summaryrefslogtreecommitdiff
path: root/storage/connect/filamzip.cpp
blob: eb06ee7ad1eee8e807b5c8ea1daa9c8cb0e2eb0d (plain)
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
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
/*********** File AM Zip C++ Program Source Code File (.CPP) ***********/
/* PROGRAM NAME: FILAMZIP                                              */
/* -------------                                                       */
/*  Version 1.3                                                        */
/*                                                                     */
/* COPYRIGHT:                                                          */
/* ----------                                                          */
/*  (C) Copyright to the author Olivier BERTRAND          2016-2017    */
/*                                                                     */
/* WHAT THIS PROGRAM DOES:                                             */
/* -----------------------                                             */
/*  This program are the ZIP file access method classes.               */
/*                                                                     */
/***********************************************************************/

/***********************************************************************/
/*  Include relevant sections of the System header files.              */
/***********************************************************************/
#include "my_global.h"
#if !defined(__WIN__)
#if defined(UNIX)
#include <fnmatch.h>
#include <errno.h>
#include <dirent.h>
#include <unistd.h>
#else    // !UNIX
#include <io.h>
#endif  // !UNIX
#include <fcntl.h>
#endif  // !__WIN__
#include <time.h>

/***********************************************************************/
/*  Include application header files:                                  */
/*  global.h    is header containing all global declarations.          */
/*  plgdbsem.h  is header containing the DB application declarations.  */
/***********************************************************************/
#include "global.h"
#include "plgdbsem.h"
#include "osutil.h"
#include "filamtxt.h"
#include "tabfmt.h"
//#include "tabzip.h"
#include "filamzip.h"

#define WRITEBUFFERSIZE (16384)

bool ZipLoadFile(PGLOBAL g, PCSZ zfn, PCSZ fn, PCSZ entry, bool append, bool mul);

/***********************************************************************/
/*  Compress a file in zip when creating a table.                      */
/***********************************************************************/
static bool ZipFile(PGLOBAL g, ZIPUTIL *zutp, PCSZ fn, PCSZ entry, char *buf)
{
	int   rc = RC_OK, size_read, size_buf = WRITEBUFFERSIZE;
	FILE *fin;

	if (zutp->addEntry(g, entry))
		return true;
	else if (!(fin = fopen(fn, "rb"))) {
		sprintf(g->Message, "error in opening %s for reading", fn);
		return true;
	} // endif fin

	do {
		size_read = (int)fread(buf, 1, size_buf, fin);

		if (size_read < size_buf && feof(fin) == 0) {
			sprintf(g->Message, "error in reading %s", fn);
			rc = RC_FX;
		}	// endif size_read

		if (size_read > 0) {
			rc = zutp->writeEntry(g, buf, size_read);

			if (rc == RC_FX)
				sprintf(g->Message, "error in writing %s in the zipfile", fn);

		}	// endif size_read

	} while (rc == RC_OK && size_read > 0);

	fclose(fin);
	zutp->closeEntry();
	return rc != RC_OK;
}	// end of ZipFile

/***********************************************************************/
/*  Find and Compress several files in zip when creating a table.      */
/***********************************************************************/
static bool ZipFiles(PGLOBAL g, ZIPUTIL *zutp, PCSZ pat, char *buf)
{
	char filename[_MAX_PATH];
	int  rc;

	/*********************************************************************/
	/*  pat is a multiple file name with wildcard characters             */
	/*********************************************************************/
	strcpy(filename, pat);

#if defined(__WIN__)
	char   drive[_MAX_DRIVE], direc[_MAX_DIR];
	WIN32_FIND_DATA FileData;
	HANDLE hSearch;

	_splitpath(filename, drive, direc, NULL, NULL);

	// Start searching files in the target directory.
	hSearch = FindFirstFile(filename, &FileData);

	if (hSearch == INVALID_HANDLE_VALUE) {
		rc = GetLastError();

		if (rc != ERROR_FILE_NOT_FOUND) {
			FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
				NULL, GetLastError(), 0, (LPTSTR)&filename, sizeof(filename), NULL);
			sprintf(g->Message, MSG(BAD_FILE_HANDLE), filename);
			return true;
		} else {
			strcpy(g->Message, "Cannot find any file to load");
			return true;
		}	// endif rc

	} // endif hSearch

	while (true) {
		if (!(FileData.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)) {
			strcat(strcat(strcpy(filename, drive), direc), FileData.cFileName);

			if (ZipFile(g, zutp, filename, FileData.cFileName, buf)) {
				FindClose(hSearch);
				return true;
			} // endif ZipFile

		} // endif dwFileAttributes

		if (!FindNextFile(hSearch, &FileData)) {
			rc = GetLastError();

			if (rc != ERROR_NO_MORE_FILES) {
				sprintf(g->Message, MSG(NEXT_FILE_ERROR), rc);
				FindClose(hSearch);
				return true;
			} // endif rc

			break;
		} // endif FindNextFile

	} // endwhile n

	// Close the search handle.
	if (!FindClose(hSearch)) {
		strcpy(g->Message, MSG(SRCH_CLOSE_ERR));
		return true;
	} // endif FindClose

#else   // !__WIN__
	struct stat fileinfo;
	char   fn[FN_REFLEN], direc[FN_REFLEN], pattern[FN_HEADLEN], ftype[FN_EXTLEN];
	DIR   *dir;
	struct dirent *entry;

	_splitpath(filename, NULL, direc, pattern, ftype);
	strcat(pattern, ftype);

	// Start searching files in the target directory.
	if (!(dir = opendir(direc))) {
		sprintf(g->Message, MSG(BAD_DIRECTORY), direc, strerror(errno));
		return true;
	} // endif dir

	while ((entry = readdir(dir))) {
		strcat(strcpy(fn, direc), entry->d_name);

		if (lstat(fn, &fileinfo) < 0) {
			sprintf(g->Message, "%s: %s", fn, strerror(errno));
			return true;
		} else if (!S_ISREG(fileinfo.st_mode))
			continue;      // Not a regular file (should test for links)

		/*******************************************************************/
		/*  Test whether the file name matches the table name filter.      */
		/*******************************************************************/
		if (fnmatch(pattern, entry->d_name, 0))
			continue;      // Not a match

		strcat(strcpy(filename, direc), entry->d_name);

		if (ZipFile(g, zutp, filename, entry->d_name, buf)) {
			closedir(dir);
			return true;
		} // endif ZipFile

	} // endwhile readdir

	// Close the dir handle.
	closedir(dir);
#endif  // !__WIN__

	return false;
}	// end of ZipFiles

/***********************************************************************/
/*  Load and Compress a file in zip when creating a table.             */
/***********************************************************************/
bool ZipLoadFile(PGLOBAL g, PCSZ zfn, PCSZ fn, PCSZ entry, bool append, bool mul)
{
	char    *buf;
	bool     err;
	ZIPUTIL *zutp = new(g) ZIPUTIL(NULL);

	if (zutp->open(g, zfn, append))
		return true;

	buf = (char*)PlugSubAlloc(g, NULL, WRITEBUFFERSIZE);

	if (mul)
		err = ZipFiles(g, zutp, fn, buf);
	else
	  err = ZipFile(g, zutp, fn, entry, buf);

	zutp->close();
	return err;
}	// end of ZipLoadFile

/* -------------------------- class ZIPUTIL -------------------------- */

/***********************************************************************/
/*  Constructors.                                                      */
/***********************************************************************/
ZIPUTIL::ZIPUTIL(PCSZ tgt)
{
	zipfile = NULL;
	target = tgt;
	fp = NULL;
	entryopen = false;
} // end of ZIPUTIL standard constructor

#if 0
ZIPUTIL::ZIPUTIL(ZIPUTIL *zutp)
{
	zipfile = zutp->zipfile;
	target = zutp->target;
	fp = zutp->fp;
	entryopen = zutp->entryopen;
} // end of UNZIPUTL copy constructor
#endif // 0

/***********************************************************************/
/*  Fill the zip time structure																				 */
/*  param: tmZip	time structure to be filled													 */
/***********************************************************************/
void ZIPUTIL::getTime(tm_zip& tmZip)
{
	time_t rawtime;
	time(&rawtime);
	struct tm *timeinfo = localtime(&rawtime);
	tmZip.tm_sec = timeinfo->tm_sec;
	tmZip.tm_min = timeinfo->tm_min;
	tmZip.tm_hour = timeinfo->tm_hour;
	tmZip.tm_mday = timeinfo->tm_mday;
	tmZip.tm_mon = timeinfo->tm_mon;
	tmZip.tm_year = timeinfo->tm_year;
}	// end of getTime

/***********************************************************************/
/*  open a zip file for deflate.																			 */
/*  param: filename	path and the filename of the zip file to open.		 */
/*	append:		set true to append the zip file													 */
/*  return:	true if open, false otherwise.														 */
/***********************************************************************/
bool ZIPUTIL::open(PGLOBAL g, PCSZ filename, bool append)
{
	if (!zipfile && !(zipfile = zipOpen64(filename,
		                               append ? APPEND_STATUS_ADDINZIP
																	        : APPEND_STATUS_CREATE)))
		sprintf(g->Message, "Zipfile open error on %s", filename);

	return (zipfile == NULL);
}	// end of open

/***********************************************************************/
/*  Close the zip file.																								 */
/***********************************************************************/
void ZIPUTIL::close()
{
	if (zipfile) {
		closeEntry();
		zipClose(zipfile, 0);
		zipfile = NULL;
	}	// endif zipfile

}	// end of close

/***********************************************************************/
/*  OpenTableFile: Open a DOS/UNIX table file from a ZIP file.         */
/***********************************************************************/
bool ZIPUTIL::OpenTable(PGLOBAL g, MODE mode, PCSZ fn, bool append)
{
	/*********************************************************************/
	/*  The file will be compressed.                                     */
	/*********************************************************************/
	if (mode == MODE_INSERT) {
		bool b = open(g, fn, append);

		if (!b) {
			if (addEntry(g, target))
				return true;

			/*****************************************************************/
			/*  Link a Fblock. This make possible to automatically close it  */
			/*  in case of error g->jump.                                    */
			/*****************************************************************/
			PDBUSER dbuserp = (PDBUSER)g->Activityp->Aptr;

			fp = (PFBLOCK)PlugSubAlloc(g, NULL, sizeof(FBLOCK));
			fp->Type = TYPE_FB_ZIP;
			fp->Fname = PlugDup(g, fn);
			fp->Next = dbuserp->Openlist;
			dbuserp->Openlist = fp;
			fp->Count = 1;
			fp->Length = 0;
			fp->Memory = NULL;
			fp->Mode = mode;
			fp->File = this;
			fp->Handle = 0;
		} else
			return true;

	} else {
		strcpy(g->Message, "Only INSERT mode supported for ZIPPING files");
		return true;
	}	// endif mode

	return false;
} // end of OpenTableFile

/***********************************************************************/
/*  Add target in zip file.				   		      												 */
/***********************************************************************/
bool ZIPUTIL::addEntry(PGLOBAL g, PCSZ entry)
{
	//?? we dont need the stinking time
	zip_fileinfo zi = { {0, 0, 0, 0, 0, 0}, 0, 0, 0 };

	getTime(zi.tmz_date);
	target = entry;

	int err = zipOpenNewFileInZip(zipfile, target, &zi,
		        NULL, 0, NULL, 0, NULL, Z_DEFLATED, Z_DEFAULT_COMPRESSION);

	return !(entryopen = (err == ZIP_OK));
}	// end of addEntry

/***********************************************************************/
/*  writeEntry: Deflate the buffer to the zip file.                    */
/***********************************************************************/
int ZIPUTIL::writeEntry(PGLOBAL g, char *buf, int len)
{
	if (zipWriteInFileInZip(zipfile, buf, len) < 0) {
		sprintf(g->Message, "Error writing %s in the zipfile", target);
		return RC_FX;
	}	// endif zipWriteInFileInZip

	return RC_OK;
} // end of writeEntry

/***********************************************************************/
/*  Close the zip file.																								 */
/***********************************************************************/
void ZIPUTIL::closeEntry()
{
	if (entryopen) {
		zipCloseFileInZip(zipfile);
		entryopen = false;
	}	// endif entryopen

}	// end of closeEntry

/* ------------------------- class UNZIPUTL -------------------------- */

/***********************************************************************/
/*  Constructors.                                                      */
/***********************************************************************/
UNZIPUTL::UNZIPUTL(PCSZ tgt, bool mul)
{
	zipfile = NULL;
	target = tgt;
	pwd = NULL;
	fp = NULL;
	memory = NULL;
	size = 0;
	entryopen = false;
	multiple = mul;
	memset(fn, 0, sizeof(fn));

	// Init the case mapping table.
#if defined(__WIN__)
	for (int i = 0; i < 256; ++i) mapCaseTable[i] = toupper(i);
#else
	for (int i = 0; i < 256; ++i) mapCaseTable[i] = i;
#endif
} // end of UNZIPUTL standard constructor

UNZIPUTL::UNZIPUTL(PDOSDEF tdp)
{
	zipfile = NULL;
	target = tdp->GetEntry();
	pwd = tdp->Pwd;
	fp = NULL;
	memory = NULL;
	size = 0;
	entryopen = false;
	multiple = tdp->GetMul();
	memset(fn, 0, sizeof(fn));

	// Init the case mapping table.
#if defined(__WIN__)
	for (int i = 0; i < 256; ++i) mapCaseTable[i] = toupper(i);
#else
	for (int i = 0; i < 256; ++i) mapCaseTable[i] = i;
#endif
} // end of UNZIPUTL standard constructor

#if 0
UNZIPUTL::UNZIPUTL(PZIPUTIL zutp)
{
	zipfile = zutp->zipfile;
	target = zutp->target;
	fp = zutp->fp;
	finfo = zutp->finfo;
	entryopen = zutp->entryopen;
	multiple = zutp->multiple;
	for (int i = 0; i < 256; ++i) mapCaseTable[i] = zutp->mapCaseTable[i];
} // end of UNZIPUTL copy constructor
#endif // 0

/***********************************************************************/
/* This code is the copyright property of Alessandro Felice Cantatore. */
/* http://xoomer.virgilio.it/acantato/dev/wildcard/wildmatch.html			 */
/***********************************************************************/
bool UNZIPUTL::WildMatch(PCSZ pat, PCSZ str) {
	PCSZ s, p;
	bool star = FALSE;

loopStart:
	for (s = str, p = pat; *s; ++s, ++p) {
		switch (*p) {
		case '?':
			if (*s == '.') goto starCheck;
			break;
		case '*':
			star = TRUE;
			str = s, pat = p;
			if (!*++pat) return TRUE;
			goto loopStart;
		default:
			if (mapCaseTable[(uchar)*s] != mapCaseTable[(uchar)*p])
				goto starCheck;
			break;
		} /* endswitch */
	} /* endfor */
	if (*p == '*') ++p;
	return (!*p);

starCheck:
	if (!star) return FALSE;
	str++;
	goto loopStart;
}	// end of WildMatch

/***********************************************************************/
/*  open a zip file.																									 */
/*  param: filename	path and the filename of the zip file to open.		 */
/*  return:	true if open, false otherwise.														 */
/***********************************************************************/
bool UNZIPUTL::open(PGLOBAL g, PCSZ filename)
{
	if (!zipfile && !(zipfile = unzOpen64(filename)))
		sprintf(g->Message, "Zipfile open error on %s", filename);

	return (zipfile == NULL);
}	// end of open

/***********************************************************************/
/*  Close the zip file.																								 */
/***********************************************************************/
void UNZIPUTL::close()
{
	if (zipfile) {
		closeEntry();
		unzClose(zipfile);
		zipfile = NULL;
	}	// endif zipfile

}	// end of close

/***********************************************************************/
/*  Find next entry matching target pattern.                           */
/***********************************************************************/
int UNZIPUTL::findEntry(PGLOBAL g, bool next)
{
	int  rc;

	do {
		if (next) {
			rc = unzGoToNextFile(zipfile);

			if (rc == UNZ_END_OF_LIST_OF_FILE)
				return RC_EF;
			else if (rc != UNZ_OK) {
				sprintf(g->Message, "unzGoToNextFile rc = %d", rc);
				return RC_FX;
			} // endif rc

		} // endif next

		if (target && *target) {
			rc = unzGetCurrentFileInfo(zipfile, NULL, fn, sizeof(fn),
				NULL, 0, NULL, 0);
			if (rc == UNZ_OK) {
				if (WildMatch(target, fn))
					return RC_OK;

			} else {
				sprintf(g->Message, "GetCurrentFileInfo rc = %d", rc);
				return RC_FX;
			} // endif rc

		} else
			return RC_OK;

		next = true;
	} while (true);

	strcpy(g->Message, "FindNext logical error");
	return RC_FX;
}	// end of FindEntry


/***********************************************************************/
/*  Get the next used entry.                                           */
/***********************************************************************/
int UNZIPUTL::nextEntry(PGLOBAL g)
{
	if (multiple) {
		int rc;

		closeEntry();

		if ((rc = findEntry(g, true)) != RC_OK)
			return rc;

		if (openEntry(g))
			return RC_FX;

		return RC_OK;
	} else
		return RC_EF;

} // end of nextEntry


/***********************************************************************/
/*  OpenTableFile: Open a DOS/UNIX table file from a ZIP file.         */
/***********************************************************************/
bool UNZIPUTL::OpenTable(PGLOBAL g, MODE mode, PCSZ fn)
{
	/*********************************************************************/
	/*  The file will be decompressed into virtual memory.               */
	/*********************************************************************/
	if (mode == MODE_READ || mode == MODE_ANY) {
		bool b = open(g, fn);

		if (!b) {
			int rc;

			if (target && *target) {
				if (!multiple) {
					rc = unzLocateFile(zipfile, target, 0);

					if (rc == UNZ_END_OF_LIST_OF_FILE) {
						sprintf(g->Message, "Target file %s not in %s", target, fn);
						return true;
					} else if (rc != UNZ_OK) {
						sprintf(g->Message, "unzLocateFile rc=%d", rc);
						return true;
					}	// endif's rc

				} else {
					if ((rc = findEntry(g, false)) == RC_FX)
						return true;
					else if (rc == RC_EF) {
						sprintf(g->Message, "No match of %s in %s", target, fn);
						return true;
					} // endif rc

				} // endif multiple

			} // endif target

			if (openEntry(g))
				return true;

			if (size > 0) {
				/*******************************************************************/
				/*  Link a Fblock. This make possible to automatically close it    */
				/*  in case of error g->jump.                                      */
				/*******************************************************************/
				PDBUSER dbuserp = (PDBUSER)g->Activityp->Aptr;

				fp = (PFBLOCK)PlugSubAlloc(g, NULL, sizeof(FBLOCK));
				fp->Type = TYPE_FB_ZIP;
				fp->Fname = PlugDup(g, fn);
				fp->Next = dbuserp->Openlist;
				dbuserp->Openlist = fp;
				fp->Count = 1;
				fp->Length = size;
				fp->Memory = memory;
				fp->Mode = mode;
				fp->File = this;
				fp->Handle = 0;
			} // endif fp

		} else
			return true;

	} else {
		strcpy(g->Message, "Only READ mode supported for ZIPPED tables");
		return true;
	}	// endif mode

	return false;
} // end of OpenTableFile

/***********************************************************************/
/*  Insert only if the entry does not exist.   												 */
/***********************************************************************/
bool UNZIPUTL::IsInsertOk(PGLOBAL g, PCSZ fn)
{
	bool ok = true, b = open(g, fn);

	if (!b) {
		if (!target || *target == 0) {
			unz_global_info64 ginfo;
			int err = unzGetGlobalInfo64(zipfile, &ginfo);

			ok = !(err == UNZ_OK && ginfo.number_entry > 0);
		} else						// Check if the target exist
			ok = (unzLocateFile(zipfile, target, 0) != UNZ_OK);

		unzClose(zipfile);
	} // endif b

	return ok;
} // end of IsInsertOk

/***********************************************************************/
/*  Open target in zip file.						      												 */
/***********************************************************************/
bool UNZIPUTL::openEntry(PGLOBAL g)
{
	int rc;

	rc = unzGetCurrentFileInfo(zipfile, &finfo, fn, sizeof(fn),
		NULL, 0, NULL, 0);

	if (rc != UNZ_OK) {
		sprintf(g->Message, "unzGetCurrentFileInfo64 rc=%d", rc);
		return true;
	} else if ((rc = unzOpenCurrentFilePassword(zipfile, pwd)) != UNZ_OK) {
		sprintf(g->Message, "unzOpen fn=%s rc=%d", fn, rc);
		return true;
	}	// endif rc

	size = finfo.uncompressed_size;

	try {
		memory = new char[size + 1];
	} catch (...) {
		strcpy(g->Message, "Out of memory");
		return true;
	} // end try/catch

	if ((rc = unzReadCurrentFile(zipfile, memory, size)) < 0) {
		sprintf(g->Message, "unzReadCurrentFile rc = %d", rc);
		unzCloseCurrentFile(zipfile);
		delete[] memory;
		memory = NULL;
		entryopen = false;
	} else {
		memory[size] = 0;    // Required by some table types (XML)
		entryopen = true;
	} // endif rc

	if (trace)
		htrc("Openning entry%s %s\n", fn, (entryopen) ? "oked" : "failed");

	return !entryopen;
}	// end of openEntry

/***********************************************************************/
/*  Close the zip file.																								 */
/***********************************************************************/
void UNZIPUTL::closeEntry()
{
	if (entryopen) {
		unzCloseCurrentFile(zipfile);
		entryopen = false;
	}	// endif entryopen

	if (memory) {
		delete[] memory;
		memory = NULL;
	}	// endif memory

}	// end of closeEntry

/* -------------------------- class UNZFAM --------------------------- */

/***********************************************************************/
/*  Constructors.                                                      */
/***********************************************************************/
UNZFAM::UNZFAM(PDOSDEF tdp) : MAPFAM(tdp)
{
	zutp = NULL;
	tdfp = tdp;
  //target = tdp->GetEntry();
	//mul = tdp->GetMul();
} // end of UNZFAM standard constructor

UNZFAM::UNZFAM(PUNZFAM txfp) : MAPFAM(txfp)
{
	zutp = txfp->zutp;
	tdfp = txfp->tdfp;
	//target = txfp->target;
	//mul = txfp->mul;
} // end of UNZFAM copy constructor

/***********************************************************************/
/*  ZIP GetFileLength: returns file size in number of bytes.           */
/***********************************************************************/
int UNZFAM::GetFileLength(PGLOBAL g)
{
	int len = (zutp && zutp->entryopen) ? Top - Memory
		                                  : TXTFAM::GetFileLength(g) * 3;

	if (trace)
		htrc("Zipped file length=%d\n", len);

	return len;
} // end of GetFileLength

/***********************************************************************/
/*  ZIP Cardinality: return the number of rows if possible.            */
/***********************************************************************/
int UNZFAM::Cardinality(PGLOBAL g)
{
	if (!g)
		return 1;

	int card = -1;
	int len = GetFileLength(g);

	if (len) {
		// Estimated ???
		card = (len / (int)Lrecl) * 2;
		card = card ? card : 10;				// Lrecl can be too big 
	} else
		card = 0;

	return card;
} // end of Cardinality

/***********************************************************************/
/*  OpenTableFile: Open a DOS/UNIX table file from a ZIP file.         */
/***********************************************************************/
bool UNZFAM::OpenTableFile(PGLOBAL g)
{
	char    filename[_MAX_PATH];
	MODE    mode = Tdbp->GetMode();

	/*********************************************************************/
	/*  Allocate the ZIP utility class.                                  */
	/*********************************************************************/
	zutp = new(g) UNZIPUTL(tdfp);

	//  We used the file name relative to recorded datapath
	PlugSetPath(filename, To_File, Tdbp->GetPath());

	if (!zutp->OpenTable(g, mode, filename)) {
		// The pseudo "buffer" is here the entire real buffer
		Fpos = Mempos = Memory = zutp->memory;
		Top = Memory + zutp->size;
		To_Fb = zutp->fp;                           // Useful when closing
	} else
		return true;

	return false;
	} // end of OpenTableFile

/***********************************************************************/
/*  GetNext: go to next entry.                                         */
/***********************************************************************/
int UNZFAM::GetNext(PGLOBAL g)
{
	int rc = zutp->nextEntry(g);

	if (rc != RC_OK)
		return rc;

	Mempos = Memory = zutp->memory;
	Top = Memory + zutp->size;
	return RC_OK;
} // end of GetNext

#if 0
/***********************************************************************/
/*  ReadBuffer: Read one line for a ZIP file.                          */
/***********************************************************************/
int UNZFAM::ReadBuffer(PGLOBAL g)
{
	int rc, len;

	// Are we at the end of the memory
	if (Mempos >= Top) {
		if ((rc = zutp->nextEntry(g)) != RC_OK)
			return rc;

		Mempos = Memory = zutp->memory;
		Top = Memory + zutp->size;
	}	// endif Mempos

#if 0
	if (!Placed) {
		/*******************************************************************/
		/*  Record file position in case of UPDATE or DELETE.              */
		/*******************************************************************/
		int rc;

	next:
		Fpos = Mempos;
		CurBlk = (int)Rows++;

		/*******************************************************************/
		/*  Check whether optimization on ROWID                            */
		/*  can be done, as well as for join as for local filtering.       */
		/*******************************************************************/
		switch (Tdbp->TestBlock(g)) {
		case RC_EF:
			return RC_EF;
		case RC_NF:
			// Skip this record
			if ((rc = SkipRecord(g, false)) != RC_OK)
				return rc;

			goto next;
		} // endswitch rc

	} else
		Placed = false;
#else
	// Perhaps unuseful
	Fpos = Mempos;
	CurBlk = (int)Rows++;
	Placed = false;
#endif

	// Immediately calculate next position (Used by DeleteDB)
	while (*Mempos++ != '\n');        // What about Unix ???

	// Set caller line buffer
	len = (Mempos - Fpos) - 1;

	// Don't rely on ENDING setting
	if (len > 0 && *(Mempos - 2) == '\r')
		len--;             // Line ends by CRLF

	memcpy(Tdbp->GetLine(), Fpos, len);
	Tdbp->GetLine()[len] = '\0';
	return RC_OK;
} // end of ReadBuffer

/***********************************************************************/
/*  Table file close routine for MAP access method.                    */
/***********************************************************************/
void UNZFAM::CloseTableFile(PGLOBAL g, bool)
{
	close();
} // end of CloseTableFile
#endif // 0

/* -------------------------- class UZXFAM --------------------------- */

/***********************************************************************/
/*  Constructors.                                                      */
/***********************************************************************/
UZXFAM::UZXFAM(PDOSDEF tdp) : MPXFAM(tdp)
{
	zutp = NULL;
	tdfp = tdp;
	//target = tdp->GetEntry();
	//mul = tdp->GetMul();
	//Lrecl = tdp->GetLrecl();
} // end of UZXFAM standard constructor

UZXFAM::UZXFAM(PUZXFAM txfp) : MPXFAM(txfp)
{
	zutp = txfp->zutp;
	tdfp = txfp->tdfp;
	//target = txfp->target;
	//mul = txfp->mul;
	//Lrecl = txfp->Lrecl;
} // end of UZXFAM copy constructor

/***********************************************************************/
/*  ZIP GetFileLength: returns file size in number of bytes.           */
/***********************************************************************/
int UZXFAM::GetFileLength(PGLOBAL g)
{
	int len;

	if (!zutp && OpenTableFile(g))
		return 0;

	if (zutp->entryopen)
		len = zutp->size;
	else
		len = 0;

	return len;
} // end of GetFileLength

/***********************************************************************/
/*  ZIP Cardinality: return the number of rows if possible.            */
/***********************************************************************/
int UZXFAM::Cardinality(PGLOBAL g)
{
	if (!g)
		return 1;

	int card = -1;
	int len = GetFileLength(g);

	if (!(len % Lrecl))
		card = len / (int)Lrecl;           // Fixed length file
	else
		sprintf(g->Message, MSG(NOT_FIXED_LEN), zutp->fn, len, Lrecl);

	// Set number of blocks for later use
	Block = (card > 0) ? (card + Nrec - 1) / Nrec : 0;
	return card;
} // end of Cardinality

/***********************************************************************/
/*  OpenTableFile: Open a DOS/UNIX table file from a ZIP file.         */
/***********************************************************************/
bool UZXFAM::OpenTableFile(PGLOBAL g)
{
	// May have been already opened in GetFileLength
	if (!zutp || !zutp->zipfile) {
		char    filename[_MAX_PATH];
		MODE    mode = Tdbp->GetMode();

		/*********************************************************************/
		/*  Allocate the ZIP utility class.                                  */
		/*********************************************************************/
		if (!zutp)
			zutp = new(g)UNZIPUTL(tdfp);

		//  We used the file name relative to recorded datapath
		PlugSetPath(filename, To_File, Tdbp->GetPath());

		if (!zutp->OpenTable(g, mode, filename)) {
			// The pseudo "buffer" is here the entire real buffer
			Memory = zutp->memory;
			Fpos = Mempos = Memory + Headlen;
			Top = Memory + zutp->size;
			To_Fb = zutp->fp;                           // Useful when closing
		} else
			return true;

	} else
		Reset();

	return false;
} // end of OpenTableFile

/***********************************************************************/
/*  GetNext: go to next entry.                                         */
/***********************************************************************/
int UZXFAM::GetNext(PGLOBAL g)
{
	int rc = zutp->nextEntry(g);

	if (rc != RC_OK)
			return rc;

	int len = zutp->size;

	if (len % Lrecl) {
		sprintf(g->Message, MSG(NOT_FIXED_LEN), zutp->fn, len, Lrecl);
		return RC_FX;
	}	// endif size

	Memory = zutp->memory;
	Top = Memory + len;
	Rewind();
	return RC_OK;
} // end of GetNext

/* -------------------------- class ZIPFAM --------------------------- */

/***********************************************************************/
/*  Constructor.                                                       */
/***********************************************************************/
ZIPFAM::ZIPFAM(PDOSDEF tdp) : DOSFAM(tdp)
{
	zutp = NULL;
	target = tdp->GetEntry();
	append = tdp->GetAppend();
} // end of ZIPFAM standard constructor

/***********************************************************************/
/*  OpenTableFile: Open a DOS/UNIX table file from a ZIP file.         */
/***********************************************************************/
bool ZIPFAM::OpenTableFile(PGLOBAL g)
{
	char filename[_MAX_PATH];
	MODE mode = Tdbp->GetMode();
	int  len = TXTFAM::GetFileLength(g);

	//  We used the file name relative to recorded datapath
	PlugSetPath(filename, To_File, Tdbp->GetPath());

	if (len < 0)
		return true;
	else if (!append && len > 0) {
		strcpy(g->Message, "No insert into existing zip file");
		return true;
	} else if (append && len > 0) {
		UNZIPUTL *zutp = new(g) UNZIPUTL(target, false);

		if (!zutp->IsInsertOk(g, filename)) {
			strcpy(g->Message, "No insert into existing entry");
			return true;
		}	// endif Ok

	} // endif's

	/*********************************************************************/
	/*  Allocate the ZIP utility class.                                  */
	/*********************************************************************/
	zutp = new(g) ZIPUTIL(target);

	//  We used the file name relative to recorded datapath
	PlugSetPath(filename, To_File, Tdbp->GetPath());

	if (!zutp->OpenTable(g, mode, filename, append)) {
		To_Fb = zutp->fp;                           // Useful when closing
	} else
		return true;

	return AllocateBuffer(g);
} // end of OpenTableFile

/***********************************************************************/
/*  ReadBuffer: Read one line for a ZIP file.                          */
/***********************************************************************/
int ZIPFAM::ReadBuffer(PGLOBAL g)
{
	strcpy(g->Message, "ReadBuffer should not been called when zipping");
	return RC_FX;
} // end of ReadBuffer

/***********************************************************************/
/*  WriteBuffer: Deflate the buffer to the zip file.                   */
/***********************************************************************/
int ZIPFAM::WriteBuffer(PGLOBAL g)
{
	int len;

	//  Prepare to write the new line
	strcat(strcpy(To_Buf, Tdbp->GetLine()), (Bin) ? CrLf : "\n");
	len = strchr(To_Buf, '\n') - To_Buf + 1;
	return zutp->writeEntry(g, To_Buf, len);
} // end of WriteBuffer

/***********************************************************************/
/*  Table file close routine for ZIP access method.                    */
/***********************************************************************/
void ZIPFAM::CloseTableFile(PGLOBAL g, bool)
{
	To_Fb->Count = 0;
	zutp->close();
} // end of CloseTableFile

/* -------------------------- class ZPXFAM --------------------------- */

/***********************************************************************/
/*  Constructor.                                                       */
/***********************************************************************/
ZPXFAM::ZPXFAM(PDOSDEF tdp) : FIXFAM(tdp)
{
	zutp = NULL;
	target = tdp->GetEntry();
	append = tdp->GetAppend();
	//Lrecl = tdp->GetLrecl();
} // end of ZPXFAM standard constructor

/***********************************************************************/
/*  OpenTableFile: Open a DOS/UNIX table file from a ZIP file.         */
/***********************************************************************/
bool ZPXFAM::OpenTableFile(PGLOBAL g)
{
	char filename[_MAX_PATH];
	MODE mode = Tdbp->GetMode();
	int  len = TXTFAM::GetFileLength(g);

	if (len < 0)
		return true;
	else if (!append && len > 0) {
		strcpy(g->Message, "No insert into existing zip file");
		return true;
	} else if (append && len > 0) {
		UNZIPUTL *zutp = new(g) UNZIPUTL(target, false);

		if (!zutp->IsInsertOk(g, filename)) {
			strcpy(g->Message, "No insert into existing entry");
			return true;
		}	// endif Ok

	} // endif's

	/*********************************************************************/
	/*  Allocate the ZIP utility class.                                  */
	/*********************************************************************/
	zutp = new(g) ZIPUTIL(target);

	//  We used the file name relative to recorded datapath
	PlugSetPath(filename, To_File, Tdbp->GetPath());

	if (!zutp->OpenTable(g, mode, filename, append)) {
		To_Fb = zutp->fp;                           // Useful when closing
	} else
		return true;

	return AllocateBuffer(g);
} // end of OpenTableFile

/***********************************************************************/
/*  WriteBuffer: Deflate the buffer to the zip file.                   */
/***********************************************************************/
int ZPXFAM::WriteBuffer(PGLOBAL g)
{
	/*********************************************************************/
	/*  In Insert mode, we write only full blocks.                       */
	/*********************************************************************/
	if (++CurNum != Rbuf) {
		Tdbp->IncLine(Lrecl);            // Used by DOSCOL functions
		return RC_OK;
	} // endif CurNum

	//  Now start the compress process.
	if (zutp->writeEntry(g, To_Buf, Lrecl * Rbuf) != RC_OK) {
		Closing = true;
		return RC_FX;
	}	// endif writeEntry

	CurBlk++;
	CurNum = 0;
	Tdbp->SetLine(To_Buf);
	return RC_OK;
} // end of WriteBuffer

/***********************************************************************/
/*  Table file close routine for ZIP access method.                    */
/***********************************************************************/
void ZPXFAM::CloseTableFile(PGLOBAL g, bool)
{
	if (CurNum && !Closing) {
		// Some more inserted lines remain to be written
		Rbuf = CurNum--;
		WriteBuffer(g);
	} // endif Curnum

	To_Fb->Count = 0;
	zutp->close();
} // end of CloseTableFile