1/****************************************************************************
2 * Copyright (c) 1998,1999,2000,2001 Free Software Foundation, Inc.         *
3 *                                                                          *
4 * Permission is hereby granted, free of charge, to any person obtaining a  *
5 * copy of this software and associated documentation files (the            *
6 * "Software"), to deal in the Software without restriction, including      *
7 * without limitation the rights to use, copy, modify, merge, publish,      *
8 * distribute, distribute with modifications, sublicense, and/or sell       *
9 * copies of the Software, and to permit persons to whom the Software is    *
10 * furnished to do so, subject to the following conditions:                 *
11 *                                                                          *
12 * The above copyright notice and this permission notice shall be included  *
13 * in all copies or substantial portions of the Software.                   *
14 *                                                                          *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
16 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
18 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
19 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
20 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *
21 * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
22 *                                                                          *
23 * Except as contained in this notice, the name(s) of the above copyright   *
24 * holders shall not be used in advertising or otherwise to promote the     *
25 * sale, use or other dealings in this Software without prior written       *
26 * authorization.                                                           *
27 ****************************************************************************/
28
29/****************************************************************************
30 *  Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995               *
31 *     and: Eric S. Raymond <esr@snark.thyrsus.com>                         *
32 ****************************************************************************/
33
34/*
35**	lib_clreol.c
36**
37**	The routine wclrtoeol().
38**
39*/
40
41#include <curses.priv.h>
42
43MODULE_ID("$Id: lib_clreol.c,v 1.21 2001/12/19 01:06:04 tom Exp $")
44
45NCURSES_EXPORT(int)
46wclrtoeol(WINDOW *win)
47{
48    int code = ERR;
49
50    T((T_CALLED("wclrtoeol(%p)"), win));
51
52    if (win) {
53	NCURSES_CH_T blank;
54	NCURSES_CH_T *ptr, *end;
55	struct ldat *line;
56	NCURSES_SIZE_T y = win->_cury;
57	NCURSES_SIZE_T x = win->_curx;
58
59	/*
60	 * If we have just wrapped the cursor, the clear applies to the
61	 * new line, unless we are at the lower right corner.
62	 */
63	if ((win->_flags & _WRAPPED) != 0
64	    && y < win->_maxy) {
65	    win->_flags &= ~_WRAPPED;
66	}
67
68	/*
69	 * There's no point in clearing if we're not on a legal
70	 * position, either.
71	 */
72	if ((win->_flags & _WRAPPED) != 0
73	    || y > win->_maxy
74	    || x > win->_maxx)
75	    returnCode(ERR);
76
77	blank = win->_nc_bkgd;
78	line = &win->_line[y];
79	CHANGED_TO_EOL(line, x, win->_maxx);
80
81	ptr = &(line->text[x]);
82	end = &(line->text[win->_maxx]);
83
84	while (ptr <= end)
85	    *ptr++ = blank;
86
87	_nc_synchook(win);
88	code = OK;
89    }
90    returnCode(code);
91}
92