/*  OSSP rc - Run-command processor
**  Copyright (c) 2002 Ralf S. Engelschall
**  Copyright (c) 2002 Cable & Wireless Deutschland GmbH
**  Copyright (c) 2002 The OSSP Project <http://www.ossp.org/>
**
**  This file is part of OSSP rc, a portable Run-command processor
**  which can be found at http://www.ossp.org/pkg/lib/rc/
**
**  Permission to use, copy, modify, and distribute this software for
**  any purpose with or without fee is hereby granted, provided that
**  the above copyright notice and this permission notice appear in all
**  copies.
**
**  THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
**  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
**  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
**  IN NO EVENT SHALL THE AUTHORS AND COPYRIGHT HOLDERS AND THEIR
**  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
**  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
**  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
**  USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
**  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
**  OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
**  OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
**  SUCH DAMAGE.
**
**  rc_config.c: Run-command processor ISO C source file
*/

#include <stdio.h>
#include <stdlib.h>

#include "rc.h"
#include "rc_private.h"
#include "rc_const.h"               /* String constants                 */
#include "rc_config.h"              /* Config types and constants       */
#include "rc_option.h"              /* Option operations rely on popt   */

static rc_config_t *s_pInst = NULL; /* Singleton config instance        */


/***************************************
* configConstruct(void)                *
* Construct a configuration            *
***************************************/
rc_return_t configConstruct(void)
{
    ex_t Except;

    if (s_pInst == NULL) {                  /* If we don't have one     */
        s_pInst = malloc(sizeof(s_pInst));  /* yet, then allocate       */
        if (!s_pInst)                       /* a config instance        */
            return(RC_THROW(RC_ERR_MEM));
        s_pInst->m_nLocks = 0;

        ex_try {
            clioptConstruct();              /* Make a config instance   */
        }
        ex_catch(Except) {
            rethrow;
        }
    }
    s_pInst->m_nLocks++;                    /* FIXME not threadsafe     */

    return(RC_THROW(RC_OK));
}

/***************************************
* configGetXXXX(void)                  *
* Configuration accessors              *
***************************************/
short configGetvers(void)
{
    ex_t Except;
    short nVer = 0;

    if (s_pInst != NULL) {
        ex_try {

        }
        ex_catch(Except) {
            rethrow;
        }
    }
    else {
        RC_THROW(RC_ERR_USE);
        return(NULL);
    }

    return(nVer);
}

/************************************************
* configLoad(int, char **)                      *
* Load a configuration                          *
************************************************/
rc_return_t configLoad(int argc, char *argv[])
{
    ex_t Except;

    ex_try {    /* Parse through each type of option           */
/* FIXME s_pInst->pOpt will hold a copy of the command line */
//        coptParse(s_pInst->pOpt);   /* First priority options  */
//        eoptParse(s_pInst->pOpt);   /* Medium priority options */
//        foptParse(s_pInst->pOpt);   /* Low priority options    */
        coptParse(argc, argv); /* FIXME Patch for now */
/* FIXME s_pInst->pOpt will hold a copy of the command line */
    }
    ex_catch(Except) {
        rethrow;
    }

    ex_try {
    }
    ex_catch(Except) {
        rethrow;
    }

    return(RC_THROW(RC_OK));
}

/***************************************
* configDestruct(void)                 *
* Destruct a configuration             *
***************************************/
rc_return_t configDestruct(void)
{
    ex_t Except;

    if (s_pInst) {
        if (--s_pInst->m_nLocks == 0) { /* If m_nLocks is 0, dealloc    */
            ex_try {                    /* FIXME, not thread-safe       */
                clioptDestruct();
            }
            ex_catch(Except) {
                rethrow;
            }

            free(s_pInst);              /* Deallocate config and        */
            s_pInst = NULL;             /* clear its reference          */
        }
    }
    else
        return(RC_THROW(RC_ERR_USE));

    return(RC_THROW(RC_OK));
}