projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 15637ed4 | 1 | /* |
| b80b8de3 AC |
2 | * Copyright (c) 1981, 1993 |
| 3 | * The Regents of the University of California. All rights reserved. | |
| 15637ed4 RG |
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 | |
| b80b8de3 AC |
35 | static char sccsid[] = "@(#)erase.c 8.1 (Berkeley) 6/4/93"; |
| 36 | #endif /* not lint */ | |
| 15637ed4 | 37 | |
| b80b8de3 | 38 | #include <curses.h> |
| 15637ed4 RG |
39 | |
| 40 | /* | |
| b80b8de3 AC |
41 | * werase -- |
| 42 | * Erases everything on the window. | |
| 15637ed4 | 43 | */ |
| b80b8de3 | 44 | int |
| 15637ed4 | 45 | werase(win) |
| b80b8de3 AC |
46 | register WINDOW *win; |
| 47 | { | |
| 15637ed4 | 48 | |
| b80b8de3 AC |
49 | register int minx, y; |
| 50 | register __LDATA *sp, *end, *start, *maxx; | |
| 15637ed4 | 51 | |
| b80b8de3 AC |
52 | #ifdef DEBUG |
| 53 | __CTRACE("werase: (%0.2o)\n", win); | |
| 54 | #endif | |
| 55 | for (y = 0; y < win->maxy; y++) { | |
| 56 | minx = -1; | |
| 57 | start = win->lines[y]->line; | |
| 58 | end = &start[win->maxx]; | |
| 15637ed4 | 59 | for (sp = start; sp < end; sp++) |
| b80b8de3 AC |
60 | if (sp->ch != ' ' || sp->attr != 0) { |
| 61 | maxx = sp; | |
| 62 | if (minx == -1) | |
| 15637ed4 | 63 | minx = sp - start; |
| b80b8de3 AC |
64 | sp->ch = ' '; |
| 65 | sp->attr = 0; | |
| 15637ed4 | 66 | } |
| b80b8de3 AC |
67 | if (minx != -1) |
| 68 | __touchline(win, y, minx, maxx - win->lines[y]->line, | |
| 69 | 0); | |
| 15637ed4 | 70 | } |
| b80b8de3 | 71 | return (OK); |
| 15637ed4 | 72 | } |