linux.h

#ifndef LINUX_H
#define LINUX_H

#include <stdio.h>
#include <stdint.h>
#include <signal.h>
#include <unistd.h>
#include <termios.h>


static struct termios original_tio;

static void disable_input_buffering()
{
    tcgetattr(STDIN_FILENO, &original_tio);
    struct termios new_tio = original_tio;
    new_tio.c_lflag &= ~ICANON & ~ECHO;
    tcsetattr(STDIN_FILENO, TCSANOW, &new_tio);
}

static void restore_input_buffering()
{
    tcsetattr(STDIN_FILENO, TCSANOW, &original_tio);
}

static uint16_t check_key()
{
    fd_set readfds;
    FD_ZERO(&readfds);
    FD_SET(STDIN_FILENO, &readfds);

    struct timeval timeout;
    timeout.tv_sec = 0;
    timeout.tv_usec = 0;
    return select(1, &readfds, NULL, NULL, &timeout) != 0;
}

#endif