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-/* xbdbf.h
-
- Xbase64 project source code
-
- This file contains the Class definition for a xbDBF object.
-
- Copyright (C) 1997,2003 Gary A Kunkel
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU Lesser General Public License as published by
- the Free Software Foundation; either version 2 of the License, 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 Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-
-
- Contact:
-
- Email:
-
- xdb-devel@lists.sourceforge.net
- xdb-users@lists.sourceforge.net
-
-
- Regular Mail:
-
- XBase Support
- 149C South Main St
- Keller Texas, 76248
- USA
-
-*/
-
-#ifndef __XB_DBF_H__
-#define __XB_DBF_H__
-
-#ifdef __GNU LesserG__
-#pragma interface
-#endif
-
-#ifdef __WIN32__
-#include <xbase64/xbwincfg.h>
-#else
-#include <xbase64/xbconfig.h>
-#endif
-
-#include <xbase64/xbtypes.h>
-#include <xbase64/xbdate.h>
-#include <xbase64/xbfile.h>
-
-#include <iostream>
-#include <stdio.h>
-
-/*! \file xbdbf.h
-*/
-
-#if defined(XB_INDEX_ANY)
- class XBDLLEXPORT xbIndex;
- class XBDLLEXPORT xbNdx;
- class XBDLLEXPORT xbNtx;
-#endif
-
-/*****************************/
-/* Field Types */
-
-#define XB_CHAR_FLD 'C'
-#define XB_LOGICAL_FLD 'L'
-#define XB_NUMERIC_FLD 'N'
-#define XB_DATE_FLD 'D'
-#define XB_MEMO_FLD 'M'
-#define XB_FLOAT_FLD 'F'
-
-/*****************************/
-/* File Status Codes */
-
-#define XB_CLOSED 0
-#define XB_OPEN 1
-#define XB_UPDATED 2
-
-/*****************************/
-/* Other defines */
-
-#define XB_OVERLAY 1
-#define XB_DONTOVERLAY 0
-
-#define XB_CHAREOF '\x1A' /* end of DBF */
-#define XB_CHARHDR '\x0D' /* header terminator */
-
-//! Used to define the fields in a database (DBF file).
-/*!
- Generally one would define an xbSchema array to be passed
- to xbDbf::CreateDatabase() to define the fields in the database.
-
- For example, one might create a declaration as follows:
-
- \code
- xbSchema MyRecord[] =
- {
- { "FIRSTNAME", XB_CHAR_FLD, 15, 0 },
- { "LASTNAME", XB_CHAR_FLD, 20, 0 },
- { "BIRTHDATE", XB_DATE_FLD, 8, 0 },
- { "AMOUNT", XB_NUMERIC_FLD, 9, 2 },
- { "SWITCH", XB_LOGICAL_FLD, 1, 0 },
- { "FLOAT1", XB_FLOAT_FLD, 9, 2 },
- { "FLOAT2", XB_FLOAT_FLD, 9, 1 },
- { "FLOAT3", XB_FLOAT_FLD, 9, 2 },
- { "FLOAT4", XB_FLOAT_FLD, 9, 3 },
- { "MEMO1", XB_MEMO_FLD, 10, 0 },
- { "ZIPCODE", XB_NUMERIC_FLD, 5, 0 },
- { "",0,0,0 }
- };
- \endcode
-
- Note that the last xbSchema in an array must be a "null" entry like the
- one above:
-
- \code
- { "",0,0,0 }
- \endcode
-
- To indicate the end of the array.
-*/
-struct XBDLLEXPORT xbSchema {
- char FieldName[11];
- char Type;
-// xbUShort FieldLen; /* does not work */
-// xbUShort NoOfDecs; /* does not work */
- unsigned char FieldLen; /* fields are stored as one byte on record*/
- unsigned char NoOfDecs;
-};
-
-//! Defines a field in an XBase file header (DBF file header)
-/*!
- This structure is only used internally by the xbDbf class.
-*/
-struct XBDLLEXPORT xbSchemaRec {
- char FieldName[11];
- char Type; /* field type */
- char *Address; /* pointer to field in record buffer 1 */
-// xbUShort FieldLen; /* does not work */
-// xbUShort NoOfDecs; /* does not work */
- unsigned char FieldLen; /* fields are stored as one byte on record */
- unsigned char NoOfDecs;
- char *Address2; /* pointer to field in record buffer 2 */
- char *fp; /* pointer to null terminated buffer for field */
- /* see method GetString */
- xbShort LongFieldLen; /* to handle long field lengths */
-};
-
-//! xbIxList struct
-/*!
- Internal use only.
-*/
-struct XBDLLEXPORT xbIxList {
- xbIxList * NextIx;
- xbString IxName;
-#if defined(XB_INDEX_ANY)
- xbIndex * index;
- xbShort Unique;
- xbShort KeyUpdated;
-#endif
-};
-
-//! xbMH struct
-/*!
- Internal use only.
-*/
-
-#ifdef XB_MEMO_FIELDS
-struct XBDLLEXPORT xbMH{ /* memo header */
- xbLong NextBlock; /* pointer to next block to write */
- char FileName[8]; /* name of dbt file */
- char Version; /* not sure */
- xbShort BlockSize; /* memo file block size */
-};
-#endif
-
-//! xbDbf class
-/*!
- The xbDbf class encapsulates an xbase DBF database file. It includes
- all dbf access, field access, and locking methods.
-*/
-class XBDLLEXPORT xbDbf : protected xbFile{
-
-public:
- xbDbf( xbXBase * );
- virtual ~xbDbf();
-
- xbXBase *xbase; /* linkage to main base class */
-
-/* datafile methods */
-#if defined(XB_INDEX_ANY)
- xbShort AddIndexToIxList(xbIndex *, const char *IndexName);
- xbShort RemoveIndexFromIxList( xbIndex * );
-#endif
- xbShort AppendRecord();
- xbShort BlankRecord();
- xbShort CloseDatabase( xbBool deleteIndexes = 0 );
- xbShort CopyDbfStructure( const char *, xbShort );
- xbShort CreateDatabase( const char * Name, xbSchema *, xbShort Overlay );
- //! Delete all records
- /*!
- */
- xbShort DeleteAllRecords() { return DeleteAll(0); }
- xbShort DeleteRecord();
-#ifdef XBASE_DEBUG
- xbShort DumpHeader( xbShort );
-#endif
- xbShort DumpRecord( xbULong );
- //! Return number of fields
- /*!
- */
- xbLong FieldCount() { return NoOfFields; }
- //! Return Dbf name
- /*!
- */
- const xbString& GetDbfName() { return GetFileName(); }
- //! Return status
- /*!
- */
- xbShort GetDbfStatus() { return DbfStatus; }
- xbShort GetFirstRecord();
- xbShort GetLastRecord();
- xbShort GetNextRecord();
- xbShort GetPrevRecord();
- //! Return current record number
- /*!
- */
- xbLong GetCurRecNo() { return CurRec; }
- xbShort GetRecord( xbULong );
- //! Return a pointer to the record buffer
- /*!
- */
- char * GetRecordBuf() { return RecBuf; }
- //! Return record length
- /*!
- */
- xbShort GetRecordLen() { return RecordLen; }
- xbShort NameSuffixMissing( xbShort, const char * );
- xbLong GetRecCnt() { return NoOfRecords(); }
- xbLong NoOfRecords();
- xbLong PhysicalNoOfRecords();
- xbShort OpenDatabase( const char * );
- xbShort PackDatabase(xbShort LockWaitOption,
- void (*packStatusFunc)(xbLong itemNum, xbLong numItems) = 0,
- void (*indexStatusFunc)(xbLong itemNum, xbLong numItems) = 0);
- xbShort PutRecord(); // Put record to current position
- xbShort PutRecord(xbULong);
- xbShort RebuildAllIndices(
- void (*statusFunc)(xbLong itemNum, xbLong numItems) = 0);
- xbShort RecordDeleted();
- //! Set number of records to zero????
- /*!
- */
- void ResetNoOfRecs() { NoOfRecs = 0L; }
- xbShort SetVersion( xbShort );
- //! Undelete all records
- /*!
- */
- xbShort UndeleteAllRecords() { return DeleteAll(1); }
- xbShort UndeleteRecord();
- xbShort Zap( xbShort );
-
-/* field methods */
- const char *GetField(xbShort FieldNo) const; // Using internal static buffer
- const char *GetField(const char *Name) const;
- xbShort GetField( xbShort FieldNo, char *Buf) const;
- xbShort GetRawField( xbShort FieldNo, char *Buf) const;
- xbShort GetField( xbShort FieldNo, char *Buf, xbShort RecBufSw) const;
- xbShort GetField( const char *Name, char *Buf) const;
- xbShort GetRawField(const char *Name, char *Buf) const;
- xbShort GetField( const char *Name, char *Buf, xbShort RecBufSw) const;
- xbShort GetField(xbShort FieldNo, xbString&, xbShort RecBufSw ) const;
- xbShort GetFieldDecimal( xbShort );
- xbShort GetFieldLen( xbShort );
- char * GetFieldName( xbShort );
- xbShort GetFieldNo( const char * FieldName ) const;
- char GetFieldType( xbShort FieldNo ) const;
- xbShort GetLogicalField( xbShort FieldNo );
- xbShort GetLogicalField( const char * FieldName );
- char * GetStringField( xbShort FieldNo );
- char * GetStringField( const char * FieldName );
- xbShort PutField( xbShort, const char * );
- xbShort PutRawField( xbShort FieldNo, const char *buf );
- xbShort PutField( const char *Name, const char *buf);
- xbShort PutRawField( const char *Name, const char *buf );
- xbShort ValidLogicalData( const char * );
- xbShort ValidNumericData( const char * );
-
- xbLong GetLongField( const char *FieldName) const;
- xbLong GetLongField( const xbShort FieldNo) const;
- xbShort PutLongField( const xbShort, const xbLong );
- xbShort PutLongField( const char *, const xbLong);
-
- xbFloat GetFloatField( const char * FieldName );
- xbFloat GetFloatField( xbShort FieldNo );
- xbShort PutFloatField( const char *, const xbFloat);
- xbShort PutFloatField( const xbShort, const xbFloat);
-
- xbDouble GetDoubleField( const char *);
- xbDouble GetDoubleField( xbShort, xbShort RecBufSw = 0);
- xbShort PutDoubleField( const char *, xbDouble);
- xbShort PutDoubleField( const xbShort, xbDouble);
-
-#ifdef XB_LOCKING_ON
- xbShort GetLockMode() { return LockMode; }
- xbShort SetLockMode( xbShort );
-// xbShort OpenXbLockFile();
-// xbShort GetTableLockCnt() { return TableLockCnt; }
-// xbShort LockIndex( xbShort LockType ); /* for XB_XBASE_LOCK_MODE */
- int GetDbfFileNo() { return fileno( fp ); }
- int GetMemoFileNo() { return fileno( mfp ); }
-
-#ifdef XB_MEMO_FIELDS
-// xbShort GetMemoLockCnt() { return MemoLockCnt; }
-#endif
-
-/*
- xbShort LockTable( xbShort LockType );
- xbShort LockXbaseTable( xbShort LockType );
- xbShort LockClipperTable( xbShort LockType );
- xbShort LockFoxproTable( xbShort LockType );
- xbShort LockDbaseTable( xbShort LockType );
-
- xbShort LockRecord( xbShort LockType, xbULong RecNo, xbULong RecCnt );
- xbShort LockXbaseRecord( xbShort LockType, xbULong RecNo, xbULong RecCnt );
- xbShort LockClipperRecord(
- xbShort LockType, xbULong RecNo, xbULong RecCnt );
- xbShort LockFoxproRecord( xbShort LockType, xbULong RecNo, xbULong RecCnt );
- xbShort LockDbaseRecord( xbShort LockType, xbULong RecNo, xbULong RecCnt );
-
- xbShort LockDatabase( xbShort, xbShort, xbULong );
- xbShort ExclusiveLock( xbShort );
- xbShort ExclusiveUnlock();
- xbShort LockDatabase( xbShort cmd, xbULong recNo ) { return 0; }
-*/
-
-#ifndef HAVE_FCNTL
- xbShort UnixToDosLockCommand( xbShort WaitOption,
- xbShort LockType ) const;
-#endif
-
-#else
- xbShort LockDatabase( xbShort, xbShort, xbLong )
- { return XB_NO_ERROR; }
- xbShort ExclusiveLock( xbShort ) { return XB_NO_ERROR; };
- xbShort ExclusiveUnlock() { return XB_NO_ERROR; };
-#endif
-
- //! Turn autolock on
- /*!
- */
- void AutoLockOn() { AutoLock = 1; }
- //! Turn autolock off
- /*!
- */
- void AutoLockOff() { AutoLock = 0; }
- //! Return whether or not autolocking is on or off
- /*!
- */
- xbShort GetAutoLock() { return AutoLock; }
-
-#ifdef XB_MEMO_FIELDS
- xbShort GetMemoField( xbShort FieldNo, xbLong len,
- char * Buf, xbShort LockOption );
- xbLong GetMemoFieldLen( xbShort FieldNo );
- xbShort GetFPTField( xbShort FieldNo, xbLong len,
- char * Buf, xbShort LockOption );
- xbLong GetFPTFieldLen( xbShort FieldNo );
- xbShort UpdateMemoData( xbShort FieldNo, xbLong len,
- const char * Buf, xbShort LockOption );
- xbShort MemoFieldExists( xbShort FieldNo ) const;
- xbShort LockMemoFile( xbShort WaitOption, xbShort LockType );
-
- xbShort MemoFieldsPresent() const;
- xbLong CalcLastDataBlock();
- xbShort FindBlockSetInChain( xbLong BlocksNeeded, xbLong
- LastDataBlock, xbLong & Location, xbLong &PreviousNode );
- xbShort GetBlockSetFromChain( xbLong BlocksNeeded, xbLong
- Location, xbLong PreviousNode );
- xbString & GetDbtName() { return MemofileName; }
-
-#ifdef XBASE_DEBUG
- xbShort DumpMemoFreeChain();
- void DumpMemoHeader() const;
- void DumpMemoBlock() const;
-#endif
-#endif
-
- //! Turn on "real" deletes
- /*!
- This should be done before creating a database (with
- xbDbf::CreateDatatabase()) and thereafter before opening
- a database with xbDbfCreateDatabase().
-
- You cannot "turn on" real deletes once a database has been created
- and records added.
- */
- void RealDeleteOn() { RealDelete = 1; if(fp) ReadHeader(1); }
- /*! Turn off "real" deletes
- */
- void RealDeleteOff() { RealDelete = 0; if(fp) ReadHeader(1); }
- //! Return whether "real" deletes are on or off
- /*!
- Use this to determine if "real deletes" are being used with
-the database.
- */
- xbShort GetRealDelete() { return RealDelete; }
-
-#if defined(XB_INDEX_ANY)
- xbShort IndexCount();
- xbIndex *GetIndex(xbShort indexNum);
-#endif
-
- void Flush();
- virtual const char* GetExtWithDot( bool lower );
-
- private:
-
- xbShort DeleteAll( xbShort );
- void InitVars();
- xbShort PackDatafiles(void (*statusFunc)(xbLong itemNum, xbLong numItems) = 0);
- xbShort ReadHeader( xbShort );
- xbShort WriteHeader( xbShort );
-
-#ifdef XB_MEMO_FIELDS
- xbShort AddMemoData( xbShort FieldNo, xbLong Len, const char * Buf );
- xbShort CreateMemoFile();
- xbShort DeleteMemoField( xbShort FieldNo );
- xbShort GetDbtHeader( xbShort Option );
- xbShort GetMemoBlockSize() { return MemoHeader.BlockSize; }
- xbShort OpenMemoFile();
- xbShort OpenFPTFile();
- xbShort PutMemoData( xbLong StartBlock, xbLong BlocksNeeded,
- xbLong Len, const char * Buf );
- xbShort ReadMemoBlock( xbLong BlockNo, xbShort Option);
- xbShort SetMemoBlockSize( xbShort );
- xbShort UpdateHeadNextNode() const;
- xbShort WriteMemoBlock( xbLong BlockNo, xbShort Option );
- xbShort IsType3Dbt() const { return( Version==(char)0x83 ? 1:0 ); }
- xbShort IsType4Dbt() const
- {return (( Version==(char)0x8B || Version==(char)0x8E ) ? 1:0 );}
- xbShort CreateUniqueDbfName( xbString &, xbString & );
-#endif
-
-
-// xbString DatabaseName;
- xbShort XFV; /* xBASE file version */
- xbShort NoOfFields;
- char DbfStatus; /* 0 = closed
- 1 = open
- 2 = updates pending */
- FILE *fp; /* file pointer */
- xbSchemaRec *SchemaPtr; /* Pointer to field data */
- char *RecBuf; /* Pointer to record buffer */
- char *RecBuf2; /* Pointer to original rec buf */
-
-#ifdef XB_MEMO_FIELDS
- xbString MemofileName; /* memo file name */
- FILE *mfp; /* memo file pointer */
- void *mbb; /* memo block buffer */
- xbMH MemoHeader; /* memo header structure */
- xbShort mfield1; /* memo block field one FF */
- xbShort MStartPos; /* memo start pos of data */
- xbLong MFieldLen; /* memo length of data */
- xbLong NextFreeBlock; /* next free block in free chain */
- xbLong FreeBlockCnt; /* count of free blocks this set */
- xbLong MNextBlockNo; /* free block chain */
- xbLong MNoOfFreeBlocks; /* free block chain */
- xbLong CurMemoBlockNo; /* Current block no loaded */
-#endif
-
-/* Next seven variables are read directly off the database header */
-/* Don't change the order of the following seven items */
- char Version;
- char UpdateYY;
- char UpdateMM;
- char UpdateDD;
-// xbLong NoOfRecs;
-// xbShort HeaderLen;
-// xbShort RecordLen;
-
- xbULong NoOfRecs;
- xbUShort HeaderLen;
- xbUShort RecordLen;
-
-//#ifdef XB_REAL_DELETE
- xbULong FirstFreeRec;
- xbULong RealNumRecs;
-//#endif
-
-// xbIxList * MdxList;
- xbIxList * NdxList;
- xbIxList * FreeIxList;
- xbULong CurRec; /* Current record or zero */
- xbShort AutoLock; /* Auto update option 0 = off */
-
-//#ifdef XB_REAL_DELETE
- xbShort RealDelete; /* real delete option 0 = off */
-//#endif
-
-#ifdef XB_LOCKING_ON
- FILE *xblfh; /* xbase lock file pointer for xbase locking */
- xbShort LockMode; /* lock mode for this table */
- xbString lfn; /* xbase lock file name for xbase locking */
- xbShort TableLockCnt; /* number of table locks */
- xbShort IndexLockCnt; /* no of index locks XB_XBASE_LOCK_MODE only */
-
-#ifdef XB_MEMO_FIELDS
- xbShort MemoLockCnt; /* number of memo file locks */
-#endif
-
- /* old locking stuff */
- xbShort CurLockType; /* current type of file lock */
- xbShort CurLockCount; /* number of current file locks */
- xbULong CurLockedRecNo; /* currently locked record no */
- xbShort CurRecLockType; /* current type of rec lock held (F_RDLOCK or F_WRLCK) */
- xbShort CurRecLockCount; /* number of current record locks */
- xbShort CurMemoLockType; /* current type of memo lock */
- xbShort CurMemoLockCount; /* number of current memo locks */
-#endif
-
-};
-#endif // __XB_DBF_H__
-
-
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