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- /*
- * Copyright (c) 1981 Regents of the University of California.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms are permitted
- * provided that the above copyright notice and this paragraph are
- * duplicated in all such forms and that any documentation,
- * advertising materials, and other materials related to such
- * distribution and use acknowledge that the software was developed
- * by the University of California, Berkeley. The name of the
- * University may not be used to endorse or promote products derived
- * from this software without specific prior written permission.
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
- * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
- */
-
- #ifndef lint
- static char sccsid[] = "@(#)erase.c 5.3 (Berkeley) 6/30/88";
- #endif /* not lint */
-
- # include "curses.ext"
-
- /*
- * This routine erases everything on the window.
- *
- */
- void werase(win)
- reg WINDOW *win; {
-
- reg int y;
- reg char *sp, *end, *start, *maxx;
- reg int minx;
-
- # ifdef DEBUG
- fprintf(outf, "WERASE(%0.2o)\n", win);
- # endif
- for (y = 0; y < win->_maxy; y++) {
- minx = _NOCHANGE;
- start = win->_y[y];
- end = &start[win->_maxx];
- for (sp = start; sp < end; sp++)
- if (*sp != ' ') {
- maxx = sp;
- if (minx == _NOCHANGE)
- minx = sp - start;
- *sp = ' ';
- }
- if (minx != _NOCHANGE)
- touchline(win, y, minx, (int)(maxx - win->_y[y]));
- }
- win->_curx = win->_cury = 0;
- }
-