1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
|
/*************** TabDos H Declares Source Code File (.H) ***************/
/* Name: TABDOS.H Version 3.2 */
/* */
/* (C) Copyright to the author Olivier BERTRAND 1999-2012 */
/* */
/* 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"
typedef struct _tabdesc *PTABD; // For friend setting
typedef class TXTFAM *PTXF;
/***********************************************************************/
/* 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;
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;}
PSZ GetOfn(void) {return Ofn;}
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;}
int *GetTo_Pos(void) {return To_Pos;}
virtual bool IsHuge(void) {return Huge;}
// Methods
virtual bool DeleteTableFile(PGLOBAL g);
virtual bool Indexable(void) {return Compressed != 1;}
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);
protected:
virtual bool Erase(char *filename);
// Members
PSZ Fn; /* Path/Name of corresponding file */
PSZ Ofn; /* Base Path/Name of matching index files*/
PIXDEF To_Indx; /* To index definitions blocks */
RECFM Recfm; /* 0:VAR, 1:FIX, 2:BIN, 3:VCT, 6:DBF */
bool Mapped; /* 0: disk file, 1: memory mapped file */
bool Padded; /* true for padded table file */
bool Huge; /* true for files larger than 2GB */
bool Accept; /* true if wrong lines are accepted (DBF)*/
bool Eof; /* true if an EOF (0xA) character exists */
int *To_Pos; /* To array of block starting positions */
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 */
}; // 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 KINDEX;
friend class XINDEX;
friend class DOSCOL;
friend class MAPCOL;
friend class TXTFAM;
friend class DOSFAM;
friend class VCTCOL;
//friend class TDBMUL;
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;}
//inline PCOL *GetKeyCol(void) {return To_Key_Col;}
// Implementation
virtual AMT GetAmType(void) {return Txfp->GetAmType();}
virtual PSZ GetFile(PGLOBAL g) {return Txfp->To_File;}
virtual void SetFile(PGLOBAL g, PSZ fn) {Txfp->To_File = fn;}
virtual RECFM GetFtype(void) {return Ftype;}
virtual bool SkipHeader(PGLOBAL g) {return false;}
virtual void RestoreNrec(void) {Txfp->SetNrec(1);}
virtual PTDB Duplicate(PGLOBAL g)
{return (PTDB)new(g) TDBDOS(g, this);}
// Methods
virtual PTDB CopyOne(PTABS t);
virtual void ResetDB(void) {Txfp->Reset();}
virtual bool IsUsingTemp(PGLOBAL g);
//virtual bool NeedIndexing(PGLOBAL g);
virtual void ResetSize(void) {MaxSize = Cardinal = -1;}
virtual int ResetTableOpt(PGLOBAL g, 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 g, char *opmode) {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(PGLOBAL g);
// Optimization routines
// void ResetBlockFilter(PGLOBAL g);
int MakeIndex(PGLOBAL g, PIXDEF pxdf, bool add);
// bool GetDistinctColumnValues(PGLOBAL g, int nrec);
protected:
// 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
int Cardinal; // Table Cardinality
RECFM Ftype; // File type: 0-var 1-fixed 2-binary (VCT)
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, PSZ am = "DOS");
DOSCOL(DOSCOL *colp, PTDB tdbp); // Constructor used in copy process
// Implementation
virtual int GetAmType(void) {return TYPE_AM_DOS;}
//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 void SetTo_Val(PVAL valp) {To_Val = valp;}
//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);
virtual void Print(PGLOBAL g, FILE *, uint);
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) {}
// 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 write operations
bool Ldz; // True if field contains leading zeros
bool Nod; // True if no decimal point
int Dcm; // Last Dcm digits are decimals
//int Clustered; // 0:No 1:Yes
//int Sorted; // 0:No 1:Asc (2:Desc - NIY)
int Deplac; // Offset in dos_buf
//int Ndv; // Number of distinct values
//int Nbm; // Number of uint in bitmap
}; // end of class DOSCOL
#endif // __TABDOS_H
|
