355 lines
9.5 KiB
C
355 lines
9.5 KiB
C
/* $NetBSD: setterm.c,v 1.26 2000/06/12 21:04:08 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 1.26 2000/06/12 21:04:08 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 ut bs cc da eo hc hl */
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&AM, &UT, &BS, &CC, &DA, &EO, &HC, &HL,
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/* in mi ms nc ns os ul xb */
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&IN, &MI, &MS, &NC, &NS, &OS, &UL, &XB,
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/* xn xt xs xx */
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&XN, &XT, &XS, &XX
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};
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static int *svals[] = {
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/* pa Co */
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&PA, &cO, &nc
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};
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static char *_PC,
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**sstrs[] = {
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/* AC AE AL AS bc bl bt cd ce */
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&AC, &AE, &AL, &AS, &BC, &BL, &BT, &CD, &CE,
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/* cl cm cr cs dc DL dm do eA */
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&CL, &CM, &CR, &CS, &DC, &DL, &DM, &DO, &Ea,
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/* ed ei k0 k1 k2 k3 k4 k5 k6 */
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&ED, &EI, &K0, &K1, &K2, &K3, &K4, &K5, &K6,
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/* k7 k8 k9 ho ic im ip kd ke */
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&K7, &K8, &K9, &HO, &IC, &IM, &IP, &KD, &KE,
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/* kh kl kr ks ku ll ma mb md */
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&KH, &KL, &KR, &KS, &KU, &LL, &MA, &MB, &MD,
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/* me mh mk mm mo mp mr nd nl */
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&ME, &MH, &MK, &MM, &MO, &MP, &MR, &ND, &NL,
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/* oc op pc rc sc se SF so sp */
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&OC, &OP, &_PC, &RC, &SC, &SE, &SF, &SO, &SP,
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/* SR ta te ti uc ue up us vb */
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&SR, &TA, &TE, &TI, &UC, &UE, &UP, &US, &VB,
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/* vi vs ve AB AF al dl Ic Ip */
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&VI, &VS, &VE, &ab, &af, &al, &dl, &iC, &iP,
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/* Sb Sf sf sr AL DL UP */
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&sB, &sF, &sf, &sr, &AL_PARM, &DL_PARM, &UP_PARM,
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/* DO LE RI */
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&DOWN_PARM, &LEFT_PARM, &RIGHT_PARM,
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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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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, CM, 0, 0, cm_buff, 1023) < 0) {
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CA = 0;
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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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(CS == NULL || HO == NULL ||
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(SF == NULL && sf == NULL) || (SR == NULL && sr == NULL)) &&
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((AL == NULL && al == NULL) || (DL == NULL && 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 (OP != NULL) {
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if (SE != NULL && !strcmp(OP, SE))
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__mask_OP &= ~__STANDOUT;
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if (UE != NULL && !strcmp(OP, UE))
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__mask_OP &= ~__UNDERSCORE;
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if (ME != NULL && !strcmp(OP, 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 (ME != NULL) {
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if (SE != NULL && !strcmp(ME, SE))
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__mask_ME &= ~__STANDOUT;
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if (UE != NULL && !strcmp(ME, UE))
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__mask_ME &= ~__UNDERSCORE;
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if (OP != NULL && !strcmp(ME, 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 (UE != NULL) {
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if (SE != NULL && !strcmp(UE, SE))
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__mask_UE &= ~__STANDOUT;
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if (ME != NULL && !strcmp(UE, ME))
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__mask_UE &= ~__TERMATTR;
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if (OP != NULL && !strcmp(UE, 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 (SE != NULL) {
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if (UE != NULL && !strcmp(SE, UE))
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__mask_SE &= ~__UNDERSCORE;
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if (ME != NULL && !strcmp(SE, ME))
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__mask_SE &= ~__TERMATTR;
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if (OP != NULL && !strcmp(SE, 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 = "amutbsccdaeohchlinmimsncnsosulxbxnxtxsxx";
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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 = "acaeALasbcblbtcdceclcmcrcsdcDLdmdoeAedeik0k1k2k3k4k5k6k7k8k9hoicimipkdkekhklkrkskullmambmdmemhmkmmmompmrndnlocoppcprscseSFsospSRtatetiucueupusvbvivsveABAFaldlIcIpSbSfsfsrALDLUPDOLERI";
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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 (XS)
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SO = SE = NULL;
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else {
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if (t_getnum(tinfo, "sg") > 0)
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SO = NULL;
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if (t_getnum(tinfo, "ug") > 0)
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US = NULL;
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if (!SO && US) {
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SO = US;
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SE = 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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