/*
 * 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   */

/* EMACS_MODES: !fill, lnumb, !overwrite, !nodelete, !picture */

#include "ctype.h"
#include "string.h"
#include "stdlib.h"
#include "unistd.h"

#include "lp.h"

/**
 ** isprinter() - SEE IF ARGUMENT IS A REAL PRINTER
 **/

int
#if     defined(__STDC__)
isprinter (
        char *                  str
)
#else
isprinter (str)
        char                    *str;
#endif
{
        char                    *path   = 0;

        int                     bool;

        bool = (
                str
             && *str
             && (path = getprinterfile(str, CONFIGFILE))
             && Access(path, F_OK) == 0
        );
        if (path)
                Free (path);
        return (bool);
}

/**
 ** isclass() - SEE IF ARGUMENT IS A REAL CLASS
 **/

int
#if     defined(__STDC__)
isclass (
        char *                  str
)
#else
isclass (str)
        char                    *str;
#endif
{
        char                    *path   = 0;

        int                     bool;

        bool = (
                str
             && *str
             && (path = getclassfile(str))
             && Access(path, F_OK) == 0
        );
        if (path)
                Free (path);
        return (bool);
}

/**
 ** isrequest() - SEE IF ARGUMENT LOOKS LIKE A REAL REQUEST
 **/

int
#if     defined(__STDC__)
isrequest (
        char *                  str
)
#else
isrequest (str)
        char                    *str;
#endif
{
        char                    *dashp;

        /*
         * Valid print requests have the form
         *
         *      dest-NNN
         *
         * where ``dest'' looks like a printer or class name.
         * An earlier version of this routine checked to see if
         * the ``dest'' was an EXISTING printer or class, but
         * that caused problems with valid requests moved from
         * a deleted printer or class (the request ID doesn't
         * change in the new LP).
         */

        if (!str || !*str)
                return (0);

        if (!(dashp = strrchr(str, '-')))
                return (0);

        if (dashp == str)
            return(0);

        *dashp = 0;
        if (!syn_name(str)) {
                *dashp = '-';
                return (0);
        }
        *dashp++ = '-';

        if (!isnumber(dashp))
                return (0);

        return (1);
}

int
#if     defined(__STDC__)
isnumber (
        char *                  s
)
#else
isnumber (s)
        char                    *s;
#endif
{
        register int            c;

        if (!s || !*s)
                return (0);
        while ((c = *(s++)) != '\0')
                if (!isdigit(c))
                        return (0);
        return (1);
}