function FileUrlGenerator::transformRelative

Same name in other branches
  1. 9 core/lib/Drupal/Core/File/FileUrlGenerator.php \Drupal\Core\File\FileUrlGenerator::transformRelative()
  2. 10 core/lib/Drupal/Core/File/FileUrlGenerator.php \Drupal\Core\File\FileUrlGenerator::transformRelative()

Overrides FileUrlGeneratorInterface::transformRelative

2 calls to FileUrlGenerator::transformRelative()
FileUrlGenerator::doGenerateString in core/lib/Drupal/Core/File/FileUrlGenerator.php
Creates an absolute web-accessible URL string.
FileUrlGenerator::generate in core/lib/Drupal/Core/File/FileUrlGenerator.php
Creates a root-relative web-accessible URL object.

File

core/lib/Drupal/Core/File/FileUrlGenerator.php, line 208

Class

FileUrlGenerator
Default implementation for the file URL generator service.

Namespace

Drupal\Core\File

Code

public function transformRelative(string $file_url, bool $root_relative = TRUE) : string {
    // Unfortunately, we pretty much have to duplicate Symfony's
    // Request::getHttpHost() method because Request::getPort() may return NULL
    // instead of a port number.
    $request = $this->requestStack
        ->getCurrentRequest();
    $host = $request->getHost();
    $port = $request->getPort() ?: 80;
    // Files may be accessible on a different port than the web request.
    $file_url_port = parse_url($file_url, PHP_URL_PORT) ?? $port;
    if ($file_url_port != $port) {
        return $file_url;
    }
    // If this should not be a root-relative path but relative to the drupal
    // base path, add it to the host to be removed from the URL as well.
    $base_path = !$root_relative ? $request->getBasePath() : '';
    $host = preg_quote($host, '@');
    $port = preg_quote($port, '@');
    $base_path = preg_quote($base_path, '@');
    return preg_replace("@^https?://{$host}(:{$port})?{$base_path}(\$|/)@", '/', $file_url);
}

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