tree.c@ 102315

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libs/{curl,libxml2}: OSE export fixes, bugref:8515
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1	/*
2	* tree.c : implementation of access function for an XML tree.
3	*
4	* References:
5	* XHTML 1.0 W3C REC: http://www.w3.org/TR/2002/REC-xhtml1-20020801/
6	*
7	* See Copyright for the status of this software.
8	*
9	* [email protected]
10	*
11	*/
12
13	/* To avoid EBCDIC trouble when parsing on zOS */
14	#if defined(__MVS__)
15	#pragma convert("ISO8859-1")
16	#endif
17
18	#define IN_LIBXML
19	#include "libxml.h"
20
21	#include <string.h> /* for memset() only ! */
22	#include <stddef.h>
23	#include <limits.h>
24	#ifdef HAVE_CTYPE_H
25	#include <ctype.h>
26	#endif
27	#ifdef HAVE_STDLIB_H
28	#include <stdlib.h>
29	#endif
30	#ifdef LIBXML_ZLIB_ENABLED
31	#include <zlib.h>
32	#endif
33
34	#include <libxml/xmlmemory.h>
35	#include <libxml/tree.h>
36	#include <libxml/parser.h>
37	#include <libxml/uri.h>
38	#include <libxml/entities.h>
39	#include <libxml/valid.h>
40	#include <libxml/xmlerror.h>
41	#include <libxml/parserInternals.h>
42	#include <libxml/globals.h>
43	#ifdef LIBXML_HTML_ENABLED
44	#include <libxml/HTMLtree.h>
45	#endif
46	#ifdef LIBXML_DEBUG_ENABLED
47	#include <libxml/debugXML.h>
48	#endif
49
50	#include "buf.h"
51	#include "save.h"
52
53	int __xmlRegisterCallbacks = 0;
54
55	/************************************************************************
56	* *
57	* Forward declarations *
58	* *
59	************************************************************************/
60
61	static xmlNsPtr
62	xmlNewReconciledNs(xmlDocPtr doc, xmlNodePtr tree, xmlNsPtr ns);
63
64	static xmlChar* xmlGetPropNodeValueInternal(const xmlAttr *prop);
65
66	/************************************************************************
67	* *
68	* Tree memory error handler *
69	* *
70	************************************************************************/
71	/**
72	* xmlTreeErrMemory:
73	* @extra: extra information
74	*
75	* Handle an out of memory condition
76	*/
77	static void
78	xmlTreeErrMemory(const char *extra)
79	{
80	__xmlSimpleError(XML_FROM_TREE, XML_ERR_NO_MEMORY, NULL, NULL, extra);
81	}
82
83	/**
84	* xmlTreeErr:
85	* @code: the error number
86	* @extra: extra information
87	*
88	* Handle an out of memory condition
89	*/
90	static void
91	xmlTreeErr(int code, xmlNodePtr node, const char *extra)
92	{
93	const char *msg = NULL;
94
95	switch(code) {
96	case XML_TREE_INVALID_HEX:
97	msg = "invalid hexadecimal character value\n";
98	break;
99	case XML_TREE_INVALID_DEC:
100	msg = "invalid decimal character value\n";
101	break;
102	case XML_TREE_UNTERMINATED_ENTITY:
103	msg = "unterminated entity reference %15s\n";
104	break;
105	case XML_TREE_NOT_UTF8:
106	msg = "string is not in UTF-8\n";
107	break;
108	default:
109	msg = "unexpected error number\n";
110	}
111	__xmlSimpleError(XML_FROM_TREE, code, node, msg, extra);
112	}
113
114	/************************************************************************
115	* *
116	* A few static variables and macros *
117	* *
118	************************************************************************/
119	/* #undef xmlStringText */
120	const xmlChar xmlStringText[] = { 't', 'e', 'x', 't', 0 };
121	/* #undef xmlStringTextNoenc */
122	const xmlChar xmlStringTextNoenc[] =
123	{ 't', 'e', 'x', 't', 'n', 'o', 'e', 'n', 'c', 0 };
124	/* #undef xmlStringComment */
125	const xmlChar xmlStringComment[] = { 'c', 'o', 'm', 'm', 'e', 'n', 't', 0 };
126
127	static int xmlCompressMode = 0;
128	static int xmlCheckDTD = 1;
129
130	#define UPDATE_LAST_CHILD_AND_PARENT(n) if ((n) != NULL) { \
131	xmlNodePtr ulccur = (n)->children; \
132	if (ulccur == NULL) { \
133	(n)->last = NULL; \
134	} else { \
135	while (ulccur->next != NULL) { \
136	ulccur->parent = (n); \
137	ulccur = ulccur->next; \
138	} \
139	ulccur->parent = (n); \
140	(n)->last = ulccur; \
141	}}
142
143	#define IS_STR_XML(str) ((str != NULL) && (str[0] == 'x') && \
144	(str[1] == 'm') && (str[2] == 'l') && (str[3] == 0))
145
146	/* #define DEBUG_BUFFER */
147	/* #define DEBUG_TREE */
148
149	/************************************************************************
150	* *
151	* Functions to move to entities.c once the *
152	* API freeze is smoothen and they can be made public. *
153	* *
154	************************************************************************/
155	#include <libxml/hash.h>
156
157	#ifdef LIBXML_TREE_ENABLED
158	/**
159	* xmlGetEntityFromDtd:
160	* @dtd: A pointer to the DTD to search
161	* @name: The entity name
162	*
163	* Do an entity lookup in the DTD entity hash table and
164	* return the corresponding entity, if found.
165	*
166	* Returns A pointer to the entity structure or NULL if not found.
167	*/
168	static xmlEntityPtr
169	xmlGetEntityFromDtd(const xmlDtd dtd, const xmlChar name) {
170	xmlEntitiesTablePtr table;
171
172	if((dtd != NULL) && (dtd->entities != NULL)) {
173	table = (xmlEntitiesTablePtr) dtd->entities;
174	return((xmlEntityPtr) xmlHashLookup(table, name));
175	/* return(xmlGetEntityFromTable(table, name)); */
176	}
177	return(NULL);
178	}
179	/**
180	* xmlGetParameterEntityFromDtd:
181	* @dtd: A pointer to the DTD to search
182	* @name: The entity name
183	*
184	* Do an entity lookup in the DTD parameter entity hash table and
185	* return the corresponding entity, if found.
186	*
187	* Returns A pointer to the entity structure or NULL if not found.
188	*/
189	static xmlEntityPtr
190	xmlGetParameterEntityFromDtd(const xmlDtd dtd, const xmlChar name) {
191	xmlEntitiesTablePtr table;
192
193	if ((dtd != NULL) && (dtd->pentities != NULL)) {
194	table = (xmlEntitiesTablePtr) dtd->pentities;
195	return((xmlEntityPtr) xmlHashLookup(table, name));
196	/* return(xmlGetEntityFromTable(table, name)); */
197	}
198	return(NULL);
199	}
200	#endif /* LIBXML_TREE_ENABLED */
201
202	/************************************************************************
203	* *
204	* QName handling helper *
205	* *
206	************************************************************************/
207
208	/**
209	* xmlBuildQName:
210	* @ncname: the Name
211	* @prefix: the prefix
212	* @memory: preallocated memory
213	* @len: preallocated memory length
214	*
215	* Builds the QName @prefix:@ncname in @memory if there is enough space
216	* and prefix is not NULL nor empty, otherwise allocate a new string.
217	* If prefix is NULL or empty it returns ncname.
218	*
219	* Returns the new string which must be freed by the caller if different from
220	* @memory and @ncname or NULL in case of error
221	*/
222	xmlChar *
223	xmlBuildQName(const xmlChar ncname, const xmlChar prefix,
224	xmlChar *memory, int len) {
225	int lenn, lenp;
226	xmlChar *ret;
227
228	if (ncname == NULL) return(NULL);
229	if (prefix == NULL) return((xmlChar *) ncname);
230
231	lenn = strlen((char *) ncname);
232	lenp = strlen((char *) prefix);
233
234	if ((memory == NULL) \|\| (len < lenn + lenp + 2)) {
235	ret = (xmlChar *) xmlMallocAtomic(lenn + lenp + 2);
236	if (ret == NULL) {
237	xmlTreeErrMemory("building QName");
238	return(NULL);
239	}
240	} else {
241	ret = memory;
242	}
243	memcpy(&ret[0], prefix, lenp);
244	ret[lenp] = ':';
245	memcpy(&ret[lenp + 1], ncname, lenn);
246	ret[lenn + lenp + 1] = 0;
247	return(ret);
248	}
249
250	/**
251	* xmlSplitQName2:
252	* @name: the full QName
253	* @prefix: a xmlChar **
254	*
255	* parse an XML qualified name string
256	*
257	* [NS 5] QName ::= (Prefix ':')? LocalPart
258	*
259	* [NS 6] Prefix ::= NCName
260	*
261	* [NS 7] LocalPart ::= NCName
262	*
263	* Returns NULL if the name doesn't have a prefix. Otherwise, returns the
264	* local part, and prefix is updated to get the Prefix. Both the return value
265	* and the prefix must be freed by the caller.
266	*/
267	xmlChar *
268	xmlSplitQName2(const xmlChar name, xmlChar *prefix) {
269	int len = 0;
270	xmlChar *ret = NULL;
271
272	if (prefix == NULL) return(NULL);
273	*prefix = NULL;
274	if (name == NULL) return(NULL);
275
276	#ifndef XML_XML_NAMESPACE
277	/* xml: prefix is not really a namespace */
278	if ((name[0] == 'x') && (name[1] == 'm') &&
279	(name[2] == 'l') && (name[3] == ':'))
280	return(NULL);
281	#endif
282
283	/* nasty but valid */
284	if (name[0] == ':')
285	return(NULL);
286
287	/*
288	* we are not trying to validate but just to cut, and yes it will
289	* work even if this is as set of UTF-8 encoded chars
290	*/
291	while ((name[len] != 0) && (name[len] != ':'))
292	len++;
293
294	if (name[len] == 0)
295	return(NULL);
296
297	*prefix = xmlStrndup(name, len);
298	if (*prefix == NULL) {
299	xmlTreeErrMemory("QName split");
300	return(NULL);
301	}
302	ret = xmlStrdup(&name[len + 1]);
303	if (ret == NULL) {
304	xmlTreeErrMemory("QName split");
305	if (*prefix != NULL) {
306	xmlFree(*prefix);
307	*prefix = NULL;
308	}
309	return(NULL);
310	}
311
312	return(ret);
313	}
314
315	/**
316	* xmlSplitQName3:
317	* @name: the full QName
318	* @len: an int *
319	*
320	* parse an XML qualified name string,i
321	*
322	* returns NULL if it is not a Qualified Name, otherwise, update len
323	* with the length in byte of the prefix and return a pointer
324	* to the start of the name without the prefix
325	*/
326
327	const xmlChar *
328	xmlSplitQName3(const xmlChar name, int len) {
329	int l = 0;
330
331	if (name == NULL) return(NULL);
332	if (len == NULL) return(NULL);
333
334	/* nasty but valid */
335	if (name[0] == ':')
336	return(NULL);
337
338	/*
339	* we are not trying to validate but just to cut, and yes it will
340	* work even if this is as set of UTF-8 encoded chars
341	*/
342	while ((name[l] != 0) && (name[l] != ':'))
343	l++;
344
345	if (name[l] == 0)
346	return(NULL);
347
348	*len = l;
349
350	return(&name[l+1]);
351	}
352
353	/************************************************************************
354	* *
355	* Check Name, NCName and QName strings *
356	* *
357	************************************************************************/
358
359	#define CUR_SCHAR(s, l) xmlStringCurrentChar(NULL, s, &l)
360
361	#if defined(LIBXML_TREE_ENABLED) \|\| defined(LIBXML_XPATH_ENABLED) \|\| defined(LIBXML_SCHEMAS_ENABLED) \|\| defined(LIBXML_DEBUG_ENABLED) \|\| defined (LIBXML_HTML_ENABLED) \|\| defined(LIBXML_SAX1_ENABLED) \|\| defined(LIBXML_HTML_ENABLED) \|\| defined(LIBXML_WRITER_ENABLED) \|\| defined(LIBXML_DOCB_ENABLED) \|\| defined(LIBXML_LEGACY_ENABLED)
362	/**
363	* xmlValidateNCName:
364	* @value: the value to check
365	* @space: allow spaces in front and end of the string
366	*
367	* Check that a value conforms to the lexical space of NCName
368	*
369	* Returns 0 if this validates, a positive error code number otherwise
370	* and -1 in case of internal or API error.
371	*/
372	int
373	xmlValidateNCName(const xmlChar *value, int space) {
374	const xmlChar *cur = value;
375	int c,l;
376
377	if (value == NULL)
378	return(-1);
379
380	/*
381	* First quick algorithm for ASCII range
382	*/
383	if (space)
384	while (IS_BLANK_CH(*cur)) cur++;
385	if (((cur >= 'a') && (cur <= 'z')) \|\| ((cur >= 'A') && (cur <= 'Z')) \|\|
386	(*cur == '_'))
387	cur++;
388	else
389	goto try_complex;
390	while (((cur >= 'a') && (cur <= 'z')) \|\|
391	((cur >= 'A') && (cur <= 'Z')) \|\|
392	((cur >= '0') && (cur <= '9')) \|\|
393	(cur == '_') \|\| (cur == '-') \|\| (*cur == '.'))
394	cur++;
395	if (space)
396	while (IS_BLANK_CH(*cur)) cur++;
397	if (*cur == 0)
398	return(0);
399
400	try_complex:
401	/*
402	* Second check for chars outside the ASCII range
403	*/
404	cur = value;
405	c = CUR_SCHAR(cur, l);
406	if (space) {
407	while (IS_BLANK(c)) {
408	cur += l;
409	c = CUR_SCHAR(cur, l);
410	}
411	}
412	if ((!IS_LETTER(c)) && (c != '_'))
413	return(1);
414	cur += l;
415	c = CUR_SCHAR(cur, l);
416	while (IS_LETTER(c) \|\| IS_DIGIT(c) \|\| (c == '.') \|\|
417	(c == '-') \|\| (c == '_') \|\| IS_COMBINING(c) \|\|
418	IS_EXTENDER(c)) {
419	cur += l;
420	c = CUR_SCHAR(cur, l);
421	}
422	if (space) {
423	while (IS_BLANK(c)) {
424	cur += l;
425	c = CUR_SCHAR(cur, l);
426	}
427	}
428	if (c != 0)
429	return(1);
430
431	return(0);
432	}
433	#endif
434
435	#if defined(LIBXML_TREE_ENABLED) \|\| defined(LIBXML_SCHEMAS_ENABLED)
436	/**
437	* xmlValidateQName:
438	* @value: the value to check
439	* @space: allow spaces in front and end of the string
440	*
441	* Check that a value conforms to the lexical space of QName
442	*
443	* Returns 0 if this validates, a positive error code number otherwise
444	* and -1 in case of internal or API error.
445	*/
446	int
447	xmlValidateQName(const xmlChar *value, int space) {
448	const xmlChar *cur = value;
449	int c,l;
450
451	if (value == NULL)
452	return(-1);
453	/*
454	* First quick algorithm for ASCII range
455	*/
456	if (space)
457	while (IS_BLANK_CH(*cur)) cur++;
458	if (((cur >= 'a') && (cur <= 'z')) \|\| ((cur >= 'A') && (cur <= 'Z')) \|\|
459	(*cur == '_'))
460	cur++;
461	else
462	goto try_complex;
463	while (((cur >= 'a') && (cur <= 'z')) \|\|
464	((cur >= 'A') && (cur <= 'Z')) \|\|
465	((cur >= '0') && (cur <= '9')) \|\|
466	(cur == '_') \|\| (cur == '-') \|\| (*cur == '.'))
467	cur++;
468	if (*cur == ':') {
469	cur++;
470	if (((cur >= 'a') && (cur <= 'z')) \|\|
471	((cur >= 'A') && (cur <= 'Z')) \|\|
472	(*cur == '_'))
473	cur++;
474	else
475	goto try_complex;
476	while (((cur >= 'a') && (cur <= 'z')) \|\|
477	((cur >= 'A') && (cur <= 'Z')) \|\|
478	((cur >= '0') && (cur <= '9')) \|\|
479	(cur == '_') \|\| (cur == '-') \|\| (*cur == '.'))
480	cur++;
481	}
482	if (space)
483	while (IS_BLANK_CH(*cur)) cur++;
484	if (*cur == 0)
485	return(0);
486
487	try_complex:
488	/*
489	* Second check for chars outside the ASCII range
490	*/
491	cur = value;
492	c = CUR_SCHAR(cur, l);
493	if (space) {
494	while (IS_BLANK(c)) {
495	cur += l;
496	c = CUR_SCHAR(cur, l);
497	}
498	}
499	if ((!IS_LETTER(c)) && (c != '_'))
500	return(1);
501	cur += l;
502	c = CUR_SCHAR(cur, l);
503	while (IS_LETTER(c) \|\| IS_DIGIT(c) \|\| (c == '.') \|\|
504	(c == '-') \|\| (c == '_') \|\| IS_COMBINING(c) \|\|
505	IS_EXTENDER(c)) {
506	cur += l;
507	c = CUR_SCHAR(cur, l);
508	}
509	if (c == ':') {
510	cur += l;
511	c = CUR_SCHAR(cur, l);
512	if ((!IS_LETTER(c)) && (c != '_'))
513	return(1);
514	cur += l;
515	c = CUR_SCHAR(cur, l);
516	while (IS_LETTER(c) \|\| IS_DIGIT(c) \|\| (c == '.') \|\|
517	(c == '-') \|\| (c == '_') \|\| IS_COMBINING(c) \|\|
518	IS_EXTENDER(c)) {
519	cur += l;
520	c = CUR_SCHAR(cur, l);
521	}
522	}
523	if (space) {
524	while (IS_BLANK(c)) {
525	cur += l;
526	c = CUR_SCHAR(cur, l);
527	}
528	}
529	if (c != 0)
530	return(1);
531	return(0);
532	}
533
534	/**
535	* xmlValidateName:
536	* @value: the value to check
537	* @space: allow spaces in front and end of the string
538	*
539	* Check that a value conforms to the lexical space of Name
540	*
541	* Returns 0 if this validates, a positive error code number otherwise
542	* and -1 in case of internal or API error.
543	*/
544	int
545	xmlValidateName(const xmlChar *value, int space) {
546	const xmlChar *cur = value;
547	int c,l;
548
549	if (value == NULL)
550	return(-1);
551	/*
552	* First quick algorithm for ASCII range
553	*/
554	if (space)
555	while (IS_BLANK_CH(*cur)) cur++;
556	if (((cur >= 'a') && (cur <= 'z')) \|\| ((cur >= 'A') && (cur <= 'Z')) \|\|
557	(cur == '_') \|\| (cur == ':'))
558	cur++;
559	else
560	goto try_complex;
561	while (((cur >= 'a') && (cur <= 'z')) \|\|
562	((cur >= 'A') && (cur <= 'Z')) \|\|
563	((cur >= '0') && (cur <= '9')) \|\|
564	(cur == '_') \|\| (cur == '-') \|\| (cur == '.') \|\| (cur == ':'))
565	cur++;
566	if (space)
567	while (IS_BLANK_CH(*cur)) cur++;
568	if (*cur == 0)
569	return(0);
570
571	try_complex:
572	/*
573	* Second check for chars outside the ASCII range
574	*/
575	cur = value;
576	c = CUR_SCHAR(cur, l);
577	if (space) {
578	while (IS_BLANK(c)) {
579	cur += l;
580	c = CUR_SCHAR(cur, l);
581	}
582	}
583	if ((!IS_LETTER(c)) && (c != '_') && (c != ':'))
584	return(1);
585	cur += l;
586	c = CUR_SCHAR(cur, l);
587	while (IS_LETTER(c) \|\| IS_DIGIT(c) \|\| (c == '.') \|\| (c == ':') \|\|
588	(c == '-') \|\| (c == '_') \|\| IS_COMBINING(c) \|\| IS_EXTENDER(c)) {
589	cur += l;
590	c = CUR_SCHAR(cur, l);
591	}
592	if (space) {
593	while (IS_BLANK(c)) {
594	cur += l;
595	c = CUR_SCHAR(cur, l);
596	}
597	}
598	if (c != 0)
599	return(1);
600	return(0);
601	}
602
603	/**
604	* xmlValidateNMToken:
605	* @value: the value to check
606	* @space: allow spaces in front and end of the string
607	*
608	* Check that a value conforms to the lexical space of NMToken
609	*
610	* Returns 0 if this validates, a positive error code number otherwise
611	* and -1 in case of internal or API error.
612	*/
613	int
614	xmlValidateNMToken(const xmlChar *value, int space) {
615	const xmlChar *cur = value;
616	int c,l;
617
618	if (value == NULL)
619	return(-1);
620	/*
621	* First quick algorithm for ASCII range
622	*/
623	if (space)
624	while (IS_BLANK_CH(*cur)) cur++;
625	if (((cur >= 'a') && (cur <= 'z')) \|\|
626	((cur >= 'A') && (cur <= 'Z')) \|\|
627	((cur >= '0') && (cur <= '9')) \|\|
628	(cur == '_') \|\| (cur == '-') \|\| (cur == '.') \|\| (cur == ':'))
629	cur++;
630	else
631	goto try_complex;
632	while (((cur >= 'a') && (cur <= 'z')) \|\|
633	((cur >= 'A') && (cur <= 'Z')) \|\|
634	((cur >= '0') && (cur <= '9')) \|\|
635	(cur == '_') \|\| (cur == '-') \|\| (cur == '.') \|\| (cur == ':'))
636	cur++;
637	if (space)
638	while (IS_BLANK_CH(*cur)) cur++;
639	if (*cur == 0)
640	return(0);
641
642	try_complex:
643	/*
644	* Second check for chars outside the ASCII range
645	*/
646	cur = value;
647	c = CUR_SCHAR(cur, l);
648	if (space) {
649	while (IS_BLANK(c)) {
650	cur += l;
651	c = CUR_SCHAR(cur, l);
652	}
653	}
654	if (!(IS_LETTER(c) \|\| IS_DIGIT(c) \|\| (c == '.') \|\| (c == ':') \|\|
655	(c == '-') \|\| (c == '_') \|\| IS_COMBINING(c) \|\| IS_EXTENDER(c)))
656	return(1);
657	cur += l;
658	c = CUR_SCHAR(cur, l);
659	while (IS_LETTER(c) \|\| IS_DIGIT(c) \|\| (c == '.') \|\| (c == ':') \|\|
660	(c == '-') \|\| (c == '_') \|\| IS_COMBINING(c) \|\| IS_EXTENDER(c)) {
661	cur += l;
662	c = CUR_SCHAR(cur, l);
663	}
664	if (space) {
665	while (IS_BLANK(c)) {
666	cur += l;
667	c = CUR_SCHAR(cur, l);
668	}
669	}
670	if (c != 0)
671	return(1);
672	return(0);
673	}
674	#endif /* LIBXML_TREE_ENABLED */
675
676	/************************************************************************
677	* *
678	* Allocation and deallocation of basic structures *
679	* *
680	************************************************************************/
681
682	/**
683	* xmlSetBufferAllocationScheme:
684	* @scheme: allocation method to use
685	*
686	* Set the buffer allocation method. Types are
687	* XML_BUFFER_ALLOC_EXACT - use exact sizes, keeps memory usage down
688	* XML_BUFFER_ALLOC_DOUBLEIT - double buffer when extra needed,
689	* improves performance
690	*/
691	void
692	xmlSetBufferAllocationScheme(xmlBufferAllocationScheme scheme) {
693	if ((scheme == XML_BUFFER_ALLOC_EXACT) \|\|
694	(scheme == XML_BUFFER_ALLOC_DOUBLEIT) \|\|
695	(scheme == XML_BUFFER_ALLOC_HYBRID))
696	xmlBufferAllocScheme = scheme;
697	}
698
699	/**
700	* xmlGetBufferAllocationScheme:
701	*
702	* Types are
703	* XML_BUFFER_ALLOC_EXACT - use exact sizes, keeps memory usage down
704	* XML_BUFFER_ALLOC_DOUBLEIT - double buffer when extra needed,
705	* improves performance
706	* XML_BUFFER_ALLOC_HYBRID - use exact sizes on small strings to keep memory usage tight
707	* in normal usage, and doubleit on large strings to avoid
708	* pathological performance.
709	*
710	* Returns the current allocation scheme
711	*/
712	xmlBufferAllocationScheme
713	xmlGetBufferAllocationScheme(void) {
714	return(xmlBufferAllocScheme);
715	}
716
717	/**
718	* xmlNewNs:
719	* @node: the element carrying the namespace
720	* @href: the URI associated
721	* @prefix: the prefix for the namespace
722	*
723	* Creation of a new Namespace. This function will refuse to create
724	* a namespace with a similar prefix than an existing one present on this
725	* node.
726	* Note that for a default namespace, @prefix should be NULL.
727	*
728	* We use href==NULL in the case of an element creation where the namespace
729	* was not defined.
730	*
731	* Returns a new namespace pointer or NULL
732	*/
733	xmlNsPtr
734	xmlNewNs(xmlNodePtr node, const xmlChar href, const xmlChar prefix) {
735	xmlNsPtr cur;
736
737	if ((node != NULL) && (node->type != XML_ELEMENT_NODE))
738	return(NULL);
739
740	if ((prefix != NULL) && (xmlStrEqual(prefix, BAD_CAST "xml"))) {
741	/* xml namespace is predefined, no need to add it */
742	if (xmlStrEqual(href, XML_XML_NAMESPACE))
743	return(NULL);
744
745	/*
746	* Problem, this is an attempt to bind xml prefix to a wrong
747	* namespace, which breaks
748	* Namespace constraint: Reserved Prefixes and Namespace Names
749	* from XML namespace. But documents authors may not care in
750	* their context so let's proceed.
751	*/
752	}
753
754	/*
755	* Allocate a new Namespace and fill the fields.
756	*/
757	cur = (xmlNsPtr) xmlMalloc(sizeof(xmlNs));
758	if (cur == NULL) {
759	xmlTreeErrMemory("building namespace");
760	return(NULL);
761	}
762	memset(cur, 0, sizeof(xmlNs));
763	cur->type = XML_LOCAL_NAMESPACE;
764
765	if (href != NULL)
766	cur->href = xmlStrdup(href);
767	if (prefix != NULL)
768	cur->prefix = xmlStrdup(prefix);
769
770	/*
771	* Add it at the end to preserve parsing order ...
772	* and checks for existing use of the prefix
773	*/
774	if (node != NULL) {
775	if (node->nsDef == NULL) {
776	node->nsDef = cur;
777	} else {
778	xmlNsPtr prev = node->nsDef;
779
780	if (((prev->prefix == NULL) && (cur->prefix == NULL)) \|\|
781	(xmlStrEqual(prev->prefix, cur->prefix))) {
782	xmlFreeNs(cur);
783	return(NULL);
784	}
785	while (prev->next != NULL) {
786	prev = prev->next;
787	if (((prev->prefix == NULL) && (cur->prefix == NULL)) \|\|
788	(xmlStrEqual(prev->prefix, cur->prefix))) {
789	xmlFreeNs(cur);
790	return(NULL);
791	}
792	}
793	prev->next = cur;
794	}
795	}
796	return(cur);
797	}
798
799	/**
800	* xmlSetNs:
801	* @node: a node in the document
802	* @ns: a namespace pointer
803	*
804	* Associate a namespace to a node, a posteriori.
805	*/
806	void
807	xmlSetNs(xmlNodePtr node, xmlNsPtr ns) {
808	if (node == NULL) {
809	#ifdef DEBUG_TREE
810	xmlGenericError(xmlGenericErrorContext,
811	"xmlSetNs: node == NULL\n");
812	#endif
813	return;
814	}
815	if ((node->type == XML_ELEMENT_NODE) \|\|
816	(node->type == XML_ATTRIBUTE_NODE))
817	node->ns = ns;
818	}
819
820	/**
821	* xmlFreeNs:
822	* @cur: the namespace pointer
823	*
824	* Free up the structures associated to a namespace
825	*/
826	void
827	xmlFreeNs(xmlNsPtr cur) {
828	if (cur == NULL) {
829	#ifdef DEBUG_TREE
830	xmlGenericError(xmlGenericErrorContext,
831	"xmlFreeNs : ns == NULL\n");
832	#endif
833	return;
834	}
835	if (cur->href != NULL) xmlFree((char *) cur->href);
836	if (cur->prefix != NULL) xmlFree((char *) cur->prefix);
837	xmlFree(cur);
838	}
839
840	/**
841	* xmlFreeNsList:
842	* @cur: the first namespace pointer
843	*
844	* Free up all the structures associated to the chained namespaces.
845	*/
846	void
847	xmlFreeNsList(xmlNsPtr cur) {
848	xmlNsPtr next;
849	if (cur == NULL) {
850	#ifdef DEBUG_TREE
851	xmlGenericError(xmlGenericErrorContext,
852	"xmlFreeNsList : ns == NULL\n");
853	#endif
854	return;
855	}
856	while (cur != NULL) {
857	next = cur->next;
858	xmlFreeNs(cur);
859	cur = next;
860	}
861	}
862
863	/**
864	* xmlNewDtd:
865	* @doc: the document pointer
866	* @name: the DTD name
867	* @ExternalID: the external ID
868	* @SystemID: the system ID
869	*
870	* Creation of a new DTD for the external subset. To create an
871	* internal subset, use xmlCreateIntSubset().
872	*
873	* Returns a pointer to the new DTD structure
874	*/
875	xmlDtdPtr
876	xmlNewDtd(xmlDocPtr doc, const xmlChar *name,
877	const xmlChar ExternalID, const xmlChar SystemID) {
878	xmlDtdPtr cur;
879
880	if ((doc != NULL) && (doc->extSubset != NULL)) {
881	#ifdef DEBUG_TREE
882	xmlGenericError(xmlGenericErrorContext,
883	"xmlNewDtd(%s): document %s already have a DTD %s\n",
884	/* !!! / (char ) name, doc->name,
885	/* !!! / (char )doc->extSubset->name);
886	#endif
887	return(NULL);
888	}
889
890	/*
891	* Allocate a new DTD and fill the fields.
892	*/
893	cur = (xmlDtdPtr) xmlMalloc(sizeof(xmlDtd));
894	if (cur == NULL) {
895	xmlTreeErrMemory("building DTD");
896	return(NULL);
897	}
898	memset(cur, 0 , sizeof(xmlDtd));
899	cur->type = XML_DTD_NODE;
900
901	if (name != NULL)
902	cur->name = xmlStrdup(name);
903	if (ExternalID != NULL)
904	cur->ExternalID = xmlStrdup(ExternalID);
905	if (SystemID != NULL)
906	cur->SystemID = xmlStrdup(SystemID);
907	if (doc != NULL)
908	doc->extSubset = cur;
909	cur->doc = doc;
910
911	if ((__xmlRegisterCallbacks) && (xmlRegisterNodeDefaultValue))
912	xmlRegisterNodeDefaultValue((xmlNodePtr)cur);
913	return(cur);
914	}
915
916	/**
917	* xmlGetIntSubset:
918	* @doc: the document pointer
919	*
920	* Get the internal subset of a document
921	* Returns a pointer to the DTD structure or NULL if not found
922	*/
923
924	xmlDtdPtr
925	xmlGetIntSubset(const xmlDoc *doc) {
926	xmlNodePtr cur;
927
928	if (doc == NULL)
929	return(NULL);
930	cur = doc->children;
931	while (cur != NULL) {
932	if (cur->type == XML_DTD_NODE)
933	return((xmlDtdPtr) cur);
934	cur = cur->next;
935	}
936	return((xmlDtdPtr) doc->intSubset);
937	}
938
939	/**
940	* xmlCreateIntSubset:
941	* @doc: the document pointer
942	* @name: the DTD name
943	* @ExternalID: the external (PUBLIC) ID
944	* @SystemID: the system ID
945	*
946	* Create the internal subset of a document
947	* Returns a pointer to the new DTD structure
948	*/
949	xmlDtdPtr
950	xmlCreateIntSubset(xmlDocPtr doc, const xmlChar *name,
951	const xmlChar ExternalID, const xmlChar SystemID) {
952	xmlDtdPtr cur;
953
954	if ((doc != NULL) && (xmlGetIntSubset(doc) != NULL)) {
955	#ifdef DEBUG_TREE
956	xmlGenericError(xmlGenericErrorContext,
957
958	"xmlCreateIntSubset(): document %s already have an internal subset\n",
959	doc->name);
960	#endif
961	return(NULL);
962	}
963
964	/*
965	* Allocate a new DTD and fill the fields.
966	*/
967	cur = (xmlDtdPtr) xmlMalloc(sizeof(xmlDtd));
968	if (cur == NULL) {
969	xmlTreeErrMemory("building internal subset");
970	return(NULL);
971	}
972	memset(cur, 0, sizeof(xmlDtd));
973	cur->type = XML_DTD_NODE;
974
975	if (name != NULL) {
976	cur->name = xmlStrdup(name);
977	if (cur->name == NULL) {
978	xmlTreeErrMemory("building internal subset");
979	xmlFree(cur);
980	return(NULL);
981	}
982	}
983	if (ExternalID != NULL) {
984	cur->ExternalID = xmlStrdup(ExternalID);
985	if (cur->ExternalID == NULL) {
986	xmlTreeErrMemory("building internal subset");
987	if (cur->name != NULL)
988	xmlFree((char *)cur->name);
989	xmlFree(cur);
990	return(NULL);
991	}
992	}
993	if (SystemID != NULL) {
994	cur->SystemID = xmlStrdup(SystemID);
995	if (cur->SystemID == NULL) {
996	xmlTreeErrMemory("building internal subset");
997	if (cur->name != NULL)
998	xmlFree((char *)cur->name);
999	if (cur->ExternalID != NULL)
1000	xmlFree((char *)cur->ExternalID);
1001	xmlFree(cur);
1002	return(NULL);
1003	}
1004	}
1005	if (doc != NULL) {
1006	doc->intSubset = cur;
1007	cur->parent = doc;
1008	cur->doc = doc;
1009	if (doc->children == NULL) {
1010	doc->children = (xmlNodePtr) cur;
1011	doc->last = (xmlNodePtr) cur;
1012	} else {
1013	if (doc->type == XML_HTML_DOCUMENT_NODE) {
1014	xmlNodePtr prev;
1015
1016	prev = doc->children;
1017	prev->prev = (xmlNodePtr) cur;
1018	cur->next = prev;
1019	doc->children = (xmlNodePtr) cur;
1020	} else {
1021	xmlNodePtr next;
1022
1023	next = doc->children;
1024	while ((next != NULL) && (next->type != XML_ELEMENT_NODE))
1025	next = next->next;
1026	if (next == NULL) {
1027	cur->prev = doc->last;
1028	cur->prev->next = (xmlNodePtr) cur;
1029	cur->next = NULL;
1030	doc->last = (xmlNodePtr) cur;
1031	} else {
1032	cur->next = next;
1033	cur->prev = next->prev;
1034	if (cur->prev == NULL)
1035	doc->children = (xmlNodePtr) cur;
1036	else
1037	cur->prev->next = (xmlNodePtr) cur;
1038	next->prev = (xmlNodePtr) cur;
1039	}
1040	}
1041	}
1042	}
1043
1044	if ((__xmlRegisterCallbacks) && (xmlRegisterNodeDefaultValue))
1045	xmlRegisterNodeDefaultValue((xmlNodePtr)cur);
1046	return(cur);
1047	}
1048
1049	/**
1050	* DICT_FREE:
1051	* @str: a string
1052	*
1053	* Free a string if it is not owned by the "dict" dictionary in the
1054	* current scope
1055	*/
1056	#define DICT_FREE(str) \
1057	if ((str) && ((!dict) \|\| \
1058	(xmlDictOwns(dict, (const xmlChar *)(str)) == 0))) \
1059	xmlFree((char *)(str));
1060
1061
1062	/**
1063	* DICT_COPY:
1064	* @str: a string
1065	*
1066	* Copy a string using a "dict" dictionary in the current scope,
1067	* if available.
1068	*/
1069	#define DICT_COPY(str, cpy) \
1070	if (str) { \
1071	if (dict) { \
1072	if (xmlDictOwns(dict, (const xmlChar *)(str))) \
1073	cpy = (xmlChar *) (str); \
1074	else \
1075	cpy = (xmlChar ) xmlDictLookup((dict), (const xmlChar )(str), -1); \
1076	} else \
1077	cpy = xmlStrdup((const xmlChar *)(str)); }
1078
1079	/**
1080	* DICT_CONST_COPY:
1081	* @str: a string
1082	*
1083	* Copy a string using a "dict" dictionary in the current scope,
1084	* if available.
1085	*/
1086	#define DICT_CONST_COPY(str, cpy) \
1087	if (str) { \
1088	if (dict) { \
1089	if (xmlDictOwns(dict, (const xmlChar *)(str))) \
1090	cpy = (const xmlChar *) (str); \
1091	else \
1092	cpy = xmlDictLookup((dict), (const xmlChar *)(str), -1); \
1093	} else \
1094	cpy = (const xmlChar ) xmlStrdup((const xmlChar )(str)); }
1095
1096
1097	/**
1098	* xmlFreeDtd:
1099	* @cur: the DTD structure to free up
1100	*
1101	* Free a DTD structure.
1102	*/
1103	void
1104	xmlFreeDtd(xmlDtdPtr cur) {
1105	xmlDictPtr dict = NULL;
1106
1107	if (cur == NULL) {
1108	return;
1109	}
1110	if (cur->doc != NULL) dict = cur->doc->dict;
1111
1112	if ((__xmlRegisterCallbacks) && (xmlDeregisterNodeDefaultValue))
1113	xmlDeregisterNodeDefaultValue((xmlNodePtr)cur);
1114
1115	if (cur->children != NULL) {
1116	xmlNodePtr next, c = cur->children;
1117
1118	/*
1119	* Cleanup all nodes which are not part of the specific lists
1120	* of notations, elements, attributes and entities.
1121	*/
1122	while (c != NULL) {
1123	next = c->next;
1124	if ((c->type != XML_NOTATION_NODE) &&
1125	(c->type != XML_ELEMENT_DECL) &&
1126	(c->type != XML_ATTRIBUTE_DECL) &&
1127	(c->type != XML_ENTITY_DECL)) {
1128	xmlUnlinkNode(c);
1129	xmlFreeNode(c);
1130	}
1131	c = next;
1132	}
1133	}
1134	DICT_FREE(cur->name)
1135	DICT_FREE(cur->SystemID)
1136	DICT_FREE(cur->ExternalID)
1137	/* TODO !!! */
1138	if (cur->notations != NULL)
1139	xmlFreeNotationTable((xmlNotationTablePtr) cur->notations);
1140
1141	if (cur->elements != NULL)
1142	xmlFreeElementTable((xmlElementTablePtr) cur->elements);
1143	if (cur->attributes != NULL)
1144	xmlFreeAttributeTable((xmlAttributeTablePtr) cur->attributes);
1145	if (cur->entities != NULL)
1146	xmlFreeEntitiesTable((xmlEntitiesTablePtr) cur->entities);
1147	if (cur->pentities != NULL)
1148	xmlFreeEntitiesTable((xmlEntitiesTablePtr) cur->pentities);
1149
1150	xmlFree(cur);
1151	}
1152
1153	/**
1154	* xmlNewDoc:
1155	* @version: xmlChar string giving the version of XML "1.0"
1156	*
1157	* Creates a new XML document
1158	*
1159	* Returns a new document
1160	*/
1161	xmlDocPtr
1162	xmlNewDoc(const xmlChar *version) {
1163	xmlDocPtr cur;
1164
1165	if (version == NULL)
1166	version = (const xmlChar *) "1.0";
1167
1168	/*
1169	* Allocate a new document and fill the fields.
1170	*/
1171	cur = (xmlDocPtr) xmlMalloc(sizeof(xmlDoc));
1172	if (cur == NULL) {
1173	xmlTreeErrMemory("building doc");
1174	return(NULL);
1175	}
1176	memset(cur, 0, sizeof(xmlDoc));
1177	cur->type = XML_DOCUMENT_NODE;
1178
1179	cur->version = xmlStrdup(version);
1180	if (cur->version == NULL) {
1181	xmlTreeErrMemory("building doc");
1182	xmlFree(cur);
1183	return(NULL);
1184	}
1185	cur->standalone = -1;
1186	cur->compression = -1; /* not initialized */
1187	cur->doc = cur;
1188	cur->parseFlags = 0;
1189	cur->properties = XML_DOC_USERBUILT;
1190	/*
1191	* The in memory encoding is always UTF8
1192	* This field will never change and would
1193	* be obsolete if not for binary compatibility.
1194	*/
1195	cur->charset = XML_CHAR_ENCODING_UTF8;
1196
1197	if ((__xmlRegisterCallbacks) && (xmlRegisterNodeDefaultValue))
1198	xmlRegisterNodeDefaultValue((xmlNodePtr)cur);
1199	return(cur);
1200	}
1201
1202	/**
1203	* xmlFreeDoc:
1204	* @cur: pointer to the document
1205	*
1206	* Free up all the structures used by a document, tree included.
1207	*/
1208	void
1209	xmlFreeDoc(xmlDocPtr cur) {
1210	xmlDtdPtr extSubset, intSubset;
1211	xmlDictPtr dict = NULL;
1212
1213	if (cur == NULL) {
1214	#ifdef DEBUG_TREE
1215	xmlGenericError(xmlGenericErrorContext,
1216	"xmlFreeDoc : document == NULL\n");
1217	#endif
1218	return;
1219	}
1220	#ifdef LIBXML_DEBUG_RUNTIME
1221	#ifdef LIBXML_DEBUG_ENABLED
1222	xmlDebugCheckDocument(stderr, cur);
1223	#endif
1224	#endif
1225
1226	if (cur != NULL) dict = cur->dict;
1227
1228	if ((__xmlRegisterCallbacks) && (xmlDeregisterNodeDefaultValue))
1229	xmlDeregisterNodeDefaultValue((xmlNodePtr)cur);
1230
1231	/*
1232	* Do this before freeing the children list to avoid ID lookups
1233	*/
1234	if (cur->ids != NULL) xmlFreeIDTable((xmlIDTablePtr) cur->ids);
1235	cur->ids = NULL;
1236	if (cur->refs != NULL) xmlFreeRefTable((xmlRefTablePtr) cur->refs);
1237	cur->refs = NULL;
1238	extSubset = cur->extSubset;
1239	intSubset = cur->intSubset;
1240	if (intSubset == extSubset)
1241	extSubset = NULL;
1242	if (extSubset != NULL) {
1243	xmlUnlinkNode((xmlNodePtr) cur->extSubset);
1244	cur->extSubset = NULL;
1245	xmlFreeDtd(extSubset);
1246	}
1247	if (intSubset != NULL) {
1248	xmlUnlinkNode((xmlNodePtr) cur->intSubset);
1249	cur->intSubset = NULL;
1250	xmlFreeDtd(intSubset);
1251	}
1252
1253	if (cur->children != NULL) xmlFreeNodeList(cur->children);
1254	if (cur->oldNs != NULL) xmlFreeNsList(cur->oldNs);
1255
1256	DICT_FREE(cur->version)
1257	DICT_FREE(cur->name)
1258	DICT_FREE(cur->encoding)
1259	DICT_FREE(cur->URL)
1260	xmlFree(cur);
1261	if (dict) xmlDictFree(dict);
1262	}
1263
1264	/**
1265	* xmlStringLenGetNodeList:
1266	* @doc: the document
1267	* @value: the value of the text
1268	* @len: the length of the string value
1269	*
1270	* Parse the value string and build the node list associated. Should
1271	* produce a flat tree with only TEXTs and ENTITY_REFs.
1272	* Returns a pointer to the first child
1273	*/
1274	xmlNodePtr
1275	xmlStringLenGetNodeList(const xmlDoc doc, const xmlChar value, int len) {
1276	xmlNodePtr ret = NULL, last = NULL;
1277	xmlNodePtr node;
1278	xmlChar *val;
1279	const xmlChar cur, end;
1280	const xmlChar *q;
1281	xmlEntityPtr ent;
1282	xmlBufPtr buf;
1283
1284	if (value == NULL) return(NULL);
1285	cur = value;
1286	end = cur + len;
1287
1288	buf = xmlBufCreateSize(0);
1289	if (buf == NULL) return(NULL);
1290	xmlBufSetAllocationScheme(buf, XML_BUFFER_ALLOC_HYBRID);
1291
1292	q = cur;
1293	while ((cur < end) && (*cur != 0)) {
1294	if (cur[0] == '&') {
1295	int charval = 0;
1296	xmlChar tmp;
1297
1298	/*
1299	* Save the current text.
1300	*/
1301	if (cur != q) {
1302	if (xmlBufAdd(buf, q, cur - q))
1303	goto out;
1304	}
1305	q = cur;
1306	if ((cur + 2 < end) && (cur[1] == '#') && (cur[2] == 'x')) {
1307	cur += 3;
1308	if (cur < end)
1309	tmp = *cur;
1310	else
1311	tmp = 0;
1312	while (tmp != ';') { /* Non input consuming loop */
1313	/*
1314	* If you find an integer overflow here when fuzzing,
1315	* the bug is probably elsewhere. This function should
1316	* only receive entities that were already validated by
1317	* the parser, typically by xmlParseAttValueComplex
1318	* calling xmlStringDecodeEntities.
1319	*
1320	* So it's better not to check for overflow to
1321	* potentially discover new bugs.
1322	*/
1323	if ((tmp >= '0') && (tmp <= '9'))
1324	charval = charval * 16 + (tmp - '0');
1325	else if ((tmp >= 'a') && (tmp <= 'f'))
1326	charval = charval * 16 + (tmp - 'a') + 10;
1327	else if ((tmp >= 'A') && (tmp <= 'F'))
1328	charval = charval * 16 + (tmp - 'A') + 10;
1329	else {
1330	xmlTreeErr(XML_TREE_INVALID_HEX, (xmlNodePtr) doc,
1331	NULL);
1332	charval = 0;
1333	break;
1334	}
1335	cur++;
1336	if (cur < end)
1337	tmp = *cur;
1338	else
1339	tmp = 0;
1340	}
1341	if (tmp == ';')
1342	cur++;
1343	q = cur;
1344	} else if ((cur + 1 < end) && (cur[1] == '#')) {
1345	cur += 2;
1346	if (cur < end)
1347	tmp = *cur;
1348	else
1349	tmp = 0;
1350	while (tmp != ';') { /* Non input consuming loops */
1351	/* Don't check for integer overflow, see above. */
1352	if ((tmp >= '0') && (tmp <= '9'))
1353	charval = charval * 10 + (tmp - '0');
1354	else {
1355	xmlTreeErr(XML_TREE_INVALID_DEC, (xmlNodePtr) doc,
1356	NULL);
1357	charval = 0;
1358	break;
1359	}
1360	cur++;
1361	if (cur < end)
1362	tmp = *cur;
1363	else
1364	tmp = 0;
1365	}
1366	if (tmp == ';')
1367	cur++;
1368	q = cur;
1369	} else {
1370	/*
1371	* Read the entity string
1372	*/
1373	cur++;
1374	q = cur;
1375	while ((cur < end) && (cur != 0) && (cur != ';')) cur++;
1376	if ((cur >= end) \|\| (*cur == 0)) {
1377	xmlTreeErr(XML_TREE_UNTERMINATED_ENTITY, (xmlNodePtr) doc,
1378	(const char *) q);
1379	goto out;
1380	}
1381	if (cur != q) {
1382	/*
1383	* Predefined entities don't generate nodes
1384	*/
1385	val = xmlStrndup(q, cur - q);
1386	ent = xmlGetDocEntity(doc, val);
1387	if ((ent != NULL) &&
1388	(ent->etype == XML_INTERNAL_PREDEFINED_ENTITY)) {
1389
1390	if (xmlBufCat(buf, ent->content))
1391	goto out;
1392
1393	} else {
1394	/*
1395	* Flush buffer so far
1396	*/
1397	if (!xmlBufIsEmpty(buf)) {
1398	node = xmlNewDocText(doc, NULL);
1399	if (node == NULL) {
1400	if (val != NULL) xmlFree(val);
1401	goto out;
1402	}
1403	node->content = xmlBufDetach(buf);
1404
1405	if (last == NULL) {
1406	last = ret = node;
1407	} else {
1408	last = xmlAddNextSibling(last, node);
1409	}
1410	}
1411
1412	/*
1413	* Create a new REFERENCE_REF node
1414	*/
1415	node = xmlNewReference(doc, val);
1416	if (node == NULL) {
1417	if (val != NULL) xmlFree(val);
1418	goto out;
1419	}
1420	else if ((ent != NULL) && (ent->children == NULL)) {
1421	xmlNodePtr temp;
1422
1423	/* Set to non-NULL value to avoid recursion. */
1424	ent->children = (xmlNodePtr) -1;
1425	ent->children = xmlStringGetNodeList(doc,
1426	(const xmlChar*)node->content);
1427	ent->owner = 1;
1428	temp = ent->children;
1429	while (temp) {
1430	temp->parent = (xmlNodePtr)ent;
1431	ent->last = temp;
1432	temp = temp->next;
1433	}
1434	}
1435	if (last == NULL) {
1436	last = ret = node;
1437	} else {
1438	last = xmlAddNextSibling(last, node);
1439	}
1440	}
1441	xmlFree(val);
1442	}
1443	cur++;
1444	q = cur;
1445	}
1446	if (charval != 0) {
1447	xmlChar buffer[10];
1448	int l;
1449
1450	l = xmlCopyCharMultiByte(buffer, charval);
1451	buffer[l] = 0;
1452
1453	if (xmlBufCat(buf, buffer))
1454	goto out;
1455	charval = 0;
1456	}
1457	} else
1458	cur++;
1459	}
1460
1461	if (cur != q) {
1462	/*
1463	* Handle the last piece of text.
1464	*/
1465	if (xmlBufAdd(buf, q, cur - q))
1466	goto out;
1467	}
1468
1469	if (!xmlBufIsEmpty(buf)) {
1470	node = xmlNewDocText(doc, NULL);
1471	if (node == NULL) goto out;
1472	node->content = xmlBufDetach(buf);
1473
1474	if (last == NULL) {
1475	ret = node;
1476	} else {
1477	xmlAddNextSibling(last, node);
1478	}
1479	} else if (ret == NULL) {
1480	ret = xmlNewDocText(doc, BAD_CAST "");
1481	}
1482
1483	out:
1484	xmlBufFree(buf);
1485	return(ret);
1486	}
1487
1488	/**
1489	* xmlStringGetNodeList:
1490	* @doc: the document
1491	* @value: the value of the attribute
1492	*
1493	* Parse the value string and build the node list associated. Should
1494	* produce a flat tree with only TEXTs and ENTITY_REFs.
1495	* Returns a pointer to the first child
1496	*/
1497	xmlNodePtr
1498	xmlStringGetNodeList(const xmlDoc doc, const xmlChar value) {
1499	xmlNodePtr ret = NULL, last = NULL;
1500	xmlNodePtr node;
1501	xmlChar *val;
1502	const xmlChar *cur = value;
1503	const xmlChar *q;
1504	xmlEntityPtr ent;
1505	xmlBufPtr buf;
1506
1507	if (value == NULL) return(NULL);
1508
1509	buf = xmlBufCreateSize(0);
1510	if (buf == NULL) return(NULL);
1511	xmlBufSetAllocationScheme(buf, XML_BUFFER_ALLOC_HYBRID);
1512
1513	q = cur;
1514	while (*cur != 0) {
1515	if (cur[0] == '&') {
1516	int charval = 0;
1517	xmlChar tmp;
1518
1519	/*
1520	* Save the current text.
1521	*/
1522	if (cur != q) {
1523	if (xmlBufAdd(buf, q, cur - q))
1524	goto out;
1525	}
1526	q = cur;
1527	if ((cur[1] == '#') && (cur[2] == 'x')) {
1528	cur += 3;
1529	tmp = *cur;
1530	while (tmp != ';') { /* Non input consuming loop */
1531	/* Don't check for integer overflow, see above. */
1532	if ((tmp >= '0') && (tmp <= '9'))
1533	charval = charval * 16 + (tmp - '0');
1534	else if ((tmp >= 'a') && (tmp <= 'f'))
1535	charval = charval * 16 + (tmp - 'a') + 10;
1536	else if ((tmp >= 'A') && (tmp <= 'F'))
1537	charval = charval * 16 + (tmp - 'A') + 10;
1538	else {
1539	xmlTreeErr(XML_TREE_INVALID_HEX, (xmlNodePtr) doc,
1540	NULL);
1541	charval = 0;
1542	break;
1543	}
1544	cur++;
1545	tmp = *cur;
1546	}
1547	if (tmp == ';')
1548	cur++;
1549	q = cur;
1550	} else if (cur[1] == '#') {
1551	cur += 2;
1552	tmp = *cur;
1553	while (tmp != ';') { /* Non input consuming loops */
1554	/* Don't check for integer overflow, see above. */
1555	if ((tmp >= '0') && (tmp <= '9'))
1556	charval = charval * 10 + (tmp - '0');
1557	else {
1558	xmlTreeErr(XML_TREE_INVALID_DEC, (xmlNodePtr) doc,
1559	NULL);
1560	charval = 0;
1561	break;
1562	}
1563	cur++;
1564	tmp = *cur;
1565	}
1566	if (tmp == ';')
1567	cur++;
1568	q = cur;
1569	} else {
1570	/*
1571	* Read the entity string
1572	*/
1573	cur++;
1574	q = cur;
1575	while ((cur != 0) && (cur != ';')) cur++;
1576	if (*cur == 0) {
1577	xmlTreeErr(XML_TREE_UNTERMINATED_ENTITY,
1578	(xmlNodePtr) doc, (const char *) q);
1579	goto out;
1580	}
1581	if (cur != q) {
1582	/*
1583	* Predefined entities don't generate nodes
1584	*/
1585	val = xmlStrndup(q, cur - q);
1586	ent = xmlGetDocEntity(doc, val);
1587	if ((ent != NULL) &&
1588	(ent->etype == XML_INTERNAL_PREDEFINED_ENTITY)) {
1589
1590	if (xmlBufCat(buf, ent->content))
1591	goto out;
1592
1593	} else {
1594	/*
1595	* Flush buffer so far
1596	*/
1597	if (!xmlBufIsEmpty(buf)) {
1598	node = xmlNewDocText(doc, NULL);
1599	if (node == NULL) {
1600	if (val != NULL) xmlFree(val);
1601	goto out;
1602	}
1603	node->content = xmlBufDetach(buf);
1604
1605	if (last == NULL) {
1606	last = ret = node;
1607	} else {
1608	last = xmlAddNextSibling(last, node);
1609	}
1610	}
1611
1612	/*
1613	* Create a new REFERENCE_REF node
1614	*/
1615	node = xmlNewReference(doc, val);
1616	if (node == NULL) {
1617	if (val != NULL) xmlFree(val);
1618	goto out;
1619	}
1620	else if ((ent != NULL) && (ent->children == NULL)) {
1621	xmlNodePtr temp;
1622
1623	/* Set to non-NULL value to avoid recursion. */
1624	ent->children = (xmlNodePtr) -1;
1625	ent->children = xmlStringGetNodeList(doc,
1626	(const xmlChar*)node->content);
1627	ent->owner = 1;
1628	temp = ent->children;
1629	while (temp) {
1630	temp->parent = (xmlNodePtr)ent;
1631	ent->last = temp;
1632	temp = temp->next;
1633	}
1634	}
1635	if (last == NULL) {
1636	last = ret = node;
1637	} else {
1638	last = xmlAddNextSibling(last, node);
1639	}
1640	}
1641	xmlFree(val);
1642	}
1643	cur++;
1644	q = cur;
1645	}
1646	if (charval != 0) {
1647	xmlChar buffer[10];
1648	int len;
1649
1650	len = xmlCopyCharMultiByte(buffer, charval);
1651	buffer[len] = 0;
1652
1653	if (xmlBufCat(buf, buffer))
1654	goto out;
1655	charval = 0;
1656	}
1657	} else
1658	cur++;
1659	}
1660	if ((cur != q) \|\| (ret == NULL)) {
1661	/*
1662	* Handle the last piece of text.
1663	*/
1664	xmlBufAdd(buf, q, cur - q);
1665	}
1666
1667	if (!xmlBufIsEmpty(buf)) {
1668	node = xmlNewDocText(doc, NULL);
1669	if (node == NULL) {
1670	xmlBufFree(buf);
1671	return(NULL);
1672	}
1673	node->content = xmlBufDetach(buf);
1674
1675	if (last == NULL) {
1676	ret = node;
1677	} else {
1678	xmlAddNextSibling(last, node);
1679	}
1680	}
1681
1682	out:
1683	xmlBufFree(buf);
1684	return(ret);
1685	}
1686
1687	/**
1688	* xmlNodeListGetString:
1689	* @doc: the document
1690	* @list: a Node list
1691	* @inLine: should we replace entity contents or show their external form
1692	*
1693	* Build the string equivalent to the text contained in the Node list
1694	* made of TEXTs and ENTITY_REFs
1695	*
1696	* Returns a pointer to the string copy, the caller must free it with xmlFree().
1697	*/
1698	xmlChar *
1699	xmlNodeListGetString(xmlDocPtr doc, const xmlNode *list, int inLine)
1700	{
1701	const xmlNode *node = list;
1702	xmlChar *ret = NULL;
1703	xmlEntityPtr ent;
1704	int attr;
1705
1706	if (list == NULL)
1707	return (NULL);
1708	if ((list->parent != NULL) && (list->parent->type == XML_ATTRIBUTE_NODE))
1709	attr = 1;
1710	else
1711	attr = 0;
1712
1713	while (node != NULL) {
1714	if ((node->type == XML_TEXT_NODE) \|\|
1715	(node->type == XML_CDATA_SECTION_NODE)) {
1716	if (inLine) {
1717	ret = xmlStrcat(ret, node->content);
1718	} else {
1719	xmlChar *buffer;
1720
1721	if (attr)
1722	buffer = xmlEncodeAttributeEntities(doc, node->content);
1723	else
1724	buffer = xmlEncodeEntitiesReentrant(doc, node->content);
1725	if (buffer != NULL) {
1726	ret = xmlStrcat(ret, buffer);
1727	xmlFree(buffer);
1728	}
1729	}
1730	} else if (node->type == XML_ENTITY_REF_NODE) {
1731	if (inLine) {
1732	ent = xmlGetDocEntity(doc, node->name);
1733	if (ent != NULL) {
1734	xmlChar *buffer;
1735
1736	/* an entity content can be any "well balanced chunk",
1737	* i.e. the result of the content [43] production:
1738	* http://www.w3.org/TR/REC-xml#NT-content.
1739	* So it can contain text, CDATA section or nested
1740	* entity reference nodes (among others).
1741	* -> we recursive call xmlNodeListGetString()
1742	* which handles these types */
1743	buffer = xmlNodeListGetString(doc, ent->children, 1);
1744	if (buffer != NULL) {
1745	ret = xmlStrcat(ret, buffer);
1746	xmlFree(buffer);
1747	}
1748	} else {
1749	ret = xmlStrcat(ret, node->content);
1750	}
1751	} else {
1752	xmlChar buf[2];
1753
1754	buf[0] = '&';
1755	buf[1] = 0;
1756	ret = xmlStrncat(ret, buf, 1);
1757	ret = xmlStrcat(ret, node->name);
1758	buf[0] = ';';
1759	buf[1] = 0;
1760	ret = xmlStrncat(ret, buf, 1);
1761	}
1762	}
1763	#if 0
1764	else {
1765	xmlGenericError(xmlGenericErrorContext,
1766	"xmlGetNodeListString : invalid node type %d\n",
1767	node->type);
1768	}
1769	#endif
1770	node = node->next;
1771	}
1772	return (ret);
1773	}
1774
1775	#ifdef LIBXML_TREE_ENABLED
1776	/**
1777	* xmlNodeListGetRawString:
1778	* @doc: the document
1779	* @list: a Node list
1780	* @inLine: should we replace entity contents or show their external form
1781	*
1782	* Builds the string equivalent to the text contained in the Node list
1783	* made of TEXTs and ENTITY_REFs, contrary to xmlNodeListGetString()
1784	* this function doesn't do any character encoding handling.
1785	*
1786	* Returns a pointer to the string copy, the caller must free it with xmlFree().
1787	*/
1788	xmlChar *
1789	xmlNodeListGetRawString(const xmlDoc doc, const xmlNode list, int inLine)
1790	{
1791	const xmlNode *node = list;
1792	xmlChar *ret = NULL;
1793	xmlEntityPtr ent;
1794
1795	if (list == NULL)
1796	return (NULL);
1797
1798	while (node != NULL) {
1799	if ((node->type == XML_TEXT_NODE) \|\|
1800	(node->type == XML_CDATA_SECTION_NODE)) {
1801	if (inLine) {
1802	ret = xmlStrcat(ret, node->content);
1803	} else {
1804	xmlChar *buffer;
1805
1806	buffer = xmlEncodeSpecialChars(doc, node->content);
1807	if (buffer != NULL) {
1808	ret = xmlStrcat(ret, buffer);
1809	xmlFree(buffer);
1810	}
1811	}
1812	} else if (node->type == XML_ENTITY_REF_NODE) {
1813	if (inLine) {
1814	ent = xmlGetDocEntity(doc, node->name);
1815	if (ent != NULL) {
1816	xmlChar *buffer;
1817
1818	/* an entity content can be any "well balanced chunk",
1819	* i.e. the result of the content [43] production:
1820	* http://www.w3.org/TR/REC-xml#NT-content.
1821	* So it can contain text, CDATA section or nested
1822	* entity reference nodes (among others).
1823	* -> we recursive call xmlNodeListGetRawString()
1824	* which handles these types */
1825	buffer =
1826	xmlNodeListGetRawString(doc, ent->children, 1);
1827	if (buffer != NULL) {
1828	ret = xmlStrcat(ret, buffer);
1829	xmlFree(buffer);
1830	}
1831	} else {
1832	ret = xmlStrcat(ret, node->content);
1833	}
1834	} else {
1835	xmlChar buf[2];
1836
1837	buf[0] = '&';
1838	buf[1] = 0;
1839	ret = xmlStrncat(ret, buf, 1);
1840	ret = xmlStrcat(ret, node->name);
1841	buf[0] = ';';
1842	buf[1] = 0;
1843	ret = xmlStrncat(ret, buf, 1);
1844	}
1845	}
1846	#if 0
1847	else {
1848	xmlGenericError(xmlGenericErrorContext,
1849	"xmlGetNodeListString : invalid node type %d\n",
1850	node->type);
1851	}
1852	#endif
1853	node = node->next;
1854	}
1855	return (ret);
1856	}
1857	#endif /* LIBXML_TREE_ENABLED */
1858
1859	static xmlAttrPtr
1860	xmlNewPropInternal(xmlNodePtr node, xmlNsPtr ns,
1861	const xmlChar * name, const xmlChar * value,
1862	int eatname)
1863	{
1864	xmlAttrPtr cur;
1865	xmlDocPtr doc = NULL;
1866
1867	if ((node != NULL) && (node->type != XML_ELEMENT_NODE)) {
1868	if ((eatname == 1) &&
1869	((node->doc == NULL) \|\|
1870	(!(xmlDictOwns(node->doc->dict, name)))))
1871	xmlFree((xmlChar *) name);
1872	return (NULL);
1873	}
1874
1875	/*
1876	* Allocate a new property and fill the fields.
1877	*/
1878	cur = (xmlAttrPtr) xmlMalloc(sizeof(xmlAttr));
1879	if (cur == NULL) {
1880	if ((eatname == 1) &&
1881	((node == NULL) \|\| (node->doc == NULL) \|\|
1882	(!(xmlDictOwns(node->doc->dict, name)))))
1883	xmlFree((xmlChar *) name);
1884	xmlTreeErrMemory("building attribute");
1885	return (NULL);
1886	}
1887	memset(cur, 0, sizeof(xmlAttr));
1888	cur->type = XML_ATTRIBUTE_NODE;
1889
1890	cur->parent = node;
1891	if (node != NULL) {
1892	doc = node->doc;
1893	cur->doc = doc;
1894	}
1895	cur->ns = ns;
1896
1897	if (eatname == 0) {
1898	if ((doc != NULL) && (doc->dict != NULL))
1899	cur->name = (xmlChar *) xmlDictLookup(doc->dict, name, -1);
1900	else
1901	cur->name = xmlStrdup(name);
1902	} else
1903	cur->name = name;
1904
1905	if (value != NULL) {
1906	xmlNodePtr tmp;
1907
1908	cur->children = xmlNewDocText(doc, value);
1909	cur->last = NULL;
1910	tmp = cur->children;
1911	while (tmp != NULL) {
1912	tmp->parent = (xmlNodePtr) cur;
1913	if (tmp->next == NULL)
1914	cur->last = tmp;
1915	tmp = tmp->next;
1916	}
1917	}
1918
1919	/*
1920	* Add it at the end to preserve parsing order ...
1921	*/
1922	if (node != NULL) {
1923	if (node->properties == NULL) {
1924	node->properties = cur;
1925	} else {
1926	xmlAttrPtr prev = node->properties;
1927
1928	while (prev->next != NULL)
1929	prev = prev->next;
1930	prev->next = cur;
1931	cur->prev = prev;
1932	}
1933	}
1934
1935	if ((value != NULL) && (node != NULL) &&
1936	(xmlIsID(node->doc, node, cur) == 1))
1937	xmlAddID(NULL, node->doc, value, cur);
1938
1939	if ((__xmlRegisterCallbacks) && (xmlRegisterNodeDefaultValue))
1940	xmlRegisterNodeDefaultValue((xmlNodePtr) cur);
1941	return (cur);
1942	}
1943
1944	#if defined(LIBXML_TREE_ENABLED) \|\| defined(LIBXML_HTML_ENABLED) \|\| \
1945	defined(LIBXML_SCHEMAS_ENABLED)
1946	/**
1947	* xmlNewProp:
1948	* @node: the holding node
1949	* @name: the name of the attribute
1950	* @value: the value of the attribute
1951	*
1952	* Create a new property carried by a node.
1953	* Returns a pointer to the attribute
1954	*/
1955	xmlAttrPtr
1956	xmlNewProp(xmlNodePtr node, const xmlChar name, const xmlChar value) {
1957
1958	if (name == NULL) {
1959	#ifdef DEBUG_TREE
1960	xmlGenericError(xmlGenericErrorContext,
1961	"xmlNewProp : name == NULL\n");
1962	#endif
1963	return(NULL);
1964	}
1965
1966	return xmlNewPropInternal(node, NULL, name, value, 0);
1967	}
1968	#endif /* LIBXML_TREE_ENABLED */
1969
1970	/**
1971	* xmlNewNsProp:
1972	* @node: the holding node
1973	* @ns: the namespace
1974	* @name: the name of the attribute
1975	* @value: the value of the attribute
1976	*
1977	* Create a new property tagged with a namespace and carried by a node.
1978	* Returns a pointer to the attribute
1979	*/
1980	xmlAttrPtr
1981	xmlNewNsProp(xmlNodePtr node, xmlNsPtr ns, const xmlChar *name,
1982	const xmlChar *value) {
1983
1984	if (name == NULL) {
1985	#ifdef DEBUG_TREE
1986	xmlGenericError(xmlGenericErrorContext,
1987	"xmlNewNsProp : name == NULL\n");
1988	#endif
1989	return(NULL);
1990	}
1991
1992	return xmlNewPropInternal(node, ns, name, value, 0);
1993	}
1994
1995	/**
1996	* xmlNewNsPropEatName:
1997	* @node: the holding node
1998	* @ns: the namespace
1999	* @name: the name of the attribute
2000	* @value: the value of the attribute
2001	*
2002	* Create a new property tagged with a namespace and carried by a node.
2003	* Returns a pointer to the attribute
2004	*/
2005	xmlAttrPtr
2006	xmlNewNsPropEatName(xmlNodePtr node, xmlNsPtr ns, xmlChar *name,
2007	const xmlChar *value) {
2008
2009	if (name == NULL) {
2010	#ifdef DEBUG_TREE
2011	xmlGenericError(xmlGenericErrorContext,
2012	"xmlNewNsPropEatName : name == NULL\n");
2013	#endif
2014	return(NULL);
2015	}
2016
2017	return xmlNewPropInternal(node, ns, name, value, 1);
2018	}
2019
2020	/**
2021	* xmlNewDocProp:
2022	* @doc: the document
2023	* @name: the name of the attribute
2024	* @value: the value of the attribute
2025	*
2026	* Create a new property carried by a document.
2027	* NOTE: @value is supposed to be a piece of XML CDATA, so it allows entity
2028	* references, but XML special chars need to be escaped first by using
2029	* xmlEncodeEntitiesReentrant(). Use xmlNewProp() if you don't need
2030	* entities support.
2031	*
2032	* Returns a pointer to the attribute
2033	*/
2034	xmlAttrPtr
2035	xmlNewDocProp(xmlDocPtr doc, const xmlChar name, const xmlChar value) {
2036	xmlAttrPtr cur;
2037
2038	if (name == NULL) {
2039	#ifdef DEBUG_TREE
2040	xmlGenericError(xmlGenericErrorContext,
2041	"xmlNewDocProp : name == NULL\n");
2042	#endif
2043	return(NULL);
2044	}
2045
2046	/*
2047	* Allocate a new property and fill the fields.
2048	*/
2049	cur = (xmlAttrPtr) xmlMalloc(sizeof(xmlAttr));
2050	if (cur == NULL) {
2051	xmlTreeErrMemory("building attribute");
2052	return(NULL);
2053	}
2054	memset(cur, 0, sizeof(xmlAttr));
2055	cur->type = XML_ATTRIBUTE_NODE;
2056
2057	if ((doc != NULL) && (doc->dict != NULL))
2058	cur->name = xmlDictLookup(doc->dict, name, -1);
2059	else
2060	cur->name = xmlStrdup(name);
2061	cur->doc = doc;
2062	if (value != NULL) {
2063	xmlNodePtr tmp;
2064
2065	cur->children = xmlStringGetNodeList(doc, value);
2066	cur->last = NULL;
2067
2068	tmp = cur->children;
2069	while (tmp != NULL) {
2070	tmp->parent = (xmlNodePtr) cur;
2071	if (tmp->next == NULL)
2072	cur->last = tmp;
2073	tmp = tmp->next;
2074	}
2075	}
2076
2077	if ((__xmlRegisterCallbacks) && (xmlRegisterNodeDefaultValue))
2078	xmlRegisterNodeDefaultValue((xmlNodePtr)cur);
2079	return(cur);
2080	}
2081
2082	/**
2083	* xmlFreePropList:
2084	* @cur: the first property in the list
2085	*
2086	* Free a property and all its siblings, all the children are freed too.
2087	*/
2088	void
2089	xmlFreePropList(xmlAttrPtr cur) {
2090	xmlAttrPtr next;
2091	if (cur == NULL) return;
2092	while (cur != NULL) {
2093	next = cur->next;
2094	xmlFreeProp(cur);
2095	cur = next;
2096	}
2097	}
2098
2099	/**
2100	* xmlFreeProp:
2101	* @cur: an attribute
2102	*
2103	* Free one attribute, all the content is freed too
2104	*/
2105	void
2106	xmlFreeProp(xmlAttrPtr cur) {
2107	xmlDictPtr dict = NULL;
2108	if (cur == NULL) return;
2109
2110	if (cur->doc != NULL) dict = cur->doc->dict;
2111
2112	if ((__xmlRegisterCallbacks) && (xmlDeregisterNodeDefaultValue))
2113	xmlDeregisterNodeDefaultValue((xmlNodePtr)cur);
2114
2115	/* Check for ID removal -> leading to invalid references ! */
2116	if ((cur->doc != NULL) && (cur->atype == XML_ATTRIBUTE_ID)) {
2117	xmlRemoveID(cur->doc, cur);
2118	}
2119	if (cur->children != NULL) xmlFreeNodeList(cur->children);
2120	DICT_FREE(cur->name)
2121	xmlFree(cur);
2122	}
2123
2124	/**
2125	* xmlRemoveProp:
2126	* @cur: an attribute
2127	*
2128	* Unlink and free one attribute, all the content is freed too
2129	* Note this doesn't work for namespace definition attributes
2130	*
2131	* Returns 0 if success and -1 in case of error.
2132	*/
2133	int
2134	xmlRemoveProp(xmlAttrPtr cur) {
2135	xmlAttrPtr tmp;
2136	if (cur == NULL) {
2137	#ifdef DEBUG_TREE
2138	xmlGenericError(xmlGenericErrorContext,
2139	"xmlRemoveProp : cur == NULL\n");
2140	#endif
2141	return(-1);
2142	}
2143	if (cur->parent == NULL) {
2144	#ifdef DEBUG_TREE
2145	xmlGenericError(xmlGenericErrorContext,
2146	"xmlRemoveProp : cur->parent == NULL\n");
2147	#endif
2148	return(-1);
2149	}
2150	tmp = cur->parent->properties;
2151	if (tmp == cur) {
2152	cur->parent->properties = cur->next;
2153	if (cur->next != NULL)
2154	cur->next->prev = NULL;
2155	xmlFreeProp(cur);
2156	return(0);
2157	}
2158	while (tmp != NULL) {
2159	if (tmp->next == cur) {
2160	tmp->next = cur->next;
2161	if (tmp->next != NULL)
2162	tmp->next->prev = tmp;
2163	xmlFreeProp(cur);
2164	return(0);
2165	}
2166	tmp = tmp->next;
2167	}
2168	#ifdef DEBUG_TREE
2169	xmlGenericError(xmlGenericErrorContext,
2170	"xmlRemoveProp : attribute not owned by its node\n");
2171	#endif
2172	return(-1);
2173	}
2174
2175	/**
2176	* xmlNewDocPI:
2177	* @doc: the target document
2178	* @name: the processing instruction name
2179	* @content: the PI content
2180	*
2181	* Creation of a processing instruction element.
2182	* Returns a pointer to the new node object.
2183	*/
2184	xmlNodePtr
2185	xmlNewDocPI(xmlDocPtr doc, const xmlChar name, const xmlChar content) {
2186	xmlNodePtr cur;
2187
2188	if (name == NULL) {
2189	#ifdef DEBUG_TREE
2190	xmlGenericError(xmlGenericErrorContext,
2191	"xmlNewPI : name == NULL\n");
2192	#endif
2193	return(NULL);
2194	}
2195
2196	/*
2197	* Allocate a new node and fill the fields.
2198	*/
2199	cur = (xmlNodePtr) xmlMalloc(sizeof(xmlNode));
2200	if (cur == NULL) {
2201	xmlTreeErrMemory("building PI");
2202	return(NULL);
2203	}
2204	memset(cur, 0, sizeof(xmlNode));
2205	cur->type = XML_PI_NODE;
2206
2207	if ((doc != NULL) && (doc->dict != NULL))
2208	cur->name = xmlDictLookup(doc->dict, name, -1);
2209	else
2210	cur->name = xmlStrdup(name);
2211	if (content != NULL) {
2212	cur->content = xmlStrdup(content);
2213	}
2214	cur->doc = doc;
2215
2216	if ((__xmlRegisterCallbacks) && (xmlRegisterNodeDefaultValue))
2217	xmlRegisterNodeDefaultValue((xmlNodePtr)cur);
2218	return(cur);
2219	}
2220
2221	/**
2222	* xmlNewPI:
2223	* @name: the processing instruction name
2224	* @content: the PI content
2225	*
2226	* Creation of a processing instruction element.
2227	* Use xmlDocNewPI preferably to get string interning
2228	*
2229	* Returns a pointer to the new node object.
2230	*/
2231	xmlNodePtr
2232	xmlNewPI(const xmlChar name, const xmlChar content) {
2233	return(xmlNewDocPI(NULL, name, content));
2234	}
2235
2236	/**
2237	* xmlNewNode:
2238	* @ns: namespace if any
2239	* @name: the node name
2240	*
2241	* Creation of a new node element. @ns is optional (NULL).
2242	*
2243	* Returns a pointer to the new node object. Uses xmlStrdup() to make
2244	* copy of @name.
2245	*/
2246	xmlNodePtr
2247	xmlNewNode(xmlNsPtr ns, const xmlChar *name) {
2248	xmlNodePtr cur;
2249
2250	if (name == NULL) {
2251	#ifdef DEBUG_TREE
2252	xmlGenericError(xmlGenericErrorContext,
2253	"xmlNewNode : name == NULL\n");
2254	#endif
2255	return(NULL);
2256	}
2257
2258	/*
2259	* Allocate a new node and fill the fields.
2260	*/
2261	cur = (xmlNodePtr) xmlMalloc(sizeof(xmlNode));
2262	if (cur == NULL) {
2263	xmlTreeErrMemory("building node");
2264	return(NULL);
2265	}
2266	memset(cur, 0, sizeof(xmlNode));
2267	cur->type = XML_ELEMENT_NODE;
2268
2269	cur->name = xmlStrdup(name);
2270	cur->ns = ns;
2271
2272	if ((__xmlRegisterCallbacks) && (xmlRegisterNodeDefaultValue))
2273	xmlRegisterNodeDefaultValue(cur);
2274	return(cur);
2275	}
2276
2277	/**
2278	* xmlNewNodeEatName:
2279	* @ns: namespace if any
2280	* @name: the node name
2281	*
2282	* Creation of a new node element. @ns is optional (NULL).
2283	*
2284	* Returns a pointer to the new node object, with pointer @name as
2285	* new node's name. Use xmlNewNode() if a copy of @name string is
2286	* is needed as new node's name.
2287	*/
2288	xmlNodePtr
2289	xmlNewNodeEatName(xmlNsPtr ns, xmlChar *name) {
2290	xmlNodePtr cur;
2291
2292	if (name == NULL) {
2293	#ifdef DEBUG_TREE
2294	xmlGenericError(xmlGenericErrorContext,
2295	"xmlNewNode : name == NULL\n");
2296	#endif
2297	return(NULL);
2298	}
2299
2300	/*
2301	* Allocate a new node and fill the fields.
2302	*/
2303	cur = (xmlNodePtr) xmlMalloc(sizeof(xmlNode));
2304	if (cur == NULL) {
2305	xmlTreeErrMemory("building node");
2306	/* we can't check here that name comes from the doc dictionary */
2307	return(NULL);
2308	}
2309	memset(cur, 0, sizeof(xmlNode));
2310	cur->type = XML_ELEMENT_NODE;
2311
2312	cur->name = name;
2313	cur->ns = ns;
2314
2315	if ((__xmlRegisterCallbacks) && (xmlRegisterNodeDefaultValue))
2316	xmlRegisterNodeDefaultValue((xmlNodePtr)cur);
2317	return(cur);
2318	}
2319
2320	/**
2321	* xmlNewDocNode:
2322	* @doc: the document
2323	* @ns: namespace if any
2324	* @name: the node name
2325	* @content: the XML text content if any
2326	*
2327	* Creation of a new node element within a document. @ns and @content
2328	* are optional (NULL).
2329	* NOTE: @content is supposed to be a piece of XML CDATA, so it allow entities
2330	* references, but XML special chars need to be escaped first by using
2331	* xmlEncodeEntitiesReentrant(). Use xmlNewDocRawNode() if you don't
2332	* need entities support.
2333	*
2334	* Returns a pointer to the new node object.
2335	*/
2336	xmlNodePtr
2337	xmlNewDocNode(xmlDocPtr doc, xmlNsPtr ns,
2338	const xmlChar name, const xmlChar content) {
2339	xmlNodePtr cur;
2340
2341	if ((doc != NULL) && (doc->dict != NULL))
2342	cur = xmlNewNodeEatName(ns, (xmlChar *)
2343	xmlDictLookup(doc->dict, name, -1));
2344	else
2345	cur = xmlNewNode(ns, name);
2346	if (cur != NULL) {
2347	cur->doc = doc;
2348	if (content != NULL) {
2349	cur->children = xmlStringGetNodeList(doc, content);
2350	UPDATE_LAST_CHILD_AND_PARENT(cur)
2351	}
2352	}
2353
2354	return(cur);
2355	}
2356
2357	/**
2358	* xmlNewDocNodeEatName:
2359	* @doc: the document
2360	* @ns: namespace if any
2361	* @name: the node name
2362	* @content: the XML text content if any
2363	*
2364	* Creation of a new node element within a document. @ns and @content
2365	* are optional (NULL).
2366	* NOTE: @content is supposed to be a piece of XML CDATA, so it allow entities
2367	* references, but XML special chars need to be escaped first by using
2368	* xmlEncodeEntitiesReentrant(). Use xmlNewDocRawNode() if you don't
2369	* need entities support.
2370	*
2371	* Returns a pointer to the new node object.
2372	*/
2373	xmlNodePtr
2374	xmlNewDocNodeEatName(xmlDocPtr doc, xmlNsPtr ns,
2375	xmlChar name, const xmlChar content) {
2376	xmlNodePtr cur;
2377
2378	cur = xmlNewNodeEatName(ns, name);
2379	if (cur != NULL) {
2380	cur->doc = doc;
2381	if (content != NULL) {
2382	cur->children = xmlStringGetNodeList(doc, content);
2383	UPDATE_LAST_CHILD_AND_PARENT(cur)
2384	}
2385	} else {
2386	/* if name don't come from the doc dictionary free it here */
2387	if ((name != NULL) && (doc != NULL) &&
2388	(!(xmlDictOwns(doc->dict, name))))
2389	xmlFree(name);
2390	}
2391	return(cur);
2392	}
2393
2394	#ifdef LIBXML_TREE_ENABLED
2395	/**
2396	* xmlNewDocRawNode:
2397	* @doc: the document
2398	* @ns: namespace if any
2399	* @name: the node name
2400	* @content: the text content if any
2401	*
2402	* Creation of a new node element within a document. @ns and @content
2403	* are optional (NULL).
2404	*
2405	* Returns a pointer to the new node object.
2406	*/
2407	xmlNodePtr
2408	xmlNewDocRawNode(xmlDocPtr doc, xmlNsPtr ns,
2409	const xmlChar name, const xmlChar content) {
2410	xmlNodePtr cur;
2411
2412	cur = xmlNewDocNode(doc, ns, name, NULL);
2413	if (cur != NULL) {
2414	cur->doc = doc;
2415	if (content != NULL) {
2416	cur->children = xmlNewDocText(doc, content);
2417	UPDATE_LAST_CHILD_AND_PARENT(cur)
2418	}
2419	}
2420	return(cur);
2421	}
2422
2423	/**
2424	* xmlNewDocFragment:
2425	* @doc: the document owning the fragment
2426	*
2427	* Creation of a new Fragment node.
2428	* Returns a pointer to the new node object.
2429	*/
2430	xmlNodePtr
2431	xmlNewDocFragment(xmlDocPtr doc) {
2432	xmlNodePtr cur;
2433
2434	/*
2435	* Allocate a new DocumentFragment node and fill the fields.
2436	*/
2437	cur = (xmlNodePtr) xmlMalloc(sizeof(xmlNode));
2438	if (cur == NULL) {
2439	xmlTreeErrMemory("building fragment");
2440	return(NULL);
2441	}
2442	memset(cur, 0, sizeof(xmlNode));
2443	cur->type = XML_DOCUMENT_FRAG_NODE;
2444
2445	cur->doc = doc;
2446
2447	if ((__xmlRegisterCallbacks) && (xmlRegisterNodeDefaultValue))
2448	xmlRegisterNodeDefaultValue(cur);
2449	return(cur);
2450	}
2451	#endif /* LIBXML_TREE_ENABLED */
2452
2453	/**
2454	* xmlNewText:
2455	* @content: the text content
2456	*
2457	* Creation of a new text node.
2458	* Returns a pointer to the new node object.
2459	*/
2460	xmlNodePtr
2461	xmlNewText(const xmlChar *content) {
2462	xmlNodePtr cur;
2463
2464	/*
2465	* Allocate a new node and fill the fields.
2466	*/
2467	cur = (xmlNodePtr) xmlMalloc(sizeof(xmlNode));
2468	if (cur == NULL) {
2469	xmlTreeErrMemory("building text");
2470	return(NULL);
2471	}
2472	memset(cur, 0, sizeof(xmlNode));
2473	cur->type = XML_TEXT_NODE;
2474
2475	cur->name = xmlStringText;
2476	if (content != NULL) {
2477	cur->content = xmlStrdup(content);
2478	}
2479
2480	if ((__xmlRegisterCallbacks) && (xmlRegisterNodeDefaultValue))
2481	xmlRegisterNodeDefaultValue(cur);
2482	return(cur);
2483	}
2484
2485	#ifdef LIBXML_TREE_ENABLED
2486	/**
2487	* xmlNewTextChild:
2488	* @parent: the parent node
2489	* @ns: a namespace if any
2490	* @name: the name of the child
2491	* @content: the text content of the child if any.
2492	*
2493	* Creation of a new child element, added at the end of @parent children list.
2494	* @ns and @content parameters are optional (NULL). If @ns is NULL, the newly
2495	* created element inherits the namespace of @parent. If @content is non NULL,
2496	* a child TEXT node will be created containing the string @content.
2497	* NOTE: Use xmlNewChild() if @content will contain entities that need to be
2498	* preserved. Use this function, xmlNewTextChild(), if you need to ensure that
2499	* reserved XML chars that might appear in @content, such as the ampersand,
2500	* greater-than or less-than signs, are automatically replaced by their XML
2501	* escaped entity representations.
2502	*
2503	* Returns a pointer to the new node object.
2504	*/
2505	xmlNodePtr
2506	xmlNewTextChild(xmlNodePtr parent, xmlNsPtr ns,
2507	const xmlChar name, const xmlChar content) {
2508	xmlNodePtr cur, prev;
2509
2510	if (parent == NULL) {
2511	#ifdef DEBUG_TREE
2512	xmlGenericError(xmlGenericErrorContext,
2513	"xmlNewTextChild : parent == NULL\n");
2514	#endif
2515	return(NULL);
2516	}
2517
2518	if (name == NULL) {
2519	#ifdef DEBUG_TREE
2520	xmlGenericError(xmlGenericErrorContext,
2521	"xmlNewTextChild : name == NULL\n");
2522	#endif
2523	return(NULL);
2524	}
2525
2526	/*
2527	* Allocate a new node
2528	*/
2529	if (parent->type == XML_ELEMENT_NODE) {
2530	if (ns == NULL)
2531	cur = xmlNewDocRawNode(parent->doc, parent->ns, name, content);
2532	else
2533	cur = xmlNewDocRawNode(parent->doc, ns, name, content);
2534	} else if ((parent->type == XML_DOCUMENT_NODE) \|\|
2535	(parent->type == XML_HTML_DOCUMENT_NODE)) {
2536	if (ns == NULL)
2537	cur = xmlNewDocRawNode((xmlDocPtr) parent, NULL, name, content);
2538	else
2539	cur = xmlNewDocRawNode((xmlDocPtr) parent, ns, name, content);
2540	} else if (parent->type == XML_DOCUMENT_FRAG_NODE) {
2541	cur = xmlNewDocRawNode( parent->doc, ns, name, content);
2542	} else {
2543	return(NULL);
2544	}
2545	if (cur == NULL) return(NULL);
2546
2547	/*
2548	* add the new element at the end of the children list.
2549	*/
2550	cur->type = XML_ELEMENT_NODE;
2551	cur->parent = parent;
2552	cur->doc = parent->doc;
2553	if (parent->children == NULL) {
2554	parent->children = cur;
2555	parent->last = cur;
2556	} else {
2557	prev = parent->last;
2558	prev->next = cur;
2559	cur->prev = prev;
2560	parent->last = cur;
2561	}
2562
2563	return(cur);
2564	}
2565	#endif /* LIBXML_TREE_ENABLED */
2566
2567	/**
2568	* xmlNewCharRef:
2569	* @doc: the document
2570	* @name: the char ref string, starting with # or "&# ... ;"
2571	*
2572	* Creation of a new character reference node.
2573	* Returns a pointer to the new node object.
2574	*/
2575	xmlNodePtr
2576	xmlNewCharRef(xmlDocPtr doc, const xmlChar *name) {
2577	xmlNodePtr cur;
2578
2579	if (name == NULL)
2580	return(NULL);
2581
2582	/*
2583	* Allocate a new node and fill the fields.
2584	*/
2585	cur = (xmlNodePtr) xmlMalloc(sizeof(xmlNode));
2586	if (cur == NULL) {
2587	xmlTreeErrMemory("building character reference");
2588	return(NULL);
2589	}
2590	memset(cur, 0, sizeof(xmlNode));
2591	cur->type = XML_ENTITY_REF_NODE;
2592
2593	cur->doc = doc;
2594	if (name[0] == '&') {
2595	int len;
2596	name++;
2597	len = xmlStrlen(name);
2598	if (name[len - 1] == ';')
2599	cur->name = xmlStrndup(name, len - 1);
2600	else
2601	cur->name = xmlStrndup(name, len);
2602	} else
2603	cur->name = xmlStrdup(name);
2604
2605	if ((__xmlRegisterCallbacks) && (xmlRegisterNodeDefaultValue))
2606	xmlRegisterNodeDefaultValue(cur);
2607	return(cur);
2608	}
2609
2610	/**
2611	* xmlNewReference:
2612	* @doc: the document
2613	* @name: the reference name, or the reference string with & and ;
2614	*
2615	* Creation of a new reference node.
2616	* Returns a pointer to the new node object.
2617	*/
2618	xmlNodePtr
2619	xmlNewReference(const xmlDoc doc, const xmlChar name) {
2620	xmlNodePtr cur;
2621	xmlEntityPtr ent;
2622
2623	if (name == NULL)
2624	return(NULL);
2625
2626	/*
2627	* Allocate a new node and fill the fields.
2628	*/
2629	cur = (xmlNodePtr) xmlMalloc(sizeof(xmlNode));
2630	if (cur == NULL) {
2631	xmlTreeErrMemory("building reference");
2632	return(NULL);
2633	}
2634	memset(cur, 0, sizeof(xmlNode));
2635	cur->type = XML_ENTITY_REF_NODE;
2636
2637	cur->doc = (xmlDoc *)doc;
2638	if (name[0] == '&') {
2639	int len;
2640	name++;
2641	len = xmlStrlen(name);
2642	if (name[len - 1] == ';')
2643	cur->name = xmlStrndup(name, len - 1);
2644	else
2645	cur->name = xmlStrndup(name, len);
2646	} else
2647	cur->name = xmlStrdup(name);
2648
2649	ent = xmlGetDocEntity(doc, cur->name);
2650	if (ent != NULL) {
2651	cur->content = ent->content;
2652	/*
2653	* The parent pointer in entity is a DTD pointer and thus is NOT
2654	* updated. Not sure if this is 100% correct.
2655	* -George
2656	*/
2657	cur->children = (xmlNodePtr) ent;
2658	cur->last = (xmlNodePtr) ent;
2659	}
2660
2661	if ((__xmlRegisterCallbacks) && (xmlRegisterNodeDefaultValue))
2662	xmlRegisterNodeDefaultValue(cur);
2663	return(cur);
2664	}
2665
2666	/**
2667	* xmlNewDocText:
2668	* @doc: the document
2669	* @content: the text content
2670	*
2671	* Creation of a new text node within a document.
2672	* Returns a pointer to the new node object.
2673	*/
2674	xmlNodePtr
2675	xmlNewDocText(const xmlDoc doc, const xmlChar content) {
2676	xmlNodePtr cur;
2677
2678	cur = xmlNewText(content);
2679	if (cur != NULL) cur->doc = (xmlDoc *)doc;
2680	return(cur);
2681	}
2682
2683	/**
2684	* xmlNewTextLen:
2685	* @content: the text content
2686	* @len: the text len.
2687	*
2688	* Creation of a new text node with an extra parameter for the content's length
2689	* Returns a pointer to the new node object.
2690	*/
2691	xmlNodePtr
2692	xmlNewTextLen(const xmlChar *content, int len) {
2693	xmlNodePtr cur;
2694
2695	/*
2696	* Allocate a new node and fill the fields.
2697	*/
2698	cur = (xmlNodePtr) xmlMalloc(sizeof(xmlNode));
2699	if (cur == NULL) {
2700	xmlTreeErrMemory("building text");
2701	return(NULL);
2702	}
2703	memset(cur, 0, sizeof(xmlNode));
2704	cur->type = XML_TEXT_NODE;
2705
2706	cur->name = xmlStringText;
2707	if (content != NULL) {
2708	cur->content = xmlStrndup(content, len);
2709	}
2710
2711	if ((__xmlRegisterCallbacks) && (xmlRegisterNodeDefaultValue))
2712	xmlRegisterNodeDefaultValue(cur);
2713	return(cur);
2714	}
2715
2716	/**
2717	* xmlNewDocTextLen:
2718	* @doc: the document
2719	* @content: the text content
2720	* @len: the text len.
2721	*
2722	* Creation of a new text node with an extra content length parameter. The
2723	* text node pertain to a given document.
2724	* Returns a pointer to the new node object.
2725	*/
2726	xmlNodePtr
2727	xmlNewDocTextLen(xmlDocPtr doc, const xmlChar *content, int len) {
2728	xmlNodePtr cur;
2729
2730	cur = xmlNewTextLen(content, len);
2731	if (cur != NULL) cur->doc = doc;
2732	return(cur);
2733	}
2734
2735	/**
2736	* xmlNewComment:
2737	* @content: the comment content
2738	*
2739	* Creation of a new node containing a comment.
2740	* Returns a pointer to the new node object.
2741	*/
2742	xmlNodePtr
2743	xmlNewComment(const xmlChar *content) {
2744	xmlNodePtr cur;
2745
2746	/*
2747	* Allocate a new node and fill the fields.
2748	*/
2749	cur = (xmlNodePtr) xmlMalloc(sizeof(xmlNode));
2750	if (cur == NULL) {
2751	xmlTreeErrMemory("building comment");
2752	return(NULL);
2753	}
2754	memset(cur, 0, sizeof(xmlNode));
2755	cur->type = XML_COMMENT_NODE;
2756
2757	cur->name = xmlStringComment;
2758	if (content != NULL) {
2759	cur->content = xmlStrdup(content);
2760	}
2761
2762	if ((__xmlRegisterCallbacks) && (xmlRegisterNodeDefaultValue))
2763	xmlRegisterNodeDefaultValue(cur);
2764	return(cur);
2765	}
2766
2767	/**
2768	* xmlNewCDataBlock:
2769	* @doc: the document
2770	* @content: the CDATA block content content
2771	* @len: the length of the block
2772	*
2773	* Creation of a new node containing a CDATA block.
2774	* Returns a pointer to the new node object.
2775	*/
2776	xmlNodePtr
2777	xmlNewCDataBlock(xmlDocPtr doc, const xmlChar *content, int len) {
2778	xmlNodePtr cur;
2779
2780	/*
2781	* Allocate a new node and fill the fields.
2782	*/
2783	cur = (xmlNodePtr) xmlMalloc(sizeof(xmlNode));
2784	if (cur == NULL) {
2785	xmlTreeErrMemory("building CDATA");
2786	return(NULL);
2787	}
2788	memset(cur, 0, sizeof(xmlNode));
2789	cur->type = XML_CDATA_SECTION_NODE;
2790	cur->doc = doc;
2791
2792	if (content != NULL) {
2793	cur->content = xmlStrndup(content, len);
2794	}
2795
2796	if ((__xmlRegisterCallbacks) && (xmlRegisterNodeDefaultValue))
2797	xmlRegisterNodeDefaultValue(cur);
2798	return(cur);
2799	}
2800
2801	/**
2802	* xmlNewDocComment:
2803	* @doc: the document
2804	* @content: the comment content
2805	*
2806	* Creation of a new node containing a comment within a document.
2807	* Returns a pointer to the new node object.
2808	*/
2809	xmlNodePtr
2810	xmlNewDocComment(xmlDocPtr doc, const xmlChar *content) {
2811	xmlNodePtr cur;
2812
2813	cur = xmlNewComment(content);
2814	if (cur != NULL) cur->doc = doc;
2815	return(cur);
2816	}
2817
2818	/**
2819	* xmlSetTreeDoc:
2820	* @tree: the top element
2821	* @doc: the document
2822	*
2823	* update all nodes under the tree to point to the right document
2824	*/
2825	void
2826	xmlSetTreeDoc(xmlNodePtr tree, xmlDocPtr doc) {
2827	xmlAttrPtr prop;
2828
2829	if ((tree == NULL) \|\| (tree->type == XML_NAMESPACE_DECL))
2830	return;
2831	if (tree->doc != doc) {
2832	if(tree->type == XML_ELEMENT_NODE) {
2833	prop = tree->properties;
2834	while (prop != NULL) {
2835	if (prop->atype == XML_ATTRIBUTE_ID) {
2836	xmlRemoveID(tree->doc, prop);
2837	}
2838
2839	prop->doc = doc;
2840	xmlSetListDoc(prop->children, doc);
2841
2842	/*
2843	* TODO: ID attributes should be also added to the new
2844	* document, but this breaks things like xmlReplaceNode.
2845	* The underlying problem is that xmlRemoveID is only called
2846	* if a node is destroyed, not if it's unlinked.
2847	*/
2848	#if 0
2849	if (xmlIsID(doc, tree, prop)) {
2850	xmlChar *idVal = xmlNodeListGetString(doc, prop->children,
2851	1);
2852	xmlAddID(NULL, doc, idVal, prop);
2853	}
2854	#endif
2855
2856	prop = prop->next;
2857	}
2858	}
2859	if (tree->type == XML_ENTITY_REF_NODE) {
2860	/*
2861	* Clear 'children' which points to the entity declaration
2862	* from the original document.
2863	*/
2864	tree->children = NULL;
2865	} else if (tree->children != NULL) {
2866	xmlSetListDoc(tree->children, doc);
2867	}
2868	tree->doc = doc;
2869	}
2870	}
2871
2872	/**
2873	* xmlSetListDoc:
2874	* @list: the first element
2875	* @doc: the document
2876	*
2877	* update all nodes in the list to point to the right document
2878	*/
2879	void
2880	xmlSetListDoc(xmlNodePtr list, xmlDocPtr doc) {
2881	xmlNodePtr cur;
2882
2883	if ((list == NULL) \|\| (list->type == XML_NAMESPACE_DECL))
2884	return;
2885	cur = list;
2886	while (cur != NULL) {
2887	if (cur->doc != doc)
2888	xmlSetTreeDoc(cur, doc);
2889	cur = cur->next;
2890	}
2891	}
2892
2893	#if defined(LIBXML_TREE_ENABLED) \|\| defined(LIBXML_SCHEMAS_ENABLED)
2894	/**
2895	* xmlNewChild:
2896	* @parent: the parent node
2897	* @ns: a namespace if any
2898	* @name: the name of the child
2899	* @content: the XML content of the child if any.
2900	*
2901	* Creation of a new child element, added at the end of @parent children list.
2902	* @ns and @content parameters are optional (NULL). If @ns is NULL, the newly
2903	* created element inherits the namespace of @parent. If @content is non NULL,
2904	* a child list containing the TEXTs and ENTITY_REFs node will be created.
2905	* NOTE: @content is supposed to be a piece of XML CDATA, so it allows entity
2906	* references. XML special chars must be escaped first by using
2907	* xmlEncodeEntitiesReentrant(), or xmlNewTextChild() should be used.
2908	*
2909	* Returns a pointer to the new node object.
2910	*/
2911	xmlNodePtr
2912	xmlNewChild(xmlNodePtr parent, xmlNsPtr ns,
2913	const xmlChar name, const xmlChar content) {
2914	xmlNodePtr cur, prev;
2915
2916	if (parent == NULL) {
2917	#ifdef DEBUG_TREE
2918	xmlGenericError(xmlGenericErrorContext,
2919	"xmlNewChild : parent == NULL\n");
2920	#endif
2921	return(NULL);
2922	}
2923
2924	if (name == NULL) {
2925	#ifdef DEBUG_TREE
2926	xmlGenericError(xmlGenericErrorContext,
2927	"xmlNewChild : name == NULL\n");
2928	#endif
2929	return(NULL);
2930	}
2931
2932	/*
2933	* Allocate a new node
2934	*/
2935	if (parent->type == XML_ELEMENT_NODE) {
2936	if (ns == NULL)
2937	cur = xmlNewDocNode(parent->doc, parent->ns, name, content);
2938	else
2939	cur = xmlNewDocNode(parent->doc, ns, name, content);
2940	} else if ((parent->type == XML_DOCUMENT_NODE) \|\|
2941	(parent->type == XML_HTML_DOCUMENT_NODE)) {
2942	if (ns == NULL)
2943	cur = xmlNewDocNode((xmlDocPtr) parent, NULL, name, content);
2944	else
2945	cur = xmlNewDocNode((xmlDocPtr) parent, ns, name, content);
2946	} else if (parent->type == XML_DOCUMENT_FRAG_NODE) {
2947	cur = xmlNewDocNode( parent->doc, ns, name, content);
2948	} else {
2949	return(NULL);
2950	}
2951	if (cur == NULL) return(NULL);
2952
2953	/*
2954	* add the new element at the end of the children list.
2955	*/
2956	cur->type = XML_ELEMENT_NODE;
2957	cur->parent = parent;
2958	cur->doc = parent->doc;
2959	if (parent->children == NULL) {
2960	parent->children = cur;
2961	parent->last = cur;
2962	} else {
2963	prev = parent->last;
2964	prev->next = cur;
2965	cur->prev = prev;
2966	parent->last = cur;
2967	}
2968
2969	return(cur);
2970	}
2971	#endif /* LIBXML_TREE_ENABLED */
2972
2973	/**
2974	* xmlAddPropSibling:
2975	* @prev: the attribute to which @prop is added after
2976	* @cur: the base attribute passed to calling function
2977	* @prop: the new attribute
2978	*
2979	* Add a new attribute after @prev using @cur as base attribute.
2980	* When inserting before @cur, @prev is passed as @cur->prev.
2981	* When inserting after @cur, @prev is passed as @cur.
2982	* If an existing attribute is found it is destroyed prior to adding @prop.
2983	*
2984	* Returns the attribute being inserted or NULL in case of error.
2985	*/
2986	static xmlNodePtr
2987	xmlAddPropSibling(xmlNodePtr prev, xmlNodePtr cur, xmlNodePtr prop) {
2988	xmlAttrPtr attr;
2989
2990	if ((cur == NULL) \|\| (cur->type != XML_ATTRIBUTE_NODE) \|\|
2991	(prop == NULL) \|\| (prop->type != XML_ATTRIBUTE_NODE) \|\|
2992	((prev != NULL) && (prev->type != XML_ATTRIBUTE_NODE)))
2993	return(NULL);
2994
2995	/* check if an attribute with the same name exists */
2996	if (prop->ns == NULL)
2997	attr = xmlHasNsProp(cur->parent, prop->name, NULL);
2998	else
2999	attr = xmlHasNsProp(cur->parent, prop->name, prop->ns->href);
3000
3001	if (prop->doc != cur->doc) {
3002	xmlSetTreeDoc(prop, cur->doc);
3003	}
3004	prop->parent = cur->parent;
3005	prop->prev = prev;
3006	if (prev != NULL) {
3007	prop->next = prev->next;
3008	prev->next = prop;
3009	if (prop->next)
3010	prop->next->prev = prop;
3011	} else {
3012	prop->next = cur;
3013	cur->prev = prop;
3014	}
3015	if (prop->prev == NULL && prop->parent != NULL)
3016	prop->parent->properties = (xmlAttrPtr) prop;
3017	if ((attr != NULL) && (attr->type != XML_ATTRIBUTE_DECL)) {
3018	/* different instance, destroy it (attributes must be unique) */
3019	xmlRemoveProp((xmlAttrPtr) attr);
3020	}
3021	return prop;
3022	}
3023
3024	/**
3025	* xmlAddNextSibling:
3026	* @cur: the child node
3027	* @elem: the new node
3028	*
3029	* Add a new node @elem as the next sibling of @cur
3030	* If the new node was already inserted in a document it is
3031	* first unlinked from its existing context.
3032	* As a result of text merging @elem may be freed.
3033	* If the new node is ATTRIBUTE, it is added into properties instead of children.
3034	* If there is an attribute with equal name, it is first destroyed.
3035	*
3036	* Returns the new node or NULL in case of error.
3037	*/
3038	xmlNodePtr
3039	xmlAddNextSibling(xmlNodePtr cur, xmlNodePtr elem) {
3040	if ((cur == NULL) \|\| (cur->type == XML_NAMESPACE_DECL)) {
3041	#ifdef DEBUG_TREE
3042	xmlGenericError(xmlGenericErrorContext,
3043	"xmlAddNextSibling : cur == NULL\n");
3044	#endif
3045	return(NULL);
3046	}
3047	if ((elem == NULL) \|\| (elem->type == XML_NAMESPACE_DECL)) {
3048	#ifdef DEBUG_TREE
3049	xmlGenericError(xmlGenericErrorContext,
3050	"xmlAddNextSibling : elem == NULL\n");
3051	#endif
3052	return(NULL);
3053	}
3054
3055	if (cur == elem) {
3056	#ifdef DEBUG_TREE
3057	xmlGenericError(xmlGenericErrorContext,
3058	"xmlAddNextSibling : cur == elem\n");
3059	#endif
3060	return(NULL);
3061	}
3062
3063	xmlUnlinkNode(elem);
3064
3065	if (elem->type == XML_TEXT_NODE) {
3066	if (cur->type == XML_TEXT_NODE) {
3067	xmlNodeAddContent(cur, elem->content);
3068	xmlFreeNode(elem);
3069	return(cur);
3070	}
3071	if ((cur->next != NULL) && (cur->next->type == XML_TEXT_NODE) &&
3072	(cur->name == cur->next->name)) {
3073	xmlChar *tmp;
3074
3075	tmp = xmlStrdup(elem->content);
3076	tmp = xmlStrcat(tmp, cur->next->content);
3077	xmlNodeSetContent(cur->next, tmp);
3078	xmlFree(tmp);
3079	xmlFreeNode(elem);
3080	return(cur->next);
3081	}
3082	} else if (elem->type == XML_ATTRIBUTE_NODE) {
3083	return xmlAddPropSibling(cur, cur, elem);
3084	}
3085
3086	if (elem->doc != cur->doc) {
3087	xmlSetTreeDoc(elem, cur->doc);
3088	}
3089	elem->parent = cur->parent;
3090	elem->prev = cur;
3091	elem->next = cur->next;
3092	cur->next = elem;
3093	if (elem->next != NULL)
3094	elem->next->prev = elem;
3095	if ((elem->parent != NULL) && (elem->parent->last == cur))
3096	elem->parent->last = elem;
3097	return(elem);
3098	}
3099
3100	#if defined(LIBXML_TREE_ENABLED) \|\| defined(LIBXML_HTML_ENABLED) \|\| \
3101	defined(LIBXML_SCHEMAS_ENABLED) \|\| defined(LIBXML_XINCLUDE_ENABLED)
3102	/**
3103	* xmlAddPrevSibling:
3104	* @cur: the child node
3105	* @elem: the new node
3106	*
3107	* Add a new node @elem as the previous sibling of @cur
3108	* merging adjacent TEXT nodes (@elem may be freed)
3109	* If the new node was already inserted in a document it is
3110	* first unlinked from its existing context.
3111	* If the new node is ATTRIBUTE, it is added into properties instead of children.
3112	* If there is an attribute with equal name, it is first destroyed.
3113	*
3114	* Returns the new node or NULL in case of error.
3115	*/
3116	xmlNodePtr
3117	xmlAddPrevSibling(xmlNodePtr cur, xmlNodePtr elem) {
3118	if ((cur == NULL) \|\| (cur->type == XML_NAMESPACE_DECL)) {
3119	#ifdef DEBUG_TREE
3120	xmlGenericError(xmlGenericErrorContext,
3121	"xmlAddPrevSibling : cur == NULL\n");
3122	#endif
3123	return(NULL);
3124	}
3125	if ((elem == NULL) \|\| (elem->type == XML_NAMESPACE_DECL)) {
3126	#ifdef DEBUG_TREE
3127	xmlGenericError(xmlGenericErrorContext,
3128	"xmlAddPrevSibling : elem == NULL\n");
3129	#endif
3130	return(NULL);
3131	}
3132
3133	if (cur == elem) {
3134	#ifdef DEBUG_TREE
3135	xmlGenericError(xmlGenericErrorContext,
3136	"xmlAddPrevSibling : cur == elem\n");
3137	#endif
3138	return(NULL);
3139	}
3140
3141	xmlUnlinkNode(elem);
3142
3143	if (elem->type == XML_TEXT_NODE) {
3144	if (cur->type == XML_TEXT_NODE) {
3145	xmlChar *tmp;
3146
3147	tmp = xmlStrdup(elem->content);
3148	tmp = xmlStrcat(tmp, cur->content);
3149	xmlNodeSetContent(cur, tmp);
3150	xmlFree(tmp);
3151	xmlFreeNode(elem);
3152	return(cur);
3153	}
3154	if ((cur->prev != NULL) && (cur->prev->type == XML_TEXT_NODE) &&
3155	(cur->name == cur->prev->name)) {
3156	xmlNodeAddContent(cur->prev, elem->content);
3157	xmlFreeNode(elem);
3158	return(cur->prev);
3159	}
3160	} else if (elem->type == XML_ATTRIBUTE_NODE) {
3161	return xmlAddPropSibling(cur->prev, cur, elem);
3162	}
3163
3164	if (elem->doc != cur->doc) {
3165	xmlSetTreeDoc(elem, cur->doc);
3166	}
3167	elem->parent = cur->parent;
3168	elem->next = cur;
3169	elem->prev = cur->prev;
3170	cur->prev = elem;
3171	if (elem->prev != NULL)
3172	elem->prev->next = elem;
3173	if ((elem->parent != NULL) && (elem->parent->children == cur)) {
3174	elem->parent->children = elem;
3175	}
3176	return(elem);
3177	}
3178	#endif /* LIBXML_TREE_ENABLED */
3179
3180	/**
3181	* xmlAddSibling:
3182	* @cur: the child node
3183	* @elem: the new node
3184	*
3185	* Add a new element @elem to the list of siblings of @cur
3186	* merging adjacent TEXT nodes (@elem may be freed)
3187	* If the new element was already inserted in a document it is
3188	* first unlinked from its existing context.
3189	*
3190	* Returns the new element or NULL in case of error.
3191	*/
3192	xmlNodePtr
3193	xmlAddSibling(xmlNodePtr cur, xmlNodePtr elem) {
3194	xmlNodePtr parent;
3195
3196	if ((cur == NULL) \|\| (cur->type == XML_NAMESPACE_DECL)) {
3197	#ifdef DEBUG_TREE
3198	xmlGenericError(xmlGenericErrorContext,
3199	"xmlAddSibling : cur == NULL\n");
3200	#endif
3201	return(NULL);
3202	}
3203
3204	if ((elem == NULL) \|\| (elem->type == XML_NAMESPACE_DECL)) {
3205	#ifdef DEBUG_TREE
3206	xmlGenericError(xmlGenericErrorContext,
3207	"xmlAddSibling : elem == NULL\n");
3208	#endif
3209	return(NULL);
3210	}
3211
3212	if (cur == elem) {
3213	#ifdef DEBUG_TREE
3214	xmlGenericError(xmlGenericErrorContext,
3215	"xmlAddSibling : cur == elem\n");
3216	#endif
3217	return(NULL);
3218	}
3219
3220	/*
3221	* Constant time is we can rely on the ->parent->last to find
3222	* the last sibling.
3223	*/
3224	if ((cur->type != XML_ATTRIBUTE_NODE) && (cur->parent != NULL) &&
3225	(cur->parent->children != NULL) &&
3226	(cur->parent->last != NULL) &&
3227	(cur->parent->last->next == NULL)) {
3228	cur = cur->parent->last;
3229	} else {
3230	while (cur->next != NULL) cur = cur->next;
3231	}
3232
3233	xmlUnlinkNode(elem);
3234
3235	if ((cur->type == XML_TEXT_NODE) && (elem->type == XML_TEXT_NODE) &&
3236	(cur->name == elem->name)) {
3237	xmlNodeAddContent(cur, elem->content);
3238	xmlFreeNode(elem);
3239	return(cur);
3240	} else if (elem->type == XML_ATTRIBUTE_NODE) {
3241	return xmlAddPropSibling(cur, cur, elem);
3242	}
3243
3244	if (elem->doc != cur->doc) {
3245	xmlSetTreeDoc(elem, cur->doc);
3246	}
3247	parent = cur->parent;
3248	elem->prev = cur;
3249	elem->next = NULL;
3250	elem->parent = parent;
3251	cur->next = elem;
3252	if (parent != NULL)
3253	parent->last = elem;
3254
3255	return(elem);
3256	}
3257
3258	/**
3259	* xmlAddChildList:
3260	* @parent: the parent node
3261	* @cur: the first node in the list
3262	*
3263	* Add a list of node at the end of the child list of the parent
3264	* merging adjacent TEXT nodes (@cur may be freed)
3265	*
3266	* Returns the last child or NULL in case of error.
3267	*/
3268	xmlNodePtr
3269	xmlAddChildList(xmlNodePtr parent, xmlNodePtr cur) {
3270	xmlNodePtr prev;
3271
3272	if ((parent == NULL) \|\| (parent->type == XML_NAMESPACE_DECL)) {
3273	#ifdef DEBUG_TREE
3274	xmlGenericError(xmlGenericErrorContext,
3275	"xmlAddChildList : parent == NULL\n");
3276	#endif
3277	return(NULL);
3278	}
3279
3280	if ((cur == NULL) \|\| (cur->type == XML_NAMESPACE_DECL)) {
3281	#ifdef DEBUG_TREE
3282	xmlGenericError(xmlGenericErrorContext,
3283	"xmlAddChildList : child == NULL\n");
3284	#endif
3285	return(NULL);
3286	}
3287
3288	if ((cur->doc != NULL) && (parent->doc != NULL) &&
3289	(cur->doc != parent->doc)) {
3290	#ifdef DEBUG_TREE
3291	xmlGenericError(xmlGenericErrorContext,
3292	"Elements moved to a different document\n");
3293	#endif
3294	}
3295
3296	/*
3297	* add the first element at the end of the children list.
3298	*/
3299
3300	if (parent->children == NULL) {
3301	parent->children = cur;
3302	} else {
3303	/*
3304	* If cur and parent->last both are TEXT nodes, then merge them.
3305	*/
3306	if ((cur->type == XML_TEXT_NODE) &&
3307	(parent->last->type == XML_TEXT_NODE) &&
3308	(cur->name == parent->last->name)) {
3309	xmlNodeAddContent(parent->last, cur->content);
3310	/*
3311	* if it's the only child, nothing more to be done.
3312	*/
3313	if (cur->next == NULL) {
3314	xmlFreeNode(cur);
3315	return(parent->last);
3316	}
3317	prev = cur;
3318	cur = cur->next;
3319	xmlFreeNode(prev);
3320	}
3321	prev = parent->last;
3322	prev->next = cur;
3323	cur->prev = prev;
3324	}
3325	while (cur->next != NULL) {
3326	cur->parent = parent;
3327	if (cur->doc != parent->doc) {
3328	xmlSetTreeDoc(cur, parent->doc);
3329	}
3330	cur = cur->next;
3331	}
3332	cur->parent = parent;
3333	/* the parent may not be linked to a doc ! */
3334	if (cur->doc != parent->doc) {
3335	xmlSetTreeDoc(cur, parent->doc);
3336	}
3337	parent->last = cur;
3338
3339	return(cur);
3340	}
3341
3342	/**
3343	* xmlAddChild:
3344	* @parent: the parent node
3345	* @cur: the child node
3346	*
3347	* Add a new node to @parent, at the end of the child (or property) list
3348	* merging adjacent TEXT nodes (in which case @cur is freed)
3349	* If the new node is ATTRIBUTE, it is added into properties instead of children.
3350	* If there is an attribute with equal name, it is first destroyed.
3351	*
3352	* Returns the child or NULL in case of error.
3353	*/
3354	xmlNodePtr
3355	xmlAddChild(xmlNodePtr parent, xmlNodePtr cur) {
3356	xmlNodePtr prev;
3357
3358	if ((parent == NULL) \|\| (parent->type == XML_NAMESPACE_DECL)) {
3359	#ifdef DEBUG_TREE
3360	xmlGenericError(xmlGenericErrorContext,
3361	"xmlAddChild : parent == NULL\n");
3362	#endif
3363	return(NULL);
3364	}
3365
3366	if ((cur == NULL) \|\| (cur->type == XML_NAMESPACE_DECL)) {
3367	#ifdef DEBUG_TREE
3368	xmlGenericError(xmlGenericErrorContext,
3369	"xmlAddChild : child == NULL\n");
3370	#endif
3371	return(NULL);
3372	}
3373
3374	if (parent == cur) {
3375	#ifdef DEBUG_TREE
3376	xmlGenericError(xmlGenericErrorContext,
3377	"xmlAddChild : parent == cur\n");
3378	#endif
3379	return(NULL);
3380	}
3381	/*
3382	* If cur is a TEXT node, merge its content with adjacent TEXT nodes
3383	* cur is then freed.
3384	*/
3385	if (cur->type == XML_TEXT_NODE) {
3386	if ((parent->type == XML_TEXT_NODE) &&
3387	(parent->content != NULL) &&
3388	(parent->name == cur->name)) {
3389	xmlNodeAddContent(parent, cur->content);
3390	xmlFreeNode(cur);
3391	return(parent);
3392	}
3393	if ((parent->last != NULL) && (parent->last->type == XML_TEXT_NODE) &&
3394	(parent->last->name == cur->name) &&
3395	(parent->last != cur)) {
3396	xmlNodeAddContent(parent->last, cur->content);
3397	xmlFreeNode(cur);
3398	return(parent->last);
3399	}
3400	}
3401
3402	/*
3403	* add the new element at the end of the children list.
3404	*/
3405	prev = cur->parent;
3406	cur->parent = parent;
3407	if (cur->doc != parent->doc) {
3408	xmlSetTreeDoc(cur, parent->doc);
3409	}
3410	/* this check prevents a loop on tree-traversions if a developer
3411	* tries to add a node to its parent multiple times
3412	*/
3413	if (prev == parent)
3414	return(cur);
3415
3416	/*
3417	* Coalescing
3418	*/
3419	if ((parent->type == XML_TEXT_NODE) &&
3420	(parent->content != NULL) &&
3421	(parent != cur)) {
3422	xmlNodeAddContent(parent, cur->content);
3423	xmlFreeNode(cur);
3424	return(parent);
3425	}
3426	if (cur->type == XML_ATTRIBUTE_NODE) {
3427	if (parent->type != XML_ELEMENT_NODE)
3428	return(NULL);
3429	if (parent->properties != NULL) {
3430	/* check if an attribute with the same name exists */
3431	xmlAttrPtr lastattr;
3432
3433	if (cur->ns == NULL)
3434	lastattr = xmlHasNsProp(parent, cur->name, NULL);
3435	else
3436	lastattr = xmlHasNsProp(parent, cur->name, cur->ns->href);
3437	if ((lastattr != NULL) && (lastattr != (xmlAttrPtr) cur) && (lastattr->type != XML_ATTRIBUTE_DECL)) {
3438	/* different instance, destroy it (attributes must be unique) */
3439	xmlUnlinkNode((xmlNodePtr) lastattr);
3440	xmlFreeProp(lastattr);
3441	}
3442	if (lastattr == (xmlAttrPtr) cur)
3443	return(cur);
3444
3445	}
3446	if (parent->properties == NULL) {
3447	parent->properties = (xmlAttrPtr) cur;
3448	} else {
3449	/* find the end */
3450	xmlAttrPtr lastattr = parent->properties;
3451	while (lastattr->next != NULL) {
3452	lastattr = lastattr->next;
3453	}
3454	lastattr->next = (xmlAttrPtr) cur;
3455	((xmlAttrPtr) cur)->prev = lastattr;
3456	}
3457	} else {
3458	if (parent->children == NULL) {
3459	parent->children = cur;
3460	parent->last = cur;
3461	} else {
3462	prev = parent->last;
3463	prev->next = cur;
3464	cur->prev = prev;
3465	parent->last = cur;
3466	}
3467	}
3468	return(cur);
3469	}
3470
3471	/**
3472	* xmlGetLastChild:
3473	* @parent: the parent node
3474	*
3475	* Search the last child of a node.
3476	* Returns the last child or NULL if none.
3477	*/
3478	xmlNodePtr
3479	xmlGetLastChild(const xmlNode *parent) {
3480	if ((parent == NULL) \|\| (parent->type == XML_NAMESPACE_DECL)) {
3481	#ifdef DEBUG_TREE
3482	xmlGenericError(xmlGenericErrorContext,
3483	"xmlGetLastChild : parent == NULL\n");
3484	#endif
3485	return(NULL);
3486	}
3487	return(parent->last);
3488	}
3489
3490	#ifdef LIBXML_TREE_ENABLED
3491	/*
3492	* 5 interfaces from DOM ElementTraversal
3493	*/
3494
3495	/**
3496	* xmlChildElementCount:
3497	* @parent: the parent node
3498	*
3499	* Finds the current number of child nodes of that element which are
3500	* element nodes.
3501	* Note the handling of entities references is different than in
3502	* the W3C DOM element traversal spec since we don't have back reference
3503	* from entities content to entities references.
3504	*
3505	* Returns the count of element child or 0 if not available
3506	*/
3507	unsigned long
3508	xmlChildElementCount(xmlNodePtr parent) {
3509	unsigned long ret = 0;
3510	xmlNodePtr cur = NULL;
3511
3512	if (parent == NULL)
3513	return(0);
3514	switch (parent->type) {
3515	case XML_ELEMENT_NODE:
3516	case XML_ENTITY_NODE:
3517	case XML_DOCUMENT_NODE:
3518	case XML_DOCUMENT_FRAG_NODE:
3519	case XML_HTML_DOCUMENT_NODE:
3520	cur = parent->children;
3521	break;
3522	default:
3523	return(0);
3524	}
3525	while (cur != NULL) {
3526	if (cur->type == XML_ELEMENT_NODE)
3527	ret++;
3528	cur = cur->next;
3529	}
3530	return(ret);
3531	}
3532
3533	/**
3534	* xmlFirstElementChild:
3535	* @parent: the parent node
3536	*
3537	* Finds the first child node of that element which is a Element node
3538	* Note the handling of entities references is different than in
3539	* the W3C DOM element traversal spec since we don't have back reference
3540	* from entities content to entities references.
3541	*
3542	* Returns the first element child or NULL if not available
3543	*/
3544	xmlNodePtr
3545	xmlFirstElementChild(xmlNodePtr parent) {
3546	xmlNodePtr cur = NULL;
3547
3548	if (parent == NULL)
3549	return(NULL);
3550	switch (parent->type) {
3551	case XML_ELEMENT_NODE:
3552	case XML_ENTITY_NODE:
3553	case XML_DOCUMENT_NODE:
3554	case XML_DOCUMENT_FRAG_NODE:
3555	case XML_HTML_DOCUMENT_NODE:
3556	cur = parent->children;
3557	break;
3558	default:
3559	return(NULL);
3560	}
3561	while (cur != NULL) {
3562	if (cur->type == XML_ELEMENT_NODE)
3563	return(cur);
3564	cur = cur->next;
3565	}
3566	return(NULL);
3567	}
3568
3569	/**
3570	* xmlLastElementChild:
3571	* @parent: the parent node
3572	*
3573	* Finds the last child node of that element which is a Element node
3574	* Note the handling of entities references is different than in
3575	* the W3C DOM element traversal spec since we don't have back reference
3576	* from entities content to entities references.
3577	*
3578	* Returns the last element child or NULL if not available
3579	*/
3580	xmlNodePtr
3581	xmlLastElementChild(xmlNodePtr parent) {
3582	xmlNodePtr cur = NULL;
3583
3584	if (parent == NULL)
3585	return(NULL);
3586	switch (parent->type) {
3587	case XML_ELEMENT_NODE:
3588	case XML_ENTITY_NODE:
3589	case XML_DOCUMENT_NODE:
3590	case XML_DOCUMENT_FRAG_NODE:
3591	case XML_HTML_DOCUMENT_NODE:
3592	cur = parent->last;
3593	break;
3594	default:
3595	return(NULL);
3596	}
3597	while (cur != NULL) {
3598	if (cur->type == XML_ELEMENT_NODE)
3599	return(cur);
3600	cur = cur->prev;
3601	}
3602	return(NULL);
3603	}
3604
3605	/**
3606	* xmlPreviousElementSibling:
3607	* @node: the current node
3608	*
3609	* Finds the first closest previous sibling of the node which is an
3610	* element node.
3611	* Note the handling of entities references is different than in
3612	* the W3C DOM element traversal spec since we don't have back reference
3613	* from entities content to entities references.
3614	*
3615	* Returns the previous element sibling or NULL if not available
3616	*/
3617	xmlNodePtr
3618	xmlPreviousElementSibling(xmlNodePtr node) {
3619	if (node == NULL)
3620	return(NULL);
3621	switch (node->type) {
3622	case XML_ELEMENT_NODE:
3623	case XML_TEXT_NODE:
3624	case XML_CDATA_SECTION_NODE:
3625	case XML_ENTITY_REF_NODE:
3626	case XML_ENTITY_NODE:
3627	case XML_PI_NODE:
3628	case XML_COMMENT_NODE:
3629	case XML_XINCLUDE_START:
3630	case XML_XINCLUDE_END:
3631	node = node->prev;
3632	break;
3633	default:
3634	return(NULL);
3635	}
3636	while (node != NULL) {
3637	if (node->type == XML_ELEMENT_NODE)
3638	return(node);
3639	node = node->prev;
3640	}
3641	return(NULL);
3642	}
3643
3644	/**
3645	* xmlNextElementSibling:
3646	* @node: the current node
3647	*
3648	* Finds the first closest next sibling of the node which is an
3649	* element node.
3650	* Note the handling of entities references is different than in
3651	* the W3C DOM element traversal spec since we don't have back reference
3652	* from entities content to entities references.
3653	*
3654	* Returns the next element sibling or NULL if not available
3655	*/
3656	xmlNodePtr
3657	xmlNextElementSibling(xmlNodePtr node) {
3658	if (node == NULL)
3659	return(NULL);
3660	switch (node->type) {
3661	case XML_ELEMENT_NODE:
3662	case XML_TEXT_NODE:
3663	case XML_CDATA_SECTION_NODE:
3664	case XML_ENTITY_REF_NODE:
3665	case XML_ENTITY_NODE:
3666	case XML_PI_NODE:
3667	case XML_COMMENT_NODE:
3668	case XML_DTD_NODE:
3669	case XML_XINCLUDE_START:
3670	case XML_XINCLUDE_END:
3671	node = node->next;
3672	break;
3673	default:
3674	return(NULL);
3675	}
3676	while (node != NULL) {
3677	if (node->type == XML_ELEMENT_NODE)
3678	return(node);
3679	node = node->next;
3680	}
3681	return(NULL);
3682	}
3683
3684	#endif /* LIBXML_TREE_ENABLED */
3685
3686	/**
3687	* xmlFreeNodeList:
3688	* @cur: the first node in the list
3689	*
3690	* Free a node and all its siblings, this is a recursive behaviour, all
3691	* the children are freed too.
3692	*/
3693	void
3694	xmlFreeNodeList(xmlNodePtr cur) {
3695	xmlNodePtr next;
3696	xmlNodePtr parent;
3697	xmlDictPtr dict = NULL;
3698	size_t depth = 0;
3699
3700	if (cur == NULL) return;
3701	if (cur->type == XML_NAMESPACE_DECL) {
3702	xmlFreeNsList((xmlNsPtr) cur);
3703	return;
3704	}
3705	if (cur->doc != NULL) dict = cur->doc->dict;
3706	while (1) {
3707	while ((cur->children != NULL) &&
3708	(cur->type != XML_DOCUMENT_NODE) &&
3709	#ifdef LIBXML_DOCB_ENABLED
3710	(cur->type != XML_DOCB_DOCUMENT_NODE) &&
3711	#endif
3712	(cur->type != XML_HTML_DOCUMENT_NODE) &&
3713	(cur->type != XML_DTD_NODE) &&
3714	(cur->type != XML_ENTITY_REF_NODE)) {
3715	cur = cur->children;
3716	depth += 1;
3717	}
3718
3719	next = cur->next;
3720	parent = cur->parent;
3721	if ((cur->type == XML_DOCUMENT_NODE) \|\|
3722	#ifdef LIBXML_DOCB_ENABLED
3723	(cur->type == XML_DOCB_DOCUMENT_NODE) \|\|
3724	#endif
3725	(cur->type == XML_HTML_DOCUMENT_NODE)) {
3726	xmlFreeDoc((xmlDocPtr) cur);
3727	} else if (cur->type != XML_DTD_NODE) {
3728
3729	if ((__xmlRegisterCallbacks) && (xmlDeregisterNodeDefaultValue))
3730	xmlDeregisterNodeDefaultValue(cur);
3731
3732	if (((cur->type == XML_ELEMENT_NODE) \|\|
3733	(cur->type == XML_XINCLUDE_START) \|\|
3734	(cur->type == XML_XINCLUDE_END)) &&
3735	(cur->properties != NULL))
3736	xmlFreePropList(cur->properties);
3737	if ((cur->type != XML_ELEMENT_NODE) &&
3738	(cur->type != XML_XINCLUDE_START) &&
3739	(cur->type != XML_XINCLUDE_END) &&
3740	(cur->type != XML_ENTITY_REF_NODE) &&
3741	(cur->content != (xmlChar *) &(cur->properties))) {
3742	DICT_FREE(cur->content)
3743	}
3744	if (((cur->type == XML_ELEMENT_NODE) \|\|
3745	(cur->type == XML_XINCLUDE_START) \|\|
3746	(cur->type == XML_XINCLUDE_END)) &&
3747	(cur->nsDef != NULL))
3748	xmlFreeNsList(cur->nsDef);
3749
3750	/*
3751	* When a node is a text node or a comment, it uses a global static
3752	* variable for the name of the node.
3753	* Otherwise the node name might come from the document's
3754	* dictionary
3755	*/
3756	if ((cur->name != NULL) &&
3757	(cur->type != XML_TEXT_NODE) &&
3758	(cur->type != XML_COMMENT_NODE))
3759	DICT_FREE(cur->name)
3760	xmlFree(cur);
3761	}
3762
3763	if (next != NULL) {
3764	cur = next;
3765	} else {
3766	if ((depth == 0) \|\| (parent == NULL))
3767	break;
3768	depth -= 1;
3769	cur = parent;
3770	cur->children = NULL;
3771	}
3772	}
3773	}
3774
3775	/**
3776	* xmlFreeNode:
3777	* @cur: the node
3778	*
3779	* Free a node, this is a recursive behaviour, all the children are freed too.
3780	* This doesn't unlink the child from the list, use xmlUnlinkNode() first.
3781	*/
3782	void
3783	xmlFreeNode(xmlNodePtr cur) {
3784	xmlDictPtr dict = NULL;
3785
3786	if (cur == NULL) return;
3787
3788	/* use xmlFreeDtd for DTD nodes */
3789	if (cur->type == XML_DTD_NODE) {
3790	xmlFreeDtd((xmlDtdPtr) cur);
3791	return;
3792	}
3793	if (cur->type == XML_NAMESPACE_DECL) {
3794	xmlFreeNs((xmlNsPtr) cur);
3795	return;
3796	}
3797	if (cur->type == XML_ATTRIBUTE_NODE) {
3798	xmlFreeProp((xmlAttrPtr) cur);
3799	return;
3800	}
3801
3802	if ((__xmlRegisterCallbacks) && (xmlDeregisterNodeDefaultValue))
3803	xmlDeregisterNodeDefaultValue(cur);
3804
3805	if (cur->doc != NULL) dict = cur->doc->dict;
3806
3807	if (cur->type == XML_ENTITY_DECL) {
3808	xmlEntityPtr ent = (xmlEntityPtr) cur;
3809	DICT_FREE(ent->SystemID);
3810	DICT_FREE(ent->ExternalID);
3811	}
3812	if ((cur->children != NULL) &&
3813	(cur->type != XML_ENTITY_REF_NODE))
3814	xmlFreeNodeList(cur->children);
3815	if (((cur->type == XML_ELEMENT_NODE) \|\|
3816	(cur->type == XML_XINCLUDE_START) \|\|
3817	(cur->type == XML_XINCLUDE_END)) &&
3818	(cur->properties != NULL))
3819	xmlFreePropList(cur->properties);
3820	if ((cur->type != XML_ELEMENT_NODE) &&
3821	(cur->content != NULL) &&
3822	(cur->type != XML_ENTITY_REF_NODE) &&
3823	(cur->type != XML_XINCLUDE_END) &&
3824	(cur->type != XML_XINCLUDE_START) &&
3825	(cur->content != (xmlChar *) &(cur->properties))) {
3826	DICT_FREE(cur->content)
3827	}
3828
3829	/*
3830	* When a node is a text node or a comment, it uses a global static
3831	* variable for the name of the node.
3832	* Otherwise the node name might come from the document's dictionary
3833	*/
3834	if ((cur->name != NULL) &&
3835	(cur->type != XML_TEXT_NODE) &&
3836	(cur->type != XML_COMMENT_NODE))
3837	DICT_FREE(cur->name)
3838
3839	if (((cur->type == XML_ELEMENT_NODE) \|\|
3840	(cur->type == XML_XINCLUDE_START) \|\|
3841	(cur->type == XML_XINCLUDE_END)) &&
3842	(cur->nsDef != NULL))
3843	xmlFreeNsList(cur->nsDef);
3844	xmlFree(cur);
3845	}
3846
3847	/**
3848	* xmlUnlinkNode:
3849	* @cur: the node
3850	*
3851	* Unlink a node from it's current context, the node is not freed
3852	* If one need to free the node, use xmlFreeNode() routine after the
3853	* unlink to discard it.
3854	* Note that namespace nodes can't be unlinked as they do not have
3855	* pointer to their parent.
3856	*/
3857	void
3858	xmlUnlinkNode(xmlNodePtr cur) {
3859	if (cur == NULL) {
3860	#ifdef DEBUG_TREE
3861	xmlGenericError(xmlGenericErrorContext,
3862	"xmlUnlinkNode : node == NULL\n");
3863	#endif
3864	return;
3865	}
3866	if (cur->type == XML_NAMESPACE_DECL)
3867	return;
3868	if (cur->type == XML_DTD_NODE) {
3869	xmlDocPtr doc;
3870	doc = cur->doc;
3871	if (doc != NULL) {
3872	if (doc->intSubset == (xmlDtdPtr) cur)
3873	doc->intSubset = NULL;
3874	if (doc->extSubset == (xmlDtdPtr) cur)
3875	doc->extSubset = NULL;
3876	}
3877	}
3878	if (cur->type == XML_ENTITY_DECL) {
3879	xmlDocPtr doc;
3880	doc = cur->doc;
3881	if (doc != NULL) {
3882	if (doc->intSubset != NULL) {
3883	if (xmlHashLookup(doc->intSubset->entities, cur->name) == cur)
3884	xmlHashRemoveEntry(doc->intSubset->entities, cur->name,
3885	NULL);
3886	if (xmlHashLookup(doc->intSubset->pentities, cur->name) == cur)
3887	xmlHashRemoveEntry(doc->intSubset->pentities, cur->name,
3888	NULL);
3889	}
3890	if (doc->extSubset != NULL) {
3891	if (xmlHashLookup(doc->extSubset->entities, cur->name) == cur)
3892	xmlHashRemoveEntry(doc->extSubset->entities, cur->name,
3893	NULL);
3894	if (xmlHashLookup(doc->extSubset->pentities, cur->name) == cur)
3895	xmlHashRemoveEntry(doc->extSubset->pentities, cur->name,
3896	NULL);
3897	}
3898	}
3899	}
3900	if (cur->parent != NULL) {
3901	xmlNodePtr parent;
3902	parent = cur->parent;
3903	if (cur->type == XML_ATTRIBUTE_NODE) {
3904	if (parent->properties == (xmlAttrPtr) cur)
3905	parent->properties = ((xmlAttrPtr) cur)->next;
3906	} else {
3907	if (parent->children == cur)
3908	parent->children = cur->next;
3909	if (parent->last == cur)
3910	parent->last = cur->prev;
3911	}
3912	cur->parent = NULL;
3913	}
3914	if (cur->next != NULL)
3915	cur->next->prev = cur->prev;
3916	if (cur->prev != NULL)
3917	cur->prev->next = cur->next;
3918	cur->next = cur->prev = NULL;
3919	}
3920
3921	#if defined(LIBXML_TREE_ENABLED) \|\| defined(LIBXML_WRITER_ENABLED)
3922	/**
3923	* xmlReplaceNode:
3924	* @old: the old node
3925	* @cur: the node
3926	*
3927	* Unlink the old node from its current context, prune the new one
3928	* at the same place. If @cur was already inserted in a document it is
3929	* first unlinked from its existing context.
3930	*
3931	* Returns the @old node
3932	*/
3933	xmlNodePtr
3934	xmlReplaceNode(xmlNodePtr old, xmlNodePtr cur) {
3935	if (old == cur) return(NULL);
3936	if ((old == NULL) \|\| (old->type == XML_NAMESPACE_DECL) \|\|
3937	(old->parent == NULL)) {
3938	#ifdef DEBUG_TREE
3939	xmlGenericError(xmlGenericErrorContext,
3940	"xmlReplaceNode : old == NULL or without parent\n");
3941	#endif
3942	return(NULL);
3943	}
3944	if ((cur == NULL) \|\| (cur->type == XML_NAMESPACE_DECL)) {
3945	xmlUnlinkNode(old);
3946	return(old);
3947	}
3948	if (cur == old) {
3949	return(old);
3950	}
3951	if ((old->type==XML_ATTRIBUTE_NODE) && (cur->type!=XML_ATTRIBUTE_NODE)) {
3952	#ifdef DEBUG_TREE
3953	xmlGenericError(xmlGenericErrorContext,
3954	"xmlReplaceNode : Trying to replace attribute node with other node type\n");
3955	#endif
3956	return(old);
3957	}
3958	if ((cur->type==XML_ATTRIBUTE_NODE) && (old->type!=XML_ATTRIBUTE_NODE)) {
3959	#ifdef DEBUG_TREE
3960	xmlGenericError(xmlGenericErrorContext,
3961	"xmlReplaceNode : Trying to replace a non-attribute node with attribute node\n");
3962	#endif
3963	return(old);
3964	}
3965	xmlUnlinkNode(cur);
3966	xmlSetTreeDoc(cur, old->doc);
3967	cur->parent = old->parent;
3968	cur->next = old->next;
3969	if (cur->next != NULL)
3970	cur->next->prev = cur;
3971	cur->prev = old->prev;
3972	if (cur->prev != NULL)
3973	cur->prev->next = cur;
3974	if (cur->parent != NULL) {
3975	if (cur->type == XML_ATTRIBUTE_NODE) {
3976	if (cur->parent->properties == (xmlAttrPtr)old)
3977	cur->parent->properties = ((xmlAttrPtr) cur);
3978	} else {
3979	if (cur->parent->children == old)
3980	cur->parent->children = cur;
3981	if (cur->parent->last == old)
3982	cur->parent->last = cur;
3983	}
3984	}
3985	old->next = old->prev = NULL;
3986	old->parent = NULL;
3987	return(old);
3988	}
3989	#endif /* LIBXML_TREE_ENABLED */
3990
3991	/************************************************************************
3992	* *
3993	* Copy operations *
3994	* *
3995	************************************************************************/
3996
3997	/**
3998	* xmlCopyNamespace:
3999	* @cur: the namespace
4000	*
4001	* Do a copy of the namespace.
4002	*
4003	* Returns: a new #xmlNsPtr, or NULL in case of error.
4004	*/
4005	xmlNsPtr
4006	xmlCopyNamespace(xmlNsPtr cur) {
4007	xmlNsPtr ret;
4008
4009	if (cur == NULL) return(NULL);
4010	switch (cur->type) {
4011	case XML_LOCAL_NAMESPACE:
4012	ret = xmlNewNs(NULL, cur->href, cur->prefix);
4013	break;
4014	default:
4015	#ifdef DEBUG_TREE
4016	xmlGenericError(xmlGenericErrorContext,
4017	"xmlCopyNamespace: invalid type %d\n", cur->type);
4018	#endif
4019	return(NULL);
4020	}
4021	return(ret);
4022	}
4023
4024	/**
4025	* xmlCopyNamespaceList:
4026	* @cur: the first namespace
4027	*
4028	* Do a copy of an namespace list.
4029	*
4030	* Returns: a new #xmlNsPtr, or NULL in case of error.
4031	*/
4032	xmlNsPtr
4033	xmlCopyNamespaceList(xmlNsPtr cur) {
4034	xmlNsPtr ret = NULL;
4035	xmlNsPtr p = NULL,q;
4036
4037	while (cur != NULL) {
4038	q = xmlCopyNamespace(cur);
4039	if (p == NULL) {
4040	ret = p = q;
4041	} else {
4042	p->next = q;
4043	p = q;
4044	}
4045	cur = cur->next;
4046	}
4047	return(ret);
4048	}
4049
4050	static xmlNodePtr
4051	xmlStaticCopyNodeList(xmlNodePtr node, xmlDocPtr doc, xmlNodePtr parent);
4052
4053	static xmlAttrPtr
4054	xmlCopyPropInternal(xmlDocPtr doc, xmlNodePtr target, xmlAttrPtr cur) {
4055	xmlAttrPtr ret;
4056
4057	if (cur == NULL) return(NULL);
4058	if ((target != NULL) && (target->type != XML_ELEMENT_NODE))
4059	return(NULL);
4060	if (target != NULL)
4061	ret = xmlNewDocProp(target->doc, cur->name, NULL);
4062	else if (doc != NULL)
4063	ret = xmlNewDocProp(doc, cur->name, NULL);
4064	else if (cur->parent != NULL)
4065	ret = xmlNewDocProp(cur->parent->doc, cur->name, NULL);
4066	else if (cur->children != NULL)
4067	ret = xmlNewDocProp(cur->children->doc, cur->name, NULL);
4068	else
4069	ret = xmlNewDocProp(NULL, cur->name, NULL);
4070	if (ret == NULL) return(NULL);
4071	ret->parent = target;
4072
4073	if ((cur->ns != NULL) && (target != NULL)) {
4074	xmlNsPtr ns;
4075
4076	ns = xmlSearchNs(target->doc, target, cur->ns->prefix);
4077	if (ns == NULL) {
4078	/*
4079	* Humm, we are copying an element whose namespace is defined
4080	* out of the new tree scope. Search it in the original tree
4081	* and add it at the top of the new tree
4082	*/
4083	ns = xmlSearchNs(cur->doc, cur->parent, cur->ns->prefix);
4084	if (ns != NULL) {
4085	xmlNodePtr root = target;
4086	xmlNodePtr pred = NULL;
4087
4088	while (root->parent != NULL) {
4089	pred = root;
4090	root = root->parent;
4091	}
4092	if (root == (xmlNodePtr) target->doc) {
4093	/* correct possibly cycling above the document elt */
4094	root = pred;
4095	}
4096	ret->ns = xmlNewNs(root, ns->href, ns->prefix);
4097	}
4098	} else {
4099	/*
4100	* we have to find something appropriate here since
4101	* we can't be sure, that the namespace we found is identified
4102	* by the prefix
4103	*/
4104	if (xmlStrEqual(ns->href, cur->ns->href)) {
4105	/* this is the nice case */
4106	ret->ns = ns;
4107	} else {
4108	/*
4109	* we are in trouble: we need a new reconciled namespace.
4110	* This is expensive
4111	*/
4112	ret->ns = xmlNewReconciledNs(target->doc, target, cur->ns);
4113	}
4114	}
4115
4116	} else
4117	ret->ns = NULL;
4118
4119	if (cur->children != NULL) {
4120	xmlNodePtr tmp;
4121
4122	ret->children = xmlStaticCopyNodeList(cur->children, ret->doc, (xmlNodePtr) ret);
4123	ret->last = NULL;
4124	tmp = ret->children;
4125	while (tmp != NULL) {
4126	/* tmp->parent = (xmlNodePtr)ret; */
4127	if (tmp->next == NULL)
4128	ret->last = tmp;
4129	tmp = tmp->next;
4130	}
4131	}
4132	/*
4133	* Try to handle IDs
4134	*/
4135	if ((target!= NULL) && (cur!= NULL) &&
4136	(target->doc != NULL) && (cur->doc != NULL) &&
4137	(cur->doc->ids != NULL) && (cur->parent != NULL)) {
4138	if (xmlIsID(cur->doc, cur->parent, cur)) {
4139	xmlChar *id;
4140
4141	id = xmlNodeListGetString(cur->doc, cur->children, 1);
4142	if (id != NULL) {
4143	xmlAddID(NULL, target->doc, id, ret);
4144	xmlFree(id);
4145	}
4146	}
4147	}
4148	return(ret);
4149	}
4150
4151	/**
4152	* xmlCopyProp:
4153	* @target: the element where the attribute will be grafted
4154	* @cur: the attribute
4155	*
4156	* Do a copy of the attribute.
4157	*
4158	* Returns: a new #xmlAttrPtr, or NULL in case of error.
4159	*/
4160	xmlAttrPtr
4161	xmlCopyProp(xmlNodePtr target, xmlAttrPtr cur) {
4162	return xmlCopyPropInternal(NULL, target, cur);
4163	}
4164
4165	/**
4166	* xmlCopyPropList:
4167	* @target: the element where the attributes will be grafted
4168	* @cur: the first attribute
4169	*
4170	* Do a copy of an attribute list.
4171	*
4172	* Returns: a new #xmlAttrPtr, or NULL in case of error.
4173	*/
4174	xmlAttrPtr
4175	xmlCopyPropList(xmlNodePtr target, xmlAttrPtr cur) {
4176	xmlAttrPtr ret = NULL;
4177	xmlAttrPtr p = NULL,q;
4178
4179	if ((target != NULL) && (target->type != XML_ELEMENT_NODE))
4180	return(NULL);
4181	while (cur != NULL) {
4182	q = xmlCopyProp(target, cur);
4183	if (q == NULL)
4184	return(NULL);
4185	if (p == NULL) {
4186	ret = p = q;
4187	} else {
4188	p->next = q;
4189	q->prev = p;
4190	p = q;
4191	}
4192	cur = cur->next;
4193	}
4194	return(ret);
4195	}
4196
4197	/*
4198	* NOTE about the CopyNode operations !
4199	*
4200	* They are split into external and internal parts for one
4201	* tricky reason: namespaces. Doing a direct copy of a node
4202	* say RPM:Copyright without changing the namespace pointer to
4203	* something else can produce stale links. One way to do it is
4204	* to keep a reference counter but this doesn't work as soon
4205	* as one moves the element or the subtree out of the scope of
4206	* the existing namespace. The actual solution seems to be to add
4207	* a copy of the namespace at the top of the copied tree if
4208	* not available in the subtree.
4209	* Hence two functions, the public front-end call the inner ones
4210	* The argument "recursive" normally indicates a recursive copy
4211	* of the node with values 0 (no) and 1 (yes). For XInclude,
4212	* however, we allow a value of 2 to indicate copy properties and
4213	* namespace info, but don't recurse on children.
4214	*/
4215
4216	static xmlNodePtr
4217	xmlStaticCopyNode(xmlNodePtr node, xmlDocPtr doc, xmlNodePtr parent,
4218	int extended) {
4219	xmlNodePtr ret;
4220
4221	if (node == NULL) return(NULL);
4222	switch (node->type) {
4223	case XML_TEXT_NODE:
4224	case XML_CDATA_SECTION_NODE:
4225	case XML_ELEMENT_NODE:
4226	case XML_DOCUMENT_FRAG_NODE:
4227	case XML_ENTITY_REF_NODE:
4228	case XML_ENTITY_NODE:
4229	case XML_PI_NODE:
4230	case XML_COMMENT_NODE:
4231	case XML_XINCLUDE_START:
4232	case XML_XINCLUDE_END:
4233	break;
4234	case XML_ATTRIBUTE_NODE:
4235	return((xmlNodePtr) xmlCopyPropInternal(doc, parent, (xmlAttrPtr) node));
4236	case XML_NAMESPACE_DECL:
4237	return((xmlNodePtr) xmlCopyNamespaceList((xmlNsPtr) node));
4238
4239	case XML_DOCUMENT_NODE:
4240	case XML_HTML_DOCUMENT_NODE:
4241	#ifdef LIBXML_DOCB_ENABLED
4242	case XML_DOCB_DOCUMENT_NODE:
4243	#endif
4244	#ifdef LIBXML_TREE_ENABLED
4245	return((xmlNodePtr) xmlCopyDoc((xmlDocPtr) node, extended));
4246	#endif /* LIBXML_TREE_ENABLED */
4247	case XML_DOCUMENT_TYPE_NODE:
4248	case XML_NOTATION_NODE:
4249	case XML_DTD_NODE:
4250	case XML_ELEMENT_DECL:
4251	case XML_ATTRIBUTE_DECL:
4252	case XML_ENTITY_DECL:
4253	return(NULL);
4254	}
4255
4256	/*
4257	* Allocate a new node and fill the fields.
4258	*/
4259	ret = (xmlNodePtr) xmlMalloc(sizeof(xmlNode));
4260	if (ret == NULL) {
4261	xmlTreeErrMemory("copying node");
4262	return(NULL);
4263	}
4264	memset(ret, 0, sizeof(xmlNode));
4265	ret->type = node->type;
4266
4267	ret->doc = doc;
4268	ret->parent = parent;
4269	if (node->name == xmlStringText)
4270	ret->name = xmlStringText;
4271	else if (node->name == xmlStringTextNoenc)
4272	ret->name = xmlStringTextNoenc;
4273	else if (node->name == xmlStringComment)
4274	ret->name = xmlStringComment;
4275	else if (node->name != NULL) {
4276	if ((doc != NULL) && (doc->dict != NULL))
4277	ret->name = xmlDictLookup(doc->dict, node->name, -1);
4278	else
4279	ret->name = xmlStrdup(node->name);
4280	}
4281	if ((node->type != XML_ELEMENT_NODE) &&
4282	(node->content != NULL) &&
4283	(node->type != XML_ENTITY_REF_NODE) &&
4284	(node->type != XML_XINCLUDE_END) &&
4285	(node->type != XML_XINCLUDE_START)) {
4286	ret->content = xmlStrdup(node->content);
4287	}else{
4288	if (node->type == XML_ELEMENT_NODE)
4289	ret->line = node->line;
4290	}
4291	if (parent != NULL) {
4292	xmlNodePtr tmp;
4293
4294	/*
4295	* this is a tricky part for the node register thing:
4296	* in case ret does get coalesced in xmlAddChild
4297	* the deregister-node callback is called; so we register ret now already
4298	*/
4299	if ((__xmlRegisterCallbacks) && (xmlRegisterNodeDefaultValue))
4300	xmlRegisterNodeDefaultValue((xmlNodePtr)ret);
4301
4302	tmp = xmlAddChild(parent, ret);
4303	/* node could have coalesced */
4304	if (tmp != ret)
4305	return(tmp);
4306	}
4307
4308	if (!extended)
4309	goto out;
4310	if (((node->type == XML_ELEMENT_NODE) \|\|
4311	(node->type == XML_XINCLUDE_START)) && (node->nsDef != NULL))
4312	ret->nsDef = xmlCopyNamespaceList(node->nsDef);
4313
4314	if (node->ns != NULL) {
4315	xmlNsPtr ns;
4316
4317	ns = xmlSearchNs(doc, ret, node->ns->prefix);
4318	if (ns == NULL) {
4319	/*
4320	* Humm, we are copying an element whose namespace is defined
4321	* out of the new tree scope. Search it in the original tree
4322	* and add it at the top of the new tree
4323	*/
4324	ns = xmlSearchNs(node->doc, node, node->ns->prefix);
4325	if (ns != NULL) {
4326	xmlNodePtr root = ret;
4327
4328	while (root->parent != NULL) root = root->parent;
4329	ret->ns = xmlNewNs(root, ns->href, ns->prefix);
4330	} else {
4331	ret->ns = xmlNewReconciledNs(doc, ret, node->ns);
4332	}
4333	} else {
4334	/*
4335	* reference the existing namespace definition in our own tree.
4336	*/
4337	ret->ns = ns;
4338	}
4339	}
4340	if (((node->type == XML_ELEMENT_NODE) \|\|
4341	(node->type == XML_XINCLUDE_START)) && (node->properties != NULL))
4342	ret->properties = xmlCopyPropList(ret, node->properties);
4343	if (node->type == XML_ENTITY_REF_NODE) {
4344	if ((doc == NULL) \|\| (node->doc != doc)) {
4345	/*
4346	* The copied node will go into a separate document, so
4347	* to avoid dangling references to the ENTITY_DECL node
4348	* we cannot keep the reference. Try to find it in the
4349	* target document.
4350	*/
4351	ret->children = (xmlNodePtr) xmlGetDocEntity(doc, ret->name);
4352	} else {
4353	ret->children = node->children;
4354	}
4355	ret->last = ret->children;
4356	} else if ((node->children != NULL) && (extended != 2)) {
4357	ret->children = xmlStaticCopyNodeList(node->children, doc, ret);
4358	UPDATE_LAST_CHILD_AND_PARENT(ret)
4359	}
4360
4361	out:
4362	/* if parent != NULL we already registered the node above */
4363	if ((parent == NULL) &&
4364	((__xmlRegisterCallbacks) && (xmlRegisterNodeDefaultValue)))
4365	xmlRegisterNodeDefaultValue((xmlNodePtr)ret);
4366	return(ret);
4367	}
4368
4369	static xmlNodePtr
4370	xmlStaticCopyNodeList(xmlNodePtr node, xmlDocPtr doc, xmlNodePtr parent) {
4371	xmlNodePtr ret = NULL;
4372	xmlNodePtr p = NULL,q;
4373
4374	while (node != NULL) {
4375	#ifdef LIBXML_TREE_ENABLED
4376	if (node->type == XML_DTD_NODE ) {
4377	if (doc == NULL) {
4378	node = node->next;
4379	continue;
4380	}
4381	if (doc->intSubset == NULL) {
4382	q = (xmlNodePtr) xmlCopyDtd( (xmlDtdPtr) node );
4383	if (q == NULL) return(NULL);
4384	q->doc = doc;
4385	q->parent = parent;
4386	doc->intSubset = (xmlDtdPtr) q;
4387	xmlAddChild(parent, q);
4388	} else {
4389	q = (xmlNodePtr) doc->intSubset;
4390	xmlAddChild(parent, q);
4391	}
4392	} else
4393	#endif /* LIBXML_TREE_ENABLED */
4394	q = xmlStaticCopyNode(node, doc, parent, 1);
4395	if (q == NULL) return(NULL);
4396	if (ret == NULL) {
4397	q->prev = NULL;
4398	ret = p = q;
4399	} else if (p != q) {
4400	/* the test is required if xmlStaticCopyNode coalesced 2 text nodes */
4401	p->next = q;
4402	q->prev = p;
4403	p = q;
4404	}
4405	node = node->next;
4406	}
4407	return(ret);
4408	}
4409
4410	/**
4411	* xmlCopyNode:
4412	* @node: the node
4413	* @extended: if 1 do a recursive copy (properties, namespaces and children
4414	* when applicable)
4415	* if 2 copy properties and namespaces (when applicable)
4416	*
4417	* Do a copy of the node.
4418	*
4419	* Returns: a new #xmlNodePtr, or NULL in case of error.
4420	*/
4421	xmlNodePtr
4422	xmlCopyNode(xmlNodePtr node, int extended) {
4423	xmlNodePtr ret;
4424
4425	ret = xmlStaticCopyNode(node, NULL, NULL, extended);
4426	return(ret);
4427	}
4428
4429	/**
4430	* xmlDocCopyNode:
4431	* @node: the node
4432	* @doc: the document
4433	* @extended: if 1 do a recursive copy (properties, namespaces and children
4434	* when applicable)
4435	* if 2 copy properties and namespaces (when applicable)
4436	*
4437	* Do a copy of the node to a given document.
4438	*
4439	* Returns: a new #xmlNodePtr, or NULL in case of error.
4440	*/
4441	xmlNodePtr
4442	xmlDocCopyNode(xmlNodePtr node, xmlDocPtr doc, int extended) {
4443	xmlNodePtr ret;
4444
4445	ret = xmlStaticCopyNode(node, doc, NULL, extended);
4446	return(ret);
4447	}
4448
4449	/**
4450	* xmlDocCopyNodeList:
4451	* @doc: the target document
4452	* @node: the first node in the list.
4453	*
4454	* Do a recursive copy of the node list.
4455	*
4456	* Returns: a new #xmlNodePtr, or NULL in case of error.
4457	*/
4458	xmlNodePtr xmlDocCopyNodeList(xmlDocPtr doc, xmlNodePtr node) {
4459	xmlNodePtr ret = xmlStaticCopyNodeList(node, doc, NULL);
4460	return(ret);
4461	}
4462
4463	/**
4464	* xmlCopyNodeList:
4465	* @node: the first node in the list.
4466	*
4467	* Do a recursive copy of the node list.
4468	* Use xmlDocCopyNodeList() if possible to ensure string interning.
4469	*
4470	* Returns: a new #xmlNodePtr, or NULL in case of error.
4471	*/
4472	xmlNodePtr xmlCopyNodeList(xmlNodePtr node) {
4473	xmlNodePtr ret = xmlStaticCopyNodeList(node, NULL, NULL);
4474	return(ret);
4475	}
4476
4477	#if defined(LIBXML_TREE_ENABLED)
4478	/**
4479	* xmlCopyDtd:
4480	* @dtd: the dtd
4481	*
4482	* Do a copy of the dtd.
4483	*
4484	* Returns: a new #xmlDtdPtr, or NULL in case of error.
4485	*/
4486	xmlDtdPtr
4487	xmlCopyDtd(xmlDtdPtr dtd) {
4488	xmlDtdPtr ret;
4489	xmlNodePtr cur, p = NULL, q;
4490
4491	if (dtd == NULL) return(NULL);
4492	ret = xmlNewDtd(NULL, dtd->name, dtd->ExternalID, dtd->SystemID);
4493	if (ret == NULL) return(NULL);
4494	if (dtd->entities != NULL)
4495	ret->entities = (void *) xmlCopyEntitiesTable(
4496	(xmlEntitiesTablePtr) dtd->entities);
4497	if (dtd->notations != NULL)
4498	ret->notations = (void *) xmlCopyNotationTable(
4499	(xmlNotationTablePtr) dtd->notations);
4500	if (dtd->elements != NULL)
4501	ret->elements = (void *) xmlCopyElementTable(
4502	(xmlElementTablePtr) dtd->elements);
4503	if (dtd->attributes != NULL)
4504	ret->attributes = (void *) xmlCopyAttributeTable(
4505	(xmlAttributeTablePtr) dtd->attributes);
4506	if (dtd->pentities != NULL)
4507	ret->pentities = (void *) xmlCopyEntitiesTable(
4508	(xmlEntitiesTablePtr) dtd->pentities);
4509
4510	cur = dtd->children;
4511	while (cur != NULL) {
4512	q = NULL;
4513
4514	if (cur->type == XML_ENTITY_DECL) {
4515	xmlEntityPtr tmp = (xmlEntityPtr) cur;
4516	switch (tmp->etype) {
4517	case XML_INTERNAL_GENERAL_ENTITY:
4518	case XML_EXTERNAL_GENERAL_PARSED_ENTITY:
4519	case XML_EXTERNAL_GENERAL_UNPARSED_ENTITY:
4520	q = (xmlNodePtr) xmlGetEntityFromDtd(ret, tmp->name);
4521	break;
4522	case XML_INTERNAL_PARAMETER_ENTITY:
4523	case XML_EXTERNAL_PARAMETER_ENTITY:
4524	q = (xmlNodePtr)
4525	xmlGetParameterEntityFromDtd(ret, tmp->name);
4526	break;
4527	case XML_INTERNAL_PREDEFINED_ENTITY:
4528	break;
4529	}
4530	} else if (cur->type == XML_ELEMENT_DECL) {
4531	xmlElementPtr tmp = (xmlElementPtr) cur;
4532	q = (xmlNodePtr)
4533	xmlGetDtdQElementDesc(ret, tmp->name, tmp->prefix);
4534	} else if (cur->type == XML_ATTRIBUTE_DECL) {
4535	xmlAttributePtr tmp = (xmlAttributePtr) cur;
4536	q = (xmlNodePtr)
4537	xmlGetDtdQAttrDesc(ret, tmp->elem, tmp->name, tmp->prefix);
4538	} else if (cur->type == XML_COMMENT_NODE) {
4539	q = xmlCopyNode(cur, 0);
4540	}
4541
4542	if (q == NULL) {
4543	cur = cur->next;
4544	continue;
4545	}
4546
4547	if (p == NULL)
4548	ret->children = q;
4549	else
4550	p->next = q;
4551
4552	q->prev = p;
4553	q->parent = (xmlNodePtr) ret;
4554	q->next = NULL;
4555	ret->last = q;
4556	p = q;
4557	cur = cur->next;
4558	}
4559
4560	return(ret);
4561	}
4562	#endif
4563
4564	#if defined(LIBXML_TREE_ENABLED) \|\| defined(LIBXML_SCHEMAS_ENABLED)
4565	/**
4566	* xmlCopyDoc:
4567	* @doc: the document
4568	* @recursive: if not zero do a recursive copy.
4569	*
4570	* Do a copy of the document info. If recursive, the content tree will
4571	* be copied too as well as DTD, namespaces and entities.
4572	*
4573	* Returns: a new #xmlDocPtr, or NULL in case of error.
4574	*/
4575	xmlDocPtr
4576	xmlCopyDoc(xmlDocPtr doc, int recursive) {
4577	xmlDocPtr ret;
4578
4579	if (doc == NULL) return(NULL);
4580	ret = xmlNewDoc(doc->version);
4581	if (ret == NULL) return(NULL);
4582	ret->type = doc->type;
4583	if (doc->name != NULL)
4584	ret->name = xmlMemStrdup(doc->name);
4585	if (doc->encoding != NULL)
4586	ret->encoding = xmlStrdup(doc->encoding);
4587	if (doc->URL != NULL)
4588	ret->URL = xmlStrdup(doc->URL);
4589	ret->charset = doc->charset;
4590	ret->compression = doc->compression;
4591	ret->standalone = doc->standalone;
4592	if (!recursive) return(ret);
4593
4594	ret->last = NULL;
4595	ret->children = NULL;
4596	#ifdef LIBXML_TREE_ENABLED
4597	if (doc->intSubset != NULL) {
4598	ret->intSubset = xmlCopyDtd(doc->intSubset);
4599	if (ret->intSubset == NULL) {
4600	xmlFreeDoc(ret);
4601	return(NULL);
4602	}
4603	xmlSetTreeDoc((xmlNodePtr)ret->intSubset, ret);
4604	ret->intSubset->parent = ret;
4605	}
4606	#endif
4607	if (doc->oldNs != NULL)
4608	ret->oldNs = xmlCopyNamespaceList(doc->oldNs);
4609	if (doc->children != NULL) {
4610	xmlNodePtr tmp;
4611
4612	ret->children = xmlStaticCopyNodeList(doc->children, ret,
4613	(xmlNodePtr)ret);
4614	ret->last = NULL;
4615	tmp = ret->children;
4616	while (tmp != NULL) {
4617	if (tmp->next == NULL)
4618	ret->last = tmp;
4619	tmp = tmp->next;
4620	}
4621	}
4622	return(ret);
4623	}
4624	#endif /* LIBXML_TREE_ENABLED */
4625
4626	/************************************************************************
4627	* *
4628	* Content access functions *
4629	* *
4630	************************************************************************/
4631
4632	/**
4633	* xmlGetLineNoInternal:
4634	* @node: valid node
4635	* @depth: used to limit any risk of recursion
4636	*
4637	* Get line number of @node.
4638	* Try to override the limitation of lines being store in 16 bits ints
4639	*
4640	* Returns the line number if successful, -1 otherwise
4641	*/
4642	static long
4643	xmlGetLineNoInternal(const xmlNode *node, int depth)
4644	{
4645	long result = -1;
4646
4647	if (depth >= 5)
4648	return(-1);
4649
4650	if (!node)
4651	return result;
4652	if ((node->type == XML_ELEMENT_NODE) \|\|
4653	(node->type == XML_TEXT_NODE) \|\|
4654	(node->type == XML_COMMENT_NODE) \|\|
4655	(node->type == XML_PI_NODE)) {
4656	if (node->line == 65535) {
4657	if ((node->type == XML_TEXT_NODE) && (node->psvi != NULL))
4658	result = (long) (ptrdiff_t) node->psvi;
4659	else if ((node->type == XML_ELEMENT_NODE) &&
4660	(node->children != NULL))
4661	result = xmlGetLineNoInternal(node->children, depth + 1);
4662	else if (node->next != NULL)
4663	result = xmlGetLineNoInternal(node->next, depth + 1);
4664	else if (node->prev != NULL)
4665	result = xmlGetLineNoInternal(node->prev, depth + 1);
4666	}
4667	if ((result == -1) \|\| (result == 65535))
4668	result = (long) node->line;
4669	} else if ((node->prev != NULL) &&
4670	((node->prev->type == XML_ELEMENT_NODE) \|\|
4671	(node->prev->type == XML_TEXT_NODE) \|\|
4672	(node->prev->type == XML_COMMENT_NODE) \|\|
4673	(node->prev->type == XML_PI_NODE)))
4674	result = xmlGetLineNoInternal(node->prev, depth + 1);
4675	else if ((node->parent != NULL) &&
4676	(node->parent->type == XML_ELEMENT_NODE))
4677	result = xmlGetLineNoInternal(node->parent, depth + 1);
4678
4679	return result;
4680	}
4681
4682	/**
4683	* xmlGetLineNo:
4684	* @node: valid node
4685	*
4686	* Get line number of @node.
4687	* Try to override the limitation of lines being store in 16 bits ints
4688	* if XML_PARSE_BIG_LINES parser option was used
4689	*
4690	* Returns the line number if successful, -1 otherwise
4691	*/
4692	long
4693	xmlGetLineNo(const xmlNode *node)
4694	{
4695	return(xmlGetLineNoInternal(node, 0));
4696	}
4697
4698	#if defined(LIBXML_TREE_ENABLED) \|\| defined(LIBXML_DEBUG_ENABLED)
4699	/**
4700	* xmlGetNodePath:
4701	* @node: a node
4702	*
4703	* Build a structure based Path for the given node
4704	*
4705	* Returns the new path or NULL in case of error. The caller must free
4706	* the returned string
4707	*/
4708	xmlChar *
4709	xmlGetNodePath(const xmlNode *node)
4710	{
4711	const xmlNode cur, tmp, *next;
4712	xmlChar buffer = NULL, temp;
4713	size_t buf_len;
4714	xmlChar *buf;
4715	const char *sep;
4716	const char *name;
4717	char nametemp[100];
4718	int occur = 0, generic;
4719
4720	if ((node == NULL) \|\| (node->type == XML_NAMESPACE_DECL))
4721	return (NULL);
4722
4723	buf_len = 500;
4724	buffer = (xmlChar ) xmlMallocAtomic(buf_len sizeof(xmlChar));
4725	if (buffer == NULL) {
4726	xmlTreeErrMemory("getting node path");
4727	return (NULL);
4728	}
4729	buf = (xmlChar ) xmlMallocAtomic(buf_len sizeof(xmlChar));
4730	if (buf == NULL) {
4731	xmlTreeErrMemory("getting node path");
4732	xmlFree(buffer);
4733	return (NULL);
4734	}
4735
4736	buffer[0] = 0;
4737	cur = node;
4738	do {
4739	name = "";
4740	sep = "?";
4741	occur = 0;
4742	if ((cur->type == XML_DOCUMENT_NODE) \|\|
4743	(cur->type == XML_HTML_DOCUMENT_NODE)) {
4744	if (buffer[0] == '/')
4745	break;
4746	sep = "/";
4747	next = NULL;
4748	} else if (cur->type == XML_ELEMENT_NODE) {
4749	generic = 0;
4750	sep = "/";
4751	name = (const char *) cur->name;
4752	if (cur->ns) {
4753	if (cur->ns->prefix != NULL) {
4754	snprintf(nametemp, sizeof(nametemp) - 1, "%s:%s",
4755	(char )cur->ns->prefix, (char )cur->name);
4756	nametemp[sizeof(nametemp) - 1] = 0;
4757	name = nametemp;
4758	} else {
4759	/*
4760	* We cannot express named elements in the default
4761	* namespace, so use "*".
4762	*/
4763	generic = 1;
4764	name = "*";
4765	}
4766	}
4767	next = cur->parent;
4768
4769	/*
4770	* Thumbler index computation
4771	* TODO: the occurrence test seems bogus for namespaced names
4772	*/
4773	tmp = cur->prev;
4774	while (tmp != NULL) {
4775	if ((tmp->type == XML_ELEMENT_NODE) &&
4776	(generic \|\|
4777	(xmlStrEqual(cur->name, tmp->name) &&
4778	((tmp->ns == cur->ns) \|\|
4779	((tmp->ns != NULL) && (cur->ns != NULL) &&
4780	(xmlStrEqual(cur->ns->prefix, tmp->ns->prefix)))))))
4781	occur++;
4782	tmp = tmp->prev;
4783	}
4784	if (occur == 0) {
4785	tmp = cur->next;
4786	while (tmp != NULL && occur == 0) {
4787	if ((tmp->type == XML_ELEMENT_NODE) &&
4788	(generic \|\|
4789	(xmlStrEqual(cur->name, tmp->name) &&
4790	((tmp->ns == cur->ns) \|\|
4791	((tmp->ns != NULL) && (cur->ns != NULL) &&
4792	(xmlStrEqual(cur->ns->prefix, tmp->ns->prefix)))))))
4793	occur++;
4794	tmp = tmp->next;
4795	}
4796	if (occur != 0)
4797	occur = 1;
4798	} else
4799	occur++;
4800	} else if (cur->type == XML_COMMENT_NODE) {
4801	sep = "/";
4802	name = "comment()";
4803	next = cur->parent;
4804
4805	/*
4806	* Thumbler index computation
4807	*/
4808	tmp = cur->prev;
4809	while (tmp != NULL) {
4810	if (tmp->type == XML_COMMENT_NODE)
4811	occur++;
4812	tmp = tmp->prev;
4813	}
4814	if (occur == 0) {
4815	tmp = cur->next;
4816	while (tmp != NULL && occur == 0) {
4817	if (tmp->type == XML_COMMENT_NODE)
4818	occur++;
4819	tmp = tmp->next;
4820	}
4821	if (occur != 0)
4822	occur = 1;
4823	} else
4824	occur++;
4825	} else if ((cur->type == XML_TEXT_NODE) \|\|
4826	(cur->type == XML_CDATA_SECTION_NODE)) {
4827	sep = "/";
4828	name = "text()";
4829	next = cur->parent;
4830
4831	/*
4832	* Thumbler index computation
4833	*/
4834	tmp = cur->prev;
4835	while (tmp != NULL) {
4836	if ((tmp->type == XML_TEXT_NODE) \|\|
4837	(tmp->type == XML_CDATA_SECTION_NODE))
4838	occur++;
4839	tmp = tmp->prev;
4840	}
4841	/*
4842	* Evaluate if this is the only text- or CDATA-section-node;
4843	* if yes, then we'll get "text()", otherwise "text()[1]".
4844	*/
4845	if (occur == 0) {
4846	tmp = cur->next;
4847	while (tmp != NULL) {
4848	if ((tmp->type == XML_TEXT_NODE) \|\|
4849	(tmp->type == XML_CDATA_SECTION_NODE))
4850	{
4851	occur = 1;
4852	break;
4853	}
4854	tmp = tmp->next;
4855	}
4856	} else
4857	occur++;
4858	} else if (cur->type == XML_PI_NODE) {
4859	sep = "/";
4860	snprintf(nametemp, sizeof(nametemp) - 1,
4861	"processing-instruction('%s')", (char *)cur->name);
4862	nametemp[sizeof(nametemp) - 1] = 0;
4863	name = nametemp;
4864
4865	next = cur->parent;
4866
4867	/*
4868	* Thumbler index computation
4869	*/
4870	tmp = cur->prev;
4871	while (tmp != NULL) {
4872	if ((tmp->type == XML_PI_NODE) &&
4873	(xmlStrEqual(cur->name, tmp->name)))
4874	occur++;
4875	tmp = tmp->prev;
4876	}
4877	if (occur == 0) {
4878	tmp = cur->next;
4879	while (tmp != NULL && occur == 0) {
4880	if ((tmp->type == XML_PI_NODE) &&
4881	(xmlStrEqual(cur->name, tmp->name)))
4882	occur++;
4883	tmp = tmp->next;
4884	}
4885	if (occur != 0)
4886	occur = 1;
4887	} else
4888	occur++;
4889
4890	} else if (cur->type == XML_ATTRIBUTE_NODE) {
4891	sep = "/@";
4892	name = (const char *) (((xmlAttrPtr) cur)->name);
4893	if (cur->ns) {
4894	if (cur->ns->prefix != NULL)
4895	snprintf(nametemp, sizeof(nametemp) - 1, "%s:%s",
4896	(char )cur->ns->prefix, (char )cur->name);
4897	else
4898	snprintf(nametemp, sizeof(nametemp) - 1, "%s",
4899	(char *)cur->name);
4900	nametemp[sizeof(nametemp) - 1] = 0;
4901	name = nametemp;
4902	}
4903	next = ((xmlAttrPtr) cur)->parent;
4904	} else {
4905	xmlFree(buf);
4906	xmlFree(buffer);
4907	return (NULL);
4908	}
4909
4910	/*
4911	* Make sure there is enough room
4912	*/
4913	if (xmlStrlen(buffer) + sizeof(nametemp) + 20 > buf_len) {
4914	buf_len =
4915	2 * buf_len + xmlStrlen(buffer) + sizeof(nametemp) + 20;
4916	temp = (xmlChar *) xmlRealloc(buffer, buf_len);
4917	if (temp == NULL) {
4918	xmlTreeErrMemory("getting node path");
4919	xmlFree(buf);
4920	xmlFree(buffer);
4921	return (NULL);
4922	}
4923	buffer = temp;
4924	temp = (xmlChar *) xmlRealloc(buf, buf_len);
4925	if (temp == NULL) {
4926	xmlTreeErrMemory("getting node path");
4927	xmlFree(buf);
4928	xmlFree(buffer);
4929	return (NULL);
4930	}
4931	buf = temp;
4932	}
4933	if (occur == 0)
4934	snprintf((char *) buf, buf_len, "%s%s%s",
4935	sep, name, (char *) buffer);
4936	else
4937	snprintf((char *) buf, buf_len, "%s%s[%d]%s",
4938	sep, name, occur, (char *) buffer);
4939	snprintf((char ) buffer, buf_len, "%s", (char )buf);
4940	cur = next;
4941	} while (cur != NULL);
4942	xmlFree(buf);
4943	return (buffer);
4944	}
4945	#endif /* LIBXML_TREE_ENABLED */
4946
4947	/**
4948	* xmlDocGetRootElement:
4949	* @doc: the document
4950	*
4951	* Get the root element of the document (doc->children is a list
4952	* containing possibly comments, PIs, etc ...).
4953	*
4954	* Returns the #xmlNodePtr for the root or NULL
4955	*/
4956	xmlNodePtr
4957	xmlDocGetRootElement(const xmlDoc *doc) {
4958	xmlNodePtr ret;
4959
4960	if (doc == NULL) return(NULL);
4961	ret = doc->children;
4962	while (ret != NULL) {
4963	if (ret->type == XML_ELEMENT_NODE)
4964	return(ret);
4965	ret = ret->next;
4966	}
4967	return(ret);
4968	}
4969
4970	#if defined(LIBXML_TREE_ENABLED) \|\| defined(LIBXML_WRITER_ENABLED)
4971	/**
4972	* xmlDocSetRootElement:
4973	* @doc: the document
4974	* @root: the new document root element, if root is NULL no action is taken,
4975	* to remove a node from a document use xmlUnlinkNode(root) instead.
4976	*
4977	* Set the root element of the document (doc->children is a list
4978	* containing possibly comments, PIs, etc ...).
4979	*
4980	* Returns the old root element if any was found, NULL if root was NULL
4981	*/
4982	xmlNodePtr
4983	xmlDocSetRootElement(xmlDocPtr doc, xmlNodePtr root) {
4984	xmlNodePtr old = NULL;
4985
4986	if (doc == NULL) return(NULL);
4987	if ((root == NULL) \|\| (root->type == XML_NAMESPACE_DECL))
4988	return(NULL);
4989	xmlUnlinkNode(root);
4990	xmlSetTreeDoc(root, doc);
4991	root->parent = (xmlNodePtr) doc;
4992	old = doc->children;
4993	while (old != NULL) {
4994	if (old->type == XML_ELEMENT_NODE)
4995	break;
4996	old = old->next;
4997	}
4998	if (old == NULL) {
4999	if (doc->children == NULL) {
5000	doc->children = root;
5001	doc->last = root;
5002	} else {
5003	xmlAddSibling(doc->children, root);
5004	}
5005	} else {
5006	xmlReplaceNode(old, root);
5007	}
5008	return(old);
5009	}
5010	#endif
5011
5012	#if defined(LIBXML_TREE_ENABLED)
5013	/**
5014	* xmlNodeSetLang:
5015	* @cur: the node being changed
5016	* @lang: the language description
5017	*
5018	* Set the language of a node, i.e. the values of the xml:lang
5019	* attribute.
5020	*/
5021	void
5022	xmlNodeSetLang(xmlNodePtr cur, const xmlChar *lang) {
5023	xmlNsPtr ns;
5024
5025	if (cur == NULL) return;
5026	switch(cur->type) {
5027	case XML_TEXT_NODE:
5028	case XML_CDATA_SECTION_NODE:
5029	case XML_COMMENT_NODE:
5030	case XML_DOCUMENT_NODE:
5031	case XML_DOCUMENT_TYPE_NODE:
5032	case XML_DOCUMENT_FRAG_NODE:
5033	case XML_NOTATION_NODE:
5034	case XML_HTML_DOCUMENT_NODE:
5035	case XML_DTD_NODE:
5036	case XML_ELEMENT_DECL:
5037	case XML_ATTRIBUTE_DECL:
5038	case XML_ENTITY_DECL:
5039	case XML_PI_NODE:
5040	case XML_ENTITY_REF_NODE:
5041	case XML_ENTITY_NODE:
5042	case XML_NAMESPACE_DECL:
5043	#ifdef LIBXML_DOCB_ENABLED
5044	case XML_DOCB_DOCUMENT_NODE:
5045	#endif
5046	case XML_XINCLUDE_START:
5047	case XML_XINCLUDE_END:
5048	return;
5049	case XML_ELEMENT_NODE:
5050	case XML_ATTRIBUTE_NODE:
5051	break;
5052	}
5053	ns = xmlSearchNsByHref(cur->doc, cur, XML_XML_NAMESPACE);
5054	if (ns == NULL)
5055	return;
5056	xmlSetNsProp(cur, ns, BAD_CAST "lang", lang);
5057	}
5058	#endif /* LIBXML_TREE_ENABLED */
5059
5060	/**
5061	* xmlNodeGetLang:
5062	* @cur: the node being checked
5063	*
5064	* Searches the language of a node, i.e. the values of the xml:lang
5065	* attribute or the one carried by the nearest ancestor.
5066	*
5067	* Returns a pointer to the lang value, or NULL if not found
5068	* It's up to the caller to free the memory with xmlFree().
5069	*/
5070	xmlChar *
5071	xmlNodeGetLang(const xmlNode *cur) {
5072	xmlChar *lang;
5073
5074	if ((cur == NULL) \|\| (cur->type == XML_NAMESPACE_DECL))
5075	return(NULL);
5076	while (cur != NULL) {
5077	lang = xmlGetNsProp(cur, BAD_CAST "lang", XML_XML_NAMESPACE);
5078	if (lang != NULL)
5079	return(lang);
5080	cur = cur->parent;
5081	}
5082	return(NULL);
5083	}
5084
5085
5086	#ifdef LIBXML_TREE_ENABLED
5087	/**
5088	* xmlNodeSetSpacePreserve:
5089	* @cur: the node being changed
5090	* @val: the xml:space value ("0": default, 1: "preserve")
5091	*
5092	* Set (or reset) the space preserving behaviour of a node, i.e. the
5093	* value of the xml:space attribute.
5094	*/
5095	void
5096	xmlNodeSetSpacePreserve(xmlNodePtr cur, int val) {
5097	xmlNsPtr ns;
5098
5099	if (cur == NULL) return;
5100	switch(cur->type) {
5101	case XML_TEXT_NODE:
5102	case XML_CDATA_SECTION_NODE:
5103	case XML_COMMENT_NODE:
5104	case XML_DOCUMENT_NODE:
5105	case XML_DOCUMENT_TYPE_NODE:
5106	case XML_DOCUMENT_FRAG_NODE:
5107	case XML_NOTATION_NODE:
5108	case XML_HTML_DOCUMENT_NODE:
5109	case XML_DTD_NODE:
5110	case XML_ELEMENT_DECL:
5111	case XML_ATTRIBUTE_DECL:
5112	case XML_ENTITY_DECL:
5113	case XML_PI_NODE:
5114	case XML_ENTITY_REF_NODE:
5115	case XML_ENTITY_NODE:
5116	case XML_NAMESPACE_DECL:
5117	case XML_XINCLUDE_START:
5118	case XML_XINCLUDE_END:
5119	#ifdef LIBXML_DOCB_ENABLED
5120	case XML_DOCB_DOCUMENT_NODE:
5121	#endif
5122	return;
5123	case XML_ELEMENT_NODE:
5124	case XML_ATTRIBUTE_NODE:
5125	break;
5126	}
5127	ns = xmlSearchNsByHref(cur->doc, cur, XML_XML_NAMESPACE);
5128	if (ns == NULL)
5129	return;
5130	switch (val) {
5131	case 0:
5132	xmlSetNsProp(cur, ns, BAD_CAST "space", BAD_CAST "default");
5133	break;
5134	case 1:
5135	xmlSetNsProp(cur, ns, BAD_CAST "space", BAD_CAST "preserve");
5136	break;
5137	}
5138	}
5139	#endif /* LIBXML_TREE_ENABLED */
5140
5141	/**
5142	* xmlNodeGetSpacePreserve:
5143	* @cur: the node being checked
5144	*
5145	* Searches the space preserving behaviour of a node, i.e. the values
5146	* of the xml:space attribute or the one carried by the nearest
5147	* ancestor.
5148	*
5149	* Returns -1 if xml:space is not inherited, 0 if "default", 1 if "preserve"
5150	*/
5151	int
5152	xmlNodeGetSpacePreserve(const xmlNode *cur) {
5153	xmlChar *space;
5154
5155	if ((cur == NULL) \|\| (cur->type != XML_ELEMENT_NODE))
5156	return(-1);
5157	while (cur != NULL) {
5158	space = xmlGetNsProp(cur, BAD_CAST "space", XML_XML_NAMESPACE);
5159	if (space != NULL) {
5160	if (xmlStrEqual(space, BAD_CAST "preserve")) {
5161	xmlFree(space);
5162	return(1);
5163	}
5164	if (xmlStrEqual(space, BAD_CAST "default")) {
5165	xmlFree(space);
5166	return(0);
5167	}
5168	xmlFree(space);
5169	}
5170	cur = cur->parent;
5171	}
5172	return(-1);
5173	}
5174
5175	#ifdef LIBXML_TREE_ENABLED
5176	/**
5177	* xmlNodeSetName:
5178	* @cur: the node being changed
5179	* @name: the new tag name
5180	*
5181	* Set (or reset) the name of a node.
5182	*/
5183	void
5184	xmlNodeSetName(xmlNodePtr cur, const xmlChar *name) {
5185	xmlDocPtr doc;
5186	xmlDictPtr dict;
5187	const xmlChar *freeme = NULL;
5188
5189	if (cur == NULL) return;
5190	if (name == NULL) return;
5191	switch(cur->type) {
5192	case XML_TEXT_NODE:
5193	case XML_CDATA_SECTION_NODE:
5194	case XML_COMMENT_NODE:
5195	case XML_DOCUMENT_TYPE_NODE:
5196	case XML_DOCUMENT_FRAG_NODE:
5197	case XML_NOTATION_NODE:
5198	case XML_HTML_DOCUMENT_NODE:
5199	case XML_NAMESPACE_DECL:
5200	case XML_XINCLUDE_START:
5201	case XML_XINCLUDE_END:
5202	#ifdef LIBXML_DOCB_ENABLED
5203	case XML_DOCB_DOCUMENT_NODE:
5204	#endif
5205	return;
5206	case XML_ELEMENT_NODE:
5207	case XML_ATTRIBUTE_NODE:
5208	case XML_PI_NODE:
5209	case XML_ENTITY_REF_NODE:
5210	case XML_ENTITY_NODE:
5211	case XML_DTD_NODE:
5212	case XML_DOCUMENT_NODE:
5213	case XML_ELEMENT_DECL:
5214	case XML_ATTRIBUTE_DECL:
5215	case XML_ENTITY_DECL:
5216	break;
5217	}
5218	doc = cur->doc;
5219	if (doc != NULL)
5220	dict = doc->dict;
5221	else
5222	dict = NULL;
5223	if (dict != NULL) {
5224	if ((cur->name != NULL) && (!xmlDictOwns(dict, cur->name)))
5225	freeme = cur->name;
5226	cur->name = xmlDictLookup(dict, name, -1);
5227	} else {
5228	if (cur->name != NULL)
5229	freeme = cur->name;
5230	cur->name = xmlStrdup(name);
5231	}
5232
5233	if (freeme)
5234	xmlFree((xmlChar *) freeme);
5235	}
5236	#endif
5237
5238	#if defined(LIBXML_TREE_ENABLED) \|\| defined(LIBXML_XINCLUDE_ENABLED)
5239	/**
5240	* xmlNodeSetBase:
5241	* @cur: the node being changed
5242	* @uri: the new base URI
5243	*
5244	* Set (or reset) the base URI of a node, i.e. the value of the
5245	* xml:base attribute.
5246	*/
5247	void
5248	xmlNodeSetBase(xmlNodePtr cur, const xmlChar* uri) {
5249	xmlNsPtr ns;
5250	xmlChar* fixed;
5251
5252	if (cur == NULL) return;
5253	switch(cur->type) {
5254	case XML_TEXT_NODE:
5255	case XML_CDATA_SECTION_NODE:
5256	case XML_COMMENT_NODE:
5257	case XML_DOCUMENT_TYPE_NODE:
5258	case XML_DOCUMENT_FRAG_NODE:
5259	case XML_NOTATION_NODE:
5260	case XML_DTD_NODE:
5261	case XML_ELEMENT_DECL:
5262	case XML_ATTRIBUTE_DECL:
5263	case XML_ENTITY_DECL:
5264	case XML_PI_NODE:
5265	case XML_ENTITY_REF_NODE:
5266	case XML_ENTITY_NODE:
5267	case XML_NAMESPACE_DECL:
5268	case XML_XINCLUDE_START:
5269	case XML_XINCLUDE_END:
5270	return;
5271	case XML_ELEMENT_NODE:
5272	case XML_ATTRIBUTE_NODE:
5273	break;
5274	case XML_DOCUMENT_NODE:
5275	#ifdef LIBXML_DOCB_ENABLED
5276	case XML_DOCB_DOCUMENT_NODE:
5277	#endif
5278	case XML_HTML_DOCUMENT_NODE: {
5279	xmlDocPtr doc = (xmlDocPtr) cur;
5280
5281	if (doc->URL != NULL)
5282	xmlFree((xmlChar *) doc->URL);
5283	if (uri == NULL)
5284	doc->URL = NULL;
5285	else
5286	doc->URL = xmlPathToURI(uri);
5287	return;
5288	}
5289	}
5290
5291	ns = xmlSearchNsByHref(cur->doc, cur, XML_XML_NAMESPACE);
5292	if (ns == NULL)
5293	return;
5294	fixed = xmlPathToURI(uri);
5295	if (fixed != NULL) {
5296	xmlSetNsProp(cur, ns, BAD_CAST "base", fixed);
5297	xmlFree(fixed);
5298	} else {
5299	xmlSetNsProp(cur, ns, BAD_CAST "base", uri);
5300	}
5301	}
5302	#endif /* LIBXML_TREE_ENABLED */
5303
5304	/**
5305	* xmlNodeGetBase:
5306	* @doc: the document the node pertains to
5307	* @cur: the node being checked
5308	*
5309	* Searches for the BASE URL. The code should work on both XML
5310	* and HTML document even if base mechanisms are completely different.
5311	* It returns the base as defined in RFC 2396 sections
5312	* 5.1.1. Base URI within Document Content
5313	* and
5314	* 5.1.2. Base URI from the Encapsulating Entity
5315	* However it does not return the document base (5.1.3), use
5316	* doc->URL in this case
5317	*
5318	* Returns a pointer to the base URL, or NULL if not found
5319	* It's up to the caller to free the memory with xmlFree().
5320	*/
5321	xmlChar *
5322	xmlNodeGetBase(const xmlDoc doc, const xmlNode cur) {
5323	xmlChar *oldbase = NULL;
5324	xmlChar base, newbase;
5325
5326	if ((cur == NULL) && (doc == NULL))
5327	return(NULL);
5328	if ((cur != NULL) && (cur->type == XML_NAMESPACE_DECL))
5329	return(NULL);
5330	if (doc == NULL) doc = cur->doc;
5331	if ((doc != NULL) && (doc->type == XML_HTML_DOCUMENT_NODE)) {
5332	cur = doc->children;
5333	while ((cur != NULL) && (cur->name != NULL)) {
5334	if (cur->type != XML_ELEMENT_NODE) {
5335	cur = cur->next;
5336	continue;
5337	}
5338	if (!xmlStrcasecmp(cur->name, BAD_CAST "html")) {
5339	cur = cur->children;
5340	continue;
5341	}
5342	if (!xmlStrcasecmp(cur->name, BAD_CAST "head")) {
5343	cur = cur->children;
5344	continue;
5345	}
5346	if (!xmlStrcasecmp(cur->name, BAD_CAST "base")) {
5347	return(xmlGetProp(cur, BAD_CAST "href"));
5348	}
5349	cur = cur->next;
5350	}
5351	return(NULL);
5352	}
5353	while (cur != NULL) {
5354	if (cur->type == XML_ENTITY_DECL) {
5355	xmlEntityPtr ent = (xmlEntityPtr) cur;
5356	return(xmlStrdup(ent->URI));
5357	}
5358	if (cur->type == XML_ELEMENT_NODE) {
5359	base = xmlGetNsProp(cur, BAD_CAST "base", XML_XML_NAMESPACE);
5360	if (base != NULL) {
5361	if (oldbase != NULL) {
5362	newbase = xmlBuildURI(oldbase, base);
5363	if (newbase != NULL) {
5364	xmlFree(oldbase);
5365	xmlFree(base);
5366	oldbase = newbase;
5367	} else {
5368	xmlFree(oldbase);
5369	xmlFree(base);
5370	return(NULL);
5371	}
5372	} else {
5373	oldbase = base;
5374	}
5375	if ((!xmlStrncmp(oldbase, BAD_CAST "http://", 7)) \|\|
5376	(!xmlStrncmp(oldbase, BAD_CAST "ftp://", 6)) \|\|
5377	(!xmlStrncmp(oldbase, BAD_CAST "urn:", 4)))
5378	return(oldbase);
5379	}
5380	}
5381	cur = cur->parent;
5382	}
5383	if ((doc != NULL) && (doc->URL != NULL)) {
5384	if (oldbase == NULL)
5385	return(xmlStrdup(doc->URL));
5386	newbase = xmlBuildURI(oldbase, doc->URL);
5387	xmlFree(oldbase);
5388	return(newbase);
5389	}
5390	return(oldbase);
5391	}
5392
5393	/**
5394	* xmlNodeBufGetContent:
5395	* @buffer: a buffer
5396	* @cur: the node being read
5397	*
5398	* Read the value of a node @cur, this can be either the text carried
5399	* directly by this node if it's a TEXT node or the aggregate string
5400	* of the values carried by this node child's (TEXT and ENTITY_REF).
5401	* Entity references are substituted.
5402	* Fills up the buffer @buffer with this value
5403	*
5404	* Returns 0 in case of success and -1 in case of error.
5405	*/
5406	int
5407	xmlNodeBufGetContent(xmlBufferPtr buffer, const xmlNode *cur)
5408	{
5409	xmlBufPtr buf;
5410	int ret;
5411
5412	if ((cur == NULL) \|\| (buffer == NULL)) return(-1);
5413	buf = xmlBufFromBuffer(buffer);
5414	ret = xmlBufGetNodeContent(buf, cur);
5415	buffer = xmlBufBackToBuffer(buf);
5416	if ((ret < 0) \|\| (buffer == NULL))
5417	return(-1);
5418	return(0);
5419	}
5420
5421	/**
5422	* xmlBufGetNodeContent:
5423	* @buf: a buffer xmlBufPtr
5424	* @cur: the node being read
5425	*
5426	* Read the value of a node @cur, this can be either the text carried
5427	* directly by this node if it's a TEXT node or the aggregate string
5428	* of the values carried by this node child's (TEXT and ENTITY_REF).
5429	* Entity references are substituted.
5430	* Fills up the buffer @buf with this value
5431	*
5432	* Returns 0 in case of success and -1 in case of error.
5433	*/
5434	int
5435	xmlBufGetNodeContent(xmlBufPtr buf, const xmlNode *cur)
5436	{
5437	if ((cur == NULL) \|\| (buf == NULL)) return(-1);
5438	switch (cur->type) {
5439	case XML_CDATA_SECTION_NODE:
5440	case XML_TEXT_NODE:
5441	xmlBufCat(buf, cur->content);
5442	break;
5443	case XML_DOCUMENT_FRAG_NODE:
5444	case XML_ELEMENT_NODE:{
5445	const xmlNode *tmp = cur;
5446
5447	while (tmp != NULL) {
5448	switch (tmp->type) {
5449	case XML_CDATA_SECTION_NODE:
5450	case XML_TEXT_NODE:
5451	if (tmp->content != NULL)
5452	xmlBufCat(buf, tmp->content);
5453	break;
5454	case XML_ENTITY_REF_NODE:
5455	xmlBufGetNodeContent(buf, tmp);
5456	break;
5457	default:
5458	break;
5459	}
5460	/*
5461	* Skip to next node
5462	*/
5463	if (tmp->children != NULL) {
5464	if (tmp->children->type != XML_ENTITY_DECL) {
5465	tmp = tmp->children;
5466	continue;
5467	}
5468	}
5469	if (tmp == cur)
5470	break;
5471
5472	if (tmp->next != NULL) {
5473	tmp = tmp->next;
5474	continue;
5475	}
5476
5477	do {
5478	tmp = tmp->parent;
5479	if (tmp == NULL)
5480	break;
5481	if (tmp == cur) {
5482	tmp = NULL;
5483	break;
5484	}
5485	if (tmp->next != NULL) {
5486	tmp = tmp->next;
5487	break;
5488	}
5489	} while (tmp != NULL);
5490	}
5491	break;
5492	}
5493	case XML_ATTRIBUTE_NODE:{
5494	xmlAttrPtr attr = (xmlAttrPtr) cur;
5495	xmlNodePtr tmp = attr->children;
5496
5497	while (tmp != NULL) {
5498	if (tmp->type == XML_TEXT_NODE)
5499	xmlBufCat(buf, tmp->content);
5500	else
5501	xmlBufGetNodeContent(buf, tmp);
5502	tmp = tmp->next;
5503	}
5504	break;
5505	}
5506	case XML_COMMENT_NODE:
5507	case XML_PI_NODE:
5508	xmlBufCat(buf, cur->content);
5509	break;
5510	case XML_ENTITY_REF_NODE:{
5511	xmlEntityPtr ent;
5512	xmlNodePtr tmp;
5513
5514	/* lookup entity declaration */
5515	ent = xmlGetDocEntity(cur->doc, cur->name);
5516	if (ent == NULL)
5517	return(-1);
5518
5519	/* an entity content can be any "well balanced chunk",
5520	* i.e. the result of the content [43] production:
5521	* http://www.w3.org/TR/REC-xml#NT-content
5522	* -> we iterate through child nodes and recursive call
5523	* xmlNodeGetContent() which handles all possible node types */
5524	tmp = ent->children;
5525	while (tmp) {
5526	xmlBufGetNodeContent(buf, tmp);
5527	tmp = tmp->next;
5528	}
5529	break;
5530	}
5531	case XML_ENTITY_NODE:
5532	case XML_DOCUMENT_TYPE_NODE:
5533	case XML_NOTATION_NODE:
5534	case XML_DTD_NODE:
5535	case XML_XINCLUDE_START:
5536	case XML_XINCLUDE_END:
5537	break;
5538	case XML_DOCUMENT_NODE:
5539	#ifdef LIBXML_DOCB_ENABLED
5540	case XML_DOCB_DOCUMENT_NODE:
5541	#endif
5542	case XML_HTML_DOCUMENT_NODE:
5543	cur = cur->children;
5544	while (cur!= NULL) {
5545	if ((cur->type == XML_ELEMENT_NODE) \|\|
5546	(cur->type == XML_TEXT_NODE) \|\|
5547	(cur->type == XML_CDATA_SECTION_NODE)) {
5548	xmlBufGetNodeContent(buf, cur);
5549	}
5550	cur = cur->next;
5551	}
5552	break;
5553	case XML_NAMESPACE_DECL:
5554	xmlBufCat(buf, ((xmlNsPtr) cur)->href);
5555	break;
5556	case XML_ELEMENT_DECL:
5557	case XML_ATTRIBUTE_DECL:
5558	case XML_ENTITY_DECL:
5559	break;
5560	}
5561	return(0);
5562	}
5563
5564	/**
5565	* xmlNodeGetContent:
5566	* @cur: the node being read
5567	*
5568	* Read the value of a node, this can be either the text carried
5569	* directly by this node if it's a TEXT node or the aggregate string
5570	* of the values carried by this node child's (TEXT and ENTITY_REF).
5571	* Entity references are substituted.
5572	* Returns a new #xmlChar * or NULL if no content is available.
5573	* It's up to the caller to free the memory with xmlFree().
5574	*/
5575	xmlChar *
5576	xmlNodeGetContent(const xmlNode *cur)
5577	{
5578	if (cur == NULL)
5579	return (NULL);
5580	switch (cur->type) {
5581	case XML_DOCUMENT_FRAG_NODE:
5582	case XML_ELEMENT_NODE:{
5583	xmlBufPtr buf;
5584	xmlChar *ret;
5585
5586	buf = xmlBufCreateSize(64);
5587	if (buf == NULL)
5588	return (NULL);
5589	xmlBufGetNodeContent(buf, cur);
5590	ret = xmlBufDetach(buf);
5591	xmlBufFree(buf);
5592	return (ret);
5593	}
5594	case XML_ATTRIBUTE_NODE:
5595	return(xmlGetPropNodeValueInternal((xmlAttrPtr) cur));
5596	case XML_COMMENT_NODE:
5597	case XML_PI_NODE:
5598	if (cur->content != NULL)
5599	return (xmlStrdup(cur->content));
5600	return (NULL);
5601	case XML_ENTITY_REF_NODE:{
5602	xmlEntityPtr ent;
5603	xmlBufPtr buf;
5604	xmlChar *ret;
5605
5606	/* lookup entity declaration */
5607	ent = xmlGetDocEntity(cur->doc, cur->name);
5608	if (ent == NULL)
5609	return (NULL);
5610
5611	buf = xmlBufCreate();
5612	if (buf == NULL)
5613	return (NULL);
5614
5615	xmlBufGetNodeContent(buf, cur);
5616
5617	ret = xmlBufDetach(buf);
5618	xmlBufFree(buf);
5619	return (ret);
5620	}
5621	case XML_ENTITY_NODE:
5622	case XML_DOCUMENT_TYPE_NODE:
5623	case XML_NOTATION_NODE:
5624	case XML_DTD_NODE:
5625	case XML_XINCLUDE_START:
5626	case XML_XINCLUDE_END:
5627	return (NULL);
5628	case XML_DOCUMENT_NODE:
5629	#ifdef LIBXML_DOCB_ENABLED
5630	case XML_DOCB_DOCUMENT_NODE:
5631	#endif
5632	case XML_HTML_DOCUMENT_NODE: {
5633	xmlBufPtr buf;
5634	xmlChar *ret;
5635
5636	buf = xmlBufCreate();
5637	if (buf == NULL)
5638	return (NULL);
5639
5640	xmlBufGetNodeContent(buf, (xmlNodePtr) cur);
5641
5642	ret = xmlBufDetach(buf);
5643	xmlBufFree(buf);
5644	return (ret);
5645	}
5646	case XML_NAMESPACE_DECL: {
5647	xmlChar *tmp;
5648
5649	tmp = xmlStrdup(((xmlNsPtr) cur)->href);
5650	return (tmp);
5651	}
5652	case XML_ELEMENT_DECL:
5653	/* TODO !!! */
5654	return (NULL);
5655	case XML_ATTRIBUTE_DECL:
5656	/* TODO !!! */
5657	return (NULL);
5658	case XML_ENTITY_DECL:
5659	/* TODO !!! */
5660	return (NULL);
5661	case XML_CDATA_SECTION_NODE:
5662	case XML_TEXT_NODE:
5663	if (cur->content != NULL)
5664	return (xmlStrdup(cur->content));
5665	return (NULL);
5666	}
5667	return (NULL);
5668	}
5669
5670	/**
5671	* xmlNodeSetContent:
5672	* @cur: the node being modified
5673	* @content: the new value of the content
5674	*
5675	* Replace the content of a node.
5676	* NOTE: @content is supposed to be a piece of XML CDATA, so it allows entity
5677	* references, but XML special chars need to be escaped first by using
5678	* xmlEncodeEntitiesReentrant() resp. xmlEncodeSpecialChars().
5679	*/
5680	void
5681	xmlNodeSetContent(xmlNodePtr cur, const xmlChar *content) {
5682	if (cur == NULL) {
5683	#ifdef DEBUG_TREE
5684	xmlGenericError(xmlGenericErrorContext,
5685	"xmlNodeSetContent : node == NULL\n");
5686	#endif
5687	return;
5688	}
5689	switch (cur->type) {
5690	case XML_DOCUMENT_FRAG_NODE:
5691	case XML_ELEMENT_NODE:
5692	case XML_ATTRIBUTE_NODE:
5693	if (cur->children != NULL) xmlFreeNodeList(cur->children);
5694	cur->children = xmlStringGetNodeList(cur->doc, content);
5695	UPDATE_LAST_CHILD_AND_PARENT(cur)
5696	break;
5697	case XML_TEXT_NODE:
5698	case XML_CDATA_SECTION_NODE:
5699	case XML_ENTITY_REF_NODE:
5700	case XML_ENTITY_NODE:
5701	case XML_PI_NODE:
5702	case XML_COMMENT_NODE:
5703	if ((cur->content != NULL) &&
5704	(cur->content != (xmlChar *) &(cur->properties))) {
5705	if (!((cur->doc != NULL) && (cur->doc->dict != NULL) &&
5706	(xmlDictOwns(cur->doc->dict, cur->content))))
5707	xmlFree(cur->content);
5708	}
5709	if (cur->children != NULL) xmlFreeNodeList(cur->children);
5710	cur->last = cur->children = NULL;
5711	if (content != NULL) {
5712	cur->content = xmlStrdup(content);
5713	} else
5714	cur->content = NULL;
5715	cur->properties = NULL;
5716	cur->nsDef = NULL;
5717	break;
5718	case XML_DOCUMENT_NODE:
5719	case XML_HTML_DOCUMENT_NODE:
5720	case XML_DOCUMENT_TYPE_NODE:
5721	case XML_XINCLUDE_START:
5722	case XML_XINCLUDE_END:
5723	#ifdef LIBXML_DOCB_ENABLED
5724	case XML_DOCB_DOCUMENT_NODE:
5725	#endif
5726	break;
5727	case XML_NOTATION_NODE:
5728	break;
5729	case XML_DTD_NODE:
5730	break;
5731	case XML_NAMESPACE_DECL:
5732	break;
5733	case XML_ELEMENT_DECL:
5734	/* TODO !!! */
5735	break;
5736	case XML_ATTRIBUTE_DECL:
5737	/* TODO !!! */
5738	break;
5739	case XML_ENTITY_DECL:
5740	/* TODO !!! */
5741	break;
5742	}
5743	}
5744
5745	#ifdef LIBXML_TREE_ENABLED
5746	/**
5747	* xmlNodeSetContentLen:
5748	* @cur: the node being modified
5749	* @content: the new value of the content
5750	* @len: the size of @content
5751	*
5752	* Replace the content of a node.
5753	* NOTE: @content is supposed to be a piece of XML CDATA, so it allows entity
5754	* references, but XML special chars need to be escaped first by using
5755	* xmlEncodeEntitiesReentrant() resp. xmlEncodeSpecialChars().
5756	*/
5757	void
5758	xmlNodeSetContentLen(xmlNodePtr cur, const xmlChar *content, int len) {
5759	if (cur == NULL) {
5760	#ifdef DEBUG_TREE
5761	xmlGenericError(xmlGenericErrorContext,
5762	"xmlNodeSetContentLen : node == NULL\n");
5763	#endif
5764	return;
5765	}
5766	switch (cur->type) {
5767	case XML_DOCUMENT_FRAG_NODE:
5768	case XML_ELEMENT_NODE:
5769	case XML_ATTRIBUTE_NODE:
5770	if (cur->children != NULL) xmlFreeNodeList(cur->children);
5771	cur->children = xmlStringLenGetNodeList(cur->doc, content, len);
5772	UPDATE_LAST_CHILD_AND_PARENT(cur)
5773	break;
5774	case XML_TEXT_NODE:
5775	case XML_CDATA_SECTION_NODE:
5776	case XML_ENTITY_REF_NODE:
5777	case XML_ENTITY_NODE:
5778	case XML_PI_NODE:
5779	case XML_COMMENT_NODE:
5780	case XML_NOTATION_NODE:
5781	if ((cur->content != NULL) &&
5782	(cur->content != (xmlChar *) &(cur->properties))) {
5783	if (!((cur->doc != NULL) && (cur->doc->dict != NULL) &&
5784	(xmlDictOwns(cur->doc->dict, cur->content))))
5785	xmlFree(cur->content);
5786	}
5787	if (cur->children != NULL) xmlFreeNodeList(cur->children);
5788	cur->children = cur->last = NULL;
5789	if (content != NULL) {
5790	cur->content = xmlStrndup(content, len);
5791	} else
5792	cur->content = NULL;
5793	cur->properties = NULL;
5794	cur->nsDef = NULL;
5795	break;
5796	case XML_DOCUMENT_NODE:
5797	case XML_DTD_NODE:
5798	case XML_HTML_DOCUMENT_NODE:
5799	case XML_DOCUMENT_TYPE_NODE:
5800	case XML_NAMESPACE_DECL:
5801	case XML_XINCLUDE_START:
5802	case XML_XINCLUDE_END:
5803	#ifdef LIBXML_DOCB_ENABLED
5804	case XML_DOCB_DOCUMENT_NODE:
5805	#endif
5806	break;
5807	case XML_ELEMENT_DECL:
5808	/* TODO !!! */
5809	break;
5810	case XML_ATTRIBUTE_DECL:
5811	/* TODO !!! */
5812	break;
5813	case XML_ENTITY_DECL:
5814	/* TODO !!! */
5815	break;
5816	}
5817	}
5818	#endif /* LIBXML_TREE_ENABLED */
5819
5820	/**
5821	* xmlNodeAddContentLen:
5822	* @cur: the node being modified
5823	* @content: extra content
5824	* @len: the size of @content
5825	*
5826	* Append the extra substring to the node content.
5827	* NOTE: In contrast to xmlNodeSetContentLen(), @content is supposed to be
5828	* raw text, so unescaped XML special chars are allowed, entity
5829	* references are not supported.
5830	*/
5831	void
5832	xmlNodeAddContentLen(xmlNodePtr cur, const xmlChar *content, int len) {
5833	if (cur == NULL) {
5834	#ifdef DEBUG_TREE
5835	xmlGenericError(xmlGenericErrorContext,
5836	"xmlNodeAddContentLen : node == NULL\n");
5837	#endif
5838	return;
5839	}
5840	if (len <= 0) return;
5841	switch (cur->type) {
5842	case XML_DOCUMENT_FRAG_NODE:
5843	case XML_ELEMENT_NODE: {
5844	xmlNodePtr last, newNode, tmp;
5845
5846	last = cur->last;
5847	newNode = xmlNewTextLen(content, len);
5848	if (newNode != NULL) {
5849	tmp = xmlAddChild(cur, newNode);
5850	if (tmp != newNode)
5851	return;
5852	if ((last != NULL) && (last->next == newNode)) {
5853	xmlTextMerge(last, newNode);
5854	}
5855	}
5856	break;
5857	}
5858	case XML_ATTRIBUTE_NODE:
5859	break;
5860	case XML_TEXT_NODE:
5861	case XML_CDATA_SECTION_NODE:
5862	case XML_ENTITY_REF_NODE:
5863	case XML_ENTITY_NODE:
5864	case XML_PI_NODE:
5865	case XML_COMMENT_NODE:
5866	case XML_NOTATION_NODE:
5867	if (content != NULL) {
5868	if ((cur->content == (xmlChar *) &(cur->properties)) \|\|
5869	((cur->doc != NULL) && (cur->doc->dict != NULL) &&
5870	xmlDictOwns(cur->doc->dict, cur->content))) {
5871	cur->content = xmlStrncatNew(cur->content, content, len);
5872	cur->properties = NULL;
5873	cur->nsDef = NULL;
5874	break;
5875	}
5876	cur->content = xmlStrncat(cur->content, content, len);
5877	}
5878	case XML_DOCUMENT_NODE:
5879	case XML_DTD_NODE:
5880	case XML_HTML_DOCUMENT_NODE:
5881	case XML_DOCUMENT_TYPE_NODE:
5882	case XML_NAMESPACE_DECL:
5883	case XML_XINCLUDE_START:
5884	case XML_XINCLUDE_END:
5885	#ifdef LIBXML_DOCB_ENABLED
5886	case XML_DOCB_DOCUMENT_NODE:
5887	#endif
5888	break;
5889	case XML_ELEMENT_DECL:
5890	case XML_ATTRIBUTE_DECL:
5891	case XML_ENTITY_DECL:
5892	break;
5893	}
5894	}
5895
5896	/**
5897	* xmlNodeAddContent:
5898	* @cur: the node being modified
5899	* @content: extra content
5900	*
5901	* Append the extra substring to the node content.
5902	* NOTE: In contrast to xmlNodeSetContent(), @content is supposed to be
5903	* raw text, so unescaped XML special chars are allowed, entity
5904	* references are not supported.
5905	*/
5906	void
5907	xmlNodeAddContent(xmlNodePtr cur, const xmlChar *content) {
5908	int len;
5909
5910	if (cur == NULL) {
5911	#ifdef DEBUG_TREE
5912	xmlGenericError(xmlGenericErrorContext,
5913	"xmlNodeAddContent : node == NULL\n");
5914	#endif
5915	return;
5916	}
5917	if (content == NULL) return;
5918	len = xmlStrlen(content);
5919	xmlNodeAddContentLen(cur, content, len);
5920	}
5921
5922	/**
5923	* xmlTextMerge:
5924	* @first: the first text node
5925	* @second: the second text node being merged
5926	*
5927	* Merge two text nodes into one
5928	* Returns the first text node augmented
5929	*/
5930	xmlNodePtr
5931	xmlTextMerge(xmlNodePtr first, xmlNodePtr second) {
5932	if (first == NULL) return(second);
5933	if (second == NULL) return(first);
5934	if (first->type != XML_TEXT_NODE) return(first);
5935	if (second->type != XML_TEXT_NODE) return(first);
5936	if (second->name != first->name)
5937	return(first);
5938	xmlNodeAddContent(first, second->content);
5939	xmlUnlinkNode(second);
5940	xmlFreeNode(second);
5941	return(first);
5942	}
5943
5944	#if defined(LIBXML_TREE_ENABLED) \|\| defined(LIBXML_XPATH_ENABLED) \|\| defined(LIBXML_SCHEMAS_ENABLED)
5945	/**
5946	* xmlGetNsList:
5947	* @doc: the document
5948	* @node: the current node
5949	*
5950	* Search all the namespace applying to a given element.
5951	* Returns an NULL terminated array of all the #xmlNsPtr found
5952	* that need to be freed by the caller or NULL if no
5953	* namespace if defined
5954	*/
5955	xmlNsPtr *
5956	xmlGetNsList(const xmlDoc doc ATTRIBUTE_UNUSED, const xmlNode node)
5957	{
5958	xmlNsPtr cur;
5959	xmlNsPtr *ret = NULL;
5960	int nbns = 0;
5961	int maxns = 10;
5962	int i;
5963
5964	if ((node == NULL) \|\| (node->type == XML_NAMESPACE_DECL))
5965	return(NULL);
5966
5967	while (node != NULL) {
5968	if (node->type == XML_ELEMENT_NODE) {
5969	cur = node->nsDef;
5970	while (cur != NULL) {
5971	if (ret == NULL) {
5972	ret =
5973	(xmlNsPtr ) xmlMalloc((maxns + 1)
5974	sizeof(xmlNsPtr));
5975	if (ret == NULL) {
5976	xmlTreeErrMemory("getting namespace list");
5977	return (NULL);
5978	}
5979	ret[nbns] = NULL;
5980	}
5981	for (i = 0; i < nbns; i++) {
5982	if ((cur->prefix == ret[i]->prefix) \|\|
5983	(xmlStrEqual(cur->prefix, ret[i]->prefix)))
5984	break;
5985	}
5986	if (i >= nbns) {
5987	if (nbns >= maxns) {
5988	maxns *= 2;
5989	ret = (xmlNsPtr *) xmlRealloc(ret,
5990	(maxns +
5991	1) *
5992	sizeof(xmlNsPtr));
5993	if (ret == NULL) {
5994	xmlTreeErrMemory("getting namespace list");
5995	return (NULL);
5996	}
5997	}
5998	ret[nbns++] = cur;
5999	ret[nbns] = NULL;
6000	}
6001
6002	cur = cur->next;
6003	}
6004	}
6005	node = node->parent;
6006	}
6007	return (ret);
6008	}
6009	#endif /* LIBXML_TREE_ENABLED */
6010
6011	/*
6012	* xmlTreeEnsureXMLDecl:
6013	* @doc: the doc
6014	*
6015	* Ensures that there is an XML namespace declaration on the doc.
6016	*
6017	* Returns the XML ns-struct or NULL on API and internal errors.
6018	*/
6019	static xmlNsPtr
6020	xmlTreeEnsureXMLDecl(xmlDocPtr doc)
6021	{
6022	if (doc == NULL)
6023	return (NULL);
6024	if (doc->oldNs != NULL)
6025	return (doc->oldNs);
6026	{
6027	xmlNsPtr ns;
6028	ns = (xmlNsPtr) xmlMalloc(sizeof(xmlNs));
6029	if (ns == NULL) {
6030	xmlTreeErrMemory(
6031	"allocating the XML namespace");
6032	return (NULL);
6033	}
6034	memset(ns, 0, sizeof(xmlNs));
6035	ns->type = XML_LOCAL_NAMESPACE;
6036	ns->href = xmlStrdup(XML_XML_NAMESPACE);
6037	ns->prefix = xmlStrdup((const xmlChar *)"xml");
6038	doc->oldNs = ns;
6039	return (ns);
6040	}
6041	}
6042
6043	/**
6044	* xmlSearchNs:
6045	* @doc: the document
6046	* @node: the current node
6047	* @nameSpace: the namespace prefix
6048	*
6049	* Search a Ns registered under a given name space for a document.
6050	* recurse on the parents until it finds the defined namespace
6051	* or return NULL otherwise.
6052	* @nameSpace can be NULL, this is a search for the default namespace.
6053	* We don't allow to cross entities boundaries. If you don't declare
6054	* the namespace within those you will be in troubles !!! A warning
6055	* is generated to cover this case.
6056	*
6057	* Returns the namespace pointer or NULL.
6058	*/
6059	xmlNsPtr
6060	xmlSearchNs(xmlDocPtr doc, xmlNodePtr node, const xmlChar *nameSpace) {
6061
6062	xmlNsPtr cur;
6063	const xmlNode *orig = node;
6064
6065	if ((node == NULL) \|\| (node->type == XML_NAMESPACE_DECL)) return(NULL);
6066	if ((nameSpace != NULL) &&
6067	(xmlStrEqual(nameSpace, (const xmlChar *)"xml"))) {
6068	if ((doc == NULL) && (node->type == XML_ELEMENT_NODE)) {
6069	/*
6070	* The XML-1.0 namespace is normally held on the root
6071	* element. In this case exceptionally create it on the
6072	* node element.
6073	*/
6074	cur = (xmlNsPtr) xmlMalloc(sizeof(xmlNs));
6075	if (cur == NULL) {
6076	xmlTreeErrMemory("searching namespace");
6077	return(NULL);
6078	}
6079	memset(cur, 0, sizeof(xmlNs));
6080	cur->type = XML_LOCAL_NAMESPACE;
6081	cur->href = xmlStrdup(XML_XML_NAMESPACE);
6082	cur->prefix = xmlStrdup((const xmlChar *)"xml");
6083	cur->next = node->nsDef;
6084	node->nsDef = cur;
6085	return(cur);
6086	}
6087	if (doc == NULL) {
6088	doc = node->doc;
6089	if (doc == NULL)
6090	return(NULL);
6091	}
6092	/*
6093	* Return the XML namespace declaration held by the doc.
6094	*/
6095	if (doc->oldNs == NULL)
6096	return(xmlTreeEnsureXMLDecl(doc));
6097	else
6098	return(doc->oldNs);
6099	}
6100	while (node != NULL) {
6101	if ((node->type == XML_ENTITY_REF_NODE) \|\|
6102	(node->type == XML_ENTITY_NODE) \|\|
6103	(node->type == XML_ENTITY_DECL))
6104	return(NULL);
6105	if (node->type == XML_ELEMENT_NODE) {
6106	cur = node->nsDef;
6107	while (cur != NULL) {
6108	if ((cur->prefix == NULL) && (nameSpace == NULL) &&
6109	(cur->href != NULL))
6110	return(cur);
6111	if ((cur->prefix != NULL) && (nameSpace != NULL) &&
6112	(cur->href != NULL) &&
6113	(xmlStrEqual(cur->prefix, nameSpace)))
6114	return(cur);
6115	cur = cur->next;
6116	}
6117	if (orig != node) {
6118	cur = node->ns;
6119	if (cur != NULL) {
6120	if ((cur->prefix == NULL) && (nameSpace == NULL) &&
6121	(cur->href != NULL))
6122	return(cur);
6123	if ((cur->prefix != NULL) && (nameSpace != NULL) &&
6124	(cur->href != NULL) &&
6125	(xmlStrEqual(cur->prefix, nameSpace)))
6126	return(cur);
6127	}
6128	}
6129	}
6130	node = node->parent;
6131	}
6132	return(NULL);
6133	}
6134
6135	/**
6136	* xmlNsInScope:
6137	* @doc: the document
6138	* @node: the current node
6139	* @ancestor: the ancestor carrying the namespace
6140	* @prefix: the namespace prefix
6141	*
6142	* Verify that the given namespace held on @ancestor is still in scope
6143	* on node.
6144	*
6145	* Returns 1 if true, 0 if false and -1 in case of error.
6146	*/
6147	static int
6148	xmlNsInScope(xmlDocPtr doc ATTRIBUTE_UNUSED, xmlNodePtr node,
6149	xmlNodePtr ancestor, const xmlChar * prefix)
6150	{
6151	xmlNsPtr tst;
6152
6153	while ((node != NULL) && (node != ancestor)) {
6154	if ((node->type == XML_ENTITY_REF_NODE) \|\|
6155	(node->type == XML_ENTITY_NODE) \|\|
6156	(node->type == XML_ENTITY_DECL))
6157	return (-1);
6158	if (node->type == XML_ELEMENT_NODE) {
6159	tst = node->nsDef;
6160	while (tst != NULL) {
6161	if ((tst->prefix == NULL)
6162	&& (prefix == NULL))
6163	return (0);
6164	if ((tst->prefix != NULL)
6165	&& (prefix != NULL)
6166	&& (xmlStrEqual(tst->prefix, prefix)))
6167	return (0);
6168	tst = tst->next;
6169	}
6170	}
6171	node = node->parent;
6172	}
6173	if (node != ancestor)
6174	return (-1);
6175	return (1);
6176	}
6177
6178	/**
6179	* xmlSearchNsByHref:
6180	* @doc: the document
6181	* @node: the current node
6182	* @href: the namespace value
6183	*
6184	* Search a Ns aliasing a given URI. Recurse on the parents until it finds
6185	* the defined namespace or return NULL otherwise.
6186	* Returns the namespace pointer or NULL.
6187	*/
6188	xmlNsPtr
6189	xmlSearchNsByHref(xmlDocPtr doc, xmlNodePtr node, const xmlChar * href)
6190	{
6191	xmlNsPtr cur;
6192	xmlNodePtr orig = node;
6193	int is_attr;
6194
6195	if ((node == NULL) \|\| (node->type == XML_NAMESPACE_DECL) \|\| (href == NULL))
6196	return (NULL);
6197	if (xmlStrEqual(href, XML_XML_NAMESPACE)) {
6198	/*
6199	* Only the document can hold the XML spec namespace.
6200	*/
6201	if ((doc == NULL) && (node->type == XML_ELEMENT_NODE)) {
6202	/*
6203	* The XML-1.0 namespace is normally held on the root
6204	* element. In this case exceptionally create it on the
6205	* node element.
6206	*/
6207	cur = (xmlNsPtr) xmlMalloc(sizeof(xmlNs));
6208	if (cur == NULL) {
6209	xmlTreeErrMemory("searching namespace");
6210	return (NULL);
6211	}
6212	memset(cur, 0, sizeof(xmlNs));
6213	cur->type = XML_LOCAL_NAMESPACE;
6214	cur->href = xmlStrdup(XML_XML_NAMESPACE);
6215	cur->prefix = xmlStrdup((const xmlChar *) "xml");
6216	cur->next = node->nsDef;
6217	node->nsDef = cur;
6218	return (cur);
6219	}
6220	if (doc == NULL) {
6221	doc = node->doc;
6222	if (doc == NULL)
6223	return(NULL);
6224	}
6225	/*
6226	* Return the XML namespace declaration held by the doc.
6227	*/
6228	if (doc->oldNs == NULL)
6229	return(xmlTreeEnsureXMLDecl(doc));
6230	else
6231	return(doc->oldNs);
6232	}
6233	is_attr = (node->type == XML_ATTRIBUTE_NODE);
6234	while (node != NULL) {
6235	if ((node->type == XML_ENTITY_REF_NODE) \|\|
6236	(node->type == XML_ENTITY_NODE) \|\|
6237	(node->type == XML_ENTITY_DECL))
6238	return (NULL);
6239	if (node->type == XML_ELEMENT_NODE) {
6240	cur = node->nsDef;
6241	while (cur != NULL) {
6242	if ((cur->href != NULL) && (href != NULL) &&
6243	(xmlStrEqual(cur->href, href))) {
6244	if (((!is_attr) \|\| (cur->prefix != NULL)) &&
6245	(xmlNsInScope(doc, orig, node, cur->prefix) == 1))
6246	return (cur);
6247	}
6248	cur = cur->next;
6249	}
6250	if (orig != node) {
6251	cur = node->ns;
6252	if (cur != NULL) {
6253	if ((cur->href != NULL) && (href != NULL) &&
6254	(xmlStrEqual(cur->href, href))) {
6255	if (((!is_attr) \|\| (cur->prefix != NULL)) &&
6256	(xmlNsInScope(doc, orig, node, cur->prefix) == 1))
6257	return (cur);
6258	}
6259	}
6260	}
6261	}
6262	node = node->parent;
6263	}
6264	return (NULL);
6265	}
6266
6267	/**
6268	* xmlNewReconciledNs:
6269	* @doc: the document
6270	* @tree: a node expected to hold the new namespace
6271	* @ns: the original namespace
6272	*
6273	* This function tries to locate a namespace definition in a tree
6274	* ancestors, or create a new namespace definition node similar to
6275	* @ns trying to reuse the same prefix. However if the given prefix is
6276	* null (default namespace) or reused within the subtree defined by
6277	* @tree or on one of its ancestors then a new prefix is generated.
6278	* Returns the (new) namespace definition or NULL in case of error
6279	*/
6280	static xmlNsPtr
6281	xmlNewReconciledNs(xmlDocPtr doc, xmlNodePtr tree, xmlNsPtr ns) {
6282	xmlNsPtr def;
6283	xmlChar prefix[50];
6284	int counter = 1;
6285
6286	if ((tree == NULL) \|\| (tree->type != XML_ELEMENT_NODE)) {
6287	#ifdef DEBUG_TREE
6288	xmlGenericError(xmlGenericErrorContext,
6289	"xmlNewReconciledNs : tree == NULL\n");
6290	#endif
6291	return(NULL);
6292	}
6293	if ((ns == NULL) \|\| (ns->type != XML_NAMESPACE_DECL)) {
6294	#ifdef DEBUG_TREE
6295	xmlGenericError(xmlGenericErrorContext,
6296	"xmlNewReconciledNs : ns == NULL\n");
6297	#endif
6298	return(NULL);
6299	}
6300	/*
6301	* Search an existing namespace definition inherited.
6302	*/
6303	def = xmlSearchNsByHref(doc, tree, ns->href);
6304	if (def != NULL)
6305	return(def);
6306
6307	/*
6308	* Find a close prefix which is not already in use.
6309	* Let's strip namespace prefixes longer than 20 chars !
6310	*/
6311	if (ns->prefix == NULL)
6312	snprintf((char *) prefix, sizeof(prefix), "default");
6313	else
6314	snprintf((char ) prefix, sizeof(prefix), "%.20s", (char )ns->prefix);
6315
6316	def = xmlSearchNs(doc, tree, prefix);
6317	while (def != NULL) {
6318	if (counter > 1000) return(NULL);
6319	if (ns->prefix == NULL)
6320	snprintf((char *) prefix, sizeof(prefix), "default%d", counter++);
6321	else
6322	snprintf((char *) prefix, sizeof(prefix), "%.20s%d",
6323	(char *)ns->prefix, counter++);
6324	def = xmlSearchNs(doc, tree, prefix);
6325	}
6326
6327	/*
6328	* OK, now we are ready to create a new one.
6329	*/
6330	def = xmlNewNs(tree, ns->href, prefix);
6331	return(def);
6332	}
6333
6334	#ifdef LIBXML_TREE_ENABLED
6335	/**
6336	* xmlReconciliateNs:
6337	* @doc: the document
6338	* @tree: a node defining the subtree to reconciliate
6339	*
6340	* This function checks that all the namespaces declared within the given
6341	* tree are properly declared. This is needed for example after Copy or Cut
6342	* and then paste operations. The subtree may still hold pointers to
6343	* namespace declarations outside the subtree or invalid/masked. As much
6344	* as possible the function try to reuse the existing namespaces found in
6345	* the new environment. If not possible the new namespaces are redeclared
6346	* on @tree at the top of the given subtree.
6347	* Returns the number of namespace declarations created or -1 in case of error.
6348	*/
6349	int
6350	xmlReconciliateNs(xmlDocPtr doc, xmlNodePtr tree) {
6351	xmlNsPtr *oldNs = NULL;
6352	xmlNsPtr *newNs = NULL;
6353	int sizeCache = 0;
6354	int nbCache = 0;
6355
6356	xmlNsPtr n;
6357	xmlNodePtr node = tree;
6358	xmlAttrPtr attr;
6359	int ret = 0, i;
6360
6361	if ((node == NULL) \|\| (node->type != XML_ELEMENT_NODE)) return(-1);
6362	if ((doc == NULL) \|\| (doc->type != XML_DOCUMENT_NODE)) return(-1);
6363	if (node->doc != doc) return(-1);
6364	while (node != NULL) {
6365	/*
6366	* Reconciliate the node namespace
6367	*/
6368	if (node->ns != NULL) {
6369	/*
6370	* initialize the cache if needed
6371	*/
6372	if (sizeCache == 0) {
6373	sizeCache = 10;
6374	oldNs = (xmlNsPtr ) xmlMalloc(sizeCache
6375	sizeof(xmlNsPtr));
6376	if (oldNs == NULL) {
6377	xmlTreeErrMemory("fixing namespaces");
6378	return(-1);
6379	}
6380	newNs = (xmlNsPtr ) xmlMalloc(sizeCache
6381	sizeof(xmlNsPtr));
6382	if (newNs == NULL) {
6383	xmlTreeErrMemory("fixing namespaces");
6384	xmlFree(oldNs);
6385	return(-1);
6386	}
6387	}
6388	for (i = 0;i < nbCache;i++) {
6389	if (oldNs[i] == node->ns) {
6390	node->ns = newNs[i];
6391	break;
6392	}
6393	}
6394	if (i == nbCache) {
6395	/*
6396	* OK we need to recreate a new namespace definition
6397	*/
6398	n = xmlNewReconciledNs(doc, tree, node->ns);
6399	if (n != NULL) { /* :-( what if else ??? */
6400	/*
6401	* check if we need to grow the cache buffers.
6402	*/
6403	if (sizeCache <= nbCache) {
6404	sizeCache *= 2;
6405	oldNs = (xmlNsPtr ) xmlRealloc(oldNs, sizeCache
6406	sizeof(xmlNsPtr));
6407	if (oldNs == NULL) {
6408	xmlTreeErrMemory("fixing namespaces");
6409	xmlFree(newNs);
6410	return(-1);
6411	}
6412	newNs = (xmlNsPtr ) xmlRealloc(newNs, sizeCache
6413	sizeof(xmlNsPtr));
6414	if (newNs == NULL) {
6415	xmlTreeErrMemory("fixing namespaces");
6416	xmlFree(oldNs);
6417	return(-1);
6418	}
6419	}
6420	newNs[nbCache] = n;
6421	oldNs[nbCache++] = node->ns;
6422	node->ns = n;
6423	}
6424	}
6425	}
6426	/*
6427	* now check for namespace held by attributes on the node.
6428	*/
6429	if (node->type == XML_ELEMENT_NODE) {
6430	attr = node->properties;
6431	while (attr != NULL) {
6432	if (attr->ns != NULL) {
6433	/*
6434	* initialize the cache if needed
6435	*/
6436	if (sizeCache == 0) {
6437	sizeCache = 10;
6438	oldNs = (xmlNsPtr ) xmlMalloc(sizeCache
6439	sizeof(xmlNsPtr));
6440	if (oldNs == NULL) {
6441	xmlTreeErrMemory("fixing namespaces");
6442	return(-1);
6443	}
6444	newNs = (xmlNsPtr ) xmlMalloc(sizeCache
6445	sizeof(xmlNsPtr));
6446	if (newNs == NULL) {
6447	xmlTreeErrMemory("fixing namespaces");
6448	xmlFree(oldNs);
6449	return(-1);
6450	}
6451	}
6452	for (i = 0;i < nbCache;i++) {
6453	if (oldNs[i] == attr->ns) {
6454	attr->ns = newNs[i];
6455	break;
6456	}
6457	}
6458	if (i == nbCache) {
6459	/*
6460	* OK we need to recreate a new namespace definition
6461	*/
6462	n = xmlNewReconciledNs(doc, tree, attr->ns);
6463	if (n != NULL) { /* :-( what if else ??? */
6464	/*
6465	* check if we need to grow the cache buffers.
6466	*/
6467	if (sizeCache <= nbCache) {
6468	sizeCache *= 2;
6469	oldNs = (xmlNsPtr *) xmlRealloc(oldNs,
6470	sizeCache * sizeof(xmlNsPtr));
6471	if (oldNs == NULL) {
6472	xmlTreeErrMemory("fixing namespaces");
6473	xmlFree(newNs);
6474	return(-1);
6475	}
6476	newNs = (xmlNsPtr *) xmlRealloc(newNs,
6477	sizeCache * sizeof(xmlNsPtr));
6478	if (newNs == NULL) {
6479	xmlTreeErrMemory("fixing namespaces");
6480	xmlFree(oldNs);
6481	return(-1);
6482	}
6483	}
6484	newNs[nbCache] = n;
6485	oldNs[nbCache++] = attr->ns;
6486	attr->ns = n;
6487	}
6488	}
6489	}
6490	attr = attr->next;
6491	}
6492	}
6493
6494	/*
6495	* Browse the full subtree, deep first
6496	*/
6497	if ((node->children != NULL) && (node->type != XML_ENTITY_REF_NODE)) {
6498	/* deep first */
6499	node = node->children;
6500	} else if ((node != tree) && (node->next != NULL)) {
6501	/* then siblings */
6502	node = node->next;
6503	} else if (node != tree) {
6504	/* go up to parents->next if needed */
6505	while (node != tree) {
6506	if (node->parent != NULL)
6507	node = node->parent;
6508	if ((node != tree) && (node->next != NULL)) {
6509	node = node->next;
6510	break;
6511	}
6512	if (node->parent == NULL) {
6513	node = NULL;
6514	break;
6515	}
6516	}
6517	/* exit condition */
6518	if (node == tree)
6519	node = NULL;
6520	} else
6521	break;
6522	}
6523	if (oldNs != NULL)
6524	xmlFree(oldNs);
6525	if (newNs != NULL)
6526	xmlFree(newNs);
6527	return(ret);
6528	}
6529	#endif /* LIBXML_TREE_ENABLED */
6530
6531	static xmlAttrPtr
6532	xmlGetPropNodeInternal(const xmlNode node, const xmlChar name,
6533	const xmlChar *nsName, int useDTD)
6534	{
6535	xmlAttrPtr prop;
6536
6537	if ((node == NULL) \|\| (node->type != XML_ELEMENT_NODE) \|\| (name == NULL))
6538	return(NULL);
6539
6540	if (node->properties != NULL) {
6541	prop = node->properties;
6542	if (nsName == NULL) {
6543	/*
6544	* We want the attr to be in no namespace.
6545	*/
6546	do {
6547	if ((prop->ns == NULL) && xmlStrEqual(prop->name, name)) {
6548	return(prop);
6549	}
6550	prop = prop->next;
6551	} while (prop != NULL);
6552	} else {
6553	/*
6554	* We want the attr to be in the specified namespace.
6555	*/
6556	do {
6557	if ((prop->ns != NULL) && xmlStrEqual(prop->name, name) &&
6558	((prop->ns->href == nsName) \|\|
6559	xmlStrEqual(prop->ns->href, nsName)))
6560	{
6561	return(prop);
6562	}
6563	prop = prop->next;
6564	} while (prop != NULL);
6565	}
6566	}
6567
6568	#ifdef LIBXML_TREE_ENABLED
6569	if (! useDTD)
6570	return(NULL);
6571	/*
6572	* Check if there is a default/fixed attribute declaration in
6573	* the internal or external subset.
6574	*/
6575	if ((node->doc != NULL) && (node->doc->intSubset != NULL)) {
6576	xmlDocPtr doc = node->doc;
6577	xmlAttributePtr attrDecl = NULL;
6578	xmlChar elemQName, tmpstr = NULL;
6579
6580	/*
6581	* We need the QName of the element for the DTD-lookup.
6582	*/
6583	if ((node->ns != NULL) && (node->ns->prefix != NULL)) {
6584	tmpstr = xmlStrdup(node->ns->prefix);
6585	tmpstr = xmlStrcat(tmpstr, BAD_CAST ":");
6586	tmpstr = xmlStrcat(tmpstr, node->name);
6587	if (tmpstr == NULL)
6588	return(NULL);
6589	elemQName = tmpstr;
6590	} else
6591	elemQName = (xmlChar *) node->name;
6592	if (nsName == NULL) {
6593	/*
6594	* The common and nice case: Attr in no namespace.
6595	*/
6596	attrDecl = xmlGetDtdQAttrDesc(doc->intSubset,
6597	elemQName, name, NULL);
6598	if ((attrDecl == NULL) && (doc->extSubset != NULL)) {
6599	attrDecl = xmlGetDtdQAttrDesc(doc->extSubset,
6600	elemQName, name, NULL);
6601	}
6602	} else if (xmlStrEqual(nsName, XML_XML_NAMESPACE)) {
6603	/*
6604	* The XML namespace must be bound to prefix 'xml'.
6605	*/
6606	attrDecl = xmlGetDtdQAttrDesc(doc->intSubset,
6607	elemQName, name, BAD_CAST "xml");
6608	if ((attrDecl == NULL) && (doc->extSubset != NULL)) {
6609	attrDecl = xmlGetDtdQAttrDesc(doc->extSubset,
6610	elemQName, name, BAD_CAST "xml");
6611	}
6612	} else {
6613	xmlNsPtr nsList, cur;
6614
6615	/*
6616	* The ugly case: Search using the prefixes of in-scope
6617	* ns-decls corresponding to @nsName.
6618	*/
6619	nsList = xmlGetNsList(node->doc, node);
6620	if (nsList == NULL) {
6621	if (tmpstr != NULL)
6622	xmlFree(tmpstr);
6623	return(NULL);
6624	}
6625	cur = nsList;
6626	while (*cur != NULL) {
6627	if (xmlStrEqual((*cur)->href, nsName)) {
6628	attrDecl = xmlGetDtdQAttrDesc(doc->intSubset, elemQName,
6629	name, (*cur)->prefix);
6630	if (attrDecl)
6631	break;
6632	if (doc->extSubset != NULL) {
6633	attrDecl = xmlGetDtdQAttrDesc(doc->extSubset, elemQName,
6634	name, (*cur)->prefix);
6635	if (attrDecl)
6636	break;
6637	}
6638	}
6639	cur++;
6640	}
6641	xmlFree(nsList);
6642	}
6643	if (tmpstr != NULL)
6644	xmlFree(tmpstr);
6645	/*
6646	* Only default/fixed attrs are relevant.
6647	*/
6648	if ((attrDecl != NULL) && (attrDecl->defaultValue != NULL))
6649	return((xmlAttrPtr) attrDecl);
6650	}
6651	#endif /* LIBXML_TREE_ENABLED */
6652	return(NULL);
6653	}
6654
6655	static xmlChar*
6656	xmlGetPropNodeValueInternal(const xmlAttr *prop)
6657	{
6658	if (prop == NULL)
6659	return(NULL);
6660	if (prop->type == XML_ATTRIBUTE_NODE) {
6661	/*
6662	* Note that we return at least the empty string.
6663	* TODO: Do we really always want that?
6664	*/
6665	if (prop->children != NULL) {
6666	if ((prop->children->next == NULL) &&
6667	((prop->children->type == XML_TEXT_NODE) \|\|
6668	(prop->children->type == XML_CDATA_SECTION_NODE)))
6669	{
6670	/*
6671	* Optimization for the common case: only 1 text node.
6672	*/
6673	return(xmlStrdup(prop->children->content));
6674	} else {
6675	xmlChar *ret;
6676
6677	ret = xmlNodeListGetString(prop->doc, prop->children, 1);
6678	if (ret != NULL)
6679	return(ret);
6680	}
6681	}
6682	return(xmlStrdup((xmlChar *)""));
6683	} else if (prop->type == XML_ATTRIBUTE_DECL) {
6684	return(xmlStrdup(((xmlAttributePtr)prop)->defaultValue));
6685	}
6686	return(NULL);
6687	}
6688
6689	/**
6690	* xmlHasProp:
6691	* @node: the node
6692	* @name: the attribute name
6693	*
6694	* Search an attribute associated to a node
6695	* This function also looks in DTD attribute declaration for #FIXED or
6696	* default declaration values unless DTD use has been turned off.
6697	*
6698	* Returns the attribute or the attribute declaration or NULL if
6699	* neither was found.
6700	*/
6701	xmlAttrPtr
6702	xmlHasProp(const xmlNode node, const xmlChar name) {
6703	xmlAttrPtr prop;
6704	xmlDocPtr doc;
6705
6706	if ((node == NULL) \|\| (node->type != XML_ELEMENT_NODE) \|\| (name == NULL))
6707	return(NULL);
6708	/*
6709	* Check on the properties attached to the node
6710	*/
6711	prop = node->properties;
6712	while (prop != NULL) {
6713	if (xmlStrEqual(prop->name, name)) {
6714	return(prop);
6715	}
6716	prop = prop->next;
6717	}
6718	if (!xmlCheckDTD) return(NULL);
6719
6720	/*
6721	* Check if there is a default declaration in the internal
6722	* or external subsets
6723	*/
6724	doc = node->doc;
6725	if (doc != NULL) {
6726	xmlAttributePtr attrDecl;
6727	if (doc->intSubset != NULL) {
6728	attrDecl = xmlGetDtdAttrDesc(doc->intSubset, node->name, name);
6729	if ((attrDecl == NULL) && (doc->extSubset != NULL))
6730	attrDecl = xmlGetDtdAttrDesc(doc->extSubset, node->name, name);
6731	if ((attrDecl != NULL) && (attrDecl->defaultValue != NULL))
6732	/* return attribute declaration only if a default value is given
6733	(that includes #FIXED declarations) */
6734	return((xmlAttrPtr) attrDecl);
6735	}
6736	}
6737	return(NULL);
6738	}
6739
6740	/**
6741	* xmlHasNsProp:
6742	* @node: the node
6743	* @name: the attribute name
6744	* @nameSpace: the URI of the namespace
6745	*
6746	* Search for an attribute associated to a node
6747	* This attribute has to be anchored in the namespace specified.
6748	* This does the entity substitution.
6749	* This function looks in DTD attribute declaration for #FIXED or
6750	* default declaration values unless DTD use has been turned off.
6751	* Note that a namespace of NULL indicates to use the default namespace.
6752	*
6753	* Returns the attribute or the attribute declaration or NULL
6754	* if neither was found.
6755	*/
6756	xmlAttrPtr
6757	xmlHasNsProp(const xmlNode node, const xmlChar name, const xmlChar *nameSpace) {
6758
6759	return(xmlGetPropNodeInternal(node, name, nameSpace, xmlCheckDTD));
6760	}
6761
6762	/**
6763	* xmlGetProp:
6764	* @node: the node
6765	* @name: the attribute name
6766	*
6767	* Search and get the value of an attribute associated to a node
6768	* This does the entity substitution.
6769	* This function looks in DTD attribute declaration for #FIXED or
6770	* default declaration values unless DTD use has been turned off.
6771	* NOTE: this function acts independently of namespaces associated
6772	* to the attribute. Use xmlGetNsProp() or xmlGetNoNsProp()
6773	* for namespace aware processing.
6774	*
6775	* Returns the attribute value or NULL if not found.
6776	* It's up to the caller to free the memory with xmlFree().
6777	*/
6778	xmlChar *
6779	xmlGetProp(const xmlNode node, const xmlChar name) {
6780	xmlAttrPtr prop;
6781
6782	prop = xmlHasProp(node, name);
6783	if (prop == NULL)
6784	return(NULL);
6785	return(xmlGetPropNodeValueInternal(prop));
6786	}
6787
6788	/**
6789	* xmlGetNoNsProp:
6790	* @node: the node
6791	* @name: the attribute name
6792	*
6793	* Search and get the value of an attribute associated to a node
6794	* This does the entity substitution.
6795	* This function looks in DTD attribute declaration for #FIXED or
6796	* default declaration values unless DTD use has been turned off.
6797	* This function is similar to xmlGetProp except it will accept only
6798	* an attribute in no namespace.
6799	*
6800	* Returns the attribute value or NULL if not found.
6801	* It's up to the caller to free the memory with xmlFree().
6802	*/
6803	xmlChar *
6804	xmlGetNoNsProp(const xmlNode node, const xmlChar name) {
6805	xmlAttrPtr prop;
6806
6807	prop = xmlGetPropNodeInternal(node, name, NULL, xmlCheckDTD);
6808	if (prop == NULL)
6809	return(NULL);
6810	return(xmlGetPropNodeValueInternal(prop));
6811	}
6812
6813	/**
6814	* xmlGetNsProp:
6815	* @node: the node
6816	* @name: the attribute name
6817	* @nameSpace: the URI of the namespace
6818	*
6819	* Search and get the value of an attribute associated to a node
6820	* This attribute has to be anchored in the namespace specified.
6821	* This does the entity substitution.
6822	* This function looks in DTD attribute declaration for #FIXED or
6823	* default declaration values unless DTD use has been turned off.
6824	*
6825	* Returns the attribute value or NULL if not found.
6826	* It's up to the caller to free the memory with xmlFree().
6827	*/
6828	xmlChar *
6829	xmlGetNsProp(const xmlNode node, const xmlChar name, const xmlChar *nameSpace) {
6830	xmlAttrPtr prop;
6831
6832	prop = xmlGetPropNodeInternal(node, name, nameSpace, xmlCheckDTD);
6833	if (prop == NULL)
6834	return(NULL);
6835	return(xmlGetPropNodeValueInternal(prop));
6836	}
6837
6838	#if defined(LIBXML_TREE_ENABLED) \|\| defined(LIBXML_SCHEMAS_ENABLED)
6839	/**
6840	* xmlUnsetProp:
6841	* @node: the node
6842	* @name: the attribute name
6843	*
6844	* Remove an attribute carried by a node.
6845	* This handles only attributes in no namespace.
6846	* Returns 0 if successful, -1 if not found
6847	*/
6848	int
6849	xmlUnsetProp(xmlNodePtr node, const xmlChar *name) {
6850	xmlAttrPtr prop;
6851
6852	prop = xmlGetPropNodeInternal(node, name, NULL, 0);
6853	if (prop == NULL)
6854	return(-1);
6855	xmlUnlinkNode((xmlNodePtr) prop);
6856	xmlFreeProp(prop);
6857	return(0);
6858	}
6859
6860	/**
6861	* xmlUnsetNsProp:
6862	* @node: the node
6863	* @ns: the namespace definition
6864	* @name: the attribute name
6865	*
6866	* Remove an attribute carried by a node.
6867	* Returns 0 if successful, -1 if not found
6868	*/
6869	int
6870	xmlUnsetNsProp(xmlNodePtr node, xmlNsPtr ns, const xmlChar *name) {
6871	xmlAttrPtr prop;
6872
6873	prop = xmlGetPropNodeInternal(node, name, (ns != NULL) ? ns->href : NULL, 0);
6874	if (prop == NULL)
6875	return(-1);
6876	xmlUnlinkNode((xmlNodePtr) prop);
6877	xmlFreeProp(prop);
6878	return(0);
6879	}
6880	#endif
6881
6882	#if defined(LIBXML_TREE_ENABLED) \|\| defined(LIBXML_XINCLUDE_ENABLED) \|\| defined(LIBXML_SCHEMAS_ENABLED) \|\| defined(LIBXML_HTML_ENABLED)
6883	/**
6884	* xmlSetProp:
6885	* @node: the node
6886	* @name: the attribute name (a QName)
6887	* @value: the attribute value
6888	*
6889	* Set (or reset) an attribute carried by a node.
6890	* If @name has a prefix, then the corresponding
6891	* namespace-binding will be used, if in scope; it is an
6892	* error it there's no such ns-binding for the prefix in
6893	* scope.
6894	* Returns the attribute pointer.
6895	*
6896	*/
6897	xmlAttrPtr
6898	xmlSetProp(xmlNodePtr node, const xmlChar name, const xmlChar value) {
6899	int len;
6900	const xmlChar *nqname;
6901
6902	if ((node == NULL) \|\| (name == NULL) \|\| (node->type != XML_ELEMENT_NODE))
6903	return(NULL);
6904
6905	/*
6906	* handle QNames
6907	*/
6908	nqname = xmlSplitQName3(name, &len);
6909	if (nqname != NULL) {
6910	xmlNsPtr ns;
6911	xmlChar *prefix = xmlStrndup(name, len);
6912	ns = xmlSearchNs(node->doc, node, prefix);
6913	if (prefix != NULL)
6914	xmlFree(prefix);
6915	if (ns != NULL)
6916	return(xmlSetNsProp(node, ns, nqname, value));
6917	}
6918	return(xmlSetNsProp(node, NULL, name, value));
6919	}
6920
6921	/**
6922	* xmlSetNsProp:
6923	* @node: the node
6924	* @ns: the namespace definition
6925	* @name: the attribute name
6926	* @value: the attribute value
6927	*
6928	* Set (or reset) an attribute carried by a node.
6929	* The ns structure must be in scope, this is not checked
6930	*
6931	* Returns the attribute pointer.
6932	*/
6933	xmlAttrPtr
6934	xmlSetNsProp(xmlNodePtr node, xmlNsPtr ns, const xmlChar *name,
6935	const xmlChar *value)
6936	{
6937	xmlAttrPtr prop;
6938
6939	if (ns && (ns->href == NULL))
6940	return(NULL);
6941	prop = xmlGetPropNodeInternal(node, name, (ns != NULL) ? ns->href : NULL, 0);
6942	if (prop != NULL) {
6943	/*
6944	* Modify the attribute's value.
6945	*/
6946	if (prop->atype == XML_ATTRIBUTE_ID) {
6947	xmlRemoveID(node->doc, prop);
6948	prop->atype = XML_ATTRIBUTE_ID;
6949	}
6950	if (prop->children != NULL)
6951	xmlFreeNodeList(prop->children);
6952	prop->children = NULL;
6953	prop->last = NULL;
6954	prop->ns = ns;
6955	if (value != NULL) {
6956	xmlNodePtr tmp;
6957
6958	prop->children = xmlNewDocText(node->doc, value);
6959	prop->last = NULL;
6960	tmp = prop->children;
6961	while (tmp != NULL) {
6962	tmp->parent = (xmlNodePtr) prop;
6963	if (tmp->next == NULL)
6964	prop->last = tmp;
6965	tmp = tmp->next;
6966	}
6967	}
6968	if (prop->atype == XML_ATTRIBUTE_ID)
6969	xmlAddID(NULL, node->doc, value, prop);
6970	return(prop);
6971	}
6972	/*
6973	* No equal attr found; create a new one.
6974	*/
6975	return(xmlNewPropInternal(node, ns, name, value, 0));
6976	}
6977
6978	#endif /* LIBXML_TREE_ENABLED */
6979
6980	/**
6981	* xmlNodeIsText:
6982	* @node: the node
6983	*
6984	* Is this node a Text node ?
6985	* Returns 1 yes, 0 no
6986	*/
6987	int
6988	xmlNodeIsText(const xmlNode *node) {
6989	if (node == NULL) return(0);
6990
6991	if (node->type == XML_TEXT_NODE) return(1);
6992	return(0);
6993	}
6994
6995	/**
6996	* xmlIsBlankNode:
6997	* @node: the node
6998	*
6999	* Checks whether this node is an empty or whitespace only
7000	* (and possibly ignorable) text-node.
7001	*
7002	* Returns 1 yes, 0 no
7003	*/
7004	int
7005	xmlIsBlankNode(const xmlNode *node) {
7006	const xmlChar *cur;
7007	if (node == NULL) return(0);
7008
7009	if ((node->type != XML_TEXT_NODE) &&
7010	(node->type != XML_CDATA_SECTION_NODE))
7011	return(0);
7012	if (node->content == NULL) return(1);
7013	cur = node->content;
7014	while (*cur != 0) {
7015	if (!IS_BLANK_CH(*cur)) return(0);
7016	cur++;
7017	}
7018
7019	return(1);
7020	}
7021
7022	/**
7023	* xmlTextConcat:
7024	* @node: the node
7025	* @content: the content
7026	* @len: @content length
7027	*
7028	* Concat the given string at the end of the existing node content
7029	*
7030	* Returns -1 in case of error, 0 otherwise
7031	*/
7032
7033	int
7034	xmlTextConcat(xmlNodePtr node, const xmlChar *content, int len) {
7035	if (node == NULL) return(-1);
7036
7037	if ((node->type != XML_TEXT_NODE) &&
7038	(node->type != XML_CDATA_SECTION_NODE) &&
7039	(node->type != XML_COMMENT_NODE) &&
7040	(node->type != XML_PI_NODE)) {
7041	#ifdef DEBUG_TREE
7042	xmlGenericError(xmlGenericErrorContext,
7043	"xmlTextConcat: node is not text nor CDATA\n");
7044	#endif
7045	return(-1);
7046	}
7047	/* need to check if content is currently in the dictionary */
7048	if ((node->content == (xmlChar *) &(node->properties)) \|\|
7049	((node->doc != NULL) && (node->doc->dict != NULL) &&
7050	xmlDictOwns(node->doc->dict, node->content))) {
7051	node->content = xmlStrncatNew(node->content, content, len);
7052	} else {
7053	node->content = xmlStrncat(node->content, content, len);
7054	}
7055	node->properties = NULL;
7056	if (node->content == NULL)
7057	return(-1);
7058	return(0);
7059	}
7060
7061	/************************************************************************
7062	* *
7063	* Output : to a FILE or in memory *
7064	* *
7065	************************************************************************/
7066
7067	/**
7068	* xmlBufferCreate:
7069	*
7070	* routine to create an XML buffer.
7071	* returns the new structure.
7072	*/
7073	xmlBufferPtr
7074	xmlBufferCreate(void) {
7075	xmlBufferPtr ret;
7076
7077	ret = (xmlBufferPtr) xmlMalloc(sizeof(xmlBuffer));
7078	if (ret == NULL) {
7079	xmlTreeErrMemory("creating buffer");
7080	return(NULL);
7081	}
7082	ret->use = 0;
7083	ret->size = xmlDefaultBufferSize;
7084	ret->alloc = xmlBufferAllocScheme;
7085	ret->content = (xmlChar ) xmlMallocAtomic(ret->size sizeof(xmlChar));
7086	if (ret->content == NULL) {
7087	xmlTreeErrMemory("creating buffer");
7088	xmlFree(ret);
7089	return(NULL);
7090	}
7091	ret->content[0] = 0;
7092	ret->contentIO = NULL;
7093	return(ret);
7094	}
7095
7096	/**
7097	* xmlBufferCreateSize:
7098	* @size: initial size of buffer
7099	*
7100	* routine to create an XML buffer.
7101	* returns the new structure.
7102	*/
7103	xmlBufferPtr
7104	xmlBufferCreateSize(size_t size) {
7105	xmlBufferPtr ret;
7106
7107	if (size >= UINT_MAX)
7108	return(NULL);
7109	ret = (xmlBufferPtr) xmlMalloc(sizeof(xmlBuffer));
7110	if (ret == NULL) {
7111	xmlTreeErrMemory("creating buffer");
7112	return(NULL);
7113	}
7114	ret->use = 0;
7115	ret->alloc = xmlBufferAllocScheme;
7116	ret->size = (size ? size + 1 : 0); /* +1 for ending null */
7117	if (ret->size){
7118	ret->content = (xmlChar ) xmlMallocAtomic(ret->size sizeof(xmlChar));
7119	if (ret->content == NULL) {
7120	xmlTreeErrMemory("creating buffer");
7121	xmlFree(ret);
7122	return(NULL);
7123	}
7124	ret->content[0] = 0;
7125	} else
7126	ret->content = NULL;
7127	ret->contentIO = NULL;
7128	return(ret);
7129	}
7130
7131	/**
7132	* xmlBufferDetach:
7133	* @buf: the buffer
7134	*
7135	* Remove the string contained in a buffer and gie it back to the
7136	* caller. The buffer is reset to an empty content.
7137	* This doesn't work with immutable buffers as they can't be reset.
7138	*
7139	* Returns the previous string contained by the buffer.
7140	*/
7141	xmlChar *
7142	xmlBufferDetach(xmlBufferPtr buf) {
7143	xmlChar *ret;
7144
7145	if (buf == NULL)
7146	return(NULL);
7147	if (buf->alloc == XML_BUFFER_ALLOC_IMMUTABLE)
7148	return(NULL);
7149
7150	ret = buf->content;
7151	buf->content = NULL;
7152	buf->size = 0;
7153	buf->use = 0;
7154
7155	return ret;
7156	}
7157
7158
7159	/**
7160	* xmlBufferCreateStatic:
7161	* @mem: the memory area
7162	* @size: the size in byte
7163	*
7164	* routine to create an XML buffer from an immutable memory area.
7165	* The area won't be modified nor copied, and is expected to be
7166	* present until the end of the buffer lifetime.
7167	*
7168	* returns the new structure.
7169	*/
7170	xmlBufferPtr
7171	xmlBufferCreateStatic(void *mem, size_t size) {
7172	xmlBufferPtr ret;
7173
7174	if ((mem == NULL) \|\| (size == 0))
7175	return(NULL);
7176	if (size > UINT_MAX)
7177	return(NULL);
7178
7179	ret = (xmlBufferPtr) xmlMalloc(sizeof(xmlBuffer));
7180	if (ret == NULL) {
7181	xmlTreeErrMemory("creating buffer");
7182	return(NULL);
7183	}
7184	ret->use = size;
7185	ret->size = size;
7186	ret->alloc = XML_BUFFER_ALLOC_IMMUTABLE;
7187	ret->content = (xmlChar *) mem;
7188	return(ret);
7189	}
7190
7191	/**
7192	* xmlBufferSetAllocationScheme:
7193	* @buf: the buffer to tune
7194	* @scheme: allocation scheme to use
7195	*
7196	* Sets the allocation scheme for this buffer
7197	*/
7198	void
7199	xmlBufferSetAllocationScheme(xmlBufferPtr buf,
7200	xmlBufferAllocationScheme scheme) {
7201	if (buf == NULL) {
7202	#ifdef DEBUG_BUFFER
7203	xmlGenericError(xmlGenericErrorContext,
7204	"xmlBufferSetAllocationScheme: buf == NULL\n");
7205	#endif
7206	return;
7207	}
7208	if ((buf->alloc == XML_BUFFER_ALLOC_IMMUTABLE) \|\|
7209	(buf->alloc == XML_BUFFER_ALLOC_IO)) return;
7210	if ((scheme == XML_BUFFER_ALLOC_DOUBLEIT) \|\|
7211	(scheme == XML_BUFFER_ALLOC_EXACT) \|\|
7212	(scheme == XML_BUFFER_ALLOC_HYBRID) \|\|
7213	(scheme == XML_BUFFER_ALLOC_IMMUTABLE))
7214	buf->alloc = scheme;
7215	}
7216
7217	/**
7218	* xmlBufferFree:
7219	* @buf: the buffer to free
7220	*
7221	* Frees an XML buffer. It frees both the content and the structure which
7222	* encapsulate it.
7223	*/
7224	void
7225	xmlBufferFree(xmlBufferPtr buf) {
7226	if (buf == NULL) {
7227	#ifdef DEBUG_BUFFER
7228	xmlGenericError(xmlGenericErrorContext,
7229	"xmlBufferFree: buf == NULL\n");
7230	#endif
7231	return;
7232	}
7233
7234	if ((buf->alloc == XML_BUFFER_ALLOC_IO) &&
7235	(buf->contentIO != NULL)) {
7236	xmlFree(buf->contentIO);
7237	} else if ((buf->content != NULL) &&
7238	(buf->alloc != XML_BUFFER_ALLOC_IMMUTABLE)) {
7239	xmlFree(buf->content);
7240	}
7241	xmlFree(buf);
7242	}
7243
7244	/**
7245	* xmlBufferEmpty:
7246	* @buf: the buffer
7247	*
7248	* empty a buffer.
7249	*/
7250	void
7251	xmlBufferEmpty(xmlBufferPtr buf) {
7252	if (buf == NULL) return;
7253	if (buf->content == NULL) return;
7254	buf->use = 0;
7255	if (buf->alloc == XML_BUFFER_ALLOC_IMMUTABLE) {
7256	buf->content = BAD_CAST "";
7257	} else if ((buf->alloc == XML_BUFFER_ALLOC_IO) &&
7258	(buf->contentIO != NULL)) {
7259	size_t start_buf = buf->content - buf->contentIO;
7260
7261	buf->size += start_buf;
7262	buf->content = buf->contentIO;
7263	buf->content[0] = 0;
7264	} else {
7265	buf->content[0] = 0;
7266	}
7267	}
7268
7269	/**
7270	* xmlBufferShrink:
7271	* @buf: the buffer to dump
7272	* @len: the number of xmlChar to remove
7273	*
7274	* Remove the beginning of an XML buffer.
7275	*
7276	* Returns the number of #xmlChar removed, or -1 in case of failure.
7277	*/
7278	int
7279	xmlBufferShrink(xmlBufferPtr buf, unsigned int len) {
7280	if (buf == NULL) return(-1);
7281	if (len == 0) return(0);
7282	if (len > buf->use) return(-1);
7283
7284	buf->use -= len;
7285	if ((buf->alloc == XML_BUFFER_ALLOC_IMMUTABLE) \|\|
7286	((buf->alloc == XML_BUFFER_ALLOC_IO) && (buf->contentIO != NULL))) {
7287	/*
7288	* we just move the content pointer, but also make sure
7289	* the perceived buffer size has shrunk accordingly
7290	*/
7291	buf->content += len;
7292	buf->size -= len;
7293
7294	/*
7295	* sometimes though it maybe be better to really shrink
7296	* on IO buffers
7297	*/
7298	if ((buf->alloc == XML_BUFFER_ALLOC_IO) && (buf->contentIO != NULL)) {
7299	size_t start_buf = buf->content - buf->contentIO;
7300	if (start_buf >= buf->size) {
7301	memmove(buf->contentIO, &buf->content[0], buf->use);
7302	buf->content = buf->contentIO;
7303	buf->content[buf->use] = 0;
7304	buf->size += start_buf;
7305	}
7306	}
7307	} else {
7308	memmove(buf->content, &buf->content[len], buf->use);
7309	buf->content[buf->use] = 0;
7310	}
7311	return(len);
7312	}
7313
7314	/**
7315	* xmlBufferGrow:
7316	* @buf: the buffer
7317	* @len: the minimum free size to allocate
7318	*
7319	* Grow the available space of an XML buffer.
7320	*
7321	* Returns the new available space or -1 in case of error
7322	*/
7323	int
7324	xmlBufferGrow(xmlBufferPtr buf, unsigned int len) {
7325	unsigned int size;
7326	xmlChar *newbuf;
7327
7328	if (buf == NULL) return(-1);
7329
7330	if (buf->alloc == XML_BUFFER_ALLOC_IMMUTABLE) return(0);
7331	if (len < buf->size - buf->use)
7332	return(0);
7333	if (len > UINT_MAX - buf->use)
7334	return(-1);
7335
7336	if (buf->size > (size_t) len) {
7337	size = buf->size > UINT_MAX / 2 ? UINT_MAX : buf->size * 2;
7338	} else {
7339	size = buf->use + len;
7340	size = size > UINT_MAX - 100 ? UINT_MAX : size + 100;
7341	}
7342
7343	if ((buf->alloc == XML_BUFFER_ALLOC_IO) && (buf->contentIO != NULL)) {
7344	size_t start_buf = buf->content - buf->contentIO;
7345
7346	newbuf = (xmlChar *) xmlRealloc(buf->contentIO, start_buf + size);
7347	if (newbuf == NULL) {
7348	xmlTreeErrMemory("growing buffer");
7349	return(-1);
7350	}
7351	buf->contentIO = newbuf;
7352	buf->content = newbuf + start_buf;
7353	} else {
7354	newbuf = (xmlChar *) xmlRealloc(buf->content, size);
7355	if (newbuf == NULL) {
7356	xmlTreeErrMemory("growing buffer");
7357	return(-1);
7358	}
7359	buf->content = newbuf;
7360	}
7361	buf->size = size;
7362	return(buf->size - buf->use);
7363	}
7364
7365	/**
7366	* xmlBufferDump:
7367	* @file: the file output
7368	* @buf: the buffer to dump
7369	*
7370	* Dumps an XML buffer to a FILE *.
7371	* Returns the number of #xmlChar written
7372	*/
7373	int
7374	xmlBufferDump(FILE *file, xmlBufferPtr buf) {
7375	int ret;
7376
7377	if (buf == NULL) {
7378	#ifdef DEBUG_BUFFER
7379	xmlGenericError(xmlGenericErrorContext,
7380	"xmlBufferDump: buf == NULL\n");
7381	#endif
7382	return(0);
7383	}
7384	if (buf->content == NULL) {
7385	#ifdef DEBUG_BUFFER
7386	xmlGenericError(xmlGenericErrorContext,
7387	"xmlBufferDump: buf->content == NULL\n");
7388	#endif
7389	return(0);
7390	}
7391	if (file == NULL)
7392	file = stdout;
7393	ret = fwrite(buf->content, sizeof(xmlChar), buf->use, file);
7394	return(ret);
7395	}
7396
7397	/**
7398	* xmlBufferContent:
7399	* @buf: the buffer
7400	*
7401	* Function to extract the content of a buffer
7402	*
7403	* Returns the internal content
7404	*/
7405
7406	const xmlChar *
7407	xmlBufferContent(const xmlBuffer *buf)
7408	{
7409	if(!buf)
7410	return NULL;
7411
7412	return buf->content;
7413	}
7414
7415	/**
7416	* xmlBufferLength:
7417	* @buf: the buffer
7418	*
7419	* Function to get the length of a buffer
7420	*
7421	* Returns the length of data in the internal content
7422	*/
7423
7424	int
7425	xmlBufferLength(const xmlBuffer *buf)
7426	{
7427	if(!buf)
7428	return 0;
7429
7430	return buf->use;
7431	}
7432
7433	/**
7434	* xmlBufferResize:
7435	* @buf: the buffer to resize
7436	* @size: the desired size
7437	*
7438	* Resize a buffer to accommodate minimum size of @size.
7439	*
7440	* Returns 0 in case of problems, 1 otherwise
7441	*/
7442	int
7443	xmlBufferResize(xmlBufferPtr buf, unsigned int size)
7444	{
7445	unsigned int newSize;
7446	xmlChar* rebuf = NULL;
7447	size_t start_buf;
7448
7449	if (buf == NULL)
7450	return(0);
7451
7452	if (buf->alloc == XML_BUFFER_ALLOC_IMMUTABLE) return(0);
7453
7454	/* Don't resize if we don't have to */
7455	if (size < buf->size)
7456	return 1;
7457
7458	if (size > UINT_MAX - 10) {
7459	xmlTreeErrMemory("growing buffer");
7460	return 0;
7461	}
7462
7463	/* figure out new size */
7464	switch (buf->alloc){
7465	case XML_BUFFER_ALLOC_IO:
7466	case XML_BUFFER_ALLOC_DOUBLEIT:
7467	/take care of empty case/
7468	if (buf->size == 0)
7469	newSize = (size > UINT_MAX - 10 ? UINT_MAX : size + 10);
7470	else
7471	newSize = buf->size;
7472	while (size > newSize) {
7473	if (newSize > UINT_MAX / 2) {
7474	xmlTreeErrMemory("growing buffer");
7475	return 0;
7476	}
7477	newSize *= 2;
7478	}
7479	break;
7480	case XML_BUFFER_ALLOC_EXACT:
7481	newSize = (size > UINT_MAX - 10 ? UINT_MAX : size + 10);;
7482	break;
7483	case XML_BUFFER_ALLOC_HYBRID:
7484	if (buf->use < BASE_BUFFER_SIZE)
7485	newSize = size;
7486	else {
7487	newSize = buf->size;
7488	while (size > newSize) {
7489	if (newSize > UINT_MAX / 2) {
7490	xmlTreeErrMemory("growing buffer");
7491	return 0;
7492	}
7493	newSize *= 2;
7494	}
7495	}
7496	break;
7497
7498	default:
7499	newSize = (size > UINT_MAX - 10 ? UINT_MAX : size + 10);;
7500	break;
7501	}
7502
7503	if ((buf->alloc == XML_BUFFER_ALLOC_IO) && (buf->contentIO != NULL)) {
7504	start_buf = buf->content - buf->contentIO;
7505
7506	if (start_buf > newSize) {
7507	/* move data back to start */
7508	memmove(buf->contentIO, buf->content, buf->use);
7509	buf->content = buf->contentIO;
7510	buf->content[buf->use] = 0;
7511	buf->size += start_buf;
7512	} else {
7513	rebuf = (xmlChar *) xmlRealloc(buf->contentIO, start_buf + newSize);
7514	if (rebuf == NULL) {
7515	xmlTreeErrMemory("growing buffer");
7516	return 0;
7517	}
7518	buf->contentIO = rebuf;
7519	buf->content = rebuf + start_buf;
7520	}
7521	} else {
7522	if (buf->content == NULL) {
7523	rebuf = (xmlChar *) xmlMallocAtomic(newSize);
7524	} else if (buf->size - buf->use < 100) {
7525	rebuf = (xmlChar *) xmlRealloc(buf->content, newSize);
7526	} else {
7527	/*
7528	* if we are reallocating a buffer far from being full, it's
7529	* better to make a new allocation and copy only the used range
7530	* and free the old one.
7531	*/
7532	rebuf = (xmlChar *) xmlMallocAtomic(newSize);
7533	if (rebuf != NULL) {
7534	memcpy(rebuf, buf->content, buf->use);
7535	xmlFree(buf->content);
7536	rebuf[buf->use] = 0;
7537	}
7538	}
7539	if (rebuf == NULL) {
7540	xmlTreeErrMemory("growing buffer");
7541	return 0;
7542	}
7543	buf->content = rebuf;
7544	}
7545	buf->size = newSize;
7546
7547	return 1;
7548	}
7549
7550	/**
7551	* xmlBufferAdd:
7552	* @buf: the buffer to dump
7553	* @str: the #xmlChar string
7554	* @len: the number of #xmlChar to add
7555	*
7556	* Add a string range to an XML buffer. if len == -1, the length of
7557	* str is recomputed.
7558	*
7559	* Returns 0 successful, a positive error code number otherwise
7560	* and -1 in case of internal or API error.
7561	*/
7562	int
7563	xmlBufferAdd(xmlBufferPtr buf, const xmlChar *str, int len) {
7564	unsigned int needSize;
7565
7566	if ((str == NULL) \|\| (buf == NULL)) {
7567	return -1;
7568	}
7569	if (buf->alloc == XML_BUFFER_ALLOC_IMMUTABLE) return -1;
7570	if (len < -1) {
7571	#ifdef DEBUG_BUFFER
7572	xmlGenericError(xmlGenericErrorContext,
7573	"xmlBufferAdd: len < 0\n");
7574	#endif
7575	return -1;
7576	}
7577	if (len == 0) return 0;
7578
7579	if (len < 0)
7580	len = xmlStrlen(str);
7581
7582	if (len < 0) return -1;
7583	if (len == 0) return 0;
7584
7585	if ((unsigned) len >= buf->size - buf->use) {
7586	if ((unsigned) len >= UINT_MAX - buf->use)
7587	return XML_ERR_NO_MEMORY;
7588	needSize = buf->use + len + 1;
7589	if (!xmlBufferResize(buf, needSize)){
7590	xmlTreeErrMemory("growing buffer");
7591	return XML_ERR_NO_MEMORY;
7592	}
7593	}
7594
7595	memmove(&buf->content[buf->use], str, len*sizeof(xmlChar));
7596	buf->use += len;
7597	buf->content[buf->use] = 0;
7598	return 0;
7599	}
7600
7601	/**
7602	* xmlBufferAddHead:
7603	* @buf: the buffer
7604	* @str: the #xmlChar string
7605	* @len: the number of #xmlChar to add
7606	*
7607	* Add a string range to the beginning of an XML buffer.
7608	* if len == -1, the length of @str is recomputed.
7609	*
7610	* Returns 0 successful, a positive error code number otherwise
7611	* and -1 in case of internal or API error.
7612	*/
7613	int
7614	xmlBufferAddHead(xmlBufferPtr buf, const xmlChar *str, int len) {
7615	unsigned int needSize;
7616
7617	if (buf == NULL)
7618	return(-1);
7619	if (buf->alloc == XML_BUFFER_ALLOC_IMMUTABLE) return -1;
7620	if (str == NULL) {
7621	#ifdef DEBUG_BUFFER
7622	xmlGenericError(xmlGenericErrorContext,
7623	"xmlBufferAddHead: str == NULL\n");
7624	#endif
7625	return -1;
7626	}
7627	if (len < -1) {
7628	#ifdef DEBUG_BUFFER
7629	xmlGenericError(xmlGenericErrorContext,
7630	"xmlBufferAddHead: len < 0\n");
7631	#endif
7632	return -1;
7633	}
7634	if (len == 0) return 0;
7635
7636	if (len < 0)
7637	len = xmlStrlen(str);
7638
7639	if (len <= 0) return -1;
7640
7641	if ((buf->alloc == XML_BUFFER_ALLOC_IO) && (buf->contentIO != NULL)) {
7642	size_t start_buf = buf->content - buf->contentIO;
7643
7644	if (start_buf > (unsigned int) len) {
7645	/*
7646	* We can add it in the space previously shrunk
7647	*/
7648	buf->content -= len;
7649	memmove(&buf->content[0], str, len);
7650	buf->use += len;
7651	buf->size += len;
7652	return(0);
7653	}
7654	}
7655	needSize = buf->use + len + 2;
7656	if (needSize > buf->size){
7657	if (!xmlBufferResize(buf, needSize)){
7658	xmlTreeErrMemory("growing buffer");
7659	return XML_ERR_NO_MEMORY;
7660	}
7661	}
7662
7663	memmove(&buf->content[len], &buf->content[0], buf->use);
7664	memmove(&buf->content[0], str, len);
7665	buf->use += len;
7666	buf->content[buf->use] = 0;
7667	return 0;
7668	}
7669
7670	/**
7671	* xmlBufferCat:
7672	* @buf: the buffer to add to
7673	* @str: the #xmlChar string
7674	*
7675	* Append a zero terminated string to an XML buffer.
7676	*
7677	* Returns 0 successful, a positive error code number otherwise
7678	* and -1 in case of internal or API error.
7679	*/
7680	int
7681	xmlBufferCat(xmlBufferPtr buf, const xmlChar *str) {
7682	if (buf == NULL)
7683	return(-1);
7684	if (buf->alloc == XML_BUFFER_ALLOC_IMMUTABLE) return -1;
7685	if (str == NULL) return -1;
7686	return xmlBufferAdd(buf, str, -1);
7687	}
7688
7689	/**
7690	* xmlBufferCCat:
7691	* @buf: the buffer to dump
7692	* @str: the C char string
7693	*
7694	* Append a zero terminated C string to an XML buffer.
7695	*
7696	* Returns 0 successful, a positive error code number otherwise
7697	* and -1 in case of internal or API error.
7698	*/
7699	int
7700	xmlBufferCCat(xmlBufferPtr buf, const char *str) {
7701	return xmlBufferCat(buf, (const xmlChar *) str);
7702	}
7703
7704	/**
7705	* xmlBufferWriteCHAR:
7706	* @buf: the XML buffer
7707	* @string: the string to add
7708	*
7709	* routine which manages and grows an output buffer. This one adds
7710	* xmlChars at the end of the buffer.
7711	*/
7712	void
7713	xmlBufferWriteCHAR(xmlBufferPtr buf, const xmlChar *string) {
7714	if (buf == NULL)
7715	return;
7716	if (buf->alloc == XML_BUFFER_ALLOC_IMMUTABLE) return;
7717	xmlBufferCat(buf, string);
7718	}
7719
7720	/**
7721	* xmlBufferWriteChar:
7722	* @buf: the XML buffer output
7723	* @string: the string to add
7724	*
7725	* routine which manage and grows an output buffer. This one add
7726	* C chars at the end of the array.
7727	*/
7728	void
7729	xmlBufferWriteChar(xmlBufferPtr buf, const char *string) {
7730	if (buf == NULL)
7731	return;
7732	if (buf->alloc == XML_BUFFER_ALLOC_IMMUTABLE) return;
7733	xmlBufferCCat(buf, string);
7734	}
7735
7736
7737	/**
7738	* xmlBufferWriteQuotedString:
7739	* @buf: the XML buffer output
7740	* @string: the string to add
7741	*
7742	* routine which manage and grows an output buffer. This one writes
7743	* a quoted or double quoted #xmlChar string, checking first if it holds
7744	* quote or double-quotes internally
7745	*/
7746	void
7747	xmlBufferWriteQuotedString(xmlBufferPtr buf, const xmlChar *string) {
7748	const xmlChar cur, base;
7749	if (buf == NULL)
7750	return;
7751	if (buf->alloc == XML_BUFFER_ALLOC_IMMUTABLE) return;
7752	if (xmlStrchr(string, '\"')) {
7753	if (xmlStrchr(string, '\'')) {
7754	#ifdef DEBUG_BUFFER
7755	xmlGenericError(xmlGenericErrorContext,
7756	"xmlBufferWriteQuotedString: string contains quote and double-quotes !\n");
7757	#endif
7758	xmlBufferCCat(buf, "\"");
7759	base = cur = string;
7760	while(*cur != 0){
7761	if(*cur == '"'){
7762	if (base != cur)
7763	xmlBufferAdd(buf, base, cur - base);
7764	xmlBufferAdd(buf, BAD_CAST """, 6);
7765	cur++;
7766	base = cur;
7767	}
7768	else {
7769	cur++;
7770	}
7771	}
7772	if (base != cur)
7773	xmlBufferAdd(buf, base, cur - base);
7774	xmlBufferCCat(buf, "\"");
7775	}
7776	else{
7777	xmlBufferCCat(buf, "\'");
7778	xmlBufferCat(buf, string);
7779	xmlBufferCCat(buf, "\'");
7780	}
7781	} else {
7782	xmlBufferCCat(buf, "\"");
7783	xmlBufferCat(buf, string);
7784	xmlBufferCCat(buf, "\"");
7785	}
7786	}
7787
7788
7789	/**
7790	* xmlGetDocCompressMode:
7791	* @doc: the document
7792	*
7793	* get the compression ratio for a document, ZLIB based
7794	* Returns 0 (uncompressed) to 9 (max compression)
7795	*/
7796	int
7797	xmlGetDocCompressMode (const xmlDoc *doc) {
7798	if (doc == NULL) return(-1);
7799	return(doc->compression);
7800	}
7801
7802	/**
7803	* xmlSetDocCompressMode:
7804	* @doc: the document
7805	* @mode: the compression ratio
7806	*
7807	* set the compression ratio for a document, ZLIB based
7808	* Correct values: 0 (uncompressed) to 9 (max compression)
7809	*/
7810	void
7811	xmlSetDocCompressMode (xmlDocPtr doc, int mode) {
7812	if (doc == NULL) return;
7813	if (mode < 0) doc->compression = 0;
7814	else if (mode > 9) doc->compression = 9;
7815	else doc->compression = mode;
7816	}
7817
7818	/**
7819	* xmlGetCompressMode:
7820	*
7821	* get the default compression mode used, ZLIB based.
7822	* Returns 0 (uncompressed) to 9 (max compression)
7823	*/
7824	int
7825	xmlGetCompressMode(void)
7826	{
7827	return (xmlCompressMode);
7828	}
7829
7830	/**
7831	* xmlSetCompressMode:
7832	* @mode: the compression ratio
7833	*
7834	* set the default compression mode used, ZLIB based
7835	* Correct values: 0 (uncompressed) to 9 (max compression)
7836	*/
7837	void
7838	xmlSetCompressMode(int mode) {
7839	if (mode < 0) xmlCompressMode = 0;
7840	else if (mode > 9) xmlCompressMode = 9;
7841	else xmlCompressMode = mode;
7842	}
7843
7844	#define XML_TREE_NSMAP_PARENT -1
7845	#define XML_TREE_NSMAP_XML -2
7846	#define XML_TREE_NSMAP_DOC -3
7847	#define XML_TREE_NSMAP_CUSTOM -4
7848
7849	typedef struct xmlNsMapItem *xmlNsMapItemPtr;
7850	struct xmlNsMapItem {
7851	xmlNsMapItemPtr next;
7852	xmlNsMapItemPtr prev;
7853	xmlNsPtr oldNs; /* old ns decl reference */
7854	xmlNsPtr newNs; /* new ns decl reference */
7855	int shadowDepth; /* Shadowed at this depth */
7856	/*
7857	* depth:
7858	* >= 0 == @node's ns-decls
7859	* -1 == @parent's ns-decls
7860	* -2 == the doc->oldNs XML ns-decl
7861	* -3 == the doc->oldNs storage ns-decls
7862	* -4 == ns-decls provided via custom ns-handling
7863	*/
7864	int depth;
7865	};
7866
7867	typedef struct xmlNsMap *xmlNsMapPtr;
7868	struct xmlNsMap {
7869	xmlNsMapItemPtr first;
7870	xmlNsMapItemPtr last;
7871	xmlNsMapItemPtr pool;
7872	};
7873
7874	#define XML_NSMAP_NOTEMPTY(m) (((m) != NULL) && ((m)->first != NULL))
7875	#define XML_NSMAP_FOREACH(m, i) for (i = (m)->first; i != NULL; i = (i)->next)
7876	#define XML_NSMAP_POP(m, i) \
7877	i = (m)->last; \
7878	(m)->last = (i)->prev; \
7879	if ((m)->last == NULL) \
7880	(m)->first = NULL; \
7881	else \
7882	(m)->last->next = NULL; \
7883	(i)->next = (m)->pool; \
7884	(m)->pool = i;
7885
7886	/*
7887	* xmlDOMWrapNsMapFree:
7888	* @map: the ns-map
7889	*
7890	* Frees the ns-map
7891	*/
7892	static void
7893	xmlDOMWrapNsMapFree(xmlNsMapPtr nsmap)
7894	{
7895	xmlNsMapItemPtr cur, tmp;
7896
7897	if (nsmap == NULL)
7898	return;
7899	cur = nsmap->pool;
7900	while (cur != NULL) {
7901	tmp = cur;
7902	cur = cur->next;
7903	xmlFree(tmp);
7904	}
7905	cur = nsmap->first;
7906	while (cur != NULL) {
7907	tmp = cur;
7908	cur = cur->next;
7909	xmlFree(tmp);
7910	}
7911	xmlFree(nsmap);
7912	}
7913
7914	/*
7915	* xmlDOMWrapNsMapAddItem:
7916	* @map: the ns-map
7917	* @oldNs: the old ns-struct
7918	* @newNs: the new ns-struct
7919	* @depth: depth and ns-kind information
7920	*
7921	* Adds an ns-mapping item.
7922	*/
7923	static xmlNsMapItemPtr
7924	xmlDOMWrapNsMapAddItem(xmlNsMapPtr *nsmap, int position,
7925	xmlNsPtr oldNs, xmlNsPtr newNs, int depth)
7926	{
7927	xmlNsMapItemPtr ret;
7928	xmlNsMapPtr map;
7929
7930	if (nsmap == NULL)
7931	return(NULL);
7932	if ((position != -1) && (position != 0))
7933	return(NULL);
7934	map = *nsmap;
7935
7936	if (map == NULL) {
7937	/*
7938	* Create the ns-map.
7939	*/
7940	map = (xmlNsMapPtr) xmlMalloc(sizeof(struct xmlNsMap));
7941	if (map == NULL) {
7942	xmlTreeErrMemory("allocating namespace map");
7943	return (NULL);
7944	}
7945	memset(map, 0, sizeof(struct xmlNsMap));
7946	*nsmap = map;
7947	}
7948
7949	if (map->pool != NULL) {
7950	/*
7951	* Reuse an item from the pool.
7952	*/
7953	ret = map->pool;
7954	map->pool = ret->next;
7955	memset(ret, 0, sizeof(struct xmlNsMapItem));
7956	} else {
7957	/*
7958	* Create a new item.
7959	*/
7960	ret = (xmlNsMapItemPtr) xmlMalloc(sizeof(struct xmlNsMapItem));
7961	if (ret == NULL) {
7962	xmlTreeErrMemory("allocating namespace map item");
7963	return (NULL);
7964	}
7965	memset(ret, 0, sizeof(struct xmlNsMapItem));
7966	}
7967
7968	if (map->first == NULL) {
7969	/*
7970	* First ever.
7971	*/
7972	map->first = ret;
7973	map->last = ret;
7974	} else if (position == -1) {
7975	/*
7976	* Append.
7977	*/
7978	ret->prev = map->last;
7979	map->last->next = ret;
7980	map->last = ret;
7981	} else if (position == 0) {
7982	/*
7983	* Set on first position.
7984	*/
7985	map->first->prev = ret;
7986	ret->next = map->first;
7987	map->first = ret;
7988	}
7989
7990	ret->oldNs = oldNs;
7991	ret->newNs = newNs;
7992	ret->shadowDepth = -1;
7993	ret->depth = depth;
7994	return (ret);
7995	}
7996
7997	/*
7998	* xmlDOMWrapStoreNs:
7999	* @doc: the doc
8000	* @nsName: the namespace name
8001	* @prefix: the prefix
8002	*
8003	* Creates or reuses an xmlNs struct on doc->oldNs with
8004	* the given prefix and namespace name.
8005	*
8006	* Returns the acquired ns struct or NULL in case of an API
8007	* or internal error.
8008	*/
8009	static xmlNsPtr
8010	xmlDOMWrapStoreNs(xmlDocPtr doc,
8011	const xmlChar *nsName,
8012	const xmlChar *prefix)
8013	{
8014	xmlNsPtr ns;
8015
8016	if (doc == NULL)
8017	return (NULL);
8018	ns = xmlTreeEnsureXMLDecl(doc);
8019	if (ns == NULL)
8020	return (NULL);
8021	if (ns->next != NULL) {
8022	/* Reuse. */
8023	ns = ns->next;
8024	while (ns != NULL) {
8025	if (((ns->prefix == prefix) \|\|
8026	xmlStrEqual(ns->prefix, prefix)) &&
8027	xmlStrEqual(ns->href, nsName)) {
8028	return (ns);
8029	}
8030	if (ns->next == NULL)
8031	break;
8032	ns = ns->next;
8033	}
8034	}
8035	/* Create. */
8036	if (ns != NULL) {
8037	ns->next = xmlNewNs(NULL, nsName, prefix);
8038	return (ns->next);
8039	}
8040	return(NULL);
8041	}
8042
8043	/*
8044	* xmlDOMWrapNewCtxt:
8045	*
8046	* Allocates and initializes a new DOM-wrapper context.
8047	*
8048	* Returns the xmlDOMWrapCtxtPtr or NULL in case of an internal error.
8049	*/
8050	xmlDOMWrapCtxtPtr
8051	xmlDOMWrapNewCtxt(void)
8052	{
8053	xmlDOMWrapCtxtPtr ret;
8054
8055	ret = xmlMalloc(sizeof(xmlDOMWrapCtxt));
8056	if (ret == NULL) {
8057	xmlTreeErrMemory("allocating DOM-wrapper context");
8058	return (NULL);
8059	}
8060	memset(ret, 0, sizeof(xmlDOMWrapCtxt));
8061	return (ret);
8062	}
8063
8064	/*
8065	* xmlDOMWrapFreeCtxt:
8066	* @ctxt: the DOM-wrapper context
8067	*
8068	* Frees the DOM-wrapper context.
8069	*/
8070	void
8071	xmlDOMWrapFreeCtxt(xmlDOMWrapCtxtPtr ctxt)
8072	{
8073	if (ctxt == NULL)
8074	return;
8075	if (ctxt->namespaceMap != NULL)
8076	xmlDOMWrapNsMapFree((xmlNsMapPtr) ctxt->namespaceMap);
8077	/*
8078	* TODO: Store the namespace map in the context.
8079	*/
8080	xmlFree(ctxt);
8081	}
8082
8083	/*
8084	* xmlTreeLookupNsListByPrefix:
8085	* @nsList: a list of ns-structs
8086	* @prefix: the searched prefix
8087	*
8088	* Searches for a ns-decl with the given prefix in @nsList.
8089	*
8090	* Returns the ns-decl if found, NULL if not found and on
8091	* API errors.
8092	*/
8093	static xmlNsPtr
8094	xmlTreeNSListLookupByPrefix(xmlNsPtr nsList, const xmlChar *prefix)
8095	{
8096	if (nsList == NULL)
8097	return (NULL);
8098	{
8099	xmlNsPtr ns;
8100	ns = nsList;
8101	do {
8102	if ((prefix == ns->prefix) \|\|
8103	xmlStrEqual(prefix, ns->prefix)) {
8104	return (ns);
8105	}
8106	ns = ns->next;
8107	} while (ns != NULL);
8108	}
8109	return (NULL);
8110	}
8111
8112	/*
8113	*
8114	* xmlDOMWrapNSNormGatherInScopeNs:
8115	* @map: the namespace map
8116	* @node: the node to start with
8117	*
8118	* Puts in-scope namespaces into the ns-map.
8119	*
8120	* Returns 0 on success, -1 on API or internal errors.
8121	*/
8122	static int
8123	xmlDOMWrapNSNormGatherInScopeNs(xmlNsMapPtr *map,
8124	xmlNodePtr node)
8125	{
8126	xmlNodePtr cur;
8127	xmlNsPtr ns;
8128	xmlNsMapItemPtr mi;
8129	int shadowed;
8130
8131	if ((map == NULL) \|\| (*map != NULL))
8132	return (-1);
8133	if ((node == NULL) \|\| (node->type == XML_NAMESPACE_DECL))
8134	return (-1);
8135	/*
8136	* Get in-scope ns-decls of @parent.
8137	*/
8138	cur = node;
8139	while ((cur != NULL) && (cur != (xmlNodePtr) cur->doc)) {
8140	if (cur->type == XML_ELEMENT_NODE) {
8141	if (cur->nsDef != NULL) {
8142	ns = cur->nsDef;
8143	do {
8144	shadowed = 0;
8145	if (XML_NSMAP_NOTEMPTY(*map)) {
8146	/*
8147	* Skip shadowed prefixes.
8148	*/
8149	XML_NSMAP_FOREACH(*map, mi) {
8150	if ((ns->prefix == mi->newNs->prefix) \|\|
8151	xmlStrEqual(ns->prefix, mi->newNs->prefix)) {
8152	shadowed = 1;
8153	break;
8154	}
8155	}
8156	}
8157	/*
8158	* Insert mapping.
8159	*/
8160	mi = xmlDOMWrapNsMapAddItem(map, 0, NULL,
8161	ns, XML_TREE_NSMAP_PARENT);
8162	if (mi == NULL)
8163	return (-1);
8164	if (shadowed)
8165	mi->shadowDepth = 0;
8166	ns = ns->next;
8167	} while (ns != NULL);
8168	}
8169	}
8170	cur = cur->parent;
8171	}
8172	return (0);
8173	}
8174
8175	/*
8176	* XML_TREE_ADOPT_STR: If we have a dest-dict, put @str in the dict;
8177	* otherwise copy it, when it was in the source-dict.
8178	*/
8179	#define XML_TREE_ADOPT_STR(str) \
8180	if (adoptStr && (str != NULL)) { \
8181	if (destDoc->dict) { \
8182	const xmlChar *old = str; \
8183	str = xmlDictLookup(destDoc->dict, str, -1); \
8184	if ((sourceDoc == NULL) \|\| (sourceDoc->dict == NULL) \|\| \
8185	(!xmlDictOwns(sourceDoc->dict, old))) \
8186	xmlFree((char *)old); \
8187	} else if ((sourceDoc) && (sourceDoc->dict) && \
8188	xmlDictOwns(sourceDoc->dict, str)) { \
8189	str = BAD_CAST xmlStrdup(str); \
8190	} \
8191	}
8192
8193	/*
8194	* XML_TREE_ADOPT_STR_2: If @str was in the source-dict, then
8195	* put it in dest-dict or copy it.
8196	*/
8197	#define XML_TREE_ADOPT_STR_2(str) \
8198	if (adoptStr && (str != NULL) && (sourceDoc != NULL) && \
8199	(sourceDoc->dict != NULL) && \
8200	xmlDictOwns(sourceDoc->dict, cur->content)) { \
8201	if (destDoc->dict) \
8202	cur->content = (xmlChar *) \
8203	xmlDictLookup(destDoc->dict, cur->content, -1); \
8204	else \
8205	cur->content = xmlStrdup(BAD_CAST cur->content); \
8206	}
8207
8208	/*
8209	* xmlDOMWrapNSNormAddNsMapItem2:
8210	*
8211	* For internal use. Adds a ns-decl mapping.
8212	*
8213	* Returns 0 on success, -1 on internal errors.
8214	*/
8215	static int
8216	xmlDOMWrapNSNormAddNsMapItem2(xmlNsPtr *list, int size, int *number,
8217	xmlNsPtr oldNs, xmlNsPtr newNs)
8218	{
8219	if (*list == NULL) {
8220	list = (xmlNsPtr ) xmlMalloc(6 * sizeof(xmlNsPtr));
8221	if (*list == NULL) {
8222	xmlTreeErrMemory("alloc ns map item");
8223	return(-1);
8224	}
8225	*size = 3;
8226	*number = 0;
8227	} else if ((number) >= (size)) {
8228	size = 2;
8229	list = (xmlNsPtr ) xmlRealloc(*list,
8230	(size) 2 * sizeof(xmlNsPtr));
8231	if (*list == NULL) {
8232	xmlTreeErrMemory("realloc ns map item");
8233	return(-1);
8234	}
8235	}
8236	(list)[2 (*number)] = oldNs;
8237	(list)[2 (*number) +1] = newNs;
8238	(*number)++;
8239	return (0);
8240	}
8241
8242	/*
8243	* xmlDOMWrapRemoveNode:
8244	* @ctxt: a DOM wrapper context
8245	* @doc: the doc
8246	* @node: the node to be removed.
8247	* @options: set of options, unused at the moment
8248	*
8249	* Unlinks the given node from its owner.
8250	* This will substitute ns-references to node->nsDef for
8251	* ns-references to doc->oldNs, thus ensuring the removed
8252	* branch to be autark wrt ns-references.
8253	*
8254	* NOTE: This function was not intensively tested.
8255	*
8256	* Returns 0 on success, 1 if the node is not supported,
8257	* -1 on API and internal errors.
8258	*/
8259	int
8260	xmlDOMWrapRemoveNode(xmlDOMWrapCtxtPtr ctxt, xmlDocPtr doc,
8261	xmlNodePtr node, int options ATTRIBUTE_UNUSED)
8262	{
8263	xmlNsPtr *list = NULL;
8264	int sizeList, nbList, i, j;
8265	xmlNsPtr ns;
8266
8267	if ((node == NULL) \|\| (doc == NULL) \|\| (node->doc != doc))
8268	return (-1);
8269
8270	/* TODO: 0 or -1 ? */
8271	if (node->parent == NULL)
8272	return (0);
8273
8274	switch (node->type) {
8275	case XML_TEXT_NODE:
8276	case XML_CDATA_SECTION_NODE:
8277	case XML_ENTITY_REF_NODE:
8278	case XML_PI_NODE:
8279	case XML_COMMENT_NODE:
8280	xmlUnlinkNode(node);
8281	return (0);
8282	case XML_ELEMENT_NODE:
8283	case XML_ATTRIBUTE_NODE:
8284	break;
8285	default:
8286	return (1);
8287	}
8288	xmlUnlinkNode(node);
8289	/*
8290	* Save out-of-scope ns-references in doc->oldNs.
8291	*/
8292	do {
8293	switch (node->type) {
8294	case XML_ELEMENT_NODE:
8295	if ((ctxt == NULL) && (node->nsDef != NULL)) {
8296	ns = node->nsDef;
8297	do {
8298	if (xmlDOMWrapNSNormAddNsMapItem2(&list, &sizeList,
8299	&nbList, ns, ns) == -1)
8300	goto internal_error;
8301	ns = ns->next;
8302	} while (ns != NULL);
8303	}
8304	/* Falls through. */
8305	case XML_ATTRIBUTE_NODE:
8306	if (node->ns != NULL) {
8307	/*
8308	* Find a mapping.
8309	*/
8310	if (list != NULL) {
8311	for (i = 0, j = 0; i < nbList; i++, j += 2) {
8312	if (node->ns == list[j]) {
8313	node->ns = list[++j];
8314	goto next_node;
8315	}
8316	}
8317	}
8318	ns = NULL;
8319	if (ctxt != NULL) {
8320	/*
8321	* User defined.
8322	*/
8323	} else {
8324	/*
8325	* Add to doc's oldNs.
8326	*/
8327	ns = xmlDOMWrapStoreNs(doc, node->ns->href,
8328	node->ns->prefix);
8329	if (ns == NULL)
8330	goto internal_error;
8331	}
8332	if (ns != NULL) {
8333	/*
8334	* Add mapping.
8335	*/
8336	if (xmlDOMWrapNSNormAddNsMapItem2(&list, &sizeList,
8337	&nbList, node->ns, ns) == -1)
8338	goto internal_error;
8339	}
8340	node->ns = ns;
8341	}
8342	if ((node->type == XML_ELEMENT_NODE) &&
8343	(node->properties != NULL)) {
8344	node = (xmlNodePtr) node->properties;
8345	continue;
8346	}
8347	break;
8348	default:
8349	goto next_sibling;
8350	}
8351	next_node:
8352	if ((node->type == XML_ELEMENT_NODE) &&
8353	(node->children != NULL)) {
8354	node = node->children;
8355	continue;
8356	}
8357	next_sibling:
8358	if (node == NULL)
8359	break;
8360	if (node->next != NULL)
8361	node = node->next;
8362	else {
8363	node = node->parent;
8364	goto next_sibling;
8365	}
8366	} while (node != NULL);
8367
8368	if (list != NULL)
8369	xmlFree(list);
8370	return (0);
8371
8372	internal_error:
8373	if (list != NULL)
8374	xmlFree(list);
8375	return (-1);
8376	}
8377
8378	/*
8379	* xmlSearchNsByNamespaceStrict:
8380	* @doc: the document
8381	* @node: the start node
8382	* @nsName: the searched namespace name
8383	* @retNs: the resulting ns-decl
8384	* @prefixed: if the found ns-decl must have a prefix (for attributes)
8385	*
8386	* Dynamically searches for a ns-declaration which matches
8387	* the given @nsName in the ancestor-or-self axis of @node.
8388	*
8389	* Returns 1 if a ns-decl was found, 0 if not and -1 on API
8390	* and internal errors.
8391	*/
8392	static int
8393	xmlSearchNsByNamespaceStrict(xmlDocPtr doc, xmlNodePtr node,
8394	const xmlChar* nsName,
8395	xmlNsPtr *retNs, int prefixed)
8396	{
8397	xmlNodePtr cur, prev = NULL, out = NULL;
8398	xmlNsPtr ns, prevns;
8399
8400	if ((doc == NULL) \|\| (nsName == NULL) \|\| (retNs == NULL))
8401	return (-1);
8402	if ((node == NULL) \|\| (node->type == XML_NAMESPACE_DECL))
8403	return(-1);
8404
8405	*retNs = NULL;
8406	if (xmlStrEqual(nsName, XML_XML_NAMESPACE)) {
8407	*retNs = xmlTreeEnsureXMLDecl(doc);
8408	if (*retNs == NULL)
8409	return (-1);
8410	return (1);
8411	}
8412	cur = node;
8413	do {
8414	if (cur->type == XML_ELEMENT_NODE) {
8415	if (cur->nsDef != NULL) {
8416	for (ns = cur->nsDef; ns != NULL; ns = ns->next) {
8417	if (prefixed && (ns->prefix == NULL))
8418	continue;
8419	if (prev != NULL) {
8420	/*
8421	* Check the last level of ns-decls for a
8422	* shadowing prefix.
8423	*/
8424	prevns = prev->nsDef;
8425	do {
8426	if ((prevns->prefix == ns->prefix) \|\|
8427	((prevns->prefix != NULL) &&
8428	(ns->prefix != NULL) &&
8429	xmlStrEqual(prevns->prefix, ns->prefix))) {
8430	/*
8431	* Shadowed.
8432	*/
8433	break;
8434	}
8435	prevns = prevns->next;
8436	} while (prevns != NULL);
8437	if (prevns != NULL)
8438	continue;
8439	}
8440	/*
8441	* Ns-name comparison.
8442	*/
8443	if ((nsName == ns->href) \|\|
8444	xmlStrEqual(nsName, ns->href)) {
8445	/*
8446	* At this point the prefix can only be shadowed,
8447	* if we are the the (at least) 3rd level of
8448	* ns-decls.
8449	*/
8450	if (out) {
8451	int ret;
8452
8453	ret = xmlNsInScope(doc, node, prev, ns->prefix);
8454	if (ret < 0)
8455	return (-1);
8456	/*
8457	* TODO: Should we try to find a matching ns-name
8458	* only once? This here keeps on searching.
8459	* I think we should try further since, there might
8460	* be an other matching ns-decl with an unshadowed
8461	* prefix.
8462	*/
8463	if (! ret)
8464	continue;
8465	}
8466	*retNs = ns;
8467	return (1);
8468	}
8469	}
8470	out = prev;
8471	prev = cur;
8472	}
8473	} else if ((cur->type == XML_ENTITY_NODE) \|\|
8474	(cur->type == XML_ENTITY_DECL))
8475	return (0);
8476	cur = cur->parent;
8477	} while ((cur != NULL) && (cur->doc != (xmlDocPtr) cur));
8478	return (0);
8479	}
8480
8481	/*
8482	* xmlSearchNsByPrefixStrict:
8483	* @doc: the document
8484	* @node: the start node
8485	* @prefix: the searched namespace prefix
8486	* @retNs: the resulting ns-decl
8487	*
8488	* Dynamically searches for a ns-declaration which matches
8489	* the given @nsName in the ancestor-or-self axis of @node.
8490	*
8491	* Returns 1 if a ns-decl was found, 0 if not and -1 on API
8492	* and internal errors.
8493	*/
8494	static int
8495	xmlSearchNsByPrefixStrict(xmlDocPtr doc, xmlNodePtr node,
8496	const xmlChar* prefix,
8497	xmlNsPtr *retNs)
8498	{
8499	xmlNodePtr cur;
8500	xmlNsPtr ns;
8501
8502	if ((doc == NULL) \|\| (node == NULL) \|\| (node->type == XML_NAMESPACE_DECL))
8503	return(-1);
8504
8505	if (retNs)
8506	*retNs = NULL;
8507	if (IS_STR_XML(prefix)) {
8508	if (retNs) {
8509	*retNs = xmlTreeEnsureXMLDecl(doc);
8510	if (*retNs == NULL)
8511	return (-1);
8512	}
8513	return (1);
8514	}
8515	cur = node;
8516	do {
8517	if (cur->type == XML_ELEMENT_NODE) {
8518	if (cur->nsDef != NULL) {
8519	ns = cur->nsDef;
8520	do {
8521	if ((prefix == ns->prefix) \|\|
8522	xmlStrEqual(prefix, ns->prefix))
8523	{
8524	/*
8525	* Disabled namespaces, e.g. xmlns:abc="".
8526	*/
8527	if (ns->href == NULL)
8528	return(0);
8529	if (retNs)
8530	*retNs = ns;
8531	return (1);
8532	}
8533	ns = ns->next;
8534	} while (ns != NULL);
8535	}
8536	} else if ((cur->type == XML_ENTITY_NODE) \|\|
8537	(cur->type == XML_ENTITY_DECL))
8538	return (0);
8539	cur = cur->parent;
8540	} while ((cur != NULL) && (cur->doc != (xmlDocPtr) cur));
8541	return (0);
8542	}
8543
8544	/*
8545	* xmlDOMWrapNSNormDeclareNsForced:
8546	* @doc: the doc
8547	* @elem: the element-node to declare on
8548	* @nsName: the namespace-name of the ns-decl
8549	* @prefix: the preferred prefix of the ns-decl
8550	* @checkShadow: ensure that the new ns-decl doesn't shadow ancestor ns-decls
8551	*
8552	* Declares a new namespace on @elem. It tries to use the
8553	* given @prefix; if a ns-decl with the given prefix is already existent
8554	* on @elem, it will generate an other prefix.
8555	*
8556	* Returns 1 if a ns-decl was found, 0 if not and -1 on API
8557	* and internal errors.
8558	*/
8559	static xmlNsPtr
8560	xmlDOMWrapNSNormDeclareNsForced(xmlDocPtr doc,
8561	xmlNodePtr elem,
8562	const xmlChar *nsName,
8563	const xmlChar *prefix,
8564	int checkShadow)
8565	{
8566
8567	xmlNsPtr ret;
8568	char buf[50];
8569	const xmlChar *pref;
8570	int counter = 0;
8571
8572	if ((doc == NULL) \|\| (elem == NULL) \|\| (elem->type != XML_ELEMENT_NODE))
8573	return(NULL);
8574	/*
8575	* Create a ns-decl on @anchor.
8576	*/
8577	pref = prefix;
8578	while (1) {
8579	/*
8580	* Lookup whether the prefix is unused in elem's ns-decls.
8581	*/
8582	if ((elem->nsDef != NULL) &&
8583	(xmlTreeNSListLookupByPrefix(elem->nsDef, pref) != NULL))
8584	goto ns_next_prefix;
8585	if (checkShadow && elem->parent &&
8586	((xmlNodePtr) elem->parent->doc != elem->parent)) {
8587	/*
8588	* Does it shadow ancestor ns-decls?
8589	*/
8590	if (xmlSearchNsByPrefixStrict(doc, elem->parent, pref, NULL) == 1)
8591	goto ns_next_prefix;
8592	}
8593	ret = xmlNewNs(NULL, nsName, pref);
8594	if (ret == NULL)
8595	return (NULL);
8596	if (elem->nsDef == NULL)
8597	elem->nsDef = ret;
8598	else {
8599	xmlNsPtr ns2 = elem->nsDef;
8600	while (ns2->next != NULL)
8601	ns2 = ns2->next;
8602	ns2->next = ret;
8603	}
8604	return (ret);
8605	ns_next_prefix:
8606	counter++;
8607	if (counter > 1000)
8608	return (NULL);
8609	if (prefix == NULL) {
8610	snprintf((char *) buf, sizeof(buf),
8611	"ns_%d", counter);
8612	} else
8613	snprintf((char *) buf, sizeof(buf),
8614	"%.30s_%d", (char *)prefix, counter);
8615	pref = BAD_CAST buf;
8616	}
8617	}
8618
8619	/*
8620	* xmlDOMWrapNSNormAcquireNormalizedNs:
8621	* @doc: the doc
8622	* @elem: the element-node to declare namespaces on
8623	* @ns: the ns-struct to use for the search
8624	* @retNs: the found/created ns-struct
8625	* @nsMap: the ns-map
8626	* @depth: the current tree depth
8627	* @ancestorsOnly: search in ancestor ns-decls only
8628	* @prefixed: if the searched ns-decl must have a prefix (for attributes)
8629	*
8630	* Searches for a matching ns-name in the ns-decls of @nsMap, if not
8631	* found it will either declare it on @elem, or store it in doc->oldNs.
8632	* If a new ns-decl needs to be declared on @elem, it tries to use the
8633	* @ns->prefix for it, if this prefix is already in use on @elem, it will
8634	* change the prefix or the new ns-decl.
8635	*
8636	* Returns 0 if succeeded, -1 otherwise and on API/internal errors.
8637	*/
8638	static int
8639	xmlDOMWrapNSNormAcquireNormalizedNs(xmlDocPtr doc,
8640	xmlNodePtr elem,
8641	xmlNsPtr ns,
8642	xmlNsPtr *retNs,
8643	xmlNsMapPtr *nsMap,
8644
8645	int depth,
8646	int ancestorsOnly,
8647	int prefixed)
8648	{
8649	xmlNsMapItemPtr mi;
8650
8651	if ((doc == NULL) \|\| (ns == NULL) \|\| (retNs == NULL) \|\|
8652	(nsMap == NULL))
8653	return (-1);
8654
8655	*retNs = NULL;
8656	/*
8657	* Handle XML namespace.
8658	*/
8659	if (IS_STR_XML(ns->prefix)) {
8660	/*
8661	* Insert XML namespace mapping.
8662	*/
8663	*retNs = xmlTreeEnsureXMLDecl(doc);
8664	if (*retNs == NULL)
8665	return (-1);
8666	return (0);
8667	}
8668	/*
8669	* If the search should be done in ancestors only and no
8670	* @elem (the first ancestor) was specified, then skip the search.
8671	*/
8672	if ((XML_NSMAP_NOTEMPTY(*nsMap)) &&
8673	(! (ancestorsOnly && (elem == NULL))))
8674	{
8675	/*
8676	* Try to find an equal ns-name in in-scope ns-decls.
8677	*/
8678	XML_NSMAP_FOREACH(*nsMap, mi) {
8679	if ((mi->depth >= XML_TREE_NSMAP_PARENT) &&
8680	/*
8681	* ancestorsOnly: This should be turned on to gain speed,
8682	* if one knows that the branch itself was already
8683	* ns-wellformed and no stale references existed.
8684	* I.e. it searches in the ancestor axis only.
8685	*/
8686	((! ancestorsOnly) \|\| (mi->depth == XML_TREE_NSMAP_PARENT)) &&
8687	/* Skip shadowed prefixes. */
8688	(mi->shadowDepth == -1) &&
8689	/* Skip xmlns="" or xmlns:foo="". */
8690	((mi->newNs->href != NULL) &&
8691	(mi->newNs->href[0] != 0)) &&
8692	/* Ensure a prefix if wanted. */
8693	((! prefixed) \|\| (mi->newNs->prefix != NULL)) &&
8694	/* Equal ns name */
8695	((mi->newNs->href == ns->href) \|\|
8696	xmlStrEqual(mi->newNs->href, ns->href))) {
8697	/* Set the mapping. */
8698	mi->oldNs = ns;
8699	*retNs = mi->newNs;
8700	return (0);
8701	}
8702	}
8703	}
8704	/*
8705	* No luck, the namespace is out of scope or shadowed.
8706	*/
8707	if (elem == NULL) {
8708	xmlNsPtr tmpns;
8709
8710	/*
8711	* Store ns-decls in "oldNs" of the document-node.
8712	*/
8713	tmpns = xmlDOMWrapStoreNs(doc, ns->href, ns->prefix);
8714	if (tmpns == NULL)
8715	return (-1);
8716	/*
8717	* Insert mapping.
8718	*/
8719	if (xmlDOMWrapNsMapAddItem(nsMap, -1, ns,
8720	tmpns, XML_TREE_NSMAP_DOC) == NULL) {
8721	xmlFreeNs(tmpns);
8722	return (-1);
8723	}
8724	*retNs = tmpns;
8725	} else {
8726	xmlNsPtr tmpns;
8727
8728	tmpns = xmlDOMWrapNSNormDeclareNsForced(doc, elem, ns->href,
8729	ns->prefix, 0);
8730	if (tmpns == NULL)
8731	return (-1);
8732
8733	if (*nsMap != NULL) {
8734	/*
8735	* Does it shadow ancestor ns-decls?
8736	*/
8737	XML_NSMAP_FOREACH(*nsMap, mi) {
8738	if ((mi->depth < depth) &&
8739	(mi->shadowDepth == -1) &&
8740	((ns->prefix == mi->newNs->prefix) \|\|
8741	xmlStrEqual(ns->prefix, mi->newNs->prefix))) {
8742	/*
8743	* Shadows.
8744	*/
8745	mi->shadowDepth = depth;
8746	break;
8747	}
8748	}
8749	}
8750	if (xmlDOMWrapNsMapAddItem(nsMap, -1, ns, tmpns, depth) == NULL) {
8751	xmlFreeNs(tmpns);
8752	return (-1);
8753	}
8754	*retNs = tmpns;
8755	}
8756	return (0);
8757	}
8758
8759	typedef enum {
8760	XML_DOM_RECONNS_REMOVEREDUND = 1<<0
8761	} xmlDOMReconcileNSOptions;
8762
8763	/*
8764	* xmlDOMWrapReconcileNamespaces:
8765	* @ctxt: DOM wrapper context, unused at the moment
8766	* @elem: the element-node
8767	* @options: option flags
8768	*
8769	* Ensures that ns-references point to ns-decls hold on element-nodes.
8770	* Ensures that the tree is namespace wellformed by creating additional
8771	* ns-decls where needed. Note that, since prefixes of already existent
8772	* ns-decls can be shadowed by this process, it could break QNames in
8773	* attribute values or element content.
8774	*
8775	* NOTE: This function was not intensively tested.
8776	*
8777	* Returns 0 if succeeded, -1 otherwise and on API/internal errors.
8778	*/
8779
8780	int
8781	xmlDOMWrapReconcileNamespaces(xmlDOMWrapCtxtPtr ctxt ATTRIBUTE_UNUSED,
8782	xmlNodePtr elem,
8783	int options)
8784	{
8785	int depth = -1, adoptns = 0, parnsdone = 0;
8786	xmlNsPtr ns, prevns;
8787	xmlDocPtr doc;
8788	xmlNodePtr cur, curElem = NULL;
8789	xmlNsMapPtr nsMap = NULL;
8790	xmlNsMapItemPtr /* topmi = NULL, */ mi;
8791	/* @ancestorsOnly should be set by an option flag. */
8792	int ancestorsOnly = 0;
8793	int optRemoveRedundantNS =
8794	((xmlDOMReconcileNSOptions) options & XML_DOM_RECONNS_REMOVEREDUND) ? 1 : 0;
8795	xmlNsPtr *listRedund = NULL;
8796	int sizeRedund = 0, nbRedund = 0, ret, i, j;
8797
8798	if ((elem == NULL) \|\| (elem->doc == NULL) \|\|
8799	(elem->type != XML_ELEMENT_NODE))
8800	return (-1);
8801
8802	doc = elem->doc;
8803	cur = elem;
8804	do {
8805	switch (cur->type) {
8806	case XML_ELEMENT_NODE:
8807	adoptns = 1;
8808	curElem = cur;
8809	depth++;
8810	/*
8811	* Namespace declarations.
8812	*/
8813	if (cur->nsDef != NULL) {
8814	prevns = NULL;
8815	ns = cur->nsDef;
8816	while (ns != NULL) {
8817	if (! parnsdone) {
8818	if ((elem->parent) &&
8819	((xmlNodePtr) elem->parent->doc != elem->parent)) {
8820	/*
8821	* Gather ancestor in-scope ns-decls.
8822	*/
8823	if (xmlDOMWrapNSNormGatherInScopeNs(&nsMap,
8824	elem->parent) == -1)
8825	goto internal_error;
8826	}
8827	parnsdone = 1;
8828	}
8829
8830	/*
8831	* Lookup the ns ancestor-axis for equal ns-decls in scope.
8832	*/
8833	if (optRemoveRedundantNS && XML_NSMAP_NOTEMPTY(nsMap)) {
8834	XML_NSMAP_FOREACH(nsMap, mi) {
8835	if ((mi->depth >= XML_TREE_NSMAP_PARENT) &&
8836	(mi->shadowDepth == -1) &&
8837	((ns->prefix == mi->newNs->prefix) \|\|
8838	xmlStrEqual(ns->prefix, mi->newNs->prefix)) &&
8839	((ns->href == mi->newNs->href) \|\|
8840	xmlStrEqual(ns->href, mi->newNs->href)))
8841	{
8842	/*
8843	* A redundant ns-decl was found.
8844	* Add it to the list of redundant ns-decls.
8845	*/
8846	if (xmlDOMWrapNSNormAddNsMapItem2(&listRedund,
8847	&sizeRedund, &nbRedund, ns, mi->newNs) == -1)
8848	goto internal_error;
8849	/*
8850	* Remove the ns-decl from the element-node.
8851	*/
8852	if (prevns)
8853	prevns->next = ns->next;
8854	else
8855	cur->nsDef = ns->next;
8856	goto next_ns_decl;
8857	}
8858	}
8859	}
8860
8861	/*
8862	* Skip ns-references handling if the referenced
8863	* ns-decl is declared on the same element.
8864	*/
8865	if ((cur->ns != NULL) && adoptns && (cur->ns == ns))
8866	adoptns = 0;
8867	/*
8868	* Does it shadow any ns-decl?
8869	*/
8870	if (XML_NSMAP_NOTEMPTY(nsMap)) {
8871	XML_NSMAP_FOREACH(nsMap, mi) {
8872	if ((mi->depth >= XML_TREE_NSMAP_PARENT) &&
8873	(mi->shadowDepth == -1) &&
8874	((ns->prefix == mi->newNs->prefix) \|\|
8875	xmlStrEqual(ns->prefix, mi->newNs->prefix))) {
8876
8877	mi->shadowDepth = depth;
8878	}
8879	}
8880	}
8881	/*
8882	* Push mapping.
8883	*/
8884	if (xmlDOMWrapNsMapAddItem(&nsMap, -1, ns, ns,
8885	depth) == NULL)
8886	goto internal_error;
8887
8888	prevns = ns;
8889	next_ns_decl:
8890	ns = ns->next;
8891	}
8892	}
8893	if (! adoptns)
8894	goto ns_end;
8895	/* Falls through. */
8896	case XML_ATTRIBUTE_NODE:
8897	/* No ns, no fun. */
8898	if (cur->ns == NULL)
8899	goto ns_end;
8900
8901	if (! parnsdone) {
8902	if ((elem->parent) &&
8903	((xmlNodePtr) elem->parent->doc != elem->parent)) {
8904	if (xmlDOMWrapNSNormGatherInScopeNs(&nsMap,
8905	elem->parent) == -1)
8906	goto internal_error;
8907	}
8908	parnsdone = 1;
8909	}
8910	/*
8911	* Adjust the reference if this was a redundant ns-decl.
8912	*/
8913	if (listRedund) {
8914	for (i = 0, j = 0; i < nbRedund; i++, j += 2) {
8915	if (cur->ns == listRedund[j]) {
8916	cur->ns = listRedund[++j];
8917	break;
8918	}
8919	}
8920	}
8921	/*
8922	* Adopt ns-references.
8923	*/
8924	if (XML_NSMAP_NOTEMPTY(nsMap)) {
8925	/*
8926	* Search for a mapping.
8927	*/
8928	XML_NSMAP_FOREACH(nsMap, mi) {
8929	if ((mi->shadowDepth == -1) &&
8930	(cur->ns == mi->oldNs)) {
8931
8932	cur->ns = mi->newNs;
8933	goto ns_end;
8934	}
8935	}
8936	}
8937	/*
8938	* Acquire a normalized ns-decl and add it to the map.
8939	*/
8940	if (xmlDOMWrapNSNormAcquireNormalizedNs(doc, curElem,
8941	cur->ns, &ns,
8942	&nsMap, depth,
8943	ancestorsOnly,
8944	(cur->type == XML_ATTRIBUTE_NODE) ? 1 : 0) == -1)
8945	goto internal_error;
8946	cur->ns = ns;
8947
8948	ns_end:
8949	if ((cur->type == XML_ELEMENT_NODE) &&
8950	(cur->properties != NULL)) {
8951	/*
8952	* Process attributes.
8953	*/
8954	cur = (xmlNodePtr) cur->properties;
8955	continue;
8956	}
8957	break;
8958	default:
8959	goto next_sibling;
8960	}
8961	into_content:
8962	if ((cur->type == XML_ELEMENT_NODE) &&
8963	(cur->children != NULL)) {
8964	/*
8965	* Process content of element-nodes only.
8966	*/
8967	cur = cur->children;
8968	continue;
8969	}
8970	next_sibling:
8971	if (cur == elem)
8972	break;
8973	if (cur->type == XML_ELEMENT_NODE) {
8974	if (XML_NSMAP_NOTEMPTY(nsMap)) {
8975	/*
8976	* Pop mappings.
8977	*/
8978	while ((nsMap->last != NULL) &&
8979	(nsMap->last->depth >= depth))
8980	{
8981	XML_NSMAP_POP(nsMap, mi)
8982	}
8983	/*
8984	* Unshadow.
8985	*/
8986	XML_NSMAP_FOREACH(nsMap, mi) {
8987	if (mi->shadowDepth >= depth)
8988	mi->shadowDepth = -1;
8989	}
8990	}
8991	depth--;
8992	}
8993	if (cur->next != NULL)
8994	cur = cur->next;
8995	else {
8996	if (cur->type == XML_ATTRIBUTE_NODE) {
8997	cur = cur->parent;
8998	goto into_content;
8999	}
9000	cur = cur->parent;
9001	goto next_sibling;
9002	}
9003	} while (cur != NULL);
9004
9005	ret = 0;
9006	goto exit;
9007	internal_error:
9008	ret = -1;
9009	exit:
9010	if (listRedund) {
9011	for (i = 0, j = 0; i < nbRedund; i++, j += 2) {
9012	xmlFreeNs(listRedund[j]);
9013	}
9014	xmlFree(listRedund);
9015	}
9016	if (nsMap != NULL)
9017	xmlDOMWrapNsMapFree(nsMap);
9018	return (ret);
9019	}
9020
9021	/*
9022	* xmlDOMWrapAdoptBranch:
9023	* @ctxt: the optional context for custom processing
9024	* @sourceDoc: the optional sourceDoc
9025	* @node: the element-node to start with
9026	* @destDoc: the destination doc for adoption
9027	* @destParent: the optional new parent of @node in @destDoc
9028	* @options: option flags
9029	*
9030	* Ensures that ns-references point to @destDoc: either to
9031	* elements->nsDef entries if @destParent is given, or to
9032	* @destDoc->oldNs otherwise.
9033	* If @destParent is given, it ensures that the tree is namespace
9034	* wellformed by creating additional ns-decls where needed.
9035	* Note that, since prefixes of already existent ns-decls can be
9036	* shadowed by this process, it could break QNames in attribute
9037	* values or element content.
9038	*
9039	* NOTE: This function was not intensively tested.
9040	*
9041	* Returns 0 if succeeded, -1 otherwise and on API/internal errors.
9042	*/
9043	static int
9044	xmlDOMWrapAdoptBranch(xmlDOMWrapCtxtPtr ctxt,
9045	xmlDocPtr sourceDoc,
9046	xmlNodePtr node,
9047	xmlDocPtr destDoc,
9048	xmlNodePtr destParent,
9049	int options ATTRIBUTE_UNUSED)
9050	{
9051	int ret = 0;
9052	xmlNodePtr cur, curElem = NULL;
9053	xmlNsMapPtr nsMap = NULL;
9054	xmlNsMapItemPtr mi;
9055	xmlNsPtr ns = NULL;
9056	int depth = -1, adoptStr = 1;
9057	/* gather @parent's ns-decls. */
9058	int parnsdone;
9059	/* @ancestorsOnly should be set per option. */
9060	int ancestorsOnly = 0;
9061
9062	/*
9063	* Optimize string adoption for equal or none dicts.
9064	*/
9065	if ((sourceDoc != NULL) &&
9066	(sourceDoc->dict == destDoc->dict))
9067	adoptStr = 0;
9068	else
9069	adoptStr = 1;
9070
9071	/*
9072	* Get the ns-map from the context if available.
9073	*/
9074	if (ctxt)
9075	nsMap = (xmlNsMapPtr) ctxt->namespaceMap;
9076	/*
9077	* Disable search for ns-decls in the parent-axis of the
9078	* destination element, if:
9079	* 1) there's no destination parent
9080	* 2) custom ns-reference handling is used
9081	*/
9082	if ((destParent == NULL) \|\|
9083	(ctxt && ctxt->getNsForNodeFunc))
9084	{
9085	parnsdone = 1;
9086	} else
9087	parnsdone = 0;
9088
9089	cur = node;
9090	if ((cur != NULL) && (cur->type == XML_NAMESPACE_DECL))
9091	goto internal_error;
9092
9093	while (cur != NULL) {
9094	/*
9095	* Paranoid source-doc sanity check.
9096	*/
9097	if (cur->doc != sourceDoc) {
9098	/*
9099	* We'll assume XIncluded nodes if the doc differs.
9100	* TODO: Do we need to reconciliate XIncluded nodes?
9101	* This here skips XIncluded nodes and tries to handle
9102	* broken sequences.
9103	*/
9104	if (cur->next == NULL)
9105	goto leave_node;
9106	do {
9107	cur = cur->next;
9108	if ((cur->type == XML_XINCLUDE_END) \|\|
9109	(cur->doc == node->doc))
9110	break;
9111	} while (cur->next != NULL);
9112
9113	if (cur->doc != node->doc)
9114	goto leave_node;
9115	}
9116	cur->doc = destDoc;
9117	switch (cur->type) {
9118	case XML_XINCLUDE_START:
9119	case XML_XINCLUDE_END:
9120	/*
9121	* TODO
9122	*/
9123	return (-1);
9124	case XML_ELEMENT_NODE:
9125	curElem = cur;
9126	depth++;
9127	/*
9128	* Namespace declarations.
9129	* - ns->href and ns->prefix are never in the dict, so
9130	* we need not move the values over to the destination dict.
9131	* - Note that for custom handling of ns-references,
9132	* the ns-decls need not be stored in the ns-map,
9133	* since they won't be referenced by node->ns.
9134	*/
9135	if ((cur->nsDef) &&
9136	((ctxt == NULL) \|\| (ctxt->getNsForNodeFunc == NULL)))
9137	{
9138	if (! parnsdone) {
9139	/*
9140	* Gather @parent's in-scope ns-decls.
9141	*/
9142	if (xmlDOMWrapNSNormGatherInScopeNs(&nsMap,
9143	destParent) == -1)
9144	goto internal_error;
9145	parnsdone = 1;
9146	}
9147	for (ns = cur->nsDef; ns != NULL; ns = ns->next) {
9148	/*
9149	* NOTE: ns->prefix and ns->href are never in the dict.
9150	* XML_TREE_ADOPT_STR(ns->prefix)
9151	* XML_TREE_ADOPT_STR(ns->href)
9152	*/
9153	/*
9154	* Does it shadow any ns-decl?
9155	*/
9156	if (XML_NSMAP_NOTEMPTY(nsMap)) {
9157	XML_NSMAP_FOREACH(nsMap, mi) {
9158	if ((mi->depth >= XML_TREE_NSMAP_PARENT) &&
9159	(mi->shadowDepth == -1) &&
9160	((ns->prefix == mi->newNs->prefix) \|\|
9161	xmlStrEqual(ns->prefix,
9162	mi->newNs->prefix))) {
9163
9164	mi->shadowDepth = depth;
9165	}
9166	}
9167	}
9168	/*
9169	* Push mapping.
9170	*/
9171	if (xmlDOMWrapNsMapAddItem(&nsMap, -1,
9172	ns, ns, depth) == NULL)
9173	goto internal_error;
9174	}
9175	}
9176	/* Falls through. */
9177	case XML_ATTRIBUTE_NODE:
9178	/* No namespace, no fun. */
9179	if (cur->ns == NULL)
9180	goto ns_end;
9181
9182	if (! parnsdone) {
9183	if (xmlDOMWrapNSNormGatherInScopeNs(&nsMap,
9184	destParent) == -1)
9185	goto internal_error;
9186	parnsdone = 1;
9187	}
9188	/*
9189	* Adopt ns-references.
9190	*/
9191	if (XML_NSMAP_NOTEMPTY(nsMap)) {
9192	/*
9193	* Search for a mapping.
9194	*/
9195	XML_NSMAP_FOREACH(nsMap, mi) {
9196	if ((mi->shadowDepth == -1) &&
9197	(cur->ns == mi->oldNs)) {
9198
9199	cur->ns = mi->newNs;
9200	goto ns_end;
9201	}
9202	}
9203	}
9204	/*
9205	* No matching namespace in scope. We need a new one.
9206	*/
9207	if ((ctxt) && (ctxt->getNsForNodeFunc)) {
9208	/*
9209	* User-defined behaviour.
9210	*/
9211	ns = ctxt->getNsForNodeFunc(ctxt, cur,
9212	cur->ns->href, cur->ns->prefix);
9213	/*
9214	* Insert mapping if ns is available; it's the users fault
9215	* if not.
9216	*/
9217	if (xmlDOMWrapNsMapAddItem(&nsMap, -1,
9218	cur->ns, ns, XML_TREE_NSMAP_CUSTOM) == NULL)
9219	goto internal_error;
9220	cur->ns = ns;
9221	} else {
9222	/*
9223	* Acquire a normalized ns-decl and add it to the map.
9224	*/
9225	if (xmlDOMWrapNSNormAcquireNormalizedNs(destDoc,
9226	/* ns-decls on curElem or on destDoc->oldNs */
9227	destParent ? curElem : NULL,
9228	cur->ns, &ns,
9229	&nsMap, depth,
9230	ancestorsOnly,
9231	/* ns-decls must be prefixed for attributes. */
9232	(cur->type == XML_ATTRIBUTE_NODE) ? 1 : 0) == -1)
9233	goto internal_error;
9234	cur->ns = ns;
9235	}
9236	ns_end:
9237	/*
9238	* Further node properties.
9239	* TODO: Is this all?
9240	*/
9241	XML_TREE_ADOPT_STR(cur->name)
9242	if (cur->type == XML_ELEMENT_NODE) {
9243	cur->psvi = NULL;
9244	cur->line = 0;
9245	cur->extra = 0;
9246	/*
9247	* Walk attributes.
9248	*/
9249	if (cur->properties != NULL) {
9250	/*
9251	* Process first attribute node.
9252	*/
9253	cur = (xmlNodePtr) cur->properties;
9254	continue;
9255	}
9256	} else {
9257	/*
9258	* Attributes.
9259	*/
9260	if ((sourceDoc != NULL) &&
9261	(((xmlAttrPtr) cur)->atype == XML_ATTRIBUTE_ID))
9262	{
9263	xmlRemoveID(sourceDoc, (xmlAttrPtr) cur);
9264	}
9265	((xmlAttrPtr) cur)->atype = 0;
9266	((xmlAttrPtr) cur)->psvi = NULL;
9267	}
9268	break;
9269	case XML_TEXT_NODE:
9270	case XML_CDATA_SECTION_NODE:
9271	/*
9272	* This puts the content in the dest dict, only if
9273	* it was previously in the source dict.
9274	*/
9275	XML_TREE_ADOPT_STR_2(cur->content)
9276	goto leave_node;
9277	case XML_ENTITY_REF_NODE:
9278	/*
9279	* Remove reference to the entity-node.
9280	*/
9281	cur->content = NULL;
9282	cur->children = NULL;
9283	cur->last = NULL;
9284	if ((destDoc->intSubset) \|\| (destDoc->extSubset)) {
9285	xmlEntityPtr ent;
9286	/*
9287	* Assign new entity-node if available.
9288	*/
9289	ent = xmlGetDocEntity(destDoc, cur->name);
9290	if (ent != NULL) {
9291	cur->content = ent->content;
9292	cur->children = (xmlNodePtr) ent;
9293	cur->last = (xmlNodePtr) ent;
9294	}
9295	}
9296	goto leave_node;
9297	case XML_PI_NODE:
9298	XML_TREE_ADOPT_STR(cur->name)
9299	XML_TREE_ADOPT_STR_2(cur->content)
9300	break;
9301	case XML_COMMENT_NODE:
9302	break;
9303	default:
9304	goto internal_error;
9305	}
9306	/*
9307	* Walk the tree.
9308	*/
9309	if (cur->children != NULL) {
9310	cur = cur->children;
9311	continue;
9312	}
9313
9314	leave_node:
9315	if (cur == node)
9316	break;
9317	if ((cur->type == XML_ELEMENT_NODE) \|\|
9318	(cur->type == XML_XINCLUDE_START) \|\|
9319	(cur->type == XML_XINCLUDE_END))
9320	{
9321	/*
9322	* TODO: Do we expect nsDefs on XML_XINCLUDE_START?
9323	*/
9324	if (XML_NSMAP_NOTEMPTY(nsMap)) {
9325	/*
9326	* Pop mappings.
9327	*/
9328	while ((nsMap->last != NULL) &&
9329	(nsMap->last->depth >= depth))
9330	{
9331	XML_NSMAP_POP(nsMap, mi)
9332	}
9333	/*
9334	* Unshadow.
9335	*/
9336	XML_NSMAP_FOREACH(nsMap, mi) {
9337	if (mi->shadowDepth >= depth)
9338	mi->shadowDepth = -1;
9339	}
9340	}
9341	depth--;
9342	}
9343	if (cur->next != NULL)
9344	cur = cur->next;
9345	else if ((cur->type == XML_ATTRIBUTE_NODE) &&
9346	(cur->parent->children != NULL))
9347	{
9348	cur = cur->parent->children;
9349	} else {
9350	cur = cur->parent;
9351	goto leave_node;
9352	}
9353	}
9354
9355	goto exit;
9356
9357	internal_error:
9358	ret = -1;
9359
9360	exit:
9361	/*
9362	* Cleanup.
9363	*/
9364	if (nsMap != NULL) {
9365	if ((ctxt) && (ctxt->namespaceMap == nsMap)) {
9366	/*
9367	* Just cleanup the map but don't free.
9368	*/
9369	if (nsMap->first) {
9370	if (nsMap->pool)
9371	nsMap->last->next = nsMap->pool;
9372	nsMap->pool = nsMap->first;
9373	nsMap->first = NULL;
9374	}
9375	} else
9376	xmlDOMWrapNsMapFree(nsMap);
9377	}
9378	return(ret);
9379	}
9380
9381	/*
9382	* xmlDOMWrapCloneNode:
9383	* @ctxt: the optional context for custom processing
9384	* @sourceDoc: the optional sourceDoc
9385	* @node: the node to start with
9386	* @resNode: the clone of the given @node
9387	* @destDoc: the destination doc
9388	* @destParent: the optional new parent of @node in @destDoc
9389	* @deep: descend into child if set
9390	* @options: option flags
9391	*
9392	* References of out-of scope ns-decls are remapped to point to @destDoc:
9393	* 1) If @destParent is given, then nsDef entries on element-nodes are used
9394	* 2) If no @destParent is given, then @destDoc->oldNs entries are used.
9395	* This is the case when you don't know already where the cloned branch
9396	* will be added to.
9397	*
9398	* If @destParent is given, it ensures that the tree is namespace
9399	* wellformed by creating additional ns-decls where needed.
9400	* Note that, since prefixes of already existent ns-decls can be
9401	* shadowed by this process, it could break QNames in attribute
9402	* values or element content.
9403	* TODO:
9404	* 1) What to do with XInclude? Currently this returns an error for XInclude.
9405	*
9406	* Returns 0 if the operation succeeded,
9407	* 1 if a node of unsupported (or not yet supported) type was given,
9408	* -1 on API/internal errors.
9409	*/
9410
9411	int
9412	xmlDOMWrapCloneNode(xmlDOMWrapCtxtPtr ctxt,
9413	xmlDocPtr sourceDoc,
9414	xmlNodePtr node,
9415	xmlNodePtr *resNode,
9416	xmlDocPtr destDoc,
9417	xmlNodePtr destParent,
9418	int deep,
9419	int options ATTRIBUTE_UNUSED)
9420	{
9421	int ret = 0;
9422	xmlNodePtr cur, curElem = NULL;
9423	xmlNsMapPtr nsMap = NULL;
9424	xmlNsMapItemPtr mi;
9425	xmlNsPtr ns;
9426	int depth = -1;
9427	/* int adoptStr = 1; */
9428	/* gather @parent's ns-decls. */
9429	int parnsdone = 0;
9430	/*
9431	* @ancestorsOnly:
9432	* TODO: @ancestorsOnly should be set per option.
9433	*
9434	*/
9435	int ancestorsOnly = 0;
9436	xmlNodePtr resultClone = NULL, clone = NULL, parentClone = NULL, prevClone = NULL;
9437	xmlNsPtr cloneNs = NULL, *cloneNsDefSlot = NULL;
9438	xmlDictPtr dict; /* The destination dict */
9439
9440	if ((node == NULL) \|\| (resNode == NULL) \|\| (destDoc == NULL))
9441	return(-1);
9442	/*
9443	* TODO: Initially we support only element-nodes.
9444	*/
9445	if (node->type != XML_ELEMENT_NODE)
9446	return(1);
9447	/*
9448	* Check node->doc sanity.
9449	*/
9450	if ((node->doc != NULL) && (sourceDoc != NULL) &&
9451	(node->doc != sourceDoc)) {
9452	/*
9453	* Might be an XIncluded node.
9454	*/
9455	return (-1);
9456	}
9457	if (sourceDoc == NULL)
9458	sourceDoc = node->doc;
9459	if (sourceDoc == NULL)
9460	return (-1);
9461
9462	dict = destDoc->dict;
9463	/*
9464	* Reuse the namespace map of the context.
9465	*/
9466	if (ctxt)
9467	nsMap = (xmlNsMapPtr) ctxt->namespaceMap;
9468
9469	*resNode = NULL;
9470
9471	cur = node;
9472	if ((cur != NULL) && (cur->type == XML_NAMESPACE_DECL))
9473	return(-1);
9474
9475	while (cur != NULL) {
9476	if (cur->doc != sourceDoc) {
9477	/*
9478	* We'll assume XIncluded nodes if the doc differs.
9479	* TODO: Do we need to reconciliate XIncluded nodes?
9480	* TODO: This here returns -1 in this case.
9481	*/
9482	goto internal_error;
9483	}
9484	/*
9485	* Create a new node.
9486	*/
9487	switch (cur->type) {
9488	case XML_XINCLUDE_START:
9489	case XML_XINCLUDE_END:
9490	/*
9491	* TODO: What to do with XInclude?
9492	*/
9493	goto internal_error;
9494	break;
9495	case XML_ELEMENT_NODE:
9496	case XML_TEXT_NODE:
9497	case XML_CDATA_SECTION_NODE:
9498	case XML_COMMENT_NODE:
9499	case XML_PI_NODE:
9500	case XML_DOCUMENT_FRAG_NODE:
9501	case XML_ENTITY_REF_NODE:
9502	case XML_ENTITY_NODE:
9503	/*
9504	* Nodes of xmlNode structure.
9505	*/
9506	clone = (xmlNodePtr) xmlMalloc(sizeof(xmlNode));
9507	if (clone == NULL) {
9508	xmlTreeErrMemory("xmlDOMWrapCloneNode(): allocating a node");
9509	goto internal_error;
9510	}
9511	memset(clone, 0, sizeof(xmlNode));
9512	/*
9513	* Set hierarchical links.
9514	*/
9515	if (resultClone != NULL) {
9516	clone->parent = parentClone;
9517	if (prevClone) {
9518	prevClone->next = clone;
9519	clone->prev = prevClone;
9520	} else
9521	parentClone->children = clone;
9522	} else
9523	resultClone = clone;
9524
9525	break;
9526	case XML_ATTRIBUTE_NODE:
9527	/*
9528	* Attributes (xmlAttr).
9529	*/
9530	clone = (xmlNodePtr) xmlMalloc(sizeof(xmlAttr));
9531	if (clone == NULL) {
9532	xmlTreeErrMemory("xmlDOMWrapCloneNode(): allocating an attr-node");
9533	goto internal_error;
9534	}
9535	memset(clone, 0, sizeof(xmlAttr));
9536	/*
9537	* Set hierarchical links.
9538	* TODO: Change this to add to the end of attributes.
9539	*/
9540	if (resultClone != NULL) {
9541	clone->parent = parentClone;
9542	if (prevClone) {
9543	prevClone->next = clone;
9544	clone->prev = prevClone;
9545	} else
9546	parentClone->properties = (xmlAttrPtr) clone;
9547	} else
9548	resultClone = clone;
9549	break;
9550	default:
9551	/*
9552	* TODO QUESTION: Any other nodes expected?
9553	*/
9554	goto internal_error;
9555	}
9556
9557	clone->type = cur->type;
9558	clone->doc = destDoc;
9559
9560	/*
9561	* Clone the name of the node if any.
9562	*/
9563	if (cur->name == xmlStringText)
9564	clone->name = xmlStringText;
9565	else if (cur->name == xmlStringTextNoenc)
9566	/*
9567	* NOTE: Although xmlStringTextNoenc is never assigned to a node
9568	* in tree.c, it might be set in Libxslt via
9569	* "xsl:disable-output-escaping".
9570	*/
9571	clone->name = xmlStringTextNoenc;
9572	else if (cur->name == xmlStringComment)
9573	clone->name = xmlStringComment;
9574	else if (cur->name != NULL) {
9575	DICT_CONST_COPY(cur->name, clone->name);
9576	}
9577
9578	switch (cur->type) {
9579	case XML_XINCLUDE_START:
9580	case XML_XINCLUDE_END:
9581	/*
9582	* TODO
9583	*/
9584	return (-1);
9585	case XML_ELEMENT_NODE:
9586	curElem = cur;
9587	depth++;
9588	/*
9589	* Namespace declarations.
9590	*/
9591	if (cur->nsDef != NULL) {
9592	if (! parnsdone) {
9593	if (destParent && (ctxt == NULL)) {
9594	/*
9595	* Gather @parent's in-scope ns-decls.
9596	*/
9597	if (xmlDOMWrapNSNormGatherInScopeNs(&nsMap,
9598	destParent) == -1)
9599	goto internal_error;
9600	}
9601	parnsdone = 1;
9602	}
9603	/*
9604	* Clone namespace declarations.
9605	*/
9606	cloneNsDefSlot = &(clone->nsDef);
9607	for (ns = cur->nsDef; ns != NULL; ns = ns->next) {
9608	/*
9609	* Create a new xmlNs.
9610	*/
9611	cloneNs = (xmlNsPtr) xmlMalloc(sizeof(xmlNs));
9612	if (cloneNs == NULL) {
9613	xmlTreeErrMemory("xmlDOMWrapCloneNode(): "
9614	"allocating namespace");
9615	return(-1);
9616	}
9617	memset(cloneNs, 0, sizeof(xmlNs));
9618	cloneNs->type = XML_LOCAL_NAMESPACE;
9619
9620	if (ns->href != NULL)
9621	cloneNs->href = xmlStrdup(ns->href);
9622	if (ns->prefix != NULL)
9623	cloneNs->prefix = xmlStrdup(ns->prefix);
9624
9625	*cloneNsDefSlot = cloneNs;
9626	cloneNsDefSlot = &(cloneNs->next);
9627
9628	/*
9629	* Note that for custom handling of ns-references,
9630	* the ns-decls need not be stored in the ns-map,
9631	* since they won't be referenced by node->ns.
9632	*/
9633	if ((ctxt == NULL) \|\|
9634	(ctxt->getNsForNodeFunc == NULL))
9635	{
9636	/*
9637	* Does it shadow any ns-decl?
9638	*/
9639	if (XML_NSMAP_NOTEMPTY(nsMap)) {
9640	XML_NSMAP_FOREACH(nsMap, mi) {
9641	if ((mi->depth >= XML_TREE_NSMAP_PARENT) &&
9642	(mi->shadowDepth == -1) &&
9643	((ns->prefix == mi->newNs->prefix) \|\|
9644	xmlStrEqual(ns->prefix,
9645	mi->newNs->prefix))) {
9646	/*
9647	* Mark as shadowed at the current
9648	* depth.
9649	*/
9650	mi->shadowDepth = depth;
9651	}
9652	}
9653	}
9654	/*
9655	* Push mapping.
9656	*/
9657	if (xmlDOMWrapNsMapAddItem(&nsMap, -1,
9658	ns, cloneNs, depth) == NULL)
9659	goto internal_error;
9660	}
9661	}
9662	}
9663	/* cur->ns will be processed further down. */
9664	break;
9665	case XML_ATTRIBUTE_NODE:
9666	/* IDs will be processed further down. */
9667	/* cur->ns will be processed further down. */
9668	break;
9669	case XML_TEXT_NODE:
9670	case XML_CDATA_SECTION_NODE:
9671	/*
9672	* Note that this will also cover the values of attributes.
9673	*/
9674	DICT_COPY(cur->content, clone->content);
9675	goto leave_node;
9676	case XML_ENTITY_NODE:
9677	/* TODO: What to do here? */
9678	goto leave_node;
9679	case XML_ENTITY_REF_NODE:
9680	if (sourceDoc != destDoc) {
9681	if ((destDoc->intSubset) \|\| (destDoc->extSubset)) {
9682	xmlEntityPtr ent;
9683	/*
9684	* Different doc: Assign new entity-node if available.
9685	*/
9686	ent = xmlGetDocEntity(destDoc, cur->name);
9687	if (ent != NULL) {
9688	clone->content = ent->content;
9689	clone->children = (xmlNodePtr) ent;
9690	clone->last = (xmlNodePtr) ent;
9691	}
9692	}
9693	} else {
9694	/*
9695	* Same doc: Use the current node's entity declaration
9696	* and value.
9697	*/
9698	clone->content = cur->content;
9699	clone->children = cur->children;
9700	clone->last = cur->last;
9701	}
9702	goto leave_node;
9703	case XML_PI_NODE:
9704	DICT_COPY(cur->content, clone->content);
9705	goto leave_node;
9706	case XML_COMMENT_NODE:
9707	DICT_COPY(cur->content, clone->content);
9708	goto leave_node;
9709	default:
9710	goto internal_error;
9711	}
9712
9713	if (cur->ns == NULL)
9714	goto end_ns_reference;
9715
9716	/* handle_ns_reference: */
9717	/*
9718	The following will take care of references to ns-decls ******
9719	** and is intended only for element- and attribute-nodes.
9720	**
9721	*/
9722	if (! parnsdone) {
9723	if (destParent && (ctxt == NULL)) {
9724	if (xmlDOMWrapNSNormGatherInScopeNs(&nsMap, destParent) == -1)
9725	goto internal_error;
9726	}
9727	parnsdone = 1;
9728	}
9729	/*
9730	* Adopt ns-references.
9731	*/
9732	if (XML_NSMAP_NOTEMPTY(nsMap)) {
9733	/*
9734	* Search for a mapping.
9735	*/
9736	XML_NSMAP_FOREACH(nsMap, mi) {
9737	if ((mi->shadowDepth == -1) &&
9738	(cur->ns == mi->oldNs)) {
9739	/*
9740	* This is the nice case: a mapping was found.
9741	*/
9742	clone->ns = mi->newNs;
9743	goto end_ns_reference;
9744	}
9745	}
9746	}
9747	/*
9748	* No matching namespace in scope. We need a new one.
9749	*/
9750	if ((ctxt != NULL) && (ctxt->getNsForNodeFunc != NULL)) {
9751	/*
9752	* User-defined behaviour.
9753	*/
9754	ns = ctxt->getNsForNodeFunc(ctxt, cur,
9755	cur->ns->href, cur->ns->prefix);
9756	/*
9757	* Add user's mapping.
9758	*/
9759	if (xmlDOMWrapNsMapAddItem(&nsMap, -1,
9760	cur->ns, ns, XML_TREE_NSMAP_CUSTOM) == NULL)
9761	goto internal_error;
9762	clone->ns = ns;
9763	} else {
9764	/*
9765	* Acquire a normalized ns-decl and add it to the map.
9766	*/
9767	if (xmlDOMWrapNSNormAcquireNormalizedNs(destDoc,
9768	/* ns-decls on curElem or on destDoc->oldNs */
9769	destParent ? curElem : NULL,
9770	cur->ns, &ns,
9771	&nsMap, depth,
9772	/* if we need to search only in the ancestor-axis */
9773	ancestorsOnly,
9774	/* ns-decls must be prefixed for attributes. */
9775	(cur->type == XML_ATTRIBUTE_NODE) ? 1 : 0) == -1)
9776	goto internal_error;
9777	clone->ns = ns;
9778	}
9779
9780	end_ns_reference:
9781
9782	/*
9783	* Some post-processing.
9784	*
9785	* Handle ID attributes.
9786	*/
9787	if ((clone->type == XML_ATTRIBUTE_NODE) &&
9788	(clone->parent != NULL))
9789	{
9790	if (xmlIsID(destDoc, clone->parent, (xmlAttrPtr) clone)) {
9791
9792	xmlChar *idVal;
9793
9794	idVal = xmlNodeListGetString(cur->doc, cur->children, 1);
9795	if (idVal != NULL) {
9796	if (xmlAddID(NULL, destDoc, idVal, (xmlAttrPtr) cur) == NULL) {
9797	/* TODO: error message. */
9798	xmlFree(idVal);
9799	goto internal_error;
9800	}
9801	xmlFree(idVal);
9802	}
9803	}
9804	}
9805	/*
9806	**
9807	The following will traverse the tree ************************
9808	**
9809	*
9810	* Walk the element's attributes before descending into child-nodes.
9811	*/
9812	if ((cur->type == XML_ELEMENT_NODE) && (cur->properties != NULL)) {
9813	prevClone = NULL;
9814	parentClone = clone;
9815	cur = (xmlNodePtr) cur->properties;
9816	continue;
9817	}
9818	into_content:
9819	/*
9820	* Descend into child-nodes.
9821	*/
9822	if (cur->children != NULL) {
9823	if (deep \|\| (cur->type == XML_ATTRIBUTE_NODE)) {
9824	prevClone = NULL;
9825	parentClone = clone;
9826	cur = cur->children;
9827	continue;
9828	}
9829	}
9830
9831	leave_node:
9832	/*
9833	* At this point we are done with the node, its content
9834	* and an element-nodes's attribute-nodes.
9835	*/
9836	if (cur == node)
9837	break;
9838	if ((cur->type == XML_ELEMENT_NODE) \|\|
9839	(cur->type == XML_XINCLUDE_START) \|\|
9840	(cur->type == XML_XINCLUDE_END)) {
9841	/*
9842	* TODO: Do we expect nsDefs on XML_XINCLUDE_START?
9843	*/
9844	if (XML_NSMAP_NOTEMPTY(nsMap)) {
9845	/*
9846	* Pop mappings.
9847	*/
9848	while ((nsMap->last != NULL) &&
9849	(nsMap->last->depth >= depth))
9850	{
9851	XML_NSMAP_POP(nsMap, mi)
9852	}
9853	/*
9854	* Unshadow.
9855	*/
9856	XML_NSMAP_FOREACH(nsMap, mi) {
9857	if (mi->shadowDepth >= depth)
9858	mi->shadowDepth = -1;
9859	}
9860	}
9861	depth--;
9862	}
9863	if (cur->next != NULL) {
9864	prevClone = clone;
9865	cur = cur->next;
9866	} else if (cur->type != XML_ATTRIBUTE_NODE) {
9867	/*
9868	* Set clone->last.
9869	*/
9870	if (clone->parent != NULL)
9871	clone->parent->last = clone;
9872	clone = clone->parent;
9873	if (clone != NULL)
9874	parentClone = clone->parent;
9875	/*
9876	* Process parent --> next;
9877	*/
9878	cur = cur->parent;
9879	goto leave_node;
9880	} else {
9881	/* This is for attributes only. */
9882	clone = clone->parent;
9883	parentClone = clone->parent;
9884	/*
9885	* Process parent-element --> children.
9886	*/
9887	cur = cur->parent;
9888	goto into_content;
9889	}
9890	}
9891	goto exit;
9892
9893	internal_error:
9894	ret = -1;
9895
9896	exit:
9897	/*
9898	* Cleanup.
9899	*/
9900	if (nsMap != NULL) {
9901	if ((ctxt) && (ctxt->namespaceMap == nsMap)) {
9902	/*
9903	* Just cleanup the map but don't free.
9904	*/
9905	if (nsMap->first) {
9906	if (nsMap->pool)
9907	nsMap->last->next = nsMap->pool;
9908	nsMap->pool = nsMap->first;
9909	nsMap->first = NULL;
9910	}
9911	} else
9912	xmlDOMWrapNsMapFree(nsMap);
9913	}
9914	/*
9915	* TODO: Should we try a cleanup of the cloned node in case of a
9916	* fatal error?
9917	*/
9918	*resNode = resultClone;
9919	return (ret);
9920	}
9921
9922	/*
9923	* xmlDOMWrapAdoptAttr:
9924	* @ctxt: the optional context for custom processing
9925	* @sourceDoc: the optional source document of attr
9926	* @attr: the attribute-node to be adopted
9927	* @destDoc: the destination doc for adoption
9928	* @destParent: the optional new parent of @attr in @destDoc
9929	* @options: option flags
9930	*
9931	* @attr is adopted by @destDoc.
9932	* Ensures that ns-references point to @destDoc: either to
9933	* elements->nsDef entries if @destParent is given, or to
9934	* @destDoc->oldNs otherwise.
9935	*
9936	* Returns 0 if succeeded, -1 otherwise and on API/internal errors.
9937	*/
9938	static int
9939	xmlDOMWrapAdoptAttr(xmlDOMWrapCtxtPtr ctxt,
9940	xmlDocPtr sourceDoc,
9941	xmlAttrPtr attr,
9942	xmlDocPtr destDoc,
9943	xmlNodePtr destParent,
9944	int options ATTRIBUTE_UNUSED)
9945	{
9946	xmlNodePtr cur;
9947	int adoptStr = 1;
9948
9949	if ((attr == NULL) \|\| (destDoc == NULL))
9950	return (-1);
9951
9952	attr->doc = destDoc;
9953	if (attr->ns != NULL) {
9954	xmlNsPtr ns = NULL;
9955
9956	if (ctxt != NULL) {
9957	/* TODO: User defined. */
9958	}
9959	/* XML Namespace. */
9960	if (IS_STR_XML(attr->ns->prefix)) {
9961	ns = xmlTreeEnsureXMLDecl(destDoc);
9962	} else if (destParent == NULL) {
9963	/*
9964	* Store in @destDoc->oldNs.
9965	*/
9966	ns = xmlDOMWrapStoreNs(destDoc, attr->ns->href, attr->ns->prefix);
9967	} else {
9968	/*
9969	* Declare on @destParent.
9970	*/
9971	if (xmlSearchNsByNamespaceStrict(destDoc, destParent, attr->ns->href,
9972	&ns, 1) == -1)
9973	goto internal_error;
9974	if (ns == NULL) {
9975	ns = xmlDOMWrapNSNormDeclareNsForced(destDoc, destParent,
9976	attr->ns->href, attr->ns->prefix, 1);
9977	}
9978	}
9979	if (ns == NULL)
9980	goto internal_error;
9981	attr->ns = ns;
9982	}
9983
9984	XML_TREE_ADOPT_STR(attr->name);
9985	attr->atype = 0;
9986	attr->psvi = NULL;
9987	/*
9988	* Walk content.
9989	*/
9990	if (attr->children == NULL)
9991	return (0);
9992	cur = attr->children;
9993	if ((cur != NULL) && (cur->type == XML_NAMESPACE_DECL))
9994	goto internal_error;
9995	while (cur != NULL) {
9996	cur->doc = destDoc;
9997	switch (cur->type) {
9998	case XML_TEXT_NODE:
9999	case XML_CDATA_SECTION_NODE:
10000	XML_TREE_ADOPT_STR_2(cur->content)
10001	break;
10002	case XML_ENTITY_REF_NODE:
10003	/*
10004	* Remove reference to the entity-node.
10005	*/
10006	cur->content = NULL;
10007	cur->children = NULL;
10008	cur->last = NULL;
10009	if ((destDoc->intSubset) \|\| (destDoc->extSubset)) {
10010	xmlEntityPtr ent;
10011	/*
10012	* Assign new entity-node if available.
10013	*/
10014	ent = xmlGetDocEntity(destDoc, cur->name);
10015	if (ent != NULL) {
10016	cur->content = ent->content;
10017	cur->children = (xmlNodePtr) ent;
10018	cur->last = (xmlNodePtr) ent;
10019	}
10020	}
10021	break;
10022	default:
10023	break;
10024	}
10025	if (cur->children != NULL) {
10026	cur = cur->children;
10027	continue;
10028	}
10029	next_sibling:
10030	if (cur == (xmlNodePtr) attr)
10031	break;
10032	if (cur->next != NULL)
10033	cur = cur->next;
10034	else {
10035	cur = cur->parent;
10036	goto next_sibling;
10037	}
10038	}
10039	return (0);
10040	internal_error:
10041	return (-1);
10042	}
10043
10044	/*
10045	* xmlDOMWrapAdoptNode:
10046	* @ctxt: the optional context for custom processing
10047	* @sourceDoc: the optional sourceDoc
10048	* @node: the node to start with
10049	* @destDoc: the destination doc
10050	* @destParent: the optional new parent of @node in @destDoc
10051	* @options: option flags
10052	*
10053	* References of out-of scope ns-decls are remapped to point to @destDoc:
10054	* 1) If @destParent is given, then nsDef entries on element-nodes are used
10055	* 2) If no @destParent is given, then @destDoc->oldNs entries are used
10056	* This is the case when you have an unlinked node and just want to move it
10057	* to the context of
10058	*
10059	* If @destParent is given, it ensures that the tree is namespace
10060	* wellformed by creating additional ns-decls where needed.
10061	* Note that, since prefixes of already existent ns-decls can be
10062	* shadowed by this process, it could break QNames in attribute
10063	* values or element content.
10064	* NOTE: This function was not intensively tested.
10065	*
10066	* Returns 0 if the operation succeeded,
10067	* 1 if a node of unsupported type was given,
10068	* 2 if a node of not yet supported type was given and
10069	* -1 on API/internal errors.
10070	*/
10071	int
10072	xmlDOMWrapAdoptNode(xmlDOMWrapCtxtPtr ctxt,
10073	xmlDocPtr sourceDoc,
10074	xmlNodePtr node,
10075	xmlDocPtr destDoc,
10076	xmlNodePtr destParent,
10077	int options)
10078	{
10079	if ((node == NULL) \|\| (node->type == XML_NAMESPACE_DECL) \|\|
10080	(destDoc == NULL) \|\|
10081	((destParent != NULL) && (destParent->doc != destDoc)))
10082	return(-1);
10083	/*
10084	* Check node->doc sanity.
10085	*/
10086	if ((node->doc != NULL) && (sourceDoc != NULL) &&
10087	(node->doc != sourceDoc)) {
10088	/*
10089	* Might be an XIncluded node.
10090	*/
10091	return (-1);
10092	}
10093	if (sourceDoc == NULL)
10094	sourceDoc = node->doc;
10095	if (sourceDoc == destDoc)
10096	return (-1);
10097	switch (node->type) {
10098	case XML_ELEMENT_NODE:
10099	case XML_ATTRIBUTE_NODE:
10100	case XML_TEXT_NODE:
10101	case XML_CDATA_SECTION_NODE:
10102	case XML_ENTITY_REF_NODE:
10103	case XML_PI_NODE:
10104	case XML_COMMENT_NODE:
10105	break;
10106	case XML_DOCUMENT_FRAG_NODE:
10107	/* TODO: Support document-fragment-nodes. */
10108	return (2);
10109	default:
10110	return (1);
10111	}
10112	/*
10113	* Unlink only if @node was not already added to @destParent.
10114	*/
10115	if ((node->parent != NULL) && (destParent != node->parent))
10116	xmlUnlinkNode(node);
10117
10118	if (node->type == XML_ELEMENT_NODE) {
10119	return (xmlDOMWrapAdoptBranch(ctxt, sourceDoc, node,
10120	destDoc, destParent, options));
10121	} else if (node->type == XML_ATTRIBUTE_NODE) {
10122	return (xmlDOMWrapAdoptAttr(ctxt, sourceDoc,
10123	(xmlAttrPtr) node, destDoc, destParent, options));
10124	} else {
10125	xmlNodePtr cur = node;
10126	int adoptStr = 1;
10127
10128	cur->doc = destDoc;
10129	/*
10130	* Optimize string adoption.
10131	*/
10132	if ((sourceDoc != NULL) &&
10133	(sourceDoc->dict == destDoc->dict))
10134	adoptStr = 0;
10135	switch (node->type) {
10136	case XML_TEXT_NODE:
10137	case XML_CDATA_SECTION_NODE:
10138	XML_TREE_ADOPT_STR_2(node->content)
10139	break;
10140	case XML_ENTITY_REF_NODE:
10141	/*
10142	* Remove reference to the entity-node.
10143	*/
10144	node->content = NULL;
10145	node->children = NULL;
10146	node->last = NULL;
10147	if ((destDoc->intSubset) \|\| (destDoc->extSubset)) {
10148	xmlEntityPtr ent;
10149	/*
10150	* Assign new entity-node if available.
10151	*/
10152	ent = xmlGetDocEntity(destDoc, node->name);
10153	if (ent != NULL) {
10154	node->content = ent->content;
10155	node->children = (xmlNodePtr) ent;
10156	node->last = (xmlNodePtr) ent;
10157	}
10158	}
10159	XML_TREE_ADOPT_STR(node->name)
10160	break;
10161	case XML_PI_NODE: {
10162	XML_TREE_ADOPT_STR(node->name)
10163	XML_TREE_ADOPT_STR_2(node->content)
10164	break;
10165	}
10166	default:
10167	break;
10168	}
10169	}
10170	return (0);
10171	}
10172
10173	#define bottom_tree
10174	#include "elfgcchack.h"

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