1 /*
2 * xmlreader.c: implements the xmlTextReader streaming node API
3 *
4 * NOTE:
5 * XmlTextReader.Normalization Property won't be supported, since
6 * it makes the parser non compliant to the XML recommendation
7 *
8 * See Copyright for the status of this software.
9 *
10 * daniel@veillard.com
11 */
12
13 /*
14 * TODOs:
15 * - XML Schemas validation
16 */
17 #define IN_LIBXML
18 #include "libxml.h"
19
20 #ifdef LIBXML_READER_ENABLED
21 #include <string.h> /* for memset() only ! */
22 #include <stdarg.h>
23
24 #ifdef HAVE_CTYPE_H
25 #include <ctype.h>
26 #endif
27 #ifdef HAVE_STDLIB_H
28 #include <stdlib.h>
29 #endif
30
31 #include <libxml/xmlmemory.h>
32 #include <libxml/xmlIO.h>
33 #include <libxml/xmlreader.h>
34 #include <libxml/parserInternals.h>
35 #ifdef LIBXML_SCHEMAS_ENABLED
36 #include <libxml/relaxng.h>
37 #include <libxml/xmlschemas.h>
38 #endif
39 #include <libxml/uri.h>
40 #ifdef LIBXML_XINCLUDE_ENABLED
41 #include <libxml/xinclude.h>
42 #endif
43 #ifdef LIBXML_PATTERN_ENABLED
44 #include <libxml/pattern.h>
45 #endif
46
47 #include "buf.h"
48
49 #define MAX_ERR_MSG_SIZE 64000
50
51 /*
52 * The following VA_COPY was coded following an example in
53 * the Samba project. It may not be sufficient for some
54 * esoteric implementations of va_list but (hopefully) will
55 * be sufficient for libxml2.
56 */
57 #ifndef VA_COPY
58 #ifdef HAVE_VA_COPY
59 #define VA_COPY(dest, src) va_copy(dest, src)
60 #else
61 #ifdef HAVE___VA_COPY
62 #define VA_COPY(dest,src) __va_copy(dest, src)
63 #else
64 #ifndef VA_LIST_IS_ARRAY
65 #define VA_COPY(dest,src) (dest) = (src)
66 #else
67 #include <string.h>
68 #define VA_COPY(dest,src) memcpy((char *)(dest),(char *)(src),sizeof(va_list))
69 #endif
70 #endif
71 #endif
72 #endif
73
74 /* #define DEBUG_CALLBACKS */
75 /* #define DEBUG_READER */
76
77 /**
78 * TODO:
79 *
80 * macro to flag unimplemented blocks
81 */
82 #define TODO \
83 xmlGenericError(xmlGenericErrorContext, \
84 "Unimplemented block at %s:%d\n", \
85 __FILE__, __LINE__);
86
87 #ifdef DEBUG_READER
88 #define DUMP_READER xmlTextReaderDebug(reader);
89 #else
90 #define DUMP_READER
91 #endif
92
93 #define CHUNK_SIZE 512
94 /************************************************************************
95 * *
96 * The parser: maps the Text Reader API on top of the existing *
97 * parsing routines building a tree *
98 * *
99 ************************************************************************/
100
101 #define XML_TEXTREADER_INPUT 1
102 #define XML_TEXTREADER_CTXT 2
103
104 typedef enum {
105 XML_TEXTREADER_NONE = -1,
106 XML_TEXTREADER_START= 0,
107 XML_TEXTREADER_ELEMENT= 1,
108 XML_TEXTREADER_END= 2,
109 XML_TEXTREADER_EMPTY= 3,
110 XML_TEXTREADER_BACKTRACK= 4,
111 XML_TEXTREADER_DONE= 5,
112 XML_TEXTREADER_ERROR= 6
113 } xmlTextReaderState;
114
115 typedef enum {
116 XML_TEXTREADER_NOT_VALIDATE = 0,
117 XML_TEXTREADER_VALIDATE_DTD = 1,
118 XML_TEXTREADER_VALIDATE_RNG = 2,
119 XML_TEXTREADER_VALIDATE_XSD = 4
120 } xmlTextReaderValidate;
121
122 struct _xmlTextReader {
123 int mode; /* the parsing mode */
124 xmlDocPtr doc; /* when walking an existing doc */
125 xmlTextReaderValidate validate;/* is there any validation */
126 int allocs; /* what structure were deallocated */
127 xmlTextReaderState state;
128 xmlParserCtxtPtr ctxt; /* the parser context */
129 xmlSAXHandlerPtr sax; /* the parser SAX callbacks */
130 xmlParserInputBufferPtr input; /* the input */
131 startElementSAXFunc startElement;/* initial SAX callbacks */
132 endElementSAXFunc endElement; /* idem */
133 startElementNsSAX2Func startElementNs;/* idem */
134 endElementNsSAX2Func endElementNs; /* idem */
135 charactersSAXFunc characters;
136 cdataBlockSAXFunc cdataBlock;
137 unsigned int base; /* base of the segment in the input */
138 unsigned int cur; /* current position in the input */
139 xmlNodePtr node; /* current node */
140 xmlNodePtr curnode;/* current attribute node */
141 int depth; /* depth of the current node */
142 xmlNodePtr faketext;/* fake xmlNs chld */
143 int preserve;/* preserve the resulting document */
144 xmlBufPtr buffer; /* used to return const xmlChar * */
145 xmlDictPtr dict; /* the context dictionnary */
146
147 /* entity stack when traversing entities content */
148 xmlNodePtr ent; /* Current Entity Ref Node */
149 int entNr; /* Depth of the entities stack */
150 int entMax; /* Max depth of the entities stack */
151 xmlNodePtr *entTab; /* array of entities */
152
153 /* error handling */
154 xmlTextReaderErrorFunc errorFunc; /* callback function */
155 void *errorFuncArg; /* callback function user argument */
156
157 #ifdef LIBXML_SCHEMAS_ENABLED
158 /* Handling of RelaxNG validation */
159 xmlRelaxNGPtr rngSchemas; /* The Relax NG schemas */
160 xmlRelaxNGValidCtxtPtr rngValidCtxt;/* The Relax NG validation context */
161 int rngPreserveCtxt; /* 1 if the context was provided by the user */
162 int rngValidErrors;/* The number of errors detected */
163 xmlNodePtr rngFullNode; /* the node if RNG not progressive */
164 /* Handling of Schemas validation */
165 xmlSchemaPtr xsdSchemas; /* The Schemas schemas */
166 xmlSchemaValidCtxtPtr xsdValidCtxt;/* The Schemas validation context */
167 int xsdPreserveCtxt; /* 1 if the context was provided by the user */
168 int xsdValidErrors;/* The number of errors detected */
169 xmlSchemaSAXPlugPtr xsdPlug; /* the schemas plug in SAX pipeline */
170 #endif
171 #ifdef LIBXML_XINCLUDE_ENABLED
172 /* Handling of XInclude processing */
173 int xinclude; /* is xinclude asked for */
174 const xmlChar * xinclude_name; /* the xinclude name from dict */
175 xmlXIncludeCtxtPtr xincctxt; /* the xinclude context */
176 int in_xinclude; /* counts for xinclude */
177 #endif
178 #ifdef LIBXML_PATTERN_ENABLED
179 int patternNr; /* number of preserve patterns */
180 int patternMax; /* max preserve patterns */
181 xmlPatternPtr *patternTab; /* array of preserve patterns */
182 #endif
183 int preserves; /* level of preserves */
184 int parserFlags; /* the set of options set */
185 /* Structured error handling */
186 xmlStructuredErrorFunc sErrorFunc; /* callback function */
187 };
188
189 #define NODE_IS_EMPTY 0x1
190 #define NODE_IS_PRESERVED 0x2
191 #define NODE_IS_SPRESERVED 0x4
192
193 /**
194 * CONSTSTR:
195 *
196 * Macro used to return an interned string
197 */
198 #define CONSTSTR(str) xmlDictLookup(reader->dict, (str), -1)
199 #define CONSTQSTR(p, str) xmlDictQLookup(reader->dict, (p), (str))
200
201 static int xmlTextReaderReadTree(xmlTextReaderPtr reader);
202 static int xmlTextReaderNextTree(xmlTextReaderPtr reader);
203
204 /************************************************************************
205 * *
206 * Our own version of the freeing routines as we recycle nodes *
207 * *
208 ************************************************************************/
209 /**
210 * DICT_FREE:
211 * @str: a string
212 *
213 * Free a string if it is not owned by the "dict" dictionnary in the
214 * current scope
215 */
216 #define DICT_FREE(str) \
217 if ((str) && ((!dict) || \
218 (xmlDictOwns(dict, (const xmlChar *)(str)) == 0))) \
219 xmlFree((char *)(str));
220
221 static void xmlTextReaderFreeNode(xmlTextReaderPtr reader, xmlNodePtr cur);
222 static void xmlTextReaderFreeNodeList(xmlTextReaderPtr reader, xmlNodePtr cur);
223
224 /**
225 * xmlFreeID:
226 * @not: A id
227 *
228 * Deallocate the memory used by an id definition
229 */
230 static void
xmlFreeID(xmlIDPtr id)231 xmlFreeID(xmlIDPtr id) {
232 xmlDictPtr dict = NULL;
233
234 if (id == NULL) return;
235
236 if (id->doc != NULL)
237 dict = id->doc->dict;
238
239 if (id->value != NULL)
240 DICT_FREE(id->value)
241 xmlFree(id);
242 }
243
244 /**
245 * xmlTextReaderRemoveID:
246 * @doc: the document
247 * @attr: the attribute
248 *
249 * Remove the given attribute from the ID table maintained internally.
250 *
251 * Returns -1 if the lookup failed and 0 otherwise
252 */
253 static int
xmlTextReaderRemoveID(xmlDocPtr doc,xmlAttrPtr attr)254 xmlTextReaderRemoveID(xmlDocPtr doc, xmlAttrPtr attr) {
255 xmlIDTablePtr table;
256 xmlIDPtr id;
257 xmlChar *ID;
258
259 if (doc == NULL) return(-1);
260 if (attr == NULL) return(-1);
261 table = (xmlIDTablePtr) doc->ids;
262 if (table == NULL)
263 return(-1);
264
265 ID = xmlNodeListGetString(doc, attr->children, 1);
266 if (ID == NULL)
267 return(-1);
268 id = xmlHashLookup(table, ID);
269 xmlFree(ID);
270 if (id == NULL || id->attr != attr) {
271 return(-1);
272 }
273 id->name = attr->name;
274 id->attr = NULL;
275 return(0);
276 }
277
278 /**
279 * xmlTextReaderFreeProp:
280 * @reader: the xmlTextReaderPtr used
281 * @cur: the node
282 *
283 * Free a node.
284 */
285 static void
xmlTextReaderFreeProp(xmlTextReaderPtr reader,xmlAttrPtr cur)286 xmlTextReaderFreeProp(xmlTextReaderPtr reader, xmlAttrPtr cur) {
287 xmlDictPtr dict;
288
289 if ((reader != NULL) && (reader->ctxt != NULL))
290 dict = reader->ctxt->dict;
291 else
292 dict = NULL;
293 if (cur == NULL) return;
294
295 if ((__xmlRegisterCallbacks) && (xmlDeregisterNodeDefaultValue))
296 xmlDeregisterNodeDefaultValue((xmlNodePtr) cur);
297
298 /* Check for ID removal -> leading to invalid references ! */
299 if ((cur->parent != NULL) && (cur->parent->doc != NULL) &&
300 ((cur->parent->doc->intSubset != NULL) ||
301 (cur->parent->doc->extSubset != NULL))) {
302 if (xmlIsID(cur->parent->doc, cur->parent, cur))
303 xmlTextReaderRemoveID(cur->parent->doc, cur);
304 }
305 if (cur->children != NULL)
306 xmlTextReaderFreeNodeList(reader, cur->children);
307
308 DICT_FREE(cur->name);
309 if ((reader != NULL) && (reader->ctxt != NULL) &&
310 (reader->ctxt->freeAttrsNr < 100)) {
311 cur->next = reader->ctxt->freeAttrs;
312 reader->ctxt->freeAttrs = cur;
313 reader->ctxt->freeAttrsNr++;
314 } else {
315 xmlFree(cur);
316 }
317 }
318
319 /**
320 * xmlTextReaderFreePropList:
321 * @reader: the xmlTextReaderPtr used
322 * @cur: the first property in the list
323 *
324 * Free a property and all its siblings, all the children are freed too.
325 */
326 static void
xmlTextReaderFreePropList(xmlTextReaderPtr reader,xmlAttrPtr cur)327 xmlTextReaderFreePropList(xmlTextReaderPtr reader, xmlAttrPtr cur) {
328 xmlAttrPtr next;
329
330 while (cur != NULL) {
331 next = cur->next;
332 xmlTextReaderFreeProp(reader, cur);
333 cur = next;
334 }
335 }
336
337 /**
338 * xmlTextReaderFreeNodeList:
339 * @reader: the xmlTextReaderPtr used
340 * @cur: the first node in the list
341 *
342 * Free a node and all its siblings, this is a recursive behaviour, all
343 * the children are freed too.
344 */
345 static void
xmlTextReaderFreeNodeList(xmlTextReaderPtr reader,xmlNodePtr cur)346 xmlTextReaderFreeNodeList(xmlTextReaderPtr reader, xmlNodePtr cur) {
347 xmlNodePtr next;
348 xmlDictPtr dict;
349
350 if ((reader != NULL) && (reader->ctxt != NULL))
351 dict = reader->ctxt->dict;
352 else
353 dict = NULL;
354 if (cur == NULL) return;
355 if (cur->type == XML_NAMESPACE_DECL) {
356 xmlFreeNsList((xmlNsPtr) cur);
357 return;
358 }
359 if ((cur->type == XML_DOCUMENT_NODE) ||
360 (cur->type == XML_HTML_DOCUMENT_NODE)) {
361 xmlFreeDoc((xmlDocPtr) cur);
362 return;
363 }
364 while (cur != NULL) {
365 next = cur->next;
366 /* unroll to speed up freeing the document */
367 if (cur->type != XML_DTD_NODE) {
368
369 if ((cur->children != NULL) &&
370 (cur->type != XML_ENTITY_REF_NODE)) {
371 if (cur->children->parent == cur)
372 xmlTextReaderFreeNodeList(reader, cur->children);
373 cur->children = NULL;
374 }
375
376 if ((__xmlRegisterCallbacks) && (xmlDeregisterNodeDefaultValue))
377 xmlDeregisterNodeDefaultValue(cur);
378
379 if (((cur->type == XML_ELEMENT_NODE) ||
380 (cur->type == XML_XINCLUDE_START) ||
381 (cur->type == XML_XINCLUDE_END)) &&
382 (cur->properties != NULL))
383 xmlTextReaderFreePropList(reader, cur->properties);
384 if ((cur->content != (xmlChar *) &(cur->properties)) &&
385 (cur->type != XML_ELEMENT_NODE) &&
386 (cur->type != XML_XINCLUDE_START) &&
387 (cur->type != XML_XINCLUDE_END) &&
388 (cur->type != XML_ENTITY_REF_NODE)) {
389 DICT_FREE(cur->content);
390 }
391 if (((cur->type == XML_ELEMENT_NODE) ||
392 (cur->type == XML_XINCLUDE_START) ||
393 (cur->type == XML_XINCLUDE_END)) &&
394 (cur->nsDef != NULL))
395 xmlFreeNsList(cur->nsDef);
396
397 /*
398 * we don't free element names here they are interned now
399 */
400 if ((cur->type != XML_TEXT_NODE) &&
401 (cur->type != XML_COMMENT_NODE))
402 DICT_FREE(cur->name);
403 if (((cur->type == XML_ELEMENT_NODE) ||
404 (cur->type == XML_TEXT_NODE)) &&
405 (reader != NULL) && (reader->ctxt != NULL) &&
406 (reader->ctxt->freeElemsNr < 100)) {
407 cur->next = reader->ctxt->freeElems;
408 reader->ctxt->freeElems = cur;
409 reader->ctxt->freeElemsNr++;
410 } else {
411 xmlFree(cur);
412 }
413 }
414 cur = next;
415 }
416 }
417
418 /**
419 * xmlTextReaderFreeNode:
420 * @reader: the xmlTextReaderPtr used
421 * @cur: the node
422 *
423 * Free a node, this is a recursive behaviour, all the children are freed too.
424 * This doesn't unlink the child from the list, use xmlUnlinkNode() first.
425 */
426 static void
xmlTextReaderFreeNode(xmlTextReaderPtr reader,xmlNodePtr cur)427 xmlTextReaderFreeNode(xmlTextReaderPtr reader, xmlNodePtr cur) {
428 xmlDictPtr dict;
429
430 if ((reader != NULL) && (reader->ctxt != NULL))
431 dict = reader->ctxt->dict;
432 else
433 dict = NULL;
434 if (cur->type == XML_DTD_NODE) {
435 xmlFreeDtd((xmlDtdPtr) cur);
436 return;
437 }
438 if (cur->type == XML_NAMESPACE_DECL) {
439 xmlFreeNs((xmlNsPtr) cur);
440 return;
441 }
442 if (cur->type == XML_ATTRIBUTE_NODE) {
443 xmlTextReaderFreeProp(reader, (xmlAttrPtr) cur);
444 return;
445 }
446
447 if ((cur->children != NULL) &&
448 (cur->type != XML_ENTITY_REF_NODE)) {
449 if (cur->children->parent == cur)
450 xmlTextReaderFreeNodeList(reader, cur->children);
451 cur->children = NULL;
452 }
453
454 if ((__xmlRegisterCallbacks) && (xmlDeregisterNodeDefaultValue))
455 xmlDeregisterNodeDefaultValue(cur);
456
457 if (((cur->type == XML_ELEMENT_NODE) ||
458 (cur->type == XML_XINCLUDE_START) ||
459 (cur->type == XML_XINCLUDE_END)) &&
460 (cur->properties != NULL))
461 xmlTextReaderFreePropList(reader, cur->properties);
462 if ((cur->content != (xmlChar *) &(cur->properties)) &&
463 (cur->type != XML_ELEMENT_NODE) &&
464 (cur->type != XML_XINCLUDE_START) &&
465 (cur->type != XML_XINCLUDE_END) &&
466 (cur->type != XML_ENTITY_REF_NODE)) {
467 DICT_FREE(cur->content);
468 }
469 if (((cur->type == XML_ELEMENT_NODE) ||
470 (cur->type == XML_XINCLUDE_START) ||
471 (cur->type == XML_XINCLUDE_END)) &&
472 (cur->nsDef != NULL))
473 xmlFreeNsList(cur->nsDef);
474
475 /*
476 * we don't free names here they are interned now
477 */
478 if ((cur->type != XML_TEXT_NODE) &&
479 (cur->type != XML_COMMENT_NODE))
480 DICT_FREE(cur->name);
481
482 if (((cur->type == XML_ELEMENT_NODE) ||
483 (cur->type == XML_TEXT_NODE)) &&
484 (reader != NULL) && (reader->ctxt != NULL) &&
485 (reader->ctxt->freeElemsNr < 100)) {
486 cur->next = reader->ctxt->freeElems;
487 reader->ctxt->freeElems = cur;
488 reader->ctxt->freeElemsNr++;
489 } else {
490 xmlFree(cur);
491 }
492 }
493
494 /**
495 * xmlTextReaderFreeIDTable:
496 * @table: An id table
497 *
498 * Deallocate the memory used by an ID hash table.
499 */
500 static void
xmlTextReaderFreeIDTable(xmlIDTablePtr table)501 xmlTextReaderFreeIDTable(xmlIDTablePtr table) {
502 xmlHashFree(table, (xmlHashDeallocator) xmlFreeID);
503 }
504
505 /**
506 * xmlTextReaderFreeDoc:
507 * @reader: the xmlTextReaderPtr used
508 * @cur: pointer to the document
509 *
510 * Free up all the structures used by a document, tree included.
511 */
512 static void
xmlTextReaderFreeDoc(xmlTextReaderPtr reader,xmlDocPtr cur)513 xmlTextReaderFreeDoc(xmlTextReaderPtr reader, xmlDocPtr cur) {
514 xmlDtdPtr extSubset, intSubset;
515
516 if (cur == NULL) return;
517
518 if ((__xmlRegisterCallbacks) && (xmlDeregisterNodeDefaultValue))
519 xmlDeregisterNodeDefaultValue((xmlNodePtr) cur);
520
521 /*
522 * Do this before freeing the children list to avoid ID lookups
523 */
524 if (cur->ids != NULL) xmlTextReaderFreeIDTable((xmlIDTablePtr) cur->ids);
525 cur->ids = NULL;
526 if (cur->refs != NULL) xmlFreeRefTable((xmlRefTablePtr) cur->refs);
527 cur->refs = NULL;
528 extSubset = cur->extSubset;
529 intSubset = cur->intSubset;
530 if (intSubset == extSubset)
531 extSubset = NULL;
532 if (extSubset != NULL) {
533 xmlUnlinkNode((xmlNodePtr) cur->extSubset);
534 cur->extSubset = NULL;
535 xmlFreeDtd(extSubset);
536 }
537 if (intSubset != NULL) {
538 xmlUnlinkNode((xmlNodePtr) cur->intSubset);
539 cur->intSubset = NULL;
540 xmlFreeDtd(intSubset);
541 }
542
543 if (cur->children != NULL) xmlTextReaderFreeNodeList(reader, cur->children);
544
545 if (cur->version != NULL) xmlFree((char *) cur->version);
546 if (cur->name != NULL) xmlFree((char *) cur->name);
547 if (cur->encoding != NULL) xmlFree((char *) cur->encoding);
548 if (cur->oldNs != NULL) xmlFreeNsList(cur->oldNs);
549 if (cur->URL != NULL) xmlFree((char *) cur->URL);
550 if (cur->dict != NULL) xmlDictFree(cur->dict);
551
552 xmlFree(cur);
553 }
554
555 /************************************************************************
556 * *
557 * The reader core parser *
558 * *
559 ************************************************************************/
560 #ifdef DEBUG_READER
561 static void
xmlTextReaderDebug(xmlTextReaderPtr reader)562 xmlTextReaderDebug(xmlTextReaderPtr reader) {
563 if ((reader == NULL) || (reader->ctxt == NULL)) {
564 fprintf(stderr, "xmlTextReader NULL\n");
565 return;
566 }
567 fprintf(stderr, "xmlTextReader: state %d depth %d ",
568 reader->state, reader->depth);
569 if (reader->node == NULL) {
570 fprintf(stderr, "node = NULL\n");
571 } else {
572 fprintf(stderr, "node %s\n", reader->node->name);
573 }
574 fprintf(stderr, " input: base %d, cur %d, depth %d: ",
575 reader->base, reader->cur, reader->ctxt->nodeNr);
576 if (reader->input->buffer == NULL) {
577 fprintf(stderr, "buffer is NULL\n");
578 } else {
579 #ifdef LIBXML_DEBUG_ENABLED
580 xmlDebugDumpString(stderr,
581 &reader->input->buffer->content[reader->cur]);
582 #endif
583 fprintf(stderr, "\n");
584 }
585 }
586 #endif
587
588 /**
589 * xmlTextReaderEntPush:
590 * @reader: the xmlTextReaderPtr used
591 * @value: the entity reference node
592 *
593 * Pushes a new entity reference node on top of the entities stack
594 *
595 * Returns 0 in case of error, the index in the stack otherwise
596 */
597 static int
xmlTextReaderEntPush(xmlTextReaderPtr reader,xmlNodePtr value)598 xmlTextReaderEntPush(xmlTextReaderPtr reader, xmlNodePtr value)
599 {
600 if (reader->entMax <= 0) {
601 reader->entMax = 10;
602 reader->entTab = (xmlNodePtr *) xmlMalloc(reader->entMax *
603 sizeof(reader->entTab[0]));
604 if (reader->entTab == NULL) {
605 xmlGenericError(xmlGenericErrorContext, "xmlMalloc failed !\n");
606 return (0);
607 }
608 }
609 if (reader->entNr >= reader->entMax) {
610 reader->entMax *= 2;
611 reader->entTab =
612 (xmlNodePtr *) xmlRealloc(reader->entTab,
613 reader->entMax *
614 sizeof(reader->entTab[0]));
615 if (reader->entTab == NULL) {
616 xmlGenericError(xmlGenericErrorContext, "xmlRealloc failed !\n");
617 return (0);
618 }
619 }
620 reader->entTab[reader->entNr] = value;
621 reader->ent = value;
622 return (reader->entNr++);
623 }
624
625 /**
626 * xmlTextReaderEntPop:
627 * @reader: the xmlTextReaderPtr used
628 *
629 * Pops the top element entity from the entities stack
630 *
631 * Returns the entity just removed
632 */
633 static xmlNodePtr
xmlTextReaderEntPop(xmlTextReaderPtr reader)634 xmlTextReaderEntPop(xmlTextReaderPtr reader)
635 {
636 xmlNodePtr ret;
637
638 if (reader->entNr <= 0)
639 return (NULL);
640 reader->entNr--;
641 if (reader->entNr > 0)
642 reader->ent = reader->entTab[reader->entNr - 1];
643 else
644 reader->ent = NULL;
645 ret = reader->entTab[reader->entNr];
646 reader->entTab[reader->entNr] = NULL;
647 return (ret);
648 }
649
650 /**
651 * xmlTextReaderStartElement:
652 * @ctx: the user data (XML parser context)
653 * @fullname: The element name, including namespace prefix
654 * @atts: An array of name/value attributes pairs, NULL terminated
655 *
656 * called when an opening tag has been processed.
657 */
658 static void
xmlTextReaderStartElement(void * ctx,const xmlChar * fullname,const xmlChar ** atts)659 xmlTextReaderStartElement(void *ctx, const xmlChar *fullname,
660 const xmlChar **atts) {
661 xmlParserCtxtPtr ctxt = (xmlParserCtxtPtr) ctx;
662 xmlTextReaderPtr reader = ctxt->_private;
663
664 #ifdef DEBUG_CALLBACKS
665 printf("xmlTextReaderStartElement(%s)\n", fullname);
666 #endif
667 if ((reader != NULL) && (reader->startElement != NULL)) {
668 reader->startElement(ctx, fullname, atts);
669 if ((ctxt->node != NULL) && (ctxt->input != NULL) &&
670 (ctxt->input->cur != NULL) && (ctxt->input->cur[0] == '/') &&
671 (ctxt->input->cur[1] == '>'))
672 ctxt->node->extra = NODE_IS_EMPTY;
673 }
674 if (reader != NULL)
675 reader->state = XML_TEXTREADER_ELEMENT;
676 }
677
678 /**
679 * xmlTextReaderEndElement:
680 * @ctx: the user data (XML parser context)
681 * @fullname: The element name, including namespace prefix
682 *
683 * called when an ending tag has been processed.
684 */
685 static void
xmlTextReaderEndElement(void * ctx,const xmlChar * fullname)686 xmlTextReaderEndElement(void *ctx, const xmlChar *fullname) {
687 xmlParserCtxtPtr ctxt = (xmlParserCtxtPtr) ctx;
688 xmlTextReaderPtr reader = ctxt->_private;
689
690 #ifdef DEBUG_CALLBACKS
691 printf("xmlTextReaderEndElement(%s)\n", fullname);
692 #endif
693 if ((reader != NULL) && (reader->endElement != NULL)) {
694 reader->endElement(ctx, fullname);
695 }
696 }
697
698 /**
699 * xmlTextReaderStartElementNs:
700 * @ctx: the user data (XML parser context)
701 * @localname: the local name of the element
702 * @prefix: the element namespace prefix if available
703 * @URI: the element namespace name if available
704 * @nb_namespaces: number of namespace definitions on that node
705 * @namespaces: pointer to the array of prefix/URI pairs namespace definitions
706 * @nb_attributes: the number of attributes on that node
707 * nb_defaulted: the number of defaulted attributes.
708 * @attributes: pointer to the array of (localname/prefix/URI/value/end)
709 * attribute values.
710 *
711 * called when an opening tag has been processed.
712 */
713 static void
xmlTextReaderStartElementNs(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)714 xmlTextReaderStartElementNs(void *ctx,
715 const xmlChar *localname,
716 const xmlChar *prefix,
717 const xmlChar *URI,
718 int nb_namespaces,
719 const xmlChar **namespaces,
720 int nb_attributes,
721 int nb_defaulted,
722 const xmlChar **attributes)
723 {
724 xmlParserCtxtPtr ctxt = (xmlParserCtxtPtr) ctx;
725 xmlTextReaderPtr reader = ctxt->_private;
726
727 #ifdef DEBUG_CALLBACKS
728 printf("xmlTextReaderStartElementNs(%s)\n", localname);
729 #endif
730 if ((reader != NULL) && (reader->startElementNs != NULL)) {
731 reader->startElementNs(ctx, localname, prefix, URI, nb_namespaces,
732 namespaces, nb_attributes, nb_defaulted,
733 attributes);
734 if ((ctxt->node != NULL) && (ctxt->input != NULL) &&
735 (ctxt->input->cur != NULL) && (ctxt->input->cur[0] == '/') &&
736 (ctxt->input->cur[1] == '>'))
737 ctxt->node->extra = NODE_IS_EMPTY;
738 }
739 if (reader != NULL)
740 reader->state = XML_TEXTREADER_ELEMENT;
741 }
742
743 /**
744 * xmlTextReaderEndElementNs:
745 * @ctx: the user data (XML parser context)
746 * @localname: the local name of the element
747 * @prefix: the element namespace prefix if available
748 * @URI: the element namespace name if available
749 *
750 * called when an ending tag has been processed.
751 */
752 static void
xmlTextReaderEndElementNs(void * ctx,const xmlChar * localname,const xmlChar * prefix,const xmlChar * URI)753 xmlTextReaderEndElementNs(void *ctx,
754 const xmlChar * localname,
755 const xmlChar * prefix,
756 const xmlChar * URI)
757 {
758 xmlParserCtxtPtr ctxt = (xmlParserCtxtPtr) ctx;
759 xmlTextReaderPtr reader = ctxt->_private;
760
761 #ifdef DEBUG_CALLBACKS
762 printf("xmlTextReaderEndElementNs(%s)\n", localname);
763 #endif
764 if ((reader != NULL) && (reader->endElementNs != NULL)) {
765 reader->endElementNs(ctx, localname, prefix, URI);
766 }
767 }
768
769
770 /**
771 * xmlTextReaderCharacters:
772 * @ctx: the user data (XML parser context)
773 * @ch: a xmlChar string
774 * @len: the number of xmlChar
775 *
776 * receiving some chars from the parser.
777 */
778 static void
xmlTextReaderCharacters(void * ctx,const xmlChar * ch,int len)779 xmlTextReaderCharacters(void *ctx, const xmlChar *ch, int len)
780 {
781 xmlParserCtxtPtr ctxt = (xmlParserCtxtPtr) ctx;
782 xmlTextReaderPtr reader = ctxt->_private;
783
784 #ifdef DEBUG_CALLBACKS
785 printf("xmlTextReaderCharacters()\n");
786 #endif
787 if ((reader != NULL) && (reader->characters != NULL)) {
788 reader->characters(ctx, ch, len);
789 }
790 }
791
792 /**
793 * xmlTextReaderCDataBlock:
794 * @ctx: the user data (XML parser context)
795 * @value: The pcdata content
796 * @len: the block length
797 *
798 * called when a pcdata block has been parsed
799 */
800 static void
xmlTextReaderCDataBlock(void * ctx,const xmlChar * ch,int len)801 xmlTextReaderCDataBlock(void *ctx, const xmlChar *ch, int len)
802 {
803 xmlParserCtxtPtr ctxt = (xmlParserCtxtPtr) ctx;
804 xmlTextReaderPtr reader = ctxt->_private;
805
806 #ifdef DEBUG_CALLBACKS
807 printf("xmlTextReaderCDataBlock()\n");
808 #endif
809 if ((reader != NULL) && (reader->cdataBlock != NULL)) {
810 reader->cdataBlock(ctx, ch, len);
811 }
812 }
813
814 /**
815 * xmlTextReaderPushData:
816 * @reader: the xmlTextReaderPtr used
817 *
818 * Push data down the progressive parser until a significant callback
819 * got raised.
820 *
821 * Returns -1 in case of failure, 0 otherwise
822 */
823 static int
xmlTextReaderPushData(xmlTextReaderPtr reader)824 xmlTextReaderPushData(xmlTextReaderPtr reader) {
825 xmlBufPtr inbuf;
826 int val, s;
827 xmlTextReaderState oldstate;
828 int alloc;
829
830 if ((reader->input == NULL) || (reader->input->buffer == NULL))
831 return(-1);
832
833 oldstate = reader->state;
834 reader->state = XML_TEXTREADER_NONE;
835 inbuf = reader->input->buffer;
836 alloc = xmlBufGetAllocationScheme(inbuf);
837
838 while (reader->state == XML_TEXTREADER_NONE) {
839 if (xmlBufUse(inbuf) < reader->cur + CHUNK_SIZE) {
840 /*
841 * Refill the buffer unless we are at the end of the stream
842 */
843 if (reader->mode != XML_TEXTREADER_MODE_EOF) {
844 val = xmlParserInputBufferRead(reader->input, 4096);
845 if ((val == 0) &&
846 (alloc == XML_BUFFER_ALLOC_IMMUTABLE)) {
847 if (xmlBufUse(inbuf) == reader->cur) {
848 reader->mode = XML_TEXTREADER_MODE_EOF;
849 reader->state = oldstate;
850 }
851 } else if (val < 0) {
852 reader->mode = XML_TEXTREADER_MODE_EOF;
853 reader->state = oldstate;
854 if ((oldstate != XML_TEXTREADER_START) ||
855 (reader->ctxt->myDoc != NULL))
856 return(val);
857 } else if (val == 0) {
858 /* mark the end of the stream and process the remains */
859 reader->mode = XML_TEXTREADER_MODE_EOF;
860 break;
861 }
862
863 } else
864 break;
865 }
866 /*
867 * parse by block of CHUNK_SIZE bytes, various tests show that
868 * it's the best tradeoff at least on a 1.2GH Duron
869 */
870 if (xmlBufUse(inbuf) >= reader->cur + CHUNK_SIZE) {
871 val = xmlParseChunk(reader->ctxt,
872 (const char *) xmlBufContent(inbuf) + reader->cur,
873 CHUNK_SIZE, 0);
874 reader->cur += CHUNK_SIZE;
875 if (val != 0)
876 reader->ctxt->wellFormed = 0;
877 if (reader->ctxt->wellFormed == 0)
878 break;
879 } else {
880 s = xmlBufUse(inbuf) - reader->cur;
881 val = xmlParseChunk(reader->ctxt,
882 (const char *) xmlBufContent(inbuf) + reader->cur,
883 s, 0);
884 reader->cur += s;
885 if (val != 0)
886 reader->ctxt->wellFormed = 0;
887 break;
888 }
889 }
890
891 /*
892 * Discard the consumed input when needed and possible
893 */
894 if (reader->mode == XML_TEXTREADER_MODE_INTERACTIVE) {
895 if (alloc != XML_BUFFER_ALLOC_IMMUTABLE) {
896 if ((reader->cur >= 4096) &&
897 (xmlBufUse(inbuf) - reader->cur <= CHUNK_SIZE)) {
898 val = xmlBufShrink(inbuf, reader->cur);
899 if (val >= 0) {
900 reader->cur -= val;
901 }
902 }
903 }
904 }
905
906 /*
907 * At the end of the stream signal that the work is done to the Push
908 * parser.
909 */
910 else if (reader->mode == XML_TEXTREADER_MODE_EOF) {
911 if (reader->state != XML_TEXTREADER_DONE) {
912 s = xmlBufUse(inbuf) - reader->cur;
913 val = xmlParseChunk(reader->ctxt,
914 (const char *) xmlBufContent(inbuf) + reader->cur,
915 s, 1);
916 reader->cur = xmlBufUse(inbuf);
917 reader->state = XML_TEXTREADER_DONE;
918 if (val != 0) {
919 if (reader->ctxt->wellFormed)
920 reader->ctxt->wellFormed = 0;
921 else
922 return(-1);
923 }
924 }
925 }
926 reader->state = oldstate;
927 if (reader->ctxt->wellFormed == 0) {
928 reader->mode = XML_TEXTREADER_MODE_EOF;
929 return(-1);
930 }
931
932 return(0);
933 }
934
935 #ifdef LIBXML_REGEXP_ENABLED
936 /**
937 * xmlTextReaderValidatePush:
938 * @reader: the xmlTextReaderPtr used
939 *
940 * Push the current node for validation
941 */
942 static void
xmlTextReaderValidatePush(xmlTextReaderPtr reader ATTRIBUTE_UNUSED)943 xmlTextReaderValidatePush(xmlTextReaderPtr reader ATTRIBUTE_UNUSED) {
944 xmlNodePtr node = reader->node;
945
946 #ifdef LIBXML_VALID_ENABLED
947 if ((reader->validate == XML_TEXTREADER_VALIDATE_DTD) &&
948 (reader->ctxt != NULL) && (reader->ctxt->validate == 1)) {
949 if ((node->ns == NULL) || (node->ns->prefix == NULL)) {
950 reader->ctxt->valid &= xmlValidatePushElement(&reader->ctxt->vctxt,
951 reader->ctxt->myDoc, node, node->name);
952 } else {
953 /* TODO use the BuildQName interface */
954 xmlChar *qname;
955
956 qname = xmlStrdup(node->ns->prefix);
957 qname = xmlStrcat(qname, BAD_CAST ":");
958 qname = xmlStrcat(qname, node->name);
959 reader->ctxt->valid &= xmlValidatePushElement(&reader->ctxt->vctxt,
960 reader->ctxt->myDoc, node, qname);
961 if (qname != NULL)
962 xmlFree(qname);
963 }
964 }
965 #endif /* LIBXML_VALID_ENABLED */
966 #ifdef LIBXML_SCHEMAS_ENABLED
967 if ((reader->validate == XML_TEXTREADER_VALIDATE_RNG) &&
968 (reader->rngValidCtxt != NULL)) {
969 int ret;
970
971 if (reader->rngFullNode != NULL) return;
972 ret = xmlRelaxNGValidatePushElement(reader->rngValidCtxt,
973 reader->ctxt->myDoc,
974 node);
975 if (ret == 0) {
976 /*
977 * this element requires a full tree
978 */
979 node = xmlTextReaderExpand(reader);
980 if (node == NULL) {
981 printf("Expand failed !\n");
982 ret = -1;
983 } else {
984 ret = xmlRelaxNGValidateFullElement(reader->rngValidCtxt,
985 reader->ctxt->myDoc,
986 node);
987 reader->rngFullNode = node;
988 }
989 }
990 if (ret != 1)
991 reader->rngValidErrors++;
992 }
993 #endif
994 }
995
996 /**
997 * xmlTextReaderValidateCData:
998 * @reader: the xmlTextReaderPtr used
999 * @data: pointer to the CData
1000 * @len: length of the CData block in bytes.
1001 *
1002 * Push some CData for validation
1003 */
1004 static void
xmlTextReaderValidateCData(xmlTextReaderPtr reader,const xmlChar * data,int len)1005 xmlTextReaderValidateCData(xmlTextReaderPtr reader,
1006 const xmlChar *data, int len) {
1007 #ifdef LIBXML_VALID_ENABLED
1008 if ((reader->validate == XML_TEXTREADER_VALIDATE_DTD) &&
1009 (reader->ctxt != NULL) && (reader->ctxt->validate == 1)) {
1010 reader->ctxt->valid &= xmlValidatePushCData(&reader->ctxt->vctxt,
1011 data, len);
1012 }
1013 #endif /* LIBXML_VALID_ENABLED */
1014 #ifdef LIBXML_SCHEMAS_ENABLED
1015 if ((reader->validate == XML_TEXTREADER_VALIDATE_RNG) &&
1016 (reader->rngValidCtxt != NULL)) {
1017 int ret;
1018
1019 if (reader->rngFullNode != NULL) return;
1020 ret = xmlRelaxNGValidatePushCData(reader->rngValidCtxt, data, len);
1021 if (ret != 1)
1022 reader->rngValidErrors++;
1023 }
1024 #endif
1025 }
1026
1027 /**
1028 * xmlTextReaderValidatePop:
1029 * @reader: the xmlTextReaderPtr used
1030 *
1031 * Pop the current node from validation
1032 */
1033 static void
xmlTextReaderValidatePop(xmlTextReaderPtr reader)1034 xmlTextReaderValidatePop(xmlTextReaderPtr reader) {
1035 xmlNodePtr node = reader->node;
1036
1037 #ifdef LIBXML_VALID_ENABLED
1038 if ((reader->validate == XML_TEXTREADER_VALIDATE_DTD) &&
1039 (reader->ctxt != NULL) && (reader->ctxt->validate == 1)) {
1040 if ((node->ns == NULL) || (node->ns->prefix == NULL)) {
1041 reader->ctxt->valid &= xmlValidatePopElement(&reader->ctxt->vctxt,
1042 reader->ctxt->myDoc, node, node->name);
1043 } else {
1044 /* TODO use the BuildQName interface */
1045 xmlChar *qname;
1046
1047 qname = xmlStrdup(node->ns->prefix);
1048 qname = xmlStrcat(qname, BAD_CAST ":");
1049 qname = xmlStrcat(qname, node->name);
1050 reader->ctxt->valid &= xmlValidatePopElement(&reader->ctxt->vctxt,
1051 reader->ctxt->myDoc, node, qname);
1052 if (qname != NULL)
1053 xmlFree(qname);
1054 }
1055 }
1056 #endif /* LIBXML_VALID_ENABLED */
1057 #ifdef LIBXML_SCHEMAS_ENABLED
1058 if ((reader->validate == XML_TEXTREADER_VALIDATE_RNG) &&
1059 (reader->rngValidCtxt != NULL)) {
1060 int ret;
1061
1062 if (reader->rngFullNode != NULL) {
1063 if (node == reader->rngFullNode)
1064 reader->rngFullNode = NULL;
1065 return;
1066 }
1067 ret = xmlRelaxNGValidatePopElement(reader->rngValidCtxt,
1068 reader->ctxt->myDoc,
1069 node);
1070 if (ret != 1)
1071 reader->rngValidErrors++;
1072 }
1073 #endif
1074 }
1075
1076 /**
1077 * xmlTextReaderValidateEntity:
1078 * @reader: the xmlTextReaderPtr used
1079 *
1080 * Handle the validation when an entity reference is encountered and
1081 * entity substitution is not activated. As a result the parser interface
1082 * must walk through the entity and do the validation calls
1083 */
1084 static void
xmlTextReaderValidateEntity(xmlTextReaderPtr reader)1085 xmlTextReaderValidateEntity(xmlTextReaderPtr reader) {
1086 xmlNodePtr oldnode = reader->node;
1087 xmlNodePtr node = reader->node;
1088 xmlParserCtxtPtr ctxt = reader->ctxt;
1089
1090 do {
1091 if (node->type == XML_ENTITY_REF_NODE) {
1092 /*
1093 * Case where the underlying tree is not availble, lookup the entity
1094 * and walk it.
1095 */
1096 if ((node->children == NULL) && (ctxt->sax != NULL) &&
1097 (ctxt->sax->getEntity != NULL)) {
1098 node->children = (xmlNodePtr)
1099 ctxt->sax->getEntity(ctxt, node->name);
1100 }
1101
1102 if ((node->children != NULL) &&
1103 (node->children->type == XML_ENTITY_DECL) &&
1104 (node->children->children != NULL)) {
1105 xmlTextReaderEntPush(reader, node);
1106 node = node->children->children;
1107 continue;
1108 } else {
1109 /*
1110 * The error has probably be raised already.
1111 */
1112 if (node == oldnode)
1113 break;
1114 node = node->next;
1115 }
1116 #ifdef LIBXML_REGEXP_ENABLED
1117 } else if (node->type == XML_ELEMENT_NODE) {
1118 reader->node = node;
1119 xmlTextReaderValidatePush(reader);
1120 } else if ((node->type == XML_TEXT_NODE) ||
1121 (node->type == XML_CDATA_SECTION_NODE)) {
1122 xmlTextReaderValidateCData(reader, node->content,
1123 xmlStrlen(node->content));
1124 #endif
1125 }
1126
1127 /*
1128 * go to next node
1129 */
1130 if (node->children != NULL) {
1131 node = node->children;
1132 continue;
1133 } else if (node->type == XML_ELEMENT_NODE) {
1134 xmlTextReaderValidatePop(reader);
1135 }
1136 if (node->next != NULL) {
1137 node = node->next;
1138 continue;
1139 }
1140 do {
1141 node = node->parent;
1142 if (node->type == XML_ELEMENT_NODE) {
1143 xmlNodePtr tmp;
1144 if (reader->entNr == 0) {
1145 while ((tmp = node->last) != NULL) {
1146 if ((tmp->extra & NODE_IS_PRESERVED) == 0) {
1147 xmlUnlinkNode(tmp);
1148 xmlTextReaderFreeNode(reader, tmp);
1149 } else
1150 break;
1151 }
1152 }
1153 reader->node = node;
1154 xmlTextReaderValidatePop(reader);
1155 }
1156 if ((node->type == XML_ENTITY_DECL) &&
1157 (reader->ent != NULL) && (reader->ent->children == node)) {
1158 node = xmlTextReaderEntPop(reader);
1159 }
1160 if (node == oldnode)
1161 break;
1162 if (node->next != NULL) {
1163 node = node->next;
1164 break;
1165 }
1166 } while ((node != NULL) && (node != oldnode));
1167 } while ((node != NULL) && (node != oldnode));
1168 reader->node = oldnode;
1169 }
1170 #endif /* LIBXML_REGEXP_ENABLED */
1171
1172
1173 /**
1174 * xmlTextReaderGetSuccessor:
1175 * @cur: the current node
1176 *
1177 * Get the successor of a node if available.
1178 *
1179 * Returns the successor node or NULL
1180 */
1181 static xmlNodePtr
xmlTextReaderGetSuccessor(xmlNodePtr cur)1182 xmlTextReaderGetSuccessor(xmlNodePtr cur) {
1183 if (cur == NULL) return(NULL) ; /* ERROR */
1184 if (cur->next != NULL) return(cur->next) ;
1185 do {
1186 cur = cur->parent;
1187 if (cur == NULL) break;
1188 if (cur->next != NULL) return(cur->next);
1189 } while (cur != NULL);
1190 return(cur);
1191 }
1192
1193 /**
1194 * xmlTextReaderDoExpand:
1195 * @reader: the xmlTextReaderPtr used
1196 *
1197 * Makes sure that the current node is fully read as well as all its
1198 * descendant. It means the full DOM subtree must be available at the
1199 * end of the call.
1200 *
1201 * Returns 1 if the node was expanded successfully, 0 if there is no more
1202 * nodes to read, or -1 in case of error
1203 */
1204 static int
xmlTextReaderDoExpand(xmlTextReaderPtr reader)1205 xmlTextReaderDoExpand(xmlTextReaderPtr reader) {
1206 int val;
1207
1208 if ((reader == NULL) || (reader->node == NULL) || (reader->ctxt == NULL))
1209 return(-1);
1210 do {
1211 if (reader->ctxt->instate == XML_PARSER_EOF) return(1);
1212
1213 if (xmlTextReaderGetSuccessor(reader->node) != NULL)
1214 return(1);
1215 if (reader->ctxt->nodeNr < reader->depth)
1216 return(1);
1217 if (reader->mode == XML_TEXTREADER_MODE_EOF)
1218 return(1);
1219 val = xmlTextReaderPushData(reader);
1220 if (val < 0){
1221 reader->mode = XML_TEXTREADER_MODE_ERROR;
1222 return(-1);
1223 }
1224 } while(reader->mode != XML_TEXTREADER_MODE_EOF);
1225 return(1);
1226 }
1227
1228 /**
1229 * xmlTextReaderCollectSiblings:
1230 * @node: the first child
1231 *
1232 * Traverse depth-first through all sibling nodes and their children
1233 * nodes and concatenate their content. This is an auxiliary function
1234 * to xmlTextReaderReadString.
1235 *
1236 * Returns a string containing the content, or NULL in case of error.
1237 */
1238 static xmlChar *
xmlTextReaderCollectSiblings(xmlNodePtr node)1239 xmlTextReaderCollectSiblings(xmlNodePtr node)
1240 {
1241 xmlBufferPtr buffer;
1242 xmlChar *ret;
1243
1244 if ((node == NULL) || (node->type == XML_NAMESPACE_DECL))
1245 return(NULL);
1246
1247 buffer = xmlBufferCreate();
1248 if (buffer == NULL)
1249 return NULL;
1250
1251 for ( ; node != NULL; node = node->next) {
1252 switch (node->type) {
1253 case XML_TEXT_NODE:
1254 case XML_CDATA_SECTION_NODE:
1255 xmlBufferCat(buffer, node->content);
1256 break;
1257 case XML_ELEMENT_NODE: {
1258 xmlChar *tmp;
1259
1260 tmp = xmlTextReaderCollectSiblings(node->children);
1261 xmlBufferCat(buffer, tmp);
1262 xmlFree(tmp);
1263 break;
1264 }
1265 default:
1266 break;
1267 }
1268 }
1269 ret = buffer->content;
1270 buffer->content = NULL;
1271 xmlBufferFree(buffer);
1272 return(ret);
1273 }
1274
1275 /**
1276 * xmlTextReaderRead:
1277 * @reader: the xmlTextReaderPtr used
1278 *
1279 * Moves the position of the current instance to the next node in
1280 * the stream, exposing its properties.
1281 *
1282 * Returns 1 if the node was read successfully, 0 if there is no more
1283 * nodes to read, or -1 in case of error
1284 */
1285 int
xmlTextReaderRead(xmlTextReaderPtr reader)1286 xmlTextReaderRead(xmlTextReaderPtr reader) {
1287 int val, olddepth = 0;
1288 xmlTextReaderState oldstate = XML_TEXTREADER_START;
1289 xmlNodePtr oldnode = NULL;
1290
1291
1292 if (reader == NULL)
1293 return(-1);
1294 reader->curnode = NULL;
1295 if (reader->doc != NULL)
1296 return(xmlTextReaderReadTree(reader));
1297 if (reader->ctxt == NULL)
1298 return(-1);
1299
1300 #ifdef DEBUG_READER
1301 fprintf(stderr, "\nREAD ");
1302 DUMP_READER
1303 #endif
1304 if (reader->mode == XML_TEXTREADER_MODE_INITIAL) {
1305 reader->mode = XML_TEXTREADER_MODE_INTERACTIVE;
1306 /*
1307 * Initial state
1308 */
1309 do {
1310 val = xmlTextReaderPushData(reader);
1311 if (val < 0){
1312 reader->mode = XML_TEXTREADER_MODE_ERROR;
1313 reader->state = XML_TEXTREADER_ERROR;
1314 return(-1);
1315 }
1316 } while ((reader->ctxt->node == NULL) &&
1317 ((reader->mode != XML_TEXTREADER_MODE_EOF) &&
1318 (reader->state != XML_TEXTREADER_DONE)));
1319 if (reader->ctxt->node == NULL) {
1320 if (reader->ctxt->myDoc != NULL) {
1321 reader->node = reader->ctxt->myDoc->children;
1322 }
1323 if (reader->node == NULL){
1324 reader->mode = XML_TEXTREADER_MODE_ERROR;
1325 reader->state = XML_TEXTREADER_ERROR;
1326 return(-1);
1327 }
1328 reader->state = XML_TEXTREADER_ELEMENT;
1329 } else {
1330 if (reader->ctxt->myDoc != NULL) {
1331 reader->node = reader->ctxt->myDoc->children;
1332 }
1333 if (reader->node == NULL)
1334 reader->node = reader->ctxt->nodeTab[0];
1335 reader->state = XML_TEXTREADER_ELEMENT;
1336 }
1337 reader->depth = 0;
1338 reader->ctxt->parseMode = XML_PARSE_READER;
1339 goto node_found;
1340 }
1341 oldstate = reader->state;
1342 olddepth = reader->ctxt->nodeNr;
1343 oldnode = reader->node;
1344
1345 get_next_node:
1346 if (reader->node == NULL) {
1347 if (reader->mode == XML_TEXTREADER_MODE_EOF)
1348 return(0);
1349 else
1350 return(-1);
1351 }
1352
1353 /*
1354 * If we are not backtracking on ancestors or examined nodes,
1355 * that the parser didn't finished or that we arent at the end
1356 * of stream, continue processing.
1357 */
1358 while ((reader->node != NULL) && (reader->node->next == NULL) &&
1359 (reader->ctxt->nodeNr == olddepth) &&
1360 ((oldstate == XML_TEXTREADER_BACKTRACK) ||
1361 (reader->node->children == NULL) ||
1362 (reader->node->type == XML_ENTITY_REF_NODE) ||
1363 ((reader->node->children != NULL) &&
1364 (reader->node->children->type == XML_TEXT_NODE) &&
1365 (reader->node->children->next == NULL)) ||
1366 (reader->node->type == XML_DTD_NODE) ||
1367 (reader->node->type == XML_DOCUMENT_NODE) ||
1368 (reader->node->type == XML_HTML_DOCUMENT_NODE)) &&
1369 ((reader->ctxt->node == NULL) ||
1370 (reader->ctxt->node == reader->node) ||
1371 (reader->ctxt->node == reader->node->parent)) &&
1372 (reader->ctxt->instate != XML_PARSER_EOF)) {
1373 val = xmlTextReaderPushData(reader);
1374 if (val < 0){
1375 reader->mode = XML_TEXTREADER_MODE_ERROR;
1376 reader->state = XML_TEXTREADER_ERROR;
1377 return(-1);
1378 }
1379 if (reader->node == NULL)
1380 goto node_end;
1381 }
1382 if (oldstate != XML_TEXTREADER_BACKTRACK) {
1383 if ((reader->node->children != NULL) &&
1384 (reader->node->type != XML_ENTITY_REF_NODE) &&
1385 (reader->node->type != XML_XINCLUDE_START) &&
1386 (reader->node->type != XML_DTD_NODE)) {
1387 reader->node = reader->node->children;
1388 reader->depth++;
1389 reader->state = XML_TEXTREADER_ELEMENT;
1390 goto node_found;
1391 }
1392 }
1393 if (reader->node->next != NULL) {
1394 if ((oldstate == XML_TEXTREADER_ELEMENT) &&
1395 (reader->node->type == XML_ELEMENT_NODE) &&
1396 (reader->node->children == NULL) &&
1397 ((reader->node->extra & NODE_IS_EMPTY) == 0)
1398 #ifdef LIBXML_XINCLUDE_ENABLED
1399 && (reader->in_xinclude <= 0)
1400 #endif
1401 ) {
1402 reader->state = XML_TEXTREADER_END;
1403 goto node_found;
1404 }
1405 #ifdef LIBXML_REGEXP_ENABLED
1406 if ((reader->validate) &&
1407 (reader->node->type == XML_ELEMENT_NODE))
1408 xmlTextReaderValidatePop(reader);
1409 #endif /* LIBXML_REGEXP_ENABLED */
1410 if ((reader->preserves > 0) &&
1411 (reader->node->extra & NODE_IS_SPRESERVED))
1412 reader->preserves--;
1413 reader->node = reader->node->next;
1414 reader->state = XML_TEXTREADER_ELEMENT;
1415
1416 /*
1417 * Cleanup of the old node
1418 */
1419 if ((reader->preserves == 0) &&
1420 #ifdef LIBXML_XINCLUDE_ENABLED
1421 (reader->in_xinclude == 0) &&
1422 #endif
1423 (reader->entNr == 0) &&
1424 (reader->node->prev != NULL) &&
1425 (reader->node->prev->type != XML_DTD_NODE)) {
1426 xmlNodePtr tmp = reader->node->prev;
1427 if ((tmp->extra & NODE_IS_PRESERVED) == 0) {
1428 xmlUnlinkNode(tmp);
1429 xmlTextReaderFreeNode(reader, tmp);
1430 }
1431 }
1432
1433 goto node_found;
1434 }
1435 if ((oldstate == XML_TEXTREADER_ELEMENT) &&
1436 (reader->node->type == XML_ELEMENT_NODE) &&
1437 (reader->node->children == NULL) &&
1438 ((reader->node->extra & NODE_IS_EMPTY) == 0)) {;
1439 reader->state = XML_TEXTREADER_END;
1440 goto node_found;
1441 }
1442 #ifdef LIBXML_REGEXP_ENABLED
1443 if ((reader->validate != XML_TEXTREADER_NOT_VALIDATE) && (reader->node->type == XML_ELEMENT_NODE))
1444 xmlTextReaderValidatePop(reader);
1445 #endif /* LIBXML_REGEXP_ENABLED */
1446 if ((reader->preserves > 0) &&
1447 (reader->node->extra & NODE_IS_SPRESERVED))
1448 reader->preserves--;
1449 reader->node = reader->node->parent;
1450 if ((reader->node == NULL) ||
1451 (reader->node->type == XML_DOCUMENT_NODE) ||
1452 #ifdef LIBXML_DOCB_ENABLED
1453 (reader->node->type == XML_DOCB_DOCUMENT_NODE) ||
1454 #endif
1455 (reader->node->type == XML_HTML_DOCUMENT_NODE)) {
1456 if (reader->mode != XML_TEXTREADER_MODE_EOF) {
1457 val = xmlParseChunk(reader->ctxt, "", 0, 1);
1458 reader->state = XML_TEXTREADER_DONE;
1459 if (val != 0)
1460 return(-1);
1461 }
1462 reader->node = NULL;
1463 reader->depth = -1;
1464
1465 /*
1466 * Cleanup of the old node
1467 */
1468 if ((oldnode != NULL) && (reader->preserves == 0) &&
1469 #ifdef LIBXML_XINCLUDE_ENABLED
1470 (reader->in_xinclude == 0) &&
1471 #endif
1472 (reader->entNr == 0) &&
1473 (oldnode->type != XML_DTD_NODE) &&
1474 ((oldnode->extra & NODE_IS_PRESERVED) == 0)) {
1475 xmlUnlinkNode(oldnode);
1476 xmlTextReaderFreeNode(reader, oldnode);
1477 }
1478
1479 goto node_end;
1480 }
1481 if ((reader->preserves == 0) &&
1482 #ifdef LIBXML_XINCLUDE_ENABLED
1483 (reader->in_xinclude == 0) &&
1484 #endif
1485 (reader->entNr == 0) &&
1486 (reader->node->last != NULL) &&
1487 ((reader->node->last->extra & NODE_IS_PRESERVED) == 0)) {
1488 xmlNodePtr tmp = reader->node->last;
1489 xmlUnlinkNode(tmp);
1490 xmlTextReaderFreeNode(reader, tmp);
1491 }
1492 reader->depth--;
1493 reader->state = XML_TEXTREADER_BACKTRACK;
1494
1495 node_found:
1496 DUMP_READER
1497
1498 /*
1499 * If we are in the middle of a piece of CDATA make sure it's finished
1500 */
1501 if ((reader->node != NULL) &&
1502 (reader->node->next == NULL) &&
1503 ((reader->node->type == XML_TEXT_NODE) ||
1504 (reader->node->type == XML_CDATA_SECTION_NODE))) {
1505 if (xmlTextReaderExpand(reader) == NULL)
1506 return -1;
1507 }
1508
1509 #ifdef LIBXML_XINCLUDE_ENABLED
1510 /*
1511 * Handle XInclude if asked for
1512 */
1513 if ((reader->xinclude) && (reader->node != NULL) &&
1514 (reader->node->type == XML_ELEMENT_NODE) &&
1515 (reader->node->ns != NULL) &&
1516 ((xmlStrEqual(reader->node->ns->href, XINCLUDE_NS)) ||
1517 (xmlStrEqual(reader->node->ns->href, XINCLUDE_OLD_NS)))) {
1518 if (reader->xincctxt == NULL) {
1519 reader->xincctxt = xmlXIncludeNewContext(reader->ctxt->myDoc);
1520 xmlXIncludeSetFlags(reader->xincctxt,
1521 reader->parserFlags & (~XML_PARSE_NOXINCNODE));
1522 }
1523 /*
1524 * expand that node and process it
1525 */
1526 if (xmlTextReaderExpand(reader) == NULL)
1527 return -1;
1528 xmlXIncludeProcessNode(reader->xincctxt, reader->node);
1529 }
1530 if ((reader->node != NULL) && (reader->node->type == XML_XINCLUDE_START)) {
1531 reader->in_xinclude++;
1532 goto get_next_node;
1533 }
1534 if ((reader->node != NULL) && (reader->node->type == XML_XINCLUDE_END)) {
1535 reader->in_xinclude--;
1536 goto get_next_node;
1537 }
1538 #endif
1539 /*
1540 * Handle entities enter and exit when in entity replacement mode
1541 */
1542 if ((reader->node != NULL) &&
1543 (reader->node->type == XML_ENTITY_REF_NODE) &&
1544 (reader->ctxt != NULL) && (reader->ctxt->replaceEntities == 1)) {
1545 /*
1546 * Case where the underlying tree is not availble, lookup the entity
1547 * and walk it.
1548 */
1549 if ((reader->node->children == NULL) && (reader->ctxt->sax != NULL) &&
1550 (reader->ctxt->sax->getEntity != NULL)) {
1551 reader->node->children = (xmlNodePtr)
1552 reader->ctxt->sax->getEntity(reader->ctxt, reader->node->name);
1553 }
1554
1555 if ((reader->node->children != NULL) &&
1556 (reader->node->children->type == XML_ENTITY_DECL) &&
1557 (reader->node->children->children != NULL)) {
1558 xmlTextReaderEntPush(reader, reader->node);
1559 reader->node = reader->node->children->children;
1560 }
1561 #ifdef LIBXML_REGEXP_ENABLED
1562 } else if ((reader->node != NULL) &&
1563 (reader->node->type == XML_ENTITY_REF_NODE) &&
1564 (reader->ctxt != NULL) && (reader->validate)) {
1565 xmlTextReaderValidateEntity(reader);
1566 #endif /* LIBXML_REGEXP_ENABLED */
1567 }
1568 if ((reader->node != NULL) &&
1569 (reader->node->type == XML_ENTITY_DECL) &&
1570 (reader->ent != NULL) && (reader->ent->children == reader->node)) {
1571 reader->node = xmlTextReaderEntPop(reader);
1572 reader->depth++;
1573 goto get_next_node;
1574 }
1575 #ifdef LIBXML_REGEXP_ENABLED
1576 if ((reader->validate != XML_TEXTREADER_NOT_VALIDATE) && (reader->node != NULL)) {
1577 xmlNodePtr node = reader->node;
1578
1579 if ((node->type == XML_ELEMENT_NODE) &&
1580 ((reader->state != XML_TEXTREADER_END) &&
1581 (reader->state != XML_TEXTREADER_BACKTRACK))) {
1582 xmlTextReaderValidatePush(reader);
1583 } else if ((node->type == XML_TEXT_NODE) ||
1584 (node->type == XML_CDATA_SECTION_NODE)) {
1585 xmlTextReaderValidateCData(reader, node->content,
1586 xmlStrlen(node->content));
1587 }
1588 }
1589 #endif /* LIBXML_REGEXP_ENABLED */
1590 #ifdef LIBXML_PATTERN_ENABLED
1591 if ((reader->patternNr > 0) && (reader->state != XML_TEXTREADER_END) &&
1592 (reader->state != XML_TEXTREADER_BACKTRACK)) {
1593 int i;
1594 for (i = 0;i < reader->patternNr;i++) {
1595 if (xmlPatternMatch(reader->patternTab[i], reader->node) == 1) {
1596 xmlTextReaderPreserve(reader);
1597 break;
1598 }
1599 }
1600 }
1601 #endif /* LIBXML_PATTERN_ENABLED */
1602 #ifdef LIBXML_SCHEMAS_ENABLED
1603 if ((reader->validate == XML_TEXTREADER_VALIDATE_XSD) &&
1604 (reader->xsdValidErrors == 0) &&
1605 (reader->xsdValidCtxt != NULL)) {
1606 reader->xsdValidErrors = !xmlSchemaIsValid(reader->xsdValidCtxt);
1607 }
1608 #endif /* LIBXML_PATTERN_ENABLED */
1609 return(1);
1610 node_end:
1611 reader->state = XML_TEXTREADER_DONE;
1612 return(0);
1613 }
1614
1615 /**
1616 * xmlTextReaderReadState:
1617 * @reader: the xmlTextReaderPtr used
1618 *
1619 * Gets the read state of the reader.
1620 *
1621 * Returns the state value, or -1 in case of error
1622 */
1623 int
xmlTextReaderReadState(xmlTextReaderPtr reader)1624 xmlTextReaderReadState(xmlTextReaderPtr reader) {
1625 if (reader == NULL)
1626 return(-1);
1627 return(reader->mode);
1628 }
1629
1630 /**
1631 * xmlTextReaderExpand:
1632 * @reader: the xmlTextReaderPtr used
1633 *
1634 * Reads the contents of the current node and the full subtree. It then makes
1635 * the subtree available until the next xmlTextReaderRead() call
1636 *
1637 * Returns a node pointer valid until the next xmlTextReaderRead() call
1638 * or NULL in case of error.
1639 */
1640 xmlNodePtr
xmlTextReaderExpand(xmlTextReaderPtr reader)1641 xmlTextReaderExpand(xmlTextReaderPtr reader) {
1642 if ((reader == NULL) || (reader->node == NULL))
1643 return(NULL);
1644 if (reader->doc != NULL)
1645 return(reader->node);
1646 if (reader->ctxt == NULL)
1647 return(NULL);
1648 if (xmlTextReaderDoExpand(reader) < 0)
1649 return(NULL);
1650 return(reader->node);
1651 }
1652
1653 /**
1654 * xmlTextReaderNext:
1655 * @reader: the xmlTextReaderPtr used
1656 *
1657 * Skip to the node following the current one in document order while
1658 * avoiding the subtree if any.
1659 *
1660 * Returns 1 if the node was read successfully, 0 if there is no more
1661 * nodes to read, or -1 in case of error
1662 */
1663 int
xmlTextReaderNext(xmlTextReaderPtr reader)1664 xmlTextReaderNext(xmlTextReaderPtr reader) {
1665 int ret;
1666 xmlNodePtr cur;
1667
1668 if (reader == NULL)
1669 return(-1);
1670 if (reader->doc != NULL)
1671 return(xmlTextReaderNextTree(reader));
1672 cur = reader->node;
1673 if ((cur == NULL) || (cur->type != XML_ELEMENT_NODE))
1674 return(xmlTextReaderRead(reader));
1675 if (reader->state == XML_TEXTREADER_END || reader->state == XML_TEXTREADER_BACKTRACK)
1676 return(xmlTextReaderRead(reader));
1677 if (cur->extra & NODE_IS_EMPTY)
1678 return(xmlTextReaderRead(reader));
1679 do {
1680 ret = xmlTextReaderRead(reader);
1681 if (ret != 1)
1682 return(ret);
1683 } while (reader->node != cur);
1684 return(xmlTextReaderRead(reader));
1685 }
1686
1687 #ifdef LIBXML_WRITER_ENABLED
1688 /**
1689 * xmlTextReaderReadInnerXml:
1690 * @reader: the xmlTextReaderPtr used
1691 *
1692 * Reads the contents of the current node, including child nodes and markup.
1693 *
1694 * Returns a string containing the XML content, or NULL if the current node
1695 * is neither an element nor attribute, or has no child nodes. The
1696 * string must be deallocated by the caller.
1697 */
1698 xmlChar *
xmlTextReaderReadInnerXml(xmlTextReaderPtr reader ATTRIBUTE_UNUSED)1699 xmlTextReaderReadInnerXml(xmlTextReaderPtr reader ATTRIBUTE_UNUSED)
1700 {
1701 xmlChar *resbuf;
1702 xmlNodePtr node, cur_node;
1703 xmlBufferPtr buff, buff2;
1704 xmlDocPtr doc;
1705
1706 if (xmlTextReaderExpand(reader) == NULL) {
1707 return NULL;
1708 }
1709 doc = reader->doc;
1710 buff = xmlBufferCreate();
1711 for (cur_node = reader->node->children; cur_node != NULL;
1712 cur_node = cur_node->next) {
1713 node = xmlDocCopyNode(cur_node, doc, 1);
1714 buff2 = xmlBufferCreate();
1715 if (xmlNodeDump(buff2, doc, node, 0, 0) == -1) {
1716 xmlFreeNode(node);
1717 xmlBufferFree(buff2);
1718 xmlBufferFree(buff);
1719 return NULL;
1720 }
1721 xmlBufferCat(buff, buff2->content);
1722 xmlFreeNode(node);
1723 xmlBufferFree(buff2);
1724 }
1725 resbuf = buff->content;
1726 buff->content = NULL;
1727
1728 xmlBufferFree(buff);
1729 return resbuf;
1730 }
1731 #endif
1732
1733 #ifdef LIBXML_WRITER_ENABLED
1734 /**
1735 * xmlTextReaderReadOuterXml:
1736 * @reader: the xmlTextReaderPtr used
1737 *
1738 * Reads the contents of the current node, including child nodes and markup.
1739 *
1740 * Returns a string containing the node and any XML content, or NULL if the
1741 * current node cannot be serialized. The string must be deallocated
1742 * by the caller.
1743 */
1744 xmlChar *
xmlTextReaderReadOuterXml(xmlTextReaderPtr reader ATTRIBUTE_UNUSED)1745 xmlTextReaderReadOuterXml(xmlTextReaderPtr reader ATTRIBUTE_UNUSED)
1746 {
1747 xmlChar *resbuf;
1748 xmlNodePtr node;
1749 xmlBufferPtr buff;
1750 xmlDocPtr doc;
1751
1752 node = reader->node;
1753 doc = reader->doc;
1754 if (xmlTextReaderExpand(reader) == NULL) {
1755 return NULL;
1756 }
1757 if (node->type == XML_DTD_NODE) {
1758 node = (xmlNodePtr) xmlCopyDtd((xmlDtdPtr) node);
1759 } else {
1760 node = xmlDocCopyNode(node, doc, 1);
1761 }
1762 buff = xmlBufferCreate();
1763 if (xmlNodeDump(buff, doc, node, 0, 0) == -1) {
1764 xmlFreeNode(node);
1765 xmlBufferFree(buff);
1766 return NULL;
1767 }
1768
1769 resbuf = buff->content;
1770 buff->content = NULL;
1771
1772 xmlFreeNode(node);
1773 xmlBufferFree(buff);
1774 return resbuf;
1775 }
1776 #endif
1777
1778 /**
1779 * xmlTextReaderReadString:
1780 * @reader: the xmlTextReaderPtr used
1781 *
1782 * Reads the contents of an element or a text node as a string.
1783 *
1784 * Returns a string containing the contents of the Element or Text node,
1785 * or NULL if the reader is positioned on any other type of node.
1786 * The string must be deallocated by the caller.
1787 */
1788 xmlChar *
xmlTextReaderReadString(xmlTextReaderPtr reader)1789 xmlTextReaderReadString(xmlTextReaderPtr reader)
1790 {
1791 xmlNodePtr node;
1792
1793 if ((reader == NULL) || (reader->node == NULL))
1794 return(NULL);
1795
1796 node = (reader->curnode != NULL) ? reader->curnode : reader->node;
1797 switch (node->type) {
1798 case XML_TEXT_NODE:
1799 if (node->content != NULL)
1800 return(xmlStrdup(node->content));
1801 break;
1802 case XML_ELEMENT_NODE:
1803 if (xmlTextReaderDoExpand(reader) != -1) {
1804 return xmlTextReaderCollectSiblings(node->children);
1805 }
1806 break;
1807 case XML_ATTRIBUTE_NODE:
1808 TODO
1809 break;
1810 default:
1811 break;
1812 }
1813 return(NULL);
1814 }
1815
1816 #if 0
1817 /**
1818 * xmlTextReaderReadBase64:
1819 * @reader: the xmlTextReaderPtr used
1820 * @array: a byte array to store the content.
1821 * @offset: the zero-based index into array where the method should
1822 * begin to write.
1823 * @len: the number of bytes to write.
1824 *
1825 * Reads and decodes the Base64 encoded contents of an element and
1826 * stores the result in a byte buffer.
1827 *
1828 * Returns the number of bytes written to array, or zero if the current
1829 * instance is not positioned on an element or -1 in case of error.
1830 */
1831 int
1832 xmlTextReaderReadBase64(xmlTextReaderPtr reader,
1833 unsigned char *array ATTRIBUTE_UNUSED,
1834 int offset ATTRIBUTE_UNUSED,
1835 int len ATTRIBUTE_UNUSED) {
1836 if ((reader == NULL) || (reader->ctxt == NULL))
1837 return(-1);
1838 if (reader->ctxt->wellFormed != 1)
1839 return(-1);
1840
1841 if ((reader->node == NULL) || (reader->node->type == XML_ELEMENT_NODE))
1842 return(0);
1843 TODO
1844 return(0);
1845 }
1846
1847 /**
1848 * xmlTextReaderReadBinHex:
1849 * @reader: the xmlTextReaderPtr used
1850 * @array: a byte array to store the content.
1851 * @offset: the zero-based index into array where the method should
1852 * begin to write.
1853 * @len: the number of bytes to write.
1854 *
1855 * Reads and decodes the BinHex encoded contents of an element and
1856 * stores the result in a byte buffer.
1857 *
1858 * Returns the number of bytes written to array, or zero if the current
1859 * instance is not positioned on an element or -1 in case of error.
1860 */
1861 int
1862 xmlTextReaderReadBinHex(xmlTextReaderPtr reader,
1863 unsigned char *array ATTRIBUTE_UNUSED,
1864 int offset ATTRIBUTE_UNUSED,
1865 int len ATTRIBUTE_UNUSED) {
1866 if ((reader == NULL) || (reader->ctxt == NULL))
1867 return(-1);
1868 if (reader->ctxt->wellFormed != 1)
1869 return(-1);
1870
1871 if ((reader->node == NULL) || (reader->node->type == XML_ELEMENT_NODE))
1872 return(0);
1873 TODO
1874 return(0);
1875 }
1876 #endif
1877
1878 /************************************************************************
1879 * *
1880 * Operating on a preparsed tree *
1881 * *
1882 ************************************************************************/
1883 static int
xmlTextReaderNextTree(xmlTextReaderPtr reader)1884 xmlTextReaderNextTree(xmlTextReaderPtr reader)
1885 {
1886 if (reader == NULL)
1887 return(-1);
1888
1889 if (reader->state == XML_TEXTREADER_END)
1890 return(0);
1891
1892 if (reader->node == NULL) {
1893 if (reader->doc->children == NULL) {
1894 reader->state = XML_TEXTREADER_END;
1895 return(0);
1896 }
1897
1898 reader->node = reader->doc->children;
1899 reader->state = XML_TEXTREADER_START;
1900 return(1);
1901 }
1902
1903 if (reader->state != XML_TEXTREADER_BACKTRACK) {
1904 /* Here removed traversal to child, because we want to skip the subtree,
1905 replace with traversal to sibling to skip subtree */
1906 if (reader->node->next != 0) {
1907 /* Move to sibling if present,skipping sub-tree */
1908 reader->node = reader->node->next;
1909 reader->state = XML_TEXTREADER_START;
1910 return(1);
1911 }
1912
1913 /* if reader->node->next is NULL mean no subtree for current node,
1914 so need to move to sibling of parent node if present */
1915 if ((reader->node->type == XML_ELEMENT_NODE) ||
1916 (reader->node->type == XML_ATTRIBUTE_NODE)) {
1917 reader->state = XML_TEXTREADER_BACKTRACK;
1918 /* This will move to parent if present */
1919 xmlTextReaderRead(reader);
1920 }
1921 }
1922
1923 if (reader->node->next != 0) {
1924 reader->node = reader->node->next;
1925 reader->state = XML_TEXTREADER_START;
1926 return(1);
1927 }
1928
1929 if (reader->node->parent != 0) {
1930 if (reader->node->parent->type == XML_DOCUMENT_NODE) {
1931 reader->state = XML_TEXTREADER_END;
1932 return(0);
1933 }
1934
1935 reader->node = reader->node->parent;
1936 reader->depth--;
1937 reader->state = XML_TEXTREADER_BACKTRACK;
1938 /* Repeat process to move to sibling of parent node if present */
1939 xmlTextReaderNextTree(reader);
1940 }
1941
1942 reader->state = XML_TEXTREADER_END;
1943
1944 return(1);
1945 }
1946
1947 /**
1948 * xmlTextReaderReadTree:
1949 * @reader: the xmlTextReaderPtr used
1950 *
1951 * Moves the position of the current instance to the next node in
1952 * the stream, exposing its properties.
1953 *
1954 * Returns 1 if the node was read successfully, 0 if there is no more
1955 * nodes to read, or -1 in case of error
1956 */
1957 static int
xmlTextReaderReadTree(xmlTextReaderPtr reader)1958 xmlTextReaderReadTree(xmlTextReaderPtr reader) {
1959 if (reader->state == XML_TEXTREADER_END)
1960 return(0);
1961
1962 next_node:
1963 if (reader->node == NULL) {
1964 if (reader->doc->children == NULL) {
1965 reader->state = XML_TEXTREADER_END;
1966 return(0);
1967 }
1968
1969 reader->node = reader->doc->children;
1970 reader->state = XML_TEXTREADER_START;
1971 goto found_node;
1972 }
1973
1974 if ((reader->state != XML_TEXTREADER_BACKTRACK) &&
1975 (reader->node->type != XML_DTD_NODE) &&
1976 (reader->node->type != XML_XINCLUDE_START) &&
1977 (reader->node->type != XML_ENTITY_REF_NODE)) {
1978 if (reader->node->children != NULL) {
1979 reader->node = reader->node->children;
1980 reader->depth++;
1981 reader->state = XML_TEXTREADER_START;
1982 goto found_node;
1983 }
1984
1985 if (reader->node->type == XML_ATTRIBUTE_NODE) {
1986 reader->state = XML_TEXTREADER_BACKTRACK;
1987 goto found_node;
1988 }
1989 }
1990
1991 if (reader->node->next != NULL) {
1992 reader->node = reader->node->next;
1993 reader->state = XML_TEXTREADER_START;
1994 goto found_node;
1995 }
1996
1997 if (reader->node->parent != NULL) {
1998 if ((reader->node->parent->type == XML_DOCUMENT_NODE) ||
1999 (reader->node->parent->type == XML_HTML_DOCUMENT_NODE)) {
2000 reader->state = XML_TEXTREADER_END;
2001 return(0);
2002 }
2003
2004 reader->node = reader->node->parent;
2005 reader->depth--;
2006 reader->state = XML_TEXTREADER_BACKTRACK;
2007 goto found_node;
2008 }
2009
2010 reader->state = XML_TEXTREADER_END;
2011
2012 found_node:
2013 if ((reader->node->type == XML_XINCLUDE_START) ||
2014 (reader->node->type == XML_XINCLUDE_END))
2015 goto next_node;
2016
2017 return(1);
2018 }
2019
2020 /**
2021 * xmlTextReaderNextSibling:
2022 * @reader: the xmlTextReaderPtr used
2023 *
2024 * Skip to the node following the current one in document order while
2025 * avoiding the subtree if any.
2026 * Currently implemented only for Readers built on a document
2027 *
2028 * Returns 1 if the node was read successfully, 0 if there is no more
2029 * nodes to read, or -1 in case of error
2030 */
2031 int
xmlTextReaderNextSibling(xmlTextReaderPtr reader)2032 xmlTextReaderNextSibling(xmlTextReaderPtr reader) {
2033 if (reader == NULL)
2034 return(-1);
2035 if (reader->doc == NULL) {
2036 /* TODO */
2037 return(-1);
2038 }
2039
2040 if (reader->state == XML_TEXTREADER_END)
2041 return(0);
2042
2043 if (reader->node == NULL)
2044 return(xmlTextReaderNextTree(reader));
2045
2046 if (reader->node->next != NULL) {
2047 reader->node = reader->node->next;
2048 reader->state = XML_TEXTREADER_START;
2049 return(1);
2050 }
2051
2052 return(0);
2053 }
2054
2055 /************************************************************************
2056 * *
2057 * Constructor and destructors *
2058 * *
2059 ************************************************************************/
2060 /**
2061 * xmlNewTextReader:
2062 * @input: the xmlParserInputBufferPtr used to read data
2063 * @URI: the URI information for the source if available
2064 *
2065 * Create an xmlTextReader structure fed with @input
2066 *
2067 * Returns the new xmlTextReaderPtr or NULL in case of error
2068 */
2069 xmlTextReaderPtr
xmlNewTextReader(xmlParserInputBufferPtr input,const char * URI)2070 xmlNewTextReader(xmlParserInputBufferPtr input, const char *URI) {
2071 xmlTextReaderPtr ret;
2072
2073 if (input == NULL)
2074 return(NULL);
2075 ret = xmlMalloc(sizeof(xmlTextReader));
2076 if (ret == NULL) {
2077 xmlGenericError(xmlGenericErrorContext,
2078 "xmlNewTextReader : malloc failed\n");
2079 return(NULL);
2080 }
2081 memset(ret, 0, sizeof(xmlTextReader));
2082 ret->doc = NULL;
2083 ret->entTab = NULL;
2084 ret->entMax = 0;
2085 ret->entNr = 0;
2086 ret->input = input;
2087 ret->buffer = xmlBufCreateSize(100);
2088 if (ret->buffer == NULL) {
2089 xmlFree(ret);
2090 xmlGenericError(xmlGenericErrorContext,
2091 "xmlNewTextReader : malloc failed\n");
2092 return(NULL);
2093 }
2094 ret->sax = (xmlSAXHandler *) xmlMalloc(sizeof(xmlSAXHandler));
2095 if (ret->sax == NULL) {
2096 xmlBufFree(ret->buffer);
2097 xmlFree(ret);
2098 xmlGenericError(xmlGenericErrorContext,
2099 "xmlNewTextReader : malloc failed\n");
2100 return(NULL);
2101 }
2102 xmlSAXVersion(ret->sax, 2);
2103 ret->startElement = ret->sax->startElement;
2104 ret->sax->startElement = xmlTextReaderStartElement;
2105 ret->endElement = ret->sax->endElement;
2106 ret->sax->endElement = xmlTextReaderEndElement;
2107 #ifdef LIBXML_SAX1_ENABLED
2108 if (ret->sax->initialized == XML_SAX2_MAGIC) {
2109 #endif /* LIBXML_SAX1_ENABLED */
2110 ret->startElementNs = ret->sax->startElementNs;
2111 ret->sax->startElementNs = xmlTextReaderStartElementNs;
2112 ret->endElementNs = ret->sax->endElementNs;
2113 ret->sax->endElementNs = xmlTextReaderEndElementNs;
2114 #ifdef LIBXML_SAX1_ENABLED
2115 } else {
2116 ret->startElementNs = NULL;
2117 ret->endElementNs = NULL;
2118 }
2119 #endif /* LIBXML_SAX1_ENABLED */
2120 ret->characters = ret->sax->characters;
2121 ret->sax->characters = xmlTextReaderCharacters;
2122 ret->sax->ignorableWhitespace = xmlTextReaderCharacters;
2123 ret->cdataBlock = ret->sax->cdataBlock;
2124 ret->sax->cdataBlock = xmlTextReaderCDataBlock;
2125
2126 ret->mode = XML_TEXTREADER_MODE_INITIAL;
2127 ret->node = NULL;
2128 ret->curnode = NULL;
2129 if (xmlBufUse(ret->input->buffer) < 4) {
2130 xmlParserInputBufferRead(input, 4);
2131 }
2132 if (xmlBufUse(ret->input->buffer) >= 4) {
2133 ret->ctxt = xmlCreatePushParserCtxt(ret->sax, NULL,
2134 (const char *) xmlBufContent(ret->input->buffer),
2135 4, URI);
2136 ret->base = 0;
2137 ret->cur = 4;
2138 } else {
2139 ret->ctxt = xmlCreatePushParserCtxt(ret->sax, NULL, NULL, 0, URI);
2140 ret->base = 0;
2141 ret->cur = 0;
2142 }
2143
2144 if (ret->ctxt == NULL) {
2145 xmlGenericError(xmlGenericErrorContext,
2146 "xmlNewTextReader : malloc failed\n");
2147 xmlBufFree(ret->buffer);
2148 xmlFree(ret->sax);
2149 xmlFree(ret);
2150 return(NULL);
2151 }
2152 ret->ctxt->parseMode = XML_PARSE_READER;
2153 ret->ctxt->_private = ret;
2154 ret->ctxt->linenumbers = 1;
2155 ret->ctxt->dictNames = 1;
2156 ret->allocs = XML_TEXTREADER_CTXT;
2157 /*
2158 * use the parser dictionnary to allocate all elements and attributes names
2159 */
2160 ret->ctxt->docdict = 1;
2161 ret->dict = ret->ctxt->dict;
2162 #ifdef LIBXML_XINCLUDE_ENABLED
2163 ret->xinclude = 0;
2164 #endif
2165 #ifdef LIBXML_PATTERN_ENABLED
2166 ret->patternMax = 0;
2167 ret->patternTab = NULL;
2168 #endif
2169 return(ret);
2170 }
2171
2172 /**
2173 * xmlNewTextReaderFilename:
2174 * @URI: the URI of the resource to process
2175 *
2176 * Create an xmlTextReader structure fed with the resource at @URI
2177 *
2178 * Returns the new xmlTextReaderPtr or NULL in case of error
2179 */
2180 xmlTextReaderPtr
xmlNewTextReaderFilename(const char * URI)2181 xmlNewTextReaderFilename(const char *URI) {
2182 xmlParserInputBufferPtr input;
2183 xmlTextReaderPtr ret;
2184 char *directory = NULL;
2185
2186 input = xmlParserInputBufferCreateFilename(URI, XML_CHAR_ENCODING_NONE);
2187 if (input == NULL)
2188 return(NULL);
2189 ret = xmlNewTextReader(input, URI);
2190 if (ret == NULL) {
2191 xmlFreeParserInputBuffer(input);
2192 return(NULL);
2193 }
2194 ret->allocs |= XML_TEXTREADER_INPUT;
2195 if (ret->ctxt->directory == NULL)
2196 directory = xmlParserGetDirectory(URI);
2197 if ((ret->ctxt->directory == NULL) && (directory != NULL))
2198 ret->ctxt->directory = (char *) xmlStrdup((xmlChar *) directory);
2199 if (directory != NULL)
2200 xmlFree(directory);
2201 return(ret);
2202 }
2203
2204 /**
2205 * xmlFreeTextReader:
2206 * @reader: the xmlTextReaderPtr
2207 *
2208 * Deallocate all the resources associated to the reader
2209 */
2210 void
xmlFreeTextReader(xmlTextReaderPtr reader)2211 xmlFreeTextReader(xmlTextReaderPtr reader) {
2212 if (reader == NULL)
2213 return;
2214 #ifdef LIBXML_SCHEMAS_ENABLED
2215 if (reader->rngSchemas != NULL) {
2216 xmlRelaxNGFree(reader->rngSchemas);
2217 reader->rngSchemas = NULL;
2218 }
2219 if (reader->rngValidCtxt != NULL) {
2220 if (! reader->rngPreserveCtxt)
2221 xmlRelaxNGFreeValidCtxt(reader->rngValidCtxt);
2222 reader->rngValidCtxt = NULL;
2223 }
2224 if (reader->xsdPlug != NULL) {
2225 xmlSchemaSAXUnplug(reader->xsdPlug);
2226 reader->xsdPlug = NULL;
2227 }
2228 if (reader->xsdValidCtxt != NULL) {
2229 if (! reader->xsdPreserveCtxt)
2230 xmlSchemaFreeValidCtxt(reader->xsdValidCtxt);
2231 reader->xsdValidCtxt = NULL;
2232 }
2233 if (reader->xsdSchemas != NULL) {
2234 xmlSchemaFree(reader->xsdSchemas);
2235 reader->xsdSchemas = NULL;
2236 }
2237 #endif
2238 #ifdef LIBXML_XINCLUDE_ENABLED
2239 if (reader->xincctxt != NULL)
2240 xmlXIncludeFreeContext(reader->xincctxt);
2241 #endif
2242 #ifdef LIBXML_PATTERN_ENABLED
2243 if (reader->patternTab != NULL) {
2244 int i;
2245 for (i = 0;i < reader->patternNr;i++) {
2246 if (reader->patternTab[i] != NULL)
2247 xmlFreePattern(reader->patternTab[i]);
2248 }
2249 xmlFree(reader->patternTab);
2250 }
2251 #endif
2252 if (reader->faketext != NULL) {
2253 xmlFreeNode(reader->faketext);
2254 }
2255 if (reader->ctxt != NULL) {
2256 if (reader->dict == reader->ctxt->dict)
2257 reader->dict = NULL;
2258 if (reader->ctxt->myDoc != NULL) {
2259 if (reader->preserve == 0)
2260 xmlTextReaderFreeDoc(reader, reader->ctxt->myDoc);
2261 reader->ctxt->myDoc = NULL;
2262 }
2263 if ((reader->ctxt->vctxt.vstateTab != NULL) &&
2264 (reader->ctxt->vctxt.vstateMax > 0)){
2265 xmlFree(reader->ctxt->vctxt.vstateTab);
2266 reader->ctxt->vctxt.vstateTab = NULL;
2267 reader->ctxt->vctxt.vstateMax = 0;
2268 }
2269 if (reader->allocs & XML_TEXTREADER_CTXT)
2270 xmlFreeParserCtxt(reader->ctxt);
2271 }
2272 if (reader->sax != NULL)
2273 xmlFree(reader->sax);
2274 if ((reader->input != NULL) && (reader->allocs & XML_TEXTREADER_INPUT))
2275 xmlFreeParserInputBuffer(reader->input);
2276 if (reader->buffer != NULL)
2277 xmlBufFree(reader->buffer);
2278 if (reader->entTab != NULL)
2279 xmlFree(reader->entTab);
2280 if (reader->dict != NULL)
2281 xmlDictFree(reader->dict);
2282 xmlFree(reader);
2283 }
2284
2285 /************************************************************************
2286 * *
2287 * Methods for XmlTextReader *
2288 * *
2289 ************************************************************************/
2290 /**
2291 * xmlTextReaderClose:
2292 * @reader: the xmlTextReaderPtr used
2293 *
2294 * This method releases any resources allocated by the current instance
2295 * changes the state to Closed and close any underlying input.
2296 *
2297 * Returns 0 or -1 in case of error
2298 */
2299 int
xmlTextReaderClose(xmlTextReaderPtr reader)2300 xmlTextReaderClose(xmlTextReaderPtr reader) {
2301 if (reader == NULL)
2302 return(-1);
2303 reader->node = NULL;
2304 reader->curnode = NULL;
2305 reader->mode = XML_TEXTREADER_MODE_CLOSED;
2306 if (reader->ctxt != NULL) {
2307 xmlStopParser(reader->ctxt);
2308 if (reader->ctxt->myDoc != NULL) {
2309 if (reader->preserve == 0)
2310 xmlTextReaderFreeDoc(reader, reader->ctxt->myDoc);
2311 reader->ctxt->myDoc = NULL;
2312 }
2313 }
2314 if ((reader->input != NULL) && (reader->allocs & XML_TEXTREADER_INPUT)) {
2315 xmlFreeParserInputBuffer(reader->input);
2316 reader->allocs -= XML_TEXTREADER_INPUT;
2317 }
2318 return(0);
2319 }
2320
2321 /**
2322 * xmlTextReaderGetAttributeNo:
2323 * @reader: the xmlTextReaderPtr used
2324 * @no: the zero-based index of the attribute relative to the containing element
2325 *
2326 * Provides the value of the attribute with the specified index relative
2327 * to the containing element.
2328 *
2329 * Returns a string containing the value of the specified attribute, or NULL
2330 * in case of error. The string must be deallocated by the caller.
2331 */
2332 xmlChar *
xmlTextReaderGetAttributeNo(xmlTextReaderPtr reader,int no)2333 xmlTextReaderGetAttributeNo(xmlTextReaderPtr reader, int no) {
2334 xmlChar *ret;
2335 int i;
2336 xmlAttrPtr cur;
2337 xmlNsPtr ns;
2338
2339 if (reader == NULL)
2340 return(NULL);
2341 if (reader->node == NULL)
2342 return(NULL);
2343 if (reader->curnode != NULL)
2344 return(NULL);
2345 /* TODO: handle the xmlDecl */
2346 if (reader->node->type != XML_ELEMENT_NODE)
2347 return(NULL);
2348
2349 ns = reader->node->nsDef;
2350 for (i = 0;(i < no) && (ns != NULL);i++) {
2351 ns = ns->next;
2352 }
2353 if (ns != NULL)
2354 return(xmlStrdup(ns->href));
2355
2356 cur = reader->node->properties;
2357 if (cur == NULL)
2358 return(NULL);
2359 for (;i < no;i++) {
2360 cur = cur->next;
2361 if (cur == NULL)
2362 return(NULL);
2363 }
2364 /* TODO walk the DTD if present */
2365
2366 ret = xmlNodeListGetString(reader->node->doc, cur->children, 1);
2367 if (ret == NULL) return(xmlStrdup((xmlChar *)""));
2368 return(ret);
2369 }
2370
2371 /**
2372 * xmlTextReaderGetAttribute:
2373 * @reader: the xmlTextReaderPtr used
2374 * @name: the qualified name of the attribute.
2375 *
2376 * Provides the value of the attribute with the specified qualified name.
2377 *
2378 * Returns a string containing the value of the specified attribute, or NULL
2379 * in case of error. The string must be deallocated by the caller.
2380 */
2381 xmlChar *
xmlTextReaderGetAttribute(xmlTextReaderPtr reader,const xmlChar * name)2382 xmlTextReaderGetAttribute(xmlTextReaderPtr reader, const xmlChar *name) {
2383 xmlChar *prefix = NULL;
2384 xmlChar *localname;
2385 xmlNsPtr ns;
2386 xmlChar *ret = NULL;
2387
2388 if ((reader == NULL) || (name == NULL))
2389 return(NULL);
2390 if (reader->node == NULL)
2391 return(NULL);
2392 if (reader->curnode != NULL)
2393 return(NULL);
2394
2395 /* TODO: handle the xmlDecl */
2396 if (reader->node->type != XML_ELEMENT_NODE)
2397 return(NULL);
2398
2399 localname = xmlSplitQName2(name, &prefix);
2400 if (localname == NULL) {
2401 /*
2402 * Namespace default decl
2403 */
2404 if (xmlStrEqual(name, BAD_CAST "xmlns")) {
2405 ns = reader->node->nsDef;
2406 while (ns != NULL) {
2407 if (ns->prefix == NULL) {
2408 return(xmlStrdup(ns->href));
2409 }
2410 ns = ns->next;
2411 }
2412 return NULL;
2413 }
2414 return(xmlGetNoNsProp(reader->node, name));
2415 }
2416
2417 /*
2418 * Namespace default decl
2419 */
2420 if (xmlStrEqual(prefix, BAD_CAST "xmlns")) {
2421 ns = reader->node->nsDef;
2422 while (ns != NULL) {
2423 if ((ns->prefix != NULL) && (xmlStrEqual(ns->prefix, localname))) {
2424 ret = xmlStrdup(ns->href);
2425 break;
2426 }
2427 ns = ns->next;
2428 }
2429 } else {
2430 ns = xmlSearchNs(reader->node->doc, reader->node, prefix);
2431 if (ns != NULL)
2432 ret = xmlGetNsProp(reader->node, localname, ns->href);
2433 }
2434
2435 xmlFree(localname);
2436 if (prefix != NULL)
2437 xmlFree(prefix);
2438 return(ret);
2439 }
2440
2441
2442 /**
2443 * xmlTextReaderGetAttributeNs:
2444 * @reader: the xmlTextReaderPtr used
2445 * @localName: the local name of the attribute.
2446 * @namespaceURI: the namespace URI of the attribute.
2447 *
2448 * Provides the value of the specified attribute
2449 *
2450 * Returns a string containing the value of the specified attribute, or NULL
2451 * in case of error. The string must be deallocated by the caller.
2452 */
2453 xmlChar *
xmlTextReaderGetAttributeNs(xmlTextReaderPtr reader,const xmlChar * localName,const xmlChar * namespaceURI)2454 xmlTextReaderGetAttributeNs(xmlTextReaderPtr reader, const xmlChar *localName,
2455 const xmlChar *namespaceURI) {
2456 xmlChar *prefix = NULL;
2457 xmlNsPtr ns;
2458
2459 if ((reader == NULL) || (localName == NULL))
2460 return(NULL);
2461 if (reader->node == NULL)
2462 return(NULL);
2463 if (reader->curnode != NULL)
2464 return(NULL);
2465
2466 /* TODO: handle the xmlDecl */
2467 if (reader->node->type != XML_ELEMENT_NODE)
2468 return(NULL);
2469
2470 if (xmlStrEqual(namespaceURI, BAD_CAST "http://www.w3.org/2000/xmlns/")) {
2471 if (! xmlStrEqual(localName, BAD_CAST "xmlns")) {
2472 prefix = BAD_CAST localName;
2473 }
2474 ns = reader->node->nsDef;
2475 while (ns != NULL) {
2476 if ((prefix == NULL && ns->prefix == NULL) ||
2477 ((ns->prefix != NULL) && (xmlStrEqual(ns->prefix, localName)))) {
2478 return xmlStrdup(ns->href);
2479 }
2480 ns = ns->next;
2481 }
2482 return NULL;
2483 }
2484
2485 return(xmlGetNsProp(reader->node, localName, namespaceURI));
2486 }
2487
2488 /**
2489 * xmlTextReaderGetRemainder:
2490 * @reader: the xmlTextReaderPtr used
2491 *
2492 * Method to get the remainder of the buffered XML. this method stops the
2493 * parser, set its state to End Of File and return the input stream with
2494 * what is left that the parser did not use.
2495 *
2496 * The implementation is not good, the parser certainly procgressed past
2497 * what's left in reader->input, and there is an allocation problem. Best
2498 * would be to rewrite it differently.
2499 *
2500 * Returns the xmlParserInputBufferPtr attached to the XML or NULL
2501 * in case of error.
2502 */
2503 xmlParserInputBufferPtr
xmlTextReaderGetRemainder(xmlTextReaderPtr reader)2504 xmlTextReaderGetRemainder(xmlTextReaderPtr reader) {
2505 xmlParserInputBufferPtr ret = NULL;
2506
2507 if (reader == NULL)
2508 return(NULL);
2509 if (reader->node == NULL)
2510 return(NULL);
2511
2512 reader->node = NULL;
2513 reader->curnode = NULL;
2514 reader->mode = XML_TEXTREADER_MODE_EOF;
2515 if (reader->ctxt != NULL) {
2516 xmlStopParser(reader->ctxt);
2517 if (reader->ctxt->myDoc != NULL) {
2518 if (reader->preserve == 0)
2519 xmlTextReaderFreeDoc(reader, reader->ctxt->myDoc);
2520 reader->ctxt->myDoc = NULL;
2521 }
2522 }
2523 if (reader->allocs & XML_TEXTREADER_INPUT) {
2524 ret = reader->input;
2525 reader->input = NULL;
2526 reader->allocs -= XML_TEXTREADER_INPUT;
2527 } else {
2528 /*
2529 * Hum, one may need to duplicate the data structure because
2530 * without reference counting the input may be freed twice:
2531 * - by the layer which allocated it.
2532 * - by the layer to which would have been returned to.
2533 */
2534 TODO
2535 return(NULL);
2536 }
2537 return(ret);
2538 }
2539
2540 /**
2541 * xmlTextReaderLookupNamespace:
2542 * @reader: the xmlTextReaderPtr used
2543 * @prefix: the prefix whose namespace URI is to be resolved. To return
2544 * the default namespace, specify NULL
2545 *
2546 * Resolves a namespace prefix in the scope of the current element.
2547 *
2548 * Returns a string containing the namespace URI to which the prefix maps
2549 * or NULL in case of error. The string must be deallocated by the caller.
2550 */
2551 xmlChar *
xmlTextReaderLookupNamespace(xmlTextReaderPtr reader,const xmlChar * prefix)2552 xmlTextReaderLookupNamespace(xmlTextReaderPtr reader, const xmlChar *prefix) {
2553 xmlNsPtr ns;
2554
2555 if (reader == NULL)
2556 return(NULL);
2557 if (reader->node == NULL)
2558 return(NULL);
2559
2560 ns = xmlSearchNs(reader->node->doc, reader->node, prefix);
2561 if (ns == NULL)
2562 return(NULL);
2563 return(xmlStrdup(ns->href));
2564 }
2565
2566 /**
2567 * xmlTextReaderMoveToAttributeNo:
2568 * @reader: the xmlTextReaderPtr used
2569 * @no: the zero-based index of the attribute relative to the containing
2570 * element.
2571 *
2572 * Moves the position of the current instance to the attribute with
2573 * the specified index relative to the containing element.
2574 *
2575 * Returns 1 in case of success, -1 in case of error, 0 if not found
2576 */
2577 int
xmlTextReaderMoveToAttributeNo(xmlTextReaderPtr reader,int no)2578 xmlTextReaderMoveToAttributeNo(xmlTextReaderPtr reader, int no) {
2579 int i;
2580 xmlAttrPtr cur;
2581 xmlNsPtr ns;
2582
2583 if (reader == NULL)
2584 return(-1);
2585 if (reader->node == NULL)
2586 return(-1);
2587 /* TODO: handle the xmlDecl */
2588 if (reader->node->type != XML_ELEMENT_NODE)
2589 return(-1);
2590
2591 reader->curnode = NULL;
2592
2593 ns = reader->node->nsDef;
2594 for (i = 0;(i < no) && (ns != NULL);i++) {
2595 ns = ns->next;
2596 }
2597 if (ns != NULL) {
2598 reader->curnode = (xmlNodePtr) ns;
2599 return(1);
2600 }
2601
2602 cur = reader->node->properties;
2603 if (cur == NULL)
2604 return(0);
2605 for (;i < no;i++) {
2606 cur = cur->next;
2607 if (cur == NULL)
2608 return(0);
2609 }
2610 /* TODO walk the DTD if present */
2611
2612 reader->curnode = (xmlNodePtr) cur;
2613 return(1);
2614 }
2615
2616 /**
2617 * xmlTextReaderMoveToAttribute:
2618 * @reader: the xmlTextReaderPtr used
2619 * @name: the qualified name of the attribute.
2620 *
2621 * Moves the position of the current instance to the attribute with
2622 * the specified qualified name.
2623 *
2624 * Returns 1 in case of success, -1 in case of error, 0 if not found
2625 */
2626 int
xmlTextReaderMoveToAttribute(xmlTextReaderPtr reader,const xmlChar * name)2627 xmlTextReaderMoveToAttribute(xmlTextReaderPtr reader, const xmlChar *name) {
2628 xmlChar *prefix = NULL;
2629 xmlChar *localname;
2630 xmlNsPtr ns;
2631 xmlAttrPtr prop;
2632
2633 if ((reader == NULL) || (name == NULL))
2634 return(-1);
2635 if (reader->node == NULL)
2636 return(-1);
2637
2638 /* TODO: handle the xmlDecl */
2639 if (reader->node->type != XML_ELEMENT_NODE)
2640 return(0);
2641
2642 localname = xmlSplitQName2(name, &prefix);
2643 if (localname == NULL) {
2644 /*
2645 * Namespace default decl
2646 */
2647 if (xmlStrEqual(name, BAD_CAST "xmlns")) {
2648 ns = reader->node->nsDef;
2649 while (ns != NULL) {
2650 if (ns->prefix == NULL) {
2651 reader->curnode = (xmlNodePtr) ns;
2652 return(1);
2653 }
2654 ns = ns->next;
2655 }
2656 return(0);
2657 }
2658
2659 prop = reader->node->properties;
2660 while (prop != NULL) {
2661 /*
2662 * One need to have
2663 * - same attribute names
2664 * - and the attribute carrying that namespace
2665 */
2666 if ((xmlStrEqual(prop->name, name)) &&
2667 ((prop->ns == NULL) || (prop->ns->prefix == NULL))) {
2668 reader->curnode = (xmlNodePtr) prop;
2669 return(1);
2670 }
2671 prop = prop->next;
2672 }
2673 return(0);
2674 }
2675
2676 /*
2677 * Namespace default decl
2678 */
2679 if (xmlStrEqual(prefix, BAD_CAST "xmlns")) {
2680 ns = reader->node->nsDef;
2681 while (ns != NULL) {
2682 if ((ns->prefix != NULL) && (xmlStrEqual(ns->prefix, localname))) {
2683 reader->curnode = (xmlNodePtr) ns;
2684 goto found;
2685 }
2686 ns = ns->next;
2687 }
2688 goto not_found;
2689 }
2690 prop = reader->node->properties;
2691 while (prop != NULL) {
2692 /*
2693 * One need to have
2694 * - same attribute names
2695 * - and the attribute carrying that namespace
2696 */
2697 if ((xmlStrEqual(prop->name, localname)) &&
2698 (prop->ns != NULL) && (xmlStrEqual(prop->ns->prefix, prefix))) {
2699 reader->curnode = (xmlNodePtr) prop;
2700 goto found;
2701 }
2702 prop = prop->next;
2703 }
2704 not_found:
2705 if (localname != NULL)
2706 xmlFree(localname);
2707 if (prefix != NULL)
2708 xmlFree(prefix);
2709 return(0);
2710
2711 found:
2712 if (localname != NULL)
2713 xmlFree(localname);
2714 if (prefix != NULL)
2715 xmlFree(prefix);
2716 return(1);
2717 }
2718
2719 /**
2720 * xmlTextReaderMoveToAttributeNs:
2721 * @reader: the xmlTextReaderPtr used
2722 * @localName: the local name of the attribute.
2723 * @namespaceURI: the namespace URI of the attribute.
2724 *
2725 * Moves the position of the current instance to the attribute with the
2726 * specified local name and namespace URI.
2727 *
2728 * Returns 1 in case of success, -1 in case of error, 0 if not found
2729 */
2730 int
xmlTextReaderMoveToAttributeNs(xmlTextReaderPtr reader,const xmlChar * localName,const xmlChar * namespaceURI)2731 xmlTextReaderMoveToAttributeNs(xmlTextReaderPtr reader,
2732 const xmlChar *localName, const xmlChar *namespaceURI) {
2733 xmlAttrPtr prop;
2734 xmlNodePtr node;
2735 xmlNsPtr ns;
2736 xmlChar *prefix = NULL;
2737
2738 if ((reader == NULL) || (localName == NULL) || (namespaceURI == NULL))
2739 return(-1);
2740 if (reader->node == NULL)
2741 return(-1);
2742 if (reader->node->type != XML_ELEMENT_NODE)
2743 return(0);
2744 node = reader->node;
2745
2746 if (xmlStrEqual(namespaceURI, BAD_CAST "http://www.w3.org/2000/xmlns/")) {
2747 if (! xmlStrEqual(localName, BAD_CAST "xmlns")) {
2748 prefix = BAD_CAST localName;
2749 }
2750 ns = reader->node->nsDef;
2751 while (ns != NULL) {
2752 if ((prefix == NULL && ns->prefix == NULL) ||
2753 ((ns->prefix != NULL) && (xmlStrEqual(ns->prefix, localName)))) {
2754 reader->curnode = (xmlNodePtr) ns;
2755 return(1);
2756 }
2757 ns = ns->next;
2758 }
2759 return(0);
2760 }
2761
2762 prop = node->properties;
2763 while (prop != NULL) {
2764 /*
2765 * One need to have
2766 * - same attribute names
2767 * - and the attribute carrying that namespace
2768 */
2769 if (xmlStrEqual(prop->name, localName) &&
2770 ((prop->ns != NULL) &&
2771 (xmlStrEqual(prop->ns->href, namespaceURI)))) {
2772 reader->curnode = (xmlNodePtr) prop;
2773 return(1);
2774 }
2775 prop = prop->next;
2776 }
2777 return(0);
2778 }
2779
2780 /**
2781 * xmlTextReaderMoveToFirstAttribute:
2782 * @reader: the xmlTextReaderPtr used
2783 *
2784 * Moves the position of the current instance to the first attribute
2785 * associated with the current node.
2786 *
2787 * Returns 1 in case of success, -1 in case of error, 0 if not found
2788 */
2789 int
xmlTextReaderMoveToFirstAttribute(xmlTextReaderPtr reader)2790 xmlTextReaderMoveToFirstAttribute(xmlTextReaderPtr reader) {
2791 if (reader == NULL)
2792 return(-1);
2793 if (reader->node == NULL)
2794 return(-1);
2795 if (reader->node->type != XML_ELEMENT_NODE)
2796 return(0);
2797
2798 if (reader->node->nsDef != NULL) {
2799 reader->curnode = (xmlNodePtr) reader->node->nsDef;
2800 return(1);
2801 }
2802 if (reader->node->properties != NULL) {
2803 reader->curnode = (xmlNodePtr) reader->node->properties;
2804 return(1);
2805 }
2806 return(0);
2807 }
2808
2809 /**
2810 * xmlTextReaderMoveToNextAttribute:
2811 * @reader: the xmlTextReaderPtr used
2812 *
2813 * Moves the position of the current instance to the next attribute
2814 * associated with the current node.
2815 *
2816 * Returns 1 in case of success, -1 in case of error, 0 if not found
2817 */
2818 int
xmlTextReaderMoveToNextAttribute(xmlTextReaderPtr reader)2819 xmlTextReaderMoveToNextAttribute(xmlTextReaderPtr reader) {
2820 if (reader == NULL)
2821 return(-1);
2822 if (reader->node == NULL)
2823 return(-1);
2824 if (reader->node->type != XML_ELEMENT_NODE)
2825 return(0);
2826 if (reader->curnode == NULL)
2827 return(xmlTextReaderMoveToFirstAttribute(reader));
2828
2829 if (reader->curnode->type == XML_NAMESPACE_DECL) {
2830 xmlNsPtr ns = (xmlNsPtr) reader->curnode;
2831 if (ns->next != NULL) {
2832 reader->curnode = (xmlNodePtr) ns->next;
2833 return(1);
2834 }
2835 if (reader->node->properties != NULL) {
2836 reader->curnode = (xmlNodePtr) reader->node->properties;
2837 return(1);
2838 }
2839 return(0);
2840 } else if ((reader->curnode->type == XML_ATTRIBUTE_NODE) &&
2841 (reader->curnode->next != NULL)) {
2842 reader->curnode = reader->curnode->next;
2843 return(1);
2844 }
2845 return(0);
2846 }
2847
2848 /**
2849 * xmlTextReaderMoveToElement:
2850 * @reader: the xmlTextReaderPtr used
2851 *
2852 * Moves the position of the current instance to the node that
2853 * contains the current Attribute node.
2854 *
2855 * Returns 1 in case of success, -1 in case of error, 0 if not moved
2856 */
2857 int
xmlTextReaderMoveToElement(xmlTextReaderPtr reader)2858 xmlTextReaderMoveToElement(xmlTextReaderPtr reader) {
2859 if (reader == NULL)
2860 return(-1);
2861 if (reader->node == NULL)
2862 return(-1);
2863 if (reader->node->type != XML_ELEMENT_NODE)
2864 return(0);
2865 if (reader->curnode != NULL) {
2866 reader->curnode = NULL;
2867 return(1);
2868 }
2869 return(0);
2870 }
2871
2872 /**
2873 * xmlTextReaderReadAttributeValue:
2874 * @reader: the xmlTextReaderPtr used
2875 *
2876 * Parses an attribute value into one or more Text and EntityReference nodes.
2877 *
2878 * Returns 1 in case of success, 0 if the reader was not positionned on an
2879 * ttribute node or all the attribute values have been read, or -1
2880 * in case of error.
2881 */
2882 int
xmlTextReaderReadAttributeValue(xmlTextReaderPtr reader)2883 xmlTextReaderReadAttributeValue(xmlTextReaderPtr reader) {
2884 if (reader == NULL)
2885 return(-1);
2886 if (reader->node == NULL)
2887 return(-1);
2888 if (reader->curnode == NULL)
2889 return(0);
2890 if (reader->curnode->type == XML_ATTRIBUTE_NODE) {
2891 if (reader->curnode->children == NULL)
2892 return(0);
2893 reader->curnode = reader->curnode->children;
2894 } else if (reader->curnode->type == XML_NAMESPACE_DECL) {
2895 xmlNsPtr ns = (xmlNsPtr) reader->curnode;
2896
2897 if (reader->faketext == NULL) {
2898 reader->faketext = xmlNewDocText(reader->node->doc,
2899 ns->href);
2900 } else {
2901 if ((reader->faketext->content != NULL) &&
2902 (reader->faketext->content !=
2903 (xmlChar *) &(reader->faketext->properties)))
2904 xmlFree(reader->faketext->content);
2905 reader->faketext->content = xmlStrdup(ns->href);
2906 }
2907 reader->curnode = reader->faketext;
2908 } else {
2909 if (reader->curnode->next == NULL)
2910 return(0);
2911 reader->curnode = reader->curnode->next;
2912 }
2913 return(1);
2914 }
2915
2916 /**
2917 * xmlTextReaderConstEncoding:
2918 * @reader: the xmlTextReaderPtr used
2919 *
2920 * Determine the encoding of the document being read.
2921 *
2922 * Returns a string containing the encoding of the document or NULL in
2923 * case of error. The string is deallocated with the reader.
2924 */
2925 const xmlChar *
xmlTextReaderConstEncoding(xmlTextReaderPtr reader)2926 xmlTextReaderConstEncoding(xmlTextReaderPtr reader) {
2927 xmlDocPtr doc = NULL;
2928 if (reader == NULL)
2929 return(NULL);
2930 if (reader->doc != NULL)
2931 doc = reader->doc;
2932 else if (reader->ctxt != NULL)
2933 doc = reader->ctxt->myDoc;
2934 if (doc == NULL)
2935 return(NULL);
2936
2937 if (doc->encoding == NULL)
2938 return(NULL);
2939 else
2940 return(CONSTSTR(doc->encoding));
2941 }
2942
2943
2944 /************************************************************************
2945 * *
2946 * Acces API to the current node *
2947 * *
2948 ************************************************************************/
2949 /**
2950 * xmlTextReaderAttributeCount:
2951 * @reader: the xmlTextReaderPtr used
2952 *
2953 * Provides the number of attributes of the current node
2954 *
2955 * Returns 0 i no attributes, -1 in case of error or the attribute count
2956 */
2957 int
xmlTextReaderAttributeCount(xmlTextReaderPtr reader)2958 xmlTextReaderAttributeCount(xmlTextReaderPtr reader) {
2959 int ret;
2960 xmlAttrPtr attr;
2961 xmlNsPtr ns;
2962 xmlNodePtr node;
2963
2964 if (reader == NULL)
2965 return(-1);
2966 if (reader->node == NULL)
2967 return(0);
2968
2969 if (reader->curnode != NULL)
2970 node = reader->curnode;
2971 else
2972 node = reader->node;
2973
2974 if (node->type != XML_ELEMENT_NODE)
2975 return(0);
2976 if ((reader->state == XML_TEXTREADER_END) ||
2977 (reader->state == XML_TEXTREADER_BACKTRACK))
2978 return(0);
2979 ret = 0;
2980 attr = node->properties;
2981 while (attr != NULL) {
2982 ret++;
2983 attr = attr->next;
2984 }
2985 ns = node->nsDef;
2986 while (ns != NULL) {
2987 ret++;
2988 ns = ns->next;
2989 }
2990 return(ret);
2991 }
2992
2993 /**
2994 * xmlTextReaderNodeType:
2995 * @reader: the xmlTextReaderPtr used
2996 *
2997 * Get the node type of the current node
2998 * Reference:
2999 * http://www.gnu.org/software/dotgnu/pnetlib-doc/System/Xml/XmlNodeType.html
3000 *
3001 * Returns the xmlNodeType of the current node or -1 in case of error
3002 */
3003 int
xmlTextReaderNodeType(xmlTextReaderPtr reader)3004 xmlTextReaderNodeType(xmlTextReaderPtr reader) {
3005 xmlNodePtr node;
3006
3007 if (reader == NULL)
3008 return(-1);
3009 if (reader->node == NULL)
3010 return(XML_READER_TYPE_NONE);
3011 if (reader->curnode != NULL)
3012 node = reader->curnode;
3013 else
3014 node = reader->node;
3015 switch (node->type) {
3016 case XML_ELEMENT_NODE:
3017 if ((reader->state == XML_TEXTREADER_END) ||
3018 (reader->state == XML_TEXTREADER_BACKTRACK))
3019 return(XML_READER_TYPE_END_ELEMENT);
3020 return(XML_READER_TYPE_ELEMENT);
3021 case XML_NAMESPACE_DECL:
3022 case XML_ATTRIBUTE_NODE:
3023 return(XML_READER_TYPE_ATTRIBUTE);
3024 case XML_TEXT_NODE:
3025 if (xmlIsBlankNode(reader->node)) {
3026 if (xmlNodeGetSpacePreserve(reader->node))
3027 return(XML_READER_TYPE_SIGNIFICANT_WHITESPACE);
3028 else
3029 return(XML_READER_TYPE_WHITESPACE);
3030 } else {
3031 return(XML_READER_TYPE_TEXT);
3032 }
3033 case XML_CDATA_SECTION_NODE:
3034 return(XML_READER_TYPE_CDATA);
3035 case XML_ENTITY_REF_NODE:
3036 return(XML_READER_TYPE_ENTITY_REFERENCE);
3037 case XML_ENTITY_NODE:
3038 return(XML_READER_TYPE_ENTITY);
3039 case XML_PI_NODE:
3040 return(XML_READER_TYPE_PROCESSING_INSTRUCTION);
3041 case XML_COMMENT_NODE:
3042 return(XML_READER_TYPE_COMMENT);
3043 case XML_DOCUMENT_NODE:
3044 case XML_HTML_DOCUMENT_NODE:
3045 #ifdef LIBXML_DOCB_ENABLED
3046 case XML_DOCB_DOCUMENT_NODE:
3047 #endif
3048 return(XML_READER_TYPE_DOCUMENT);
3049 case XML_DOCUMENT_FRAG_NODE:
3050 return(XML_READER_TYPE_DOCUMENT_FRAGMENT);
3051 case XML_NOTATION_NODE:
3052 return(XML_READER_TYPE_NOTATION);
3053 case XML_DOCUMENT_TYPE_NODE:
3054 case XML_DTD_NODE:
3055 return(XML_READER_TYPE_DOCUMENT_TYPE);
3056
3057 case XML_ELEMENT_DECL:
3058 case XML_ATTRIBUTE_DECL:
3059 case XML_ENTITY_DECL:
3060 case XML_XINCLUDE_START:
3061 case XML_XINCLUDE_END:
3062 return(XML_READER_TYPE_NONE);
3063 }
3064 return(-1);
3065 }
3066
3067 /**
3068 * xmlTextReaderIsEmptyElement:
3069 * @reader: the xmlTextReaderPtr used
3070 *
3071 * Check if the current node is empty
3072 *
3073 * Returns 1 if empty, 0 if not and -1 in case of error
3074 */
3075 int
xmlTextReaderIsEmptyElement(xmlTextReaderPtr reader)3076 xmlTextReaderIsEmptyElement(xmlTextReaderPtr reader) {
3077 if ((reader == NULL) || (reader->node == NULL))
3078 return(-1);
3079 if (reader->node->type != XML_ELEMENT_NODE)
3080 return(0);
3081 if (reader->curnode != NULL)
3082 return(0);
3083 if (reader->node->children != NULL)
3084 return(0);
3085 if (reader->state == XML_TEXTREADER_END)
3086 return(0);
3087 if (reader->doc != NULL)
3088 return(1);
3089 #ifdef LIBXML_XINCLUDE_ENABLED
3090 if (reader->in_xinclude > 0)
3091 return(1);
3092 #endif
3093 return((reader->node->extra & NODE_IS_EMPTY) != 0);
3094 }
3095
3096 /**
3097 * xmlTextReaderLocalName:
3098 * @reader: the xmlTextReaderPtr used
3099 *
3100 * The local name of the node.
3101 *
3102 * Returns the local name or NULL if not available,
3103 * if non NULL it need to be freed by the caller.
3104 */
3105 xmlChar *
xmlTextReaderLocalName(xmlTextReaderPtr reader)3106 xmlTextReaderLocalName(xmlTextReaderPtr reader) {
3107 xmlNodePtr node;
3108 if ((reader == NULL) || (reader->node == NULL))
3109 return(NULL);
3110 if (reader->curnode != NULL)
3111 node = reader->curnode;
3112 else
3113 node = reader->node;
3114 if (node->type == XML_NAMESPACE_DECL) {
3115 xmlNsPtr ns = (xmlNsPtr) node;
3116 if (ns->prefix == NULL)
3117 return(xmlStrdup(BAD_CAST "xmlns"));
3118 else
3119 return(xmlStrdup(ns->prefix));
3120 }
3121 if ((node->type != XML_ELEMENT_NODE) &&
3122 (node->type != XML_ATTRIBUTE_NODE))
3123 return(xmlTextReaderName(reader));
3124 return(xmlStrdup(node->name));
3125 }
3126
3127 /**
3128 * xmlTextReaderConstLocalName:
3129 * @reader: the xmlTextReaderPtr used
3130 *
3131 * The local name of the node.
3132 *
3133 * Returns the local name or NULL if not available, the
3134 * string will be deallocated with the reader.
3135 */
3136 const xmlChar *
xmlTextReaderConstLocalName(xmlTextReaderPtr reader)3137 xmlTextReaderConstLocalName(xmlTextReaderPtr reader) {
3138 xmlNodePtr node;
3139 if ((reader == NULL) || (reader->node == NULL))
3140 return(NULL);
3141 if (reader->curnode != NULL)
3142 node = reader->curnode;
3143 else
3144 node = reader->node;
3145 if (node->type == XML_NAMESPACE_DECL) {
3146 xmlNsPtr ns = (xmlNsPtr) node;
3147 if (ns->prefix == NULL)
3148 return(CONSTSTR(BAD_CAST "xmlns"));
3149 else
3150 return(ns->prefix);
3151 }
3152 if ((node->type != XML_ELEMENT_NODE) &&
3153 (node->type != XML_ATTRIBUTE_NODE))
3154 return(xmlTextReaderConstName(reader));
3155 return(node->name);
3156 }
3157
3158 /**
3159 * xmlTextReaderName:
3160 * @reader: the xmlTextReaderPtr used
3161 *
3162 * The qualified name of the node, equal to Prefix :LocalName.
3163 *
3164 * Returns the local name or NULL if not available,
3165 * if non NULL it need to be freed by the caller.
3166 */
3167 xmlChar *
xmlTextReaderName(xmlTextReaderPtr reader)3168 xmlTextReaderName(xmlTextReaderPtr reader) {
3169 xmlNodePtr node;
3170 xmlChar *ret;
3171
3172 if ((reader == NULL) || (reader->node == NULL))
3173 return(NULL);
3174 if (reader->curnode != NULL)
3175 node = reader->curnode;
3176 else
3177 node = reader->node;
3178 switch (node->type) {
3179 case XML_ELEMENT_NODE:
3180 case XML_ATTRIBUTE_NODE:
3181 if ((node->ns == NULL) ||
3182 (node->ns->prefix == NULL))
3183 return(xmlStrdup(node->name));
3184
3185 ret = xmlStrdup(node->ns->prefix);
3186 ret = xmlStrcat(ret, BAD_CAST ":");
3187 ret = xmlStrcat(ret, node->name);
3188 return(ret);
3189 case XML_TEXT_NODE:
3190 return(xmlStrdup(BAD_CAST "#text"));
3191 case XML_CDATA_SECTION_NODE:
3192 return(xmlStrdup(BAD_CAST "#cdata-section"));
3193 case XML_ENTITY_NODE:
3194 case XML_ENTITY_REF_NODE:
3195 return(xmlStrdup(node->name));
3196 case XML_PI_NODE:
3197 return(xmlStrdup(node->name));
3198 case XML_COMMENT_NODE:
3199 return(xmlStrdup(BAD_CAST "#comment"));
3200 case XML_DOCUMENT_NODE:
3201 case XML_HTML_DOCUMENT_NODE:
3202 #ifdef LIBXML_DOCB_ENABLED
3203 case XML_DOCB_DOCUMENT_NODE:
3204 #endif
3205 return(xmlStrdup(BAD_CAST "#document"));
3206 case XML_DOCUMENT_FRAG_NODE:
3207 return(xmlStrdup(BAD_CAST "#document-fragment"));
3208 case XML_NOTATION_NODE:
3209 return(xmlStrdup(node->name));
3210 case XML_DOCUMENT_TYPE_NODE:
3211 case XML_DTD_NODE:
3212 return(xmlStrdup(node->name));
3213 case XML_NAMESPACE_DECL: {
3214 xmlNsPtr ns = (xmlNsPtr) node;
3215
3216 ret = xmlStrdup(BAD_CAST "xmlns");
3217 if (ns->prefix == NULL)
3218 return(ret);
3219 ret = xmlStrcat(ret, BAD_CAST ":");
3220 ret = xmlStrcat(ret, ns->prefix);
3221 return(ret);
3222 }
3223
3224 case XML_ELEMENT_DECL:
3225 case XML_ATTRIBUTE_DECL:
3226 case XML_ENTITY_DECL:
3227 case XML_XINCLUDE_START:
3228 case XML_XINCLUDE_END:
3229 return(NULL);
3230 }
3231 return(NULL);
3232 }
3233
3234 /**
3235 * xmlTextReaderConstName:
3236 * @reader: the xmlTextReaderPtr used
3237 *
3238 * The qualified name of the node, equal to Prefix :LocalName.
3239 *
3240 * Returns the local name or NULL if not available, the string is
3241 * deallocated with the reader.
3242 */
3243 const xmlChar *
xmlTextReaderConstName(xmlTextReaderPtr reader)3244 xmlTextReaderConstName(xmlTextReaderPtr reader) {
3245 xmlNodePtr node;
3246
3247 if ((reader == NULL) || (reader->node == NULL))
3248 return(NULL);
3249 if (reader->curnode != NULL)
3250 node = reader->curnode;
3251 else
3252 node = reader->node;
3253 switch (node->type) {
3254 case XML_ELEMENT_NODE:
3255 case XML_ATTRIBUTE_NODE:
3256 if ((node->ns == NULL) ||
3257 (node->ns->prefix == NULL))
3258 return(node->name);
3259 return(CONSTQSTR(node->ns->prefix, node->name));
3260 case XML_TEXT_NODE:
3261 return(CONSTSTR(BAD_CAST "#text"));
3262 case XML_CDATA_SECTION_NODE:
3263 return(CONSTSTR(BAD_CAST "#cdata-section"));
3264 case XML_ENTITY_NODE:
3265 case XML_ENTITY_REF_NODE:
3266 return(CONSTSTR(node->name));
3267 case XML_PI_NODE:
3268 return(CONSTSTR(node->name));
3269 case XML_COMMENT_NODE:
3270 return(CONSTSTR(BAD_CAST "#comment"));
3271 case XML_DOCUMENT_NODE:
3272 case XML_HTML_DOCUMENT_NODE:
3273 #ifdef LIBXML_DOCB_ENABLED
3274 case XML_DOCB_DOCUMENT_NODE:
3275 #endif
3276 return(CONSTSTR(BAD_CAST "#document"));
3277 case XML_DOCUMENT_FRAG_NODE:
3278 return(CONSTSTR(BAD_CAST "#document-fragment"));
3279 case XML_NOTATION_NODE:
3280 return(CONSTSTR(node->name));
3281 case XML_DOCUMENT_TYPE_NODE:
3282 case XML_DTD_NODE:
3283 return(CONSTSTR(node->name));
3284 case XML_NAMESPACE_DECL: {
3285 xmlNsPtr ns = (xmlNsPtr) node;
3286
3287 if (ns->prefix == NULL)
3288 return(CONSTSTR(BAD_CAST "xmlns"));
3289 return(CONSTQSTR(BAD_CAST "xmlns", ns->prefix));
3290 }
3291
3292 case XML_ELEMENT_DECL:
3293 case XML_ATTRIBUTE_DECL:
3294 case XML_ENTITY_DECL:
3295 case XML_XINCLUDE_START:
3296 case XML_XINCLUDE_END:
3297 return(NULL);
3298 }
3299 return(NULL);
3300 }
3301
3302 /**
3303 * xmlTextReaderPrefix:
3304 * @reader: the xmlTextReaderPtr used
3305 *
3306 * A shorthand reference to the namespace associated with the node.
3307 *
3308 * Returns the prefix or NULL if not available,
3309 * if non NULL it need to be freed by the caller.
3310 */
3311 xmlChar *
xmlTextReaderPrefix(xmlTextReaderPtr reader)3312 xmlTextReaderPrefix(xmlTextReaderPtr reader) {
3313 xmlNodePtr node;
3314 if ((reader == NULL) || (reader->node == NULL))
3315 return(NULL);
3316 if (reader->curnode != NULL)
3317 node = reader->curnode;
3318 else
3319 node = reader->node;
3320 if (node->type == XML_NAMESPACE_DECL) {
3321 xmlNsPtr ns = (xmlNsPtr) node;
3322 if (ns->prefix == NULL)
3323 return(NULL);
3324 return(xmlStrdup(BAD_CAST "xmlns"));
3325 }
3326 if ((node->type != XML_ELEMENT_NODE) &&
3327 (node->type != XML_ATTRIBUTE_NODE))
3328 return(NULL);
3329 if ((node->ns != NULL) && (node->ns->prefix != NULL))
3330 return(xmlStrdup(node->ns->prefix));
3331 return(NULL);
3332 }
3333
3334 /**
3335 * xmlTextReaderConstPrefix:
3336 * @reader: the xmlTextReaderPtr used
3337 *
3338 * A shorthand reference to the namespace associated with the node.
3339 *
3340 * Returns the prefix or NULL if not available, the string is deallocated
3341 * with the reader.
3342 */
3343 const xmlChar *
xmlTextReaderConstPrefix(xmlTextReaderPtr reader)3344 xmlTextReaderConstPrefix(xmlTextReaderPtr reader) {
3345 xmlNodePtr node;
3346 if ((reader == NULL) || (reader->node == NULL))
3347 return(NULL);
3348 if (reader->curnode != NULL)
3349 node = reader->curnode;
3350 else
3351 node = reader->node;
3352 if (node->type == XML_NAMESPACE_DECL) {
3353 xmlNsPtr ns = (xmlNsPtr) node;
3354 if (ns->prefix == NULL)
3355 return(NULL);
3356 return(CONSTSTR(BAD_CAST "xmlns"));
3357 }
3358 if ((node->type != XML_ELEMENT_NODE) &&
3359 (node->type != XML_ATTRIBUTE_NODE))
3360 return(NULL);
3361 if ((node->ns != NULL) && (node->ns->prefix != NULL))
3362 return(CONSTSTR(node->ns->prefix));
3363 return(NULL);
3364 }
3365
3366 /**
3367 * xmlTextReaderNamespaceUri:
3368 * @reader: the xmlTextReaderPtr used
3369 *
3370 * The URI defining the namespace associated with the node.
3371 *
3372 * Returns the namespace URI or NULL if not available,
3373 * if non NULL it need to be freed by the caller.
3374 */
3375 xmlChar *
xmlTextReaderNamespaceUri(xmlTextReaderPtr reader)3376 xmlTextReaderNamespaceUri(xmlTextReaderPtr reader) {
3377 xmlNodePtr node;
3378 if ((reader == NULL) || (reader->node == NULL))
3379 return(NULL);
3380 if (reader->curnode != NULL)
3381 node = reader->curnode;
3382 else
3383 node = reader->node;
3384 if (node->type == XML_NAMESPACE_DECL)
3385 return(xmlStrdup(BAD_CAST "http://www.w3.org/2000/xmlns/"));
3386 if ((node->type != XML_ELEMENT_NODE) &&
3387 (node->type != XML_ATTRIBUTE_NODE))
3388 return(NULL);
3389 if (node->ns != NULL)
3390 return(xmlStrdup(node->ns->href));
3391 return(NULL);
3392 }
3393
3394 /**
3395 * xmlTextReaderConstNamespaceUri:
3396 * @reader: the xmlTextReaderPtr used
3397 *
3398 * The URI defining the namespace associated with the node.
3399 *
3400 * Returns the namespace URI or NULL if not available, the string
3401 * will be deallocated with the reader
3402 */
3403 const xmlChar *
xmlTextReaderConstNamespaceUri(xmlTextReaderPtr reader)3404 xmlTextReaderConstNamespaceUri(xmlTextReaderPtr reader) {
3405 xmlNodePtr node;
3406 if ((reader == NULL) || (reader->node == NULL))
3407 return(NULL);
3408 if (reader->curnode != NULL)
3409 node = reader->curnode;
3410 else
3411 node = reader->node;
3412 if (node->type == XML_NAMESPACE_DECL)
3413 return(CONSTSTR(BAD_CAST "http://www.w3.org/2000/xmlns/"));
3414 if ((node->type != XML_ELEMENT_NODE) &&
3415 (node->type != XML_ATTRIBUTE_NODE))
3416 return(NULL);
3417 if (node->ns != NULL)
3418 return(CONSTSTR(node->ns->href));
3419 return(NULL);
3420 }
3421
3422 /**
3423 * xmlTextReaderBaseUri:
3424 * @reader: the xmlTextReaderPtr used
3425 *
3426 * The base URI of the node.
3427 *
3428 * Returns the base URI or NULL if not available,
3429 * if non NULL it need to be freed by the caller.
3430 */
3431 xmlChar *
xmlTextReaderBaseUri(xmlTextReaderPtr reader)3432 xmlTextReaderBaseUri(xmlTextReaderPtr reader) {
3433 if ((reader == NULL) || (reader->node == NULL))
3434 return(NULL);
3435 return(xmlNodeGetBase(NULL, reader->node));
3436 }
3437
3438 /**
3439 * xmlTextReaderConstBaseUri:
3440 * @reader: the xmlTextReaderPtr used
3441 *
3442 * The base URI of the node.
3443 *
3444 * Returns the base URI or NULL if not available, the string
3445 * will be deallocated with the reader
3446 */
3447 const xmlChar *
xmlTextReaderConstBaseUri(xmlTextReaderPtr reader)3448 xmlTextReaderConstBaseUri(xmlTextReaderPtr reader) {
3449 xmlChar *tmp;
3450 const xmlChar *ret;
3451
3452 if ((reader == NULL) || (reader->node == NULL))
3453 return(NULL);
3454 tmp = xmlNodeGetBase(NULL, reader->node);
3455 if (tmp == NULL)
3456 return(NULL);
3457 ret = CONSTSTR(tmp);
3458 xmlFree(tmp);
3459 return(ret);
3460 }
3461
3462 /**
3463 * xmlTextReaderDepth:
3464 * @reader: the xmlTextReaderPtr used
3465 *
3466 * The depth of the node in the tree.
3467 *
3468 * Returns the depth or -1 in case of error
3469 */
3470 int
xmlTextReaderDepth(xmlTextReaderPtr reader)3471 xmlTextReaderDepth(xmlTextReaderPtr reader) {
3472 if (reader == NULL)
3473 return(-1);
3474 if (reader->node == NULL)
3475 return(0);
3476
3477 if (reader->curnode != NULL) {
3478 if ((reader->curnode->type == XML_ATTRIBUTE_NODE) ||
3479 (reader->curnode->type == XML_NAMESPACE_DECL))
3480 return(reader->depth + 1);
3481 return(reader->depth + 2);
3482 }
3483 return(reader->depth);
3484 }
3485
3486 /**
3487 * xmlTextReaderHasAttributes:
3488 * @reader: the xmlTextReaderPtr used
3489 *
3490 * Whether the node has attributes.
3491 *
3492 * Returns 1 if true, 0 if false, and -1 in case or error
3493 */
3494 int
xmlTextReaderHasAttributes(xmlTextReaderPtr reader)3495 xmlTextReaderHasAttributes(xmlTextReaderPtr reader) {
3496 xmlNodePtr node;
3497 if (reader == NULL)
3498 return(-1);
3499 if (reader->node == NULL)
3500 return(0);
3501 if (reader->curnode != NULL)
3502 node = reader->curnode;
3503 else
3504 node = reader->node;
3505
3506 if ((node->type == XML_ELEMENT_NODE) &&
3507 ((node->properties != NULL) || (node->nsDef != NULL)))
3508 return(1);
3509 /* TODO: handle the xmlDecl */
3510 return(0);
3511 }
3512
3513 /**
3514 * xmlTextReaderHasValue:
3515 * @reader: the xmlTextReaderPtr used
3516 *
3517 * Whether the node can have a text value.
3518 *
3519 * Returns 1 if true, 0 if false, and -1 in case or error
3520 */
3521 int
xmlTextReaderHasValue(xmlTextReaderPtr reader)3522 xmlTextReaderHasValue(xmlTextReaderPtr reader) {
3523 xmlNodePtr node;
3524 if (reader == NULL)
3525 return(-1);
3526 if (reader->node == NULL)
3527 return(0);
3528 if (reader->curnode != NULL)
3529 node = reader->curnode;
3530 else
3531 node = reader->node;
3532
3533 switch (node->type) {
3534 case XML_ATTRIBUTE_NODE:
3535 case XML_TEXT_NODE:
3536 case XML_CDATA_SECTION_NODE:
3537 case XML_PI_NODE:
3538 case XML_COMMENT_NODE:
3539 case XML_NAMESPACE_DECL:
3540 return(1);
3541 default:
3542 break;
3543 }
3544 return(0);
3545 }
3546
3547 /**
3548 * xmlTextReaderValue:
3549 * @reader: the xmlTextReaderPtr used
3550 *
3551 * Provides the text value of the node if present
3552 *
3553 * Returns the string or NULL if not available. The result must be deallocated
3554 * with xmlFree()
3555 */
3556 xmlChar *
xmlTextReaderValue(xmlTextReaderPtr reader)3557 xmlTextReaderValue(xmlTextReaderPtr reader) {
3558 xmlNodePtr node;
3559 if (reader == NULL)
3560 return(NULL);
3561 if (reader->node == NULL)
3562 return(NULL);
3563 if (reader->curnode != NULL)
3564 node = reader->curnode;
3565 else
3566 node = reader->node;
3567
3568 switch (node->type) {
3569 case XML_NAMESPACE_DECL:
3570 return(xmlStrdup(((xmlNsPtr) node)->href));
3571 case XML_ATTRIBUTE_NODE:{
3572 xmlAttrPtr attr = (xmlAttrPtr) node;
3573
3574 if (attr->parent != NULL)
3575 return (xmlNodeListGetString
3576 (attr->parent->doc, attr->children, 1));
3577 else
3578 return (xmlNodeListGetString(NULL, attr->children, 1));
3579 break;
3580 }
3581 case XML_TEXT_NODE:
3582 case XML_CDATA_SECTION_NODE:
3583 case XML_PI_NODE:
3584 case XML_COMMENT_NODE:
3585 if (node->content != NULL)
3586 return (xmlStrdup(node->content));
3587 default:
3588 break;
3589 }
3590 return(NULL);
3591 }
3592
3593 /**
3594 * xmlTextReaderConstValue:
3595 * @reader: the xmlTextReaderPtr used
3596 *
3597 * Provides the text value of the node if present
3598 *
3599 * Returns the string or NULL if not available. The result will be
3600 * deallocated on the next Read() operation.
3601 */
3602 const xmlChar *
xmlTextReaderConstValue(xmlTextReaderPtr reader)3603 xmlTextReaderConstValue(xmlTextReaderPtr reader) {
3604 xmlNodePtr node;
3605 if (reader == NULL)
3606 return(NULL);
3607 if (reader->node == NULL)
3608 return(NULL);
3609 if (reader->curnode != NULL)
3610 node = reader->curnode;
3611 else
3612 node = reader->node;
3613
3614 switch (node->type) {
3615 case XML_NAMESPACE_DECL:
3616 return(((xmlNsPtr) node)->href);
3617 case XML_ATTRIBUTE_NODE:{
3618 xmlAttrPtr attr = (xmlAttrPtr) node;
3619
3620 if ((attr->children != NULL) &&
3621 (attr->children->type == XML_TEXT_NODE) &&
3622 (attr->children->next == NULL))
3623 return(attr->children->content);
3624 else {
3625 if (reader->buffer == NULL) {
3626 reader->buffer = xmlBufCreateSize(100);
3627 if (reader->buffer == NULL) {
3628 xmlGenericError(xmlGenericErrorContext,
3629 "xmlTextReaderSetup : malloc failed\n");
3630 return (NULL);
3631 }
3632 } else
3633 xmlBufEmpty(reader->buffer);
3634 xmlBufGetNodeContent(reader->buffer, node);
3635 return(xmlBufContent(reader->buffer));
3636 }
3637 break;
3638 }
3639 case XML_TEXT_NODE:
3640 case XML_CDATA_SECTION_NODE:
3641 case XML_PI_NODE:
3642 case XML_COMMENT_NODE:
3643 return(node->content);
3644 default:
3645 break;
3646 }
3647 return(NULL);
3648 }
3649
3650 /**
3651 * xmlTextReaderIsDefault:
3652 * @reader: the xmlTextReaderPtr used
3653 *
3654 * Whether an Attribute node was generated from the default value
3655 * defined in the DTD or schema.
3656 *
3657 * Returns 0 if not defaulted, 1 if defaulted, and -1 in case of error
3658 */
3659 int
xmlTextReaderIsDefault(xmlTextReaderPtr reader)3660 xmlTextReaderIsDefault(xmlTextReaderPtr reader) {
3661 if (reader == NULL)
3662 return(-1);
3663 return(0);
3664 }
3665
3666 /**
3667 * xmlTextReaderQuoteChar:
3668 * @reader: the xmlTextReaderPtr used
3669 *
3670 * The quotation mark character used to enclose the value of an attribute.
3671 *
3672 * Returns " or ' and -1 in case of error
3673 */
3674 int
xmlTextReaderQuoteChar(xmlTextReaderPtr reader)3675 xmlTextReaderQuoteChar(xmlTextReaderPtr reader) {
3676 if (reader == NULL)
3677 return(-1);
3678 /* TODO maybe lookup the attribute value for " first */
3679 return((int) '"');
3680 }
3681
3682 /**
3683 * xmlTextReaderXmlLang:
3684 * @reader: the xmlTextReaderPtr used
3685 *
3686 * The xml:lang scope within which the node resides.
3687 *
3688 * Returns the xml:lang value or NULL if none exists.,
3689 * if non NULL it need to be freed by the caller.
3690 */
3691 xmlChar *
xmlTextReaderXmlLang(xmlTextReaderPtr reader)3692 xmlTextReaderXmlLang(xmlTextReaderPtr reader) {
3693 if (reader == NULL)
3694 return(NULL);
3695 if (reader->node == NULL)
3696 return(NULL);
3697 return(xmlNodeGetLang(reader->node));
3698 }
3699
3700 /**
3701 * xmlTextReaderConstXmlLang:
3702 * @reader: the xmlTextReaderPtr used
3703 *
3704 * The xml:lang scope within which the node resides.
3705 *
3706 * Returns the xml:lang value or NULL if none exists.
3707 */
3708 const xmlChar *
xmlTextReaderConstXmlLang(xmlTextReaderPtr reader)3709 xmlTextReaderConstXmlLang(xmlTextReaderPtr reader) {
3710 xmlChar *tmp;
3711 const xmlChar *ret;
3712
3713 if (reader == NULL)
3714 return(NULL);
3715 if (reader->node == NULL)
3716 return(NULL);
3717 tmp = xmlNodeGetLang(reader->node);
3718 if (tmp == NULL)
3719 return(NULL);
3720 ret = CONSTSTR(tmp);
3721 xmlFree(tmp);
3722 return(ret);
3723 }
3724
3725 /**
3726 * xmlTextReaderConstString:
3727 * @reader: the xmlTextReaderPtr used
3728 * @str: the string to intern.
3729 *
3730 * Get an interned string from the reader, allows for example to
3731 * speedup string name comparisons
3732 *
3733 * Returns an interned copy of the string or NULL in case of error. The
3734 * string will be deallocated with the reader.
3735 */
3736 const xmlChar *
xmlTextReaderConstString(xmlTextReaderPtr reader,const xmlChar * str)3737 xmlTextReaderConstString(xmlTextReaderPtr reader, const xmlChar *str) {
3738 if (reader == NULL)
3739 return(NULL);
3740 return(CONSTSTR(str));
3741 }
3742
3743 /**
3744 * xmlTextReaderNormalization:
3745 * @reader: the xmlTextReaderPtr used
3746 *
3747 * The value indicating whether to normalize white space and attribute values.
3748 * Since attribute value and end of line normalizations are a MUST in the XML
3749 * specification only the value true is accepted. The broken bahaviour of
3750 * accepting out of range character entities like � is of course not
3751 * supported either.
3752 *
3753 * Returns 1 or -1 in case of error.
3754 */
3755 int
xmlTextReaderNormalization(xmlTextReaderPtr reader)3756 xmlTextReaderNormalization(xmlTextReaderPtr reader) {
3757 if (reader == NULL)
3758 return(-1);
3759 return(1);
3760 }
3761
3762 /************************************************************************
3763 * *
3764 * Extensions to the base APIs *
3765 * *
3766 ************************************************************************/
3767
3768 /**
3769 * xmlTextReaderSetParserProp:
3770 * @reader: the xmlTextReaderPtr used
3771 * @prop: the xmlParserProperties to set
3772 * @value: usually 0 or 1 to (de)activate it
3773 *
3774 * Change the parser processing behaviour by changing some of its internal
3775 * properties. Note that some properties can only be changed before any
3776 * read has been done.
3777 *
3778 * Returns 0 if the call was successful, or -1 in case of error
3779 */
3780 int
xmlTextReaderSetParserProp(xmlTextReaderPtr reader,int prop,int value)3781 xmlTextReaderSetParserProp(xmlTextReaderPtr reader, int prop, int value) {
3782 xmlParserProperties p = (xmlParserProperties) prop;
3783 xmlParserCtxtPtr ctxt;
3784
3785 if ((reader == NULL) || (reader->ctxt == NULL))
3786 return(-1);
3787 ctxt = reader->ctxt;
3788
3789 switch (p) {
3790 case XML_PARSER_LOADDTD:
3791 if (value != 0) {
3792 if (ctxt->loadsubset == 0) {
3793 if (reader->mode != XML_TEXTREADER_MODE_INITIAL)
3794 return(-1);
3795 ctxt->loadsubset = XML_DETECT_IDS;
3796 }
3797 } else {
3798 ctxt->loadsubset = 0;
3799 }
3800 return(0);
3801 case XML_PARSER_DEFAULTATTRS:
3802 if (value != 0) {
3803 ctxt->loadsubset |= XML_COMPLETE_ATTRS;
3804 } else {
3805 if (ctxt->loadsubset & XML_COMPLETE_ATTRS)
3806 ctxt->loadsubset -= XML_COMPLETE_ATTRS;
3807 }
3808 return(0);
3809 case XML_PARSER_VALIDATE:
3810 if (value != 0) {
3811 ctxt->validate = 1;
3812 reader->validate = XML_TEXTREADER_VALIDATE_DTD;
3813 } else {
3814 ctxt->validate = 0;
3815 }
3816 return(0);
3817 case XML_PARSER_SUBST_ENTITIES:
3818 if (value != 0) {
3819 ctxt->replaceEntities = 1;
3820 } else {
3821 ctxt->replaceEntities = 0;
3822 }
3823 return(0);
3824 }
3825 return(-1);
3826 }
3827
3828 /**
3829 * xmlTextReaderGetParserProp:
3830 * @reader: the xmlTextReaderPtr used
3831 * @prop: the xmlParserProperties to get
3832 *
3833 * Read the parser internal property.
3834 *
3835 * Returns the value, usually 0 or 1, or -1 in case of error.
3836 */
3837 int
xmlTextReaderGetParserProp(xmlTextReaderPtr reader,int prop)3838 xmlTextReaderGetParserProp(xmlTextReaderPtr reader, int prop) {
3839 xmlParserProperties p = (xmlParserProperties) prop;
3840 xmlParserCtxtPtr ctxt;
3841
3842 if ((reader == NULL) || (reader->ctxt == NULL))
3843 return(-1);
3844 ctxt = reader->ctxt;
3845
3846 switch (p) {
3847 case XML_PARSER_LOADDTD:
3848 if ((ctxt->loadsubset != 0) || (ctxt->validate != 0))
3849 return(1);
3850 return(0);
3851 case XML_PARSER_DEFAULTATTRS:
3852 if (ctxt->loadsubset & XML_COMPLETE_ATTRS)
3853 return(1);
3854 return(0);
3855 case XML_PARSER_VALIDATE:
3856 return(reader->validate);
3857 case XML_PARSER_SUBST_ENTITIES:
3858 return(ctxt->replaceEntities);
3859 }
3860 return(-1);
3861 }
3862
3863
3864 /**
3865 * xmlTextReaderGetParserLineNumber:
3866 * @reader: the user data (XML reader context)
3867 *
3868 * Provide the line number of the current parsing point.
3869 *
3870 * Returns an int or 0 if not available
3871 */
3872 int
xmlTextReaderGetParserLineNumber(xmlTextReaderPtr reader)3873 xmlTextReaderGetParserLineNumber(xmlTextReaderPtr reader)
3874 {
3875 if ((reader == NULL) || (reader->ctxt == NULL) ||
3876 (reader->ctxt->input == NULL)) {
3877 return (0);
3878 }
3879 return (reader->ctxt->input->line);
3880 }
3881
3882 /**
3883 * xmlTextReaderGetParserColumnNumber:
3884 * @reader: the user data (XML reader context)
3885 *
3886 * Provide the column number of the current parsing point.
3887 *
3888 * Returns an int or 0 if not available
3889 */
3890 int
xmlTextReaderGetParserColumnNumber(xmlTextReaderPtr reader)3891 xmlTextReaderGetParserColumnNumber(xmlTextReaderPtr reader)
3892 {
3893 if ((reader == NULL) || (reader->ctxt == NULL) ||
3894 (reader->ctxt->input == NULL)) {
3895 return (0);
3896 }
3897 return (reader->ctxt->input->col);
3898 }
3899
3900 /**
3901 * xmlTextReaderCurrentNode:
3902 * @reader: the xmlTextReaderPtr used
3903 *
3904 * Hacking interface allowing to get the xmlNodePtr correponding to the
3905 * current node being accessed by the xmlTextReader. This is dangerous
3906 * because the underlying node may be destroyed on the next Reads.
3907 *
3908 * Returns the xmlNodePtr or NULL in case of error.
3909 */
3910 xmlNodePtr
xmlTextReaderCurrentNode(xmlTextReaderPtr reader)3911 xmlTextReaderCurrentNode(xmlTextReaderPtr reader) {
3912 if (reader == NULL)
3913 return(NULL);
3914
3915 if (reader->curnode != NULL)
3916 return(reader->curnode);
3917 return(reader->node);
3918 }
3919
3920 /**
3921 * xmlTextReaderPreserve:
3922 * @reader: the xmlTextReaderPtr used
3923 *
3924 * This tells the XML Reader to preserve the current node.
3925 * The caller must also use xmlTextReaderCurrentDoc() to
3926 * keep an handle on the resulting document once parsing has finished
3927 *
3928 * Returns the xmlNodePtr or NULL in case of error.
3929 */
3930 xmlNodePtr
xmlTextReaderPreserve(xmlTextReaderPtr reader)3931 xmlTextReaderPreserve(xmlTextReaderPtr reader) {
3932 xmlNodePtr cur, parent;
3933
3934 if (reader == NULL)
3935 return(NULL);
3936
3937 if (reader->curnode != NULL)
3938 cur = reader->curnode;
3939 else
3940 cur = reader->node;
3941 if (cur == NULL)
3942 return(NULL);
3943
3944 if ((cur->type != XML_DOCUMENT_NODE) && (cur->type != XML_DTD_NODE)) {
3945 cur->extra |= NODE_IS_PRESERVED;
3946 cur->extra |= NODE_IS_SPRESERVED;
3947 }
3948 reader->preserves++;
3949
3950 parent = cur->parent;;
3951 while (parent != NULL) {
3952 if (parent->type == XML_ELEMENT_NODE)
3953 parent->extra |= NODE_IS_PRESERVED;
3954 parent = parent->parent;
3955 }
3956 return(cur);
3957 }
3958
3959 #ifdef LIBXML_PATTERN_ENABLED
3960 /**
3961 * xmlTextReaderPreservePattern:
3962 * @reader: the xmlTextReaderPtr used
3963 * @pattern: an XPath subset pattern
3964 * @namespaces: the prefix definitions, array of [URI, prefix] or NULL
3965 *
3966 * This tells the XML Reader to preserve all nodes matched by the
3967 * pattern. The caller must also use xmlTextReaderCurrentDoc() to
3968 * keep an handle on the resulting document once parsing has finished
3969 *
3970 * Returns a positive number in case of success and -1 in case of error
3971 */
3972 int
xmlTextReaderPreservePattern(xmlTextReaderPtr reader,const xmlChar * pattern,const xmlChar ** namespaces)3973 xmlTextReaderPreservePattern(xmlTextReaderPtr reader, const xmlChar *pattern,
3974 const xmlChar **namespaces)
3975 {
3976 xmlPatternPtr comp;
3977
3978 if ((reader == NULL) || (pattern == NULL))
3979 return(-1);
3980
3981 comp = xmlPatterncompile(pattern, reader->dict, 0, namespaces);
3982 if (comp == NULL)
3983 return(-1);
3984
3985 if (reader->patternMax <= 0) {
3986 reader->patternMax = 4;
3987 reader->patternTab = (xmlPatternPtr *) xmlMalloc(reader->patternMax *
3988 sizeof(reader->patternTab[0]));
3989 if (reader->patternTab == NULL) {
3990 xmlGenericError(xmlGenericErrorContext, "xmlMalloc failed !\n");
3991 return (-1);
3992 }
3993 }
3994 if (reader->patternNr >= reader->patternMax) {
3995 xmlPatternPtr *tmp;
3996 reader->patternMax *= 2;
3997 tmp = (xmlPatternPtr *) xmlRealloc(reader->patternTab,
3998 reader->patternMax *
3999 sizeof(reader->patternTab[0]));
4000 if (tmp == NULL) {
4001 xmlGenericError(xmlGenericErrorContext, "xmlRealloc failed !\n");
4002 reader->patternMax /= 2;
4003 return (-1);
4004 }
4005 reader->patternTab = tmp;
4006 }
4007 reader->patternTab[reader->patternNr] = comp;
4008 return(reader->patternNr++);
4009 }
4010 #endif
4011
4012 /**
4013 * xmlTextReaderCurrentDoc:
4014 * @reader: the xmlTextReaderPtr used
4015 *
4016 * Hacking interface allowing to get the xmlDocPtr correponding to the
4017 * current document being accessed by the xmlTextReader.
4018 * NOTE: as a result of this call, the reader will not destroy the
4019 * associated XML document and calling xmlFreeDoc() on the result
4020 * is needed once the reader parsing has finished.
4021 *
4022 * Returns the xmlDocPtr or NULL in case of error.
4023 */
4024 xmlDocPtr
xmlTextReaderCurrentDoc(xmlTextReaderPtr reader)4025 xmlTextReaderCurrentDoc(xmlTextReaderPtr reader) {
4026 if (reader == NULL)
4027 return(NULL);
4028 if (reader->doc != NULL)
4029 return(reader->doc);
4030 if ((reader->ctxt == NULL) || (reader->ctxt->myDoc == NULL))
4031 return(NULL);
4032
4033 reader->preserve = 1;
4034 return(reader->ctxt->myDoc);
4035 }
4036
4037 #ifdef LIBXML_SCHEMAS_ENABLED
4038 static char *xmlTextReaderBuildMessage(const char *msg, va_list ap);
4039
4040 static void XMLCDECL
4041 xmlTextReaderValidityError(void *ctxt, const char *msg, ...);
4042
4043 static void XMLCDECL
4044 xmlTextReaderValidityWarning(void *ctxt, const char *msg, ...);
4045
4046 static void XMLCDECL
xmlTextReaderValidityErrorRelay(void * ctx,const char * msg,...)4047 xmlTextReaderValidityErrorRelay(void *ctx, const char *msg, ...)
4048 {
4049 xmlTextReaderPtr reader = (xmlTextReaderPtr) ctx;
4050
4051 char *str;
4052
4053 va_list ap;
4054
4055 va_start(ap, msg);
4056 str = xmlTextReaderBuildMessage(msg, ap);
4057 if (!reader->errorFunc) {
4058 xmlTextReaderValidityError(ctx, "%s", str);
4059 } else {
4060 reader->errorFunc(reader->errorFuncArg, str,
4061 XML_PARSER_SEVERITY_VALIDITY_ERROR,
4062 NULL /* locator */ );
4063 }
4064 if (str != NULL)
4065 xmlFree(str);
4066 va_end(ap);
4067 }
4068
4069 static void XMLCDECL
xmlTextReaderValidityWarningRelay(void * ctx,const char * msg,...)4070 xmlTextReaderValidityWarningRelay(void *ctx, const char *msg, ...)
4071 {
4072 xmlTextReaderPtr reader = (xmlTextReaderPtr) ctx;
4073
4074 char *str;
4075
4076 va_list ap;
4077
4078 va_start(ap, msg);
4079 str = xmlTextReaderBuildMessage(msg, ap);
4080 if (!reader->errorFunc) {
4081 xmlTextReaderValidityWarning(ctx, "%s", str);
4082 } else {
4083 reader->errorFunc(reader->errorFuncArg, str,
4084 XML_PARSER_SEVERITY_VALIDITY_WARNING,
4085 NULL /* locator */ );
4086 }
4087 if (str != NULL)
4088 xmlFree(str);
4089 va_end(ap);
4090 }
4091
4092 static void
4093 xmlTextReaderStructuredError(void *ctxt, xmlErrorPtr error);
4094
4095 static void
xmlTextReaderValidityStructuredRelay(void * userData,xmlErrorPtr error)4096 xmlTextReaderValidityStructuredRelay(void *userData, xmlErrorPtr error)
4097 {
4098 xmlTextReaderPtr reader = (xmlTextReaderPtr) userData;
4099
4100 if (reader->sErrorFunc) {
4101 reader->sErrorFunc(reader->errorFuncArg, error);
4102 } else {
4103 xmlTextReaderStructuredError(reader, error);
4104 }
4105 }
4106 /**
4107 * xmlTextReaderRelaxNGSetSchema:
4108 * @reader: the xmlTextReaderPtr used
4109 * @schema: a precompiled RelaxNG schema
4110 *
4111 * Use RelaxNG to validate the document as it is processed.
4112 * Activation is only possible before the first Read().
4113 * if @schema is NULL, then RelaxNG validation is desactivated.
4114 @ The @schema should not be freed until the reader is deallocated
4115 * or its use has been deactivated.
4116 *
4117 * Returns 0 in case the RelaxNG validation could be (des)activated and
4118 * -1 in case of error.
4119 */
4120 int
xmlTextReaderRelaxNGSetSchema(xmlTextReaderPtr reader,xmlRelaxNGPtr schema)4121 xmlTextReaderRelaxNGSetSchema(xmlTextReaderPtr reader, xmlRelaxNGPtr schema) {
4122 if (reader == NULL)
4123 return(-1);
4124 if (schema == NULL) {
4125 if (reader->rngSchemas != NULL) {
4126 xmlRelaxNGFree(reader->rngSchemas);
4127 reader->rngSchemas = NULL;
4128 }
4129 if (reader->rngValidCtxt != NULL) {
4130 if (! reader->rngPreserveCtxt)
4131 xmlRelaxNGFreeValidCtxt(reader->rngValidCtxt);
4132 reader->rngValidCtxt = NULL;
4133 }
4134 reader->rngPreserveCtxt = 0;
4135 return(0);
4136 }
4137 if (reader->mode != XML_TEXTREADER_MODE_INITIAL)
4138 return(-1);
4139 if (reader->rngSchemas != NULL) {
4140 xmlRelaxNGFree(reader->rngSchemas);
4141 reader->rngSchemas = NULL;
4142 }
4143 if (reader->rngValidCtxt != NULL) {
4144 if (! reader->rngPreserveCtxt)
4145 xmlRelaxNGFreeValidCtxt(reader->rngValidCtxt);
4146 reader->rngValidCtxt = NULL;
4147 }
4148 reader->rngPreserveCtxt = 0;
4149 reader->rngValidCtxt = xmlRelaxNGNewValidCtxt(schema);
4150 if (reader->rngValidCtxt == NULL)
4151 return(-1);
4152 if (reader->errorFunc != NULL) {
4153 xmlRelaxNGSetValidErrors(reader->rngValidCtxt,
4154 xmlTextReaderValidityErrorRelay,
4155 xmlTextReaderValidityWarningRelay,
4156 reader);
4157 }
4158 if (reader->sErrorFunc != NULL) {
4159 xmlRelaxNGSetValidStructuredErrors(reader->rngValidCtxt,
4160 xmlTextReaderValidityStructuredRelay,
4161 reader);
4162 }
4163 reader->rngValidErrors = 0;
4164 reader->rngFullNode = NULL;
4165 reader->validate = XML_TEXTREADER_VALIDATE_RNG;
4166 return(0);
4167 }
4168
4169 /**
4170 * xmlTextReaderLocator:
4171 * @ctx: the xmlTextReaderPtr used
4172 * @file: returned file information
4173 * @line: returned line information
4174 *
4175 * Internal locator function for the readers
4176 *
4177 * Returns 0 in case the Schema validation could be (des)activated and
4178 * -1 in case of error.
4179 */
4180 static int
xmlTextReaderLocator(void * ctx,const char ** file,unsigned long * line)4181 xmlTextReaderLocator(void *ctx, const char **file, unsigned long *line) {
4182 xmlTextReaderPtr reader;
4183
4184 if ((ctx == NULL) || ((file == NULL) && (line == NULL)))
4185 return(-1);
4186
4187 if (file != NULL)
4188 *file = NULL;
4189 if (line != NULL)
4190 *line = 0;
4191
4192 reader = (xmlTextReaderPtr) ctx;
4193 if ((reader->ctxt != NULL) && (reader->ctxt->input != NULL)) {
4194 if (file != NULL)
4195 *file = reader->ctxt->input->filename;
4196 if (line != NULL)
4197 *line = reader->ctxt->input->line;
4198 return(0);
4199 }
4200 if (reader->node != NULL) {
4201 long res;
4202 int ret = 0;
4203
4204 if (line != NULL) {
4205 res = xmlGetLineNo(reader->node);
4206 if (res > 0)
4207 *line = (unsigned long) res;
4208 else
4209 ret = -1;
4210 }
4211 if (file != NULL) {
4212 xmlDocPtr doc = reader->node->doc;
4213 if ((doc != NULL) && (doc->URL != NULL))
4214 *file = (const char *) doc->URL;
4215 else
4216 ret = -1;
4217 }
4218 return(ret);
4219 }
4220 return(-1);
4221 }
4222
4223 /**
4224 * xmlTextReaderSetSchema:
4225 * @reader: the xmlTextReaderPtr used
4226 * @schema: a precompiled Schema schema
4227 *
4228 * Use XSD Schema to validate the document as it is processed.
4229 * Activation is only possible before the first Read().
4230 * if @schema is NULL, then Schema validation is desactivated.
4231 @ The @schema should not be freed until the reader is deallocated
4232 * or its use has been deactivated.
4233 *
4234 * Returns 0 in case the Schema validation could be (des)activated and
4235 * -1 in case of error.
4236 */
4237 int
xmlTextReaderSetSchema(xmlTextReaderPtr reader,xmlSchemaPtr schema)4238 xmlTextReaderSetSchema(xmlTextReaderPtr reader, xmlSchemaPtr schema) {
4239 if (reader == NULL)
4240 return(-1);
4241 if (schema == NULL) {
4242 if (reader->xsdPlug != NULL) {
4243 xmlSchemaSAXUnplug(reader->xsdPlug);
4244 reader->xsdPlug = NULL;
4245 }
4246 if (reader->xsdValidCtxt != NULL) {
4247 if (! reader->xsdPreserveCtxt)
4248 xmlSchemaFreeValidCtxt(reader->xsdValidCtxt);
4249 reader->xsdValidCtxt = NULL;
4250 }
4251 reader->xsdPreserveCtxt = 0;
4252 if (reader->xsdSchemas != NULL) {
4253 xmlSchemaFree(reader->xsdSchemas);
4254 reader->xsdSchemas = NULL;
4255 }
4256 return(0);
4257 }
4258 if (reader->mode != XML_TEXTREADER_MODE_INITIAL)
4259 return(-1);
4260 if (reader->xsdPlug != NULL) {
4261 xmlSchemaSAXUnplug(reader->xsdPlug);
4262 reader->xsdPlug = NULL;
4263 }
4264 if (reader->xsdValidCtxt != NULL) {
4265 if (! reader->xsdPreserveCtxt)
4266 xmlSchemaFreeValidCtxt(reader->xsdValidCtxt);
4267 reader->xsdValidCtxt = NULL;
4268 }
4269 reader->xsdPreserveCtxt = 0;
4270 if (reader->xsdSchemas != NULL) {
4271 xmlSchemaFree(reader->xsdSchemas);
4272 reader->xsdSchemas = NULL;
4273 }
4274 reader->xsdValidCtxt = xmlSchemaNewValidCtxt(schema);
4275 if (reader->xsdValidCtxt == NULL) {
4276 xmlSchemaFree(reader->xsdSchemas);
4277 reader->xsdSchemas = NULL;
4278 return(-1);
4279 }
4280 reader->xsdPlug = xmlSchemaSAXPlug(reader->xsdValidCtxt,
4281 &(reader->ctxt->sax),
4282 &(reader->ctxt->userData));
4283 if (reader->xsdPlug == NULL) {
4284 xmlSchemaFree(reader->xsdSchemas);
4285 reader->xsdSchemas = NULL;
4286 xmlSchemaFreeValidCtxt(reader->xsdValidCtxt);
4287 reader->xsdValidCtxt = NULL;
4288 return(-1);
4289 }
4290 xmlSchemaValidateSetLocator(reader->xsdValidCtxt,
4291 xmlTextReaderLocator,
4292 (void *) reader);
4293
4294 if (reader->errorFunc != NULL) {
4295 xmlSchemaSetValidErrors(reader->xsdValidCtxt,
4296 xmlTextReaderValidityErrorRelay,
4297 xmlTextReaderValidityWarningRelay,
4298 reader);
4299 }
4300 if (reader->sErrorFunc != NULL) {
4301 xmlSchemaSetValidStructuredErrors(reader->xsdValidCtxt,
4302 xmlTextReaderValidityStructuredRelay,
4303 reader);
4304 }
4305 reader->xsdValidErrors = 0;
4306 reader->validate = XML_TEXTREADER_VALIDATE_XSD;
4307 return(0);
4308 }
4309
4310 /**
4311 * xmlTextReaderRelaxNGValidateInternal:
4312 * @reader: the xmlTextReaderPtr used
4313 * @rng: the path to a RelaxNG schema or NULL
4314 * @ctxt: the RelaxNG schema validation context or NULL
4315 * @options: options (not yet used)
4316 *
4317 * Use RelaxNG to validate the document as it is processed.
4318 * Activation is only possible before the first Read().
4319 * If both @rng and @ctxt are NULL, then RelaxNG validation is deactivated.
4320 *
4321 * Returns 0 in case the RelaxNG validation could be (de)activated and
4322 * -1 in case of error.
4323 */
4324 static int
xmlTextReaderRelaxNGValidateInternal(xmlTextReaderPtr reader,const char * rng,xmlRelaxNGValidCtxtPtr ctxt,int options ATTRIBUTE_UNUSED)4325 xmlTextReaderRelaxNGValidateInternal(xmlTextReaderPtr reader,
4326 const char *rng,
4327 xmlRelaxNGValidCtxtPtr ctxt,
4328 int options ATTRIBUTE_UNUSED)
4329 {
4330 if (reader == NULL)
4331 return(-1);
4332
4333 if ((rng != NULL) && (ctxt != NULL))
4334 return (-1);
4335
4336 if (((rng != NULL) || (ctxt != NULL)) &&
4337 ((reader->mode != XML_TEXTREADER_MODE_INITIAL) ||
4338 (reader->ctxt == NULL)))
4339 return(-1);
4340
4341 /* Cleanup previous validation stuff. */
4342 if (reader->rngValidCtxt != NULL) {
4343 if ( !reader->rngPreserveCtxt)
4344 xmlRelaxNGFreeValidCtxt(reader->rngValidCtxt);
4345 reader->rngValidCtxt = NULL;
4346 }
4347 reader->rngPreserveCtxt = 0;
4348 if (reader->rngSchemas != NULL) {
4349 xmlRelaxNGFree(reader->rngSchemas);
4350 reader->rngSchemas = NULL;
4351 }
4352
4353 if ((rng == NULL) && (ctxt == NULL)) {
4354 /* We just want to deactivate the validation, so get out. */
4355 return(0);
4356 }
4357
4358
4359 if (rng != NULL) {
4360 xmlRelaxNGParserCtxtPtr pctxt;
4361 /* Parse the schema and create validation environment. */
4362
4363 pctxt = xmlRelaxNGNewParserCtxt(rng);
4364 if (reader->errorFunc != NULL) {
4365 xmlRelaxNGSetParserErrors(pctxt,
4366 xmlTextReaderValidityErrorRelay,
4367 xmlTextReaderValidityWarningRelay,
4368 reader);
4369 }
4370 if (reader->sErrorFunc != NULL) {
4371 xmlRelaxNGSetValidStructuredErrors(reader->rngValidCtxt,
4372 xmlTextReaderValidityStructuredRelay,
4373 reader);
4374 }
4375 reader->rngSchemas = xmlRelaxNGParse(pctxt);
4376 xmlRelaxNGFreeParserCtxt(pctxt);
4377 if (reader->rngSchemas == NULL)
4378 return(-1);
4379 reader->rngValidCtxt = xmlRelaxNGNewValidCtxt(reader->rngSchemas);
4380 if (reader->rngValidCtxt == NULL) {
4381 xmlRelaxNGFree(reader->rngSchemas);
4382 reader->rngSchemas = NULL;
4383 return(-1);
4384 }
4385 } else {
4386 /* Use the given validation context. */
4387 reader->rngValidCtxt = ctxt;
4388 reader->rngPreserveCtxt = 1;
4389 }
4390 /*
4391 * Redirect the validation context's error channels to use
4392 * the reader channels.
4393 * TODO: In case the user provides the validation context we
4394 * could make this redirection optional.
4395 */
4396 if (reader->errorFunc != NULL) {
4397 xmlRelaxNGSetValidErrors(reader->rngValidCtxt,
4398 xmlTextReaderValidityErrorRelay,
4399 xmlTextReaderValidityWarningRelay,
4400 reader);
4401 }
4402 if (reader->sErrorFunc != NULL) {
4403 xmlRelaxNGSetValidStructuredErrors(reader->rngValidCtxt,
4404 xmlTextReaderValidityStructuredRelay,
4405 reader);
4406 }
4407 reader->rngValidErrors = 0;
4408 reader->rngFullNode = NULL;
4409 reader->validate = XML_TEXTREADER_VALIDATE_RNG;
4410 return(0);
4411 }
4412
4413 /**
4414 * xmlTextReaderSchemaValidateInternal:
4415 * @reader: the xmlTextReaderPtr used
4416 * @xsd: the path to a W3C XSD schema or NULL
4417 * @ctxt: the XML Schema validation context or NULL
4418 * @options: options (not used yet)
4419 *
4420 * Validate the document as it is processed using XML Schema.
4421 * Activation is only possible before the first Read().
4422 * If both @xsd and @ctxt are NULL then XML Schema validation is deactivated.
4423 *
4424 * Returns 0 in case the schemas validation could be (de)activated and
4425 * -1 in case of error.
4426 */
4427 static int
xmlTextReaderSchemaValidateInternal(xmlTextReaderPtr reader,const char * xsd,xmlSchemaValidCtxtPtr ctxt,int options ATTRIBUTE_UNUSED)4428 xmlTextReaderSchemaValidateInternal(xmlTextReaderPtr reader,
4429 const char *xsd,
4430 xmlSchemaValidCtxtPtr ctxt,
4431 int options ATTRIBUTE_UNUSED)
4432 {
4433 if (reader == NULL)
4434 return(-1);
4435
4436 if ((xsd != NULL) && (ctxt != NULL))
4437 return(-1);
4438
4439 if (((xsd != NULL) || (ctxt != NULL)) &&
4440 ((reader->mode != XML_TEXTREADER_MODE_INITIAL) ||
4441 (reader->ctxt == NULL)))
4442 return(-1);
4443
4444 /* Cleanup previous validation stuff. */
4445 if (reader->xsdPlug != NULL) {
4446 xmlSchemaSAXUnplug(reader->xsdPlug);
4447 reader->xsdPlug = NULL;
4448 }
4449 if (reader->xsdValidCtxt != NULL) {
4450 if (! reader->xsdPreserveCtxt)
4451 xmlSchemaFreeValidCtxt(reader->xsdValidCtxt);
4452 reader->xsdValidCtxt = NULL;
4453 }
4454 reader->xsdPreserveCtxt = 0;
4455 if (reader->xsdSchemas != NULL) {
4456 xmlSchemaFree(reader->xsdSchemas);
4457 reader->xsdSchemas = NULL;
4458 }
4459
4460 if ((xsd == NULL) && (ctxt == NULL)) {
4461 /* We just want to deactivate the validation, so get out. */
4462 return(0);
4463 }
4464
4465 if (xsd != NULL) {
4466 xmlSchemaParserCtxtPtr pctxt;
4467 /* Parse the schema and create validation environment. */
4468 pctxt = xmlSchemaNewParserCtxt(xsd);
4469 if (reader->errorFunc != NULL) {
4470 xmlSchemaSetParserErrors(pctxt,
4471 xmlTextReaderValidityErrorRelay,
4472 xmlTextReaderValidityWarningRelay,
4473 reader);
4474 }
4475 reader->xsdSchemas = xmlSchemaParse(pctxt);
4476 xmlSchemaFreeParserCtxt(pctxt);
4477 if (reader->xsdSchemas == NULL)
4478 return(-1);
4479 reader->xsdValidCtxt = xmlSchemaNewValidCtxt(reader->xsdSchemas);
4480 if (reader->xsdValidCtxt == NULL) {
4481 xmlSchemaFree(reader->xsdSchemas);
4482 reader->xsdSchemas = NULL;
4483 return(-1);
4484 }
4485 reader->xsdPlug = xmlSchemaSAXPlug(reader->xsdValidCtxt,
4486 &(reader->ctxt->sax),
4487 &(reader->ctxt->userData));
4488 if (reader->xsdPlug == NULL) {
4489 xmlSchemaFree(reader->xsdSchemas);
4490 reader->xsdSchemas = NULL;
4491 xmlSchemaFreeValidCtxt(reader->xsdValidCtxt);
4492 reader->xsdValidCtxt = NULL;
4493 return(-1);
4494 }
4495 } else {
4496 /* Use the given validation context. */
4497 reader->xsdValidCtxt = ctxt;
4498 reader->xsdPreserveCtxt = 1;
4499 reader->xsdPlug = xmlSchemaSAXPlug(reader->xsdValidCtxt,
4500 &(reader->ctxt->sax),
4501 &(reader->ctxt->userData));
4502 if (reader->xsdPlug == NULL) {
4503 reader->xsdValidCtxt = NULL;
4504 reader->xsdPreserveCtxt = 0;
4505 return(-1);
4506 }
4507 }
4508 xmlSchemaValidateSetLocator(reader->xsdValidCtxt,
4509 xmlTextReaderLocator,
4510 (void *) reader);
4511 /*
4512 * Redirect the validation context's error channels to use
4513 * the reader channels.
4514 * TODO: In case the user provides the validation context we
4515 * could make this redirection optional.
4516 */
4517 if (reader->errorFunc != NULL) {
4518 xmlSchemaSetValidErrors(reader->xsdValidCtxt,
4519 xmlTextReaderValidityErrorRelay,
4520 xmlTextReaderValidityWarningRelay,
4521 reader);
4522 }
4523 if (reader->sErrorFunc != NULL) {
4524 xmlSchemaSetValidStructuredErrors(reader->xsdValidCtxt,
4525 xmlTextReaderValidityStructuredRelay,
4526 reader);
4527 }
4528 reader->xsdValidErrors = 0;
4529 reader->validate = XML_TEXTREADER_VALIDATE_XSD;
4530 return(0);
4531 }
4532
4533 /**
4534 * xmlTextReaderSchemaValidateCtxt:
4535 * @reader: the xmlTextReaderPtr used
4536 * @ctxt: the XML Schema validation context or NULL
4537 * @options: options (not used yet)
4538 *
4539 * Use W3C XSD schema context to validate the document as it is processed.
4540 * Activation is only possible before the first Read().
4541 * If @ctxt is NULL, then XML Schema validation is deactivated.
4542 *
4543 * Returns 0 in case the schemas validation could be (de)activated and
4544 * -1 in case of error.
4545 */
4546 int
xmlTextReaderSchemaValidateCtxt(xmlTextReaderPtr reader,xmlSchemaValidCtxtPtr ctxt,int options)4547 xmlTextReaderSchemaValidateCtxt(xmlTextReaderPtr reader,
4548 xmlSchemaValidCtxtPtr ctxt,
4549 int options)
4550 {
4551 return(xmlTextReaderSchemaValidateInternal(reader, NULL, ctxt, options));
4552 }
4553
4554 /**
4555 * xmlTextReaderSchemaValidate:
4556 * @reader: the xmlTextReaderPtr used
4557 * @xsd: the path to a W3C XSD schema or NULL
4558 *
4559 * Use W3C XSD schema to validate the document as it is processed.
4560 * Activation is only possible before the first Read().
4561 * If @xsd is NULL, then XML Schema validation is deactivated.
4562 *
4563 * Returns 0 in case the schemas validation could be (de)activated and
4564 * -1 in case of error.
4565 */
4566 int
xmlTextReaderSchemaValidate(xmlTextReaderPtr reader,const char * xsd)4567 xmlTextReaderSchemaValidate(xmlTextReaderPtr reader, const char *xsd)
4568 {
4569 return(xmlTextReaderSchemaValidateInternal(reader, xsd, NULL, 0));
4570 }
4571
4572 /**
4573 * xmlTextReaderRelaxNGValidateCtxt:
4574 * @reader: the xmlTextReaderPtr used
4575 * @ctxt: the RelaxNG schema validation context or NULL
4576 * @options: options (not used yet)
4577 *
4578 * Use RelaxNG schema context to validate the document as it is processed.
4579 * Activation is only possible before the first Read().
4580 * If @ctxt is NULL, then RelaxNG schema validation is deactivated.
4581 *
4582 * Returns 0 in case the schemas validation could be (de)activated and
4583 * -1 in case of error.
4584 */
4585 int
xmlTextReaderRelaxNGValidateCtxt(xmlTextReaderPtr reader,xmlRelaxNGValidCtxtPtr ctxt,int options)4586 xmlTextReaderRelaxNGValidateCtxt(xmlTextReaderPtr reader,
4587 xmlRelaxNGValidCtxtPtr ctxt,
4588 int options)
4589 {
4590 return(xmlTextReaderRelaxNGValidateInternal(reader, NULL, ctxt, options));
4591 }
4592
4593 /**
4594 * xmlTextReaderRelaxNGValidate:
4595 * @reader: the xmlTextReaderPtr used
4596 * @rng: the path to a RelaxNG schema or NULL
4597 *
4598 * Use RelaxNG schema to validate the document as it is processed.
4599 * Activation is only possible before the first Read().
4600 * If @rng is NULL, then RelaxNG schema validation is deactivated.
4601 *
4602 * Returns 0 in case the schemas validation could be (de)activated and
4603 * -1 in case of error.
4604 */
4605 int
xmlTextReaderRelaxNGValidate(xmlTextReaderPtr reader,const char * rng)4606 xmlTextReaderRelaxNGValidate(xmlTextReaderPtr reader, const char *rng)
4607 {
4608 return(xmlTextReaderRelaxNGValidateInternal(reader, rng, NULL, 0));
4609 }
4610
4611 #endif
4612
4613 /**
4614 * xmlTextReaderIsNamespaceDecl:
4615 * @reader: the xmlTextReaderPtr used
4616 *
4617 * Determine whether the current node is a namespace declaration
4618 * rather than a regular attribute.
4619 *
4620 * Returns 1 if the current node is a namespace declaration, 0 if it
4621 * is a regular attribute or other type of node, or -1 in case of
4622 * error.
4623 */
4624 int
xmlTextReaderIsNamespaceDecl(xmlTextReaderPtr reader)4625 xmlTextReaderIsNamespaceDecl(xmlTextReaderPtr reader) {
4626 xmlNodePtr node;
4627 if (reader == NULL)
4628 return(-1);
4629 if (reader->node == NULL)
4630 return(-1);
4631 if (reader->curnode != NULL)
4632 node = reader->curnode;
4633 else
4634 node = reader->node;
4635
4636 if (XML_NAMESPACE_DECL == node->type)
4637 return(1);
4638 else
4639 return(0);
4640 }
4641
4642 /**
4643 * xmlTextReaderConstXmlVersion:
4644 * @reader: the xmlTextReaderPtr used
4645 *
4646 * Determine the XML version of the document being read.
4647 *
4648 * Returns a string containing the XML version of the document or NULL
4649 * in case of error. The string is deallocated with the reader.
4650 */
4651 const xmlChar *
xmlTextReaderConstXmlVersion(xmlTextReaderPtr reader)4652 xmlTextReaderConstXmlVersion(xmlTextReaderPtr reader) {
4653 xmlDocPtr doc = NULL;
4654 if (reader == NULL)
4655 return(NULL);
4656 if (reader->doc != NULL)
4657 doc = reader->doc;
4658 else if (reader->ctxt != NULL)
4659 doc = reader->ctxt->myDoc;
4660 if (doc == NULL)
4661 return(NULL);
4662
4663 if (doc->version == NULL)
4664 return(NULL);
4665 else
4666 return(CONSTSTR(doc->version));
4667 }
4668
4669 /**
4670 * xmlTextReaderStandalone:
4671 * @reader: the xmlTextReaderPtr used
4672 *
4673 * Determine the standalone status of the document being read.
4674 *
4675 * Returns 1 if the document was declared to be standalone, 0 if it
4676 * was declared to be not standalone, or -1 if the document did not
4677 * specify its standalone status or in case of error.
4678 */
4679 int
xmlTextReaderStandalone(xmlTextReaderPtr reader)4680 xmlTextReaderStandalone(xmlTextReaderPtr reader) {
4681 xmlDocPtr doc = NULL;
4682 if (reader == NULL)
4683 return(-1);
4684 if (reader->doc != NULL)
4685 doc = reader->doc;
4686 else if (reader->ctxt != NULL)
4687 doc = reader->ctxt->myDoc;
4688 if (doc == NULL)
4689 return(-1);
4690
4691 return(doc->standalone);
4692 }
4693
4694 /************************************************************************
4695 * *
4696 * Error Handling Extensions *
4697 * *
4698 ************************************************************************/
4699
4700 /* helper to build a xmlMalloc'ed string from a format and va_list */
4701 static char *
xmlTextReaderBuildMessage(const char * msg,va_list ap)4702 xmlTextReaderBuildMessage(const char *msg, va_list ap) {
4703 int size = 0;
4704 int chars;
4705 char *larger;
4706 char *str = NULL;
4707 va_list aq;
4708
4709 while (1) {
4710 VA_COPY(aq, ap);
4711 chars = vsnprintf(str, size, msg, aq);
4712 va_end(aq);
4713 if (chars < 0) {
4714 xmlGenericError(xmlGenericErrorContext, "vsnprintf failed !\n");
4715 if (str)
4716 xmlFree(str);
4717 return NULL;
4718 }
4719 if ((chars < size) || (size == MAX_ERR_MSG_SIZE))
4720 break;
4721 if (chars < MAX_ERR_MSG_SIZE)
4722 size = chars + 1;
4723 else
4724 size = MAX_ERR_MSG_SIZE;
4725 if ((larger = (char *) xmlRealloc(str, size)) == NULL) {
4726 xmlGenericError(xmlGenericErrorContext, "xmlRealloc failed !\n");
4727 if (str)
4728 xmlFree(str);
4729 return NULL;
4730 }
4731 str = larger;
4732 }
4733
4734 return str;
4735 }
4736
4737 /**
4738 * xmlTextReaderLocatorLineNumber:
4739 * @locator: the xmlTextReaderLocatorPtr used
4740 *
4741 * Obtain the line number for the given locator.
4742 *
4743 * Returns the line number or -1 in case of error.
4744 */
4745 int
xmlTextReaderLocatorLineNumber(xmlTextReaderLocatorPtr locator)4746 xmlTextReaderLocatorLineNumber(xmlTextReaderLocatorPtr locator) {
4747 /* we know that locator is a xmlParserCtxtPtr */
4748 xmlParserCtxtPtr ctx = (xmlParserCtxtPtr)locator;
4749 int ret = -1;
4750
4751 if (locator == NULL)
4752 return(-1);
4753 if (ctx->node != NULL) {
4754 ret = xmlGetLineNo(ctx->node);
4755 }
4756 else {
4757 /* inspired from error.c */
4758 xmlParserInputPtr input;
4759 input = ctx->input;
4760 if ((input->filename == NULL) && (ctx->inputNr > 1))
4761 input = ctx->inputTab[ctx->inputNr - 2];
4762 if (input != NULL) {
4763 ret = input->line;
4764 }
4765 else {
4766 ret = -1;
4767 }
4768 }
4769
4770 return ret;
4771 }
4772
4773 /**
4774 * xmlTextReaderLocatorBaseURI:
4775 * @locator: the xmlTextReaderLocatorPtr used
4776 *
4777 * Obtain the base URI for the given locator.
4778 *
4779 * Returns the base URI or NULL in case of error,
4780 * if non NULL it need to be freed by the caller.
4781 */
4782 xmlChar *
xmlTextReaderLocatorBaseURI(xmlTextReaderLocatorPtr locator)4783 xmlTextReaderLocatorBaseURI(xmlTextReaderLocatorPtr locator) {
4784 /* we know that locator is a xmlParserCtxtPtr */
4785 xmlParserCtxtPtr ctx = (xmlParserCtxtPtr)locator;
4786 xmlChar *ret = NULL;
4787
4788 if (locator == NULL)
4789 return(NULL);
4790 if (ctx->node != NULL) {
4791 ret = xmlNodeGetBase(NULL,ctx->node);
4792 }
4793 else {
4794 /* inspired from error.c */
4795 xmlParserInputPtr input;
4796 input = ctx->input;
4797 if ((input->filename == NULL) && (ctx->inputNr > 1))
4798 input = ctx->inputTab[ctx->inputNr - 2];
4799 if (input != NULL) {
4800 ret = xmlStrdup(BAD_CAST input->filename);
4801 }
4802 else {
4803 ret = NULL;
4804 }
4805 }
4806
4807 return ret;
4808 }
4809
4810 static void
xmlTextReaderGenericError(void * ctxt,xmlParserSeverities severity,char * str)4811 xmlTextReaderGenericError(void *ctxt, xmlParserSeverities severity,
4812 char *str)
4813 {
4814 xmlParserCtxtPtr ctx = (xmlParserCtxtPtr) ctxt;
4815
4816 xmlTextReaderPtr reader = (xmlTextReaderPtr) ctx->_private;
4817
4818 if (str != NULL) {
4819 if (reader->errorFunc)
4820 reader->errorFunc(reader->errorFuncArg, str, severity,
4821 (xmlTextReaderLocatorPtr) ctx);
4822 xmlFree(str);
4823 }
4824 }
4825
4826 static void
xmlTextReaderStructuredError(void * ctxt,xmlErrorPtr error)4827 xmlTextReaderStructuredError(void *ctxt, xmlErrorPtr error)
4828 {
4829 xmlParserCtxtPtr ctx = (xmlParserCtxtPtr) ctxt;
4830
4831 xmlTextReaderPtr reader = (xmlTextReaderPtr) ctx->_private;
4832
4833 if (error && reader->sErrorFunc) {
4834 reader->sErrorFunc(reader->errorFuncArg, (xmlErrorPtr) error);
4835 }
4836 }
4837
4838 static void XMLCDECL
xmlTextReaderError(void * ctxt,const char * msg,...)4839 xmlTextReaderError(void *ctxt, const char *msg, ...)
4840 {
4841 va_list ap;
4842
4843 va_start(ap, msg);
4844 xmlTextReaderGenericError(ctxt,
4845 XML_PARSER_SEVERITY_ERROR,
4846 xmlTextReaderBuildMessage(msg, ap));
4847 va_end(ap);
4848
4849 }
4850
4851 static void XMLCDECL
xmlTextReaderWarning(void * ctxt,const char * msg,...)4852 xmlTextReaderWarning(void *ctxt, const char *msg, ...)
4853 {
4854 va_list ap;
4855
4856 va_start(ap, msg);
4857 xmlTextReaderGenericError(ctxt,
4858 XML_PARSER_SEVERITY_WARNING,
4859 xmlTextReaderBuildMessage(msg, ap));
4860 va_end(ap);
4861 }
4862
4863 static void XMLCDECL
xmlTextReaderValidityError(void * ctxt,const char * msg,...)4864 xmlTextReaderValidityError(void *ctxt, const char *msg, ...)
4865 {
4866 va_list ap;
4867
4868 int len = xmlStrlen((const xmlChar *) msg);
4869
4870 if ((len > 1) && (msg[len - 2] != ':')) {
4871 /*
4872 * some callbacks only report locator information:
4873 * skip them (mimicking behaviour in error.c)
4874 */
4875 va_start(ap, msg);
4876 xmlTextReaderGenericError(ctxt,
4877 XML_PARSER_SEVERITY_VALIDITY_ERROR,
4878 xmlTextReaderBuildMessage(msg, ap));
4879 va_end(ap);
4880 }
4881 }
4882
4883 static void XMLCDECL
xmlTextReaderValidityWarning(void * ctxt,const char * msg,...)4884 xmlTextReaderValidityWarning(void *ctxt, const char *msg, ...)
4885 {
4886 va_list ap;
4887
4888 int len = xmlStrlen((const xmlChar *) msg);
4889
4890 if ((len != 0) && (msg[len - 1] != ':')) {
4891 /*
4892 * some callbacks only report locator information:
4893 * skip them (mimicking behaviour in error.c)
4894 */
4895 va_start(ap, msg);
4896 xmlTextReaderGenericError(ctxt,
4897 XML_PARSER_SEVERITY_VALIDITY_WARNING,
4898 xmlTextReaderBuildMessage(msg, ap));
4899 va_end(ap);
4900 }
4901 }
4902
4903 /**
4904 * xmlTextReaderSetErrorHandler:
4905 * @reader: the xmlTextReaderPtr used
4906 * @f: the callback function to call on error and warnings
4907 * @arg: a user argument to pass to the callback function
4908 *
4909 * Register a callback function that will be called on error and warnings.
4910 *
4911 * If @f is NULL, the default error and warning handlers are restored.
4912 */
4913 void
xmlTextReaderSetErrorHandler(xmlTextReaderPtr reader,xmlTextReaderErrorFunc f,void * arg)4914 xmlTextReaderSetErrorHandler(xmlTextReaderPtr reader,
4915 xmlTextReaderErrorFunc f, void *arg)
4916 {
4917 if (f != NULL) {
4918 reader->ctxt->sax->error = xmlTextReaderError;
4919 reader->ctxt->sax->serror = NULL;
4920 reader->ctxt->vctxt.error = xmlTextReaderValidityError;
4921 reader->ctxt->sax->warning = xmlTextReaderWarning;
4922 reader->ctxt->vctxt.warning = xmlTextReaderValidityWarning;
4923 reader->errorFunc = f;
4924 reader->sErrorFunc = NULL;
4925 reader->errorFuncArg = arg;
4926 #ifdef LIBXML_SCHEMAS_ENABLED
4927 if (reader->rngValidCtxt) {
4928 xmlRelaxNGSetValidErrors(reader->rngValidCtxt,
4929 xmlTextReaderValidityErrorRelay,
4930 xmlTextReaderValidityWarningRelay,
4931 reader);
4932 xmlRelaxNGSetValidStructuredErrors(reader->rngValidCtxt, NULL,
4933 reader);
4934 }
4935 if (reader->xsdValidCtxt) {
4936 xmlSchemaSetValidErrors(reader->xsdValidCtxt,
4937 xmlTextReaderValidityErrorRelay,
4938 xmlTextReaderValidityWarningRelay,
4939 reader);
4940 xmlSchemaSetValidStructuredErrors(reader->xsdValidCtxt, NULL,
4941 reader);
4942 }
4943 #endif
4944 } else {
4945 /* restore defaults */
4946 reader->ctxt->sax->error = xmlParserError;
4947 reader->ctxt->vctxt.error = xmlParserValidityError;
4948 reader->ctxt->sax->warning = xmlParserWarning;
4949 reader->ctxt->vctxt.warning = xmlParserValidityWarning;
4950 reader->errorFunc = NULL;
4951 reader->sErrorFunc = NULL;
4952 reader->errorFuncArg = NULL;
4953 #ifdef LIBXML_SCHEMAS_ENABLED
4954 if (reader->rngValidCtxt) {
4955 xmlRelaxNGSetValidErrors(reader->rngValidCtxt, NULL, NULL,
4956 reader);
4957 xmlRelaxNGSetValidStructuredErrors(reader->rngValidCtxt, NULL,
4958 reader);
4959 }
4960 if (reader->xsdValidCtxt) {
4961 xmlSchemaSetValidErrors(reader->xsdValidCtxt, NULL, NULL,
4962 reader);
4963 xmlSchemaSetValidStructuredErrors(reader->xsdValidCtxt, NULL,
4964 reader);
4965 }
4966 #endif
4967 }
4968 }
4969
4970 /**
4971 * xmlTextReaderSetStructuredErrorHandler:
4972 * @reader: the xmlTextReaderPtr used
4973 * @f: the callback function to call on error and warnings
4974 * @arg: a user argument to pass to the callback function
4975 *
4976 * Register a callback function that will be called on error and warnings.
4977 *
4978 * If @f is NULL, the default error and warning handlers are restored.
4979 */
4980 void
xmlTextReaderSetStructuredErrorHandler(xmlTextReaderPtr reader,xmlStructuredErrorFunc f,void * arg)4981 xmlTextReaderSetStructuredErrorHandler(xmlTextReaderPtr reader,
4982 xmlStructuredErrorFunc f, void *arg)
4983 {
4984 if (f != NULL) {
4985 reader->ctxt->sax->error = NULL;
4986 reader->ctxt->sax->serror = xmlTextReaderStructuredError;
4987 reader->ctxt->vctxt.error = xmlTextReaderValidityError;
4988 reader->ctxt->sax->warning = xmlTextReaderWarning;
4989 reader->ctxt->vctxt.warning = xmlTextReaderValidityWarning;
4990 reader->sErrorFunc = f;
4991 reader->errorFunc = NULL;
4992 reader->errorFuncArg = arg;
4993 #ifdef LIBXML_SCHEMAS_ENABLED
4994 if (reader->rngValidCtxt) {
4995 xmlRelaxNGSetValidErrors(reader->rngValidCtxt, NULL, NULL,
4996 reader);
4997 xmlRelaxNGSetValidStructuredErrors(reader->rngValidCtxt,
4998 xmlTextReaderValidityStructuredRelay,
4999 reader);
5000 }
5001 if (reader->xsdValidCtxt) {
5002 xmlSchemaSetValidErrors(reader->xsdValidCtxt, NULL, NULL,
5003 reader);
5004 xmlSchemaSetValidStructuredErrors(reader->xsdValidCtxt,
5005 xmlTextReaderValidityStructuredRelay,
5006 reader);
5007 }
5008 #endif
5009 } else {
5010 /* restore defaults */
5011 reader->ctxt->sax->error = xmlParserError;
5012 reader->ctxt->sax->serror = NULL;
5013 reader->ctxt->vctxt.error = xmlParserValidityError;
5014 reader->ctxt->sax->warning = xmlParserWarning;
5015 reader->ctxt->vctxt.warning = xmlParserValidityWarning;
5016 reader->errorFunc = NULL;
5017 reader->sErrorFunc = NULL;
5018 reader->errorFuncArg = NULL;
5019 #ifdef LIBXML_SCHEMAS_ENABLED
5020 if (reader->rngValidCtxt) {
5021 xmlRelaxNGSetValidErrors(reader->rngValidCtxt, NULL, NULL,
5022 reader);
5023 xmlRelaxNGSetValidStructuredErrors(reader->rngValidCtxt, NULL,
5024 reader);
5025 }
5026 if (reader->xsdValidCtxt) {
5027 xmlSchemaSetValidErrors(reader->xsdValidCtxt, NULL, NULL,
5028 reader);
5029 xmlSchemaSetValidStructuredErrors(reader->xsdValidCtxt, NULL,
5030 reader);
5031 }
5032 #endif
5033 }
5034 }
5035
5036 /**
5037 * xmlTextReaderIsValid:
5038 * @reader: the xmlTextReaderPtr used
5039 *
5040 * Retrieve the validity status from the parser context
5041 *
5042 * Returns the flag value 1 if valid, 0 if no, and -1 in case of error
5043 */
5044 int
xmlTextReaderIsValid(xmlTextReaderPtr reader)5045 xmlTextReaderIsValid(xmlTextReaderPtr reader)
5046 {
5047 if (reader == NULL)
5048 return (-1);
5049 #ifdef LIBXML_SCHEMAS_ENABLED
5050 if (reader->validate == XML_TEXTREADER_VALIDATE_RNG)
5051 return (reader->rngValidErrors == 0);
5052 if (reader->validate == XML_TEXTREADER_VALIDATE_XSD)
5053 return (reader->xsdValidErrors == 0);
5054 #endif
5055 if ((reader->ctxt != NULL) && (reader->ctxt->validate == 1))
5056 return (reader->ctxt->valid);
5057 return (0);
5058 }
5059
5060 /**
5061 * xmlTextReaderGetErrorHandler:
5062 * @reader: the xmlTextReaderPtr used
5063 * @f: the callback function or NULL is no callback has been registered
5064 * @arg: a user argument
5065 *
5066 * Retrieve the error callback function and user argument.
5067 */
5068 void
xmlTextReaderGetErrorHandler(xmlTextReaderPtr reader,xmlTextReaderErrorFunc * f,void ** arg)5069 xmlTextReaderGetErrorHandler(xmlTextReaderPtr reader,
5070 xmlTextReaderErrorFunc * f, void **arg)
5071 {
5072 if (f != NULL)
5073 *f = reader->errorFunc;
5074 if (arg != NULL)
5075 *arg = reader->errorFuncArg;
5076 }
5077 /************************************************************************
5078 * *
5079 * New set (2.6.0) of simpler and more flexible APIs *
5080 * *
5081 ************************************************************************/
5082
5083 /**
5084 * xmlTextReaderSetup:
5085 * @reader: an XML reader
5086 * @input: xmlParserInputBufferPtr used to feed the reader, will
5087 * be destroyed with it.
5088 * @URL: the base URL to use for the document
5089 * @encoding: the document encoding, or NULL
5090 * @options: a combination of xmlParserOption
5091 *
5092 * Setup an XML reader with new options
5093 *
5094 * Returns 0 in case of success and -1 in case of error.
5095 */
5096 int
xmlTextReaderSetup(xmlTextReaderPtr reader,xmlParserInputBufferPtr input,const char * URL,const char * encoding,int options)5097 xmlTextReaderSetup(xmlTextReaderPtr reader,
5098 xmlParserInputBufferPtr input, const char *URL,
5099 const char *encoding, int options)
5100 {
5101 if (reader == NULL) {
5102 if (input != NULL)
5103 xmlFreeParserInputBuffer(input);
5104 return (-1);
5105 }
5106
5107 /*
5108 * we force the generation of compact text nodes on the reader
5109 * since usr applications should never modify the tree
5110 */
5111 options |= XML_PARSE_COMPACT;
5112
5113 reader->doc = NULL;
5114 reader->entNr = 0;
5115 reader->parserFlags = options;
5116 reader->validate = XML_TEXTREADER_NOT_VALIDATE;
5117 if ((input != NULL) && (reader->input != NULL) &&
5118 (reader->allocs & XML_TEXTREADER_INPUT)) {
5119 xmlFreeParserInputBuffer(reader->input);
5120 reader->input = NULL;
5121 reader->allocs -= XML_TEXTREADER_INPUT;
5122 }
5123 if (input != NULL) {
5124 reader->input = input;
5125 reader->allocs |= XML_TEXTREADER_INPUT;
5126 }
5127 if (reader->buffer == NULL)
5128 reader->buffer = xmlBufCreateSize(100);
5129 if (reader->buffer == NULL) {
5130 xmlGenericError(xmlGenericErrorContext,
5131 "xmlTextReaderSetup : malloc failed\n");
5132 return (-1);
5133 }
5134 if (reader->sax == NULL)
5135 reader->sax = (xmlSAXHandler *) xmlMalloc(sizeof(xmlSAXHandler));
5136 if (reader->sax == NULL) {
5137 xmlGenericError(xmlGenericErrorContext,
5138 "xmlTextReaderSetup : malloc failed\n");
5139 return (-1);
5140 }
5141 xmlSAXVersion(reader->sax, 2);
5142 reader->startElement = reader->sax->startElement;
5143 reader->sax->startElement = xmlTextReaderStartElement;
5144 reader->endElement = reader->sax->endElement;
5145 reader->sax->endElement = xmlTextReaderEndElement;
5146 #ifdef LIBXML_SAX1_ENABLED
5147 if (reader->sax->initialized == XML_SAX2_MAGIC) {
5148 #endif /* LIBXML_SAX1_ENABLED */
5149 reader->startElementNs = reader->sax->startElementNs;
5150 reader->sax->startElementNs = xmlTextReaderStartElementNs;
5151 reader->endElementNs = reader->sax->endElementNs;
5152 reader->sax->endElementNs = xmlTextReaderEndElementNs;
5153 #ifdef LIBXML_SAX1_ENABLED
5154 } else {
5155 reader->startElementNs = NULL;
5156 reader->endElementNs = NULL;
5157 }
5158 #endif /* LIBXML_SAX1_ENABLED */
5159 reader->characters = reader->sax->characters;
5160 reader->sax->characters = xmlTextReaderCharacters;
5161 reader->sax->ignorableWhitespace = xmlTextReaderCharacters;
5162 reader->cdataBlock = reader->sax->cdataBlock;
5163 reader->sax->cdataBlock = xmlTextReaderCDataBlock;
5164
5165 reader->mode = XML_TEXTREADER_MODE_INITIAL;
5166 reader->node = NULL;
5167 reader->curnode = NULL;
5168 if (input != NULL) {
5169 if (xmlBufUse(reader->input->buffer) < 4) {
5170 xmlParserInputBufferRead(input, 4);
5171 }
5172 if (reader->ctxt == NULL) {
5173 if (xmlBufUse(reader->input->buffer) >= 4) {
5174 reader->ctxt = xmlCreatePushParserCtxt(reader->sax, NULL,
5175 (const char *) xmlBufContent(reader->input->buffer),
5176 4, URL);
5177 reader->base = 0;
5178 reader->cur = 4;
5179 } else {
5180 reader->ctxt =
5181 xmlCreatePushParserCtxt(reader->sax, NULL, NULL, 0, URL);
5182 reader->base = 0;
5183 reader->cur = 0;
5184 }
5185 } else {
5186 xmlParserInputPtr inputStream;
5187 xmlParserInputBufferPtr buf;
5188 xmlCharEncoding enc = XML_CHAR_ENCODING_NONE;
5189
5190 xmlCtxtReset(reader->ctxt);
5191 buf = xmlAllocParserInputBuffer(enc);
5192 if (buf == NULL) return(-1);
5193 inputStream = xmlNewInputStream(reader->ctxt);
5194 if (inputStream == NULL) {
5195 xmlFreeParserInputBuffer(buf);
5196 return(-1);
5197 }
5198
5199 if (URL == NULL)
5200 inputStream->filename = NULL;
5201 else
5202 inputStream->filename = (char *)
5203 xmlCanonicPath((const xmlChar *) URL);
5204 inputStream->buf = buf;
5205 xmlBufResetInput(buf->buffer, inputStream);
5206
5207 inputPush(reader->ctxt, inputStream);
5208 reader->cur = 0;
5209 }
5210 if (reader->ctxt == NULL) {
5211 xmlGenericError(xmlGenericErrorContext,
5212 "xmlTextReaderSetup : malloc failed\n");
5213 return (-1);
5214 }
5215 }
5216 if (reader->dict != NULL) {
5217 if (reader->ctxt->dict != NULL) {
5218 if (reader->dict != reader->ctxt->dict) {
5219 xmlDictFree(reader->dict);
5220 reader->dict = reader->ctxt->dict;
5221 }
5222 } else {
5223 reader->ctxt->dict = reader->dict;
5224 }
5225 } else {
5226 if (reader->ctxt->dict == NULL)
5227 reader->ctxt->dict = xmlDictCreate();
5228 reader->dict = reader->ctxt->dict;
5229 }
5230 reader->ctxt->_private = reader;
5231 reader->ctxt->linenumbers = 1;
5232 reader->ctxt->dictNames = 1;
5233 /*
5234 * use the parser dictionnary to allocate all elements and attributes names
5235 */
5236 reader->ctxt->docdict = 1;
5237 reader->ctxt->parseMode = XML_PARSE_READER;
5238
5239 #ifdef LIBXML_XINCLUDE_ENABLED
5240 if (reader->xincctxt != NULL) {
5241 xmlXIncludeFreeContext(reader->xincctxt);
5242 reader->xincctxt = NULL;
5243 }
5244 if (options & XML_PARSE_XINCLUDE) {
5245 reader->xinclude = 1;
5246 reader->xinclude_name = xmlDictLookup(reader->dict, XINCLUDE_NODE, -1);
5247 options -= XML_PARSE_XINCLUDE;
5248 } else
5249 reader->xinclude = 0;
5250 reader->in_xinclude = 0;
5251 #endif
5252 #ifdef LIBXML_PATTERN_ENABLED
5253 if (reader->patternTab == NULL) {
5254 reader->patternNr = 0;
5255 reader->patternMax = 0;
5256 }
5257 while (reader->patternNr > 0) {
5258 reader->patternNr--;
5259 if (reader->patternTab[reader->patternNr] != NULL) {
5260 xmlFreePattern(reader->patternTab[reader->patternNr]);
5261 reader->patternTab[reader->patternNr] = NULL;
5262 }
5263 }
5264 #endif
5265
5266 if (options & XML_PARSE_DTDVALID)
5267 reader->validate = XML_TEXTREADER_VALIDATE_DTD;
5268
5269 xmlCtxtUseOptions(reader->ctxt, options);
5270 if (encoding != NULL) {
5271 xmlCharEncodingHandlerPtr hdlr;
5272
5273 hdlr = xmlFindCharEncodingHandler(encoding);
5274 if (hdlr != NULL)
5275 xmlSwitchToEncoding(reader->ctxt, hdlr);
5276 }
5277 if ((URL != NULL) && (reader->ctxt->input != NULL) &&
5278 (reader->ctxt->input->filename == NULL))
5279 reader->ctxt->input->filename = (char *)
5280 xmlStrdup((const xmlChar *) URL);
5281
5282 reader->doc = NULL;
5283
5284 return (0);
5285 }
5286
5287 /**
5288 * xmlTextReaderByteConsumed:
5289 * @reader: an XML reader
5290 *
5291 * This function provides the current index of the parser used
5292 * by the reader, relative to the start of the current entity.
5293 * This function actually just wraps a call to xmlBytesConsumed()
5294 * for the parser context associated with the reader.
5295 * See xmlBytesConsumed() for more information.
5296 *
5297 * Returns the index in bytes from the beginning of the entity or -1
5298 * in case the index could not be computed.
5299 */
5300 long
xmlTextReaderByteConsumed(xmlTextReaderPtr reader)5301 xmlTextReaderByteConsumed(xmlTextReaderPtr reader) {
5302 if ((reader == NULL) || (reader->ctxt == NULL))
5303 return(-1);
5304 return(xmlByteConsumed(reader->ctxt));
5305 }
5306
5307
5308 /**
5309 * xmlReaderWalker:
5310 * @doc: a preparsed document
5311 *
5312 * Create an xmltextReader for a preparsed document.
5313 *
5314 * Returns the new reader or NULL in case of error.
5315 */
5316 xmlTextReaderPtr
xmlReaderWalker(xmlDocPtr doc)5317 xmlReaderWalker(xmlDocPtr doc)
5318 {
5319 xmlTextReaderPtr ret;
5320
5321 if (doc == NULL)
5322 return(NULL);
5323
5324 ret = xmlMalloc(sizeof(xmlTextReader));
5325 if (ret == NULL) {
5326 xmlGenericError(xmlGenericErrorContext,
5327 "xmlNewTextReader : malloc failed\n");
5328 return(NULL);
5329 }
5330 memset(ret, 0, sizeof(xmlTextReader));
5331 ret->entNr = 0;
5332 ret->input = NULL;
5333 ret->mode = XML_TEXTREADER_MODE_INITIAL;
5334 ret->node = NULL;
5335 ret->curnode = NULL;
5336 ret->base = 0;
5337 ret->cur = 0;
5338 ret->allocs = XML_TEXTREADER_CTXT;
5339 ret->doc = doc;
5340 ret->state = XML_TEXTREADER_START;
5341 ret->dict = xmlDictCreate();
5342 return(ret);
5343 }
5344
5345 /**
5346 * xmlReaderForDoc:
5347 * @cur: a pointer to a zero terminated string
5348 * @URL: the base URL to use for the document
5349 * @encoding: the document encoding, or NULL
5350 * @options: a combination of xmlParserOption
5351 *
5352 * Create an xmltextReader for an XML in-memory document.
5353 * The parsing flags @options are a combination of xmlParserOption.
5354 *
5355 * Returns the new reader or NULL in case of error.
5356 */
5357 xmlTextReaderPtr
xmlReaderForDoc(const xmlChar * cur,const char * URL,const char * encoding,int options)5358 xmlReaderForDoc(const xmlChar * cur, const char *URL, const char *encoding,
5359 int options)
5360 {
5361 int len;
5362
5363 if (cur == NULL)
5364 return (NULL);
5365 len = xmlStrlen(cur);
5366
5367 return (xmlReaderForMemory
5368 ((const char *) cur, len, URL, encoding, options));
5369 }
5370
5371 /**
5372 * xmlReaderForFile:
5373 * @filename: a file or URL
5374 * @encoding: the document encoding, or NULL
5375 * @options: a combination of xmlParserOption
5376 *
5377 * parse an XML file from the filesystem or the network.
5378 * The parsing flags @options are a combination of xmlParserOption.
5379 *
5380 * Returns the new reader or NULL in case of error.
5381 */
5382 xmlTextReaderPtr
xmlReaderForFile(const char * filename,const char * encoding,int options)5383 xmlReaderForFile(const char *filename, const char *encoding, int options)
5384 {
5385 xmlTextReaderPtr reader;
5386
5387 reader = xmlNewTextReaderFilename(filename);
5388 if (reader == NULL)
5389 return (NULL);
5390 xmlTextReaderSetup(reader, NULL, NULL, encoding, options);
5391 return (reader);
5392 }
5393
5394 /**
5395 * xmlReaderForMemory:
5396 * @buffer: a pointer to a char array
5397 * @size: the size of the array
5398 * @URL: the base URL to use for the document
5399 * @encoding: the document encoding, or NULL
5400 * @options: a combination of xmlParserOption
5401 *
5402 * Create an xmltextReader for an XML in-memory document.
5403 * The parsing flags @options are a combination of xmlParserOption.
5404 *
5405 * Returns the new reader or NULL in case of error.
5406 */
5407 xmlTextReaderPtr
xmlReaderForMemory(const char * buffer,int size,const char * URL,const char * encoding,int options)5408 xmlReaderForMemory(const char *buffer, int size, const char *URL,
5409 const char *encoding, int options)
5410 {
5411 xmlTextReaderPtr reader;
5412 xmlParserInputBufferPtr buf;
5413
5414 buf = xmlParserInputBufferCreateStatic(buffer, size,
5415 XML_CHAR_ENCODING_NONE);
5416 if (buf == NULL) {
5417 return (NULL);
5418 }
5419 reader = xmlNewTextReader(buf, URL);
5420 if (reader == NULL) {
5421 xmlFreeParserInputBuffer(buf);
5422 return (NULL);
5423 }
5424 reader->allocs |= XML_TEXTREADER_INPUT;
5425 xmlTextReaderSetup(reader, NULL, URL, encoding, options);
5426 return (reader);
5427 }
5428
5429 /**
5430 * xmlReaderForFd:
5431 * @fd: an open file descriptor
5432 * @URL: the base URL to use for the document
5433 * @encoding: the document encoding, or NULL
5434 * @options: a combination of xmlParserOption
5435 *
5436 * Create an xmltextReader for an XML from a file descriptor.
5437 * The parsing flags @options are a combination of xmlParserOption.
5438 * NOTE that the file descriptor will not be closed when the
5439 * reader is closed or reset.
5440 *
5441 * Returns the new reader or NULL in case of error.
5442 */
5443 xmlTextReaderPtr
xmlReaderForFd(int fd,const char * URL,const char * encoding,int options)5444 xmlReaderForFd(int fd, const char *URL, const char *encoding, int options)
5445 {
5446 xmlTextReaderPtr reader;
5447 xmlParserInputBufferPtr input;
5448
5449 if (fd < 0)
5450 return (NULL);
5451
5452 input = xmlParserInputBufferCreateFd(fd, XML_CHAR_ENCODING_NONE);
5453 if (input == NULL)
5454 return (NULL);
5455 input->closecallback = NULL;
5456 reader = xmlNewTextReader(input, URL);
5457 if (reader == NULL) {
5458 xmlFreeParserInputBuffer(input);
5459 return (NULL);
5460 }
5461 reader->allocs |= XML_TEXTREADER_INPUT;
5462 xmlTextReaderSetup(reader, NULL, URL, encoding, options);
5463 return (reader);
5464 }
5465
5466 /**
5467 * xmlReaderForIO:
5468 * @ioread: an I/O read function
5469 * @ioclose: an I/O close function
5470 * @ioctx: an I/O handler
5471 * @URL: the base URL to use for the document
5472 * @encoding: the document encoding, or NULL
5473 * @options: a combination of xmlParserOption
5474 *
5475 * Create an xmltextReader for an XML document from I/O functions and source.
5476 * The parsing flags @options are a combination of xmlParserOption.
5477 *
5478 * Returns the new reader or NULL in case of error.
5479 */
5480 xmlTextReaderPtr
xmlReaderForIO(xmlInputReadCallback ioread,xmlInputCloseCallback ioclose,void * ioctx,const char * URL,const char * encoding,int options)5481 xmlReaderForIO(xmlInputReadCallback ioread, xmlInputCloseCallback ioclose,
5482 void *ioctx, const char *URL, const char *encoding,
5483 int options)
5484 {
5485 xmlTextReaderPtr reader;
5486 xmlParserInputBufferPtr input;
5487
5488 if (ioread == NULL)
5489 return (NULL);
5490
5491 input = xmlParserInputBufferCreateIO(ioread, ioclose, ioctx,
5492 XML_CHAR_ENCODING_NONE);
5493 if (input == NULL) {
5494 if (ioclose != NULL)
5495 ioclose(ioctx);
5496 return (NULL);
5497 }
5498 reader = xmlNewTextReader(input, URL);
5499 if (reader == NULL) {
5500 xmlFreeParserInputBuffer(input);
5501 return (NULL);
5502 }
5503 reader->allocs |= XML_TEXTREADER_INPUT;
5504 xmlTextReaderSetup(reader, NULL, URL, encoding, options);
5505 return (reader);
5506 }
5507
5508 /**
5509 * xmlReaderNewWalker:
5510 * @reader: an XML reader
5511 * @doc: a preparsed document
5512 *
5513 * Setup an xmltextReader to parse a preparsed XML document.
5514 * This reuses the existing @reader xmlTextReader.
5515 *
5516 * Returns 0 in case of success and -1 in case of error
5517 */
5518 int
xmlReaderNewWalker(xmlTextReaderPtr reader,xmlDocPtr doc)5519 xmlReaderNewWalker(xmlTextReaderPtr reader, xmlDocPtr doc)
5520 {
5521 if (doc == NULL)
5522 return (-1);
5523 if (reader == NULL)
5524 return (-1);
5525
5526 if (reader->input != NULL) {
5527 xmlFreeParserInputBuffer(reader->input);
5528 }
5529 if (reader->ctxt != NULL) {
5530 xmlCtxtReset(reader->ctxt);
5531 }
5532
5533 reader->entNr = 0;
5534 reader->input = NULL;
5535 reader->mode = XML_TEXTREADER_MODE_INITIAL;
5536 reader->node = NULL;
5537 reader->curnode = NULL;
5538 reader->base = 0;
5539 reader->cur = 0;
5540 reader->allocs = XML_TEXTREADER_CTXT;
5541 reader->doc = doc;
5542 reader->state = XML_TEXTREADER_START;
5543 if (reader->dict == NULL) {
5544 if ((reader->ctxt != NULL) && (reader->ctxt->dict != NULL))
5545 reader->dict = reader->ctxt->dict;
5546 else
5547 reader->dict = xmlDictCreate();
5548 }
5549 return(0);
5550 }
5551
5552 /**
5553 * xmlReaderNewDoc:
5554 * @reader: an XML reader
5555 * @cur: a pointer to a zero terminated string
5556 * @URL: the base URL to use for the document
5557 * @encoding: the document encoding, or NULL
5558 * @options: a combination of xmlParserOption
5559 *
5560 * Setup an xmltextReader to parse an XML in-memory document.
5561 * The parsing flags @options are a combination of xmlParserOption.
5562 * This reuses the existing @reader xmlTextReader.
5563 *
5564 * Returns 0 in case of success and -1 in case of error
5565 */
5566 int
xmlReaderNewDoc(xmlTextReaderPtr reader,const xmlChar * cur,const char * URL,const char * encoding,int options)5567 xmlReaderNewDoc(xmlTextReaderPtr reader, const xmlChar * cur,
5568 const char *URL, const char *encoding, int options)
5569 {
5570
5571 int len;
5572
5573 if (cur == NULL)
5574 return (-1);
5575 if (reader == NULL)
5576 return (-1);
5577
5578 len = xmlStrlen(cur);
5579 return (xmlReaderNewMemory(reader, (const char *)cur, len,
5580 URL, encoding, options));
5581 }
5582
5583 /**
5584 * xmlReaderNewFile:
5585 * @reader: an XML reader
5586 * @filename: a file or URL
5587 * @encoding: the document encoding, or NULL
5588 * @options: a combination of xmlParserOption
5589 *
5590 * parse an XML file from the filesystem or the network.
5591 * The parsing flags @options are a combination of xmlParserOption.
5592 * This reuses the existing @reader xmlTextReader.
5593 *
5594 * Returns 0 in case of success and -1 in case of error
5595 */
5596 int
xmlReaderNewFile(xmlTextReaderPtr reader,const char * filename,const char * encoding,int options)5597 xmlReaderNewFile(xmlTextReaderPtr reader, const char *filename,
5598 const char *encoding, int options)
5599 {
5600 xmlParserInputBufferPtr input;
5601
5602 if (filename == NULL)
5603 return (-1);
5604 if (reader == NULL)
5605 return (-1);
5606
5607 input =
5608 xmlParserInputBufferCreateFilename(filename,
5609 XML_CHAR_ENCODING_NONE);
5610 if (input == NULL)
5611 return (-1);
5612 return (xmlTextReaderSetup(reader, input, filename, encoding, options));
5613 }
5614
5615 /**
5616 * xmlReaderNewMemory:
5617 * @reader: an XML reader
5618 * @buffer: a pointer to a char array
5619 * @size: the size of the array
5620 * @URL: the base URL to use for the document
5621 * @encoding: the document encoding, or NULL
5622 * @options: a combination of xmlParserOption
5623 *
5624 * Setup an xmltextReader to parse an XML in-memory document.
5625 * The parsing flags @options are a combination of xmlParserOption.
5626 * This reuses the existing @reader xmlTextReader.
5627 *
5628 * Returns 0 in case of success and -1 in case of error
5629 */
5630 int
xmlReaderNewMemory(xmlTextReaderPtr reader,const char * buffer,int size,const char * URL,const char * encoding,int options)5631 xmlReaderNewMemory(xmlTextReaderPtr reader, const char *buffer, int size,
5632 const char *URL, const char *encoding, int options)
5633 {
5634 xmlParserInputBufferPtr input;
5635
5636 if (reader == NULL)
5637 return (-1);
5638 if (buffer == NULL)
5639 return (-1);
5640
5641 input = xmlParserInputBufferCreateStatic(buffer, size,
5642 XML_CHAR_ENCODING_NONE);
5643 if (input == NULL) {
5644 return (-1);
5645 }
5646 return (xmlTextReaderSetup(reader, input, URL, encoding, options));
5647 }
5648
5649 /**
5650 * xmlReaderNewFd:
5651 * @reader: an XML reader
5652 * @fd: an open file descriptor
5653 * @URL: the base URL to use for the document
5654 * @encoding: the document encoding, or NULL
5655 * @options: a combination of xmlParserOption
5656 *
5657 * Setup an xmltextReader to parse an XML from a file descriptor.
5658 * NOTE that the file descriptor will not be closed when the
5659 * reader is closed or reset.
5660 * The parsing flags @options are a combination of xmlParserOption.
5661 * This reuses the existing @reader xmlTextReader.
5662 *
5663 * Returns 0 in case of success and -1 in case of error
5664 */
5665 int
xmlReaderNewFd(xmlTextReaderPtr reader,int fd,const char * URL,const char * encoding,int options)5666 xmlReaderNewFd(xmlTextReaderPtr reader, int fd,
5667 const char *URL, const char *encoding, int options)
5668 {
5669 xmlParserInputBufferPtr input;
5670
5671 if (fd < 0)
5672 return (-1);
5673 if (reader == NULL)
5674 return (-1);
5675
5676 input = xmlParserInputBufferCreateFd(fd, XML_CHAR_ENCODING_NONE);
5677 if (input == NULL)
5678 return (-1);
5679 input->closecallback = NULL;
5680 return (xmlTextReaderSetup(reader, input, URL, encoding, options));
5681 }
5682
5683 /**
5684 * xmlReaderNewIO:
5685 * @reader: an XML reader
5686 * @ioread: an I/O read function
5687 * @ioclose: an I/O close function
5688 * @ioctx: an I/O handler
5689 * @URL: the base URL to use for the document
5690 * @encoding: the document encoding, or NULL
5691 * @options: a combination of xmlParserOption
5692 *
5693 * Setup an xmltextReader to parse an XML document from I/O functions
5694 * and source.
5695 * The parsing flags @options are a combination of xmlParserOption.
5696 * This reuses the existing @reader xmlTextReader.
5697 *
5698 * Returns 0 in case of success and -1 in case of error
5699 */
5700 int
xmlReaderNewIO(xmlTextReaderPtr reader,xmlInputReadCallback ioread,xmlInputCloseCallback ioclose,void * ioctx,const char * URL,const char * encoding,int options)5701 xmlReaderNewIO(xmlTextReaderPtr reader, xmlInputReadCallback ioread,
5702 xmlInputCloseCallback ioclose, void *ioctx,
5703 const char *URL, const char *encoding, int options)
5704 {
5705 xmlParserInputBufferPtr input;
5706
5707 if (ioread == NULL)
5708 return (-1);
5709 if (reader == NULL)
5710 return (-1);
5711
5712 input = xmlParserInputBufferCreateIO(ioread, ioclose, ioctx,
5713 XML_CHAR_ENCODING_NONE);
5714 if (input == NULL) {
5715 if (ioclose != NULL)
5716 ioclose(ioctx);
5717 return (-1);
5718 }
5719 return (xmlTextReaderSetup(reader, input, URL, encoding, options));
5720 }
5721
5722 /************************************************************************
5723 * *
5724 * Utilities *
5725 * *
5726 ************************************************************************/
5727 #ifdef NOT_USED_YET
5728
5729 /**
5730 * xmlBase64Decode:
5731 * @in: the input buffer
5732 * @inlen: the size of the input (in), the size read from it (out)
5733 * @to: the output buffer
5734 * @tolen: the size of the output (in), the size written to (out)
5735 *
5736 * Base64 decoder, reads from @in and save in @to
5737 * TODO: tell jody when this is actually exported
5738 *
5739 * Returns 0 if all the input was consumer, 1 if the Base64 end was reached,
5740 * 2 if there wasn't enough space on the output or -1 in case of error.
5741 */
5742 static int
xmlBase64Decode(const unsigned char * in,unsigned long * inlen,unsigned char * to,unsigned long * tolen)5743 xmlBase64Decode(const unsigned char *in, unsigned long *inlen,
5744 unsigned char *to, unsigned long *tolen)
5745 {
5746 unsigned long incur; /* current index in in[] */
5747
5748 unsigned long inblk; /* last block index in in[] */
5749
5750 unsigned long outcur; /* current index in out[] */
5751
5752 unsigned long inmax; /* size of in[] */
5753
5754 unsigned long outmax; /* size of out[] */
5755
5756 unsigned char cur; /* the current value read from in[] */
5757
5758 unsigned char intmp[4], outtmp[4]; /* temporary buffers for the convert */
5759
5760 int nbintmp; /* number of byte in intmp[] */
5761
5762 int is_ignore; /* cur should be ignored */
5763
5764 int is_end = 0; /* the end of the base64 was found */
5765
5766 int retval = 1;
5767
5768 int i;
5769
5770 if ((in == NULL) || (inlen == NULL) || (to == NULL) || (tolen == NULL))
5771 return (-1);
5772
5773 incur = 0;
5774 inblk = 0;
5775 outcur = 0;
5776 inmax = *inlen;
5777 outmax = *tolen;
5778 nbintmp = 0;
5779
5780 while (1) {
5781 if (incur >= inmax)
5782 break;
5783 cur = in[incur++];
5784 is_ignore = 0;
5785 if ((cur >= 'A') && (cur <= 'Z'))
5786 cur = cur - 'A';
5787 else if ((cur >= 'a') && (cur <= 'z'))
5788 cur = cur - 'a' + 26;
5789 else if ((cur >= '0') && (cur <= '9'))
5790 cur = cur - '0' + 52;
5791 else if (cur == '+')
5792 cur = 62;
5793 else if (cur == '/')
5794 cur = 63;
5795 else if (cur == '.')
5796 cur = 0;
5797 else if (cur == '=') /*no op , end of the base64 stream */
5798 is_end = 1;
5799 else {
5800 is_ignore = 1;
5801 if (nbintmp == 0)
5802 inblk = incur;
5803 }
5804
5805 if (!is_ignore) {
5806 int nbouttmp = 3;
5807
5808 int is_break = 0;
5809
5810 if (is_end) {
5811 if (nbintmp == 0)
5812 break;
5813 if ((nbintmp == 1) || (nbintmp == 2))
5814 nbouttmp = 1;
5815 else
5816 nbouttmp = 2;
5817 nbintmp = 3;
5818 is_break = 1;
5819 }
5820 intmp[nbintmp++] = cur;
5821 /*
5822 * if intmp is full, push the 4byte sequence as a 3 byte
5823 * sequence out
5824 */
5825 if (nbintmp == 4) {
5826 nbintmp = 0;
5827 outtmp[0] = (intmp[0] << 2) | ((intmp[1] & 0x30) >> 4);
5828 outtmp[1] =
5829 ((intmp[1] & 0x0F) << 4) | ((intmp[2] & 0x3C) >> 2);
5830 outtmp[2] = ((intmp[2] & 0x03) << 6) | (intmp[3] & 0x3F);
5831 if (outcur + 3 >= outmax) {
5832 retval = 2;
5833 break;
5834 }
5835
5836 for (i = 0; i < nbouttmp; i++)
5837 to[outcur++] = outtmp[i];
5838 inblk = incur;
5839 }
5840
5841 if (is_break) {
5842 retval = 0;
5843 break;
5844 }
5845 }
5846 }
5847
5848 *tolen = outcur;
5849 *inlen = inblk;
5850 return (retval);
5851 }
5852
5853 /*
5854 * Test routine for the xmlBase64Decode function
5855 */
5856 #if 0
5857 int
5858 main(int argc, char **argv)
5859 {
5860 char *input = " VW4 gcGV0 \n aXQgdGVzdCAuCg== ";
5861
5862 char output[100];
5863
5864 char output2[100];
5865
5866 char output3[100];
5867
5868 unsigned long inlen = strlen(input);
5869
5870 unsigned long outlen = 100;
5871
5872 int ret;
5873
5874 unsigned long cons, tmp, tmp2, prod;
5875
5876 /*
5877 * Direct
5878 */
5879 ret = xmlBase64Decode(input, &inlen, output, &outlen);
5880
5881 output[outlen] = 0;
5882 printf("ret: %d, inlen: %ld , outlen: %ld, output: '%s'\n", ret, inlen,
5883 outlen, output)indent: Standard input:179: Error:Unmatched #endif
5884 ;
5885
5886 /*
5887 * output chunking
5888 */
5889 cons = 0;
5890 prod = 0;
5891 while (cons < inlen) {
5892 tmp = 5;
5893 tmp2 = inlen - cons;
5894
5895 printf("%ld %ld\n", cons, prod);
5896 ret = xmlBase64Decode(&input[cons], &tmp2, &output2[prod], &tmp);
5897 cons += tmp2;
5898 prod += tmp;
5899 printf("%ld %ld\n", cons, prod);
5900 }
5901 output2[outlen] = 0;
5902 printf("ret: %d, cons: %ld , prod: %ld, output: '%s'\n", ret, cons,
5903 prod, output2);
5904
5905 /*
5906 * input chunking
5907 */
5908 cons = 0;
5909 prod = 0;
5910 while (cons < inlen) {
5911 tmp = 100 - prod;
5912 tmp2 = inlen - cons;
5913 if (tmp2 > 5)
5914 tmp2 = 5;
5915
5916 printf("%ld %ld\n", cons, prod);
5917 ret = xmlBase64Decode(&input[cons], &tmp2, &output3[prod], &tmp);
5918 cons += tmp2;
5919 prod += tmp;
5920 printf("%ld %ld\n", cons, prod);
5921 }
5922 output3[outlen] = 0;
5923 printf("ret: %d, cons: %ld , prod: %ld, output: '%s'\n", ret, cons,
5924 prod, output3);
5925 return (0);
5926
5927 }
5928 #endif
5929 #endif /* NOT_USED_YET */
5930 #define bottom_xmlreader
5931 #include "elfgcchack.h"
5932 #endif /* LIBXML_READER_ENABLED */
5933