summaryrefslogtreecommitdiff
path: root/include/libxml/parser.h
blob: 7203ca3c908be635d8c004c343e4e9d23b219c5f (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
/*
 * Summary: the core parser module
 * Description: Interfaces, constants and types related to the XML parser
 *
 * Copy: See Copyright for the status of this software.
 *
 * Author: Daniel Veillard
 */

#ifndef __XML_PARSER_H__
#define __XML_PARSER_H__

#include <stdarg.h>

#include <libxml/xmlversion.h>
#include <libxml/tree.h>
#include <libxml/dict.h>
#include <libxml/hash.h>
#include <libxml/valid.h>
#include <libxml/entities.h>
#include <libxml/xmlerror.h>
#include <libxml/xmlstring.h>

#ifdef __cplusplus
extern "C" {
#endif

/**
 * XML_DEFAULT_VERSION:
 *
 * The default version of XML used: 1.0
 */
#define XML_DEFAULT_VERSION	"1.0"

/**
 * xmlParserInput:
 *
 * An xmlParserInput is an input flow for the XML processor.
 * Each entity parsed is associated an xmlParserInput (except the
 * few predefined ones). This is the case both for internal entities
 * - in which case the flow is already completely in memory - or
 * external entities - in which case we use the buf structure for
 * progressive reading and I18N conversions to the internal UTF-8 format.
 */

/**
 * xmlParserInputDeallocate:
 * @str:  the string to deallocate
 *
 * Callback for freeing some parser input allocations.
 */
typedef void (* xmlParserInputDeallocate)(xmlChar *str);

struct _xmlParserInput {
    /* Input buffer */
    xmlParserInputBufferPtr buf;      /* UTF-8 encoded buffer */

    const char *filename;             /* The file analyzed, if any */
    const char *directory;            /* the directory/base of the file */
    const xmlChar *base;              /* Base of the array to parse */
    const xmlChar *cur;               /* Current char being parsed */
    const xmlChar *end;               /* end of the array to parse */
    int length;                       /* length if known */
    int line;                         /* Current line */
    int col;                          /* Current column */
    /*
     * NOTE: consumed is only tested for equality in the parser code,
     *       so even if there is an overflow this should not give troubles
     *       for parsing very large instances.
     */
    unsigned long consumed;           /* How many xmlChars already consumed */
    xmlParserInputDeallocate free;    /* function to deallocate the base */
    const xmlChar *encoding;          /* the encoding string for entity */
    const xmlChar *version;           /* the version string for entity */
    int standalone;                   /* Was that entity marked standalone */
    int id;                           /* an unique identifier for the entity */
};

/**
 * xmlParserNodeInfo:
 *
 * The parser can be asked to collect Node informations, i.e. at what
 * place in the file they were detected. 
 * NOTE: This is off by default and not very well tested.
 */
typedef struct _xmlParserNodeInfo xmlParserNodeInfo;
typedef xmlParserNodeInfo *xmlParserNodeInfoPtr;

struct _xmlParserNodeInfo {
  const struct _xmlNode* node;
  /* Position & line # that text that created the node begins & ends on */
  unsigned long begin_pos;
  unsigned long begin_line;
  unsigned long end_pos;
  unsigned long end_line;
};

typedef struct _xmlParserNodeInfoSeq xmlParserNodeInfoSeq;
typedef xmlParserNodeInfoSeq *xmlParserNodeInfoSeqPtr;
struct _xmlParserNodeInfoSeq {
  unsigned long maximum;
  unsigned long length;
  xmlParserNodeInfo* buffer;
};

/**
 * xmlParserInputState:
 *
 * The parser is now working also as a state based parser.
 * The recursive one use the state info for entities processing.
 */
typedef enum {
    XML_PARSER_EOF = -1,	/* nothing is to be parsed */
    XML_PARSER_START = 0,	/* nothing has been parsed */
    XML_PARSER_MISC,		/* Misc* before int subset */
    XML_PARSER_PI,		/* Within a processing instruction */
    XML_PARSER_DTD,		/* within some DTD content */
    XML_PARSER_PROLOG,		/* Misc* after internal subset */
    XML_PARSER_COMMENT,		/* within a comment */
    XML_PARSER_START_TAG,	/* within a start tag */
    XML_PARSER_CONTENT,		/* within the content */
    XML_PARSER_CDATA_SECTION,	/* within a CDATA section */
    XML_PARSER_END_TAG,		/* within a closing tag */
    XML_PARSER_ENTITY_DECL,	/* within an entity declaration */
    XML_PARSER_ENTITY_VALUE,	/* within an entity value in a decl */
    XML_PARSER_ATTRIBUTE_VALUE,	/* within an attribute value */
    XML_PARSER_SYSTEM_LITERAL,	/* within a SYSTEM value */
    XML_PARSER_EPILOG, 		/* the Misc* after the last end tag */
    XML_PARSER_IGNORE,		/* within an IGNORED section */
    XML_PARSER_PUBLIC_LITERAL 	/* within a PUBLIC value */
} xmlParserInputState;

/**
 * XML_DETECT_IDS:
 *
 * Bit in the loadsubset context field to tell to do ID/REFs lookups.
 * Use it to initialize xmlLoadExtDtdDefaultValue.
 */
#define XML_DETECT_IDS		2

/**
 * XML_COMPLETE_ATTRS:
 *
 * Bit in the loadsubset context field to tell to do complete the
 * elements attributes lists with the ones defaulted from the DTDs.
 * Use it to initialize xmlLoadExtDtdDefaultValue.
 */
#define XML_COMPLETE_ATTRS	4

/**
 * XML_SKIP_IDS:
 *
 * Bit in the loadsubset context field to tell to not do ID/REFs registration.
 * Used to initialize xmlLoadExtDtdDefaultValue in some special cases.
 */
#define XML_SKIP_IDS		8

/**
 * xmlParserMode:
 *
 * A parser can operate in various modes
 */
typedef enum {
    XML_PARSE_UNKNOWN = 0,
    XML_PARSE_DOM = 1,
    XML_PARSE_SAX = 2,
    XML_PARSE_PUSH_DOM = 3,
    XML_PARSE_PUSH_SAX = 4,
    XML_PARSE_READER = 5
} xmlParserMode;

/**
 * xmlParserCtxt:
 *
 * The parser context.
 * NOTE This doesn't completely define the parser state, the (current ?)
 *      design of the parser uses recursive function calls since this allow
 *      and easy mapping from the production rules of the specification
 *      to the actual code. The drawback is that the actual function call
 *      also reflect the parser state. However most of the parsing routines
 *      takes as the only argument the parser context pointer, so migrating
 *      to a state based parser for progressive parsing shouldn't be too hard.
 */
struct _xmlParserCtxt {
    struct _xmlSAXHandler *sax;       /* The SAX handler */
    void            *userData;        /* For SAX interface only, used by DOM build */
    xmlDocPtr           myDoc;        /* the document being built */
    int            wellFormed;        /* is the document well formed */
    int       replaceEntities;        /* shall we replace entities ? */
    const xmlChar    *version;        /* the XML version string */
    const xmlChar   *encoding;        /* the declared encoding, if any */
    int            standalone;        /* standalone document */
    int                  html;        /* an HTML(1)/Docbook(2) document */

    /* Input stream stack */
    xmlParserInputPtr  input;         /* Current input stream */
    int                inputNr;       /* Number of current input streams */
    int                inputMax;      /* Max number of input streams */
    xmlParserInputPtr *inputTab;      /* stack of inputs */

    /* Node analysis stack only used for DOM building */
    xmlNodePtr         node;          /* Current parsed Node */
    int                nodeNr;        /* Depth of the parsing stack */
    int                nodeMax;       /* Max depth of the parsing stack */
    xmlNodePtr        *nodeTab;       /* array of nodes */

    int record_info;                  /* Whether node info should be kept */
    xmlParserNodeInfoSeq node_seq;    /* info about each node parsed */

    int errNo;                        /* error code */

    int     hasExternalSubset;        /* reference and external subset */
    int             hasPErefs;        /* the internal subset has PE refs */
    int              external;        /* are we parsing an external entity */

    int                 valid;        /* is the document valid */
    int              validate;        /* shall we try to validate ? */
    xmlValidCtxt        vctxt;        /* The validity context */

    xmlParserInputState instate;      /* current type of input */
    int                 token;        /* next char look-ahead */    

    char           *directory;        /* the data directory */

    /* Node name stack */
    const xmlChar     *name;          /* Current parsed Node */
    int                nameNr;        /* Depth of the parsing stack */
    int                nameMax;       /* Max depth of the parsing stack */
    const xmlChar *   *nameTab;       /* array of nodes */

    long               nbChars;       /* number of xmlChar processed */
    long            checkIndex;       /* used by progressive parsing lookup */
    int             keepBlanks;       /* ugly but ... */
    int             disableSAX;       /* SAX callbacks are disabled */
    int               inSubset;       /* Parsing is in int 1/ext 2 subset */
    const xmlChar *    intSubName;    /* name of subset */
    xmlChar *          extSubURI;     /* URI of external subset */
    xmlChar *          extSubSystem;  /* SYSTEM ID of external subset */

    /* xml:space values */
    int *              space;         /* Should the parser preserve spaces */
    int                spaceNr;       /* Depth of the parsing stack */
    int                spaceMax;      /* Max depth of the parsing stack */
    int *              spaceTab;      /* array of space infos */

    int                depth;         /* to prevent entity substitution loops */
    xmlParserInputPtr  entity;        /* used to check entities boundaries */
    int                charset;       /* encoding of the in-memory content
				         actually an xmlCharEncoding */
    int                nodelen;       /* Those two fields are there to */
    int                nodemem;       /* Speed up large node parsing */
    int                pedantic;      /* signal pedantic warnings */
    void              *_private;      /* For user data, libxml won't touch it */

    int                loadsubset;    /* should the external subset be loaded */
    int                linenumbers;   /* set line number in element content */
    void              *catalogs;      /* document's own catalog */
    int                recovery;      /* run in recovery mode */
    int                progressive;   /* is this a progressive parsing */
    xmlDictPtr         dict;          /* dictionnary for the parser */
    const xmlChar *   *atts;          /* array for the attributes callbacks */
    int                maxatts;       /* the size of the array */
    int                docdict;       /* use strings from dict to build tree */

    /*
     * pre-interned strings
     */
    const xmlChar *str_xml;
    const xmlChar *str_xmlns;
    const xmlChar *str_xml_ns;

    /*
     * Everything below is used only by the new SAX mode
     */
    int                sax2;          /* operating in the new SAX mode */
    int                nsNr;          /* the number of inherited namespaces */
    int                nsMax;         /* the size of the arrays */
    const xmlChar *   *nsTab;         /* the array of prefix/namespace name */
    int               *attallocs;     /* which attribute were allocated */
    void *            *pushTab;       /* array of data for push */
    xmlHashTablePtr    attsDefault;   /* defaulted attributes if any */
    xmlHashTablePtr    attsSpecial;   /* non-CDATA attributes if any */
    int                nsWellFormed;  /* is the document XML Nanespace okay */
    int                options;       /* Extra options */

    /*
     * Those fields are needed only for treaming parsing so far
     */
    int               dictNames;    /* Use dictionary names for the tree */
    int               freeElemsNr;  /* number of freed element nodes */
    xmlNodePtr        freeElems;    /* List of freed element nodes */
    int               freeAttrsNr;  /* number of freed attributes nodes */
    xmlAttrPtr        freeAttrs;    /* List of freed attributes nodes */

    /*
     * the complete error informations for the last error.
     */
    xmlError          lastError;
    xmlParserMode     parseMode;    /* the parser mode */
};

/**
 * xmlSAXLocator:
 *
 * A SAX Locator.
 */
struct _xmlSAXLocator {
    const xmlChar *(*getPublicId)(void *ctx);
    const xmlChar *(*getSystemId)(void *ctx);
    int (*getLineNumber)(void *ctx);
    int (*getColumnNumber)(void *ctx);
};

/**
 * xmlSAXHandler:
 *
 * A SAX handler is bunch of callbacks called by the parser when processing
 * of the input generate data or structure informations.
 */

/**
 * resolveEntitySAXFunc:
 * @ctx:  the user data (XML parser context)
 * @publicId: The public ID of the entity
 * @systemId: The system ID of the entity
 *
 * Callback:
 * The entity loader, to control the loading of external entities,
 * the application can either:
 *    - override this resolveEntity() callback in the SAX block
 *    - or better use the xmlSetExternalEntityLoader() function to
 *      set up it's own entity resolution routine
 *
 * Returns the xmlParserInputPtr if inlined or NULL for DOM behaviour.
 */
typedef xmlParserInputPtr (*resolveEntitySAXFunc) (void *ctx,
				const xmlChar *publicId,
				const xmlChar *systemId);
/**
 * internalSubsetSAXFunc:
 * @ctx:  the user data (XML parser context)
 * @name:  the root element name
 * @ExternalID:  the external ID
 * @SystemID:  the SYSTEM ID (e.g. filename or URL)
 *
 * Callback on internal subset declaration.
 */
typedef void (*internalSubsetSAXFunc) (void *ctx,
				const xmlChar *name,
				const xmlChar *ExternalID,
				const xmlChar *SystemID);
/**
 * externalSubsetSAXFunc:
 * @ctx:  the user data (XML parser context)
 * @name:  the root element name
 * @ExternalID:  the external ID
 * @SystemID:  the SYSTEM ID (e.g. filename or URL)
 *
 * Callback on external subset declaration.
 */
typedef void (*externalSubsetSAXFunc) (void *ctx,
				const xmlChar *name,
				const xmlChar *ExternalID,
				const xmlChar *SystemID);
/**
 * getEntitySAXFunc:
 * @ctx:  the user data (XML parser context)
 * @name: The entity name
 *
 * Get an entity by name.
 *
 * Returns the xmlEntityPtr if found.
 */
typedef xmlEntityPtr (*getEntitySAXFunc) (void *ctx,
				const xmlChar *name);
/**
 * getParameterEntitySAXFunc:
 * @ctx:  the user data (XML parser context)
 * @name: The entity name
 *
 * Get a parameter entity by name.
 *
 * Returns the xmlEntityPtr if found.
 */
typedef xmlEntityPtr (*getParameterEntitySAXFunc) (void *ctx,
				const xmlChar *name);
/**
 * entityDeclSAXFunc:
 * @ctx:  the user data (XML parser context)
 * @name:  the entity name 
 * @type:  the entity type 
 * @publicId: The public ID of the entity
 * @systemId: The system ID of the entity
 * @content: the entity value (without processing).
 *
 * An entity definition has been parsed.
 */
typedef void (*entityDeclSAXFunc) (void *ctx,
				const xmlChar *name,
				int type,
				const xmlChar *publicId,
				const xmlChar *systemId,
				xmlChar *content);
/**
 * notationDeclSAXFunc:
 * @ctx:  the user data (XML parser context)
 * @name: The name of the notation
 * @publicId: The public ID of the entity
 * @systemId: The system ID of the entity
 *
 * What to do when a notation declaration has been parsed.
 */
typedef void (*notationDeclSAXFunc)(void *ctx,
				const xmlChar *name,
				const xmlChar *publicId,
				const xmlChar *systemId);
/**
 * attributeDeclSAXFunc:
 * @ctx:  the user data (XML parser context)
 * @elem:  the name of the element
 * @fullname:  the attribute name 
 * @type:  the attribute type 
 * @def:  the type of default value
 * @defaultValue: the attribute default value
 * @tree:  the tree of enumerated value set
 *
 * An attribute definition has been parsed.
 */
typedef void (*attributeDeclSAXFunc)(void *ctx,
				const xmlChar *elem,
				const xmlChar *fullname,
				int type,
				int def,
				const xmlChar *defaultValue,
				xmlEnumerationPtr tree);
/**
 * elementDeclSAXFunc:
 * @ctx:  the user data (XML parser context)
 * @name:  the element name 
 * @type:  the element type 
 * @content: the element value tree
 *
 * An element definition has been parsed.
 */
typedef void (*elementDeclSAXFunc)(void *ctx,
				const xmlChar *name,
				int type,
				xmlElementContentPtr content);
/**
 * unparsedEntityDeclSAXFunc:
 * @ctx:  the user data (XML parser context)
 * @name: The name of the entity
 * @publicId: The public ID of the entity
 * @systemId: The system ID of the entity
 * @notationName: the name of the notation
 *
 * What to do when an unparsed entity declaration is parsed.
 */
typedef void (*unparsedEntityDeclSAXFunc)(void *ctx,
				const xmlChar *name,
				const xmlChar *publicId,
				const xmlChar *systemId,
				const xmlChar *notationName);
/**
 * setDocumentLocatorSAXFunc:
 * @ctx:  the user data (XML parser context)
 * @loc: A SAX Locator
 *
 * Receive the document locator at startup, actually xmlDefaultSAXLocator.
 * Everything is available on the context, so this is useless in our case.
 */
typedef void (*setDocumentLocatorSAXFunc) (void *ctx,
				xmlSAXLocatorPtr loc);
/**
 * startDocumentSAXFunc:
 * @ctx:  the user data (XML parser context)
 *
 * Called when the document start being processed.
 */
typedef void (*startDocumentSAXFunc) (void *ctx);
/**
 * endDocumentSAXFunc:
 * @ctx:  the user data (XML parser context)
 *
 * Called when the document end has been detected.
 */
typedef void (*endDocumentSAXFunc) (void *ctx);
/**
 * startElementSAXFunc:
 * @ctx:  the user data (XML parser context)
 * @name:  The element name, including namespace prefix
 * @atts:  An array of name/value attributes pairs, NULL terminated
 *
 * Called when an opening tag has been processed.
 */
typedef void (*startElementSAXFunc) (void *ctx,
				const xmlChar *name,
				const xmlChar **atts);
/**
 * endElementSAXFunc:
 * @ctx:  the user data (XML parser context)
 * @name:  The element name
 *
 * Called when the end of an element has been detected.
 */
typedef void (*endElementSAXFunc) (void *ctx,
				const xmlChar *name);
/**
 * attributeSAXFunc:
 * @ctx:  the user data (XML parser context)
 * @name:  The attribute name, including namespace prefix
 * @value:  The attribute value
 *
 * Handle an attribute that has been read by the parser.
 * The default handling is to convert the attribute into an
 * DOM subtree and past it in a new xmlAttr element added to
 * the element.
 */
typedef void (*attributeSAXFunc) (void *ctx,
				const xmlChar *name,
				const xmlChar *value);
/**
 * referenceSAXFunc:
 * @ctx:  the user data (XML parser context)
 * @name:  The entity name
 *
 * Called when an entity reference is detected. 
 */
typedef void (*referenceSAXFunc) (void *ctx,
				const xmlChar *name);
/**
 * charactersSAXFunc:
 * @ctx:  the user data (XML parser context)
 * @ch:  a xmlChar string
 * @len: the number of xmlChar
 *
 * Receiving some chars from the parser.
 */
typedef void (*charactersSAXFunc) (void *ctx,
				const xmlChar *ch,
				int len);
/**
 * ignorableWhitespaceSAXFunc:
 * @ctx:  the user data (XML parser context)
 * @ch:  a xmlChar string
 * @len: the number of xmlChar
 *
 * Receiving some ignorable whitespaces from the parser.
 * UNUSED: by default the DOM building will use characters.
 */
typedef void (*ignorableWhitespaceSAXFunc) (void *ctx,
				const xmlChar *ch,
				int len);
/**
 * processingInstructionSAXFunc:
 * @ctx:  the user data (XML parser context)
 * @target:  the target name
 * @data: the PI data's
 *
 * A processing instruction has been parsed.
 */
typedef void (*processingInstructionSAXFunc) (void *ctx,
				const xmlChar *target,
				const xmlChar *data);
/**
 * commentSAXFunc:
 * @ctx:  the user data (XML parser context)
 * @value:  the comment content
 *
 * A comment has been parsed.
 */
typedef void (*commentSAXFunc) (void *ctx,
				const xmlChar *value);
/**
 * cdataBlockSAXFunc:
 * @ctx:  the user data (XML parser context)
 * @value:  The pcdata content
 * @len:  the block length
 *
 * Called when a pcdata block has been parsed.
 */
typedef void (*cdataBlockSAXFunc) (
	                        void *ctx,
				const xmlChar *value,
				int len);
/**
 * warningSAXFunc:
 * @ctx:  an XML parser context
 * @msg:  the message to display/transmit
 * @...:  extra parameters for the message display
 * 
 * Display and format a warning messages, callback.
 */
typedef void (*warningSAXFunc) (void *ctx,
				const char *msg, ...);
/**
 * errorSAXFunc:
 * @ctx:  an XML parser context
 * @msg:  the message to display/transmit
 * @...:  extra parameters for the message display
 * 
 * Display and format an error messages, callback.
 */
typedef void (*errorSAXFunc) (void *ctx,
				const char *msg, ...);
/**
 * fatalErrorSAXFunc:
 * @ctx:  an XML parser context
 * @msg:  the message to display/transmit
 * @...:  extra parameters for the message display
 * 
 * Display and format fatal error messages, callback.
 * Note: so far fatalError() SAX callbacks are not used, error()
 *       get all the callbacks for errors.
 */
typedef void (*fatalErrorSAXFunc) (void *ctx,
				const char *msg, ...);
/**
 * isStandaloneSAXFunc:
 * @ctx:  the user data (XML parser context)
 *
 * Is this document tagged standalone?
 *
 * Returns 1 if true
 */
typedef int (*isStandaloneSAXFunc) (void *ctx);
/**
 * hasInternalSubsetSAXFunc:
 * @ctx:  the user data (XML parser context)
 *
 * Does this document has an internal subset.
 *
 * Returns 1 if true
 */
typedef int (*hasInternalSubsetSAXFunc) (void *ctx);

/**
 * hasExternalSubsetSAXFunc:
 * @ctx:  the user data (XML parser context)
 *
 * Does this document has an external subset?
 *
 * Returns 1 if true
 */
typedef int (*hasExternalSubsetSAXFunc) (void *ctx);

/************************************************************************
 *									*
 *			The SAX version 2 API extensions		*
 *									*
 ************************************************************************/
/**
 * XML_SAX2_MAGIC:
 *
 * Special constant found in SAX2 blocks initialized fields
 */
#define XML_SAX2_MAGIC 0xDEEDBEAF

/**
 * startElementNsSAX2Func:
 * @ctx:  the user data (XML parser context)
 * @localname:  the local name of the element
 * @prefix:  the element namespace prefix if available
 * @URI:  the element namespace name if available
 * @nb_namespaces:  number of namespace definitions on that node
 * @namespaces:  pointer to the array of prefix/URI pairs namespace definitions
 * @nb_attributes:  the number of attributes on that node
 * @nb_defaulted:  the number of defaulted attributes. The defaulted
 *                  ones are at the end of the array
 * @attributes:  pointer to the array of (localname/prefix/URI/value/end)
 *               attribute values.
 *
 * SAX2 callback when an element start has been detected by the parser.
 * It provides the namespace informations for the element, as well as
 * the new namespace declarations on the element.
 */

typedef void (*startElementNsSAX2Func) (void *ctx,
					const xmlChar *localname,
					const xmlChar *prefix,
					const xmlChar *URI,
					int nb_namespaces,
					const xmlChar **namespaces,
					int nb_attributes,
					int nb_defaulted,
					const xmlChar **attributes);
 
/**
 * endElementNsSAX2Func:
 * @ctx:  the user data (XML parser context)
 * @localname:  the local name of the element
 * @prefix:  the element namespace prefix if available
 * @URI:  the element namespace name if available
 *
 * SAX2 callback when an element end has been detected by the parser.
 * It provides the namespace informations for the element.
 */

typedef void (*endElementNsSAX2Func)   (void *ctx,
					const xmlChar *localname,
					const xmlChar *prefix,
					const xmlChar *URI);


struct _xmlSAXHandler {
    internalSubsetSAXFunc internalSubset;
    isStandaloneSAXFunc isStandalone;
    hasInternalSubsetSAXFunc hasInternalSubset;
    hasExternalSubsetSAXFunc hasExternalSubset;
    resolveEntitySAXFunc resolveEntity;
    getEntitySAXFunc getEntity;
    entityDeclSAXFunc entityDecl;
    notationDeclSAXFunc notationDecl;
    attributeDeclSAXFunc attributeDecl;
    elementDeclSAXFunc elementDecl;
    unparsedEntityDeclSAXFunc unparsedEntityDecl;
    setDocumentLocatorSAXFunc setDocumentLocator;
    startDocumentSAXFunc startDocument;
    endDocumentSAXFunc endDocument;
    startElementSAXFunc startElement;
    endElementSAXFunc endElement;
    referenceSAXFunc reference;
    charactersSAXFunc characters;
    ignorableWhitespaceSAXFunc ignorableWhitespace;
    processingInstructionSAXFunc processingInstruction;
    commentSAXFunc comment;
    warningSAXFunc warning;
    errorSAXFunc error;
    fatalErrorSAXFunc fatalError; /* unused error() get all the errors */
    getParameterEntitySAXFunc getParameterEntity;
    cdataBlockSAXFunc cdataBlock;
    externalSubsetSAXFunc externalSubset;
    unsigned int initialized;
    /* The following fields are extensions available only on version 2 */
    void *_private;
    startElementNsSAX2Func startElementNs;
    endElementNsSAX2Func endElementNs;
    xmlStructuredErrorFunc serror;
};

/*
 * SAX Version 1
 */
typedef struct _xmlSAXHandlerV1 xmlSAXHandlerV1;
typedef xmlSAXHandlerV1 *xmlSAXHandlerV1Ptr;
struct _xmlSAXHandlerV1 {
    internalSubsetSAXFunc internalSubset;
    isStandaloneSAXFunc isStandalone;
    hasInternalSubsetSAXFunc hasInternalSubset;
    hasExternalSubsetSAXFunc hasExternalSubset;
    resolveEntitySAXFunc resolveEntity;
    getEntitySAXFunc getEntity;
    entityDeclSAXFunc entityDecl;
    notationDeclSAXFunc notationDecl;
    attributeDeclSAXFunc attributeDecl;
    elementDeclSAXFunc elementDecl;
    unparsedEntityDeclSAXFunc unparsedEntityDecl;
    setDocumentLocatorSAXFunc setDocumentLocator;
    startDocumentSAXFunc startDocument;
    endDocumentSAXFunc endDocument;
    startElementSAXFunc startElement;
    endElementSAXFunc endElement;
    referenceSAXFunc reference;
    charactersSAXFunc characters;
    ignorableWhitespaceSAXFunc ignorableWhitespace;
    processingInstructionSAXFunc processingInstruction;
    commentSAXFunc comment;
    warningSAXFunc warning;
    errorSAXFunc error;
    fatalErrorSAXFunc fatalError; /* unused error() get all the errors */
    getParameterEntitySAXFunc getParameterEntity;
    cdataBlockSAXFunc cdataBlock;
    externalSubsetSAXFunc externalSubset;
    unsigned int initialized;
};


/**
 * xmlExternalEntityLoader:
 * @URL: The System ID of the resource requested
 * @ID: The Public ID of the resource requested
 * @context: the XML parser context 
 *
 * External entity loaders types.
 *
 * Returns the entity input parser.
 */
typedef xmlParserInputPtr (*xmlExternalEntityLoader) (const char *URL,
					 const char *ID,
					 xmlParserCtxtPtr context);

#ifdef __cplusplus
}
#endif

#include <libxml/encoding.h>
#include <libxml/xmlIO.h>
#include <libxml/globals.h>

#ifdef __cplusplus
extern "C" {
#endif


/*
 * Init/Cleanup
 */
XMLPUBFUN void XMLCALL		
		xmlInitParser		(void);
XMLPUBFUN void XMLCALL		
		xmlCleanupParser	(void);

/*
 * Input functions
 */
XMLPUBFUN int XMLCALL		
		xmlParserInputRead	(xmlParserInputPtr in,
					 int len);
XMLPUBFUN int XMLCALL		
		xmlParserInputGrow	(xmlParserInputPtr in,
					 int len);

/*
 * Basic parsing Interfaces
 */
#ifdef LIBXML_SAX1_ENABLED
XMLPUBFUN xmlDocPtr XMLCALL	
		xmlParseDoc		(const xmlChar *cur);
XMLPUBFUN xmlDocPtr XMLCALL	
		xmlParseFile		(const char *filename);
XMLPUBFUN xmlDocPtr XMLCALL	
		xmlParseMemory		(const char *buffer,
					 int size);
#endif /* LIBXML_SAX1_ENABLED */
XMLPUBFUN int XMLCALL		
		xmlSubstituteEntitiesDefault(int val);
XMLPUBFUN int XMLCALL		
		xmlKeepBlanksDefault	(int val);
XMLPUBFUN void XMLCALL		
		xmlStopParser		(xmlParserCtxtPtr ctxt);
XMLPUBFUN int XMLCALL		
		xmlPedanticParserDefault(int val);
XMLPUBFUN int XMLCALL		
		xmlLineNumbersDefault	(int val);

#ifdef LIBXML_SAX1_ENABLED
/*
 * Recovery mode 
 */
XMLPUBFUN xmlDocPtr XMLCALL	
		xmlRecoverDoc		(xmlChar *cur);
XMLPUBFUN xmlDocPtr XMLCALL	
		xmlRecoverMemory	(const char *buffer,
					 int size);
XMLPUBFUN xmlDocPtr XMLCALL	
		xmlRecoverFile		(const char *filename);
#endif /* LIBXML_SAX1_ENABLED */

/*
 * Less common routines and SAX interfaces
 */
XMLPUBFUN int XMLCALL		
		xmlParseDocument	(xmlParserCtxtPtr ctxt);
XMLPUBFUN int XMLCALL		
		xmlParseExtParsedEnt	(xmlParserCtxtPtr ctxt);
#ifdef LIBXML_SAX1_ENABLED
XMLPUBFUN int XMLCALL		
		xmlSAXUserParseFile	(xmlSAXHandlerPtr sax,
					 void *user_data,
					 const char *filename);
XMLPUBFUN int XMLCALL		
		xmlSAXUserParseMemory	(xmlSAXHandlerPtr sax,
					 void *user_data,
					 const char *buffer,
					 int size);
XMLPUBFUN xmlDocPtr XMLCALL	
		xmlSAXParseDoc		(xmlSAXHandlerPtr sax,
					 const xmlChar *cur,
					 int recovery);
XMLPUBFUN xmlDocPtr XMLCALL	
		xmlSAXParseMemory	(xmlSAXHandlerPtr sax,
					 const char *buffer,
                                   	 int size,
					 int recovery);
XMLPUBFUN xmlDocPtr XMLCALL	
		xmlSAXParseMemoryWithData (xmlSAXHandlerPtr sax,
					 const char *buffer,
                                   	 int size,
					 int recovery,
					 void *data);
XMLPUBFUN xmlDocPtr XMLCALL	
		xmlSAXParseFile		(xmlSAXHandlerPtr sax,
					 const char *filename,
					 int recovery);
XMLPUBFUN xmlDocPtr XMLCALL	
		xmlSAXParseFileWithData	(xmlSAXHandlerPtr sax,
					 const char *filename,
					 int recovery,
					 void *data);
XMLPUBFUN xmlDocPtr XMLCALL	
		xmlSAXParseEntity	(xmlSAXHandlerPtr sax,
					 const char *filename);
XMLPUBFUN xmlDocPtr XMLCALL	
		xmlParseEntity		(const char *filename);
#endif /* LIBXML_SAX1_ENABLED */

#ifdef LIBXML_VALID_ENABLED
XMLPUBFUN xmlDtdPtr XMLCALL	
		xmlSAXParseDTD		(xmlSAXHandlerPtr sax,
					 const xmlChar *ExternalID,
					 const xmlChar *SystemID);
XMLPUBFUN xmlDtdPtr XMLCALL	
		xmlParseDTD		(const xmlChar *ExternalID,
					 const xmlChar *SystemID);
XMLPUBFUN xmlDtdPtr XMLCALL	
		xmlIOParseDTD		(xmlSAXHandlerPtr sax,
					 xmlParserInputBufferPtr input,
					 xmlCharEncoding enc);
#endif /* LIBXML_VALID_ENABLE */
#ifdef LIBXML_SAX1_ENABLED
XMLPUBFUN int XMLCALL	
		xmlParseBalancedChunkMemory(xmlDocPtr doc,
					 xmlSAXHandlerPtr sax,
					 void *user_data,
					 int depth,
					 const xmlChar *string,
					 xmlNodePtr *lst);
#endif /* LIBXML_SAX1_ENABLED */
XMLPUBFUN xmlParserErrors XMLCALL
		xmlParseInNodeContext	(xmlNodePtr node,
					 const char *data,
					 int datalen,
					 int options,
					 xmlNodePtr *lst);
#ifdef LIBXML_SAX1_ENABLED
XMLPUBFUN int XMLCALL          
		xmlParseBalancedChunkMemoryRecover(xmlDocPtr doc,
                     xmlSAXHandlerPtr sax,
                     void *user_data,
                     int depth,
                     const xmlChar *string,
                     xmlNodePtr *lst,
                     int recover);
XMLPUBFUN int XMLCALL		
		xmlParseExternalEntity	(xmlDocPtr doc,
					 xmlSAXHandlerPtr sax,
					 void *user_data,
					 int depth,
					 const xmlChar *URL,
					 const xmlChar *ID,
					 xmlNodePtr *lst);
#endif /* LIBXML_SAX1_ENABLED */
XMLPUBFUN int XMLCALL		
		xmlParseCtxtExternalEntity(xmlParserCtxtPtr ctx,
					 const xmlChar *URL,
					 const xmlChar *ID,
					 xmlNodePtr *lst);

/*
 * Parser contexts handling.
 */
XMLPUBFUN xmlParserCtxtPtr XMLCALL	
		xmlNewParserCtxt	(void);
XMLPUBFUN int XMLCALL		
		xmlInitParserCtxt	(xmlParserCtxtPtr ctxt);
XMLPUBFUN void XMLCALL		
		xmlClearParserCtxt	(xmlParserCtxtPtr ctxt);
XMLPUBFUN void XMLCALL		
		xmlFreeParserCtxt	(xmlParserCtxtPtr ctxt);
#ifdef LIBXML_SAX1_ENABLED
XMLPUBFUN void XMLCALL		
		xmlSetupParserForBuffer	(xmlParserCtxtPtr ctxt,
					 const xmlChar* buffer,
					 const char *filename);
#endif /* LIBXML_SAX1_ENABLED */
XMLPUBFUN xmlParserCtxtPtr XMLCALL 
		xmlCreateDocParserCtxt	(const xmlChar *cur);

#ifdef LIBXML_LEGACY_ENABLED
/*
 * Reading/setting optional parsing features.
 */
XMLPUBFUN int XMLCALL		
		xmlGetFeaturesList	(int *len,
					 const char **result);
XMLPUBFUN int XMLCALL		
		xmlGetFeature		(xmlParserCtxtPtr ctxt,
					 const char *name,
					 void *result);
XMLPUBFUN int XMLCALL		
		xmlSetFeature		(xmlParserCtxtPtr ctxt,
					 const char *name,
					 void *value);
#endif /* LIBXML_LEGACY_ENABLED */

#ifdef LIBXML_PUSH_ENABLED
/*
 * Interfaces for the Push mode.
 */
XMLPUBFUN xmlParserCtxtPtr XMLCALL 
		xmlCreatePushParserCtxt(xmlSAXHandlerPtr sax,
					 void *user_data,
					 const char *chunk,
					 int size,
					 const char *filename);
XMLPUBFUN int XMLCALL		 
		xmlParseChunk		(xmlParserCtxtPtr ctxt,
					 const char *chunk,
					 int size,
					 int terminate);
#endif /* LIBXML_PUSH_ENABLED */

/*
 * Special I/O mode.
 */

XMLPUBFUN xmlParserCtxtPtr XMLCALL 
		xmlCreateIOParserCtxt	(xmlSAXHandlerPtr sax,
					 void *user_data,
					 xmlInputReadCallback   ioread,
					 xmlInputCloseCallback  ioclose,
					 void *ioctx,
					 xmlCharEncoding enc);

XMLPUBFUN xmlParserInputPtr XMLCALL 
		xmlNewIOInputStream	(xmlParserCtxtPtr ctxt,
					 xmlParserInputBufferPtr input,
					 xmlCharEncoding enc);

/*
 * Node infos.
 */
XMLPUBFUN const xmlParserNodeInfo* XMLCALL
		xmlParserFindNodeInfo	(const xmlParserCtxtPtr ctxt,
				         const xmlNodePtr node);
XMLPUBFUN void XMLCALL		
		xmlInitNodeInfoSeq	(xmlParserNodeInfoSeqPtr seq);
XMLPUBFUN void XMLCALL		
		xmlClearNodeInfoSeq	(xmlParserNodeInfoSeqPtr seq);
XMLPUBFUN unsigned long XMLCALL 
		xmlParserFindNodeInfoIndex(const xmlParserNodeInfoSeqPtr seq,
                                         const xmlNodePtr node);
XMLPUBFUN void XMLCALL		
		xmlParserAddNodeInfo	(xmlParserCtxtPtr ctxt,
					 const xmlParserNodeInfoPtr info);

/*
 * External entities handling actually implemented in xmlIO.
 */

XMLPUBFUN void XMLCALL		
		xmlSetExternalEntityLoader(xmlExternalEntityLoader f);
XMLPUBFUN xmlExternalEntityLoader XMLCALL
		xmlGetExternalEntityLoader(void);
XMLPUBFUN xmlParserInputPtr XMLCALL
		xmlLoadExternalEntity	(const char *URL,
					 const char *ID,
					 xmlParserCtxtPtr ctxt);

/*
 * Index lookup, actually implemented in the encoding module
 */
XMLPUBFUN long XMLCALL
		xmlByteConsumed		(xmlParserCtxtPtr ctxt);

/*
 * New set of simpler/more flexible APIs
 */
/**
 * xmlParserOption:
 *
 * This is the set of XML parser options that can be passed down
 * to the xmlReadDoc() and similar calls.
 */
typedef enum {
    XML_PARSE_RECOVER	= 1<<0,	/* recover on errors */
    XML_PARSE_NOENT	= 1<<1,	/* substitute entities */
    XML_PARSE_DTDLOAD	= 1<<2,	/* load the external subset */
    XML_PARSE_DTDATTR	= 1<<3,	/* default DTD attributes */
    XML_PARSE_DTDVALID	= 1<<4,	/* validate with the DTD */
    XML_PARSE_NOERROR	= 1<<5,	/* suppress error reports */
    XML_PARSE_NOWARNING	= 1<<6,	/* suppress warning reports */
    XML_PARSE_PEDANTIC	= 1<<7,	/* pedantic error reporting */
    XML_PARSE_NOBLANKS	= 1<<8,	/* remove blank nodes */
    XML_PARSE_SAX1	= 1<<9,	/* use the SAX1 interface internally */
    XML_PARSE_XINCLUDE	= 1<<10,/* Implement XInclude substitition  */
    XML_PARSE_NONET	= 1<<11,/* Forbid network access */
    XML_PARSE_NODICT	= 1<<12,/* Do not reuse the context dictionnary */
    XML_PARSE_NSCLEAN	= 1<<13,/* remove redundant namespaces declarations */
    XML_PARSE_NOCDATA	= 1<<14,/* merge CDATA as text nodes */
    XML_PARSE_NOXINCNODE= 1<<15 /* do not generate XINCLUDE START/END nodes */
} xmlParserOption;

XMLPUBFUN void XMLCALL
		xmlCtxtReset		(xmlParserCtxtPtr ctxt);
XMLPUBFUN int XMLCALL
		xmlCtxtResetPush	(xmlParserCtxtPtr ctxt,
					 const char *chunk,
					 int size,
					 const char *filename,
					 const char *encoding);
XMLPUBFUN int XMLCALL
		xmlCtxtUseOptions	(xmlParserCtxtPtr ctxt,
					 int options);
XMLPUBFUN xmlDocPtr XMLCALL
		xmlReadDoc		(const xmlChar *cur,
					 const char *URL,
					 const char *encoding,
					 int options);
XMLPUBFUN xmlDocPtr XMLCALL
		xmlReadFile		(const char *URL,
					 const char *encoding,
					 int options);
XMLPUBFUN xmlDocPtr XMLCALL
		xmlReadMemory		(const char *buffer,
					 int size,
					 const char *URL,
					 const char *encoding,
					 int options);
XMLPUBFUN xmlDocPtr XMLCALL
		xmlReadFd		(int fd,
					 const char *URL,
					 const char *encoding,
					 int options);
XMLPUBFUN xmlDocPtr XMLCALL
		xmlReadIO		(xmlInputReadCallback ioread,
					 xmlInputCloseCallback ioclose,
					 void *ioctx,
					 const char *URL,
					 const char *encoding,
					 int options);
XMLPUBFUN xmlDocPtr XMLCALL
		xmlCtxtReadDoc		(xmlParserCtxtPtr ctxt,
					 const xmlChar *cur,
					 const char *URL,
					 const char *encoding,
					 int options);
XMLPUBFUN xmlDocPtr XMLCALL
		xmlCtxtReadFile		(xmlParserCtxtPtr ctxt,
					 const char *filename,
					 const char *encoding,
					 int options);
XMLPUBFUN xmlDocPtr XMLCALL
		xmlCtxtReadMemory		(xmlParserCtxtPtr ctxt,
					 const char *buffer,
					 int size,
					 const char *URL,
					 const char *encoding,
					 int options);
XMLPUBFUN xmlDocPtr XMLCALL
		xmlCtxtReadFd		(xmlParserCtxtPtr ctxt,
					 int fd,
					 const char *URL,
					 const char *encoding,
					 int options);
XMLPUBFUN xmlDocPtr XMLCALL
		xmlCtxtReadIO		(xmlParserCtxtPtr ctxt,
					 xmlInputReadCallback ioread,
					 xmlInputCloseCallback ioclose,
					 void *ioctx,
					 const char *URL,
					 const char *encoding,
					 int options);

#ifdef __cplusplus
}
#endif
#endif /* __XML_PARSER_H__ */