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Adding the CONNECT storage engine sources.

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Alexander Barkov 2013-01-18 19:21:44 +04:00
commit d7143a4160
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storage/connect/tabfmt.h Normal file
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/*************** TabFmt H Declares Source Code File (.H) ***************/
/* Name: TABFMT.H Version 2.2 */
/* */
/* (C) Copyright to the author Olivier BERTRAND 2001-2012 */
/* */
/* This file contains the CSV and FMT classes declares. */
/***********************************************************************/
#include "xtable.h" // Base class declares
#include "tabdos.h"
//pedef struct _tabdesc *PTABD; // For friend setting
typedef class TDBFMT *PTDBFMT;
/***********************************************************************/
/* CSV table. */
/***********************************************************************/
class DllExport CSVDEF : public DOSDEF { /* Logical table description */
friend class TDBCSV;
//friend class TDBMCV;
public:
// Constructor
CSVDEF(void);
// Implementation
virtual const char *GetType(void) {return "CSV";}
char GetSep(void) {return Sep;}
char GetQot(void) {return Qot;}
// Methods
virtual bool DefineAM(PGLOBAL g, LPCSTR am, int poff);
virtual PTDB GetTable(PGLOBAL g, MODE mode);
protected:
// Members
bool Fmtd; /* true for formatted files */
//bool Accept; /* true if wrong lines are accepted */
bool Header; /* true if first line contains headers */
//int Maxerr; /* Maximum number of bad records */
int Quoted; /* Quoting level for quoted fields */
char Sep; /* Separator for standard CSV files */
char Qot; /* Character for quoted strings */
}; // end of CSVDEF
/***********************************************************************/
/* This is the DOS/UNIX Access Method class declaration for files */
/* that are CSV files with columns separated by the Sep character. */
/***********************************************************************/
class TDBCSV : public TDBDOS {
friend class CSVCOL;
public:
// Constructor
TDBCSV(PCSVDEF tdp, PTXF txfp);
TDBCSV(PGLOBAL g, PTDBCSV tdbp);
// Implementation
virtual AMT GetAmType(void) {return TYPE_AM_CSV;}
virtual PTDB Duplicate(PGLOBAL g)
{return (PTDB)new(g) TDBCSV(g, this);}
// Methods
virtual PTDB CopyOne(PTABS t);
//virtual bool IsUsingTemp(PGLOBAL g);
virtual int GetBadLines(void) {return (int)Nerr;}
// Database routines
virtual PCOL MakeCol(PGLOBAL g, PCOLDEF cdp, PCOL cprec, int n);
virtual bool OpenDB(PGLOBAL g);
virtual int WriteDB(PGLOBAL g);
virtual int CheckWrite(PGLOBAL g);
virtual int ReadBuffer(PGLOBAL g); // Physical file read
// Specific routines
virtual int EstimatedLength(PGLOBAL g);
virtual bool SkipHeader(PGLOBAL g);
virtual bool CheckErr(void);
protected:
// Members
PSZ *Field; // Field to write to current line
int *Offset; // Column offsets for current record
int *Fldlen; // Column field length for current record
bool *Fldtyp; // true for numeric fields
int Fields; // Number of fields to handle
int Nerr; // Number of bad records
int Maxerr; // Maximum number of bad records
int Quoted; // Quoting level for quoted fields
bool Accept; // true if bad lines are accepted
bool Header; // true if first line contains column headers
char Sep; // Separator
char Qot; // Quoting character
}; // end of class TDBCSV
/***********************************************************************/
/* Class CSVCOL: CSV access method column descriptor. */
/* This A.M. is used for Comma Separated V(?) files. */
/***********************************************************************/
class CSVCOL : public DOSCOL {
friend class TDBCSV;
friend class TDBFMT;
public:
// Constructors
CSVCOL(PGLOBAL g, PCOLDEF cdp, PTDB tdbp, PCOL cprec, int i);
CSVCOL(CSVCOL *colp, PTDB tdbp); // Constructor used in copy process
// Implementation
virtual int GetAmType() {return TYPE_AM_CSV;}
// Methods
virtual bool VarSize(void);
virtual void ReadColumn(PGLOBAL g);
virtual void WriteColumn(PGLOBAL g);
// void Print(FILE *, uint);
protected:
// Default constructor not to be used
CSVCOL(void) {}
// Members
int Fldnum; // Field ordinal number (0 based)
}; // end of class CSVCOL
/***********************************************************************/
/* This is the DOS/UNIX Access Method class declaration for files */
/* whose record format is described by a Format keyword. */
/***********************************************************************/
class TDBFMT : public TDBCSV {
friend class CSVCOL;
//friend class FMTCOL;
public:
// Standard constructor
TDBFMT(PCSVDEF tdp, PTXF txfp) : TDBCSV(tdp, txfp)
{FldFormat = NULL; To_Fld = NULL; FmtTest = NULL; Linenum = 0;}
// Copy constructor
TDBFMT(PGLOBAL g, PTDBFMT tdbp);
// Implementation
virtual AMT GetAmType(void) {return TYPE_AM_FMT;}
virtual PTDB Duplicate(PGLOBAL g)
{return (PTDB)new(g) TDBFMT(g, this);}
// Methods
virtual PTDB CopyOne(PTABS t);
// Database routines
virtual PCOL MakeCol(PGLOBAL g, PCOLDEF cdp, PCOL cprec, int n);
//virtual int GetMaxSize(PGLOBAL g);
virtual bool OpenDB(PGLOBAL g);
virtual int WriteDB(PGLOBAL g);
//virtual int CheckWrite(PGLOBAL g);
virtual int ReadBuffer(PGLOBAL g); // Physical file read
// Specific routines
virtual int EstimatedLength(PGLOBAL g);
protected:
// Members
PSZ *FldFormat; // Field read format
void *To_Fld; // To field test buffer
int *FmtTest; // Test on ending by %n or %m
int Linenum; // Last read line
}; // end of class TDBFMT
/* ------------------------- End of TabFmt.H ------------------------- */