avoid uneeded y.tab.c recompilation

[unix-history] / usr / src / old / lib2648 / ttyinit.c

/*
* Copyright (c) 1980 Regents of the University of California.
* All rights reserved.  The Berkeley software License Agreement
* specifies the terms and conditions for redistribution.
*/

#ifndef lint
static char sccsid[] = "@(#)ttyinit.c   5.1 (Berkeley) %G%";
#endif not lint

/*
* sgtty stuff
*/

#include <sgtty.h>

struct  sgttyb  _ttyb;
struct  tchars  _otch, _ntch;
int     _normf;

/*
* Routines for dealing with the unix tty modes
*/

#include "2648.h"

ttyinit()
{
       if (strcmp(getenv("TERM"), "hp2648") == 0)
               _on2648 = 1;
       ioctl(fileno(stdin), TIOCGETP, &_ttyb);
       ioctl(fileno(stdin), TIOCGETC, &_otch);
       _ntch = _otch;
       _ntch.t_quitc = _ntch.t_startc = _ntch.t_stopc = -1;
       _normf = _ttyb.sg_flags;
       _ttyb.sg_flags |= CBREAK;
       _ttyb.sg_flags &= ~(ECHO|CRMOD);
       ioctl(fileno(stdin), TIOCSETN, &_ttyb);
       ioctl(fileno(stdin), TIOCSETC, &_ntch);
       gdefault();
       zoomn(1);
       zoomon();
       kon();
       rboff();
       _cursoron = 1;  /* to force it off */
       _escmode = NONE;
       curoff();
       clearg();
       gon();
       aoff();
}

done()
{
       goff();
       koff();
       aon();
       sync();
       escseq(NONE);
       lowleft();
       printf("\n");
       fflush(stdout);
       _ttyb.sg_flags = _normf;
       ioctl(fileno(stdin), TIOCSETN, &_ttyb);
       ioctl(fileno(stdin), TIOCSETC, &_otch);
}