home *** CD-ROM | disk | FTP | other *** search
- /*
- * Copyright (c) 1981, 1993, 1994
- * The Regents of the University of California. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
- #ifndef lint
- static char sccsid[] = "@(#)erase.c 8.2 (Berkeley) 5/4/94";
- #endif /* not lint */
-
- #include "curses.h"
-
- /*
- * werase --
- * Erases everything on the window.
- */
- int
- werase(win)
- register WINDOW *win;
- {
-
- register int minx, y;
- register __LDATA *sp, *end, *start, *maxx;
-
- #ifdef DEBUG
- __CTRACE("werase: (%0.2o)\n", win);
- #endif
- for (y = 0; y < win->maxy; y++) {
- minx = -1;
- start = win->lines[y]->line;
- end = &start[win->maxx];
- for (sp = start; sp < end; sp++)
- if (sp->ch != ' ' || sp->attr != 0) {
- maxx = sp;
- if (minx == -1)
- minx = sp - start;
- sp->ch = ' ';
- sp->attr = 0;
- }
- if (minx != -1)
- __touchline(win, y, minx, maxx - win->lines[y]->line,
- 0);
- }
- return (OK);
- }
-