Function initFileDescriptors

src/SFML/Window/DRM/InputImpl.cpp:137–169

}

void initFileDescriptors()
{
    static bool initialized = false;
    if (initialized)
        return;

    initialized = true;

    for (int i = 0; i < 32; i++)
    {
        std::string        name("/dev/input/event");
        std::ostringstream stream;
        stream << i;
        name += stream.str();

        const int tempFD = open(name.c_str(), O_RDONLY | O_NONBLOCK);

        if (tempFD < 0)
        {
            if (errno != ENOENT)
                sf::err() << "Error opening " << name << ": " << std::strerror(errno) << std::endl;

            continue;
        }

        if (keepFileDescriptor(tempFD))
            fileDescriptors.push_back(tempFD);
        else
            close(tempFD);
    }

    std::atexit(uninitFileDescriptors);
}

std::optional<sf::Mouse::Button> toMouseButton(int code)
{