371 lines
11 KiB
C
371 lines
11 KiB
C
/* $NetBSD: setterm.c,v 1.28 2000/12/22 17:07:13 jdc Exp $ */
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/*
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* Copyright (c) 1981, 1993, 1994
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)setterm.c 8.8 (Berkeley) 10/25/94";
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#else
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__RCSID("$NetBSD: setterm.c,v 1.28 2000/12/22 17:07:13 jdc Exp $");
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#endif
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#endif /* not lint */
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#include <sys/ioctl.h> /* TIOCGWINSZ on old systems. */
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#include <stdlib.h>
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#include <string.h>
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#include <termios.h>
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#include <unistd.h>
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#include "curses.h"
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#include "curses_private.h"
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static int zap(struct tinfo *tinfo);
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struct tinfo *_cursesi_genbuf;
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static char *sflags[] = {
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/* am bs cc da eo */
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&__tc_am, &__tc_bs, &__tc_cc, &__tc_da, &__tc_eo,
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/* hc hl in mi ms */
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&__tc_hc, &__tc_hl, &__tc_in, &__tc_mi, &__tc_ms,
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/* nc ns os ul ut */
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&__tc_nc, &__tc_ns, &__tc_os, &__tc_ul, &__tc_ut,
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/* xb xn xt xs xx */
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&__tc_xb, &__tc_xn, &__tc_xt, &__tc_xs, &__tc_xx
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};
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static int *svals[] = {
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/* pa Co NC */
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&__tc_pa, &__tc_Co, &__tc_NC
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};
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static char *_PC,
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**sstrs[] = {
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/* AB ac ae AF AL */
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&__tc_AB, &__tc_ac, &__tc_ae, &__tc_AF, &__tc_AL,
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/* al as bc bl bt */
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&__tc_al, &__tc_as, &__tc_bc, &__tc_bl, &__tc_bt,
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/* cd ce cl cm cr */
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&__tc_cd, &__tc_ce, &__tc_cl, &__tc_cm, &__tc_cr,
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/* cs dc DL dl dm */
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&__tc_cs, &__tc_dc, &__tc_DL, &__tc_dl, &__tc_dm,
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/* DO do eA ed ei */
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&__tc_DO, &__tc_do, &__tc_eA, &__tc_ed, &__tc_ei,
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/* ho Ic ic im Ip */
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&__tc_ho, &__tc_Ic, &__tc_ic, &__tc_im, &__tc_Ip,
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/* ip k0 k1 k2 k3 */
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&__tc_ip, &__tc_k0, &__tc_k1, &__tc_k2, &__tc_k3,
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/* k4 k5 k6 k7 k8 */
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&__tc_k4, &__tc_k5, &__tc_k6, &__tc_k7, &__tc_k8,
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/* k9 kd ke kh kl */
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&__tc_k9, &__tc_kd, &__tc_ke, &__tc_kh, &__tc_kl,
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/* kr ks ku LE ll */
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&__tc_kr, &__tc_ks, &__tc_ku, &__tc_LE, &__tc_ll,
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/* ma mb md me mh */
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&__tc_ma, &__tc_mb, &__tc_md, &__tc_me, &__tc_mh,
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/* mk mm mo mp mr */
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&__tc_mk, &__tc_mm, &__tc_mo, &__tc_mp, &__tc_mr,
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/* nd nl oc op pc */
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&__tc_nd, &__tc_nl, &__tc_oc, &__tc_op, &_PC,
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/* rc RI sc Sb se */
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&__tc_rc, &__tc_RI, &__tc_Sb, &__tc_sc, &__tc_se,
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/* SF Sf sf so sp */
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&__tc_SF, &__tc_Sf, &__tc_sf, &__tc_so, &__tc_sp,
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/* SR sr ta te ti */
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&__tc_SR, &__tc_sr, &__tc_ta, &__tc_te, &__tc_ti,
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/* uc ue UP up us */
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&__tc_uc, &__tc_ue, &__tc_UP, &__tc_up, &__tc_us,
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/* vb ve vi vs */
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&__tc_vb, &__tc_ve, &__tc_vi, &__tc_vs
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};
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static char *aoftspace; /* Address of _tspace for relocation */
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static char *tspace; /* Space for capability strings */
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static size_t tspace_size; /* size of tspace */
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char *ttytype;
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attr_t __mask_op, __mask_me, __mask_ue, __mask_se;
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int
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setterm(char *type)
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{
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static char __ttytype[128], cm_buff[1024], tc[1024], *tcptr;
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int unknown;
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size_t limit;
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struct winsize win;
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char *p;
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#ifdef DEBUG
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__CTRACE("setterm: (\"%s\")\nLINES = %d, COLS = %d\n",
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type, LINES, COLS);
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#endif
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if (type[0] == '\0')
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type = "xx";
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unknown = 0;
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if (t_getent(&_cursesi_genbuf, type) != 1) {
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unknown++;
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}
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#ifdef DEBUG
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__CTRACE("setterm: tty = %s\n", type);
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#endif
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/* Try TIOCGWINSZ, and, if it fails, the termcap entry. */
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if (ioctl(STDERR_FILENO, TIOCGWINSZ, &win) != -1 &&
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win.ws_row != 0 && win.ws_col != 0) {
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LINES = win.ws_row;
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COLS = win.ws_col;
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} else {
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if (unknown) {
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LINES = -1;
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COLS = -1;
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} else {
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LINES = t_getnum(_cursesi_genbuf, "li");
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COLS = t_getnum(_cursesi_genbuf, "co");
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}
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}
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/* POSIX 1003.2 requires that the environment override. */
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if ((p = getenv("LINES")) != NULL)
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LINES = (int) strtol(p, NULL, 10);
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if ((p = getenv("COLUMNS")) != NULL)
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COLS = (int) strtol(p, NULL, 10);
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/*
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* Want cols > 4, otherwise things will fail.
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*/
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if (COLS <= 4)
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return (ERR);
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#ifdef DEBUG
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__CTRACE("setterm: LINES = %d, COLS = %d\n", LINES, COLS);
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#endif
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if (!unknown) {
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if (zap(_cursesi_genbuf) == ERR) /* Get terminal description.*/
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return ERR;
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}
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/* If we can't tab, we can't backtab, either. */
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if (!__GT)
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__tc_bt = NULL;
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/*
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* Test for cursor motion capability.
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*
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*/
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if (t_goto(NULL, __tc_cm, 0, 0, cm_buff, 1023) < 0) {
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__CA = 0;
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__tc_cm = 0;
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} else
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__CA = 1;
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PC = _PC ? _PC[0] : 0;
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aoftspace = tspace;
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if (unknown) {
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strcpy(ttytype, "dumb");
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} else {
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tcptr = tc;
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limit = 1023;
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if (t_getterm(_cursesi_genbuf, &tcptr, &limit) < 0)
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return ERR;
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ttytype = __longname(tc, __ttytype);
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}
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/* If no scrolling commands, no quick change. */
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__noqch =
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(__tc_cs == NULL || __tc_ho == NULL ||
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(__tc_SF == NULL && __tc_sf == NULL) || (__tc_SR == NULL && __tc_sr == NULL)) &&
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((__tc_AL == NULL && __tc_al == NULL) || (__tc_DL == NULL && __tc_dl == NULL));
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/* Precalculate conflict info for color/attribute end commands. */
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__mask_op = __ATTRIBUTES & ~__COLOR;
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if (__tc_op != NULL) {
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if (__tc_se != NULL && !strcmp(__tc_op, __tc_se))
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__mask_op &= ~__STANDOUT;
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if (__tc_ue != NULL && !strcmp(__tc_op, __tc_ue))
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__mask_op &= ~__UNDERSCORE;
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if (__tc_me != NULL && !strcmp(__tc_op, __tc_me))
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__mask_op &= ~__TERMATTR;
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}
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__mask_me = __ATTRIBUTES & ~__TERMATTR;
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if (__tc_me != NULL) {
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if (__tc_se != NULL && !strcmp(__tc_me, __tc_se))
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__mask_me &= ~__STANDOUT;
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if (__tc_ue != NULL && !strcmp(__tc_me, __tc_ue))
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__mask_me &= ~__UNDERSCORE;
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if (__tc_op != NULL && !strcmp(__tc_me, __tc_op))
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__mask_me &= ~__COLOR;
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}
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__mask_ue = __ATTRIBUTES & ~__UNDERSCORE;
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if (__tc_ue != NULL) {
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if (__tc_se != NULL && !strcmp(__tc_ue, __tc_se))
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__mask_ue &= ~__STANDOUT;
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if (__tc_me != NULL && !strcmp(__tc_ue, __tc_me))
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__mask_ue &= ~__TERMATTR;
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if (__tc_op != NULL && !strcmp(__tc_ue, __tc_op))
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__mask_ue &= ~__COLOR;
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}
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__mask_se = __ATTRIBUTES & ~__STANDOUT;
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if (__tc_se != NULL) {
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if (__tc_ue != NULL && !strcmp(__tc_se, __tc_ue))
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__mask_se &= ~__UNDERSCORE;
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if (__tc_me != NULL && !strcmp(__tc_se, __tc_me))
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__mask_se &= ~__TERMATTR;
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if (__tc_op != NULL && !strcmp(__tc_se, __tc_op))
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__mask_se &= ~__COLOR;
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}
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return (unknown ? ERR : OK);
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}
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/*
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* zap --
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* Gets all the terminal flags from the termcap database.
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*/
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static int
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zap(struct tinfo *tinfo)
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{
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const char *nampstr, *namp;
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char ***sp;
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int **vp;
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char **fp;
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char tmp[3];
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size_t i;
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#ifdef DEBUG
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char *cp;
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#endif
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tmp[2] = '\0';
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namp = "ambsccdaeohchlinmimsncnsosulutxbxnxtxsxx";
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fp = sflags;
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do {
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*tmp = *namp;
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*(tmp + 1) = *(namp + 1);
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*(*fp++) = t_getflag(tinfo, tmp);
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#ifdef DEBUG
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__CTRACE("%2.2s = %s\n", namp, *fp[-1] ? "TRUE" : "FALSE");
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#endif
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namp += 2;
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} while (*namp);
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namp = "paCoNC";
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vp = svals;
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do {
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*tmp = *namp;
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*(tmp + 1) = *(namp + 1);
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*(*vp++) = t_getnum(tinfo, tmp);
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#ifdef DEBUG
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__CTRACE("%2.2s = %d\n", namp, *vp[-1]);
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#endif
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namp += 2;
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} while (*namp);
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/* calculate the size of tspace.... */
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nampstr = "ABacaeAFALalasbcblbtcdceclcmcrcsdcDLdldmDOdoeAedeihoIcicimIpipk0k1k2k3k4k5k6k7k8k9kdkekhklkrkskuLEllmambmdmemhmkmmmompmrndnlocoppcrcRISbscseSFSfsfsospSRsrtatetiucueUPupusvbvevivs";
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namp = nampstr;
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tspace_size = 0;
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do {
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*tmp = *namp;
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*(tmp + 1) = *(namp + 1);
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t_getstr(tinfo, tmp, NULL, &i);
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tspace_size += i + 1;
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namp += 2;
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} while (*namp);
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if ((tspace = (char *) malloc(tspace_size)) == NULL)
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return ERR;
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#ifdef DEBUG
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__CTRACE("Allocated %d (0x%x) size buffer for tspace\n", tspace_size,
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tspace_size);
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#endif
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aoftspace = tspace;
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namp = nampstr;
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sp = sstrs;
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do {
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*tmp = *namp;
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*(tmp + 1) = *(namp + 1);
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*(*sp++) = t_getstr(tinfo, tmp, &aoftspace, NULL);
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#ifdef DEBUG
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__CTRACE("%2.2s = %s", namp, *sp[-1] == NULL ? "NULL\n" : "\"");
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if (*sp[-1] != NULL) {
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for (cp = *sp[-1]; *cp; cp++)
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__CTRACE("%s", unctrl(*cp));
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__CTRACE("\"\n");
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}
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#endif
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namp += 2;
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} while (*namp);
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if (__tc_xs)
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__tc_so = __tc_se = NULL;
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else {
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if (t_getnum(tinfo, "sg") > 0)
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__tc_so = NULL;
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if (t_getnum(tinfo, "ug") > 0)
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__tc_us = NULL;
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if (!__tc_so && __tc_us) {
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__tc_so = __tc_us;
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__tc_se = __tc_ue;
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}
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}
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return OK;
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}
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/*
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* getcap --
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* Return a capability from termcap.
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*/
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char *
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getcap(char *name)
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{
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size_t ent_size, offset;
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char *new_tspace;
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/* verify cap exists and grab size of it at the same time */
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t_getstr(_cursesi_genbuf, name, NULL, &ent_size);
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/* grow tspace to hold the new cap */
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if ((new_tspace = realloc(tspace, ent_size + tspace_size)) == NULL)
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return NULL;
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/* point aoftspace to the same place in the newly allocated buffer */
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offset = aoftspace - tspace;
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tspace = new_tspace + offset;
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return (t_getstr(_cursesi_genbuf, name, &aoftspace, NULL));
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}
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