projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 6e1c93d0 | 1 | /* |
| 2f14f200 KB |
2 | * Copyright (c) 1981 Regents of the University of California. |
| 3 | * All rights reserved. | |
| 4 | * | |
| 5 | * Redistribution and use in source and binary forms are permitted | |
| a399f6c8 KB |
6 | * provided that the above copyright notice and this paragraph are |
| 7 | * duplicated in all such forms and that any documentation, | |
| 8 | * advertising materials, and other materials related to such | |
| 9 | * distribution and use acknowledge that the software was developed | |
| 10 | * by the University of California, Berkeley. The name of the | |
| 11 | * University may not be used to endorse or promote products derived | |
| 12 | * from this software without specific prior written permission. | |
| 13 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR | |
| 14 | * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED | |
| 15 | * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. | |
| 6e1c93d0 DF |
16 | */ |
| 17 | ||
| 18 | #ifndef lint | |
| a399f6c8 | 19 | static char sccsid[] = "@(#)erase.c 5.3 (Berkeley) %G%"; |
| 2f14f200 | 20 | #endif /* not lint */ |
| 6e1c93d0 | 21 | |
| cc1a8c38 KA |
22 | # include "curses.ext" |
| 23 | ||
| 24 | /* | |
| 25 | * This routine erases everything on the window. | |
| 26 | * | |
| cc1a8c38 KA |
27 | */ |
| 28 | werase(win) | |
| 29 | reg WINDOW *win; { | |
| 30 | ||
| 31 | reg int y; | |
| 32 | reg char *sp, *end, *start, *maxx; | |
| 33 | reg int minx; | |
| 34 | ||
| c4a44a4e KA |
35 | # ifdef DEBUG |
| 36 | fprintf(outf, "WERASE(%0.2o)\n", win); | |
| 37 | # endif | |
| cc1a8c38 KA |
38 | for (y = 0; y < win->_maxy; y++) { |
| 39 | minx = _NOCHANGE; | |
| 40 | start = win->_y[y]; | |
| 41 | end = &start[win->_maxx]; | |
| 42 | for (sp = start; sp < end; sp++) | |
| 43 | if (*sp != ' ') { | |
| 44 | maxx = sp; | |
| 45 | if (minx == _NOCHANGE) | |
| 46 | minx = sp - start; | |
| 47 | *sp = ' '; | |
| 48 | } | |
| f06658c3 JB |
49 | if (minx != _NOCHANGE) |
| 50 | touchline(win, y, minx, maxx - win->_y[y]); | |
| cc1a8c38 KA |
51 | } |
| 52 | win->_curx = win->_cury = 0; | |
| 53 | } |