xref: /illumos-gate/usr/src/ucblib/libcurses/clrtoeol.c (revision 0fb96ba1f1ce26ff8b286f8f928769a6afcb00a6)
1 /*
2  * Copyright 2001 Sun Microsystems, Inc.  All rights reserved.
3  * Use is subject to license terms.
4  */
5 
6 /*	Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T	*/
7 /*	  All Rights Reserved  	*/
8 
9 /*
10  * Copyright (c) 1980 Regents of the University of California.
11  * All rights reserved.  The Berkeley software License Agreement
12  * specifies the terms and conditions for redistribution.
13  */
14 
15 /*LINTLIBRARY*/
16 
17 #ifndef lint
18 static char
19 sccsid[] = "@(#)clrtoeol.c 1.6 88/02/08 SMI"; /* from UCB 5.1 85/06/07 */
20 #endif /* not lint */
21 
22 #include	<stddef.h>
23 #include	"curses.ext"
24 
25 /*
26  *	This routine clears up to the end of line
27  */
28 
29 int
30 wclrtoeol(WINDOW *win)
31 {
32 	char	*sp, *end;
33 	int	y, x;
34 	char	*maxx;
35 	ptrdiff_t	minx;
36 
37 	y = win->_cury;
38 	x = win->_curx;
39 	end = &win->_y[y][win->_maxx];
40 	minx = _NOCHANGE;
41 	maxx = &win->_y[y][x];
42 	for (sp = maxx; sp < end; sp++)
43 		if (*sp != ' ') {
44 			maxx = sp;
45 			if (minx == _NOCHANGE)
46 				minx = sp - win->_y[y];
47 			*sp = ' ';
48 		}
49 	/*
50 	 * update firstch and lastch for the line
51 	 */
52 	(void) touchline(win, y, win->_curx, win->_maxx - 1);
53 
54 #ifdef DEBUG
55 	fprintf(outf, "CLRTOEOL: minx = %d, maxx = %d, firstch = %d,"
56 	    " lastch = %d\n", minx, maxx - win->_y[y], win->_firstch[y],
57 	    win->_lastch[y]);
58 #endif
59 	return (OK);
60 }
61