harbour-core/harbour/source/rdd/hbsix/sxtable.c

/*
 * $Id$
 */

/*
 * Harbour Project source code:
 *    SIX compatible functions:
 *          Sx_GetLocks()
 *          Sx_IsFLocked()
 *          Sx_IsReadOnly()
 *          Sx_IsShared()
 *          Sx_IDtype()
 *          Sx_TableType()
 *          Sx_TableName()
 *          Sx_Rollback()
 *          Sx_RLock()
 *          Sx_UnLock()
 *          Sx_SetPass()
 *          Sx_DBFencrypt()
 *          Sx_DBFdecrypt()
 *          Sx_MemoPack()
 *          Sx_SetTurbo()
 *          Sx_TurboArea()
 *          _sxOpenInit() (internal function used by _sx_INIinit())
 *
 * Copyright 2007 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 "hbapiitm.h"
#include "hbapifs.h"
#include "hbapirdd.h"
#include "hbapierr.h"


HB_FUNC( SX_GETLOCKS )
{
   AREAP pArea = ( AREAP ) hb_rddGetCurrentWorkAreaPointer();

   if( pArea )
   {
      PHB_ITEM pList = hb_itemArrayNew( 0 );
      SELF_INFO( pArea, DBI_GETLOCKARRAY, pList );
      hb_itemReturnRelease( pList );
   }
}

HB_FUNC( SX_ISFLOCKED )
{
   AREAP pArea = ( AREAP ) hb_rddGetCurrentWorkAreaPointer();
   BOOL fLocked = FALSE;

   if( pArea )
   {
      PHB_ITEM pItem = hb_itemNew( NULL );
      SELF_INFO( pArea, DBI_ISFLOCK, pItem );
      fLocked = hb_itemGetL( pItem );
      hb_itemRelease( pItem );
   }

   hb_retl( fLocked );
}

HB_FUNC( SX_ISREADONLY )
{
   AREAP pArea = ( AREAP ) hb_rddGetCurrentWorkAreaPointer();
   BOOL fReadOnly = FALSE;

   if( pArea )
   {
      PHB_ITEM pItem = hb_itemNew( NULL );
      SELF_INFO( pArea, DBI_ISREADONLY, pItem );
      fReadOnly = hb_itemGetL( pItem );
      hb_itemRelease( pItem );
   }

   hb_retl( fReadOnly );
}

HB_FUNC( SX_ISSHARED )
{
   AREAP pArea = ( AREAP ) hb_rddGetCurrentWorkAreaPointer();
   BOOL fShared = FALSE;

   if( pArea )
   {
      PHB_ITEM pItem = hb_itemNew( NULL );
      SELF_INFO( pArea, DBI_SHARED, pItem );
      fShared = hb_itemGetL( pItem );
      hb_itemRelease( pItem );
   }

   hb_retl( fShared );
}

HB_FUNC( SX_IDTYPE )
{
   AREAP pArea = ( AREAP ) hb_rddGetCurrentWorkAreaPointer();
   int iType = 0;

   if( pArea )
   {
      PHB_ITEM pItem = hb_itemNew( NULL );
      if( SELF_RECINFO( pArea, NULL, DBRI_ENCRYPTED, pItem ) == SUCCESS )
         iType = hb_itemGetL( pItem ) ? 2 : 1;
      hb_itemRelease( pItem );
   }

   hb_retni( iType );
}

HB_FUNC( SX_TABLETYPE )
{
   AREAP pArea = ( AREAP ) hb_rddGetCurrentWorkAreaPointer();
   int iType = 0;

   if( pArea )
   {
      PHB_ITEM pItem = hb_itemNew( NULL );
      if( SELF_INFO( pArea, DBI_ISENCRYPTED, pItem ) == SUCCESS )
         iType = hb_itemGetL( pItem ) ? 2 : 1;
      hb_itemRelease( pItem );
   }

   hb_retni( iType );
}

HB_FUNC( SX_TABLENAME )
{
   AREAP pArea = ( AREAP ) hb_rddGetCurrentWorkAreaPointer();

   if( pArea )
   {
      PHB_ITEM pList = hb_itemNew( NULL );
      SELF_INFO( pArea, DBI_FULLPATH, pList );
      hb_itemReturnRelease( pList );
   }
   else
      hb_retc( NULL );
}

static void hb_sxRollBackChild( AREAP pArea, PHB_ITEM pItem )
{
   LPDBRELINFO lpdbRelation = pArea->lpdbRelations;

   while( lpdbRelation )
   {
      if( SELF_INFO( lpdbRelation->lpaChild, DBI_ROLLBACK, pItem ) != SUCCESS )
         break;
      hb_sxRollBackChild( lpdbRelation->lpaChild, pItem );
      lpdbRelation = lpdbRelation->lpdbriNext;
   }
}

HB_FUNC( SX_ROLLBACK )
{
   BOOL fResult = FALSE, fRollChild = FALSE;
   int iArea = 0;
   AREAP pArea;

   if( ISNUM( 1 ) )
   {
      iArea = hb_parni( 1 );
      fRollChild = iArea == 0;
   }

   if( iArea )
      pArea = ( AREAP ) hb_rddGetWorkAreaPointer( iArea );
   else
      pArea = ( AREAP ) hb_rddGetCurrentWorkAreaPointer();

   if( pArea )
   {
      PHB_ITEM pItem = hb_itemNew( NULL );
      fResult = SELF_INFO( pArea, DBI_ROLLBACK, pItem ) == SUCCESS;
      if( fResult && fRollChild )
         hb_sxRollBackChild( pArea, pItem );
      hb_itemRelease( pItem );
   }

   hb_retl( fResult );
}

HB_FUNC( SX_RLOCK )
{
   AREAP pArea = ( AREAP ) hb_rddGetCurrentWorkAreaPointer();
   BOOL fResult = FALSE;
   PHB_ITEM pResult = NULL, pRecords;

   if( pArea )
   {
      DBLOCKINFO dbLockInfo;
      dbLockInfo.fResult = FALSE;
      dbLockInfo.uiMethod = DBLM_MULTIPLE;
      pRecords = hb_param( 1, HB_IT_ARRAY );
      if( pRecords )
      {
         ULONG ul, ulLen = hb_arrayLen( pRecords );
         pResult = hb_itemArrayNew( ulLen );
         for( ul = 1; ul <= ulLen; ++ul )
         {
            dbLockInfo.itmRecID = hb_arrayGetItemPtr( pRecords, ul );
            SELF_LOCK( pArea, &dbLockInfo );
            hb_arraySetL( pResult, ul, dbLockInfo.fResult );
         }
      }
      else
      {
         dbLockInfo.itmRecID = hb_param( 1, HB_IT_ANY );
         SELF_LOCK( pArea, &dbLockInfo );
         fResult = dbLockInfo.fResult;
      }
   }

   if( pResult )
      hb_itemReturnRelease( pResult );
   else
      hb_retl( fResult );
}

HB_FUNC( SX_UNLOCK )
{
   AREAP pArea = ( AREAP ) hb_rddGetCurrentWorkAreaPointer();

   if( pArea )
   {
      PHB_ITEM pRecords = hb_param( 1, HB_IT_ARRAY );
      if( pRecords )
      {
         ULONG ul, ulLen = hb_arrayLen( pRecords );
         for( ul = 1; ul <= ulLen; ++ul )
         {
            SELF_UNLOCK( pArea, hb_arrayGetItemPtr( pRecords, ul ) );
         }
      }
      else
      {
         SELF_UNLOCK( pArea, hb_param( 1, HB_IT_ANY ) );
      }
   }
}

HB_FUNC( SX_SETPASS )
{
   int iPCount = hb_pcount();
   BOOL fResult = FALSE;
   PHB_ITEM pItem;

   if( iPCount >=1 )
   {
      if( ISCHAR( 1 ) )
      {
         AREAP pArea = ( AREAP ) hb_rddGetCurrentWorkAreaPointer();
         if( pArea )
         {
            pItem = hb_itemParam( 1 );
            if( SELF_INFO( pArea, DBI_PASSWORD, pItem ) == SUCCESS )
               fResult = TRUE;
            hb_itemRelease( pItem );
         }
      }
   }
   else if( iPCount >= 2 || iPCount <= 4 )
   {
      if( ISCHAR( 1 ) && ISNUM( 2 ) && ( iPCount < 3 || ISCHAR( 3 ) ) &&
          ( iPCount < 4 || ISNUM( 4 ) ) )
      {
         /* Set pending password for table which will be open
          * 3-rd and 4-th parameters are optional Harbour extensions
          * with RDD name and connection number.
          */
         LPRDDNODE  pRDDNode;
         USHORT     uiRddID;
         const char * szDriver;

         if( iPCount == 2 ) /* no RDD parameter, use default */
            szDriver = hb_rddDefaultDrv( NULL );
         else
            szDriver = hb_parc( 3 );
         pRDDNode = hb_rddFindNode( szDriver, &uiRddID );   /* find the RDDNODE */
         if( pRDDNode )
         {
            pItem = hb_itemParam( 1 );
            if( SELF_RDDINFO( pRDDNode, RDDI_PENDINGPASSWORD, hb_parnl( 4 ), pItem ) == SUCCESS )
               fResult = TRUE;
            hb_itemRelease( pItem );
         }
      }
      else if( iPCount == 2 && ISNUM( 1 ) && ISCHAR( 2 ) )
      {
         AREAP pArea = ( AREAP ) hb_rddGetCurrentWorkAreaPointer();
         if( pArea )
         {
            /* Undocumented SIX3 extension */
            switch( hb_parni( 1 ) )
            {
               case 1:  /* return current password key in raw form */
                  pItem = hb_itemNew( NULL );
                  if( SELF_INFO( pArea, DBI_PASSWORD, pItem ) == SUCCESS )
                     hb_itemReturn( pItem );
                  hb_itemRelease( pItem );
                  break;
               case 2:  /* set raw password key */
                  /* not implemented */
                  break;
               case 3:  /* mark table as encrypted */
                  /* intentionally not implemented */
                  break;
               case 4:  /* mark table as decrypted */
                  /* intentionally not implemented */
                  break;
            }
            return;
         }
      }
   }

   hb_retl( fResult );
}

HB_FUNC( SX_DBFENCRYPT )
{
   AREAP pArea = ( AREAP ) hb_rddGetCurrentWorkAreaPointer();
   BOOL fResult = FALSE;

   if( pArea )
   {
      /* Optional parameter with password is Harbour extension */
#ifdef HB_SIX3_STRICT
      PHB_ITEM pItem = hb_itemNew( NULL );
#else
      PHB_ITEM pItem = hb_itemParam( 1 );
#endif
      if( SELF_INFO( pArea, DBI_ENCRYPT, pItem ) == SUCCESS )
         fResult = hb_itemGetL( pItem );
      hb_itemRelease( pItem );
   }
   hb_retl( fResult );
}

HB_FUNC( SX_DBFDECRYPT )
{
   AREAP pArea = ( AREAP ) hb_rddGetCurrentWorkAreaPointer();
   BOOL fResult = FALSE;

   if( pArea )
   {
      PHB_ITEM pItem = hb_itemParam( 1 );
      if( SELF_INFO( pArea, DBI_DECRYPT, pItem ) == SUCCESS )
         fResult = hb_itemGetL( pItem );
      hb_itemRelease( pItem );
   }
   hb_retl( fResult );
}

HB_FUNC( SX_MEMOPACK )
{
   AREAP pArea = ( AREAP ) hb_rddGetCurrentWorkAreaPointer();
   BOOL fResult = FALSE;

   if( pArea )
   {
      PHB_ITEM pItem = hb_itemArrayNew( 3 );
      int i, iPCount = hb_pcount();
      for( i = 1; i <= iPCount; ++i )
         hb_arraySet( pItem, i, hb_param( i, HB_IT_ANY ) );
      fResult = SELF_INFO( pArea, DBI_MEMOPACK, pItem ) == SUCCESS;
      hb_itemRelease( pItem );
   }
   hb_retl( fResult );
}

HB_FUNC( SX_TURBOAREA )
{
   AREAP pArea = ( AREAP ) hb_rddGetCurrentWorkAreaPointer();

   if( pArea )
   {
      PHB_ITEM pItem = hb_itemParam( 1 );
      if( hb_pcount() > 0 && HB_IS_NIL( pItem ) )
         hb_itemPutNI( pItem, 0 );
      if( SELF_INFO( pArea, DBI_DIRTYREAD, pItem ) != SUCCESS )
         hb_itemPutL( pItem, FALSE );
      hb_itemReturnRelease( pItem );
   }
   else
      hb_retl( FALSE );
}

HB_FUNC( SX_SETTURBO )
{
   LPRDDNODE  pRDDNode;
   USHORT     uiRddID;
   const char * szDriver;

   szDriver = hb_parc( 2 );
   if( !szDriver ) /* no VIA RDD parameter, use default */
      szDriver = hb_rddDefaultDrv( NULL );

   pRDDNode = hb_rddFindNode( szDriver, &uiRddID );  /* find the RDDNODE */
   if( !pRDDNode )
      hb_errRT_BASE_SubstR( EG_ARG, 3012, NULL, HB_ERR_FUNCNAME,
                            HB_ERR_ARGS_BASEPARAMS );
   else
   {
      PHB_ITEM pItem = hb_itemParam( 1 );
      if( hb_pcount() > 0 && HB_IS_NIL( pItem ) )
         hb_itemPutNI( pItem, 0 );
      if( SELF_RDDINFO( pRDDNode, RDDI_DIRTYREAD, 0, pItem ) != SUCCESS )
         hb_itemPutL( pItem, FALSE );
      hb_itemReturnRelease( pItem );
   }
}

/*
 * _sxOpenInit( nArea, xShared, xReadOnly, xAlias )
 */
HB_FUNC( _SXOPENINIT )
{
   AREAP pArea = NULL;
   int iArea = hb_parni( 1 );

   if( iArea )
      pArea = ( AREAP ) hb_rddGetWorkAreaPointer( iArea );

   if( pArea )
   {
      LPDBOPENINFO pInfo = NULL;
      PHB_ITEM pItem = hb_itemNew( NULL );

      if( SELF_INFO( pArea, DBI_OPENINFO, pItem ) )
         pInfo = ( LPDBOPENINFO ) hb_itemGetPtr( pItem );
      hb_itemRelease( pItem );
      if( pInfo )
      {
         if( ISLOG( 2 ) )
            pInfo->fShared = hb_parl( 2 );
         if( ISLOG( 3 ) )
            pInfo->fReadonly = hb_parl( 2 );
         if( ISCHAR( 4 ) )
         {
            char * szAlias = hb_parc( 1 );
            if( szAlias && szAlias[ 0 ] )
               pInfo->atomAlias = ( BYTE * ) hb_dynsymName( hb_dynsymGet( szAlias ) );
            else
               pInfo->atomAlias = ( BYTE * ) "";
         }
      }
   }
}