::transformRootRelativeUrlsToAbsolute in Drupal 9

Same name and namespace in other branches

1. 8 core/lib/Drupal/Core/EventSubscriber/RssResponseRelativeUrlFilter.php \Drupal\Core\EventSubscriber\RssResponseRelativeUrlFilter::transformRootRelativeUrlsToAbsolute()

Converts all root-relative URLs to absolute URLs in RSS markup.

Does not change any existing protocol-relative or absolute URLs.

Parameters

string $rss_markup: The RSS markup to update.

\Symfony\Component\HttpFoundation\Request $request: The current request.

Return value

string The updated RSS markup.

1 call to RssResponseRelativeUrlFilter::transformRootRelativeUrlsToAbsolute()

RssResponseRelativeUrlFilter::onResponse in core/lib/Drupal/Core/EventSubscriber/RssResponseRelativeUrlFilter.php

Converts relative URLs to absolute URLs.

File

core/lib/Drupal/Core/EventSubscriber/RssResponseRelativeUrlFilter.php, line 45

Class

RssResponseRelativeUrlFilter

Subscribes to filter RSS responses, to make relative URIs absolute.

Namespace

Drupal\Core\EventSubscriber

Code

protected function transformRootRelativeUrlsToAbsolute($rss_markup, Request $request) {
  $rss_dom = new \DOMDocument();

  // Load the RSS, if there are parsing errors, abort and return the unchanged
  // markup.
  $previous_value = libxml_use_internal_errors(TRUE);
  $rss_dom
    ->loadXML($rss_markup);
  $errors = libxml_get_errors();
  libxml_use_internal_errors($previous_value);
  if ($errors) {
    return $rss_markup;
  }

  // Invoke Html::transformRootRelativeUrlsToAbsolute() on all HTML content
  // embedded in this RSS feed.
  foreach ($rss_dom
    ->getElementsByTagName('description') as $node) {
    $html_markup = $node->nodeValue;
    if (!empty($html_markup)) {
      $node->nodeValue = Html::transformRootRelativeUrlsToAbsolute($html_markup, $request
        ->getSchemeAndHttpHost());
    }
  }
  return $rss_dom
    ->saveXML();
}