freebsd-src/usr.bin/window/wwinit.c
1995-08-05 22:04:23 +00:00

402 lines
9.2 KiB
C

/*
* Copyright (c) 1983, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Edward Wang at The University of California, Berkeley.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef lint
static char sccsid[] = "@(#)wwinit.c 8.1 (Berkeley) 6/6/93";
#endif /* not lint */
#include "ww.h"
#include "tt.h"
#include <sys/signal.h>
#include <fcntl.h>
#include <termcap.h>
#include "char.h"
wwinit()
{
register i, j;
char *kp;
int s;
wwdtablesize = getdtablesize();
wwhead.ww_forw = &wwhead;
wwhead.ww_back = &wwhead;
s = sigblock(sigmask(SIGIO) | sigmask(SIGCHLD) | sigmask(SIGALRM) |
sigmask(SIGHUP) | sigmask(SIGTERM));
if (signal(SIGIO, wwrint) == BADSIG ||
signal(SIGCHLD, wwchild) == BADSIG ||
signal(SIGHUP, wwquit) == BADSIG ||
signal(SIGTERM, wwquit) == BADSIG ||
signal(SIGPIPE, SIG_IGN) == BADSIG) {
wwerrno = WWE_SYS;
return -1;
}
if (wwgettty(0, &wwoldtty) < 0)
return -1;
wwwintty = wwoldtty;
#ifdef OLD_TTY
wwwintty.ww_sgttyb.sg_flags &= ~XTABS;
wwnewtty.ww_sgttyb = wwoldtty.ww_sgttyb;
wwnewtty.ww_sgttyb.sg_erase = -1;
wwnewtty.ww_sgttyb.sg_kill = -1;
wwnewtty.ww_sgttyb.sg_flags |= CBREAK;
wwnewtty.ww_sgttyb.sg_flags &= ~(ECHO|CRMOD);
wwnewtty.ww_tchars.t_intrc = -1;
wwnewtty.ww_tchars.t_quitc = -1;
wwnewtty.ww_tchars.t_startc = -1;
wwnewtty.ww_tchars.t_stopc = -1;
wwnewtty.ww_tchars.t_eofc = -1;
wwnewtty.ww_tchars.t_brkc = -1;
wwnewtty.ww_ltchars.t_suspc = -1;
wwnewtty.ww_ltchars.t_dsuspc = -1;
wwnewtty.ww_ltchars.t_rprntc = -1;
wwnewtty.ww_ltchars.t_flushc = -1;
wwnewtty.ww_ltchars.t_werasc = -1;
wwnewtty.ww_ltchars.t_lnextc = -1;
wwnewtty.ww_lmode = wwoldtty.ww_lmode | LLITOUT;
wwnewtty.ww_ldisc = wwoldtty.ww_ldisc;
#else
#ifndef OXTABS
#define OXTABS XTABS
#endif
#ifndef _POSIX_VDISABLE
#define _POSIX_VDISABLE -1
#endif
wwwintty.ww_termios.c_oflag &= ~OXTABS;
wwnewtty.ww_termios = wwoldtty.ww_termios;
wwnewtty.ww_termios.c_iflag &=
~(ISTRIP | INLCR | IGNCR | ICRNL | IXON | IXOFF | IMAXBEL);
wwnewtty.ww_termios.c_oflag = 0;
wwnewtty.ww_termios.c_cflag &= ~(CSIZE | PARENB);
wwnewtty.ww_termios.c_cflag |= CS8;
wwnewtty.ww_termios.c_lflag = 0;
for (i = 0; i < NCCS; i++)
wwnewtty.ww_termios.c_cc[i] = _POSIX_VDISABLE;
wwnewtty.ww_termios.c_cc[VMIN] = 0;
wwnewtty.ww_termios.c_cc[VTIME] = 0;
#endif
wwnewtty.ww_fflags = wwoldtty.ww_fflags | FASYNC;
if (wwsettty(0, &wwnewtty) < 0)
goto bad;
if ((wwterm = getenv("TERM")) == 0) {
wwerrno = WWE_BADTERM;
goto bad;
}
if (tgetent(wwtermcap, wwterm) != 1) {
wwerrno = WWE_BADTERM;
goto bad;
}
#ifdef OLD_TTY
ospeed = wwoldtty.ww_sgttyb.sg_ospeed;
switch (ospeed) {
default:
case B0:
goto bad;
case B50:
wwbaud = 50;
break;
case B75:
wwbaud = 75;
break;
case B110:
wwbaud = 110;
break;
case B134:
wwbaud = 134;
break;
case B150:
wwbaud = 150;
break;
case B200:
wwbaud = 200;
break;
case B300:
wwbaud = 300;
break;
case B600:
wwbaud = 600;
break;
case B1200:
wwbaud = 1200;
break;
case B1800:
wwbaud = 1800;
break;
case B2400:
wwbaud = 2400;
break;
case B4800:
wwbaud = 4800;
break;
case B9600:
wwbaud = 9600;
break;
#ifdef B19200
case B19200:
#else
case EXTA:
#endif
wwbaud = 19200;
break;
#ifdef B38400
case B38400:
#else
case EXTB:
#endif
wwbaud = 38400;
break;
#ifdef B57600
case B57600:
wwbaud = 57600;
break;
#endif
#ifdef B115200
case B115200:
wwbaud = 115200;
break;
#endif
}
#else
if ((wwbaud = cfgetospeed(&wwoldtty.ww_termios)) == B0)
goto bad;
#endif
wwospeed = ospeed;
if (xxinit() < 0)
goto bad;
wwnrow = tt.tt_nrow;
wwncol = tt.tt_ncol;
wwavailmodes = tt.tt_availmodes;
wwwrap = tt.tt_wrap;
if (wwavailmodes & WWM_REV)
wwcursormodes = WWM_REV | wwavailmodes & WWM_BLK;
else if (wwavailmodes & WWM_UL)
wwcursormodes = WWM_UL;
if ((wwib = malloc((unsigned) 512)) == 0)
goto bad;
wwibe = wwib + 512;
wwibq = wwibp = wwib;
if ((wwsmap = wwalloc(0, 0, wwnrow, wwncol, sizeof (char))) == 0)
goto bad;
for (i = 0; i < wwnrow; i++)
for (j = 0; j < wwncol; j++)
wwsmap[i][j] = WWX_NOBODY;
wwos = (union ww_char **)
wwalloc(0, 0, wwnrow, wwncol, sizeof (union ww_char));
if (wwos == 0)
goto bad;
/* wwos is cleared in wwstart1() */
wwns = (union ww_char **)
wwalloc(0, 0, wwnrow, wwncol, sizeof (union ww_char));
if (wwns == 0)
goto bad;
for (i = 0; i < wwnrow; i++)
for (j = 0; j < wwncol; j++)
wwns[i][j].c_w = ' ';
if (tt.tt_checkpoint) {
/* wwcs is also cleared in wwstart1() */
wwcs = (union ww_char **)
wwalloc(0, 0, wwnrow, wwncol, sizeof (union ww_char));
if (wwcs == 0)
goto bad;
}
wwtouched = malloc((unsigned) wwnrow);
if (wwtouched == 0) {
wwerrno = WWE_NOMEM;
goto bad;
}
for (i = 0; i < wwnrow; i++)
wwtouched[i] = 0;
wwupd = (struct ww_update *) malloc((unsigned) wwnrow * sizeof *wwupd);
if (wwupd == 0) {
wwerrno = WWE_NOMEM;
goto bad;
}
wwindex[WWX_NOBODY] = &wwnobody;
wwnobody.ww_order = NWW;
kp = wwwintermcap;
if (wwavailmodes & WWM_REV)
wwaddcap1(WWT_REV, &kp);
if (wwavailmodes & WWM_BLK)
wwaddcap1(WWT_BLK, &kp);
if (wwavailmodes & WWM_UL)
wwaddcap1(WWT_UL, &kp);
if (wwavailmodes & WWM_GRP)
wwaddcap1(WWT_GRP, &kp);
if (wwavailmodes & WWM_DIM)
wwaddcap1(WWT_DIM, &kp);
if (wwavailmodes & WWM_USR)
wwaddcap1(WWT_USR, &kp);
if (tt.tt_insline && tt.tt_delline || tt.tt_setscroll)
wwaddcap1(WWT_ALDL, &kp);
if (tt.tt_inschar)
wwaddcap1(WWT_IMEI, &kp);
if (tt.tt_insspace)
wwaddcap1(WWT_IC, &kp);
if (tt.tt_delchar)
wwaddcap1(WWT_DC, &kp);
wwaddcap("kb", &kp);
wwaddcap("ku", &kp);
wwaddcap("kd", &kp);
wwaddcap("kl", &kp);
wwaddcap("kr", &kp);
wwaddcap("kh", &kp);
if ((j = tgetnum("kn")) >= 0) {
char cap[32];
(void) sprintf(kp, "kn#%d:", j);
for (; *kp; kp++)
;
for (i = 1; i <= j; i++) {
(void) sprintf(cap, "k%d", i);
wwaddcap(cap, &kp);
cap[0] = 'l';
wwaddcap(cap, &kp);
}
}
/*
* It's ok to do this here even if setenv() is destructive
* since tt_init() has already made its own copy of it and
* wwterm now points to the copy.
*/
(void) setenv("TERM", WWT_TERM, 1);
#ifdef TERMINFO
if (wwterminfoinit() < 0)
goto bad;
#endif
if (tt.tt_checkpoint)
if (signal(SIGALRM, wwalarm) == BADSIG) {
wwerrno = WWE_SYS;
goto bad;
}
/* catch typeahead before ASYNC was set */
(void) kill(getpid(), SIGIO);
wwstart1();
(void) sigsetmask(s);
return 0;
bad:
/*
* Don't bother to free storage. We're supposed
* to exit when wwinit fails anyway.
*/
(void) signal(SIGIO, SIG_DFL);
(void) wwsettty(0, &wwoldtty);
(void) sigsetmask(s);
return -1;
}
wwaddcap(cap, kp)
register char *cap;
register char **kp;
{
char tbuf[512];
char *tp = tbuf;
register char *str, *p;
if ((str = tgetstr(cap, &tp)) != 0) {
while (*(*kp)++ = *cap++)
;
(*kp)[-1] = '=';
while (*str) {
for (p = unctrl(*str++); *(*kp)++ = *p++;)
;
(*kp)--;
}
*(*kp)++ = ':';
**kp = 0;
}
}
wwaddcap1(cap, kp)
register char *cap;
register char **kp;
{
while (*(*kp)++ = *cap++)
;
(*kp)--;
}
wwstart()
{
register i;
(void) wwsettty(0, &wwnewtty);
signal(SIGIO, wwrint);
for (i = 0; i < wwnrow; i++)
wwtouched[i] = WWU_TOUCHED;
wwstart1();
}
wwstart1()
{
register i, j;
for (i = 0; i < wwnrow; i++)
for (j = 0; j < wwncol; j++) {
wwos[i][j].c_w = ' ';
if (tt.tt_checkpoint)
wwcs[i][j].c_w = ' ';
}
xxstart();
if (tt.tt_checkpoint)
wwdocheckpoint = 1;
}
/*
* Reset data structures and terminal from an unknown state.
* Restoring wwos has been taken care of elsewhere.
*/
wwreset()
{
register i;
xxreset();
for (i = 0; i < wwnrow; i++)
wwtouched[i] = WWU_TOUCHED;
}