1*0Sstevel@tonic-gate /*
2*0Sstevel@tonic-gate * Copyright 2004 Sun Microsystems, Inc. All rights reserved.
3*0Sstevel@tonic-gate * Use is subject to license terms.
4*0Sstevel@tonic-gate */
5*0Sstevel@tonic-gate
6*0Sstevel@tonic-gate /* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */
7*0Sstevel@tonic-gate /* All Rights Reserved */
8*0Sstevel@tonic-gate
9*0Sstevel@tonic-gate /*
10*0Sstevel@tonic-gate * Copyright (c) 1980 Regents of the University of California.
11*0Sstevel@tonic-gate * All rights reserved. The Berkeley software License Agreement
12*0Sstevel@tonic-gate * specifies the terms and conditions for redistribution.
13*0Sstevel@tonic-gate */
14*0Sstevel@tonic-gate
15*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI"
16*0Sstevel@tonic-gate
17*0Sstevel@tonic-gate /*LINTLIBRARY*/
18*0Sstevel@tonic-gate
19*0Sstevel@tonic-gate #ifndef lint
20*0Sstevel@tonic-gate static char
21*0Sstevel@tonic-gate sccsid[] = "@(#)erase.c 1.6 88/02/08 SMI"; /* from UCB 5.1 85/06/07 */
22*0Sstevel@tonic-gate #endif /* not lint */
23*0Sstevel@tonic-gate
24*0Sstevel@tonic-gate #include <stddef.h>
25*0Sstevel@tonic-gate #include "curses.ext"
26*0Sstevel@tonic-gate
27*0Sstevel@tonic-gate /*
28*0Sstevel@tonic-gate * This routine erases everything on the window.
29*0Sstevel@tonic-gate */
30*0Sstevel@tonic-gate
31*0Sstevel@tonic-gate int
werase(WINDOW * win)32*0Sstevel@tonic-gate werase(WINDOW *win)
33*0Sstevel@tonic-gate {
34*0Sstevel@tonic-gate int y;
35*0Sstevel@tonic-gate char *sp, *end, *start, *maxx;
36*0Sstevel@tonic-gate ptrdiff_t minx;
37*0Sstevel@tonic-gate
38*0Sstevel@tonic-gate #ifdef DEBUG
39*0Sstevel@tonic-gate fprintf(outf, "WERASE(%0.2o)\n", win);
40*0Sstevel@tonic-gate #endif
41*0Sstevel@tonic-gate for (y = 0; y < win->_maxy; y++) {
42*0Sstevel@tonic-gate minx = _NOCHANGE;
43*0Sstevel@tonic-gate start = win->_y[y];
44*0Sstevel@tonic-gate end = &start[win->_maxx];
45*0Sstevel@tonic-gate for (sp = start; sp < end; sp++)
46*0Sstevel@tonic-gate if (*sp != ' ') {
47*0Sstevel@tonic-gate maxx = sp;
48*0Sstevel@tonic-gate if (minx == _NOCHANGE)
49*0Sstevel@tonic-gate minx = sp - start;
50*0Sstevel@tonic-gate *sp = ' ';
51*0Sstevel@tonic-gate }
52*0Sstevel@tonic-gate if (minx != _NOCHANGE)
53*0Sstevel@tonic-gate (void) touchline(win, y, (int)minx,
54*0Sstevel@tonic-gate (int)(maxx - win->_y[y]));
55*0Sstevel@tonic-gate }
56*0Sstevel@tonic-gate win->_curx = win->_cury = 0;
57*0Sstevel@tonic-gate return (OK);
58*0Sstevel@tonic-gate }
59