summaryrefslogtreecommitdiffstats
path: root/storage/connect/libdoc.cpp
blob: 67f22ce29e90b9875d24914fe6fb245049e6888c (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
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
/******************************************************************/
/*  Implementation of XML document processing using libxml2       */
/*  Author: Olivier Bertrand                2007-2016             */
/******************************************************************/
#include "my_global.h"
#include <string.h>
#include <stdio.h>
#include <libxml/parser.h>
#include <libxml/tree.h>
#include <libxml/xpath.h>
#include <libxml/xpathInternals.h>
#include <libxml/catalog.h>
#include <libxml/xmlschemastypes.h>
#include <libxml/relaxng.h>

#if !defined(LIBXML_TREE_ENABLED) || !defined(LIBXML_OUTPUT_ENABLED)
#error "tree support not compiled in"
#endif

#if !defined(LIBXML_XPATH_ENABLED) || !defined(LIBXML_SAX1_ENABLED)
#error "XPath not supported"
#endif

#include "global.h"
#include "plgdbsem.h"
#include "xobject.h"
#include "libdoc.h"

#include "sql_string.h"

/******************************************************************/
/*  Declaration of XML document processing using libxml2          */
/*  Author: Olivier Bertrand                2007-2012             */
/******************************************************************/
#include "plgxml.h"

typedef class LIBXMLDOC    *PXDOC2;
typedef class XML2NODE     *PNODE2;
typedef class XML2ATTR     *PATTR2;
typedef class XML2NODELIST *PLIST2;

/******************************************************************/
/* XML2 block. Must have the same layout than FBLOCK up to Type.  */
/******************************************************************/
typedef struct _x2block {         /* Loaded XML file block        */
  struct _x2block   *Next;
  LPCSTR             Fname;       /* Point on file name           */
  size_t             Length;      /* Used to tell if read mode    */
  short              Count;       /* Nb of times file is used     */
  short              Type;        /* TYPE_FB_XML                  */
  int                Retcode;     /* Return code from Load        */
  xmlDocPtr          Docp;        /* Document interface pointer   */
  } X2BLOCK, *PX2BLOCK;

/******************************************************************/
/*  Declaration of libxml2 document.                              */
/******************************************************************/
class LIBXMLDOC : public XMLDOCUMENT {
  friend class XML2NODE;
  friend class XML2ATTR;
 public:
  // Constructor
  LIBXMLDOC(char *nsl, char *nsdf, char *enc, PFBLOCK fp);

  // Properties
  virtual short  GetDocType(void) {return TYPE_FB_XML2;}
  virtual void  *GetDocPtr(void) {return Docp;}
  virtual void   SetNofree(bool b) {Nofreelist = b;}

  // Methods
	virtual bool    Initialize(PGLOBAL g, PCSZ entry, bool zipped);
  virtual bool    ParseFile(PGLOBAL g, char *fn);
  virtual bool    NewDoc(PGLOBAL g, PCSZ ver);
  virtual void    AddComment(PGLOBAL g, char *com);
  virtual PXNODE  GetRoot(PGLOBAL g);
  virtual PXNODE  NewRoot(PGLOBAL g, char *name);
  virtual PXNODE  NewPnode(PGLOBAL g, char *name);
  virtual PXATTR  NewPattr(PGLOBAL g);
  virtual PXLIST  NewPlist(PGLOBAL g);
  virtual int     DumpDoc(PGLOBAL g, char *ofn);
  virtual void    CloseDoc(PGLOBAL g, PFBLOCK xp);
  virtual PFBLOCK LinkXblock(PGLOBAL g, MODE m, int rc, char *fn);

 protected:
//        bool     CheckDocument(FILE *of, xmlNodePtr np);
          xmlNodeSetPtr GetNodeList(PGLOBAL g, xmlNodePtr np, char *xp);
          int      Decode(xmlChar *cnt, char *buf, int n);
          xmlChar *Encode(PGLOBAL g, char *txt);

  // Members
  xmlDocPtr          Docp;
  xmlNodeSetPtr      Nlist;
  xmlXPathContextPtr Ctxp;
  xmlXPathObjectPtr  Xop;
  xmlXPathObjectPtr  NlXop;
  xmlErrorPtr        Xerr;
  char              *Buf;                  // Temporary
  bool               Nofreelist;
}; // end of class LIBXMLDOC

/******************************************************************/
/*  Declaration of libxml2 node.                                  */
/******************************************************************/
class XML2NODE : public XMLNODE {
  friend class LIBXMLDOC;
  friend class XML2NODELIST;
 public:
  // Properties
  virtual char  *GetName(PGLOBAL g) {return (char*)Nodep->name;}
  virtual int    GetType(void);
  virtual PXNODE GetNext(PGLOBAL g);
  virtual PXNODE GetChild(PGLOBAL g);

  // Methods
  virtual RCODE  GetContent(PGLOBAL g, char *buf, int len);
  virtual bool   SetContent(PGLOBAL g, char *txtp, int len);
  virtual PXNODE Clone(PGLOBAL g, PXNODE np);
  virtual PXLIST GetChildElements(PGLOBAL g, char *xp, PXLIST lp);
  virtual PXLIST SelectNodes(PGLOBAL g, char *xp, PXLIST lp);
  virtual PXNODE SelectSingleNode(PGLOBAL g, char *xp, PXNODE np);
  virtual PXATTR GetAttribute(PGLOBAL g, char *name, PXATTR ap);
  virtual PXNODE AddChildNode(PGLOBAL g, PCSZ name, PXNODE np);
  virtual PXATTR AddProperty(PGLOBAL g, char *name, PXATTR ap);
  virtual void   AddText(PGLOBAL g, PCSZ txtp);
  virtual void   DeleteChild(PGLOBAL g, PXNODE dnp);

 protected:
  // Constructor
  XML2NODE(PXDOC dp, xmlNodePtr np);

  // Members
  xmlDocPtr  Docp;
  xmlChar   *Content;
  xmlNodePtr Nodep;
}; // end of class XML2NODE

/******************************************************************/
/*  Declaration of libxml2 node list.                             */
/******************************************************************/
class XML2NODELIST : public XMLNODELIST {
  friend class LIBXMLDOC;
  friend class XML2NODE;
 public:
  // Methods
  virtual int    GetLength(void);
  virtual PXNODE GetItem(PGLOBAL g, int n, PXNODE np);
  virtual bool   DropItem(PGLOBAL g, int n);

 protected:
  // Constructor
  XML2NODELIST(PXDOC dp, xmlNodeSetPtr lp);

  // Members
  xmlNodeSetPtr Listp;
}; // end of class XML2NODELIST

/******************************************************************/
/*  Declaration of libxml2 attribute.                             */
/******************************************************************/
class XML2ATTR : public XMLATTRIBUTE {
  friend class LIBXMLDOC;
  friend class XML2NODE;
 public:
  // Properties
  virtual char  *GetName(PGLOBAL g) {return (char*)Atrp->name;}
  virtual PXATTR GetNext(PGLOBAL g);

  // Methods
  virtual RCODE  GetText(PGLOBAL g, char *bufp, int len);
  virtual bool   SetText(PGLOBAL g, char *txtp, int len);

 protected:
  // Constructor
  XML2ATTR(PXDOC dp, xmlAttrPtr ap, xmlNodePtr np);

  // Members
  xmlAttrPtr Atrp;
  xmlNodePtr Parent;
}; // end of class XML2ATTR



extern "C" {
extern char version[];
} //   "C"

#if defined(MEMORY_TRACE)
static int  m = 0;
static char s[500];
/**************************************************************************/
/*  Tracing output function.                                              */
/**************************************************************************/
void xtrc(char const *fmt, ...)
  {
  va_list ap;
  va_start (ap, fmt);
																							;
//vfprintf(stderr, fmt, ap);
  vsprintf(s, fmt, ap);
  if (s[strlen(s)-1] == '\n')
      s[strlen(s)-1] = 0;
  va_end (ap);
  } // end of htrc

static xmlFreeFunc Free; 
static xmlMallocFunc Malloc;
static xmlMallocFunc MallocA; 
static xmlReallocFunc Realloc; 
static xmlStrdupFunc Strdup;

void xmlMyFree(void *mem)
{
  if (trace(1)) { 
    htrc("%.4d Freeing          at %p   %-.256s\n", ++m, mem, s);
    *s = 0;
    } // endif trace
  Free(mem);
} // end of xmlMyFree

void *xmlMyMalloc(size_t size)
{
  void *p = Malloc(size);
  if (trace(1)) { 
    htrc("%.4d Allocating %.5d at %p   %-.256s\n", ++m, size, p, s);
    *s = 0;
    } // endif trace
  return p;
} // end of xmlMyMalloc

void *xmlMyMallocAtomic(size_t size)
{
  void *p = MallocA(size);
  if (trace(1)) { 
    htrc("%.4d Atom alloc %.5d at %p   %-.256s\n", ++m, size, p, s);
    *s = 0;
    } // endif trace
  return p;
} // end of xmlMyMallocAtomic

void *xmlMyRealloc(void *mem, size_t size)
{
  void *p = Realloc(mem, size);
  if (trace(1)) { 
    htrc("%.4d ReAlloc    %.5d to %p from %p   %-.256s\n", ++m, size, p, mem, s);
    *s = 0;
    } // endif trace
  return p;
} // end of xmlMyRealloc

char *xmlMyStrdup(const char *str)
{
  char *p = Strdup(str);
  if (trace(1)) { 
    htrc("%.4d Duplicating      to %p from %p %-.256s   %-.256s\n", ++m, p, str, str, s);
    *s = 0;
    } // endif trace
  return p;
} // end of xmlMyStrdup
#define htrc xtrc
#endif   // MEMORY_TRACE

/******************************************************************/
/*  Return a LIBXMLDOC as a XMLDOC.                               */
/******************************************************************/
PXDOC GetLibxmlDoc(PGLOBAL g, char *nsl, char *nsdf, 
                                         char *enc, PFBLOCK fp)
  {
  return (PXDOC) new(g) LIBXMLDOC(nsl, nsdf, enc, fp);
  } // end of GetLibxmlDoc

/******************************************************************/
/*  XML library initialization function.                          */
/******************************************************************/
void XmlInitParserLib(void)
  {
#if defined(MEMORY_TRACE)
int	rc = xmlGcMemGet(&Free, &Malloc, &MallocA, &Realloc, &Strdup);

if (!rc)
  rc = xmlGcMemSetup(xmlMyFree, 
                     xmlMyMalloc, 
                     xmlMyMallocAtomic,
                     xmlMyRealloc,
                     xmlMyStrdup); 

#endif   // MEMORY_TRACE
  xmlInitParser();
  } // end of XmlInitParserLib

/******************************************************************/
/*  XML library cleanup function.                                 */
/******************************************************************/
void XmlCleanupParserLib(void)
  {
  } // end of XmlCleanupParserLib

/******************************************************************/
/*  Close a loaded libxml2 XML file.                              */
/******************************************************************/
void CloseXML2File(PGLOBAL g, PFBLOCK fp, bool all)
  {
  PX2BLOCK xp = (PX2BLOCK)fp;

  if (trace(1))
    htrc("CloseXML2File: xp=%p count=%d\n", xp, (xp) ? xp->Count : 0);

  if (xp && xp->Count > 1 && !all) {
    xp->Count--;
  } else if (xp && xp->Count > 0) {
    xmlFreeDoc(xp->Docp);
    xp->Count = 0;
  } // endif

  } // end of CloseXML2File

/* ---------------------- class LIBXMLDOC ----------------------- */

/******************************************************************/
/*  LIBXMLDOC constructor.                                        */
/******************************************************************/
LIBXMLDOC::LIBXMLDOC(char *nsl, char *nsdf, char *enc, PFBLOCK fp)
         : XMLDOCUMENT(nsl, nsdf, enc)
  {
  assert (!fp || fp->Type == TYPE_FB_XML2);
  Docp = (fp) ? ((PX2BLOCK)fp)->Docp : NULL;
  Nlist = NULL;
  Ctxp = NULL;
  Xop = NULL;
  NlXop = NULL;
  Xerr = NULL;
  Buf = NULL;
  Nofreelist = false;
  } // end of LIBXMLDOC constructor

/******************************************************************/
/*  Initialize XML parser and check library compatibility.        */
/******************************************************************/
bool LIBXMLDOC::Initialize(PGLOBAL g, PCSZ entry, bool zipped)
{
	if (zipped && InitZip(g, entry))
		return true;

  xmlKeepBlanksDefault(1);
  return MakeNSlist(g);
} // end of Initialize

/******************************************************************/
/* Parse the XML file and construct node tree in memory.          */
/******************************************************************/
bool LIBXMLDOC::ParseFile(PGLOBAL g, char *fn)
  {
  if (trace(1))
    htrc("ParseFile\n");

	if (zip) {
		// Parse an in memory document
		char *xdoc = GetMemDoc(g, fn);

		Docp = (xdoc) ? xmlParseDoc((const xmlChar *)xdoc) : NULL;
	} else
		Docp = xmlParseFile(fn);

	if (Docp) {
		if (Docp->encoding)
      Encoding = (char*)Docp->encoding;

    return false;
  } else if ((Xerr = xmlGetLastError()))
    xmlResetError(Xerr);

  return true;
  } // end of ParseFile

/******************************************************************/
/* Create or reuse an Xblock for this document.                   */
/******************************************************************/
PFBLOCK LIBXMLDOC::LinkXblock(PGLOBAL g, MODE m, int rc, char *fn)
  {
  PDBUSER  dup = (PDBUSER)g->Activityp->Aptr;
  PX2BLOCK xp = (PX2BLOCK)PlugSubAlloc(g, NULL, sizeof(X2BLOCK));

  memset(xp, 0, sizeof(X2BLOCK));
  xp->Next = (PX2BLOCK)dup->Openlist;
  dup->Openlist = (PFBLOCK)xp;
  xp->Type = TYPE_FB_XML2;
  xp->Fname = (LPCSTR)PlugDup(g, fn);
  xp->Count = 1;
  xp->Length = (m == MODE_READ) ? 1 : 0;
  xp->Retcode = rc;
  xp->Docp = Docp;

  // Return xp as a fp
  return (PFBLOCK)xp;
  } // end of LinkXblock

/******************************************************************/
/* Construct and add the XML processing instruction node.         */
/******************************************************************/
bool LIBXMLDOC::NewDoc(PGLOBAL g, PCSZ ver)
  {
  if (trace(1))
    htrc("NewDoc\n");

  return ((Docp = xmlNewDoc(BAD_CAST ver)) == NULL);
  } // end of NewDoc

/******************************************************************/
/*  Add a new comment node to the document.                       */
/******************************************************************/
void LIBXMLDOC::AddComment(PGLOBAL g, char *txtp)
  {
  if (trace(1))
    htrc("AddComment: %-.256s\n", txtp);

  xmlNodePtr cp = xmlNewDocComment(Docp, BAD_CAST txtp);
  xmlAddChild((xmlNodePtr)Docp, cp);
  } // end of AddText

/******************************************************************/
/* Return the node class of the root of the document.             */
/******************************************************************/
PXNODE LIBXMLDOC::GetRoot(PGLOBAL g)
  {
  if (trace(1))
    htrc("GetRoot\n");

  xmlNodePtr root = xmlDocGetRootElement(Docp);

  if (!root)
    return NULL;

  return new(g) XML2NODE(this, root);
  } // end of GetRoot

/******************************************************************/
/* Create a new root element and return its class node.           */
/******************************************************************/
PXNODE LIBXMLDOC::NewRoot(PGLOBAL g, char *name)
  {
  if (trace(1))
    htrc("NewRoot: %-.256s\n", name);

  xmlNodePtr root = xmlNewDocNode(Docp, NULL, BAD_CAST name, NULL);

  if (root) {
    xmlDocSetRootElement(Docp, root);
    return new(g) XML2NODE(this, root);
  } else
    return NULL;

  } // end of NewRoot

/******************************************************************/
/* Return a void XML2NODE node class.                             */
/******************************************************************/
PXNODE LIBXMLDOC::NewPnode(PGLOBAL g, char *name)
  {
  if (trace(1))
    htrc("NewNode: %-.256s\n", name);

  xmlNodePtr nop;

  if (name) {
    nop = xmlNewDocNode(Docp, NULL, BAD_CAST name, NULL);

    if (nop == NULL)
      return NULL;

  } else
    nop = NULL;

  return new(g) XML2NODE(this, nop);
  } // end of NewPnode

/******************************************************************/
/* Return a void XML2ATTR node class.                             */
/******************************************************************/
PXATTR LIBXMLDOC::NewPattr(PGLOBAL g)
  {
  return new(g) XML2ATTR(this, NULL, NULL);
  } // end of NewPattr

/******************************************************************/
/* Return a void XML2ATTR node class.                             */
/******************************************************************/
PXLIST LIBXMLDOC::NewPlist(PGLOBAL g)
  {
  return new(g) XML2NODELIST(this, NULL);
  } // end of NewPlist

/******************************************************************/
/* Dump the node tree to a new XML file.                          */
/******************************************************************/
int LIBXMLDOC::DumpDoc(PGLOBAL g, char *ofn)
  {
  int   rc = 0;
  FILE *of;

  if (trace(1))
    htrc("DumpDoc: %-.256s\n", ofn);

  if (!(of= global_fopen(g, MSGID_CANNOT_OPEN, ofn, "w")))
    return -1;

#if 1
  // This function does not crash (
  if (xmlSaveFormatFileEnc((const char *)ofn, Docp, Encoding, 0) < 0) {
    xmlErrorPtr err = xmlGetLastError();
    strcpy(g->Message, (err) ? err->message : "Error saving XML doc");
    xmlResetError(Xerr);
    rc = -1;
    } // endif Save
//  rc = xmlDocDump(of, Docp);
#else // 0
  // Until this function is fixed, do the job ourself
  xmlNodePtr Rootp;

  // Save the modified document
  fprintf(of, "<?xml version=\"1.0\" encoding=\"%-.256s\"?>\n", Encoding);
  fprintf(of, "<!-- Created by CONNECT %-.256s -->\n", version);

  if (!(Rootp = xmlDocGetRootElement(Docp)))
    return 1;

  Buf = (char*)PlugSubAlloc(g, NULL, 1024);
  rc = iconv_close(Cd2);
  Cd2 = iconv_open(Encoding, "UTF-8");
  rc = CheckDocument(of, Rootp);
#endif // 0

  fclose(of);
  return rc;
  } // end of Dump

/******************************************************************/
/* Free the document, cleanup the XML library, and                */
/* debug memory for regression tests.                             */
/******************************************************************/
void LIBXMLDOC::CloseDoc(PGLOBAL g, PFBLOCK xp)
  {
  if (trace(1))
    htrc("CloseDoc: xp=%p count=%d\n", xp, (xp) ? xp->Count : 0);

//if (xp && xp->Count == 1) {
  if (xp) {
    if (Nlist) {
      xmlXPathFreeNodeSet(Nlist);

      if ((Xerr = xmlGetLastError()))
        xmlResetError(Xerr);

      Nlist = NULL;
      } // endif Nlist

    if (Xop) {
      xmlXPathFreeObject(Xop);

      if ((Xerr = xmlGetLastError()))
        xmlResetError(Xerr);

      Xop = NULL;
      } // endif Xop

    if (NlXop) {
      xmlXPathFreeObject(NlXop);

      if ((Xerr = xmlGetLastError()))
        xmlResetError(Xerr);

      NlXop = NULL;
      } // endif NlXop

    if (Ctxp) {
      xmlXPathFreeContext(Ctxp);

      if ((Xerr = xmlGetLastError()))
        xmlResetError(Xerr);

      Ctxp = NULL;
      } // endif Ctxp

    } // endif xp

  CloseXML2File(g, xp, false);
	CloseZip();
  } // end of Close

/******************************************************************/
/* Evaluate the passed Xpath from the passed context node.        */
/******************************************************************/
xmlNodeSetPtr LIBXMLDOC::GetNodeList(PGLOBAL g, xmlNodePtr np, char *xp)
  {
  xmlNodeSetPtr nl;

  if (trace(1))
    htrc("GetNodeList: %-.256s np=%p\n", xp, np);

  if (!Ctxp) {
    // Init Xpath
    if (trace(1))
      htrc("Calling xmlPathInit\n");

    xmlInitParser();

    if (trace(1))
      htrc("Calling xmlXPathNewContext Docp=%p\n", Docp);

    // Create xpath evaluation context
    if (!(Ctxp = xmlXPathNewContext(Docp))) {
      strcpy(g->Message, MSG(XPATH_CNTX_ERR));

      if (trace(1))
        htrc("Context error: %-.256s\n", g->Message);

      return NULL;
      } // endif xpathCtx

    // Register namespaces from list (if any)
    for (PNS nsp = Namespaces; nsp; nsp = nsp->Next) {
      if (trace(1))
        htrc("Calling xmlXPathRegisterNs Prefix=%-.256s Uri=%-.512s\n", 
             nsp->Prefix, nsp->Uri);

      if (xmlXPathRegisterNs(Ctxp, BAD_CAST nsp->Prefix,
                                   BAD_CAST nsp->Uri)) {
        snprintf(g->Message, sizeof(g->Message), MSG(REGISTER_ERR), nsp->Prefix, nsp->Uri);

        if (trace(1))
          htrc("Ns error: %-.256s\n", g->Message);

        return NULL;
        } // endif Registering

      } // endfor nsp

    } // endif Ctxp

  if (Xop) {
    if (trace(1))
      htrc("Calling xmlXPathFreeNodeSetList Xop=%p NOFREE=%d\n", 
                                            Xop, Nofreelist);

    if (Nofreelist) {
      // Making Nlist that must not be freed yet
//    xmlXPathFreeNodeSetList(Xop);       // Caused memory leak
      assert(!NlXop);
      NlXop = Xop;                        // Freed on closing
      Nofreelist = false;
    } else
      xmlXPathFreeObject(Xop);            // Caused node not found

    if ((Xerr = xmlGetLastError())) {
      strcpy(g->Message, Xerr->message);
      xmlResetError(Xerr);
      return NULL;
      } // endif Xerr

    } // endif Xop

  // Set the context to the calling node
  Ctxp->node = np;

  if (trace(1))
    htrc("Calling xmlXPathEval %-.256s Ctxp=%p\n", xp, Ctxp);

  // Evaluate table xpath
  if (!(Xop = xmlXPathEval(BAD_CAST xp, Ctxp))) {
    snprintf(g->Message, sizeof(g->Message), MSG(XPATH_EVAL_ERR), xp);

    if (trace(1))
      htrc("Path error: %-.256s\n", g->Message);

    return NULL;
  } else
    nl = Xop->nodesetval;

  if (trace(1))
    htrc("GetNodeList nl=%p n=%p\n", nl, (nl) ? nl->nodeNr : 0);

  return nl;
  } // end of GetNodeList

#if 0                                // Not used anymore
/******************************************************************/
/*  CheckDocument: check if the document is ok to dump.           */
/*  Currently this does the dumping of the document.              */
/******************************************************************/
bool LIBXMLDOC::CheckDocument(FILE *of, xmlNodePtr np)
  {
  int  n;
  bool b;

  if (!np)
    return true;

  if (np->type == XML_ELEMENT_NODE) {
    n = fprintf(of, "<%s", np->name);
    b = CheckDocument(of, (xmlNodePtr)np->properties);

    if (np->children)
      n = fprintf(of, ">");
    else
      n = fprintf(of, "/>");

  } else if (np->type == XML_ATTRIBUTE_NODE)
    n = fprintf(of, " %s=\"", np->name);
  else if (np->type == XML_TEXT_NODE)
    n = fprintf(of, "%s", Encode(NULL, (char*)np->content));
  else if (np->type == XML_COMMENT_NODE)
    n = fprintf(of, "%s", Encode(NULL, (char*)np->content));

  b = CheckDocument(of, np->children);

  if (np->type == XML_ATTRIBUTE_NODE)
    n = fprintf(of, "\"");
  else if (!b && np->type == XML_ELEMENT_NODE)
    n = fprintf(of, "</%s>", np->name);

  b = CheckDocument(of, np->next);
  return false;
  } // end of CheckDocument

/******************************************************************/
/*  Convert node or attribute content to latin characters.        */
/******************************************************************/
int LIBXMLDOC::Decode(xmlChar *cnt, char *buf, int n)
  {
  const char *txt = (const char *)cnt;
  uint   dummy_errors;
  uint32 len= copy_and_convert(buf, n, &my_charset_utf8mb3_general_ci, txt,
                               strlen(txt), &my_charset_utf8mb3_general_ci,
                               &dummy_errors);
  buf[len]= '\0';
  return 0;
  } // end of Decode

/******************************************************************/
/*  Convert node or attribute content to latin characters.        */
/******************************************************************/
xmlChar *LIBXMLDOC::Encode(PGLOBAL g, char *txt)
  {
  const CHARSET_INFO *ics= &my_charset_utf8mb3_general_ci;
  const CHARSET_INFO *ocs= &my_charset_utf8mb3_general_ci;
  size_t      i = strlen(txt);
  size_t      o = i * ocs->mbmaxlen / ics->mbmaxlen + 1;
  char        *buf;
  if (g) {
    buf = (char*)PlugSubAlloc(g, NULL, o);
  } else {
    o = 1024;
    buf = Buf;
  } // endif g
  uint dummy_errors;
  uint32 len= copy_and_convert(buf, o, ocs,
                               txt, i, ics,
                               &dummy_errors);
  buf[len]= '\0';
  return BAD_CAST buf;
  } // end of Encode
#endif // 0

/* ---------------------- class XML2NODE ------------------------ */

/******************************************************************/
/*  XML2NODE constructor.                                         */
/******************************************************************/
XML2NODE::XML2NODE(PXDOC dp, xmlNodePtr np) : XMLNODE(dp)
  {
  Docp = ((PXDOC2)dp)->Docp;
  Content = NULL;
  Nodep = np;
  } // end of XML2NODE constructor

int XML2NODE::GetType(void)
  {
  if (trace(1))
    htrc("GetType type=%d\n", Nodep->type);

  return Nodep->type;
  }  // end of GetType

/******************************************************************/
/*  Return the node class of next sibling of the node.            */
/******************************************************************/
PXNODE XML2NODE::GetNext(PGLOBAL g)
  {
  if (trace(1))
    htrc("GetNext\n");

  if (!Nodep->next)
    Next = NULL;
  else // if (!Next)
    Next = new(g) XML2NODE(Doc, Nodep->next);

  return Next;
  } // end of GetNext

/******************************************************************/
/*  Return the node class of first children of the node.          */
/******************************************************************/
PXNODE XML2NODE::GetChild(PGLOBAL g)
  {
  if (trace(1))
    htrc("GetChild\n");

  if (!Nodep->children)
    Children = NULL;
  else // if (!Children)
    Children = new(g) XML2NODE(Doc, Nodep->children);

  return Children;
  } // end of GetChild

/******************************************************************/
/*  Return the content of a node and subnodes.                    */
/******************************************************************/
RCODE XML2NODE::GetContent(PGLOBAL g, char *buf, int len)
  {
  RCODE rc = RC_OK;

  if (trace(1))
    htrc("GetContent\n");

  if (Content)
    xmlFree(Content);

  if ((Content = xmlNodeGetContent(Nodep))) {
    char *p1 = (char*)Content, *p2 = buf;
    bool  b = false;

    // Copy content eliminating extra characters
    for (; *p1; p1++)
      if ((p2 - buf) < len) {
        if (strchr(" \t\r\n", *p1)) {
          if (b) {
            // This to have one blank between sub-nodes
            *p2++ = ' ';
            b = false;
            }  // endif b
    
        } else {
          *p2++ = *p1;
          b = true;
        } // endif p1

      } else {
        snprintf(g->Message, sizeof(g->Message), "Truncated %-.256s content", Nodep->name);
        rc = RC_INFO;
      } // endif len

    *p2 = 0;

    if (trace(1))
      htrc("GetText buf='%-.256s' len=%d\n", buf, len);

    xmlFree(Content);
    Content = NULL;
  } else
    *buf = '\0';

  if (trace(1))
    htrc("GetContent: %-.256s\n", buf);

  return rc;
  } // end of GetContent

/******************************************************************/
/*  Set the content of a node.                                    */
/******************************************************************/
bool XML2NODE::SetContent(PGLOBAL g, char *txtp, int len)
  {
  if (trace(1))
    htrc("SetContent: %-.256s\n", txtp);

  xmlChar *buf = xmlEncodeEntitiesReentrant(Docp, BAD_CAST txtp);

  if (trace(1))
    htrc("SetContent: %-.256s -> %-.256s\n", txtp, buf);

  xmlNodeSetContent(Nodep, buf);
  xmlFree(buf);
  return false;
  } // end of SetContent

/******************************************************************/
/*  Return a clone of this node.                                  */
/******************************************************************/
PXNODE XML2NODE::Clone(PGLOBAL g, PXNODE np)
  {
  if (trace(1))
    htrc("Clone: np=%p\n", np);

  if (np) {
    ((PNODE2)np)->Nodep = Nodep;
    return np;
  } else
    return new(g) XML2NODE(Doc, Nodep);

  } // end of Clone

/******************************************************************/
/*  Return the list of all or matching children that are elements.*/
/******************************************************************/
PXLIST XML2NODE::GetChildElements(PGLOBAL g, char *xp, PXLIST lp)
  {
  if (trace(1))
    htrc("GetChildElements: %-.256s\n", xp);

  return SelectNodes(g, (xp) ? xp : (char*)"*", lp);
  } // end of GetChildElements

/******************************************************************/
/*  Return the list of nodes verifying the passed Xpath.          */
/******************************************************************/
PXLIST XML2NODE::SelectNodes(PGLOBAL g, char *xp, PXLIST lp)
  {
  if (trace(1))
    htrc("SelectNodes: %-.256s\n", xp);

  xmlNodeSetPtr nl = ((PXDOC2)Doc)->GetNodeList(g, Nodep, xp);

  if (lp) {
    ((PLIST2)lp)->Listp = nl;
    return lp;
  } else
    return new(g) XML2NODELIST(Doc, nl);

  } // end of SelectNodes

/******************************************************************/
/*  Return the first node verifying the passed Xapth.             */
/******************************************************************/
PXNODE XML2NODE::SelectSingleNode(PGLOBAL g, char *xp, PXNODE np)
  {
  if (trace(1))
    htrc("SelectSingleNode: %-.256s\n", xp);

  xmlNodeSetPtr nl = ((PXDOC2)Doc)->GetNodeList(g, Nodep, xp);

  if (nl && nl->nodeNr) {
    if (np) {
      ((PNODE2)np)->Nodep = nl->nodeTab[0];
      return np;
    } else
      return new(g) XML2NODE(Doc, nl->nodeTab[0]);

  } else
    return NULL;

  } // end of SelectSingleNode

/******************************************************************/
/*  Return the node attribute with the specified name.            */
/******************************************************************/
PXATTR XML2NODE::GetAttribute(PGLOBAL g, char *name, PXATTR ap)
  {
  xmlAttrPtr atp;

  if (trace(1))
    htrc("GetAttribute: %-.256s\n", SVP(name));

  if (name)
    atp = xmlHasProp(Nodep, BAD_CAST name);
  else
    atp = Nodep->properties;


  if (atp) {
    if (ap) {
      ((PATTR2)ap)->Atrp = atp;
      ((PATTR2)ap)->Parent = Nodep;
      return ap;
    } else
      return new(g) XML2ATTR(Doc, atp, Nodep);

  } else
    return NULL;

  } // end of GetAttribute

/******************************************************************/
/*  Add a new child node to this node and return it.              */
/******************************************************************/
PXNODE XML2NODE::AddChildNode(PGLOBAL g, PCSZ name, PXNODE np)
  {
  char *p, *pn, *pf = NULL, *nmp = PlugDup(g, name);

  if (trace(1))
    htrc("AddChildNode: %-.256s\n", name);

  // Is a prefix specified
  if ((pn = strchr(nmp, ':'))) {
    pf = nmp;
    *pn++ = '\0';                    // Separate name from prefix
  } else
    pn = nmp;

  // If name has the format m[n] only m is taken as node name
  if ((p = strchr(pn, '[')))
    p = BufAlloc(g, pn, int(p - pn));
  else
    p = pn;

  xmlNodePtr nop = xmlNewChild(Nodep, NULL, BAD_CAST p, NULL);

  if (!nop)
    return NULL;

  if (pf) {
    // Prefixed name, is it the default NS prefix?
    if (Doc->DefNs && !strcmp(pf, Doc->DefNs))
      pf = NULL;                        // Default namespace

    xmlNsPtr nsp = xmlSearchNs(Docp, nop, BAD_CAST pf);

    if (!nsp)
      nsp = xmlNewNs(nop, NULL, BAD_CAST pf);

    // Set node namespace
    nop->ns = nsp;
    *(--p) = ':';                       // Restore Xname
  } else if (Doc->DefNs && xmlSearchNs(Docp, nop, NULL))
    // Not in default namespace
    nop->ns = xmlNewNs(nop, BAD_CAST "", NULL);

  if (np)
    ((PNODE2)np)->Nodep = nop;
  else
    np = new(g) XML2NODE(Doc, nop);

  return NewChild(np);
  } // end of AddChildNode

/******************************************************************/
/*  Add a new property to this node and return it.                */
/******************************************************************/
PXATTR XML2NODE::AddProperty(PGLOBAL g, char *name, PXATTR ap)
  {
  if (trace(1))
    htrc("AddProperty: %-.256s\n", name);

  xmlAttrPtr atp = xmlNewProp(Nodep, BAD_CAST name, NULL);

  if (atp) {
    if (ap) {
      ((PATTR2)ap)->Atrp = atp;
      ((PATTR2)ap)->Parent = Nodep;
      return ap;
    } else
      return new(g) XML2ATTR(Doc, atp, Nodep);

  } else
    return NULL;

  } // end of AddProperty

/******************************************************************/
/*  Add a new text node to this node.                             */
/******************************************************************/
void XML2NODE::AddText(PGLOBAL g, PCSZ txtp)
  {
  if (trace(1))
    htrc("AddText: %-.256s\n", txtp);

  // This is to avoid a blank line when inserting a new line
  xmlNodePtr np = xmlGetLastChild(Nodep);

  if (np && np->type == XML_TEXT_NODE) {
    xmlUnlinkNode(np);
    xmlFreeNode(np);
    } // endif type

  // Add the new text
  xmlAddChild(Nodep, xmlNewText(BAD_CAST txtp));
  } // end of AddText

/******************************************************************/
/*  Remove a child node from this node.                           */
/******************************************************************/
void XML2NODE::DeleteChild(PGLOBAL g, PXNODE dnp)
  {
  xmlErrorPtr xerr;

  if (trace(1))
    htrc("DeleteChild: node=%p\n", dnp);

  xmlNodePtr np = ((PNODE2)dnp)->Nodep;
  xmlNodePtr text = np->next;

  // This is specific to row nodes
  if (text && text->type == XML_TEXT_NODE) {
    xmlUnlinkNode(text);

    if ((xerr = xmlGetLastError()))
      goto err;

    xmlFreeNode(text);

    if ((xerr = xmlGetLastError()))
      goto err;

    } // endif type

  xmlUnlinkNode(np);

  if ((xerr = xmlGetLastError()))
    goto err;

  xmlFreeNode(np);

  if ((xerr = xmlGetLastError()))
    goto err;

  Delete(dnp);

  if ((xerr = xmlGetLastError()))
    goto err;

  return;

err:
  if (trace(1))
    htrc("DeleteChild: errmsg=%-.256s\n", xerr->message);

  xmlResetError(xerr);
  } // end of DeleteChild

/* -------------------- class XML2NODELIST ---------------------- */

/******************************************************************/
/*  XML2NODELIST constructor.                                     */
/******************************************************************/
XML2NODELIST::XML2NODELIST(PXDOC dp, xmlNodeSetPtr lp)
            : XMLNODELIST(dp)
  {
  Listp = lp;
  } // end of XML2NODELIST constructor

/******************************************************************/
/*  Return the length of the list.                                */
/******************************************************************/
int XML2NODELIST::GetLength(void)
  {
  return (Listp) ? Listp->nodeNr : 0;
  } // end of GetLength

/******************************************************************/
/*  Return the nth element of the list.                           */
/******************************************************************/
PXNODE XML2NODELIST::GetItem(PGLOBAL g, int n, PXNODE np)
  {
  if (trace(1))
    htrc("GetItem: %d\n", n);

  if (!Listp || Listp->nodeNr <= n)
    return NULL;

  if (np) {
    ((PNODE2)np)->Nodep = Listp->nodeTab[n];
    return np;
  } else
    return new(g) XML2NODE(Doc, Listp->nodeTab[n]);

  } // end of GetItem

/******************************************************************/
/*  Reset the pointer on the deleted item.                        */
/******************************************************************/
bool XML2NODELIST::DropItem(PGLOBAL g, int n)
  {
  if (trace(1))
    htrc("DropItem: n=%d\n", n);

  // We should do something here
  if (!Listp || Listp->nodeNr <= n)
    return true;

  Listp->nodeTab[n] = NULL;   // This was causing Valgrind warning
  return false;
  } // end of DropItem

/* ---------------------- class XML2ATTR ------------------------ */

/******************************************************************/
/*  XML2ATTR constructor.                                         */
/******************************************************************/
XML2ATTR::XML2ATTR(PXDOC dp, xmlAttrPtr ap, xmlNodePtr np)
        : XMLATTRIBUTE(dp)
  {
  Atrp = ap;
  Parent = np;
  } // end of XML2ATTR constructor

/******************************************************************/
/*  Return the next sibling of the attribute.                     */
/******************************************************************/
PXATTR XML2ATTR::GetNext(PGLOBAL g)
  {
  if (trace(1))
    htrc("Attr GetNext\n");

  if (!Atrp->next)
    return NULL;
  else
    return new(g) XML2ATTR(Doc, Atrp->next, Atrp->parent);

  } // end of GetNext

/******************************************************************/
/*  Return the text of an attribute.                              */
/******************************************************************/
RCODE XML2ATTR::GetText(PGLOBAL g, char *buf, int len)
  {
  RCODE    rc = RC_OK;
  xmlChar *txt;

  if (trace(1))
    htrc("GetText\n");

  if ((txt = xmlGetProp(Atrp->parent, Atrp->name))) {
    // Copy the text to the buffer
    if (strlen((char*)txt) >= (unsigned)len) {
      memcpy(buf, txt, len - 1);
      buf[len - 1] = 0;
      snprintf(g->Message, sizeof(g->Message), "Truncated %-.256s content", Atrp->name);
      rc = RC_INFO;
    } else
      strcpy(buf, (const char*)txt);

    xmlFree(txt);
  } else
    *buf = '\0';

  if (trace(1))
    htrc("GetText: %-.256s\n", buf);

  return rc;
  } // end of GetText

/******************************************************************/
/*  Set the content of an attribute.                              */
/******************************************************************/
bool XML2ATTR::SetText(PGLOBAL g, char *txtp, int len)
  {
  if (trace(1))
    htrc("SetText: %-.256s %d\n", txtp, len);

  xmlSetProp(Parent, Atrp->name, BAD_CAST txtp);
  return false;
  } // end of SetText