519 lines
14 KiB
C
519 lines
14 KiB
C
/* $NetBSD: setterm.c,v 1.38 2003/10/21 00:30:05 fvdl 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. 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 1.38 2003/10/21 00:30:05 fvdl 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(SCREEN *screen);
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static int does_esc_m(char *cap);
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static int does_ctrl_o(char *cap);
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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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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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return _cursesi_setterm(type, _cursesi_screen);
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}
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int
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_cursesi_setterm(char *type, SCREEN *screen)
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{
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int unknown;
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struct winsize win;
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char *p;
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char cm_buff[64];
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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(&screen->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(fileno(screen->outfd), TIOCGWINSZ, &win) != -1 &&
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win.ws_row != 0 && win.ws_col != 0) {
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screen->LINES = win.ws_row;
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screen->COLS = win.ws_col;
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} else {
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if (unknown) {
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screen->LINES = -1;
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screen->COLS = -1;
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} else {
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screen->LINES = t_getnum(screen->cursesi_genbuf, "li");
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screen->COLS = t_getnum(screen->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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screen->LINES = (int) strtol(p, NULL, 10);
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if ((p = getenv("COLUMNS")) != NULL)
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screen->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 (screen->COLS <= 4)
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return (ERR);
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LINES = screen->LINES;
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COLS = screen->COLS;
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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(screen) == 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 (!screen->GT)
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screen->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, screen->tc_cm, 0, 0, cm_buff, sizeof(cm_buff) - 1) < 0) {
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screen->CA = 0;
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screen->tc_cm = 0;
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} else
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screen->CA = 1;
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/*
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* set the pad char, only take the first char of the pc capability
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* as this is all we can use.
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*/
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screen->pad_char = screen->tc_pc ? screen->tc_pc[0] : 0;
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/* Get full name of terminal */
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if (unknown) {
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strcpy(screen->ttytype, "dumb");
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} else {
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char *tcptr;
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size_t limit = 0;
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if (t_getterm(screen->cursesi_genbuf, 0, &limit))
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return ERR;
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if ((tcptr = malloc(limit + 1)) == NULL)
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return ERR;
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if (t_getterm(screen->cursesi_genbuf, &tcptr, 0) < 0)
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return ERR;
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__longname(tcptr, screen->ttytype);
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free(tcptr);
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}
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/* If no scrolling commands, no quick change. */
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screen->noqch =
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(screen->tc_cs == NULL || screen->tc_ho == NULL ||
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(screen->tc_SF == NULL && screen->tc_sf == NULL) ||
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(screen->tc_SR == NULL && screen->tc_sr == NULL)) &&
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((screen->tc_AL == NULL && screen->tc_al == NULL) ||
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(screen->tc_DL == NULL && screen->tc_dl == NULL));
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/*
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* Precalculate conflict info for color/attribute end commands.
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*/
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screen->mask_op = __ATTRIBUTES & ~__COLOR;
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if (screen->tc_op != NULL) {
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if (does_esc_m(screen->tc_op))
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screen->mask_op &=
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~(__STANDOUT | __UNDERSCORE | __TERMATTR);
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else {
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if (screen->tc_se != NULL &&
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!strcmp(screen->tc_op, screen->tc_se))
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screen->mask_op &= ~__STANDOUT;
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if (screen->tc_ue != NULL &&
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!strcmp(screen->tc_op, screen->tc_ue))
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screen->mask_op &= ~__UNDERSCORE;
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if (screen->tc_me != NULL &&
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!strcmp(screen->tc_op, screen->tc_me))
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screen->mask_op &= ~__TERMATTR;
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}
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}
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/*
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* Assume that "me" turns off all attributes apart from ACS.
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* It might turn off ACS, so check for that.
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*/
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if (screen->tc_me != NULL && does_ctrl_o(screen->tc_me))
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screen->mask_me = 0;
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else
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screen->mask_me = __ALTCHARSET;
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/* Check what turning off the attributes also turns off */
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screen->mask_ue = __ATTRIBUTES & ~__UNDERSCORE;
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if (screen->tc_ue != NULL) {
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if (does_esc_m(screen->tc_ue))
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screen->mask_ue &=
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~(__STANDOUT | __TERMATTR | __COLOR);
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else {
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if (screen->tc_se != NULL &&
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!strcmp(screen->tc_ue, screen->tc_se))
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screen->mask_ue &= ~__STANDOUT;
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if (screen->tc_me != NULL &&
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!strcmp(screen->tc_ue, screen->tc_me))
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screen->mask_ue &= ~__TERMATTR;
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if (screen->tc_op != NULL &&
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!strcmp(screen->tc_ue, screen->tc_op))
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screen->mask_ue &= ~__COLOR;
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}
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}
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screen->mask_se = __ATTRIBUTES & ~__STANDOUT;
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if (screen->tc_se != NULL) {
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if (does_esc_m(screen->tc_se))
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screen->mask_se &=
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~(__UNDERSCORE | __TERMATTR | __COLOR);
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else {
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if (screen->tc_ue != NULL &&
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!strcmp(screen->tc_se, screen->tc_ue))
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screen->mask_se &= ~__UNDERSCORE;
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if (screen->tc_me != NULL &&
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!strcmp(screen->tc_se, screen->tc_me))
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screen->mask_se &= ~__TERMATTR;
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if (screen->tc_op != NULL &&
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!strcmp(screen->tc_se, screen->tc_op))
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screen->mask_se &= ~__COLOR;
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}
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}
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return (unknown ? ERR : OK);
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}
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/*
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* _cursesi_resetterm --
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* Copy the terminal instance data for the given screen to the global
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* variables.
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*/
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void
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_cursesi_resetterm(SCREEN *screen)
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{
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char ***sp, **scr_sp;
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int **vp, *scr_vp, i;
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char **fp, *scr_fp;
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LINES = screen->LINES;
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COLS = screen->COLS;
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/* reset terminal capabilities */
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fp = sflags;
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scr_fp = &screen->tc_am;
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for (i = 0; i < screen->flag_count; i++)
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*(*fp++) = *scr_fp++;
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vp = svals;
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scr_vp = &screen->tc_pa;
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for (i = 0; i < screen->int_count; i++)
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*(*vp++) = *scr_vp++;
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sp = sstrs;
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scr_sp = &screen->tc_AB;
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for (i = 0; i < screen->str_count; i++)
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*(*sp++) = *scr_sp++;
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__GT = screen->GT;
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__CA = screen->CA;
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PC = screen->pad_char;
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__noqch = screen->noqch;
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__mask_op = screen->mask_op;
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__mask_me = screen->mask_me;
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__mask_ue = screen->mask_ue;
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__mask_se = screen->mask_se;
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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(SCREEN *screen)
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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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#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 = &screen->tc_am;
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screen->flag_count = 0;
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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(screen->cursesi_genbuf, 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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screen->flag_count++;
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} while (*namp);
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namp = "paCoNC";
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vp = &screen->tc_pa;
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screen->int_count = 0;
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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(screen->cursesi_genbuf, 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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screen->int_count++;
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} while (*namp);
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nampstr = "ABacaeAFALalasbcblbtcdceclcmcrcsdcDLdldmDOdoeAedeihoIcicimIpipk0k1k2k3k4k5k6k7k8k9kdkekhklkrkskuLEllmambmdmemhmkmmmompmrndnlocoppcrcRISbscseSFSfsfsospSRsrtatetiucueUPupusvbvevivs";
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namp = nampstr;
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sp = &screen->tc_AB;
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screen->str_count = 0;
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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_agetstr(screen->cursesi_genbuf, tmp);
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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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screen->str_count++;
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} while (*namp);
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if (screen->tc_xs)
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screen->tc_so = screen->tc_se = NULL;
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else {
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if (t_getnum(screen->cursesi_genbuf, "sg") > 0)
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screen->tc_so = NULL;
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if (t_getnum(screen->cursesi_genbuf, "ug") > 0)
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screen->tc_us = NULL;
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if (!screen->tc_so && screen->tc_us) {
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screen->tc_so = screen->tc_us;
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screen->tc_se = screen->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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return (t_agetstr(_cursesi_genbuf, name));
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}
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/*
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* does_esc_m --
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* A hack for xterm-like terminals where "\E[m" or "\E[0m" will turn off
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* other attributes, so we check for this in the capability passed to us.
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* Note that we can't just do simple string comparison, as the capability
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* may contain multiple, ';' separated sequence parts.
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*/
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static int
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does_esc_m(char *cap)
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{
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#define WAITING 0
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#define PARSING 1
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#define NUMBER 2
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#define FOUND 4
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char *capptr;
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int seq;
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#ifdef DEBUG
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__CTRACE("does_esc_m: Checking %s\n", cap);
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#endif
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/* Is it just "\E[m" or "\E[0m"? */
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if (!strcmp(cap, "\x1b[m") || !strcmp(cap, "\x1b[0m"))
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return 1;
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/* Does it contain a "\E[...m" sequence? */
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if (strlen(cap) < 4)
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return 0;
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capptr = cap;
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seq = WAITING;
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while (*capptr != 0) {
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switch (seq) {
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/* Start of sequence */
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case WAITING:
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if (!strncmp(capptr, "\x1b[", 2)) {
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capptr+=2;
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if (*capptr == 'm')
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return 1;
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else {
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seq=PARSING;
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continue;
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}
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}
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break;
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/* Looking for '0' */
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case PARSING:
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if (*capptr == '0')
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seq=FOUND;
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else if (*capptr > '0' && *capptr <= '9')
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seq=NUMBER;
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else if (*capptr != ';')
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seq=WAITING;
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break;
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/* Some other number */
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case NUMBER:
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if (*capptr == ';')
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seq=PARSING;
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else if (!(*capptr >= '0' && *capptr <= '9'))
|
|
seq=WAITING;
|
|
break;
|
|
/* Found a '0' */
|
|
case FOUND:
|
|
if (*capptr == 'm')
|
|
return 1;
|
|
else if (!((*capptr >= '0' && *capptr <= '9') ||
|
|
*capptr == ';'))
|
|
seq=WAITING;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
capptr++;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* does_ctrl_o --
|
|
* A hack for vt100/xterm-like terminals where the "me" capability also
|
|
* unsets acs (i.e. it contains the character '\017').
|
|
*/
|
|
static int
|
|
does_ctrl_o(char *cap)
|
|
{
|
|
char *capptr = cap;
|
|
|
|
#ifdef DEBUG
|
|
__CTRACE("does_ctrl_o: Looping on %s\n", capptr);
|
|
#endif
|
|
while (*capptr != 0) {
|
|
if (*capptr == '\x0f')
|
|
return 1;
|
|
capptr++;
|
|
}
|
|
return 0;
|
|
}
|