[dragonfly.git] / usr.bin / window / wwinit.c

/*	@(#)wwinit.c	8.2 (Berkeley) 4/28/95	*/
/*	$NetBSD: wwinit.c,v 1.19 2009/04/14 08:50:06 lukem Exp $	*/

/*
 * 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. 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.
 */

#include <fcntl.h>
#include <signal.h>
#include <stdlib.h>
#include <stdio.h>
#include <termcap.h>
#include "ww.h"
#include "tt.h"
#include "xx.h"
#include "char.h"

int
wwinit(void)
{
	int i, j;
	char *kp;
	sigset_t nsigset, osigset;

	wwdtablesize = 3;
	wwhead.ww_forw = &wwhead;
	wwhead.ww_back = &wwhead;

	sigemptyset(&nsigset);
	sigaddset(&nsigset, SIGCHLD);
	sigaddset(&nsigset, SIGALRM);
	sigaddset(&nsigset, SIGHUP);
	sigaddset(&nsigset, SIGTERM);
	sigprocmask(SIG_BLOCK, &nsigset, &osigset);

	if (signal(SIGCHLD, wwchild) == SIG_ERR ||
	    signal(SIGHUP, wwquit) == SIG_ERR ||
	    signal(SIGTERM, wwquit) == SIG_ERR ||
	    signal(SIGPIPE, SIG_IGN) == SIG_ERR) {
		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;
	wwwintty.ww_termios.c_cflag &= ~CLOCAL;
	wwwintty.ww_termios.c_cflag |= HUPCL;
	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] = 1;
	wwnewtty.ww_termios.c_cc[VTIME] = 0;
#endif
	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
	wwospeed = wwoldtty.ww_sgttyb.sg_ospeed;
#else
	wwospeed = cfgetospeed(&wwoldtty.ww_termios);
	wwbaud = wwospeed;
#endif
	switch (wwospeed) {
	default:
	case B0:
		wwbaud = 9600;
		break;
	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
	}

	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;

	wwsmap = (unsigned char **)
		wwalloc(0, 0, wwnrow, wwncol, sizeof (unsigned char));
	if (wwsmap == 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) == SIG_ERR) {
			wwerrno = WWE_SYS;
			goto bad;
		}
	wwstart1();

	sigprocmask(SIG_SETMASK, &osigset, (sigset_t *)0);
	return 0;

bad:
	/*
	 * Don't bother to free storage.  We're supposed
	 * to exit when wwinit fails anyway.
	 */
	(void) wwsettty(0, &wwoldtty);

	sigprocmask(SIG_SETMASK, &osigset, (sigset_t *)0);
	return -1;
}

void
wwaddcap(const char *cap, char **kp)
{
	char tbuf[512];
	char *tp = tbuf;
	char *str;
	const char *p;

	if ((str = tgetstr(cap, &tp)) != 0) {
		while ((*(*kp)++ = *cap++))
			;
		(*kp)[-1] = '=';
		while (*str) {
			for (p = unctrl(*str++); (*(*kp)++ = *p++);)
				;
			(*kp)--;
		}
		*(*kp)++ = ':';
		**kp = 0;
	}
}

void
wwaddcap1(const char *cap, char **kp)
{
	while ((*(*kp)++ = *cap++))
		;
	(*kp)--;
}

void
wwstart(void)
{
	int i;

	(void) wwsettty(0, &wwnewtty);
	for (i = 0; i < wwnrow; i++)
		wwtouched[i] = WWU_TOUCHED;
	wwstart1();
}

void
wwstart1(void)
{
	int 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.
 */
void
wwreset(void)
{
	int i;

	xxreset();
	for (i = 0; i < wwnrow; i++)
		wwtouched[i] = WWU_TOUCHED;
}
Commit	Line	Data
2c872e05	1	/* @(#)wwinit.c 8.2 (Berkeley) 4/28/95 */
abecab39 SW	2	/* $NetBSD: wwinit.c,v 1.19 2009/04/14 08:50:06 lukem Exp $ */
abecab39 SW	3
984263bc MD	4	/*
	5	* Copyright (c) 1983, 1993
	6	* The Regents of the University of California. All rights reserved.
	7	*
	8	* This code is derived from software contributed to Berkeley by
	9	* Edward Wang at The University of California, Berkeley.
	10	*
	11	* Redistribution and use in source and binary forms, with or without
	12	* modification, are permitted provided that the following conditions
	13	* are met:
	14	* 1. Redistributions of source code must retain the above copyright
	15	* notice, this list of conditions and the following disclaimer.
	16	* 2. Redistributions in binary form must reproduce the above copyright
	17	* notice, this list of conditions and the following disclaimer in the
	18	* documentation and/or other materials provided with the distribution.
abecab39	19	* 3. Neither the name of the University nor the names of its contributors
984263bc MD	20	* may be used to endorse or promote products derived from this software
	21	* without specific prior written permission.
	22	*
	23	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	24	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	25	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	26	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	27	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	28	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	29	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	30	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	31	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	32	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	33	* SUCH DAMAGE.
	34	*/
	35
984263bc	36	#include <fcntl.h>
abecab39 SW	37	#include <signal.h>
abecab39 SW	38	#include <stdlib.h>
7a2e9d59	39	#include <stdio.h>
984263bc	40	#include <termcap.h>
7a2e9d59 SW	41	#include "ww.h"
7a2e9d59 SW	42	#include "tt.h"
abecab39	43	#include "xx.h"
984263bc MD	44	#include "char.h"
984263bc MD	45
abecab39 SW	46	int
abecab39 SW	47	wwinit(void)
984263bc	48	{
abecab39	49	int i, j;
984263bc	50	char *kp;
abecab39	51	sigset_t nsigset, osigset;
984263bc	52
abecab39	53	wwdtablesize = 3;
984263bc MD	54	wwhead.ww_forw = &wwhead;
	55	wwhead.ww_back = &wwhead;
	56
abecab39 SW	57	sigemptyset(&nsigset);
	58	sigaddset(&nsigset, SIGCHLD);
	59	sigaddset(&nsigset, SIGALRM);
	60	sigaddset(&nsigset, SIGHUP);
	61	sigaddset(&nsigset, SIGTERM);
	62	sigprocmask(SIG_BLOCK, &nsigset, &osigset);
	63
	64	if (signal(SIGCHLD, wwchild) == SIG_ERR \|\|
	65	signal(SIGHUP, wwquit) == SIG_ERR \|\|
	66	signal(SIGTERM, wwquit) == SIG_ERR \|\|
	67	signal(SIGPIPE, SIG_IGN) == SIG_ERR) {
984263bc MD	68	wwerrno = WWE_SYS;
	69	return -1;
	70	}
	71
	72	if (wwgettty(0, &wwoldtty) < 0)
	73	return -1;
	74	wwwintty = wwoldtty;
	75	#ifdef OLD_TTY
	76	wwwintty.ww_sgttyb.sg_flags &= ~XTABS;
	77	wwnewtty.ww_sgttyb = wwoldtty.ww_sgttyb;
	78	wwnewtty.ww_sgttyb.sg_erase = -1;
	79	wwnewtty.ww_sgttyb.sg_kill = -1;
	80	wwnewtty.ww_sgttyb.sg_flags \|= CBREAK;
	81	wwnewtty.ww_sgttyb.sg_flags &= ~(ECHO\|CRMOD);
	82	wwnewtty.ww_tchars.t_intrc = -1;
	83	wwnewtty.ww_tchars.t_quitc = -1;
	84	wwnewtty.ww_tchars.t_startc = -1;
	85	wwnewtty.ww_tchars.t_stopc = -1;
	86	wwnewtty.ww_tchars.t_eofc = -1;
	87	wwnewtty.ww_tchars.t_brkc = -1;
	88	wwnewtty.ww_ltchars.t_suspc = -1;
	89	wwnewtty.ww_ltchars.t_dsuspc = -1;
	90	wwnewtty.ww_ltchars.t_rprntc = -1;
	91	wwnewtty.ww_ltchars.t_flushc = -1;
	92	wwnewtty.ww_ltchars.t_werasc = -1;
	93	wwnewtty.ww_ltchars.t_lnextc = -1;
	94	wwnewtty.ww_lmode = wwoldtty.ww_lmode \| LLITOUT;
	95	wwnewtty.ww_ldisc = wwoldtty.ww_ldisc;
	96	#else
	97	#ifndef OXTABS
	98	#define OXTABS XTABS
	99	#endif
	100	#ifndef _POSIX_VDISABLE
	101	#define _POSIX_VDISABLE -1
	102	#endif
	103	wwwintty.ww_termios.c_oflag &= ~OXTABS;
abecab39 SW	104	wwwintty.ww_termios.c_cflag &= ~CLOCAL;
abecab39 SW	105	wwwintty.ww_termios.c_cflag \|= HUPCL;
984263bc MD	106	wwnewtty.ww_termios = wwoldtty.ww_termios;
	107	wwnewtty.ww_termios.c_iflag &=
	108	~(ISTRIP \| INLCR \| IGNCR \| ICRNL \| IXON \| IXOFF \| IMAXBEL);
	109	wwnewtty.ww_termios.c_oflag = 0;
	110	wwnewtty.ww_termios.c_cflag &= ~(CSIZE \| PARENB);
	111	wwnewtty.ww_termios.c_cflag \|= CS8;
	112	wwnewtty.ww_termios.c_lflag = 0;
	113	for (i = 0; i < NCCS; i++)
	114	wwnewtty.ww_termios.c_cc[i] = _POSIX_VDISABLE;
abecab39	115	wwnewtty.ww_termios.c_cc[VMIN] = 1;
984263bc MD	116	wwnewtty.ww_termios.c_cc[VTIME] = 0;
984263bc MD	117	#endif
984263bc MD	118	if (wwsettty(0, &wwnewtty) < 0)
	119	goto bad;
	120
	121	if ((wwterm = getenv("TERM")) == 0) {
	122	wwerrno = WWE_BADTERM;
	123	goto bad;
	124	}
	125	if (tgetent(wwtermcap, wwterm) != 1) {
	126	wwerrno = WWE_BADTERM;
	127	goto bad;
	128	}
	129	#ifdef OLD_TTY
abecab39 SW	130	wwospeed = wwoldtty.ww_sgttyb.sg_ospeed;
	131	#else
	132	wwospeed = cfgetospeed(&wwoldtty.ww_termios);
	133	wwbaud = wwospeed;
	134	#endif
	135	switch (wwospeed) {
984263bc MD	136	default:
984263bc MD	137	case B0:
abecab39 SW	138	wwbaud = 9600;
abecab39 SW	139	break;
984263bc MD	140	case B50:
	141	wwbaud = 50;
	142	break;
	143	case B75:
	144	wwbaud = 75;
	145	break;
	146	case B110:
	147	wwbaud = 110;
	148	break;
	149	case B134:
	150	wwbaud = 134;
	151	break;
	152	case B150:
	153	wwbaud = 150;
	154	break;
	155	case B200:
	156	wwbaud = 200;
	157	break;
	158	case B300:
	159	wwbaud = 300;
	160	break;
	161	case B600:
	162	wwbaud = 600;
	163	break;
	164	case B1200:
	165	wwbaud = 1200;
	166	break;
	167	case B1800:
	168	wwbaud = 1800;
	169	break;
	170	case B2400:
	171	wwbaud = 2400;
	172	break;
	173	case B4800:
	174	wwbaud = 4800;
	175	break;
	176	case B9600:
	177	wwbaud = 9600;
	178	break;
	179	#ifdef B19200
	180	case B19200:
	181	#else
	182	case EXTA:
	183	#endif
	184	wwbaud = 19200;
	185	break;
	186	#ifdef B38400
	187	case B38400:
	188	#else
	189	case EXTB:
	190	#endif
	191	wwbaud = 38400;
	192	break;
	193	#ifdef B57600
	194	case B57600:
	195	wwbaud = 57600;
	196	break;
	197	#endif
	198	#ifdef B115200
	199	case B115200:
	200	wwbaud = 115200;
	201	break;
	202	#endif
	203	}
984263bc MD	204
	205	if (xxinit() < 0)
	206	goto bad;
	207	wwnrow = tt.tt_nrow;
	208	wwncol = tt.tt_ncol;
	209	wwavailmodes = tt.tt_availmodes;
	210	wwwrap = tt.tt_wrap;
	211
	212	if (wwavailmodes & WWM_REV)
abecab39	213	wwcursormodes = WWM_REV \| (wwavailmodes & WWM_BLK);
984263bc MD	214	else if (wwavailmodes & WWM_UL)
	215	wwcursormodes = WWM_UL;
	216
	217	if ((wwib = malloc((unsigned) 512)) == 0)
	218	goto bad;
	219	wwibe = wwib + 512;
	220	wwibq = wwibp = wwib;
	221
abecab39 SW	222	wwsmap = (unsigned char **)
	223	wwalloc(0, 0, wwnrow, wwncol, sizeof (unsigned char));
	224	if (wwsmap == 0)
984263bc MD	225	goto bad;
	226	for (i = 0; i < wwnrow; i++)
	227	for (j = 0; j < wwncol; j++)
	228	wwsmap[i][j] = WWX_NOBODY;
	229
	230	wwos = (union ww_char **)
	231	wwalloc(0, 0, wwnrow, wwncol, sizeof (union ww_char));
	232	if (wwos == 0)
	233	goto bad;
	234	/* wwos is cleared in wwstart1() */
	235	wwns = (union ww_char **)
	236	wwalloc(0, 0, wwnrow, wwncol, sizeof (union ww_char));
	237	if (wwns == 0)
	238	goto bad;
	239	for (i = 0; i < wwnrow; i++)
	240	for (j = 0; j < wwncol; j++)
	241	wwns[i][j].c_w = ' ';
	242	if (tt.tt_checkpoint) {
	243	/* wwcs is also cleared in wwstart1() */
	244	wwcs = (union ww_char **)
	245	wwalloc(0, 0, wwnrow, wwncol, sizeof (union ww_char));
	246	if (wwcs == 0)
	247	goto bad;
	248	}
	249
	250	wwtouched = malloc((unsigned) wwnrow);
	251	if (wwtouched == 0) {
	252	wwerrno = WWE_NOMEM;
	253	goto bad;
	254	}
	255	for (i = 0; i < wwnrow; i++)
	256	wwtouched[i] = 0;
	257
	258	wwupd = (struct ww_update ) malloc((unsigned) wwnrow sizeof *wwupd);
	259	if (wwupd == 0) {
	260	wwerrno = WWE_NOMEM;
	261	goto bad;
	262	}
	263
	264	wwindex[WWX_NOBODY] = &wwnobody;
	265	wwnobody.ww_order = NWW;
	266
	267	kp = wwwintermcap;
	268	if (wwavailmodes & WWM_REV)
	269	wwaddcap1(WWT_REV, &kp);
	270	if (wwavailmodes & WWM_BLK)
	271	wwaddcap1(WWT_BLK, &kp);
	272	if (wwavailmodes & WWM_UL)
	273	wwaddcap1(WWT_UL, &kp);
	274	if (wwavailmodes & WWM_GRP)
	275	wwaddcap1(WWT_GRP, &kp);
	276	if (wwavailmodes & WWM_DIM)
	277	wwaddcap1(WWT_DIM, &kp);
	278	if (wwavailmodes & WWM_USR)
	279	wwaddcap1(WWT_USR, &kp);
abecab39	280	if ((tt.tt_insline && tt.tt_delline) \|\| tt.tt_setscroll)
984263bc MD	281	wwaddcap1(WWT_ALDL, &kp);
	282	if (tt.tt_inschar)
	283	wwaddcap1(WWT_IMEI, &kp);
	284	if (tt.tt_insspace)
	285	wwaddcap1(WWT_IC, &kp);
	286	if (tt.tt_delchar)
	287	wwaddcap1(WWT_DC, &kp);
	288	wwaddcap("kb", &kp);
abecab39 SW	289	wwaddcap("ku", &kp);
	290	wwaddcap("kd", &kp);
	291	wwaddcap("kl", &kp);
	292	wwaddcap("kr", &kp);
984263bc MD	293	wwaddcap("kh", &kp);
	294	if ((j = tgetnum("kn")) >= 0) {
	295	char cap[32];
	296
	297	(void) sprintf(kp, "kn#%d:", j);
	298	for (; *kp; kp++)
	299	;
	300	for (i = 1; i <= j; i++) {
	301	(void) sprintf(cap, "k%d", i);
	302	wwaddcap(cap, &kp);
	303	cap[0] = 'l';
	304	wwaddcap(cap, &kp);
	305	}
	306	}
	307	/*
	308	* It's ok to do this here even if setenv() is destructive
	309	* since tt_init() has already made its own copy of it and
	310	* wwterm now points to the copy.
	311	*/
abecab39	312	(void) setenv("TERM", WWT_TERM, 1);
984263bc MD	313	#ifdef TERMINFO
	314	if (wwterminfoinit() < 0)
	315	goto bad;
	316	#endif
	317
	318	if (tt.tt_checkpoint)
abecab39	319	if (signal(SIGALRM, wwalarm) == SIG_ERR) {
984263bc MD	320	wwerrno = WWE_SYS;
	321	goto bad;
	322	}
984263bc	323	wwstart1();
abecab39 SW	324
abecab39 SW	325	sigprocmask(SIG_SETMASK, &osigset, (sigset_t *)0);
984263bc	326	return 0;
abecab39	327
984263bc MD	328	bad:
	329	/*
	330	* Don't bother to free storage. We're supposed
	331	* to exit when wwinit fails anyway.
	332	*/
984263bc	333	(void) wwsettty(0, &wwoldtty);
abecab39 SW	334
abecab39 SW	335	sigprocmask(SIG_SETMASK, &osigset, (sigset_t *)0);
984263bc MD	336	return -1;
	337	}
	338
abecab39 SW	339	void
abecab39 SW	340	wwaddcap(const char cap, char *kp)
984263bc MD	341	{
	342	char tbuf[512];
	343	char *tp = tbuf;
abecab39 SW	344	char *str;
abecab39 SW	345	const char *p;
984263bc MD	346
984263bc MD	347	if ((str = tgetstr(cap, &tp)) != 0) {
abecab39	348	while (((kp)++ = *cap++))
984263bc MD	349	;
	350	(*kp)[-1] = '=';
	351	while (*str) {
abecab39	352	for (p = unctrl(str++); ((kp)++ = p++);)
984263bc MD	353	;
	354	(*kp)--;
	355	}
	356	(kp)++ = ':';
	357	**kp = 0;
	358	}
	359	}
	360
abecab39 SW	361	void
abecab39 SW	362	wwaddcap1(const char cap, char *kp)
984263bc	363	{
abecab39	364	while (((kp)++ = *cap++))
984263bc MD	365	;
	366	(*kp)--;
	367	}
	368
abecab39 SW	369	void
abecab39 SW	370	wwstart(void)
984263bc	371	{
abecab39	372	int i;
984263bc MD	373
984263bc MD	374	(void) wwsettty(0, &wwnewtty);
984263bc MD	375	for (i = 0; i < wwnrow; i++)
	376	wwtouched[i] = WWU_TOUCHED;
	377	wwstart1();
	378	}
	379
abecab39 SW	380	void
abecab39 SW	381	wwstart1(void)
984263bc	382	{
abecab39	383	int i, j;
984263bc MD	384
	385	for (i = 0; i < wwnrow; i++)
	386	for (j = 0; j < wwncol; j++) {
	387	wwos[i][j].c_w = ' ';
	388	if (tt.tt_checkpoint)
	389	wwcs[i][j].c_w = ' ';
	390	}
	391	xxstart();
	392	if (tt.tt_checkpoint)
	393	wwdocheckpoint = 1;
	394	}
	395
	396	/*
	397	* Reset data structures and terminal from an unknown state.
	398	* Restoring wwos has been taken care of elsewhere.
	399	*/
abecab39 SW	400	void
abecab39 SW	401	wwreset(void)
984263bc	402	{
abecab39	403	int i;
984263bc MD	404
	405	xxreset();
	406	for (i = 0; i < wwnrow; i++)
	407	wwtouched[i] = WWU_TOUCHED;
	408	}