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Side by Side Diff: third_party/libxslt/libxslt/xslt.c

Issue 2865973002: Check in the libxslt roll script. (Closed)
Patch Set: Created 3 years, 7 months ago
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1 /*
2 * xslt.c: Implemetation of an XSL Transformation 1.0 engine
3 *
4 * Reference:
5 * XSLT specification
6 * http://www.w3.org/TR/1999/REC-xslt-19991116
7 *
8 * Associating Style Sheets with XML documents
9 * http://www.w3.org/1999/06/REC-xml-stylesheet-19990629
10 *
11 * See Copyright for the status of this software.
12 *
13 * daniel@veillard.com
14 */
15
16 #define IN_LIBXSLT
17 #include "libxslt.h"
18
19 #include <string.h>
20
21 #include <libxml/xmlmemory.h>
22 #include <libxml/parser.h>
23 #include <libxml/tree.h>
24 #include <libxml/valid.h>
25 #include <libxml/hash.h>
26 #include <libxml/uri.h>
27 #include <libxml/xmlerror.h>
28 #include <libxml/parserInternals.h>
29 #include <libxml/xpathInternals.h>
30 #include <libxml/xpath.h>
31 #include "xslt.h"
32 #include "xsltInternals.h"
33 #include "pattern.h"
34 #include "variables.h"
35 #include "namespaces.h"
36 #include "attributes.h"
37 #include "xsltutils.h"
38 #include "imports.h"
39 #include "keys.h"
40 #include "documents.h"
41 #include "extensions.h"
42 #include "preproc.h"
43 #include "extra.h"
44 #include "security.h"
45
46 #ifdef WITH_XSLT_DEBUG
47 #define WITH_XSLT_DEBUG_PARSING
48 /* #define WITH_XSLT_DEBUG_BLANKS */
49 #endif
50
51 const char *xsltEngineVersion = LIBXSLT_VERSION_STRING LIBXSLT_VERSION_EXTRA;
52 const int xsltLibxsltVersion = LIBXSLT_VERSION;
53 const int xsltLibxmlVersion = LIBXML_VERSION;
54
55 #ifdef XSLT_REFACTORED
56
57 const xmlChar *xsltConstNamespaceNameXSLT = (const xmlChar *) XSLT_NAMESPACE;
58
59 #define XSLT_ELEMENT_CATEGORY_XSLT 0
60 #define XSLT_ELEMENT_CATEGORY_EXTENSION 1
61 #define XSLT_ELEMENT_CATEGORY_LRE 2
62
63 /*
64 * xsltLiteralResultMarker:
65 * Marker for Literal result elements, in order to avoid multiple attempts
66 * to recognize such elements in the stylesheet's tree.
67 * This marker is set on node->psvi during the initial traversal
68 * of a stylesheet's node tree.
69 *
70 const xmlChar *xsltLiteralResultMarker =
71 (const xmlChar *) "Literal Result Element";
72 */
73
74 /*
75 * xsltXSLTTextMarker:
76 * Marker for xsl:text elements. Used to recognize xsl:text elements
77 * for post-processing of the stylesheet's tree, where those
78 * elements are removed from the tree.
79 */
80 const xmlChar *xsltXSLTTextMarker = (const xmlChar *) "XSLT Text Element";
81
82 /*
83 * xsltXSLTAttrMarker:
84 * Marker for XSLT attribute on Literal Result Elements.
85 */
86 const xmlChar *xsltXSLTAttrMarker = (const xmlChar *) "LRE XSLT Attr";
87
88 #endif
89
90 #ifdef XSLT_LOCALE_WINAPI
91 extern xmlRMutexPtr xsltLocaleMutex;
92 #endif
93 /*
94 * Harmless but avoiding a problem when compiling against a
95 * libxml <= 2.3.11 without LIBXML_DEBUG_ENABLED
96 */
97 #ifndef LIBXML_DEBUG_ENABLED
98 double xmlXPathStringEvalNumber(const xmlChar *str);
99 #endif
100 /*
101 * Useful macros
102 */
103
104 #ifdef IS_BLANK
105 #undef IS_BLANK
106 #endif
107 #define IS_BLANK(c) (((c) == 0x20) || ((c) == 0x09) || ((c) == 0xA) || \
108 ((c) == 0x0D))
109
110 #ifdef IS_BLANK_NODE
111 #undef IS_BLANK_NODE
112 #endif
113 #define IS_BLANK_NODE(n) \
114 (((n)->type == XML_TEXT_NODE) && (xsltIsBlank((n)->content)))
115
116 /**
117 * xsltParseContentError:
118 *
119 * @style: the stylesheet
120 * @node: the node where the error occured
121 *
122 * Compile-time error function.
123 */
124 static void
125 xsltParseContentError(xsltStylesheetPtr style,
126 xmlNodePtr node)
127 {
128 if ((style == NULL) || (node == NULL))
129 return;
130
131 if (IS_XSLT_ELEM(node))
132 xsltTransformError(NULL, style, node,
133 "The XSLT-element '%s' is not allowed at this position.\n",
134 node->name);
135 else
136 xsltTransformError(NULL, style, node,
137 "The element '%s' is not allowed at this position.\n",
138 node->name);
139 style->errors++;
140 }
141
142 #ifdef XSLT_REFACTORED
143 #else
144 /**
145 * exclPrefixPush:
146 * @style: the transformation stylesheet
147 * @value: the excluded namespace name to push on the stack
148 *
149 * Push an excluded namespace name on the stack
150 *
151 * Returns the new index in the stack or -1 if already present or
152 * in case of error
153 */
154 static int
155 exclPrefixPush(xsltStylesheetPtr style, xmlChar * value)
156 {
157 int i;
158
159 if (style->exclPrefixMax == 0) {
160 style->exclPrefixMax = 4;
161 style->exclPrefixTab =
162 (xmlChar * *)xmlMalloc(style->exclPrefixMax *
163 sizeof(style->exclPrefixTab[0]));
164 if (style->exclPrefixTab == NULL) {
165 xmlGenericError(xmlGenericErrorContext, "malloc failed !\n");
166 return (-1);
167 }
168 }
169 /* do not push duplicates */
170 for (i = 0;i < style->exclPrefixNr;i++) {
171 if (xmlStrEqual(style->exclPrefixTab[i], value))
172 return(-1);
173 }
174 if (style->exclPrefixNr >= style->exclPrefixMax) {
175 style->exclPrefixMax *= 2;
176 style->exclPrefixTab =
177 (xmlChar * *)xmlRealloc(style->exclPrefixTab,
178 style->exclPrefixMax *
179 sizeof(style->exclPrefixTab[0]));
180 if (style->exclPrefixTab == NULL) {
181 xmlGenericError(xmlGenericErrorContext, "realloc failed !\n");
182 return (-1);
183 }
184 }
185 style->exclPrefixTab[style->exclPrefixNr] = value;
186 style->exclPrefix = value;
187 return (style->exclPrefixNr++);
188 }
189 /**
190 * exclPrefixPop:
191 * @style: the transformation stylesheet
192 *
193 * Pop an excluded prefix value from the stack
194 *
195 * Returns the stored excluded prefix value
196 */
197 static xmlChar *
198 exclPrefixPop(xsltStylesheetPtr style)
199 {
200 xmlChar *ret;
201
202 if (style->exclPrefixNr <= 0)
203 return (0);
204 style->exclPrefixNr--;
205 if (style->exclPrefixNr > 0)
206 style->exclPrefix = style->exclPrefixTab[style->exclPrefixNr - 1];
207 else
208 style->exclPrefix = NULL;
209 ret = style->exclPrefixTab[style->exclPrefixNr];
210 style->exclPrefixTab[style->exclPrefixNr] = 0;
211 return (ret);
212 }
213 #endif
214
215 /************************************************************************
216 * *
217 * Helper functions *
218 * *
219 ************************************************************************/
220
221 static int initialized = 0;
222 /**
223 * xsltInit:
224 *
225 * Initializes the processor (e.g. registers built-in extensions,
226 * etc.)
227 */
228 void
229 xsltInit (void) {
230 if (initialized == 0) {
231 initialized = 1;
232 #ifdef XSLT_LOCALE_WINAPI
233 xsltLocaleMutex = xmlNewRMutex();
234 #endif
235 xsltRegisterAllExtras();
236 }
237 }
238
239 /**
240 * xsltUninit:
241 *
242 * Uninitializes the processor.
243 */
244 void
245 xsltUninit (void) {
246 #ifdef XSLT_LOCALE_WINAPI
247 xmlFreeRMutex(xsltLocaleMutex);
248 xsltLocaleMutex = NULL;
249 #endif
250 initialized = 0;
251 }
252
253 /**
254 * xsltIsBlank:
255 * @str: a string
256 *
257 * Check if a string is ignorable
258 *
259 * Returns 1 if the string is NULL or made of blanks chars, 0 otherwise
260 */
261 int
262 xsltIsBlank(xmlChar *str) {
263 if (str == NULL)
264 return(1);
265 while (*str != 0) {
266 if (!(IS_BLANK(*str))) return(0);
267 str++;
268 }
269 return(1);
270 }
271
272 /************************************************************************
273 * *
274 * Routines to handle XSLT data structures *
275 * *
276 ************************************************************************/
277 static xsltDecimalFormatPtr
278 xsltNewDecimalFormat(const xmlChar *nsUri, xmlChar *name)
279 {
280 xsltDecimalFormatPtr self;
281 /* UTF-8 for 0x2030 */
282 static const xmlChar permille[4] = {0xe2, 0x80, 0xb0, 0};
283
284 self = xmlMalloc(sizeof(xsltDecimalFormat));
285 if (self != NULL) {
286 self->next = NULL;
287 self->nsUri = nsUri;
288 self->name = name;
289
290 /* Default values */
291 self->digit = xmlStrdup(BAD_CAST("#"));
292 self->patternSeparator = xmlStrdup(BAD_CAST(";"));
293 self->decimalPoint = xmlStrdup(BAD_CAST("."));
294 self->grouping = xmlStrdup(BAD_CAST(","));
295 self->percent = xmlStrdup(BAD_CAST("%"));
296 self->permille = xmlStrdup(BAD_CAST(permille));
297 self->zeroDigit = xmlStrdup(BAD_CAST("0"));
298 self->minusSign = xmlStrdup(BAD_CAST("-"));
299 self->infinity = xmlStrdup(BAD_CAST("Infinity"));
300 self->noNumber = xmlStrdup(BAD_CAST("NaN"));
301 }
302 return self;
303 }
304
305 static void
306 xsltFreeDecimalFormat(xsltDecimalFormatPtr self)
307 {
308 if (self != NULL) {
309 if (self->digit)
310 xmlFree(self->digit);
311 if (self->patternSeparator)
312 xmlFree(self->patternSeparator);
313 if (self->decimalPoint)
314 xmlFree(self->decimalPoint);
315 if (self->grouping)
316 xmlFree(self->grouping);
317 if (self->percent)
318 xmlFree(self->percent);
319 if (self->permille)
320 xmlFree(self->permille);
321 if (self->zeroDigit)
322 xmlFree(self->zeroDigit);
323 if (self->minusSign)
324 xmlFree(self->minusSign);
325 if (self->infinity)
326 xmlFree(self->infinity);
327 if (self->noNumber)
328 xmlFree(self->noNumber);
329 if (self->name)
330 xmlFree(self->name);
331 xmlFree(self);
332 }
333 }
334
335 static void
336 xsltFreeDecimalFormatList(xsltStylesheetPtr self)
337 {
338 xsltDecimalFormatPtr iter;
339 xsltDecimalFormatPtr tmp;
340
341 if (self == NULL)
342 return;
343
344 iter = self->decimalFormat;
345 while (iter != NULL) {
346 tmp = iter->next;
347 xsltFreeDecimalFormat(iter);
348 iter = tmp;
349 }
350 }
351
352 /**
353 * xsltDecimalFormatGetByName:
354 * @style: the XSLT stylesheet
355 * @name: the decimal-format name to find
356 *
357 * Find decimal-format by name
358 *
359 * Returns the xsltDecimalFormatPtr
360 */
361 xsltDecimalFormatPtr
362 xsltDecimalFormatGetByName(xsltStylesheetPtr style, xmlChar *name)
363 {
364 xsltDecimalFormatPtr result = NULL;
365
366 if (name == NULL)
367 return style->decimalFormat;
368
369 while (style != NULL) {
370 for (result = style->decimalFormat->next;
371 result != NULL;
372 result = result->next) {
373 if ((result->nsUri == NULL) && xmlStrEqual(name, result->name))
374 return result;
375 }
376 style = xsltNextImport(style);
377 }
378 return result;
379 }
380
381 /**
382 * xsltDecimalFormatGetByQName:
383 * @style: the XSLT stylesheet
384 * @nsUri: the namespace URI of the QName
385 * @name: the local part of the QName
386 *
387 * Find decimal-format by QName
388 *
389 * Returns the xsltDecimalFormatPtr
390 */
391 xsltDecimalFormatPtr
392 xsltDecimalFormatGetByQName(xsltStylesheetPtr style, const xmlChar *nsUri,
393 const xmlChar *name)
394 {
395 xsltDecimalFormatPtr result = NULL;
396
397 if (name == NULL)
398 return style->decimalFormat;
399
400 while (style != NULL) {
401 for (result = style->decimalFormat->next;
402 result != NULL;
403 result = result->next) {
404 if (xmlStrEqual(nsUri, result->nsUri) &&
405 xmlStrEqual(name, result->name))
406 return result;
407 }
408 style = xsltNextImport(style);
409 }
410 return result;
411 }
412
413
414 /**
415 * xsltNewTemplate:
416 *
417 * Create a new XSLT Template
418 *
419 * Returns the newly allocated xsltTemplatePtr or NULL in case of error
420 */
421 static xsltTemplatePtr
422 xsltNewTemplate(void) {
423 xsltTemplatePtr cur;
424
425 cur = (xsltTemplatePtr) xmlMalloc(sizeof(xsltTemplate));
426 if (cur == NULL) {
427 xsltTransformError(NULL, NULL, NULL,
428 "xsltNewTemplate : malloc failed\n");
429 return(NULL);
430 }
431 memset(cur, 0, sizeof(xsltTemplate));
432 cur->priority = XSLT_PAT_NO_PRIORITY;
433 return(cur);
434 }
435
436 /**
437 * xsltFreeTemplate:
438 * @template: an XSLT template
439 *
440 * Free up the memory allocated by @template
441 */
442 static void
443 xsltFreeTemplate(xsltTemplatePtr template) {
444 if (template == NULL)
445 return;
446 if (template->match) xmlFree(template->match);
447 /*
448 * NOTE: @name and @nameURI are put into the string dict now.
449 * if (template->name) xmlFree(template->name);
450 * if (template->nameURI) xmlFree(template->nameURI);
451 */
452 /*
453 if (template->mode) xmlFree(template->mode);
454 if (template->modeURI) xmlFree(template->modeURI);
455 */
456 if (template->inheritedNs) xmlFree(template->inheritedNs);
457
458 /* free profiling data */
459 if (template->templCalledTab) xmlFree(template->templCalledTab);
460 if (template->templCountTab) xmlFree(template->templCountTab);
461
462 memset(template, -1, sizeof(xsltTemplate));
463 xmlFree(template);
464 }
465
466 /**
467 * xsltFreeTemplateList:
468 * @template: an XSLT template list
469 *
470 * Free up the memory allocated by all the elements of @template
471 */
472 static void
473 xsltFreeTemplateList(xsltTemplatePtr template) {
474 xsltTemplatePtr cur;
475
476 while (template != NULL) {
477 cur = template;
478 template = template->next;
479 xsltFreeTemplate(cur);
480 }
481 }
482
483 #ifdef XSLT_REFACTORED
484
485 static void
486 xsltFreeNsAliasList(xsltNsAliasPtr item)
487 {
488 xsltNsAliasPtr tmp;
489
490 while (item) {
491 tmp = item;
492 item = item->next;
493 xmlFree(tmp);
494 }
495 return;
496 }
497
498 #ifdef XSLT_REFACTORED_XSLT_NSCOMP
499 static void
500 xsltFreeNamespaceMap(xsltNsMapPtr item)
501 {
502 xsltNsMapPtr tmp;
503
504 while (item) {
505 tmp = item;
506 item = item->next;
507 xmlFree(tmp);
508 }
509 return;
510 }
511
512 static xsltNsMapPtr
513 xsltNewNamespaceMapItem(xsltCompilerCtxtPtr cctxt,
514 xmlDocPtr doc,
515 xmlNsPtr ns,
516 xmlNodePtr elem)
517 {
518 xsltNsMapPtr ret;
519
520 if ((cctxt == NULL) || (doc == NULL) || (ns == NULL))
521 return(NULL);
522
523 ret = (xsltNsMapPtr) xmlMalloc(sizeof(xsltNsMap));
524 if (ret == NULL) {
525 xsltTransformError(NULL, cctxt->style, elem,
526 "Internal error: (xsltNewNamespaceMapItem) "
527 "memory allocation failed.\n");
528 return(NULL);
529 }
530 memset(ret, 0, sizeof(xsltNsMap));
531 ret->doc = doc;
532 ret->ns = ns;
533 ret->origNsName = ns->href;
534 /*
535 * Store the item at current stylesheet-level.
536 */
537 if (cctxt->psData->nsMap != NULL)
538 ret->next = cctxt->psData->nsMap;
539 cctxt->psData->nsMap = ret;
540
541 return(ret);
542 }
543 #endif /* XSLT_REFACTORED_XSLT_NSCOMP */
544
545 /**
546 * xsltCompilerVarInfoFree:
547 * @cctxt: the compilation context
548 *
549 * Frees the list of information for vars/params.
550 */
551 static void
552 xsltCompilerVarInfoFree(xsltCompilerCtxtPtr cctxt)
553 {
554 xsltVarInfoPtr ivar = cctxt->ivars, ivartmp;
555
556 while (ivar) {
557 ivartmp = ivar;
558 ivar = ivar->next;
559 xmlFree(ivartmp);
560 }
561 }
562
563 /**
564 * xsltCompilerCtxtFree:
565 *
566 * Free an XSLT compiler context.
567 */
568 static void
569 xsltCompilationCtxtFree(xsltCompilerCtxtPtr cctxt)
570 {
571 if (cctxt == NULL)
572 return;
573 #ifdef WITH_XSLT_DEBUG_PARSING
574 xsltGenericDebug(xsltGenericDebugContext,
575 "Freeing compilation context\n");
576 xsltGenericDebug(xsltGenericDebugContext,
577 "### Max inodes: %d\n", cctxt->maxNodeInfos);
578 xsltGenericDebug(xsltGenericDebugContext,
579 "### Max LREs : %d\n", cctxt->maxLREs);
580 #endif
581 /*
582 * Free node-infos.
583 */
584 if (cctxt->inodeList != NULL) {
585 xsltCompilerNodeInfoPtr tmp, cur = cctxt->inodeList;
586 while (cur != NULL) {
587 tmp = cur;
588 cur = cur->next;
589 xmlFree(tmp);
590 }
591 }
592 if (cctxt->tmpList != NULL)
593 xsltPointerListFree(cctxt->tmpList);
594 #ifdef XSLT_REFACTORED_XPATHCOMP
595 if (cctxt->xpathCtxt != NULL)
596 xmlXPathFreeContext(cctxt->xpathCtxt);
597 #endif
598 if (cctxt->nsAliases != NULL)
599 xsltFreeNsAliasList(cctxt->nsAliases);
600
601 if (cctxt->ivars)
602 xsltCompilerVarInfoFree(cctxt);
603
604 xmlFree(cctxt);
605 }
606
607 /**
608 * xsltCompilerCreate:
609 *
610 * Creates an XSLT compiler context.
611 *
612 * Returns the pointer to the created xsltCompilerCtxt or
613 * NULL in case of an internal error.
614 */
615 static xsltCompilerCtxtPtr
616 xsltCompilationCtxtCreate(xsltStylesheetPtr style) {
617 xsltCompilerCtxtPtr ret;
618
619 ret = (xsltCompilerCtxtPtr) xmlMalloc(sizeof(xsltCompilerCtxt));
620 if (ret == NULL) {
621 xsltTransformError(NULL, style, NULL,
622 "xsltCompilerCreate: allocation of compiler "
623 "context failed.\n");
624 return(NULL);
625 }
626 memset(ret, 0, sizeof(xsltCompilerCtxt));
627
628 ret->errSeverity = XSLT_ERROR_SEVERITY_ERROR;
629 ret->tmpList = xsltPointerListCreate(20);
630 if (ret->tmpList == NULL) {
631 goto internal_err;
632 }
633 #ifdef XSLT_REFACTORED_XPATHCOMP
634 /*
635 * Create the XPath compilation context in order
636 * to speed up precompilation of XPath expressions.
637 */
638 ret->xpathCtxt = xmlXPathNewContext(NULL);
639 if (ret->xpathCtxt == NULL)
640 goto internal_err;
641 #endif
642
643 return(ret);
644
645 internal_err:
646 xsltCompilationCtxtFree(ret);
647 return(NULL);
648 }
649
650 static void
651 xsltLREEffectiveNsNodesFree(xsltEffectiveNsPtr first)
652 {
653 xsltEffectiveNsPtr tmp;
654
655 while (first != NULL) {
656 tmp = first;
657 first = first->nextInStore;
658 xmlFree(tmp);
659 }
660 }
661
662 static void
663 xsltFreePrincipalStylesheetData(xsltPrincipalStylesheetDataPtr data)
664 {
665 if (data == NULL)
666 return;
667
668 if (data->inScopeNamespaces != NULL) {
669 int i;
670 xsltNsListContainerPtr nsi;
671 xsltPointerListPtr list =
672 (xsltPointerListPtr) data->inScopeNamespaces;
673
674 for (i = 0; i < list->number; i++) {
675 /*
676 * REVISIT TODO: Free info of in-scope namespaces.
677 */
678 nsi = (xsltNsListContainerPtr) list->items[i];
679 if (nsi->list != NULL)
680 xmlFree(nsi->list);
681 xmlFree(nsi);
682 }
683 xsltPointerListFree(list);
684 data->inScopeNamespaces = NULL;
685 }
686
687 if (data->exclResultNamespaces != NULL) {
688 int i;
689 xsltPointerListPtr list = (xsltPointerListPtr)
690 data->exclResultNamespaces;
691
692 for (i = 0; i < list->number; i++)
693 xsltPointerListFree((xsltPointerListPtr) list->items[i]);
694
695 xsltPointerListFree(list);
696 data->exclResultNamespaces = NULL;
697 }
698
699 if (data->extElemNamespaces != NULL) {
700 xsltPointerListPtr list = (xsltPointerListPtr)
701 data->extElemNamespaces;
702 int i;
703
704 for (i = 0; i < list->number; i++)
705 xsltPointerListFree((xsltPointerListPtr) list->items[i]);
706
707 xsltPointerListFree(list);
708 data->extElemNamespaces = NULL;
709 }
710 if (data->effectiveNs) {
711 xsltLREEffectiveNsNodesFree(data->effectiveNs);
712 data->effectiveNs = NULL;
713 }
714 #ifdef XSLT_REFACTORED_XSLT_NSCOMP
715 xsltFreeNamespaceMap(data->nsMap);
716 #endif
717 xmlFree(data);
718 }
719
720 static xsltPrincipalStylesheetDataPtr
721 xsltNewPrincipalStylesheetData(void)
722 {
723 xsltPrincipalStylesheetDataPtr ret;
724
725 ret = (xsltPrincipalStylesheetDataPtr)
726 xmlMalloc(sizeof(xsltPrincipalStylesheetData));
727 if (ret == NULL) {
728 xsltTransformError(NULL, NULL, NULL,
729 "xsltNewPrincipalStylesheetData: memory allocation failed.\n");
730 return(NULL);
731 }
732 memset(ret, 0, sizeof(xsltPrincipalStylesheetData));
733
734 /*
735 * Global list of in-scope namespaces.
736 */
737 ret->inScopeNamespaces = xsltPointerListCreate(-1);
738 if (ret->inScopeNamespaces == NULL)
739 goto internal_err;
740 /*
741 * Global list of excluded result ns-decls.
742 */
743 ret->exclResultNamespaces = xsltPointerListCreate(-1);
744 if (ret->exclResultNamespaces == NULL)
745 goto internal_err;
746 /*
747 * Global list of extension instruction namespace names.
748 */
749 ret->extElemNamespaces = xsltPointerListCreate(-1);
750 if (ret->extElemNamespaces == NULL)
751 goto internal_err;
752
753 return(ret);
754
755 internal_err:
756
757 return(NULL);
758 }
759
760 #endif
761
762 /**
763 * xsltNewStylesheet:
764 *
765 * Create a new XSLT Stylesheet
766 *
767 * Returns the newly allocated xsltStylesheetPtr or NULL in case of error
768 */
769 xsltStylesheetPtr
770 xsltNewStylesheet(void) {
771 xsltStylesheetPtr ret = NULL;
772
773 ret = (xsltStylesheetPtr) xmlMalloc(sizeof(xsltStylesheet));
774 if (ret == NULL) {
775 xsltTransformError(NULL, NULL, NULL,
776 "xsltNewStylesheet : malloc failed\n");
777 goto internal_err;
778 }
779 memset(ret, 0, sizeof(xsltStylesheet));
780
781 ret->omitXmlDeclaration = -1;
782 ret->standalone = -1;
783 ret->decimalFormat = xsltNewDecimalFormat(NULL, NULL);
784 ret->indent = -1;
785 ret->errors = 0;
786 ret->warnings = 0;
787 ret->exclPrefixNr = 0;
788 ret->exclPrefixMax = 0;
789 ret->exclPrefixTab = NULL;
790 ret->extInfos = NULL;
791 ret->extrasNr = 0;
792 ret->internalized = 1;
793 ret->literal_result = 0;
794 ret->forwards_compatible = 0;
795 ret->dict = xmlDictCreate();
796 #ifdef WITH_XSLT_DEBUG
797 xsltGenericDebug(xsltGenericDebugContext,
798 "creating dictionary for stylesheet\n");
799 #endif
800
801 xsltInit();
802
803 return(ret);
804
805 internal_err:
806 if (ret != NULL)
807 xsltFreeStylesheet(ret);
808 return(NULL);
809 }
810
811 /**
812 * xsltAllocateExtra:
813 * @style: an XSLT stylesheet
814 *
815 * Allocate an extra runtime information slot statically while compiling
816 * the stylesheet and return its number
817 *
818 * Returns the number of the slot
819 */
820 int
821 xsltAllocateExtra(xsltStylesheetPtr style)
822 {
823 return(style->extrasNr++);
824 }
825
826 /**
827 * xsltAllocateExtraCtxt:
828 * @ctxt: an XSLT transformation context
829 *
830 * Allocate an extra runtime information slot at run-time
831 * and return its number
832 * This make sure there is a slot ready in the transformation context
833 *
834 * Returns the number of the slot
835 */
836 int
837 xsltAllocateExtraCtxt(xsltTransformContextPtr ctxt)
838 {
839 if (ctxt->extrasNr >= ctxt->extrasMax) {
840 int i;
841 if (ctxt->extrasNr == 0) {
842 ctxt->extrasMax = 20;
843 ctxt->extras = (xsltRuntimeExtraPtr)
844 xmlMalloc(ctxt->extrasMax * sizeof(xsltRuntimeExtra));
845 if (ctxt->extras == NULL) {
846 xsltTransformError(ctxt, NULL, NULL,
847 "xsltAllocateExtraCtxt: out of memory\n");
848 return(0);
849 }
850 for (i = 0;i < ctxt->extrasMax;i++) {
851 ctxt->extras[i].info = NULL;
852 ctxt->extras[i].deallocate = NULL;
853 ctxt->extras[i].val.ptr = NULL;
854 }
855
856 } else {
857 xsltRuntimeExtraPtr tmp;
858
859 ctxt->extrasMax += 100;
860 tmp = (xsltRuntimeExtraPtr) xmlRealloc(ctxt->extras,
861 ctxt->extrasMax * sizeof(xsltRuntimeExtra));
862 if (tmp == NULL) {
863 xsltTransformError(ctxt, NULL, NULL,
864 "xsltAllocateExtraCtxt: out of memory\n");
865 return(0);
866 }
867 ctxt->extras = tmp;
868 for (i = ctxt->extrasNr;i < ctxt->extrasMax;i++) {
869 ctxt->extras[i].info = NULL;
870 ctxt->extras[i].deallocate = NULL;
871 ctxt->extras[i].val.ptr = NULL;
872 }
873 }
874 }
875 return(ctxt->extrasNr++);
876 }
877
878 /**
879 * xsltFreeStylesheetList:
880 * @style: an XSLT stylesheet list
881 *
882 * Free up the memory allocated by the list @style
883 */
884 static void
885 xsltFreeStylesheetList(xsltStylesheetPtr style) {
886 xsltStylesheetPtr next;
887
888 while (style != NULL) {
889 next = style->next;
890 xsltFreeStylesheet(style);
891 style = next;
892 }
893 }
894
895 /**
896 * xsltCleanupStylesheetTree:
897 *
898 * @doc: the document-node
899 * @node: the element where the stylesheet is rooted at
900 *
901 * Actually @node need not be the document-element, but
902 * currently Libxslt does not support embedded stylesheets.
903 *
904 * Returns 0 if OK, -1 on API or internal errors.
905 */
906 static int
907 xsltCleanupStylesheetTree(xmlDocPtr doc ATTRIBUTE_UNUSED,
908 xmlNodePtr rootElem ATTRIBUTE_UNUSED)
909 {
910 #if 0 /* TODO: Currently disabled, since probably not needed. */
911 xmlNodePtr cur;
912
913 if ((doc == NULL) || (rootElem == NULL) ||
914 (rootElem->type != XML_ELEMENT_NODE) ||
915 (doc != rootElem->doc))
916 return(-1);
917
918 /*
919 * Cleanup was suggested by Aleksey Sanin:
920 * Clear the PSVI field to avoid problems if the
921 * node-tree of the stylesheet is intended to be used for
922 * further processing by the user (e.g. for compiling it
923 * once again - although not recommended).
924 */
925
926 cur = rootElem;
927 while (cur != NULL) {
928 if (cur->type == XML_ELEMENT_NODE) {
929 /*
930 * Clear the PSVI field.
931 */
932 cur->psvi = NULL;
933 if (cur->children) {
934 cur = cur->children;
935 continue;
936 }
937 }
938
939 leave_node:
940 if (cur == rootElem)
941 break;
942 if (cur->next != NULL)
943 cur = cur->next;
944 else {
945 cur = cur->parent;
946 if (cur == NULL)
947 break;
948 goto leave_node;
949 }
950 }
951 #endif /* #if 0 */
952 return(0);
953 }
954
955 /**
956 * xsltFreeStylesheet:
957 * @style: an XSLT stylesheet
958 *
959 * Free up the memory allocated by @style
960 */
961 void
962 xsltFreeStylesheet(xsltStylesheetPtr style)
963 {
964 if (style == NULL)
965 return;
966
967 #ifdef XSLT_REFACTORED
968 /*
969 * Start with a cleanup of the main stylesheet's doc.
970 */
971 if ((style->principal == style) && (style->doc))
972 xsltCleanupStylesheetTree(style->doc,
973 xmlDocGetRootElement(style->doc));
974 #ifdef XSLT_REFACTORED_XSLT_NSCOMP
975 /*
976 * Restore changed ns-decls before freeing the document.
977 */
978 if ((style->doc != NULL) &&
979 XSLT_HAS_INTERNAL_NSMAP(style))
980 {
981 xsltRestoreDocumentNamespaces(XSLT_GET_INTERNAL_NSMAP(style),
982 style->doc);
983 }
984 #endif /* XSLT_REFACTORED_XSLT_NSCOMP */
985 #else
986 /*
987 * Start with a cleanup of the main stylesheet's doc.
988 */
989 if ((style->parent == NULL) && (style->doc))
990 xsltCleanupStylesheetTree(style->doc,
991 xmlDocGetRootElement(style->doc));
992 #endif /* XSLT_REFACTORED */
993
994 xsltFreeKeys(style);
995 xsltFreeExts(style);
996 xsltFreeTemplateHashes(style);
997 xsltFreeDecimalFormatList(style);
998 xsltFreeTemplateList(style->templates);
999 xsltFreeAttributeSetsHashes(style);
1000 xsltFreeNamespaceAliasHashes(style);
1001 xsltFreeStylePreComps(style);
1002 /*
1003 * Free documents of all included stylsheet modules of this
1004 * stylesheet level.
1005 */
1006 xsltFreeStyleDocuments(style);
1007 /*
1008 * TODO: Best time to shutdown extension stuff?
1009 */
1010 xsltShutdownExts(style);
1011
1012 if (style->variables != NULL)
1013 xsltFreeStackElemList(style->variables);
1014 if (style->cdataSection != NULL)
1015 xmlHashFree(style->cdataSection, NULL);
1016 if (style->stripSpaces != NULL)
1017 xmlHashFree(style->stripSpaces, NULL);
1018 if (style->nsHash != NULL)
1019 xmlHashFree(style->nsHash, NULL);
1020 if (style->exclPrefixTab != NULL)
1021 xmlFree(style->exclPrefixTab);
1022 if (style->method != NULL)
1023 xmlFree(style->method);
1024 if (style->methodURI != NULL)
1025 xmlFree(style->methodURI);
1026 if (style->version != NULL)
1027 xmlFree(style->version);
1028 if (style->encoding != NULL)
1029 xmlFree(style->encoding);
1030 if (style->doctypePublic != NULL)
1031 xmlFree(style->doctypePublic);
1032 if (style->doctypeSystem != NULL)
1033 xmlFree(style->doctypeSystem);
1034 if (style->mediaType != NULL)
1035 xmlFree(style->mediaType);
1036 if (style->attVTs)
1037 xsltFreeAVTList(style->attVTs);
1038 if (style->imports != NULL)
1039 xsltFreeStylesheetList(style->imports);
1040
1041 #ifdef XSLT_REFACTORED
1042 /*
1043 * If this is the principal stylesheet, then
1044 * free its internal data.
1045 */
1046 if (style->principal == style) {
1047 if (style->principalData) {
1048 xsltFreePrincipalStylesheetData(style->principalData);
1049 style->principalData = NULL;
1050 }
1051 }
1052 #endif
1053 /*
1054 * Better to free the main document of this stylesheet level
1055 * at the end - so here.
1056 */
1057 if (style->doc != NULL) {
1058 xmlFreeDoc(style->doc);
1059 }
1060
1061 #ifdef WITH_XSLT_DEBUG
1062 xsltGenericDebug(xsltGenericDebugContext,
1063 "freeing dictionary from stylesheet\n");
1064 #endif
1065 xmlDictFree(style->dict);
1066
1067 memset(style, -1, sizeof(xsltStylesheet));
1068 xmlFree(style);
1069 }
1070
1071 /************************************************************************
1072 * *
1073 * Parsing of an XSLT Stylesheet *
1074 * *
1075 ************************************************************************/
1076
1077 #ifdef XSLT_REFACTORED
1078 /*
1079 * This is now performed in an optimized way in xsltParseXSLTTemplate.
1080 */
1081 #else
1082 /**
1083 * xsltGetInheritedNsList:
1084 * @style: the stylesheet
1085 * @template: the template
1086 * @node: the current node
1087 *
1088 * Search all the namespace applying to a given element except the ones
1089 * from excluded output prefixes currently in scope. Initialize the
1090 * template inheritedNs list with it.
1091 *
1092 * Returns the number of entries found
1093 */
1094 static int
1095 xsltGetInheritedNsList(xsltStylesheetPtr style,
1096 xsltTemplatePtr template,
1097 xmlNodePtr node)
1098 {
1099 xmlNsPtr cur;
1100 xmlNsPtr *ret = NULL;
1101 int nbns = 0;
1102 int maxns = 10;
1103 int i;
1104
1105 if ((style == NULL) || (template == NULL) || (node == NULL) ||
1106 (template->inheritedNsNr != 0) || (template->inheritedNs != NULL))
1107 return(0);
1108 while (node != NULL) {
1109 if (node->type == XML_ELEMENT_NODE) {
1110 cur = node->nsDef;
1111 while (cur != NULL) {
1112 if (xmlStrEqual(cur->href, XSLT_NAMESPACE))
1113 goto skip_ns;
1114
1115 if ((cur->prefix != NULL) &&
1116 (xsltCheckExtPrefix(style, cur->prefix)))
1117 goto skip_ns;
1118 /*
1119 * Check if this namespace was excluded.
1120 * Note that at this point only the exclusions defined
1121 * on the topmost stylesheet element are in the exclusion-list.
1122 */
1123 for (i = 0;i < style->exclPrefixNr;i++) {
1124 if (xmlStrEqual(cur->href, style->exclPrefixTab[i]))
1125 goto skip_ns;
1126 }
1127 if (ret == NULL) {
1128 ret =
1129 (xmlNsPtr *) xmlMalloc((maxns + 1) *
1130 sizeof(xmlNsPtr));
1131 if (ret == NULL) {
1132 xmlGenericError(xmlGenericErrorContext,
1133 "xsltGetInheritedNsList : out of memory! \n");
1134 return(0);
1135 }
1136 ret[nbns] = NULL;
1137 }
1138 /*
1139 * Skip shadowed namespace bindings.
1140 */
1141 for (i = 0; i < nbns; i++) {
1142 if ((cur->prefix == ret[i]->prefix) ||
1143 (xmlStrEqual(cur->prefix, ret[i]->prefix)))
1144 break;
1145 }
1146 if (i >= nbns) {
1147 if (nbns >= maxns) {
1148 maxns *= 2;
1149 ret = (xmlNsPtr *) xmlRealloc(ret,
1150 (maxns +
1151 1) *
1152 sizeof(xmlNsPtr));
1153 if (ret == NULL) {
1154 xmlGenericError(xmlGenericErrorContext,
1155 "xsltGetInheritedNsList : realloc fa iled!\n");
1156 return(0);
1157 }
1158 }
1159 ret[nbns++] = cur;
1160 ret[nbns] = NULL;
1161 }
1162 skip_ns:
1163 cur = cur->next;
1164 }
1165 }
1166 node = node->parent;
1167 }
1168 if (nbns != 0) {
1169 #ifdef WITH_XSLT_DEBUG_PARSING
1170 xsltGenericDebug(xsltGenericDebugContext,
1171 "template has %d inherited namespaces\n", nbns);
1172 #endif
1173 template->inheritedNsNr = nbns;
1174 template->inheritedNs = ret;
1175 }
1176 return (nbns);
1177 }
1178 #endif /* else of XSLT_REFACTORED */
1179
1180 /**
1181 * xsltParseStylesheetOutput:
1182 * @style: the XSLT stylesheet
1183 * @cur: the "output" element
1184 *
1185 * parse an XSLT stylesheet output element and record
1186 * information related to the stylesheet output
1187 */
1188
1189 void
1190 xsltParseStylesheetOutput(xsltStylesheetPtr style, xmlNodePtr cur)
1191 {
1192 xmlChar *elements,
1193 *prop;
1194 xmlChar *element,
1195 *end;
1196
1197 if ((cur == NULL) || (style == NULL) || (cur->type != XML_ELEMENT_NODE))
1198 return;
1199
1200 prop = xmlGetNsProp(cur, (const xmlChar *) "version", NULL);
1201 if (prop != NULL) {
1202 if (style->version != NULL)
1203 xmlFree(style->version);
1204 style->version = prop;
1205 }
1206
1207 prop = xmlGetNsProp(cur, (const xmlChar *) "encoding", NULL);
1208 if (prop != NULL) {
1209 if (style->encoding != NULL)
1210 xmlFree(style->encoding);
1211 style->encoding = prop;
1212 }
1213
1214 /* relaxed to support xt:document
1215 * TODO KB: What does "relaxed to support xt:document" mean?
1216 */
1217 prop = xmlGetNsProp(cur, (const xmlChar *) "method", NULL);
1218 if (prop != NULL) {
1219 const xmlChar *URI;
1220
1221 if (style->method != NULL)
1222 xmlFree(style->method);
1223 style->method = NULL;
1224 if (style->methodURI != NULL)
1225 xmlFree(style->methodURI);
1226 style->methodURI = NULL;
1227
1228 /*
1229 * TODO: Don't use xsltGetQNameURI().
1230 */
1231 URI = xsltGetQNameURI(cur, &prop);
1232 if (prop == NULL) {
1233 if (style != NULL) style->errors++;
1234 } else if (URI == NULL) {
1235 if ((xmlStrEqual(prop, (const xmlChar *) "xml")) ||
1236 (xmlStrEqual(prop, (const xmlChar *) "html")) ||
1237 (xmlStrEqual(prop, (const xmlChar *) "text"))) {
1238 style->method = prop;
1239 } else {
1240 xsltTransformError(NULL, style, cur,
1241 "invalid value for method: %s\n", prop);
1242 if (style != NULL) style->warnings++;
1243 }
1244 } else {
1245 style->method = prop;
1246 style->methodURI = xmlStrdup(URI);
1247 }
1248 }
1249
1250 prop = xmlGetNsProp(cur, (const xmlChar *) "doctype-system", NULL);
1251 if (prop != NULL) {
1252 if (style->doctypeSystem != NULL)
1253 xmlFree(style->doctypeSystem);
1254 style->doctypeSystem = prop;
1255 }
1256
1257 prop = xmlGetNsProp(cur, (const xmlChar *) "doctype-public", NULL);
1258 if (prop != NULL) {
1259 if (style->doctypePublic != NULL)
1260 xmlFree(style->doctypePublic);
1261 style->doctypePublic = prop;
1262 }
1263
1264 prop = xmlGetNsProp(cur, (const xmlChar *) "standalone", NULL);
1265 if (prop != NULL) {
1266 if (xmlStrEqual(prop, (const xmlChar *) "yes")) {
1267 style->standalone = 1;
1268 } else if (xmlStrEqual(prop, (const xmlChar *) "no")) {
1269 style->standalone = 0;
1270 } else {
1271 xsltTransformError(NULL, style, cur,
1272 "invalid value for standalone: %s\n", prop);
1273 style->errors++;
1274 }
1275 xmlFree(prop);
1276 }
1277
1278 prop = xmlGetNsProp(cur, (const xmlChar *) "indent", NULL);
1279 if (prop != NULL) {
1280 if (xmlStrEqual(prop, (const xmlChar *) "yes")) {
1281 style->indent = 1;
1282 } else if (xmlStrEqual(prop, (const xmlChar *) "no")) {
1283 style->indent = 0;
1284 } else {
1285 xsltTransformError(NULL, style, cur,
1286 "invalid value for indent: %s\n", prop);
1287 style->errors++;
1288 }
1289 xmlFree(prop);
1290 }
1291
1292 prop = xmlGetNsProp(cur, (const xmlChar *) "omit-xml-declaration", NULL);
1293 if (prop != NULL) {
1294 if (xmlStrEqual(prop, (const xmlChar *) "yes")) {
1295 style->omitXmlDeclaration = 1;
1296 } else if (xmlStrEqual(prop, (const xmlChar *) "no")) {
1297 style->omitXmlDeclaration = 0;
1298 } else {
1299 xsltTransformError(NULL, style, cur,
1300 "invalid value for omit-xml-declaration: %s\n",
1301 prop);
1302 style->errors++;
1303 }
1304 xmlFree(prop);
1305 }
1306
1307 elements = xmlGetNsProp(cur, (const xmlChar *) "cdata-section-elements",
1308 NULL);
1309 if (elements != NULL) {
1310 if (style->cdataSection == NULL)
1311 style->cdataSection = xmlHashCreate(10);
1312 if (style->cdataSection == NULL)
1313 return;
1314
1315 element = elements;
1316 while (*element != 0) {
1317 while (IS_BLANK(*element))
1318 element++;
1319 if (*element == 0)
1320 break;
1321 end = element;
1322 while ((*end != 0) && (!IS_BLANK(*end)))
1323 end++;
1324 element = xmlStrndup(element, end - element);
1325 if (element) {
1326 #ifdef WITH_XSLT_DEBUG_PARSING
1327 xsltGenericDebug(xsltGenericDebugContext,
1328 "add cdata section output element %s\n",
1329 element);
1330 #endif
1331 if (xmlValidateQName(BAD_CAST element, 0) != 0) {
1332 xsltTransformError(NULL, style, cur,
1333 "Attribute 'cdata-section-elements': The value "
1334 "'%s' is not a valid QName.\n", element);
1335 xmlFree(element);
1336 style->errors++;
1337 } else {
1338 const xmlChar *URI;
1339
1340 /*
1341 * TODO: Don't use xsltGetQNameURI().
1342 */
1343 URI = xsltGetQNameURI(cur, &element);
1344 if (element == NULL) {
1345 /*
1346 * TODO: We'll report additionally an error
1347 * via the stylesheet's error handling.
1348 */
1349 xsltTransformError(NULL, style, cur,
1350 "Attribute 'cdata-section-elements': The value "
1351 "'%s' is not a valid QName.\n", element);
1352 style->errors++;
1353 } else {
1354 xmlNsPtr ns;
1355
1356 /*
1357 * XSLT-1.0 "Each QName is expanded into an
1358 * expanded-name using the namespace declarations in
1359 * effect on the xsl:output element in which the QName
1360 * occurs; if there is a default namespace, it is used
1361 * for QNames that do not have a prefix"
1362 * NOTE: Fix of bug #339570.
1363 */
1364 if (URI == NULL) {
1365 ns = xmlSearchNs(style->doc, cur, NULL);
1366 if (ns != NULL)
1367 URI = ns->href;
1368 }
1369 xmlHashAddEntry2(style->cdataSection, element, URI,
1370 (void *) "cdata");
1371 xmlFree(element);
1372 }
1373 }
1374 }
1375 element = end;
1376 }
1377 xmlFree(elements);
1378 }
1379
1380 prop = xmlGetNsProp(cur, (const xmlChar *) "media-type", NULL);
1381 if (prop != NULL) {
1382 if (style->mediaType)
1383 xmlFree(style->mediaType);
1384 style->mediaType = prop;
1385 }
1386 if (cur->children != NULL) {
1387 xsltParseContentError(style, cur->children);
1388 }
1389 }
1390
1391 /**
1392 * xsltParseStylesheetDecimalFormat:
1393 * @style: the XSLT stylesheet
1394 * @cur: the "decimal-format" element
1395 *
1396 * <!-- Category: top-level-element -->
1397 * <xsl:decimal-format
1398 * name = qname, decimal-separator = char, grouping-separator = char,
1399 * infinity = string, minus-sign = char, NaN = string, percent = char
1400 * per-mille = char, zero-digit = char, digit = char,
1401 * pattern-separator = char />
1402 *
1403 * parse an XSLT stylesheet decimal-format element and
1404 * and record the formatting characteristics
1405 */
1406 static void
1407 xsltParseStylesheetDecimalFormat(xsltStylesheetPtr style, xmlNodePtr cur)
1408 {
1409 xmlChar *prop;
1410 xsltDecimalFormatPtr format;
1411 xsltDecimalFormatPtr iter;
1412
1413 if ((cur == NULL) || (style == NULL) || (cur->type != XML_ELEMENT_NODE))
1414 return;
1415
1416 format = style->decimalFormat;
1417
1418 prop = xmlGetNsProp(cur, BAD_CAST("name"), NULL);
1419 if (prop != NULL) {
1420 const xmlChar *nsUri;
1421
1422 if (xmlValidateQName(prop, 0) != 0) {
1423 xsltTransformError(NULL, style, cur,
1424 "xsl:decimal-format: Invalid QName '%s'.\n", prop);
1425 style->warnings++;
1426 xmlFree(prop);
1427 return;
1428 }
1429 /*
1430 * TODO: Don't use xsltGetQNameURI().
1431 */
1432 nsUri = xsltGetQNameURI(cur, &prop);
1433 if (prop == NULL) {
1434 style->warnings++;
1435 return;
1436 }
1437 format = xsltDecimalFormatGetByQName(style, nsUri, prop);
1438 if (format != NULL) {
1439 xsltTransformError(NULL, style, cur,
1440 "xsltParseStylestyleDecimalFormat: %s already exists\n", prop);
1441 style->warnings++;
1442 xmlFree(prop);
1443 return;
1444 }
1445 format = xsltNewDecimalFormat(nsUri, prop);
1446 if (format == NULL) {
1447 xsltTransformError(NULL, style, cur,
1448 "xsltParseStylestyleDecimalFormat: failed creating new decimal-format\n");
1449 style->errors++;
1450 xmlFree(prop);
1451 return;
1452 }
1453 /* Append new decimal-format structure */
1454 for (iter = style->decimalFormat; iter->next; iter = iter->next)
1455 ;
1456 if (iter)
1457 iter->next = format;
1458 }
1459
1460 prop = xmlGetNsProp(cur, (const xmlChar *)"decimal-separator", NULL);
1461 if (prop != NULL) {
1462 if (format->decimalPoint != NULL) xmlFree(format->decimalPoint);
1463 format->decimalPoint = prop;
1464 }
1465
1466 prop = xmlGetNsProp(cur, (const xmlChar *)"grouping-separator", NULL);
1467 if (prop != NULL) {
1468 if (format->grouping != NULL) xmlFree(format->grouping);
1469 format->grouping = prop;
1470 }
1471
1472 prop = xmlGetNsProp(cur, (const xmlChar *)"infinity", NULL);
1473 if (prop != NULL) {
1474 if (format->infinity != NULL) xmlFree(format->infinity);
1475 format->infinity = prop;
1476 }
1477
1478 prop = xmlGetNsProp(cur, (const xmlChar *)"minus-sign", NULL);
1479 if (prop != NULL) {
1480 if (format->minusSign != NULL) xmlFree(format->minusSign);
1481 format->minusSign = prop;
1482 }
1483
1484 prop = xmlGetNsProp(cur, (const xmlChar *)"NaN", NULL);
1485 if (prop != NULL) {
1486 if (format->noNumber != NULL) xmlFree(format->noNumber);
1487 format->noNumber = prop;
1488 }
1489
1490 prop = xmlGetNsProp(cur, (const xmlChar *)"percent", NULL);
1491 if (prop != NULL) {
1492 if (format->percent != NULL) xmlFree(format->percent);
1493 format->percent = prop;
1494 }
1495
1496 prop = xmlGetNsProp(cur, (const xmlChar *)"per-mille", NULL);
1497 if (prop != NULL) {
1498 if (format->permille != NULL) xmlFree(format->permille);
1499 format->permille = prop;
1500 }
1501
1502 prop = xmlGetNsProp(cur, (const xmlChar *)"zero-digit", NULL);
1503 if (prop != NULL) {
1504 if (format->zeroDigit != NULL) xmlFree(format->zeroDigit);
1505 format->zeroDigit = prop;
1506 }
1507
1508 prop = xmlGetNsProp(cur, (const xmlChar *)"digit", NULL);
1509 if (prop != NULL) {
1510 if (format->digit != NULL) xmlFree(format->digit);
1511 format->digit = prop;
1512 }
1513
1514 prop = xmlGetNsProp(cur, (const xmlChar *)"pattern-separator", NULL);
1515 if (prop != NULL) {
1516 if (format->patternSeparator != NULL) xmlFree(format->patternSeparator);
1517 format->patternSeparator = prop;
1518 }
1519 if (cur->children != NULL) {
1520 xsltParseContentError(style, cur->children);
1521 }
1522 }
1523
1524 /**
1525 * xsltParseStylesheetPreserveSpace:
1526 * @style: the XSLT stylesheet
1527 * @cur: the "preserve-space" element
1528 *
1529 * parse an XSLT stylesheet preserve-space element and record
1530 * elements needing preserving
1531 */
1532
1533 static void
1534 xsltParseStylesheetPreserveSpace(xsltStylesheetPtr style, xmlNodePtr cur) {
1535 xmlChar *elements;
1536 xmlChar *element, *end;
1537
1538 if ((cur == NULL) || (style == NULL) || (cur->type != XML_ELEMENT_NODE))
1539 return;
1540
1541 elements = xmlGetNsProp(cur, (const xmlChar *)"elements", NULL);
1542 if (elements == NULL) {
1543 xsltTransformError(NULL, style, cur,
1544 "xsltParseStylesheetPreserveSpace: missing elements attribute\n");
1545 if (style != NULL) style->warnings++;
1546 return;
1547 }
1548
1549 if (style->stripSpaces == NULL)
1550 style->stripSpaces = xmlHashCreate(10);
1551 if (style->stripSpaces == NULL)
1552 return;
1553
1554 element = elements;
1555 while (*element != 0) {
1556 while (IS_BLANK(*element)) element++;
1557 if (*element == 0)
1558 break;
1559 end = element;
1560 while ((*end != 0) && (!IS_BLANK(*end))) end++;
1561 element = xmlStrndup(element, end - element);
1562 if (element) {
1563 #ifdef WITH_XSLT_DEBUG_PARSING
1564 xsltGenericDebug(xsltGenericDebugContext,
1565 "add preserved space element %s\n", element);
1566 #endif
1567 if (xmlStrEqual(element, (const xmlChar *)"*")) {
1568 style->stripAll = -1;
1569 } else {
1570 const xmlChar *URI;
1571
1572 /*
1573 * TODO: Don't use xsltGetQNameURI().
1574 */
1575 URI = xsltGetQNameURI(cur, &element);
1576
1577 xmlHashAddEntry2(style->stripSpaces, element, URI,
1578 (xmlChar *) "preserve");
1579 }
1580 xmlFree(element);
1581 }
1582 element = end;
1583 }
1584 xmlFree(elements);
1585 if (cur->children != NULL) {
1586 xsltParseContentError(style, cur->children);
1587 }
1588 }
1589
1590 #ifdef XSLT_REFACTORED
1591 #else
1592 /**
1593 * xsltParseStylesheetExtPrefix:
1594 * @style: the XSLT stylesheet
1595 * @template: the "extension-element-prefixes" prefix
1596 *
1597 * parse an XSLT stylesheet's "extension-element-prefix" attribute value
1598 * and register the namespaces of extension instruction.
1599 * SPEC "A namespace is designated as an extension namespace by using
1600 * an extension-element-prefixes attribute on:
1601 * 1) an xsl:stylesheet element
1602 * 2) an xsl:extension-element-prefixes attribute on a
1603 * literal result element
1604 * 3) an extension instruction."
1605 */
1606 static void
1607 xsltParseStylesheetExtPrefix(xsltStylesheetPtr style, xmlNodePtr cur,
1608 int isXsltElem) {
1609 xmlChar *prefixes;
1610 xmlChar *prefix, *end;
1611
1612 if ((cur == NULL) || (style == NULL) || (cur->type != XML_ELEMENT_NODE))
1613 return;
1614
1615 if (isXsltElem) {
1616 /* For xsl:stylesheet/xsl:transform. */
1617 prefixes = xmlGetNsProp(cur,
1618 (const xmlChar *)"extension-element-prefixes", NULL);
1619 } else {
1620 /* For literal result elements and extension instructions. */
1621 prefixes = xmlGetNsProp(cur,
1622 (const xmlChar *)"extension-element-prefixes", XSLT_NAMESPACE);
1623 }
1624 if (prefixes == NULL) {
1625 return;
1626 }
1627
1628 prefix = prefixes;
1629 while (*prefix != 0) {
1630 while (IS_BLANK(*prefix)) prefix++;
1631 if (*prefix == 0)
1632 break;
1633 end = prefix;
1634 while ((*end != 0) && (!IS_BLANK(*end))) end++;
1635 prefix = xmlStrndup(prefix, end - prefix);
1636 if (prefix) {
1637 xmlNsPtr ns;
1638
1639 if (xmlStrEqual(prefix, (const xmlChar *)"#default"))
1640 ns = xmlSearchNs(style->doc, cur, NULL);
1641 else
1642 ns = xmlSearchNs(style->doc, cur, prefix);
1643 if (ns == NULL) {
1644 xsltTransformError(NULL, style, cur,
1645 "xsl:extension-element-prefix : undefined namespace %s\n",
1646 prefix);
1647 if (style != NULL) style->warnings++;
1648 } else {
1649 #ifdef WITH_XSLT_DEBUG_PARSING
1650 xsltGenericDebug(xsltGenericDebugContext,
1651 "add extension prefix %s\n", prefix);
1652 #endif
1653 xsltRegisterExtPrefix(style, prefix, ns->href);
1654 }
1655 xmlFree(prefix);
1656 }
1657 prefix = end;
1658 }
1659 xmlFree(prefixes);
1660 }
1661 #endif /* else of XSLT_REFACTORED */
1662
1663 /**
1664 * xsltParseStylesheetStripSpace:
1665 * @style: the XSLT stylesheet
1666 * @cur: the "strip-space" element
1667 *
1668 * parse an XSLT stylesheet's strip-space element and record
1669 * the elements needing stripping
1670 */
1671
1672 static void
1673 xsltParseStylesheetStripSpace(xsltStylesheetPtr style, xmlNodePtr cur) {
1674 xmlChar *elements;
1675 xmlChar *element, *end;
1676
1677 if ((cur == NULL) || (style == NULL) || (cur->type != XML_ELEMENT_NODE))
1678 return;
1679
1680 elements = xmlGetNsProp(cur, (const xmlChar *)"elements", NULL);
1681 if (elements == NULL) {
1682 xsltTransformError(NULL, style, cur,
1683 "xsltParseStylesheetStripSpace: missing elements attribute\n");
1684 if (style != NULL) style->warnings++;
1685 return;
1686 }
1687
1688 if (style->stripSpaces == NULL)
1689 style->stripSpaces = xmlHashCreate(10);
1690 if (style->stripSpaces == NULL)
1691 return;
1692
1693 element = elements;
1694 while (*element != 0) {
1695 while (IS_BLANK(*element)) element++;
1696 if (*element == 0)
1697 break;
1698 end = element;
1699 while ((*end != 0) && (!IS_BLANK(*end))) end++;
1700 element = xmlStrndup(element, end - element);
1701 if (element) {
1702 #ifdef WITH_XSLT_DEBUG_PARSING
1703 xsltGenericDebug(xsltGenericDebugContext,
1704 "add stripped space element %s\n", element);
1705 #endif
1706 if (xmlStrEqual(element, (const xmlChar *)"*")) {
1707 style->stripAll = 1;
1708 } else {
1709 const xmlChar *URI;
1710
1711 /*
1712 * TODO: Don't use xsltGetQNameURI().
1713 */
1714 URI = xsltGetQNameURI(cur, &element);
1715
1716 xmlHashAddEntry2(style->stripSpaces, element, URI,
1717 (xmlChar *) "strip");
1718 }
1719 xmlFree(element);
1720 }
1721 element = end;
1722 }
1723 xmlFree(elements);
1724 if (cur->children != NULL) {
1725 xsltParseContentError(style, cur->children);
1726 }
1727 }
1728
1729 #ifdef XSLT_REFACTORED
1730 #else
1731 /**
1732 * xsltParseStylesheetExcludePrefix:
1733 * @style: the XSLT stylesheet
1734 * @cur: the current point in the stylesheet
1735 *
1736 * parse an XSLT stylesheet exclude prefix and record
1737 * namespaces needing stripping
1738 *
1739 * Returns the number of Excluded prefixes added at that level
1740 */
1741
1742 static int
1743 xsltParseStylesheetExcludePrefix(xsltStylesheetPtr style, xmlNodePtr cur,
1744 int isXsltElem)
1745 {
1746 int nb = 0;
1747 xmlChar *prefixes;
1748 xmlChar *prefix, *end;
1749
1750 if ((cur == NULL) || (style == NULL) || (cur->type != XML_ELEMENT_NODE))
1751 return(0);
1752
1753 if (isXsltElem)
1754 prefixes = xmlGetNsProp(cur,
1755 (const xmlChar *)"exclude-result-prefixes", NULL);
1756 else
1757 prefixes = xmlGetNsProp(cur,
1758 (const xmlChar *)"exclude-result-prefixes", XSLT_NAMESPACE);
1759
1760 if (prefixes == NULL) {
1761 return(0);
1762 }
1763
1764 prefix = prefixes;
1765 while (*prefix != 0) {
1766 while (IS_BLANK(*prefix)) prefix++;
1767 if (*prefix == 0)
1768 break;
1769 end = prefix;
1770 while ((*end != 0) && (!IS_BLANK(*end))) end++;
1771 prefix = xmlStrndup(prefix, end - prefix);
1772 if (prefix) {
1773 xmlNsPtr ns;
1774
1775 if (xmlStrEqual(prefix, (const xmlChar *)"#default"))
1776 ns = xmlSearchNs(style->doc, cur, NULL);
1777 else
1778 ns = xmlSearchNs(style->doc, cur, prefix);
1779 if (ns == NULL) {
1780 xsltTransformError(NULL, style, cur,
1781 "xsl:exclude-result-prefixes : undefined namespace %s\n",
1782 prefix);
1783 if (style != NULL) style->warnings++;
1784 } else {
1785 if (exclPrefixPush(style, (xmlChar *) ns->href) >= 0) {
1786 #ifdef WITH_XSLT_DEBUG_PARSING
1787 xsltGenericDebug(xsltGenericDebugContext,
1788 "exclude result prefix %s\n", prefix);
1789 #endif
1790 nb++;
1791 }
1792 }
1793 xmlFree(prefix);
1794 }
1795 prefix = end;
1796 }
1797 xmlFree(prefixes);
1798 return(nb);
1799 }
1800 #endif /* else of XSLT_REFACTORED */
1801
1802 #ifdef XSLT_REFACTORED
1803
1804 /*
1805 * xsltTreeEnsureXMLDecl:
1806 * @doc: the doc
1807 *
1808 * BIG NOTE:
1809 * This was copy&pasted from Libxml2's xmlTreeEnsureXMLDecl() in "tree.c".
1810 * Ensures that there is an XML namespace declaration on the doc.
1811 *
1812 * Returns the XML ns-struct or NULL on API and internal errors.
1813 */
1814 static xmlNsPtr
1815 xsltTreeEnsureXMLDecl(xmlDocPtr doc)
1816 {
1817 if (doc == NULL)
1818 return (NULL);
1819 if (doc->oldNs != NULL)
1820 return (doc->oldNs);
1821 {
1822 xmlNsPtr ns;
1823 ns = (xmlNsPtr) xmlMalloc(sizeof(xmlNs));
1824 if (ns == NULL) {
1825 xmlGenericError(xmlGenericErrorContext,
1826 "xsltTreeEnsureXMLDecl: Failed to allocate "
1827 "the XML namespace.\n");
1828 return (NULL);
1829 }
1830 memset(ns, 0, sizeof(xmlNs));
1831 ns->type = XML_LOCAL_NAMESPACE;
1832 /*
1833 * URGENT TODO: revisit this.
1834 */
1835 #ifdef LIBXML_NAMESPACE_DICT
1836 if (doc->dict)
1837 ns->href = xmlDictLookup(doc->dict, XML_XML_NAMESPACE, -1);
1838 else
1839 ns->href = xmlStrdup(XML_XML_NAMESPACE);
1840 #else
1841 ns->href = xmlStrdup(XML_XML_NAMESPACE);
1842 #endif
1843 ns->prefix = xmlStrdup((const xmlChar *)"xml");
1844 doc->oldNs = ns;
1845 return (ns);
1846 }
1847 }
1848
1849 /*
1850 * xsltTreeAcquireStoredNs:
1851 * @doc: the doc
1852 * @nsName: the namespace name
1853 * @prefix: the prefix
1854 *
1855 * BIG NOTE:
1856 * This was copy&pasted from Libxml2's xmlDOMWrapStoreNs() in "tree.c".
1857 * Creates or reuses an xmlNs struct on doc->oldNs with
1858 * the given prefix and namespace name.
1859 *
1860 * Returns the aquired ns struct or NULL in case of an API
1861 * or internal error.
1862 */
1863 static xmlNsPtr
1864 xsltTreeAcquireStoredNs(xmlDocPtr doc,
1865 const xmlChar *nsName,
1866 const xmlChar *prefix)
1867 {
1868 xmlNsPtr ns;
1869
1870 if (doc == NULL)
1871 return (NULL);
1872 if (doc->oldNs != NULL)
1873 ns = doc->oldNs;
1874 else
1875 ns = xsltTreeEnsureXMLDecl(doc);
1876 if (ns == NULL)
1877 return (NULL);
1878 if (ns->next != NULL) {
1879 /* Reuse. */
1880 ns = ns->next;
1881 while (ns != NULL) {
1882 if ((ns->prefix == NULL) != (prefix == NULL)) {
1883 /* NOP */
1884 } else if (prefix == NULL) {
1885 if (xmlStrEqual(ns->href, nsName))
1886 return (ns);
1887 } else {
1888 if ((ns->prefix[0] == prefix[0]) &&
1889 xmlStrEqual(ns->prefix, prefix) &&
1890 xmlStrEqual(ns->href, nsName))
1891 return (ns);
1892
1893 }
1894 if (ns->next == NULL)
1895 break;
1896 ns = ns->next;
1897 }
1898 }
1899 /* Create. */
1900 ns->next = xmlNewNs(NULL, nsName, prefix);
1901 return (ns->next);
1902 }
1903
1904 /**
1905 * xsltLREBuildEffectiveNs:
1906 *
1907 * Apply ns-aliasing on the namespace of the given @elem and
1908 * its attributes.
1909 */
1910 static int
1911 xsltLREBuildEffectiveNs(xsltCompilerCtxtPtr cctxt,
1912 xmlNodePtr elem)
1913 {
1914 xmlNsPtr ns;
1915 xsltNsAliasPtr alias;
1916
1917 if ((cctxt == NULL) || (elem == NULL))
1918 return(-1);
1919 if ((cctxt->nsAliases == NULL) || (! cctxt->hasNsAliases))
1920 return(0);
1921
1922 alias = cctxt->nsAliases;
1923 while (alias != NULL) {
1924 if ( /* If both namespaces are NULL... */
1925 ( (elem->ns == NULL) &&
1926 ((alias->literalNs == NULL) ||
1927 (alias->literalNs->href == NULL)) ) ||
1928 /* ... or both namespace are equal */
1929 ( (elem->ns != NULL) &&
1930 (alias->literalNs != NULL) &&
1931 xmlStrEqual(elem->ns->href, alias->literalNs->href) ) )
1932 {
1933 if ((alias->targetNs != NULL) &&
1934 (alias->targetNs->href != NULL))
1935 {
1936 /*
1937 * Convert namespace.
1938 */
1939 if (elem->doc == alias->docOfTargetNs) {
1940 /*
1941 * This is the nice case: same docs.
1942 * This will eventually assign a ns-decl which
1943 * is shadowed, but this has no negative effect on
1944 * the generation of the result tree.
1945 */
1946 elem->ns = alias->targetNs;
1947 } else {
1948 /*
1949 * This target xmlNs originates from a different
1950 * stylesheet tree. Try to locate it in the
1951 * in-scope namespaces.
1952 * OPTIMIZE TODO: Use the compiler-node-info inScopeNs.
1953 */
1954 ns = xmlSearchNs(elem->doc, elem,
1955 alias->targetNs->prefix);
1956 /*
1957 * If no matching ns-decl found, then assign a
1958 * ns-decl stored in xmlDoc.
1959 */
1960 if ((ns == NULL) ||
1961 (! xmlStrEqual(ns->href, alias->targetNs->href)))
1962 {
1963 /*
1964 * BIG NOTE: The use of xsltTreeAcquireStoredNs()
1965 * is not very efficient, but currently I don't
1966 * see an other way of *safely* changing a node's
1967 * namespace, since the xmlNs struct in
1968 * alias->targetNs might come from an other
1969 * stylesheet tree. So we need to anchor it in the
1970 * current document, without adding it to the tree,
1971 * which would otherwise change the in-scope-ns
1972 * semantic of the tree.
1973 */
1974 ns = xsltTreeAcquireStoredNs(elem->doc,
1975 alias->targetNs->href,
1976 alias->targetNs->prefix);
1977
1978 if (ns == NULL) {
1979 xsltTransformError(NULL, cctxt->style, elem,
1980 "Internal error in "
1981 "xsltLREBuildEffectiveNs(): "
1982 "failed to acquire a stored "
1983 "ns-declaration.\n");
1984 cctxt->style->errors++;
1985 return(-1);
1986
1987 }
1988 }
1989 elem->ns = ns;
1990 }
1991 } else {
1992 /*
1993 * Move into or leave in the NULL namespace.
1994 */
1995 elem->ns = NULL;
1996 }
1997 break;
1998 }
1999 alias = alias->next;
2000 }
2001 /*
2002 * Same with attributes of literal result elements.
2003 */
2004 if (elem->properties != NULL) {
2005 xmlAttrPtr attr = elem->properties;
2006
2007 while (attr != NULL) {
2008 if (attr->ns == NULL) {
2009 attr = attr->next;
2010 continue;
2011 }
2012 alias = cctxt->nsAliases;
2013 while (alias != NULL) {
2014 if ( /* If both namespaces are NULL... */
2015 ( (elem->ns == NULL) &&
2016 ((alias->literalNs == NULL) ||
2017 (alias->literalNs->href == NULL)) ) ||
2018 /* ... or both namespace are equal */
2019 ( (elem->ns != NULL) &&
2020 (alias->literalNs != NULL) &&
2021 xmlStrEqual(elem->ns->href, alias->literalNs->href) ) )
2022 {
2023 if ((alias->targetNs != NULL) &&
2024 (alias->targetNs->href != NULL))
2025 {
2026 if (elem->doc == alias->docOfTargetNs) {
2027 elem->ns = alias->targetNs;
2028 } else {
2029 ns = xmlSearchNs(elem->doc, elem,
2030 alias->targetNs->prefix);
2031 if ((ns == NULL) ||
2032 (! xmlStrEqual(ns->href, alias->targetNs->href)) )
2033 {
2034 ns = xsltTreeAcquireStoredNs(elem->doc,
2035 alias->targetNs->href,
2036 alias->targetNs->prefix);
2037
2038 if (ns == NULL) {
2039 xsltTransformError(NULL, cctxt->style, elem,
2040 "Internal error in "
2041 "xsltLREBuildEffectiveNs(): "
2042 "failed to acquire a stored "
2043 "ns-declaration.\n");
2044 cctxt->style->errors++;
2045 return(-1);
2046
2047 }
2048 }
2049 elem->ns = ns;
2050 }
2051 } else {
2052 /*
2053 * Move into or leave in the NULL namespace.
2054 */
2055 elem->ns = NULL;
2056 }
2057 break;
2058 }
2059 alias = alias->next;
2060 }
2061
2062 attr = attr->next;
2063 }
2064 }
2065 return(0);
2066 }
2067
2068 /**
2069 * xsltLREBuildEffectiveNsNodes:
2070 *
2071 * Computes the effective namespaces nodes for a literal result
2072 * element.
2073 * @effectiveNs is the set of effective ns-nodes
2074 * on the literal result element, which will be added to the result
2075 * element if not already existing in the result tree.
2076 * This means that excluded namespaces (via exclude-result-prefixes,
2077 * extension-element-prefixes and the XSLT namespace) not added
2078 * to the set.
2079 * Namespace-aliasing was applied on the @effectiveNs.
2080 */
2081 static int
2082 xsltLREBuildEffectiveNsNodes(xsltCompilerCtxtPtr cctxt,
2083 xsltStyleItemLRElementInfoPtr item,
2084 xmlNodePtr elem,
2085 int isLRE)
2086 {
2087 xmlNsPtr ns, tmpns;
2088 xsltEffectiveNsPtr effNs, lastEffNs = NULL;
2089 int i, j, holdByElem;
2090 xsltPointerListPtr extElemNs = cctxt->inode->extElemNs;
2091 xsltPointerListPtr exclResultNs = cctxt->inode->exclResultNs;
2092
2093 if ((cctxt == NULL) || (cctxt->inode == NULL) || (elem == NULL) ||
2094 (item == NULL) || (item->effectiveNs != NULL))
2095 return(-1);
2096
2097 if (item->inScopeNs == NULL)
2098 return(0);
2099
2100 extElemNs = cctxt->inode->extElemNs;
2101 exclResultNs = cctxt->inode->exclResultNs;
2102
2103 for (i = 0; i < item->inScopeNs->totalNumber; i++) {
2104 ns = item->inScopeNs->list[i];
2105 /*
2106 * Skip namespaces designated as excluded namespaces
2107 * -------------------------------------------------
2108 *
2109 * XSLT-20 TODO: In XSLT 2.0 we need to keep namespaces
2110 * which are target namespaces of namespace-aliases
2111 * regardless if designated as excluded.
2112 *
2113 * Exclude the XSLT namespace.
2114 */
2115 if (xmlStrEqual(ns->href, XSLT_NAMESPACE))
2116 goto skip_ns;
2117
2118 /*
2119 * Apply namespace aliasing
2120 * ------------------------
2121 *
2122 * SPEC XSLT 2.0
2123 * "- A namespace node whose string value is a literal namespace
2124 * URI is not copied to the result tree.
2125 * - A namespace node whose string value is a target namespace URI
2126 * is copied to the result tree, whether or not the URI
2127 * identifies an excluded namespace."
2128 *
2129 * NOTE: The ns-aliasing machanism is non-cascading.
2130 * (checked with Saxon, Xalan and MSXML .NET).
2131 * URGENT TODO: is style->nsAliases the effective list of
2132 * ns-aliases, or do we need to lookup the whole
2133 * import-tree?
2134 * TODO: Get rid of import-tree lookup.
2135 */
2136 if (cctxt->hasNsAliases) {
2137 xsltNsAliasPtr alias;
2138 /*
2139 * First check for being a target namespace.
2140 */
2141 alias = cctxt->nsAliases;
2142 do {
2143 /*
2144 * TODO: Is xmlns="" handled already?
2145 */
2146 if ((alias->targetNs != NULL) &&
2147 (xmlStrEqual(alias->targetNs->href, ns->href)))
2148 {
2149 /*
2150 * Recognized as a target namespace; use it regardless
2151 * if excluded otherwise.
2152 */
2153 goto add_effective_ns;
2154 }
2155 alias = alias->next;
2156 } while (alias != NULL);
2157
2158 alias = cctxt->nsAliases;
2159 do {
2160 /*
2161 * TODO: Is xmlns="" handled already?
2162 */
2163 if ((alias->literalNs != NULL) &&
2164 (xmlStrEqual(alias->literalNs->href, ns->href)))
2165 {
2166 /*
2167 * Recognized as an namespace alias; do not use it.
2168 */
2169 goto skip_ns;
2170 }
2171 alias = alias->next;
2172 } while (alias != NULL);
2173 }
2174
2175 /*
2176 * Exclude excluded result namespaces.
2177 */
2178 if (exclResultNs) {
2179 for (j = 0; j < exclResultNs->number; j++)
2180 if (xmlStrEqual(ns->href, BAD_CAST exclResultNs->items[j]))
2181 goto skip_ns;
2182 }
2183 /*
2184 * Exclude extension-element namespaces.
2185 */
2186 if (extElemNs) {
2187 for (j = 0; j < extElemNs->number; j++)
2188 if (xmlStrEqual(ns->href, BAD_CAST extElemNs->items[j]))
2189 goto skip_ns;
2190 }
2191
2192 add_effective_ns:
2193 /*
2194 * OPTIMIZE TODO: This information may not be needed.
2195 */
2196 if (isLRE && (elem->nsDef != NULL)) {
2197 holdByElem = 0;
2198 tmpns = elem->nsDef;
2199 do {
2200 if (tmpns == ns) {
2201 holdByElem = 1;
2202 break;
2203 }
2204 tmpns = tmpns->next;
2205 } while (tmpns != NULL);
2206 } else
2207 holdByElem = 0;
2208
2209
2210 /*
2211 * Add the effective namespace declaration.
2212 */
2213 effNs = (xsltEffectiveNsPtr) xmlMalloc(sizeof(xsltEffectiveNs));
2214 if (effNs == NULL) {
2215 xsltTransformError(NULL, cctxt->style, elem,
2216 "Internal error in xsltLREBuildEffectiveNs(): "
2217 "failed to allocate memory.\n");
2218 cctxt->style->errors++;
2219 return(-1);
2220 }
2221 if (cctxt->psData->effectiveNs == NULL) {
2222 cctxt->psData->effectiveNs = effNs;
2223 effNs->nextInStore = NULL;
2224 } else {
2225 effNs->nextInStore = cctxt->psData->effectiveNs;
2226 cctxt->psData->effectiveNs = effNs;
2227 }
2228
2229 effNs->next = NULL;
2230 effNs->prefix = ns->prefix;
2231 effNs->nsName = ns->href;
2232 effNs->holdByElem = holdByElem;
2233
2234 if (lastEffNs == NULL)
2235 item->effectiveNs = effNs;
2236 else
2237 lastEffNs->next = effNs;
2238 lastEffNs = effNs;
2239
2240 skip_ns:
2241 {}
2242 }
2243 return(0);
2244 }
2245
2246
2247 /**
2248 * xsltLREInfoCreate:
2249 *
2250 * @isLRE: indicates if the given @elem is a literal result element
2251 *
2252 * Creates a new info for a literal result element.
2253 */
2254 static int
2255 xsltLREInfoCreate(xsltCompilerCtxtPtr cctxt,
2256 xmlNodePtr elem,
2257 int isLRE)
2258 {
2259 xsltStyleItemLRElementInfoPtr item;
2260
2261 if ((cctxt == NULL) || (cctxt->inode == NULL))
2262 return(-1);
2263
2264 item = (xsltStyleItemLRElementInfoPtr)
2265 xmlMalloc(sizeof(xsltStyleItemLRElementInfo));
2266 if (item == NULL) {
2267 xsltTransformError(NULL, cctxt->style, NULL,
2268 "Internal error in xsltLREInfoCreate(): "
2269 "memory allocation failed.\n");
2270 cctxt->style->errors++;
2271 return(-1);
2272 }
2273 memset(item, 0, sizeof(xsltStyleItemLRElementInfo));
2274 item->type = XSLT_FUNC_LITERAL_RESULT_ELEMENT;
2275 /*
2276 * Store it in the stylesheet.
2277 */
2278 item->next = cctxt->style->preComps;
2279 cctxt->style->preComps = (xsltElemPreCompPtr) item;
2280 /*
2281 * @inScopeNs are used for execution of XPath expressions
2282 * in AVTs.
2283 */
2284 item->inScopeNs = cctxt->inode->inScopeNs;
2285
2286 if (elem)
2287 xsltLREBuildEffectiveNsNodes(cctxt, item, elem, isLRE);
2288
2289 cctxt->inode->litResElemInfo = item;
2290 cctxt->inode->nsChanged = 0;
2291 cctxt->maxLREs++;
2292 return(0);
2293 }
2294
2295 /**
2296 * xsltCompilerVarInfoPush:
2297 * @cctxt: the compilation context
2298 *
2299 * Pushes a new var/param info onto the stack.
2300 *
2301 * Returns the acquired variable info.
2302 */
2303 static xsltVarInfoPtr
2304 xsltCompilerVarInfoPush(xsltCompilerCtxtPtr cctxt,
2305 xmlNodePtr inst,
2306 const xmlChar *name,
2307 const xmlChar *nsName)
2308 {
2309 xsltVarInfoPtr ivar;
2310
2311 if ((cctxt->ivar != NULL) && (cctxt->ivar->next != NULL)) {
2312 ivar = cctxt->ivar->next;
2313 } else if ((cctxt->ivar == NULL) && (cctxt->ivars != NULL)) {
2314 ivar = cctxt->ivars;
2315 } else {
2316 ivar = (xsltVarInfoPtr) xmlMalloc(sizeof(xsltVarInfo));
2317 if (ivar == NULL) {
2318 xsltTransformError(NULL, cctxt->style, inst,
2319 "xsltParseInScopeVarPush: xmlMalloc() failed!\n");
2320 cctxt->style->errors++;
2321 return(NULL);
2322 }
2323 /* memset(retVar, 0, sizeof(xsltInScopeVar)); */
2324 if (cctxt->ivars == NULL) {
2325 cctxt->ivars = ivar;
2326 ivar->prev = NULL;
2327 } else {
2328 cctxt->ivar->next = ivar;
2329 ivar->prev = cctxt->ivar;
2330 }
2331 cctxt->ivar = ivar;
2332 ivar->next = NULL;
2333 }
2334 ivar->depth = cctxt->depth;
2335 ivar->name = name;
2336 ivar->nsName = nsName;
2337 return(ivar);
2338 }
2339
2340 /**
2341 * xsltCompilerVarInfoPop:
2342 * @cctxt: the compilation context
2343 *
2344 * Pops all var/param infos from the stack, which
2345 * have the current depth.
2346 */
2347 static void
2348 xsltCompilerVarInfoPop(xsltCompilerCtxtPtr cctxt)
2349 {
2350
2351 while ((cctxt->ivar != NULL) &&
2352 (cctxt->ivar->depth > cctxt->depth))
2353 {
2354 cctxt->ivar = cctxt->ivar->prev;
2355 }
2356 }
2357
2358 /*
2359 * xsltCompilerNodePush:
2360 *
2361 * @cctxt: the compilation context
2362 * @node: the node to be pushed (this can also be the doc-node)
2363 *
2364 *
2365 *
2366 * Returns the current node info structure or
2367 * NULL in case of an internal error.
2368 */
2369 static xsltCompilerNodeInfoPtr
2370 xsltCompilerNodePush(xsltCompilerCtxtPtr cctxt, xmlNodePtr node)
2371 {
2372 xsltCompilerNodeInfoPtr inode, iprev;
2373
2374 if ((cctxt->inode != NULL) && (cctxt->inode->next != NULL)) {
2375 inode = cctxt->inode->next;
2376 } else if ((cctxt->inode == NULL) && (cctxt->inodeList != NULL)) {
2377 inode = cctxt->inodeList;
2378 } else {
2379 /*
2380 * Create a new node-info.
2381 */
2382 inode = (xsltCompilerNodeInfoPtr)
2383 xmlMalloc(sizeof(xsltCompilerNodeInfo));
2384 if (inode == NULL) {
2385 xsltTransformError(NULL, cctxt->style, NULL,
2386 "xsltCompilerNodePush: malloc failed.\n");
2387 return(NULL);
2388 }
2389 memset(inode, 0, sizeof(xsltCompilerNodeInfo));
2390 if (cctxt->inodeList == NULL)
2391 cctxt->inodeList = inode;
2392 else {
2393 cctxt->inodeLast->next = inode;
2394 inode->prev = cctxt->inodeLast;
2395 }
2396 cctxt->inodeLast = inode;
2397 cctxt->maxNodeInfos++;
2398 if (cctxt->inode == NULL) {
2399 cctxt->inode = inode;
2400 /*
2401 * Create an initial literal result element info for
2402 * the root of the stylesheet.
2403 */
2404 xsltLREInfoCreate(cctxt, NULL, 0);
2405 }
2406 }
2407 cctxt->depth++;
2408 cctxt->inode = inode;
2409 /*
2410 * REVISIT TODO: Keep the reset always complete.
2411 * NOTE: Be carefull with the @node, since it might be
2412 * a doc-node.
2413 */
2414 inode->node = node;
2415 inode->depth = cctxt->depth;
2416 inode->templ = NULL;
2417 inode->category = XSLT_ELEMENT_CATEGORY_XSLT;
2418 inode->type = 0;
2419 inode->item = NULL;
2420 inode->curChildType = 0;
2421 inode->extContentHandled = 0;
2422 inode->isRoot = 0;
2423
2424 if (inode->prev != NULL) {
2425 iprev = inode->prev;
2426 /*
2427 * Inherit the following information:
2428 * ---------------------------------
2429 *
2430 * In-scope namespaces
2431 */
2432 inode->inScopeNs = iprev->inScopeNs;
2433 /*
2434 * Info for literal result elements
2435 */
2436 inode->litResElemInfo = iprev->litResElemInfo;
2437 inode->nsChanged = iprev->nsChanged;
2438 /*
2439 * Excluded result namespaces
2440 */
2441 inode->exclResultNs = iprev->exclResultNs;
2442 /*
2443 * Extension instruction namespaces
2444 */
2445 inode->extElemNs = iprev->extElemNs;
2446 /*
2447 * Whitespace preservation
2448 */
2449 inode->preserveWhitespace = iprev->preserveWhitespace;
2450 /*
2451 * Forwards-compatible mode
2452 */
2453 inode->forwardsCompat = iprev->forwardsCompat;
2454 } else {
2455 inode->inScopeNs = NULL;
2456 inode->exclResultNs = NULL;
2457 inode->extElemNs = NULL;
2458 inode->preserveWhitespace = 0;
2459 inode->forwardsCompat = 0;
2460 }
2461
2462 return(inode);
2463 }
2464
2465 /*
2466 * xsltCompilerNodePop:
2467 *
2468 * @cctxt: the compilation context
2469 * @node: the node to be pushed (this can also be the doc-node)
2470 *
2471 * Pops the current node info.
2472 */
2473 static void
2474 xsltCompilerNodePop(xsltCompilerCtxtPtr cctxt, xmlNodePtr node)
2475 {
2476 if (cctxt->inode == NULL) {
2477 xmlGenericError(xmlGenericErrorContext,
2478 "xsltCompilerNodePop: Top-node mismatch.\n");
2479 return;
2480 }
2481 /*
2482 * NOTE: Be carefull with the @node, since it might be
2483 * a doc-node.
2484 */
2485 if (cctxt->inode->node != node) {
2486 xmlGenericError(xmlGenericErrorContext,
2487 "xsltCompilerNodePop: Node mismatch.\n");
2488 goto mismatch;
2489 }
2490 if (cctxt->inode->depth != cctxt->depth) {
2491 xmlGenericError(xmlGenericErrorContext,
2492 "xsltCompilerNodePop: Depth mismatch.\n");
2493 goto mismatch;
2494 }
2495 cctxt->depth--;
2496 /*
2497 * Pop information of variables.
2498 */
2499 if ((cctxt->ivar) && (cctxt->ivar->depth > cctxt->depth))
2500 xsltCompilerVarInfoPop(cctxt);
2501
2502 cctxt->inode = cctxt->inode->prev;
2503 if (cctxt->inode != NULL)
2504 cctxt->inode->curChildType = 0;
2505 return;
2506
2507 mismatch:
2508 {
2509 const xmlChar *nsName = NULL, *name = NULL;
2510 const xmlChar *infnsName = NULL, *infname = NULL;
2511
2512 if (node) {
2513 if (node->type == XML_ELEMENT_NODE) {
2514 name = node->name;
2515 if (node->ns != NULL)
2516 nsName = node->ns->href;
2517 else
2518 nsName = BAD_CAST "";
2519 } else {
2520 name = BAD_CAST "#document";
2521 nsName = BAD_CAST "";
2522 }
2523 } else
2524 name = BAD_CAST "Not given";
2525
2526 if (cctxt->inode->node) {
2527 if (node->type == XML_ELEMENT_NODE) {
2528 infname = cctxt->inode->node->name;
2529 if (cctxt->inode->node->ns != NULL)
2530 infnsName = cctxt->inode->node->ns->href;
2531 else
2532 infnsName = BAD_CAST "";
2533 } else {
2534 infname = BAD_CAST "#document";
2535 infnsName = BAD_CAST "";
2536 }
2537 } else
2538 infname = BAD_CAST "Not given";
2539
2540
2541 xmlGenericError(xmlGenericErrorContext,
2542 "xsltCompilerNodePop: Given : '%s' URI '%s'\n",
2543 name, nsName);
2544 xmlGenericError(xmlGenericErrorContext,
2545 "xsltCompilerNodePop: Expected: '%s' URI '%s'\n",
2546 infname, infnsName);
2547 }
2548 }
2549
2550 /*
2551 * xsltCompilerBuildInScopeNsList:
2552 *
2553 * Create and store the list of in-scope namespaces for the given
2554 * node in the stylesheet. If there are no changes in the in-scope
2555 * namespaces then the last ns-info of the ancestor axis will be returned.
2556 * Compilation-time only.
2557 *
2558 * Returns the ns-info or NULL if there are no namespaces in scope.
2559 */
2560 static xsltNsListContainerPtr
2561 xsltCompilerBuildInScopeNsList(xsltCompilerCtxtPtr cctxt, xmlNodePtr node)
2562 {
2563 xsltNsListContainerPtr nsi = NULL;
2564 xmlNsPtr *list = NULL, ns;
2565 int i, maxns = 5;
2566 /*
2567 * Create a new ns-list for this position in the node-tree.
2568 * xmlGetNsList() will return NULL, if there are no ns-decls in the
2569 * tree. Note that the ns-decl for the XML namespace is not added
2570 * to the resulting list; the XPath module handles the XML namespace
2571 * internally.
2572 */
2573 while (node != NULL) {
2574 if (node->type == XML_ELEMENT_NODE) {
2575 ns = node->nsDef;
2576 while (ns != NULL) {
2577 if (nsi == NULL) {
2578 nsi = (xsltNsListContainerPtr)
2579 xmlMalloc(sizeof(xsltNsListContainer));
2580 if (nsi == NULL) {
2581 xsltTransformError(NULL, cctxt->style, NULL,
2582 "xsltCompilerBuildInScopeNsList: "
2583 "malloc failed!\n");
2584 goto internal_err;
2585 }
2586 memset(nsi, 0, sizeof(xsltNsListContainer));
2587 nsi->list =
2588 (xmlNsPtr *) xmlMalloc(maxns * sizeof(xmlNsPtr));
2589 if (nsi->list == NULL) {
2590 xsltTransformError(NULL, cctxt->style, NULL,
2591 "xsltCompilerBuildInScopeNsList: "
2592 "malloc failed!\n");
2593 goto internal_err;
2594 }
2595 nsi->list[0] = NULL;
2596 }
2597 /*
2598 * Skip shadowed namespace bindings.
2599 */
2600 for (i = 0; i < nsi->totalNumber; i++) {
2601 if ((ns->prefix == nsi->list[i]->prefix) ||
2602 (xmlStrEqual(ns->prefix, nsi->list[i]->prefix)))
2603 break;
2604 }
2605 if (i >= nsi->totalNumber) {
2606 if (nsi->totalNumber +1 >= maxns) {
2607 maxns *= 2;
2608 nsi->list =
2609 (xmlNsPtr *) xmlRealloc(nsi->list,
2610 maxns * sizeof(xmlNsPtr));
2611 if (nsi->list == NULL) {
2612 xsltTransformError(NULL, cctxt->style, NULL,
2613 "xsltCompilerBuildInScopeNsList: "
2614 "realloc failed!\n");
2615 goto internal_err;
2616 }
2617 }
2618 nsi->list[nsi->totalNumber++] = ns;
2619 nsi->list[nsi->totalNumber] = NULL;
2620 }
2621
2622 ns = ns->next;
2623 }
2624 }
2625 node = node->parent;
2626 }
2627 if (nsi == NULL)
2628 return(NULL);
2629 /*
2630 * Move the default namespace to last position.
2631 */
2632 nsi->xpathNumber = nsi->totalNumber;
2633 for (i = 0; i < nsi->totalNumber; i++) {
2634 if (nsi->list[i]->prefix == NULL) {
2635 ns = nsi->list[i];
2636 nsi->list[i] = nsi->list[nsi->totalNumber-1];
2637 nsi->list[nsi->totalNumber-1] = ns;
2638 nsi->xpathNumber--;
2639 break;
2640 }
2641 }
2642 /*
2643 * Store the ns-list in the stylesheet.
2644 */
2645 if (xsltPointerListAddSize(
2646 (xsltPointerListPtr)cctxt->psData->inScopeNamespaces,
2647 (void *) nsi, 5) == -1)
2648 {
2649 xmlFree(nsi);
2650 nsi = NULL;
2651 xsltTransformError(NULL, cctxt->style, NULL,
2652 "xsltCompilerBuildInScopeNsList: failed to add ns-info.\n");
2653 goto internal_err;
2654 }
2655 /*
2656 * Notify of change in status wrt namespaces.
2657 */
2658 if (cctxt->inode != NULL)
2659 cctxt->inode->nsChanged = 1;
2660
2661 return(nsi);
2662
2663 internal_err:
2664 if (list != NULL)
2665 xmlFree(list);
2666 cctxt->style->errors++;
2667 return(NULL);
2668 }
2669
2670 static int
2671 xsltParseNsPrefixList(xsltCompilerCtxtPtr cctxt,
2672 xsltPointerListPtr list,
2673 xmlNodePtr node,
2674 const xmlChar *value)
2675 {
2676 xmlChar *cur, *end;
2677 xmlNsPtr ns;
2678
2679 if ((cctxt == NULL) || (value == NULL) || (list == NULL))
2680 return(-1);
2681
2682 list->number = 0;
2683
2684 cur = (xmlChar *) value;
2685 while (*cur != 0) {
2686 while (IS_BLANK(*cur)) cur++;
2687 if (*cur == 0)
2688 break;
2689 end = cur;
2690 while ((*end != 0) && (!IS_BLANK(*end))) end++;
2691 cur = xmlStrndup(cur, end - cur);
2692 if (cur == NULL) {
2693 cur = end;
2694 continue;
2695 }
2696 /*
2697 * TODO: Export and use xmlSearchNsByPrefixStrict()
2698 * in Libxml2, tree.c, since xmlSearchNs() is in most
2699 * cases not efficient and in some cases not correct.
2700 *
2701 * XSLT-2 TODO: XSLT 2.0 allows an additional "#all" value.
2702 */
2703 if ((cur[0] == '#') &&
2704 xmlStrEqual(cur, (const xmlChar *)"#default"))
2705 ns = xmlSearchNs(cctxt->style->doc, node, NULL);
2706 else
2707 ns = xmlSearchNs(cctxt->style->doc, node, cur);
2708
2709 if (ns == NULL) {
2710 /*
2711 * TODO: Better to report the attr-node, otherwise
2712 * the user won't know which attribute was invalid.
2713 */
2714 xsltTransformError(NULL, cctxt->style, node,
2715 "No namespace binding in scope for prefix '%s'.\n", cur);
2716 /*
2717 * XSLT-1.0: "It is an error if there is no namespace
2718 * bound to the prefix on the element bearing the
2719 * exclude-result-prefixes or xsl:exclude-result-prefixes
2720 * attribute."
2721 */
2722 cctxt->style->errors++;
2723 } else {
2724 #ifdef WITH_XSLT_DEBUG_PARSING
2725 xsltGenericDebug(xsltGenericDebugContext,
2726 "resolved prefix '%s'\n", cur);
2727 #endif
2728 /*
2729 * Note that we put the namespace name into the dict.
2730 */
2731 if (xsltPointerListAddSize(list,
2732 (void *) xmlDictLookup(cctxt->style->dict,
2733 ns->href, -1), 5) == -1)
2734 {
2735 xmlFree(cur);
2736 goto internal_err;
2737 }
2738 }
2739 xmlFree(cur);
2740
2741 cur = end;
2742 }
2743 return(0);
2744
2745 internal_err:
2746 cctxt->style->errors++;
2747 return(-1);
2748 }
2749
2750 /**
2751 * xsltCompilerUtilsCreateMergedList:
2752 * @dest: the destination list (optional)
2753 * @first: the first list
2754 * @second: the second list (optional)
2755 *
2756 * Appends the content of @second to @first into @destination.
2757 * If @destination is NULL a new list will be created.
2758 *
2759 * Returns the merged list of items or NULL if there's nothing to merge.
2760 */
2761 static xsltPointerListPtr
2762 xsltCompilerUtilsCreateMergedList(xsltPointerListPtr first,
2763 xsltPointerListPtr second)
2764 {
2765 xsltPointerListPtr ret;
2766 size_t num;
2767
2768 if (first)
2769 num = first->number;
2770 else
2771 num = 0;
2772 if (second)
2773 num += second->number;
2774 if (num == 0)
2775 return(NULL);
2776 ret = xsltPointerListCreate(num);
2777 if (ret == NULL)
2778 return(NULL);
2779 /*
2780 * Copy contents.
2781 */
2782 if ((first != NULL) && (first->number != 0)) {
2783 memcpy(ret->items, first->items,
2784 first->number * sizeof(void *));
2785 if ((second != NULL) && (second->number != 0))
2786 memcpy(ret->items + first->number, second->items,
2787 second->number * sizeof(void *));
2788 } else if ((second != NULL) && (second->number != 0))
2789 memcpy(ret->items, (void *) second->items,
2790 second->number * sizeof(void *));
2791 ret->number = num;
2792 return(ret);
2793 }
2794
2795 /*
2796 * xsltParseExclResultPrefixes:
2797 *
2798 * Create and store the list of in-scope namespaces for the given
2799 * node in the stylesheet. If there are no changes in the in-scope
2800 * namespaces then the last ns-info of the ancestor axis will be returned.
2801 * Compilation-time only.
2802 *
2803 * Returns the ns-info or NULL if there are no namespaces in scope.
2804 */
2805 static xsltPointerListPtr
2806 xsltParseExclResultPrefixes(xsltCompilerCtxtPtr cctxt, xmlNodePtr node,
2807 xsltPointerListPtr def,
2808 int instrCategory)
2809 {
2810 xsltPointerListPtr list = NULL;
2811 xmlChar *value;
2812 xmlAttrPtr attr;
2813
2814 if ((cctxt == NULL) || (node == NULL))
2815 return(NULL);
2816
2817 if (instrCategory == XSLT_ELEMENT_CATEGORY_XSLT)
2818 attr = xmlHasNsProp(node, BAD_CAST "exclude-result-prefixes", NULL);
2819 else
2820 attr = xmlHasNsProp(node, BAD_CAST "exclude-result-prefixes",
2821 XSLT_NAMESPACE);
2822 if (attr == NULL)
2823 return(def);
2824
2825 if (attr && (instrCategory == XSLT_ELEMENT_CATEGORY_LRE)) {
2826 /*
2827 * Mark the XSLT attr.
2828 */
2829 attr->psvi = (void *) xsltXSLTAttrMarker;
2830 }
2831
2832 if ((attr->children != NULL) &&
2833 (attr->children->content != NULL))
2834 value = attr->children->content;
2835 else {
2836 xsltTransformError(NULL, cctxt->style, node,
2837 "Attribute 'exclude-result-prefixes': Invalid value.\n");
2838 cctxt->style->errors++;
2839 return(def);
2840 }
2841
2842 if (xsltParseNsPrefixList(cctxt, cctxt->tmpList, node,
2843 BAD_CAST value) != 0)
2844 goto exit;
2845 if (cctxt->tmpList->number == 0)
2846 goto exit;
2847 /*
2848 * Merge the list with the inherited list.
2849 */
2850 list = xsltCompilerUtilsCreateMergedList(def, cctxt->tmpList);
2851 if (list == NULL)
2852 goto exit;
2853 /*
2854 * Store the list in the stylesheet/compiler context.
2855 */
2856 if (xsltPointerListAddSize(
2857 cctxt->psData->exclResultNamespaces, list, 5) == -1)
2858 {
2859 xsltPointerListFree(list);
2860 list = NULL;
2861 goto exit;
2862 }
2863 /*
2864 * Notify of change in status wrt namespaces.
2865 */
2866 if (cctxt->inode != NULL)
2867 cctxt->inode->nsChanged = 1;
2868
2869 exit:
2870 if (list != NULL)
2871 return(list);
2872 else
2873 return(def);
2874 }
2875
2876 /*
2877 * xsltParseExtElemPrefixes:
2878 *
2879 * Create and store the list of in-scope namespaces for the given
2880 * node in the stylesheet. If there are no changes in the in-scope
2881 * namespaces then the last ns-info of the ancestor axis will be returned.
2882 * Compilation-time only.
2883 *
2884 * Returns the ns-info or NULL if there are no namespaces in scope.
2885 */
2886 static xsltPointerListPtr
2887 xsltParseExtElemPrefixes(xsltCompilerCtxtPtr cctxt, xmlNodePtr node,
2888 xsltPointerListPtr def,
2889 int instrCategory)
2890 {
2891 xsltPointerListPtr list = NULL;
2892 xmlAttrPtr attr;
2893 xmlChar *value;
2894 int i;
2895
2896 if ((cctxt == NULL) || (node == NULL))
2897 return(NULL);
2898
2899 if (instrCategory == XSLT_ELEMENT_CATEGORY_XSLT)
2900 attr = xmlHasNsProp(node, BAD_CAST "extension-element-prefixes", NULL);
2901 else
2902 attr = xmlHasNsProp(node, BAD_CAST "extension-element-prefixes",
2903 XSLT_NAMESPACE);
2904 if (attr == NULL)
2905 return(def);
2906
2907 if (attr && (instrCategory == XSLT_ELEMENT_CATEGORY_LRE)) {
2908 /*
2909 * Mark the XSLT attr.
2910 */
2911 attr->psvi = (void *) xsltXSLTAttrMarker;
2912 }
2913
2914 if ((attr->children != NULL) &&
2915 (attr->children->content != NULL))
2916 value = attr->children->content;
2917 else {
2918 xsltTransformError(NULL, cctxt->style, node,
2919 "Attribute 'extension-element-prefixes': Invalid value.\n");
2920 cctxt->style->errors++;
2921 return(def);
2922 }
2923
2924
2925 if (xsltParseNsPrefixList(cctxt, cctxt->tmpList, node,
2926 BAD_CAST value) != 0)
2927 goto exit;
2928
2929 if (cctxt->tmpList->number == 0)
2930 goto exit;
2931 /*
2932 * REVISIT: Register the extension namespaces.
2933 */
2934 for (i = 0; i < cctxt->tmpList->number; i++)
2935 xsltRegisterExtPrefix(cctxt->style, NULL,
2936 BAD_CAST cctxt->tmpList->items[i]);
2937 /*
2938 * Merge the list with the inherited list.
2939 */
2940 list = xsltCompilerUtilsCreateMergedList(def, cctxt->tmpList);
2941 if (list == NULL)
2942 goto exit;
2943 /*
2944 * Store the list in the stylesheet.
2945 */
2946 if (xsltPointerListAddSize(
2947 cctxt->psData->extElemNamespaces, list, 5) == -1)
2948 {
2949 xsltPointerListFree(list);
2950 list = NULL;
2951 goto exit;
2952 }
2953 /*
2954 * Notify of change in status wrt namespaces.
2955 */
2956 if (cctxt->inode != NULL)
2957 cctxt->inode->nsChanged = 1;
2958
2959 exit:
2960 if (list != NULL)
2961 return(list);
2962 else
2963 return(def);
2964 }
2965
2966 /*
2967 * xsltParseAttrXSLTVersion:
2968 *
2969 * @cctxt: the compilation context
2970 * @node: the element-node
2971 * @isXsltElem: whether this is an XSLT element
2972 *
2973 * Parses the attribute xsl:version.
2974 *
2975 * Returns 1 if there was such an attribute, 0 if not and
2976 * -1 if an internal or API error occured.
2977 */
2978 static int
2979 xsltParseAttrXSLTVersion(xsltCompilerCtxtPtr cctxt, xmlNodePtr node,
2980 int instrCategory)
2981 {
2982 xmlChar *value;
2983 xmlAttrPtr attr;
2984
2985 if ((cctxt == NULL) || (node == NULL))
2986 return(-1);
2987
2988 if (instrCategory == XSLT_ELEMENT_CATEGORY_XSLT)
2989 attr = xmlHasNsProp(node, BAD_CAST "version", NULL);
2990 else
2991 attr = xmlHasNsProp(node, BAD_CAST "version", XSLT_NAMESPACE);
2992
2993 if (attr == NULL)
2994 return(0);
2995
2996 attr->psvi = (void *) xsltXSLTAttrMarker;
2997
2998 if ((attr->children != NULL) &&
2999 (attr->children->content != NULL))
3000 value = attr->children->content;
3001 else {
3002 xsltTransformError(NULL, cctxt->style, node,
3003 "Attribute 'version': Invalid value.\n");
3004 cctxt->style->errors++;
3005 return(1);
3006 }
3007
3008 if (! xmlStrEqual(value, (const xmlChar *)"1.0")) {
3009 cctxt->inode->forwardsCompat = 1;
3010 /*
3011 * TODO: To what extent do we support the
3012 * forwards-compatible mode?
3013 */
3014 /*
3015 * Report this only once per compilation episode.
3016 */
3017 if (! cctxt->hasForwardsCompat) {
3018 cctxt->hasForwardsCompat = 1;
3019 cctxt->errSeverity = XSLT_ERROR_SEVERITY_WARNING;
3020 xsltTransformError(NULL, cctxt->style, node,
3021 "Warning: the attribute xsl:version specifies a value "
3022 "different from '1.0'. Switching to forwards-compatible "
3023 "mode. Only features of XSLT 1.0 are supported by this "
3024 "processor.\n");
3025 cctxt->style->warnings++;
3026 cctxt->errSeverity = XSLT_ERROR_SEVERITY_ERROR;
3027 }
3028 } else {
3029 cctxt->inode->forwardsCompat = 0;
3030 }
3031
3032 if (attr && (instrCategory == XSLT_ELEMENT_CATEGORY_LRE)) {
3033 /*
3034 * Set a marker on XSLT attributes.
3035 */
3036 attr->psvi = (void *) xsltXSLTAttrMarker;
3037 }
3038 return(1);
3039 }
3040
3041 static int
3042 xsltParsePreprocessStylesheetTree(xsltCompilerCtxtPtr cctxt, xmlNodePtr node)
3043 {
3044 xmlNodePtr deleteNode, cur, txt, textNode = NULL;
3045 xmlDocPtr doc;
3046 xsltStylesheetPtr style;
3047 int internalize = 0, findSpaceAttr;
3048 int xsltStylesheetElemDepth;
3049 xmlAttrPtr attr;
3050 xmlChar *value;
3051 const xmlChar *name, *nsNameXSLT = NULL;
3052 int strictWhitespace, inXSLText = 0;
3053 #ifdef XSLT_REFACTORED_XSLT_NSCOMP
3054 xsltNsMapPtr nsMapItem;
3055 #endif
3056
3057 if ((cctxt == NULL) || (cctxt->style == NULL) ||
3058 (node == NULL) || (node->type != XML_ELEMENT_NODE))
3059 return(-1);
3060
3061 doc = node->doc;
3062 if (doc == NULL)
3063 goto internal_err;
3064
3065 style = cctxt->style;
3066 if ((style->dict != NULL) && (doc->dict == style->dict))
3067 internalize = 1;
3068 else
3069 style->internalized = 0;
3070
3071 /*
3072 * Init value of xml:space. Since this might be an embedded
3073 * stylesheet, this is needed to be performed on the element
3074 * where the stylesheet is rooted at, taking xml:space of
3075 * ancestors into account.
3076 */
3077 if (! cctxt->simplified)
3078 xsltStylesheetElemDepth = cctxt->depth +1;
3079 else
3080 xsltStylesheetElemDepth = 0;
3081
3082 if (xmlNodeGetSpacePreserve(node) != 1)
3083 cctxt->inode->preserveWhitespace = 0;
3084 else
3085 cctxt->inode->preserveWhitespace = 1;
3086
3087 /*
3088 * Eval if we should keep the old incorrect behaviour.
3089 */
3090 strictWhitespace = (cctxt->strict != 0) ? 1 : 0;
3091
3092 nsNameXSLT = xsltConstNamespaceNameXSLT;
3093
3094 deleteNode = NULL;
3095 cur = node;
3096 while (cur != NULL) {
3097 if (deleteNode != NULL) {
3098
3099 #ifdef WITH_XSLT_DEBUG_BLANKS
3100 xsltGenericDebug(xsltGenericDebugContext,
3101 "xsltParsePreprocessStylesheetTree: removing node\n");
3102 #endif
3103 xmlUnlinkNode(deleteNode);
3104 xmlFreeNode(deleteNode);
3105 deleteNode = NULL;
3106 }
3107 if (cur->type == XML_ELEMENT_NODE) {
3108
3109 /*
3110 * Clear the PSVI field.
3111 */
3112 cur->psvi = NULL;
3113
3114 xsltCompilerNodePush(cctxt, cur);
3115
3116 inXSLText = 0;
3117 textNode = NULL;
3118 findSpaceAttr = 1;
3119 cctxt->inode->stripWhitespace = 0;
3120 /*
3121 * TODO: I'd love to use a string pointer comparison here :-/
3122 */
3123 if (IS_XSLT_ELEM(cur)) {
3124 #ifdef XSLT_REFACTORED_XSLT_NSCOMP
3125 if (cur->ns->href != nsNameXSLT) {
3126 nsMapItem = xsltNewNamespaceMapItem(cctxt,
3127 doc, cur->ns, cur);
3128 if (nsMapItem == NULL)
3129 goto internal_err;
3130 cur->ns->href = nsNameXSLT;
3131 }
3132 #endif
3133
3134 if (cur->name == NULL)
3135 goto process_attributes;
3136 /*
3137 * Mark the XSLT element for later recognition.
3138 * TODO: Using the marker is still too dangerous, since if
3139 * the parsing mechanism leaves out an XSLT element, then
3140 * this might hit the transformation-mechanism, which
3141 * will break if it doesn't expect such a marker.
3142 */
3143 /* cur->psvi = (void *) xsltXSLTElemMarker; */
3144
3145 /*
3146 * XSLT 2.0: "Any whitespace text node whose parent is
3147 * one of the following elements is removed from the "
3148 * tree, regardless of any xml:space attributes:..."
3149 * xsl:apply-imports,
3150 * xsl:apply-templates,
3151 * xsl:attribute-set,
3152 * xsl:call-template,
3153 * xsl:choose,
3154 * xsl:stylesheet, xsl:transform.
3155 * XSLT 2.0: xsl:analyze-string,
3156 * xsl:character-map,
3157 * xsl:next-match
3158 *
3159 * TODO: I'd love to use a string pointer comparison here :-/
3160 */
3161 name = cur->name;
3162 switch (*name) {
3163 case 't':
3164 if ((name[0] == 't') && (name[1] == 'e') &&
3165 (name[2] == 'x') && (name[3] == 't') &&
3166 (name[4] == 0))
3167 {
3168 /*
3169 * Process the xsl:text element.
3170 * ----------------------------
3171 * Mark it for later recognition.
3172 */
3173 cur->psvi = (void *) xsltXSLTTextMarker;
3174 /*
3175 * For stylesheets, the set of
3176 * whitespace-preserving element names
3177 * consists of just xsl:text.
3178 */
3179 findSpaceAttr = 0;
3180 cctxt->inode->preserveWhitespace = 1;
3181 inXSLText = 1;
3182 }
3183 break;
3184 case 'c':
3185 if (xmlStrEqual(name, BAD_CAST "choose") ||
3186 xmlStrEqual(name, BAD_CAST "call-template"))
3187 cctxt->inode->stripWhitespace = 1;
3188 break;
3189 case 'a':
3190 if (xmlStrEqual(name, BAD_CAST "apply-templates") ||
3191 xmlStrEqual(name, BAD_CAST "apply-imports") ||
3192 xmlStrEqual(name, BAD_CAST "attribute-set"))
3193
3194 cctxt->inode->stripWhitespace = 1;
3195 break;
3196 default:
3197 if (xsltStylesheetElemDepth == cctxt->depth) {
3198 /*
3199 * This is a xsl:stylesheet/xsl:transform.
3200 */
3201 cctxt->inode->stripWhitespace = 1;
3202 break;
3203 }
3204
3205 if ((cur->prev != NULL) &&
3206 (cur->prev->type == XML_TEXT_NODE))
3207 {
3208 /*
3209 * XSLT 2.0 : "Any whitespace text node whose
3210 * following-sibling node is an xsl:param or
3211 * xsl:sort element is removed from the tree,
3212 * regardless of any xml:space attributes."
3213 */
3214 if (((*name == 'p') || (*name == 's')) &&
3215 (xmlStrEqual(name, BAD_CAST "param") ||
3216 xmlStrEqual(name, BAD_CAST "sort")))
3217 {
3218 do {
3219 if (IS_BLANK_NODE(cur->prev)) {
3220 txt = cur->prev;
3221 xmlUnlinkNode(txt);
3222 xmlFreeNode(txt);
3223 } else {
3224 /*
3225 * This will result in a content
3226 * error, when hitting the parsing
3227 * functions.
3228 */
3229 break;
3230 }
3231 } while (cur->prev);
3232 }
3233 }
3234 break;
3235 }
3236 }
3237
3238 process_attributes:
3239 /*
3240 * Process attributes.
3241 * ------------------
3242 */
3243 if (cur->properties != NULL) {
3244 if (cur->children == NULL)
3245 findSpaceAttr = 0;
3246 attr = cur->properties;
3247 do {
3248 #ifdef XSLT_REFACTORED_XSLT_NSCOMP
3249 if ((attr->ns) && (attr->ns->href != nsNameXSLT) &&
3250 xmlStrEqual(attr->ns->href, nsNameXSLT))
3251 {
3252 nsMapItem = xsltNewNamespaceMapItem(cctxt,
3253 doc, attr->ns, cur);
3254 if (nsMapItem == NULL)
3255 goto internal_err;
3256 attr->ns->href = nsNameXSLT;
3257 }
3258 #endif
3259 if (internalize) {
3260 /*
3261 * Internalize the attribute's value; the goal is to
3262 * speed up operations and minimize used space by
3263 * compiled stylesheets.
3264 */
3265 txt = attr->children;
3266 /*
3267 * NOTE that this assumes only one
3268 * text-node in the attribute's content.
3269 */
3270 if ((txt != NULL) && (txt->content != NULL) &&
3271 (!xmlDictOwns(style->dict, txt->content)))
3272 {
3273 value = (xmlChar *) xmlDictLookup(style->dict,
3274 txt->content, -1);
3275 xmlNodeSetContent(txt, NULL);
3276 txt->content = value;
3277 }
3278 }
3279 /*
3280 * Process xml:space attributes.
3281 * ----------------------------
3282 */
3283 if ((findSpaceAttr != 0) &&
3284 (attr->ns != NULL) &&
3285 (attr->name != NULL) &&
3286 (attr->name[0] == 's') &&
3287 (attr->ns->prefix != NULL) &&
3288 (attr->ns->prefix[0] == 'x') &&
3289 (attr->ns->prefix[1] == 'm') &&
3290 (attr->ns->prefix[2] == 'l') &&
3291 (attr->ns->prefix[3] == 0))
3292 {
3293 value = xmlGetNsProp(cur, BAD_CAST "space",
3294 XML_XML_NAMESPACE);
3295 if (value != NULL) {
3296 if (xmlStrEqual(value, BAD_CAST "preserve")) {
3297 cctxt->inode->preserveWhitespace = 1;
3298 } else if (xmlStrEqual(value, BAD_CAST "default")) {
3299 cctxt->inode->preserveWhitespace = 0;
3300 } else {
3301 /* Invalid value for xml:space. */
3302 xsltTransformError(NULL, style, cur,
3303 "Attribute xml:space: Invalid value.\n");
3304 cctxt->style->warnings++;
3305 }
3306 findSpaceAttr = 0;
3307 xmlFree(value);
3308 }
3309
3310 }
3311 attr = attr->next;
3312 } while (attr != NULL);
3313 }
3314 /*
3315 * We'll descend into the children of element nodes only.
3316 */
3317 if (cur->children != NULL) {
3318 cur = cur->children;
3319 continue;
3320 }
3321 } else if ((cur->type == XML_TEXT_NODE) ||
3322 (cur->type == XML_CDATA_SECTION_NODE))
3323 {
3324 /*
3325 * Merge adjacent text/CDATA-section-nodes
3326 * ---------------------------------------
3327 * In order to avoid breaking of existing stylesheets,
3328 * if the old behaviour is wanted (strictWhitespace == 0),
3329 * then we *won't* merge adjacent text-nodes
3330 * (except in xsl:text); this will ensure that whitespace-only
3331 * text nodes are (incorrectly) not stripped in some cases.
3332 *
3333 * Example: : <foo> <!-- bar -->zoo</foo>
3334 * Corrent (strict) result: <foo> zoo</foo>
3335 * Incorrect (old) result : <foo>zoo</foo>
3336 *
3337 * NOTE that we *will* merge adjacent text-nodes if
3338 * they are in xsl:text.
3339 * Example, the following:
3340 * <xsl:text> <!-- bar -->zoo<xsl:text>
3341 * will result in both cases in:
3342 * <xsl:text> zoo<xsl:text>
3343 */
3344 cur->type = XML_TEXT_NODE;
3345 if ((strictWhitespace != 0) || (inXSLText != 0)) {
3346 /*
3347 * New behaviour; merge nodes.
3348 */
3349 if (textNode == NULL)
3350 textNode = cur;
3351 else {
3352 if (cur->content != NULL)
3353 xmlNodeAddContent(textNode, cur->content);
3354 deleteNode = cur;
3355 }
3356 if ((cur->next == NULL) ||
3357 (cur->next->type == XML_ELEMENT_NODE))
3358 goto end_of_text;
3359 else
3360 goto next_sibling;
3361 } else {
3362 /*
3363 * Old behaviour.
3364 */
3365 if (textNode == NULL)
3366 textNode = cur;
3367 goto end_of_text;
3368 }
3369 } else if ((cur->type == XML_COMMENT_NODE) ||
3370 (cur->type == XML_PI_NODE))
3371 {
3372 /*
3373 * Remove processing instructions and comments.
3374 */
3375 deleteNode = cur;
3376 if ((cur->next == NULL) ||
3377 (cur->next->type == XML_ELEMENT_NODE))
3378 goto end_of_text;
3379 else
3380 goto next_sibling;
3381 } else {
3382 textNode = NULL;
3383 /*
3384 * Invalid node-type for this data-model.
3385 */
3386 xsltTransformError(NULL, style, cur,
3387 "Invalid type of node for the XSLT data model.\n");
3388 cctxt->style->errors++;
3389 goto next_sibling;
3390 }
3391
3392 end_of_text:
3393 if (textNode) {
3394 value = textNode->content;
3395 /*
3396 * At this point all adjacent text/CDATA-section nodes
3397 * have been merged.
3398 *
3399 * Strip whitespace-only text-nodes.
3400 * (cctxt->inode->stripWhitespace)
3401 */
3402 if ((value == NULL) || (*value == 0) ||
3403 (((cctxt->inode->stripWhitespace) ||
3404 (! cctxt->inode->preserveWhitespace)) &&
3405 IS_BLANK(*value) &&
3406 xsltIsBlank(value)))
3407 {
3408 if (textNode != cur) {
3409 xmlUnlinkNode(textNode);
3410 xmlFreeNode(textNode);
3411 } else
3412 deleteNode = textNode;
3413 textNode = NULL;
3414 goto next_sibling;
3415 }
3416 /*
3417 * Convert CDATA-section nodes to text-nodes.
3418 * TODO: Can this produce problems?
3419 */
3420 if (textNode->type != XML_TEXT_NODE) {
3421 textNode->type = XML_TEXT_NODE;
3422 textNode->name = xmlStringText;
3423 }
3424 if (internalize &&
3425 (textNode->content != NULL) &&
3426 (!xmlDictOwns(style->dict, textNode->content)))
3427 {
3428 /*
3429 * Internalize the string.
3430 */
3431 value = (xmlChar *) xmlDictLookup(style->dict,
3432 textNode->content, -1);
3433 xmlNodeSetContent(textNode, NULL);
3434 textNode->content = value;
3435 }
3436 textNode = NULL;
3437 /*
3438 * Note that "disable-output-escaping" of the xsl:text
3439 * element will be applied at a later level, when
3440 * XSLT elements are processed.
3441 */
3442 }
3443
3444 next_sibling:
3445 if (cur->type == XML_ELEMENT_NODE) {
3446 xsltCompilerNodePop(cctxt, cur);
3447 }
3448 if (cur == node)
3449 break;
3450 if (cur->next != NULL) {
3451 cur = cur->next;
3452 } else {
3453 cur = cur->parent;
3454 inXSLText = 0;
3455 goto next_sibling;
3456 };
3457 }
3458 if (deleteNode != NULL) {
3459 #ifdef WITH_XSLT_DEBUG_PARSING
3460 xsltGenericDebug(xsltGenericDebugContext,
3461 "xsltParsePreprocessStylesheetTree: removing node\n");
3462 #endif
3463 xmlUnlinkNode(deleteNode);
3464 xmlFreeNode(deleteNode);
3465 }
3466 return(0);
3467
3468 internal_err:
3469 return(-1);
3470 }
3471
3472 #endif /* XSLT_REFACTORED */
3473
3474 #ifdef XSLT_REFACTORED
3475 #else
3476 static void
3477 xsltPreprocessStylesheet(xsltStylesheetPtr style, xmlNodePtr cur)
3478 {
3479 xmlNodePtr deleteNode, styleelem;
3480 int internalize = 0;
3481
3482 if ((style == NULL) || (cur == NULL))
3483 return;
3484
3485 if ((cur->doc != NULL) && (style->dict != NULL) &&
3486 (cur->doc->dict == style->dict))
3487 internalize = 1;
3488 else
3489 style->internalized = 0;
3490
3491 if ((cur != NULL) && (IS_XSLT_ELEM(cur)) &&
3492 (IS_XSLT_NAME(cur, "stylesheet"))) {
3493 styleelem = cur;
3494 } else {
3495 styleelem = NULL;
3496 }
3497
3498 /*
3499 * This content comes from the stylesheet
3500 * For stylesheets, the set of whitespace-preserving
3501 * element names consists of just xsl:text.
3502 */
3503 deleteNode = NULL;
3504 while (cur != NULL) {
3505 if (deleteNode != NULL) {
3506 #ifdef WITH_XSLT_DEBUG_BLANKS
3507 xsltGenericDebug(xsltGenericDebugContext,
3508 "xsltPreprocessStylesheet: removing ignorable blank node\n");
3509 #endif
3510 xmlUnlinkNode(deleteNode);
3511 xmlFreeNode(deleteNode);
3512 deleteNode = NULL;
3513 }
3514 if (cur->type == XML_ELEMENT_NODE) {
3515 int exclPrefixes;
3516 /*
3517 * Internalize attributes values.
3518 */
3519 if ((internalize) && (cur->properties != NULL)) {
3520 xmlAttrPtr attr = cur->properties;
3521 xmlNodePtr txt;
3522
3523 while (attr != NULL) {
3524 txt = attr->children;
3525 if ((txt != NULL) && (txt->type == XML_TEXT_NODE) &&
3526 (txt->content != NULL) &&
3527 (!xmlDictOwns(style->dict, txt->content)))
3528 {
3529 xmlChar *tmp;
3530
3531 /*
3532 * internalize the text string, goal is to speed
3533 * up operations and minimize used space by compiled
3534 * stylesheets.
3535 */
3536 tmp = (xmlChar *) xmlDictLookup(style->dict,
3537 txt->content, -1);
3538 if (tmp != txt->content) {
3539 xmlNodeSetContent(txt, NULL);
3540 txt->content = tmp;
3541 }
3542 }
3543 attr = attr->next;
3544 }
3545 }
3546 if (IS_XSLT_ELEM(cur)) {
3547 exclPrefixes = 0;
3548 if (IS_XSLT_NAME(cur, "text")) {
3549 for (;exclPrefixes > 0;exclPrefixes--)
3550 exclPrefixPop(style);
3551 goto skip_children;
3552 }
3553 } else {
3554 exclPrefixes = xsltParseStylesheetExcludePrefix(style, cur, 0);
3555 }
3556
3557 if ((cur->nsDef != NULL) && (style->exclPrefixNr > 0)) {
3558 xmlNsPtr ns = cur->nsDef, prev = NULL, next;
3559 xmlNodePtr root = NULL;
3560 int i, moved;
3561
3562 root = xmlDocGetRootElement(cur->doc);
3563 if ((root != NULL) && (root != cur)) {
3564 while (ns != NULL) {
3565 moved = 0;
3566 next = ns->next;
3567 for (i = 0;i < style->exclPrefixNr;i++) {
3568 if ((ns->prefix != NULL) &&
3569 (xmlStrEqual(ns->href,
3570 style->exclPrefixTab[i]))) {
3571 /*
3572 * Move the namespace definition on the root
3573 * element to avoid duplicating it without
3574 * loosing it.
3575 */
3576 if (prev == NULL) {
3577 cur->nsDef = ns->next;
3578 } else {
3579 prev->next = ns->next;
3580 }
3581 ns->next = root->nsDef;
3582 root->nsDef = ns;
3583 moved = 1;
3584 break;
3585 }
3586 }
3587 if (moved == 0)
3588 prev = ns;
3589 ns = next;
3590 }
3591 }
3592 }
3593 /*
3594 * If we have prefixes locally, recurse and pop them up when
3595 * going back
3596 */
3597 if (exclPrefixes > 0) {
3598 xsltPreprocessStylesheet(style, cur->children);
3599 for (;exclPrefixes > 0;exclPrefixes--)
3600 exclPrefixPop(style);
3601 goto skip_children;
3602 }
3603 } else if (cur->type == XML_TEXT_NODE) {
3604 if (IS_BLANK_NODE(cur)) {
3605 if (xmlNodeGetSpacePreserve(cur->parent) != 1) {
3606 deleteNode = cur;
3607 }
3608 } else if ((cur->content != NULL) && (internalize) &&
3609 (!xmlDictOwns(style->dict, cur->content))) {
3610 xmlChar *tmp;
3611
3612 /*
3613 * internalize the text string, goal is to speed
3614 * up operations and minimize used space by compiled
3615 * stylesheets.
3616 */
3617 tmp = (xmlChar *) xmlDictLookup(style->dict, cur->content, -1);
3618 xmlNodeSetContent(cur, NULL);
3619 cur->content = tmp;
3620 }
3621 } else if ((cur->type != XML_ELEMENT_NODE) &&
3622 (cur->type != XML_CDATA_SECTION_NODE)) {
3623 deleteNode = cur;
3624 goto skip_children;
3625 }
3626
3627 /*
3628 * Skip to next node. In case of a namespaced element children of
3629 * the stylesheet and not in the XSLT namespace and not an extension
3630 * element, ignore its content.
3631 */
3632 if ((cur->type == XML_ELEMENT_NODE) && (cur->ns != NULL) &&
3633 (styleelem != NULL) && (cur->parent == styleelem) &&
3634 (!xmlStrEqual(cur->ns->href, XSLT_NAMESPACE)) &&
3635 (!xsltCheckExtURI(style, cur->ns->href))) {
3636 goto skip_children;
3637 } else if (cur->children != NULL) {
3638 if ((cur->children->type != XML_ENTITY_DECL) &&
3639 (cur->children->type != XML_ENTITY_REF_NODE) &&
3640 (cur->children->type != XML_ENTITY_NODE)) {
3641 cur = cur->children;
3642 continue;
3643 }
3644 }
3645
3646 skip_children:
3647 if (cur->next != NULL) {
3648 cur = cur->next;
3649 continue;
3650 }
3651 do {
3652
3653 cur = cur->parent;
3654 if (cur == NULL)
3655 break;
3656 if (cur == (xmlNodePtr) style->doc) {
3657 cur = NULL;
3658 break;
3659 }
3660 if (cur->next != NULL) {
3661 cur = cur->next;
3662 break;
3663 }
3664 } while (cur != NULL);
3665 }
3666 if (deleteNode != NULL) {
3667 #ifdef WITH_XSLT_DEBUG_PARSING
3668 xsltGenericDebug(xsltGenericDebugContext,
3669 "xsltPreprocessStylesheet: removing ignorable blank node\n");
3670 #endif
3671 xmlUnlinkNode(deleteNode);
3672 xmlFreeNode(deleteNode);
3673 }
3674 }
3675 #endif /* end of else XSLT_REFACTORED */
3676
3677 /**
3678 * xsltGatherNamespaces:
3679 * @style: the XSLT stylesheet
3680 *
3681 * Browse the stylesheet and build the namspace hash table which
3682 * will be used for XPath interpretation. If needed do a bit of normalization
3683 */
3684
3685 static void
3686 xsltGatherNamespaces(xsltStylesheetPtr style) {
3687 xmlNodePtr cur;
3688 const xmlChar *URI;
3689
3690 if (style == NULL)
3691 return;
3692 /*
3693 * TODO: basically if the stylesheet uses the same prefix for different
3694 * patterns, well they may be in problem, hopefully they will get
3695 * a warning first.
3696 */
3697 /*
3698 * TODO: Eliminate the use of the hash for XPath expressions.
3699 * An expression should be evaluated in the context of the in-scope
3700 * namespaces; eliminate the restriction of an XML document to contain
3701 * no duplicate prefixes for different namespace names.
3702 *
3703 */
3704 cur = xmlDocGetRootElement(style->doc);
3705 while (cur != NULL) {
3706 if (cur->type == XML_ELEMENT_NODE) {
3707 xmlNsPtr ns = cur->nsDef;
3708 while (ns != NULL) {
3709 if (ns->prefix != NULL) {
3710 if (style->nsHash == NULL) {
3711 style->nsHash = xmlHashCreate(10);
3712 if (style->nsHash == NULL) {
3713 xsltTransformError(NULL, style, cur,
3714 "xsltGatherNamespaces: failed to create hash table\n");
3715 style->errors++;
3716 return;
3717 }
3718 }
3719 URI = xmlHashLookup(style->nsHash, ns->prefix);
3720 if ((URI != NULL) && (!xmlStrEqual(URI, ns->href))) {
3721 xsltTransformError(NULL, style, cur,
3722 "Namespaces prefix %s used for multiple namespaces\n",ns->prefix);
3723 style->warnings++;
3724 } else if (URI == NULL) {
3725 xmlHashUpdateEntry(style->nsHash, ns->prefix,
3726 (void *) ns->href, (xmlHashDeallocator)xmlFree);
3727
3728 #ifdef WITH_XSLT_DEBUG_PARSING
3729 xsltGenericDebug(xsltGenericDebugContext,
3730 "Added namespace: %s mapped to %s\n", ns->prefix, ns->href);
3731 #endif
3732 }
3733 }
3734 ns = ns->next;
3735 }
3736 }
3737
3738 /*
3739 * Skip to next node
3740 */
3741 if (cur->children != NULL) {
3742 if (cur->children->type != XML_ENTITY_DECL) {
3743 cur = cur->children;
3744 continue;
3745 }
3746 }
3747 if (cur->next != NULL) {
3748 cur = cur->next;
3749 continue;
3750 }
3751
3752 do {
3753 cur = cur->parent;
3754 if (cur == NULL)
3755 break;
3756 if (cur == (xmlNodePtr) style->doc) {
3757 cur = NULL;
3758 break;
3759 }
3760 if (cur->next != NULL) {
3761 cur = cur->next;
3762 break;
3763 }
3764 } while (cur != NULL);
3765 }
3766 }
3767
3768 #ifdef XSLT_REFACTORED
3769
3770 static xsltStyleType
3771 xsltGetXSLTElementTypeByNode(xsltCompilerCtxtPtr cctxt,
3772 xmlNodePtr node)
3773 {
3774 if ((node == NULL) || (node->type != XML_ELEMENT_NODE) ||
3775 (node->name == NULL))
3776 return(0);
3777
3778 if (node->name[0] == 'a') {
3779 if (IS_XSLT_NAME(node, "apply-templates"))
3780 return(XSLT_FUNC_APPLYTEMPLATES);
3781 else if (IS_XSLT_NAME(node, "attribute"))
3782 return(XSLT_FUNC_ATTRIBUTE);
3783 else if (IS_XSLT_NAME(node, "apply-imports"))
3784 return(XSLT_FUNC_APPLYIMPORTS);
3785 else if (IS_XSLT_NAME(node, "attribute-set"))
3786 return(0);
3787
3788 } else if (node->name[0] == 'c') {
3789 if (IS_XSLT_NAME(node, "choose"))
3790 return(XSLT_FUNC_CHOOSE);
3791 else if (IS_XSLT_NAME(node, "copy"))
3792 return(XSLT_FUNC_COPY);
3793 else if (IS_XSLT_NAME(node, "copy-of"))
3794 return(XSLT_FUNC_COPYOF);
3795 else if (IS_XSLT_NAME(node, "call-template"))
3796 return(XSLT_FUNC_CALLTEMPLATE);
3797 else if (IS_XSLT_NAME(node, "comment"))
3798 return(XSLT_FUNC_COMMENT);
3799
3800 } else if (node->name[0] == 'd') {
3801 if (IS_XSLT_NAME(node, "document"))
3802 return(XSLT_FUNC_DOCUMENT);
3803 else if (IS_XSLT_NAME(node, "decimal-format"))
3804 return(0);
3805
3806 } else if (node->name[0] == 'e') {
3807 if (IS_XSLT_NAME(node, "element"))
3808 return(XSLT_FUNC_ELEMENT);
3809
3810 } else if (node->name[0] == 'f') {
3811 if (IS_XSLT_NAME(node, "for-each"))
3812 return(XSLT_FUNC_FOREACH);
3813 else if (IS_XSLT_NAME(node, "fallback"))
3814 return(XSLT_FUNC_FALLBACK);
3815
3816 } else if (*(node->name) == 'i') {
3817 if (IS_XSLT_NAME(node, "if"))
3818 return(XSLT_FUNC_IF);
3819 else if (IS_XSLT_NAME(node, "include"))
3820 return(0);
3821 else if (IS_XSLT_NAME(node, "import"))
3822 return(0);
3823
3824 } else if (*(node->name) == 'k') {
3825 if (IS_XSLT_NAME(node, "key"))
3826 return(0);
3827
3828 } else if (*(node->name) == 'm') {
3829 if (IS_XSLT_NAME(node, "message"))
3830 return(XSLT_FUNC_MESSAGE);
3831
3832 } else if (*(node->name) == 'n') {
3833 if (IS_XSLT_NAME(node, "number"))
3834 return(XSLT_FUNC_NUMBER);
3835 else if (IS_XSLT_NAME(node, "namespace-alias"))
3836 return(0);
3837
3838 } else if (*(node->name) == 'o') {
3839 if (IS_XSLT_NAME(node, "otherwise"))
3840 return(XSLT_FUNC_OTHERWISE);
3841 else if (IS_XSLT_NAME(node, "output"))
3842 return(0);
3843
3844 } else if (*(node->name) == 'p') {
3845 if (IS_XSLT_NAME(node, "param"))
3846 return(XSLT_FUNC_PARAM);
3847 else if (IS_XSLT_NAME(node, "processing-instruction"))
3848 return(XSLT_FUNC_PI);
3849 else if (IS_XSLT_NAME(node, "preserve-space"))
3850 return(0);
3851
3852 } else if (*(node->name) == 's') {
3853 if (IS_XSLT_NAME(node, "sort"))
3854 return(XSLT_FUNC_SORT);
3855 else if (IS_XSLT_NAME(node, "strip-space"))
3856 return(0);
3857 else if (IS_XSLT_NAME(node, "stylesheet"))
3858 return(0);
3859
3860 } else if (node->name[0] == 't') {
3861 if (IS_XSLT_NAME(node, "text"))
3862 return(XSLT_FUNC_TEXT);
3863 else if (IS_XSLT_NAME(node, "template"))
3864 return(0);
3865 else if (IS_XSLT_NAME(node, "transform"))
3866 return(0);
3867
3868 } else if (*(node->name) == 'v') {
3869 if (IS_XSLT_NAME(node, "value-of"))
3870 return(XSLT_FUNC_VALUEOF);
3871 else if (IS_XSLT_NAME(node, "variable"))
3872 return(XSLT_FUNC_VARIABLE);
3873
3874 } else if (*(node->name) == 'w') {
3875 if (IS_XSLT_NAME(node, "when"))
3876 return(XSLT_FUNC_WHEN);
3877 if (IS_XSLT_NAME(node, "with-param"))
3878 return(XSLT_FUNC_WITHPARAM);
3879 }
3880 return(0);
3881 }
3882
3883 /**
3884 * xsltParseAnyXSLTElem:
3885 *
3886 * @cctxt: the compilation context
3887 * @elem: the element node of the XSLT instruction
3888 *
3889 * Parses, validates the content models and compiles XSLT instructions.
3890 *
3891 * Returns 0 if everything's fine;
3892 * -1 on API or internal errors.
3893 */
3894 int
3895 xsltParseAnyXSLTElem(xsltCompilerCtxtPtr cctxt, xmlNodePtr elem)
3896 {
3897 if ((cctxt == NULL) || (elem == NULL) ||
3898 (elem->type != XML_ELEMENT_NODE))
3899 return(-1);
3900
3901 elem->psvi = NULL;
3902
3903 if (! (IS_XSLT_ELEM_FAST(elem)))
3904 return(-1);
3905 /*
3906 * Detection of handled content of extension instructions.
3907 */
3908 if (cctxt->inode->category == XSLT_ELEMENT_CATEGORY_EXTENSION) {
3909 cctxt->inode->extContentHandled = 1;
3910 }
3911
3912 xsltCompilerNodePush(cctxt, elem);
3913 /*
3914 * URGENT TODO: Find a way to speed up this annoying redundant
3915 * textual node-name and namespace comparison.
3916 */
3917 if (cctxt->inode->prev->curChildType != 0)
3918 cctxt->inode->type = cctxt->inode->prev->curChildType;
3919 else
3920 cctxt->inode->type = xsltGetXSLTElementTypeByNode(cctxt, elem);
3921 /*
3922 * Update the in-scope namespaces if needed.
3923 */
3924 if (elem->nsDef != NULL)
3925 cctxt->inode->inScopeNs =
3926 xsltCompilerBuildInScopeNsList(cctxt, elem);
3927 /*
3928 * xsltStylePreCompute():
3929 * This will compile the information found on the current
3930 * element's attributes. NOTE that this won't process the
3931 * children of the instruction.
3932 */
3933 xsltStylePreCompute(cctxt->style, elem);
3934 /*
3935 * TODO: How to react on errors in xsltStylePreCompute() ?
3936 */
3937
3938 /*
3939 * Validate the content model of the XSLT-element.
3940 */
3941 switch (cctxt->inode->type) {
3942 case XSLT_FUNC_APPLYIMPORTS:
3943 /* EMPTY */
3944 goto empty_content;
3945 case XSLT_FUNC_APPLYTEMPLATES:
3946 /* <!-- Content: (xsl:sort | xsl:with-param)* --> */
3947 goto apply_templates;
3948 case XSLT_FUNC_ATTRIBUTE:
3949 /* <!-- Content: template --> */
3950 goto sequence_constructor;
3951 case XSLT_FUNC_CALLTEMPLATE:
3952 /* <!-- Content: xsl:with-param* --> */
3953 goto call_template;
3954 case XSLT_FUNC_CHOOSE:
3955 /* <!-- Content: (xsl:when+, xsl:otherwise?) --> */
3956 goto choose;
3957 case XSLT_FUNC_COMMENT:
3958 /* <!-- Content: template --> */
3959 goto sequence_constructor;
3960 case XSLT_FUNC_COPY:
3961 /* <!-- Content: template --> */
3962 goto sequence_constructor;
3963 case XSLT_FUNC_COPYOF:
3964 /* EMPTY */
3965 goto empty_content;
3966 case XSLT_FUNC_DOCUMENT: /* Extra one */
3967 /* ?? template ?? */
3968 goto sequence_constructor;
3969 case XSLT_FUNC_ELEMENT:
3970 /* <!-- Content: template --> */
3971 goto sequence_constructor;
3972 case XSLT_FUNC_FALLBACK:
3973 /* <!-- Content: template --> */
3974 goto sequence_constructor;
3975 case XSLT_FUNC_FOREACH:
3976 /* <!-- Content: (xsl:sort*, template) --> */
3977 goto for_each;
3978 case XSLT_FUNC_IF:
3979 /* <!-- Content: template --> */
3980 goto sequence_constructor;
3981 case XSLT_FUNC_OTHERWISE:
3982 /* <!-- Content: template --> */
3983 goto sequence_constructor;
3984 case XSLT_FUNC_MESSAGE:
3985 /* <!-- Content: template --> */
3986 goto sequence_constructor;
3987 case XSLT_FUNC_NUMBER:
3988 /* EMPTY */
3989 goto empty_content;
3990 case XSLT_FUNC_PARAM:
3991 /*
3992 * Check for redefinition.
3993 */
3994 if ((elem->psvi != NULL) && (cctxt->ivar != NULL)) {
3995 xsltVarInfoPtr ivar = cctxt->ivar;
3996
3997 do {
3998 if ((ivar->name ==
3999 ((xsltStyleItemParamPtr) elem->psvi)->name) &&
4000 (ivar->nsName ==
4001 ((xsltStyleItemParamPtr) elem->psvi)->ns))
4002 {
4003 elem->psvi = NULL;
4004 xsltTransformError(NULL, cctxt->style, elem,
4005 "Redefinition of variable or parameter '%s'.\n",
4006 ivar->name);
4007 cctxt->style->errors++;
4008 goto error;
4009 }
4010 ivar = ivar->prev;
4011 } while (ivar != NULL);
4012 }
4013 /* <!-- Content: template --> */
4014 goto sequence_constructor;
4015 case XSLT_FUNC_PI:
4016 /* <!-- Content: template --> */
4017 goto sequence_constructor;
4018 case XSLT_FUNC_SORT:
4019 /* EMPTY */
4020 goto empty_content;
4021 case XSLT_FUNC_TEXT:
4022 /* <!-- Content: #PCDATA --> */
4023 goto text;
4024 case XSLT_FUNC_VALUEOF:
4025 /* EMPTY */
4026 goto empty_content;
4027 case XSLT_FUNC_VARIABLE:
4028 /*
4029 * Check for redefinition.
4030 */
4031 if ((elem->psvi != NULL) && (cctxt->ivar != NULL)) {
4032 xsltVarInfoPtr ivar = cctxt->ivar;
4033
4034 do {
4035 if ((ivar->name ==
4036 ((xsltStyleItemVariablePtr) elem->psvi)->name) &&
4037 (ivar->nsName ==
4038 ((xsltStyleItemVariablePtr) elem->psvi)->ns))
4039 {
4040 elem->psvi = NULL;
4041 xsltTransformError(NULL, cctxt->style, elem,
4042 "Redefinition of variable or parameter '%s'.\n",
4043 ivar->name);
4044 cctxt->style->errors++;
4045 goto error;
4046 }
4047 ivar = ivar->prev;
4048 } while (ivar != NULL);
4049 }
4050 /* <!-- Content: template --> */
4051 goto sequence_constructor;
4052 case XSLT_FUNC_WHEN:
4053 /* <!-- Content: template --> */
4054 goto sequence_constructor;
4055 case XSLT_FUNC_WITHPARAM:
4056 /* <!-- Content: template --> */
4057 goto sequence_constructor;
4058 default:
4059 #ifdef WITH_XSLT_DEBUG_PARSING
4060 xsltGenericDebug(xsltGenericDebugContext,
4061 "xsltParseXSLTNode: Unhandled XSLT element '%s'.\n",
4062 elem->name);
4063 #endif
4064 xsltTransformError(NULL, cctxt->style, elem,
4065 "xsltParseXSLTNode: Internal error; "
4066 "unhandled XSLT element '%s'.\n", elem->name);
4067 cctxt->style->errors++;
4068 goto internal_err;
4069 }
4070
4071 apply_templates:
4072 /* <!-- Content: (xsl:sort | xsl:with-param)* --> */
4073 if (elem->children != NULL) {
4074 xmlNodePtr child = elem->children;
4075 do {
4076 if (child->type == XML_ELEMENT_NODE) {
4077 if (IS_XSLT_ELEM_FAST(child)) {
4078 if (xmlStrEqual(child->name, BAD_CAST "with-param")) {
4079 cctxt->inode->curChildType = XSLT_FUNC_WITHPARAM;
4080 xsltParseAnyXSLTElem(cctxt, child);
4081 } else if (xmlStrEqual(child->name, BAD_CAST "sort")) {
4082 cctxt->inode->curChildType = XSLT_FUNC_SORT;
4083 xsltParseAnyXSLTElem(cctxt, child);
4084 } else
4085 xsltParseContentError(cctxt->style, child);
4086 } else
4087 xsltParseContentError(cctxt->style, child);
4088 }
4089 child = child->next;
4090 } while (child != NULL);
4091 }
4092 goto exit;
4093
4094 call_template:
4095 /* <!-- Content: xsl:with-param* --> */
4096 if (elem->children != NULL) {
4097 xmlNodePtr child = elem->children;
4098 do {
4099 if (child->type == XML_ELEMENT_NODE) {
4100 if (IS_XSLT_ELEM_FAST(child)) {
4101 xsltStyleType type;
4102
4103 type = xsltGetXSLTElementTypeByNode(cctxt, child);
4104 if (type == XSLT_FUNC_WITHPARAM) {
4105 cctxt->inode->curChildType = XSLT_FUNC_WITHPARAM;
4106 xsltParseAnyXSLTElem(cctxt, child);
4107 } else {
4108 xsltParseContentError(cctxt->style, child);
4109 }
4110 } else
4111 xsltParseContentError(cctxt->style, child);
4112 }
4113 child = child->next;
4114 } while (child != NULL);
4115 }
4116 goto exit;
4117
4118 text:
4119 if (elem->children != NULL) {
4120 xmlNodePtr child = elem->children;
4121 do {
4122 if ((child->type != XML_TEXT_NODE) &&
4123 (child->type != XML_CDATA_SECTION_NODE))
4124 {
4125 xsltTransformError(NULL, cctxt->style, elem,
4126 "The XSLT 'text' element must have only character "
4127 "data as content.\n");
4128 }
4129 child = child->next;
4130 } while (child != NULL);
4131 }
4132 goto exit;
4133
4134 empty_content:
4135 if (elem->children != NULL) {
4136 xmlNodePtr child = elem->children;
4137 /*
4138 * Relaxed behaviour: we will allow whitespace-only text-nodes.
4139 */
4140 do {
4141 if (((child->type != XML_TEXT_NODE) &&
4142 (child->type != XML_CDATA_SECTION_NODE)) ||
4143 (! IS_BLANK_NODE(child)))
4144 {
4145 xsltTransformError(NULL, cctxt->style, elem,
4146 "This XSLT element must have no content.\n");
4147 cctxt->style->errors++;
4148 break;
4149 }
4150 child = child->next;
4151 } while (child != NULL);
4152 }
4153 goto exit;
4154
4155 choose:
4156 /* <!-- Content: (xsl:when+, xsl:otherwise?) --> */
4157 /*
4158 * TODO: text-nodes in between are *not* allowed in XSLT 1.0.
4159 * The old behaviour did not check this.
4160 * NOTE: In XSLT 2.0 they are stripped beforehand
4161 * if whitespace-only (regardless of xml:space).
4162 */
4163 if (elem->children != NULL) {
4164 xmlNodePtr child = elem->children;
4165 int nbWhen = 0, nbOtherwise = 0, err = 0;
4166 do {
4167 if (child->type == XML_ELEMENT_NODE) {
4168 if (IS_XSLT_ELEM_FAST(child)) {
4169 xsltStyleType type;
4170
4171 type = xsltGetXSLTElementTypeByNode(cctxt, child);
4172 if (type == XSLT_FUNC_WHEN) {
4173 nbWhen++;
4174 if (nbOtherwise) {
4175 xsltParseContentError(cctxt->style, child);
4176 err = 1;
4177 break;
4178 }
4179 cctxt->inode->curChildType = XSLT_FUNC_WHEN;
4180 xsltParseAnyXSLTElem(cctxt, child);
4181 } else if (type == XSLT_FUNC_OTHERWISE) {
4182 if (! nbWhen) {
4183 xsltParseContentError(cctxt->style, child);
4184 err = 1;
4185 break;
4186 }
4187 if (nbOtherwise) {
4188 xsltTransformError(NULL, cctxt->style, elem,
4189 "The XSLT 'choose' element must not contain "
4190 "more than one XSLT 'otherwise' element.\n");
4191 cctxt->style->errors++;
4192 err = 1;
4193 break;
4194 }
4195 nbOtherwise++;
4196 cctxt->inode->curChildType = XSLT_FUNC_OTHERWISE;
4197 xsltParseAnyXSLTElem(cctxt, child);
4198 } else
4199 xsltParseContentError(cctxt->style, child);
4200 } else
4201 xsltParseContentError(cctxt->style, child);
4202 }
4203 /*
4204 else
4205 xsltParseContentError(cctxt, child);
4206 */
4207 child = child->next;
4208 } while (child != NULL);
4209 if ((! err) && (! nbWhen)) {
4210 xsltTransformError(NULL, cctxt->style, elem,
4211 "The XSLT element 'choose' must contain at least one "
4212 "XSLT element 'when'.\n");
4213 cctxt->style->errors++;
4214 }
4215 }
4216 goto exit;
4217
4218 for_each:
4219 /* <!-- Content: (xsl:sort*, template) --> */
4220 /*
4221 * NOTE: Text-nodes before xsl:sort are *not* allowed in XSLT 1.0.
4222 * The old behaviour did not allow this, but it catched this
4223 * only at transformation-time.
4224 * In XSLT 2.0 they are stripped beforehand if whitespace-only
4225 * (regardless of xml:space).
4226 */
4227 if (elem->children != NULL) {
4228 xmlNodePtr child = elem->children;
4229 /*
4230 * Parse xsl:sort first.
4231 */
4232 do {
4233 if ((child->type == XML_ELEMENT_NODE) &&
4234 IS_XSLT_ELEM_FAST(child))
4235 {
4236 if (xsltGetXSLTElementTypeByNode(cctxt, child) ==
4237 XSLT_FUNC_SORT)
4238 {
4239 cctxt->inode->curChildType = XSLT_FUNC_SORT;
4240 xsltParseAnyXSLTElem(cctxt, child);
4241 } else
4242 break;
4243 } else
4244 break;
4245 child = child->next;
4246 } while (child != NULL);
4247 /*
4248 * Parse the sequece constructor.
4249 */
4250 if (child != NULL)
4251 xsltParseSequenceConstructor(cctxt, child);
4252 }
4253 goto exit;
4254
4255 sequence_constructor:
4256 /*
4257 * Parse the sequence constructor.
4258 */
4259 if (elem->children != NULL)
4260 xsltParseSequenceConstructor(cctxt, elem->children);
4261
4262 /*
4263 * Register information for vars/params. Only needed if there
4264 * are any following siblings.
4265 */
4266 if ((elem->next != NULL) &&
4267 ((cctxt->inode->type == XSLT_FUNC_VARIABLE) ||
4268 (cctxt->inode->type == XSLT_FUNC_PARAM)))
4269 {
4270 if ((elem->psvi != NULL) &&
4271 (((xsltStyleBasicItemVariablePtr) elem->psvi)->name))
4272 {
4273 xsltCompilerVarInfoPush(cctxt, elem,
4274 ((xsltStyleBasicItemVariablePtr) elem->psvi)->name,
4275 ((xsltStyleBasicItemVariablePtr) elem->psvi)->ns);
4276 }
4277 }
4278
4279 error:
4280 exit:
4281 xsltCompilerNodePop(cctxt, elem);
4282 return(0);
4283
4284 internal_err:
4285 xsltCompilerNodePop(cctxt, elem);
4286 return(-1);
4287 }
4288
4289 /**
4290 * xsltForwardsCompatUnkownItemCreate:
4291 *
4292 * @cctxt: the compilation context
4293 *
4294 * Creates a compiled representation of the unknown
4295 * XSLT instruction.
4296 *
4297 * Returns the compiled representation.
4298 */
4299 static xsltStyleItemUknownPtr
4300 xsltForwardsCompatUnkownItemCreate(xsltCompilerCtxtPtr cctxt)
4301 {
4302 xsltStyleItemUknownPtr item;
4303
4304 item = (xsltStyleItemUknownPtr) xmlMalloc(sizeof(xsltStyleItemUknown));
4305 if (item == NULL) {
4306 xsltTransformError(NULL, cctxt->style, NULL,
4307 "Internal error in xsltForwardsCompatUnkownItemCreate(): "
4308 "Failed to allocate memory.\n");
4309 cctxt->style->errors++;
4310 return(NULL);
4311 }
4312 memset(item, 0, sizeof(xsltStyleItemUknown));
4313 item->type = XSLT_FUNC_UNKOWN_FORWARDS_COMPAT;
4314 /*
4315 * Store it in the stylesheet.
4316 */
4317 item->next = cctxt->style->preComps;
4318 cctxt->style->preComps = (xsltElemPreCompPtr) item;
4319 return(item);
4320 }
4321
4322 /**
4323 * xsltParseUnknownXSLTElem:
4324 *
4325 * @cctxt: the compilation context
4326 * @node: the element of the unknown XSLT instruction
4327 *
4328 * Parses an unknown XSLT element.
4329 * If forwards compatible mode is enabled this will allow
4330 * such an unknown XSLT and; otherwise it is rejected.
4331 *
4332 * Returns 1 in the unknown XSLT instruction is rejected,
4333 * 0 if everything's fine and
4334 * -1 on API or internal errors.
4335 */
4336 static int
4337 xsltParseUnknownXSLTElem(xsltCompilerCtxtPtr cctxt,
4338 xmlNodePtr node)
4339 {
4340 if ((cctxt == NULL) || (node == NULL) || (node->type != XML_ELEMENT_NODE))
4341 return(-1);
4342
4343 /*
4344 * Detection of handled content of extension instructions.
4345 */
4346 if (cctxt->inode->category == XSLT_ELEMENT_CATEGORY_EXTENSION) {
4347 cctxt->inode->extContentHandled = 1;
4348 }
4349 if (cctxt->inode->forwardsCompat == 0) {
4350 /*
4351 * We are not in forwards-compatible mode, so raise an error.
4352 */
4353 xsltTransformError(NULL, cctxt->style, node,
4354 "Unknown XSLT element '%s'.\n", node->name);
4355 cctxt->style->errors++;
4356 return(1);
4357 }
4358 /*
4359 * Forwards-compatible mode.
4360 * ------------------------
4361 *
4362 * Parse/compile xsl:fallback elements.
4363 *
4364 * QUESTION: Do we have to raise an error if there's no xsl:fallback?
4365 * ANSWER: No, since in the stylesheet the fallback behaviour might
4366 * also be provided by using the XSLT function "element-available".
4367 */
4368 if (cctxt->unknownItem == NULL) {
4369 /*
4370 * Create a singleton for all unknown XSLT instructions.
4371 */
4372 cctxt->unknownItem = xsltForwardsCompatUnkownItemCreate(cctxt);
4373 if (cctxt->unknownItem == NULL) {
4374 node->psvi = NULL;
4375 return(-1);
4376 }
4377 }
4378 node->psvi = cctxt->unknownItem;
4379 if (node->children == NULL)
4380 return(0);
4381 else {
4382 xmlNodePtr child = node->children;
4383
4384 xsltCompilerNodePush(cctxt, node);
4385 /*
4386 * Update the in-scope namespaces if needed.
4387 */
4388 if (node->nsDef != NULL)
4389 cctxt->inode->inScopeNs =
4390 xsltCompilerBuildInScopeNsList(cctxt, node);
4391 /*
4392 * Parse all xsl:fallback children.
4393 */
4394 do {
4395 if ((child->type == XML_ELEMENT_NODE) &&
4396 IS_XSLT_ELEM_FAST(child) &&
4397 IS_XSLT_NAME(child, "fallback"))
4398 {
4399 cctxt->inode->curChildType = XSLT_FUNC_FALLBACK;
4400 xsltParseAnyXSLTElem(cctxt, child);
4401 }
4402 child = child->next;
4403 } while (child != NULL);
4404
4405 xsltCompilerNodePop(cctxt, node);
4406 }
4407 return(0);
4408 }
4409
4410 /**
4411 * xsltParseSequenceConstructor:
4412 *
4413 * @cctxt: the compilation context
4414 * @cur: the start-node of the content to be parsed
4415 *
4416 * Parses a "template" content (or "sequence constructor" in XSLT 2.0 terms).
4417 * This will additionally remove xsl:text elements from the tree.
4418 */
4419 void
4420 xsltParseSequenceConstructor(xsltCompilerCtxtPtr cctxt, xmlNodePtr cur)
4421 {
4422 xsltStyleType type;
4423 xmlNodePtr deleteNode = NULL;
4424
4425 if (cctxt == NULL) {
4426 xmlGenericError(xmlGenericErrorContext,
4427 "xsltParseSequenceConstructor: Bad arguments\n");
4428 cctxt->style->errors++;
4429 return;
4430 }
4431 /*
4432 * Detection of handled content of extension instructions.
4433 */
4434 if (cctxt->inode->category == XSLT_ELEMENT_CATEGORY_EXTENSION) {
4435 cctxt->inode->extContentHandled = 1;
4436 }
4437 if ((cur == NULL) || (cur->type == XML_NAMESPACE_DECL))
4438 return;
4439 /*
4440 * This is the content reffered to as a "template".
4441 * E.g. an xsl:element has such content model:
4442 * <xsl:element
4443 * name = { qname }
4444 * namespace = { uri-reference }
4445 * use-attribute-sets = qnames>
4446 * <!-- Content: template -->
4447 *
4448 * NOTE that in XSLT-2 the term "template" was abandoned due to
4449 * confusion with xsl:template and the term "sequence constructor"
4450 * was introduced instead.
4451 *
4452 * The following XSLT-instructions are allowed to appear:
4453 * xsl:apply-templates, xsl:call-template, xsl:apply-imports,
4454 * xsl:for-each, xsl:value-of, xsl:copy-of, xsl:number,
4455 * xsl:choose, xsl:if, xsl:text, xsl:copy, xsl:variable,
4456 * xsl:message, xsl:fallback,
4457 * xsl:processing-instruction, xsl:comment, xsl:element
4458 * xsl:attribute.
4459 * Additional allowed content:
4460 * 1) extension instructions
4461 * 2) literal result elements
4462 * 3) PCDATA
4463 *
4464 * NOTE that this content model does *not* allow xsl:param.
4465 */
4466 while (cur != NULL) {
4467 if (deleteNode != NULL) {
4468 #ifdef WITH_XSLT_DEBUG_BLANKS
4469 xsltGenericDebug(xsltGenericDebugContext,
4470 "xsltParseSequenceConstructor: removing xsl:text element\n");
4471 #endif
4472 xmlUnlinkNode(deleteNode);
4473 xmlFreeNode(deleteNode);
4474 deleteNode = NULL;
4475 }
4476 if (cur->type == XML_ELEMENT_NODE) {
4477
4478 if (cur->psvi == xsltXSLTTextMarker) {
4479 /*
4480 * xsl:text elements
4481 * --------------------------------------------------------
4482 */
4483 xmlNodePtr tmp;
4484
4485 cur->psvi = NULL;
4486 /*
4487 * Mark the xsl:text element for later deletion.
4488 */
4489 deleteNode = cur;
4490 /*
4491 * Validate content.
4492 */
4493 tmp = cur->children;
4494 if (tmp) {
4495 /*
4496 * We don't expect more than one text-node in the
4497 * content, since we already merged adjacent
4498 * text/CDATA-nodes and eliminated PI/comment-nodes.
4499 */
4500 if ((tmp->type == XML_TEXT_NODE) ||
4501 (tmp->next == NULL))
4502 {
4503 /*
4504 * Leave the contained text-node in the tree.
4505 */
4506 xmlUnlinkNode(tmp);
4507 xmlAddPrevSibling(cur, tmp);
4508 } else {
4509 tmp = NULL;
4510 xsltTransformError(NULL, cctxt->style, cur,
4511 "Element 'xsl:text': Invalid type "
4512 "of node found in content.\n");
4513 cctxt->style->errors++;
4514 }
4515 }
4516 if (cur->properties) {
4517 xmlAttrPtr attr;
4518 /*
4519 * TODO: We need to report errors for
4520 * invalid attrs.
4521 */
4522 attr = cur->properties;
4523 do {
4524 if ((attr->ns == NULL) &&
4525 (attr->name != NULL) &&
4526 (attr->name[0] == 'd') &&
4527 xmlStrEqual(attr->name,
4528 BAD_CAST "disable-output-escaping"))
4529 {
4530 /*
4531 * Attr "disable-output-escaping".
4532 * XSLT-2: This attribute is deprecated.
4533 */
4534 if ((attr->children != NULL) &&
4535 xmlStrEqual(attr->children->content,
4536 BAD_CAST "yes"))
4537 {
4538 /*
4539 * Disable output escaping for this
4540 * text node.
4541 */
4542 if (tmp)
4543 tmp->name = xmlStringTextNoenc;
4544 } else if ((attr->children == NULL) ||
4545 (attr->children->content == NULL) ||
4546 (!xmlStrEqual(attr->children->content,
4547 BAD_CAST "no")))
4548 {
4549 xsltTransformError(NULL, cctxt->style,
4550 cur,
4551 "Attribute 'disable-output-escaping': "
4552 "Invalid value. Expected is "
4553 "'yes' or 'no'.\n");
4554 cctxt->style->errors++;
4555 }
4556 break;
4557 }
4558 attr = attr->next;
4559 } while (attr != NULL);
4560 }
4561 } else if (IS_XSLT_ELEM_FAST(cur)) {
4562 /*
4563 * TODO: Using the XSLT-marker is still not stable yet.
4564 */
4565 /* if (cur->psvi == xsltXSLTElemMarker) { */
4566 /*
4567 * XSLT instructions
4568 * --------------------------------------------------------
4569 */
4570 cur->psvi = NULL;
4571 type = xsltGetXSLTElementTypeByNode(cctxt, cur);
4572 switch (type) {
4573 case XSLT_FUNC_APPLYIMPORTS:
4574 case XSLT_FUNC_APPLYTEMPLATES:
4575 case XSLT_FUNC_ATTRIBUTE:
4576 case XSLT_FUNC_CALLTEMPLATE:
4577 case XSLT_FUNC_CHOOSE:
4578 case XSLT_FUNC_COMMENT:
4579 case XSLT_FUNC_COPY:
4580 case XSLT_FUNC_COPYOF:
4581 case XSLT_FUNC_DOCUMENT: /* Extra one */
4582 case XSLT_FUNC_ELEMENT:
4583 case XSLT_FUNC_FALLBACK:
4584 case XSLT_FUNC_FOREACH:
4585 case XSLT_FUNC_IF:
4586 case XSLT_FUNC_MESSAGE:
4587 case XSLT_FUNC_NUMBER:
4588 case XSLT_FUNC_PI:
4589 case XSLT_FUNC_TEXT:
4590 case XSLT_FUNC_VALUEOF:
4591 case XSLT_FUNC_VARIABLE:
4592 /*
4593 * Parse the XSLT element.
4594 */
4595 cctxt->inode->curChildType = type;
4596 xsltParseAnyXSLTElem(cctxt, cur);
4597 break;
4598 default:
4599 xsltParseUnknownXSLTElem(cctxt, cur);
4600 cur = cur->next;
4601 continue;
4602 }
4603 } else {
4604 /*
4605 * Non-XSLT elements
4606 * -----------------
4607 */
4608 xsltCompilerNodePush(cctxt, cur);
4609 /*
4610 * Update the in-scope namespaces if needed.
4611 */
4612 if (cur->nsDef != NULL)
4613 cctxt->inode->inScopeNs =
4614 xsltCompilerBuildInScopeNsList(cctxt, cur);
4615 /*
4616 * The current element is either a literal result element
4617 * or an extension instruction.
4618 *
4619 * Process attr "xsl:extension-element-prefixes".
4620 * FUTURE TODO: IIRC in XSLT 2.0 this attribute must be
4621 * processed by the implementor of the extension function;
4622 * i.e., it won't be handled by the XSLT processor.
4623 */
4624 /* SPEC 1.0:
4625 * "exclude-result-prefixes" is only allowed on literal
4626 * result elements and "xsl:exclude-result-prefixes"
4627 * on xsl:stylesheet/xsl:transform.
4628 * SPEC 2.0:
4629 * "There are a number of standard attributes
4630 * that may appear on any XSLT element: specifically
4631 * version, exclude-result-prefixes,
4632 * extension-element-prefixes, xpath-default-namespace,
4633 * default-collation, and use-when."
4634 *
4635 * SPEC 2.0:
4636 * For literal result elements:
4637 * "xsl:version, xsl:exclude-result-prefixes,
4638 * xsl:extension-element-prefixes,
4639 * xsl:xpath-default-namespace,
4640 * xsl:default-collation, or xsl:use-when."
4641 */
4642 if (cur->properties)
4643 cctxt->inode->extElemNs =
4644 xsltParseExtElemPrefixes(cctxt,
4645 cur, cctxt->inode->extElemNs,
4646 XSLT_ELEMENT_CATEGORY_LRE);
4647 /*
4648 * Eval if we have an extension instruction here.
4649 */
4650 if ((cur->ns != NULL) &&
4651 (cctxt->inode->extElemNs != NULL) &&
4652 (xsltCheckExtPrefix(cctxt->style, cur->ns->href) == 1))
4653 {
4654 /*
4655 * Extension instructions
4656 * ----------------------------------------------------
4657 * Mark the node information.
4658 */
4659 cctxt->inode->category = XSLT_ELEMENT_CATEGORY_EXTENSION;
4660 cctxt->inode->extContentHandled = 0;
4661 if (cur->psvi != NULL) {
4662 cur->psvi = NULL;
4663 /*
4664 * TODO: Temporary sanity check.
4665 */
4666 xsltTransformError(NULL, cctxt->style, cur,
4667 "Internal error in xsltParseSequenceConstructor(): "
4668 "Occupied PSVI field.\n");
4669 cctxt->style->errors++;
4670 cur = cur->next;
4671 continue;
4672 }
4673 cur->psvi = (void *)
4674 xsltPreComputeExtModuleElement(cctxt->style, cur);
4675
4676 if (cur->psvi == NULL) {
4677 /*
4678 * OLD COMMENT: "Unknown element, maybe registered
4679 * at the context level. Mark it for later
4680 * recognition."
4681 * QUESTION: What does the xsltExtMarker mean?
4682 * ANSWER: It is used in
4683 * xsltApplySequenceConstructor() at
4684 * transformation-time to look out for extension
4685 * registered in the transformation context.
4686 */
4687 cur->psvi = (void *) xsltExtMarker;
4688 }
4689 /*
4690 * BIG NOTE: Now the ugly part. In previous versions
4691 * of Libxslt (until 1.1.16), all the content of an
4692 * extension instruction was processed and compiled without
4693 * the need of the extension-author to explicitely call
4694 * such a processing;.We now need to mimic this old
4695 * behaviour in order to avoid breaking old code
4696 * on the extension-author's side.
4697 * The mechanism:
4698 * 1) If the author does *not* set the
4699 * compile-time-flag @extContentHandled, then we'll
4700 * parse the content assuming that it's a "template"
4701 * (or "sequence constructor in XSLT 2.0 terms).
4702 * NOTE: If the extension is registered at
4703 * transformation-time only, then there's no way of
4704 * knowing that content shall be valid, and we'll
4705 * process the content the same way.
4706 * 2) If the author *does* set the flag, then we'll assume
4707 * that the author has handled the parsing him/herself
4708 * (e.g. called xsltParseSequenceConstructor(), etc.
4709 * explicitely in his/her code).
4710 */
4711 if ((cur->children != NULL) &&
4712 (cctxt->inode->extContentHandled == 0))
4713 {
4714 /*
4715 * Default parsing of the content using the
4716 * sequence-constructor model.
4717 */
4718 xsltParseSequenceConstructor(cctxt, cur->children);
4719 }
4720 } else {
4721 /*
4722 * Literal result element
4723 * ----------------------------------------------------
4724 * Allowed XSLT attributes:
4725 * xsl:extension-element-prefixes CDATA #IMPLIED
4726 * xsl:exclude-result-prefixes CDATA #IMPLIED
4727 * TODO: xsl:use-attribute-sets %qnames; #IMPLIED
4728 * xsl:version NMTOKEN #IMPLIED
4729 */
4730 cur->psvi = NULL;
4731 cctxt->inode->category = XSLT_ELEMENT_CATEGORY_LRE;
4732 if (cur->properties != NULL) {
4733 xmlAttrPtr attr = cur->properties;
4734 /*
4735 * Attribute "xsl:exclude-result-prefixes".
4736 */
4737 cctxt->inode->exclResultNs =
4738 xsltParseExclResultPrefixes(cctxt, cur,
4739 cctxt->inode->exclResultNs,
4740 XSLT_ELEMENT_CATEGORY_LRE);
4741 /*
4742 * Attribute "xsl:version".
4743 */
4744 xsltParseAttrXSLTVersion(cctxt, cur,
4745 XSLT_ELEMENT_CATEGORY_LRE);
4746 /*
4747 * Report invalid XSLT attributes.
4748 * For XSLT 1.0 only xsl:use-attribute-sets is allowed
4749 * next to xsl:version, xsl:exclude-result-prefixes and
4750 * xsl:extension-element-prefixes.
4751 *
4752 * Mark all XSLT attributes, in order to skip such
4753 * attributes when instantiating the LRE.
4754 */
4755 do {
4756 if ((attr->psvi != xsltXSLTAttrMarker) &&
4757 IS_XSLT_ATTR_FAST(attr))
4758 {
4759 if (! xmlStrEqual(attr->name,
4760 BAD_CAST "use-attribute-sets"))
4761 {
4762 xsltTransformError(NULL, cctxt->style,
4763 cur,
4764 "Unknown XSLT attribute '%s'.\n",
4765 attr->name);
4766 cctxt->style->errors++;
4767 } else {
4768 /*
4769 * XSLT attr marker.
4770 */
4771 attr->psvi = (void *) xsltXSLTAttrMarker;
4772 }
4773 }
4774 attr = attr->next;
4775 } while (attr != NULL);
4776 }
4777 /*
4778 * Create/reuse info for the literal result element.
4779 */
4780 if (cctxt->inode->nsChanged)
4781 xsltLREInfoCreate(cctxt, cur, 1);
4782 cur->psvi = cctxt->inode->litResElemInfo;
4783 /*
4784 * Apply ns-aliasing on the element and on its attributes.
4785 */
4786 if (cctxt->hasNsAliases)
4787 xsltLREBuildEffectiveNs(cctxt, cur);
4788 /*
4789 * Compile attribute value templates (AVT).
4790 */
4791 if (cur->properties) {
4792 xmlAttrPtr attr = cur->properties;
4793
4794 while (attr != NULL) {
4795 xsltCompileAttr(cctxt->style, attr);
4796 attr = attr->next;
4797 }
4798 }
4799 /*
4800 * Parse the content, which is defined to be a "template"
4801 * (or "sequence constructor" in XSLT 2.0 terms).
4802 */
4803 if (cur->children != NULL) {
4804 xsltParseSequenceConstructor(cctxt, cur->children);
4805 }
4806 }
4807 /*
4808 * Leave the non-XSLT element.
4809 */
4810 xsltCompilerNodePop(cctxt, cur);
4811 }
4812 }
4813 cur = cur->next;
4814 }
4815 if (deleteNode != NULL) {
4816 #ifdef WITH_XSLT_DEBUG_BLANKS
4817 xsltGenericDebug(xsltGenericDebugContext,
4818 "xsltParseSequenceConstructor: removing xsl:text element\n");
4819 #endif
4820 xmlUnlinkNode(deleteNode);
4821 xmlFreeNode(deleteNode);
4822 deleteNode = NULL;
4823 }
4824 }
4825
4826 /**
4827 * xsltParseTemplateContent:
4828 * @style: the XSLT stylesheet
4829 * @templ: the node containing the content to be parsed
4830 *
4831 * Parses and compiles the content-model of an xsl:template element.
4832 * Note that this is *not* the "template" content model (or "sequence
4833 * constructor" in XSLT 2.0); it it allows addional xsl:param
4834 * elements as immediate children of @templ.
4835 *
4836 * Called by:
4837 * exsltFuncFunctionComp() (EXSLT, functions.c)
4838 * So this is intended to be called from extension functions.
4839 */
4840 void
4841 xsltParseTemplateContent(xsltStylesheetPtr style, xmlNodePtr templ) {
4842 if ((style == NULL) || (templ == NULL) ||
4843 (templ->type == XML_NAMESPACE_DECL))
4844 return;
4845
4846 /*
4847 * Detection of handled content of extension instructions.
4848 */
4849 if (XSLT_CCTXT(style)->inode->category == XSLT_ELEMENT_CATEGORY_EXTENSION) {
4850 XSLT_CCTXT(style)->inode->extContentHandled = 1;
4851 }
4852
4853 if (templ->children != NULL) {
4854 xmlNodePtr child = templ->children;
4855 /*
4856 * Process xsl:param elements, which can only occur as the
4857 * immediate children of xsl:template (well, and of any
4858 * user-defined extension instruction if needed).
4859 */
4860 do {
4861 if ((child->type == XML_ELEMENT_NODE) &&
4862 IS_XSLT_ELEM_FAST(child) &&
4863 IS_XSLT_NAME(child, "param"))
4864 {
4865 XSLT_CCTXT(style)->inode->curChildType = XSLT_FUNC_PARAM;
4866 xsltParseAnyXSLTElem(XSLT_CCTXT(style), child);
4867 } else
4868 break;
4869 child = child->next;
4870 } while (child != NULL);
4871 /*
4872 * Parse the content and register the pattern.
4873 */
4874 xsltParseSequenceConstructor(XSLT_CCTXT(style), child);
4875 }
4876 }
4877
4878 #else /* XSLT_REFACTORED */
4879
4880 /**
4881 * xsltParseTemplateContent:
4882 * @style: the XSLT stylesheet
4883 * @templ: the container node (can be a document for literal results)
4884 *
4885 * parse a template content-model
4886 * Clean-up the template content from unwanted ignorable blank nodes
4887 * and process xslt:text
4888 */
4889 void
4890 xsltParseTemplateContent(xsltStylesheetPtr style, xmlNodePtr templ) {
4891 xmlNodePtr cur, delete;
4892
4893 if ((style == NULL) || (templ == NULL) ||
4894 (templ->type == XML_NAMESPACE_DECL)) return;
4895
4896 /*
4897 * This content comes from the stylesheet
4898 * For stylesheets, the set of whitespace-preserving
4899 * element names consists of just xsl:text.
4900 */
4901 cur = templ->children;
4902 delete = NULL;
4903 while (cur != NULL) {
4904 if (delete != NULL) {
4905 #ifdef WITH_XSLT_DEBUG_BLANKS
4906 xsltGenericDebug(xsltGenericDebugContext,
4907 "xsltParseTemplateContent: removing text\n");
4908 #endif
4909 xmlUnlinkNode(delete);
4910 xmlFreeNode(delete);
4911 delete = NULL;
4912 }
4913 if (IS_XSLT_ELEM(cur)) {
4914 xsltStylePreCompute(style, cur);
4915
4916 if (IS_XSLT_NAME(cur, "text")) {
4917 /*
4918 * TODO: Processing of xsl:text should be moved to
4919 * xsltPreprocessStylesheet(), since otherwise this
4920 * will be performed for every multiply included
4921 * stylesheet; i.e. this here is not skipped with
4922 * the use of the style->nopreproc flag.
4923 */
4924 if (cur->children != NULL) {
4925 xmlChar *prop;
4926 xmlNodePtr text = cur->children, next;
4927 int noesc = 0;
4928
4929 prop = xmlGetNsProp(cur,
4930 (const xmlChar *)"disable-output-escaping",
4931 NULL);
4932 if (prop != NULL) {
4933 #ifdef WITH_XSLT_DEBUG_PARSING
4934 xsltGenericDebug(xsltGenericDebugContext,
4935 "Disable escaping: %s\n", text->content);
4936 #endif
4937 if (xmlStrEqual(prop, (const xmlChar *)"yes")) {
4938 noesc = 1;
4939 } else if (!xmlStrEqual(prop,
4940 (const xmlChar *)"no")){
4941 xsltTransformError(NULL, style, cur,
4942 "xsl:text: disable-output-escaping allows only yes or no\n");
4943 style->warnings++;
4944
4945 }
4946 xmlFree(prop);
4947 }
4948
4949 while (text != NULL) {
4950 if (text->type == XML_COMMENT_NODE) {
4951 text = text->next;
4952 continue;
4953 }
4954 if ((text->type != XML_TEXT_NODE) &&
4955 (text->type != XML_CDATA_SECTION_NODE)) {
4956 xsltTransformError(NULL, style, cur,
4957 "xsltParseTemplateContent: xslt:text content problem\n");
4958 style->errors++;
4959 break;
4960 }
4961 if ((noesc) && (text->type != XML_CDATA_SECTION_NODE))
4962 text->name = xmlStringTextNoenc;
4963 text = text->next;
4964 }
4965
4966 /*
4967 * replace xsl:text by the list of childs
4968 */
4969 if (text == NULL) {
4970 text = cur->children;
4971 while (text != NULL) {
4972 if ((style->internalized) &&
4973 (text->content != NULL) &&
4974 (!xmlDictOwns(style->dict, text->content))) {
4975
4976 /*
4977 * internalize the text string
4978 */
4979 if (text->doc->dict != NULL) {
4980 const xmlChar *tmp;
4981
4982 tmp = xmlDictLookup(text->doc->dict,
4983 text->content, -1);
4984 if (tmp != text->content) {
4985 xmlNodeSetContent(text, NULL);
4986 text->content = (xmlChar *) tmp;
4987 }
4988 }
4989 }
4990
4991 next = text->next;
4992 xmlUnlinkNode(text);
4993 xmlAddPrevSibling(cur, text);
4994 text = next;
4995 }
4996 }
4997 }
4998 delete = cur;
4999 goto skip_children;
5000 }
5001 }
5002 else if ((cur->ns != NULL) && (style->nsDefs != NULL) &&
5003 (xsltCheckExtPrefix(style, cur->ns->prefix)))
5004 {
5005 /*
5006 * okay this is an extension element compile it too
5007 */
5008 xsltStylePreCompute(style, cur);
5009 }
5010 else if (cur->type == XML_ELEMENT_NODE)
5011 {
5012 /*
5013 * This is an element which will be output as part of the
5014 * template exectution, precompile AVT if found.
5015 */
5016 if ((cur->ns == NULL) && (style->defaultAlias != NULL)) {
5017 cur->ns = xmlSearchNsByHref(cur->doc, cur,
5018 style->defaultAlias);
5019 }
5020 if (cur->properties != NULL) {
5021 xmlAttrPtr attr = cur->properties;
5022
5023 while (attr != NULL) {
5024 xsltCompileAttr(style, attr);
5025 attr = attr->next;
5026 }
5027 }
5028 }
5029 /*
5030 * Skip to next node
5031 */
5032 if (cur->children != NULL) {
5033 if (cur->children->type != XML_ENTITY_DECL) {
5034 cur = cur->children;
5035 continue;
5036 }
5037 }
5038 skip_children:
5039 if (cur->next != NULL) {
5040 cur = cur->next;
5041 continue;
5042 }
5043
5044 do {
5045 cur = cur->parent;
5046 if (cur == NULL)
5047 break;
5048 if (cur == templ) {
5049 cur = NULL;
5050 break;
5051 }
5052 if (cur->next != NULL) {
5053 cur = cur->next;
5054 break;
5055 }
5056 } while (cur != NULL);
5057 }
5058 if (delete != NULL) {
5059 #ifdef WITH_XSLT_DEBUG_PARSING
5060 xsltGenericDebug(xsltGenericDebugContext,
5061 "xsltParseTemplateContent: removing text\n");
5062 #endif
5063 xmlUnlinkNode(delete);
5064 xmlFreeNode(delete);
5065 delete = NULL;
5066 }
5067
5068 /*
5069 * Skip the first params
5070 */
5071 cur = templ->children;
5072 while (cur != NULL) {
5073 if ((IS_XSLT_ELEM(cur)) && (!(IS_XSLT_NAME(cur, "param"))))
5074 break;
5075 cur = cur->next;
5076 }
5077
5078 /*
5079 * Browse the remainder of the template
5080 */
5081 while (cur != NULL) {
5082 if ((IS_XSLT_ELEM(cur)) && (IS_XSLT_NAME(cur, "param"))) {
5083 xmlNodePtr param = cur;
5084
5085 xsltTransformError(NULL, style, cur,
5086 "xsltParseTemplateContent: ignoring misplaced param element\n");
5087 if (style != NULL) style->warnings++;
5088 cur = cur->next;
5089 xmlUnlinkNode(param);
5090 xmlFreeNode(param);
5091 } else
5092 break;
5093 }
5094 }
5095
5096 #endif /* else XSLT_REFACTORED */
5097
5098 /**
5099 * xsltParseStylesheetKey:
5100 * @style: the XSLT stylesheet
5101 * @key: the "key" element
5102 *
5103 * <!-- Category: top-level-element -->
5104 * <xsl:key name = qname, match = pattern, use = expression />
5105 *
5106 * parse an XSLT stylesheet key definition and register it
5107 */
5108
5109 static void
5110 xsltParseStylesheetKey(xsltStylesheetPtr style, xmlNodePtr key) {
5111 xmlChar *prop = NULL;
5112 xmlChar *use = NULL;
5113 xmlChar *match = NULL;
5114 xmlChar *name = NULL;
5115 xmlChar *nameURI = NULL;
5116
5117 if ((style == NULL) || (key == NULL) || (key->type != XML_ELEMENT_NODE))
5118 return;
5119
5120 /*
5121 * Get arguments
5122 */
5123 prop = xmlGetNsProp(key, (const xmlChar *)"name", NULL);
5124 if (prop != NULL) {
5125 const xmlChar *URI;
5126
5127 /*
5128 * TODO: Don't use xsltGetQNameURI().
5129 */
5130 URI = xsltGetQNameURI(key, &prop);
5131 if (prop == NULL) {
5132 if (style != NULL) style->errors++;
5133 goto error;
5134 } else {
5135 name = prop;
5136 if (URI != NULL)
5137 nameURI = xmlStrdup(URI);
5138 }
5139 #ifdef WITH_XSLT_DEBUG_PARSING
5140 xsltGenericDebug(xsltGenericDebugContext,
5141 "xsltParseStylesheetKey: name %s\n", name);
5142 #endif
5143 } else {
5144 xsltTransformError(NULL, style, key,
5145 "xsl:key : error missing name\n");
5146 if (style != NULL) style->errors++;
5147 goto error;
5148 }
5149
5150 match = xmlGetNsProp(key, (const xmlChar *)"match", NULL);
5151 if (match == NULL) {
5152 xsltTransformError(NULL, style, key,
5153 "xsl:key : error missing match\n");
5154 if (style != NULL) style->errors++;
5155 goto error;
5156 }
5157
5158 use = xmlGetNsProp(key, (const xmlChar *)"use", NULL);
5159 if (use == NULL) {
5160 xsltTransformError(NULL, style, key,
5161 "xsl:key : error missing use\n");
5162 if (style != NULL) style->errors++;
5163 goto error;
5164 }
5165
5166 /*
5167 * register the keys
5168 */
5169 xsltAddKey(style, name, nameURI, match, use, key);
5170
5171
5172 error:
5173 if (use != NULL)
5174 xmlFree(use);
5175 if (match != NULL)
5176 xmlFree(match);
5177 if (name != NULL)
5178 xmlFree(name);
5179 if (nameURI != NULL)
5180 xmlFree(nameURI);
5181
5182 if (key->children != NULL) {
5183 xsltParseContentError(style, key->children);
5184 }
5185 }
5186
5187 #ifdef XSLT_REFACTORED
5188 /**
5189 * xsltParseXSLTTemplate:
5190 * @style: the XSLT stylesheet
5191 * @template: the "template" element
5192 *
5193 * parse an XSLT stylesheet template building the associated structures
5194 * TODO: Is @style ever expected to be NULL?
5195 *
5196 * Called from:
5197 * xsltParseXSLTStylesheet()
5198 * xsltParseStylesheetTop()
5199 */
5200
5201 static void
5202 xsltParseXSLTTemplate(xsltCompilerCtxtPtr cctxt, xmlNodePtr templNode) {
5203 xsltTemplatePtr templ;
5204 xmlChar *prop;
5205 double priority;
5206
5207 if ((cctxt == NULL) || (templNode == NULL) ||
5208 (templNode->type != XML_ELEMENT_NODE))
5209 return;
5210
5211 /*
5212 * Create and link the structure
5213 */
5214 templ = xsltNewTemplate();
5215 if (templ == NULL)
5216 return;
5217
5218 xsltCompilerNodePush(cctxt, templNode);
5219 if (templNode->nsDef != NULL)
5220 cctxt->inode->inScopeNs =
5221 xsltCompilerBuildInScopeNsList(cctxt, templNode);
5222
5223 templ->next = cctxt->style->templates;
5224 cctxt->style->templates = templ;
5225 templ->style = cctxt->style;
5226
5227 /*
5228 * Attribute "mode".
5229 */
5230 prop = xmlGetNsProp(templNode, (const xmlChar *)"mode", NULL);
5231 if (prop != NULL) {
5232 const xmlChar *modeURI;
5233
5234 /*
5235 * TODO: We need a standardized function for extraction
5236 * of namespace names and local names from QNames.
5237 * Don't use xsltGetQNameURI() as it cannot channe�
5238 * reports through the context.
5239 */
5240 modeURI = xsltGetQNameURI(templNode, &prop);
5241 if (prop == NULL) {
5242 cctxt->style->errors++;
5243 goto error;
5244 }
5245 templ->mode = xmlDictLookup(cctxt->style->dict, prop, -1);
5246 xmlFree(prop);
5247 prop = NULL;
5248 if (xmlValidateNCName(templ->mode, 0)) {
5249 xsltTransformError(NULL, cctxt->style, templNode,
5250 "xsl:template: Attribute 'mode': The local part '%s' "
5251 "of the value is not a valid NCName.\n", templ->name);
5252 cctxt->style->errors++;
5253 goto error;
5254 }
5255 if (modeURI != NULL)
5256 templ->modeURI = xmlDictLookup(cctxt->style->dict, modeURI, -1);
5257 #ifdef WITH_XSLT_DEBUG_PARSING
5258 xsltGenericDebug(xsltGenericDebugContext,
5259 "xsltParseXSLTTemplate: mode %s\n", templ->mode);
5260 #endif
5261 }
5262 /*
5263 * Attribute "match".
5264 */
5265 prop = xmlGetNsProp(templNode, (const xmlChar *)"match", NULL);
5266 if (prop != NULL) {
5267 templ->match = prop;
5268 prop = NULL;
5269 }
5270 /*
5271 * Attribute "priority".
5272 */
5273 prop = xmlGetNsProp(templNode, (const xmlChar *)"priority", NULL);
5274 if (prop != NULL) {
5275 priority = xmlXPathStringEvalNumber(prop);
5276 templ->priority = (float) priority;
5277 xmlFree(prop);
5278 prop = NULL;
5279 }
5280 /*
5281 * Attribute "name".
5282 */
5283 prop = xmlGetNsProp(templNode, (const xmlChar *)"name", NULL);
5284 if (prop != NULL) {
5285 const xmlChar *nameURI;
5286 xsltTemplatePtr curTempl;
5287
5288 /*
5289 * TODO: Don't use xsltGetQNameURI().
5290 */
5291 nameURI = xsltGetQNameURI(templNode, &prop);
5292 if (prop == NULL) {
5293 cctxt->style->errors++;
5294 goto error;
5295 }
5296 templ->name = xmlDictLookup(cctxt->style->dict, prop, -1);
5297 xmlFree(prop);
5298 prop = NULL;
5299 if (xmlValidateNCName(templ->name, 0)) {
5300 xsltTransformError(NULL, cctxt->style, templNode,
5301 "xsl:template: Attribute 'name': The local part '%s' of "
5302 "the value is not a valid NCName.\n", templ->name);
5303 cctxt->style->errors++;
5304 goto error;
5305 }
5306 if (nameURI != NULL)
5307 templ->nameURI = xmlDictLookup(cctxt->style->dict, nameURI, -1);
5308 curTempl = templ->next;
5309 while (curTempl != NULL) {
5310 if ((nameURI != NULL && xmlStrEqual(curTempl->name, templ->name) &&
5311 xmlStrEqual(curTempl->nameURI, nameURI) ) ||
5312 (nameURI == NULL && curTempl->nameURI == NULL &&
5313 xmlStrEqual(curTempl->name, templ->name)))
5314 {
5315 xsltTransformError(NULL, cctxt->style, templNode,
5316 "xsl:template: error duplicate name '%s'\n", templ->name);
5317 cctxt->style->errors++;
5318 goto error;
5319 }
5320 curTempl = curTempl->next;
5321 }
5322 }
5323 if (templNode->children != NULL) {
5324 xsltParseTemplateContent(cctxt->style, templNode);
5325 /*
5326 * MAYBE TODO: Custom behaviour: In order to stay compatible with
5327 * Xalan and MSXML(.NET), we could allow whitespace
5328 * to appear before an xml:param element; this whitespace
5329 * will additionally become part of the "template".
5330 * NOTE that this is totally deviates from the spec, but
5331 * is the de facto behaviour of Xalan and MSXML(.NET).
5332 * Personally I wouldn't allow this, since if we have:
5333 * <xsl:template ...xml:space="preserve">
5334 * <xsl:param name="foo"/>
5335 * <xsl:param name="bar"/>
5336 * <xsl:param name="zoo"/>
5337 * ... the whitespace between every xsl:param would be
5338 * added to the result tree.
5339 */
5340 }
5341
5342 templ->elem = templNode;
5343 templ->content = templNode->children;
5344 xsltAddTemplate(cctxt->style, templ, templ->mode, templ->modeURI);
5345
5346 error:
5347 xsltCompilerNodePop(cctxt, templNode);
5348 return;
5349 }
5350
5351 #else /* XSLT_REFACTORED */
5352
5353 /**
5354 * xsltParseStylesheetTemplate:
5355 * @style: the XSLT stylesheet
5356 * @template: the "template" element
5357 *
5358 * parse an XSLT stylesheet template building the associated structures
5359 */
5360
5361 static void
5362 xsltParseStylesheetTemplate(xsltStylesheetPtr style, xmlNodePtr template) {
5363 xsltTemplatePtr ret;
5364 xmlChar *prop;
5365 xmlChar *mode = NULL;
5366 xmlChar *modeURI = NULL;
5367 double priority;
5368
5369 if ((style == NULL) || (template == NULL) ||
5370 (template->type != XML_ELEMENT_NODE))
5371 return;
5372
5373 /*
5374 * Create and link the structure
5375 */
5376 ret = xsltNewTemplate();
5377 if (ret == NULL)
5378 return;
5379 ret->next = style->templates;
5380 style->templates = ret;
5381 ret->style = style;
5382
5383 /*
5384 * Get inherited namespaces
5385 */
5386 /*
5387 * TODO: Apply the optimized in-scope-namespace mechanism
5388 * as for the other XSLT instructions.
5389 */
5390 xsltGetInheritedNsList(style, ret, template);
5391
5392 /*
5393 * Get arguments
5394 */
5395 prop = xmlGetNsProp(template, (const xmlChar *)"mode", NULL);
5396 if (prop != NULL) {
5397 const xmlChar *URI;
5398
5399 /*
5400 * TODO: Don't use xsltGetQNameURI().
5401 */
5402 URI = xsltGetQNameURI(template, &prop);
5403 if (prop == NULL) {
5404 if (style != NULL) style->errors++;
5405 goto error;
5406 } else {
5407 mode = prop;
5408 if (URI != NULL)
5409 modeURI = xmlStrdup(URI);
5410 }
5411 ret->mode = xmlDictLookup(style->dict, mode, -1);
5412 ret->modeURI = xmlDictLookup(style->dict, modeURI, -1);
5413 #ifdef WITH_XSLT_DEBUG_PARSING
5414 xsltGenericDebug(xsltGenericDebugContext,
5415 "xsltParseStylesheetTemplate: mode %s\n", mode);
5416 #endif
5417 if (mode != NULL) xmlFree(mode);
5418 if (modeURI != NULL) xmlFree(modeURI);
5419 }
5420 prop = xmlGetNsProp(template, (const xmlChar *)"match", NULL);
5421 if (prop != NULL) {
5422 if (ret->match != NULL) xmlFree(ret->match);
5423 ret->match = prop;
5424 }
5425
5426 prop = xmlGetNsProp(template, (const xmlChar *)"priority", NULL);
5427 if (prop != NULL) {
5428 priority = xmlXPathStringEvalNumber(prop);
5429 ret->priority = (float) priority;
5430 xmlFree(prop);
5431 }
5432
5433 prop = xmlGetNsProp(template, (const xmlChar *)"name", NULL);
5434 if (prop != NULL) {
5435 const xmlChar *URI;
5436
5437 /*
5438 * TODO: Don't use xsltGetQNameURI().
5439 */
5440 URI = xsltGetQNameURI(template, &prop);
5441 if (prop == NULL) {
5442 if (style != NULL) style->errors++;
5443 goto error;
5444 } else {
5445 if (xmlValidateNCName(prop,0)) {
5446 xsltTransformError(NULL, style, template,
5447 "xsl:template : error invalid name '%s'\n", prop);
5448 if (style != NULL) style->errors++;
5449 goto error;
5450 }
5451 ret->name = xmlDictLookup(style->dict, BAD_CAST prop, -1);
5452 xmlFree(prop);
5453 prop = NULL;
5454 if (URI != NULL)
5455 ret->nameURI = xmlDictLookup(style->dict, BAD_CAST URI, -1);
5456 else
5457 ret->nameURI = NULL;
5458 }
5459 }
5460
5461 /*
5462 * parse the content and register the pattern
5463 */
5464 xsltParseTemplateContent(style, template);
5465 ret->elem = template;
5466 ret->content = template->children;
5467 xsltAddTemplate(style, ret, ret->mode, ret->modeURI);
5468
5469 error:
5470 return;
5471 }
5472
5473 #endif /* else XSLT_REFACTORED */
5474
5475 #ifdef XSLT_REFACTORED
5476
5477 /**
5478 * xsltIncludeComp:
5479 * @cctxt: the compilation contenxt
5480 * @node: the xsl:include node
5481 *
5482 * Process the xslt include node on the source node
5483 */
5484 static xsltStyleItemIncludePtr
5485 xsltCompileXSLTIncludeElem(xsltCompilerCtxtPtr cctxt, xmlNodePtr node) {
5486 xsltStyleItemIncludePtr item;
5487
5488 if ((cctxt == NULL) || (node == NULL) || (node->type != XML_ELEMENT_NODE))
5489 return(NULL);
5490
5491 node->psvi = NULL;
5492 item = (xsltStyleItemIncludePtr) xmlMalloc(sizeof(xsltStyleItemInclude));
5493 if (item == NULL) {
5494 xsltTransformError(NULL, cctxt->style, node,
5495 "xsltIncludeComp : malloc failed\n");
5496 cctxt->style->errors++;
5497 return(NULL);
5498 }
5499 memset(item, 0, sizeof(xsltStyleItemInclude));
5500
5501 node->psvi = item;
5502 item->inst = node;
5503 item->type = XSLT_FUNC_INCLUDE;
5504
5505 item->next = cctxt->style->preComps;
5506 cctxt->style->preComps = (xsltElemPreCompPtr) item;
5507
5508 return(item);
5509 }
5510
5511 /**
5512 * xsltParseFindTopLevelElem:
5513 */
5514 static int
5515 xsltParseFindTopLevelElem(xsltCompilerCtxtPtr cctxt,
5516 xmlNodePtr cur,
5517 const xmlChar *name,
5518 const xmlChar *namespaceURI,
5519 int breakOnOtherElem,
5520 xmlNodePtr *resultNode)
5521 {
5522 if (name == NULL)
5523 return(-1);
5524
5525 *resultNode = NULL;
5526 while (cur != NULL) {
5527 if (cur->type == XML_ELEMENT_NODE) {
5528 if ((cur->ns != NULL) && (cur->name != NULL)) {
5529 if ((*(cur->name) == *name) &&
5530 xmlStrEqual(cur->name, name) &&
5531 xmlStrEqual(cur->ns->href, namespaceURI))
5532 {
5533 *resultNode = cur;
5534 return(1);
5535 }
5536 }
5537 if (breakOnOtherElem)
5538 break;
5539 }
5540 cur = cur->next;
5541 }
5542 *resultNode = cur;
5543 return(0);
5544 }
5545
5546 static int
5547 xsltParseTopLevelXSLTElem(xsltCompilerCtxtPtr cctxt,
5548 xmlNodePtr node,
5549 xsltStyleType type)
5550 {
5551 int ret = 0;
5552
5553 /*
5554 * TODO: The reason why this function exists:
5555 * due to historical reasons some of the
5556 * top-level declarations are processed by functions
5557 * in other files. Since we need still to set
5558 * up the node-info and generate information like
5559 * in-scope namespaces, this is a wrapper around
5560 * those old parsing functions.
5561 */
5562 xsltCompilerNodePush(cctxt, node);
5563 if (node->nsDef != NULL)
5564 cctxt->inode->inScopeNs =
5565 xsltCompilerBuildInScopeNsList(cctxt, node);
5566 cctxt->inode->type = type;
5567
5568 switch (type) {
5569 case XSLT_FUNC_INCLUDE:
5570 {
5571 int oldIsInclude;
5572
5573 if (xsltCompileXSLTIncludeElem(cctxt, node) == NULL)
5574 goto exit;
5575 /*
5576 * Mark this stylesheet tree as being currently included.
5577 */
5578 oldIsInclude = cctxt->isInclude;
5579 cctxt->isInclude = 1;
5580
5581 if (xsltParseStylesheetInclude(cctxt->style, node) != 0) {
5582 cctxt->style->errors++;
5583 }
5584 cctxt->isInclude = oldIsInclude;
5585 }
5586 break;
5587 case XSLT_FUNC_PARAM:
5588 xsltStylePreCompute(cctxt->style, node);
5589 xsltParseGlobalParam(cctxt->style, node);
5590 break;
5591 case XSLT_FUNC_VARIABLE:
5592 xsltStylePreCompute(cctxt->style, node);
5593 xsltParseGlobalVariable(cctxt->style, node);
5594 break;
5595 case XSLT_FUNC_ATTRSET:
5596 xsltParseStylesheetAttributeSet(cctxt->style, node);
5597 break;
5598 default:
5599 xsltTransformError(NULL, cctxt->style, node,
5600 "Internal error: (xsltParseTopLevelXSLTElem) "
5601 "Cannot handle this top-level declaration.\n");
5602 cctxt->style->errors++;
5603 ret = -1;
5604 }
5605
5606 exit:
5607 xsltCompilerNodePop(cctxt, node);
5608
5609 return(ret);
5610 }
5611
5612 #if 0
5613 static int
5614 xsltParseRemoveWhitespace(xmlNodePtr node)
5615 {
5616 if ((node == NULL) || (node->children == NULL))
5617 return(0);
5618 else {
5619 xmlNodePtr delNode = NULL, child = node->children;
5620
5621 do {
5622 if (delNode) {
5623 xmlUnlinkNode(delNode);
5624 xmlFreeNode(delNode);
5625 delNode = NULL;
5626 }
5627 if (((child->type == XML_TEXT_NODE) ||
5628 (child->type == XML_CDATA_SECTION_NODE)) &&
5629 (IS_BLANK_NODE(child)))
5630 delNode = child;
5631 child = child->next;
5632 } while (child != NULL);
5633 if (delNode) {
5634 xmlUnlinkNode(delNode);
5635 xmlFreeNode(delNode);
5636 delNode = NULL;
5637 }
5638 }
5639 return(0);
5640 }
5641 #endif
5642
5643 static int
5644 xsltParseXSLTStylesheetElemCore(xsltCompilerCtxtPtr cctxt, xmlNodePtr node)
5645 {
5646 #ifdef WITH_XSLT_DEBUG_PARSING
5647 int templates = 0;
5648 #endif
5649 xmlNodePtr cur, start = NULL;
5650 xsltStylesheetPtr style;
5651
5652 if ((cctxt == NULL) || (node == NULL) ||
5653 (node->type != XML_ELEMENT_NODE))
5654 return(-1);
5655
5656 style = cctxt->style;
5657 /*
5658 * At this stage all import declarations of all stylesheet modules
5659 * with the same stylesheet level have been processed.
5660 * Now we can safely parse the rest of the declarations.
5661 */
5662 if (IS_XSLT_ELEM_FAST(node) && IS_XSLT_NAME(node, "include"))
5663 {
5664 xsltDocumentPtr include;
5665 /*
5666 * URGENT TODO: Make this work with simplified stylesheets!
5667 * I.e., when we won't find an xsl:stylesheet element.
5668 */
5669 /*
5670 * This is as include declaration.
5671 */
5672 include = ((xsltStyleItemIncludePtr) node->psvi)->include;
5673 if (include == NULL) {
5674 /* TODO: raise error? */
5675 return(-1);
5676 }
5677 /*
5678 * TODO: Actually an xsl:include should locate an embedded
5679 * stylesheet as well; so the document-element won't always
5680 * be the element where the actual stylesheet is rooted at.
5681 * But such embedded stylesheets are not supported by Libxslt yet.
5682 */
5683 node = xmlDocGetRootElement(include->doc);
5684 if (node == NULL) {
5685 return(-1);
5686 }
5687 }
5688
5689 if (node->children == NULL)
5690 return(0);
5691 /*
5692 * Push the xsl:stylesheet/xsl:transform element.
5693 */
5694 xsltCompilerNodePush(cctxt, node);
5695 cctxt->inode->isRoot = 1;
5696 cctxt->inode->nsChanged = 0;
5697 /*
5698 * Start with the naked dummy info for literal result elements.
5699 */
5700 cctxt->inode->litResElemInfo = cctxt->inodeList->litResElemInfo;
5701
5702 /*
5703 * In every case, we need to have
5704 * the in-scope namespaces of the element, where the
5705 * stylesheet is rooted at, regardless if it's an XSLT
5706 * instruction or a literal result instruction (or if
5707 * this is an embedded stylesheet).
5708 */
5709 cctxt->inode->inScopeNs =
5710 xsltCompilerBuildInScopeNsList(cctxt, node);
5711
5712 /*
5713 * Process attributes of xsl:stylesheet/xsl:transform.
5714 * --------------------------------------------------
5715 * Allowed are:
5716 * id = id
5717 * extension-element-prefixes = tokens
5718 * exclude-result-prefixes = tokens
5719 * version = number (mandatory)
5720 */
5721 if (xsltParseAttrXSLTVersion(cctxt, node,
5722 XSLT_ELEMENT_CATEGORY_XSLT) == 0)
5723 {
5724 /*
5725 * Attribute "version".
5726 * XSLT 1.0: "An xsl:stylesheet element *must* have a version
5727 * attribute, indicating the version of XSLT that the
5728 * stylesheet requires".
5729 * The root element of a simplified stylesheet must also have
5730 * this attribute.
5731 */
5732 #ifdef XSLT_REFACTORED_MANDATORY_VERSION
5733 if (isXsltElem)
5734 xsltTransformError(NULL, cctxt->style, node,
5735 "The attribute 'version' is missing.\n");
5736 cctxt->style->errors++;
5737 #else
5738 /* OLD behaviour. */
5739 xsltTransformError(NULL, cctxt->style, node,
5740 "xsl:version is missing: document may not be a stylesheet\n");
5741 cctxt->style->warnings++;
5742 #endif
5743 }
5744 /*
5745 * The namespaces declared by the attributes
5746 * "extension-element-prefixes" and
5747 * "exclude-result-prefixes" are local to *this*
5748 * stylesheet tree; i.e., they are *not* visible to
5749 * other stylesheet-modules, whether imported or included.
5750 *
5751 * Attribute "extension-element-prefixes".
5752 */
5753 cctxt->inode->extElemNs =
5754 xsltParseExtElemPrefixes(cctxt, node, NULL,
5755 XSLT_ELEMENT_CATEGORY_XSLT);
5756 /*
5757 * Attribute "exclude-result-prefixes".
5758 */
5759 cctxt->inode->exclResultNs =
5760 xsltParseExclResultPrefixes(cctxt, node, NULL,
5761 XSLT_ELEMENT_CATEGORY_XSLT);
5762 /*
5763 * Create/reuse info for the literal result element.
5764 */
5765 if (cctxt->inode->nsChanged)
5766 xsltLREInfoCreate(cctxt, node, 0);
5767 /*
5768 * Processed top-level elements:
5769 * ----------------------------
5770 * xsl:variable, xsl:param (QName, in-scope ns,
5771 * expression (vars allowed))
5772 * xsl:attribute-set (QName, in-scope ns)
5773 * xsl:strip-space, xsl:preserve-space (XPath NameTests,
5774 * in-scope ns)
5775 * I *think* global scope, merge with includes
5776 * xsl:output (QName, in-scope ns)
5777 * xsl:key (QName, in-scope ns, pattern,
5778 * expression (vars *not* allowed))
5779 * xsl:decimal-format (QName, needs in-scope ns)
5780 * xsl:namespace-alias (in-scope ns)
5781 * global scope, merge with includes
5782 * xsl:template (last, QName, pattern)
5783 *
5784 * (whitespace-only text-nodes have *not* been removed
5785 * yet; this will be done in xsltParseSequenceConstructor)
5786 *
5787 * Report misplaced child-nodes first.
5788 */
5789 cur = node->children;
5790 while (cur != NULL) {
5791 if (cur->type == XML_TEXT_NODE) {
5792 xsltTransformError(NULL, style, cur,
5793 "Misplaced text node (content: '%s').\n",
5794 (cur->content != NULL) ? cur->content : BAD_CAST "");
5795 style->errors++;
5796 } else if (cur->type != XML_ELEMENT_NODE) {
5797 xsltTransformError(NULL, style, cur, "Misplaced node.\n");
5798 style->errors++;
5799 }
5800 cur = cur->next;
5801 }
5802 /*
5803 * Skip xsl:import elements; they have been processed
5804 * already.
5805 */
5806 cur = node->children;
5807 while ((cur != NULL) && xsltParseFindTopLevelElem(cctxt, cur,
5808 BAD_CAST "import", XSLT_NAMESPACE, 1, &cur) == 1)
5809 cur = cur->next;
5810 if (cur == NULL)
5811 goto exit;
5812
5813 start = cur;
5814 /*
5815 * Process all top-level xsl:param elements.
5816 */
5817 while ((cur != NULL) &&
5818 xsltParseFindTopLevelElem(cctxt, cur,
5819 BAD_CAST "param", XSLT_NAMESPACE, 0, &cur) == 1)
5820 {
5821 xsltParseTopLevelXSLTElem(cctxt, cur, XSLT_FUNC_PARAM);
5822 cur = cur->next;
5823 }
5824 /*
5825 * Process all top-level xsl:variable elements.
5826 */
5827 cur = start;
5828 while ((cur != NULL) &&
5829 xsltParseFindTopLevelElem(cctxt, cur,
5830 BAD_CAST "variable", XSLT_NAMESPACE, 0, &cur) == 1)
5831 {
5832 xsltParseTopLevelXSLTElem(cctxt, cur, XSLT_FUNC_VARIABLE);
5833 cur = cur->next;
5834 }
5835 /*
5836 * Process all the rest of top-level elements.
5837 */
5838 cur = start;
5839 while (cur != NULL) {
5840 /*
5841 * Process element nodes.
5842 */
5843 if (cur->type == XML_ELEMENT_NODE) {
5844 if (cur->ns == NULL) {
5845 xsltTransformError(NULL, style, cur,
5846 "Unexpected top-level element in no namespace.\n");
5847 style->errors++;
5848 cur = cur->next;
5849 continue;
5850 }
5851 /*
5852 * Process all XSLT elements.
5853 */
5854 if (IS_XSLT_ELEM_FAST(cur)) {
5855 /*
5856 * xsl:import is only allowed at the beginning.
5857 */
5858 if (IS_XSLT_NAME(cur, "import")) {
5859 xsltTransformError(NULL, style, cur,
5860 "Misplaced xsl:import element.\n");
5861 style->errors++;
5862 cur = cur->next;
5863 continue;
5864 }
5865 /*
5866 * TODO: Change the return type of the parsing functions
5867 * to int.
5868 */
5869 if (IS_XSLT_NAME(cur, "template")) {
5870 #ifdef WITH_XSLT_DEBUG_PARSING
5871 templates++;
5872 #endif
5873 /*
5874 * TODO: Is the position of xsl:template in the
5875 * tree significant? If not it would be easier to
5876 * parse them at a later stage.
5877 */
5878 xsltParseXSLTTemplate(cctxt, cur);
5879 } else if (IS_XSLT_NAME(cur, "variable")) {
5880 /* NOP; done already */
5881 } else if (IS_XSLT_NAME(cur, "param")) {
5882 /* NOP; done already */
5883 } else if (IS_XSLT_NAME(cur, "include")) {
5884 if (cur->psvi != NULL)
5885 xsltParseXSLTStylesheetElemCore(cctxt, cur);
5886 else {
5887 xsltTransformError(NULL, style, cur,
5888 "Internal error: "
5889 "(xsltParseXSLTStylesheetElemCore) "
5890 "The xsl:include element was not compiled.\n");
5891 style->errors++;
5892 }
5893 } else if (IS_XSLT_NAME(cur, "strip-space")) {
5894 /* No node info needed. */
5895 xsltParseStylesheetStripSpace(style, cur);
5896 } else if (IS_XSLT_NAME(cur, "preserve-space")) {
5897 /* No node info needed. */
5898 xsltParseStylesheetPreserveSpace(style, cur);
5899 } else if (IS_XSLT_NAME(cur, "output")) {
5900 /* No node-info needed. */
5901 xsltParseStylesheetOutput(style, cur);
5902 } else if (IS_XSLT_NAME(cur, "key")) {
5903 /* TODO: node-info needed for expressions ? */
5904 xsltParseStylesheetKey(style, cur);
5905 } else if (IS_XSLT_NAME(cur, "decimal-format")) {
5906 /* No node-info needed. */
5907 xsltParseStylesheetDecimalFormat(style, cur);
5908 } else if (IS_XSLT_NAME(cur, "attribute-set")) {
5909 xsltParseTopLevelXSLTElem(cctxt, cur,
5910 XSLT_FUNC_ATTRSET);
5911 } else if (IS_XSLT_NAME(cur, "namespace-alias")) {
5912 /* NOP; done already */
5913 } else {
5914 if (cctxt->inode->forwardsCompat) {
5915 /*
5916 * Forwards-compatible mode:
5917 *
5918 * XSLT-1: "if it is a top-level element and
5919 * XSLT 1.0 does not allow such elements as top-level
5920 * elements, then the element must be ignored along
5921 * with its content;"
5922 */
5923 /*
5924 * TODO: I don't think we should generate a warning.
5925 */
5926 xsltTransformError(NULL, style, cur,
5927 "Forwards-compatible mode: Ignoring unknown XSLT "
5928 "element '%s'.\n", cur->name);
5929 style->warnings++;
5930 } else {
5931 xsltTransformError(NULL, style, cur,
5932 "Unknown XSLT element '%s'.\n", cur->name);
5933 style->errors++;
5934 }
5935 }
5936 } else {
5937 xsltTopLevelFunction function;
5938
5939 /*
5940 * Process non-XSLT elements, which are in a
5941 * non-NULL namespace.
5942 */
5943 /*
5944 * QUESTION: What does xsltExtModuleTopLevelLookup()
5945 * do exactly?
5946 */
5947 function = xsltExtModuleTopLevelLookup(cur->name,
5948 cur->ns->href);
5949 if (function != NULL)
5950 function(style, cur);
5951 #ifdef WITH_XSLT_DEBUG_PARSING
5952 xsltGenericDebug(xsltGenericDebugContext,
5953 "xsltParseXSLTStylesheetElemCore : User-defined "
5954 "data element '%s'.\n", cur->name);
5955 #endif
5956 }
5957 }
5958 cur = cur->next;
5959 }
5960
5961 exit:
5962
5963 #ifdef WITH_XSLT_DEBUG_PARSING
5964 xsltGenericDebug(xsltGenericDebugContext,
5965 "### END of parsing top-level elements of doc '%s'.\n",
5966 node->doc->URL);
5967 xsltGenericDebug(xsltGenericDebugContext,
5968 "### Templates: %d\n", templates);
5969 #ifdef XSLT_REFACTORED
5970 xsltGenericDebug(xsltGenericDebugContext,
5971 "### Max inodes: %d\n", cctxt->maxNodeInfos);
5972 xsltGenericDebug(xsltGenericDebugContext,
5973 "### Max LREs : %d\n", cctxt->maxLREs);
5974 #endif /* XSLT_REFACTORED */
5975 #endif /* WITH_XSLT_DEBUG_PARSING */
5976
5977 xsltCompilerNodePop(cctxt, node);
5978 return(0);
5979 }
5980
5981 /**
5982 * xsltParseXSLTStylesheet:
5983 * @cctxt: the compiler context
5984 * @node: the xsl:stylesheet/xsl:transform element-node
5985 *
5986 * Parses the xsl:stylesheet and xsl:transform element.
5987 *
5988 * <xsl:stylesheet
5989 * id = id
5990 * extension-element-prefixes = tokens
5991 * exclude-result-prefixes = tokens
5992 * version = number>
5993 * <!-- Content: (xsl:import*, top-level-elements) -->
5994 * </xsl:stylesheet>
5995 *
5996 * BIG TODO: The xsl:include stuff.
5997 *
5998 * Called by xsltParseStylesheetTree()
5999 *
6000 * Returns 0 on success, a positive result on errors and
6001 * -1 on API or internal errors.
6002 */
6003 static int
6004 xsltParseXSLTStylesheetElem(xsltCompilerCtxtPtr cctxt, xmlNodePtr node)
6005 {
6006 xmlNodePtr cur, start;
6007
6008 if ((cctxt == NULL) || (node == NULL) || (node->type != XML_ELEMENT_NODE))
6009 return(-1);
6010
6011 if (node->children == NULL)
6012 goto exit;
6013
6014 /*
6015 * Process top-level elements:
6016 * xsl:import (must be first)
6017 * xsl:include (this is just a pre-processing)
6018 */
6019 cur = node->children;
6020 /*
6021 * Process xsl:import elements.
6022 * XSLT 1.0: "The xsl:import element children must precede all
6023 * other element children of an xsl:stylesheet element,
6024 * including any xsl:include element children."
6025 */
6026 while ((cur != NULL) &&
6027 xsltParseFindTopLevelElem(cctxt, cur,
6028 BAD_CAST "import", XSLT_NAMESPACE, 1, &cur) == 1)
6029 {
6030 if (xsltParseStylesheetImport(cctxt->style, cur) != 0) {
6031 cctxt->style->errors++;
6032 }
6033 cur = cur->next;
6034 }
6035 if (cur == NULL)
6036 goto exit;
6037 start = cur;
6038 /*
6039 * Pre-process all xsl:include elements.
6040 */
6041 cur = start;
6042 while ((cur != NULL) &&
6043 xsltParseFindTopLevelElem(cctxt, cur,
6044 BAD_CAST "include", XSLT_NAMESPACE, 0, &cur) == 1)
6045 {
6046 xsltParseTopLevelXSLTElem(cctxt, cur, XSLT_FUNC_INCLUDE);
6047 cur = cur->next;
6048 }
6049 /*
6050 * Pre-process all xsl:namespace-alias elements.
6051 * URGENT TODO: This won't work correctly: the order of included
6052 * aliases and aliases defined here is significant.
6053 */
6054 cur = start;
6055 while ((cur != NULL) &&
6056 xsltParseFindTopLevelElem(cctxt, cur,
6057 BAD_CAST "namespace-alias", XSLT_NAMESPACE, 0, &cur) == 1)
6058 {
6059 xsltNamespaceAlias(cctxt->style, cur);
6060 cur = cur->next;
6061 }
6062
6063 if (cctxt->isInclude) {
6064 /*
6065 * If this stylesheet is intended for inclusion, then
6066 * we will process only imports and includes.
6067 */
6068 goto exit;
6069 }
6070 /*
6071 * Now parse the rest of the top-level elements.
6072 */
6073 xsltParseXSLTStylesheetElemCore(cctxt, node);
6074 exit:
6075
6076 return(0);
6077 }
6078
6079 #else /* XSLT_REFACTORED */
6080
6081 /**
6082 * xsltParseStylesheetTop:
6083 * @style: the XSLT stylesheet
6084 * @top: the top level "stylesheet" or "transform" element
6085 *
6086 * scan the top level elements of an XSL stylesheet
6087 */
6088 static void
6089 xsltParseStylesheetTop(xsltStylesheetPtr style, xmlNodePtr top) {
6090 xmlNodePtr cur;
6091 xmlChar *prop;
6092 #ifdef WITH_XSLT_DEBUG_PARSING
6093 int templates = 0;
6094 #endif
6095
6096 if ((top == NULL) || (top->type != XML_ELEMENT_NODE))
6097 return;
6098
6099 prop = xmlGetNsProp(top, (const xmlChar *)"version", NULL);
6100 if (prop == NULL) {
6101 xsltTransformError(NULL, style, top,
6102 "xsl:version is missing: document may not be a stylesheet\n");
6103 if (style != NULL) style->warnings++;
6104 } else {
6105 if ((!xmlStrEqual(prop, (const xmlChar *)"1.0")) &&
6106 (!xmlStrEqual(prop, (const xmlChar *)"1.1"))) {
6107 xsltTransformError(NULL, style, top,
6108 "xsl:version: only 1.1 features are supported\n");
6109 if (style != NULL) {
6110 style->forwards_compatible = 1;
6111 style->warnings++;
6112 }
6113 }
6114 xmlFree(prop);
6115 }
6116
6117 /*
6118 * process xsl:import elements
6119 */
6120 cur = top->children;
6121 while (cur != NULL) {
6122 if (IS_BLANK_NODE(cur)) {
6123 cur = cur->next;
6124 continue;
6125 }
6126 if (IS_XSLT_ELEM(cur) && IS_XSLT_NAME(cur, "import")) {
6127 if (xsltParseStylesheetImport(style, cur) != 0)
6128 if (style != NULL) style->errors++;
6129 } else
6130 break;
6131 cur = cur->next;
6132 }
6133
6134 /*
6135 * process other top-level elements
6136 */
6137 while (cur != NULL) {
6138 if (IS_BLANK_NODE(cur)) {
6139 cur = cur->next;
6140 continue;
6141 }
6142 if (cur->type == XML_TEXT_NODE) {
6143 if (cur->content != NULL) {
6144 xsltTransformError(NULL, style, cur,
6145 "misplaced text node: '%s'\n", cur->content);
6146 }
6147 if (style != NULL) style->errors++;
6148 cur = cur->next;
6149 continue;
6150 }
6151 if ((cur->type == XML_ELEMENT_NODE) && (cur->ns == NULL)) {
6152 xsltGenericError(xsltGenericErrorContext,
6153 "Found a top-level element %s with null namespace URI\n",
6154 cur->name);
6155 if (style != NULL) style->errors++;
6156 cur = cur->next;
6157 continue;
6158 }
6159 if ((cur->type == XML_ELEMENT_NODE) && (!(IS_XSLT_ELEM(cur)))) {
6160 xsltTopLevelFunction function;
6161
6162 function = xsltExtModuleTopLevelLookup(cur->name,
6163 cur->ns->href);
6164 if (function != NULL)
6165 function(style, cur);
6166
6167 #ifdef WITH_XSLT_DEBUG_PARSING
6168 xsltGenericDebug(xsltGenericDebugContext,
6169 "xsltParseStylesheetTop : found foreign element %s\n",
6170 cur->name);
6171 #endif
6172 cur = cur->next;
6173 continue;
6174 }
6175 if (IS_XSLT_NAME(cur, "import")) {
6176 xsltTransformError(NULL, style, cur,
6177 "xsltParseStylesheetTop: ignoring misplaced import eleme nt\n");
6178 if (style != NULL) style->errors++;
6179 } else if (IS_XSLT_NAME(cur, "include")) {
6180 if (xsltParseStylesheetInclude(style, cur) != 0)
6181 if (style != NULL) style->errors++;
6182 } else if (IS_XSLT_NAME(cur, "strip-space")) {
6183 xsltParseStylesheetStripSpace(style, cur);
6184 } else if (IS_XSLT_NAME(cur, "preserve-space")) {
6185 xsltParseStylesheetPreserveSpace(style, cur);
6186 } else if (IS_XSLT_NAME(cur, "output")) {
6187 xsltParseStylesheetOutput(style, cur);
6188 } else if (IS_XSLT_NAME(cur, "key")) {
6189 xsltParseStylesheetKey(style, cur);
6190 } else if (IS_XSLT_NAME(cur, "decimal-format")) {
6191 xsltParseStylesheetDecimalFormat(style, cur);
6192 } else if (IS_XSLT_NAME(cur, "attribute-set")) {
6193 xsltParseStylesheetAttributeSet(style, cur);
6194 } else if (IS_XSLT_NAME(cur, "variable")) {
6195 xsltParseGlobalVariable(style, cur);
6196 } else if (IS_XSLT_NAME(cur, "param")) {
6197 xsltParseGlobalParam(style, cur);
6198 } else if (IS_XSLT_NAME(cur, "template")) {
6199 #ifdef WITH_XSLT_DEBUG_PARSING
6200 templates++;
6201 #endif
6202 xsltParseStylesheetTemplate(style, cur);
6203 } else if (IS_XSLT_NAME(cur, "namespace-alias")) {
6204 xsltNamespaceAlias(style, cur);
6205 } else {
6206 if ((style != NULL) && (style->forwards_compatible == 0)) {
6207 xsltTransformError(NULL, style, cur,
6208 "xsltParseStylesheetTop: unknown %s element\n",
6209 cur->name);
6210 if (style != NULL) style->errors++;
6211 }
6212 }
6213 cur = cur->next;
6214 }
6215 #ifdef WITH_XSLT_DEBUG_PARSING
6216 xsltGenericDebug(xsltGenericDebugContext,
6217 "parsed %d templates\n", templates);
6218 #endif
6219 }
6220
6221 #endif /* else of XSLT_REFACTORED */
6222
6223 #ifdef XSLT_REFACTORED
6224 /**
6225 * xsltParseSimplifiedStylesheetTree:
6226 *
6227 * @style: the stylesheet (TODO: Change this to the compiler context)
6228 * @doc: the document containing the stylesheet.
6229 * @node: the node where the stylesheet is rooted at
6230 *
6231 * Returns 0 in case of success, a positive result if an error occurred
6232 * and -1 on API and internal errors.
6233 */
6234 static int
6235 xsltParseSimplifiedStylesheetTree(xsltCompilerCtxtPtr cctxt,
6236 xmlDocPtr doc,
6237 xmlNodePtr node)
6238 {
6239 xsltTemplatePtr templ;
6240
6241 if ((cctxt == NULL) || (node == NULL))
6242 return(-1);
6243
6244 if (xsltParseAttrXSLTVersion(cctxt, node, 0) == XSLT_ELEMENT_CATEGORY_LRE)
6245 {
6246 /*
6247 * TODO: Adjust report, since this might be an
6248 * embedded stylesheet.
6249 */
6250 xsltTransformError(NULL, cctxt->style, node,
6251 "The attribute 'xsl:version' is missing; cannot identify "
6252 "this document as an XSLT stylesheet document.\n");
6253 cctxt->style->errors++;
6254 return(1);
6255 }
6256
6257 #ifdef WITH_XSLT_DEBUG_PARSING
6258 xsltGenericDebug(xsltGenericDebugContext,
6259 "xsltParseSimplifiedStylesheetTree: document is stylesheet\n");
6260 #endif
6261
6262 /*
6263 * Create and link the template
6264 */
6265 templ = xsltNewTemplate();
6266 if (templ == NULL) {
6267 return(-1);
6268 }
6269 templ->next = cctxt->style->templates;
6270 cctxt->style->templates = templ;
6271 templ->match = xmlStrdup(BAD_CAST "/");
6272
6273 /*
6274 * Note that we push the document-node in this special case.
6275 */
6276 xsltCompilerNodePush(cctxt, (xmlNodePtr) doc);
6277 /*
6278 * In every case, we need to have
6279 * the in-scope namespaces of the element, where the
6280 * stylesheet is rooted at, regardless if it's an XSLT
6281 * instruction or a literal result instruction (or if
6282 * this is an embedded stylesheet).
6283 */
6284 cctxt->inode->inScopeNs =
6285 xsltCompilerBuildInScopeNsList(cctxt, node);
6286 /*
6287 * Parse the content and register the match-pattern.
6288 */
6289 xsltParseSequenceConstructor(cctxt, node);
6290 xsltCompilerNodePop(cctxt, (xmlNodePtr) doc);
6291
6292 templ->elem = (xmlNodePtr) doc;
6293 templ->content = node;
6294 xsltAddTemplate(cctxt->style, templ, NULL, NULL);
6295 cctxt->style->literal_result = 1;
6296 return(0);
6297 }
6298
6299 #ifdef XSLT_REFACTORED_XSLT_NSCOMP
6300 /**
6301 * xsltRestoreDocumentNamespaces:
6302 * @ns: map of namespaces
6303 * @doc: the document
6304 *
6305 * Restore the namespaces for the document
6306 *
6307 * Returns 0 in case of success, -1 in case of failure
6308 */
6309 int
6310 xsltRestoreDocumentNamespaces(xsltNsMapPtr ns, xmlDocPtr doc)
6311 {
6312 if (doc == NULL)
6313 return(-1);
6314 /*
6315 * Revert the changes we have applied to the namespace-URIs of
6316 * ns-decls.
6317 */
6318 while (ns != NULL) {
6319 if ((ns->doc == doc) && (ns->ns != NULL)) {
6320 ns->ns->href = ns->origNsName;
6321 ns->origNsName = NULL;
6322 ns->ns = NULL;
6323 }
6324 ns = ns->next;
6325 }
6326 return(0);
6327 }
6328 #endif /* XSLT_REFACTORED_XSLT_NSCOMP */
6329
6330 /**
6331 * xsltParseStylesheetProcess:
6332 * @style: the XSLT stylesheet (the current stylesheet-level)
6333 * @doc: and xmlDoc parsed XML
6334 *
6335 * Parses an XSLT stylesheet, adding the associated structures.
6336 * Called by:
6337 * xsltParseStylesheetImportedDoc() (xslt.c)
6338 * xsltParseStylesheetInclude() (imports.c)
6339 *
6340 * Returns the value of the @style parameter if everything
6341 * went right, NULL if something went amiss.
6342 */
6343 xsltStylesheetPtr
6344 xsltParseStylesheetProcess(xsltStylesheetPtr style, xmlDocPtr doc)
6345 {
6346 xsltCompilerCtxtPtr cctxt;
6347 xmlNodePtr cur;
6348 int oldIsSimplifiedStylesheet;
6349
6350 xsltInitGlobals();
6351
6352 if ((style == NULL) || (doc == NULL))
6353 return(NULL);
6354
6355 cctxt = XSLT_CCTXT(style);
6356
6357 cur = xmlDocGetRootElement(doc);
6358 if (cur == NULL) {
6359 xsltTransformError(NULL, style, (xmlNodePtr) doc,
6360 "xsltParseStylesheetProcess : empty stylesheet\n");
6361 return(NULL);
6362 }
6363 oldIsSimplifiedStylesheet = cctxt->simplified;
6364
6365 if ((IS_XSLT_ELEM(cur)) &&
6366 ((IS_XSLT_NAME(cur, "stylesheet")) ||
6367 (IS_XSLT_NAME(cur, "transform")))) {
6368 #ifdef WITH_XSLT_DEBUG_PARSING
6369 xsltGenericDebug(xsltGenericDebugContext,
6370 "xsltParseStylesheetProcess : found stylesheet\n");
6371 #endif
6372 cctxt->simplified = 0;
6373 style->literal_result = 0;
6374 } else {
6375 cctxt->simplified = 1;
6376 style->literal_result = 1;
6377 }
6378 /*
6379 * Pre-process the stylesheet if not already done before.
6380 * This will remove PIs and comments, merge adjacent
6381 * text nodes, internalize strings, etc.
6382 */
6383 if (! style->nopreproc)
6384 xsltParsePreprocessStylesheetTree(cctxt, cur);
6385 /*
6386 * Parse and compile the stylesheet.
6387 */
6388 if (style->literal_result == 0) {
6389 if (xsltParseXSLTStylesheetElem(cctxt, cur) != 0)
6390 return(NULL);
6391 } else {
6392 if (xsltParseSimplifiedStylesheetTree(cctxt, doc, cur) != 0)
6393 return(NULL);
6394 }
6395
6396 cctxt->simplified = oldIsSimplifiedStylesheet;
6397
6398 return(style);
6399 }
6400
6401 #else /* XSLT_REFACTORED */
6402
6403 /**
6404 * xsltParseStylesheetProcess:
6405 * @ret: the XSLT stylesheet (the current stylesheet-level)
6406 * @doc: and xmlDoc parsed XML
6407 *
6408 * Parses an XSLT stylesheet, adding the associated structures.
6409 * Called by:
6410 * xsltParseStylesheetImportedDoc() (xslt.c)
6411 * xsltParseStylesheetInclude() (imports.c)
6412 *
6413 * Returns the value of the @style parameter if everything
6414 * went right, NULL if something went amiss.
6415 */
6416 xsltStylesheetPtr
6417 xsltParseStylesheetProcess(xsltStylesheetPtr ret, xmlDocPtr doc) {
6418 xmlNodePtr cur;
6419
6420 xsltInitGlobals();
6421
6422 if (doc == NULL)
6423 return(NULL);
6424 if (ret == NULL)
6425 return(ret);
6426
6427 /*
6428 * First steps, remove blank nodes,
6429 * locate the xsl:stylesheet element and the
6430 * namespace declaration.
6431 */
6432 cur = xmlDocGetRootElement(doc);
6433 if (cur == NULL) {
6434 xsltTransformError(NULL, ret, (xmlNodePtr) doc,
6435 "xsltParseStylesheetProcess : empty stylesheet\n");
6436 return(NULL);
6437 }
6438
6439 if ((IS_XSLT_ELEM(cur)) &&
6440 ((IS_XSLT_NAME(cur, "stylesheet")) ||
6441 (IS_XSLT_NAME(cur, "transform")))) {
6442 #ifdef WITH_XSLT_DEBUG_PARSING
6443 xsltGenericDebug(xsltGenericDebugContext,
6444 "xsltParseStylesheetProcess : found stylesheet\n");
6445 #endif
6446 ret->literal_result = 0;
6447 xsltParseStylesheetExcludePrefix(ret, cur, 1);
6448 xsltParseStylesheetExtPrefix(ret, cur, 1);
6449 } else {
6450 xsltParseStylesheetExcludePrefix(ret, cur, 0);
6451 xsltParseStylesheetExtPrefix(ret, cur, 0);
6452 ret->literal_result = 1;
6453 }
6454 if (!ret->nopreproc) {
6455 xsltPreprocessStylesheet(ret, cur);
6456 }
6457 if (ret->literal_result == 0) {
6458 xsltParseStylesheetTop(ret, cur);
6459 } else {
6460 xmlChar *prop;
6461 xsltTemplatePtr template;
6462
6463 /*
6464 * the document itself might be the template, check xsl:version
6465 */
6466 prop = xmlGetNsProp(cur, (const xmlChar *)"version", XSLT_NAMESPACE);
6467 if (prop == NULL) {
6468 xsltTransformError(NULL, ret, cur,
6469 "xsltParseStylesheetProcess : document is not a stylesheet\n");
6470 return(NULL);
6471 }
6472
6473 #ifdef WITH_XSLT_DEBUG_PARSING
6474 xsltGenericDebug(xsltGenericDebugContext,
6475 "xsltParseStylesheetProcess : document is stylesheet\n");
6476 #endif
6477
6478 if ((!xmlStrEqual(prop, (const xmlChar *)"1.0")) &&
6479 (!xmlStrEqual(prop, (const xmlChar *)"1.1"))) {
6480 xsltTransformError(NULL, ret, cur,
6481 "xsl:version: only 1.1 features are supported\n");
6482 ret->forwards_compatible = 1;
6483 ret->warnings++;
6484 }
6485 xmlFree(prop);
6486
6487 /*
6488 * Create and link the template
6489 */
6490 template = xsltNewTemplate();
6491 if (template == NULL) {
6492 return(NULL);
6493 }
6494 template->next = ret->templates;
6495 ret->templates = template;
6496 template->match = xmlStrdup((const xmlChar *)"/");
6497
6498 /*
6499 * parse the content and register the pattern
6500 */
6501 xsltParseTemplateContent(ret, (xmlNodePtr) doc);
6502 template->elem = (xmlNodePtr) doc;
6503 template->content = doc->children;
6504 xsltAddTemplate(ret, template, NULL, NULL);
6505 ret->literal_result = 1;
6506 }
6507
6508 return(ret);
6509 }
6510
6511 #endif /* else of XSLT_REFACTORED */
6512
6513 /**
6514 * xsltParseStylesheetImportedDoc:
6515 * @doc: an xmlDoc parsed XML
6516 * @parentStyle: pointer to the parent stylesheet (if it exists)
6517 *
6518 * parse an XSLT stylesheet building the associated structures
6519 * except the processing not needed for imported documents.
6520 *
6521 * Returns a new XSLT stylesheet structure.
6522 */
6523
6524 xsltStylesheetPtr
6525 xsltParseStylesheetImportedDoc(xmlDocPtr doc,
6526 xsltStylesheetPtr parentStyle) {
6527 xsltStylesheetPtr retStyle;
6528
6529 if (doc == NULL)
6530 return(NULL);
6531
6532 retStyle = xsltNewStylesheet();
6533 if (retStyle == NULL)
6534 return(NULL);
6535 /*
6536 * Set the importing stylesheet module; also used to detect recursion.
6537 */
6538 retStyle->parent = parentStyle;
6539 /*
6540 * Adjust the string dict.
6541 */
6542 if (doc->dict != NULL) {
6543 xmlDictFree(retStyle->dict);
6544 retStyle->dict = doc->dict;
6545 #ifdef WITH_XSLT_DEBUG
6546 xsltGenericDebug(xsltGenericDebugContext,
6547 "reusing dictionary from %s for stylesheet\n",
6548 doc->URL);
6549 #endif
6550 xmlDictReference(retStyle->dict);
6551 }
6552
6553 /*
6554 * TODO: Eliminate xsltGatherNamespaces(); we must not restrict
6555 * the stylesheet to containt distinct namespace prefixes.
6556 */
6557 xsltGatherNamespaces(retStyle);
6558
6559 #ifdef XSLT_REFACTORED
6560 {
6561 xsltCompilerCtxtPtr cctxt;
6562 xsltStylesheetPtr oldCurSheet;
6563
6564 if (parentStyle == NULL) {
6565 xsltPrincipalStylesheetDataPtr principalData;
6566 /*
6567 * Principal stylesheet
6568 * --------------------
6569 */
6570 retStyle->principal = retStyle;
6571 /*
6572 * Create extra data for the principal stylesheet.
6573 */
6574 principalData = xsltNewPrincipalStylesheetData();
6575 if (principalData == NULL) {
6576 xsltFreeStylesheet(retStyle);
6577 return(NULL);
6578 }
6579 retStyle->principalData = principalData;
6580 /*
6581 * Create the compilation context
6582 * ------------------------------
6583 * (only once; for the principal stylesheet).
6584 * This is currently the only function where the
6585 * compilation context is created.
6586 */
6587 cctxt = xsltCompilationCtxtCreate(retStyle);
6588 if (cctxt == NULL) {
6589 xsltFreeStylesheet(retStyle);
6590 return(NULL);
6591 }
6592 retStyle->compCtxt = (void *) cctxt;
6593 cctxt->style = retStyle;
6594 cctxt->dict = retStyle->dict;
6595 cctxt->psData = principalData;
6596 /*
6597 * Push initial dummy node info.
6598 */
6599 cctxt->depth = -1;
6600 xsltCompilerNodePush(cctxt, (xmlNodePtr) doc);
6601 } else {
6602 /*
6603 * Imported stylesheet.
6604 */
6605 retStyle->principal = parentStyle->principal;
6606 cctxt = parentStyle->compCtxt;
6607 retStyle->compCtxt = cctxt;
6608 }
6609 /*
6610 * Save the old and set the current stylesheet structure in the
6611 * compilation context.
6612 */
6613 oldCurSheet = cctxt->style;
6614 cctxt->style = retStyle;
6615
6616 retStyle->doc = doc;
6617 xsltParseStylesheetProcess(retStyle, doc);
6618
6619 cctxt->style = oldCurSheet;
6620 if (parentStyle == NULL) {
6621 /*
6622 * Pop the initial dummy node info.
6623 */
6624 xsltCompilerNodePop(cctxt, (xmlNodePtr) doc);
6625 } else {
6626 /*
6627 * Clear the compilation context of imported
6628 * stylesheets.
6629 * TODO: really?
6630 */
6631 /* retStyle->compCtxt = NULL; */
6632 }
6633 /*
6634 * Free the stylesheet if there were errors.
6635 */
6636 if (retStyle != NULL) {
6637 if (retStyle->errors != 0) {
6638 #ifdef XSLT_REFACTORED_XSLT_NSCOMP
6639 /*
6640 * Restore all changes made to namespace URIs of ns-decls.
6641 */
6642 if (cctxt->psData->nsMap)
6643 xsltRestoreDocumentNamespaces(cctxt->psData->nsMap, doc);
6644 #endif
6645 /*
6646 * Detach the doc from the stylesheet; otherwise the doc
6647 * will be freed in xsltFreeStylesheet().
6648 */
6649 retStyle->doc = NULL;
6650 /*
6651 * Cleanup the doc if its the main stylesheet.
6652 */
6653 if (parentStyle == NULL) {
6654 xsltCleanupStylesheetTree(doc, xmlDocGetRootElement(doc));
6655 if (retStyle->compCtxt != NULL) {
6656 xsltCompilationCtxtFree(retStyle->compCtxt);
6657 retStyle->compCtxt = NULL;
6658 }
6659 }
6660
6661 xsltFreeStylesheet(retStyle);
6662 retStyle = NULL;
6663 }
6664 }
6665 }
6666
6667 #else /* XSLT_REFACTORED */
6668 /*
6669 * Old behaviour.
6670 */
6671 retStyle->doc = doc;
6672 if (xsltParseStylesheetProcess(retStyle, doc) == NULL) {
6673 retStyle->doc = NULL;
6674 xsltFreeStylesheet(retStyle);
6675 retStyle = NULL;
6676 }
6677 if (retStyle != NULL) {
6678 if (retStyle->errors != 0) {
6679 retStyle->doc = NULL;
6680 if (parentStyle == NULL)
6681 xsltCleanupStylesheetTree(doc,
6682 xmlDocGetRootElement(doc));
6683 xsltFreeStylesheet(retStyle);
6684 retStyle = NULL;
6685 }
6686 }
6687 #endif /* else of XSLT_REFACTORED */
6688
6689 return(retStyle);
6690 }
6691
6692 /**
6693 * xsltParseStylesheetDoc:
6694 * @doc: and xmlDoc parsed XML
6695 *
6696 * parse an XSLT stylesheet, building the associated structures. doc
6697 * is kept as a reference within the returned stylesheet, so changes
6698 * to doc after the parsing will be reflected when the stylesheet
6699 * is applied, and the doc is automatically freed when the
6700 * stylesheet is closed.
6701 *
6702 * Returns a new XSLT stylesheet structure.
6703 */
6704
6705 xsltStylesheetPtr
6706 xsltParseStylesheetDoc(xmlDocPtr doc) {
6707 xsltStylesheetPtr ret;
6708
6709 xsltInitGlobals();
6710
6711 ret = xsltParseStylesheetImportedDoc(doc, NULL);
6712 if (ret == NULL)
6713 return(NULL);
6714
6715 xsltResolveStylesheetAttributeSet(ret);
6716 #ifdef XSLT_REFACTORED
6717 /*
6718 * Free the compilation context.
6719 * TODO: Check if it's better to move this cleanup to
6720 * xsltParseStylesheetImportedDoc().
6721 */
6722 if (ret->compCtxt != NULL) {
6723 xsltCompilationCtxtFree(XSLT_CCTXT(ret));
6724 ret->compCtxt = NULL;
6725 }
6726 #endif
6727 return(ret);
6728 }
6729
6730 /**
6731 * xsltParseStylesheetFile:
6732 * @filename: the filename/URL to the stylesheet
6733 *
6734 * Load and parse an XSLT stylesheet
6735 *
6736 * Returns a new XSLT stylesheet structure.
6737 */
6738
6739 xsltStylesheetPtr
6740 xsltParseStylesheetFile(const xmlChar* filename) {
6741 xsltSecurityPrefsPtr sec;
6742 xsltStylesheetPtr ret;
6743 xmlDocPtr doc;
6744
6745 xsltInitGlobals();
6746
6747 if (filename == NULL)
6748 return(NULL);
6749
6750 #ifdef WITH_XSLT_DEBUG_PARSING
6751 xsltGenericDebug(xsltGenericDebugContext,
6752 "xsltParseStylesheetFile : parse %s\n", filename);
6753 #endif
6754
6755 /*
6756 * Security framework check
6757 */
6758 sec = xsltGetDefaultSecurityPrefs();
6759 if (sec != NULL) {
6760 int res;
6761
6762 res = xsltCheckRead(sec, NULL, filename);
6763 if (res == 0) {
6764 xsltTransformError(NULL, NULL, NULL,
6765 "xsltParseStylesheetFile: read rights for %s denied\n",
6766 filename);
6767 return(NULL);
6768 }
6769 }
6770
6771 doc = xsltDocDefaultLoader(filename, NULL, XSLT_PARSE_OPTIONS,
6772 NULL, XSLT_LOAD_START);
6773 if (doc == NULL) {
6774 xsltTransformError(NULL, NULL, NULL,
6775 "xsltParseStylesheetFile : cannot parse %s\n", filename);
6776 return(NULL);
6777 }
6778 ret = xsltParseStylesheetDoc(doc);
6779 if (ret == NULL) {
6780 xmlFreeDoc(doc);
6781 return(NULL);
6782 }
6783
6784 return(ret);
6785 }
6786
6787 /************************************************************************
6788 * *
6789 * Handling of Stylesheet PI *
6790 * *
6791 ************************************************************************/
6792
6793 #define CUR (*cur)
6794 #define SKIP(val) cur += (val)
6795 #define NXT(val) cur[(val)]
6796 #define SKIP_BLANKS \
6797 while (IS_BLANK(CUR)) NEXT
6798 #define NEXT ((*cur) ? cur++ : cur)
6799
6800 /**
6801 * xsltParseStylesheetPI:
6802 * @value: the value of the PI
6803 *
6804 * This function checks that the type is text/xml and extracts
6805 * the URI-Reference for the stylesheet
6806 *
6807 * Returns the URI-Reference for the stylesheet or NULL (it need to
6808 * be freed by the caller)
6809 */
6810 static xmlChar *
6811 xsltParseStylesheetPI(const xmlChar *value) {
6812 const xmlChar *cur;
6813 const xmlChar *start;
6814 xmlChar *val;
6815 xmlChar tmp;
6816 xmlChar *href = NULL;
6817 int isXml = 0;
6818
6819 if (value == NULL)
6820 return(NULL);
6821
6822 cur = value;
6823 while (CUR != 0) {
6824 SKIP_BLANKS;
6825 if ((CUR == 't') && (NXT(1) == 'y') && (NXT(2) == 'p') &&
6826 (NXT(3) == 'e')) {
6827 SKIP(4);
6828 SKIP_BLANKS;
6829 if (CUR != '=')
6830 continue;
6831 NEXT;
6832 if ((CUR != '\'') && (CUR != '"'))
6833 continue;
6834 tmp = CUR;
6835 NEXT;
6836 start = cur;
6837 while ((CUR != 0) && (CUR != tmp))
6838 NEXT;
6839 if (CUR != tmp)
6840 continue;
6841 val = xmlStrndup(start, cur - start);
6842 NEXT;
6843 if (val == NULL)
6844 return(NULL);
6845 if ((xmlStrcasecmp(val, BAD_CAST "text/xml")) &&
6846 (xmlStrcasecmp(val, BAD_CAST "text/xsl"))) {
6847 xmlFree(val);
6848 break;
6849 }
6850 isXml = 1;
6851 xmlFree(val);
6852 } else if ((CUR == 'h') && (NXT(1) == 'r') && (NXT(2) == 'e') &&
6853 (NXT(3) == 'f')) {
6854 SKIP(4);
6855 SKIP_BLANKS;
6856 if (CUR != '=')
6857 continue;
6858 NEXT;
6859 if ((CUR != '\'') && (CUR != '"'))
6860 continue;
6861 tmp = CUR;
6862 NEXT;
6863 start = cur;
6864 while ((CUR != 0) && (CUR != tmp))
6865 NEXT;
6866 if (CUR != tmp)
6867 continue;
6868 if (href == NULL)
6869 href = xmlStrndup(start, cur - start);
6870 NEXT;
6871 } else {
6872 while ((CUR != 0) && (!IS_BLANK(CUR)))
6873 NEXT;
6874 }
6875
6876 }
6877
6878 if (!isXml) {
6879 if (href != NULL)
6880 xmlFree(href);
6881 href = NULL;
6882 }
6883 return(href);
6884 }
6885
6886 /**
6887 * xsltLoadStylesheetPI:
6888 * @doc: a document to process
6889 *
6890 * This function tries to locate the stylesheet PI in the given document
6891 * If found, and if contained within the document, it will extract
6892 * that subtree to build the stylesheet to process @doc (doc itself will
6893 * be modified). If found but referencing an external document it will
6894 * attempt to load it and generate a stylesheet from it. In both cases,
6895 * the resulting stylesheet and the document need to be freed once the
6896 * transformation is done.
6897 *
6898 * Returns a new XSLT stylesheet structure or NULL if not found.
6899 */
6900 xsltStylesheetPtr
6901 xsltLoadStylesheetPI(xmlDocPtr doc) {
6902 xmlNodePtr child;
6903 xsltStylesheetPtr ret = NULL;
6904 xmlChar *href = NULL;
6905 xmlURIPtr URI;
6906
6907 xsltInitGlobals();
6908
6909 if (doc == NULL)
6910 return(NULL);
6911
6912 /*
6913 * Find the text/xml stylesheet PI id any before the root
6914 */
6915 child = doc->children;
6916 while ((child != NULL) && (child->type != XML_ELEMENT_NODE)) {
6917 if ((child->type == XML_PI_NODE) &&
6918 (xmlStrEqual(child->name, BAD_CAST "xml-stylesheet"))) {
6919 href = xsltParseStylesheetPI(child->content);
6920 if (href != NULL)
6921 break;
6922 }
6923 child = child->next;
6924 }
6925
6926 /*
6927 * If found check the href to select processing
6928 */
6929 if (href != NULL) {
6930 #ifdef WITH_XSLT_DEBUG_PARSING
6931 xsltGenericDebug(xsltGenericDebugContext,
6932 "xsltLoadStylesheetPI : found PI href=%s\n", href);
6933 #endif
6934 URI = xmlParseURI((const char *) href);
6935 if (URI == NULL) {
6936 xsltTransformError(NULL, NULL, child,
6937 "xml-stylesheet : href %s is not valid\n", href);
6938 xmlFree(href);
6939 return(NULL);
6940 }
6941 if ((URI->fragment != NULL) && (URI->scheme == NULL) &&
6942 (URI->opaque == NULL) && (URI->authority == NULL) &&
6943 (URI->server == NULL) && (URI->user == NULL) &&
6944 (URI->path == NULL) && (URI->query == NULL)) {
6945 xmlAttrPtr ID;
6946
6947 #ifdef WITH_XSLT_DEBUG_PARSING
6948 xsltGenericDebug(xsltGenericDebugContext,
6949 "xsltLoadStylesheetPI : Reference to ID %s\n", href);
6950 #endif
6951 if (URI->fragment[0] == '#')
6952 ID = xmlGetID(doc, (const xmlChar *) &(URI->fragment[1]));
6953 else
6954 ID = xmlGetID(doc, (const xmlChar *) URI->fragment);
6955 if (ID == NULL) {
6956 xsltTransformError(NULL, NULL, child,
6957 "xml-stylesheet : no ID %s found\n", URI->fragment);
6958 } else {
6959 xmlDocPtr fake;
6960 xmlNodePtr subtree, newtree;
6961 xmlNsPtr ns;
6962
6963 #ifdef WITH_XSLT_DEBUG
6964 xsltGenericDebug(xsltGenericDebugContext,
6965 "creating new document from %s for embedded stylesheet\n",
6966 doc->URL);
6967 #endif
6968 /*
6969 * move the subtree in a new document passed to
6970 * the stylesheet analyzer
6971 */
6972 subtree = ID->parent;
6973 fake = xmlNewDoc(NULL);
6974 if (fake != NULL) {
6975 /*
6976 * Should the dictionary still be shared even though
6977 * the nodes are being copied rather than moved?
6978 */
6979 fake->dict = doc->dict;
6980 xmlDictReference(doc->dict);
6981 #ifdef WITH_XSLT_DEBUG
6982 xsltGenericDebug(xsltGenericDebugContext,
6983 "reusing dictionary from %s for embedded stylesheet\n",
6984 doc->URL);
6985 #endif
6986
6987 newtree = xmlDocCopyNode(subtree, fake, 1);
6988
6989 fake->URL = xmlNodeGetBase(doc, subtree->parent);
6990 #ifdef WITH_XSLT_DEBUG
6991 xsltGenericDebug(xsltGenericDebugContext,
6992 "set base URI for embedded stylesheet as %s\n",
6993 fake->URL);
6994 #endif
6995
6996 /*
6997 * Add all namespaces in scope of embedded stylesheet to
6998 * root element of newly created stylesheet document
6999 */
7000 while ((subtree = subtree->parent) != (xmlNodePtr)doc) {
7001 for (ns = subtree->ns; ns; ns = ns->next) {
7002 xmlNewNs(newtree, ns->href, ns->prefix);
7003 }
7004 }
7005
7006 xmlAddChild((xmlNodePtr)fake, newtree);
7007 ret = xsltParseStylesheetDoc(fake);
7008 if (ret == NULL)
7009 xmlFreeDoc(fake);
7010 }
7011 }
7012 } else {
7013 xmlChar *URL, *base;
7014
7015 /*
7016 * Reference to an external stylesheet
7017 */
7018
7019 base = xmlNodeGetBase(doc, (xmlNodePtr) doc);
7020 URL = xmlBuildURI(href, base);
7021 if (URL != NULL) {
7022 #ifdef WITH_XSLT_DEBUG_PARSING
7023 xsltGenericDebug(xsltGenericDebugContext,
7024 "xsltLoadStylesheetPI : fetching %s\n", URL);
7025 #endif
7026 ret = xsltParseStylesheetFile(URL);
7027 xmlFree(URL);
7028 } else {
7029 #ifdef WITH_XSLT_DEBUG_PARSING
7030 xsltGenericDebug(xsltGenericDebugContext,
7031 "xsltLoadStylesheetPI : fetching %s\n", href);
7032 #endif
7033 ret = xsltParseStylesheetFile(href);
7034 }
7035 if (base != NULL)
7036 xmlFree(base);
7037 }
7038 xmlFreeURI(URI);
7039 xmlFree(href);
7040 }
7041 return(ret);
7042 }
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