Function upOneLevel

src/OpenLoco/src/Ui/Windows/PromptBrowseWindow.cpp:815–833

0x00446E2F

    // 0x00446E2F
    static void upOneLevel()
    {
#ifdef _WIN32
        // Showing drive letters?
        if (_currentDirectory.empty())
        {
            return;
        }

        // The drive letter level is above file system root level.
        if (isRootPath(_currentDirectory))
        {
            _currentDirectory.clear();
            refreshDirectoryList();
        }
#endif
        // Going up one level (compensating for trailing slashes).
        changeDirectory(_currentDirectory.parent_path().parent_path());
    }

    // 0x00446E62
    static void changeDirectory(const fs::path& newDir)