xinclude.c@ 51892

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1	/*
2	* xinclude.c : Code to implement XInclude processing
3	*
4	* World Wide Web Consortium W3C Last Call Working Draft 10 November 2003
5	* http://www.w3.org/TR/2003/WD-xinclude-20031110
6	*
7	* See Copyright for the status of this software.
8	*
9	* [email protected]
10	*/
11
12	#define IN_LIBXML
13	#include "libxml.h"
14
15	#include <string.h>
16	#include <libxml/xmlmemory.h>
17	#include <libxml/tree.h>
18	#include <libxml/parser.h>
19	#include <libxml/uri.h>
20	#include <libxml/xpointer.h>
21	#include <libxml/parserInternals.h>
22	#include <libxml/xmlerror.h>
23	#include <libxml/encoding.h>
24	#include <libxml/globals.h>
25
26	#ifdef LIBXML_XINCLUDE_ENABLED
27	#include <libxml/xinclude.h>
28
29
30	#define XINCLUDE_MAX_DEPTH 40
31
32	/* #define DEBUG_XINCLUDE */
33	#ifdef DEBUG_XINCLUDE
34	#ifdef LIBXML_DEBUG_ENABLED
35	#include <libxml/debugXML.h>
36	#endif
37	#endif
38
39	/************************************************************************
40	* *
41	* XInclude context handling *
42	* *
43	************************************************************************/
44
45	/*
46	* An XInclude context
47	*/
48	typedef xmlChar *xmlURL;
49
50	typedef struct _xmlXIncludeRef xmlXIncludeRef;
51	typedef xmlXIncludeRef *xmlXIncludeRefPtr;
52	struct _xmlXIncludeRef {
53	xmlChar URI; / the fully resolved resource URL */
54	xmlChar fragment; / the fragment in the URI */
55	xmlDocPtr doc; /* the parsed document */
56	xmlNodePtr ref; /* the node making the reference in the source */
57	xmlNodePtr inc; /* the included copy */
58	int xml; /* xml or txt */
59	int count; /* how many refs use that specific doc */
60	xmlXPathObjectPtr xptr; /* the xpointer if needed */
61	int emptyFb; /* flag to show fallback empty */
62	};
63
64	struct _xmlXIncludeCtxt {
65	xmlDocPtr doc; /* the source document */
66	int incBase; /* the first include for this document */
67	int incNr; /* number of includes */
68	int incMax; /* size of includes tab */
69	xmlXIncludeRefPtr incTab; / array of included references */
70
71	int txtNr; /* number of unparsed documents */
72	int txtMax; /* size of unparsed documents tab */
73	xmlNodePtr txtTab; / array of unparsed text nodes */
74	xmlURL txturlTab; / array of unparsed text URLs */
75
76	xmlChar * url; /* the current URL processed */
77	int urlNr; /* number of URLs stacked */
78	int urlMax; /* size of URL stack */
79	xmlChar * urlTab; / URL stack */
80
81	int nbErrors; /* the number of errors detected */
82	int legacy; /* using XINCLUDE_OLD_NS */
83	int parseFlags; /* the flags used for parsing XML documents */
84	xmlChar * base; /* the current xml:base */
85
86	void _private; / application data */
87	};
88
89	static int
90	xmlXIncludeDoProcess(xmlXIncludeCtxtPtr ctxt, xmlDocPtr doc, xmlNodePtr tree);
91
92
93	/************************************************************************
94	* *
95	* XInclude error handler *
96	* *
97	************************************************************************/
98
99	/**
100	* xmlXIncludeErrMemory:
101	* @extra: extra information
102	*
103	* Handle an out of memory condition
104	*/
105	static void
106	xmlXIncludeErrMemory(xmlXIncludeCtxtPtr ctxt, xmlNodePtr node,
107	const char *extra)
108	{
109	if (ctxt != NULL)
110	ctxt->nbErrors++;
111	__xmlRaiseError(NULL, NULL, NULL, ctxt, node, XML_FROM_XINCLUDE,
112	XML_ERR_NO_MEMORY, XML_ERR_ERROR, NULL, 0,
113	extra, NULL, NULL, 0, 0,
114	"Memory allocation failed : %s\n", extra);
115	}
116
117	/**
118	* xmlXIncludeErr:
119	* @ctxt: the XInclude context
120	* @node: the context node
121	* @msg: the error message
122	* @extra: extra information
123	*
124	* Handle an XInclude error
125	*/
126	static void
127	xmlXIncludeErr(xmlXIncludeCtxtPtr ctxt, xmlNodePtr node, int error,
128	const char msg, const xmlChar extra)
129	{
130	if (ctxt != NULL)
131	ctxt->nbErrors++;
132	__xmlRaiseError(NULL, NULL, NULL, ctxt, node, XML_FROM_XINCLUDE,
133	error, XML_ERR_ERROR, NULL, 0,
134	(const char *) extra, NULL, NULL, 0, 0,
135	msg, (const char *) extra);
136	}
137
138	#if 0
139	/**
140	* xmlXIncludeWarn:
141	* @ctxt: the XInclude context
142	* @node: the context node
143	* @msg: the error message
144	* @extra: extra information
145	*
146	* Emit an XInclude warning.
147	*/
148	static void
149	xmlXIncludeWarn(xmlXIncludeCtxtPtr ctxt, xmlNodePtr node, int error,
150	const char msg, const xmlChar extra)
151	{
152	__xmlRaiseError(NULL, NULL, NULL, ctxt, node, XML_FROM_XINCLUDE,
153	error, XML_ERR_WARNING, NULL, 0,
154	(const char *) extra, NULL, NULL, 0, 0,
155	msg, (const char *) extra);
156	}
157	#endif
158
159	/**
160	* xmlXIncludeGetProp:
161	* @ctxt: the XInclude context
162	* @cur: the node
163	* @name: the attribute name
164	*
165	* Get an XInclude attribute
166	*
167	* Returns the value (to be freed) or NULL if not found
168	*/
169	static xmlChar *
170	xmlXIncludeGetProp(xmlXIncludeCtxtPtr ctxt, xmlNodePtr cur,
171	const xmlChar *name) {
172	xmlChar *ret;
173
174	ret = xmlGetNsProp(cur, XINCLUDE_NS, name);
175	if (ret != NULL)
176	return(ret);
177	if (ctxt->legacy != 0) {
178	ret = xmlGetNsProp(cur, XINCLUDE_OLD_NS, name);
179	if (ret != NULL)
180	return(ret);
181	}
182	ret = xmlGetProp(cur, name);
183	return(ret);
184	}
185	/**
186	* xmlXIncludeFreeRef:
187	* @ref: the XInclude reference
188	*
189	* Free an XInclude reference
190	*/
191	static void
192	xmlXIncludeFreeRef(xmlXIncludeRefPtr ref) {
193	if (ref == NULL)
194	return;
195	#ifdef DEBUG_XINCLUDE
196	xmlGenericError(xmlGenericErrorContext, "Freeing ref\n");
197	#endif
198	if (ref->doc != NULL) {
199	#ifdef DEBUG_XINCLUDE
200	xmlGenericError(xmlGenericErrorContext, "Freeing doc %s\n", ref->URI);
201	#endif
202	xmlFreeDoc(ref->doc);
203	}
204	if (ref->URI != NULL)
205	xmlFree(ref->URI);
206	if (ref->fragment != NULL)
207	xmlFree(ref->fragment);
208	if (ref->xptr != NULL)
209	xmlXPathFreeObject(ref->xptr);
210	xmlFree(ref);
211	}
212
213	/**
214	* xmlXIncludeNewRef:
215	* @ctxt: the XInclude context
216	* @URI: the resource URI
217	*
218	* Creates a new reference within an XInclude context
219	*
220	* Returns the new set
221	*/
222	static xmlXIncludeRefPtr
223	xmlXIncludeNewRef(xmlXIncludeCtxtPtr ctxt, const xmlChar *URI,
224	xmlNodePtr ref) {
225	xmlXIncludeRefPtr ret;
226
227	#ifdef DEBUG_XINCLUDE
228	xmlGenericError(xmlGenericErrorContext, "New ref %s\n", URI);
229	#endif
230	ret = (xmlXIncludeRefPtr) xmlMalloc(sizeof(xmlXIncludeRef));
231	if (ret == NULL) {
232	xmlXIncludeErrMemory(ctxt, ref, "growing XInclude context");
233	return(NULL);
234	}
235	memset(ret, 0, sizeof(xmlXIncludeRef));
236	if (URI == NULL)
237	ret->URI = NULL;
238	else
239	ret->URI = xmlStrdup(URI);
240	ret->fragment = NULL;
241	ret->ref = ref;
242	ret->doc = NULL;
243	ret->count = 0;
244	ret->xml = 0;
245	ret->inc = NULL;
246	if (ctxt->incMax == 0) {
247	ctxt->incMax = 4;
248	ctxt->incTab = (xmlXIncludeRefPtr ) xmlMalloc(ctxt->incMax
249	sizeof(ctxt->incTab[0]));
250	if (ctxt->incTab == NULL) {
251	xmlXIncludeErrMemory(ctxt, ref, "growing XInclude context");
252	xmlXIncludeFreeRef(ret);
253	return(NULL);
254	}
255	}
256	if (ctxt->incNr >= ctxt->incMax) {
257	ctxt->incMax *= 2;
258	ctxt->incTab = (xmlXIncludeRefPtr *) xmlRealloc(ctxt->incTab,
259	ctxt->incMax * sizeof(ctxt->incTab[0]));
260	if (ctxt->incTab == NULL) {
261	xmlXIncludeErrMemory(ctxt, ref, "growing XInclude context");
262	xmlXIncludeFreeRef(ret);
263	return(NULL);
264	}
265	}
266	ctxt->incTab[ctxt->incNr++] = ret;
267	return(ret);
268	}
269
270	/**
271	* xmlXIncludeNewContext:
272	* @doc: an XML Document
273	*
274	* Creates a new XInclude context
275	*
276	* Returns the new set
277	*/
278	xmlXIncludeCtxtPtr
279	xmlXIncludeNewContext(xmlDocPtr doc) {
280	xmlXIncludeCtxtPtr ret;
281
282	#ifdef DEBUG_XINCLUDE
283	xmlGenericError(xmlGenericErrorContext, "New context\n");
284	#endif
285	if (doc == NULL)
286	return(NULL);
287	ret = (xmlXIncludeCtxtPtr) xmlMalloc(sizeof(xmlXIncludeCtxt));
288	if (ret == NULL) {
289	xmlXIncludeErrMemory(NULL, (xmlNodePtr) doc,
290	"creating XInclude context");
291	return(NULL);
292	}
293	memset(ret, 0, sizeof(xmlXIncludeCtxt));
294	ret->doc = doc;
295	ret->incNr = 0;
296	ret->incBase = 0;
297	ret->incMax = 0;
298	ret->incTab = NULL;
299	ret->nbErrors = 0;
300	return(ret);
301	}
302
303	/**
304	* xmlXIncludeURLPush:
305	* @ctxt: the parser context
306	* @value: the url
307	*
308	* Pushes a new url on top of the url stack
309	*
310	* Returns -1 in case of error, the index in the stack otherwise
311	*/
312	static int
313	xmlXIncludeURLPush(xmlXIncludeCtxtPtr ctxt,
314	const xmlChar *value)
315	{
316	if (ctxt->urlNr > XINCLUDE_MAX_DEPTH) {
317	xmlXIncludeErr(ctxt, NULL, XML_XINCLUDE_RECURSION,
318	"detected a recursion in %s\n", value);
319	return(-1);
320	}
321	if (ctxt->urlTab == NULL) {
322	ctxt->urlMax = 4;
323	ctxt->urlNr = 0;
324	ctxt->urlTab = (xmlChar * *) xmlMalloc(
325	ctxt->urlMax * sizeof(ctxt->urlTab[0]));
326	if (ctxt->urlTab == NULL) {
327	xmlXIncludeErrMemory(ctxt, NULL, "adding URL");
328	return (-1);
329	}
330	}
331	if (ctxt->urlNr >= ctxt->urlMax) {
332	ctxt->urlMax *= 2;
333	ctxt->urlTab =
334	(xmlChar * *) xmlRealloc(ctxt->urlTab,
335	ctxt->urlMax *
336	sizeof(ctxt->urlTab[0]));
337	if (ctxt->urlTab == NULL) {
338	xmlXIncludeErrMemory(ctxt, NULL, "adding URL");
339	return (-1);
340	}
341	}
342	ctxt->url = ctxt->urlTab[ctxt->urlNr] = xmlStrdup(value);
343	return (ctxt->urlNr++);
344	}
345
346	/**
347	* xmlXIncludeURLPop:
348	* @ctxt: the parser context
349	*
350	* Pops the top URL from the URL stack
351	*/
352	static void
353	xmlXIncludeURLPop(xmlXIncludeCtxtPtr ctxt)
354	{
355	xmlChar * ret;
356
357	if (ctxt->urlNr <= 0)
358	return;
359	ctxt->urlNr--;
360	if (ctxt->urlNr > 0)
361	ctxt->url = ctxt->urlTab[ctxt->urlNr - 1];
362	else
363	ctxt->url = NULL;
364	ret = ctxt->urlTab[ctxt->urlNr];
365	ctxt->urlTab[ctxt->urlNr] = NULL;
366	if (ret != NULL)
367	xmlFree(ret);
368	}
369
370	/**
371	* xmlXIncludeFreeContext:
372	* @ctxt: the XInclude context
373	*
374	* Free an XInclude context
375	*/
376	void
377	xmlXIncludeFreeContext(xmlXIncludeCtxtPtr ctxt) {
378	int i;
379
380	#ifdef DEBUG_XINCLUDE
381	xmlGenericError(xmlGenericErrorContext, "Freeing context\n");
382	#endif
383	if (ctxt == NULL)
384	return;
385	while (ctxt->urlNr > 0)
386	xmlXIncludeURLPop(ctxt);
387	if (ctxt->urlTab != NULL)
388	xmlFree(ctxt->urlTab);
389	for (i = 0;i < ctxt->incNr;i++) {
390	if (ctxt->incTab[i] != NULL)
391	xmlXIncludeFreeRef(ctxt->incTab[i]);
392	}
393	if (ctxt->txturlTab != NULL) {
394	for (i = 0;i < ctxt->txtNr;i++) {
395	if (ctxt->txturlTab[i] != NULL)
396	xmlFree(ctxt->txturlTab[i]);
397	}
398	}
399	if (ctxt->incTab != NULL)
400	xmlFree(ctxt->incTab);
401	if (ctxt->txtTab != NULL)
402	xmlFree(ctxt->txtTab);
403	if (ctxt->txturlTab != NULL)
404	xmlFree(ctxt->txturlTab);
405	if (ctxt->base != NULL) {
406	xmlFree(ctxt->base);
407	}
408	xmlFree(ctxt);
409	}
410
411	/**
412	* xmlXIncludeParseFile:
413	* @ctxt: the XInclude context
414	* @URL: the URL or file path
415	*
416	* parse a document for XInclude
417	*/
418	static xmlDocPtr
419	xmlXIncludeParseFile(xmlXIncludeCtxtPtr ctxt, const char *URL) {
420	xmlDocPtr ret;
421	xmlParserCtxtPtr pctxt;
422	char *directory = NULL;
423	xmlParserInputPtr inputStream;
424
425	xmlInitParser();
426
427	pctxt = xmlNewParserCtxt();
428	if (pctxt == NULL) {
429	xmlXIncludeErrMemory(ctxt, NULL, "cannot allocate parser context");
430	return(NULL);
431	}
432
433	/*
434	* pass in the application data to the parser context.
435	*/
436	pctxt->_private = ctxt->_private;
437
438	/*
439	* try to ensure that new documents included are actually
440	* built with the same dictionary as the including document.
441	*/
442	if ((ctxt->doc != NULL) && (ctxt->doc->dict != NULL) &&
443	(pctxt->dict != NULL)) {
444	xmlDictFree(pctxt->dict);
445	pctxt->dict = ctxt->doc->dict;
446	xmlDictReference(pctxt->dict);
447	}
448
449	xmlCtxtUseOptions(pctxt, ctxt->parseFlags \| XML_PARSE_DTDLOAD);
450
451	inputStream = xmlLoadExternalEntity(URL, NULL, pctxt);
452	if (inputStream == NULL) {
453	xmlFreeParserCtxt(pctxt);
454	return(NULL);
455	}
456
457	inputPush(pctxt, inputStream);
458
459	if ((pctxt->directory == NULL) && (directory == NULL))
460	directory = xmlParserGetDirectory(URL);
461	if ((pctxt->directory == NULL) && (directory != NULL))
462	pctxt->directory = (char ) xmlStrdup((xmlChar ) directory);
463
464	pctxt->loadsubset \|= XML_DETECT_IDS;
465
466	xmlParseDocument(pctxt);
467
468	if (pctxt->wellFormed) {
469	ret = pctxt->myDoc;
470	}
471	else {
472	ret = NULL;
473	if (pctxt->myDoc != NULL)
474	xmlFreeDoc(pctxt->myDoc);
475	pctxt->myDoc = NULL;
476	}
477	xmlFreeParserCtxt(pctxt);
478
479	return(ret);
480	}
481
482	/**
483	* xmlXIncludeAddNode:
484	* @ctxt: the XInclude context
485	* @cur: the new node
486	*
487	* Add a new node to process to an XInclude context
488	*/
489	static int
490	xmlXIncludeAddNode(xmlXIncludeCtxtPtr ctxt, xmlNodePtr cur) {
491	xmlXIncludeRefPtr ref;
492	xmlURIPtr uri;
493	xmlChar *URL;
494	xmlChar *fragment = NULL;
495	xmlChar *href;
496	xmlChar *parse;
497	xmlChar *base;
498	xmlChar *URI;
499	int xml = 1, i; /* default Issue 64 */
500	int local = 0;
501
502
503	if (ctxt == NULL)
504	return(-1);
505	if (cur == NULL)
506	return(-1);
507
508	#ifdef DEBUG_XINCLUDE
509	xmlGenericError(xmlGenericErrorContext, "Add node\n");
510	#endif
511	/*
512	* read the attributes
513	*/
514	href = xmlXIncludeGetProp(ctxt, cur, XINCLUDE_HREF);
515	if (href == NULL) {
516	href = xmlStrdup(BAD_CAST ""); /* @@@@ href is now optional */
517	if (href == NULL)
518	return(-1);
519	local = 1;
520	}
521	if (href[0] == '#')
522	local = 1;
523	parse = xmlXIncludeGetProp(ctxt, cur, XINCLUDE_PARSE);
524	if (parse != NULL) {
525	if (xmlStrEqual(parse, XINCLUDE_PARSE_XML))
526	xml = 1;
527	else if (xmlStrEqual(parse, XINCLUDE_PARSE_TEXT))
528	xml = 0;
529	else {
530	xmlXIncludeErr(ctxt, cur, XML_XINCLUDE_PARSE_VALUE,
531	"invalid value %s for 'parse'\n", parse);
532	if (href != NULL)
533	xmlFree(href);
534	if (parse != NULL)
535	xmlFree(parse);
536	return(-1);
537	}
538	}
539
540	/*
541	* compute the URI
542	*/
543	base = xmlNodeGetBase(ctxt->doc, cur);
544	if (base == NULL) {
545	URI = xmlBuildURI(href, ctxt->doc->URL);
546	} else {
547	URI = xmlBuildURI(href, base);
548	}
549	if (URI == NULL) {
550	xmlChar *escbase;
551	xmlChar *eschref;
552	/*
553	* Some escaping may be needed
554	*/
555	escbase = xmlURIEscape(base);
556	eschref = xmlURIEscape(href);
557	URI = xmlBuildURI(eschref, escbase);
558	if (escbase != NULL)
559	xmlFree(escbase);
560	if (eschref != NULL)
561	xmlFree(eschref);
562	}
563	if (parse != NULL)
564	xmlFree(parse);
565	if (href != NULL)
566	xmlFree(href);
567	if (base != NULL)
568	xmlFree(base);
569	if (URI == NULL) {
570	xmlXIncludeErr(ctxt, cur, XML_XINCLUDE_HREF_URI,
571	"failed build URL\n", NULL);
572	return(-1);
573	}
574	fragment = xmlXIncludeGetProp(ctxt, cur, XINCLUDE_PARSE_XPOINTER);
575
576	/*
577	* Check the URL and remove any fragment identifier
578	*/
579	uri = xmlParseURI((const char *)URI);
580	if (uri == NULL) {
581	xmlXIncludeErr(ctxt, cur, XML_XINCLUDE_HREF_URI,
582	"invalid value URI %s\n", URI);
583	if (fragment != NULL)
584	xmlFree(fragment);
585	xmlFree(URI);
586	return(-1);
587	}
588
589	if (uri->fragment != NULL) {
590	if (ctxt->legacy != 0) {
591	if (fragment == NULL) {
592	fragment = (xmlChar *) uri->fragment;
593	} else {
594	xmlFree(uri->fragment);
595	}
596	} else {
597	xmlXIncludeErr(ctxt, cur, XML_XINCLUDE_FRAGMENT_ID,
598	"Invalid fragment identifier in URI %s use the xpointer attribute\n",
599	URI);
600	if (fragment != NULL)
601	xmlFree(fragment);
602	xmlFreeURI(uri);
603	xmlFree(URI);
604	return(-1);
605	}
606	uri->fragment = NULL;
607	}
608	URL = xmlSaveUri(uri);
609	xmlFreeURI(uri);
610	xmlFree(URI);
611	if (URL == NULL) {
612	xmlXIncludeErr(ctxt, cur, XML_XINCLUDE_HREF_URI,
613	"invalid value URI %s\n", URI);
614	if (fragment != NULL)
615	xmlFree(fragment);
616	return(-1);
617	}
618
619	/*
620	* Check the URL against the stack for recursions
621	*/
622	if ((!local) && (xml == 1)) {
623	for (i = 0;i < ctxt->urlNr;i++) {
624	if (xmlStrEqual(URL, ctxt->urlTab[i])) {
625	xmlXIncludeErr(ctxt, cur, XML_XINCLUDE_RECURSION,
626	"detected a recursion in %s\n", URL);
627	return(-1);
628	}
629	}
630	}
631
632	ref = xmlXIncludeNewRef(ctxt, URL, cur);
633	if (ref == NULL) {
634	return(-1);
635	}
636	ref->fragment = fragment;
637	ref->doc = NULL;
638	ref->xml = xml;
639	ref->count = 1;
640	xmlFree(URL);
641	return(0);
642	}
643
644	/**
645	* xmlXIncludeRecurseDoc:
646	* @ctxt: the XInclude context
647	* @doc: the new document
648	* @url: the associated URL
649	*
650	* The XInclude recursive nature is handled at this point.
651	*/
652	static void
653	xmlXIncludeRecurseDoc(xmlXIncludeCtxtPtr ctxt, xmlDocPtr doc,
654	const xmlURL url ATTRIBUTE_UNUSED) {
655	xmlXIncludeCtxtPtr newctxt;
656	int i;
657
658	/*
659	* Avoid recursion in already substitued resources
660	for (i = 0;i < ctxt->urlNr;i++) {
661	if (xmlStrEqual(doc->URL, ctxt->urlTab[i]))
662	return;
663	}
664	*/
665
666	#ifdef DEBUG_XINCLUDE
667	xmlGenericError(xmlGenericErrorContext, "Recursing in doc %s\n", doc->URL);
668	#endif
669	/*
670	* Handle recursion here.
671	*/
672
673	newctxt = xmlXIncludeNewContext(doc);
674	if (newctxt != NULL) {
675	/*
676	* Copy the private user data
677	*/
678	newctxt->_private = ctxt->_private;
679	/*
680	* Copy the existing document set
681	*/
682	newctxt->incMax = ctxt->incMax;
683	newctxt->incNr = ctxt->incNr;
684	newctxt->incTab = (xmlXIncludeRefPtr ) xmlMalloc(newctxt->incMax
685	sizeof(newctxt->incTab[0]));
686	if (newctxt->incTab == NULL) {
687	xmlXIncludeErrMemory(ctxt, (xmlNodePtr) doc, "processing doc");
688	xmlFree(newctxt);
689	return;
690	}
691	/*
692	* copy the urlTab
693	*/
694	newctxt->urlMax = ctxt->urlMax;
695	newctxt->urlNr = ctxt->urlNr;
696	newctxt->urlTab = ctxt->urlTab;
697
698	/*
699	* Inherit the existing base
700	*/
701	newctxt->base = xmlStrdup(ctxt->base);
702
703	/*
704	* Inherit the documents already in use by other includes
705	*/
706	newctxt->incBase = ctxt->incNr;
707	for (i = 0;i < ctxt->incNr;i++) {
708	newctxt->incTab[i] = ctxt->incTab[i];
709	newctxt->incTab[i]->count++; /* prevent the recursion from
710	freeing it */
711	}
712	/*
713	* The new context should also inherit the Parse Flags
714	* (bug 132597)
715	*/
716	newctxt->parseFlags = ctxt->parseFlags;
717	xmlXIncludeDoProcess(newctxt, doc, xmlDocGetRootElement(doc));
718	for (i = 0;i < ctxt->incNr;i++) {
719	newctxt->incTab[i]->count--;
720	newctxt->incTab[i] = NULL;
721	}
722
723	/* urlTab may have been reallocated */
724	ctxt->urlTab = newctxt->urlTab;
725	ctxt->urlMax = newctxt->urlMax;
726
727	newctxt->urlMax = 0;
728	newctxt->urlNr = 0;
729	newctxt->urlTab = NULL;
730
731	xmlXIncludeFreeContext(newctxt);
732	}
733	#ifdef DEBUG_XINCLUDE
734	xmlGenericError(xmlGenericErrorContext, "Done recursing in doc %s\n", url);
735	#endif
736	}
737
738	/**
739	* xmlXIncludeAddTxt:
740	* @ctxt: the XInclude context
741	* @txt: the new text node
742	* @url: the associated URL
743	*
744	* Add a new txtument to the list
745	*/
746	static void
747	xmlXIncludeAddTxt(xmlXIncludeCtxtPtr ctxt, xmlNodePtr txt, const xmlURL url) {
748	#ifdef DEBUG_XINCLUDE
749	xmlGenericError(xmlGenericErrorContext, "Adding text %s\n", url);
750	#endif
751	if (ctxt->txtMax == 0) {
752	ctxt->txtMax = 4;
753	ctxt->txtTab = (xmlNodePtr ) xmlMalloc(ctxt->txtMax
754	sizeof(ctxt->txtTab[0]));
755	if (ctxt->txtTab == NULL) {
756	xmlXIncludeErrMemory(ctxt, NULL, "processing text");
757	return;
758	}
759	ctxt->txturlTab = (xmlURL ) xmlMalloc(ctxt->txtMax
760	sizeof(ctxt->txturlTab[0]));
761	if (ctxt->txturlTab == NULL) {
762	xmlXIncludeErrMemory(ctxt, NULL, "processing text");
763	return;
764	}
765	}
766	if (ctxt->txtNr >= ctxt->txtMax) {
767	ctxt->txtMax *= 2;
768	ctxt->txtTab = (xmlNodePtr *) xmlRealloc(ctxt->txtTab,
769	ctxt->txtMax * sizeof(ctxt->txtTab[0]));
770	if (ctxt->txtTab == NULL) {
771	xmlXIncludeErrMemory(ctxt, NULL, "processing text");
772	return;
773	}
774	ctxt->txturlTab = (xmlURL *) xmlRealloc(ctxt->txturlTab,
775	ctxt->txtMax * sizeof(ctxt->txturlTab[0]));
776	if (ctxt->txturlTab == NULL) {
777	xmlXIncludeErrMemory(ctxt, NULL, "processing text");
778	return;
779	}
780	}
781	ctxt->txtTab[ctxt->txtNr] = txt;
782	ctxt->txturlTab[ctxt->txtNr] = xmlStrdup(url);
783	ctxt->txtNr++;
784	}
785
786	/************************************************************************
787	* *
788	* Node copy with specific semantic *
789	* *
790	************************************************************************/
791
792	/**
793	* xmlXIncludeCopyNode:
794	* @ctxt: the XInclude context
795	* @target: the document target
796	* @source: the document source
797	* @elem: the element
798	*
799	* Make a copy of the node while preserving the XInclude semantic
800	* of the Infoset copy
801	*/
802	static xmlNodePtr
803	xmlXIncludeCopyNode(xmlXIncludeCtxtPtr ctxt, xmlDocPtr target,
804	xmlDocPtr source, xmlNodePtr elem) {
805	xmlNodePtr result = NULL;
806
807	if ((ctxt == NULL) \|\| (target == NULL) \|\| (source == NULL) \|\|
808	(elem == NULL))
809	return(NULL);
810	if (elem->type == XML_DTD_NODE)
811	return(NULL);
812	result = xmlDocCopyNode(elem, target, 1);
813	return(result);
814	}
815
816	/**
817	* xmlXIncludeCopyNodeList:
818	* @ctxt: the XInclude context
819	* @target: the document target
820	* @source: the document source
821	* @elem: the element list
822	*
823	* Make a copy of the node list while preserving the XInclude semantic
824	* of the Infoset copy
825	*/
826	static xmlNodePtr
827	xmlXIncludeCopyNodeList(xmlXIncludeCtxtPtr ctxt, xmlDocPtr target,
828	xmlDocPtr source, xmlNodePtr elem) {
829	xmlNodePtr cur, res, result = NULL, last = NULL;
830
831	if ((ctxt == NULL) \|\| (target == NULL) \|\| (source == NULL) \|\|
832	(elem == NULL))
833	return(NULL);
834	cur = elem;
835	while (cur != NULL) {
836	res = xmlXIncludeCopyNode(ctxt, target, source, cur);
837	if (res != NULL) {
838	if (result == NULL) {
839	result = last = res;
840	} else {
841	last->next = res;
842	res->prev = last;
843	last = res;
844	}
845	}
846	cur = cur->next;
847	}
848	return(result);
849	}
850
851	/**
852	* xmlXIncludeGetNthChild:
853	* @cur: the node
854	* @no: the child number
855	*
856	* Returns the @n'th element child of @cur or NULL
857	*/
858	static xmlNodePtr
859	xmlXIncludeGetNthChild(xmlNodePtr cur, int no) {
860	int i;
861	if (cur == NULL)
862	return(cur);
863	cur = cur->children;
864	for (i = 0;i <= no;cur = cur->next) {
865	if (cur == NULL)
866	return(cur);
867	if ((cur->type == XML_ELEMENT_NODE) \|\|
868	(cur->type == XML_DOCUMENT_NODE) \|\|
869	(cur->type == XML_HTML_DOCUMENT_NODE)) {
870	i++;
871	if (i == no)
872	break;
873	}
874	}
875	return(cur);
876	}
877
878	xmlNodePtr xmlXPtrAdvanceNode(xmlNodePtr cur, int level); / in xpointer.c */
879	/**
880	* xmlXIncludeCopyRange:
881	* @ctxt: the XInclude context
882	* @target: the document target
883	* @source: the document source
884	* @obj: the XPointer result from the evaluation.
885	*
886	* Build a node list tree copy of the XPointer result.
887	*
888	* Returns an xmlNodePtr list or NULL.
889	* The caller has to free the node tree.
890	*/
891	static xmlNodePtr
892	xmlXIncludeCopyRange(xmlXIncludeCtxtPtr ctxt, xmlDocPtr target,
893	xmlDocPtr source, xmlXPathObjectPtr range) {
894	/* pointers to generated nodes */
895	xmlNodePtr list = NULL, last = NULL, listParent = NULL;
896	xmlNodePtr tmp, tmp2;
897	/* pointers to traversal nodes */
898	xmlNodePtr start, cur, end;
899	int index1, index2;
900	int level = 0, lastLevel = 0, endLevel = 0, endFlag = 0;
901
902	if ((ctxt == NULL) \|\| (target == NULL) \|\| (source == NULL) \|\|
903	(range == NULL))
904	return(NULL);
905	if (range->type != XPATH_RANGE)
906	return(NULL);
907	start = (xmlNodePtr) range->user;
908
909	if (start == NULL)
910	return(NULL);
911	end = range->user2;
912	if (end == NULL)
913	return(xmlDocCopyNode(start, target, 1));
914
915	cur = start;
916	index1 = range->index;
917	index2 = range->index2;
918	/*
919	* level is depth of the current node under consideration
920	* list is the pointer to the root of the output tree
921	* listParent is a pointer to the parent of output tree (within
922	the included file) in case we need to add another level
923	* last is a pointer to the last node added to the output tree
924	* lastLevel is the depth of last (relative to the root)
925	*/
926	while (cur != NULL) {
927	/*
928	* Check if our output tree needs a parent
929	*/
930	if (level < 0) {
931	while (level < 0) {
932	/* copy must include namespaces and properties */
933	tmp2 = xmlDocCopyNode(listParent, target, 2);
934	xmlAddChild(tmp2, list);
935	list = tmp2;
936	listParent = listParent->parent;
937	level++;
938	}
939	last = list;
940	lastLevel = 0;
941	}
942	/*
943	* Check whether we need to change our insertion point
944	*/
945	while (level < lastLevel) {
946	last = last->parent;
947	lastLevel --;
948	}
949	if (cur == end) { /* Are we at the end of the range? */
950	if (cur->type == XML_TEXT_NODE) {
951	const xmlChar *content = cur->content;
952	int len;
953
954	if (content == NULL) {
955	tmp = xmlNewTextLen(NULL, 0);
956	} else {
957	len = index2;
958	if ((cur == start) && (index1 > 1)) {
959	content += (index1 - 1);
960	len -= (index1 - 1);
961	index1 = 0;
962	} else {
963	len = index2;
964	}
965	tmp = xmlNewTextLen(content, len);
966	}
967	/* single sub text node selection */
968	if (list == NULL)
969	return(tmp);
970	/* prune and return full set */
971	if (level == lastLevel)
972	xmlAddNextSibling(last, tmp);
973	else
974	xmlAddChild(last, tmp);
975	return(list);
976	} else { /* ending node not a text node */
977	endLevel = level; /* remember the level of the end node */
978	endFlag = 1;
979	/* last node - need to take care of properties + namespaces */
980	tmp = xmlDocCopyNode(cur, target, 2);
981	if (list == NULL) {
982	list = tmp;
983	listParent = cur->parent;
984	} else {
985	if (level == lastLevel)
986	xmlAddNextSibling(last, tmp);
987	else {
988	xmlAddChild(last, tmp);
989	lastLevel = level;
990	}
991	}
992	last = tmp;
993
994	if (index2 > 1) {
995	end = xmlXIncludeGetNthChild(cur, index2 - 1);
996	index2 = 0;
997	}
998	if ((cur == start) && (index1 > 1)) {
999	cur = xmlXIncludeGetNthChild(cur, index1 - 1);
1000	index1 = 0;
1001	} else {
1002	cur = cur->children;
1003	}
1004	level++; /* increment level to show change */
1005	/*
1006	* Now gather the remaining nodes from cur to end
1007	*/
1008	continue; /* while */
1009	}
1010	} else if (cur == start) { /* Not at the end, are we at start? */
1011	if ((cur->type == XML_TEXT_NODE) \|\|
1012	(cur->type == XML_CDATA_SECTION_NODE)) {
1013	const xmlChar *content = cur->content;
1014
1015	if (content == NULL) {
1016	tmp = xmlNewTextLen(NULL, 0);
1017	} else {
1018	if (index1 > 1) {
1019	content += (index1 - 1);
1020	index1 = 0;
1021	}
1022	tmp = xmlNewText(content);
1023	}
1024	last = list = tmp;
1025	listParent = cur->parent;
1026	} else { /* Not text node */
1027	/*
1028	* start of the range - need to take care of
1029	* properties and namespaces
1030	*/
1031	tmp = xmlDocCopyNode(cur, target, 2);
1032	list = last = tmp;
1033	listParent = cur->parent;
1034	if (index1 > 1) { /* Do we need to position? */
1035	cur = xmlXIncludeGetNthChild(cur, index1 - 1);
1036	level = lastLevel = 1;
1037	index1 = 0;
1038	/*
1039	* Now gather the remaining nodes from cur to end
1040	*/
1041	continue; /* while */
1042	}
1043	}
1044	} else {
1045	tmp = NULL;
1046	switch (cur->type) {
1047	case XML_DTD_NODE:
1048	case XML_ELEMENT_DECL:
1049	case XML_ATTRIBUTE_DECL:
1050	case XML_ENTITY_NODE:
1051	/* Do not copy DTD informations */
1052	break;
1053	case XML_ENTITY_DECL:
1054	/* handle crossing entities -> stack needed */
1055	break;
1056	case XML_XINCLUDE_START:
1057	case XML_XINCLUDE_END:
1058	/* don't consider it part of the tree content */
1059	break;
1060	case XML_ATTRIBUTE_NODE:
1061	/* Humm, should not happen ! */
1062	break;
1063	default:
1064	/*
1065	* Middle of the range - need to take care of
1066	* properties and namespaces
1067	*/
1068	tmp = xmlDocCopyNode(cur, target, 2);
1069	break;
1070	}
1071	if (tmp != NULL) {
1072	if (level == lastLevel)
1073	xmlAddNextSibling(last, tmp);
1074	else {
1075	xmlAddChild(last, tmp);
1076	lastLevel = level;
1077	}
1078	last = tmp;
1079	}
1080	}
1081	/*
1082	* Skip to next node in document order
1083	*/
1084	cur = xmlXPtrAdvanceNode(cur, &level);
1085	if (endFlag && (level >= endLevel))
1086	break;
1087	}
1088	return(list);
1089	}
1090
1091	/**
1092	* xmlXIncludeBuildNodeList:
1093	* @ctxt: the XInclude context
1094	* @target: the document target
1095	* @source: the document source
1096	* @obj: the XPointer result from the evaluation.
1097	*
1098	* Build a node list tree copy of the XPointer result.
1099	* This will drop Attributes and Namespace declarations.
1100	*
1101	* Returns an xmlNodePtr list or NULL.
1102	* the caller has to free the node tree.
1103	*/
1104	static xmlNodePtr
1105	xmlXIncludeCopyXPointer(xmlXIncludeCtxtPtr ctxt, xmlDocPtr target,
1106	xmlDocPtr source, xmlXPathObjectPtr obj) {
1107	xmlNodePtr list = NULL, last = NULL;
1108	int i;
1109
1110	if (source == NULL)
1111	source = ctxt->doc;
1112	if ((ctxt == NULL) \|\| (target == NULL) \|\| (source == NULL) \|\|
1113	(obj == NULL))
1114	return(NULL);
1115	switch (obj->type) {
1116	case XPATH_NODESET: {
1117	xmlNodeSetPtr set = obj->nodesetval;
1118	if (set == NULL)
1119	return(NULL);
1120	for (i = 0;i < set->nodeNr;i++) {
1121	if (set->nodeTab[i] == NULL)
1122	continue;
1123	switch (set->nodeTab[i]->type) {
1124	case XML_TEXT_NODE:
1125	case XML_CDATA_SECTION_NODE:
1126	case XML_ELEMENT_NODE:
1127	case XML_ENTITY_REF_NODE:
1128	case XML_ENTITY_NODE:
1129	case XML_PI_NODE:
1130	case XML_COMMENT_NODE:
1131	case XML_DOCUMENT_NODE:
1132	case XML_HTML_DOCUMENT_NODE:
1133	#ifdef LIBXML_DOCB_ENABLED
1134	case XML_DOCB_DOCUMENT_NODE:
1135	#endif
1136	case XML_XINCLUDE_END:
1137	break;
1138	case XML_XINCLUDE_START: {
1139	xmlNodePtr tmp, cur = set->nodeTab[i];
1140
1141	cur = cur->next;
1142	while (cur != NULL) {
1143	switch(cur->type) {
1144	case XML_TEXT_NODE:
1145	case XML_CDATA_SECTION_NODE:
1146	case XML_ELEMENT_NODE:
1147	case XML_ENTITY_REF_NODE:
1148	case XML_ENTITY_NODE:
1149	case XML_PI_NODE:
1150	case XML_COMMENT_NODE:
1151	tmp = xmlXIncludeCopyNode(ctxt, target,
1152	source, cur);
1153	if (last == NULL) {
1154	list = last = tmp;
1155	} else {
1156	xmlAddNextSibling(last, tmp);
1157	last = tmp;
1158	}
1159	cur = cur->next;
1160	continue;
1161	default:
1162	break;
1163	}
1164	break;
1165	}
1166	continue;
1167	}
1168	case XML_ATTRIBUTE_NODE:
1169	case XML_NAMESPACE_DECL:
1170	case XML_DOCUMENT_TYPE_NODE:
1171	case XML_DOCUMENT_FRAG_NODE:
1172	case XML_NOTATION_NODE:
1173	case XML_DTD_NODE:
1174	case XML_ELEMENT_DECL:
1175	case XML_ATTRIBUTE_DECL:
1176	case XML_ENTITY_DECL:
1177	continue; /* for */
1178	}
1179	if (last == NULL)
1180	list = last = xmlXIncludeCopyNode(ctxt, target, source,
1181	set->nodeTab[i]);
1182	else {
1183	xmlAddNextSibling(last,
1184	xmlXIncludeCopyNode(ctxt, target, source,
1185	set->nodeTab[i]));
1186	if (last->next != NULL)
1187	last = last->next;
1188	}
1189	}
1190	break;
1191	}
1192	case XPATH_LOCATIONSET: {
1193	xmlLocationSetPtr set = (xmlLocationSetPtr) obj->user;
1194	if (set == NULL)
1195	return(NULL);
1196	for (i = 0;i < set->locNr;i++) {
1197	if (last == NULL)
1198	list = last = xmlXIncludeCopyXPointer(ctxt, target, source,
1199	set->locTab[i]);
1200	else
1201	xmlAddNextSibling(last,
1202	xmlXIncludeCopyXPointer(ctxt, target, source,
1203	set->locTab[i]));
1204	if (last != NULL) {
1205	while (last->next != NULL)
1206	last = last->next;
1207	}
1208	}
1209	break;
1210	}
1211	#ifdef LIBXML_XPTR_ENABLED
1212	case XPATH_RANGE:
1213	return(xmlXIncludeCopyRange(ctxt, target, source, obj));
1214	#endif
1215	case XPATH_POINT:
1216	/* points are ignored in XInclude */
1217	break;
1218	default:
1219	break;
1220	}
1221	return(list);
1222	}
1223	/************************************************************************
1224	* *
1225	* XInclude I/O handling *
1226	* *
1227	************************************************************************/
1228
1229	typedef struct _xmlXIncludeMergeData xmlXIncludeMergeData;
1230	typedef xmlXIncludeMergeData *xmlXIncludeMergeDataPtr;
1231	struct _xmlXIncludeMergeData {
1232	xmlDocPtr doc;
1233	xmlXIncludeCtxtPtr ctxt;
1234	};
1235
1236	/**
1237	* xmlXIncludeMergeOneEntity:
1238	* @ent: the entity
1239	* @doc: the including doc
1240	* @nr: the entity name
1241	*
1242	* Inplements the merge of one entity
1243	*/
1244	static void
1245	xmlXIncludeMergeEntity(xmlEntityPtr ent, xmlXIncludeMergeDataPtr data,
1246	xmlChar *name ATTRIBUTE_UNUSED) {
1247	xmlEntityPtr ret, prev;
1248	xmlDocPtr doc;
1249	xmlXIncludeCtxtPtr ctxt;
1250
1251	if ((ent == NULL) \|\| (data == NULL))
1252	return;
1253	ctxt = data->ctxt;
1254	doc = data->doc;
1255	if ((ctxt == NULL) \|\| (doc == NULL))
1256	return;
1257	switch (ent->etype) {
1258	case XML_INTERNAL_PARAMETER_ENTITY:
1259	case XML_EXTERNAL_PARAMETER_ENTITY:
1260	case XML_INTERNAL_PREDEFINED_ENTITY:
1261	return;
1262	case XML_INTERNAL_GENERAL_ENTITY:
1263	case XML_EXTERNAL_GENERAL_PARSED_ENTITY:
1264	case XML_EXTERNAL_GENERAL_UNPARSED_ENTITY:
1265	break;
1266	}
1267	ret = xmlAddDocEntity(doc, ent->name, ent->etype, ent->ExternalID,
1268	ent->SystemID, ent->content);
1269	if (ret != NULL) {
1270	if (ent->URI != NULL)
1271	ret->URI = xmlStrdup(ent->URI);
1272	} else {
1273	prev = xmlGetDocEntity(doc, ent->name);
1274	if (prev != NULL) {
1275	if (ent->etype != prev->etype)
1276	goto error;
1277
1278	if ((ent->SystemID != NULL) && (prev->SystemID != NULL)) {
1279	if (!xmlStrEqual(ent->SystemID, prev->SystemID))
1280	goto error;
1281	} else if ((ent->ExternalID != NULL) &&
1282	(prev->ExternalID != NULL)) {
1283	if (!xmlStrEqual(ent->ExternalID, prev->ExternalID))
1284	goto error;
1285	} else if ((ent->content != NULL) && (prev->content != NULL)) {
1286	if (!xmlStrEqual(ent->content, prev->content))
1287	goto error;
1288	} else {
1289	goto error;
1290	}
1291
1292	}
1293	}
1294	return;
1295	error:
1296	switch (ent->etype) {
1297	case XML_INTERNAL_PARAMETER_ENTITY:
1298	case XML_EXTERNAL_PARAMETER_ENTITY:
1299	case XML_INTERNAL_PREDEFINED_ENTITY:
1300	case XML_INTERNAL_GENERAL_ENTITY:
1301	case XML_EXTERNAL_GENERAL_PARSED_ENTITY:
1302	return;
1303	case XML_EXTERNAL_GENERAL_UNPARSED_ENTITY:
1304	break;
1305	}
1306	xmlXIncludeErr(ctxt, (xmlNodePtr) ent, XML_XINCLUDE_ENTITY_DEF_MISMATCH,
1307	"mismatch in redefinition of entity %s\n",
1308	ent->name);
1309	}
1310
1311	/**
1312	* xmlXIncludeMergeEntities:
1313	* @ctxt: an XInclude context
1314	* @doc: the including doc
1315	* @from: the included doc
1316	*
1317	* Inplements the entity merge
1318	*
1319	* Returns 0 if merge succeeded, -1 if some processing failed
1320	*/
1321	static int
1322	xmlXIncludeMergeEntities(xmlXIncludeCtxtPtr ctxt, xmlDocPtr doc,
1323	xmlDocPtr from) {
1324	xmlNodePtr cur;
1325	xmlDtdPtr target, source;
1326
1327	if (ctxt == NULL)
1328	return(-1);
1329
1330	if ((from == NULL) \|\| (from->intSubset == NULL))
1331	return(0);
1332
1333	target = doc->intSubset;
1334	if (target == NULL) {
1335	cur = xmlDocGetRootElement(doc);
1336	if (cur == NULL)
1337	return(-1);
1338	target = xmlCreateIntSubset(doc, cur->name, NULL, NULL);
1339	if (target == NULL)
1340	return(-1);
1341	}
1342
1343	source = from->intSubset;
1344	if ((source != NULL) && (source->entities != NULL)) {
1345	xmlXIncludeMergeData data;
1346
1347	data.ctxt = ctxt;
1348	data.doc = doc;
1349
1350	xmlHashScan((xmlHashTablePtr) source->entities,
1351	(xmlHashScanner) xmlXIncludeMergeEntity, &data);
1352	}
1353	source = from->extSubset;
1354	if ((source != NULL) && (source->entities != NULL)) {
1355	xmlXIncludeMergeData data;
1356
1357	data.ctxt = ctxt;
1358	data.doc = doc;
1359
1360	/*
1361	* don't duplicate existing stuff when external subsets are the same
1362	*/
1363	if ((!xmlStrEqual(target->ExternalID, source->ExternalID)) &&
1364	(!xmlStrEqual(target->SystemID, source->SystemID))) {
1365	xmlHashScan((xmlHashTablePtr) source->entities,
1366	(xmlHashScanner) xmlXIncludeMergeEntity, &data);
1367	}
1368	}
1369	return(0);
1370	}
1371
1372	/**
1373	* xmlXIncludeLoadDoc:
1374	* @ctxt: the XInclude context
1375	* @url: the associated URL
1376	* @nr: the xinclude node number
1377	*
1378	* Load the document, and store the result in the XInclude context
1379	*
1380	* Returns 0 in case of success, -1 in case of failure
1381	*/
1382	static int
1383	xmlXIncludeLoadDoc(xmlXIncludeCtxtPtr ctxt, const xmlChar *url, int nr) {
1384	xmlDocPtr doc;
1385	xmlURIPtr uri;
1386	xmlChar *URL;
1387	xmlChar *fragment = NULL;
1388	int i = 0;
1389	#ifdef LIBXML_XPTR_ENABLED
1390	int saveFlags;
1391	#endif
1392
1393	#ifdef DEBUG_XINCLUDE
1394	xmlGenericError(xmlGenericErrorContext, "Loading doc %s:%d\n", url, nr);
1395	#endif
1396	/*
1397	* Check the URL and remove any fragment identifier
1398	*/
1399	uri = xmlParseURI((const char *)url);
1400	if (uri == NULL) {
1401	xmlXIncludeErr(ctxt, ctxt->incTab[nr]->ref,
1402	XML_XINCLUDE_HREF_URI,
1403	"invalid value URI %s\n", url);
1404	return(-1);
1405	}
1406	if (uri->fragment != NULL) {
1407	fragment = (xmlChar *) uri->fragment;
1408	uri->fragment = NULL;
1409	}
1410	if ((ctxt->incTab != NULL) && (ctxt->incTab[nr] != NULL) &&
1411	(ctxt->incTab[nr]->fragment != NULL)) {
1412	if (fragment != NULL) xmlFree(fragment);
1413	fragment = xmlStrdup(ctxt->incTab[nr]->fragment);
1414	}
1415	URL = xmlSaveUri(uri);
1416	xmlFreeURI(uri);
1417	if (URL == NULL) {
1418	if (ctxt->incTab != NULL)
1419	xmlXIncludeErr(ctxt, ctxt->incTab[nr]->ref,
1420	XML_XINCLUDE_HREF_URI,
1421	"invalid value URI %s\n", url);
1422	else
1423	xmlXIncludeErr(ctxt, NULL,
1424	XML_XINCLUDE_HREF_URI,
1425	"invalid value URI %s\n", url);
1426	if (fragment != NULL)
1427	xmlFree(fragment);
1428	return(-1);
1429	}
1430
1431	/*
1432	* Handling of references to the local document are done
1433	* directly through ctxt->doc.
1434	*/
1435	if ((URL[0] == 0) \|\| (URL[0] == '#') \|\|
1436	((ctxt->doc != NULL) && (xmlStrEqual(URL, ctxt->doc->URL)))) {
1437	doc = NULL;
1438	goto loaded;
1439	}
1440
1441	/*
1442	* Prevent reloading twice the document.
1443	*/
1444	for (i = 0; i < ctxt->incNr; i++) {
1445	if ((xmlStrEqual(URL, ctxt->incTab[i]->URI)) &&
1446	(ctxt->incTab[i]->doc != NULL)) {
1447	doc = ctxt->incTab[i]->doc;
1448	#ifdef DEBUG_XINCLUDE
1449	printf("Already loaded %s\n", URL);
1450	#endif
1451	goto loaded;
1452	}
1453	}
1454
1455	/*
1456	* Load it.
1457	*/
1458	#ifdef DEBUG_XINCLUDE
1459	printf("loading %s\n", URL);
1460	#endif
1461	#ifdef LIBXML_XPTR_ENABLED
1462	/*
1463	* If this is an XPointer evaluation, we want to assure that
1464	* all entities have been resolved prior to processing the
1465	* referenced document
1466	*/
1467	saveFlags = ctxt->parseFlags;
1468	if (fragment != NULL) { /* if this is an XPointer eval */
1469	ctxt->parseFlags \|= XML_PARSE_NOENT;
1470	}
1471	#endif
1472
1473	doc = xmlXIncludeParseFile(ctxt, (const char *)URL);
1474	#ifdef LIBXML_XPTR_ENABLED
1475	ctxt->parseFlags = saveFlags;
1476	#endif
1477	if (doc == NULL) {
1478	xmlFree(URL);
1479	if (fragment != NULL)
1480	xmlFree(fragment);
1481	return(-1);
1482	}
1483	ctxt->incTab[nr]->doc = doc;
1484	/*
1485	* It's possible that the requested URL has been mapped to a
1486	* completely different location (e.g. through a catalog entry).
1487	* To check for this, we compare the URL with that of the doc
1488	* and change it if they disagree (bug 146988).
1489	*/
1490	if (!xmlStrEqual(URL, doc->URL)) {
1491	xmlFree(URL);
1492	URL = xmlStrdup(doc->URL);
1493	}
1494	for (i = nr + 1; i < ctxt->incNr; i++) {
1495	if (xmlStrEqual(URL, ctxt->incTab[i]->URI)) {
1496	ctxt->incTab[nr]->count++;
1497	#ifdef DEBUG_XINCLUDE
1498	printf("Increasing %s count since reused\n", URL);
1499	#endif
1500	break;
1501	}
1502	}
1503
1504	/*
1505	* Make sure we have all entities fixed up
1506	*/
1507	xmlXIncludeMergeEntities(ctxt, ctxt->doc, doc);
1508
1509	/*
1510	* We don't need the DTD anymore, free up space
1511	if (doc->intSubset != NULL) {
1512	xmlUnlinkNode((xmlNodePtr) doc->intSubset);
1513	xmlFreeNode((xmlNodePtr) doc->intSubset);
1514	doc->intSubset = NULL;
1515	}
1516	if (doc->extSubset != NULL) {
1517	xmlUnlinkNode((xmlNodePtr) doc->extSubset);
1518	xmlFreeNode((xmlNodePtr) doc->extSubset);
1519	doc->extSubset = NULL;
1520	}
1521	*/
1522	xmlXIncludeRecurseDoc(ctxt, doc, URL);
1523
1524	loaded:
1525	if (fragment == NULL) {
1526	/*
1527	* Add the top children list as the replacement copy.
1528	*/
1529	if (doc == NULL)
1530	{
1531	/* Hopefully a DTD declaration won't be copied from
1532	* the same document */
1533	ctxt->incTab[nr]->inc = xmlCopyNodeList(ctxt->doc->children);
1534	} else {
1535	ctxt->incTab[nr]->inc = xmlXIncludeCopyNodeList(ctxt, ctxt->doc,
1536	doc, doc->children);
1537	}
1538	}
1539	#ifdef LIBXML_XPTR_ENABLED
1540	else {
1541	/*
1542	* Computes the XPointer expression and make a copy used
1543	* as the replacement copy.
1544	*/
1545	xmlXPathObjectPtr xptr;
1546	xmlXPathContextPtr xptrctxt;
1547	xmlNodeSetPtr set;
1548
1549	if (doc == NULL) {
1550	xptrctxt = xmlXPtrNewContext(ctxt->doc, ctxt->incTab[nr]->ref,
1551	NULL);
1552	} else {
1553	xptrctxt = xmlXPtrNewContext(doc, NULL, NULL);
1554	}
1555	if (xptrctxt == NULL) {
1556	xmlXIncludeErr(ctxt, ctxt->incTab[nr]->ref,
1557	XML_XINCLUDE_XPTR_FAILED,
1558	"could not create XPointer context\n", NULL);
1559	xmlFree(URL);
1560	xmlFree(fragment);
1561	return(-1);
1562	}
1563	xptr = xmlXPtrEval(fragment, xptrctxt);
1564	if (xptr == NULL) {
1565	xmlXIncludeErr(ctxt, ctxt->incTab[nr]->ref,
1566	XML_XINCLUDE_XPTR_FAILED,
1567	"XPointer evaluation failed: #%s\n",
1568	fragment);
1569	xmlXPathFreeContext(xptrctxt);
1570	xmlFree(URL);
1571	xmlFree(fragment);
1572	return(-1);
1573	}
1574	switch (xptr->type) {
1575	case XPATH_UNDEFINED:
1576	case XPATH_BOOLEAN:
1577	case XPATH_NUMBER:
1578	case XPATH_STRING:
1579	case XPATH_POINT:
1580	case XPATH_USERS:
1581	case XPATH_XSLT_TREE:
1582	xmlXIncludeErr(ctxt, ctxt->incTab[nr]->ref,
1583	XML_XINCLUDE_XPTR_RESULT,
1584	"XPointer is not a range: #%s\n",
1585	fragment);
1586	xmlXPathFreeContext(xptrctxt);
1587	xmlFree(URL);
1588	xmlFree(fragment);
1589	return(-1);
1590	case XPATH_NODESET:
1591	if ((xptr->nodesetval == NULL) \|\|
1592	(xptr->nodesetval->nodeNr <= 0)) {
1593	xmlXPathFreeContext(xptrctxt);
1594	xmlFree(URL);
1595	xmlFree(fragment);
1596	return(-1);
1597	}
1598
1599	case XPATH_RANGE:
1600	case XPATH_LOCATIONSET:
1601	break;
1602	}
1603	set = xptr->nodesetval;
1604	if (set != NULL) {
1605	for (i = 0;i < set->nodeNr;i++) {
1606	if (set->nodeTab[i] == NULL)
1607	continue;
1608	switch (set->nodeTab[i]->type) {
1609	case XML_ELEMENT_NODE:
1610	case XML_TEXT_NODE:
1611	case XML_CDATA_SECTION_NODE:
1612	case XML_ENTITY_REF_NODE:
1613	case XML_ENTITY_NODE:
1614	case XML_PI_NODE:
1615	case XML_COMMENT_NODE:
1616	case XML_DOCUMENT_NODE:
1617	case XML_HTML_DOCUMENT_NODE:
1618	#ifdef LIBXML_DOCB_ENABLED
1619	case XML_DOCB_DOCUMENT_NODE:
1620	#endif
1621	continue;
1622
1623	case XML_ATTRIBUTE_NODE:
1624	xmlXIncludeErr(ctxt, ctxt->incTab[nr]->ref,
1625	XML_XINCLUDE_XPTR_RESULT,
1626	"XPointer selects an attribute: #%s\n",
1627	fragment);
1628	set->nodeTab[i] = NULL;
1629	continue;
1630	case XML_NAMESPACE_DECL:
1631	xmlXIncludeErr(ctxt, ctxt->incTab[nr]->ref,
1632	XML_XINCLUDE_XPTR_RESULT,
1633	"XPointer selects a namespace: #%s\n",
1634	fragment);
1635	set->nodeTab[i] = NULL;
1636	continue;
1637	case XML_DOCUMENT_TYPE_NODE:
1638	case XML_DOCUMENT_FRAG_NODE:
1639	case XML_NOTATION_NODE:
1640	case XML_DTD_NODE:
1641	case XML_ELEMENT_DECL:
1642	case XML_ATTRIBUTE_DECL:
1643	case XML_ENTITY_DECL:
1644	case XML_XINCLUDE_START:
1645	case XML_XINCLUDE_END:
1646	xmlXIncludeErr(ctxt, ctxt->incTab[nr]->ref,
1647	XML_XINCLUDE_XPTR_RESULT,
1648	"XPointer selects unexpected nodes: #%s\n",
1649	fragment);
1650	set->nodeTab[i] = NULL;
1651	set->nodeTab[i] = NULL;
1652	continue; /* for */
1653	}
1654	}
1655	}
1656	if (doc == NULL) {
1657	ctxt->incTab[nr]->xptr = xptr;
1658	ctxt->incTab[nr]->inc = NULL;
1659	} else {
1660	ctxt->incTab[nr]->inc =
1661	xmlXIncludeCopyXPointer(ctxt, ctxt->doc, doc, xptr);
1662	xmlXPathFreeObject(xptr);
1663	}
1664	xmlXPathFreeContext(xptrctxt);
1665	xmlFree(fragment);
1666	}
1667	#endif
1668
1669	/*
1670	* Do the xml:base fixup if needed
1671	*/
1672	if ((doc != NULL) && (URL != NULL) && (xmlStrchr(URL, (xmlChar) '/'))) {
1673	xmlNodePtr node;
1674	xmlChar *base;
1675	xmlChar *curBase;
1676
1677	/*
1678	* The base is only adjusted if "necessary", i.e. if the xinclude node
1679	* has a base specified, or the URL is relative
1680	*/
1681	base = xmlGetNsProp(ctxt->incTab[nr]->ref, BAD_CAST "base",
1682	XML_XML_NAMESPACE);
1683	if (base == NULL) {
1684	/*
1685	* No xml:base on the xinclude node, so we check whether the
1686	* URI base is different than (relative to) the context base
1687	*/
1688	curBase = xmlBuildRelativeURI(URL, ctxt->base);
1689	if (curBase == NULL) { /* Error return */
1690	xmlXIncludeErr(ctxt, ctxt->incTab[nr]->ref,
1691	XML_XINCLUDE_HREF_URI,
1692	"trying to build relative URI from %s\n", URL);
1693	} else {
1694	/* If the URI doesn't contain a slash, it's not relative */
1695	if (!xmlStrchr(curBase, (xmlChar) '/'))
1696	xmlFree(curBase);
1697	else
1698	base = curBase;
1699	}
1700	}
1701	if (base != NULL) { /* Adjustment may be needed */
1702	node = ctxt->incTab[nr]->inc;
1703	while (node != NULL) {
1704	/* Only work on element nodes */
1705	if (node->type == XML_ELEMENT_NODE) {
1706	curBase = xmlNodeGetBase(node->doc, node);
1707	/* If no current base, set it */
1708	if (curBase == NULL) {
1709	xmlNodeSetBase(node, base);
1710	} else {
1711	/*
1712	* If the current base is the same as the
1713	* URL of the document, then reset it to be
1714	* the specified xml:base or the relative URI
1715	*/
1716	if (xmlStrEqual(curBase, node->doc->URL)) {
1717	xmlNodeSetBase(node, base);
1718	} else {
1719	/*
1720	* If the element already has an xml:base
1721	* set, then relativise it if necessary
1722	*/
1723	xmlChar *xmlBase;
1724	xmlBase = xmlGetNsProp(node,
1725	BAD_CAST "base",
1726	XML_XML_NAMESPACE);
1727	if (xmlBase != NULL) {
1728	xmlChar *relBase;
1729	relBase = xmlBuildURI(xmlBase, base);
1730	if (relBase == NULL) { /* error */
1731	xmlXIncludeErr(ctxt,
1732	ctxt->incTab[nr]->ref,
1733	XML_XINCLUDE_HREF_URI,
1734	"trying to rebuild base from %s\n",
1735	xmlBase);
1736	} else {
1737	xmlNodeSetBase(node, relBase);
1738	xmlFree(relBase);
1739	}
1740	xmlFree(xmlBase);
1741	}
1742	}
1743	xmlFree(curBase);
1744	}
1745	}
1746	node = node->next;
1747	}
1748	xmlFree(base);
1749	}
1750	}
1751	if ((nr < ctxt->incNr) && (ctxt->incTab[nr]->doc != NULL) &&
1752	(ctxt->incTab[nr]->count <= 1)) {
1753	#ifdef DEBUG_XINCLUDE
1754	printf("freeing %s\n", ctxt->incTab[nr]->doc->URL);
1755	#endif
1756	xmlFreeDoc(ctxt->incTab[nr]->doc);
1757	ctxt->incTab[nr]->doc = NULL;
1758	}
1759	xmlFree(URL);
1760	return(0);
1761	}
1762
1763	/**
1764	* xmlXIncludeLoadTxt:
1765	* @ctxt: the XInclude context
1766	* @url: the associated URL
1767	* @nr: the xinclude node number
1768	*
1769	* Load the content, and store the result in the XInclude context
1770	*
1771	* Returns 0 in case of success, -1 in case of failure
1772	*/
1773	static int
1774	xmlXIncludeLoadTxt(xmlXIncludeCtxtPtr ctxt, const xmlChar *url, int nr) {
1775	xmlParserInputBufferPtr buf;
1776	xmlNodePtr node;
1777	xmlURIPtr uri;
1778	xmlChar *URL;
1779	int i;
1780	xmlChar *encoding = NULL;
1781	xmlCharEncoding enc = (xmlCharEncoding) 0;
1782
1783	/*
1784	* Check the URL and remove any fragment identifier
1785	*/
1786	uri = xmlParseURI((const char *)url);
1787	if (uri == NULL) {
1788	xmlXIncludeErr(ctxt, ctxt->incTab[nr]->ref, XML_XINCLUDE_HREF_URI,
1789	"invalid value URI %s\n", url);
1790	return(-1);
1791	}
1792	if (uri->fragment != NULL) {
1793	xmlXIncludeErr(ctxt, ctxt->incTab[nr]->ref, XML_XINCLUDE_TEXT_FRAGMENT,
1794	"fragment identifier forbidden for text: %s\n",
1795	(const xmlChar *) uri->fragment);
1796	xmlFreeURI(uri);
1797	return(-1);
1798	}
1799	URL = xmlSaveUri(uri);
1800	xmlFreeURI(uri);
1801	if (URL == NULL) {
1802	xmlXIncludeErr(ctxt, ctxt->incTab[nr]->ref, XML_XINCLUDE_HREF_URI,
1803	"invalid value URI %s\n", url);
1804	return(-1);
1805	}
1806
1807	/*
1808	* Handling of references to the local document are done
1809	* directly through ctxt->doc.
1810	*/
1811	if (URL[0] == 0) {
1812	xmlXIncludeErr(ctxt, ctxt->incTab[nr]->ref,
1813	XML_XINCLUDE_TEXT_DOCUMENT,
1814	"text serialization of document not available\n", NULL);
1815	xmlFree(URL);
1816	return(-1);
1817	}
1818
1819	/*
1820	* Prevent reloading twice the document.
1821	*/
1822	for (i = 0; i < ctxt->txtNr; i++) {
1823	if (xmlStrEqual(URL, ctxt->txturlTab[i])) {
1824	node = xmlCopyNode(ctxt->txtTab[i], 1);
1825	goto loaded;
1826	}
1827	}
1828	/*
1829	* Try to get the encoding if available
1830	*/
1831	if ((ctxt->incTab[nr] != NULL) && (ctxt->incTab[nr]->ref != NULL)) {
1832	encoding = xmlGetProp(ctxt->incTab[nr]->ref, XINCLUDE_PARSE_ENCODING);
1833	}
1834	if (encoding != NULL) {
1835	/*
1836	* TODO: we should not have to remap to the xmlCharEncoding
1837	* predefined set, a better interface than
1838	* xmlParserInputBufferCreateFilename should allow any
1839	* encoding supported by iconv
1840	*/
1841	enc = xmlParseCharEncoding((const char *) encoding);
1842	if (enc == XML_CHAR_ENCODING_ERROR) {
1843	xmlXIncludeErr(ctxt, ctxt->incTab[nr]->ref,
1844	XML_XINCLUDE_UNKNOWN_ENCODING,
1845	"encoding %s not supported\n", encoding);
1846	xmlFree(encoding);
1847	xmlFree(URL);
1848	return(-1);
1849	}
1850	xmlFree(encoding);
1851	}
1852
1853	/*
1854	* Load it.
1855	*/
1856	buf = xmlParserInputBufferCreateFilename((const char *)URL, enc);
1857	if (buf == NULL) {
1858	xmlFree(URL);
1859	return(-1);
1860	}
1861	node = xmlNewText(NULL);
1862
1863	/*
1864	* Scan all chars from the resource and add the to the node
1865	*/
1866	while (xmlParserInputBufferRead(buf, 128) > 0) {
1867	int len;
1868	const xmlChar *content;
1869
1870	content = xmlBufferContent(buf->buffer);
1871	len = xmlBufferLength(buf->buffer);
1872	for (i = 0;i < len;) {
1873	int cur;
1874	int l;
1875
1876	cur = xmlStringCurrentChar(NULL, &content[i], &l);
1877	if (!IS_CHAR(cur)) {
1878	xmlXIncludeErr(ctxt, ctxt->incTab[nr]->ref,
1879	XML_XINCLUDE_INVALID_CHAR,
1880	"%s contains invalid char\n", URL);
1881	xmlFreeParserInputBuffer(buf);
1882	xmlFree(URL);
1883	return(-1);
1884	} else {
1885	xmlNodeAddContentLen(node, &content[i], l);
1886	}
1887	i += l;
1888	}
1889	xmlBufferShrink(buf->buffer, len);
1890	}
1891	xmlFreeParserInputBuffer(buf);
1892	xmlXIncludeAddTxt(ctxt, node, URL);
1893
1894	loaded:
1895	/*
1896	* Add the element as the replacement copy.
1897	*/
1898	ctxt->incTab[nr]->inc = node;
1899	xmlFree(URL);
1900	return(0);
1901	}
1902
1903	/**
1904	* xmlXIncludeLoadFallback:
1905	* @ctxt: the XInclude context
1906	* @fallback: the fallback node
1907	* @nr: the xinclude node number
1908	*
1909	* Load the content of the fallback node, and store the result
1910	* in the XInclude context
1911	*
1912	* Returns 0 in case of success, -1 in case of failure
1913	*/
1914	static int
1915	xmlXIncludeLoadFallback(xmlXIncludeCtxtPtr ctxt, xmlNodePtr fallback, int nr) {
1916	xmlXIncludeCtxtPtr newctxt;
1917	int ret = 0;
1918
1919	if ((fallback == NULL) \|\| (ctxt == NULL))
1920	return(-1);
1921	if (fallback->children != NULL) {
1922	/*
1923	* It's possible that the fallback also has 'includes'
1924	* (Bug 129969), so we re-process the fallback just in case
1925	*/
1926	newctxt = xmlXIncludeNewContext(ctxt->doc);
1927	if (newctxt == NULL)
1928	return (-1);
1929	newctxt->_private = ctxt->_private;
1930	newctxt->base = xmlStrdup(ctxt->base); /* Inherit the base from the existing context */
1931	xmlXIncludeSetFlags(newctxt, ctxt->parseFlags);
1932	ret = xmlXIncludeDoProcess(newctxt, ctxt->doc, fallback->children);
1933	if (ctxt->nbErrors > 0)
1934	ret = -1;
1935	else if (ret > 0)
1936	ret = 0; /* xmlXIncludeDoProcess can return +ve number */
1937	xmlXIncludeFreeContext(newctxt);
1938
1939	ctxt->incTab[nr]->inc = xmlDocCopyNodeList(ctxt->doc,
1940	fallback->children);
1941	} else {
1942	ctxt->incTab[nr]->inc = NULL;
1943	ctxt->incTab[nr]->emptyFb = 1; /* flag empty callback */
1944	}
1945	return(ret);
1946	}
1947
1948	/************************************************************************
1949	* *
1950	* XInclude Processing *
1951	* *
1952	************************************************************************/
1953
1954	/**
1955	* xmlXIncludePreProcessNode:
1956	* @ctxt: an XInclude context
1957	* @node: an XInclude node
1958	*
1959	* Implement the XInclude preprocessing, currently just adding the element
1960	* for further processing.
1961	*
1962	* Returns the result list or NULL in case of error
1963	*/
1964	static xmlNodePtr
1965	xmlXIncludePreProcessNode(xmlXIncludeCtxtPtr ctxt, xmlNodePtr node) {
1966	xmlXIncludeAddNode(ctxt, node);
1967	return(NULL);
1968	}
1969
1970	/**
1971	* xmlXIncludeLoadNode:
1972	* @ctxt: an XInclude context
1973	* @nr: the node number
1974	*
1975	* Find and load the infoset replacement for the given node.
1976	*
1977	* Returns 0 if substitution succeeded, -1 if some processing failed
1978	*/
1979	static int
1980	xmlXIncludeLoadNode(xmlXIncludeCtxtPtr ctxt, int nr) {
1981	xmlNodePtr cur;
1982	xmlChar *href;
1983	xmlChar *parse;
1984	xmlChar *base;
1985	xmlChar *oldBase;
1986	xmlChar *URI;
1987	int xml = 1; /* default Issue 64 */
1988	int ret;
1989
1990	if (ctxt == NULL)
1991	return(-1);
1992	if ((nr < 0) \|\| (nr >= ctxt->incNr))
1993	return(-1);
1994	cur = ctxt->incTab[nr]->ref;
1995	if (cur == NULL)
1996	return(-1);
1997
1998	/*
1999	* read the attributes
2000	*/
2001	href = xmlXIncludeGetProp(ctxt, cur, XINCLUDE_HREF);
2002	if (href == NULL) {
2003	href = xmlStrdup(BAD_CAST ""); /* @@@@ href is now optional */
2004	if (href == NULL)
2005	return(-1);
2006	}
2007	parse = xmlXIncludeGetProp(ctxt, cur, XINCLUDE_PARSE);
2008	if (parse != NULL) {
2009	if (xmlStrEqual(parse, XINCLUDE_PARSE_XML))
2010	xml = 1;
2011	else if (xmlStrEqual(parse, XINCLUDE_PARSE_TEXT))
2012	xml = 0;
2013	else {
2014	xmlXIncludeErr(ctxt, ctxt->incTab[nr]->ref,
2015	XML_XINCLUDE_PARSE_VALUE,
2016	"invalid value %s for 'parse'\n", parse);
2017	if (href != NULL)
2018	xmlFree(href);
2019	if (parse != NULL)
2020	xmlFree(parse);
2021	return(-1);
2022	}
2023	}
2024
2025	/*
2026	* compute the URI
2027	*/
2028	base = xmlNodeGetBase(ctxt->doc, cur);
2029	if (base == NULL) {
2030	URI = xmlBuildURI(href, ctxt->doc->URL);
2031	} else {
2032	URI = xmlBuildURI(href, base);
2033	}
2034	if (URI == NULL) {
2035	xmlChar *escbase;
2036	xmlChar *eschref;
2037	/*
2038	* Some escaping may be needed
2039	*/
2040	escbase = xmlURIEscape(base);
2041	eschref = xmlURIEscape(href);
2042	URI = xmlBuildURI(eschref, escbase);
2043	if (escbase != NULL)
2044	xmlFree(escbase);
2045	if (eschref != NULL)
2046	xmlFree(eschref);
2047	}
2048	if (URI == NULL) {
2049	xmlXIncludeErr(ctxt, ctxt->incTab[nr]->ref,
2050	XML_XINCLUDE_HREF_URI, "failed build URL\n", NULL);
2051	if (parse != NULL)
2052	xmlFree(parse);
2053	if (href != NULL)
2054	xmlFree(href);
2055	if (base != NULL)
2056	xmlFree(base);
2057	return(-1);
2058	}
2059	#ifdef DEBUG_XINCLUDE
2060	xmlGenericError(xmlGenericErrorContext, "parse: %s\n",
2061	xml ? "xml": "text");
2062	xmlGenericError(xmlGenericErrorContext, "URI: %s\n", URI);
2063	#endif
2064
2065	/*
2066	* Save the base for this include (saving the current one)
2067	*/
2068	oldBase = ctxt->base;
2069	ctxt->base = base;
2070
2071	if (xml) {
2072	ret = xmlXIncludeLoadDoc(ctxt, URI, nr);
2073	/* xmlXIncludeGetFragment(ctxt, cur, URI); */
2074	} else {
2075	ret = xmlXIncludeLoadTxt(ctxt, URI, nr);
2076	}
2077
2078	/*
2079	* Restore the original base before checking for fallback
2080	*/
2081	ctxt->base = oldBase;
2082
2083	if (ret < 0) {
2084	xmlNodePtr children;
2085
2086	/*
2087	* Time to try a fallback if availble
2088	*/
2089	#ifdef DEBUG_XINCLUDE
2090	xmlGenericError(xmlGenericErrorContext, "error looking for fallback\n");
2091	#endif
2092	children = cur->children;
2093	while (children != NULL) {
2094	if ((children->type == XML_ELEMENT_NODE) &&
2095	(children->ns != NULL) &&
2096	(xmlStrEqual(children->name, XINCLUDE_FALLBACK)) &&
2097	((xmlStrEqual(children->ns->href, XINCLUDE_NS)) \|\|
2098	(xmlStrEqual(children->ns->href, XINCLUDE_OLD_NS)))) {
2099	ret = xmlXIncludeLoadFallback(ctxt, children, nr);
2100	if (ret == 0)
2101	break;
2102	}
2103	children = children->next;
2104	}
2105	}
2106	if (ret < 0) {
2107	xmlXIncludeErr(ctxt, ctxt->incTab[nr]->ref,
2108	XML_XINCLUDE_NO_FALLBACK,
2109	"could not load %s, and no fallback was found\n",
2110	URI);
2111	}
2112
2113	/*
2114	* Cleanup
2115	*/
2116	if (URI != NULL)
2117	xmlFree(URI);
2118	if (parse != NULL)
2119	xmlFree(parse);
2120	if (href != NULL)
2121	xmlFree(href);
2122	if (base != NULL)
2123	xmlFree(base);
2124	return(0);
2125	}
2126
2127	/**
2128	* xmlXIncludeIncludeNode:
2129	* @ctxt: an XInclude context
2130	* @nr: the node number
2131	*
2132	* Inplement the infoset replacement for the given node
2133	*
2134	* Returns 0 if substitution succeeded, -1 if some processing failed
2135	*/
2136	static int
2137	xmlXIncludeIncludeNode(xmlXIncludeCtxtPtr ctxt, int nr) {
2138	xmlNodePtr cur, end, list, tmp;
2139
2140	if (ctxt == NULL)
2141	return(-1);
2142	if ((nr < 0) \|\| (nr >= ctxt->incNr))
2143	return(-1);
2144	cur = ctxt->incTab[nr]->ref;
2145	if (cur == NULL)
2146	return(-1);
2147
2148	/*
2149	* If we stored an XPointer a late computation may be needed
2150	*/
2151	if ((ctxt->incTab[nr]->inc == NULL) &&
2152	(ctxt->incTab[nr]->xptr != NULL)) {
2153	ctxt->incTab[nr]->inc =
2154	xmlXIncludeCopyXPointer(ctxt, ctxt->doc, ctxt->doc,
2155	ctxt->incTab[nr]->xptr);
2156	xmlXPathFreeObject(ctxt->incTab[nr]->xptr);
2157	ctxt->incTab[nr]->xptr = NULL;
2158	}
2159	list = ctxt->incTab[nr]->inc;
2160	ctxt->incTab[nr]->inc = NULL;
2161
2162	/*
2163	* Check against the risk of generating a multi-rooted document
2164	*/
2165	if ((cur->parent != NULL) &&
2166	(cur->parent->type != XML_ELEMENT_NODE)) {
2167	int nb_elem = 0;
2168
2169	tmp = list;
2170	while (tmp != NULL) {
2171	if (tmp->type == XML_ELEMENT_NODE)
2172	nb_elem++;
2173	tmp = tmp->next;
2174	}
2175	if (nb_elem > 1) {
2176	xmlXIncludeErr(ctxt, ctxt->incTab[nr]->ref,
2177	XML_XINCLUDE_MULTIPLE_ROOT,
2178	"XInclude error: would result in multiple root nodes\n",
2179	NULL);
2180	return(-1);
2181	}
2182	}
2183
2184	if (ctxt->parseFlags & XML_PARSE_NOXINCNODE) {
2185	/*
2186	* Add the list of nodes
2187	*/
2188	while (list != NULL) {
2189	end = list;
2190	list = list->next;
2191
2192	xmlAddPrevSibling(cur, end);
2193	}
2194	xmlUnlinkNode(cur);
2195	xmlFreeNode(cur);
2196	} else {
2197	/*
2198	* Change the current node as an XInclude start one, and add an
2199	* XInclude end one
2200	*/
2201	cur->type = XML_XINCLUDE_START;
2202	end = xmlNewDocNode(cur->doc, cur->ns, cur->name, NULL);
2203	if (end == NULL) {
2204	xmlXIncludeErr(ctxt, ctxt->incTab[nr]->ref,
2205	XML_XINCLUDE_BUILD_FAILED,
2206	"failed to build node\n", NULL);
2207	return(-1);
2208	}
2209	end->type = XML_XINCLUDE_END;
2210	xmlAddNextSibling(cur, end);
2211
2212	/*
2213	* Add the list of nodes
2214	*/
2215	while (list != NULL) {
2216	cur = list;
2217	list = list->next;
2218
2219	xmlAddPrevSibling(end, cur);
2220	}
2221	}
2222
2223
2224	return(0);
2225	}
2226
2227	/**
2228	* xmlXIncludeTestNode:
2229	* @ctxt: the XInclude processing context
2230	* @node: an XInclude node
2231	*
2232	* test if the node is an XInclude node
2233	*
2234	* Returns 1 true, 0 otherwise
2235	*/
2236	static int
2237	xmlXIncludeTestNode(xmlXIncludeCtxtPtr ctxt, xmlNodePtr node) {
2238	if (node == NULL)
2239	return(0);
2240	if (node->type != XML_ELEMENT_NODE)
2241	return(0);
2242	if (node->ns == NULL)
2243	return(0);
2244	if ((xmlStrEqual(node->ns->href, XINCLUDE_NS)) \|\|
2245	(xmlStrEqual(node->ns->href, XINCLUDE_OLD_NS))) {
2246	if (xmlStrEqual(node->ns->href, XINCLUDE_OLD_NS)) {
2247	if (ctxt->legacy == 0) {
2248	#if 0 /* wait for the XML Core Working Group to get something stable ! */
2249	xmlXIncludeWarn(ctxt, node, XML_XINCLUDE_DEPRECATED_NS,
2250	"Deprecated XInclude namespace found, use %s",
2251	XINCLUDE_NS);
2252	#endif
2253	ctxt->legacy = 1;
2254	}
2255	}
2256	if (xmlStrEqual(node->name, XINCLUDE_NODE)) {
2257	xmlNodePtr child = node->children;
2258	int nb_fallback = 0;
2259
2260	while (child != NULL) {
2261	if ((child->type == XML_ELEMENT_NODE) &&
2262	(child->ns != NULL) &&
2263	((xmlStrEqual(child->ns->href, XINCLUDE_NS)) \|\|
2264	(xmlStrEqual(child->ns->href, XINCLUDE_OLD_NS)))) {
2265	if (xmlStrEqual(child->name, XINCLUDE_NODE)) {
2266	xmlXIncludeErr(ctxt, node,
2267	XML_XINCLUDE_INCLUDE_IN_INCLUDE,
2268	"%s has an 'include' child\n",
2269	XINCLUDE_NODE);
2270	return(0);
2271	}
2272	if (xmlStrEqual(child->name, XINCLUDE_FALLBACK)) {
2273	nb_fallback++;
2274	}
2275	}
2276	child = child->next;
2277	}
2278	if (nb_fallback > 1) {
2279	xmlXIncludeErr(ctxt, node, XML_XINCLUDE_FALLBACKS_IN_INCLUDE,
2280	"%s has multiple fallback children\n",
2281	XINCLUDE_NODE);
2282	return(0);
2283	}
2284	return(1);
2285	}
2286	if (xmlStrEqual(node->name, XINCLUDE_FALLBACK)) {
2287	if ((node->parent == NULL) \|\|
2288	(node->parent->type != XML_ELEMENT_NODE) \|\|
2289	(node->parent->ns == NULL) \|\|
2290	((!xmlStrEqual(node->parent->ns->href, XINCLUDE_NS)) &&
2291	(!xmlStrEqual(node->parent->ns->href, XINCLUDE_OLD_NS))) \|\|
2292	(!xmlStrEqual(node->parent->name, XINCLUDE_NODE))) {
2293	xmlXIncludeErr(ctxt, node,
2294	XML_XINCLUDE_FALLBACK_NOT_IN_INCLUDE,
2295	"%s is not the child of an 'include'\n",
2296	XINCLUDE_FALLBACK);
2297	}
2298	}
2299	}
2300	return(0);
2301	}
2302
2303	/**
2304	* xmlXIncludeDoProcess:
2305	* @ctxt: the XInclude processing context
2306	* @doc: an XML document
2307	* @tree: the top of the tree to process
2308	*
2309	* Implement the XInclude substitution on the XML document @doc
2310	*
2311	* Returns 0 if no substitution were done, -1 if some processing failed
2312	* or the number of substitutions done.
2313	*/
2314	static int
2315	xmlXIncludeDoProcess(xmlXIncludeCtxtPtr ctxt, xmlDocPtr doc, xmlNodePtr tree) {
2316	xmlNodePtr cur;
2317	int ret = 0;
2318	int i, start;
2319
2320	if ((doc == NULL) \|\| (tree == NULL))
2321	return(-1);
2322	if (ctxt == NULL)
2323	return(-1);
2324
2325	if (doc->URL != NULL) {
2326	ret = xmlXIncludeURLPush(ctxt, doc->URL);
2327	if (ret < 0)
2328	return(-1);
2329	}
2330	start = ctxt->incNr;
2331
2332	/*
2333	* First phase: lookup the elements in the document
2334	*/
2335	cur = tree;
2336	if (xmlXIncludeTestNode(ctxt, cur) == 1)
2337	xmlXIncludePreProcessNode(ctxt, cur);
2338	while ((cur != NULL) && (cur != tree->parent)) {
2339	/* TODO: need to work on entities -> stack */
2340	if ((cur->children != NULL) &&
2341	(cur->children->type != XML_ENTITY_DECL) &&
2342	(cur->children->type != XML_XINCLUDE_START) &&
2343	(cur->children->type != XML_XINCLUDE_END)) {
2344	cur = cur->children;
2345	if (xmlXIncludeTestNode(ctxt, cur))
2346	xmlXIncludePreProcessNode(ctxt, cur);
2347	} else if (cur->next != NULL) {
2348	cur = cur->next;
2349	if (xmlXIncludeTestNode(ctxt, cur))
2350	xmlXIncludePreProcessNode(ctxt, cur);
2351	} else {
2352	if (cur == tree)
2353	break;
2354	do {
2355	cur = cur->parent;
2356	if ((cur == NULL) \|\| (cur == tree->parent))
2357	break; /* do */
2358	if (cur->next != NULL) {
2359	cur = cur->next;
2360	if (xmlXIncludeTestNode(ctxt, cur))
2361	xmlXIncludePreProcessNode(ctxt, cur);
2362	break; /* do */
2363	}
2364	} while (cur != NULL);
2365	}
2366	}
2367
2368	/*
2369	* Second Phase : collect the infosets fragments
2370	*/
2371	for (i = start;i < ctxt->incNr; i++) {
2372	xmlXIncludeLoadNode(ctxt, i);
2373	ret++;
2374	}
2375
2376	/*
2377	* Third phase: extend the original document infoset.
2378	*
2379	* Originally we bypassed the inclusion if there were any errors
2380	* encountered on any of the XIncludes. A bug was raised (bug
2381	* 132588) requesting that we output the XIncludes without error,
2382	* so the check for inc!=NULL \|\| xptr!=NULL was put in. This may
2383	* give some other problems in the future, but for now it seems to
2384	* work ok.
2385	*
2386	*/
2387	for (i = ctxt->incBase;i < ctxt->incNr; i++) {
2388	if ((ctxt->incTab[i]->inc != NULL) \|\|
2389	(ctxt->incTab[i]->xptr != NULL) \|\|
2390	(ctxt->incTab[i]->emptyFb != 0)) /* (empty fallback) */
2391	xmlXIncludeIncludeNode(ctxt, i);
2392	}
2393
2394	if (doc->URL != NULL)
2395	xmlXIncludeURLPop(ctxt);
2396	return(ret);
2397	}
2398
2399	/**
2400	* xmlXIncludeSetFlags:
2401	* @ctxt: an XInclude processing context
2402	* @flags: a set of xmlParserOption used for parsing XML includes
2403	*
2404	* Set the flags used for further processing of XML resources.
2405	*
2406	* Returns 0 in case of success and -1 in case of error.
2407	*/
2408	int
2409	xmlXIncludeSetFlags(xmlXIncludeCtxtPtr ctxt, int flags) {
2410	if (ctxt == NULL)
2411	return(-1);
2412	ctxt->parseFlags = flags;
2413	return(0);
2414	}
2415
2416	/**
2417	* xmlXIncludeProcessFlagsData:
2418	* @doc: an XML document
2419	* @flags: a set of xmlParserOption used for parsing XML includes
2420	* @data: application data that will be passed to the parser context
2421	* in the _private field of the parser context(s)
2422	*
2423	* Implement the XInclude substitution on the XML document @doc
2424	*
2425	* Returns 0 if no substitution were done, -1 if some processing failed
2426	* or the number of substitutions done.
2427	*/
2428	int
2429	xmlXIncludeProcessFlagsData(xmlDocPtr doc, int flags, void *data) {
2430	xmlXIncludeCtxtPtr ctxt;
2431	xmlNodePtr tree;
2432	int ret = 0;
2433
2434	if (doc == NULL)
2435	return(-1);
2436	tree = xmlDocGetRootElement(doc);
2437	if (tree == NULL)
2438	return(-1);
2439	ctxt = xmlXIncludeNewContext(doc);
2440	if (ctxt == NULL)
2441	return(-1);
2442	ctxt->_private = data;
2443	ctxt->base = xmlStrdup((xmlChar *)doc->URL);
2444	xmlXIncludeSetFlags(ctxt, flags);
2445	ret = xmlXIncludeDoProcess(ctxt, doc, tree);
2446	if ((ret >= 0) && (ctxt->nbErrors > 0))
2447	ret = -1;
2448
2449	xmlXIncludeFreeContext(ctxt);
2450	return(ret);
2451	}
2452
2453	/**
2454	* xmlXIncludeProcessFlags:
2455	* @doc: an XML document
2456	* @flags: a set of xmlParserOption used for parsing XML includes
2457	*
2458	* Implement the XInclude substitution on the XML document @doc
2459	*
2460	* Returns 0 if no substitution were done, -1 if some processing failed
2461	* or the number of substitutions done.
2462	*/
2463	int
2464	xmlXIncludeProcessFlags(xmlDocPtr doc, int flags) {
2465	return xmlXIncludeProcessFlagsData(doc, flags, NULL);
2466	}
2467
2468	/**
2469	* xmlXIncludeProcess:
2470	* @doc: an XML document
2471	*
2472	* Implement the XInclude substitution on the XML document @doc
2473	*
2474	* Returns 0 if no substitution were done, -1 if some processing failed
2475	* or the number of substitutions done.
2476	*/
2477	int
2478	xmlXIncludeProcess(xmlDocPtr doc) {
2479	return(xmlXIncludeProcessFlags(doc, 0));
2480	}
2481
2482	/**
2483	* xmlXIncludeProcessTreeFlags:
2484	* @tree: a node in an XML document
2485	* @flags: a set of xmlParserOption used for parsing XML includes
2486	*
2487	* Implement the XInclude substitution for the given subtree
2488	*
2489	* Returns 0 if no substitution were done, -1 if some processing failed
2490	* or the number of substitutions done.
2491	*/
2492	int
2493	xmlXIncludeProcessTreeFlags(xmlNodePtr tree, int flags) {
2494	xmlXIncludeCtxtPtr ctxt;
2495	int ret = 0;
2496
2497	if ((tree == NULL) \|\| (tree->doc == NULL))
2498	return(-1);
2499	ctxt = xmlXIncludeNewContext(tree->doc);
2500	if (ctxt == NULL)
2501	return(-1);
2502	ctxt->base = xmlNodeGetBase(tree->doc, tree);
2503	xmlXIncludeSetFlags(ctxt, flags);
2504	ret = xmlXIncludeDoProcess(ctxt, tree->doc, tree);
2505	if ((ret >= 0) && (ctxt->nbErrors > 0))
2506	ret = -1;
2507
2508	xmlXIncludeFreeContext(ctxt);
2509	return(ret);
2510	}
2511
2512	/**
2513	* xmlXIncludeProcessTree:
2514	* @tree: a node in an XML document
2515	*
2516	* Implement the XInclude substitution for the given subtree
2517	*
2518	* Returns 0 if no substitution were done, -1 if some processing failed
2519	* or the number of substitutions done.
2520	*/
2521	int
2522	xmlXIncludeProcessTree(xmlNodePtr tree) {
2523	return(xmlXIncludeProcessTreeFlags(tree, 0));
2524	}
2525
2526	/**
2527	* xmlXIncludeProcessNode:
2528	* @ctxt: an existing XInclude context
2529	* @node: a node in an XML document
2530	*
2531	* Implement the XInclude substitution for the given subtree reusing
2532	* the informations and data coming from the given context.
2533	*
2534	* Returns 0 if no substitution were done, -1 if some processing failed
2535	* or the number of substitutions done.
2536	*/
2537	int
2538	xmlXIncludeProcessNode(xmlXIncludeCtxtPtr ctxt, xmlNodePtr node) {
2539	int ret = 0;
2540
2541	if ((node == NULL) \|\| (node->doc == NULL) \|\| (ctxt == NULL))
2542	return(-1);
2543	ret = xmlXIncludeDoProcess(ctxt, node->doc, node);
2544	if ((ret >= 0) && (ctxt->nbErrors > 0))
2545	ret = -1;
2546	return(ret);
2547	}
2548
2549	#else /* !LIBXML_XINCLUDE_ENABLED */
2550	#endif
2551	#define bottom_xinclude
2552	#include "elfgcchack.h"

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source: vbox/trunk/src/libs/libxml2-2.6.31/xinclude.c@ 51892

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