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6e1c93d0 | 1 | /* |
aa9178fc KB |
2 | * Copyright (c) 1981, 1993 |
3 | * The Regents of the University of California. All rights reserved. | |
2f14f200 | 4 | * |
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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. | |
6e1c93d0 DF |
32 | */ |
33 | ||
34 | #ifndef lint | |
ad787160 | 35 | static char sccsid[] = "@(#)erase.c 8.1 (Berkeley) 6/4/93"; |
51f945cc | 36 | #endif /* not lint */ |
6e1c93d0 | 37 | |
51f945cc | 38 | #include <curses.h> |
cc1a8c38 KA |
39 | |
40 | /* | |
51f945cc KB |
41 | * werase -- |
42 | * Erases everything on the window. | |
cc1a8c38 | 43 | */ |
51f945cc | 44 | int |
cc1a8c38 | 45 | werase(win) |
51f945cc KB |
46 | register WINDOW *win; |
47 | { | |
cc1a8c38 | 48 | |
51f945cc | 49 | register int minx, y; |
1c04a491 | 50 | register __LDATA *sp, *end, *start, *maxx; |
cc1a8c38 | 51 | |
51f945cc | 52 | #ifdef DEBUG |
14a0061d | 53 | __CTRACE("werase: (%0.2o)\n", win); |
51f945cc | 54 | #endif |
0c5c5188 EA |
55 | for (y = 0; y < win->maxy; y++) { |
56 | minx = -1; | |
57 | start = win->lines[y]->line; | |
58 | end = &start[win->maxx]; | |
cc1a8c38 | 59 | for (sp = start; sp < end; sp++) |
1c04a491 EA |
60 | if (sp->ch != ' ' || sp->attr != 0) { |
61 | maxx = sp; | |
0c5c5188 | 62 | if (minx == -1) |
cc1a8c38 | 63 | minx = sp - start; |
1c04a491 EA |
64 | sp->ch = ' '; |
65 | sp->attr = 0; | |
cc1a8c38 | 66 | } |
0c5c5188 | 67 | if (minx != -1) |
e3923e32 EA |
68 | __touchline(win, y, minx, maxx - win->lines[y]->line, |
69 | 0); | |
cc1a8c38 | 70 | } |
79ec5a07 | 71 | return (OK); |
cc1a8c38 | 72 | } |