cmd/lpadmin/pick_opts.c

	pick_opts.c revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
 * 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 1993 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

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


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

#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <limits.h>
#include <sys/types.h>
#include <stdlib.h>
#include <libintl.h>

#include "lp.h"
#include "class.h"
#include "printers.h"
#include "msgs.h"

char **
pick_opts(char * infile_opts, char ** new_opts)
{
    char * flasts = NULL;
    char * old_opt;
    char ** final_opts = NULL;
    int key_len;
    int keyfound = 0;
    char ** head;

    if (infile_opts == NULL || new_opts == NULL) {
    (void) printf("lpadmin error: Cannot process -o options");
        return (NULL);
    }

    head = new_opts;
    for (; *new_opts != NULL; new_opts++) {
        if (strlen(*new_opts) > (strcspn(*new_opts, "=") + 1)) {
            if ((addlist(&final_opts, *new_opts)) != 0) {
                fprintf(stderr,
                    gettext("lpadmin: System Error %d\n"),
                    errno);

                return (NULL);
            }
        }
    }
    /*
     * For each currently set option, ie, those already in the file,
     * compare to new list from lpadmin (new_opts).
     */
    for (old_opt = strtok_r(infile_opts, LP_SEP, &flasts);
        old_opt != NULL; old_opt = strtok_r(NULL, LP_SEP, &flasts)) {

        keyfound = 0;

        for (new_opts = head; *new_opts != NULL; new_opts++) {

            key_len = strcspn(*new_opts, "=");
            /*
             * if the keys match, and the the key from the
             * lpadmin -o has a value, take the new value from
             * lpadmin
             */
            if ((strncmp(old_opt, *new_opts, key_len + 1)) == 0) {
                keyfound++;
            }
        }
        if (keyfound == 0) {
            if ((addlist(&final_opts, old_opt)) != 0) {
                fprintf(stderr,
                    gettext("lpadmin: System Error %d\n"),
                    errno);

                return (NULL);
            }
        }

    }

    return (final_opts);
}