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
247
248
249
250
251
|
/************* TabZip C++ Program Source Code File (.CPP) **************/
/* PROGRAM NAME: TABZIP Version 1.0 */
/* (C) Copyright to the author Olivier BERTRAND 2016 */
/* This program are the TABZIP class DB execution routines. */
/***********************************************************************/
/***********************************************************************/
/* Include relevant sections of the MariaDB header file. */
/***********************************************************************/
#include <my_global.h>
/***********************************************************************/
/* Include application header files: */
/* global.h is header containing all global declarations. */
/* plgdbsem.h is header containing the DB application declarations. */
/* (x)table.h is header containing the TDBASE declarations. */
/* tabzip.h is header containing the TABZIP classes declarations. */
/***********************************************************************/
#include "global.h"
#include "plgdbsem.h"
#include "xtable.h"
#include "filamtxt.h"
#include "filamzip.h"
#include "resource.h" // for IDS_COLUMNS
#include "tabdos.h"
#include "tabmul.h"
#include "tabzip.h"
/* -------------------------- Class ZIPDEF --------------------------- */
/************************************************************************/
/* DefineAM: define specific AM block values. */
/************************************************************************/
bool ZIPDEF::DefineAM(PGLOBAL g, LPCSTR am, int poff)
{
//target = GetStringCatInfo(g, "Target", NULL);
return DOSDEF::DefineAM(g, "ZIP", poff);
} // end of DefineAM
/***********************************************************************/
/* GetTable: makes a new Table Description Block. */
/***********************************************************************/
PTDB ZIPDEF::GetTable(PGLOBAL g, MODE m)
{
PTDB tdbp = NULL;
tdbp = new(g) TDBZIP(this);
if (Multiple)
tdbp = new(g) TDBMUL(tdbp);
return tdbp;
} // end of GetTable
/* ------------------------------------------------------------------- */
/***********************************************************************/
/* Implementation of the TDBZIP class. */
/***********************************************************************/
TDBZIP::TDBZIP(PZIPDEF tdp) : TDBASE(tdp)
{
zipfile = NULL;
zfn = tdp->Fn;
//target = tdp->target;
nexterr = UNZ_OK;
} // end of TDBZIP standard constructor
/***********************************************************************/
/* Allocate ZIP column description block. */
/***********************************************************************/
PCOL TDBZIP::MakeCol(PGLOBAL g, PCOLDEF cdp, PCOL cprec, int n)
{
return new(g) ZIPCOL(cdp, this, cprec, n);
} // end of MakeCol
/***********************************************************************/
/* open a zip file. */
/* param: filename path and the filename of the zip file to open. */
/* return: true if open, false otherwise. */
/***********************************************************************/
bool TDBZIP::open(PGLOBAL g, const char *fn)
{
char filename[_MAX_PATH];
PlugSetPath(filename, fn, GetPath());
if (!zipfile && !(zipfile = unzOpen64(filename)))
snprintf(g->Message, sizeof(g->Message), "Zipfile open error");
return (zipfile == NULL);
} // end of open
/***********************************************************************/
/* Close the zip file. */
/***********************************************************************/
void TDBZIP::close()
{
if (zipfile) {
unzClose(zipfile);
zipfile = NULL;
} // endif zipfile
} // end of close
/***********************************************************************/
/* ZIP Cardinality: returns table size in number of rows. */
/***********************************************************************/
int TDBZIP::Cardinality(PGLOBAL g)
{
if (!g)
return 1;
else if (Cardinal < 0) {
if (!open(g, zfn)) {
unz_global_info64 ginfo;
int err = unzGetGlobalInfo64(zipfile, &ginfo);
Cardinal = (err == UNZ_OK) ? (int)ginfo.number_entry : 0;
} else
Cardinal = 10; // Dummy for multiple tables
} // endif Cardinal
return Cardinal;
} // end of Cardinality
/***********************************************************************/
/* ZIP GetMaxSize: returns file size estimate in number of lines. */
/***********************************************************************/
int TDBZIP::GetMaxSize(PGLOBAL g)
{
if (MaxSize < 0)
MaxSize = Cardinality(g);
return MaxSize;
} // end of GetMaxSize
/***********************************************************************/
/* ZIP Access Method opening routine. */
/***********************************************************************/
bool TDBZIP::OpenDB(PGLOBAL g)
{
if (Use == USE_OPEN)
// Table already open
return false;
Use = USE_OPEN; // To be clean
return open(g, zfn);
} // end of OpenDB
/***********************************************************************/
/* ReadDB: Data Base read routine for ZIP access method. */
/***********************************************************************/
int TDBZIP::ReadDB(PGLOBAL g)
{
if (nexterr == UNZ_END_OF_LIST_OF_FILE)
return RC_EF;
else if (nexterr != UNZ_OK) {
snprintf(g->Message, sizeof(g->Message), "unzGoToNextFile error %d", nexterr);
return RC_FX;
} // endif nexterr
int err = unzGetCurrentFileInfo64(zipfile, &finfo, fn,
sizeof(fn), NULL, 0, NULL, 0);
if (err != UNZ_OK) {
snprintf(g->Message, sizeof(g->Message), "unzGetCurrentFileInfo64 error %d", err);
return RC_FX;
} // endif err
nexterr = unzGoToNextFile(zipfile);
return RC_OK;
} // end of ReadDB
/***********************************************************************/
/* WriteDB: Data Base write routine for ZIP access method. */
/***********************************************************************/
int TDBZIP::WriteDB(PGLOBAL g)
{
strcpy(g->Message, "ZIP tables are read only");
return RC_FX;
} // end of WriteDB
/***********************************************************************/
/* Data Base delete line routine for ZIP access method. */
/***********************************************************************/
int TDBZIP::DeleteDB(PGLOBAL g, int irc)
{
strcpy(g->Message, "Delete not enabled for ZIP tables");
return RC_FX;
} // end of DeleteDB
/***********************************************************************/
/* Data Base close routine for ZIP access method. */
/***********************************************************************/
void TDBZIP::CloseDB(PGLOBAL g)
{
close();
nexterr = UNZ_OK; // For multiple tables
Use = USE_READY; // Just to be clean
} // end of CloseDB
/* ---------------------------- ZIPCOL ------------------------------- */
/***********************************************************************/
/* ZIPCOL public constructor. */
/***********************************************************************/
ZIPCOL::ZIPCOL(PCOLDEF cdp, PTDB tdbp, PCOL cprec, int i, PCSZ am)
: COLBLK(cdp, tdbp, i)
{
if (cprec) {
Next = cprec->GetNext();
cprec->SetNext(this);
} else {
Next = tdbp->GetColumns();
tdbp->SetColumns(this);
} // endif cprec
Tdbz = (TDBZIP*)tdbp;
flag = cdp->GetOffset();
} // end of ZIPCOL constructor
/***********************************************************************/
/* ReadColumn: */
/***********************************************************************/
void ZIPCOL::ReadColumn(PGLOBAL g)
{
switch (flag) {
case 1:
Value->SetValue(Tdbz->finfo.compressed_size);
break;
case 2:
Value->SetValue(Tdbz->finfo.uncompressed_size);
break;
case 3:
Value->SetValue((int)Tdbz->finfo.compression_method);
break;
case 4:
Tdbz->finfo.tmu_date.tm_year -= 1900;
if (((DTVAL*)Value)->MakeTime((tm*)&Tdbz->finfo.tmu_date))
Value->SetNull(true);
Tdbz->finfo.tmu_date.tm_year += 1900;
break;
default:
Value->SetValue_psz((PSZ)Tdbz->fn);
} // endswitch flag
} // end of ReadColumn
/* -------------------------- End of tabzip -------------------------- */
|
