/*
 * $Id$
 */

/*
 * SixAPI Project source code:
 *
 * Copyright 2010 Andi Jahja <xharbour@telkom.net.id>
 *
 * 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/).
 */
#include "sxapi.h"

HB_FUNC( SX_SKIP )
{
   WORD  iWorkArea = SX_DUMMY_NUMBER;
   long  iSkipRec;

   if( ! _sx_Used() )
      hb_errRT_DBCMD( EG_NOTABLE, EDBCMD_NOTABLE, NULL, "SX_SKIP" );

   if( ! HB_ISNIL( 2 ) )
      iWorkArea = _sx_select( hb_param( 2, HB_IT_ANY ) );

   if( HB_ISNUM( 1 ) )
      iSkipRec = hb_parnl( 1 );
   else
      iSkipRec = 1;

   sx_Skip( iSkipRec );

   if( ! ( iWorkArea == SX_DUMMY_NUMBER ) )
      sx_Select( iWorkArea );
}

HB_FUNC( SX_DBSKIPPER )
{
   long  nSkipped   = 0;
   long  nRecs      = hb_parnl( 1 );

   if( ! ( sx_Eof() && sx_Bof() ) )
   {
      if( nRecs == 0 )
         sx_Skip( 0 );
      else if( ( nRecs > 0 ) && ! sx_Eof() )
      {
         nSkipped = 0;
         while( nSkipped < nRecs )
         {
            sx_Skip( 1 );
            if( sx_Eof() )
            {
               sx_Skip( -1 );
               nRecs = nSkipped;
            }
            else
            {
               nSkipped++;
            }
         }
      }
      else if( nRecs < 0 )
      {
         while( nSkipped > nRecs )
         {
            sx_Skip( -1 );
            if( sx_Bof() )
            {
               nRecs = nSkipped;
            }
            else
            {
               nSkipped--;
            }
         }
      }
   }

   hb_retnl( nSkipped );
}