4.3BSD - /usr/src/usr.lib/libcurses/erase.c

   1: /*
   2:  * Copyright (c) 1980 Regents of the University of California.
   3:  * All rights reserved.  The Berkeley software License Agreement
   4:  * specifies the terms and conditions for redistribution.
   5:  */
   6: 
   7: #ifndef lint
   8: static char sccsid[] = "@(#)erase.c	5.1 (Berkeley) 6/7/85";
   9: #endif not lint
  10: 
  11: # include   "curses.ext"
  12: 
  13: /*
  14:  *	This routine erases everything on the window.
  15:  *
  16:  */
  17: werase(win)
  18: reg WINDOW  *win; {
  19: 
  20:     reg int     y;
  21:     reg char    *sp, *end, *start, *maxx;
  22:     reg int     minx;
  23: 
  24: # ifdef DEBUG
  25:     fprintf(outf, "WERASE(%0.2o)\n", win);
  26: # endif
  27:     for (y = 0; y < win->_maxy; y++) {
  28:         minx = _NOCHANGE;
  29:         start = win->_y[y];
  30:         end = &start[win->_maxx];
  31:         for (sp = start; sp < end; sp++)
  32:             if (*sp != ' ') {
  33:                 maxx = sp;
  34:                 if (minx == _NOCHANGE)
  35:                     minx = sp - start;
  36:                 *sp = ' ';
  37:             }
  38:         if (minx != _NOCHANGE)
  39:             touchline(win, y, minx, maxx - win->_y[y]);
  40:     }
  41:     win->_curx = win->_cury = 0;
  42: }

Defined functions

Defined variables