1 /* 2 * Copyright (c) 1981 Regents of the University of California. 3 * All rights reserved. 4 * 5 * %sccs.include.redist.c% 6 */ 7 8 #ifndef lint 9 static char sccsid[] = "@(#)erase.c 5.5 (Berkeley) 08/23/92"; 10 #endif /* not lint */ 11 12 #include <curses.h> 13 14 /* 15 * werase -- 16 * Erases everything on the window. 17 */ 18 int 19 werase(win) 20 register WINDOW *win; 21 { 22 23 register int minx, y; 24 register char *sp, *end, *start, *maxx; 25 26 #ifdef DEBUG 27 __TRACE("werase: (%0.2o)\n", win); 28 #endif 29 for (y = 0; y < win->_maxy; y++) { 30 minx = _NOCHANGE; 31 start = win->_y[y]; 32 end = &start[win->_maxx]; 33 for (sp = start; sp < end; sp++) 34 if (*sp != ' ') { 35 maxx = sp; 36 if (minx == _NOCHANGE) 37 minx = sp - start; 38 *sp = ' '; 39 } 40 if (minx != _NOCHANGE) 41 touchline(win, y, minx, maxx - win->_y[y]); 42 } 43 win->_curx = win->_cury = 0; 44 return (OK); 45 } 46