pub fn enable_raw_mode() -> libc::termios {
    unsafe {
        let fd = libc::STDIN_FILENO;
        let mut termios = std::mem::zeroed();
        libc::tcgetattr(fd, &mut termios);

        let mut raw = termios;
        raw.c_iflag &= !(libc::BRKINT | libc::ICRNL | libc::INPCK | libc::ISTRIP | libc::IXON);
        raw.c_oflag &= !(libc::OPOST);
        raw.c_cflag |= libc::CS8;
        raw.c_lflag &= !(libc::ECHO | libc::ICANON | libc::IEXTEN | libc::ISIG);
        raw.c_cc[libc::VMIN] = 1;
        raw.c_cc[libc::VTIME] = 0;
        libc::tcsetattr(fd, libc::TCSAFLUSH, &raw);

        termios
    }
}

pub fn disable_raw_mode(orig: &libc::termios) {
    unsafe {
        libc::tcsetattr(libc::STDIN_FILENO, libc::TCSAFLUSH, orig);
    }
}