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) 1995-1998 by Sun Microsystems, Inc.
24*7c478bd9Sstevel@tonic-gate * All rights reserved.
25*7c478bd9Sstevel@tonic-gate */
26*7c478bd9Sstevel@tonic-gate
27*7c478bd9Sstevel@tonic-gate /* LINTLIBRARY */
28*7c478bd9Sstevel@tonic-gate
29*7c478bd9Sstevel@tonic-gate /*
30*7c478bd9Sstevel@tonic-gate * initscr.c
31*7c478bd9Sstevel@tonic-gate *
32*7c478bd9Sstevel@tonic-gate * XCurses Library
33*7c478bd9Sstevel@tonic-gate *
34*7c478bd9Sstevel@tonic-gate * Copyright 1986, 1994 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 rcsID[] =
41*7c478bd9Sstevel@tonic-gate "$Header: /team/ps/sun_xcurses/archive/local_changes/xcurses/src/lib/"
42*7c478bd9Sstevel@tonic-gate "libxcurses/src/libc/xcurses/rcs/initscr.c 1.4 1998/04/30 20:30:21 "
43*7c478bd9Sstevel@tonic-gate "cbates Exp $";
44*7c478bd9Sstevel@tonic-gate #endif
45*7c478bd9Sstevel@tonic-gate #endif
46*7c478bd9Sstevel@tonic-gate
47*7c478bd9Sstevel@tonic-gate #include <private.h>
48*7c478bd9Sstevel@tonic-gate #include <errno.h>
49*7c478bd9Sstevel@tonic-gate #include <stdlib.h>
50*7c478bd9Sstevel@tonic-gate
51*7c478bd9Sstevel@tonic-gate static const char nomem_msg[] = "Failed to allocate required memory.\n";
52*7c478bd9Sstevel@tonic-gate static const char noterm_msg[] = "Unknown terminal \"%s\".\n";
53*7c478bd9Sstevel@tonic-gate static const char dumb_msg[] =
54*7c478bd9Sstevel@tonic-gate "Terminal \"%s\" has insufficent capabilities for Curses.\n";
55*7c478bd9Sstevel@tonic-gate
56*7c478bd9Sstevel@tonic-gate /*
57*7c478bd9Sstevel@tonic-gate * Initialize XCurses for use with a single terminal. stdin and stdout
58*7c478bd9Sstevel@tonic-gate * are used. If a program needs an indication of error conditions,
59*7c478bd9Sstevel@tonic-gate * so that it can continue to run in a line-oriented mode, use newterm()
60*7c478bd9Sstevel@tonic-gate * instead.
61*7c478bd9Sstevel@tonic-gate */
62*7c478bd9Sstevel@tonic-gate WINDOW *
initscr(void)63*7c478bd9Sstevel@tonic-gate initscr(void)
64*7c478bd9Sstevel@tonic-gate {
65*7c478bd9Sstevel@tonic-gate SCREEN *sp;
66*7c478bd9Sstevel@tonic-gate char *term, *err;
67*7c478bd9Sstevel@tonic-gate
68*7c478bd9Sstevel@tonic-gate errno = 0;
69*7c478bd9Sstevel@tonic-gate sp = newterm(NULL, stdout, stdin);
70*7c478bd9Sstevel@tonic-gate
71*7c478bd9Sstevel@tonic-gate if (sp == NULL) {
72*7c478bd9Sstevel@tonic-gate err = (errno == ENOMEM) ? (char *)nomem_msg :
73*7c478bd9Sstevel@tonic-gate (char *)noterm_msg;
74*7c478bd9Sstevel@tonic-gate goto error_1;
75*7c478bd9Sstevel@tonic-gate }
76*7c478bd9Sstevel@tonic-gate
77*7c478bd9Sstevel@tonic-gate (void) set_term(sp);
78*7c478bd9Sstevel@tonic-gate
79*7c478bd9Sstevel@tonic-gate /*
80*7c478bd9Sstevel@tonic-gate * We require some form of cursor positioning and the ability to
81*7c478bd9Sstevel@tonic-gate * clear the end of a line. These abilities should be sufficient
82*7c478bd9Sstevel@tonic-gate * to provide minimum full screen support.
83*7c478bd9Sstevel@tonic-gate */
84*7c478bd9Sstevel@tonic-gate if ((1 < lines) && (cursor_address == NULL) &&
85*7c478bd9Sstevel@tonic-gate (row_address == NULL) &&
86*7c478bd9Sstevel@tonic-gate ((cursor_up == NULL) || (cursor_down == NULL)) &&
87*7c478bd9Sstevel@tonic-gate ((parm_up_cursor == NULL) || (parm_down_cursor == NULL))) {
88*7c478bd9Sstevel@tonic-gate err = (char *)dumb_msg;
89*7c478bd9Sstevel@tonic-gate goto error_3;
90*7c478bd9Sstevel@tonic-gate }
91*7c478bd9Sstevel@tonic-gate
92*7c478bd9Sstevel@tonic-gate if (((1 < lines) && (cursor_address == NULL)) &&
93*7c478bd9Sstevel@tonic-gate (column_address == NULL) &&
94*7c478bd9Sstevel@tonic-gate ((cursor_left == NULL) || (cursor_right == NULL)) &&
95*7c478bd9Sstevel@tonic-gate ((parm_left_cursor == NULL) ||
96*7c478bd9Sstevel@tonic-gate (parm_right_cursor == NULL))) {
97*7c478bd9Sstevel@tonic-gate err = (char *)dumb_msg;
98*7c478bd9Sstevel@tonic-gate goto error_3;
99*7c478bd9Sstevel@tonic-gate }
100*7c478bd9Sstevel@tonic-gate
101*7c478bd9Sstevel@tonic-gate if (clr_eol == NULL) {
102*7c478bd9Sstevel@tonic-gate err = (char *)dumb_msg;
103*7c478bd9Sstevel@tonic-gate goto error_3;
104*7c478bd9Sstevel@tonic-gate }
105*7c478bd9Sstevel@tonic-gate
106*7c478bd9Sstevel@tonic-gate return (stdscr);
107*7c478bd9Sstevel@tonic-gate
108*7c478bd9Sstevel@tonic-gate error_3:
109*7c478bd9Sstevel@tonic-gate (void) delwin(stdscr);
110*7c478bd9Sstevel@tonic-gate (void) endwin();
111*7c478bd9Sstevel@tonic-gate (void) delscreen(sp);
112*7c478bd9Sstevel@tonic-gate
113*7c478bd9Sstevel@tonic-gate error_1:
114*7c478bd9Sstevel@tonic-gate /*
115*7c478bd9Sstevel@tonic-gate * newterm()/setupterm() attempts to load $TERM, else if
116*7c478bd9Sstevel@tonic-gate * $TERM is not defined, the vendor's default terminal type.
117*7c478bd9Sstevel@tonic-gate */
118*7c478bd9Sstevel@tonic-gate if ((term = getenv("TERM")) == NULL) {
119*7c478bd9Sstevel@tonic-gate term = M_TERM_NAME;
120*7c478bd9Sstevel@tonic-gate }
121*7c478bd9Sstevel@tonic-gate
122*7c478bd9Sstevel@tonic-gate (void) fprintf(stderr, err, term);
123*7c478bd9Sstevel@tonic-gate exit(1);
124*7c478bd9Sstevel@tonic-gate return (NULL);
125*7c478bd9Sstevel@tonic-gate }
126