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harbour-core/harbour/source/rdd/dbf1.c
Przemyslaw Czerpak 987fff2601 2009-02-16 17:44 UTC+0100 Przemyslaw Czerpak (druzus/at/priv.onet.pl) 
* harbour/include/dbinfo.ch
    + added DBI_ISTEMPORARY

  * harbour/include/hbapirdd.h
  * harbour/source/rdd/wafunc.c
    + added hb_rddCreateTableTemp() C function to create temporary
      table which are automatically deleted on close. All indexes and
      memo files for such tables are also in temporary files and
      automatically deleted on close. Please remember that Harbour uses
      OS functions to create temporary files so it's installation dependent
      how much disk space is available for them. Some RDDs may also do
      not create temporary files but keep everything in memory if they
      decide it's more efficient.

  * harbour/source/rdd/dbcmd.c
    + added .prg function to create temporary files:
         dbCreateTemp( <cAlias>, <aStruct>, <cRDD>, ;
                       <cCodePage>, <nConnection> ) -> <lSuccess>
      Not all RDDs have to support it. It's verified by support for
      DBI_ISTEMPORARY dbInfo() action.

  * harbour/include/hbrdddbf.h
  * harbour/include/hbrddnsx.h
  * harbour/include/hbrddcdx.h
  * harbour/include/hbrddntx.h
  * harbour/source/rdd/dbf1.c
  * harbour/source/rdd/dbffpt/dbffpt1.c
  * harbour/source/rdd/dbfntx/dbfntx1.c
  * harbour/source/rdd/dbfnsx/dbfnsx1.c
  * harbour/source/rdd/dbfcdx/dbfcdx1.c
    + added support for temporary tables in native RDDs.

   Most of above modifications were done by Viktor Szakats.
2009-02-16 16:39:39 +00:00

5639 lines
162 KiB
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/*
* $Id$
*/
/*
* Harbour Project source code:
* DBF RDD module
*
* Copyright 1999 Bruno Cantero <bruno@issnet.net>
* 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.
*
*/
#define HB_TRIGVAR_BYREF
#include "hbapi.h"
#include "hbinit.h"
#include "hbvm.h"
#include "hbapiitm.h"
#include "hbrdddbf.h"
#include "hbdbf.h"
#include "hbapierr.h"
#include "hbapilng.h"
#include "hbset.h"
#include "hbdate.h"
#include "hbmath.h"
#include "hbdbsort.h"
#include "hbsxfunc.h"
#include "hbstack.h"
#include "error.ch"
#include "rddsys.ch"
#include "hbsxdef.ch"
#ifndef HB_CDP_SUPPORT_OFF
# include "hbapicdp.h"
#endif
static USHORT s_uiRddId = ( USHORT ) -1;
static RDDFUNCS dbfSuper;
static const RDDFUNCS dbfTable = { ( DBENTRYP_BP ) hb_dbfBof,
( DBENTRYP_BP ) hb_dbfEof,
( DBENTRYP_BP ) hb_dbfFound,
( DBENTRYP_V ) hb_dbfGoBottom,
( DBENTRYP_UL ) hb_dbfGoTo,
( DBENTRYP_I ) hb_dbfGoToId,
( DBENTRYP_V ) hb_dbfGoTop,
( DBENTRYP_BIB ) hb_dbfSeek,
( DBENTRYP_L ) hb_dbfSkip,
( DBENTRYP_L ) hb_dbfSkipFilter,
( DBENTRYP_L ) hb_dbfSkipRaw,
( DBENTRYP_VF ) hb_dbfAddField,
( DBENTRYP_B ) hb_dbfAppend,
( DBENTRYP_I ) hb_dbfCreateFields,
( DBENTRYP_V ) hb_dbfDeleteRec,
( DBENTRYP_BP ) hb_dbfDeleted,
( DBENTRYP_SP ) hb_dbfFieldCount,
( DBENTRYP_VF ) hb_dbfFieldDisplay,
( DBENTRYP_SSI ) hb_dbfFieldInfo,
( DBENTRYP_SVP ) hb_dbfFieldName,
( DBENTRYP_V ) hb_dbfFlush,
( DBENTRYP_PP ) hb_dbfGetRec,
( DBENTRYP_SI ) hb_dbfGetValue,
( DBENTRYP_SVL ) hb_dbfGetVarLen,
( DBENTRYP_V ) hb_dbfGoCold,
( DBENTRYP_V ) hb_dbfGoHot,
( DBENTRYP_P ) hb_dbfPutRec,
( DBENTRYP_SI ) hb_dbfPutValue,
( DBENTRYP_V ) hb_dbfRecall,
( DBENTRYP_ULP ) hb_dbfRecCount,
( DBENTRYP_ISI ) hb_dbfRecInfo,
( DBENTRYP_ULP ) hb_dbfRecNo,
( DBENTRYP_I ) hb_dbfRecId,
( DBENTRYP_S ) hb_dbfSetFieldExtent,
( DBENTRYP_P ) hb_dbfAlias,
( DBENTRYP_V ) hb_dbfClose,
( DBENTRYP_VP ) hb_dbfCreate,
( DBENTRYP_SI ) hb_dbfInfo,
( DBENTRYP_V ) hb_dbfNewArea,
( DBENTRYP_VP ) hb_dbfOpen,
( DBENTRYP_V ) hb_dbfRelease,
( DBENTRYP_SP ) hb_dbfStructSize,
( DBENTRYP_P ) hb_dbfSysName,
( DBENTRYP_VEI ) hb_dbfEval,
( DBENTRYP_V ) hb_dbfPack,
( DBENTRYP_LSP ) hb_dbfPackRec,
( DBENTRYP_VS ) hb_dbfSort,
( DBENTRYP_VT ) hb_dbfTrans,
( DBENTRYP_VT ) hb_dbfTransRec,
( DBENTRYP_V ) hb_dbfZap,
( DBENTRYP_VR ) hb_dbfChildEnd,
( DBENTRYP_VR ) hb_dbfChildStart,
( DBENTRYP_VR ) hb_dbfChildSync,
( DBENTRYP_V ) hb_dbfSyncChildren,
( DBENTRYP_V ) hb_dbfClearRel,
( DBENTRYP_V ) hb_dbfForceRel,
( DBENTRYP_SVP ) hb_dbfRelArea,
( DBENTRYP_VR ) hb_dbfRelEval,
( DBENTRYP_SI ) hb_dbfRelText,
( DBENTRYP_VR ) hb_dbfSetRel,
( DBENTRYP_OI ) hb_dbfOrderListAdd,
( DBENTRYP_V ) hb_dbfOrderListClear,
( DBENTRYP_OI ) hb_dbfOrderListDelete,
( DBENTRYP_OI ) hb_dbfOrderListFocus,
( DBENTRYP_V ) hb_dbfOrderListRebuild,
( DBENTRYP_VOI ) hb_dbfOrderCondition,
( DBENTRYP_VOC ) hb_dbfOrderCreate,
( DBENTRYP_OI ) hb_dbfOrderDestroy,
( DBENTRYP_OII ) hb_dbfOrderInfo,
( DBENTRYP_V ) hb_dbfClearFilter,
( DBENTRYP_V ) hb_dbfClearLocate,
( DBENTRYP_V ) hb_dbfClearScope,
( DBENTRYP_VPLP ) hb_dbfCountScope,
( DBENTRYP_I ) hb_dbfFilterText,
( DBENTRYP_SI ) hb_dbfScopeInfo,
( DBENTRYP_VFI ) hb_dbfSetFilter,
( DBENTRYP_VLO ) hb_dbfSetLocate,
( DBENTRYP_VOS ) hb_dbfSetScope,
( DBENTRYP_VPL ) hb_dbfSkipScope,
( DBENTRYP_B ) hb_dbfLocate,
( DBENTRYP_P ) hb_dbfCompile,
( DBENTRYP_I ) hb_dbfError,
( DBENTRYP_I ) hb_dbfEvalBlock,
( DBENTRYP_VSP ) hb_dbfRawLock,
( DBENTRYP_VL ) hb_dbfLock,
( DBENTRYP_I ) hb_dbfUnLock,
( DBENTRYP_V ) hb_dbfCloseMemFile,
( DBENTRYP_VP ) hb_dbfCreateMemFile,
( DBENTRYP_SVPB ) hb_dbfGetValueFile,
( DBENTRYP_VP ) hb_dbfOpenMemFile,
( DBENTRYP_SVPB ) hb_dbfPutValueFile,
( DBENTRYP_V ) hb_dbfReadDBHeader,
( DBENTRYP_V ) hb_dbfWriteDBHeader,
( DBENTRYP_R ) hb_dbfInit,
( DBENTRYP_R ) hb_dbfExit,
( DBENTRYP_RVVL ) hb_dbfDrop,
( DBENTRYP_RVVL ) hb_dbfExists,
( DBENTRYP_RSLV ) hb_dbfRddInfo,
( DBENTRYP_SVP ) hb_dbfWhoCares
};
/*
* Common functions.
*/
#define HB_BLANK_APPEND 1
#define HB_BLANK_EOF 2
#define HB_BLANK_ROLLBACK 3
#define HB_BLANK_SKIP 100
#define HB_BLANK_AUTOINC 101
static HB_LONG hb_dbfGetRowVer( DBFAREAP pArea, USHORT uiField, HB_LONG * pValue )
{
DBFFIELD dbField;
BOOL fLck = FALSE;
*pValue = 0;
if( pArea->fShared && !pArea->fFLocked && !pArea->fHeaderLocked )
{
if( SELF_RAWLOCK( ( AREAP ) pArea, HEADER_LOCK, 0 ) != HB_SUCCESS )
return HB_FAILURE;
fLck = TRUE;
}
if( hb_fileReadAt( pArea->pDataFile, ( BYTE * ) &dbField, sizeof( dbField ),
sizeof( DBFHEADER ) + uiField * sizeof( DBFFIELD ) ) ==
sizeof( dbField ) )
{
*pValue = HB_GET_LE_UINT64( &dbField.bReserved2 ) + 1;
HB_PUT_LE_UINT64( dbField.bReserved2, *pValue );
hb_fileWriteAt( pArea->pDataFile, ( BYTE * ) &dbField, sizeof( dbField ),
sizeof( DBFHEADER ) + uiField * sizeof( DBFFIELD ) );
}
if( fLck )
{
if( SELF_RAWLOCK( ( AREAP ) pArea, HEADER_UNLOCK, 0 ) != HB_SUCCESS )
return HB_FAILURE;
}
return HB_SUCCESS;
}
static HB_LONG hb_dbfGetNextValue( DBFAREAP pArea, USHORT uiField )
{
HB_LONG nValue = 0;
DBFFIELD dbField;
if( hb_fileReadAt( pArea->pDataFile, ( BYTE * ) &dbField, sizeof( dbField ),
sizeof( DBFHEADER ) + uiField * sizeof( DBFFIELD ) ) ==
sizeof( dbField ) )
{
nValue = HB_GET_LE_UINT32( dbField.bCounter );
HB_PUT_LE_UINT32( dbField.bCounter, nValue + dbField.bStep );
hb_fileWriteAt( pArea->pDataFile, ( BYTE * ) &dbField, sizeof( dbField ),
sizeof( DBFHEADER ) + uiField * sizeof( DBFFIELD ) );
}
return nValue;
}
static void hb_dbfUpdateStampFields( DBFAREAP pArea )
{
LONG lJulian = 0, lMilliSec = 0;
HB_LONG nRowVer = 0;
LPFIELD pField;
USHORT uiCount;
for( uiCount = 0, pField = pArea->lpFields; uiCount < pArea->uiFieldCount; uiCount++, pField++ )
{
switch( pField->uiType )
{
case HB_FT_MODTIME:
{
BYTE * pPtr = pArea->pRecord + pArea->pFieldOffset[ uiCount ];
if( lJulian == 0 )
hb_dateTimeStamp( &lJulian, &lMilliSec );
HB_PUT_LE_UINT32( pPtr, lJulian );
pPtr += 4;
HB_PUT_LE_UINT32( pPtr, lMilliSec );
break;
}
case HB_FT_ROWVER:
{
BYTE * pPtr = pArea->pRecord + pArea->pFieldOffset[ uiCount ];
if( nRowVer == 0 )
hb_dbfGetRowVer( pArea, uiCount, &nRowVer );
HB_PUT_LE_UINT64( pPtr, nRowVer );
break;
}
}
}
}
static void hb_dbfSetBlankRecord( DBFAREAP pArea, int iType )
{
BYTE *pPtr = pArea->pRecord, bFill = ' ', bNext;
ULONG ulSize = 1; /* 1 byte ' ' for DELETE flag */
USHORT uiCount;
LPFIELD pField;
for( uiCount = 0, pField = pArea->lpFields; uiCount < pArea->uiFieldCount; uiCount++, pField++ )
{
USHORT uiLen = pField->uiLen;
switch( pField->uiType )
{
case HB_FT_MEMO:
case HB_FT_IMAGE:
case HB_FT_BLOB:
case HB_FT_OLE:
bNext = uiLen == 10 ? ' ' : '\0';
break;
case HB_FT_DATE:
bNext = uiLen == 8 ? ' ' : '\0';
break;
case HB_FT_STRING:
case HB_FT_LOGICAL:
bNext = ' ';
break;
case HB_FT_LONG:
case HB_FT_FLOAT:
if( pField->uiFlags & HB_FF_AUTOINC )
{
if( iType == HB_BLANK_APPEND )
{
bNext = HB_BLANK_AUTOINC;
break;
}
else if( iType == HB_BLANK_ROLLBACK )
{
bNext = HB_BLANK_SKIP;
break;
}
}
bNext = ' ';
break;
case HB_FT_AUTOINC:
if( iType == HB_BLANK_APPEND )
bNext = HB_BLANK_AUTOINC;
else if( iType == HB_BLANK_ROLLBACK )
bNext = HB_BLANK_SKIP;
else
bNext = '\0';
break;
case HB_FT_INTEGER:
case HB_FT_DOUBLE:
if( pField->uiFlags & HB_FF_AUTOINC )
{
if( iType == HB_BLANK_APPEND )
{
bNext = HB_BLANK_AUTOINC;
break;
}
else if( iType == HB_BLANK_ROLLBACK )
{
bNext = HB_BLANK_SKIP;
break;
}
}
bNext = '\0';
break;
default:
bNext = '\0';
break;
}
if( bNext == bFill )
{
ulSize += uiLen;
}
else
{
memset( pPtr, bFill, ulSize );
pPtr += ulSize;
ulSize = 0;
if( bNext == HB_BLANK_SKIP )
{
pPtr += uiLen;
}
else if( bNext == HB_BLANK_AUTOINC )
{
HB_LONG nValue = hb_dbfGetNextValue( pArea, uiCount );
if( pField->uiDec )
nValue = ( HB_LONG ) hb_numDecConv( ( double ) nValue, - ( int ) pField->uiDec );
if( pField->uiType == HB_FT_INTEGER ||
pField->uiType == HB_FT_AUTOINC )
{
if( uiLen == 1 )
*pPtr = ( signed char ) nValue;
else if( uiLen == 2 )
HB_PUT_LE_UINT16( pPtr, nValue );
else if( uiLen == 3 )
HB_PUT_LE_UINT24( pPtr, nValue );
else if( uiLen == 4 )
HB_PUT_LE_UINT32( pPtr, nValue );
else if( uiLen == 8 )
HB_PUT_LE_UINT64( pPtr, nValue );
}
else if( pField->uiType == HB_FT_DOUBLE )
{
HB_PUT_LE_DOUBLE( pPtr, nValue );
}
else
{
USHORT ui = uiLen;
do
{
pPtr[ --ui ] = ( BYTE ) nValue % 10 + '0';
nValue /= 10;
}
while( ui && nValue >= 1 );
}
pPtr += uiLen;
}
else
{
ulSize = uiLen;
bFill = bNext;
}
}
}
memset( pPtr, bFill, ulSize );
ulSize = pArea->pRecord - pPtr - ulSize;
if( ulSize < ( ULONG ) pArea->uiRecordLen )
memset( pPtr, '\0', ( ULONG ) pArea->uiRecordLen - ulSize );
}
/*
* Executes user trigger function
*/
static BOOL hb_dbfTriggerDo( DBFAREAP pArea, int iEvent,
int iField, PHB_ITEM pItem )
{
BOOL fResult = TRUE;
HB_TRACE(HB_TR_DEBUG, ("hb_dbfTriggerDo(%p,%d,%d,%p)", pArea, iEvent, iField, pItem));
if( hb_vmRequestQuery() == 0 )
{
if( hb_vmRequestReenter() )
{
hb_vmPushDynSym( pArea->pTriggerSym );
hb_vmPushNil();
/* nEvent */
hb_vmPushInteger( iEvent );
/* nArea */
hb_vmPushInteger( pArea->uiArea );
/* nFieldPos (GET/PUT) */
hb_vmPushInteger( iField );
/* xTrigVal (PREUSE/GET/PUT) */
if( pItem )
{
#ifdef HB_TRIGVAR_BYREF
hb_vmPushItemRef( pItem );
#else
hb_vmPush( pItem );
#endif
hb_vmDo( 4 );
}
else
{
/* SIx3 makes: hb_vmPushInteger( 0 ); */
hb_vmDo( 3 );
}
fResult = hb_parl( -1 );
hb_vmRequestRestore();
}
}
return fResult;
}
/*
* Set user trigger function
*/
static void hb_dbfTriggerSet( DBFAREAP pArea, PHB_ITEM pTrigger )
{
char * szName;
HB_TRACE(HB_TR_DEBUG, ("hb_dbfTriggerSet(%p,%p)", pArea, pTrigger));
szName = hb_itemGetCPtr( pTrigger );
pArea->pTriggerSym = *szName ? hb_dynsymFindName( szName ) : NULL;
if( pArea->pTriggerSym && !hb_dynsymIsFunction( pArea->pTriggerSym ) )
pArea->pTriggerSym = NULL;
pArea->fTrigger = pArea->pTriggerSym != NULL;
}
/*
* Return the total number of records.
*/
static ULONG hb_dbfCalcRecCount( DBFAREAP pArea )
{
HB_TRACE(HB_TR_DEBUG, ("hb_dbfCalcRecCount(%p)", pArea));
if( ! pArea->pDataFile )
return 0;
else
return ( ULONG ) ( ( hb_fileSize( pArea->pDataFile ) -
pArea->uiHeaderLen ) / pArea->uiRecordLen );
}
/*
* Read current record from file.
*/
static BOOL hb_dbfReadRecord( DBFAREAP pArea )
{
HB_TRACE(HB_TR_DEBUG, ("hb_dbfReadRecord(%p)", pArea));
if( !pArea->fPositioned )
{
pArea->fValidBuffer = TRUE;
return TRUE;
}
if( pArea->ulRecNo > pArea->ulRecCount )
{
/* Update record count */
if( pArea->fShared )
pArea->ulRecCount = hb_dbfCalcRecCount( pArea );
if( pArea->ulRecNo > pArea->ulRecCount )
{
pArea->fEof = pArea->fValidBuffer = TRUE;
return TRUE;
}
}
/* Read data from file */
if( hb_fileReadAt( pArea->pDataFile, pArea->pRecord, pArea->uiRecordLen,
( HB_FOFFSET ) pArea->uiHeaderLen +
( HB_FOFFSET ) ( pArea->ulRecNo - 1 ) *
( HB_FOFFSET ) pArea->uiRecordLen ) !=
( ULONG ) pArea->uiRecordLen )
{
PHB_ITEM pError = hb_errNew();
hb_errPutGenCode( pError, EG_READ );
hb_errPutDescription( pError, hb_langDGetErrorDesc( EG_READ ) );
hb_errPutSubCode( pError, EDBF_READ );
hb_errPutOsCode( pError, hb_fsError() );
hb_errPutFileName( pError, pArea->szDataFileName );
SELF_ERROR( ( AREAP ) pArea, pError );
hb_itemRelease( pError );
return FALSE;
}
if( SELF_GETREC( ( AREAP ) pArea, NULL ) == HB_FAILURE )
return FALSE;
/* Set flags */
pArea->fValidBuffer = pArea->fPositioned = TRUE;
pArea->fDeleted = pArea->pRecord[ 0 ] == '*';
return TRUE;
}
/*
* Write current record to file.
*/
static BOOL hb_dbfWriteRecord( DBFAREAP pArea )
{
HB_TRACE(HB_TR_DEBUG, ("hb_dbfWriteRecord(%p)", pArea));
if( SELF_PUTREC( ( AREAP ) pArea, NULL ) == HB_FAILURE )
return FALSE;
pArea->fRecordChanged = FALSE;
pArea->fDataFlush = TRUE;
return TRUE;
}
/*
* Set encryption password
*/
static BOOL hb_dbfPasswordSet( DBFAREAP pArea, PHB_ITEM pPasswd, BOOL fRaw )
{
BYTE byBuffer[ 8 ];
ULONG ulLen;
BOOL fKeySet = FALSE, fSet;
HB_TRACE(HB_TR_DEBUG, ("hb_dbfPasswordSet(%p,%p,%d)", pArea, pPasswd, fRaw));
ulLen = hb_itemGetCLen( pPasswd );
fSet = !pArea->fHasMemo && HB_IS_STRING( pPasswd ) && (!fRaw || ulLen == 8);
if( fSet )
{
ulLen = hb_itemGetCLen( pPasswd );
if( ulLen > 0 )
{
if( ulLen < 8 )
{
memcpy( byBuffer, hb_itemGetCPtr( pPasswd ), ulLen );
memset( byBuffer + ulLen, '\0', 8 - ulLen );
}
else
memcpy( byBuffer, hb_itemGetCPtr( pPasswd ), 8 );
}
}
if( pArea->pCryptKey )
hb_itemPutCL( pPasswd, ( char * ) pArea->pCryptKey, 8 );
else
hb_itemClear( pPasswd );
if( fSet )
{
if( pArea->pRecord && pArea->fPositioned )
{
SELF_GOCOLD( ( AREAP ) pArea );
pArea->fValidBuffer = FALSE;
}
if( pArea->pCryptKey )
{
/* clean the memory with password key - though it's not
* a serious actions in such case ;-)
*/
memset( pArea->pCryptKey, '\0', 8 );
hb_xfree( pArea->pCryptKey );
pArea->pCryptKey = NULL;
}
if( ulLen > 0 )
{
/* at this moment only one encryption method is used,
I'll add other later, [druzus] */
pArea->bCryptType = DB_CRYPT_SIX;
pArea->pCryptKey = ( BYTE * ) hb_xgrab( 8 );
/* SIX encode the key with its own value before use */
if( !fRaw )
hb_sxEnCrypt( byBuffer, pArea->pCryptKey, byBuffer, 8 );
else
memcpy( pArea->pCryptKey, byBuffer, 8 );
fKeySet = TRUE;
}
}
return fKeySet;
}
/*
* Encrypt/Decrypt table
*/
static void hb_dbfTableCrypt( DBFAREAP pArea, PHB_ITEM pPasswd, BOOL fEncrypt )
{
HB_TRACE(HB_TR_DEBUG, ("hb_dbfTableCrypt(%p,%p,%d)", pArea, pPasswd, fEncrypt));
if( !pArea->fReadonly && !pArea->fShared &&
fEncrypt ? !pArea->fTableEncrypted && !pArea->fHasMemo :
pArea->fTableEncrypted )
{
ULONG ulRecords, ulRecNo;
if( SELF_RECCOUNT( ( AREAP ) pArea, &ulRecords ) == HB_SUCCESS )
{
HB_ERRCODE errCode = HB_SUCCESS;
BYTE * pOldCryptKey, * pNewCryptKey;
pOldCryptKey = pArea->pCryptKey;
pArea->pCryptKey = NULL;
hb_dbfPasswordSet( pArea, pPasswd, FALSE );
pNewCryptKey = pArea->pCryptKey;
if( !fEncrypt && pNewCryptKey )
{
if( pOldCryptKey )
hb_xfree( pNewCryptKey );
else
pOldCryptKey = pNewCryptKey;
pNewCryptKey = NULL;
}
for( ulRecNo = 1; ulRecNo <= ulRecords; ++ulRecNo )
{
pArea->pCryptKey = pOldCryptKey;
errCode = SELF_GOTO( ( AREAP ) pArea, ulRecNo );
if( errCode != HB_SUCCESS )
break;
if( !hb_dbfReadRecord( pArea ) )
{
errCode = HB_FAILURE;
break;
}
pArea->pCryptKey = pNewCryptKey;
/* Buffer is hot? */
if( !pArea->fRecordChanged )
{
errCode = SELF_GOHOT( ( AREAP ) pArea );
if( errCode != HB_SUCCESS )
break;
}
/* Force record encryption/decryption */
pArea->fEncrypted = fEncrypt;
/* Save encrypted record */
errCode = SELF_GOCOLD( ( AREAP ) pArea );
if( errCode != HB_SUCCESS )
break;
}
pArea->pCryptKey = pNewCryptKey;
if( pOldCryptKey )
hb_xfree( pOldCryptKey );
if( errCode == HB_SUCCESS )
{
pArea->fTableEncrypted = fEncrypt;
pArea->fUpdateHeader = TRUE;
SELF_WRITEDBHEADER( ( AREAP ) pArea );
}
}
}
}
/*
* Unlock all records.
*/
static HB_ERRCODE hb_dbfUnlockAllRecords( DBFAREAP pArea )
{
HB_ERRCODE uiError = HB_SUCCESS;
HB_TRACE(HB_TR_DEBUG, ("hb_dbfUnlockAllRecords(%p)", pArea ));
if( pArea->pLocksPos )
{
ULONG ulCount;
uiError = SELF_GOCOLD( ( AREAP ) pArea );
for( ulCount = 0; ulCount < pArea->ulNumLocksPos; ulCount++ )
SELF_RAWLOCK( ( AREAP ) pArea, REC_UNLOCK, pArea->pLocksPos[ ulCount ] );
hb_xfree( pArea->pLocksPos );
pArea->pLocksPos = NULL;
}
pArea->ulNumLocksPos = 0;
return uiError;
}
/*
* Unlock a records.
*/
static HB_ERRCODE hb_dbfUnlockRecord( DBFAREAP pArea, ULONG ulRecNo )
{
HB_ERRCODE uiError = HB_SUCCESS;
ULONG ulCount, * pList;
HB_TRACE(HB_TR_DEBUG, ("hb_dbfUnlockRecord(%p, %lu)", pArea, ulRecNo));
/* Search the locked record */
for( ulCount = 0; ulCount < pArea->ulNumLocksPos &&
pArea->pLocksPos[ ulCount ] != ulRecNo; ulCount++ ) {}
if( ulCount < pArea->ulNumLocksPos )
{
uiError = SELF_GOCOLD( ( AREAP ) pArea );
SELF_RAWLOCK( ( AREAP ) pArea, REC_UNLOCK, ulRecNo );
if( pArea->ulNumLocksPos == 1 ) /* Delete the list */
{
hb_xfree( pArea->pLocksPos );
pArea->pLocksPos = NULL;
pArea->ulNumLocksPos = 0;
}
else /* Resize the list */
{
pList = pArea->pLocksPos + ulCount;
memmove( pList, pList + 1, ( pArea->ulNumLocksPos - ulCount - 1 ) *
sizeof( ULONG ) );
pArea->pLocksPos = ( ULONG * ) hb_xrealloc( pArea->pLocksPos,
( pArea->ulNumLocksPos - 1 ) *
sizeof( ULONG ) );
pArea->ulNumLocksPos --;
}
}
return uiError;
}
/*
* Lock a record.
*/
static HB_ERRCODE hb_dbfLockRecord( DBFAREAP pArea, ULONG ulRecNo, BOOL * pResult,
BOOL bExclusive )
{
HB_TRACE(HB_TR_DEBUG, ("hb_dbfLockRecord(%p, %lu, %p, %i)", pArea, ulRecNo,
pResult, (int) bExclusive));
if( pArea->lpdbPendingRel )
{
if( SELF_FORCEREL( ( AREAP ) pArea ) != HB_SUCCESS )
return HB_FAILURE;
}
if( pArea->fFLocked )
{
* pResult = TRUE;
return HB_SUCCESS;
}
if( ulRecNo == 0 )
ulRecNo = pArea->ulRecNo;
if( bExclusive )
{
hb_dbfUnlockAllRecords( pArea );
}
else if( pArea->ulNumLocksPos > 0 )
{
ULONG ul;
for( ul = 0; ul < pArea->ulNumLocksPos; ul++ )
{
if( pArea->pLocksPos[ ul ] == ulRecNo )
{
* pResult = TRUE;
return HB_SUCCESS;
}
}
}
if( SELF_RAWLOCK( ( AREAP ) pArea, REC_LOCK, ulRecNo ) == HB_SUCCESS )
{
if( pArea->ulNumLocksPos == 0 ) /* Create the list */
{
pArea->pLocksPos = ( ULONG * ) hb_xgrab( sizeof( ULONG ) );
}
else /* Resize the list */
{
pArea->pLocksPos = ( ULONG * ) hb_xrealloc( pArea->pLocksPos,
( pArea->ulNumLocksPos + 1 ) *
sizeof( ULONG ) );
}
pArea->pLocksPos[ pArea->ulNumLocksPos++ ] = ulRecNo;
* pResult = TRUE;
if( ulRecNo == pArea->ulRecNo )
{
if( !pArea->fPositioned )
{
if( SELF_GOTO( ( AREAP ) pArea, pArea->ulRecNo ) != HB_SUCCESS )
return HB_FAILURE;
}
else if( !pArea->fRecordChanged )
{
if( SELF_GOCOLD( ( AREAP ) pArea ) != HB_SUCCESS )
return HB_FAILURE;
pArea->fValidBuffer = FALSE;
}
}
}
else
* pResult = FALSE;
return HB_SUCCESS;
}
/*
* Lock a file.
*/
static HB_ERRCODE hb_dbfLockFile( DBFAREAP pArea, BOOL * pResult )
{
HB_TRACE(HB_TR_DEBUG, ("hb_dbfLockFile(%p, %p)", pArea, pResult));
if( !pArea->fFLocked )
{
if( pArea->lpdbPendingRel )
{
if( SELF_FORCEREL( ( AREAP ) pArea ) != HB_SUCCESS )
return HB_FAILURE;
}
hb_dbfUnlockAllRecords( pArea );
SELF_RAWLOCK( ( AREAP ) pArea, FILE_LOCK, 0 );
* pResult = pArea->fFLocked;
if( !pArea->fPositioned )
{
SELF_GOTO( ( AREAP ) pArea, pArea->ulRecNo );
}
else if( !pArea->fRecordChanged )
{
SELF_GOCOLD( ( AREAP ) pArea );
pArea->fValidBuffer = FALSE;
}
}
else
* pResult = TRUE;
return HB_SUCCESS;
}
/*
* Unlock a file.
*/
static HB_ERRCODE hb_dbfUnlockFile( DBFAREAP pArea )
{
HB_ERRCODE uiError = HB_SUCCESS;
HB_TRACE(HB_TR_DEBUG, ("hb_dbfUnlockFile(%p)", pArea));
if( pArea->fFLocked )
{
uiError = SELF_GOCOLD( ( AREAP ) pArea );
SELF_RAWLOCK( ( AREAP ) pArea, FILE_UNLOCK, 0 );
}
return uiError;
}
/*
* Test if a record is locked.
*/
static BOOL hb_dbfIsLocked( DBFAREAP pArea, ULONG ulRecNo )
{
ULONG ulCount;
HB_TRACE(HB_TR_DEBUG, ("hb_dbfIsLocked(%p)", pArea));
ulCount = pArea->ulNumLocksPos;
while( ulCount > 0 )
{
if( pArea->pLocksPos[ ulCount - 1 ] == ulRecNo )
return TRUE;
ulCount --;
}
return FALSE;
}
/*
* Return an array filled all locked records.
*/
static void hb_dbfGetLockArray( DBFAREAP pArea, PHB_ITEM pItem )
{
ULONG ulCount;
HB_TRACE(HB_TR_DEBUG, ("hb_dbfGetLockArray(%p, %p)", pArea, pItem));
hb_arrayNew( pItem, pArea->ulNumLocksPos );
for( ulCount = 0; ulCount < pArea->ulNumLocksPos; ulCount++ )
{
hb_arraySetNL( pItem, ulCount + 1, pArea->pLocksPos[ ulCount ] );
}
}
/*
* Converts EDBF_* error code into EG_* one.
* This function is common for different DBF based RDD implementation
* so I don't make it static
*/
HB_ERRCODE hb_dbfGetEGcode( HB_ERRCODE errCode )
{
HB_ERRCODE errEGcode;
HB_TRACE(HB_TR_DEBUG, ("hb_dbfGetEGcode(%hu)", errCode));
switch( errCode )
{
case EDBF_OPEN_DBF:
errEGcode = EG_OPEN;
break;
case EDBF_CREATE_DBF:
errEGcode = EG_CREATE;
break;
case EDBF_READ:
errEGcode = EG_READ;
break;
case EDBF_WRITE:
errEGcode = EG_WRITE;
break;
case EDBF_CORRUPT:
errEGcode = EG_CORRUPTION;
break;
case EDBF_DATATYPE:
errEGcode = EG_DATATYPE;
break;
case EDBF_DATAWIDTH:
errEGcode = EG_DATAWIDTH;
break;
case EDBF_UNLOCKED:
errEGcode = EG_UNLOCKED;
break;
case EDBF_SHARED:
errEGcode = EG_SHARED;
break;
case EDBF_APPENDLOCK:
errEGcode = EG_APPENDLOCK;
break;
case EDBF_READONLY:
errEGcode = EG_READONLY;
break;
case EDBF_LOCK:
errEGcode = EG_LOCK;
break;
case EDBF_INVALIDKEY:
default:
errEGcode = EG_UNSUPPORTED;
break;
}
return errEGcode;
}
/*
* Converts memo block offset into ASCII.
* This function is common for different MEMO implementation
* so I left it in DBF.
*/
ULONG hb_dbfGetMemoBlock( DBFAREAP pArea, USHORT uiIndex )
{
ULONG ulBlock= 0;
HB_TRACE(HB_TR_DEBUG, ("hb_dbfGetMemoBlock(%p, %hu)", pArea, uiIndex));
if( pArea->lpFields[ uiIndex ].uiLen == 4 )
{
ulBlock = HB_GET_LE_UINT32( &pArea->pRecord[ pArea->pFieldOffset[ uiIndex ] ] );
}
else
{
USHORT uiCount;
BYTE bByte;
for( uiCount = 0; uiCount < 10; uiCount++ )
{
bByte = pArea->pRecord[ pArea->pFieldOffset[ uiIndex ] + uiCount ];
if( bByte >= '0' && bByte <= '9' )
{
ulBlock = ulBlock * 10 + ( bByte - '0' );
}
}
}
return ulBlock;
}
/*
* Converts ASCII data into memo block offset.
* This function is common for different MEMO implementation
* so I left it in DBF.
*/
void hb_dbfPutMemoBlock( DBFAREAP pArea, USHORT uiIndex, ULONG ulBlock )
{
HB_TRACE(HB_TR_DEBUG, ("hb_dbfPutMemoBlock(%p, %hu, %lu)", pArea, uiIndex, ulBlock));
if( pArea->lpFields[ uiIndex ].uiLen == 4 )
{
HB_PUT_LE_UINT32( &pArea->pRecord[ pArea->pFieldOffset[ uiIndex ] ], ulBlock );
}
else
{
SHORT iCount;
for( iCount = 9; iCount >= 0; iCount-- )
{
if( ulBlock > 0 )
{
pArea->pRecord[ pArea->pFieldOffset[ uiIndex ] + iCount ] = ( BYTE )( ulBlock % 10 ) + '0';
ulBlock /= 10;
}
else
{
pArea->pRecord[ pArea->pFieldOffset[ uiIndex ] + iCount ] = ' ';
}
}
}
}
/*
* Retrive memo field information stored in DBF file
* This function is common for different MEMO implementation
* so I left it in DBF.
*/
HB_ERRCODE hb_dbfGetMemoData( DBFAREAP pArea, USHORT uiIndex,
ULONG * pulBlock, ULONG * pulSize,
ULONG * pulType )
{
HB_TRACE(HB_TR_DEBUG, ("hb_dbfGetMemoData(%p, %hu, %p, %p, %p)", pArea, uiIndex, pulBlock, pulSize, pulType));
*pulBlock = *pulSize = *pulType = 0;
if( uiIndex >= pArea->uiFieldCount ||
( pArea->lpFields[ uiIndex ].uiType != HB_FT_MEMO &&
pArea->lpFields[ uiIndex ].uiType != HB_FT_IMAGE &&
pArea->lpFields[ uiIndex ].uiType != HB_FT_BLOB &&
pArea->lpFields[ uiIndex ].uiType != HB_FT_OLE ) )
return HB_FAILURE;
if( pArea->lpFields[ uiIndex ].uiLen == 4 )
{
*pulBlock = HB_GET_LE_UINT32( &pArea->pRecord[ pArea->pFieldOffset[ uiIndex ] ] );
return HB_SUCCESS;
}
else if( pArea->lpFields[ uiIndex ].uiLen == 10 )
{
ULONG ulValue;
if( pArea->bMemoType == DB_MEMO_SMT )
{
LPSMTFIELD pSMTFiled = ( LPSMTFIELD ) &pArea->pRecord[ pArea->pFieldOffset[ uiIndex ] ];
ulValue = HB_GET_LE_UINT16( pSMTFiled->type );
if( ulValue != 0x2020 )
{
*pulType = ulValue;
*pulSize = HB_GET_LE_UINT32( pSMTFiled->length );
*pulBlock = HB_GET_LE_UINT32( pSMTFiled->block );
}
}
/*
* check for NULL fields created by Access, they have chr(0) set
* in the whole memo block address, [druzus]
*/
else if( pArea->pRecord[ pArea->pFieldOffset[ uiIndex ] ] != 0 )
{
USHORT uiCount;
BYTE bByte;
ulValue = 0;
for( uiCount = 0; uiCount < 10; uiCount++ )
{
bByte = pArea->pRecord[ pArea->pFieldOffset[ uiIndex ] + uiCount ];
if( bByte >= '0' && bByte <= '9' )
ulValue = ulValue * 10 + ( bByte - '0' );
else if( bByte != ' ' || ulValue )
{
PHB_ITEM pError = hb_errNew();
HB_ERRCODE uiError;
hb_errPutGenCode( pError, EG_CORRUPTION );
hb_errPutSubCode( pError, EDBF_CORRUPT );
hb_errPutDescription( pError, hb_langDGetErrorDesc( EG_CORRUPTION ) );
hb_errPutFileName( pError, pArea->szDataFileName );
hb_errPutFlags( pError, EF_CANDEFAULT );
uiError = SELF_ERROR( ( AREAP ) pArea, pError );
hb_itemRelease( pError );
return uiError == E_DEFAULT ? HB_SUCCESS : HB_FAILURE;
}
}
*pulBlock = ulValue;
}
return HB_SUCCESS;
}
return HB_FAILURE;
}
/*
* Write memo data information into memo field in DBF file
* This function is common for different MEMO implementation
* so I left it in DBF.
*/
HB_ERRCODE hb_dbfSetMemoData( DBFAREAP pArea, USHORT uiIndex,
ULONG ulBlock, ULONG ulSize, ULONG ulType )
{
HB_TRACE(HB_TR_DEBUG, ("hb_dbfSetMemoData(%p, %hu, %lu, %lu, %lu)", pArea, uiIndex, ulBlock, ulSize, ulType));
if( uiIndex >= pArea->uiFieldCount ||
( pArea->lpFields[ uiIndex ].uiType != HB_FT_MEMO &&
pArea->lpFields[ uiIndex ].uiType != HB_FT_IMAGE &&
pArea->lpFields[ uiIndex ].uiType != HB_FT_BLOB &&
pArea->lpFields[ uiIndex ].uiType != HB_FT_OLE ) )
return HB_FAILURE;
if( pArea->lpFields[ uiIndex ].uiLen == 4 )
{
HB_PUT_LE_UINT32( &pArea->pRecord[ pArea->pFieldOffset[ uiIndex ] ], ulBlock );
return HB_SUCCESS;
}
else if( pArea->lpFields[ uiIndex ].uiLen == 10 )
{
if( pArea->bMemoType == DB_MEMO_SMT )
{
LPSMTFIELD pSMTFiled = ( LPSMTFIELD ) &pArea->pRecord[ pArea->pFieldOffset[ uiIndex ] ];
HB_PUT_LE_UINT16( pSMTFiled->type, ulType );
HB_PUT_LE_UINT32( pSMTFiled->length, ulSize );
HB_PUT_LE_UINT32( pSMTFiled->block, ulBlock );
}
else
{
SHORT iCount;
for( iCount = 9; iCount >= 0; iCount-- )
{
if( ulBlock > 0 )
{
pArea->pRecord[ pArea->pFieldOffset[ uiIndex ] + iCount ] = ( BYTE )( ulBlock % 10 ) + '0';
ulBlock /= 10;
}
else
{
pArea->pRecord[ pArea->pFieldOffset[ uiIndex ] + iCount ] = ' ';
}
}
}
return HB_SUCCESS;
}
return HB_FAILURE;
}
/*
* Get information about locking schemes for additional files (MEMO, INDEX)
* This function is common for different MEMO implementation
* so I left it in DBF.
*/
BOOL hb_dbfLockIdxGetData( BYTE bScheme, HB_FOFFSET *ulPos, HB_FOFFSET *ulPool )
{
switch( bScheme )
{
case DB_DBFLOCK_CLIP:
*ulPos = IDX_LOCKPOS_CLIP;
*ulPool = IDX_LOCKPOOL_CLIP;
break;
case DB_DBFLOCK_CL53:
*ulPos = IDX_LOCKPOS_CL53;
*ulPool = IDX_LOCKPOOL_CL53;
break;
case DB_DBFLOCK_CL53EXT:
*ulPos = IDX_LOCKPOS_CL53EXT;
*ulPool = IDX_LOCKPOOL_CL53EXT;
break;
case DB_DBFLOCK_VFP:
*ulPos = IDX_LOCKPOS_VFP;
*ulPool = IDX_LOCKPOOL_VFP;
break;
#ifndef HB_LONG_LONG_OFF
case DB_DBFLOCK_XHB64:
*ulPos = IDX_LOCKPOS_XHB64;
*ulPool = IDX_LOCKPOOL_XHB64;
break;
#endif
default:
return FALSE;
}
return TRUE;
}
/*
* Set lock using current locking schemes in additional files (MEMO, INDEX)
* This function is common for different MEMO implementation
* so I left it in DBF.
*/
BOOL hb_dbfLockIdxFile( PHB_FILE pFile, BYTE bScheme, USHORT usMode, HB_FOFFSET *pPoolPos )
{
HB_FOFFSET ulPos, ulPool, ulSize = 1;
BOOL fRet = FALSE;
if( !hb_dbfLockIdxGetData( bScheme, &ulPos, &ulPool ) )
{
return fRet;
}
for( ;; )
{
switch( usMode & FL_MASK )
{
case FL_LOCK:
if( ulPool )
{
if( ( usMode & FLX_SHARED ) != 0 )
*pPoolPos = ( HB_FOFFSET ) ( hb_random_num() * ulPool ) + 1;
else
{
*pPoolPos = 0;
ulSize = ulPool + 1;
}
}
else
{
*pPoolPos = 0;
}
break;
case FL_UNLOCK:
if( ulPool )
{
if( ! *pPoolPos )
ulSize = ulPool + 1;
}
else
{
*pPoolPos = 0;
}
break;
default:
return FALSE;
}
fRet = hb_fileLock( pFile, ulPos + *pPoolPos, ulSize, usMode );
if( fRet || ( usMode & FLX_WAIT ) == 0 || ( usMode & FL_MASK ) != FL_LOCK )
break;
/* TODO: call special error handler (LOCKHANDLER) here if fWait */
hb_releaseCPU();
}
return fRet;
}
/*
* Get DBF locking parameters
*/
static HB_ERRCODE hb_dbfLockData( DBFAREAP pArea,
HB_FOFFSET * ulPos, HB_FOFFSET * ulFlSize,
HB_FOFFSET * ulRlSize, int * iDir )
{
switch( pArea->bLockType )
{
case DB_DBFLOCK_CLIP:
*ulPos = DBF_LOCKPOS_CLIP;
*iDir = DBF_LOCKDIR_CLIP;
*ulFlSize = DBF_FLCKSIZE_CLIP;
*ulRlSize = DBF_RLCKSIZE_CLIP;
break;
case DB_DBFLOCK_CL53:
*ulPos = DBF_LOCKPOS_CL53;
*iDir = DBF_LOCKDIR_CL53;
*ulFlSize = DBF_FLCKSIZE_CL53;
*ulRlSize = DBF_RLCKSIZE_CL53;
break;
case DB_DBFLOCK_CL53EXT:
*ulPos = DBF_LOCKPOS_CL53EXT;
*iDir = DBF_LOCKDIR_CL53EXT;
*ulFlSize = DBF_FLCKSIZE_CL53EXT;
*ulRlSize = DBF_RLCKSIZE_CL53EXT;
break;
case DB_DBFLOCK_VFP:
if( pArea->fHasTags )
{
*ulPos = DBF_LOCKPOS_VFPX;
*iDir = DBF_LOCKDIR_VFPX;
*ulFlSize = DBF_FLCKSIZE_VFPX;
*ulRlSize = DBF_RLCKSIZE_VFPX;
}
else
{
*ulPos = DBF_LOCKPOS_VFP;
*iDir = DBF_LOCKDIR_VFP;
*ulFlSize = DBF_FLCKSIZE_VFP;
*ulRlSize = DBF_RLCKSIZE_VFP;
}
break;
#ifndef HB_LONG_LONG_OFF
case DB_DBFLOCK_XHB64:
*ulPos = DBF_LOCKPOS_XHB64;
*iDir = DBF_LOCKDIR_XHB64;
*ulFlSize = DBF_FLCKSIZE_XHB64;
*ulRlSize = DBF_RLCKSIZE_XHB64;
break;
#endif
default:
*ulPos = *ulFlSize = *ulRlSize = 0;
*iDir = 0;
return HB_FAILURE;
}
return HB_SUCCESS;
}
/*
* -- DBF METHODS --
*/
/*
* Determine logical beginning of file.
*/
static HB_ERRCODE hb_dbfBof( DBFAREAP pArea, BOOL * pBof )
{
HB_TRACE(HB_TR_DEBUG, ("hb_dbfBof(%p, %p)", pArea, pBof));
if( pArea->lpdbPendingRel )
{
if( SELF_FORCEREL( ( AREAP ) pArea ) != HB_SUCCESS )
return HB_FAILURE;
}
* pBof = pArea->fBof;
return HB_SUCCESS;
}
/*
* Determine logical end of file.
*/
static HB_ERRCODE hb_dbfEof( DBFAREAP pArea, BOOL * pEof )
{
HB_TRACE(HB_TR_DEBUG, ("hb_dbfEof(%p, %p)", pArea, pEof));
if( pArea->lpdbPendingRel )
{
if( SELF_FORCEREL( ( AREAP ) pArea ) != HB_SUCCESS )
return HB_FAILURE;
}
* pEof = pArea->fEof;
return HB_SUCCESS;
}
/*
* Determine outcome of the last search operation.
*/
static HB_ERRCODE hb_dbfFound( DBFAREAP pArea, BOOL * pFound )
{
HB_TRACE(HB_TR_DEBUG, ("hb_dbfFound(%p, %p)", pArea, pFound));
if( pArea->lpdbPendingRel )
{
if( SELF_FORCEREL( ( AREAP ) pArea ) != HB_SUCCESS )
return HB_FAILURE;
}
* pFound = pArea->fFound;
return HB_SUCCESS;
}
/*
* Position cursor at the last record.
*/
static HB_ERRCODE hb_dbfGoBottom( DBFAREAP pArea )
{
HB_TRACE(HB_TR_DEBUG, ("hb_dbfGoBottom(%p)", pArea));
if( SELF_GOCOLD( ( AREAP ) pArea ) == HB_FAILURE )
return HB_FAILURE;
/* Update record count */
if( pArea->fShared )
pArea->ulRecCount = hb_dbfCalcRecCount( pArea );
pArea->fTop = FALSE;
pArea->fBottom = TRUE;
if( SELF_GOTO( ( AREAP ) pArea, pArea->ulRecCount ) != HB_SUCCESS )
return HB_FAILURE;
return SELF_SKIPFILTER( ( AREAP ) pArea, -1 );
}
/*
* Position cursor at a specific physical record.
*/
static HB_ERRCODE hb_dbfGoTo( DBFAREAP pArea, ULONG ulRecNo )
{
HB_TRACE(HB_TR_DEBUG, ("hb_dbfGoTo(%p, %lu)", pArea, ulRecNo));
if( SELF_GOCOLD( ( AREAP ) pArea ) == HB_FAILURE )
return HB_FAILURE;
if( pArea->lpdbPendingRel )
{
if( pArea->lpdbPendingRel->isScoped )
{
if( SELF_FORCEREL( ( AREAP ) pArea ) != HB_SUCCESS )
return HB_FAILURE;
}
else /* Reset parent rel struct */
pArea->lpdbPendingRel = NULL;
}
/* Update record count */
if( ulRecNo > pArea->ulRecCount && pArea->fShared )
pArea->ulRecCount = hb_dbfCalcRecCount( pArea );
if( ulRecNo <= pArea->ulRecCount && ulRecNo >= 1 )
{
pArea->ulRecNo = ulRecNo;
pArea->fBof = pArea->fEof = pArea->fValidBuffer = FALSE;
pArea->fPositioned = TRUE;
}
else /* Out of space */
{
pArea->ulRecNo = pArea->ulRecCount + 1;
pArea->fBof = pArea->fEof = pArea->fValidBuffer = TRUE;
pArea->fPositioned = pArea->fDeleted = pArea->fEncrypted = FALSE;
/* Clear record buffer */
hb_dbfSetBlankRecord( pArea, HB_BLANK_EOF );
}
pArea->fFound = FALSE;
/* Force relational movement in child WorkAreas */
if( pArea->lpdbRelations )
return SELF_SYNCCHILDREN( ( AREAP ) pArea );
else
return HB_SUCCESS;
}
/*
* Position the cursor to a specific, physical identity.
*/
static HB_ERRCODE hb_dbfGoToId( DBFAREAP pArea, PHB_ITEM pItem )
{
PHB_ITEM pError;
HB_TRACE(HB_TR_DEBUG, ("hb_dbfGoToId(%p, %p)", pArea, pItem));
if( HB_IS_NUMERIC( pItem ) )
return SELF_GOTO( ( AREAP ) pArea, hb_itemGetNL( pItem ) );
else
{
pError = hb_errNew();
hb_errPutGenCode( pError, EG_DATATYPE );
hb_errPutDescription( pError, hb_langDGetErrorDesc( EG_DATATYPE ) );
hb_errPutSubCode( pError, EDBF_DATATYPE );
SELF_ERROR( ( AREAP ) pArea, pError );
hb_itemRelease( pError );
return HB_FAILURE;
}
}
/*
* Position cursor at the first record.
*/
static HB_ERRCODE hb_dbfGoTop( DBFAREAP pArea )
{
HB_TRACE(HB_TR_DEBUG, ("hb_dbfGoTop(%p)", pArea));
pArea->fTop = TRUE;
pArea->fBottom = FALSE;
if( SELF_GOTO( ( AREAP ) pArea, 1 ) == HB_FAILURE )
return HB_FAILURE;
return SELF_SKIPFILTER( ( AREAP ) pArea, 1 );
}
/*
* Reposition cursor relative to current position.
*/
static HB_ERRCODE hb_dbfSkip( DBFAREAP pArea, LONG lToSkip )
{
HB_ERRCODE uiError;
HB_TRACE(HB_TR_DEBUG, ("hb_dbfSkip(%p, %ld)", pArea, lToSkip));
if( pArea->lpdbPendingRel )
{
if( SELF_FORCEREL( ( AREAP ) pArea ) != HB_SUCCESS )
return HB_FAILURE;
}
pArea->fTop = pArea->fBottom = FALSE;
if( lToSkip == 0 || pArea->dbfi.itmCobExpr || pArea->dbfi.fFilter ||
hb_setGetDeleted() )
return SUPER_SKIP( ( AREAP ) pArea, lToSkip );
uiError = SELF_SKIPRAW( ( AREAP ) pArea, lToSkip );
/* TODO: remove this hack - it's not necessary if SKIPRAW works
as it should, Druzus */
/* Move first record and set Bof flag */
if( uiError == HB_SUCCESS && pArea->fBof && lToSkip < 0 )
{
uiError = SELF_GOTOP( ( AREAP ) pArea );
pArea->fBof = TRUE;
}
/* Update Bof and Eof flags */
if( lToSkip < 0 )
pArea->fEof = FALSE;
else /* if( lToSkip > 0 ) */
pArea->fBof = FALSE;
return uiError;
}
/*
* Reposition cursor, regardless of filter.
*/
static HB_ERRCODE hb_dbfSkipRaw( DBFAREAP pArea, LONG lToSkip )
{
HB_ERRCODE uiError;
HB_TRACE(HB_TR_DEBUG, ("hb_dbfSkipRaw(%p, %ld)", pArea, lToSkip));
if( pArea->lpdbPendingRel )
{
if( SELF_FORCEREL( ( AREAP ) pArea ) != HB_SUCCESS )
return HB_FAILURE;
}
if( lToSkip == 0 )
{
BOOL bBof, bEof;
/* Save flags */
bBof = pArea->fBof;
bEof = pArea->fEof;
uiError = SELF_GOTO( ( AREAP ) pArea, pArea->ulRecNo );
/* Restore flags */
pArea->fBof = bBof;
pArea->fEof = bEof;
}
else if( lToSkip < 0 && ( ULONG ) ( -lToSkip ) >= pArea->ulRecNo )
{
uiError = SELF_GOTO( ( AREAP ) pArea, 1 );
pArea->fBof = TRUE;
}
else
{
uiError = SELF_GOTO( ( AREAP ) pArea, pArea->ulRecNo + lToSkip );
}
return uiError;
}
/*
* Add a field to the WorkArea.
*/
static HB_ERRCODE hb_dbfAddField( DBFAREAP pArea, LPDBFIELDINFO pFieldInfo )
{
HB_TRACE(HB_TR_DEBUG, ("hb_dbfAddField(%p, %p)", pArea, pFieldInfo));
if( pArea->bMemoType == DB_MEMO_SMT &&
( pFieldInfo->uiType == HB_FT_MEMO ||
pFieldInfo->uiType == HB_FT_IMAGE ||
pFieldInfo->uiType == HB_FT_BLOB ||
pFieldInfo->uiType == HB_FT_OLE ) )
pFieldInfo->uiLen = 10;
/* Update field offset */
pArea->pFieldOffset[ pArea->uiFieldCount ] = pArea->uiRecordLen;
pArea->uiRecordLen += pFieldInfo->uiLen;
return SUPER_ADDFIELD( ( AREAP ) pArea, pFieldInfo );
}
/*
* Append a record to the WorkArea.
*/
static HB_ERRCODE hb_dbfAppend( DBFAREAP pArea, BOOL bUnLockAll )
{
ULONG ulNewRecord;
PHB_ITEM pError;
BOOL bLocked;
HB_ERRCODE uiError;
HB_TRACE(HB_TR_DEBUG, ("hb_dbfAppend(%p, %d)", pArea, (int) bUnLockAll));
if( SELF_GOCOLD( ( AREAP ) pArea ) == HB_FAILURE )
return HB_FAILURE;
if( pArea->fTrigger )
{
if( !hb_dbfTriggerDo( pArea, EVENT_APPEND, 0, NULL ) )
return HB_FAILURE;
}
if( pArea->fReadonly )
{
pError = hb_errNew();
hb_errPutGenCode( pError, EG_READONLY );
hb_errPutDescription( pError, hb_langDGetErrorDesc( EG_READONLY ) );
hb_errPutSubCode( pError, EDBF_READONLY );
SELF_ERROR( ( AREAP ) pArea, pError );
hb_itemRelease( pError );
return HB_FAILURE;
}
if( pArea->lpdbPendingRel )
{
if( pArea->lpdbPendingRel->isScoped )
{
if( SELF_FORCEREL( ( AREAP ) pArea ) != HB_SUCCESS )
return HB_FAILURE;
}
else /* Reset parent rel struct */
pArea->lpdbPendingRel = NULL;
}
if( pArea->fShared )
{
bLocked = FALSE;
if( SELF_RAWLOCK( ( AREAP ) pArea, APPEND_LOCK, 0 ) == HB_SUCCESS )
{
/* Update RecCount */
pArea->ulRecCount = hb_dbfCalcRecCount( pArea );
ulNewRecord = pArea->ulRecCount + 1;
if( pArea->fFLocked || hb_dbfIsLocked( pArea, ulNewRecord ) )
bLocked = TRUE;
else if( hb_dbfLockRecord( pArea, ulNewRecord, &bLocked, bUnLockAll ) != HB_SUCCESS )
{
if( bLocked )
hb_dbfUnlockRecord( pArea, ulNewRecord );
SELF_RAWLOCK( ( AREAP ) pArea, APPEND_UNLOCK, 0 );
return HB_FAILURE;
}
}
if( !bLocked )
{
SELF_RAWLOCK( ( AREAP ) pArea, APPEND_UNLOCK, 0 );
pError = hb_errNew();
hb_errPutGenCode( pError, EG_APPENDLOCK );
hb_errPutDescription( pError, hb_langDGetErrorDesc( EG_APPENDLOCK ) );
hb_errPutSubCode( pError, EDBF_APPENDLOCK );
hb_errPutFlags( pError, EF_CANDEFAULT );
SELF_ERROR( ( AREAP ) pArea, pError );
hb_itemRelease( pError );
return HB_FAILURE;
}
}
/* Clear record buffer and update pArea */
hb_dbfSetBlankRecord( pArea, HB_BLANK_APPEND );
pArea->fValidBuffer = pArea->fUpdateHeader = pArea->fRecordChanged =
pArea->fAppend = pArea->fPositioned = TRUE;
pArea->ulRecCount ++;
pArea->ulRecNo = pArea->ulRecCount;
pArea->fDeleted = pArea->fBof = pArea->fEof = pArea->fFound = FALSE;
pArea->fEncrypted = pArea->pCryptKey != NULL && !pArea->fHasMemo;
if( pArea->fShared )
{
uiError = SELF_GOCOLD( ( AREAP ) pArea );
SELF_RAWLOCK( ( AREAP ) pArea, APPEND_UNLOCK, 0 );
return uiError;
}
return HB_SUCCESS;
}
/*
* Delete a record.
*/
static HB_ERRCODE hb_dbfDeleteRec( DBFAREAP pArea )
{
HB_TRACE(HB_TR_DEBUG, ("hb_dbfDeleteRec(%p)", pArea));
if( pArea->fTrigger )
{
if( !hb_dbfTriggerDo( pArea, EVENT_DELETE, 0, NULL ) )
return HB_FAILURE;
}
if( pArea->lpdbPendingRel )
{
if( SELF_FORCEREL( ( AREAP ) pArea ) != HB_SUCCESS )
return HB_FAILURE;
}
/* Read record */
if( !pArea->fValidBuffer && !hb_dbfReadRecord( pArea ) )
return HB_FAILURE;
if( !pArea->fPositioned )
return HB_SUCCESS;
/* Buffer is hot? */
if( !pArea->fRecordChanged && SELF_GOHOT( ( AREAP ) pArea ) == HB_FAILURE )
return HB_FAILURE;
pArea->pRecord[ 0 ] = '*';
pArea->fDeleted = TRUE;
return HB_SUCCESS;
}
/*
* Determine deleted status for a record.
*/
static HB_ERRCODE hb_dbfDeleted( DBFAREAP pArea, BOOL * pDeleted )
{
HB_TRACE(HB_TR_DEBUG, ("hb_dbfDeleted(%p, %p)", pArea, pDeleted));
if( pArea->lpdbPendingRel )
{
if( SELF_FORCEREL( ( AREAP ) pArea ) != HB_SUCCESS )
return HB_FAILURE;
}
/* Read record */
if( !pArea->fValidBuffer && !hb_dbfReadRecord( pArea ) )
return HB_FAILURE;
* pDeleted = pArea->fDeleted;
return HB_SUCCESS;
}
/*
* Write data buffer to the data store.
*/
static HB_ERRCODE hb_dbfFlush( DBFAREAP pArea )
{
HB_ERRCODE uiError;
HB_TRACE(HB_TR_DEBUG, ("hb_dbfFlush(%p)", pArea));
uiError = SELF_GOCOLD( ( AREAP ) pArea );
if( uiError == HB_SUCCESS )
{
if( pArea->fUpdateHeader )
uiError = SELF_WRITEDBHEADER( ( AREAP ) pArea );
}
if( hb_setGetHardCommit() && uiError == HB_SUCCESS )
{
if( pArea->fDataFlush )
{
hb_fileCommit( pArea->pDataFile );
pArea->fDataFlush = FALSE;
}
if( pArea->fHasMemo && pArea->pMemoFile && pArea->fMemoFlush )
{
hb_fileCommit( pArea->pMemoFile );
pArea->fMemoFlush = FALSE;
}
}
return uiError;
}
/*
* Retrieve current record buffer
*/
static HB_ERRCODE hb_dbfGetRec( DBFAREAP pArea, BYTE ** pBuffer )
{
HB_TRACE(HB_TR_DEBUG, ("hb_dbfGetRec(%p, %p)", pArea, pBuffer));
if( pBuffer != NULL )
{
/* Read record */
if( !pArea->fValidBuffer && !hb_dbfReadRecord( pArea ) )
return HB_FAILURE;
*pBuffer = pArea->pRecord;
}
else
{
if( pArea->pRecord[ 0 ] == 'D' || pArea->pRecord[ 0 ] == 'E' )
{
pArea->fEncrypted = TRUE;
pArea->pRecord[ 0 ] = pArea->pRecord[ 0 ] == 'D' ? '*' : ' ';
if( pArea->pCryptKey && pArea->bCryptType == DB_CRYPT_SIX )
{
hb_sxDeCrypt( pArea->pRecord + 1, pArea->pRecord + 1,
pArea->pCryptKey, pArea->uiRecordLen - 1 );
}
}
else
{
pArea->fEncrypted = FALSE;
}
}
return HB_SUCCESS;
}
/*
* Obtain the current value of a field.
*/
static HB_ERRCODE hb_dbfGetValue( DBFAREAP pArea, USHORT uiIndex, PHB_ITEM pItem )
{
LPFIELD pField;
BOOL fError;
PHB_ITEM pError;
char szBuffer[24];
HB_TRACE(HB_TR_DEBUG, ("hb_dbfGetValue(%p, %hu, %p)", pArea, uiIndex, pItem));
if( pArea->lpdbPendingRel )
{
if( SELF_FORCEREL( ( AREAP ) pArea ) != HB_SUCCESS )
return HB_FAILURE;
}
/* Read record */
if( !pArea->fValidBuffer && !hb_dbfReadRecord( pArea ) )
return HB_FAILURE;
fError = FALSE;
uiIndex--;
pField = pArea->lpFields + uiIndex;
switch( pField->uiType )
{
case HB_FT_STRING:
#ifndef HB_CDP_SUPPORT_OFF
if( pArea->cdPage != hb_vmCDP() )
{
char * pVal = ( char * ) hb_xgrab( pField->uiLen + 1 );
memcpy( pVal, pArea->pRecord + pArea->pFieldOffset[ uiIndex ], pField->uiLen );
pVal[ pField->uiLen ] = '\0';
hb_cdpnTranslate( pVal, pArea->cdPage, hb_vmCDP(), pField->uiLen );
hb_itemPutCLPtr( pItem, pVal, pField->uiLen );
}
else
#endif
{
hb_itemPutCL( pItem, ( char * ) pArea->pRecord + pArea->pFieldOffset[ uiIndex ],
pField->uiLen );
}
break;
case HB_FT_LOGICAL:
hb_itemPutL( pItem, pArea->pRecord[ pArea->pFieldOffset[ uiIndex ] ] == 'T' ||
pArea->pRecord[ pArea->pFieldOffset[ uiIndex ] ] == 't' ||
pArea->pRecord[ pArea->pFieldOffset[ uiIndex ] ] == 'Y' ||
pArea->pRecord[ pArea->pFieldOffset[ uiIndex ] ] == 'y' );
break;
case HB_FT_DATE:
if( pField->uiLen == 3 )
{
hb_itemPutDL( pItem, HB_GET_LE_UINT24( pArea->pRecord + pArea->pFieldOffset[ uiIndex ] ) );
}
else if( pField->uiLen == 4 )
{
hb_itemPutDL( pItem, HB_GET_LE_UINT32( pArea->pRecord + pArea->pFieldOffset[ uiIndex ] ) );
}
else
{
hb_itemPutDS( pItem, ( char * ) pArea->pRecord + pArea->pFieldOffset[ uiIndex ] );
}
break;
case HB_FT_TIME:
if( pField->uiLen == 4 )
{
hb_itemPutC( pItem, hb_timeStampStr( szBuffer,
HB_GET_LE_INT32( pArea->pRecord + pArea->pFieldOffset[ uiIndex ] ) ) );
break;
}
/* no break */
case HB_FT_MODTIME:
case HB_FT_DAYTIME:
hb_itemPutC( pItem, hb_dateTimeStampStr( szBuffer,
HB_GET_LE_INT32( pArea->pRecord + pArea->pFieldOffset[ uiIndex ] ),
HB_GET_LE_INT32( pArea->pRecord + pArea->pFieldOffset[ uiIndex ] + 4 ) ) );
break;
case HB_FT_INTEGER:
case HB_FT_CURRENCY:
case HB_FT_AUTOINC:
case HB_FT_ROWVER:
if( pField->uiDec )
{
double dValue;
int iLen;
switch( pField->uiLen )
{
case 1:
dValue = ( SCHAR ) pArea->pRecord[ pArea->pFieldOffset[ uiIndex ] ];
iLen = 4;
break;
case 2:
dValue = HB_GET_LE_INT16( pArea->pRecord + pArea->pFieldOffset[ uiIndex ] );
iLen = 6;
break;
case 3:
dValue = HB_GET_LE_INT24( pArea->pRecord + pArea->pFieldOffset[ uiIndex ] );
iLen = 10;
break;
case 4:
dValue = HB_GET_LE_INT32( pArea->pRecord + pArea->pFieldOffset[ uiIndex ] );
iLen = 10;
break;
case 8:
dValue = ( double ) HB_GET_LE_INT64( pArea->pRecord + pArea->pFieldOffset[ uiIndex ] );
iLen = 20;
break;
default:
dValue = 0;
iLen = 0;
fError = TRUE;
break;
}
hb_itemPutNDLen( pItem, hb_numDecConv( dValue, ( int ) pField->uiDec ),
iLen, ( int ) pField->uiDec );
}
else
{
switch( pField->uiLen )
{
case 1:
hb_itemPutNILen( pItem, ( SCHAR ) pArea->pRecord[ pArea->pFieldOffset[ uiIndex ] ], 4 );
break;
case 2:
hb_itemPutNILen( pItem, ( int ) HB_GET_LE_INT16( pArea->pRecord + pArea->pFieldOffset[ uiIndex ] ), 6 );
break;
case 3:
hb_itemPutNIntLen( pItem, ( HB_LONG ) HB_GET_LE_INT24( pArea->pRecord + pArea->pFieldOffset[ uiIndex ] ), 10 );
break;
case 4:
hb_itemPutNIntLen( pItem, ( HB_LONG ) HB_GET_LE_INT32( pArea->pRecord + pArea->pFieldOffset[ uiIndex ] ), 10 );
break;
case 8:
#ifndef HB_LONG_LONG_OFF
hb_itemPutNIntLen( pItem, ( HB_LONG ) HB_GET_LE_INT64( pArea->pRecord + pArea->pFieldOffset[ uiIndex ] ), 20 );
#else
hb_itemPutNLen( pItem, ( double ) HB_GET_LE_INT64( pArea->pRecord + pArea->pFieldOffset[ uiIndex ] ), 20, 0 );
#endif
break;
default:
fError = TRUE;
break;
}
}
break;
case HB_FT_DOUBLE:
case HB_FT_CURDOUBLE:
hb_itemPutNDLen( pItem, HB_GET_LE_DOUBLE( pArea->pRecord + pArea->pFieldOffset[ uiIndex ] ),
20 - ( pField->uiDec > 0 ? ( pField->uiDec + 1 ) : 0 ),
( int ) pField->uiDec );
break;
case HB_FT_LONG:
case HB_FT_FLOAT:
/* DBASE documentation defines maximum numeric field size as 20
* but Clipper allows to create longer fields so I remove this
* limit, Druzus
*/
/*
if( pField->uiLen > 20 )
fError = TRUE;
else
*/
{
HB_LONG lVal;
double dVal;
BOOL fDbl;
fDbl = hb_strnToNum( (const char *) pArea->pRecord + pArea->pFieldOffset[ uiIndex ],
pField->uiLen, &lVal, &dVal );
if( pField->uiDec )
{
hb_itemPutNDLen( pItem, fDbl ? dVal : ( double ) lVal,
( int ) ( pField->uiLen - pField->uiDec - 1 ),
( int ) pField->uiDec );
}
else if( fDbl )
{
hb_itemPutNDLen( pItem, dVal, ( int ) pField->uiLen, 0 );
}
else
{
hb_itemPutNIntLen( pItem, lVal, ( int ) pField->uiLen );
}
}
break;
case HB_FT_ANY:
if( pField->uiLen == 3 )
{
hb_itemPutDL( pItem, hb_sxPtoD( ( char * ) pArea->pRecord + pArea->pFieldOffset[ uiIndex ] ) );
}
else if( pField->uiLen == 4 )
{
hb_itemPutNIntLen( pItem, ( HB_LONG ) HB_GET_LE_INT32( pArea->pRecord + pArea->pFieldOffset[ uiIndex ] ), 10 );
}
else
{
fError = TRUE;
}
break;
case HB_FT_MEMO:
default:
fError = TRUE;
break;
}
/* Any error? */
if( fError )
{
pError = hb_errNew();
hb_errPutGenCode( pError, EG_DATATYPE );
hb_errPutDescription( pError, hb_langDGetErrorDesc( EG_DATATYPE ) );
hb_errPutOperation( pError, hb_dynsymName( ( PHB_DYNS ) pField->sym ) );
hb_errPutSubCode( pError, EDBF_DATATYPE );
SELF_ERROR( ( AREAP ) pArea, pError );
hb_itemRelease( pError );
return HB_FAILURE;
}
if( pArea->fTrigger )
{
if( !hb_dbfTriggerDo( pArea, EVENT_GET, uiIndex + 1, pItem ) )
return HB_FAILURE;
}
return HB_SUCCESS;
}
/*
* Obtain the length of a field value.
*/
static HB_ERRCODE hb_dbfGetVarLen( DBFAREAP pArea, USHORT uiIndex, ULONG * pLength )
{
HB_TRACE(HB_TR_DEBUG, ("hb_dbfGetVarLen(%p, %hu, %p)", pArea, uiIndex, pLength));
* pLength = pArea->lpFields[ uiIndex - 1 ].uiLen;
return HB_SUCCESS;
}
/*
* Perform a write of WorkArea memory to the data store.
*/
static HB_ERRCODE hb_dbfGoCold( DBFAREAP pArea )
{
HB_TRACE(HB_TR_DEBUG, ("hb_dbfGoCold(%p)", pArea));
if( pArea->fRecordChanged )
{
if( pArea->fTrigger )
{
/* The pending relation may move the record pointer so we should
disable them for trigger evaluation */
LPDBRELINFO lpdbPendingRel = pArea->lpdbPendingRel;
pArea->lpdbPendingRel = NULL;
hb_dbfTriggerDo( pArea, EVENT_UPDATE, 0, NULL );
/* Restore disabled pending relation */
pArea->lpdbPendingRel = lpdbPendingRel;
}
if( pArea->fModStamp )
hb_dbfUpdateStampFields( pArea );
/* Write current record */
if( ! hb_dbfWriteRecord( pArea ) )
return HB_FAILURE;
if( pArea->fAppend )
{
pArea->fUpdateHeader = TRUE;
pArea->fAppend = FALSE;
}
/* Update header */
if( pArea->fShared && pArea->fUpdateHeader )
return SELF_WRITEDBHEADER( ( AREAP ) pArea );
}
return HB_SUCCESS;
}
/*
* Mark the WorkArea data buffer as hot.
*/
static HB_ERRCODE hb_dbfGoHot( DBFAREAP pArea )
{
PHB_ITEM pError;
HB_TRACE(HB_TR_DEBUG, ("hb_dbfGoHot(%p)", pArea));
if( pArea->fReadonly )
{
pError = hb_errNew();
hb_errPutGenCode( pError, EG_READONLY );
hb_errPutDescription( pError, hb_langDGetErrorDesc( EG_READONLY ) );
hb_errPutSubCode( pError, EDBF_READONLY );
SELF_ERROR( ( AREAP ) pArea, pError );
hb_itemRelease( pError );
return HB_FAILURE;
}
else if( pArea->fShared && !pArea->fFLocked &&
!hb_dbfIsLocked( pArea, pArea->ulRecNo ) )
{
pError = hb_errNew();
hb_errPutGenCode( pError, EG_UNLOCKED );
hb_errPutDescription( pError, hb_langDGetErrorDesc( EG_UNLOCKED ) );
hb_errPutSubCode( pError, EDBF_UNLOCKED );
SELF_ERROR( ( AREAP ) pArea, pError );
hb_itemRelease( pError );
return HB_FAILURE;
}
pArea->fRecordChanged = TRUE;
return HB_SUCCESS;
}
/*
* Replace the current record.
*/
static HB_ERRCODE hb_dbfPutRec( DBFAREAP pArea, BYTE * pBuffer )
{
HB_TRACE(HB_TR_DEBUG, ("hb_dbfPutRec(%p, %p)", pArea, pBuffer));
if( pBuffer != NULL )
{
if( pArea->lpdbPendingRel )
{
if( SELF_FORCEREL( ( AREAP ) pArea ) != HB_SUCCESS )
return HB_FAILURE;
}
if( !pArea->fPositioned )
return HB_SUCCESS;
if( !pArea->fRecordChanged && SELF_GOHOT( ( AREAP ) pArea ) != HB_SUCCESS )
return HB_FAILURE;
/* Copy data to buffer */
memcpy( pArea->pRecord, pBuffer, pArea->uiRecordLen );
/*
* TODO: such operation should be forbidden
* maybe it will be good to return HB_FAILURE when
* pArea->pRecord[ 0 ] != '*' && pArea->pRecord[ 0 ] != ' '
*/
if( pArea->pRecord[ 0 ] == 'D' || pArea->pRecord[ 0 ] == 'E' )
{
if( !pArea->fHasMemo )
pArea->fEncrypted = TRUE;
pArea->pRecord[ 0 ] = pArea->pRecord[ 0 ] == 'D' ? '*' : ' ';
}
pArea->fDeleted = pArea->pRecord[ 0 ] == '*';
}
else /* if( pArea->fRecordChanged ) */
{
BYTE * pRecord = pArea->pRecord;
USHORT uiWritten;
if( pArea->pCryptKey )
{
/* This enables record encryption in update operation */
if( pArea->bCryptType == DB_CRYPT_SIX && !pArea->fHasMemo )
pArea->fEncrypted = TRUE;
if( pArea->bCryptType == DB_CRYPT_SIX && pArea->fEncrypted )
{
pRecord = ( BYTE * ) hb_xgrab( pArea->uiRecordLen );
pRecord[ 0 ] = pArea->fDeleted ? 'D' : 'E';
hb_sxEnCrypt( pArea->pRecord + 1, pRecord + 1, pArea->pCryptKey,
pArea->uiRecordLen - 1 );
}
}
/* Write data to file */
uiWritten = hb_fileWriteAt( pArea->pDataFile, pRecord, pArea->uiRecordLen,
( HB_FOFFSET ) pArea->uiHeaderLen +
( HB_FOFFSET ) ( pArea->ulRecNo - 1 ) *
( HB_FOFFSET ) pArea->uiRecordLen );
if( pRecord != pArea->pRecord )
hb_xfree( pRecord );
if( uiWritten != pArea->uiRecordLen )
{
PHB_ITEM pError = hb_errNew();
hb_errPutGenCode( pError, EG_WRITE );
hb_errPutDescription( pError, hb_langDGetErrorDesc( EG_WRITE ) );
hb_errPutSubCode( pError, EDBF_WRITE );
hb_errPutOsCode( pError, hb_fsError() );
hb_errPutFileName( pError, pArea->szDataFileName );
SELF_ERROR( ( AREAP ) pArea, pError );
hb_itemRelease( pError );
return HB_FAILURE;
}
}
return HB_SUCCESS;
}
/*
* Assign a value to a field.
*/
static HB_ERRCODE hb_dbfPutValue( DBFAREAP pArea, USHORT uiIndex, PHB_ITEM pItem )
{
USHORT uiSize;
LPFIELD pField;
/* this buffer is for date and number conversion,
* DBASE documentation defines maximum numeric field size as 20
* but Clipper allows to create longer fields so I removed this
* limit [druzus]
*/
char szBuffer[ 256 ];
PHB_ITEM pError;
HB_ERRCODE uiError;
HB_TRACE(HB_TR_DEBUG, ("hb_dbfPutValue(%p, %hu, %p)", pArea, uiIndex, pItem));
if( pArea->fTrigger )
{
if( !hb_dbfTriggerDo( pArea, EVENT_PUT, uiIndex, pItem ) )
return HB_FAILURE;
}
if( pArea->lpdbPendingRel )
{
if( SELF_FORCEREL( ( AREAP ) pArea ) != HB_SUCCESS )
return HB_FAILURE;
}
/* Read record */
if( !pArea->fValidBuffer && !hb_dbfReadRecord( pArea ) )
return HB_FAILURE;
if( !pArea->fPositioned )
return HB_SUCCESS;
/* Buffer is hot? */
if( !pArea->fRecordChanged && SELF_GOHOT( ( AREAP ) pArea ) == HB_FAILURE )
return HB_FAILURE;
uiError = HB_SUCCESS;
uiIndex--;
pField = pArea->lpFields + uiIndex;
if( pField->uiType == HB_FT_MEMO ||
pField->uiType == HB_FT_IMAGE ||
pField->uiType == HB_FT_BLOB ||
pField->uiType == HB_FT_OLE )
uiError = EDBF_DATATYPE;
else
{
if( HB_IS_MEMO( pItem ) || HB_IS_STRING( pItem ) )
{
if( pField->uiType == HB_FT_STRING )
{
uiSize = ( USHORT ) hb_itemGetCLen( pItem );
if( uiSize > pField->uiLen )
uiSize = pField->uiLen;
memcpy( pArea->pRecord + pArea->pFieldOffset[ uiIndex ],
hb_itemGetCPtr( pItem ), uiSize );
#ifndef HB_CDP_SUPPORT_OFF
hb_cdpnTranslate( (char *) pArea->pRecord + pArea->pFieldOffset[ uiIndex ], hb_vmCDP(), pArea->cdPage, uiSize );
#endif
memset( pArea->pRecord + pArea->pFieldOffset[ uiIndex ] + uiSize,
' ', pField->uiLen - uiSize );
}
else if( pField->uiType == HB_FT_DAYTIME )
{
LONG lJulian, lMillisec;
BYTE * ptr = pArea->pRecord + pArea->pFieldOffset[ uiIndex ];
hb_dateTimeStampStrGet( hb_itemGetCPtr( pItem ), &lJulian, &lMillisec );
HB_PUT_LE_UINT32( ptr, lJulian );
ptr += 4;
HB_PUT_LE_UINT32( ptr, lMillisec );
}
else
uiError = EDBF_DATATYPE;
}
/* Must precede HB_IS_NUMERIC() because a DATE is also a NUMERIC. (xHarbour) */
else if( HB_IS_DATE( pItem ) )
{
if( pField->uiType == HB_FT_DATE )
{
if( pField->uiLen == 3 )
{
HB_PUT_LE_UINT24( pArea->pRecord + pArea->pFieldOffset[ uiIndex ],
hb_itemGetDL( pItem ) );
}
else if( pField->uiLen == 4 )
{
HB_PUT_LE_UINT32( pArea->pRecord + pArea->pFieldOffset[ uiIndex ],
hb_itemGetDL( pItem ) );
}
else
{
hb_itemGetDS( pItem, szBuffer );
memcpy( pArea->pRecord + pArea->pFieldOffset[ uiIndex ], szBuffer, 8 );
}
}
else if( pField->uiType == HB_FT_ANY && pField->uiLen == 3 )
{
hb_sxDtoP( ( char * ) pArea->pRecord + pArea->pFieldOffset[ uiIndex ],
hb_itemGetDL( pItem ) );
}
else
uiError = EDBF_DATATYPE;
}
else if( HB_IS_NUMBER( pItem ) )
{
if( pField->uiType == HB_FT_LONG || pField->uiType == HB_FT_FLOAT )
{
if( hb_itemStrBuf( szBuffer, pItem, pField->uiLen, pField->uiDec ) )
{
memcpy( pArea->pRecord + pArea->pFieldOffset[ uiIndex ],
szBuffer, pField->uiLen );
}
else
{
uiError = EDBF_DATAWIDTH;
memset( pArea->pRecord + pArea->pFieldOffset[ uiIndex ],
'*', pField->uiLen );
}
}
else if( pField->uiType == HB_FT_INTEGER )
{
HB_LONG lVal;
double dVal;
int iSize;
if( pField->uiDec )
{
dVal = hb_numDecConv( hb_itemGetND( pItem ), - ( int ) pField->uiDec );
lVal = ( HB_LONG ) dVal;
if( ! HB_DBL_LIM_INT64( dVal ) )
iSize = 99;
else
#ifndef HB_LONG_LONG_OFF
iSize = HB_LIM_INT8( lVal ) ? 1 :
( HB_LIM_INT16( lVal ) ? 2 :
( HB_LIM_INT24( lVal ) ? 3 :
( HB_LIM_INT32( lVal ) ? 4 : 8 ) ) );
#else
iSize = HB_DBL_LIM_INT8( dVal ) ? 1 :
( HB_DBL_LIM_INT16( dVal ) ? 2 :
( HB_DBL_LIM_INT24( dVal ) ? 3 :
( HB_DBL_LIM_INT32( dVal ) ? 4 : 8 ) ) );
#endif
}
else if( HB_IS_DOUBLE( pItem ) )
{
dVal = hb_itemGetND( pItem );
lVal = ( HB_LONG ) dVal;
if( ! HB_DBL_LIM_INT64( dVal ) )
iSize = 99;
else
#ifndef HB_LONG_LONG_OFF
iSize = HB_LIM_INT8( lVal ) ? 1 :
( HB_LIM_INT16( lVal ) ? 2 :
( HB_LIM_INT24( lVal ) ? 3 :
( HB_LIM_INT32( lVal ) ? 4 : 8 ) ) );
#else
iSize = HB_DBL_LIM_INT8( dVal ) ? 1 :
( HB_DBL_LIM_INT16( dVal ) ? 2 :
( HB_DBL_LIM_INT24( dVal ) ? 3 :
( HB_DBL_LIM_INT32( dVal ) ? 4 : 8 ) ) );
#endif
}
else
{
lVal = ( HB_LONG ) hb_itemGetNInt( pItem );
#ifdef HB_LONG_LONG_OFF
dVal = ( double ) lVal;
#endif
iSize = HB_LIM_INT8( lVal ) ? 1 :
( HB_LIM_INT16( lVal ) ? 2 :
( HB_LIM_INT24( lVal ) ? 3 :
( HB_LIM_INT32( lVal ) ? 4 : 8 ) ) );
}
if( iSize > pField->uiLen )
{
uiError = EDBF_DATAWIDTH;
}
else
{
switch( pField->uiLen )
{
case 1:
pArea->pRecord[ pArea->pFieldOffset[ uiIndex ] ] = ( signed char ) lVal;
break;
case 2:
HB_PUT_LE_UINT16( pArea->pRecord + pArea->pFieldOffset[ uiIndex ], ( UINT16 ) lVal );
break;
case 3:
HB_PUT_LE_UINT24( pArea->pRecord + pArea->pFieldOffset[ uiIndex ], ( UINT32 ) lVal );
break;
case 4:
HB_PUT_LE_UINT32( pArea->pRecord + pArea->pFieldOffset[ uiIndex ], ( UINT32 ) lVal );
break;
case 8:
#ifndef HB_LONG_LONG_OFF
HB_PUT_LE_UINT64( pArea->pRecord + pArea->pFieldOffset[ uiIndex ], ( UINT64 ) lVal );
#else
HB_PUT_LE_UINT64( pArea->pRecord + pArea->pFieldOffset[ uiIndex ], dVal );
#endif
break;
default:
uiError = EDBF_DATATYPE;
break;
}
}
}
else if( pField->uiType == HB_FT_DOUBLE )
{
HB_PUT_LE_DOUBLE( pArea->pRecord + pArea->pFieldOffset[ uiIndex ], hb_itemGetND( pItem ) );
}
else if( pField->uiType == HB_FT_ANY && pField->uiLen == 4 )
{
HB_LONG lVal = hb_itemGetNInt( pItem );
if( HB_IS_DOUBLE( pItem ) ?
HB_DBL_LIM_INT32( hb_itemGetND( pItem ) ) :
HB_LIM_INT32( lVal ) )
{
HB_PUT_LE_UINT32( pArea->pRecord + pArea->pFieldOffset[ uiIndex ], ( UINT32 ) lVal );
}
else
{
uiError = EDBF_DATAWIDTH;
}
}
else
{
uiError = EDBF_DATATYPE;
}
}
else if( HB_IS_LOGICAL( pItem ) )
{
if( pField->uiType == HB_FT_LOGICAL )
pArea->pRecord[ pArea->pFieldOffset[ uiIndex ] ] = hb_itemGetL( pItem ) ? 'T' : 'F';
else
uiError = EDBF_DATATYPE;
}
else
uiError = EDBF_DATATYPE;
}
/* Exit if any error */
if( uiError != HB_SUCCESS )
{
pError = hb_errNew();
hb_errPutGenCode( pError, hb_dbfGetEGcode( uiError ) );
hb_errPutDescription( pError, hb_langDGetErrorDesc( hb_dbfGetEGcode( uiError ) ) );
hb_errPutOperation( pError, hb_dynsymName( ( PHB_DYNS ) pField->sym ) );
hb_errPutSubCode( pError, uiError );
hb_errPutFlags( pError, EF_CANDEFAULT );
uiError = SELF_ERROR( ( AREAP ) pArea, pError );
hb_itemRelease( pError );
return uiError == E_DEFAULT ? HB_SUCCESS : HB_FAILURE;
}
return HB_SUCCESS;
}
/*
* Undelete the current record.
*/
static HB_ERRCODE hb_dbfRecall( DBFAREAP pArea )
{
HB_TRACE(HB_TR_DEBUG, ("hb_dbfRecall(%p)", pArea));
if( pArea->fTrigger )
{
if( !hb_dbfTriggerDo( pArea, EVENT_RECALL, 0, NULL ) )
return HB_FAILURE;
}
if( pArea->lpdbPendingRel )
{
if( SELF_FORCEREL( ( AREAP ) pArea ) != HB_SUCCESS )
return HB_FAILURE;
}
/* Read record */
if( !pArea->fValidBuffer && !hb_dbfReadRecord( pArea ) )
return HB_FAILURE;
if( !pArea->fPositioned )
return HB_SUCCESS;
/* Buffer is hot? */
if( !pArea->fRecordChanged && SELF_GOHOT( ( AREAP ) pArea ) != HB_SUCCESS )
return HB_FAILURE;
pArea->pRecord[ 0 ] = ' ';
pArea->fDeleted = FALSE;
return HB_SUCCESS;
}
/*
* Obtain number of records in WorkArea.
*/
static HB_ERRCODE hb_dbfRecCount( DBFAREAP pArea, ULONG * pRecCount )
{
HB_TRACE(HB_TR_DEBUG, ("hb_dbfRecCount(%p, %p)", pArea, pRecCount));
/* Update record count */
if( pArea->fShared )
pArea->ulRecCount = hb_dbfCalcRecCount( pArea );
* pRecCount = pArea->ulRecCount;
return HB_SUCCESS;
}
/*
* Obtain physical row number at current WorkArea cursor position.
*/
static HB_ERRCODE hb_dbfRecNo( DBFAREAP pArea, ULONG * ulRecNo )
{
HB_TRACE(HB_TR_DEBUG, ("hb_dbfRecNo(%p, %p)", pArea, ulRecNo));
if( pArea->lpdbPendingRel )
{
if( SELF_FORCEREL( ( AREAP ) pArea ) != HB_SUCCESS )
return HB_FAILURE;
}
*ulRecNo = pArea->ulRecNo;
return HB_SUCCESS;
}
/*
* Obtain physical row ID at current WorkArea cursor position.
*/
static HB_ERRCODE hb_dbfRecId( DBFAREAP pArea, PHB_ITEM pRecNo )
{
HB_ERRCODE errCode;
ULONG ulRecNo;
HB_TRACE(HB_TR_DEBUG, ("hb_dbfRecId(%p, %p)", pArea, pRecNo));
errCode = SELF_RECNO( ( AREAP ) pArea, &ulRecNo );
#ifdef HB_C52_STRICT
/* this is for strict Clipper compatibility but IMHO Clipper should not
do that and always set fixed size independent to the record number */
if( ulRecNo < 10000000 )
{
hb_itemPutNLLen( pRecNo, ulRecNo, 7 );
}
else
{
hb_itemPutNLLen( pRecNo, ulRecNo, 10 );
}
#else
hb_itemPutNInt( pRecNo, ulRecNo );
#endif
return errCode;
}
/*
* Establish the extent of the array of fields for a WorkArea.
*/
static HB_ERRCODE hb_dbfSetFieldExtent( DBFAREAP pArea, USHORT uiFieldExtent )
{
HB_TRACE(HB_TR_DEBUG, ("hb_dbfSetFieldExtent(%p, %hu)", pArea, uiFieldExtent));
if( SUPER_SETFIELDEXTENT( ( AREAP ) pArea, uiFieldExtent ) == HB_FAILURE )
return HB_FAILURE;
/* Alloc field offsets array */
if( uiFieldExtent )
{
pArea->pFieldOffset = ( USHORT * ) hb_xgrab( uiFieldExtent * sizeof( USHORT ) );
memset( pArea->pFieldOffset, 0, uiFieldExtent * sizeof( USHORT ) );
}
return HB_SUCCESS;
}
/*
* Close the table in the WorkArea.
*/
static HB_ERRCODE hb_dbfClose( DBFAREAP pArea )
{
HB_TRACE(HB_TR_DEBUG, ("hb_dbfClose(%p)", pArea));
if( pArea->fTrigger )
{
if( !hb_dbfTriggerDo( pArea, EVENT_PRECLOSE, 0, NULL ) )
return HB_FAILURE;
}
/* Reset parent rel struct */
pArea->lpdbPendingRel = NULL;
/* Update record and unlock records */
if( pArea->pDataFile )
{
/* update buffers */
SELF_GOCOLD( ( AREAP ) pArea );
/* Unlock all records */
SELF_UNLOCK( ( AREAP ) pArea, NULL );
/* Update header */
if( pArea->fUpdateHeader )
SELF_WRITEDBHEADER( ( AREAP ) pArea );
/* It's not Clipper compatible but it reduces the problem with
byggy Windows network setting */
if( hb_setGetHardCommit() )
SELF_FLUSH( ( AREAP ) pArea );
}
SUPER_CLOSE( ( AREAP ) pArea );
if( pArea->pDataFile )
{
hb_fileClose( pArea->pDataFile );
pArea->pDataFile = NULL;
if( pArea->fTemporary )
hb_fsDelete( ( BYTE * ) pArea->szDataFileName );
}
/* Close the memo file */
if( pArea->fHasMemo && pArea->pMemoFile )
{
hb_fileClose( pArea->pMemoFile );
pArea->pMemoFile = NULL;
if( pArea->fTemporary )
hb_fsDelete( ( BYTE * ) pArea->szMemoFileName );
}
pArea->fTemporary = FALSE;
/* Free field offset array */
if( pArea->pFieldOffset )
{
hb_xfree( pArea->pFieldOffset );
pArea->pFieldOffset = NULL;
}
/* Free buffer */
if( pArea->pRecord )
{
hb_xfree( pArea->pRecord );
pArea->pRecord = NULL;
}
/* Free encryption password key */
if( pArea->pCryptKey )
{
memset( pArea->pCryptKey, '\0', 8 );
hb_xfree( pArea->pCryptKey );
pArea->pCryptKey = NULL;
}
/* Free all filenames */
if( pArea->szDataFileName )
{
hb_xfree( pArea->szDataFileName );
pArea->szDataFileName = NULL;
}
if( pArea->szMemoFileName )
{
hb_xfree( pArea->szMemoFileName );
pArea->szMemoFileName = NULL;
}
if( pArea->fTrigger )
{
hb_dbfTriggerDo( pArea, EVENT_POSTCLOSE, 0, NULL );
pArea->fTrigger = FALSE;
}
return HB_SUCCESS;
}
/*
* Create a data store in the specified WorkArea.
*/
static HB_ERRCODE hb_dbfCreate( DBFAREAP pArea, LPDBOPENINFO pCreateInfo )
{
HB_ERRCODE errCode = HB_SUCCESS;
ULONG ulSize;
USHORT uiCount;
BOOL fRetry, fError, fRawBlob;
DBFFIELD * pThisField;
BYTE * pBuffer;
PHB_FNAME pFileName;
PHB_ITEM pItem = NULL, pError;
BYTE szFileName[ _POSIX_PATH_MAX + 1 ];
HB_TRACE(HB_TR_DEBUG, ("hb_dbfCreate(%p, %p)", pArea, pCreateInfo));
pArea->lpdbOpenInfo = pCreateInfo;
if( ! pArea->fTemporary )
{
pFileName = hb_fsFNameSplit( ( char * ) pCreateInfo->abName );
if( ! pFileName->szExtension && hb_setGetDefExtension() )
{
pItem = hb_itemPutC( pItem, NULL );
if( SELF_INFO( ( AREAP ) pArea, DBI_TABLEEXT, pItem ) != HB_SUCCESS )
{
hb_itemRelease( pItem );
hb_xfree( pFileName );
pArea->lpdbOpenInfo = NULL;
return HB_FAILURE;
}
pFileName->szExtension = hb_itemGetCPtr( pItem );
hb_fsFNameMerge( ( char * ) szFileName, pFileName );
}
else
{
hb_strncpy( ( char * ) szFileName, ( char * ) pCreateInfo->abName, sizeof( szFileName ) - 1 );
}
hb_xfree( pFileName );
}
pItem = hb_itemPutL( pItem, FALSE );
fRawBlob = SELF_RDDINFO( SELF_RDDNODE( pArea ), RDDI_BLOB_SUPPORT, pCreateInfo->ulConnection, pItem ) == HB_SUCCESS &&
hb_itemGetL( pItem );
if( pArea->bTableType == 0 )
{
pItem = hb_itemPutNI( pItem, 0 );
if( SELF_INFO( ( AREAP ) pArea, DBI_TABLETYPE, pItem ) != HB_SUCCESS )
{
hb_itemRelease( pItem );
pArea->lpdbOpenInfo = NULL;
return HB_FAILURE;
}
pArea->bTableType = hb_itemGetNI( pItem );
}
if( pArea->bLockType == 0 )
{
pItem = hb_itemPutNI( pItem, 0 );
if( SELF_INFO( ( AREAP ) pArea, DBI_LOCKSCHEME, pItem ) != HB_SUCCESS )
{
hb_itemRelease( pItem );
pArea->lpdbOpenInfo = NULL;
return HB_FAILURE;
}
pArea->bLockType = hb_itemGetNI( pItem );
if( pArea->bLockType == 0 )
{
pArea->bLockType = DB_DBFLOCK_CLIP;
}
}
if( pArea->bTableType == DB_DBF_VFP && !fRawBlob )
{
pArea->bMemoType = DB_MEMO_FPT;
}
else if( pArea->bMemoType == 0 )
{
/* get memo type */
pItem = hb_itemPutNI( pItem, 0 );
if( SELF_INFO( ( AREAP ) pArea, DBI_MEMOTYPE, pItem ) != HB_SUCCESS )
{
hb_itemRelease( pItem );
pArea->lpdbOpenInfo = NULL;
return HB_FAILURE;
}
pArea->bMemoType = ( BYTE ) hb_itemGetNI( pItem );
}
pArea->bCryptType = DB_CRYPT_NONE;
if( pItem )
hb_itemRelease( pItem );
if( pArea->uiFieldCount * sizeof( DBFFIELD ) + sizeof( DBFHEADER ) +
( pArea->bTableType == DB_DBF_VFP ? 1 : 2 ) > UINT16_MAX )
{
pError = hb_errNew();
hb_errPutGenCode( pError, EG_CREATE );
hb_errPutSubCode( pError, EDBF_DATAWIDTH );
hb_errPutDescription( pError, hb_langDGetErrorDesc( EG_CREATE ) );
hb_errPutFileName( pError, ( char * ) pCreateInfo->abName );
SELF_ERROR( ( AREAP ) pArea, pError );
hb_itemRelease( pError );
pArea->lpdbOpenInfo = NULL;
return HB_FAILURE;
}
if( !fRawBlob )
{
pError = NULL;
/* Try create */
do
{
if( pArea->fTemporary )
pArea->pDataFile = hb_fileCreateTempEx( szFileName, NULL, NULL, NULL, FC_NORMAL );
else
pArea->pDataFile = hb_fileExtOpen( szFileName, NULL,
FO_READWRITE | FO_EXCLUSIVE | FXO_TRUNCATE |
FXO_DEFAULTS | FXO_SHARELOCK | FXO_COPYNAME,
NULL, pError );
if( ! pArea->pDataFile )
{
if( !pError )
{
pError = hb_errNew();
hb_errPutGenCode( pError, EG_CREATE );
hb_errPutSubCode( pError, EDBF_CREATE_DBF );
hb_errPutDescription( pError, hb_langDGetErrorDesc( EG_CREATE ) );
hb_errPutFileName( pError, ( char * ) szFileName );
hb_errPutFlags( pError, EF_CANRETRY | EF_CANDEFAULT );
}
hb_errPutOsCode( pError, hb_fsError() );
fRetry = ( SELF_ERROR( ( AREAP ) pArea, pError ) == E_RETRY );
}
else
fRetry = FALSE;
} while( fRetry );
if( pError )
{
hb_itemRelease( pError );
}
if( ! pArea->pDataFile )
{
pArea->lpdbOpenInfo = NULL;
return HB_FAILURE;
}
}
pArea->szDataFileName = hb_strdup( ( char * ) szFileName );
ulSize = pArea->uiFieldCount * sizeof( DBFFIELD ) +
( pArea->bTableType == DB_DBF_VFP ? 1 : 2 );
if( pArea->uiFieldCount )
{
pBuffer = ( BYTE * ) hb_xgrab( ulSize + 1 );
memset( pBuffer, 0, ulSize );
}
else
{
pBuffer = NULL;
}
pThisField = ( DBFFIELD * ) pBuffer;
pArea->fHasMemo = fError = FALSE;
/* Size for deleted flag */
pArea->uiRecordLen = 1;
for( uiCount = 0; uiCount < pArea->uiFieldCount; uiCount++ )
{
LPFIELD pField = pArea->lpFields + uiCount;
hb_strncpy( ( char * ) pThisField->bName,
hb_dynsymName( ( PHB_DYNS ) pField->sym ), sizeof( pThisField->bName ) - 1 );
pArea->pFieldOffset[ uiCount ] = pArea->uiRecordLen;
/* field offset */
if( pArea->bTableType == DB_DBF_VFP )
HB_PUT_LE_UINT16( pThisField->bReserved1, pArea->uiRecordLen );
switch( pField->uiType )
{
case HB_FT_STRING:
pThisField->bType = 'C';
pThisField->bLen = ( BYTE ) pField->uiLen;
pThisField->bDec = ( BYTE ) ( pField->uiLen >> 8 );
pArea->uiRecordLen += pField->uiLen;
break;
case HB_FT_LOGICAL:
pThisField->bType = 'L';
pThisField->bLen = 1;
pArea->uiRecordLen++;
break;
case HB_FT_MEMO:
pThisField->bType = 'M';
if( pField->uiLen != 4 || pArea->bMemoType == DB_MEMO_SMT )
pField->uiLen = 10;
pThisField->bLen = ( BYTE ) pField->uiLen;
pArea->uiRecordLen += pField->uiLen;
pArea->fHasMemo = TRUE;
break;
case HB_FT_BLOB:
pThisField->bType = 'W';
if( pField->uiLen != 4 || pArea->bMemoType == DB_MEMO_SMT )
pField->uiLen = 10;
pThisField->bLen = ( BYTE ) pField->uiLen;
pThisField->bFieldFlags = HB_FF_BINARY;
pArea->uiRecordLen += pField->uiLen;
pArea->fHasMemo = TRUE;
break;
case HB_FT_IMAGE:
pThisField->bType = 'P';
if( pField->uiLen != 4 || pArea->bMemoType == DB_MEMO_SMT )
pField->uiLen = 10;
pThisField->bLen = ( BYTE ) pField->uiLen;
pThisField->bFieldFlags = HB_FF_BINARY;
pArea->uiRecordLen += pField->uiLen;
pArea->fHasMemo = TRUE;
break;
case HB_FT_OLE:
pThisField->bType = 'G';
if( pField->uiLen != 4 || pArea->bMemoType == DB_MEMO_SMT )
pField->uiLen = 10;
pThisField->bLen = ( BYTE ) pField->uiLen;
pThisField->bFieldFlags = HB_FF_BINARY;
pArea->uiRecordLen += pField->uiLen;
pArea->fHasMemo = TRUE;
break;
case HB_FT_ANY:
pThisField->bType = 'V';
if( pField->uiLen < 3 || pField->uiLen == 5 )
{
pField->uiLen = 6;
}
pThisField->bLen = ( BYTE ) pField->uiLen;
pThisField->bDec = ( BYTE ) ( pField->uiLen >> 8 );
pArea->uiRecordLen += pField->uiLen;
if( pThisField->bLen >= 6 )
{
pArea->uiMemoVersion = DB_MEMOVER_SIX;
pArea->fHasMemo = TRUE;
}
/*
if( pArea->bTableType == DB_DBF_VFP )
fError = TRUE;
*/
break;
case HB_FT_DATE:
pThisField->bType = 'D';
if( pField->uiLen != 3 && pField->uiLen != 4 )
{
pField->uiLen = pThisField->bLen = 8;
}
pThisField->bLen = ( BYTE ) pField->uiLen;
pArea->uiRecordLen += pField->uiLen;
break;
case HB_FT_LONG:
pThisField->bType = 'N';
pThisField->bLen = ( BYTE ) pField->uiLen;
pThisField->bDec = ( BYTE ) pField->uiDec;
pArea->uiRecordLen += pField->uiLen;
break;
case HB_FT_FLOAT:
pThisField->bType = 'F';
pThisField->bLen = ( BYTE ) pField->uiLen;
pThisField->bDec = ( BYTE ) pField->uiDec;
pArea->uiRecordLen += pField->uiLen;
break;
case HB_FT_DOUBLE:
case HB_FT_CURDOUBLE:
pThisField->bType = 'B';
pField->uiLen = 8;
pThisField->bLen = ( BYTE ) pField->uiLen;
pThisField->bDec = ( BYTE ) pField->uiDec;
pArea->uiRecordLen += pField->uiLen;
break;
case HB_FT_INTEGER:
case HB_FT_CURRENCY:
pThisField->bType = ( pArea->bTableType == DB_DBF_VFP &&
pField->uiLen == 8 && pField->uiDec == 4 ) ?
'Y' : 'I';
if( ( pField->uiLen > 4 && pField->uiLen != 8 ) ||
pField->uiLen == 0 )
{
pField->uiLen = 4;
}
pThisField->bLen = ( BYTE ) pField->uiLen;
pThisField->bDec = ( BYTE ) pField->uiDec;
pArea->uiRecordLen += pField->uiLen;
break;
case HB_FT_TIME:
pThisField->bType = 'T';
pField->uiLen = 4;
pThisField->bLen = ( BYTE ) pField->uiLen;
pArea->uiRecordLen += pField->uiLen;
break;
case HB_FT_DAYTIME:
pThisField->bType = pArea->bTableType == DB_DBF_VFP ? 'T' : '@';
pField->uiLen = 8;
pThisField->bLen = ( BYTE ) pField->uiLen;
pThisField->bFieldFlags = HB_FF_BINARY;
pArea->uiRecordLen += pField->uiLen;
break;
case HB_FT_MODTIME:
pThisField->bType = '=';
pField->uiLen = 8;
pThisField->bLen = ( BYTE ) pField->uiLen;
pArea->uiRecordLen += pField->uiLen;
pArea->fModStamp = TRUE;
break;
case HB_FT_ROWVER:
pThisField->bType = '^';
pField->uiLen = 8;
pThisField->bLen = ( BYTE ) pField->uiLen;
HB_PUT_LE_UINT32( pThisField->bCounter, 1 );
pThisField->bStep = 1;
pArea->uiRecordLen += pField->uiLen;
pArea->fModStamp = TRUE;
break;
case HB_FT_AUTOINC:
pThisField->bType = '+';
pField->uiLen = 4;
pThisField->bLen = ( BYTE ) pField->uiLen;
HB_PUT_LE_UINT32( pThisField->bCounter, 1 );
pThisField->bStep = 1;
pArea->uiRecordLen += pField->uiLen;
pArea->fAutoInc = TRUE;
break;
default:
fError = TRUE;
}
if( fError )
{
hb_xfree( pBuffer );
SELF_CLOSE( ( AREAP ) pArea );
pError = hb_errNew();
hb_errPutGenCode( pError, EG_CREATE );
hb_errPutSubCode( pError, EDBF_DATATYPE );
hb_errPutDescription( pError, hb_langDGetErrorDesc( EG_CREATE ) );
hb_errPutFileName( pError, ( char * ) pCreateInfo->abName );
SELF_ERROR( ( AREAP ) pArea, pError );
hb_itemRelease( pError );
pArea->lpdbOpenInfo = NULL;
return HB_FAILURE;
}
pThisField++;
}
pArea->fShared = FALSE; /* pCreateInfo->fShared */
pArea->fReadonly = FALSE; /* pCreateInfo->fReadonly */
pArea->ulRecCount = 0;
pArea->uiHeaderLen = ( USHORT ) ( sizeof( DBFHEADER ) + ulSize );
if( fRawBlob )
{
pArea->fHasMemo = TRUE;
}
if( !pArea->fHasMemo )
{
pArea->bMemoType = DB_MEMO_NONE;
}
pArea->uiMemoBlockSize = 0;
#ifndef HB_CDP_SUPPORT_OFF
if( pCreateInfo->cdpId )
{
pArea->cdPage = hb_cdpFind( (char *) pCreateInfo->cdpId );
if( !pArea->cdPage )
pArea->cdPage = hb_vmCDP();
}
else
pArea->cdPage = hb_vmCDP();
#endif
pItem = hb_itemNew( NULL );
if( SELF_RDDINFO( SELF_RDDNODE( pArea ), RDDI_PENDINGPASSWORD,
pCreateInfo->ulConnection, pItem ) == HB_SUCCESS )
{
if( hb_dbfPasswordSet( pArea, pItem, FALSE ) )
pArea->fTableEncrypted = TRUE;
}
else
{
hb_itemClear( pItem );
if( SELF_RDDINFO( SELF_RDDNODE( pArea ), RDDI_PASSWORD,
pCreateInfo->ulConnection, pItem ) == HB_SUCCESS )
{
if( hb_dbfPasswordSet( pArea, pItem, FALSE ) )
pArea->fTableEncrypted = TRUE;
}
}
hb_itemRelease( pItem );
if( !fRawBlob )
{
/* Force write new header */
pArea->fUpdateHeader = TRUE;
/* Write header */
errCode = SELF_WRITEDBHEADER( ( AREAP ) pArea );
if( errCode != HB_SUCCESS )
{
hb_xfree( pBuffer );
SELF_CLOSE( ( AREAP ) pArea );
pArea->lpdbOpenInfo = NULL;
return errCode;
}
/* Write fields and eof mark */
if( pArea->bTableType == DB_DBF_VFP )
pBuffer[ ulSize - 1 ] = '\r';
else
{
pBuffer[ ulSize - 2 ] = '\r';
pBuffer[ ulSize - 1 ] = '\0';
}
pBuffer[ ulSize ] = ' ';
if( hb_fileWriteAt( pArea->pDataFile, pBuffer, ulSize + 1,
sizeof( DBFHEADER ) ) != ulSize + 1 )
{
/* TODO: add RT error */
hb_xfree( pBuffer );
SELF_CLOSE( ( AREAP ) pArea );
pArea->lpdbOpenInfo = NULL;
return HB_FAILURE;
}
pArea->fDataFlush = TRUE;
hb_xfree( pBuffer );
}
/* Create memo file */
if( pArea->fHasMemo )
{
pFileName = hb_fsFNameSplit( ( char * ) szFileName );
pFileName->szExtension = NULL;
hb_fsFNameMerge( ( char * ) szFileName, pFileName );
hb_xfree( pFileName );
pCreateInfo->abName = szFileName;
errCode = SELF_CREATEMEMFILE( ( AREAP ) pArea, pCreateInfo );
}
/* If successful call SUPER_CREATE to finish system jobs */
if( errCode == HB_SUCCESS )
{
errCode = SUPER_CREATE( ( AREAP ) pArea, pCreateInfo );
}
if( errCode != HB_SUCCESS )
{
SELF_CLOSE( ( AREAP ) pArea );
pArea->lpdbOpenInfo = NULL;
return errCode;
}
/* Alloc buffer */
pArea->pRecord = ( BYTE * ) hb_xgrab( pArea->uiRecordLen );
pArea->fValidBuffer = FALSE;
/* Update the number of record for corrupted headers */
pArea->ulRecCount = hb_dbfCalcRecCount( pArea );
pArea->lpdbOpenInfo = NULL;
/* Position cursor at the first record */
return SELF_GOTOP( ( AREAP ) pArea );
}
/*
* Retrieve information about the current driver.
*/
static HB_ERRCODE hb_dbfInfo( DBFAREAP pArea, USHORT uiIndex, PHB_ITEM pItem )
{
HB_ERRCODE errCode = HB_SUCCESS;
HB_TRACE(HB_TR_DEBUG, ("hb_dbfInfo(%p, %hu, %p)", pArea, uiIndex, pItem));
switch( uiIndex )
{
case DBI_ISDBF:
case DBI_CANPUTREC:
hb_itemPutL( pItem, TRUE );
break;
case DBI_GETHEADERSIZE:
hb_itemPutNL( pItem, pArea->uiHeaderLen );
break;
case DBI_LASTUPDATE:
hb_itemPutD( pItem, 1900 + pArea->dbfHeader.bYear,
pArea->dbfHeader.bMonth,
pArea->dbfHeader.bDay );
break;
case DBI_GETRECSIZE:
hb_itemPutNL( pItem, pArea->uiRecordLen );
break;
case DBI_GETLOCKARRAY:
hb_dbfGetLockArray( pArea, pItem );
break;
case DBI_TABLEEXT:
hb_itemClear( pItem );
return SELF_RDDINFO( SELF_RDDNODE( pArea ), RDDI_TABLEEXT, 0, pItem );
case DBI_FULLPATH:
hb_itemPutC( pItem, pArea->szDataFileName);
break;
case DBI_MEMOTYPE:
hb_itemPutNI( pItem, DB_MEMO_NONE );
break;
case DBI_TABLETYPE:
if( !pArea->pDataFile )
{
hb_itemClear( pItem );
return SELF_RDDINFO( SELF_RDDNODE( pArea ), RDDI_TABLETYPE, 0, pItem );
}
hb_itemPutNI( pItem, pArea->bTableType );
break;
case DBI_FILEHANDLE:
hb_itemPutNInt( pItem, ( HB_NHANDLE ) hb_fileHandle( pArea->pDataFile ) );
break;
case DBI_MEMOHANDLE:
hb_itemPutNInt( pItem, ( HB_NHANDLE ) hb_fileHandle( pArea->pMemoFile ) );
break;
case DBI_SHARED:
{
BOOL fShared = pArea->fShared;
if( HB_IS_LOGICAL( pItem ) )
{
pArea->fShared = hb_itemGetL( pItem );
}
hb_itemPutL( pItem, fShared );
break;
}
case DBI_ISFLOCK:
hb_itemPutL( pItem, pArea->fFLocked );
break;
case DBI_ISREADONLY:
hb_itemPutL( pItem, pArea->fReadonly );
break;
case DBI_ISTEMPORARY:
if( !pArea->pDataFile && !pArea->pMemoFile && HB_IS_LOGICAL( pItem ) )
pArea->fTemporary = hb_itemGetL( pItem );
else
hb_itemPutL( pItem, pArea->fTemporary );
break;
case DBI_VALIDBUFFER:
hb_itemPutL( pItem, pArea->fValidBuffer );
break;
case DBI_POSITIONED:
hb_itemPutL( pItem, pArea->fPositioned );
break;
case DBI_ISENCRYPTED:
hb_itemPutL( pItem, pArea->fTableEncrypted );
break;
case DBI_DECRYPT:
hb_dbfTableCrypt( pArea, pItem, FALSE );
hb_itemPutL( pItem, !pArea->fTableEncrypted );
break;
case DBI_ENCRYPT:
hb_dbfTableCrypt( pArea, pItem, TRUE );
hb_itemPutL( pItem, pArea->fTableEncrypted );
break;
case DBI_LOCKCOUNT:
hb_itemPutNL( pItem, pArea->ulNumLocksPos );
break;
case DBI_LOCKOFFSET:
{
HB_FOFFSET ulPos, ulFlSize, ulRlSize;
int iDir;
hb_dbfLockData( pArea, &ulPos, &ulFlSize, &ulRlSize, &iDir );
hb_itemPutNInt( pItem, ulPos );
break;
}
case DBI_LOCKSCHEME:
{
int iScheme = hb_itemGetNI( pItem );
if( pArea->bLockType )
{
hb_itemPutNI( pItem, pArea->bLockType );
}
else
{
hb_itemClear( pItem );
errCode = SELF_RDDINFO( SELF_RDDNODE( pArea ), RDDI_LOCKSCHEME, 0, pItem );
}
switch( iScheme )
{
case DB_DBFLOCK_CLIP:
case DB_DBFLOCK_CL53:
case DB_DBFLOCK_CL53EXT:
case DB_DBFLOCK_VFP:
#ifndef HB_LONG_LONG_OFF
case DB_DBFLOCK_XHB64:
#endif
pArea->bLockType = ( BYTE ) iScheme;
}
break;
}
case DBI_ROLLBACK:
if( pArea->fRecordChanged )
{
if( pArea->fAppend )
{
hb_dbfSetBlankRecord( pArea, HB_BLANK_ROLLBACK );
pArea->fDeleted = FALSE;
}
else
{
pArea->fRecordChanged = pArea->fValidBuffer = FALSE;
}
}
break;
case DBI_PASSWORD:
hb_dbfPasswordSet( pArea, pItem, FALSE );
break;
case DBI_TRIGGER:
if( HB_IS_LOGICAL( pItem ) )
pArea->fTrigger = pArea->pTriggerSym && hb_itemGetL( pItem );
else
{
PHB_DYNS pTriggerSym = pArea->pTriggerSym;
if( HB_IS_STRING( pItem ) )
hb_dbfTriggerSet( pArea, pItem );
hb_itemPutC( pItem, pTriggerSym ? hb_dynsymName( pTriggerSym ) : NULL );
}
break;
case DBI_OPENINFO:
hb_itemPutPtr( pItem, pArea->lpdbOpenInfo );
break;
case DBI_DIRTYREAD:
{
BOOL fDirty = HB_DIRTYREAD( pArea );
if( HB_IS_LOGICAL( pItem ) )
pArea->uiDirtyRead = hb_itemGetL( pItem ) ?
HB_IDXREAD_DIRTY : HB_IDXREAD_CLEAN;
else if( !HB_IS_NIL( pItem ) )
pArea->uiDirtyRead = HB_IDXREAD_DEFAULT;
hb_itemPutL( pItem, fDirty );
break;
}
case DBI_DB_VERSION:
case DBI_RDD_VERSION:
{
char szBuf[ 64 ];
int iSub = hb_itemGetNI( pItem );
if( iSub == 1 )
hb_snprintf( szBuf, sizeof( szBuf ), "%d.%d (%s)", 0, 1, "DBF" );
else if( iSub == 2 )
hb_snprintf( szBuf, sizeof( szBuf ), "%d.%d (%s:%d)", 0, 1, "DBF", pArea->rddID );
/*
hb_snprintf( szBuf, sizeof( szBuf ), "%d.%d (%s:%d)", 0, 1, pArea->pRddNode->szName, pArea->rddID );
*/
else
hb_snprintf( szBuf, sizeof( szBuf ), "%d.%d", 0, 1 );
hb_itemPutC( pItem, szBuf );
break;
}
default:
return SUPER_INFO( ( AREAP ) pArea, uiIndex, pItem );
}
return errCode;
}
/*
* Retrieve information about a raw
*/
static HB_ERRCODE hb_dbfRecInfo( DBFAREAP pArea, PHB_ITEM pRecID, USHORT uiInfoType, PHB_ITEM pInfo )
{
ULONG ulRecNo = hb_itemGetNL( pRecID ), ulPrevRec = 0;
HB_ERRCODE errResult = HB_SUCCESS;
BOOL bDeleted;
HB_TRACE(HB_TR_DEBUG, ("hb_dbfRecInfo(%p, %p, %hu, %p)", pArea, pRecID, uiInfoType, pInfo));
if( pArea->lpdbPendingRel )
{
if( SELF_FORCEREL( ( AREAP ) pArea ) != HB_SUCCESS )
return HB_FAILURE;
}
if( ulRecNo == 0 )
{
ulRecNo = pArea->ulRecNo;
}
else if( ulRecNo != pArea->ulRecNo )
{
switch( uiInfoType )
{
case DBRI_DELETED:
case DBRI_ENCRYPTED:
case DBRI_RAWRECORD:
case DBRI_RAWMEMOS:
case DBRI_RAWDATA:
ulPrevRec = pArea->ulRecNo;
errResult = SELF_GOTO( ( AREAP ) pArea, ulRecNo );
if( errResult != HB_SUCCESS )
return errResult;
break;
}
}
switch( uiInfoType )
{
case DBRI_DELETED:
errResult = SELF_DELETED( ( AREAP ) pArea, &bDeleted );
if( errResult == HB_SUCCESS )
hb_itemPutL( pInfo, bDeleted );
break;
case DBRI_LOCKED:
/* Clipper also checks only fShared and RLOCK and ignore FLOCK */
hb_itemPutL( pInfo, !pArea->fShared || /* pArea->fFLocked || */
hb_dbfIsLocked( pArea, ulRecNo ) );
break;
case DBRI_RECSIZE:
hb_itemPutNL( pInfo, pArea->uiRecordLen );
break;
case DBRI_RECNO:
hb_itemPutNL( pInfo, ulRecNo );
break;
case DBRI_UPDATED:
hb_itemPutL( pInfo, ulRecNo == pArea->ulRecNo && pArea->fRecordChanged );
break;
case DBRI_ENCRYPTED:
if( !pArea->fValidBuffer && !hb_dbfReadRecord( pArea ) )
errResult = HB_FAILURE;
else
hb_itemPutL( pInfo, pArea->fEncrypted );
break;
case DBRI_RAWRECORD:
if( !pArea->fValidBuffer && !hb_dbfReadRecord( pArea ) )
errResult = HB_FAILURE;
else
hb_itemPutCL( pInfo, ( char * ) pArea->pRecord, pArea->uiRecordLen );
break;
case DBRI_RAWMEMOS:
case DBRI_RAWDATA:
{
USHORT uiFields;
BYTE *pResult;
ULONG ulLength, ulLen;
if( !pArea->fValidBuffer && !hb_dbfReadRecord( pArea ) )
{
errResult = HB_FAILURE;
break;
}
ulLength = uiInfoType == DBRI_RAWDATA ? pArea->uiRecordLen : 0;
pResult = ( BYTE * ) hb_xgrab( ulLength + 1 );
if( ulLength )
{
memcpy( pResult, pArea->pRecord, ulLength );
}
if( pArea->fHasMemo )
{
for( uiFields = 0; uiFields < pArea->uiFieldCount; uiFields++ )
{
if( pArea->lpFields[ uiFields ].uiType == HB_FT_MEMO ||
pArea->lpFields[ uiFields ].uiType == HB_FT_IMAGE ||
pArea->lpFields[ uiFields ].uiType == HB_FT_BLOB ||
pArea->lpFields[ uiFields ].uiType == HB_FT_OLE )
{
errResult = SELF_GETVALUE( ( AREAP ) pArea, uiFields + 1, pInfo );
if( errResult != HB_SUCCESS )
break;
ulLen = hb_itemGetCLen( pInfo );
if( ulLen > 0 )
{
pResult = ( BYTE * ) hb_xrealloc( pResult, ulLength + ulLen + 1 );
memcpy( pResult + ulLength, hb_itemGetCPtr( pInfo ), ulLen );
ulLength += ulLen;
}
}
}
}
hb_itemPutCLPtr( pInfo, ( char * ) pResult, ulLength );
break;
}
default:
errResult = SUPER_RECINFO( ( AREAP ) pArea, pRecID, uiInfoType, pInfo );
}
if( ulPrevRec != 0 )
{
if( SELF_GOTO( ( AREAP ) pArea, ulPrevRec ) != HB_SUCCESS &&
errResult == HB_SUCCESS )
errResult = HB_FAILURE;
}
return errResult;
}
/*
* Clear the WorkArea for use.
*/
static HB_ERRCODE hb_dbfNewArea( DBFAREAP pArea )
{
HB_TRACE(HB_TR_DEBUG, ("hb_dbfNewArea(%p)", pArea));
if( SUPER_NEW( ( AREAP ) pArea ) == HB_FAILURE )
return HB_FAILURE;
pArea->pDataFile = pArea->pMemoFile = pArea->pMemoTmpFile = NULL;
pArea->fDataFlush = pArea->fMemoFlush = FALSE;
/* Index dirty read flag initialized to global RDD setting */
pArea->uiDirtyRead = HB_IDXREAD_DEFAULT;
/* Size for deleted records flag */
pArea->uiRecordLen = 1;
return HB_SUCCESS;
}
/*
* Open a data store in the WorkArea.
*/
static HB_ERRCODE hb_dbfOpen( DBFAREAP pArea, LPDBOPENINFO pOpenInfo )
{
HB_ERRCODE errCode;
USHORT uiFlags, uiFields, uiCount, uiSkip;
ULONG ulSize;
BOOL fRetry, fRawBlob;
PHB_ITEM pError, pItem;
PHB_FNAME pFileName;
BYTE * pBuffer;
LPDBFFIELD pField;
DBFIELDINFO dbFieldInfo;
BYTE szFileName[ _POSIX_PATH_MAX + 1 ];
char szAlias[ HB_RDD_MAX_ALIAS_LEN + 1 ];
HB_TRACE(HB_TR_DEBUG, ("hb_dbfOpen(%p, %p)", pArea, pOpenInfo));
pArea->lpdbOpenInfo = pOpenInfo;
pItem = hb_itemNew( NULL );
if( SELF_RDDINFO( SELF_RDDNODE( pArea ), RDDI_PENDINGTRIGGER,
pOpenInfo->ulConnection, pItem ) == HB_SUCCESS )
{
if( HB_IS_STRING( pItem ) )
hb_dbfTriggerSet( pArea, pItem );
}
if( !pArea->fTrigger )
{
if( SELF_RDDINFO( SELF_RDDNODE( pArea ), RDDI_TRIGGER,
pOpenInfo->ulConnection, pItem ) == HB_SUCCESS )
{
if( HB_IS_STRING( pItem ) )
hb_dbfTriggerSet( pArea, pItem );
}
}
if( pArea->fTrigger )
{
hb_itemPutC( pItem, ( char * ) pOpenInfo->abName );
if( !hb_dbfTriggerDo( pArea, EVENT_PREUSE, 0, pItem ) )
{
hb_itemRelease( pItem );
pArea->lpdbOpenInfo = NULL;
return HB_FAILURE;
}
hb_strncpy( ( char * ) szFileName, hb_itemGetCPtr( pItem ), sizeof( szFileName ) - 1 );
}
else
hb_strncpy( ( char * ) szFileName, ( char * ) pOpenInfo->abName, sizeof( szFileName ) - 1 );
if( !pArea->bLockType )
{
hb_itemClear( pItem );
if( SELF_INFO( ( AREAP ) pArea, DBI_LOCKSCHEME, pItem ) != HB_SUCCESS )
{
hb_itemRelease( pItem );
pArea->lpdbOpenInfo = NULL;
return HB_FAILURE;
}
pArea->bLockType = hb_itemGetNI( pItem );
if( !pArea->bLockType )
pArea->bLockType = DB_DBFLOCK_CLIP;
}
#ifndef HB_CDP_SUPPORT_OFF
if( pOpenInfo->cdpId )
{
pArea->cdPage = hb_cdpFind( (char *) pOpenInfo->cdpId );
if( !pArea->cdPage )
pArea->cdPage = hb_vmCDP();
}
else
pArea->cdPage = hb_vmCDP();
#endif
pArea->fShared = pOpenInfo->fShared;
pArea->fReadonly = pOpenInfo->fReadonly;
/* Force exclusive mode
* 0: AUTOSHARE disabled.
* 1: AUTOSHARE enabled.
* 2: force exclusive mode.
* */
if( hb_setGetAutoShare() == 2 )
pArea->fShared = FALSE;
uiFlags = (pArea->fReadonly ? FO_READ : FO_READWRITE) |
(pArea->fShared ? FO_DENYNONE : FO_EXCLUSIVE);
pError = NULL;
pFileName = hb_fsFNameSplit( ( char * ) szFileName );
/* Add default file name extension if necessary */
if( ! pFileName->szExtension && hb_setGetDefExtension() )
{
hb_itemClear( pItem );
if( SELF_INFO( ( AREAP ) pArea, DBI_TABLEEXT, pItem ) != HB_SUCCESS )
{
hb_xfree( pFileName );
hb_itemRelease( pItem );
pArea->lpdbOpenInfo = NULL;
return HB_FAILURE;
}
pFileName->szExtension = hb_itemGetCPtr( pItem );
hb_fsFNameMerge( ( char * ) szFileName, pFileName );
}
/* Create default alias if necessary */
if( !pOpenInfo->atomAlias && pFileName->szName )
{
hb_strncpyUpperTrim( szAlias, pFileName->szName, sizeof( szAlias ) - 1 );
pOpenInfo->atomAlias = ( BYTE * ) szAlias;
}
hb_xfree( pFileName );
hb_itemClear( pItem );
fRawBlob = SELF_RDDINFO( SELF_RDDNODE( pArea ), RDDI_BLOB_SUPPORT, pOpenInfo->ulConnection, pItem ) == HB_SUCCESS &&
hb_itemGetL( pItem );
hb_itemRelease( pItem );
if( fRawBlob )
{
uiFields = uiSkip = 0;
pBuffer = NULL;
pArea->fHasMemo = TRUE;
}
else
{
/* Try open */
do
{
pArea->pDataFile = hb_fileExtOpen( szFileName, NULL, uiFlags |
FXO_DEFAULTS | FXO_SHARELOCK | FXO_COPYNAME,
NULL, pError );
if( !pArea->pDataFile )
{
if( !pError )
{
pError = hb_errNew();
hb_errPutGenCode( pError, EG_OPEN );
hb_errPutSubCode( pError, EDBF_OPEN_DBF );
hb_errPutDescription( pError, hb_langDGetErrorDesc( EG_OPEN ) );
hb_errPutFileName( pError, ( char * ) szFileName );
hb_errPutFlags( pError, EF_CANRETRY | EF_CANDEFAULT );
}
hb_errPutOsCode( pError, hb_fsError() );
fRetry = ( SELF_ERROR( ( AREAP ) pArea, pError ) == E_RETRY );
}
else
fRetry = FALSE;
} while( fRetry );
if( pError )
{
hb_itemRelease( pError );
pError = NULL;
}
/* Exit if error */
if( !pArea->pDataFile )
{
SELF_CLOSE( ( AREAP ) pArea );
pArea->lpdbOpenInfo = NULL;
return HB_FAILURE;
}
/* Allocate only after succesfully open file */
pArea->szDataFileName = hb_strdup( ( char * ) szFileName );
/* Read file header and exit if error */
errCode = SELF_READDBHEADER( ( AREAP ) pArea );
if( errCode != HB_SUCCESS )
{
SELF_CLOSE( ( AREAP ) pArea );
pArea->lpdbOpenInfo = NULL;
return errCode;
}
/* Add fields */
uiSkip = 0;
uiFields = ( pArea->uiHeaderLen - sizeof( DBFHEADER ) ) / sizeof( DBFFIELD );
ulSize = ( ULONG ) uiFields * sizeof( DBFFIELD );
pBuffer = uiFields ? ( BYTE * ) hb_xgrab( ulSize ) : NULL;
/* Read fields and exit if error */
do
{
if( hb_fileReadAt( pArea->pDataFile, pBuffer, ulSize,
sizeof( DBFHEADER ) ) != ulSize )
{
errCode = HB_FAILURE;
if( !pError )
{
pError = hb_errNew();
hb_errPutGenCode( pError, EG_CORRUPTION );
hb_errPutSubCode( pError, EDBF_CORRUPT );
hb_errPutDescription( pError, hb_langDGetErrorDesc( EG_CORRUPTION ) );
hb_errPutFileName( pError, pArea->szDataFileName );
hb_errPutFlags( pError, EF_CANRETRY | EF_CANDEFAULT );
}
fRetry = ( SELF_ERROR( ( AREAP ) pArea, pError ) == E_RETRY );
}
else
{
errCode = HB_SUCCESS;
break;
}
} while( fRetry );
if( pError )
{
hb_itemRelease( pError );
}
/* Exit if error */
if( errCode != HB_SUCCESS )
{
if( pBuffer )
hb_xfree( pBuffer );
SELF_CLOSE( ( AREAP ) pArea );
pArea->lpdbOpenInfo = NULL;
return errCode;
}
/* some RDDs use the additional space in the header after field arrray
for private data we should check for 0x0D marker to not use this
data as fields description */
for( uiCount = 0; uiCount < uiFields; uiCount++ )
{
pField = ( LPDBFFIELD ) ( pBuffer + uiCount * sizeof( DBFFIELD ) );
if( pField->bName[ 0 ] == 0x0d )
{
uiFields = uiCount;
break;
}
else if( pArea->bTableType == DB_DBF_VFP &&
pField->bFieldFlags & 0x01 )
{
uiSkip++;
}
}
uiFields -= uiSkip;
}
/* CL5.3 allow to create and open DBFs without fields */
#ifdef HB_C52_STRICT
if( uiFields == 0 )
{
errCode = HB_FAILURE;
}
else
#endif
{
errCode = SELF_SETFIELDEXTENT( ( AREAP ) pArea, uiFields );
if( errCode != HB_SUCCESS )
{
SELF_CLOSE( ( AREAP ) pArea );
pArea->lpdbOpenInfo = NULL;
return errCode;
}
}
/* Clear dbFieldInfo structure */
memset( &dbFieldInfo, 0, sizeof( dbFieldInfo ) );
/* Size for deleted flag */
pArea->uiRecordLen = 1;
for( uiCount = 0; uiCount < uiFields + uiSkip; uiCount++ )
{
pField = ( LPDBFFIELD ) ( pBuffer + uiCount * sizeof( DBFFIELD ) );
dbFieldInfo.atomName = pField->bName;
dbFieldInfo.atomName[10] = '\0';
/* hb_strUpper( (char *) dbFieldInfo.atomName, 11 ); */
dbFieldInfo.uiLen = pField->bLen;
dbFieldInfo.uiDec = 0;
dbFieldInfo.uiTypeExtended = 0;
/* We cannot accept bFieldFlags as is because Clipper
* creates tables where this field is random so we have to
* try to guess the flags ourself. But if we know that table
* was created by VFP which uses field flags then we can
* retrive information from bFieldFlags.
*/
if( pArea->bTableType == DB_DBF_VFP )
dbFieldInfo.uiFlags = pField->bFieldFlags;
else
dbFieldInfo.uiFlags = 0;
switch( pField->bType )
{
case 'C':
dbFieldInfo.uiType = HB_FT_STRING;
dbFieldInfo.uiLen = pField->bLen + pField->bDec * 256;
break;
case 'L':
dbFieldInfo.uiType = HB_FT_LOGICAL;
dbFieldInfo.uiLen = 1;
break;
case 'D':
dbFieldInfo.uiType = HB_FT_DATE;
if( dbFieldInfo.uiLen != 3 && dbFieldInfo.uiLen != 4 )
dbFieldInfo.uiLen = 8;
break;
case 'I':
dbFieldInfo.uiType = HB_FT_INTEGER;
if( ( dbFieldInfo.uiLen > 4 && dbFieldInfo.uiLen != 8 ) ||
dbFieldInfo.uiLen == 0 )
dbFieldInfo.uiLen = 4;
dbFieldInfo.uiDec = pField->bDec;
break;
case 'Y':
dbFieldInfo.uiType = HB_FT_CURRENCY;
if( ( dbFieldInfo.uiLen > 4 && dbFieldInfo.uiLen != 8 ) ||
dbFieldInfo.uiLen == 0 )
dbFieldInfo.uiLen = 8;
dbFieldInfo.uiDec = pField->bDec;
break;
case '2':
case '4':
dbFieldInfo.uiType = HB_FT_INTEGER;
dbFieldInfo.uiLen = pField->bType - '0';
break;
case 'N':
dbFieldInfo.uiType = HB_FT_LONG;
dbFieldInfo.uiDec = pField->bDec;
/* DBASE documentation defines maximum numeric field size as 20
* but Clipper allows to create longer fields so I removed this
* limit, Druzus
*/
/*
if( pField->bLen > 20 )
errCode = HB_FAILURE;
*/
break;
case 'F':
dbFieldInfo.uiType = HB_FT_FLOAT;
dbFieldInfo.uiDec = pField->bDec;
/* See note above */
break;
case '8':
case 'B':
dbFieldInfo.uiType = HB_FT_DOUBLE;
dbFieldInfo.uiDec = pField->bDec;
if( dbFieldInfo.uiLen != 8 )
errCode = HB_FAILURE;
break;
/* types which are not supported by VM - mapped to different ones */
case 'T':
if( dbFieldInfo.uiLen == 8 )
dbFieldInfo.uiType = HB_FT_DAYTIME;
else if( dbFieldInfo.uiLen == 4 )
dbFieldInfo.uiType = HB_FT_TIME;
else
errCode = HB_FAILURE;
break;
case '@':
dbFieldInfo.uiType = HB_FT_DAYTIME;
if( dbFieldInfo.uiLen != 8 )
errCode = HB_FAILURE;
break;
case '=':
dbFieldInfo.uiType = HB_FT_MODTIME;
if( dbFieldInfo.uiLen != 8 )
errCode = HB_FAILURE;
pArea->fModStamp = TRUE;
break;
case '^':
dbFieldInfo.uiType = HB_FT_ROWVER;
if( dbFieldInfo.uiLen != 8 )
errCode = HB_FAILURE;
pArea->fModStamp = TRUE;
break;
case '+':
dbFieldInfo.uiType = HB_FT_AUTOINC;
if( dbFieldInfo.uiLen != 4 )
errCode = HB_FAILURE;
pArea->fAutoInc = TRUE;
break;
case 'Q':
dbFieldInfo.uiType = HB_FT_VARLENGTH;
dbFieldInfo.uiFlags |= HB_FF_BINARY;
break;
case 'V':
if( pArea->bTableType == DB_DBF_VFP )
{
dbFieldInfo.uiType = HB_FT_VARLENGTH;
}
else
{
dbFieldInfo.uiType = HB_FT_ANY;
if( dbFieldInfo.uiLen >= 6 )
{
pArea->uiMemoVersion = DB_MEMOVER_SIX;
pArea->fHasMemo = TRUE;
}
}
break;
case 'M':
dbFieldInfo.uiType = HB_FT_MEMO;
pArea->fHasMemo = TRUE;
break;
case 'P':
dbFieldInfo.uiType = HB_FT_IMAGE;
dbFieldInfo.uiFlags |= HB_FF_BINARY;
pArea->fHasMemo = TRUE;
break;
case 'W':
dbFieldInfo.uiType = HB_FT_BLOB;
dbFieldInfo.uiFlags |= HB_FF_BINARY;
pArea->fHasMemo = TRUE;
break;
case 'G':
dbFieldInfo.uiType = HB_FT_OLE;
dbFieldInfo.uiFlags |= HB_FF_BINARY;
pArea->fHasMemo = TRUE;
break;
case '0':
if( pArea->bTableType == DB_DBF_VFP && pField->bFieldFlags & 0x01 )
{
if( memcmp( dbFieldInfo.atomName, "_NullFlags", 10 ) == 0 )
{
/* TODO: NULLABLE and VARLENGTH support */
}
pArea->uiRecordLen += dbFieldInfo.uiLen;
continue;
}
default:
errCode = HB_FAILURE;
break;
}
/* Add field */
if( errCode == HB_SUCCESS )
errCode = SELF_ADDFIELD( ( AREAP ) pArea, &dbFieldInfo );
/* Exit if error */
if( errCode != HB_SUCCESS )
break;
}
if( pBuffer )
hb_xfree( pBuffer );
/* Exit if error */
if( errCode != HB_SUCCESS )
{
if( hb_vmRequestQuery() == 0 )
{
pError = hb_errNew();
hb_errPutGenCode( pError, EG_CORRUPTION );
hb_errPutSubCode( pError, EDBF_CORRUPT );
hb_errPutDescription( pError, hb_langDGetErrorDesc( EG_CORRUPTION ) );
hb_errPutFileName( pError, pArea->szDataFileName );
hb_errPutFlags( pError, EF_CANDEFAULT );
SELF_ERROR( ( AREAP ) pArea, pError );
hb_itemRelease( pError );
}
SELF_CLOSE( ( AREAP ) pArea );
pArea->lpdbOpenInfo = NULL;
return errCode;
}
pItem = hb_itemNew( NULL );
if( SELF_RDDINFO( SELF_RDDNODE( pArea ), RDDI_PENDINGPASSWORD,
pOpenInfo->ulConnection, pItem ) == HB_SUCCESS )
{
hb_dbfPasswordSet( pArea, pItem, FALSE );
}
else
{
hb_itemClear( pItem );
if( SELF_RDDINFO( SELF_RDDNODE( pArea ), RDDI_PASSWORD,
pOpenInfo->ulConnection, pItem ) == HB_SUCCESS )
{
hb_dbfPasswordSet( pArea, pItem, FALSE );
}
}
hb_itemRelease( pItem );
/* Open memo file if exists */
if( pArea->fHasMemo )
{
pFileName = hb_fsFNameSplit( ( char * ) szFileName );
pFileName->szExtension = NULL;
hb_fsFNameMerge( ( char * ) szFileName, pFileName );
hb_xfree( pFileName );
pOpenInfo->abName = szFileName;
errCode = SELF_OPENMEMFILE( ( AREAP ) pArea, pOpenInfo );
}
if( errCode == HB_SUCCESS )
{
/* If successful call SUPER_OPEN to finish system jobs */
errCode = SUPER_OPEN( ( AREAP ) pArea, pOpenInfo );
}
if( errCode != HB_SUCCESS )
{
SELF_CLOSE( ( AREAP ) pArea );
pArea->lpdbOpenInfo = NULL;
return HB_FAILURE;
}
/* Alloc buffer */
pArea->pRecord = ( BYTE * ) hb_xgrab( pArea->uiRecordLen );
pArea->fValidBuffer = FALSE;
/* Update the number of record for corrupted headers */
pArea->ulRecCount = hb_dbfCalcRecCount( pArea );
/* Position cursor at the first record */
errCode = SELF_GOTOP( ( AREAP ) pArea );
if( pArea->fTrigger )
hb_dbfTriggerDo( pArea, EVENT_POSTUSE, 0, NULL );
pArea->lpdbOpenInfo = NULL;
return errCode;
}
/*
* Retrieve the size of the WorkArea structure.
*/
static HB_ERRCODE hb_dbfStructSize( DBFAREAP pArea, USHORT * uiSize )
{
HB_TRACE(HB_TR_DEBUG, ("hb_dbfStrucSize(%p, %p)", pArea, uiSize));
HB_SYMBOL_UNUSED( pArea );
* uiSize = sizeof( DBFAREA );
return HB_SUCCESS;
}
/*
* Pack helper function called for each packed record
*/
static HB_ERRCODE hb_dbfPackRec( DBFAREAP pArea, ULONG ulRecNo, BOOL *fWritten )
{
HB_TRACE(HB_TR_DEBUG, ("hb_dbfPackRec(%p, %lu, %p)", pArea, ulRecNo, fWritten));
HB_SYMBOL_UNUSED( ulRecNo );
*fWritten = !pArea->fDeleted;
return HB_SUCCESS;
}
/*
* Remove records marked for deletion from a database.
*/
static HB_ERRCODE hb_dbfPack( DBFAREAP pArea )
{
ULONG ulRecIn, ulRecOut, ulEvery, ulUserEvery;
PHB_ITEM pError, pBlock;
BOOL fWritten;
HB_TRACE(HB_TR_DEBUG, ("hb_dbfPack(%p)", pArea));
if( pArea->fReadonly )
{
pError = hb_errNew();
hb_errPutGenCode( pError, EG_READONLY );
hb_errPutDescription( pError, hb_langDGetErrorDesc( EG_READONLY ) );
hb_errPutSubCode( pError, EDBF_READONLY );
SELF_ERROR( ( AREAP ) pArea, pError );
hb_itemRelease( pError );
return HB_FAILURE;
}
if( pArea->fShared )
{
pError = hb_errNew();
hb_errPutGenCode( pError, EG_SHARED );
hb_errPutDescription( pError, hb_langDGetErrorDesc( EG_SHARED ) );
hb_errPutSubCode( pError, EDBF_SHARED );
SELF_ERROR( ( AREAP ) pArea, pError );
hb_itemRelease( pError );
return HB_FAILURE;
}
if( pArea->fTrigger )
{
if( !hb_dbfTriggerDo( pArea, EVENT_PACK, 0, NULL ) )
return HB_FAILURE;
}
if( SELF_GOCOLD( ( AREAP ) pArea ) != HB_SUCCESS )
return HB_FAILURE;
/* This is bad hack but looks that people begins to use it :-(
* so I'll add workaround to make it m ore safe
*/
if( pArea->valResult && HB_IS_ARRAY( pArea->valResult ) &&
hb_arrayLen( pArea->valResult ) == 2 &&
( hb_arrayGetType( pArea->valResult, 1 ) & HB_IT_BLOCK ) != 0 &&
( hb_arrayGetType( pArea->valResult, 2 ) & HB_IT_NUMERIC ) != 0 )
{
pBlock = hb_itemNew( NULL );
hb_arrayGet( pArea->valResult, 1, pBlock );
if( hb_arrayGetND( pArea->valResult, 2 ) >= 1 )
ulUserEvery = hb_arrayGetNL( pArea->valResult, 2 );
else
ulUserEvery = 1;
}
else
{
pBlock = NULL;
ulUserEvery = 0;
}
ulRecOut = ulEvery = 0;
ulRecIn = 1;
while( ulRecIn <= pArea->ulRecCount )
{
if( SELF_GOTO( ( AREAP ) pArea, ulRecIn ) != HB_SUCCESS )
{
if( pBlock )
hb_itemRelease( pBlock );
return HB_FAILURE;
}
if( !hb_dbfReadRecord( pArea ) )
{
if( pBlock )
hb_itemRelease( pBlock );
return HB_FAILURE;
}
/* Execute the Code Block */
if( pBlock )
{
if( ++ulEvery >= ulUserEvery )
{
ulEvery = 0;
if( SELF_EVALBLOCK( ( AREAP ) pArea, pBlock ) != HB_SUCCESS )
{
hb_itemRelease( pBlock );
return HB_FAILURE;
}
}
}
if( SELF_PACKREC( ( AREAP ) pArea, ulRecOut + 1, &fWritten ) != HB_SUCCESS )
{
if( pBlock )
hb_itemRelease( pBlock );
return HB_FAILURE;
}
if( fWritten )
{
ulRecOut++;
if( pArea->ulRecNo != ulRecOut || pArea->fRecordChanged )
{
pArea->ulRecNo = ulRecOut;
pArea->fRecordChanged = TRUE;
if( ! hb_dbfWriteRecord( pArea ) )
{
if( pBlock )
hb_itemRelease( pBlock );
return HB_FAILURE;
}
}
}
ulRecIn++;
}
/* Execute the Code Block for pending record */
if( pBlock )
{
if( ulEvery > 0 )
{
if( SELF_EVALBLOCK( ( AREAP ) pArea, pBlock ) != HB_SUCCESS )
{
hb_itemRelease( pBlock );
return HB_FAILURE;
}
}
hb_itemRelease( pBlock );
}
if( pArea->ulRecCount != ulRecOut )
{
pArea->ulRecCount = ulRecOut;
/* Force write new header */
pArea->fUpdateHeader = TRUE;
if( SELF_WRITEDBHEADER( ( AREAP ) pArea ) != HB_SUCCESS )
return HB_FAILURE;
}
return SELF_GOTO( ( AREAP ) pArea, 1 );
}
#ifndef HB_CDP_SUPPORT_OFF
void hb_dbfTranslateRec( DBFAREAP pArea, BYTE * pBuffer, PHB_CODEPAGE cdp_src, PHB_CODEPAGE cdp_dest )
{
USHORT uiIndex;
LPFIELD pField;
for( uiIndex = 0, pField = pArea->lpFields; uiIndex < pArea->uiFieldCount; uiIndex++, pField++ )
{
if( pField->uiType == HB_FT_STRING && ( pField->uiFlags && HB_FF_BINARY ) == 0 )
{
hb_cdpnTranslate( ( char * ) pBuffer + pArea->pFieldOffset[ uiIndex ], cdp_src, cdp_dest, pField->uiLen );
}
}
}
#endif
/*
* Physically reorder a database.
*/
static HB_ERRCODE hb_dbfSort( DBFAREAP pArea, LPDBSORTINFO pSortInfo )
{
ULONG ulRecNo;
USHORT uiCount;
BOOL bMoreRecords, bLimited, bValidRecord;
HB_ERRCODE uiError;
DBQUICKSORT dbQuickSort;
BYTE * pBuffer;
HB_TRACE(HB_TR_DEBUG, ("hb_dbfSort(%p, %p)", pArea, pSortInfo));
if( SELF_GOCOLD( ( AREAP ) pArea ) != HB_SUCCESS )
return HB_FAILURE;
if( !hb_dbQSortInit( &dbQuickSort, pSortInfo, pArea->uiRecordLen ) )
return HB_FAILURE;
uiError = HB_SUCCESS;
uiCount = 0;
pBuffer = dbQuickSort.pBuffer;
ulRecNo = 1;
if( pSortInfo->dbtri.dbsci.itmRecID )
{
uiError = SELF_GOTOID( ( AREAP ) pArea, pSortInfo->dbtri.dbsci.itmRecID );
bMoreRecords = bLimited = TRUE;
}
else if( pSortInfo->dbtri.dbsci.lNext )
{
ulRecNo = hb_itemGetNL( pSortInfo->dbtri.dbsci.lNext );
bLimited = TRUE;
bMoreRecords = ( ulRecNo > 0 );
}
else
{
if( !pSortInfo->dbtri.dbsci.itmCobWhile &&
( !pSortInfo->dbtri.dbsci.fRest ||
!hb_itemGetL( pSortInfo->dbtri.dbsci.fRest ) ) )
uiError = SELF_GOTOP( ( AREAP ) pArea );
bMoreRecords = TRUE;
bLimited = FALSE;
}
while( uiError == HB_SUCCESS && !pArea->fEof && bMoreRecords )
{
if( pSortInfo->dbtri.dbsci.itmCobWhile )
{
if( SELF_EVALBLOCK( ( AREAP ) pArea, pSortInfo->dbtri.dbsci.itmCobWhile ) != HB_SUCCESS )
{
hb_dbQSortExit( &dbQuickSort );
return HB_FAILURE;
}
bMoreRecords = hb_itemGetL( pArea->valResult );
}
if( bMoreRecords && pSortInfo->dbtri.dbsci.itmCobFor )
{
if( SELF_EVALBLOCK( ( AREAP ) pArea, pSortInfo->dbtri.dbsci.itmCobFor ) != HB_SUCCESS )
{
hb_dbQSortExit( &dbQuickSort );
return HB_FAILURE;
}
bValidRecord = hb_itemGetL( pArea->valResult );
}
else
bValidRecord = bMoreRecords;
if( bValidRecord )
{
if( uiCount == dbQuickSort.uiMaxRecords )
{
if( !hb_dbQSortAdvance( &dbQuickSort, uiCount ) )
{
hb_dbQSortExit( &dbQuickSort );
return HB_FAILURE;
}
pBuffer = dbQuickSort.pBuffer;
uiCount = 0;
}
/* Read record */
if( !pArea->fValidBuffer && !hb_dbfReadRecord( pArea ) )
{
hb_dbQSortExit( &dbQuickSort );
return HB_FAILURE;
}
/* Copy data */
memcpy( pBuffer, pArea->pRecord, pArea->uiRecordLen );
#ifndef HB_CDP_SUPPORT_OFF
if( pArea->cdPage != hb_vmCDP() )
{
hb_dbfTranslateRec( pArea, pBuffer, pArea->cdPage, hb_vmCDP() );
}
#endif
pBuffer += pArea->uiRecordLen;
uiCount++;
}
if( bMoreRecords && bLimited )
bMoreRecords = ( --ulRecNo > 0 );
if( bMoreRecords )
uiError = SELF_SKIP( ( AREAP ) pArea, 1 );
}
/* Copy last records */
if( uiCount > 0 )
{
if( !hb_dbQSortAdvance( &dbQuickSort, uiCount ) )
{
hb_dbQSortExit( &dbQuickSort );
return HB_FAILURE;
}
}
/* Sort records */
hb_dbQSortComplete( &dbQuickSort );
return HB_SUCCESS;
}
/*
* Copy one or more records from one WorkArea to another.
*/
static HB_ERRCODE hb_dbfTrans( DBFAREAP pArea, LPDBTRANSINFO pTransInfo )
{
HB_TRACE(HB_TR_DEBUG, ("hb_dbfTrans(%p, %p)", pArea, pTransInfo));
if( pTransInfo->uiFlags & DBTF_MATCH )
{
if( pArea->fHasMemo || pArea->cdPage != pTransInfo->lpaDest->cdPage )
pTransInfo->uiFlags &= ~DBTF_PUTREC;
else if( pArea->rddID == pTransInfo->lpaDest->rddID )
pTransInfo->uiFlags |= DBTF_PUTREC;
else
{
PHB_ITEM pPutRec = hb_itemPutL( NULL, FALSE );
if( SELF_INFO( ( AREAP ) pTransInfo->lpaDest, DBI_CANPUTREC, pPutRec ) != HB_SUCCESS )
{
hb_itemRelease( pPutRec );
return HB_FAILURE;
}
if( hb_itemGetL( pPutRec ) )
pTransInfo->uiFlags |= DBTF_PUTREC;
else
pTransInfo->uiFlags &= ~DBTF_PUTREC;
hb_itemRelease( pPutRec );
}
}
return SUPER_TRANS( ( AREAP ) pArea, pTransInfo );
}
/*
* Physically remove all records from data store.
*/
static HB_ERRCODE hb_dbfZap( DBFAREAP pArea )
{
PHB_ITEM pError;
HB_TRACE(HB_TR_DEBUG, ("hb_dbfZap(%p)", pArea));
if( pArea->fReadonly )
{
pError = hb_errNew();
hb_errPutGenCode( pError, EG_READONLY );
hb_errPutDescription( pError, hb_langDGetErrorDesc( EG_READONLY ) );
hb_errPutSubCode( pError, EDBF_READONLY );
SELF_ERROR( ( AREAP ) pArea, pError );
hb_itemRelease( pError );
return HB_FAILURE;
}
if( pArea->fShared )
{
pError = hb_errNew();
hb_errPutGenCode( pError, EG_SHARED );
hb_errPutDescription( pError, hb_langDGetErrorDesc( EG_SHARED ) );
hb_errPutSubCode( pError, EDBF_SHARED );
SELF_ERROR( ( AREAP ) pArea, pError );
hb_itemRelease( pError );
return HB_FAILURE;
}
if( pArea->fTrigger )
{
if( !hb_dbfTriggerDo( pArea, EVENT_ZAP, 0, NULL ) )
return HB_FAILURE;
}
if( SELF_GOCOLD( ( AREAP ) pArea ) != HB_SUCCESS )
return HB_FAILURE;
pArea->fUpdateHeader = TRUE;
pArea->ulRecCount = 0;
if( SELF_WRITEDBHEADER( ( AREAP ) pArea ) != HB_SUCCESS )
return HB_FAILURE;
if( SELF_GOTO( ( AREAP ) pArea, 0 ) != HB_SUCCESS )
return HB_FAILURE;
/* Zap memo file */
if( pArea->fHasMemo )
{
if( SELF_CREATEMEMFILE( ( AREAP ) pArea, NULL ) != HB_SUCCESS )
return HB_FAILURE;
}
return HB_SUCCESS;
}
/*
* Report end of relation.
*/
static HB_ERRCODE hb_dbfChildEnd( DBFAREAP pArea, LPDBRELINFO pRelInfo )
{
HB_ERRCODE uiError;
HB_TRACE(HB_TR_DEBUG, ("hb_dbfChildEnd(%p, %p)", pArea, pRelInfo));
if( pArea->lpdbPendingRel == pRelInfo )
uiError = SELF_FORCEREL( ( AREAP ) pArea );
else
uiError = HB_SUCCESS;
SUPER_CHILDEND( ( AREAP ) pArea, pRelInfo );
return uiError;
}
/*
* Report initialization of a relation.
*/
static HB_ERRCODE hb_dbfChildStart( DBFAREAP pArea, LPDBRELINFO pRelInfo )
{
HB_TRACE(HB_TR_DEBUG, ("hb_dbfChildStart(%p, %p)", pArea, pRelInfo));
if( SELF_CHILDSYNC( ( AREAP ) pArea, pRelInfo ) != HB_SUCCESS )
return HB_FAILURE;
return SUPER_CHILDSTART( ( AREAP ) pArea, pRelInfo );
}
/*
* Post a pending relational movement.
*/
static HB_ERRCODE hb_dbfChildSync( DBFAREAP pArea, LPDBRELINFO pRelInfo )
{
HB_TRACE(HB_TR_DEBUG, ("hb_dbfChildSync(%p, %p)", pArea, pRelInfo));
/*
* !!! The side effect of calling GOCOLD() inside CHILDSYNC() is
* evaluation of index expressions (index KEY and FOR condition)
* when the pArea is not the current one - it means that the
* used RDD has to set proper work area before eval.
* IMHO GOCOLD() could be safely removed from this place but I'm not
* sure it's Clipper compatible - I will have to check it, Druzus.
*/
/*
* I've checked in CL5.3 Technical Reference Guide that only
* FORCEREL() should ensure that the work area buffer is not HOT
* and then call RELEVAL() - I hope it describes the CL5.3 DBF* RDDs
* behavior so I replicate it - the GOCOLD() is moved from CHILDSYNC()
* to FORCEREL(), Druzus.
*/
/*
* After some cleanups, the core DBF* code can work with GOCOLD() here
* and in FORCEREL() without any problems. Because calling GOCOLD() in
* FORCEREL() may interacts with badly written users RDD which inherits
* from DBF* RDDs and/or user triggers then I decided to keep it here,
* Druzus.
*/
if( SELF_GOCOLD( ( AREAP ) pArea ) != HB_SUCCESS )
return HB_FAILURE;
pArea->lpdbPendingRel = pRelInfo;
if( pArea->lpdbRelations )
return SELF_SYNCCHILDREN( ( AREAP ) pArea );
return HB_SUCCESS;
}
/*
* Force relational seeks in the specified WorkArea.
*/
static HB_ERRCODE hb_dbfForceRel( DBFAREAP pArea )
{
HB_TRACE(HB_TR_DEBUG, ("hb_dbfForceRel(%p)", pArea));
if( pArea->lpdbPendingRel )
{
LPDBRELINFO lpdbPendingRel;
lpdbPendingRel = pArea->lpdbPendingRel;
pArea->lpdbPendingRel = NULL;
/* update buffers */
/* commented out - see comment above in CHILDSYNC() method, Druzus */
/* SELF_GOCOLD( ( AREAP ) pArea ); */
return SELF_RELEVAL( ( AREAP ) pArea, lpdbPendingRel );
}
return HB_SUCCESS;
}
/*
* Set the filter condition for the specified WorkArea.
*/
static HB_ERRCODE hb_dbfSetFilter( DBFAREAP pArea, LPDBFILTERINFO pFilterInfo )
{
HB_TRACE(HB_TR_DEBUG, ("hb_dbfSetFilter(%p, %p)", pArea, pFilterInfo));
if( pArea->lpdbPendingRel )
{
if( SELF_FORCEREL( ( AREAP ) pArea ) != HB_SUCCESS )
return HB_FAILURE;
}
return SUPER_SETFILTER( ( AREAP ) pArea, pFilterInfo );
}
/*
* Perform a network lowlevel lock in the specified WorkArea.
*/
static HB_ERRCODE hb_dbfRawLock( DBFAREAP pArea, USHORT uiAction, ULONG ulRecNo )
{
HB_ERRCODE uiErr = HB_SUCCESS;
HB_FOFFSET ulPos, ulFlSize, ulRlSize;
int iDir;
BOOL fLck;
HB_TRACE(HB_TR_DEBUG, ("hb_dbfRawLock(%p, %hu, %lu)", pArea, uiAction, ulRecNo));
if( pArea->fShared )
{
if( hb_dbfLockData( pArea, &ulPos, &ulFlSize, &ulRlSize, &iDir ) == HB_FAILURE )
return HB_FAILURE;
switch( uiAction )
{
case FILE_LOCK:
if( !pArea->fFLocked )
{
if( iDir < 0 )
fLck = hb_fileLock( pArea->pDataFile, ulPos - ulFlSize, ulFlSize, FL_LOCK );
else
fLck = hb_fileLock( pArea->pDataFile, ulPos + 1, ulFlSize, FL_LOCK );
if( !fLck )
uiErr = HB_FAILURE;
else
pArea->fFLocked = TRUE;
}
break;
case FILE_UNLOCK:
if( pArea->fFLocked )
{
if( iDir < 0 )
fLck = hb_fileLock( pArea->pDataFile, ulPos - ulFlSize, ulFlSize, FL_UNLOCK );
else
fLck = hb_fileLock( pArea->pDataFile, ulPos + 1, ulFlSize, FL_UNLOCK );
if( !fLck )
uiErr = HB_FAILURE;
pArea->fFLocked = FALSE;
}
break;
case REC_LOCK:
if( !pArea->fFLocked )
{
if( iDir < 0 )
fLck = hb_fileLock( pArea->pDataFile, ulPos - ulRecNo, ulRlSize, FL_LOCK );
else if( iDir == 2 )
fLck = hb_fileLock( pArea->pDataFile, ulPos + ( ulRecNo - 1 ) * pArea->uiRecordLen + pArea->uiHeaderLen, ulRlSize, FL_LOCK );
else
fLck = hb_fileLock( pArea->pDataFile, ulPos + ulRecNo, ulRlSize, FL_LOCK );
if( !fLck )
uiErr = HB_FAILURE;
}
break;
case REC_UNLOCK:
if( !pArea->fFLocked )
{
if( iDir < 0 )
fLck = hb_fileLock( pArea->pDataFile, ulPos - ulRecNo, ulRlSize, FL_UNLOCK );
else if( iDir == 2 )
fLck = hb_fileLock( pArea->pDataFile, ulPos + ( ulRecNo - 1 ) * pArea->uiRecordLen + pArea->uiHeaderLen, ulRlSize, FL_UNLOCK );
else
fLck = hb_fileLock( pArea->pDataFile, ulPos + ulRecNo, ulRlSize, FL_UNLOCK );
if( !fLck )
uiErr = HB_FAILURE;
}
break;
case APPEND_LOCK:
case HEADER_LOCK:
if( !pArea->fHeaderLocked )
{
for( ;; )
{
fLck = hb_fileLock( pArea->pDataFile, ulPos, 1, FL_LOCK | FLX_WAIT );
/* TODO: call special error handler (LOCKHANDLER) hiere if !fLck */
if( fLck )
break;
hb_releaseCPU();
}
if( !fLck )
uiErr = HB_FAILURE;
else
pArea->fHeaderLocked = TRUE;
}
break;
case APPEND_UNLOCK:
case HEADER_UNLOCK:
if( pArea->fHeaderLocked )
{
if( !hb_fileLock( pArea->pDataFile, ulPos, 1, FL_UNLOCK ) )
uiErr = HB_FAILURE;
pArea->fHeaderLocked = FALSE;
}
break;
}
}
return uiErr;
}
/*
* Perform a network lock in the specified WorkArea.
*/
static HB_ERRCODE hb_dbfLock( DBFAREAP pArea, LPDBLOCKINFO pLockInfo )
{
HB_TRACE(HB_TR_DEBUG, ("hb_dbfLock(%p, %p)", pArea, pLockInfo));
if( pArea->fShared )
{
switch( pLockInfo->uiMethod )
{
case DBLM_EXCLUSIVE:
return hb_dbfLockRecord( pArea, 0, &pLockInfo->fResult, TRUE );
case DBLM_MULTIPLE:
return hb_dbfLockRecord( pArea, hb_itemGetNL( pLockInfo->itmRecID ),
&pLockInfo->fResult, FALSE );
case DBLM_FILE:
return hb_dbfLockFile( pArea, &pLockInfo->fResult );
default:
pLockInfo->fResult = FALSE;
}
}
else
pLockInfo->fResult = TRUE;
return HB_SUCCESS;
}
/*
* Release network locks in the specified WorkArea.
*/
static HB_ERRCODE hb_dbfUnLock( DBFAREAP pArea, PHB_ITEM pRecNo )
{
HB_ERRCODE uiError;
ULONG ulRecNo;
HB_TRACE(HB_TR_DEBUG, ("dbfUnLock(%p, %p)", pArea, pRecNo));
ulRecNo = hb_itemGetNL( pRecNo );
uiError = HB_SUCCESS;
if( pArea->fShared )
{
if( pArea->ulNumLocksPos > 0 )
{
/* Unlock all records? */
if( ulRecNo == 0 )
uiError = hb_dbfUnlockAllRecords( pArea );
else if( hb_dbfIsLocked( pArea, ulRecNo ) )
uiError = hb_dbfUnlockRecord( pArea, ulRecNo );
}
if( pArea->fFLocked )
{
uiError = hb_dbfUnlockFile( pArea );
}
}
return uiError;
}
/*
* Create a memo file in the WorkArea.
*/
static HB_ERRCODE hb_dbfCreateMemFile( DBFAREAP pArea, LPDBOPENINFO pCreateInfo )
{
PHB_ITEM pError;
HB_TRACE(HB_TR_DEBUG, ("hb_dbfCreateMemFile(%p, %p)", pArea, pCreateInfo));
if( pCreateInfo )
{
pError = hb_errNew();
hb_errPutGenCode( pError, EG_CREATE );
hb_errPutSubCode( pError, EDBF_DATATYPE );
hb_errPutDescription( pError, hb_langDGetErrorDesc( EG_CREATE ) );
hb_errPutFileName( pError, ( char * ) pCreateInfo->abName );
SELF_ERROR( ( AREAP ) pArea, pError );
hb_itemRelease( pError );
}
pArea->fHasMemo = FALSE;
return HB_FAILURE;
}
/*
* BLOB2FILE - retrieve memo contents into file
*/
static HB_ERRCODE hb_dbfGetValueFile( DBFAREAP pArea, USHORT uiIndex, BYTE * szFile, USHORT uiMode )
{
USHORT uiError = HB_SUCCESS;
LPFIELD pField;
HB_TRACE(HB_TR_DEBUG, ("hb_dbfGetValueFile(%p, %hu, %s, %hu)", pArea, uiIndex, szFile, uiMode));
if( pArea->lpdbPendingRel )
{
if( SELF_FORCEREL( ( AREAP ) pArea ) != HB_SUCCESS )
return HB_FAILURE;
}
/* Read record */
if( !pArea->fValidBuffer && !hb_dbfReadRecord( pArea ) )
return HB_FAILURE;
if( --uiIndex >= pArea->uiFieldCount )
return HB_FAILURE;
pField = pArea->lpFields + uiIndex;
if( pField->uiType == HB_FT_STRING )
{
PHB_FILE pFile;
pFile = hb_fileExtOpen( szFile, NULL, FO_WRITE | FO_EXCLUSIVE |
FXO_DEFAULTS | FXO_SHARELOCK |
( uiMode == FILEGET_APPEND ? FXO_APPEND : FXO_TRUNCATE ),
NULL, NULL );
if( !pFile )
{
uiError = uiMode != FILEGET_APPEND ? EDBF_CREATE : EDBF_OPEN_DBF;
}
else
{
if( hb_fileWriteAt( pFile, pArea->pRecord + pArea->pFieldOffset[ uiIndex ],
pField->uiLen, hb_fileSize( pFile ) ) !=
( ULONG ) pField->uiLen )
{
uiError = EDBF_WRITE;
}
hb_fileClose( pFile );
}
}
else
{
uiError = EDBF_DATATYPE;
}
/* Exit if any error */
if( uiError != HB_SUCCESS )
{
PHB_ITEM pError = hb_errNew();
hb_errPutGenCode( pError, hb_dbfGetEGcode( uiError ) );
hb_errPutDescription( pError, hb_langDGetErrorDesc( hb_dbfGetEGcode( uiError ) ) );
hb_errPutSubCode( pError, uiError );
hb_errPutFlags( pError, EF_CANDEFAULT );
if( uiError != EDBF_DATATYPE )
{
hb_errPutOsCode( pError, hb_fsError() );
hb_errPutFileName( pError, ( char * ) szFile );
}
SELF_ERROR( ( AREAP ) pArea, pError );
hb_itemRelease( pError );
return HB_FAILURE;
}
return HB_SUCCESS;
}
/*
* Open a memo file in the specified WorkArea.
*/
static HB_ERRCODE hb_dbfOpenMemFile( DBFAREAP pArea, LPDBOPENINFO pOpenInfo )
{
PHB_ITEM pError;
HB_TRACE(HB_TR_DEBUG, ("hb_dbfOpenMemFile(%p, %p)", pArea, pOpenInfo));
pError = hb_errNew();
hb_errPutGenCode( pError, EG_OPEN );
hb_errPutSubCode( pError, EDBF_OPEN_DBF );
hb_errPutDescription( pError, hb_langDGetErrorDesc( EG_OPEN ) );
hb_errPutFileName( pError, ( char * ) pOpenInfo->abName );
SELF_ERROR( ( AREAP ) pArea, pError );
hb_itemRelease( pError );
return HB_FAILURE;
}
/*
* FILE2BLOB - store file contents in MEMO
*/
static HB_ERRCODE hb_dbfPutValueFile( DBFAREAP pArea, USHORT uiIndex, BYTE * szFile, USHORT uiMode )
{
USHORT uiError = HB_SUCCESS, uiRead;
LPFIELD pField;
HB_TRACE(HB_TR_DEBUG, ("hb_dbfPutValueFile(%p, %hu, %s, %hu)", pArea, uiIndex, szFile, uiMode));
HB_SYMBOL_UNUSED( uiMode );
if( pArea->lpdbPendingRel )
{
if( SELF_FORCEREL( ( AREAP ) pArea ) != HB_SUCCESS )
return HB_FAILURE;
}
/* Read record */
if( !pArea->fValidBuffer && !hb_dbfReadRecord( pArea ) )
return HB_FAILURE;
if( --uiIndex >= pArea->uiFieldCount )
return HB_FAILURE;
if( !pArea->fPositioned )
return HB_FAILURE;
/* Buffer is hot? */
if( !pArea->fRecordChanged && SELF_GOHOT( ( AREAP ) pArea ) == HB_FAILURE )
return HB_FAILURE;
pField = pArea->lpFields + uiIndex;
if( pField->uiType == HB_FT_STRING )
{
PHB_FILE pFile;
pFile = hb_fileExtOpen( szFile, NULL, FO_READ | FO_DENYNONE |
FXO_DEFAULTS | FXO_SHARELOCK, NULL, NULL );
if( !pFile )
{
uiError = EDBF_OPEN_DBF;
}
else
{
uiRead = hb_fileReadAt( pFile, pArea->pRecord + pArea->pFieldOffset[ uiIndex ],
pField->uiLen, 0 );
if( uiRead != ( USHORT ) FS_ERROR && uiRead < pField->uiLen )
memset( pArea->pRecord + pArea->pFieldOffset[ uiIndex ] + uiRead,
' ', pField->uiLen - uiRead );
hb_fileClose( pFile );
}
}
else
{
uiError = EDBF_DATATYPE;
}
/* Exit if any error */
if( uiError != HB_SUCCESS )
{
PHB_ITEM pError = hb_errNew();
hb_errPutGenCode( pError, hb_dbfGetEGcode( uiError ) );
hb_errPutDescription( pError, hb_langDGetErrorDesc( hb_dbfGetEGcode( uiError ) ) );
hb_errPutSubCode( pError, uiError );
hb_errPutFlags( pError, EF_CANDEFAULT );
if( uiError != EDBF_DATATYPE )
{
hb_errPutOsCode( pError, hb_fsError() );
hb_errPutFileName( pError, ( char * ) szFile );
}
SELF_ERROR( ( AREAP ) pArea, pError );
hb_itemRelease( pError );
return HB_FAILURE;
}
return HB_SUCCESS;
}
/*
* Read the database file header record in the WorkArea.
*/
static HB_ERRCODE hb_dbfReadDBHeader( DBFAREAP pArea )
{
BOOL fRetry, fError;
PHB_ITEM pError;
HB_TRACE(HB_TR_DEBUG, ("hb_dbfReadDBHeader(%p)", pArea));
pError = NULL;
/* Try read */
do
{
fError = FALSE;
if( hb_fileReadAt( pArea->pDataFile, ( BYTE * ) &pArea->dbfHeader,
sizeof( DBFHEADER ), 0 ) != sizeof( DBFHEADER ) )
{
fError = TRUE;
}
else
{
pArea->fAutoInc = pArea->fModStamp =
pArea->fTableEncrypted = pArea->fHasMemo = FALSE;
pArea->bTableType = DB_DBF_STD;
pArea->bMemoType = DB_MEMO_NONE;
pArea->bCryptType = DB_CRYPT_NONE;
pArea->fHasTags = ( pArea->dbfHeader.bHasTags & 0x01 ) != 0;
switch( pArea->dbfHeader.bVersion )
{
case 0x31:
pArea->fAutoInc = TRUE;
case 0x30:
pArea->bTableType = DB_DBF_VFP;
if( pArea->dbfHeader.bHasTags & 0x02 )
{
pArea->bMemoType = DB_MEMO_FPT;
pArea->fHasMemo = TRUE;
}
break;
case 0x03:
break;
case 0x83:
pArea->fHasMemo = TRUE;
pArea->bMemoType = DB_MEMO_DBT;
break;
case 0xE5:
pArea->fHasMemo = TRUE;
pArea->bMemoType = DB_MEMO_SMT;
break;
case 0xF5:
pArea->fHasMemo = TRUE;
pArea->bMemoType = DB_MEMO_FPT;
break;
case 0x06:
pArea->fTableEncrypted = TRUE;
pArea->bCryptType = DB_CRYPT_SIX;
break;
case 0x86:
pArea->fTableEncrypted = TRUE;
pArea->fHasMemo = TRUE;
pArea->bCryptType = DB_CRYPT_SIX;
pArea->bMemoType = DB_MEMO_DBT;
break;
case 0xE6:
pArea->fHasMemo = TRUE;
pArea->fTableEncrypted = TRUE;
pArea->bCryptType = DB_CRYPT_SIX;
pArea->bMemoType = DB_MEMO_SMT;
break;
case 0xF6:
pArea->fHasMemo = TRUE;
pArea->fTableEncrypted = TRUE;
pArea->bCryptType = DB_CRYPT_SIX;
pArea->bMemoType = DB_MEMO_FPT;
break;
default:
fError = TRUE;
}
}
if( fError )
{
if( !pError )
{
pError = hb_errNew();
hb_errPutGenCode( pError, EG_CORRUPTION );
hb_errPutSubCode( pError, EDBF_CORRUPT );
hb_errPutDescription( pError, hb_langDGetErrorDesc( EG_CORRUPTION ) );
hb_errPutFileName( pError, pArea->szDataFileName );
hb_errPutOsCode( pError, hb_fsError() );
hb_errPutFlags( pError, EF_CANRETRY | EF_CANDEFAULT );
}
fRetry = ( SELF_ERROR( ( AREAP ) pArea, pError ) == E_RETRY );
}
else
fRetry = FALSE;
} while( fRetry );
if( pError )
hb_itemRelease( pError );
/* Read error? */
if( fError )
return HB_FAILURE;
pArea->uiHeaderLen = HB_GET_LE_UINT16( pArea->dbfHeader.uiHeaderLen );
pArea->ulRecCount = HB_GET_LE_UINT32( pArea->dbfHeader.ulRecCount );
return HB_SUCCESS;
}
/*
* Write the database file header record in the WorkArea.
*/
static HB_ERRCODE hb_dbfWriteDBHeader( DBFAREAP pArea )
{
int iYear, iMonth, iDay;
BOOL fLck = FALSE;
HB_ERRCODE errCode;
PHB_ITEM pError;
HB_TRACE(HB_TR_DEBUG, ("hb_dbfWriteDBHeader(%p)", pArea));
if( pArea->fReadonly )
{
pError = hb_errNew();
hb_errPutGenCode( pError, EG_READONLY );
hb_errPutDescription( pError, hb_langDGetErrorDesc( EG_READONLY ) );
hb_errPutSubCode( pError, EDBF_READONLY );
SELF_ERROR( ( AREAP ) pArea, pError );
hb_itemRelease( pError );
return HB_FAILURE;
}
pArea->dbfHeader.bHasTags = pArea->fHasTags ? 0x01 : 0x00;
if( pArea->bTableType == DB_DBF_VFP )
{
pArea->dbfHeader.bVersion = ( pArea->fAutoInc ? 0x31 : 0x30 );
if( pArea->fHasMemo && pArea->bMemoType == DB_MEMO_FPT )
pArea->dbfHeader.bHasTags |= 0x02;
}
else
{
pArea->dbfHeader.bVersion = 0x03;
if( pArea->fHasMemo )
{
if( pArea->bMemoType == DB_MEMO_DBT )
pArea->dbfHeader.bVersion = 0x83;
else if( pArea->bMemoType == DB_MEMO_FPT )
pArea->dbfHeader.bVersion = 0xF5;
else if( pArea->bMemoType == DB_MEMO_SMT )
pArea->dbfHeader.bVersion = 0xE5;
}
if( pArea->fTableEncrypted && pArea->bCryptType == DB_CRYPT_SIX )
pArea->dbfHeader.bVersion = ( pArea->dbfHeader.bVersion & 0xf0 ) | 0x06;
}
hb_dateToday( &iYear, &iMonth, &iDay );
pArea->dbfHeader.bYear = ( BYTE ) ( iYear - 1900 );
pArea->dbfHeader.bMonth = ( BYTE ) iMonth;
pArea->dbfHeader.bDay = ( BYTE ) iDay;
/* Update record count */
if( pArea->fShared )
{
if( !pArea->fHeaderLocked )
{
if( SELF_RAWLOCK( ( AREAP ) pArea, HEADER_LOCK, 0 ) != HB_SUCCESS )
return HB_FAILURE;
fLck = TRUE;
}
pArea->ulRecCount = hb_dbfCalcRecCount( pArea );
}
else
{
/* Exclusive mode */
/* write eof mark */
HB_FOFFSET llOffset = ( HB_FOFFSET ) pArea->uiHeaderLen +
( HB_FOFFSET ) pArea->uiRecordLen *
( HB_FOFFSET ) pArea->ulRecCount;
hb_fileWriteAt( pArea->pDataFile, ( BYTE * ) "\032", 1, llOffset );
hb_fileTruncAt( pArea->pDataFile, llOffset + 1 );
}
HB_PUT_LE_UINT32( pArea->dbfHeader.ulRecCount, pArea->ulRecCount );
HB_PUT_LE_UINT16( pArea->dbfHeader.uiHeaderLen, pArea->uiHeaderLen );
HB_PUT_LE_UINT16( pArea->dbfHeader.uiRecordLen, pArea->uiRecordLen );
if( hb_fileWriteAt( pArea->pDataFile, ( BYTE * ) &pArea->dbfHeader,
sizeof( DBFHEADER ), 0 ) == sizeof( DBFHEADER ) )
{
errCode = HB_SUCCESS;
}
else
{
errCode = HB_FAILURE;
}
/* TODO: add RT error */
pArea->fDataFlush = TRUE;
pArea->fUpdateHeader = FALSE;
if( fLck )
{
if( SELF_RAWLOCK( ( AREAP ) pArea, HEADER_UNLOCK, 0 ) != HB_SUCCESS )
return HB_FAILURE;
}
if( errCode != HB_SUCCESS )
{
pError = hb_errNew();
hb_errPutGenCode( pError, EG_WRITE );
hb_errPutDescription( pError, hb_langDGetErrorDesc( EG_WRITE ) );
hb_errPutSubCode( pError, EDBF_WRITE );
hb_errPutFileName( pError, pArea->szDataFileName );
hb_errPutOsCode( pError, hb_fsError() );
SELF_ERROR( ( AREAP ) pArea, pError );
hb_itemRelease( pError );
}
return errCode;
}
static HB_ERRCODE hb_dbfDrop( LPRDDNODE pRDD, PHB_ITEM pItemTable, PHB_ITEM pItemIndex, ULONG ulConnect )
{
char szFileName[ _POSIX_PATH_MAX + 1 ], * szFile, * szExt;
PHB_ITEM pFileExt = NULL;
PHB_FNAME pFileName;
BOOL fTable = FALSE, fResult = FALSE;
HB_TRACE(HB_TR_DEBUG, ("hb_dbfDrop(%p,%p,%p,%lu)", pRDD, pItemTable, pItemIndex, ulConnect));
szFile = hb_itemGetCPtr( pItemIndex );
if( !szFile[ 0 ] )
{
/* Try to delete index file */
szFile = hb_itemGetCPtr( pItemTable );
if( !szFile[ 0 ] )
return FALSE;
fTable = TRUE;
}
pFileName = hb_fsFNameSplit( szFile );
if( ! pFileName->szExtension && hb_setGetDefExtension() )
{
/* Add default extension if missing */
pFileExt = hb_itemPutC( NULL, NULL );
if( SELF_RDDINFO( pRDD, fTable ? RDDI_TABLEEXT : RDDI_ORDBAGEXT, ulConnect, pFileExt ) == HB_SUCCESS )
pFileName->szExtension = hb_itemGetCPtr( pFileExt );
}
hb_fsFNameMerge( szFileName, pFileName );
hb_xfree( pFileName );
/* Use hb_spFileExists first to locate table which can be in differ path */
if( hb_spFileExists( ( BYTE * ) szFileName, ( BYTE * ) szFileName ) )
{
fResult = hb_fsDelete( ( BYTE * ) szFileName );
if( fResult && fTable )
{
/*
* Database table file has been deleted, now check if memo is
* supported and if yes then try to delete memo file if it exists
* in the same directory as table file
* hb_fsFNameSplit() repeated intentionally to respect
* the path set by hb_spFileExists()
*/
pFileName = hb_fsFNameSplit( szFileName );
pFileExt = hb_itemPutC( pFileExt, NULL );
if( SELF_RDDINFO( pRDD, RDDI_MEMOEXT, ulConnect, pFileExt ) == HB_SUCCESS )
{
szExt = hb_itemGetCPtr( pFileExt );
if( szExt[ 0 ] )
{
pFileName->szExtension = szExt;
hb_fsFNameMerge( szFileName, pFileName );
hb_fsDelete( ( BYTE * ) szFileName );
}
}
/*
* and try to delete production index also if it exists
* in the same directory as table file
*/
pFileExt = hb_itemPutC( pFileExt, NULL );
if( SELF_RDDINFO( pRDD, RDDI_ORDSTRUCTEXT, ulConnect, pFileExt ) == HB_SUCCESS )
{
szExt = hb_itemGetCPtr( pFileExt );
if( szExt[ 0 ] )
{
pFileName->szExtension = szExt;
hb_fsFNameMerge( szFileName, pFileName );
hb_fsDelete( ( BYTE * ) szFileName );
}
}
hb_xfree( pFileName );
}
}
if( pFileExt )
{
hb_itemRelease( pFileExt );
}
return fResult ? HB_SUCCESS : HB_FAILURE;
}
static HB_ERRCODE hb_dbfExists( LPRDDNODE pRDD, PHB_ITEM pItemTable, PHB_ITEM pItemIndex, ULONG ulConnect )
{
char szFileName[ _POSIX_PATH_MAX + 1 ], * szFile;
PHB_ITEM pFileExt = NULL;
PHB_FNAME pFileName;
BOOL fTable = FALSE;
HB_TRACE(HB_TR_DEBUG, ("hb_dbfExists(%p,%p,%p,%lu)", pRDD, pItemTable, pItemIndex, ulConnect));
szFile = hb_itemGetCPtr( pItemIndex );
if( !szFile[ 0 ] )
{
szFile = hb_itemGetCPtr( pItemTable );
if( !szFile[ 0 ] )
return FALSE;
fTable = TRUE;
}
pFileName = hb_fsFNameSplit( szFile );
if( ! pFileName->szExtension && hb_setGetDefExtension() )
{
pFileExt = hb_itemPutC( NULL, NULL );
if( SELF_RDDINFO( pRDD, fTable ? RDDI_TABLEEXT : RDDI_ORDBAGEXT, ulConnect, pFileExt ) == HB_SUCCESS )
pFileName->szExtension = hb_itemGetCPtr( pFileExt );
}
hb_fsFNameMerge( szFileName, pFileName );
hb_xfree( pFileName );
if( pFileExt )
{
hb_itemRelease( pFileExt );
}
return hb_spFileExists( ( BYTE * ) szFileName, NULL ) ? HB_SUCCESS : HB_FAILURE;
}
static void hb_dbfInitTSD( void * Cargo )
{
HB_TRACE(HB_TR_DEBUG, ("hb_dbfInitTSD(%p)", Cargo));
( ( LPDBFDATA ) Cargo )->bTableType = DB_DBF_STD;
( ( LPDBFDATA ) Cargo )->bCryptType = DB_CRYPT_NONE;
( ( LPDBFDATA ) Cargo )->uiDirtyRead = HB_IDXREAD_CLEANMASK;
}
static void hb_dbfDestroyTSD( void * Cargo )
{
LPDBFDATA pData;
HB_TRACE(HB_TR_DEBUG, ("hb_dbfDestroyTSD(%p)", Cargo));
pData = ( LPDBFDATA ) Cargo;
if( pData->szTrigger )
hb_xfree( pData->szTrigger );
if( pData->szPendingTrigger )
hb_xfree( pData->szPendingTrigger );
if( pData->szPasswd )
hb_xfree( pData->szPasswd );
if( pData->szPendingPasswd )
hb_xfree( pData->szPendingPasswd );
}
static HB_ERRCODE hb_dbfInit( LPRDDNODE pRDD )
{
PHB_TSD pTSD;
HB_TRACE(HB_TR_DEBUG, ("hb_dbfInit(%p)", pRDD));
pTSD = ( PHB_TSD ) hb_xgrab( sizeof( HB_TSD ) );
HB_TSD_INIT( pTSD, sizeof( DBFDATA ), hb_dbfInitTSD, hb_dbfDestroyTSD );
pRDD->lpvCargo = ( void * ) pTSD;
return HB_SUCCESS;
}
static HB_ERRCODE hb_dbfExit( LPRDDNODE pRDD )
{
HB_TRACE(HB_TR_DEBUG, ("hb_dbfExit(%p)", pRDD));
if( pRDD->lpvCargo )
{
hb_stackReleaseTSD( ( PHB_TSD ) pRDD->lpvCargo );
hb_xfree( pRDD->lpvCargo );
pRDD->lpvCargo = NULL;
}
s_uiRddId = ( USHORT ) -1;
return HB_SUCCESS;
}
static HB_ERRCODE hb_dbfRddInfo( LPRDDNODE pRDD, USHORT uiIndex, ULONG ulConnect, PHB_ITEM pItem )
{
LPDBFDATA pData;
HB_TRACE(HB_TR_DEBUG, ("hb_dbfRddInfo(%p, %hu, %lu, %p)", pRDD, uiIndex, ulConnect, pItem));
pData = DBFNODE_DATA( pRDD );
switch( uiIndex )
{
case RDDI_ISDBF:
case RDDI_CANPUTREC:
case RDDI_LOCAL:
hb_itemPutL( pItem, TRUE );
break;
case RDDI_TABLEEXT:
{
char * szNew = hb_itemGetCPtr( pItem );
if( szNew[0] == '.' && szNew[1] )
szNew = hb_strdup( szNew );
else
szNew = NULL;
hb_itemPutC( pItem, pData->szTableExt[ 0 ] ? pData->szTableExt : DBF_TABLEEXT );
if( szNew )
{
hb_strncpy( pData->szTableExt, szNew, sizeof( pData->szTableExt ) - 1 );
hb_xfree( szNew );
}
break;
}
case RDDI_TABLETYPE:
{
int iType = hb_itemGetNI( pItem );
hb_itemPutNI( pItem, pData->bTableType ? pData->bTableType : DB_DBF_STD );
switch( iType )
{
case DB_DBF_STD: /* standard dBase/Clipper DBF file */
case DB_DBF_VFP: /* VFP DBF file */
pData->bTableType = iType;
}
break;
}
case RDDI_LOCKSCHEME:
{
int iScheme = hb_itemGetNI( pItem );
hb_itemPutNI( pItem, pData->bLockType ? pData->bLockType :
hb_setGetDBFLockScheme() );
switch( iScheme )
{
case DB_DBFLOCK_CLIP:
case DB_DBFLOCK_CL53:
case DB_DBFLOCK_CL53EXT:
case DB_DBFLOCK_VFP:
#ifndef HB_LONG_LONG_OFF
case DB_DBFLOCK_XHB64:
#endif
pData->bLockType = ( int ) iScheme;
}
break;
}
case RDDI_DIRTYREAD:
{
BOOL fDirty = ( pData->uiDirtyRead == HB_IDXREAD_DIRTYMASK );
if( HB_IS_LOGICAL( pItem ) )
{
pData->uiDirtyRead = hb_itemGetL( pItem ) ?
HB_IDXREAD_DIRTYMASK : HB_IDXREAD_CLEANMASK;
}
hb_itemPutL( pItem, fDirty );
break;
}
case RDDI_TRIGGER:
{
char * szTrigger = pData->szTrigger;
BOOL fFree = FALSE;
if( HB_IS_STRING( pItem ) )
{
fFree = TRUE;
pData->szTrigger = hb_itemGetCLen( pItem ) > 0 ?
hb_itemGetC( pItem ) : NULL;
}
if( fFree && szTrigger )
hb_itemPutCPtr2( pItem, szTrigger );
else
hb_itemPutC( pItem, szTrigger );
if( !szTrigger && !fFree )
return HB_FAILURE;
break;
}
case RDDI_PENDINGTRIGGER:
if( HB_IS_STRING( pItem ) )
{
if( pData->szPendingTrigger )
{
hb_xfree( pData->szPendingTrigger );
pData->szPendingTrigger = NULL;
}
if( hb_itemGetCLen( pItem ) > 0 )
pData->szPendingTrigger = hb_itemGetC( pItem );
}
else if( pData->szPendingTrigger )
{
hb_itemPutCPtr2( pItem, pData->szPendingTrigger );
pData->szPendingTrigger = NULL;
}
else
return HB_FAILURE;
break;
case RDDI_PASSWORD:
{
char * szPasswd = pData->szPasswd;
BOOL fFree = FALSE;
if( HB_IS_STRING( pItem ) )
{
fFree = TRUE;
pData->szPasswd = hb_itemGetCLen( pItem ) > 0 ?
hb_itemGetC( pItem ) : NULL;
}
if( fFree && szPasswd )
hb_itemPutCPtr2( pItem, szPasswd );
else
hb_itemPutC( pItem, szPasswd );
if( !szPasswd && !fFree )
return HB_FAILURE;
break;
}
case RDDI_PENDINGPASSWORD:
if( HB_IS_STRING( pItem ) )
{
if( pData->szPendingPasswd )
{
hb_xfree( pData->szPendingPasswd );
pData->szPendingPasswd = NULL;
}
if( hb_itemGetCLen( pItem ) > 0 )
pData->szPendingPasswd = hb_itemGetC( pItem );
}
else if( pData->szPendingPasswd )
{
hb_itemPutCPtr2( pItem, pData->szPendingPasswd );
pData->szPendingPasswd = NULL;
}
else
return HB_FAILURE;
break;
default:
return SUPER_RDDINFO( pRDD, uiIndex, ulConnect, pItem );
}
return HB_SUCCESS;
}
HB_FUNC( _DBF ) { ; }
HB_FUNC( DBF_GETFUNCTABLE )
{
RDDFUNCS * pTable;
USHORT * uiCount, uiRddId;
uiCount = ( USHORT * ) hb_parptr( 1 );
pTable = ( RDDFUNCS * ) hb_parptr( 2 );
uiRddId = hb_parni( 4 );
HB_TRACE(HB_TR_DEBUG, ("DBF_GETFUNCTABLE(%p, %p)", uiCount, pTable));
if( pTable )
{
HB_ERRCODE errCode;
if( uiCount )
* uiCount = RDDFUNCSCOUNT;
errCode = hb_rddInherit( pTable, &dbfTable, &dbfSuper, NULL );
hb_retni( errCode );
if( errCode == HB_SUCCESS )
{
/*
* we successfully register our RDD so now we can initialize it
* You may think that this place is RDD init statement, Druzus
*/
s_uiRddId = uiRddId;
}
}
else
hb_retni( HB_FAILURE );
}
#define __PRG_SOURCE__ __FILE__
#ifdef HB_PCODE_VER
#undef HB_PRG_PCODE_VER
#define HB_PRG_PCODE_VER HB_PCODE_VER
#endif
static void hb_dbfRddInit( void * cargo )
{
HB_SYMBOL_UNUSED( cargo );
if( hb_rddRegister( "DBF", RDT_FULL ) > 1 )
{
hb_errInternal( HB_EI_RDDINVALID, NULL, NULL, NULL );
}
}
HB_INIT_SYMBOLS_BEGIN( dbf1__InitSymbols )
{ "_DBF", {HB_FS_PUBLIC|HB_FS_LOCAL}, {HB_FUNCNAME( _DBF )}, NULL },
{ "DBF_GETFUNCTABLE", {HB_FS_PUBLIC|HB_FS_LOCAL}, {HB_FUNCNAME( DBF_GETFUNCTABLE )}, NULL }
HB_INIT_SYMBOLS_END( dbf1__InitSymbols )
HB_CALL_ON_STARTUP_BEGIN( _hb_dbf_rdd_init_ )
hb_vmAtInit( hb_dbfRddInit, NULL );
HB_CALL_ON_STARTUP_END( _hb_dbf_rdd_init_ )
#if defined( HB_PRAGMA_STARTUP )
#pragma startup dbf1__InitSymbols
#pragma startup _hb_dbf_rdd_init_
#elif defined( HB_MSC_STARTUP )
#if defined( HB_OS_WIN_64 )
#pragma section( HB_MSC_START_SEGMENT, long, read )
#endif
#pragma data_seg( HB_MSC_START_SEGMENT )
static HB_$INITSYM hb_vm_auto_dbf1__InitSymbols = dbf1__InitSymbols;
static HB_$INITSYM hb_vm_auto_dbf_rdd_init = _hb_dbf_rdd_init_;
#pragma data_seg()
#endif
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