Valkyrja\Http\Message\Factory\HeaderFactory

Complexity

Total Complexity

8

Size/Duplication

Total Lines	40
Duplicated Lines	0 %

Importance

Changes

0

1 Method

Rating	Name	Duplication	Size	Complexity
B	marshalHeaders()	0	31	8

<?php

declare(strict_types=1);

/*
 * This file is part of the Valkyrja Framework package.
 *
 * (c) Melech Mizrachi <melechmizrachi@gmail.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Valkyrja\Http\Message\Factory;

use function array_key_exists;
use function str_replace;
use function strtolower;
use function substr;

abstract class HeaderFactory
{
    /**
     * Marshal headers from $_SERVER.
     *
     * @param array<string, string> $server
     *
     * @return array<string, string[]>
     */
    public static function marshalHeaders(array $server): array
    {
        $headers = [];

        foreach ($server as $key => $value) {
            // Apache prefixes environment variables with REDIRECT_
            // if they are added by rewrite rules
            if (str_starts_with($key, 'REDIRECT_')) {
                $key = substr($key, 9);

                // We will not overwrite existing variables with the
                // prefixed versions, though
                if (array_key_exists($key, $server)) {
                    continue;
                }
            }

            if ($value && str_starts_with($key, 'HTTP_')) {
                $name           = str_replace('_', '-', strtolower(substr($key, 5)));
                $headers[$name] = [$value];

                continue;
            }

            if ($value && str_starts_with($key, 'CONTENT_')) {
                $name           = 'content-' . strtolower(substr($key, 8));
                $headers[$name] = [$value];
            }
        }

        return $headers;
    }
}