harbour-core/harbour/source/rdd/dbdetach.c

/*
 * $Id$
 */

/*
 * Harbour Project source code:
 *    .prg functions for workarea detaching
 *
 * Copyright 2008 Przemyslaw Czerpak <druzus / at / priv.onet.pl>
 * www - http://www.harbour-project.org
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2, or (at your option)
 * any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this software; see the file COPYING.  If not, write to
 * the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
 * Boston, MA 02111-1307 USA (or visit the web site http://www.gnu.org/).
 *
 * As a special exception, the Harbour Project gives permission for
 * additional uses of the text contained in its release of Harbour.
 *
 * The exception is that, if you link the Harbour libraries with other
 * files to produce an executable, this does not by itself cause the
 * resulting executable to be covered by the GNU General Public License.
 * Your use of that executable is in no way restricted on account of
 * linking the Harbour library code into it.
 *
 * This exception does not however invalidate any other reasons why
 * the executable file might be covered by the GNU General Public License.
 *
 * This exception applies only to the code released by the Harbour
 * Project under the name Harbour.  If you copy code from other
 * Harbour Project or Free Software Foundation releases into a copy of
 * Harbour, as the General Public License permits, the exception does
 * not apply to the code that you add in this way.  To avoid misleading
 * anyone as to the status of such modified files, you must delete
 * this exception notice from them.
 *
 * If you write modifications of your own for Harbour, it is your choice
 * whether to permit this exception to apply to your modifications.
 * If you do not wish that, delete this exception notice.
 *
 */

#include "hbapi.h"
#include "hbapirdd.h"
#include "hbapiitm.h"
#include "hbapierr.h"

/*
 * hb_dbDetach( [<nWorkArea>|<cAlias>], [<xCargo>] ) -> <lSuccess>
 */
HB_FUNC( HB_DBDETACH )
{
   PHB_ITEM pAlias = hb_param( 1, HB_IT_ANY );
   PHB_ITEM pCargo = hb_param( 2, HB_IT_ANY ); /* HB_IT_BLOCK in Xbase++ */
   AREAP pArea = NULL;
   int iArea;

   if( !pAlias || HB_IS_NIL( pAlias ) )
   {
      pArea = ( AREAP ) hb_rddGetCurrentWorkAreaPointer();
   }
   else if( HB_IS_STRING( pAlias ) )
   {
      char * szAlias = hb_itemGetCPtr( pAlias );
      hb_rddGetAliasNumber( szAlias, &iArea );
      if( iArea > 0 )
         pArea = ( AREAP ) hb_rddGetWorkAreaPointer( iArea );
   }
   else if( HB_IS_NUMBER( pAlias ) )
   {
      iArea = hb_itemGetNI( pAlias );
      if( iArea > 0 )
         pArea = ( AREAP ) hb_rddGetWorkAreaPointer( iArea );
   }
   else
   {
      hb_errRT_DBCMD( EG_ARG, EDBCMD_BADPARAMETER, NULL, HB_ERR_FUNCNAME );
      return;
   }

   if( pArea )
      hb_retl( hb_rddDetachArea( pArea, pCargo ) == HB_SUCCESS );
   else
      hb_errRT_DBCMD( EG_NOTABLE, EDBCMD_NOTABLE, NULL, HB_ERR_FUNCNAME );
}

/*
 * DbRequest( [<cAlias>], [<lFreeArea>], [<@xCargo>], [<lWait>] )
 *         -> <lSuccess>
 */
HB_FUNC( HB_DBREQUEST )
{
   char * szAlias;
   PHB_ITEM pCargo;
   BOOL fNewArea, fWait;
   AREAP pArea;

   if( ISNIL( 1 ) || ISCHAR( 1 ) )
   {
      szAlias = hb_parc( 1 );
      fNewArea = ISLOG( 2 ) && hb_parl( 2 );
      fWait = ISLOG( 4 ) && hb_parl( 4 );
      pCargo = ISBYREF( 3 ) ? hb_itemNew( NULL ) : NULL;

      pArea = hb_rddRequestArea( szAlias, pCargo, fNewArea, fWait );
      if( pArea )
         hb_rddSelectWorkAreaNumber( pArea->uiArea );

      if( pCargo )
      {
         hb_itemParamStoreForward( 3, pCargo );
         hb_itemRelease( pCargo );
      }

      hb_retl( pArea != NULL );
   }
   else
      hb_errRT_DBCMD( EG_ARG, EDBCMD_BADPARAMETER, NULL, HB_ERR_FUNCNAME );
}