#include <stdio.h>
#include <termios.h>
#include <sys/ioctl.h>


int
tty_cbreak (int fd, struct termios *orig)
{
  struct termios buf;
   
  if (tcgetattr (fd, &buf) < 0)
    return -1;

  /* Save the original state, for resetting later */
  *orig = buf;
      
  buf.c_lflag &= ~(ECHO | ICANON);
  buf.c_iflag &= ~(ICRNL | INLCR);
  buf.c_cc[VMIN] = 1;
  buf.c_cc[VTIME] = 0;

#if defined (VLNEXT) && defined (_POSIX_VDISABLE)
  buf.c_cc[VLNEXT] = _POSIX_VDISABLE;
#endif

#if defined (VDSUSP) && defined (_POSIX_VDISABLE)
  buf.c_cc[VDSUSP] = _POSIX_VDISABLE;
#endif

  if (tcsetattr (fd, TCSAFLUSH, &buf) < 0)
    return -1;

  return 0;
}

int
tty_set_attributes (int fd, struct termios *buf)
{
  if (tcsetattr (fd, TCSAFLUSH, buf) < 0)
    return -1;

  return 0;
}


int
main (int argc, char **argv)
{
  struct termios term_attributes;
  tty_cbreak (0, &term_attributes);

  while (1)
  {
    int c;
    read (0, &c, 1);
    fprintf (stderr, "%d\n", c);

    if (c=='q')
      break;
  }

  tty_set_attributes (0, &term_attributes);

  return 0;
}