ucblib/libcurses/clrtoeol.c

/*
 * Copyright 2001 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

/*  Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */
/*    All Rights Reserved   */

/*
 * Copyright (c) 1980 Regents of the University of California.
 * All rights reserved.  The Berkeley software License Agreement
 * specifies the terms and conditions for redistribution.
 */

#pragma ident   "%Z%%M% %I% %E% SMI"

/*LINTLIBRARY*/

#ifndef lint
static char
sccsid[] = "@(#)clrtoeol.c 1.6 88/02/08 SMI"; /* from UCB 5.1 85/06/07 */
#endif /* not lint */

#include    <stddef.h>
#include    "curses.ext"

/*
 *  This routine clears up to the end of line
 */

int
wclrtoeol(WINDOW *win)
{
    char    *sp, *end;
    int y, x;
    char    *maxx;
    ptrdiff_t   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
     */
    (void) 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
    return (OK);
}