586d4ce109
of the SYSV curses facilities. The added features are the collapsing of arrow and function keysequences (as defined by termcap for the terminal) into symbolic code returns thus relieving the application of recognising multi-character key sequences. Other features are the capability to perform a timed wait for a key (good for when you are not sure if there is a keypress ready or not) and the capability for turning off the inter-key timeout when assembling multi-character function keys. this work was done by Julian Coleman <J.D.Coleman@newcastle.ac.uk> and blymn@baea.com.au (Brett Lymn). i'm just integrating it. thanks HEAPS guys!
243 lines
6.6 KiB
C
243 lines
6.6 KiB
C
/* $NetBSD: setterm.c,v 1.11 1999/04/13 14:08:19 mrg 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 1.11 1999/04/13 14:08:19 mrg 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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static void zap __P((void));
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static char *sflags[] = {
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/* am bs da eo hc in mi ms */
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&AM, &BS, &DA, &EO, &HC, &IN, &MI, &MS,
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/* nc ns os ul xb xn xt xs xx */
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&NC, &NS, &OS, &UL, &XB, &XN, &XT, &XS, &XX
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};
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static char *_PC,
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**sstrs[] = {
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/* AL bc bl bt cd ce cl cm cr */
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&AL, &BC, &BL, &BT, &CD, &CE, &CL, &CM, &CR,
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/* cs dc DL dm do ed ei k0 k1 */
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&CS, &DC, &DL, &DM, &DO, &ED, &EI, &K0, &K1,
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/* k2 k3 k4 k5 k6 k7 k8 k9 ho */
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&K2, &K3, &K4, &K5, &K6, &K7, &K8, &K9, &HO,
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/* ic im ip kd ke kh kl kr ks */
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&IC, &IM, &IP, &KD, &KE, &KH, &KL, &KR, &KS,
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/* ku ll ma mb md me mh mk mp */
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&KU, &LL, &MA, &MB, &MD, &ME, &MH, &MK, &MP,
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/* mr nd nl pc rc sc se SF so */
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&MR, &ND, &NL, &_PC, &RC, &SC, &SE, &SF, &SO,
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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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/* vs ve al dl sf sr AL DL */
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&VS, &VE, &al, &dl, &sf, &sr, &AL_PARM, &DL_PARM,
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/* UP DO LE RI */
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&UP_PARM, &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[2048]; /* Space for capability strings */
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char *ttytype;
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int
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setterm(type)
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char *type;
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{
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static char genbuf[1024];
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static char __ttytype[1024];
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int unknown;
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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 (tgetent(genbuf, type) != 1) {
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unknown++;
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(void)strncpy(genbuf, "xx|dumb:", sizeof(genbuf) - 1);
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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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LINES = tgetnum("li");
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COLS = tgetnum("co");
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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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aoftspace = tspace;
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zap(); /* Get terminal description. */
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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 capbility.
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*
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* XXX
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* This is truly stupid -- historically, tgoto returns "OOPS" if it
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* can't do cursor motions. Some systems have been fixed to return
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* a NULL pointer.
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*/
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if ((p = tgoto(CM, 0, 0)) == NULL || *p == 'O') {
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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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ttytype = longname(genbuf, __ttytype);
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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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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 void
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zap()
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{
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char *namp, ***sp;
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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 = "ambsdaeohcinmimsncnsosulxbxnxtxsxx";
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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++) = tgetflag(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 = "ALbcblbtcdceclcmcrcsdcDLdmdoedeik0k1k2k3k4k5k6k7k8k9hoicimipkdkekhklkrkskullmambmdmemhmkmpmrndnlpcrcscseSFsoSRtatetiucueupusvbvsvealdlsfsrALDLUPDOLERI";
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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++) = tgetstr(tmp, &aoftspace);
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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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{
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__CTRACE("%c", unctrl(*cp));
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}
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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 (tgetnum("sg") > 0)
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SO = NULL;
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if (tgetnum("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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}
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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(name)
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char *name;
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{
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return (tgetstr(name, &aoftspace));
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}
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