1/****************************************************************************
2 * Copyright 2020 Thomas E. Dickey                                          *
3 * Copyright 1998-2001,2009 Free Software Foundation, Inc.                  *
4 *                                                                          *
5 * Permission is hereby granted, free of charge, to any person obtaining a  *
6 * copy of this software and associated documentation files (the            *
7 * "Software"), to deal in the Software without restriction, including      *
8 * without limitation the rights to use, copy, modify, merge, publish,      *
9 * distribute, distribute with modifications, sublicense, and/or sell       *
10 * copies of the Software, and to permit persons to whom the Software is    *
11 * furnished to do so, subject to the following conditions:                 *
12 *                                                                          *
13 * The above copyright notice and this permission notice shall be included  *
14 * in all copies or substantial portions of the Software.                   *
15 *                                                                          *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
17 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
18 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
19 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
20 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
21 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *
22 * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
23 *                                                                          *
24 * Except as contained in this notice, the name(s) of the above copyright   *
25 * holders shall not be used in advertising or otherwise to promote the     *
26 * sale, use or other dealings in this Software without prior written       *
27 * authorization.                                                           *
28 ****************************************************************************/
29
30/****************************************************************************
31 *  Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995               *
32 *     and: Eric S. Raymond <esr@snark.thyrsus.com>                         *
33 ****************************************************************************/
34
35/*
36**	lib_clreol.c
37**
38**	The routine wclrtoeol().
39**
40*/
41
42#include <curses.priv.h>
43
44MODULE_ID("$Id: lib_clreol.c,v 1.23 2020/02/02 23:34:34 tom Exp $")
45
46NCURSES_EXPORT(int)
47wclrtoeol(WINDOW *win)
48{
49    int code = ERR;
50
51    T((T_CALLED("wclrtoeol(%p)"), (void *) win));
52
53    if (win) {
54	NCURSES_CH_T blank;
55	NCURSES_CH_T *ptr, *end;
56	struct ldat *line;
57	NCURSES_SIZE_T y = win->_cury;
58	NCURSES_SIZE_T x = win->_curx;
59
60	/*
61	 * If we have just wrapped the cursor, the clear applies to the
62	 * new line, unless we are at the lower right corner.
63	 */
64	if ((win->_flags & _WRAPPED) != 0
65	    && y < win->_maxy) {
66	    win->_flags &= ~_WRAPPED;
67	}
68
69	/*
70	 * There's no point in clearing if we're not on a legal
71	 * position, either.
72	 */
73	if ((win->_flags & _WRAPPED) != 0
74	    || y > win->_maxy
75	    || x > win->_maxx)
76	    returnCode(ERR);
77
78	blank = win->_nc_bkgd;
79	line = &win->_line[y];
80	CHANGED_TO_EOL(line, x, win->_maxx);
81
82	ptr = &(line->text[x]);
83	end = &(line->text[win->_maxx]);
84
85	while (ptr <= end)
86	    *ptr++ = blank;
87
88	_nc_synchook(win);
89	code = OK;
90    }
91    returnCode(code);
92}
93