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 *
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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
44 MODULE_ID("$Id: lib_clreol.c,v 1.23 2020/02/02 23:34:34 tom Exp $")
45
NCURSES_EXPORT(int)46 NCURSES_EXPORT(int)
47 wclrtoeol(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