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/*************** TabDos H Declares Source Code File (.H) ***************/
/* Name: TABDOS.H Version 3.3 */
/* */
/* (C) Copyright to the author Olivier BERTRAND 1999-2015 */
/* */
/* This file contains the DOS classes declares. */
/***********************************************************************/
#ifndef __TABDOS_H
#define __TABDOS_H
#include "xtable.h" // Table base class declares
#include "colblk.h" // Column base class declares
#include "xindex.h"
#include "filter.h"
//pedef struct _tabdesc *PTABD; // For friend setting
typedef class TXTFAM *PTXF;
typedef class BLOCKFILTER *PBF;
typedef class BLOCKINDEX *PBX;
/***********************************************************************/
/* DOS table. */
/***********************************************************************/
class DllExport DOSDEF : public TABDEF { /* Logical table description */
friend class OEMDEF;
friend class TDBDOS;
friend class TDBFIX;
friend class TXTFAM;
friend class DBFBASE;
friend class UNZIPUTL;
friend class JSONCOL;
friend class TDBDCL;
public:
// Constructor
DOSDEF(void);
// Implementation
virtual AMT GetDefType(void) {return TYPE_AM_DOS;}
virtual const char *GetType(void) {return "DOS";}
virtual PIXDEF GetIndx(void) {return To_Indx;}
virtual void SetIndx(PIXDEF xdp) {To_Indx = xdp;}
virtual bool IsHuge(void) {return Huge;}
PCSZ GetFn(void) {return Fn;}
PCSZ GetOfn(void) {return Ofn;}
PCSZ GetEntry(void) {return Entry;}
bool GetMul(void) {return Mulentries;}
bool GetAppend(void) {return Append;}
void SetBlock(int block) { Block = block; }
int GetBlock(void) {return Block;}
int GetLast(void) {return Last;}
void SetLast(int last) {Last = last;}
int GetLrecl(void) {return Lrecl;}
void SetLrecl(int lrecl) {Lrecl = lrecl;}
bool GetPadded(void) {return Padded;}
bool GetEof(void) {return Eof;}
int GetBlksize(void) {return Blksize;}
int GetEnding(void) {return Ending;}
bool IsOptimized(void) {return (Optimized == 1);}
void SetOptimized(int opt) {Optimized = opt;}
void SetAllocBlks(int blks) {AllocBlks = blks;}
int GetAllocBlks(void) {return AllocBlks;}
int *GetTo_Pos(void) {return To_Pos;}
// Methods
virtual int Indexable(void)
{return (!Multiple && !Mulentries && Compressed != 1) ? 1 : 0;}
virtual bool DeleteIndexFile(PGLOBAL g, PIXDEF pxdf);
virtual bool DefineAM(PGLOBAL g, LPCSTR am, int poff);
virtual PTDB GetTable(PGLOBAL g, MODE mode);
bool InvalidateIndex(PGLOBAL g);
bool GetOptFileName(PGLOBAL g, char *filename);
void RemoveOptValues(PGLOBAL g);
protected:
//virtual bool Erase(char *filename);
// Members
PCSZ Fn; /* Path/Name of corresponding file */
PCSZ Ofn; /* Base Path/Name of matching index files*/
PCSZ Entry; /* Zip entry name or pattern */
PCSZ Pwd; /* Zip password */
PIXDEF To_Indx; /* To index definitions blocks */
bool Mapped; /* 0: disk file, 1: memory mapped file */
bool Zipped; /* true for zipped table file */
bool Mulentries; /* true for multiple entries */
bool Append; /* Used when creating zipped table */
bool Padded; /* true for padded table file */
bool Huge; /* true for files larger than 2GB */
bool Accept; /* true if wrong lines are accepted */
bool Eof; /* true if an EOF (0xA) character exists */
int *To_Pos; /* To array of block starting positions */
int Optimized; /* 0: No, 1:Yes, 2:Redo optimization */
int AllocBlks; /* Number of suballocated opt blocks */
int Compressed; /* 0: No, 1: gz, 2:zlib compressed file */
int Lrecl; /* Size of biggest record */
int AvgLen; /* Average size of records */
int Block; /* Number de blocks of FIX/VCT tables */
int Last; /* Number of elements of last block */
int Blksize; /* Size of padded blocks */
int Maxerr; /* Maximum number of bad records (DBF) */
int ReadMode; /* Specific to DBF */
int Ending; /* Length of end of lines */
char Teds; /* Binary table default endian setting */
}; // end of DOSDEF
/***********************************************************************/
/* This is the DOS/UNIX Access Method class declaration for files */
/* that are standard files with columns starting at fixed offset. */
/* The last column (and record) is of variable length. */
/***********************************************************************/
class DllExport TDBDOS : public TDBASE {
friend class XINDEX;
friend class DOSCOL;
friend class MAPCOL;
friend class TXTFAM;
friend class DOSFAM;
friend class VCTCOL;
friend RCODE CntDeleteRow(PGLOBAL, PTDB, bool);
public:
// Constructors
TDBDOS(PDOSDEF tdp, PTXF txfp);
TDBDOS(PGLOBAL g, PTDBDOS tdbp);
// Inline functions
inline void SetTxfp(PTXF txfp) {Txfp = txfp; Txfp->SetTdbp(this);}
inline PTXF GetTxfp(void) {return Txfp;}
inline char *GetLine(void) {return To_Line;}
inline int GetCurBlk(void) {return Txfp->GetCurBlk();}
inline void SetLine(char *toline) {To_Line = toline;}
inline void IncLine(int inc) {To_Line += inc;}
inline bool IsRead(void) {return Txfp->IsRead;}
inline PXOB *GetLink(void) {return To_Link;}
// Implementation
virtual AMT GetAmType(void) {return Txfp->GetAmType();}
virtual PCSZ GetFile(PGLOBAL) {return Txfp->To_File;}
virtual void SetFile(PGLOBAL, PCSZ fn) {Txfp->To_File = fn;}
virtual void SetAbort(bool b) {Abort = b;}
virtual RECFM GetFtype(void) {return Ftype;}
virtual bool SkipHeader(PGLOBAL) {return false;}
virtual void RestoreNrec(void) {Txfp->SetNrec(1);}
virtual PTDB Duplicate(PGLOBAL g)
{return (PTDB)new(g) TDBDOS(g, this);}
// Methods
virtual PTDB Clone(PTABS t);
virtual void ResetDB(void) {Txfp->Reset();}
virtual bool IsUsingTemp(PGLOBAL g);
virtual bool IsIndexed(void) {return Indxd;}
virtual void ResetSize(void) {MaxSize = Cardinal = -1;}
virtual int ResetTableOpt(PGLOBAL g, bool dop, bool dox);
virtual int MakeBlockValues(PGLOBAL g);
virtual bool SaveBlockValues(PGLOBAL g);
virtual bool GetBlockValues(PGLOBAL g);
virtual PBF InitBlockFilter(PGLOBAL g, PFIL filp);
//virtual PBX InitBlockIndex(PGLOBAL g);
virtual int TestBlock(PGLOBAL g);
virtual void PrintAM(FILE *f, char *m);
// Database routines
virtual PCOL MakeCol(PGLOBAL g, PCOLDEF cdp, PCOL cprec, int n);
virtual char *GetOpenMode(PGLOBAL, char*) {return NULL;}
virtual int GetFileLength(PGLOBAL g) {return Txfp->GetFileLength(g);}
virtual int GetProgMax(PGLOBAL g);
virtual int GetProgCur(void);
//virtual int GetAffectedRows(void) {return Txfp->GetDelRows();}
virtual int GetRecpos(void) {return Txfp->GetPos();}
virtual bool SetRecpos(PGLOBAL g, int recpos)
{return Txfp->SetPos(g, recpos);}
virtual int RowNumber(PGLOBAL g, bool b = false);
virtual int Cardinality(PGLOBAL g);
virtual int GetMaxSize(PGLOBAL g);
virtual bool OpenDB(PGLOBAL g);
virtual int ReadDB(PGLOBAL g);
virtual int WriteDB(PGLOBAL g);
virtual int DeleteDB(PGLOBAL g, int irc);
virtual void CloseDB(PGLOBAL g);
virtual int ReadBuffer(PGLOBAL g) {return Txfp->ReadBuffer(g);}
// Specific routine
virtual int EstimatedLength(void);
// Optimization routines
virtual int MakeIndex(PGLOBAL g, PIXDEF pxdf, bool add);
bool InitialyzeIndex(PGLOBAL g, PIXDEF xdp, bool sorted);
void ResetBlockFilter(PGLOBAL g);
bool GetDistinctColumnValues(PGLOBAL g, int nrec);
protected:
virtual bool PrepareWriting(PGLOBAL g);
PBF CheckBlockFilari(PGLOBAL g, PXOB *arg, int op, bool *cnv);
// Members
PTXF Txfp; // To the File access method class
//PBX To_BlkIdx; // To index test block
PBF To_BlkFil; // To evaluation block filter
PFIL SavFil; // Saved hidden filter
char *To_Line; // Points to current processed line
bool Abort; // TRUE when aborting UPDATE/DELETE
bool Indxd; // TRUE for indexed UPDATE/DELETE
int Lrecl; // Logical Record Length
int AvgLen; // Logical Record Average Length
//int Xeval; // BlockTest return value
int Beval; // BlockEval return value
}; // end of class TDBDOS
/***********************************************************************/
/* Class DOSCOL: DOS access method column descriptor. */
/* This A.M. is used for text file tables under operating systems */
/* DOS, OS2, UNIX, WIN16 and WIN32. */
/***********************************************************************/
class DllExport DOSCOL : public COLBLK {
friend class TDBDOS;
friend class TDBFIX;
public:
// Constructors
DOSCOL(PGLOBAL g, PCOLDEF cdp, PTDB tp, PCOL cp, int i, PCSZ am = "DOS");
DOSCOL(DOSCOL *colp, PTDB tdbp); // Constructor used in copy process
// Implementation
virtual int GetAmType(void) {return TYPE_AM_DOS;}
virtual void SetTo_Val(PVAL valp) {To_Val = valp;}
virtual int GetClustered(void) {return Clustered;}
virtual int IsClustered(void) {return (Clustered &&
((PDOSDEF)(((PTDBDOS)To_Tdb)->To_Def))->IsOptimized());}
virtual int IsSorted(void) {return Sorted;}
virtual PVBLK GetMin(void) {return Min;}
virtual PVBLK GetMax(void) {return Max;}
virtual int GetNdv(void) {return Ndv;}
virtual int GetNbm(void) {return Nbm;}
virtual PVBLK GetBmap(void) {return Bmap;}
virtual PVBLK GetDval(void) {return Dval;}
// Methods
virtual bool VarSize(void);
virtual bool SetBuffer(PGLOBAL g, PVAL value, bool ok, bool check);
virtual void ReadColumn(PGLOBAL g);
virtual void WriteColumn(PGLOBAL g);
protected:
virtual bool SetMinMax(PGLOBAL g);
virtual bool SetBitMap(PGLOBAL g);
bool CheckSorted(PGLOBAL g);
bool AddDistinctValue(PGLOBAL g);
// Default constructor not to be used
DOSCOL(void) = default;
// Members
PVBLK Min; // Array of block min values
PVBLK Max; // Array of block max values
PVBLK Bmap; // Array of block bitmap values
PVBLK Dval; // Array of column distinct values
PVAL To_Val; // To value used for Update/Insert
PVAL OldVal; // The previous value of the object.
char *Buf; // Buffer used in read/write operations
char Dsp; // The decimal separator
bool Ldz; // True if field contains leading zeros
bool Nod; // True if no decimal point
int Dcm; // Last Dcm digits are decimals
int Deplac; // Offset in dos_buf
int Clustered; // 0:No 1:Yes
int Sorted; // 0:No 1:Asc (2:Desc - NIY)
int Ndv; // Number of distinct values
int Nbm; // Number of uint in bitmap
}; // end of class DOSCOL
#endif // __TABDOS_H
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