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
46 MODULE_ID("$Id: lib_clreol.c,v 1.5 2023/10/17 09:52:08 nicm Exp $")
47
NCURSES_EXPORT(int)48 NCURSES_EXPORT(int)
49 wclrtoeol(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