1*7c478bd9Sstevel@tonic-gate /*
2*7c478bd9Sstevel@tonic-gate  * CDDL HEADER START
3*7c478bd9Sstevel@tonic-gate  *
4*7c478bd9Sstevel@tonic-gate  * The contents of this file are subject to the terms of the
5*7c478bd9Sstevel@tonic-gate  * Common Development and Distribution License, Version 1.0 only
6*7c478bd9Sstevel@tonic-gate  * (the "License").  You may not use this file except in compliance
7*7c478bd9Sstevel@tonic-gate  * with the License.
8*7c478bd9Sstevel@tonic-gate  *
9*7c478bd9Sstevel@tonic-gate  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*7c478bd9Sstevel@tonic-gate  * or http://www.opensolaris.org/os/licensing.
11*7c478bd9Sstevel@tonic-gate  * See the License for the specific language governing permissions
12*7c478bd9Sstevel@tonic-gate  * and limitations under the License.
13*7c478bd9Sstevel@tonic-gate  *
14*7c478bd9Sstevel@tonic-gate  * When distributing Covered Code, include this CDDL HEADER in each
15*7c478bd9Sstevel@tonic-gate  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*7c478bd9Sstevel@tonic-gate  * If applicable, add the following below this CDDL HEADER, with the
17*7c478bd9Sstevel@tonic-gate  * fields enclosed by brackets "[]" replaced with your own identifying
18*7c478bd9Sstevel@tonic-gate  * information: Portions Copyright [yyyy] [name of copyright owner]
19*7c478bd9Sstevel@tonic-gate  *
20*7c478bd9Sstevel@tonic-gate  * CDDL HEADER END
21*7c478bd9Sstevel@tonic-gate  */
22*7c478bd9Sstevel@tonic-gate /*
23*7c478bd9Sstevel@tonic-gate  * Copyright (c) 1995, by Sun Microsystems, Inc.
24*7c478bd9Sstevel@tonic-gate  * All rights reserved.
25*7c478bd9Sstevel@tonic-gate  */
26*7c478bd9Sstevel@tonic-gate 
27*7c478bd9Sstevel@tonic-gate #pragma ident	"%Z%%M%	%I%	%E% SMI"
28*7c478bd9Sstevel@tonic-gate 
29*7c478bd9Sstevel@tonic-gate /*
30*7c478bd9Sstevel@tonic-gate  * newterm.c
31*7c478bd9Sstevel@tonic-gate  *
32*7c478bd9Sstevel@tonic-gate  * XCurses Library
33*7c478bd9Sstevel@tonic-gate  *
34*7c478bd9Sstevel@tonic-gate  * Copyright 1990, 1995 by Mortice Kern Systems Inc.  All rights reserved.
35*7c478bd9Sstevel@tonic-gate  *
36*7c478bd9Sstevel@tonic-gate  */
37*7c478bd9Sstevel@tonic-gate 
38*7c478bd9Sstevel@tonic-gate #ifdef M_RCSID
39*7c478bd9Sstevel@tonic-gate #ifndef lint
40*7c478bd9Sstevel@tonic-gate static char const rcsID[] = "$Header: /rd/src/libc/xcurses/rcs/newterm.c 1.15 1995/07/25 19:54:00 ant Exp $";
41*7c478bd9Sstevel@tonic-gate #endif
42*7c478bd9Sstevel@tonic-gate #endif
43*7c478bd9Sstevel@tonic-gate 
44*7c478bd9Sstevel@tonic-gate #include <private.h>
45*7c478bd9Sstevel@tonic-gate #include <m_wio.h>
46*7c478bd9Sstevel@tonic-gate #include <errno.h>
47*7c478bd9Sstevel@tonic-gate #include <signal.h>
48*7c478bd9Sstevel@tonic-gate #include <stdlib.h>
49*7c478bd9Sstevel@tonic-gate #include <string.h>
50*7c478bd9Sstevel@tonic-gate 
51*7c478bd9Sstevel@tonic-gate int LINES, COLS;
52*7c478bd9Sstevel@tonic-gate int COLORS, COLOR_PAIRS;
53*7c478bd9Sstevel@tonic-gate 
54*7c478bd9Sstevel@tonic-gate WINDOW *curscr;
55*7c478bd9Sstevel@tonic-gate WINDOW *stdscr;
56*7c478bd9Sstevel@tonic-gate SCREEN *__m_screen;
57*7c478bd9Sstevel@tonic-gate 
58*7c478bd9Sstevel@tonic-gate static short assume_one_line = FALSE;
59*7c478bd9Sstevel@tonic-gate 
60*7c478bd9Sstevel@tonic-gate /*
61*7c478bd9Sstevel@tonic-gate  * Assume terminal has only one screen line by restricting those
62*7c478bd9Sstevel@tonic-gate  * capabilities that assume more than one line.  This function must
63*7c478bd9Sstevel@tonic-gate  * be called before initscr() or newterm().
64*7c478bd9Sstevel@tonic-gate  *
65*7c478bd9Sstevel@tonic-gate  * This flag will reset after initscr() or newterm() so that subsequent
66*7c478bd9Sstevel@tonic-gate  * calls to newterm(), without a preceding call to filter(), will load
67*7c478bd9Sstevel@tonic-gate  * an unmodified terminal.  THIS IS NOT HISTORICAL PRACTICE, BUT DEEMED
68*7c478bd9Sstevel@tonic-gate  * USEFUL.
69*7c478bd9Sstevel@tonic-gate  */
70*7c478bd9Sstevel@tonic-gate void
filter(void)71*7c478bd9Sstevel@tonic-gate filter(void)
72*7c478bd9Sstevel@tonic-gate {
73*7c478bd9Sstevel@tonic-gate #ifdef M_CURSES_TRACE
74*7c478bd9Sstevel@tonic-gate 	__m_trace("filter(void)");
75*7c478bd9Sstevel@tonic-gate #endif
76*7c478bd9Sstevel@tonic-gate 	assume_one_line = TRUE;
77*7c478bd9Sstevel@tonic-gate 	__m_return_void("filter");
78*7c478bd9Sstevel@tonic-gate }
79*7c478bd9Sstevel@tonic-gate 
80*7c478bd9Sstevel@tonic-gate /*f
81*7c478bd9Sstevel@tonic-gate  * SIGTSTP Handler.
82*7c478bd9Sstevel@tonic-gate  */
83*7c478bd9Sstevel@tonic-gate void
tstp(signo)84*7c478bd9Sstevel@tonic-gate tstp(signo)
85*7c478bd9Sstevel@tonic-gate int signo;
86*7c478bd9Sstevel@tonic-gate {
87*7c478bd9Sstevel@tonic-gate #ifdef SIGTSTP
88*7c478bd9Sstevel@tonic-gate 	/* Only permit SIGTSTP if the curent process is the process
89*7c478bd9Sstevel@tonic-gate 	 * group leader.  If the process is not the current group
90*7c478bd9Sstevel@tonic-gate 	 * leader, then suspending the current process will suspend
91*7c478bd9Sstevel@tonic-gate 	 * other members of the process group, such as the parent
92*7c478bd9Sstevel@tonic-gate 	 * process.
93*7c478bd9Sstevel@tonic-gate 	 */
94*7c478bd9Sstevel@tonic-gate 	if (getpid() == getpgrp()) {
95*7c478bd9Sstevel@tonic-gate 		(void) endwin();
96*7c478bd9Sstevel@tonic-gate 
97*7c478bd9Sstevel@tonic-gate #ifdef SIG_UNBLOCK
98*7c478bd9Sstevel@tonic-gate {
99*7c478bd9Sstevel@tonic-gate 		sigset_t unblock;
100*7c478bd9Sstevel@tonic-gate 
101*7c478bd9Sstevel@tonic-gate 		(void) sigemptyset(&unblock);
102*7c478bd9Sstevel@tonic-gate 		(void) sigaddset(&unblock, SIGTSTP);
103*7c478bd9Sstevel@tonic-gate 		(void) sigprocmask(SIG_UNBLOCK, &unblock, (sigset_t *) 0);
104*7c478bd9Sstevel@tonic-gate }
105*7c478bd9Sstevel@tonic-gate #endif /* SIG_UNBLOCK */
106*7c478bd9Sstevel@tonic-gate 		(void) signal(SIGTSTP, SIG_DFL);
107*7c478bd9Sstevel@tonic-gate 		(void) kill(0, SIGTSTP);
108*7c478bd9Sstevel@tonic-gate 	} else {
109*7c478bd9Sstevel@tonic-gate 		(void) beep();
110*7c478bd9Sstevel@tonic-gate 	}
111*7c478bd9Sstevel@tonic-gate 
112*7c478bd9Sstevel@tonic-gate 	(void) signal(SIGTSTP, tstp);
113*7c478bd9Sstevel@tonic-gate 	(void) wrefresh(curscr);
114*7c478bd9Sstevel@tonic-gate #else /* no SIGTSTP */
115*7c478bd9Sstevel@tonic-gate 	(void) beep();
116*7c478bd9Sstevel@tonic-gate #endif /* SIGTSTP */
117*7c478bd9Sstevel@tonic-gate }
118*7c478bd9Sstevel@tonic-gate 
119*7c478bd9Sstevel@tonic-gate int __m_slk_format = -1;
120*7c478bd9Sstevel@tonic-gate 
121*7c478bd9Sstevel@tonic-gate /*
122*7c478bd9Sstevel@tonic-gate  * Do real soft label key initialisation once setupterm() have been called
123*7c478bd9Sstevel@tonic-gate  * to load the current terminal.  Determine whether the terminal supplies
124*7c478bd9Sstevel@tonic-gate  * soft label keys, or whether we have to fake it by using the last line
125*7c478bd9Sstevel@tonic-gate  * of a terminal screen.
126*7c478bd9Sstevel@tonic-gate  */
127*7c478bd9Sstevel@tonic-gate int
__m_slk_init(SCREEN * sp,int style)128*7c478bd9Sstevel@tonic-gate __m_slk_init(SCREEN *sp, int style)
129*7c478bd9Sstevel@tonic-gate {
130*7c478bd9Sstevel@tonic-gate 	int code;
131*7c478bd9Sstevel@tonic-gate 
132*7c478bd9Sstevel@tonic-gate #ifdef M_CURSES_TRACE
133*7c478bd9Sstevel@tonic-gate 	__m_trace("__m_slk_init(%d)", style );
134*7c478bd9Sstevel@tonic-gate #endif
135*7c478bd9Sstevel@tonic-gate 
136*7c478bd9Sstevel@tonic-gate 	code = ERR;
137*7c478bd9Sstevel@tonic-gate 
138*7c478bd9Sstevel@tonic-gate 	/* Does the terminal have a method to program the soft label key? */
139*7c478bd9Sstevel@tonic-gate 	if (plab_norm != (char *) 0 || pkey_plab  != (char *) 0) {
140*7c478bd9Sstevel@tonic-gate 		code = OK;
141*7c478bd9Sstevel@tonic-gate 		goto done;
142*7c478bd9Sstevel@tonic-gate 	}
143*7c478bd9Sstevel@tonic-gate 
144*7c478bd9Sstevel@tonic-gate 	/* We have to fake it. */
145*7c478bd9Sstevel@tonic-gate 	if (lines < 2)
146*7c478bd9Sstevel@tonic-gate 		goto done;
147*7c478bd9Sstevel@tonic-gate 
148*7c478bd9Sstevel@tonic-gate 	sp->_slk._w = subwin(sp->_newscr, 1, 0, --lines, 0);
149*7c478bd9Sstevel@tonic-gate 	if (sp->_slk._w == (WINDOW *) 0)
150*7c478bd9Sstevel@tonic-gate 		goto done;
151*7c478bd9Sstevel@tonic-gate 
152*7c478bd9Sstevel@tonic-gate 	code = OK;
153*7c478bd9Sstevel@tonic-gate done:
154*7c478bd9Sstevel@tonic-gate 	return __m_return_code("__m_slk_init", code);
155*7c478bd9Sstevel@tonic-gate }
156*7c478bd9Sstevel@tonic-gate 
157*7c478bd9Sstevel@tonic-gate /*
158*7c478bd9Sstevel@tonic-gate  * The XCurses specification is unclear how ripoffline() would
159*7c478bd9Sstevel@tonic-gate  * affect newterm().  We assume that it can't be used with newterm()
160*7c478bd9Sstevel@tonic-gate  * and that it only affects initscr(), which is responsible for
161*7c478bd9Sstevel@tonic-gate  * creating stdscr.
162*7c478bd9Sstevel@tonic-gate  */
163*7c478bd9Sstevel@tonic-gate static t_rip rip = { 0 };
164*7c478bd9Sstevel@tonic-gate 
165*7c478bd9Sstevel@tonic-gate /*
166*7c478bd9Sstevel@tonic-gate  * If line is positive (1), one line is removed from the beginning of
167*7c478bd9Sstevel@tonic-gate  * stdscr; else if line is negative (-1), one line is removed from the end.
168*7c478bd9Sstevel@tonic-gate  */
169*7c478bd9Sstevel@tonic-gate int
ripoffline(int line,int (* init)(WINDOW *,int))170*7c478bd9Sstevel@tonic-gate ripoffline(int line, int (*init)(WINDOW *, int))
171*7c478bd9Sstevel@tonic-gate {
172*7c478bd9Sstevel@tonic-gate 	int i;
173*7c478bd9Sstevel@tonic-gate 
174*7c478bd9Sstevel@tonic-gate #ifdef M_CURSES_TRACE
175*7c478bd9Sstevel@tonic-gate 	__m_trace("ripoffline(%d, %p)", line, init);
176*7c478bd9Sstevel@tonic-gate #endif
177*7c478bd9Sstevel@tonic-gate 
178*7c478bd9Sstevel@tonic-gate 	i = rip.top - rip.bottom;
179*7c478bd9Sstevel@tonic-gate 
180*7c478bd9Sstevel@tonic-gate 	if (line != 0 && i + 1 < M_CURSES_MAX_RIPOFFLINE) {
181*7c478bd9Sstevel@tonic-gate 		rip.line[i].init = init;
182*7c478bd9Sstevel@tonic-gate 		if (line < 0)
183*7c478bd9Sstevel@tonic-gate 			rip.line[i].dy = --rip.bottom;
184*7c478bd9Sstevel@tonic-gate 		else
185*7c478bd9Sstevel@tonic-gate 			rip.line[i].dy = ++rip.top;
186*7c478bd9Sstevel@tonic-gate 	}
187*7c478bd9Sstevel@tonic-gate 
188*7c478bd9Sstevel@tonic-gate 	return __m_return_code("ripoffline", OK);
189*7c478bd9Sstevel@tonic-gate }
190*7c478bd9Sstevel@tonic-gate 
191*7c478bd9Sstevel@tonic-gate /*f
192*7c478bd9Sstevel@tonic-gate  * Create a new terminal screen.  Used if a program is going to be sending
193*7c478bd9Sstevel@tonic-gate  * output to more than one terminal.  It returns a SCREEN* for the terminal.
194*7c478bd9Sstevel@tonic-gate  * The parameters are a terminal name, output FILE*, and input FILE*.  If
195*7c478bd9Sstevel@tonic-gate  * the terminal name is null then $TERM is used.  The program must also
196*7c478bd9Sstevel@tonic-gate  * call endwin() for each terminal being used before exiting from curses.
197*7c478bd9Sstevel@tonic-gate  * If newterm() is called more than once for the same terminal, the first
198*7c478bd9Sstevel@tonic-gate  * terminal referred to must be the last one for which endwin() is called.
199*7c478bd9Sstevel@tonic-gate  */
200*7c478bd9Sstevel@tonic-gate SCREEN *
newterm(term,out_fp,in_fp)201*7c478bd9Sstevel@tonic-gate newterm(term, out_fp, in_fp)
202*7c478bd9Sstevel@tonic-gate char *term;
203*7c478bd9Sstevel@tonic-gate FILE *out_fp, *in_fp;
204*7c478bd9Sstevel@tonic-gate {
205*7c478bd9Sstevel@tonic-gate 	WINDOW *w;
206*7c478bd9Sstevel@tonic-gate 	t_wide_io *wio;
207*7c478bd9Sstevel@tonic-gate 	SCREEN *sp, *osp;
208*7c478bd9Sstevel@tonic-gate 	int i, n, y, errret;
209*7c478bd9Sstevel@tonic-gate 
210*7c478bd9Sstevel@tonic-gate #ifdef M_CURSES_TRACE
211*7c478bd9Sstevel@tonic-gate 	__m_trace(
212*7c478bd9Sstevel@tonic-gate 		"newterm(%s, %p, %p)",
213*7c478bd9Sstevel@tonic-gate 		term == (char *) 0 ? "NULL" : term, out_fp, in_fp
214*7c478bd9Sstevel@tonic-gate 	);
215*7c478bd9Sstevel@tonic-gate #endif
216*7c478bd9Sstevel@tonic-gate 
217*7c478bd9Sstevel@tonic-gate 	/* Input stream should be unbuffered so that m_tfgetc() works
218*7c478bd9Sstevel@tonic-gate 	 * correctly on BSD and SUN systems.
219*7c478bd9Sstevel@tonic-gate 	 */
220*7c478bd9Sstevel@tonic-gate 	(void) SETVBUF(in_fp, (char *) 0, _IONBF, BUFSIZ);
221*7c478bd9Sstevel@tonic-gate #if 0
222*7c478bd9Sstevel@tonic-gate /*
223*7c478bd9Sstevel@tonic-gate  * Not sure whether we really want to concern ourselves with the output
224*7c478bd9Sstevel@tonic-gate  * buffer scheme.  Might be best to leave it upto the application to
225*7c478bd9Sstevel@tonic-gate  * deal with buffer schemes and when to perform flushes.
226*7c478bd9Sstevel@tonic-gate  *
227*7c478bd9Sstevel@tonic-gate  * MKS Vi uses MKS Curses and so must support the ability to switch in
228*7c478bd9Sstevel@tonic-gate  * and out of Curses mode when switching from Vi to Ex and back.
229*7c478bd9Sstevel@tonic-gate  * Problem is that in Vi mode you would prefer full buffered output to
230*7c478bd9Sstevel@tonic-gate  * give updates a smoother appearance and Ex mode you require line
231*7c478bd9Sstevel@tonic-gate  * buffered in order to see prompts and messages.
232*7c478bd9Sstevel@tonic-gate  */
233*7c478bd9Sstevel@tonic-gate 	(void) SETVBUF(out_fp, (char *) 0, _IOLBF, BUFSIZ);
234*7c478bd9Sstevel@tonic-gate #endif
235*7c478bd9Sstevel@tonic-gate 	errno = 0;
236*7c478bd9Sstevel@tonic-gate 
237*7c478bd9Sstevel@tonic-gate 	if (__m_setupterm(term, fileno(in_fp), fileno(out_fp), &errret)==ERR) {
238*7c478bd9Sstevel@tonic-gate 		switch (errret) {
239*7c478bd9Sstevel@tonic-gate 		case -1:
240*7c478bd9Sstevel@tonic-gate 			errno = ENOMEM;
241*7c478bd9Sstevel@tonic-gate 			break;
242*7c478bd9Sstevel@tonic-gate 		case 2:
243*7c478bd9Sstevel@tonic-gate 			errno = ENAMETOOLONG;
244*7c478bd9Sstevel@tonic-gate 			break;
245*7c478bd9Sstevel@tonic-gate 		case 0:
246*7c478bd9Sstevel@tonic-gate 		default:
247*7c478bd9Sstevel@tonic-gate 			errno = ENOENT;
248*7c478bd9Sstevel@tonic-gate 			break;
249*7c478bd9Sstevel@tonic-gate 		}
250*7c478bd9Sstevel@tonic-gate 		goto error1;
251*7c478bd9Sstevel@tonic-gate 	}
252*7c478bd9Sstevel@tonic-gate 
253*7c478bd9Sstevel@tonic-gate 	if (__m_doupdate_init())
254*7c478bd9Sstevel@tonic-gate 		goto error1;
255*7c478bd9Sstevel@tonic-gate 
256*7c478bd9Sstevel@tonic-gate 	if ((sp = (SCREEN *) calloc(1, sizeof *sp)) == (SCREEN *) 0)
257*7c478bd9Sstevel@tonic-gate 		goto error1;
258*7c478bd9Sstevel@tonic-gate 
259*7c478bd9Sstevel@tonic-gate 	sp->_if = in_fp;
260*7c478bd9Sstevel@tonic-gate 	sp->_of = out_fp;
261*7c478bd9Sstevel@tonic-gate 	sp->_term = cur_term;
262*7c478bd9Sstevel@tonic-gate 
263*7c478bd9Sstevel@tonic-gate 	sp->_unget._size = __m_decode_init((t_decode **) &sp->_decode);
264*7c478bd9Sstevel@tonic-gate 
265*7c478bd9Sstevel@tonic-gate 	/* Maximum length of a multbyte key sequence, including
266*7c478bd9Sstevel@tonic-gate 	 * multibyte characters and terminal function keys.
267*7c478bd9Sstevel@tonic-gate 	 */
268*7c478bd9Sstevel@tonic-gate 	if (sp->_unget._size < MB_LEN_MAX)
269*7c478bd9Sstevel@tonic-gate 		sp->_unget._size = MB_LEN_MAX;
270*7c478bd9Sstevel@tonic-gate 
271*7c478bd9Sstevel@tonic-gate 	sp->_unget._stack = calloc(
272*7c478bd9Sstevel@tonic-gate 		(size_t) sp->_unget._size,  sizeof *sp->_unget._stack
273*7c478bd9Sstevel@tonic-gate 	);
274*7c478bd9Sstevel@tonic-gate 	if (sp->_unget._stack == (void *) 0)
275*7c478bd9Sstevel@tonic-gate 		goto error2;
276*7c478bd9Sstevel@tonic-gate 
277*7c478bd9Sstevel@tonic-gate 	if ((wio = (t_wide_io *) calloc(1, sizeof *wio)) == (t_wide_io *) 0)
278*7c478bd9Sstevel@tonic-gate 		goto error2;
279*7c478bd9Sstevel@tonic-gate 
280*7c478bd9Sstevel@tonic-gate 	/* Setup wide input for XCurses. */
281*7c478bd9Sstevel@tonic-gate 	wio->get = (int (*)(void *)) wgetch;
282*7c478bd9Sstevel@tonic-gate 	wio->unget = __xc_ungetc;
283*7c478bd9Sstevel@tonic-gate 	wio->reset = __xc_clearerr;
284*7c478bd9Sstevel@tonic-gate 	wio->iserror = __xc_ferror;
285*7c478bd9Sstevel@tonic-gate 	wio->iseof = __xc_feof;
286*7c478bd9Sstevel@tonic-gate 	sp->_in = wio;
287*7c478bd9Sstevel@tonic-gate 
288*7c478bd9Sstevel@tonic-gate 	if (assume_one_line) {
289*7c478bd9Sstevel@tonic-gate 		/* Assume only one line. */
290*7c478bd9Sstevel@tonic-gate 		lines = 1;
291*7c478bd9Sstevel@tonic-gate 
292*7c478bd9Sstevel@tonic-gate 		/* Disable capabilities that assume more than one line. */
293*7c478bd9Sstevel@tonic-gate 		clear_screen =
294*7c478bd9Sstevel@tonic-gate 		clr_eos =
295*7c478bd9Sstevel@tonic-gate 		cursor_up =
296*7c478bd9Sstevel@tonic-gate 		cursor_down =
297*7c478bd9Sstevel@tonic-gate 		cursor_home =
298*7c478bd9Sstevel@tonic-gate 		cursor_to_ll =
299*7c478bd9Sstevel@tonic-gate 		cursor_address =
300*7c478bd9Sstevel@tonic-gate 		row_address =
301*7c478bd9Sstevel@tonic-gate 		parm_up_cursor =
302*7c478bd9Sstevel@tonic-gate 		parm_down_cursor = (char *) 0;
303*7c478bd9Sstevel@tonic-gate 
304*7c478bd9Sstevel@tonic-gate 		/* Re-evaluate the cursor motion costs. */
305*7c478bd9Sstevel@tonic-gate 		__m_mvcur_cost();
306*7c478bd9Sstevel@tonic-gate 
307*7c478bd9Sstevel@tonic-gate 		/* Reset flag for subsequent calls to newterm(). */
308*7c478bd9Sstevel@tonic-gate 		assume_one_line = FALSE;
309*7c478bd9Sstevel@tonic-gate 	}
310*7c478bd9Sstevel@tonic-gate 
311*7c478bd9Sstevel@tonic-gate 	if ((sp->_curscr = newwin(lines, columns, 0, 0)) == (WINDOW *) 0)
312*7c478bd9Sstevel@tonic-gate 		goto error2;
313*7c478bd9Sstevel@tonic-gate 
314*7c478bd9Sstevel@tonic-gate 	if ((sp->_newscr = newwin(lines, columns, 0, 0)) == (WINDOW *) 0)
315*7c478bd9Sstevel@tonic-gate 		goto error2;
316*7c478bd9Sstevel@tonic-gate 
317*7c478bd9Sstevel@tonic-gate 	sp->_hash = (unsigned long *) calloc(lines, sizeof *sp->_hash);
318*7c478bd9Sstevel@tonic-gate 	if (sp->_hash == (unsigned long *) 0)
319*7c478bd9Sstevel@tonic-gate 		goto error2;
320*7c478bd9Sstevel@tonic-gate 
321*7c478bd9Sstevel@tonic-gate 	if (0 <= __m_slk_format && __m_slk_init(sp, __m_slk_format) == ERR)
322*7c478bd9Sstevel@tonic-gate 		goto error2;
323*7c478bd9Sstevel@tonic-gate 
324*7c478bd9Sstevel@tonic-gate 	/* doupdate() will perform the final screen preparations like
325*7c478bd9Sstevel@tonic-gate 	 * enter_ca_mode, reset_prog_mode() (to assert the termios
326*7c478bd9Sstevel@tonic-gate 	 * changes), etc.
327*7c478bd9Sstevel@tonic-gate 	 */
328*7c478bd9Sstevel@tonic-gate 	sp->_flags |= S_ENDWIN;
329*7c478bd9Sstevel@tonic-gate 
330*7c478bd9Sstevel@tonic-gate #ifdef SIGTSTP
331*7c478bd9Sstevel@tonic-gate 	(void) signal(SIGTSTP, tstp);
332*7c478bd9Sstevel@tonic-gate #endif
333*7c478bd9Sstevel@tonic-gate 	/* Assert that __m_screen is set to the new terminal. */
334*7c478bd9Sstevel@tonic-gate 	osp = set_term(sp);
335*7c478bd9Sstevel@tonic-gate 
336*7c478bd9Sstevel@tonic-gate 	/* Disable echo in tty driver, Curses does software echo. */
337*7c478bd9Sstevel@tonic-gate 	cur_term->_prog.c_lflag &= ~ECHO;
338*7c478bd9Sstevel@tonic-gate 
339*7c478bd9Sstevel@tonic-gate 	/* Enable mappnig of cr -> nl on input and nl -> crlf on output. */
340*7c478bd9Sstevel@tonic-gate         cur_term->_prog.c_iflag |= ICRNL;
341*7c478bd9Sstevel@tonic-gate         cur_term->_prog.c_oflag |= OPOST;
342*7c478bd9Sstevel@tonic-gate #ifdef ONLCR
343*7c478bd9Sstevel@tonic-gate         cur_term->_prog.c_oflag |= ONLCR;
344*7c478bd9Sstevel@tonic-gate #endif
345*7c478bd9Sstevel@tonic-gate 	cur_term->_flags |= __TERM_NL_IS_CRLF;
346*7c478bd9Sstevel@tonic-gate 
347*7c478bd9Sstevel@tonic-gate #ifdef TAB0
348*7c478bd9Sstevel@tonic-gate 	/* Use real tabs. */
349*7c478bd9Sstevel@tonic-gate 	cur_term->_prog.c_oflag &= ~(TAB1|TAB2|TAB3);
350*7c478bd9Sstevel@tonic-gate #endif
351*7c478bd9Sstevel@tonic-gate 
352*7c478bd9Sstevel@tonic-gate 	(void) __m_tty_set(&cur_term->_prog);
353*7c478bd9Sstevel@tonic-gate 	(void) __m_set_echo(1);
354*7c478bd9Sstevel@tonic-gate 	(void) typeahead(fileno(in_fp));
355*7c478bd9Sstevel@tonic-gate 
356*7c478bd9Sstevel@tonic-gate 	if (stdscr == (WINDOW *) 0) {
357*7c478bd9Sstevel@tonic-gate 		n = rip.top - rip.bottom;
358*7c478bd9Sstevel@tonic-gate 		stdscr = newwin(lines - n, 0, rip.top, 0);
359*7c478bd9Sstevel@tonic-gate 		if (stdscr == (WINDOW *) 0)
360*7c478bd9Sstevel@tonic-gate 			goto error3;
361*7c478bd9Sstevel@tonic-gate 
362*7c478bd9Sstevel@tonic-gate 		/* Create and initialise ripped off line windows.
363*7c478bd9Sstevel@tonic-gate 		 * It is the application's responsiblity to free the
364*7c478bd9Sstevel@tonic-gate 		 * windows when the application terminates.
365*7c478bd9Sstevel@tonic-gate 		 */
366*7c478bd9Sstevel@tonic-gate 		for (i = 0; i < n; ++i) {
367*7c478bd9Sstevel@tonic-gate 			y = rip.line[i].dy;
368*7c478bd9Sstevel@tonic-gate 			if (y < 0)
369*7c478bd9Sstevel@tonic-gate 				y += lines;
370*7c478bd9Sstevel@tonic-gate 
371*7c478bd9Sstevel@tonic-gate 			w = newwin(1, 0, y, 0);
372*7c478bd9Sstevel@tonic-gate 			if (rip.line[i].init != (int (*)(WINDOW *, int)) 0)
373*7c478bd9Sstevel@tonic-gate 				(void) (*rip.line[i].init)(w, columns);
374*7c478bd9Sstevel@tonic-gate 		}
375*7c478bd9Sstevel@tonic-gate 	}
376*7c478bd9Sstevel@tonic-gate 
377*7c478bd9Sstevel@tonic-gate 	return __m_return_pointer("newterm", sp);
378*7c478bd9Sstevel@tonic-gate error3:
379*7c478bd9Sstevel@tonic-gate 	(void) set_term(osp);
380*7c478bd9Sstevel@tonic-gate error2:
381*7c478bd9Sstevel@tonic-gate 	delscreen(sp);
382*7c478bd9Sstevel@tonic-gate error1:
383*7c478bd9Sstevel@tonic-gate 	return __m_return_pointer("newterm", (SCREEN *) 0);
384*7c478bd9Sstevel@tonic-gate }
385*7c478bd9Sstevel@tonic-gate 
386*7c478bd9Sstevel@tonic-gate /*f
387*7c478bd9Sstevel@tonic-gate  * Free storage associated with a screen structure.
388*7c478bd9Sstevel@tonic-gate  * NOTE endwin() does not do this.
389*7c478bd9Sstevel@tonic-gate  */
390*7c478bd9Sstevel@tonic-gate void
delscreen(sp)391*7c478bd9Sstevel@tonic-gate delscreen(sp)
392*7c478bd9Sstevel@tonic-gate SCREEN *sp;
393*7c478bd9Sstevel@tonic-gate {
394*7c478bd9Sstevel@tonic-gate #ifdef M_CURSES_TRACE
395*7c478bd9Sstevel@tonic-gate 	__m_trace("delscreen(%p)", sp);
396*7c478bd9Sstevel@tonic-gate #endif
397*7c478bd9Sstevel@tonic-gate 
398*7c478bd9Sstevel@tonic-gate 	if (sp != (SCREEN *) 0) {
399*7c478bd9Sstevel@tonic-gate 		if (sp->_slk._w != (WINDOW *) 0)
400*7c478bd9Sstevel@tonic-gate 			(void) delwin(sp->_slk._w);
401*7c478bd9Sstevel@tonic-gate 
402*7c478bd9Sstevel@tonic-gate 		(void) delwin(sp->_newscr);
403*7c478bd9Sstevel@tonic-gate 		(void) delwin(sp->_curscr);
404*7c478bd9Sstevel@tonic-gate 		(void) del_curterm(sp->_term);
405*7c478bd9Sstevel@tonic-gate 
406*7c478bd9Sstevel@tonic-gate 		__m_decode_free((t_decode **) &sp->_decode);
407*7c478bd9Sstevel@tonic-gate 
408*7c478bd9Sstevel@tonic-gate 		if (sp->_hash != (unsigned long *) 0)
409*7c478bd9Sstevel@tonic-gate 			free(sp->_hash);
410*7c478bd9Sstevel@tonic-gate 
411*7c478bd9Sstevel@tonic-gate 		if (sp->_unget._stack != (int *) 0)
412*7c478bd9Sstevel@tonic-gate 			free(sp->_unget._stack);
413*7c478bd9Sstevel@tonic-gate 
414*7c478bd9Sstevel@tonic-gate 		if (sp->_in != (void *) 0)
415*7c478bd9Sstevel@tonic-gate 			free(sp->_in);
416*7c478bd9Sstevel@tonic-gate 
417*7c478bd9Sstevel@tonic-gate 		free(sp);
418*7c478bd9Sstevel@tonic-gate 	}
419*7c478bd9Sstevel@tonic-gate 
420*7c478bd9Sstevel@tonic-gate 	__m_return_void("delscreen");
421*7c478bd9Sstevel@tonic-gate }
422*7c478bd9Sstevel@tonic-gate 
423*7c478bd9Sstevel@tonic-gate /*f
424*7c478bd9Sstevel@tonic-gate  * Switch current terminal for Curses layer.
425*7c478bd9Sstevel@tonic-gate  */
426*7c478bd9Sstevel@tonic-gate SCREEN *
set_term(screen)427*7c478bd9Sstevel@tonic-gate set_term(screen)
428*7c478bd9Sstevel@tonic-gate SCREEN *screen;
429*7c478bd9Sstevel@tonic-gate {
430*7c478bd9Sstevel@tonic-gate     	SCREEN *osp = __m_screen;
431*7c478bd9Sstevel@tonic-gate 
432*7c478bd9Sstevel@tonic-gate #ifdef M_CURSES_TRACE
433*7c478bd9Sstevel@tonic-gate 	__m_trace("set_term(%p)", screen);
434*7c478bd9Sstevel@tonic-gate #endif
435*7c478bd9Sstevel@tonic-gate 	if (screen != (SCREEN *) 0) {
436*7c478bd9Sstevel@tonic-gate 		(void) set_curterm(screen->_term);
437*7c478bd9Sstevel@tonic-gate 		curscr = screen->_curscr;
438*7c478bd9Sstevel@tonic-gate 		__m_screen = screen;
439*7c478bd9Sstevel@tonic-gate 
440*7c478bd9Sstevel@tonic-gate 		LINES = lines;
441*7c478bd9Sstevel@tonic-gate 		COLS = columns;
442*7c478bd9Sstevel@tonic-gate 		COLORS = max_colors;
443*7c478bd9Sstevel@tonic-gate 		COLOR_PAIRS = max_pairs;
444*7c478bd9Sstevel@tonic-gate 	}
445*7c478bd9Sstevel@tonic-gate 
446*7c478bd9Sstevel@tonic-gate 	return __m_return_pointer("set_term", osp);
447*7c478bd9Sstevel@tonic-gate }
448*7c478bd9Sstevel@tonic-gate 
449*7c478bd9Sstevel@tonic-gate int
typeahead(fd)450*7c478bd9Sstevel@tonic-gate typeahead(fd)
451*7c478bd9Sstevel@tonic-gate int fd;
452*7c478bd9Sstevel@tonic-gate {
453*7c478bd9Sstevel@tonic-gate #ifdef M_CURSES_TRACE
454*7c478bd9Sstevel@tonic-gate 	__m_trace("typeahead(%d)", fd);
455*7c478bd9Sstevel@tonic-gate #endif
456*7c478bd9Sstevel@tonic-gate 
457*7c478bd9Sstevel@tonic-gate 	__m_screen->_kfd = fd;
458*7c478bd9Sstevel@tonic-gate 	__m_screen->_flags &= ~S_ISATTY;
459*7c478bd9Sstevel@tonic-gate 
460*7c478bd9Sstevel@tonic-gate 	if (fd != -1 && isatty(fd))
461*7c478bd9Sstevel@tonic-gate 		__m_screen->_flags |= S_ISATTY;
462*7c478bd9Sstevel@tonic-gate 
463*7c478bd9Sstevel@tonic-gate 	return __m_return_code("typeahead", OK);
464*7c478bd9Sstevel@tonic-gate }
465*7c478bd9Sstevel@tonic-gate 
466*7c478bd9Sstevel@tonic-gate int
__m_set_echo(bf)467*7c478bd9Sstevel@tonic-gate __m_set_echo(bf)
468*7c478bd9Sstevel@tonic-gate int bf;
469*7c478bd9Sstevel@tonic-gate {
470*7c478bd9Sstevel@tonic-gate 	int old;
471*7c478bd9Sstevel@tonic-gate 
472*7c478bd9Sstevel@tonic-gate 	old = (__m_screen->_flags & S_ECHO) == S_ECHO;
473*7c478bd9Sstevel@tonic-gate 
474*7c478bd9Sstevel@tonic-gate 	__m_screen->_flags &= ~S_ECHO;
475*7c478bd9Sstevel@tonic-gate 	if (bf)
476*7c478bd9Sstevel@tonic-gate 		__m_screen->_flags |= S_ECHO;
477*7c478bd9Sstevel@tonic-gate 
478*7c478bd9Sstevel@tonic-gate 	return old;
479*7c478bd9Sstevel@tonic-gate }
480*7c478bd9Sstevel@tonic-gate 
481