/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (the "License").  You may not use this file except in compliance
 * with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*      Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
/*        All Rights Reserved   */


#ident  "%Z%%M% %I%     %E% SMI"        /* SVr4.0 1.7   */
/* EMACS_MODES: !fill, lnumb, !overwrite, !nodelete, !picture */

#include "errno.h"
#include "string.h"
#include "stdlib.h"

#include "lp.h"
#include "filters.h"

/**
 ** delfilter() - DELETE A FILTER FROM FILTER TABLE
 **/

int
#if     defined(__STDC__)
delfilter (
        char *                  name
)
#else
delfilter (name)
        char                    *name;
#endif
{
        register _FILTER        *pf;


        if (!name || !*name) {
                errno = EINVAL;
                return (-1);
        }

        if (STREQU(NAME_ALL, name)) {
                trash_filters ();
                goto Done;
        }

        /*
         * Don't need to check for ENOENT, because if it is set,
         * well that's what we want to return anyway!
         */
        if (!filters && get_and_load() == -1 /* && errno != ENOENT */ )
                return (-1);

        if (!(pf = search_filter(name))) {
                errno = ENOENT;
                return (-1);
        }

        free_filter (pf);
        for (; pf->name; pf++)
                *pf = *(pf+1);

        nfilters--;
        filters = (_FILTER *)Realloc(
                (char *)filters, (nfilters + 1) * sizeof(_FILTER)
        );
        if (!filters) {
                errno = ENOMEM;
                return (-1);
        }

/*      filters[nfilters].name = 0; */  /* last for loop above did this */

Done:   return (dumpfilters((char *)0));
}