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    <h3>Editing: UrlHelper.php</h3>
    <textarea name="content" rows="20" cols="80">&lt;?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier &lt;fabien@symfony.com&gt;
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\HttpFoundation;

use Symfony\Component\Routing\RequestContext;

/**
 * A helper service for manipulating URLs within and outside the request scope.
 *
 * @author Valentin Udaltsov &lt;udaltsov.valentin@gmail.com&gt;
 */
final class UrlHelper
{
    private RequestStack $requestStack;
    private ?RequestContext $requestContext;

    public function __construct(RequestStack $requestStack, RequestContext $requestContext = null)
    {
        $this-&gt;requestStack = $requestStack;
        $this-&gt;requestContext = $requestContext;
    }

    public function getAbsoluteUrl(string $path): string
    {
        if (str_contains($path, '://') || str_starts_with($path, '//')) {
            return $path;
        }

        if (null === $request = $this-&gt;requestStack-&gt;getMainRequest()) {
            return $this-&gt;getAbsoluteUrlFromContext($path);
        }

        if ('#' === $path[0]) {
            $path = $request-&gt;getRequestUri().$path;
        } elseif ('?' === $path[0]) {
            $path = $request-&gt;getPathInfo().$path;
        }

        if (!$path || '/' !== $path[0]) {
            $prefix = $request-&gt;getPathInfo();
            $last = \strlen($prefix) - 1;
            if ($last !== $pos = strrpos($prefix, '/')) {
                $prefix = substr($prefix, 0, $pos).'/';
            }

            return $request-&gt;getUriForPath($prefix.$path);
        }

        return $request-&gt;getSchemeAndHttpHost().$path;
    }

    public function getRelativePath(string $path): string
    {
        if (str_contains($path, '://') || str_starts_with($path, '//')) {
            return $path;
        }

        if (null === $request = $this-&gt;requestStack-&gt;getMainRequest()) {
            return $path;
        }

        return $request-&gt;getRelativeUriForPath($path);
    }

    private function getAbsoluteUrlFromContext(string $path): string
    {
        if (null === $this-&gt;requestContext || '' === $host = $this-&gt;requestContext-&gt;getHost()) {
            return $path;
        }

        $scheme = $this-&gt;requestContext-&gt;getScheme();
        $port = '';

        if ('http' === $scheme &amp;&amp; 80 !== $this-&gt;requestContext-&gt;getHttpPort()) {
            $port = ':'.$this-&gt;requestContext-&gt;getHttpPort();
        } elseif ('https' === $scheme &amp;&amp; 443 !== $this-&gt;requestContext-&gt;getHttpsPort()) {
            $port = ':'.$this-&gt;requestContext-&gt;getHttpsPort();
        }

        if ('#' === $path[0]) {
            $queryString = $this-&gt;requestContext-&gt;getQueryString();
            $path = $this-&gt;requestContext-&gt;getPathInfo().($queryString ? '?'.$queryString : '').$path;
        } elseif ('?' === $path[0]) {
            $path = $this-&gt;requestContext-&gt;getPathInfo().$path;
        }

        if ('/' !== $path[0]) {
            $path = rtrim($this-&gt;requestContext-&gt;getBaseUrl(), '/').'/'.$path;
        }

        return $scheme.'://'.$host.$port.$path;
    }
}
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