1/* $NetBSD: underscore.c,v 1.13 2021/09/06 07:03:50 rin 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 1.13 2021/09/06 07:03:50 rin 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 */ 46int 47underscore(void) 48{ 49 50 return wunderscore(stdscr); 51} 52 53 54/* 55 * underend -- 56 * Exit underscore mode on stdscr. 57 */ 58int 59underend(void) 60{ 61 62 return wunderend(stdscr); 63} 64 65#endif 66 67/* 68 * wunderscore -- 69 * Enter underscore mode. 70 */ 71int 72wunderscore(WINDOW *win) 73{ 74 75 /* If can underscore, set the screen underscore bit. */ 76 if ((enter_underline_mode != NULL && exit_underline_mode != NULL) || 77 underline_char != NULL) 78 { 79 __CTRACE(__CTRACE_ATTR, "wunderscore\n"); 80 win->wattr |= __UNDERSCORE; 81 } 82 return 1; 83} 84 85/* 86 * wunderend -- 87 * Exit underscore mode. 88 */ 89int 90wunderend(WINDOW *win) 91{ 92 93 if (exit_underline_mode != NULL) { 94 __CTRACE(__CTRACE_ATTR, "wunderend\n"); 95 win->wattr &= ~__UNDERSCORE; 96 } 97 return 1; 98} 99