[unix-history] / usr / src / usr.bin / window / wwinit.c

#ifndef lint
static  char *sccsid = "@(#)wwinit.c    1.5 83/07/22";
#endif

#include "ww.h"

struct ww_tty wwoldtty;
struct ww_tty wwnewtty = {
       { 0, 0, -1, -1, 0 },
       { -1, -1, -1, -1, -1, -1 },
       { -1, -1, -1, -1, -1, -1 },
       0, 0, 0
};
int _wwdtablesize;
int wwncol, wwnrow;

wwinit()
{
       static char done = 0;

       if (done)
               return 0;
       done++;
       _wwdtablesize = getdtablesize();
       if (wwgettty(0, &wwoldtty) < 0)
               return -1;
       wwnewtty.ww_sgttyb.sg_flags = wwoldtty.ww_sgttyb.sg_flags;
       wwnewtty.ww_sgttyb.sg_ispeed = wwoldtty.ww_sgttyb.sg_ispeed;
       wwnewtty.ww_sgttyb.sg_ospeed = wwoldtty.ww_sgttyb.sg_ospeed;
       wwnewtty.ww_lmode = wwoldtty.ww_lmode;
       wwnewtty.ww_pgrp = wwoldtty.ww_pgrp;
       wwnewtty.ww_ldisc = wwoldtty.ww_ldisc;
       wwnewtty.ww_sgttyb.sg_flags |= CBREAK;
       wwnewtty.ww_sgttyb.sg_flags &= ~(ECHO|CRMOD);
       wwnewtty.ww_lmode |= LLITOUT;
       wwnewtty.ww_tchars.t_quitc = wwoldtty.ww_tchars.t_quitc;
       if (wwsettty(0, &wwnewtty) < 0)
               return -1;
       if (Winit(2, 1) != 0)
               return -1;
       WSetRealCursor = 1;
       Wscreensize(&wwnrow, &wwncol);
       return 0;
}