1/* $OpenBSD: lib_clreol.c,v 1.5 2023/10/17 09:52:08 nicm Exp $ */
2
3/****************************************************************************
4 * Copyright 2020,2021 Thomas E. Dickey                                     *
5 * Copyright 1998-2001,2009 Free Software Foundation, Inc.                  *
6 *                                                                          *
7 * Permission is hereby granted, free of charge, to any person obtaining a  *
8 * copy of this software and associated documentation files (the            *
9 * "Software"), to deal in the Software without restriction, including      *
10 * without limitation the rights to use, copy, modify, merge, publish,      *
11 * distribute, distribute with modifications, sublicense, and/or sell       *
12 * copies of the Software, and to permit persons to whom the Software is    *
13 * furnished to do so, subject to the following conditions:                 *
14 *                                                                          *
15 * The above copyright notice and this permission notice shall be included  *
16 * in all copies or substantial portions of the Software.                   *
17 *                                                                          *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
21 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
22 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
23 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *
24 * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
25 *                                                                          *
26 * Except as contained in this notice, the name(s) of the above copyright   *
27 * holders shall not be used in advertising or otherwise to promote the     *
28 * sale, use or other dealings in this Software without prior written       *
29 * authorization.                                                           *
30 ****************************************************************************/
31
32/****************************************************************************
33 *  Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995               *
34 *     and: Eric S. Raymond <esr@snark.thyrsus.com>                         *
35 ****************************************************************************/
36
37/*
38**	lib_clreol.c
39**
40**	The routine wclrtoeol().
41**
42*/
43
44#include <curses.priv.h>
45
46MODULE_ID("$Id: lib_clreol.c,v 1.5 2023/10/17 09:52:08 nicm Exp $")
47
48NCURSES_EXPORT(int)
49wclrtoeol(WINDOW *win)
50{
51    int code = ERR;
52
53    T((T_CALLED("wclrtoeol(%p)"), (void *) win));
54
55    if (win) {
56	NCURSES_CH_T blank;
57	NCURSES_CH_T *ptr, *end;
58	struct ldat *line;
59	NCURSES_SIZE_T y = win->_cury;
60	NCURSES_SIZE_T x = win->_curx;
61
62	/*
63	 * If we have just wrapped the cursor, the clear applies to the
64	 * new line, unless we are at the lower right corner.
65	 */
66	if (IS_WRAPPED(win) != 0
67	    && y < win->_maxy) {
68	    win->_flags &= ~_WRAPPED;
69	}
70
71	/*
72	 * There's no point in clearing if we're not on a legal
73	 * position, either.
74	 */
75	if (IS_WRAPPED(win)
76	    || y > win->_maxy
77	    || x > win->_maxx)
78	    returnCode(ERR);
79
80	blank = win->_nc_bkgd;
81	line = &win->_line[y];
82	CHANGED_TO_EOL(line, x, win->_maxx);
83
84	ptr = &(line->text[x]);
85	end = &(line->text[win->_maxx]);
86
87	while (ptr <= end)
88	    *ptr++ = blank;
89
90	_nc_synchook(win);
91	code = OK;
92    }
93    returnCode(code);
94}
95