/* * $Id$ */ /* * Harbour Project source code: * DBF RDD module * * Copyright 1999 Bruno Cantero * 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. * */ #ifndef HB_RDDDBF_H_ #define HB_RDDDBF_H_ #include "hbsetup.h" #include "hbapirdd.h" #include "hbdbferr.h" #ifndef HB_CDP_SUPPORT_OFF #include "hbapicdp.h" #endif HB_EXTERN_BEGIN /* DBF default file extensions */ #define DBF_TABLEEXT ".dbf" /* DBF locking schemes */ #define DBF_LOCKPOS_CLIP 1000000000L #define DBF_LOCKPOS_CL53 1000000000L #define DBF_LOCKPOS_VFP 0x40000000L #define DBF_LOCKPOS_VFPX 0x7ffffffeL #define DBF_LOCKDIR_CLIP 1 #define DBF_LOCKDIR_CL53 1 #define DBF_LOCKDIR_VFP 2 /* lock forward at at record offset */ #define DBF_LOCKDIR_VFPX -1 #define DBF_FLCKSIZE_CLIP 1000000000L #define DBF_FLCKSIZE_CL53 1000000000L #define DBF_FLCKSIZE_VFP 0x3ffffffdL #define DBF_FLCKSIZE_VFPX 0x07ffffffL #define DBF_RLCKSIZE_CLIP 1L #define DBF_RLCKSIZE_CL53 1L #define DBF_RLCKSIZE_VFP 1L #define DBF_RLCKSIZE_VFPX 1L #define IDX_LOCKPOS_CLIP 1000000000L #define IDX_LOCKPOS_CL53 0xfffeffffL #define IDX_LOCKPOS_VFP 0x7ffffffeL #define IDX_LOCKPOOL_CLIP 0L #define IDX_LOCKPOOL_CL53 0x00010000L #define IDX_LOCKPOOL_VFP 0L #ifdef OS_UNIX_COMPATIBLE #define DBF_EXLUSIVE_LOCKPOS 0x7fffffffL #define DBF_EXLUSIVE_LOCKSIZE 1L #endif /* * DBF WORKAREA * ------------ * The Workarea Structure of DBF RDD * */ typedef struct _DBFAREA { struct _RDDFUNCS * lprfsHost; /* Virtual method table for this workarea */ USHORT uiArea; /* The number assigned to this workarea */ void * atomAlias; /* Pointer to the alias symbol for this workarea */ USHORT uiFieldExtent; /* Total number of fields allocated */ USHORT uiFieldCount; /* Total number of fields used */ LPFIELD lpFields; /* Pointer to an array of fields */ void * lpFieldExtents; /* Void ptr for additional field properties */ PHB_ITEM valResult; /* All purpose result holder */ BOOL fTop; /* TRUE if "top" */ BOOL fBottom; /* TRUE if "bottom" */ BOOL fBof; /* TRUE if "bof" */ BOOL fEof; /* TRUE if "eof" */ BOOL fFound; /* TRUE if "found" */ DBSCOPEINFO dbsi; /* Info regarding last LOCATE */ DBFILTERINFO dbfi; /* Filter in effect */ LPDBORDERCONDINFO lpdbOrdCondInfo; LPDBRELINFO lpdbRelations; /* Parent/Child relationships used */ USHORT uiParents; /* Number of parents for this area */ USHORT heap; USHORT heapSize; USHORT rddID; USHORT uiMaxFieldNameLength; /* * DBFS's additions to the workarea structure * * Warning: The above section MUST match WORKAREA exactly! Any * additions to the structure MUST be added below, as in this * example. */ FHANDLE hDataFile; /* Data file handle */ FHANDLE hMemoFile; /* Memo file handle */ USHORT uiHeaderLen; /* Size of header */ USHORT uiRecordLen; /* Size of record */ ULONG ulRecCount; /* Total records */ char * szDataFileName; /* Name of data file */ char * szMemoFileName; /* Name of memo file */ USHORT uiMemoBlockSize; /* Size of memo block */ BYTE bMemoType; /* MEMO type used in DBF memo fields */ BOOL fHasMemo; /* WorkArea with Memo fields */ BOOL fHasTags; /* WorkArea with MDX or CDX index */ BOOL fDataFlush; /* data was written to DBF and not commited */ BOOL fMemoFlush; /* data was written to MEMO and not commited */ BYTE bVersion; /* DBF version ID byte */ BYTE bCodePage; /* DBF codepage ID */ BOOL fShared; /* Shared file */ BOOL fReadonly; /* Read only file */ USHORT * pFieldOffset; /* Pointer to field offset array */ BYTE * pRecord; /* Buffer of record data */ BOOL fValidBuffer; /* State of buffer */ BOOL fPositioned; /* Positioned record */ ULONG ulRecNo; /* Current record */ BOOL fRecordChanged; /* Record changed */ BOOL fAppend; /* TRUE if new record is added */ BOOL fDeleted; /* TRUE if record is deleted */ BOOL fUpdateHeader; /* Update header of file */ BOOL fFLocked; /* TRUE if file is locked */ BOOL fHeaderLocked; /* TRUE if DBF header is locked */ LPDBRELINFO lpdbPendingRel; /* Pointer to parent rel struct */ BYTE bYear; /* Last update */ BYTE bMonth; BYTE bDay; BYTE bLockType; /* Type of locking shemes */ ULONG * pLocksPos; /* List of records locked */ ULONG ulNumLocksPos; /* Number of records locked */ #ifndef HB_CDP_SUPPORT_OFF PHB_CODEPAGE cdPage; /* Area's codepage pointer */ #endif } DBFAREA; typedef DBFAREA * LPDBFAREA; #ifndef DBFAREAP #define DBFAREAP LPDBFAREA #endif #ifndef HB_EXTERNAL_RDDDBF_USE /* * -- DBF METHODS -- */ #define SUPERTABLE ( &dbfSuper ) static ERRCODE hb_dbfBof( DBFAREAP pArea, BOOL * pBof ); static ERRCODE hb_dbfEof( DBFAREAP pArea, BOOL * pEof ); static ERRCODE hb_dbfFound( DBFAREAP pArea, BOOL * pFound ); static ERRCODE hb_dbfGoBottom( DBFAREAP pArea ); static ERRCODE hb_dbfGoTo( DBFAREAP pArea, ULONG ulRecNo ); static ERRCODE hb_dbfGoToId( DBFAREAP pArea, PHB_ITEM pItem ); static ERRCODE hb_dbfGoTop( DBFAREAP pArea ); #define hb_dbfSeek NULL static ERRCODE hb_dbfSkip( DBFAREAP pArea, LONG lToSkip ); #define hb_dbfSkipFilter NULL static ERRCODE hb_dbfSkipRaw( DBFAREAP pArea, LONG lToSkip ); static ERRCODE hb_dbfAddField( DBFAREAP pArea, LPDBFIELDINFO pFieldInfo ); static ERRCODE hb_dbfAppend( DBFAREAP pArea, BOOL bUnLockAll ); #define hb_dbfCreateFields NULL static ERRCODE hb_dbfDeleteRec( DBFAREAP pArea ); static ERRCODE hb_dbfDeleted( DBFAREAP pArea, BOOL * pDeleted ); #define hb_dbfFieldCount NULL #define hb_dbfFieldDisplay NULL #define hb_dbfFieldInfo NULL #define hb_dbfFieldName NULL static ERRCODE hb_dbfFlush( DBFAREAP pArea ); static ERRCODE hb_dbfGetRec( DBFAREAP pArea, BYTE ** pBuffer ); static ERRCODE hb_dbfGetValue( DBFAREAP pArea, USHORT uiIndex, PHB_ITEM pItem ); static ERRCODE hb_dbfGetVarLen( DBFAREAP pArea, USHORT uiIndex, ULONG * pLength ); static ERRCODE hb_dbfGoCold( DBFAREAP pArea ); static ERRCODE hb_dbfGoHot( DBFAREAP pArea ); static ERRCODE hb_dbfPutRec( DBFAREAP pArea, BYTE * pBuffer ); static ERRCODE hb_dbfPutValue( DBFAREAP pArea, USHORT uiIndex, PHB_ITEM pItem ); static ERRCODE hb_dbfRecall( DBFAREAP pArea ); static ERRCODE hb_dbfRecCount( DBFAREAP pArea, ULONG * pRecCount ); static ERRCODE hb_dbfRecInfo( DBFAREAP pArea, PHB_ITEM pRecID, USHORT uiInfoType, PHB_ITEM pInfo ); static ERRCODE hb_dbfRecNo( DBFAREAP pArea, PHB_ITEM pRecNo ); static ERRCODE hb_dbfSetFieldExtent( DBFAREAP pArea, USHORT uiFieldExtent ); #define hb_dbfAlias NULL static ERRCODE hb_dbfClose( DBFAREAP pArea ); static ERRCODE hb_dbfCreate( DBFAREAP pArea, LPDBOPENINFO pCreateInfo ); static ERRCODE hb_dbfInfo( DBFAREAP pArea, USHORT uiIndex, PHB_ITEM pItem ); static ERRCODE hb_dbfNewArea( DBFAREAP pArea ); static ERRCODE hb_dbfOpen( DBFAREAP pArea, LPDBOPENINFO pOpenInfo ); #define hb_dbfRelease NULL static ERRCODE hb_dbfStructSize( DBFAREAP pArea, USHORT * uiSize ); static ERRCODE hb_dbfSysName( DBFAREAP pArea, BYTE * pBuffer ); #define hb_dbfEval NULL static ERRCODE hb_dbfPack( DBFAREAP pArea ); #define hb_dbfPackRec NULL static ERRCODE hb_dbfSort( DBFAREAP pArea, LPDBSORTINFO pSortInfo ); static ERRCODE hb_dbfTrans( DBFAREAP pArea, LPDBTRANSINFO pTransInfo ); static ERRCODE hb_dbfTransRec( DBFAREAP pArea, LPDBTRANSINFO pTransInfo ); static ERRCODE hb_dbfZap( DBFAREAP pArea ); static ERRCODE hb_dbfChildEnd( DBFAREAP pArea, LPDBRELINFO pRelInfo ); static ERRCODE hb_dbfChildStart( DBFAREAP pArea, LPDBRELINFO pRelInfo ); static ERRCODE hb_dbfChildSync( DBFAREAP pArea, LPDBRELINFO pRelInfo ); #define hb_dbfSyncChildren NULL #define hb_dbfClearRel NULL static ERRCODE hb_dbfForceRel( DBFAREAP pArea ); #define hb_dbfRelArea NULL #define hb_dbfRelEval NULL #define hb_dbfRelText NULL #define hb_dbfSetRel NULL #define hb_dbfOrderListAdd NULL #define hb_dbfOrderListClear NULL #define hb_dbfOrderListDelete NULL #define hb_dbfOrderListFocus NULL #define hb_dbfOrderListRebuild NULL #define hb_dbfOrderCondition NULL #define hb_dbfOrderCreate NULL #define hb_dbfOrderDestroy NULL #define hb_dbfOrderInfo NULL #define hb_dbfClearFilter NULL #define hb_dbfClearLocate NULL #define hb_dbfClearScope NULL #define hb_dbfCountScope NULL #define hb_dbfFilterText NULL #define hb_dbfScopeInfo NULL static ERRCODE hb_dbfSetFilter( DBFAREAP pArea, LPDBFILTERINFO pFilterInfo ); #define hb_dbfSetLocate NULL #define hb_dbfSetScope NULL #define hb_dbfSkipScope NULL #define hb_dbfCompile NULL #define hb_dbfError NULL #define hb_dbfEvalBlock NULL static ERRCODE hb_dbfRawLock( DBFAREAP pArea, USHORT uiAction, ULONG lRecNo ); static ERRCODE hb_dbfLock( DBFAREAP pArea, LPDBLOCKINFO pLockInfo ); static ERRCODE hb_dbfUnLock( DBFAREAP pArea, ULONG ulRecNo ); #define hb_dbfCloseMemFile NULL static ERRCODE hb_dbfCreateMemFile( DBFAREAP pArea, LPDBOPENINFO pCreateInfo ); #define hb_dbfGetValueFile NULL static ERRCODE hb_dbfOpenMemFile( DBFAREAP pArea, LPDBOPENINFO pOpenInfo ); #define hb_dbfPutValueFile NULL static ERRCODE hb_dbfReadDBHeader( DBFAREAP pArea ); static ERRCODE hb_dbfWriteDBHeader( DBFAREAP pArea ); #define hb_dbfExit NULL static ERRCODE hb_dbfDrop( PHB_ITEM pItemTable ); #define hb_dbfWhoCares NULL #endif /* HB_EXTERNAL_RDDDBF_USE */ extern BOOL HB_EXPORT hb_dbfExists( PHB_ITEM pItemTable, PHB_ITEM pItemIndex ); extern ULONG HB_EXPORT hb_dbfGetMemoBlock( DBFAREAP pArea, USHORT uiIndex ); extern void HB_EXPORT hb_dbfPutMemoBlock( DBFAREAP pArea, USHORT uiIndex, ULONG ulBlock ); extern ERRCODE HB_EXPORT hb_dbfGetEGcode( ERRCODE errCode ); extern BOOL HB_EXPORT hb_dbfLockIdxFile( FHANDLE hFile, BYTE bScheme, USHORT usMode, ULONG *pPoolPos ); extern BOOL HB_EXPORT hb_dbfLockIdxGetData( BYTE bScheme, ULONG *ulPos, ULONG *ulPool ); HB_EXTERN_END #endif /* HB_RDDDBF_H_ */