std::string DecodeEMFString(std::string chars)
{
    reverse(chars.begin(), chars.end());

    bool flippy = (chars.length() % 2) == 1;

    for (std::size_t i = 0; i < chars.length(); ++i)
    {
        byte c = chars[i];

        if (flippy)
        {
            if (c >= 0x22 && c <= 0x4F)
                c = (byte)(0x71 - c);
            else if (c >= 0x50 && c <= 0x7E)
                c = (byte)(0xCD - c);
        }
        else
        {
            if (c >= 0x22 && c <= 0x7E)
                c = (byte)(0x9F - c);
        }

        chars[i] = c;
        flippy = !flippy;
    }

    return chars;
}

std::string EncodeEMFString(std::string chars)
{
    bool flippy = (chars.length() % 2) == 1;

    for (std::size_t i = 0; i < chars.length(); ++i)
    {
        byte c = chars[i];

        if (flippy)
        {
            if (c >= 0x22 && c <= 0x4F)
                c = (byte)(0x71 - c);
            else if (c >= 0x50 && c <= 0x7E)
                c = (byte)(0xCD - c);
        }
        else
        {
            if (c >= 0x22 && c <= 0x7E)
                c = (byte)(0x9F - c);
        }

        chars[i] = c;
        flippy = !flippy;
    }

    reverse(chars.begin(), chars.end());

    return chars;
}