1 /* $NetBSD: underscore.c,v 1.11 2010/02/03 15:34:40 roy Exp $ */
2
3 /*-
4 * Copyright (c) 1999 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Julian Coleman.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 #include <sys/cdefs.h>
33 #ifndef lint
34 __RCSID("$NetBSD: underscore.c,v 1.11 2010/02/03 15:34:40 roy Exp $");
35 #endif /* not lint */
36
37 #include "curses.h"
38 #include "curses_private.h"
39
40 #ifndef _CURSES_USE_MACROS
41
42 /*
43 * underscore --
44 * Enter underscore mode on stdscr.
45 */
46 int
underscore(void)47 underscore(void)
48 {
49 return wunderscore(stdscr);
50 }
51
52
53 /*
54 * underend --
55 * Exit underscore mode on stdscr.
56 */
57 int
underend(void)58 underend(void)
59 {
60 return wunderend(stdscr);
61 }
62
63 #endif
64
65 /*
66 * wunderscore --
67 * Enter underscore mode.
68 */
69 int
wunderscore(WINDOW * win)70 wunderscore(WINDOW *win)
71 {
72 /* If can underscore, set the screen underscore bit. */
73 if ((enter_underline_mode != NULL && exit_underline_mode != NULL) ||
74 underline_char != NULL)
75 {
76 #ifdef DEBUG
77 __CTRACE(__CTRACE_ATTR, "wunderscore\n");
78 #endif
79 win->wattr |= __UNDERSCORE;
80 }
81 return (1);
82 }
83
84 /*
85 * wunderend --
86 * Exit underscore mode.
87 */
88 int
wunderend(WINDOW * win)89 wunderend(WINDOW *win)
90 {
91 if (exit_underline_mode != NULL) {
92 #ifdef DEBUG
93 __CTRACE(__CTRACE_ATTR, "wunderend\n");
94 #endif
95 win->wattr &= ~__UNDERSCORE;
96 }
97 return 1;
98 }
99