UrlHelper.php

<?php


/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * 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;
use Symfony\Component\Routing\RequestContextAwareInterface;

/**
 * A helper service for manipulating URLs within and outside the request scope.
 *
 * @author Valentin Udaltsov <udaltsov.valentin@gmail.com>
 */
final class UrlHelper {
    public function __construct(RequestStack $requestStack, RequestContextAwareInterface|RequestContext|null $requestContext = null) {
    }
    public function getAbsoluteUrl(string $path) : string {
        if (str_contains($path, '://') || str_starts_with($path, '//')) {
            return $path;
        }
        if (null === ($request = $this->requestStack
            ->getMainRequest())) {
            return $this->getAbsoluteUrlFromContext($path);
        }
        if ('#' === $path[0]) {
            $path = $request->getRequestUri() . $path;
        }
        elseif ('?' === $path[0]) {
            $path = $request->getPathInfo() . $path;
        }
        if (!$path || '/' !== $path[0]) {
            $prefix = $request->getPathInfo();
            $last = \strlen($prefix) - 1;
            if ($last !== ($pos = strrpos($prefix, '/'))) {
                $prefix = substr($prefix, 0, $pos) . '/';
            }
            return $request->getUriForPath($prefix . $path);
        }
        return $request->getSchemeAndHttpHost() . $path;
    }
    public function getRelativePath(string $path) : string {
        if (str_contains($path, '://') || str_starts_with($path, '//')) {
            return $path;
        }
        if (null === ($request = $this->requestStack
            ->getMainRequest())) {
            return $path;
        }
        return $request->getRelativeUriForPath($path);
    }
    private function getAbsoluteUrlFromContext(string $path) : string {
        if (null === ($context = $this->requestContext)) {
            return $path;
        }
        if ($context instanceof RequestContextAwareInterface) {
            $context = $context->getContext();
        }
        if ('' === ($host = $context->getHost())) {
            return $path;
        }
        $scheme = $context->getScheme();
        $port = '';
        if ('http' === $scheme && 80 !== $context->getHttpPort()) {
            $port = ':' . $context->getHttpPort();
        }
        elseif ('https' === $scheme && 443 !== $context->getHttpsPort()) {
            $port = ':' . $context->getHttpsPort();
        }
        if ('#' === $path[0]) {
            $queryString = $context->getQueryString();
            $path = $context->getPathInfo() . ($queryString ? '?' . $queryString : '') . $path;
        }
        elseif ('?' === $path[0]) {
            $path = $context->getPathInfo() . $path;
        }
        if ('/' !== $path[0]) {
            $path = rtrim($context->getBaseUrl(), '/') . '/' . $path;
        }
        return $scheme . '://' . $host . $port . $path;
    }

}