usr/src/lib/libcurses/clrtoeol.c

/*
 * 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[] = "@(#)clrtoeol.c  5.3 (Berkeley) %G%";
#endif /* not lint */

# include       "curses.ext"

/*
 *      This routine clears up to the end of line
 *
 */
wclrtoeol(win)
reg WINDOW      *win; {

        reg char        *sp, *end;
        reg int         y, x;
        reg char        *maxx;
        reg int         minx;

        y = win->_cury;
        x = win->_curx;
        end = &win->_y[y][win->_maxx];
        minx = _NOCHANGE;
        maxx = &win->_y[y][x];
        for (sp = maxx; sp < end; sp++)
                if (*sp != ' ') {
                        maxx = sp;
                        if (minx == _NOCHANGE)
                                minx = sp - win->_y[y];
                        *sp = ' ';
                }
        /*
         * update firstch and lastch for the line
         */
        touchline(win, y, win->_curx, win->_maxx - 1);
# ifdef DEBUG
        fprintf(outf, "CLRTOEOL: minx = %d, maxx = %d, firstch = %d, lastch = %d\n", minx, maxx - win->_y[y], win->_firstch[y], win->_lastch[y]);
# endif
}