1*7c478bd9Sstevel@tonic-gate /*
2*7c478bd9Sstevel@tonic-gate * Copyright 2004 Sun Microsystems, Inc. All rights reserved.
3*7c478bd9Sstevel@tonic-gate * Use is subject to license terms.
4*7c478bd9Sstevel@tonic-gate */
5*7c478bd9Sstevel@tonic-gate
6*7c478bd9Sstevel@tonic-gate /* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */
7*7c478bd9Sstevel@tonic-gate /* All Rights Reserved */
8*7c478bd9Sstevel@tonic-gate
9*7c478bd9Sstevel@tonic-gate /*
10*7c478bd9Sstevel@tonic-gate * Copyright (c) 1980 Regents of the University of California.
11*7c478bd9Sstevel@tonic-gate * All rights reserved. The Berkeley software License Agreement
12*7c478bd9Sstevel@tonic-gate * specifies the terms and conditions for redistribution.
13*7c478bd9Sstevel@tonic-gate */
14*7c478bd9Sstevel@tonic-gate
15*7c478bd9Sstevel@tonic-gate /*LINTLIBRARY*/
16*7c478bd9Sstevel@tonic-gate
17*7c478bd9Sstevel@tonic-gate #ifndef lint
18*7c478bd9Sstevel@tonic-gate static char
19*7c478bd9Sstevel@tonic-gate sccsid[] = "@(#)erase.c 1.6 88/02/08 SMI"; /* from UCB 5.1 85/06/07 */
20*7c478bd9Sstevel@tonic-gate #endif /* not lint */
21*7c478bd9Sstevel@tonic-gate
22*7c478bd9Sstevel@tonic-gate #include <stddef.h>
23*7c478bd9Sstevel@tonic-gate #include "curses.ext"
24*7c478bd9Sstevel@tonic-gate
25*7c478bd9Sstevel@tonic-gate /*
26*7c478bd9Sstevel@tonic-gate * This routine erases everything on the window.
27*7c478bd9Sstevel@tonic-gate */
28*7c478bd9Sstevel@tonic-gate
29*7c478bd9Sstevel@tonic-gate int
werase(WINDOW * win)30*7c478bd9Sstevel@tonic-gate werase(WINDOW *win)
31*7c478bd9Sstevel@tonic-gate {
32*7c478bd9Sstevel@tonic-gate int y;
33*7c478bd9Sstevel@tonic-gate char *sp, *end, *start, *maxx;
34*7c478bd9Sstevel@tonic-gate ptrdiff_t minx;
35*7c478bd9Sstevel@tonic-gate
36*7c478bd9Sstevel@tonic-gate #ifdef DEBUG
37*7c478bd9Sstevel@tonic-gate fprintf(outf, "WERASE(%0.2o)\n", win);
38*7c478bd9Sstevel@tonic-gate #endif
39*7c478bd9Sstevel@tonic-gate for (y = 0; y < win->_maxy; y++) {
40*7c478bd9Sstevel@tonic-gate minx = _NOCHANGE;
41*7c478bd9Sstevel@tonic-gate start = win->_y[y];
42*7c478bd9Sstevel@tonic-gate end = &start[win->_maxx];
43*7c478bd9Sstevel@tonic-gate for (sp = start; sp < end; sp++)
44*7c478bd9Sstevel@tonic-gate if (*sp != ' ') {
45*7c478bd9Sstevel@tonic-gate maxx = sp;
46*7c478bd9Sstevel@tonic-gate if (minx == _NOCHANGE)
47*7c478bd9Sstevel@tonic-gate minx = sp - start;
48*7c478bd9Sstevel@tonic-gate *sp = ' ';
49*7c478bd9Sstevel@tonic-gate }
50*7c478bd9Sstevel@tonic-gate if (minx != _NOCHANGE)
51*7c478bd9Sstevel@tonic-gate (void) touchline(win, y, (int)minx,
52*7c478bd9Sstevel@tonic-gate (int)(maxx - win->_y[y]));
53*7c478bd9Sstevel@tonic-gate }
54*7c478bd9Sstevel@tonic-gate win->_curx = win->_cury = 0;
55*7c478bd9Sstevel@tonic-gate return (OK);
56*7c478bd9Sstevel@tonic-gate }
57