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15637ed4 RG |
1 | /* |
2 | * Copyright (c) 1981 Regents of the University of California. | |
3 | * All rights reserved. | |
4 | * | |
5 | * Redistribution and use in source and binary forms, with or without | |
6 | * modification, are permitted provided that the following conditions | |
7 | * are met: | |
8 | * 1. Redistributions of source code must retain the above copyright | |
9 | * notice, this list of conditions and the following disclaimer. | |
10 | * 2. Redistributions in binary form must reproduce the above copyright | |
11 | * notice, this list of conditions and the following disclaimer in the | |
12 | * documentation and/or other materials provided with the distribution. | |
13 | * 3. All advertising materials mentioning features or use of this software | |
14 | * must display the following acknowledgement: | |
15 | * This product includes software developed by the University of | |
16 | * California, Berkeley and its contributors. | |
17 | * 4. Neither the name of the University nor the names of its contributors | |
18 | * may be used to endorse or promote products derived from this software | |
19 | * without specific prior written permission. | |
20 | * | |
21 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
31 | * SUCH DAMAGE. | |
32 | */ | |
33 | ||
34 | #ifndef lint | |
35 | static char sccsid[] = "@(#)erase.c 5.4 (Berkeley) 6/1/90"; | |
36 | #endif /* not lint */ | |
37 | ||
38 | # include "curses.ext" | |
39 | ||
40 | /* | |
41 | * This routine erases everything on the window. | |
42 | * | |
43 | */ | |
44 | werase(win) | |
45 | reg WINDOW *win; { | |
46 | ||
47 | reg int y; | |
5b37262a | 48 | reg chtype *sp, *end, *start, *maxx; |
15637ed4 RG |
49 | reg int minx; |
50 | ||
51 | # ifdef DEBUG | |
52 | fprintf(outf, "WERASE(%0.2o)\n", win); | |
53 | # endif | |
54 | for (y = 0; y < win->_maxy; y++) { | |
55 | minx = _NOCHANGE; | |
56 | start = win->_y[y]; | |
57 | end = &start[win->_maxx]; | |
58 | for (sp = start; sp < end; sp++) | |
59 | if (*sp != ' ') { | |
60 | maxx = sp; | |
61 | if (minx == _NOCHANGE) | |
62 | minx = sp - start; | |
63 | *sp = ' '; | |
64 | } | |
65 | if (minx != _NOCHANGE) | |
66 | touchline(win, y, minx, maxx - win->_y[y]); | |
67 | } | |
68 | win->_curx = win->_cury = 0; | |
69 | } |