Method splitFolderSegments

src/FileRise/Domain/FolderModel.php:616–635

(string $folder, bool $allowRoot = true)

    }

    private static function splitFolderSegments(string $folder, bool $allowRoot = true): ?array
    {
        $normalized = ACL::normalizeFolder($folder);
        if ($normalized === 'root') {
            return $allowRoot ? [] : null;
        }

        $parts = explode('/', $normalized);
        if ($parts === [] || in_array('', $parts, true)) {
            return null;
        }

        foreach ($parts as $seg) {
            if (!self::isValidFolderSegment($seg)) {
                return null;
            }
        }

        return $parts;
    }

    private static function safeReal(string $baseReal, string $p): ?string
    {