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NetBSD/lib/libcurses/setterm.c

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/* $NetBSD: setterm.c,v 1.31 2002/01/02 10:38:29 blymn Exp $ */
/*
* Copyright (c) 1981, 1993, 1994
* The Regents of the University of California. All rights reserved.
*
* 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.
*/
#include <sys/cdefs.h>
#ifndef lint
#if 0
static char sccsid[] = "@(#)setterm.c 8.8 (Berkeley) 10/25/94";
#else
__RCSID("$NetBSD: setterm.c,v 1.31 2002/01/02 10:38:29 blymn Exp $");
#endif
#endif /* not lint */
#include <sys/ioctl.h> /* TIOCGWINSZ on old systems. */
#include <stdlib.h>
#include <string.h>
#include <termios.h>
#include <unistd.h>
#include "curses.h"
#include "curses_private.h"
static int zap(SCREEN *screen);
struct tinfo *_cursesi_genbuf;
static char *sflags[] = {
/* am bs cc da eo */
&__tc_am, &__tc_bs, &__tc_cc, &__tc_da, &__tc_eo,
/* hc hl in mi ms */
&__tc_hc, &__tc_hl, &__tc_in, &__tc_mi, &__tc_ms,
/* nc ns os ul ut */
&__tc_nc, &__tc_ns, &__tc_os, &__tc_ul, &__tc_ut,
/* xb xn xt xs xx */
&__tc_xb, &__tc_xn, &__tc_xt, &__tc_xs, &__tc_xx
};
static int *svals[] = {
/* pa Co NC */
&__tc_pa, &__tc_Co, &__tc_NC
};
static char *_PC,
**sstrs[] = {
/* AB ac ae AF AL */
&__tc_AB, &__tc_ac, &__tc_ae, &__tc_AF, &__tc_AL,
/* al as bc bl bt */
&__tc_al, &__tc_as, &__tc_bc, &__tc_bl, &__tc_bt,
/* cd ce cl cm cr */
&__tc_cd, &__tc_ce, &__tc_cl, &__tc_cm, &__tc_cr,
/* cs dc DL dl dm */
&__tc_cs, &__tc_dc, &__tc_DL, &__tc_dl, &__tc_dm,
/* DO do eA ed ei */
&__tc_DO, &__tc_do, &__tc_eA, &__tc_ed, &__tc_ei,
/* ho Ic ic im Ip */
&__tc_ho, &__tc_Ic, &__tc_ic, &__tc_im, &__tc_Ip,
/* ip k0 k1 k2 k3 */
&__tc_ip, &__tc_k0, &__tc_k1, &__tc_k2, &__tc_k3,
/* k4 k5 k6 k7 k8 */
&__tc_k4, &__tc_k5, &__tc_k6, &__tc_k7, &__tc_k8,
/* k9 kd ke kh kl */
&__tc_k9, &__tc_kd, &__tc_ke, &__tc_kh, &__tc_kl,
/* kr ks ku LE ll */
&__tc_kr, &__tc_ks, &__tc_ku, &__tc_LE, &__tc_ll,
/* ma mb md me mh */
&__tc_ma, &__tc_mb, &__tc_md, &__tc_me, &__tc_mh,
/* mk mm mo mp mr */
&__tc_mk, &__tc_mm, &__tc_mo, &__tc_mp, &__tc_mr,
/* nd nl oc op pc */
&__tc_nd, &__tc_nl, &__tc_oc, &__tc_op, &_PC,
/* rc RI sc Sb se */
&__tc_rc, &__tc_RI, &__tc_Sb, &__tc_sc, &__tc_se,
/* SF Sf sf so sp */
&__tc_SF, &__tc_Sf, &__tc_sf, &__tc_so, &__tc_sp,
/* SR sr ta te ti */
&__tc_SR, &__tc_sr, &__tc_ta, &__tc_te, &__tc_ti,
/* uc ue UP up us */
&__tc_uc, &__tc_ue, &__tc_UP, &__tc_up, &__tc_us,
/* vb ve vi vs */
&__tc_vb, &__tc_ve, &__tc_vi, &__tc_vs
};
attr_t __mask_op, __mask_me, __mask_ue, __mask_se;
int
setterm(char *type)
{
return _cursesi_setterm(type, _cursesi_screen);
}
int
_cursesi_setterm(char *type, SCREEN *screen)
{
static char cm_buff[1024], tc[1024], *tcptr;
int unknown;
size_t limit;
struct winsize win;
char *p;
#ifdef DEBUG
__CTRACE("setterm: (\"%s\")\nLINES = %d, COLS = %d\n",
type, LINES, COLS);
#endif
if (type[0] == '\0')
type = "xx";
unknown = 0;
if (t_getent(&screen->cursesi_genbuf, type) != 1) {
unknown++;
}
#ifdef DEBUG
__CTRACE("setterm: tty = %s\n", type);
#endif
/* Try TIOCGWINSZ, and, if it fails, the termcap entry. */
if (ioctl(fileno(screen->outfd), TIOCGWINSZ, &win) != -1 &&
win.ws_row != 0 && win.ws_col != 0) {
screen->LINES = win.ws_row;
screen->COLS = win.ws_col;
} else {
if (unknown) {
screen->LINES = -1;
screen->COLS = -1;
} else {
screen->LINES = t_getnum(screen->cursesi_genbuf, "li");
screen->COLS = t_getnum(screen->cursesi_genbuf, "co");
}
}
/* POSIX 1003.2 requires that the environment override. */
if ((p = getenv("LINES")) != NULL)
screen->LINES = (int) strtol(p, NULL, 10);
if ((p = getenv("COLUMNS")) != NULL)
screen->COLS = (int) strtol(p, NULL, 10);
/*
* Want cols > 4, otherwise things will fail.
*/
if (screen->COLS <= 4)
return (ERR);
#ifdef DEBUG
__CTRACE("setterm: LINES = %d, COLS = %d\n", LINES, COLS);
#endif
if (!unknown) {
if (zap(screen) == ERR) /* Get terminal description.*/
return ERR;
}
/* If we can't tab, we can't backtab, either. */
if (!screen->GT)
screen->tc_bt = NULL;
/*
* Test for cursor motion capability.
*
*/
if (t_goto(NULL, screen->tc_cm, 0, 0, cm_buff, 1023) < 0) {
screen->CA = 0;
screen->tc_cm = 0;
} else
screen->CA = 1;
/*
* set the pad char, only take the first char of the pc capability
* as this is all we can use.
*/
screen->pad_char = screen->tc_pc ? screen->tc_pc[0] : 0;
if (unknown) {
strcpy(screen->ttytype, "dumb");
} else {
tcptr = tc;
limit = 1023;
if (t_getterm(screen->cursesi_genbuf, &tcptr, &limit) < 0)
return ERR;
__longname(tc, screen->ttytype);
}
/* If no scrolling commands, no quick change. */
screen->noqch =
(screen->tc_cs == NULL || screen->tc_ho == NULL ||
(screen->tc_SF == NULL && screen->tc_sf == NULL) ||
(screen->tc_SR == NULL && screen->tc_sr == NULL)) &&
((screen->tc_AL == NULL && screen->tc_al == NULL) ||
(screen->tc_DL == NULL && screen->tc_dl == NULL));
/* Precalculate conflict info for color/attribute end commands. */
screen->mask_op = __ATTRIBUTES & ~__COLOR;
if (screen->tc_op != NULL) {
if (screen->tc_se != NULL &&
!strcmp(screen->tc_op, screen->tc_se))
screen->mask_op &= ~__STANDOUT;
if (screen->tc_ue != NULL &&
!strcmp(screen->tc_op, screen->tc_ue))
screen->mask_op &= ~__UNDERSCORE;
if (screen->tc_me != NULL &&
!strcmp(screen->tc_op, screen->tc_me))
screen->mask_op &= ~__TERMATTR;
}
screen->mask_me = __ATTRIBUTES & ~__TERMATTR;
if (screen->tc_me != NULL) {
if (screen->tc_se != NULL &&
!strcmp(screen->tc_me, screen->tc_se))
screen->mask_me &= ~__STANDOUT;
if (screen->tc_ue != NULL &&
!strcmp(screen->tc_me, screen->tc_ue))
screen->mask_me &= ~__UNDERSCORE;
if (screen->tc_op != NULL &&
!strcmp(screen->tc_me, screen->tc_op))
screen->mask_me &= ~__COLOR;
}
screen->mask_ue = __ATTRIBUTES & ~__UNDERSCORE;
if (screen->tc_ue != NULL) {
if (screen->tc_se != NULL &&
!strcmp(screen->tc_ue, screen->tc_se))
screen->mask_ue &= ~__STANDOUT;
if (screen->tc_me != NULL &&
!strcmp(screen->tc_ue, screen->tc_me))
screen->mask_ue &= ~__TERMATTR;
if (screen->tc_op != NULL &&
!strcmp(screen->tc_ue, screen->tc_op))
screen->mask_ue &= ~__COLOR;
}
screen->mask_se = __ATTRIBUTES & ~__STANDOUT;
if (screen->tc_se != NULL) {
if (screen->tc_ue != NULL &&
!strcmp(screen->tc_se, screen->tc_ue))
screen->mask_se &= ~__UNDERSCORE;
if (screen->tc_me != NULL &&
!strcmp(screen->tc_se, screen->tc_me))
screen->mask_se &= ~__TERMATTR;
if (screen->tc_op != NULL &&
!strcmp(screen->tc_se, screen->tc_op))
screen->mask_se &= ~__COLOR;
}
return (unknown ? ERR : OK);
}
/*
* _cursesi_resetterm --
* Copy the terminal instance data for the given screen to the global
* variables.
*/
void
_cursesi_resetterm(SCREEN *screen)
{
char ***sp, **scr_sp;
int **vp, *scr_vp, i;
char **fp, *scr_fp;
LINES = screen->LINES;
COLS = screen->COLS;
/* reset terminal capabilities */
fp = sflags;
scr_fp = &screen->tc_am;
for (i = 0; i < screen->flag_count; i++)
*(*fp++) = *scr_fp++;
vp = svals;
scr_vp = &screen->tc_pa;
for (i = 0; i < screen->int_count; i++)
*(*vp++) = *scr_vp++;
sp = sstrs;
scr_sp = &screen->tc_AB;
for (i = 0; i < screen->str_count; i++)
*(*sp++) = *scr_sp++;
__GT = screen->GT;
__CA = screen->CA;
PC = screen->pad_char;
__noqch = screen->noqch;
__mask_op = screen->mask_op;
__mask_me = screen->mask_me;
__mask_ue = screen->mask_ue;
__mask_se = screen->mask_se;
}
/*
* zap --
* Gets all the terminal flags from the termcap database.
*/
static int
zap(SCREEN *screen)
{
const char *nampstr, *namp;
char **sp;
int *vp;
char *fp;
char tmp[3];
#ifdef DEBUG
char *cp;
#endif
tmp[2] = '\0';
namp = "ambsccdaeohchlinmimsncnsosulutxbxnxtxsxx";
fp = &screen->tc_am;
screen->flag_count = 0;
do {
*tmp = *namp;
*(tmp + 1) = *(namp + 1);
*fp++ = t_getflag(screen->cursesi_genbuf, tmp);
#ifdef DEBUG
__CTRACE("%2.2s = %s\n", namp, fp[-1] ? "TRUE" : "FALSE");
#endif
namp += 2;
screen->flag_count++;
} while (*namp);
namp = "paCoNC";
vp = &screen->tc_pa;
screen->int_count = 0;
do {
*tmp = *namp;
*(tmp + 1) = *(namp + 1);
*vp++ = t_getnum(screen->cursesi_genbuf, tmp);
#ifdef DEBUG
__CTRACE("%2.2s = %d\n", namp, *vp[-1]);
#endif
namp += 2;
screen->int_count++;
} while (*namp);
nampstr = "ABacaeAFALalasbcblbtcdceclcmcrcsdcDLdldmDOdoeAedeihoIcicimIpipk0k1k2k3k4k5k6k7k8k9kdkekhklkrkskuLEllmambmdmemhmkmmmompmrndnlocoppcrcRISbscseSFSfsfsospSRsrtatetiucueUPupusvbvevivs";
namp = nampstr;
sp = &screen->tc_AB;
screen->str_count = 0;
do {
*tmp = *namp;
*(tmp + 1) = *(namp + 1);
*sp++ = t_agetstr(screen->cursesi_genbuf, tmp);
#ifdef DEBUG
__CTRACE("%2.2s = %s", namp, *sp[-1] == NULL ? "NULL\n" : "\"");
if (sp[-1] != NULL) {
for (cp = sp[-1]; *cp; cp++)
__CTRACE("%s", unctrl(*cp));
__CTRACE("\"\n");
}
#endif
namp += 2;
screen->str_count++;
} while (*namp);
if (screen->tc_xs)
screen->tc_so = screen->tc_se = NULL;
else {
if (t_getnum(screen->cursesi_genbuf, "sg") > 0)
screen->tc_so = NULL;
if (t_getnum(screen->cursesi_genbuf, "ug") > 0)
screen->tc_us = NULL;
if (!screen->tc_so && screen->tc_us) {
screen->tc_so = screen->tc_us;
screen->tc_se = screen->tc_ue;
}
}
return OK;
}
/*
* getcap --
* Return a capability from termcap.
*/
char *
getcap(char *name)
{
return (t_agetstr(_cursesi_genbuf, name));
}
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