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chromium / chromium / src / 96dbafe288dbe2f0cc45fa3c39daf6d0c37acbab / . / third_party / libxslt / libxslt / xslt.c
blob: bca91ee76606eba19412da5e118080ff774f77d0 [file] [log] [blame]
/*
* xslt.c: Implemetation of an XSL Transformation 1.0 engine
*
* Reference:
* XSLT specification
* http://www.w3.org/TR/1999/REC-xslt-19991116
*
* Associating Style Sheets with XML documents
* http://www.w3.org/1999/06/REC-xml-stylesheet-19990629
*
* See Copyright for the status of this software.
*
* daniel@veillard.com
*/
#define IN_LIBXSLT
#include "libxslt.h"
#include <string.h>
#include <libxml/xmlmemory.h>
#include <libxml/parser.h>
#include <libxml/tree.h>
#include <libxml/valid.h>
#include <libxml/hash.h>
#include <libxml/uri.h>
#include <libxml/xmlerror.h>
#include <libxml/parserInternals.h>
#include <libxml/xpathInternals.h>
#include <libxml/xpath.h>
#include "xslt.h"
#include "xsltInternals.h"
#include "pattern.h"
#include "variables.h"
#include "namespaces.h"
#include "attributes.h"
#include "xsltutils.h"
#include "imports.h"
#include "keys.h"
#include "documents.h"
#include "extensions.h"
#include "preproc.h"
#include "extra.h"
#include "security.h"
#ifdef WITH_XSLT_DEBUG
#define WITH_XSLT_DEBUG_PARSING
/* #define WITH_XSLT_DEBUG_BLANKS */
#endif
const char *xsltEngineVersion = LIBXSLT_VERSION_STRING LIBXSLT_VERSION_EXTRA;
const int xsltLibxsltVersion = LIBXSLT_VERSION;
const int xsltLibxmlVersion = LIBXML_VERSION;
#ifdef XSLT_REFACTORED
const xmlChar *xsltConstNamespaceNameXSLT = (const xmlChar *) XSLT_NAMESPACE;
#define XSLT_ELEMENT_CATEGORY_XSLT 0
#define XSLT_ELEMENT_CATEGORY_EXTENSION 1
#define XSLT_ELEMENT_CATEGORY_LRE 2
/*
* xsltLiteralResultMarker:
* Marker for Literal result elements, in order to avoid multiple attempts
* to recognize such elements in the stylesheet's tree.
* This marker is set on node->psvi during the initial traversal
* of a stylesheet's node tree.
*
const xmlChar *xsltLiteralResultMarker =
(const xmlChar *) "Literal Result Element";
*/
/*
* xsltXSLTTextMarker:
* Marker for xsl:text elements. Used to recognize xsl:text elements
* for post-processing of the stylesheet's tree, where those
* elements are removed from the tree.
*/
const xmlChar *xsltXSLTTextMarker = (const xmlChar *) "XSLT Text Element";
/*
* xsltXSLTAttrMarker:
* Marker for XSLT attribute on Literal Result Elements.
*/
const xmlChar *xsltXSLTAttrMarker = (const xmlChar *) "LRE XSLT Attr";
#endif
#ifdef XSLT_LOCALE_WINAPI
extern xmlRMutexPtr xsltLocaleMutex;
#endif
/*
* Harmless but avoiding a problem when compiling against a
* libxml <= 2.3.11 without LIBXML_DEBUG_ENABLED
*/
#ifndef LIBXML_DEBUG_ENABLED
double xmlXPathStringEvalNumber(const xmlChar *str);
#endif
/*
* Useful macros
*/
#ifdef IS_BLANK
#undef IS_BLANK
#endif
#define IS_BLANK(c) (((c) == 0x20) || ((c) == 0x09) || ((c) == 0xA) || \
((c) == 0x0D))
#ifdef IS_BLANK_NODE
#undef IS_BLANK_NODE
#endif
#define IS_BLANK_NODE(n) \
(((n)->type == XML_TEXT_NODE) && (xsltIsBlank((n)->content)))
/**
* xsltParseContentError:
*
* @style: the stylesheet
* @node: the node where the error occured
*
* Compile-time error function.
*/
static void
xsltParseContentError(xsltStylesheetPtr style,
xmlNodePtr node)
{
if ((style == NULL) || (node == NULL))
return;
if (IS_XSLT_ELEM(node))
xsltTransformError(NULL, style, node,
"The XSLT-element '%s' is not allowed at this position.\n",
node->name);
else
xsltTransformError(NULL, style, node,
"The element '%s' is not allowed at this position.\n",
node->name);
style->errors++;
}
#ifdef XSLT_REFACTORED
#else
/**
* exclPrefixPush:
* @style: the transformation stylesheet
* @value: the excluded namespace name to push on the stack
*
* Push an excluded namespace name on the stack
*
* Returns the new index in the stack or -1 if already present or
* in case of error
*/
static int
exclPrefixPush(xsltStylesheetPtr style, xmlChar * value)
{
int i;
if (style->exclPrefixMax == 0) {
style->exclPrefixMax = 4;
style->exclPrefixTab =
(xmlChar * *)xmlMalloc(style->exclPrefixMax *
sizeof(style->exclPrefixTab[0]));
if (style->exclPrefixTab == NULL) {
xmlGenericError(xmlGenericErrorContext, "malloc failed !\n");
return (-1);
}
}
/* do not push duplicates */
for (i = 0;i < style->exclPrefixNr;i++) {
if (xmlStrEqual(style->exclPrefixTab[i], value))
return(-1);
}
if (style->exclPrefixNr >= style->exclPrefixMax) {
style->exclPrefixMax *= 2;
style->exclPrefixTab =
(xmlChar * *)xmlRealloc(style->exclPrefixTab,
style->exclPrefixMax *
sizeof(style->exclPrefixTab[0]));
if (style->exclPrefixTab == NULL) {
xmlGenericError(xmlGenericErrorContext, "realloc failed !\n");
return (-1);
}
}
style->exclPrefixTab[style->exclPrefixNr] = value;
style->exclPrefix = value;
return (style->exclPrefixNr++);
}
/**
* exclPrefixPop:
* @style: the transformation stylesheet
*
* Pop an excluded prefix value from the stack
*
* Returns the stored excluded prefix value
*/
static xmlChar *
exclPrefixPop(xsltStylesheetPtr style)
{
xmlChar *ret;
if (style->exclPrefixNr <= 0)
return (0);
style->exclPrefixNr--;
if (style->exclPrefixNr > 0)
style->exclPrefix = style->exclPrefixTab[style->exclPrefixNr - 1];
else
style->exclPrefix = NULL;
ret = style->exclPrefixTab[style->exclPrefixNr];
style->exclPrefixTab[style->exclPrefixNr] = 0;
return (ret);
}
#endif
/************************************************************************
* *
* Helper functions *
* *
************************************************************************/
static int initialized = 0;
/**
* xsltInit:
*
* Initializes the processor (e.g. registers built-in extensions,
* etc.)
*/
void
xsltInit (void) {
if (initialized == 0) {
initialized = 1;
#ifdef XSLT_LOCALE_WINAPI
xsltLocaleMutex = xmlNewRMutex();
#endif
xsltRegisterAllExtras();
}
}
/**
* xsltUninit:
*
* Uninitializes the processor.
*/
void
xsltUninit (void) {
#ifdef XSLT_LOCALE_WINAPI
xmlFreeRMutex(xsltLocaleMutex);
xsltLocaleMutex = NULL;
#endif
initialized = 0;
}
/**
* xsltIsBlank:
* @str: a string
*
* Check if a string is ignorable
*
* Returns 1 if the string is NULL or made of blanks chars, 0 otherwise
*/
int
xsltIsBlank(xmlChar *str) {
if (str == NULL)
return(1);
while (*str != 0) {
if (!(IS_BLANK(*str))) return(0);
str++;
}
return(1);
}
/************************************************************************
* *
* Routines to handle XSLT data structures *
* *
************************************************************************/
static xsltDecimalFormatPtr
xsltNewDecimalFormat(xmlChar *name)
{
xsltDecimalFormatPtr self;
/* UTF-8 for 0x2030 */
static const xmlChar permille[4] = {0xe2, 0x80, 0xb0, 0};
self = xmlMalloc(sizeof(xsltDecimalFormat));
if (self != NULL) {
self->next = NULL;
self->name = name;
/* Default values */
self->digit = xmlStrdup(BAD_CAST("#"));
self->patternSeparator = xmlStrdup(BAD_CAST(";"));
self->decimalPoint = xmlStrdup(BAD_CAST("."));
self->grouping = xmlStrdup(BAD_CAST(","));
self->percent = xmlStrdup(BAD_CAST("%"));
self->permille = xmlStrdup(BAD_CAST(permille));
self->zeroDigit = xmlStrdup(BAD_CAST("0"));
self->minusSign = xmlStrdup(BAD_CAST("-"));
self->infinity = xmlStrdup(BAD_CAST("Infinity"));
self->noNumber = xmlStrdup(BAD_CAST("NaN"));
}
return self;
}
static void
xsltFreeDecimalFormat(xsltDecimalFormatPtr self)
{
if (self != NULL) {
if (self->digit)
xmlFree(self->digit);
if (self->patternSeparator)
xmlFree(self->patternSeparator);
if (self->decimalPoint)
xmlFree(self->decimalPoint);
if (self->grouping)
xmlFree(self->grouping);
if (self->percent)
xmlFree(self->percent);
if (self->permille)
xmlFree(self->permille);
if (self->zeroDigit)
xmlFree(self->zeroDigit);
if (self->minusSign)
xmlFree(self->minusSign);
if (self->infinity)
xmlFree(self->infinity);
if (self->noNumber)
xmlFree(self->noNumber);
if (self->name)
xmlFree(self->name);
xmlFree(self);
}
}
static void
xsltFreeDecimalFormatList(xsltStylesheetPtr self)
{
xsltDecimalFormatPtr iter;
xsltDecimalFormatPtr tmp;
if (self == NULL)
return;
iter = self->decimalFormat;
while (iter != NULL) {
tmp = iter->next;
xsltFreeDecimalFormat(iter);
iter = tmp;
}
}
/**
* xsltDecimalFormatGetByName:
* @style: the XSLT stylesheet
* @name: the decimal-format name to find
*
* Find decimal-format by name
*
* Returns the xsltDecimalFormatPtr
*/
xsltDecimalFormatPtr
xsltDecimalFormatGetByName(xsltStylesheetPtr style, xmlChar *name)
{
xsltDecimalFormatPtr result = NULL;
if (name == NULL)
return style->decimalFormat;
while (style != NULL) {
for (result = style->decimalFormat->next;
result != NULL;
result = result->next) {
if (xmlStrEqual(name, result->name))
return result;
}
style = xsltNextImport(style);
}
return result;
}
/**
* xsltNewTemplate:
*
* Create a new XSLT Template
*
* Returns the newly allocated xsltTemplatePtr or NULL in case of error
*/
static xsltTemplatePtr
xsltNewTemplate(void) {
xsltTemplatePtr cur;
cur = (xsltTemplatePtr) xmlMalloc(sizeof(xsltTemplate));
if (cur == NULL) {
xsltTransformError(NULL, NULL, NULL,
"xsltNewTemplate : malloc failed\n");
return(NULL);
}
memset(cur, 0, sizeof(xsltTemplate));
cur->priority = XSLT_PAT_NO_PRIORITY;
return(cur);
}
/**
* xsltFreeTemplate:
* @template: an XSLT template
*
* Free up the memory allocated by @template
*/
static void
xsltFreeTemplate(xsltTemplatePtr template) {
if (template == NULL)
return;
if (template->match) xmlFree(template->match);
/*
* NOTE: @name and @nameURI are put into the string dict now.
* if (template->name) xmlFree(template->name);
* if (template->nameURI) xmlFree(template->nameURI);
*/
/*
if (template->mode) xmlFree(template->mode);
if (template->modeURI) xmlFree(template->modeURI);
*/
if (template->inheritedNs) xmlFree(template->inheritedNs);
/* free profiling data */
if (template->templCalledTab) xmlFree(template->templCalledTab);
if (template->templCountTab) xmlFree(template->templCountTab);
memset(template, -1, sizeof(xsltTemplate));
xmlFree(template);
}
/**
* xsltFreeTemplateList:
* @template: an XSLT template list
*
* Free up the memory allocated by all the elements of @template
*/
static void
xsltFreeTemplateList(xsltTemplatePtr template) {
xsltTemplatePtr cur;
while (template != NULL) {
cur = template;
template = template->next;
xsltFreeTemplate(cur);
}
}
#ifdef XSLT_REFACTORED
static void
xsltFreeNsAliasList(xsltNsAliasPtr item)
{
xsltNsAliasPtr tmp;
while (item) {
tmp = item;
item = item->next;
xmlFree(tmp);
}
return;
}
#ifdef XSLT_REFACTORED_XSLT_NSCOMP
static void
xsltFreeNamespaceMap(xsltNsMapPtr item)
{
xsltNsMapPtr tmp;
while (item) {
tmp = item;
item = item->next;
xmlFree(tmp);
}
return;
}
static xsltNsMapPtr
xsltNewNamespaceMapItem(xsltCompilerCtxtPtr cctxt,
xmlDocPtr doc,
xmlNsPtr ns,
xmlNodePtr elem)
{
xsltNsMapPtr ret;
if ((cctxt == NULL) || (doc == NULL) || (ns == NULL))
return(NULL);
ret = (xsltNsMapPtr) xmlMalloc(sizeof(xsltNsMap));
if (ret == NULL) {
xsltTransformError(NULL, cctxt->style, elem,
"Internal error: (xsltNewNamespaceMapItem) "
"memory allocation failed.\n");
return(NULL);
}
memset(ret, 0, sizeof(xsltNsMap));
ret->doc = doc;
ret->ns = ns;
ret->origNsName = ns->href;
/*
* Store the item at current stylesheet-level.
*/
if (cctxt->psData->nsMap != NULL)
ret->next = cctxt->psData->nsMap;
cctxt->psData->nsMap = ret;
return(ret);
}
#endif /* XSLT_REFACTORED_XSLT_NSCOMP */
/**
* xsltCompilerVarInfoFree:
* @cctxt: the compilation context
*
* Frees the list of information for vars/params.
*/
static void
xsltCompilerVarInfoFree(xsltCompilerCtxtPtr cctxt)
{
xsltVarInfoPtr ivar = cctxt->ivars, ivartmp;
while (ivar) {
ivartmp = ivar;
ivar = ivar->next;
xmlFree(ivartmp);
}
}
/**
* xsltCompilerCtxtFree:
*
* Free an XSLT compiler context.
*/
static void
xsltCompilationCtxtFree(xsltCompilerCtxtPtr cctxt)
{
if (cctxt == NULL)
return;
#ifdef WITH_XSLT_DEBUG_PARSING
xsltGenericDebug(xsltGenericDebugContext,
"Freeing compilation context\n");
xsltGenericDebug(xsltGenericDebugContext,
"### Max inodes: %d\n", cctxt->maxNodeInfos);
xsltGenericDebug(xsltGenericDebugContext,
"### Max LREs : %d\n", cctxt->maxLREs);
#endif
/*
* Free node-infos.
*/
if (cctxt->inodeList != NULL) {
xsltCompilerNodeInfoPtr tmp, cur = cctxt->inodeList;
while (cur != NULL) {
tmp = cur;
cur = cur->next;
xmlFree(tmp);
}
}
if (cctxt->tmpList != NULL)
xsltPointerListFree(cctxt->tmpList);
#ifdef XSLT_REFACTORED_XPATHCOMP
if (cctxt->xpathCtxt != NULL)
xmlXPathFreeContext(cctxt->xpathCtxt);
#endif
if (cctxt->nsAliases != NULL)
xsltFreeNsAliasList(cctxt->nsAliases);
if (cctxt->ivars)
xsltCompilerVarInfoFree(cctxt);
xmlFree(cctxt);
}
/**
* xsltCompilerCreate:
*
* Creates an XSLT compiler context.
*
* Returns the pointer to the created xsltCompilerCtxt or
* NULL in case of an internal error.
*/
static xsltCompilerCtxtPtr
xsltCompilationCtxtCreate(xsltStylesheetPtr style) {
xsltCompilerCtxtPtr ret;
ret = (xsltCompilerCtxtPtr) xmlMalloc(sizeof(xsltCompilerCtxt));
if (ret == NULL) {
xsltTransformError(NULL, style, NULL,
"xsltCompilerCreate: allocation of compiler "
"context failed.\n");
return(NULL);
}
memset(ret, 0, sizeof(xsltCompilerCtxt));
ret->errSeverity = XSLT_ERROR_SEVERITY_ERROR;
ret->tmpList = xsltPointerListCreate(20);
if (ret->tmpList == NULL) {
goto internal_err;
}
#ifdef XSLT_REFACTORED_XPATHCOMP
/*
* Create the XPath compilation context in order
* to speed up precompilation of XPath expressions.
*/
ret->xpathCtxt = xmlXPathNewContext(NULL);
if (ret->xpathCtxt == NULL)
goto internal_err;
#endif
return(ret);
internal_err:
xsltCompilationCtxtFree(ret);
return(NULL);
}
static void
xsltLREEffectiveNsNodesFree(xsltEffectiveNsPtr first)
{
xsltEffectiveNsPtr tmp;
while (first != NULL) {
tmp = first;
first = first->nextInStore;
xmlFree(tmp);
}
}
static void
xsltFreePrincipalStylesheetData(xsltPrincipalStylesheetDataPtr data)
{
if (data == NULL)
return;
if (data->inScopeNamespaces != NULL) {
int i;
xsltNsListContainerPtr nsi;
xsltPointerListPtr list =
(xsltPointerListPtr) data->inScopeNamespaces;
for (i = 0; i < list->number; i++) {
/*
* REVISIT TODO: Free info of in-scope namespaces.
*/
nsi = (xsltNsListContainerPtr) list->items[i];
if (nsi->list != NULL)
xmlFree(nsi->list);
xmlFree(nsi);
}
xsltPointerListFree(list);
data->inScopeNamespaces = NULL;
}
if (data->exclResultNamespaces != NULL) {
int i;
xsltPointerListPtr list = (xsltPointerListPtr)
data->exclResultNamespaces;
for (i = 0; i < list->number; i++)
xsltPointerListFree((xsltPointerListPtr) list->items[i]);
xsltPointerListFree(list);
data->exclResultNamespaces = NULL;
}
if (data->extElemNamespaces != NULL) {
xsltPointerListPtr list = (xsltPointerListPtr)
data->extElemNamespaces;
int i;
for (i = 0; i < list->number; i++)
xsltPointerListFree((xsltPointerListPtr) list->items[i]);
xsltPointerListFree(list);
data->extElemNamespaces = NULL;
}
if (data->effectiveNs) {
xsltLREEffectiveNsNodesFree(data->effectiveNs);
data->effectiveNs = NULL;
}
#ifdef XSLT_REFACTORED_XSLT_NSCOMP
xsltFreeNamespaceMap(data->nsMap);
#endif
xmlFree(data);
}
static xsltPrincipalStylesheetDataPtr
xsltNewPrincipalStylesheetData(void)
{
xsltPrincipalStylesheetDataPtr ret;
ret = (xsltPrincipalStylesheetDataPtr)
xmlMalloc(sizeof(xsltPrincipalStylesheetData));
if (ret == NULL) {
xsltTransformError(NULL, NULL, NULL,
"xsltNewPrincipalStylesheetData: memory allocation failed.\n");
return(NULL);
}
memset(ret, 0, sizeof(xsltPrincipalStylesheetData));
/*
* Global list of in-scope namespaces.
*/
ret->inScopeNamespaces = xsltPointerListCreate(-1);
if (ret->inScopeNamespaces == NULL)
goto internal_err;
/*
* Global list of excluded result ns-decls.
*/
ret->exclResultNamespaces = xsltPointerListCreate(-1);
if (ret->exclResultNamespaces == NULL)
goto internal_err;
/*
* Global list of extension instruction namespace names.
*/
ret->extElemNamespaces = xsltPointerListCreate(-1);
if (ret->extElemNamespaces == NULL)
goto internal_err;
return(ret);
internal_err:
return(NULL);
}
#endif
/**
* xsltNewStylesheet:
*
* Create a new XSLT Stylesheet
*
* Returns the newly allocated xsltStylesheetPtr or NULL in case of error
*/
xsltStylesheetPtr
xsltNewStylesheet(void) {
xsltStylesheetPtr ret = NULL;
ret = (xsltStylesheetPtr) xmlMalloc(sizeof(xsltStylesheet));
if (ret == NULL) {
xsltTransformError(NULL, NULL, NULL,
"xsltNewStylesheet : malloc failed\n");
goto internal_err;
}
memset(ret, 0, sizeof(xsltStylesheet));
ret->omitXmlDeclaration = -1;
ret->standalone = -1;
ret->decimalFormat = xsltNewDecimalFormat(NULL);
ret->indent = -1;
ret->errors = 0;
ret->warnings = 0;
ret->exclPrefixNr = 0;
ret->exclPrefixMax = 0;
ret->exclPrefixTab = NULL;
ret->extInfos = NULL;
ret->extrasNr = 0;
ret->internalized = 1;
ret->literal_result = 0;
ret->forwards_compatible = 0;
ret->dict = xmlDictCreate();
#ifdef WITH_XSLT_DEBUG
xsltGenericDebug(xsltGenericDebugContext,
"creating dictionary for stylesheet\n");
#endif
xsltInit();
return(ret);
internal_err:
if (ret != NULL)
xsltFreeStylesheet(ret);
return(NULL);
}
/**
* xsltAllocateExtra:
* @style: an XSLT stylesheet
*
* Allocate an extra runtime information slot statically while compiling
* the stylesheet and return its number
*
* Returns the number of the slot
*/
int
xsltAllocateExtra(xsltStylesheetPtr style)
{
return(style->extrasNr++);
}
/**
* xsltAllocateExtraCtxt:
* @ctxt: an XSLT transformation context
*
* Allocate an extra runtime information slot at run-time
* and return its number
* This make sure there is a slot ready in the transformation context
*
* Returns the number of the slot
*/
int
xsltAllocateExtraCtxt(xsltTransformContextPtr ctxt)
{
if (ctxt->extrasNr >= ctxt->extrasMax) {
int i;
if (ctxt->extrasNr == 0) {
ctxt->extrasMax = 20;
ctxt->extras = (xsltRuntimeExtraPtr)
xmlMalloc(ctxt->extrasMax * sizeof(xsltRuntimeExtra));
if (ctxt->extras == NULL) {
xmlGenericError(xmlGenericErrorContext,
"xsltAllocateExtraCtxt: out of memory\n");
ctxt->state = XSLT_STATE_ERROR;
return(0);
}
for (i = 0;i < ctxt->extrasMax;i++) {
ctxt->extras[i].info = NULL;
ctxt->extras[i].deallocate = NULL;
ctxt->extras[i].val.ptr = NULL;
}
} else {
xsltRuntimeExtraPtr tmp;
ctxt->extrasMax += 100;
tmp = (xsltRuntimeExtraPtr) xmlRealloc(ctxt->extras,
ctxt->extrasMax * sizeof(xsltRuntimeExtra));
if (tmp == NULL) {
xmlGenericError(xmlGenericErrorContext,
"xsltAllocateExtraCtxt: out of memory\n");
ctxt->state = XSLT_STATE_ERROR;
return(0);
}
ctxt->extras = tmp;
for (i = ctxt->extrasNr;i < ctxt->extrasMax;i++) {
ctxt->extras[i].info = NULL;
ctxt->extras[i].deallocate = NULL;
ctxt->extras[i].val.ptr = NULL;
}
}
}
return(ctxt->extrasNr++);
}
/**
* xsltFreeStylesheetList:
* @style: an XSLT stylesheet list
*
* Free up the memory allocated by the list @style
*/
static void
xsltFreeStylesheetList(xsltStylesheetPtr style) {
xsltStylesheetPtr next;
while (style != NULL) {
next = style->next;
xsltFreeStylesheet(style);
style = next;
}
}
/**
* xsltCleanupStylesheetTree:
*
* @doc: the document-node
* @node: the element where the stylesheet is rooted at
*
* Actually @node need not be the document-element, but
* currently Libxslt does not support embedded stylesheets.
*
* Returns 0 if OK, -1 on API or internal errors.
*/
static int
xsltCleanupStylesheetTree(xmlDocPtr doc ATTRIBUTE_UNUSED,
xmlNodePtr rootElem ATTRIBUTE_UNUSED)
{
#if 0 /* TODO: Currently disabled, since probably not needed. */
xmlNodePtr cur;
if ((doc == NULL) || (rootElem == NULL) ||
(rootElem->type != XML_ELEMENT_NODE) ||
(doc != rootElem->doc))
return(-1);
/*
* Cleanup was suggested by Aleksey Sanin:
* Clear the PSVI field to avoid problems if the
* node-tree of the stylesheet is intended to be used for
* further processing by the user (e.g. for compiling it
* once again - although not recommended).
*/
cur = rootElem;
while (cur != NULL) {
if (cur->type == XML_ELEMENT_NODE) {
/*
* Clear the PSVI field.
*/
cur->psvi = NULL;
if (cur->children) {
cur = cur->children;
continue;
}
}
leave_node:
if (cur == rootElem)
break;
if (cur->next != NULL)
cur = cur->next;
else {
cur = cur->parent;
if (cur == NULL)
break;
goto leave_node;
}
}
#endif /* #if 0 */
return(0);
}
/**
* xsltFreeStylesheet:
* @style: an XSLT stylesheet
*
* Free up the memory allocated by @style
*/
void
xsltFreeStylesheet(xsltStylesheetPtr style)
{
if (style == NULL)
return;
#ifdef XSLT_REFACTORED
/*
* Start with a cleanup of the main stylesheet's doc.
*/
if ((style->principal == style) && (style->doc))
xsltCleanupStylesheetTree(style->doc,
xmlDocGetRootElement(style->doc));
#ifdef XSLT_REFACTORED_XSLT_NSCOMP
/*
* Restore changed ns-decls before freeing the document.
*/
if ((style->doc != NULL) &&
XSLT_HAS_INTERNAL_NSMAP(style))
{
xsltRestoreDocumentNamespaces(XSLT_GET_INTERNAL_NSMAP(style),
style->doc);
}
#endif /* XSLT_REFACTORED_XSLT_NSCOMP */
#else
/*
* Start with a cleanup of the main stylesheet's doc.
*/
if ((style->parent == NULL) && (style->doc))
xsltCleanupStylesheetTree(style->doc,
xmlDocGetRootElement(style->doc));
#endif /* XSLT_REFACTORED */
xsltFreeKeys(style);
xsltFreeExts(style);
xsltFreeTemplateHashes(style);
xsltFreeDecimalFormatList(style);
xsltFreeTemplateList(style->templates);
xsltFreeAttributeSetsHashes(style);
xsltFreeNamespaceAliasHashes(style);
xsltFreeStylePreComps(style);
/*
* Free documents of all included stylsheet modules of this
* stylesheet level.
*/
xsltFreeStyleDocuments(style);
/*
* TODO: Best time to shutdown extension stuff?
*/
xsltShutdownExts(style);
if (style->variables != NULL)
xsltFreeStackElemList(style->variables);
if (style->cdataSection != NULL)
xmlHashFree(style->cdataSection, NULL);
if (style->stripSpaces != NULL)
xmlHashFree(style->stripSpaces, NULL);
if (style->nsHash != NULL)
xmlHashFree(style->nsHash, NULL);
if (style->exclPrefixTab != NULL)
xmlFree(style->exclPrefixTab);
if (style->method != NULL)
xmlFree(style->method);
if (style->methodURI != NULL)
xmlFree(style->methodURI);
if (style->version != NULL)
xmlFree(style->version);
if (style->encoding != NULL)
xmlFree(style->encoding);
if (style->doctypePublic != NULL)
xmlFree(style->doctypePublic);
if (style->doctypeSystem != NULL)
xmlFree(style->doctypeSystem);
if (style->mediaType != NULL)
xmlFree(style->mediaType);
if (style->attVTs)
xsltFreeAVTList(style->attVTs);
if (style->imports != NULL)
xsltFreeStylesheetList(style->imports);
#ifdef XSLT_REFACTORED
/*
* If this is the principal stylesheet, then
* free its internal data.
*/
if (style->principal == style) {
if (style->principalData) {
xsltFreePrincipalStylesheetData(style->principalData);
style->principalData = NULL;
}
}
#endif
/*
* Better to free the main document of this stylesheet level
* at the end - so here.
*/
if (style->doc != NULL) {
xmlFreeDoc(style->doc);
}
#ifdef WITH_XSLT_DEBUG
xsltGenericDebug(xsltGenericDebugContext,
"freeing dictionary from stylesheet\n");
#endif
xmlDictFree(style->dict);
memset(style, -1, sizeof(xsltStylesheet));
xmlFree(style);
}
/************************************************************************
* *
* Parsing of an XSLT Stylesheet *
* *
************************************************************************/
#ifdef XSLT_REFACTORED
/*
* This is now performed in an optimized way in xsltParseXSLTTemplate.
*/
#else
/**
* xsltGetInheritedNsList:
* @style: the stylesheet
* @template: the template
* @node: the current node
*
* Search all the namespace applying to a given element except the ones
* from excluded output prefixes currently in scope. Initialize the
* template inheritedNs list with it.
*
* Returns the number of entries found
*/
static int
xsltGetInheritedNsList(xsltStylesheetPtr style,
xsltTemplatePtr template,
xmlNodePtr node)
{
xmlNsPtr cur;
xmlNsPtr *ret = NULL;
int nbns = 0;
int maxns = 10;
int i;
if ((style == NULL) || (template == NULL) || (node == NULL) ||
(template->inheritedNsNr != 0) || (template->inheritedNs != NULL))
return(0);
while (node != NULL) {
if (node->type == XML_ELEMENT_NODE) {
cur = node->nsDef;
while (cur != NULL) {
if (xmlStrEqual(cur->href, XSLT_NAMESPACE))
goto skip_ns;
if ((cur->prefix != NULL) &&
(xsltCheckExtPrefix(style, cur->prefix)))
goto skip_ns;
/*
* Check if this namespace was excluded.
* Note that at this point only the exclusions defined
* on the topmost stylesheet element are in the exclusion-list.
*/
for (i = 0;i < style->exclPrefixNr;i++) {
if (xmlStrEqual(cur->href, style->exclPrefixTab[i]))
goto skip_ns;
}
if (ret == NULL) {
ret =
(xmlNsPtr *) xmlMalloc((maxns + 1) *
sizeof(xmlNsPtr));
if (ret == NULL) {
xmlGenericError(xmlGenericErrorContext,
"xsltGetInheritedNsList : out of memory!\n");
return(0);
}
ret[nbns] = NULL;
}
/*
* Skip shadowed namespace bindings.
*/
for (i = 0; i < nbns; i++) {
if ((cur->prefix == ret[i]->prefix) ||
(xmlStrEqual(cur->prefix, ret[i]->prefix)))
break;
}
if (i >= nbns) {
if (nbns >= maxns) {
maxns *= 2;
ret = (xmlNsPtr *) xmlRealloc(ret,
(maxns +
1) *
sizeof(xmlNsPtr));
if (ret == NULL) {
xmlGenericError(xmlGenericErrorContext,
"xsltGetInheritedNsList : realloc failed!\n");
return(0);
}
}
ret[nbns++] = cur;
ret[nbns] = NULL;
}
skip_ns:
cur = cur->next;
}
}
node = node->parent;
}
if (nbns != 0) {
#ifdef WITH_XSLT_DEBUG_PARSING
xsltGenericDebug(xsltGenericDebugContext,
"template has %d inherited namespaces\n", nbns);
#endif
template->inheritedNsNr = nbns;
template->inheritedNs = ret;
}
return (nbns);
}
#endif /* else of XSLT_REFACTORED */
/**
* xsltParseStylesheetOutput:
* @style: the XSLT stylesheet
* @cur: the "output" element
*
* parse an XSLT stylesheet output element and record
* information related to the stylesheet output
*/
void
xsltParseStylesheetOutput(xsltStylesheetPtr style, xmlNodePtr cur)
{
xmlChar *elements,
*prop;
xmlChar *element,
*end;
if ((cur == NULL) || (style == NULL) || (cur->type != XML_ELEMENT_NODE))
return;
prop = xmlGetNsProp(cur, (const xmlChar *) "version", NULL);
if (prop != NULL) {
if (style->version != NULL)
xmlFree(style->version);
style->version = prop;
}
prop = xmlGetNsProp(cur, (const xmlChar *) "encoding", NULL);
if (prop != NULL) {
if (style->encoding != NULL)
xmlFree(style->encoding);
style->encoding = prop;
}
/* relaxed to support xt:document
* TODO KB: What does "relaxed to support xt:document" mean?
*/
prop = xmlGetNsProp(cur, (const xmlChar *) "method", NULL);
if (prop != NULL) {
const xmlChar *URI;
if (style->method != NULL)
xmlFree(style->method);
style->method = NULL;
if (style->methodURI != NULL)
xmlFree(style->methodURI);
style->methodURI = NULL;
/*
* TODO: Don't use xsltGetQNameURI().
*/
URI = xsltGetQNameURI(cur, &prop);
if (prop == NULL) {
if (style != NULL) style->errors++;
} else if (URI == NULL) {
if ((xmlStrEqual(prop, (const xmlChar *) "xml")) ||
(xmlStrEqual(prop, (const xmlChar *) "html")) ||
(xmlStrEqual(prop, (const xmlChar *) "text"))) {
style->method = prop;
} else {
xsltTransformError(NULL, style, cur,
"invalid value for method: %s\n", prop);
if (style != NULL) style->warnings++;
}
} else {
style->method = prop;
style->methodURI = xmlStrdup(URI);
}
}
prop = xmlGetNsProp(cur, (const xmlChar *) "doctype-system", NULL);
if (prop != NULL) {
if (style->doctypeSystem != NULL)
xmlFree(style->doctypeSystem);
style->doctypeSystem = prop;
}
prop = xmlGetNsProp(cur, (const xmlChar *) "doctype-public", NULL);
if (prop != NULL) {
if (style->doctypePublic != NULL)
xmlFree(style->doctypePublic);
style->doctypePublic = prop;
}
prop = xmlGetNsProp(cur, (const xmlChar *) "standalone", NULL);
if (prop != NULL) {
if (xmlStrEqual(prop, (const xmlChar *) "yes")) {
style->standalone = 1;
} else if (xmlStrEqual(prop, (const xmlChar *) "no")) {
style->standalone = 0;
} else {
xsltTransformError(NULL, style, cur,
"invalid value for standalone: %s\n", prop);
style->errors++;
}
xmlFree(prop);
}
prop = xmlGetNsProp(cur, (const xmlChar *) "indent", NULL);
if (prop != NULL) {
if (xmlStrEqual(prop, (const xmlChar *) "yes")) {
style->indent = 1;
} else if (xmlStrEqual(prop, (const xmlChar *) "no")) {
style->indent = 0;
} else {
xsltTransformError(NULL, style, cur,
"invalid value for indent: %s\n", prop);
style->errors++;
}
xmlFree(prop);
}
prop = xmlGetNsProp(cur, (const xmlChar *) "omit-xml-declaration", NULL);
if (prop != NULL) {
if (xmlStrEqual(prop, (const xmlChar *) "yes")) {
style->omitXmlDeclaration = 1;
} else if (xmlStrEqual(prop, (const xmlChar *) "no")) {
style->omitXmlDeclaration = 0;
} else {
xsltTransformError(NULL, style, cur,
"invalid value for omit-xml-declaration: %s\n",
prop);
style->errors++;
}
xmlFree(prop);
}
elements = xmlGetNsProp(cur, (const xmlChar *) "cdata-section-elements",
NULL);
if (elements != NULL) {
if (style->cdataSection == NULL)
style->cdataSection = xmlHashCreate(10);
if (style->cdataSection == NULL)
return;
element = elements;
while (*element != 0) {
while (IS_BLANK(*element))
element++;
if (*element == 0)
break;
end = element;
while ((*end != 0) && (!IS_BLANK(*end)))
end++;
element = xmlStrndup(element, end - element);
if (element) {
#ifdef WITH_XSLT_DEBUG_PARSING
xsltGenericDebug(xsltGenericDebugContext,
"add cdata section output element %s\n",
element);
#endif
if (xmlValidateQName(BAD_CAST element, 0) != 0) {
xsltTransformError(NULL, style, cur,
"Attribute 'cdata-section-elements': The value "
"'%s' is not a valid QName.\n", element);
xmlFree(element);
style->errors++;
} else {
const xmlChar *URI;
/*
* TODO: Don't use xsltGetQNameURI().
*/
URI = xsltGetQNameURI(cur, &element);
if (element == NULL) {
/*
* TODO: We'll report additionally an error
* via the stylesheet's error handling.
*/
xsltTransformError(NULL, style, cur,
"Attribute 'cdata-section-elements': The value "
"'%s' is not a valid QName.\n", element);
style->errors++;
} else {
xmlNsPtr ns;
/*
* XSLT-1.0 "Each QName is expanded into an
* expanded-name using the namespace declarations in
* effect on the xsl:output element in which the QName
* occurs; if there is a default namespace, it is used
* for QNames that do not have a prefix"
* NOTE: Fix of bug #339570.
*/
if (URI == NULL) {
ns = xmlSearchNs(style->doc, cur, NULL);
if (ns != NULL)
URI = ns->href;
}
xmlHashAddEntry2(style->cdataSection, element, URI,
(void *) "cdata");
xmlFree(element);
}
}
}
element = end;
}
xmlFree(elements);
}
prop = xmlGetNsProp(cur, (const xmlChar *) "media-type", NULL);
if (prop != NULL) {
if (style->mediaType)
xmlFree(style->mediaType);
style->mediaType = prop;
}
if (cur->children != NULL) {
xsltParseContentError(style, cur->children);
}
}
/**
* xsltParseStylesheetDecimalFormat:
* @style: the XSLT stylesheet
* @cur: the "decimal-format" element
*
* <!-- Category: top-level-element -->
* <xsl:decimal-format
* name = qname, decimal-separator = char, grouping-separator = char,
* infinity = string, minus-sign = char, NaN = string, percent = char
* per-mille = char, zero-digit = char, digit = char,
* pattern-separator = char />
*
* parse an XSLT stylesheet decimal-format element and
* and record the formatting characteristics
*/
static void
xsltParseStylesheetDecimalFormat(xsltStylesheetPtr style, xmlNodePtr cur)
{
xmlChar *prop;
xsltDecimalFormatPtr format;
xsltDecimalFormatPtr iter;
if ((cur == NULL) || (style == NULL) || (cur->type != XML_ELEMENT_NODE))
return;
format = style->decimalFormat;
prop = xmlGetNsProp(cur, BAD_CAST("name"), NULL);
if (prop != NULL) {
format = xsltDecimalFormatGetByName(style, prop);
if (format != NULL) {
xsltTransformError(NULL, style, cur,
"xsltParseStylestyleDecimalFormat: %s already exists\n", prop);
if (style != NULL) style->warnings++;
return;
}
format = xsltNewDecimalFormat(prop);
if (format == NULL) {
xsltTransformError(NULL, style, cur,
"xsltParseStylestyleDecimalFormat: failed creating new decimal-format\n");
if (style != NULL) style->errors++;
return;
}
/* Append new decimal-format structure */
for (iter = style->decimalFormat; iter->next; iter = iter->next)
;
if (iter)
iter->next = format;
}
prop = xmlGetNsProp(cur, (const xmlChar *)"decimal-separator", NULL);
if (prop != NULL) {
if (format->decimalPoint != NULL) xmlFree(format->decimalPoint);
format->decimalPoint = prop;
}
prop = xmlGetNsProp(cur, (const xmlChar *)"grouping-separator", NULL);
if (prop != NULL) {
if (format->grouping != NULL) xmlFree(format->grouping);
format->grouping = prop;
}
prop = xmlGetNsProp(cur, (const xmlChar *)"infinity", NULL);
if (prop != NULL) {
if (format->infinity != NULL) xmlFree(format->infinity);
format->infinity = prop;
}
prop = xmlGetNsProp(cur, (const xmlChar *)"minus-sign", NULL);
if (prop != NULL) {
if (format->minusSign != NULL) xmlFree(format->minusSign);
format->minusSign = prop;
}
prop = xmlGetNsProp(cur, (const xmlChar *)"NaN", NULL);
if (prop != NULL) {
if (format->noNumber != NULL) xmlFree(format->noNumber);
format->noNumber = prop;
}
prop = xmlGetNsProp(cur, (const xmlChar *)"percent", NULL);
if (prop != NULL) {
if (format->percent != NULL) xmlFree(format->percent);
format->percent = prop;
}
prop = xmlGetNsProp(cur, (const xmlChar *)"per-mille", NULL);
if (prop != NULL) {
if (format->permille != NULL) xmlFree(format->permille);
format->permille = prop;
}
prop = xmlGetNsProp(cur, (const xmlChar *)"zero-digit", NULL);
if (prop != NULL) {
if (format->zeroDigit != NULL) xmlFree(format->zeroDigit);
format->zeroDigit = prop;
}
prop = xmlGetNsProp(cur, (const xmlChar *)"digit", NULL);
if (prop != NULL) {
if (format->digit != NULL) xmlFree(format->digit);
format->digit = prop;
}
prop = xmlGetNsProp(cur, (const xmlChar *)"pattern-separator", NULL);
if (prop != NULL) {
if (format->patternSeparator != NULL) xmlFree(format->patternSeparator);
format->patternSeparator = prop;
}
if (cur->children != NULL) {
xsltParseContentError(style, cur->children);
}
}
/**
* xsltParseStylesheetPreserveSpace:
* @style: the XSLT stylesheet
* @cur: the "preserve-space" element
*
* parse an XSLT stylesheet preserve-space element and record
* elements needing preserving
*/
static void
xsltParseStylesheetPreserveSpace(xsltStylesheetPtr style, xmlNodePtr cur) {
xmlChar *elements;
xmlChar *element, *end;
if ((cur == NULL) || (style == NULL) || (cur->type != XML_ELEMENT_NODE))
return;
elements = xmlGetNsProp(cur, (const xmlChar *)"elements", NULL);
if (elements == NULL) {
xsltTransformError(NULL, style, cur,
"xsltParseStylesheetPreserveSpace: missing elements attribute\n");
if (style != NULL) style->warnings++;
return;
}
if (style->stripSpaces == NULL)
style->stripSpaces = xmlHashCreate(10);
if (style->stripSpaces == NULL)
return;
element = elements;
while (*element != 0) {
while (IS_BLANK(*element)) element++;
if (*element == 0)
break;
end = element;
while ((*end != 0) && (!IS_BLANK(*end))) end++;
element = xmlStrndup(element, end - element);
if (element) {
#ifdef WITH_XSLT_DEBUG_PARSING
xsltGenericDebug(xsltGenericDebugContext,
"add preserved space element %s\n", element);
#endif
if (xmlStrEqual(element, (const xmlChar *)"*")) {
style->stripAll = -1;
} else {
const xmlChar *URI;
/*
* TODO: Don't use xsltGetQNameURI().
*/
URI = xsltGetQNameURI(cur, &element);
xmlHashAddEntry2(style->stripSpaces, element, URI,
(xmlChar *) "preserve");
}
xmlFree(element);
}
element = end;
}
xmlFree(elements);
if (cur->children != NULL) {
xsltParseContentError(style, cur->children);
}
}
#ifdef XSLT_REFACTORED
#else
/**
* xsltParseStylesheetExtPrefix:
* @style: the XSLT stylesheet
* @template: the "extension-element-prefixes" prefix
*
* parse an XSLT stylesheet's "extension-element-prefix" attribute value
* and register the namespaces of extension instruction.
* SPEC "A namespace is designated as an extension namespace by using
* an extension-element-prefixes attribute on:
* 1) an xsl:stylesheet element
* 2) an xsl:extension-element-prefixes attribute on a
* literal result element
* 3) an extension instruction."
*/
static void
xsltParseStylesheetExtPrefix(xsltStylesheetPtr style, xmlNodePtr cur,
int isXsltElem) {
xmlChar *prefixes;
xmlChar *prefix, *end;
if ((cur == NULL) || (style == NULL) || (cur->type != XML_ELEMENT_NODE))
return;
if (isXsltElem) {
/* For xsl:stylesheet/xsl:transform. */
prefixes = xmlGetNsProp(cur,
(const xmlChar *)"extension-element-prefixes", NULL);
} else {
/* For literal result elements and extension instructions. */
prefixes = xmlGetNsProp(cur,
(const xmlChar *)"extension-element-prefixes", XSLT_NAMESPACE);
}
if (prefixes == NULL) {
return;
}
prefix = prefixes;
while (*prefix != 0) {
while (IS_BLANK(*prefix)) prefix++;
if (*prefix == 0)
break;
end = prefix;
while ((*end != 0) && (!IS_BLANK(*end))) end++;
prefix = xmlStrndup(prefix, end - prefix);
if (prefix) {
xmlNsPtr ns;
if (xmlStrEqual(prefix, (const xmlChar *)"#default"))
ns = xmlSearchNs(style->doc, cur, NULL);
else
ns = xmlSearchNs(style->doc, cur, prefix);
if (ns == NULL) {
xsltTransformError(NULL, style, cur,
"xsl:extension-element-prefix : undefined namespace %s\n",
prefix);
if (style != NULL) style->warnings++;
} else {
#ifdef WITH_XSLT_DEBUG_PARSING
xsltGenericDebug(xsltGenericDebugContext,
"add extension prefix %s\n", prefix);
#endif
xsltRegisterExtPrefix(style, prefix, ns->href);
}
xmlFree(prefix);
}
prefix = end;
}
xmlFree(prefixes);
}
#endif /* else of XSLT_REFACTORED */
/**
* xsltParseStylesheetStripSpace:
* @style: the XSLT stylesheet
* @cur: the "strip-space" element
*
* parse an XSLT stylesheet's strip-space element and record
* the elements needing stripping
*/
static void
xsltParseStylesheetStripSpace(xsltStylesheetPtr style, xmlNodePtr cur) {
xmlChar *elements;
xmlChar *element, *end;
if ((cur == NULL) || (style == NULL) || (cur->type != XML_ELEMENT_NODE))
return;
elements = xmlGetNsProp(cur, (const xmlChar *)"elements", NULL);
if (elements == NULL) {
xsltTransformError(NULL, style, cur,
"xsltParseStylesheetStripSpace: missing elements attribute\n");
if (style != NULL) style->warnings++;
return;
}
if (style->stripSpaces == NULL)
style->stripSpaces = xmlHashCreate(10);
if (style->stripSpaces == NULL)
return;
element = elements;
while (*element != 0) {
while (IS_BLANK(*element)) element++;
if (*element == 0)
break;
end = element;
while ((*end != 0) && (!IS_BLANK(*end))) end++;
element = xmlStrndup(element, end - element);
if (element) {
#ifdef WITH_XSLT_DEBUG_PARSING
xsltGenericDebug(xsltGenericDebugContext,
"add stripped space element %s\n", element);
#endif
if (xmlStrEqual(element, (const xmlChar *)"*")) {
style->stripAll = 1;
} else {
const xmlChar *URI;
/*
* TODO: Don't use xsltGetQNameURI().
*/
URI = xsltGetQNameURI(cur, &element);
xmlHashAddEntry2(style->stripSpaces, element, URI,
(xmlChar *) "strip");
}
xmlFree(element);
}
element = end;
}
xmlFree(elements);
if (cur->children != NULL) {
xsltParseContentError(style, cur->children);
}
}
#ifdef XSLT_REFACTORED
#else
/**
* xsltParseStylesheetExcludePrefix:
* @style: the XSLT stylesheet
* @cur: the current point in the stylesheet
*
* parse an XSLT stylesheet exclude prefix and record
* namespaces needing stripping
*
* Returns the number of Excluded prefixes added at that level
*/
static int
xsltParseStylesheetExcludePrefix(xsltStylesheetPtr style, xmlNodePtr cur,
int isXsltElem)
{
int nb = 0;
xmlChar *prefixes;
xmlChar *prefix, *end;
if ((cur == NULL) || (style == NULL) || (cur->type != XML_ELEMENT_NODE))
return(0);
if (isXsltElem)
prefixes = xmlGetNsProp(cur,
(const xmlChar *)"exclude-result-prefixes", NULL);
else
prefixes = xmlGetNsProp(cur,
(const xmlChar *)"exclude-result-prefixes", XSLT_NAMESPACE);
if (prefixes == NULL) {
return(0);
}
prefix = prefixes;
while (*prefix != 0) {
while (IS_BLANK(*prefix)) prefix++;
if (*prefix == 0)
break;
end = prefix;
while ((*end != 0) && (!IS_BLANK(*end))) end++;
prefix = xmlStrndup(prefix, end - prefix);
if (prefix) {
xmlNsPtr ns;
if (xmlStrEqual(prefix, (const xmlChar *)"#default"))
ns = xmlSearchNs(style->doc, cur, NULL);
else
ns = xmlSearchNs(style->doc, cur, prefix);
if (ns == NULL) {
xsltTransformError(NULL, style, cur,
"xsl:exclude-result-prefixes : undefined namespace %s\n",
prefix);
if (style != NULL) style->warnings++;
} else {
if (exclPrefixPush(style, (xmlChar *) ns->href) >= 0) {
#ifdef WITH_XSLT_DEBUG_PARSING
xsltGenericDebug(xsltGenericDebugContext,
"exclude result prefix %s\n", prefix);
#endif
nb++;
}
}
xmlFree(prefix);
}
prefix = end;
}
xmlFree(prefixes);
return(nb);
}
#endif /* else of XSLT_REFACTORED */
#ifdef XSLT_REFACTORED
/*
* xsltTreeEnsureXMLDecl:
* @doc: the doc
*
* BIG NOTE:
* This was copy&pasted from Libxml2's xmlTreeEnsureXMLDecl() in "tree.c".
* Ensures that there is an XML namespace declaration on the doc.
*
* Returns the XML ns-struct or NULL on API and internal errors.
*/
static xmlNsPtr
xsltTreeEnsureXMLDecl(xmlDocPtr doc)
{
if (doc == NULL)
return (NULL);
if (doc->oldNs != NULL)
return (doc->oldNs);
{
xmlNsPtr ns;
ns = (xmlNsPtr) xmlMalloc(sizeof(xmlNs));
if (ns == NULL) {
xmlGenericError(xmlGenericErrorContext,
"xsltTreeEnsureXMLDecl: Failed to allocate "
"the XML namespace.\n");
return (NULL);
}
memset(ns, 0, sizeof(xmlNs));
ns->type = XML_LOCAL_NAMESPACE;
/*
* URGENT TODO: revisit this.
*/
#ifdef LIBXML_NAMESPACE_DICT
if (doc->dict)
ns->href = xmlDictLookup(doc->dict, XML_XML_NAMESPACE, -1);
else
ns->href = xmlStrdup(XML_XML_NAMESPACE);
#else
ns->href = xmlStrdup(XML_XML_NAMESPACE);
#endif
ns->prefix = xmlStrdup((const xmlChar *)"xml");
doc->oldNs = ns;
return (ns);
}
}
/*
* xsltTreeAcquireStoredNs:
* @doc: the doc
* @nsName: the namespace name
* @prefix: the prefix
*
* BIG NOTE:
* This was copy&pasted from Libxml2's xmlDOMWrapStoreNs() in "tree.c".
* Creates or reuses an xmlNs struct on doc->oldNs with
* the given prefix and namespace name.
*
* Returns the aquired ns struct or NULL in case of an API
* or internal error.
*/
static xmlNsPtr
xsltTreeAcquireStoredNs(xmlDocPtr doc,
const xmlChar *nsName,
const xmlChar *prefix)
{
xmlNsPtr ns;
if (doc == NULL)
return (NULL);
if (doc->oldNs != NULL)
ns = doc->oldNs;
else
ns = xsltTreeEnsureXMLDecl(doc);
if (ns == NULL)
return (NULL);
if (ns->next != NULL) {
/* Reuse. */
ns = ns->next;
while (ns != NULL) {
if ((ns->prefix == NULL) != (prefix == NULL)) {
/* NOP */
} else if (prefix == NULL) {
if (xmlStrEqual(ns->href, nsName))
return (ns);
} else {
if ((ns->prefix[0] == prefix[0]) &&
xmlStrEqual(ns->prefix, prefix) &&
xmlStrEqual(ns->href, nsName))
return (ns);
}
if (ns->next == NULL)
break;
ns = ns->next;
}
}
/* Create. */
ns->next = xmlNewNs(NULL, nsName, prefix);
return (ns->next);
}
/**
* xsltLREBuildEffectiveNs:
*
* Apply ns-aliasing on the namespace of the given @elem and
* its attributes.
*/
static int
xsltLREBuildEffectiveNs(xsltCompilerCtxtPtr cctxt,
xmlNodePtr elem)
{
xmlNsPtr ns;
xsltNsAliasPtr alias;
if ((cctxt == NULL) || (elem == NULL))
return(-1);
if ((cctxt->nsAliases == NULL) || (! cctxt->hasNsAliases))
return(0);
alias = cctxt->nsAliases;
while (alias != NULL) {
if ( /* If both namespaces are NULL... */
( (elem->ns == NULL) &&
((alias->literalNs == NULL) ||
(alias->literalNs->href == NULL)) ) ||
/* ... or both namespace are equal */
( (elem->ns != NULL) &&
(alias->literalNs != NULL) &&
xmlStrEqual(elem->ns->href, alias->literalNs->href) ) )
{
if ((alias->targetNs != NULL) &&
(alias->targetNs->href != NULL))
{
/*
* Convert namespace.
*/
if (elem->doc == alias->docOfTargetNs) {
/*
* This is the nice case: same docs.
* This will eventually assign a ns-decl which
* is shadowed, but this has no negative effect on
* the generation of the result tree.
*/
elem->ns = alias->targetNs;
} else {
/*
* This target xmlNs originates from a different
* stylesheet tree. Try to locate it in the
* in-scope namespaces.
* OPTIMIZE TODO: Use the compiler-node-info inScopeNs.
*/
ns = xmlSearchNs(elem->doc, elem,
alias->targetNs->prefix);
/*
* If no matching ns-decl found, then assign a
* ns-decl stored in xmlDoc.
*/
if ((ns == NULL) ||
(! xmlStrEqual(ns->href, alias->targetNs->href)))
{
/*
* BIG NOTE: The use of xsltTreeAcquireStoredNs()
* is not very efficient, but currently I don't
* see an other way of *safely* changing a node's
* namespace, since the xmlNs struct in
* alias->targetNs might come from an other
* stylesheet tree. So we need to anchor it in the
* current document, without adding it to the tree,
* which would otherwise change the in-scope-ns
* semantic of the tree.
*/
ns = xsltTreeAcquireStoredNs(elem->doc,
alias->targetNs->href,
alias->targetNs->prefix);
if (ns == NULL) {
xsltTransformError(NULL, cctxt->style, elem,
"Internal error in "
"xsltLREBuildEffectiveNs(): "
"failed to acquire a stored "
"ns-declaration.\n");
cctxt->style->errors++;
return(-1);
}
}
elem->ns = ns;
}
} else {
/*
* Move into or leave in the NULL namespace.
*/
elem->ns = NULL;
}
break;
}
alias = alias->next;
}
/*
* Same with attributes of literal result elements.
*/
if (elem->properties != NULL) {
xmlAttrPtr attr = elem->properties;
while (attr != NULL) {
if (attr->ns == NULL) {
attr = attr->next;
continue;
}
alias = cctxt->nsAliases;
while (alias != NULL) {
if ( /* If both namespaces are NULL... */
( (elem->ns == NULL) &&
((alias->literalNs == NULL) ||
(alias->literalNs->href == NULL)) ) ||
/* ... or both namespace are equal */
( (elem->ns != NULL) &&
(alias->literalNs != NULL) &&
xmlStrEqual(elem->ns->href, alias->literalNs->href) ) )
{
if ((alias->targetNs != NULL) &&
(alias->targetNs->href != NULL))
{
if (elem->doc == alias->docOfTargetNs) {
elem->ns = alias->targetNs;
} else {
ns = xmlSearchNs(elem->doc, elem,
alias->targetNs->prefix);
if ((ns == NULL) ||
(! xmlStrEqual(ns->href, alias->targetNs->href)))
{
ns = xsltTreeAcquireStoredNs(elem->doc,
alias->targetNs->href,
alias->targetNs->prefix);
if (ns == NULL) {
xsltTransformError(NULL, cctxt->style, elem,
"Internal error in "
"xsltLREBuildEffectiveNs(): "
"failed to acquire a stored "
"ns-declaration.\n");
cctxt->style->errors++;
return(-1);
}
}
elem->ns = ns;
}
} else {
/*
* Move into or leave in the NULL namespace.
*/
elem->ns = NULL;
}
break;
}
alias = alias->next;
}
attr = attr->next;
}
}
return(0);
}
/**
* xsltLREBuildEffectiveNsNodes:
*
* Computes the effective namespaces nodes for a literal result
* element.
* @effectiveNs is the set of effective ns-nodes
* on the literal result element, which will be added to the result
* element if not already existing in the result tree.
* This means that excluded namespaces (via exclude-result-prefixes,
* extension-element-prefixes and the XSLT namespace) not added
* to the set.
* Namespace-aliasing was applied on the @effectiveNs.
*/
static int
xsltLREBuildEffectiveNsNodes(xsltCompilerCtxtPtr cctxt,
xsltStyleItemLRElementInfoPtr item,
xmlNodePtr elem,
int isLRE)
{
xmlNsPtr ns, tmpns;
xsltEffectiveNsPtr effNs, lastEffNs = NULL;
int i, j, holdByElem;
xsltPointerListPtr extElemNs = cctxt->inode->extElemNs;
xsltPointerListPtr exclResultNs = cctxt->inode->exclResultNs;
if ((cctxt == NULL) || (cctxt->inode == NULL) || (elem == NULL) ||
(item == NULL) || (item->effectiveNs != NULL))
return(-1);
if (item->inScopeNs == NULL)
return(0);
extElemNs = cctxt->inode->extElemNs;
exclResultNs = cctxt->inode->exclResultNs;
for (i = 0; i < item->inScopeNs->totalNumber; i++) {
ns = item->inScopeNs->list[i];
/*
* Skip namespaces designated as excluded namespaces
* -------------------------------------------------
*
* XSLT-20 TODO: In XSLT 2.0 we need to keep namespaces
* which are target namespaces of namespace-aliases
* regardless if designated as excluded.
*
* Exclude the XSLT namespace.
*/
if (xmlStrEqual(ns->href, XSLT_NAMESPACE))
goto skip_ns;
/*
* Apply namespace aliasing
* ------------------------
*
* SPEC XSLT 2.0
* "- A namespace node whose string value is a literal namespace
* URI is not copied to the result tree.
* - A namespace node whose string value is a target namespace URI
* is copied to the result tree, whether or not the URI
* identifies an excluded namespace."
*
* NOTE: The ns-aliasing machanism is non-cascading.
* (checked with Saxon, Xalan and MSXML .NET).
* URGENT TODO: is style->nsAliases the effective list of
* ns-aliases, or do we need to lookup the whole
* import-tree?
* TODO: Get rid of import-tree lookup.
*/
if (cctxt->hasNsAliases) {
xsltNsAliasPtr alias;
/*
* First check for being a target namespace.
*/
alias = cctxt->nsAliases;
do {
/*
* TODO: Is xmlns="" handled already?
*/
if ((alias->targetNs != NULL) &&
(xmlStrEqual(alias->targetNs->href, ns->href)))
{
/*
* Recognized as a target namespace; use it regardless
* if excluded otherwise.
*/
goto add_effective_ns;
}
alias = alias->next;
} while (alias != NULL);
alias = cctxt->nsAliases;
do {
/*
* TODO: Is xmlns="" handled already?
*/
if ((alias->literalNs != NULL) &&
(xmlStrEqual(alias->literalNs->href, ns->href)))
{
/*
* Recognized as an namespace alias; do not use it.
*/
goto skip_ns;
}
alias = alias->next;
} while (alias != NULL);
}
/*
* Exclude excluded result namespaces.
*/
if (exclResultNs) {
for (j = 0; j < exclResultNs->number; j++)
if (xmlStrEqual(ns->href, BAD_CAST exclResultNs->items[j]))
goto skip_ns;
}
/*
* Exclude extension-element namespaces.
*/
if (extElemNs) {
for (j = 0; j < extElemNs->number; j++)
if (xmlStrEqual(ns->href, BAD_CAST extElemNs->items[j]))
goto skip_ns;
}
add_effective_ns:
/*
* OPTIMIZE TODO: This information may not be needed.
*/
if (isLRE && (elem->nsDef != NULL)) {
holdByElem = 0;
tmpns = elem->nsDef;
do {
if (tmpns == ns) {
holdByElem = 1;
break;
}
tmpns = tmpns->next;
} while (tmpns != NULL);
} else
holdByElem = 0;
/*
* Add the effective namespace declaration.
*/
effNs = (xsltEffectiveNsPtr) xmlMalloc(sizeof(xsltEffectiveNs));
if (effNs == NULL) {
xsltTransformError(NULL, cctxt->style, elem,
"Internal error in xsltLREBuildEffectiveNs(): "
"failed to allocate memory.\n");
cctxt->style->errors++;
return(-1);
}
if (cctxt->psData->effectiveNs == NULL) {
cctxt->psData->effectiveNs = effNs;
effNs->nextInStore = NULL;
} else {
effNs->nextInStore = cctxt->psData->effectiveNs;
cctxt->psData->effectiveNs = effNs;
}
effNs->next = NULL;
effNs->prefix = ns->prefix;
effNs->nsName = ns->href;
effNs->holdByElem = holdByElem;
if (lastEffNs == NULL)
item->effectiveNs = effNs;
else
lastEffNs->next = effNs;
lastEffNs = effNs;
skip_ns:
{}
}
return(0);
}
/**
* xsltLREInfoCreate:
*
* @isLRE: indicates if the given @elem is a literal result element
*
* Creates a new info for a literal result element.
*/
static int
xsltLREInfoCreate(xsltCompilerCtxtPtr cctxt,
xmlNodePtr elem,
int isLRE)
{
xsltStyleItemLRElementInfoPtr item;
if ((cctxt == NULL) || (cctxt->inode == NULL))
return(-1);
item = (xsltStyleItemLRElementInfoPtr)
xmlMalloc(sizeof(xsltStyleItemLRElementInfo));
if (item == NULL) {
xsltTransformError(NULL, cctxt->style, NULL,
"Internal error in xsltLREInfoCreate(): "
"memory allocation failed.\n");
cctxt->style->errors++;
return(-1);
}
memset(item, 0, sizeof(xsltStyleItemLRElementInfo));
item->type = XSLT_FUNC_LITERAL_RESULT_ELEMENT;
/*
* Store it in the stylesheet.
*/
item->next = cctxt->style->preComps;
cctxt->style->preComps = (xsltElemPreCompPtr) item;
/*
* @inScopeNs are used for execution of XPath expressions
* in AVTs.
*/
item->inScopeNs = cctxt->inode->inScopeNs;
if (elem)
xsltLREBuildEffectiveNsNodes(cctxt, item, elem, isLRE);
cctxt->inode->litResElemInfo = item;
cctxt->inode->nsChanged = 0;
cctxt->maxLREs++;
return(0);
}
/**
* xsltCompilerVarInfoPush:
* @cctxt: the compilation context
*
* Pushes a new var/param info onto the stack.
*
* Returns the acquired variable info.
*/
static xsltVarInfoPtr
xsltCompilerVarInfoPush(xsltCompilerCtxtPtr cctxt,
xmlNodePtr inst,
const xmlChar *name,
const xmlChar *nsName)
{
xsltVarInfoPtr ivar;
if ((cctxt->ivar != NULL) && (cctxt->ivar->next != NULL)) {
ivar = cctxt->ivar->next;
} else if ((cctxt->ivar == NULL) && (cctxt->ivars != NULL)) {
ivar = cctxt->ivars;
} else {
ivar = (xsltVarInfoPtr) xmlMalloc(sizeof(xsltVarInfo));
if (ivar == NULL) {
xsltTransformError(NULL, cctxt->style, inst,
"xsltParseInScopeVarPush: xmlMalloc() failed!\n");
cctxt->style->errors++;
return(NULL);
}
/* memset(retVar, 0, sizeof(xsltInScopeVar)); */
if (cctxt->ivars == NULL) {
cctxt->ivars = ivar;
ivar->prev = NULL;
} else {
cctxt->ivar->next = ivar;
ivar->prev = cctxt->ivar;
}
cctxt->ivar = ivar;
ivar->next = NULL;
}
ivar->depth = cctxt->depth;
ivar->name = name;
ivar->nsName = nsName;
return(ivar);
}
/**
* xsltCompilerVarInfoPop:
* @cctxt: the compilation context
*
* Pops all var/param infos from the stack, which
* have the current depth.
*/
static void
xsltCompilerVarInfoPop(xsltCompilerCtxtPtr cctxt)
{
while ((cctxt->ivar != NULL) &&
(cctxt->ivar->depth > cctxt->depth))
{
cctxt->ivar = cctxt->ivar->prev;
}
}
/*
* xsltCompilerNodePush:
*
* @cctxt: the compilation context
* @node: the node to be pushed (this can also be the doc-node)
*
*
*
* Returns the current node info structure or
* NULL in case of an internal error.
*/
static xsltCompilerNodeInfoPtr
xsltCompilerNodePush(xsltCompilerCtxtPtr cctxt, xmlNodePtr node)
{
xsltCompilerNodeInfoPtr inode, iprev;
if ((cctxt->inode != NULL) && (cctxt->inode->next != NULL)) {
inode = cctxt->inode->next;
} else if ((cctxt->inode == NULL) && (cctxt->inodeList != NULL)) {
inode = cctxt->inodeList;
} else {
/*
* Create a new node-info.
*/
inode = (xsltCompilerNodeInfoPtr)
xmlMalloc(sizeof(xsltCompilerNodeInfo));
if (inode == NULL) {
xsltTransformError(NULL, cctxt->style, NULL,
"xsltCompilerNodePush: malloc failed.\n");
return(NULL);
}
memset(inode, 0, sizeof(xsltCompilerNodeInfo));
if (cctxt->inodeList == NULL)
cctxt->inodeList = inode;
else {
cctxt->inodeLast->next = inode;
inode->prev = cctxt->inodeLast;
}
cctxt->inodeLast = inode;
cctxt->maxNodeInfos++;
if (cctxt->inode == NULL) {
cctxt->inode = inode;
/*
* Create an initial literal result element info for
* the root of the stylesheet.
*/
xsltLREInfoCreate(cctxt, NULL, 0);
}
}
cctxt->depth++;
cctxt->inode = inode;
/*
* REVISIT TODO: Keep the reset always complete.
* NOTE: Be carefull with the @node, since it might be
* a doc-node.
*/
inode->node = node;
inode->depth = cctxt->depth;
inode->templ = NULL;
inode->category = XSLT_ELEMENT_CATEGORY_XSLT;
inode->type = 0;
inode->item = NULL;
inode->curChildType = 0;
inode->extContentHandled = 0;
inode->isRoot = 0;
if (inode->prev != NULL) {
iprev = inode->prev;
/*
* Inherit the following information:
* ---------------------------------
*
* In-scope namespaces
*/
inode->inScopeNs = iprev->inScopeNs;
/*
* Info for literal result elements
*/
inode->litResElemInfo = iprev->litResElemInfo;
inode->nsChanged = iprev->nsChanged;
/*
* Excluded result namespaces
*/
inode->exclResultNs = iprev->exclResultNs;
/*
* Extension instruction namespaces
*/
inode->extElemNs = iprev->extElemNs;
/*
* Whitespace preservation
*/
inode->preserveWhitespace = iprev->preserveWhitespace;
/*
* Forwards-compatible mode
*/
inode->forwardsCompat = iprev->forwardsCompat;
} else {
inode->inScopeNs = NULL;
inode->exclResultNs = NULL;
inode->extElemNs = NULL;
inode->preserveWhitespace = 0;
inode->forwardsCompat = 0;
}
return(inode);
}
/*
* xsltCompilerNodePop:
*
* @cctxt: the compilation context
* @node: the node to be pushed (this can also be the doc-node)
*
* Pops the current node info.
*/
static void
xsltCompilerNodePop(xsltCompilerCtxtPtr cctxt, xmlNodePtr node)
{
if (cctxt->inode == NULL) {
xmlGenericError(xmlGenericErrorContext,
"xsltCompilerNodePop: Top-node mismatch.\n");
return;
}
/*
* NOTE: Be carefull with the @node, since it might be
* a doc-node.
*/
if (cctxt->inode->node != node) {
xmlGenericError(xmlGenericErrorContext,
"xsltCompilerNodePop: Node mismatch.\n");
goto mismatch;
}
if (cctxt->inode->depth != cctxt->depth) {
xmlGenericError(xmlGenericErrorContext,
"xsltCompilerNodePop: Depth mismatch.\n");
goto mismatch;
}
cctxt->depth--;
/*
* Pop information of variables.
*/
if ((cctxt->ivar) && (cctxt->ivar->depth > cctxt->depth))
xsltCompilerVarInfoPop(cctxt);
cctxt->inode = cctxt->inode->prev;
if (cctxt->inode != NULL)
cctxt->inode->curChildType = 0;
return;
mismatch:
{
const xmlChar *nsName = NULL, *name = NULL;
const xmlChar *infnsName = NULL, *infname = NULL;
if (node) {
if (node->type == XML_ELEMENT_NODE) {
name = node->name;
if (node->ns != NULL)
nsName = node->ns->href;
else
nsName = BAD_CAST "";
} else {
name = BAD_CAST "#document";
nsName = BAD_CAST "";
}
} else
name = BAD_CAST "Not given";
if (cctxt->inode->node) {
if (node->type == XML_ELEMENT_NODE) {
infname = cctxt->inode->node->name;
if (cctxt->inode->node->ns != NULL)
infnsName = cctxt->inode->node->ns->href;
else
infnsName = BAD_CAST "";
} else {
infname = BAD_CAST "#document";
infnsName = BAD_CAST "";
}
} else
infname = BAD_CAST "Not given";
xmlGenericError(xmlGenericErrorContext,
"xsltCompilerNodePop: Given : '%s' URI '%s'\n",
name, nsName);
xmlGenericError(xmlGenericErrorContext,
"xsltCompilerNodePop: Expected: '%s' URI '%s'\n",
infname, infnsName);
}
}
/*
* xsltCompilerBuildInScopeNsList:
*
* Create and store the list of in-scope namespaces for the given
* node in the stylesheet. If there are no changes in the in-scope
* namespaces then the last ns-info of the ancestor axis will be returned.
* Compilation-time only.
*
* Returns the ns-info or NULL if there are no namespaces in scope.
*/
static xsltNsListContainerPtr
xsltCompilerBuildInScopeNsList(xsltCompilerCtxtPtr cctxt, xmlNodePtr node)
{
xsltNsListContainerPtr nsi = NULL;
xmlNsPtr *list = NULL, ns;
int i, maxns = 5;
/*
* Create a new ns-list for this position in the node-tree.
* xmlGetNsList() will return NULL, if there are no ns-decls in the
* tree. Note that the ns-decl for the XML namespace is not added
* to the resulting list; the XPath module handles the XML namespace
* internally.
*/
while (node != NULL) {
if (node->type == XML_ELEMENT_NODE) {
ns = node->nsDef;
while (ns != NULL) {
if (nsi == NULL) {
nsi = (xsltNsListContainerPtr)
xmlMalloc(sizeof(xsltNsListContainer));
if (nsi == NULL) {
xsltTransformError(NULL, cctxt->style, NULL,
"xsltCompilerBuildInScopeNsList: "
"malloc failed!\n");
goto internal_err;
}
memset(nsi, 0, sizeof(xsltNsListContainer));
nsi->list =
(xmlNsPtr *) xmlMalloc(maxns * sizeof(xmlNsPtr));
if (nsi->list == NULL) {
xsltTransformError(NULL, cctxt->style, NULL,
"xsltCompilerBuildInScopeNsList: "
"malloc failed!\n");
goto internal_err;
}
nsi->list[0] = NULL;
}
/*
* Skip shadowed namespace bindings.
*/
for (i = 0; i < nsi->totalNumber; i++) {
if ((ns->prefix == nsi->list[i]->prefix) ||
(xmlStrEqual(ns->prefix, nsi->list[i]->prefix)))
break;
}
if (i >= nsi->totalNumber) {
if (nsi->totalNumber +1 >= maxns) {
maxns *= 2;
nsi->list =
(xmlNsPtr *) xmlRealloc(nsi->list,
maxns * sizeof(xmlNsPtr));
if (nsi->list == NULL) {
xsltTransformError(NULL, cctxt->style, NULL,
"xsltCompilerBuildInScopeNsList: "
"realloc failed!\n");
goto internal_err;
}
}
nsi->list[nsi->totalNumber++] = ns;
nsi->list[nsi->totalNumber] = NULL;
}
ns = ns->next;
}
}
node = node->parent;
}
if (nsi == NULL)
return(NULL);
/*
* Move the default namespace to last position.
*/
nsi->xpathNumber = nsi->totalNumber;
for (i = 0; i < nsi->totalNumber; i++) {
if (nsi->list[i]->prefix == NULL) {
ns = nsi->list[i];
nsi->list[i] = nsi->list[nsi->totalNumber-1];
nsi->list[nsi->totalNumber-1] = ns;
nsi->xpathNumber--;
break;
}
}
/*
* Store the ns-list in the stylesheet.
*/
if (xsltPointerListAddSize(
(xsltPointerListPtr)cctxt->psData->inScopeNamespaces,
(void *) nsi, 5) == -1)
{
xmlFree(nsi);
nsi = NULL;
xsltTransformError(NULL, cctxt->style, NULL,
"xsltCompilerBuildInScopeNsList: failed to add ns-info.\n");
goto internal_err;
}
/*
* Notify of change in status wrt namespaces.
*/
if (cctxt->inode != NULL)
cctxt->inode->nsChanged = 1;
return(nsi);
internal_err:
if (list != NULL)
xmlFree(list);
cctxt->style->errors++;
return(NULL);
}
static int
xsltParseNsPrefixList(xsltCompilerCtxtPtr cctxt,
xsltPointerListPtr list,
xmlNodePtr node,
const xmlChar *value)
{
xmlChar *cur, *end;
xmlNsPtr ns;
if ((cctxt == NULL) || (value == NULL) || (list == NULL))
return(-1);
list->number = 0;
cur = (xmlChar *) value;
while (*cur != 0) {
while (IS_BLANK(*cur)) cur++;
if (*cur == 0)
break;
end = cur;
while ((*end != 0) && (!IS_BLANK(*end))) end++;
cur = xmlStrndup(cur, end - cur);
if (cur == NULL) {
cur = end;
continue;
}
/*
* TODO: Export and use xmlSearchNsByPrefixStrict()
* in Libxml2, tree.c, since xmlSearchNs() is in most
* cases not efficient and in some cases not correct.
*
* XSLT-2 TODO: XSLT 2.0 allows an additional "#all" value.
*/
if ((cur[0] == '#') &&
xmlStrEqual(cur, (const xmlChar *)"#default"))
ns = xmlSearchNs(cctxt->style->doc, node, NULL);
else
ns = xmlSearchNs(cctxt->style->doc, node, cur);
if (ns == NULL) {
/*
* TODO: Better to report the attr-node, otherwise
* the user won't know which attribute was invalid.
*/
xsltTransformError(NULL, cctxt->style, node,
"No namespace binding in scope for prefix '%s'.\n", cur);
/*
* XSLT-1.0: "It is an error if there is no namespace
* bound to the prefix on the element bearing the
* exclude-result-prefixes or xsl:exclude-result-prefixes
* attribute."
*/
cctxt->style->errors++;
} else {
#ifdef WITH_XSLT_DEBUG_PARSING
xsltGenericDebug(xsltGenericDebugContext,
"resolved prefix '%s'\n", cur);
#endif
/*
* Note that we put the namespace name into the dict.
*/
if (xsltPointerListAddSize(list,
(void *) xmlDictLookup(cctxt->style->dict,
ns->href, -1), 5) == -1)
{
xmlFree(cur);
goto internal_err;
}
}
xmlFree(cur);
cur = end;
}
return(0);
internal_err:
cctxt->style->errors++;
return(-1);
}
/**
* xsltCompilerUtilsCreateMergedList:
* @dest: the destination list (optional)
* @first: the first list
* @second: the second list (optional)
*
* Appends the content of @second to @first into @destination.
* If @destination is NULL a new list will be created.
*
* Returns the merged list of items or NULL if there's nothing to merge.
*/
static xsltPointerListPtr
xsltCompilerUtilsCreateMergedList(xsltPointerListPtr first,
xsltPointerListPtr second)
{
xsltPointerListPtr ret;
size_t num;
if (first)
num = first->number;
else
num = 0;
if (second)
num += second->number;
if (num == 0)
return(NULL);
ret = xsltPointerListCreate(num);
if (ret == NULL)
return(NULL);
/*
* Copy contents.
*/
if ((first != NULL) && (first->number != 0)) {
memcpy(ret->items, first->items,
first->number * sizeof(void *));
if ((second != NULL) && (second->number != 0))
memcpy(ret->items + first->number, second->items,
second->number * sizeof(void *));
} else if ((second != NULL) && (second->number != 0))
memcpy(ret->items, (void *) second->items,
second->number * sizeof(void *));
ret->number = num;
return(ret);
}
/*
* xsltParseExclResultPrefixes:
*
* Create and store the list of in-scope namespaces for the given
* node in the stylesheet. If there are no changes in the in-scope
* namespaces then the last ns-info of the ancestor axis will be returned.
* Compilation-time only.
*
* Returns the ns-info or NULL if there are no namespaces in scope.
*/
static xsltPointerListPtr
xsltParseExclResultPrefixes(xsltCompilerCtxtPtr cctxt, xmlNodePtr node,
xsltPointerListPtr def,
int instrCategory)
{
xsltPointerListPtr list = NULL;
xmlChar *value;
xmlAttrPtr attr;
if ((cctxt == NULL) || (node == NULL))
return(NULL);
if (instrCategory == XSLT_ELEMENT_CATEGORY_XSLT)
attr = xmlHasNsProp(node, BAD_CAST "exclude-result-prefixes", NULL);
else
attr = xmlHasNsProp(node, BAD_CAST "exclude-result-prefixes",
XSLT_NAMESPACE);
if (attr == NULL)
return(def);
if (attr && (instrCategory == XSLT_ELEMENT_CATEGORY_LRE)) {
/*
* Mark the XSLT attr.
*/
attr->psvi = (void *) xsltXSLTAttrMarker;
}
if ((attr->children != NULL) &&
(attr->children->content != NULL))
value = attr->children->content;
else {
xsltTransformError(NULL, cctxt->style, node,
"Attribute 'exclude-result-prefixes': Invalid value.\n");
cctxt->style->errors++;
return(def);
}
if (xsltParseNsPrefixList(cctxt, cctxt->tmpList, node,
BAD_CAST value) != 0)
goto exit;
if (cctxt->tmpList->number == 0)
goto exit;
/*
* Merge the list with the inherited list.
*/
list = xsltCompilerUtilsCreateMergedList(def, cctxt->tmpList);
if (list == NULL)
goto exit;
/*
* Store the list in the stylesheet/compiler context.
*/
if (xsltPointerListAddSize(
cctxt->psData->exclResultNamespaces, list, 5) == -1)
{
xsltPointerListFree(list);
list = NULL;
goto exit;
}
/*
* Notify of change in status wrt namespaces.
*/
if (cctxt->inode != NULL)
cctxt->inode->nsChanged = 1;
exit:
if (list != NULL)
return(list);
else
return(def);
}
/*
* xsltParseExtElemPrefixes:
*
* Create and store the list of in-scope namespaces for the given
* node in the stylesheet. If there are no changes in the in-scope
* namespaces then the last ns-info of the ancestor axis will be returned.
* Compilation-time only.
*
* Returns the ns-info or NULL if there are no namespaces in scope.
*/
static xsltPointerListPtr
xsltParseExtElemPrefixes(xsltCompilerCtxtPtr cctxt, xmlNodePtr node,
xsltPointerListPtr def,
int instrCategory)
{
xsltPointerListPtr list = NULL;
xmlAttrPtr attr;
xmlChar *value;
int i;
if ((cctxt == NULL) || (node == NULL))
return(NULL);
if (instrCategory == XSLT_ELEMENT_CATEGORY_XSLT)
attr = xmlHasNsProp(node, BAD_CAST "extension-element-prefixes", NULL);
else
attr = xmlHasNsProp(node, BAD_CAST "extension-element-prefixes",
XSLT_NAMESPACE);
if (attr == NULL)
return(def);
if (attr && (instrCategory == XSLT_ELEMENT_CATEGORY_LRE)) {
/*
* Mark the XSLT attr.
*/
attr->psvi = (void *) xsltXSLTAttrMarker;
}
if ((attr->children != NULL) &&
(attr->children->content != NULL))
value = attr->children->content;
else {
xsltTransformError(NULL, cctxt->style, node,
"Attribute 'extension-element-prefixes': Invalid value.\n");
cctxt->style->errors++;
return(def);
}
if (xsltParseNsPrefixList(cctxt, cctxt->tmpList, node,
BAD_CAST value) != 0)
goto exit;
if (cctxt->tmpList->number == 0)
goto exit;
/*
* REVISIT: Register the extension namespaces.
*/
for (i = 0; i < cctxt->tmpList->number; i++)
xsltRegisterExtPrefix(cctxt->style, NULL,
BAD_CAST cctxt->tmpList->items[i]);
/*
* Merge the list with the inherited list.
*/
list = xsltCompilerUtilsCreateMergedList(def, cctxt->tmpList);
if (list == NULL)
goto exit;
/*
* Store the list in the stylesheet.
*/
if (xsltPointerListAddSize(
cctxt->psData->extElemNamespaces, list, 5) == -1)
{
xsltPointerListFree(list);
list = NULL;
goto exit;
}
/*
* Notify of change in status wrt namespaces.
*/
if (cctxt->inode != NULL)
cctxt->inode->nsChanged = 1;
exit:
if (list != NULL)
return(list);
else
return(def);
}
/*
* xsltParseAttrXSLTVersion:
*
* @cctxt: the compilation context
* @node: the element-node
* @isXsltElem: whether this is an XSLT element
*
* Parses the attribute xsl:version.
*
* Returns 1 if there was such an attribute, 0 if not and
* -1 if an internal or API error occured.
*/
static int
xsltParseAttrXSLTVersion(xsltCompilerCtxtPtr cctxt, xmlNodePtr node,
int instrCategory)
{
xmlChar *value;
xmlAttrPtr attr;
if ((cctxt == NULL) || (node == NULL))
return(-1);
if (instrCategory == XSLT_ELEMENT_CATEGORY_XSLT)
attr = xmlHasNsProp(node, BAD_CAST "version", NULL);
else
attr = xmlHasNsProp(node, BAD_CAST "version", XSLT_NAMESPACE);
if (attr == NULL)
return(0);
attr->psvi = (void *) xsltXSLTAttrMarker;
if ((attr->children != NULL) &&
(attr->children->content != NULL))
value = attr->children->content;
else {
xsltTransformError(NULL, cctxt->style, node,
"Attribute 'version': Invalid value.\n");
cctxt->style->errors++;
return(1);
}
if (! xmlStrEqual(value, (const xmlChar *)"1.0")) {
cctxt->inode->forwardsCompat = 1;
/*
* TODO: To what extent do we support the
* forwards-compatible mode?
*/
/*
* Report this only once per compilation episode.
*/
if (! cctxt->hasForwardsCompat) {
cctxt->hasForwardsCompat = 1;
cctxt->errSeverity = XSLT_ERROR_SEVERITY_WARNING;
xsltTransformError(NULL, cctxt->style, node,
"Warning: the attribute xsl:version specifies a value "
"different from '1.0'. Switching to forwards-compatible "
"mode. Only features of XSLT 1.0 are supported by this "
"processor.\n");
cctxt->style->warnings++;
cctxt->errSeverity = XSLT_ERROR_SEVERITY_ERROR;
}
} else {
cctxt->inode->forwardsCompat = 0;
}
if (attr && (instrCategory == XSLT_ELEMENT_CATEGORY_LRE)) {
/*
* Set a marker on XSLT attributes.
*/
attr->psvi = (void *) xsltXSLTAttrMarker;
}
return(1);
}
static int
xsltParsePreprocessStylesheetTree(xsltCompilerCtxtPtr cctxt, xmlNodePtr node)
{
xmlNodePtr deleteNode, cur, txt, textNode = NULL;
xmlDocPtr doc;
xsltStylesheetPtr style;
int internalize = 0, findSpaceAttr;
int xsltStylesheetElemDepth;
xmlAttrPtr attr;
xmlChar *value;
const xmlChar *name, *nsNameXSLT = NULL;
int strictWhitespace, inXSLText = 0;
#ifdef XSLT_REFACTORED_XSLT_NSCOMP
xsltNsMapPtr nsMapItem;
#endif
if ((cctxt == NULL) || (cctxt->style == NULL) ||
(node == NULL) || (node->type != XML_ELEMENT_NODE))
return(-1);
doc = node->doc;
if (doc == NULL)
goto internal_err;
style = cctxt->style;
if ((style->dict != NULL) && (doc->dict == style->dict))
internalize = 1;
else
style->internalized = 0;
/*
* Init value of xml:space. Since this might be an embedded
* stylesheet, this is needed to be performed on the element
* where the stylesheet is rooted at, taking xml:space of
* ancestors into account.
*/
if (! cctxt->simplified)
xsltStylesheetElemDepth = cctxt->depth +1;
else
xsltStylesheetElemDepth = 0;
if (xmlNodeGetSpacePreserve(node) != 1)
cctxt->inode->preserveWhitespace = 0;
else
cctxt->inode->preserveWhitespace = 1;
/*
* Eval if we should keep the old incorrect behaviour.
*/
strictWhitespace = (cctxt->strict != 0) ? 1 : 0;
nsNameXSLT = xsltConstNamespaceNameXSLT;
deleteNode = NULL;
cur = node;
while (cur != NULL) {
if (deleteNode != NULL) {
#ifdef WITH_XSLT_DEBUG_BLANKS
xsltGenericDebug(xsltGenericDebugContext,
"xsltParsePreprocessStylesheetTree: removing node\n");
#endif
xmlUnlinkNode(deleteNode);
xmlFreeNode(deleteNode);
deleteNode = NULL;
}
if (cur->type == XML_ELEMENT_NODE) {
/*
* Clear the PSVI field.
*/
cur->psvi = NULL;
xsltCompilerNodePush(cctxt, cur);
inXSLText = 0;
textNode = NULL;
findSpaceAttr = 1;
cctxt->inode->stripWhitespace = 0;
/*
* TODO: I'd love to use a string pointer comparison here :-/
*/
if (IS_XSLT_ELEM(cur)) {
#ifdef XSLT_REFACTORED_XSLT_NSCOMP
if (cur->ns->href != nsNameXSLT) {
nsMapItem = xsltNewNamespaceMapItem(cctxt,
doc, cur->ns, cur);
if (nsMapItem == NULL)
goto internal_err;
cur->ns->href = nsNameXSLT;
}
#endif
if (cur->name == NULL)
goto process_attributes;
/*
* Mark the XSLT element for later recognition.
* TODO: Using the marker is still too dangerous, since if
* the parsing mechanism leaves out an XSLT element, then
* this might hit the transformation-mechanism, which
* will break if it doesn't expect such a marker.
*/
/* cur->psvi = (void *) xsltXSLTElemMarker; */
/*
* XSLT 2.0: "Any whitespace text node whose parent is
* one of the following elements is removed from the "
* tree, regardless of any xml:space attributes:..."
* xsl:apply-imports,
* xsl:apply-templates,
* xsl:attribute-set,
* xsl:call-template,
* xsl:choose,
* xsl:stylesheet, xsl:transform.
* XSLT 2.0: xsl:analyze-string,
* xsl:character-map,
* xsl:next-match
*
* TODO: I'd love to use a string pointer comparison here :-/
*/
name = cur->name;
switch (*name) {
case 't':
if ((name[0] == 't') && (name[1] == 'e') &&
(name[2] == 'x') && (name[3] == 't') &&
(name[4] == 0))
{
/*
* Process the xsl:text element.
* ----------------------------
* Mark it for later recognition.
*/
cur->psvi = (void *) xsltXSLTTextMarker;
/*
* For stylesheets, the set of
* whitespace-preserving element names
* consists of just xsl:text.
*/
findSpaceAttr = 0;
cctxt->inode->preserveWhitespace = 1;
inXSLText = 1;
}
break;
case 'c':
if (xmlStrEqual(name, BAD_CAST "choose") ||
xmlStrEqual(name, BAD_CAST "call-template"))
cctxt->inode->stripWhitespace = 1;
break;
case 'a':
if (xmlStrEqual(name, BAD_CAST "apply-templates") ||
xmlStrEqual(name, BAD_CAST "apply-imports") ||
xmlStrEqual(name, BAD_CAST "attribute-set"))
cctxt->inode->stripWhitespace = 1;
break;
default:
if (xsltStylesheetElemDepth == cctxt->depth) {
/*
* This is a xsl:stylesheet/xsl:transform.
*/
cctxt->inode->stripWhitespace = 1;
break;
}
if ((cur->prev != NULL) &&
(cur->prev->type == XML_TEXT_NODE))
{
/*
* XSLT 2.0 : "Any whitespace text node whose
* following-sibling node is an xsl:param or
* xsl:sort element is removed from the tree,
* regardless of any xml:space attributes."
*/
if (((*name == 'p') || (*name == 's')) &&
(xmlStrEqual(name, BAD_CAST "param") ||
xmlStrEqual(name, BAD_CAST "sort")))
{
do {
if (IS_BLANK_NODE(cur->prev)) {
txt = cur->prev;
xmlUnlinkNode(txt);
xmlFreeNode(txt);
} else {
/*
* This will result in a content
* error, when hitting the parsing
* functions.
*/
break;
}
} while (cur->prev);
}
}
break;
}
}
process_attributes:
/*
* Process attributes.
* ------------------
*/
if (cur->properties != NULL) {
if (cur->children == NULL)
findSpaceAttr = 0;
attr = cur->properties;
do {
#ifdef XSLT_REFACTORED_XSLT_NSCOMP
if ((attr->ns) && (attr->ns->href != nsNameXSLT) &&
xmlStrEqual(attr->ns->href, nsNameXSLT))
{
nsMapItem = xsltNewNamespaceMapItem(cctxt,
doc, attr->ns, cur);
if (nsMapItem == NULL)
goto internal_err;
attr->ns->href = nsNameXSLT;
}
#endif
if (internalize) {
/*
* Internalize the attribute's value; the goal is to
* speed up operations and minimize used space by
* compiled stylesheets.
*/
txt = attr->children;
/*
* NOTE that this assumes only one
* text-node in the attribute's content.
*/
if ((txt != NULL) && (txt->content != NULL) &&
(!xmlDictOwns(style->dict, txt->content)))
{
value = (xmlChar *) xmlDictLookup(style->dict,
txt->content, -1);
xmlNodeSetContent(txt, NULL);
txt->content = value;
}
}
/*
* Process xml:space attributes.
* ----------------------------
*/
if ((findSpaceAttr != 0) &&
(attr->ns != NULL) &&
(attr->name != NULL) &&
(attr->name[0] == 's') &&
(attr->ns->prefix != NULL) &&
(attr->ns->prefix[0] == 'x') &&
(attr->ns->prefix[1] == 'm') &&
(attr->ns->prefix[2] == 'l') &&
(attr->ns->prefix[3] == 0))
{
value = xmlGetNsProp(cur, BAD_CAST "space",
XML_XML_NAMESPACE);
if (value != NULL) {
if (xmlStrEqual(value, BAD_CAST "preserve")) {
cctxt->inode->preserveWhitespace = 1;
} else if (xmlStrEqual(value, BAD_CAST "default")) {
cctxt->inode->preserveWhitespace = 0;
} else {
/* Invalid value for xml:space. */
xsltTransformError(NULL, style, cur,
"Attribute xml:space: Invalid value.\n");
cctxt->style->warnings++;
}
findSpaceAttr = 0;
xmlFree(value);
}
}
attr = attr->next;
} while (attr != NULL);
}
/*
* We'll descend into the children of element nodes only.
*/
if (cur->children != NULL) {
cur = cur->children;
continue;
}
} else if ((cur->type == XML_TEXT_NODE) ||
(cur->type == XML_CDATA_SECTION_NODE))
{
/*
* Merge adjacent text/CDATA-section-nodes
* ---------------------------------------
* In order to avoid breaking of existing stylesheets,
* if the old behaviour is wanted (strictWhitespace == 0),
* then we *won't* merge adjacent text-nodes
* (except in xsl:text); this will ensure that whitespace-only
* text nodes are (incorrectly) not stripped in some cases.
*
* Example: : <foo> <!-- bar -->zoo</foo>
* Corrent (strict) result: <foo> zoo</foo>
* Incorrect (old) result : <foo>zoo</foo>
*
* NOTE that we *will* merge adjacent text-nodes if
* they are in xsl:text.
* Example, the following:
* <xsl:text> <!-- bar -->zoo<xsl:text>
* will result in both cases in:
* <xsl:text> zoo<xsl:text>
*/
cur->type = XML_TEXT_NODE;
if ((strictWhitespace != 0) || (inXSLText != 0)) {
/*
* New behaviour; merge nodes.
*/
if (textNode == NULL)
textNode = cur;
else {
if (cur->content != NULL)
xmlNodeAddContent(textNode, cur->content);
deleteNode = cur;
}
if ((cur->next == NULL) ||
(cur->next->type == XML_ELEMENT_NODE))
goto end_of_text;
else
goto next_sibling;
} else {
/*
* Old behaviour.
*/
if (textNode == NULL)
textNode = cur;
goto end_of_text;
}
} else if ((cur->type == XML_COMMENT_NODE) ||
(cur->type == XML_PI_NODE))
{
/*
* Remove processing instructions and comments.
*/
deleteNode = cur;
if ((cur->next == NULL) ||
(cur->next->type == XML_ELEMENT_NODE))
goto end_of_text;
else
goto next_sibling;
} else {
textNode = NULL;
/*
* Invalid node-type for this data-model.
*/
xsltTransformError(NULL, style, cur,
"Invalid type of node for the XSLT data model.\n");
cctxt->style->errors++;
goto next_sibling;
}
end_of_text:
if (textNode) {
value = textNode->content;
/*
* At this point all adjacent text/CDATA-section nodes
* have been merged.
*
* Strip whitespace-only text-nodes.
* (cctxt->inode->stripWhitespace)
*/
if ((value == NULL) || (*value == 0) ||
(((cctxt->inode->stripWhitespace) ||
(! cctxt->inode->preserveWhitespace)) &&
IS_BLANK(*value) &&
xsltIsBlank(value)))
{
if (textNode != cur) {
xmlUnlinkNode(textNode);
xmlFreeNode(textNode);
} else
deleteNode = textNode;
textNode = NULL;
goto next_sibling;
}
/*
* Convert CDATA-section nodes to text-nodes.
* TODO: Can this produce problems?
*/
if (textNode->type != XML_TEXT_NODE) {
textNode->type = XML_TEXT_NODE;
textNode->name = xmlStringText;
}
if (internalize &&
(textNode->content != NULL) &&
(!xmlDictOwns(style->dict, textNode->content)))
{
/*
* Internalize the string.
*/
value = (xmlChar *) xmlDictLookup(style->dict,
textNode->content, -1);
xmlNodeSetContent(textNode, NULL);
textNode->content = value;
}
textNode = NULL;
/*
* Note that "disable-output-escaping" of the xsl:text
* element will be applied at a later level, when
* XSLT elements are processed.
*/
}
next_sibling:
if (cur->type == XML_ELEMENT_NODE) {
xsltCompilerNodePop(cctxt, cur);
}
if (cur == node)
break;
if (cur->next != NULL) {
cur = cur->next;
} else {
cur = cur->parent;
inXSLText = 0;
goto next_sibling;
};
}
if (deleteNode != NULL) {
#ifdef WITH_XSLT_DEBUG_PARSING
xsltGenericDebug(xsltGenericDebugContext,
"xsltParsePreprocessStylesheetTree: removing node\n");
#endif
xmlUnlinkNode(deleteNode);
xmlFreeNode(deleteNode);
}
return(0);
internal_err:
return(-1);
}
#endif /* XSLT_REFACTORED */
#ifdef XSLT_REFACTORED
#else
static void
xsltPrecomputeStylesheet(xsltStylesheetPtr style, xmlNodePtr cur)
{
xmlNodePtr deleteNode, styleelem;
int internalize = 0;
if ((style == NULL) || (cur == NULL))
return;
if ((cur->doc != NULL) && (style->dict != NULL) &&
(cur->doc->dict == style->dict))
internalize = 1;
else
style->internalized = 0;
if ((cur != NULL) && (IS_XSLT_ELEM(cur)) &&
(IS_XSLT_NAME(cur, "stylesheet"))) {
styleelem = cur;
} else {
styleelem = NULL;
}
/*
* This content comes from the stylesheet
* For stylesheets, the set of whitespace-preserving
* element names consists of just xsl:text.
*/
deleteNode = NULL;
while (cur != NULL) {
if (deleteNode != NULL) {
#ifdef WITH_XSLT_DEBUG_BLANKS
xsltGenericDebug(xsltGenericDebugContext,
"xsltPrecomputeStylesheet: removing ignorable blank node\n");
#endif
xmlUnlinkNode(deleteNode);
xmlFreeNode(deleteNode);
deleteNode = NULL;
}
if (cur->type == XML_ELEMENT_NODE) {
int exclPrefixes;
/*
* Internalize attributes values.
*/
if ((internalize) && (cur->properties != NULL)) {
xmlAttrPtr attr = cur->properties;
xmlNodePtr txt;
while (attr != NULL) {
txt = attr->children;
if ((txt != NULL) && (txt->type == XML_TEXT_NODE) &&
(txt->content != NULL) &&
(!xmlDictOwns(style->dict, txt->content)))
{
xmlChar *tmp;
/*
* internalize the text string, goal is to speed
* up operations and minimize used space by compiled
* stylesheets.
*/
tmp = (xmlChar *) xmlDictLookup(style->dict,
txt->content, -1);
if (tmp != txt->content) {
xmlNodeSetContent(txt, NULL);
txt->content = tmp;
}
}
attr = attr->next;
}
}
if (IS_XSLT_ELEM(cur)) {
exclPrefixes = 0;
xsltStylePreCompute(style, cur);
if (IS_XSLT_NAME(cur, "text")) {
for (;exclPrefixes > 0;exclPrefixes--)
exclPrefixPop(style);
goto skip_children;
}
} else {
exclPrefixes = xsltParseStylesheetExcludePrefix(style, cur, 0);
}
if ((cur->nsDef != NULL) && (style->exclPrefixNr > 0)) {
xmlNsPtr ns = cur->nsDef, prev = NULL, next;
xmlNodePtr root = NULL;
int i, moved;
root = xmlDocGetRootElement(cur->doc);
if ((root != NULL) && (root != cur)) {
while (ns != NULL) {
moved = 0;
next = ns->next;
for (i = 0;i < style->exclPrefixNr;i++) {
if ((ns->prefix != NULL) &&
(xmlStrEqual(ns->href,
style->exclPrefixTab[i]))) {
/*
* Move the namespace definition on the root
* element to avoid duplicating it without
* loosing it.
*/
if (prev == NULL) {
cur->nsDef = ns->next;
} else {
prev->next = ns->next;
}
ns->next = root->nsDef;
root->nsDef = ns;
moved = 1;
break;
}
}
if (moved == 0)
prev = ns;
ns = next;
}
}
}
/*
* If we have prefixes locally, recurse and pop them up when
* going back
*/
if (exclPrefixes > 0) {
xsltPrecomputeStylesheet(style, cur->children);
for (;exclPrefixes > 0;exclPrefixes--)
exclPrefixPop(style);
goto skip_children;
}
} else if (cur->type == XML_TEXT_NODE) {
if (IS_BLANK_NODE(cur)) {
if (xmlNodeGetSpacePreserve(cur->parent) != 1) {
deleteNode = cur;
}
} else if ((cur->content != NULL) && (internalize) &&
(!xmlDictOwns(style->dict, cur->content))) {
xmlChar *tmp;
/*
* internalize the text string, goal is to speed
* up operations and minimize used space by compiled
* stylesheets.
*/
tmp = (xmlChar *) xmlDictLookup(style->dict, cur->content, -1);
xmlNodeSetContent(cur, NULL);
cur->content = tmp;
}
} else if ((cur->type != XML_ELEMENT_NODE) &&
(cur->type != XML_CDATA_SECTION_NODE)) {
deleteNode = cur;
goto skip_children;
}
/*
* Skip to next node. In case of a namespaced element children of
* the stylesheet and not in the XSLT namespace and not an extension
* element, ignore its content.
*/
if ((cur->type == XML_ELEMENT_NODE) && (cur->ns != NULL) &&
(styleelem != NULL) && (cur->parent == styleelem) &&
(!xmlStrEqual(cur->ns->href, XSLT_NAMESPACE)) &&
(!xsltCheckExtURI(style, cur->ns->href))) {
goto skip_children;
} else if (cur->children != NULL) {
if ((cur->children->type != XML_ENTITY_DECL) &&
(cur->children->type != XML_ENTITY_REF_NODE) &&
(cur->children->type != XML_ENTITY_NODE)) {
cur = cur->children;
continue;
}
}
skip_children:
if (cur->next != NULL) {
cur = cur->next;
continue;
}
do {
cur = cur->parent;
if (cur == NULL)
break;
if (cur == (xmlNodePtr) style->doc) {
cur = NULL;
break;
}
if (cur->next != NULL) {
cur = cur->next;
break;
}
} while (cur != NULL);
}
if (deleteNode != NULL) {
#ifdef WITH_XSLT_DEBUG_PARSING
xsltGenericDebug(xsltGenericDebugContext,
"xsltPrecomputeStylesheet: removing ignorable blank node\n");
#endif
xmlUnlinkNode(deleteNode);
xmlFreeNode(deleteNode);
}
}
#endif /* end of else XSLT_REFACTORED */
/**
* xsltGatherNamespaces:
* @style: the XSLT stylesheet
*
* Browse the stylesheet and build the namspace hash table which
* will be used for XPath interpretation. If needed do a bit of normalization
*/
static void
xsltGatherNamespaces(xsltStylesheetPtr style) {
xmlNodePtr cur;
const xmlChar *URI;
if (style == NULL)
return;
/*
* TODO: basically if the stylesheet uses the same prefix for different
* patterns, well they may be in problem, hopefully they will get
* a warning first.
*/
/*
* TODO: Eliminate the use of the hash for XPath expressions.
* An expression should be evaluated in the context of the in-scope
* namespaces; eliminate the restriction of an XML document to contain
* no duplicate prefixes for different namespace names.
*
*/
cur = xmlDocGetRootElement(style->doc);
while (cur != NULL) {
if (cur->type == XML_ELEMENT_NODE) {
xmlNsPtr ns = cur->nsDef;
while (ns != NULL) {
if (ns->prefix != NULL) {
if (style->nsHash == NULL) {
style->nsHash = xmlHashCreate(10);
if (style->nsHash == NULL) {
xsltTransformError(NULL, style, cur,
"xsltGatherNamespaces: failed to create hash table\n");
style->errors++;
return;
}
}
URI = xmlHashLookup(style->nsHash, ns->prefix);
if ((URI != NULL) && (!xmlStrEqual(URI, ns->href))) {
xsltTransformError(NULL, style, cur,
"Namespaces prefix %s used for multiple namespaces\n",ns->prefix);
style->warnings++;
} else if (URI == NULL) {
xmlHashUpdateEntry(style->nsHash, ns->prefix,
(void *) ns->href, (xmlHashDeallocator)xmlFree);
#ifdef WITH_XSLT_DEBUG_PARSING
xsltGenericDebug(xsltGenericDebugContext,
"Added namespace: %s mapped to %s\n", ns->prefix, ns->href);
#endif
}
}
ns = ns->next;
}
}
/*
* Skip to next node
*/
if (cur->children != NULL) {
if (cur->children->type != XML_ENTITY_DECL) {
cur = cur->children;
continue;
}
}
if (cur->next != NULL) {
cur = cur->next;
continue;
}
do {
cur = cur->parent;
if (cur == NULL)
break;
if (cur == (xmlNodePtr) style->doc) {
cur = NULL;
break;
}
if (cur->next != NULL) {
cur = cur->next;
break;
}
} while (cur != NULL);
}
}
#ifdef XSLT_REFACTORED
static xsltStyleType
xsltGetXSLTElementTypeByNode(xsltCompilerCtxtPtr cctxt,
xmlNodePtr node)
{
if ((node == NULL) || (node->type != XML_ELEMENT_NODE) ||
(node->name == NULL))
return(0);
if (node->name[0] == 'a') {
if (IS_XSLT_NAME(node, "apply-templates"))
return(XSLT_FUNC_APPLYTEMPLATES);
else if (IS_XSLT_NAME(node, "attribute"))
return(XSLT_FUNC_ATTRIBUTE);
else if (IS_XSLT_NAME(node, "apply-imports"))
return(XSLT_FUNC_APPLYIMPORTS);
else if (IS_XSLT_NAME(node, "attribute-set"))
return(0);
} else if (node->name[0] == 'c') {
if (IS_XSLT_NAME(node, "choose"))
return(XSLT_FUNC_CHOOSE);
else if (IS_XSLT_NAME(node, "copy"))
return(XSLT_FUNC_COPY);
else if (IS_XSLT_NAME(node, "copy-of"))
return(XSLT_FUNC_COPYOF);
else if (IS_XSLT_NAME(node, "call-template"))
return(XSLT_FUNC_CALLTEMPLATE);
else if (IS_XSLT_NAME(node, "comment"))
return(XSLT_FUNC_COMMENT);
} else if (node->name[0] == 'd') {
if (IS_XSLT_NAME(node, "document"))
return(XSLT_FUNC_DOCUMENT);
else if (IS_XSLT_NAME(node, "decimal-format"))
return(0);
} else if (node->name[0] == 'e') {
if (IS_XSLT_NAME(node, "element"))
return(XSLT_FUNC_ELEMENT);
} else if (node->name[0] == 'f') {
if (IS_XSLT_NAME(node, "for-each"))
return(XSLT_FUNC_FOREACH);
else if (IS_XSLT_NAME(node, "fallback"))
return(XSLT_FUNC_FALLBACK);
} else if (*(node->name) == 'i') {
if (IS_XSLT_NAME(node, "if"))
return(XSLT_FUNC_IF);
else if (IS_XSLT_NAME(node, "include"))
return(0);
else if (IS_XSLT_NAME(node, "import"))
return(0);
} else if (*(node->name) == 'k') {
if (IS_XSLT_NAME(node, "key"))
return(0);
} else if (*(node->name) == 'm') {
if (IS_XSLT_NAME(node, "message"))
return(XSLT_FUNC_MESSAGE);
} else if (*(node->name) == 'n') {
if (IS_XSLT_NAME(node, "number"))
return(XSLT_FUNC_NUMBER);
else if (IS_XSLT_NAME(node, "namespace-alias"))
return(0);
} else if (*(node->name) == 'o') {
if (IS_XSLT_NAME(node, "otherwise"))
return(XSLT_FUNC_OTHERWISE);
else if (IS_XSLT_NAME(node, "output"))
return(0);
} else if (*(node->name) == 'p') {
if (IS_XSLT_NAME(node, "param"))
return(XSLT_FUNC_PARAM);
else if (IS_XSLT_NAME(node, "processing-instruction"))
return(XSLT_FUNC_PI);
else if (IS_XSLT_NAME(node, "preserve-space"))
return(0);
} else if (*(node->name) == 's') {
if (IS_XSLT_NAME(node, "sort"))
return(XSLT_FUNC_SORT);
else if (IS_XSLT_NAME(node, "strip-space"))
return(0);
else if (IS_XSLT_NAME(node, "stylesheet"))
return(0);
} else if (node->name[0] == 't') {
if (IS_XSLT_NAME(node, "text"))
return(XSLT_FUNC_TEXT);
else if (IS_XSLT_NAME(node, "template"))
return(0);
else if (IS_XSLT_NAME(node, "transform"))
return(0);
} else if (*(node->name) == 'v') {
if (IS_XSLT_NAME(node, "value-of"))
return(XSLT_FUNC_VALUEOF);
else if (IS_XSLT_NAME(node, "variable"))
return(XSLT_FUNC_VARIABLE);
} else if (*(node->name) == 'w') {
if (IS_XSLT_NAME(node, "when"))
return(XSLT_FUNC_WHEN);
if (IS_XSLT_NAME(node, "with-param"))
return(XSLT_FUNC_WITHPARAM);
}
return(0);
}
/**
* xsltParseAnyXSLTElem:
*
* @cctxt: the compilation context
* @elem: the element node of the XSLT instruction
*
* Parses, validates the content models and compiles XSLT instructions.
*
* Returns 0 if everything's fine;
* -1 on API or internal errors.
*/
int
xsltParseAnyXSLTElem(xsltCompilerCtxtPtr cctxt, xmlNodePtr elem)
{
if ((cctxt == NULL) || (elem == NULL) ||
(elem->type != XML_ELEMENT_NODE))
return(-1);
elem->psvi = NULL;
if (! (IS_XSLT_ELEM_FAST(elem)))
return(-1);
/*
* Detection of handled content of extension instructions.
*/
if (cctxt->inode->category == XSLT_ELEMENT_CATEGORY_EXTENSION) {
cctxt->inode->extContentHandled = 1;
}
xsltCompilerNodePush(cctxt, elem);
/*
* URGENT TODO: Find a way to speed up this annoying redundant
* textual node-name and namespace comparison.
*/
if (cctxt->inode->prev->curChildType != 0)
cctxt->inode->type = cctxt->inode->prev->curChildType;
else
cctxt->inode->type = xsltGetXSLTElementTypeByNode(cctxt, elem);
/*
* Update the in-scope namespaces if needed.
*/
if (elem->nsDef != NULL)
cctxt->inode->inScopeNs =
xsltCompilerBuildInScopeNsList(cctxt, elem);
/*
* xsltStylePreCompute():
* This will compile the information found on the current
* element's attributes. NOTE that this won't process the
* children of the instruction.
*/
xsltStylePreCompute(cctxt->style, elem);
/*
* TODO: How to react on errors in xsltStylePreCompute() ?
*/
/*
* Validate the content model of the XSLT-element.
*/
switch (cctxt->inode->type) {
case XSLT_FUNC_APPLYIMPORTS:
/* EMPTY */
goto empty_content;
case XSLT_FUNC_APPLYTEMPLATES:
/* <!-- Content: (xsl:sort | xsl:with-param)* --> */
goto apply_templates;
case XSLT_FUNC_ATTRIBUTE:
/* <!-- Content: template --> */
goto sequence_constructor;
case XSLT_FUNC_CALLTEMPLATE:
/* <!-- Content: xsl:with-param* --> */
goto call_template;
case XSLT_FUNC_CHOOSE:
/* <!-- Content: (xsl:when+, xsl:otherwise?) --> */
goto choose;
case XSLT_FUNC_COMMENT:
/* <!-- Content: template --> */
goto sequence_constructor;
case XSLT_FUNC_COPY:
/* <!-- Content: template --> */
goto sequence_constructor;
case XSLT_FUNC_COPYOF:
/* EMPTY */
goto empty_content;
case XSLT_FUNC_DOCUMENT: /* Extra one */
/* ?? template ?? */
goto sequence_constructor;
case XSLT_FUNC_ELEMENT:
/* <!-- Content: template --> */
goto sequence_constructor;
case XSLT_FUNC_FALLBACK:
/* <!-- Content: template --> */
goto sequence_constructor;
case XSLT_FUNC_FOREACH:
/* <!-- Content: (xsl:sort*, template) --> */
goto for_each;
case XSLT_FUNC_IF:
/* <!-- Content: template --> */
goto sequence_constructor;
case XSLT_FUNC_OTHERWISE:
/* <!-- Content: template --> */
goto sequence_constructor;
case XSLT_FUNC_MESSAGE:
/* <!-- Content: template --> */
goto sequence_constructor;
case XSLT_FUNC_NUMBER:
/* EMPTY */
goto empty_content;
case XSLT_FUNC_PARAM:
/*
* Check for redefinition.
*/
if ((elem->psvi != NULL) && (cctxt->ivar != NULL)) {
xsltVarInfoPtr ivar = cctxt->ivar;
do {
if ((ivar->name ==
((xsltStyleItemParamPtr) elem->psvi)->name) &&
(ivar->nsName ==
((xsltStyleItemParamPtr) elem->psvi)->ns))
{
elem->psvi = NULL;
xsltTransformError(NULL, cctxt->style, elem,
"Redefinition of variable or parameter '%s'.\n",
ivar->name);
cctxt->style->errors++;
goto error;
}
ivar = ivar->prev;
} while (ivar != NULL);
}
/* <!-- Content: template --> */
goto sequence_constructor;
case XSLT_FUNC_PI:
/* <!-- Content: template --> */
goto sequence_constructor;
case XSLT_FUNC_SORT:
/* EMPTY */
goto empty_content;
case XSLT_FUNC_TEXT:
/* <!-- Content: #PCDATA --> */
goto text;
case XSLT_FUNC_VALUEOF:
/* EMPTY */
goto empty_content;
case XSLT_FUNC_VARIABLE:
/*
* Check for redefinition.
*/
if ((elem->psvi != NULL) && (cctxt->ivar != NULL)) {
xsltVarInfoPtr ivar = cctxt->ivar;
do {
if ((ivar->name ==
((xsltStyleItemVariablePtr) elem->psvi)->name) &&
(ivar->nsName ==
((xsltStyleItemVariablePtr) elem->psvi)->ns))
{
elem->psvi = NULL;
xsltTransformError(NULL, cctxt->style, elem,
"Redefinition of variable or parameter '%s'.\n",
ivar->name);
cctxt->style->errors++;
goto error;
}
ivar = ivar->prev;
} while (ivar != NULL);
}
/* <!-- Content: template --> */
goto sequence_constructor;
case XSLT_FUNC_WHEN:
/* <!-- Content: template --> */
goto sequence_constructor;
case XSLT_FUNC_WITHPARAM:
/* <!-- Content: template --> */
goto sequence_constructor;
default:
#ifdef WITH_XSLT_DEBUG_PARSING
xsltGenericDebug(xsltGenericDebugContext,
"xsltParseXSLTNode: Unhandled XSLT element '%s'.\n",
elem->name);
#endif
xsltTransformError(NULL, cctxt->style, elem,
"xsltParseXSLTNode: Internal error; "
"unhandled XSLT element '%s'.\n", elem->name);
cctxt->style->errors++;
goto internal_err;
}
apply_templates:
/* <!-- Content: (xsl:sort | xsl:with-param)* --> */
if (elem->children != NULL) {
xmlNodePtr child = elem->children;
do {
if (child->type == XML_ELEMENT_NODE) {
if (IS_XSLT_ELEM_FAST(child)) {
if (xmlStrEqual(child->name, BAD_CAST "with-param")) {
cctxt->inode->curChildType = XSLT_FUNC_WITHPARAM;
xsltParseAnyXSLTElem(cctxt, child);
} else if (xmlStrEqual(child->name, BAD_CAST "sort")) {
cctxt->inode->curChildType = XSLT_FUNC_SORT;
xsltParseAnyXSLTElem(cctxt, child);
} else
xsltParseContentError(cctxt->style, child);
} else
xsltParseContentError(cctxt->style, child);
}
child = child->next;
} while (child != NULL);
}
goto exit;
call_template:
/* <!-- Content: xsl:with-param* --> */
if (elem->children != NULL) {
xmlNodePtr child = elem->children;
do {
if (child->type == XML_ELEMENT_NODE) {
if (IS_XSLT_ELEM_FAST(child)) {
xsltStyleType type;
type = xsltGetXSLTElementTypeByNode(cctxt, child);
if (type == XSLT_FUNC_WITHPARAM) {
cctxt->inode->curChildType = XSLT_FUNC_WITHPARAM;
xsltParseAnyXSLTElem(cctxt, child);
} else {
xsltParseContentError(cctxt->style, child);
}
} else
xsltParseContentError(cctxt->style, child);
}
child = child->next;
} while (child != NULL);
}
goto exit;
text:
if (elem->children != NULL) {
xmlNodePtr child = elem->children;
do {
if ((child->type != XML_TEXT_NODE) &&
(child->type != XML_CDATA_SECTION_NODE))
{
xsltTransformError(NULL, cctxt->style, elem,
"The XSLT 'text' element must have only character "
"data as content.\n");
}
child = child->next;
} while (child != NULL);
}
goto exit;
empty_content:
if (elem->children != NULL) {
xmlNodePtr child = elem->children;
/*
* Relaxed behaviour: we will allow whitespace-only text-nodes.
*/
do {
if (((child->type != XML_TEXT_NODE) &&
(child->type != XML_CDATA_SECTION_NODE)) ||
(! IS_BLANK_NODE(child)))
{
xsltTransformError(NULL, cctxt->style, elem,
"This XSLT element must have no content.\n");
cctxt->style->errors++;
break;
}
child = child->next;
} while (child != NULL);
}
goto exit;
choose:
/* <!-- Content: (xsl:when+, xsl:otherwise?) --> */
/*
* TODO: text-nodes in between are *not* allowed in XSLT 1.0.
* The old behaviour did not check this.
* NOTE: In XSLT 2.0 they are stripped beforehand
* if whitespace-only (regardless of xml:space).
*/
if (elem->children != NULL) {
xmlNodePtr child = elem->children;
int nbWhen = 0, nbOtherwise = 0, err = 0;
do {
if (child->type == XML_ELEMENT_NODE) {
if (IS_XSLT_ELEM_FAST(child)) {
xsltStyleType type;
type = xsltGetXSLTElementTypeByNode(cctxt, child);
if (type == XSLT_FUNC_WHEN) {
nbWhen++;
if (nbOtherwise) {
xsltParseContentError(cctxt->style, child);
err = 1;
break;
}
cctxt->inode->curChildType = XSLT_FUNC_WHEN;
xsltParseAnyXSLTElem(cctxt, child);
} else if (type == XSLT_FUNC_OTHERWISE) {
if (! nbWhen) {
xsltParseContentError(cctxt->style, child);
err = 1;
break;
}
if (nbOtherwise) {
xsltTransformError(NULL, cctxt->style, elem,
"The XSLT 'choose' element must not contain "
"more than one XSLT 'otherwise' element.\n");
cctxt->style->errors++;
err = 1;
break;
}
nbOtherwise++;
cctxt->inode->curChildType = XSLT_FUNC_OTHERWISE;
xsltParseAnyXSLTElem(cctxt, child);
} else
xsltParseContentError(cctxt->style, child);
} else
xsltParseContentError(cctxt->style, child);
}
/*
else
xsltParseContentError(cctxt, child);
*/
child = child->next;
} while (child != NULL);
if ((! err) && (! nbWhen)) {
xsltTransformError(NULL, cctxt->style, elem,
"The XSLT element 'choose' must contain at least one "
"XSLT element 'when'.\n");
cctxt->style->errors++;
}
}
goto exit;
for_each:
/* <!-- Content: (xsl:sort*, template) --> */
/*
* NOTE: Text-nodes before xsl:sort are *not* allowed in XSLT 1.0.
* The old behaviour did not allow this, but it catched this
* only at transformation-time.
* In XSLT 2.0 they are stripped beforehand if whitespace-only
* (regardless of xml:space).
*/
if (elem->children != NULL) {
xmlNodePtr child = elem->children;
/*
* Parse xsl:sort first.
*/
do {
if ((child->type == XML_ELEMENT_NODE) &&
IS_XSLT_ELEM_FAST(child))
{
if (xsltGetXSLTElementTypeByNode(cctxt, child) ==
XSLT_FUNC_SORT)
{
cctxt->inode->curChildType = XSLT_FUNC_SORT;
xsltParseAnyXSLTElem(cctxt, child);
} else
break;
} else
break;
child = child->next;
} while (child != NULL);
/*
* Parse the sequece constructor.
*/
if (child != NULL)
xsltParseSequenceConstructor(cctxt, child);
}
goto exit;
sequence_constructor:
/*
* Parse the sequence constructor.
*/
if (elem->children != NULL)
xsltParseSequenceConstructor(cctxt, elem->children);
/*
* Register information for vars/params. Only needed if there
* are any following siblings.
*/
if ((elem->next != NULL) &&
((cctxt->inode->type == XSLT_FUNC_VARIABLE) ||
(cctxt->inode->type == XSLT_FUNC_PARAM)))
{
if ((elem->psvi != NULL) &&
(((xsltStyleBasicItemVariablePtr) elem->psvi)->name))
{
xsltCompilerVarInfoPush(cctxt, elem,
((xsltStyleBasicItemVariablePtr) elem->psvi)->name,
((xsltStyleBasicItemVariablePtr) elem->psvi)->ns);
}
}
error:
exit:
xsltCompilerNodePop(cctxt, elem);
return(0);
internal_err:
xsltCompilerNodePop(cctxt, elem);
return(-1);
}
/**
* xsltForwardsCompatUnkownItemCreate:
*
* @cctxt: the compilation context
*
* Creates a compiled representation of the unknown
* XSLT instruction.
*
* Returns the compiled representation.
*/
static xsltStyleItemUknownPtr
xsltForwardsCompatUnkownItemCreate(xsltCompilerCtxtPtr cctxt)
{
xsltStyleItemUknownPtr item;
item = (xsltStyleItemUknownPtr) xmlMalloc(sizeof(xsltStyleItemUknown));
if (item == NULL) {
xsltTransformError(NULL, cctxt->style, NULL,
"Internal error in xsltForwardsCompatUnkownItemCreate(): "
"Failed to allocate memory.\n");
cctxt->style->errors++;
return(NULL);
}
memset(item, 0, sizeof(xsltStyleItemUknown));
item->type = XSLT_FUNC_UNKOWN_FORWARDS_COMPAT;
/*
* Store it in the stylesheet.
*/
item->next = cctxt->style->preComps;
cctxt->style->preComps = (xsltElemPreCompPtr) item;
return(item);
}
/**
* xsltParseUnknownXSLTElem:
*
* @cctxt: the compilation context
* @node: the element of the unknown XSLT instruction
*
* Parses an unknown XSLT element.
* If forwards compatible mode is enabled this will allow
* such an unknown XSLT and; otherwise it is rejected.
*
* Returns 1 in the unknown XSLT instruction is rejected,
* 0 if everything's fine and
* -1 on API or internal errors.
*/
static int
xsltParseUnknownXSLTElem(xsltCompilerCtxtPtr cctxt,
xmlNodePtr node)
{
if ((cctxt == NULL) || (node == NULL) || (node->type != XML_ELEMENT_NODE))
return(-1);
/*
* Detection of handled content of extension instructions.
*/
if (cctxt->inode->category == XSLT_ELEMENT_CATEGORY_EXTENSION) {
cctxt->inode->extContentHandled = 1;
}
if (cctxt->inode->forwardsCompat == 0) {
/*
* We are not in forwards-compatible mode, so raise an error.
*/
xsltTransformError(NULL, cctxt->style, node,
"Unknown XSLT element '%s'.\n", node->name);
cctxt->style->errors++;
return(1);
}
/*
* Forwards-compatible mode.
* ------------------------
*
* Parse/compile xsl:fallback elements.
*
* QUESTION: Do we have to raise an error if there's no xsl:fallback?
* ANSWER: No, since in the stylesheet the fallback behaviour might
* also be provided by using the XSLT function "element-available".
*/
if (cctxt->unknownItem == NULL) {
/*
* Create a singleton for all unknown XSLT instructions.
*/
cctxt->unknownItem = xsltForwardsCompatUnkownItemCreate(cctxt);
if (cctxt->unknownItem == NULL) {
node->psvi = NULL;
return(-1);
}
}
node->psvi = cctxt->unknownItem;
if (node->children == NULL)
return(0);
else {
xmlNodePtr child = node->children;
xsltCompilerNodePush(cctxt, node);
/*
* Update the in-scope namespaces if needed.
*/
if (node->nsDef != NULL)
cctxt->inode->inScopeNs =
xsltCompilerBuildInScopeNsList(cctxt, node);
/*
* Parse all xsl:fallback children.
*/
do {
if ((child->type == XML_ELEMENT_NODE) &&
IS_XSLT_ELEM_FAST(child) &&
IS_XSLT_NAME(child, "fallback"))
{
cctxt->inode->curChildType = XSLT_FUNC_FALLBACK;
xsltParseAnyXSLTElem(cctxt, child);
}
child = child->next;
} while (child != NULL);
xsltCompilerNodePop(cctxt, node);
}
return(0);
}
/**
* xsltParseSequenceConstructor:
*
* @cctxt: the compilation context
* @cur: the start-node of the content to be parsed
*
* Parses a "template" content (or "sequence constructor" in XSLT 2.0 terms).
* This will additionally remove xsl:text elements from the tree.
*/
void
xsltParseSequenceConstructor(xsltCompilerCtxtPtr cctxt, xmlNodePtr cur)
{
xsltStyleType type;
xmlNodePtr deleteNode = NULL;
if (cctxt == NULL) {
xmlGenericError(xmlGenericErrorContext,
"xsltParseSequenceConstructor: Bad arguments\n");
cctxt->style->errors++;
return;
}
/*
* Detection of handled content of extension instructions.
*/
if (cctxt->inode->category == XSLT_ELEMENT_CATEGORY_EXTENSION) {
cctxt->inode->extContentHandled = 1;
}
if ((cur == NULL) || (cur->type == XML_NAMESPACE_DECL))
return;
/*
* This is the content reffered to as a "template".
* E.g. an xsl:element has such content model:
* <xsl:element
* name = { qname }
* namespace = { uri-reference }
* use-attribute-sets = qnames>
* <!-- Content: template -->
*
* NOTE that in XSLT-2 the term "template" was abandoned due to
* confusion with xsl:template and the term "sequence constructor"
* was introduced instead.
*
* The following XSLT-instructions are allowed to appear:
* xsl:apply-templates, xsl:call-template, xsl:apply-imports,
* xsl:for-each, xsl:value-of, xsl:copy-of, xsl:number,
* xsl:choose, xsl:if, xsl:text, xsl:copy, xsl:variable,
* xsl:message, xsl:fallback,
* xsl:processing-instruction, xsl:comment, xsl:element
* xsl:attribute.
* Additional allowed content:
* 1) extension instructions
* 2) literal result elements
* 3) PCDATA
*
* NOTE that this content model does *not* allow xsl:param.
*/
while (cur != NULL) {
if (deleteNode != NULL) {
#ifdef WITH_XSLT_DEBUG_BLANKS
xsltGenericDebug(xsltGenericDebugContext,
"xsltParseSequenceConstructor: removing xsl:text element\n");
#endif
xmlUnlinkNode(deleteNode);
xmlFreeNode(deleteNode);
deleteNode = NULL;
}
if (cur->type == XML_ELEMENT_NODE) {
if (cur->psvi == xsltXSLTTextMarker) {
/*
* xsl:text elements
* --------------------------------------------------------
*/
xmlNodePtr tmp;
cur->psvi = NULL;
/*
* Mark the xsl:text element for later deletion.
*/
deleteNode = cur;
/*
* Validate content.
*/
tmp = cur->children;
if (tmp) {
/*
* We don't expect more than one text-node in the
* content, since we already merged adjacent
* text/CDATA-nodes and eliminated PI/comment-nodes.
*/
if ((tmp->type == XML_TEXT_NODE) ||
(tmp->next == NULL))
{
/*
* Leave the contained text-node in the tree.
*/
xmlUnlinkNode(tmp);
xmlAddPrevSibling(cur, tmp);
} else {
tmp = NULL;
xsltTransformError(NULL, cctxt->style, cur,
"Element 'xsl:text': Invalid type "
"of node found in content.\n");
cctxt->style->errors++;
}
}
if (cur->properties) {
xmlAttrPtr attr;
/*
* TODO: We need to report errors for
* invalid attrs.
*/
attr = cur->properties;
do {
if ((attr->ns == NULL) &&
(attr->name != NULL) &&
(attr->name[0] == 'd') &&
xmlStrEqual(attr->name,
BAD_CAST "disable-output-escaping"))
{
/*
* Attr "disable-output-escaping".
* XSLT-2: This attribute is deprecated.
*/
if ((attr->children != NULL) &&
xmlStrEqual(attr->children->content,
BAD_CAST "yes"))
{
/*
* Disable output escaping for this
* text node.
*/
if (tmp)
tmp->name = xmlStringTextNoenc;
} else if ((attr->children == NULL) ||
(attr->children->content == NULL) ||
(!xmlStrEqual(attr->children->content,
BAD_CAST "no")))
{
xsltTransformError(NULL, cctxt->style,
cur,
"Attribute 'disable-output-escaping': "
"Invalid value. Expected is "
"'yes' or 'no'.\n");
cctxt->style->errors++;
}
break;
}
attr = attr->next;
} while (attr != NULL);
}
} else if (IS_XSLT_ELEM_FAST(cur)) {
/*
* TODO: Using the XSLT-marker is still not stable yet.
*/
/* if (cur->psvi == xsltXSLTElemMarker) { */
/*
* XSLT instructions
* --------------------------------------------------------
*/
cur->psvi = NULL;
type = xsltGetXSLTElementTypeByNode(cctxt, cur);
switch (type) {
case XSLT_FUNC_APPLYIMPORTS:
case XSLT_FUNC_APPLYTEMPLATES:
case XSLT_FUNC_ATTRIBUTE:
case XSLT_FUNC_CALLTEMPLATE:
case XSLT_FUNC_CHOOSE:
case XSLT_FUNC_COMMENT:
case XSLT_FUNC_COPY:
case XSLT_FUNC_COPYOF:
case XSLT_FUNC_DOCUMENT: /* Extra one */
case XSLT_FUNC_ELEMENT:
case XSLT_FUNC_FALLBACK:
case XSLT_FUNC_FOREACH:
case XSLT_FUNC_IF:
case XSLT_FUNC_MESSAGE:
case XSLT_FUNC_NUMBER:
case XSLT_FUNC_PI:
case XSLT_FUNC_TEXT:
case XSLT_FUNC_VALUEOF:
case XSLT_FUNC_VARIABLE:
/*
* Parse the XSLT element.
*/
cctxt->inode->curChildType = type;
xsltParseAnyXSLTElem(cctxt, cur);
break;
default:
xsltParseUnknownXSLTElem(cctxt, cur);
cur = cur->next;
continue;
}
} else {
/*
* Non-XSLT elements
* -----------------
*/
xsltCompilerNodePush(cctxt, cur);
/*
* Update the in-scope namespaces if needed.
*/
if (cur->nsDef != NULL)
cctxt->inode->inScopeNs =
xsltCompilerBuildInScopeNsList(cctxt, cur);
/*
* The current element is either a literal result element
* or an extension instruction.
*
* Process attr "xsl:extension-element-prefixes".
* FUTURE TODO: IIRC in XSLT 2.0 this attribute must be
* processed by the implementor of the extension function;
* i.e., it won't be handled by the XSLT processor.
*/
/* SPEC 1.0:
* "exclude-result-prefixes" is only allowed on literal
* result elements and "xsl:exclude-result-prefixes"
* on xsl:stylesheet/xsl:transform.
* SPEC 2.0:
* "There are a number of standard attributes
* that may appear on any XSLT element: specifically
* version, exclude-result-prefixes,
* extension-element-prefixes, xpath-default-namespace,
* default-collation, and use-when."
*
* SPEC 2.0:
* For literal result elements:
* "xsl:version, xsl:exclude-result-prefixes,
* xsl:extension-element-prefixes,
* xsl:xpath-default-namespace,
* xsl:default-collation, or xsl:use-when."
*/
if (cur->properties)
cctxt->inode->extElemNs =
xsltParseExtElemPrefixes(cctxt,
cur, cctxt->inode->extElemNs,
XSLT_ELEMENT_CATEGORY_LRE);
/*
* Eval if we have an extension instruction here.
*/
if ((cur->ns != NULL) &&
(cctxt->inode->extElemNs != NULL) &&
(xsltCheckExtPrefix(cctxt->style, cur->ns->href) == 1))
{
/*
* Extension instructions
* ----------------------------------------------------
* Mark the node information.
*/
cctxt->inode->category = XSLT_ELEMENT_CATEGORY_EXTENSION;
cctxt->inode->extContentHandled = 0;
if (cur->psvi != NULL) {
cur->psvi = NULL;
/*
* TODO: Temporary sanity check.
*/
xsltTransformError(NULL, cctxt->style, cur,
"Internal error in xsltParseSequenceConstructor(): "
"Occupied PSVI field.\n");
cctxt->style->errors++;
cur = cur->next;
continue;
}
cur->psvi = (void *)
xsltPreComputeExtModuleElement(cctxt->style, cur);
if (cur->psvi == NULL) {
/*
* OLD COMMENT: "Unknown element, maybe registered
* at the context level. Mark it for later
* recognition."
* QUESTION: What does the xsltExtMarker mean?
* ANSWER: It is used in
* xsltApplySequenceConstructor() at
* transformation-time to look out for extension
* registered in the transformation context.
*/
cur->psvi = (void *) xsltExtMarker;
}
/*
* BIG NOTE: Now the ugly part. In previous versions
* of Libxslt (until 1.1.16), all the content of an
* extension instruction was processed and compiled without
* the need of the extension-author to explicitely call
* such a processing;.We now need to mimic this old
* behaviour in order to avoid breaking old code
* on the extension-author's side.
* The mechanism:
* 1) If the author does *not* set the
* compile-time-flag @extContentHandled, then we'll
* parse the content assuming that it's a "template"
* (or "sequence constructor in XSLT 2.0 terms).
* NOTE: If the extension is registered at
* transformation-time only, then there's no way of
* knowing that content shall be valid, and we'll
* process the content the same way.
* 2) If the author *does* set the flag, then we'll assume
* that the author has handled the parsing him/herself
* (e.g. called xsltParseSequenceConstructor(), etc.
* explicitely in his/her code).
*/
if ((cur->children != NULL) &&
(cctxt->inode->extContentHandled == 0))
{
/*
* Default parsing of the content using the
* sequence-constructor model.
*/
xsltParseSequenceConstructor(cctxt, cur->children);
}
} else {
/*
* Literal result element
* ----------------------------------------------------
* Allowed XSLT attributes:
* xsl:extension-element-prefixes CDATA #IMPLIED
* xsl:exclude-result-prefixes CDATA #IMPLIED
* TODO: xsl:use-attribute-sets %qnames; #IMPLIED
* xsl:version NMTOKEN #IMPLIED
*/
cur->psvi = NULL;
cctxt->inode->category = XSLT_ELEMENT_CATEGORY_LRE;
if (cur->properties != NULL) {
xmlAttrPtr attr = cur->properties;
/*
* Attribute "xsl:exclude-result-prefixes".
*/
cctxt->inode->exclResultNs =
xsltParseExclResultPrefixes(cctxt, cur,
cctxt->inode->exclResultNs,
XSLT_ELEMENT_CATEGORY_LRE);
/*
* Attribute "xsl:version".
*/
xsltParseAttrXSLTVersion(cctxt, cur,
XSLT_ELEMENT_CATEGORY_LRE);
/*
* Report invalid XSLT attributes.
* For XSLT 1.0 only xsl:use-attribute-sets is allowed
* next to xsl:version, xsl:exclude-result-prefixes and
* xsl:extension-element-prefixes.
*
* Mark all XSLT attributes, in order to skip such
* attributes when instantiating the LRE.
*/
do {
if ((attr->psvi != xsltXSLTAttrMarker) &&
IS_XSLT_ATTR_FAST(attr))
{
if (! xmlStrEqual(attr->name,
BAD_CAST "use-attribute-sets"))
{
xsltTransformError(NULL, cctxt->style,
cur,
"Unknown XSLT attribute '%s'.\n",
attr->name);
cctxt->style->errors++;
} else {
/*
* XSLT attr marker.
*/
attr->psvi = (void *) xsltXSLTAttrMarker;
}
}
attr = attr->next;
} while (attr != NULL);
}
/*
* Create/reuse info for the literal result element.
*/
if (cctxt->inode->nsChanged)
xsltLREInfoCreate(cctxt, cur, 1);
cur->psvi = cctxt->inode->litResElemInfo;
/*
* Apply ns-aliasing on the element and on its attributes.
*/
if (cctxt->hasNsAliases)
xsltLREBuildEffectiveNs(cctxt, cur);
/*
* Compile attribute value templates (AVT).
*/
if (cur->properties) {
xmlAttrPtr attr = cur->properties;
while (attr != NULL) {
xsltCompileAttr(cctxt->style, attr);
attr = attr->next;
}
}
/*
* Parse the content, which is defined to be a "template"
* (or "sequence constructor" in XSLT 2.0 terms).
*/
if (cur->children != NULL) {
xsltParseSequenceConstructor(cctxt, cur->children);
}
}
/*
* Leave the non-XSLT element.
*/
xsltCompilerNodePop(cctxt, cur);
}
}
cur = cur->next;
}
if (deleteNode != NULL) {
#ifdef WITH_XSLT_DEBUG_BLANKS
xsltGenericDebug(xsltGenericDebugContext,
"xsltParseSequenceConstructor: removing xsl:text element\n");
#endif
xmlUnlinkNode(deleteNode);
xmlFreeNode(deleteNode);
deleteNode = NULL;
}
}
/**
* xsltParseTemplateContent:
* @style: the XSLT stylesheet
* @templ: the node containing the content to be parsed
*
* Parses and compiles the content-model of an xsl:template element.
* Note that this is *not* the "template" content model (or "sequence
* constructor" in XSLT 2.0); it it allows addional xsl:param
* elements as immediate children of @templ.
*
* Called by:
* exsltFuncFunctionComp() (EXSLT, functions.c)
* So this is intended to be called from extension functions.
*/
void
xsltParseTemplateContent(xsltStylesheetPtr style, xmlNodePtr templ) {
if ((style == NULL) || (templ == NULL) ||
(templ->type == XML_NAMESPACE_DECL))
return;
/*
* Detection of handled content of extension instructions.
*/
if (XSLT_CCTXT(style)->inode->category == XSLT_ELEMENT_CATEGORY_EXTENSION) {
XSLT_CCTXT(style)->inode->extContentHandled = 1;
}
if (templ->children != NULL) {
xmlNodePtr child = templ->children;
/*
* Process xsl:param elements, which can only occur as the
* immediate children of xsl:template (well, and of any
* user-defined extension instruction if needed).
*/
do {
if ((child->type == XML_ELEMENT_NODE) &&
IS_XSLT_ELEM_FAST(child) &&
IS_XSLT_NAME(child, "param"))
{
XSLT_CCTXT(style)->inode->curChildType = XSLT_FUNC_PARAM;
xsltParseAnyXSLTElem(XSLT_CCTXT(style), child);
} else
break;
child = child->next;
} while (child != NULL);
/*
* Parse the content and register the pattern.
*/
xsltParseSequenceConstructor(XSLT_CCTXT(style), child);
}
}
#else /* XSLT_REFACTORED */
/**
* xsltParseTemplateContent:
* @style: the XSLT stylesheet
* @templ: the container node (can be a document for literal results)
*
* parse a template content-model
* Clean-up the template content from unwanted ignorable blank nodes
* and process xslt:text
*/
void
xsltParseTemplateContent(xsltStylesheetPtr style, xmlNodePtr templ) {
xmlNodePtr cur, delete;
if ((style == NULL) || (templ == NULL) ||
(templ->type == XML_NAMESPACE_DECL)) return;
/*
* This content comes from the stylesheet
* For stylesheets, the set of whitespace-preserving
* element names consists of just xsl:text.
*/
cur = templ->children;
delete = NULL;
while (cur != NULL) {
if (delete != NULL) {
#ifdef WITH_XSLT_DEBUG_BLANKS
xsltGenericDebug(xsltGenericDebugContext,
"xsltParseTemplateContent: removing text\n");
#endif
xmlUnlinkNode(delete);
xmlFreeNode(delete);
delete = NULL;
}
if (IS_XSLT_ELEM(cur)) {
if (IS_XSLT_NAME(cur, "text")) {
/*
* TODO: Processing of xsl:text should be moved to
* xsltPrecomputeStylesheet(), since otherwise this
* will be performed for every multiply included
* stylesheet; i.e. this here is not skipped with
* the use of the style->nopreproc flag.
*/
if (cur->children != NULL) {
xmlChar *prop;
xmlNodePtr text = cur->children, next;
int noesc = 0;
prop = xmlGetNsProp(cur,
(const xmlChar *)"disable-output-escaping",
NULL);
if (prop != NULL) {
#ifdef WITH_XSLT_DEBUG_PARSING
xsltGenericDebug(xsltGenericDebugContext,
"Disable escaping: %s\n", text->content);
#endif
if (xmlStrEqual(prop, (const xmlChar *)"yes")) {
noesc = 1;
} else if (!xmlStrEqual(prop,
(const xmlChar *)"no")){
xsltTransformError(NULL, style, cur,
"xsl:text: disable-output-escaping allows only yes or no\n");
style->warnings++;
}
xmlFree(prop);
}
while (text != NULL) {
if (text->type == XML_COMMENT_NODE) {
text = text->next;
continue;
}
if ((text->type != XML_TEXT_NODE) &&
(text->type != XML_CDATA_SECTION_NODE)) {
xsltTransformError(NULL, style, cur,
"xsltParseTemplateContent: xslt:text content problem\n");
style->errors++;
break;
}
if ((noesc) && (text->type != XML_CDATA_SECTION_NODE))
text->name = xmlStringTextNoenc;
text = text->next;
}
/*
* replace xsl:text by the list of childs
*/
if (text == NULL) {
text = cur->children;
while (text != NULL) {
if ((style->internalized) &&
(text->content != NULL) &&
(!xmlDictOwns(style->dict, text->content))) {
/*
* internalize the text string
*/
if (text->doc->dict != NULL) {
const xmlChar *tmp;
tmp = xmlDictLookup(text->doc->dict,
text->content, -1);
if (tmp != text->content) {
xmlNodeSetContent(text, NULL);
text->content = (xmlChar *) tmp;
}
}
}
next = text->next;
xmlUnlinkNode(text);
xmlAddPrevSibling(cur, text);
text = next;
}
}
}
delete = cur;
goto skip_children;
}
}
else if ((cur->ns != NULL) && (style->nsDefs != NULL) &&
(xsltCheckExtPrefix(style, cur->ns->prefix)))
{
/*
* okay this is an extension element compile it too
*/
xsltStylePreCompute(style, cur);
}
else if (cur->type == XML_ELEMENT_NODE)
{
/*
* This is an element which will be output as part of the
* template exectution, precompile AVT if found.
*/
if ((cur->ns == NULL) && (style->defaultAlias != NULL)) {
cur->ns = xmlSearchNsByHref(cur->doc, cur,
style->defaultAlias);
}
if (cur->properties != NULL) {
xmlAttrPtr attr = cur->properties;
while (attr != NULL) {
xsltCompileAttr(style, attr);
attr = attr->next;
}
}
}
/*
* Skip to next node
*/
if (cur->children != NULL) {
if (cur->children->type != XML_ENTITY_DECL) {
cur = cur->children;
continue;
}
}
skip_children:
if (cur->next != NULL) {
cur = cur->next;
continue;
}
do {
cur = cur->parent;
if (cur == NULL)
break;
if (cur == templ) {
cur = NULL;
break;
}
if (cur->next != NULL) {
cur = cur->next;
break;
}
} while (cur != NULL);
}
if (delete != NULL) {
#ifdef WITH_XSLT_DEBUG_PARSING
xsltGenericDebug(xsltGenericDebugContext,
"xsltParseTemplateContent: removing text\n");
#endif
xmlUnlinkNode(delete);
xmlFreeNode(delete);
delete = NULL;
}
/*
* Skip the first params
*/
cur = templ->children;
while (cur != NULL) {
if ((IS_XSLT_ELEM(cur)) && (!(IS_XSLT_NAME(cur, "param"))))
break;
cur = cur->next;
}
/*
* Browse the remainder of the template
*/
while (cur != NULL) {
if ((IS_XSLT_ELEM(cur)) && (IS_XSLT_NAME(cur, "param"))) {
xmlNodePtr param = cur;
xsltTransformError(NULL, style, cur,
"xsltParseTemplateContent: ignoring misplaced param element\n");
if (style != NULL) style->warnings++;
cur = cur->next;
xmlUnlinkNode(param);
xmlFreeNode(param);
} else
break;
}
}
#endif /* else XSLT_REFACTORED */
/**
* xsltParseStylesheetKey:
* @style: the XSLT stylesheet
* @key: the "key" element
*
* <!-- Category: top-level-element -->
* <xsl:key name = qname, match = pattern, use = expression />
*
* parse an XSLT stylesheet key definition and register it
*/
static void
xsltParseStylesheetKey(xsltStylesheetPtr style, xmlNodePtr key) {
xmlChar *prop = NULL;
xmlChar *use = NULL;
xmlChar *match = NULL;
xmlChar *name = NULL;
xmlChar *nameURI = NULL;
if ((style == NULL) || (key == NULL) || (key->type != XML_ELEMENT_NODE))
return;
/*
* Get arguments
*/
prop = xmlGetNsProp(key, (const xmlChar *)"name", NULL);
if (prop != NULL) {
const xmlChar *URI;
/*
* TODO: Don't use xsltGetQNameURI().
*/
URI = xsltGetQNameURI(key, &prop);
if (prop == NULL) {
if (style != NULL) style->errors++;
goto error;
} else {
name = prop;
if (URI != NULL)
nameURI = xmlStrdup(URI);
}
#ifdef WITH_XSLT_DEBUG_PARSING
xsltGenericDebug(xsltGenericDebugContext,
"xsltParseStylesheetKey: name %s\n", name);
#endif
} else {
xsltTransformError(NULL, style, key,
"xsl:key : error missing name\n");
if (style != NULL) style->errors++;
goto error;
}
match = xmlGetNsProp(key, (const xmlChar *)"match", NULL);
if (match == NULL) {
xsltTransformError(NULL, style, key,
"xsl:key : error missing match\n");
if (style != NULL) style->errors++;
goto error;
}
use = xmlGetNsProp(key, (const xmlChar *)"use", NULL);
if (use == NULL) {
xsltTransformError(NULL, style, key,
"xsl:key : error missing use\n");
if (style != NULL) style->errors++;
goto error;
}
/*
* register the keys
*/
xsltAddKey(style, name, nameURI, match, use, key);
error:
if (use != NULL)
xmlFree(use);
if (match != NULL)
xmlFree(match);
if (name != NULL)
xmlFree(name);
if (nameURI != NULL)
xmlFree(nameURI);
if (key->children != NULL) {
xsltParseContentError(style, key->children);
}
}
#ifdef XSLT_REFACTORED
/**
* xsltParseXSLTTemplate:
* @style: the XSLT stylesheet
* @template: the "template" element
*
* parse an XSLT stylesheet template building the associated structures
* TODO: Is @style ever expected to be NULL?
*
* Called from:
* xsltParseXSLTStylesheet()
* xsltParseStylesheetTop()
*/
static void
xsltParseXSLTTemplate(xsltCompilerCtxtPtr cctxt, xmlNodePtr templNode) {
xsltTemplatePtr templ;
xmlChar *prop;
double priority;
if ((cctxt == NULL) || (templNode == NULL) ||
(templNode->type != XML_ELEMENT_NODE))
return;
/*
* Create and link the structure
*/
templ = xsltNewTemplate();
if (templ == NULL)
return;
xsltCompilerNodePush(cctxt, templNode);
if (templNode->nsDef != NULL)
cctxt->inode->inScopeNs =
xsltCompilerBuildInScopeNsList(cctxt, templNode);
templ->next = cctxt->style->templates;
cctxt->style->templates = templ;
templ->style = cctxt->style;
/*
* Attribute "mode".
*/
prop = xmlGetNsProp(templNode, (const xmlChar *)"mode", NULL);
if (prop != NULL) {
const xmlChar *modeURI;
/*
* TODO: We need a standardized function for extraction
* of namespace names and local names from QNames.
* Don't use xsltGetQNameURI() as it cannot channe�
* reports through the context.
*/
modeURI = xsltGetQNameURI(templNode, &prop);
if (prop == NULL) {
cctxt->style->errors++;
goto error;
}
templ->mode = xmlDictLookup(cctxt->style->dict, prop, -1);
xmlFree(prop);
prop = NULL;
if (xmlValidateNCName(templ->mode, 0)) {
xsltTransformError(NULL, cctxt->style, templNode,
"xsl:template: Attribute 'mode': The local part '%s' "
"of the value is not a valid NCName.\n", templ->name);
cctxt->style->errors++;
goto error;
}
if (modeURI != NULL)
templ->modeURI = xmlDictLookup(cctxt->style->dict, modeURI, -1);
#ifdef WITH_XSLT_DEBUG_PARSING
xsltGenericDebug(xsltGenericDebugContext,
"xsltParseXSLTTemplate: mode %s\n", templ->mode);
#endif
}
/*
* Attribute "match".
*/
prop = xmlGetNsProp(templNode, (const xmlChar *)"match", NULL);
if (prop != NULL) {
templ->match = prop;
prop = NULL;
}
/*
* Attribute "priority".
*/
prop = xmlGetNsProp(templNode, (const xmlChar *)"priority", NULL);
if (prop != NULL) {
priority = xmlXPathStringEvalNumber(prop);
templ->priority = (float) priority;
xmlFree(prop);
prop = NULL;
}
/*
* Attribute "name".
*/
prop = xmlGetNsProp(templNode, (const xmlChar *)"name", NULL);
if (prop != NULL) {
const xmlChar *nameURI;
xsltTemplatePtr curTempl;
/*
* TODO: Don't use xsltGetQNameURI().
*/
nameURI = xsltGetQNameURI(templNode, &prop);
if (prop == NULL) {
cctxt->style->errors++;
goto error;
}
templ->name = xmlDictLookup(cctxt->style->dict, prop, -1);
xmlFree(prop);
prop = NULL;
if (xmlValidateNCName(templ->name, 0)) {
xsltTransformError(NULL, cctxt->style, templNode,
"xsl:template: Attribute 'name': The local part '%s' of "
"the value is not a valid NCName.\n", templ->name);
cctxt->style->errors++;
goto error;
}
if (nameURI != NULL)
templ->nameURI = xmlDictLookup(cctxt->style->dict, nameURI, -1);
curTempl = templ->next;
while (curTempl != NULL) {
if ((nameURI != NULL && xmlStrEqual(curTempl->name, templ->name) &&
xmlStrEqual(curTempl->nameURI, nameURI) ) ||
(nameURI == NULL && curTempl->nameURI == NULL &&
xmlStrEqual(curTempl->name, templ->name)))
{
xsltTransformError(NULL, cctxt->style, templNode,
"xsl:template: error duplicate name '%s'\n", templ->name);
cctxt->style->errors++;
goto error;
}
curTempl = curTempl->next;
}
}
if (templNode->children != NULL) {
xsltParseTemplateContent(cctxt->style, templNode);
/*
* MAYBE TODO: Custom behaviour: In order to stay compatible with
* Xalan and MSXML(.NET), we could allow whitespace
* to appear before an xml:param element; this whitespace
* will additionally become part of the "template".
* NOTE that this is totally deviates from the spec, but
* is the de facto behaviour of Xalan and MSXML(.NET).
* Personally I wouldn't allow this, since if we have:
* <xsl:template ...xml:space="preserve">
* <xsl:param name="foo"/>
* <xsl:param name="bar"/>
* <xsl:param name="zoo"/>
* ... the whitespace between every xsl:param would be
* added to the result tree.
*/
}
templ->elem = templNode;
templ->content = templNode->children;
xsltAddTemplate(cctxt->style, templ, templ->mode, templ->modeURI);
error:
xsltCompilerNodePop(cctxt, templNode);
return;
}
#else /* XSLT_REFACTORED */
/**
* xsltParseStylesheetTemplate:
* @style: the XSLT stylesheet
* @template: the "template" element
*
* parse an XSLT stylesheet template building the associated structures
*/
static void
xsltParseStylesheetTemplate(xsltStylesheetPtr style, xmlNodePtr template) {
xsltTemplatePtr ret;
xmlChar *prop;
xmlChar *mode = NULL;
xmlChar *modeURI = NULL;
double priority;
if ((style == NULL) || (template == NULL) ||
(template->type != XML_ELEMENT_NODE))
return;
/*
* Create and link the structure
*/
ret = xsltNewTemplate();
if (ret == NULL)
return;
ret->next = style->templates;
style->templates = ret;
ret->style = style;
/*
* Get inherited namespaces
*/
/*
* TODO: Apply the optimized in-scope-namespace mechanism
* as for the other XSLT instructions.
*/
xsltGetInheritedNsList(style, ret, template);
/*
* Get arguments
*/
prop = xmlGetNsProp(template, (const xmlChar *)"mode", NULL);
if (prop != NULL) {
const xmlChar *URI;
/*
* TODO: Don't use xsltGetQNameURI().
*/
URI = xsltGetQNameURI(template, &prop);
if (prop == NULL) {
if (style != NULL) style->errors++;
goto error;
} else {
mode = prop;
if (URI != NULL)
modeURI = xmlStrdup(URI);
}
ret->mode = xmlDictLookup(style->dict, mode, -1);
ret->modeURI = xmlDictLookup(style->dict, modeURI, -1);
#ifdef WITH_XSLT_DEBUG_PARSING
xsltGenericDebug(xsltGenericDebugContext,
"xsltParseStylesheetTemplate: mode %s\n", mode);
#endif
if (mode != NULL) xmlFree(mode);
if (modeURI != NULL) xmlFree(modeURI);
}
prop = xmlGetNsProp(template, (const xmlChar *)"match", NULL);
if (prop != NULL) {
if (ret->match != NULL) xmlFree(ret->match);
ret->match = prop;
}
prop = xmlGetNsProp(template, (const xmlChar *)"priority", NULL);
if (prop != NULL) {
priority = xmlXPathStringEvalNumber(prop);
ret->priority = (float) priority;
xmlFree(prop);
}
prop = xmlGetNsProp(template, (const xmlChar *)"name", NULL);
if (prop != NULL) {
const xmlChar *URI;
/*
* TODO: Don't use xsltGetQNameURI().
*/
URI = xsltGetQNameURI(template, &prop);
if (prop == NULL) {
if (style != NULL) style->errors++;
goto error;
} else {
if (xmlValidateNCName(prop,0)) {
xsltTransformError(NULL, style, template,
"xsl:template : error invalid name '%s'\n", prop);
if (style != NULL) style->errors++;
goto error;
}
ret->name = xmlDictLookup(style->dict, BAD_CAST prop, -1);
xmlFree(prop);
prop = NULL;
if (URI != NULL)
ret->nameURI = xmlDictLookup(style->dict, BAD_CAST URI, -1);
else
ret->nameURI = NULL;
}
}
/*
* parse the content and register the pattern
*/
xsltParseTemplateContent(style, template);
ret->elem = template;
ret->content = template->children;
xsltAddTemplate(style, ret, ret->mode, ret->modeURI);
error:
return;
}
#endif /* else XSLT_REFACTORED */
#ifdef XSLT_REFACTORED
/**
* xsltIncludeComp:
* @cctxt: the compilation contenxt
* @node: the xsl:include node
*
* Process the xslt include node on the source node
*/
static xsltStyleItemIncludePtr
xsltCompileXSLTIncludeElem(xsltCompilerCtxtPtr cctxt, xmlNodePtr node) {
xsltStyleItemIncludePtr item;
if ((cctxt == NULL) || (node == NULL) || (node->type != XML_ELEMENT_NODE))
return(NULL);
node->psvi = NULL;
item = (xsltStyleItemIncludePtr) xmlMalloc(sizeof(xsltStyleItemInclude));
if (item == NULL) {
xsltTransformError(NULL, cctxt->style, node,
"xsltIncludeComp : malloc failed\n");
cctxt->style->errors++;
return(NULL);
}
memset(item, 0, sizeof(xsltStyleItemInclude));
node->psvi = item;
item->inst = node;
item->type = XSLT_FUNC_INCLUDE;
item->next = cctxt->style->preComps;
cctxt->style->preComps = (xsltElemPreCompPtr) item;
return(item);
}
/**
* xsltParseFindTopLevelElem:
*/
static int
xsltParseFindTopLevelElem(xsltCompilerCtxtPtr cctxt,
xmlNodePtr cur,
const xmlChar *name,
const xmlChar *namespaceURI,
int breakOnOtherElem,
xmlNodePtr *resultNode)
{
if (name == NULL)
return(-1);
*resultNode = NULL;
while (cur != NULL) {
if (cur->type == XML_ELEMENT_NODE) {
if ((cur->ns != NULL) && (cur->name != NULL)) {
if ((*(cur->name) == *name) &&
xmlStrEqual(cur->name, name) &&
xmlStrEqual(cur->ns->href, namespaceURI))
{
*resultNode = cur;
return(1);
}
}
if (breakOnOtherElem)
break;
}
cur = cur->next;
}
*resultNode = cur;
return(0);
}
static int
xsltParseTopLevelXSLTElem(xsltCompilerCtxtPtr cctxt,
xmlNodePtr node,
xsltStyleType type)
{
int ret = 0;
/*
* TODO: The reason why this function exists:
* due to historical reasons some of the
* top-level declarations are processed by functions
* in other files. Since we need still to set
* up the node-info and generate information like
* in-scope namespaces, this is a wrapper around
* those old parsing functions.
*/
xsltCompilerNodePush(cctxt, node);
if (node->nsDef != NULL)
cctxt->inode->inScopeNs =
xsltCompilerBuildInScopeNsList(cctxt, node);
cctxt->inode->type = type;
switch (type) {
case XSLT_FUNC_INCLUDE:
{
int oldIsInclude;
if (xsltCompileXSLTIncludeElem(cctxt, node) == NULL)
goto exit;
/*
* Mark this stylesheet tree as being currently included.
*/
oldIsInclude = cctxt->isInclude;
cctxt->isInclude = 1;
if (xsltParseStylesheetInclude(cctxt->style, node) != 0) {
cctxt->style->errors++;
}
cctxt->isInclude = oldIsInclude;
}
break;
case XSLT_FUNC_PARAM:
xsltStylePreCompute(cctxt->style, node);
xsltParseGlobalParam(cctxt->style, node);
break;
case XSLT_FUNC_VARIABLE:
xsltStylePreCompute(cctxt->style, node);
xsltParseGlobalVariable(cctxt->style, node);
break;
case XSLT_FUNC_ATTRSET:
xsltParseStylesheetAttributeSet(cctxt->style, node);
break;
default:
xsltTransformError(NULL, cctxt->style, node,
"Internal error: (xsltParseTopLevelXSLTElem) "
"Cannot handle this top-level declaration.\n");
cctxt->style->errors++;
ret = -1;
}
exit:
xsltCompilerNodePop(cctxt, node);
return(ret);
}
#if 0
static int
xsltParseRemoveWhitespace(xmlNodePtr node)
{
if ((node == NULL) || (node->children == NULL))
return(0);
else {
xmlNodePtr delNode = NULL, child = node->children;
do {
if (delNode) {
xmlUnlinkNode(delNode);
xmlFreeNode(delNode);
delNode = NULL;
}
if (((child->type == XML_TEXT_NODE) ||
(child->type == XML_CDATA_SECTION_NODE)) &&
(IS_BLANK_NODE(child)))
delNode = child;
child = child->next;
} while (child != NULL);
if (delNode) {
xmlUnlinkNode(delNode);
xmlFreeNode(delNode);
delNode = NULL;
}
}
return(0);
}
#endif
static int
xsltParseXSLTStylesheetElemCore(xsltCompilerCtxtPtr cctxt, xmlNodePtr node)
{
#ifdef WITH_XSLT_DEBUG_PARSING
int templates = 0;
#endif
xmlNodePtr cur, start = NULL;
xsltStylesheetPtr style;
if ((cctxt == NULL) || (node == NULL) ||
(node->type != XML_ELEMENT_NODE))
return(-1);
style = cctxt->style;
/*
* At this stage all import declarations of all stylesheet modules
* with the same stylesheet level have been processed.
* Now we can safely parse the rest of the declarations.
*/
if (IS_XSLT_ELEM_FAST(node) && IS_XSLT_NAME(node, "include"))
{
xsltDocumentPtr include;
/*
* URGENT TODO: Make this work with simplified stylesheets!
* I.e., when we won't find an xsl:stylesheet element.
*/
/*
* This is as include declaration.
*/
include = ((xsltStyleItemIncludePtr) node->psvi)->include;
if (include == NULL) {
/* TODO: raise error? */
return(-1);
}
/*
* TODO: Actually an xsl:include should locate an embedded
* stylesheet as well; so the document-element won't always
* be the element where the actual stylesheet is rooted at.
* But such embedded stylesheets are not supported by Libxslt yet.
*/
node = xmlDocGetRootElement(include->doc);
if (node == NULL) {
return(-1);
}
}
if (node->children == NULL)
return(0);
/*
* Push the xsl:stylesheet/xsl:transform element.
*/
xsltCompilerNodePush(cctxt, node);
cctxt->inode->isRoot = 1;
cctxt->inode->nsChanged = 0;
/*
* Start with the naked dummy info for literal result elements.
*/
cctxt->inode->litResElemInfo = cctxt->inodeList->litResElemInfo;
/*
* In every case, we need to have
* the in-scope namespaces of the element, where the
* stylesheet is rooted at, regardless if it's an XSLT
* instruction or a literal result instruction (or if
* this is an embedded stylesheet).
*/
cctxt->inode->inScopeNs =
xsltCompilerBuildInScopeNsList(cctxt, node);
/*
* Process attributes of xsl:stylesheet/xsl:transform.
* --------------------------------------------------
* Allowed are:
* id = id
* extension-element-prefixes = tokens
* exclude-result-prefixes = tokens
* version = number (mandatory)
*/
if (xsltParseAttrXSLTVersion(cctxt, node,
XSLT_ELEMENT_CATEGORY_XSLT) == 0)
{
/*
* Attribute "version".
* XSLT 1.0: "An xsl:stylesheet element *must* have a version
* attribute, indicating the version of XSLT that the
* stylesheet requires".
* The root element of a simplified stylesheet must also have
* this attribute.
*/
#ifdef XSLT_REFACTORED_MANDATORY_VERSION
if (isXsltElem)
xsltTransformError(NULL, cctxt->style, node,
"The attribute 'version' is missing.\n");
cctxt->style->errors++;
#else
/* OLD behaviour. */
xsltTransformError(NULL, cctxt->style, node,
"xsl:version is missing: document may not be a stylesheet\n");
cctxt->style->warnings++;
#endif
}
/*
* The namespaces declared by the attributes
* "extension-element-prefixes" and
* "exclude-result-prefixes" are local to *this*
* stylesheet tree; i.e., they are *not* visible to
* other stylesheet-modules, whether imported or included.
*
* Attribute "extension-element-prefixes".
*/
cctxt->inode->extElemNs =
xsltParseExtElemPrefixes(cctxt, node, NULL,
XSLT_ELEMENT_CATEGORY_XSLT);
/*
* Attribute "exclude-result-prefixes".
*/
cctxt->inode->exclResultNs =
xsltParseExclResultPrefixes(cctxt, node, NULL,
XSLT_ELEMENT_CATEGORY_XSLT);
/*
* Create/reuse info for the literal result element.
*/
if (cctxt->inode->nsChanged)
xsltLREInfoCreate(cctxt, node, 0);
/*
* Processed top-level elements:
* ----------------------------
* xsl:variable, xsl:param (QName, in-scope ns,
* expression (vars allowed))
* xsl:attribute-set (QName, in-scope ns)
* xsl:strip-space, xsl:preserve-space (XPath NameTests,
* in-scope ns)
* I *think* global scope, merge with includes
* xsl:output (QName, in-scope ns)
* xsl:key (QName, in-scope ns, pattern,
* expression (vars *not* allowed))
* xsl:decimal-format (QName, needs in-scope ns)
* xsl:namespace-alias (in-scope ns)
* global scope, merge with includes
* xsl:template (last, QName, pattern)
*
* (whitespace-only text-nodes have *not* been removed
* yet; this will be done in xsltParseSequenceConstructor)
*
* Report misplaced child-nodes first.
*/
cur = node->children;
while (cur != NULL) {
if (cur->type == XML_TEXT_NODE) {
xsltTransformError(NULL, style, cur,
"Misplaced text node (content: '%s').\n",
(cur->content != NULL) ? cur->content : BAD_CAST "");
style->errors++;
} else if (cur->type != XML_ELEMENT_NODE) {
xsltTransformError(NULL, style, cur, "Misplaced node.\n");
style->errors++;
}
cur = cur->next;
}
/*
* Skip xsl:import elements; they have been processed
* already.
*/
cur = node->children;
while ((cur != NULL) && xsltParseFindTopLevelElem(cctxt, cur,
BAD_CAST "import", XSLT_NAMESPACE, 1, &cur) == 1)
cur = cur->next;
if (cur == NULL)
goto exit;
start = cur;
/*
* Process all top-level xsl:param elements.
*/
while ((cur != NULL) &&
xsltParseFindTopLevelElem(cctxt, cur,
BAD_CAST "param", XSLT_NAMESPACE, 0, &cur) == 1)
{
xsltParseTopLevelXSLTElem(cctxt, cur, XSLT_FUNC_PARAM);
cur = cur->next;
}
/*
* Process all top-level xsl:variable elements.
*/
cur = start;
while ((cur != NULL) &&
xsltParseFindTopLevelElem(cctxt, cur,
BAD_CAST "variable", XSLT_NAMESPACE, 0, &cur) == 1)
{
xsltParseTopLevelXSLTElem(cctxt, cur, XSLT_FUNC_VARIABLE);
cur = cur->next;
}
/*
* Process all the rest of top-level elements.
*/
cur = start;
while (cur != NULL) {
/*
* Process element nodes.
*/
if (cur->type == XML_ELEMENT_NODE) {
if (cur->ns == NULL) {
xsltTransformError(NULL, style, cur,
"Unexpected top-level element in no namespace.\n");
style->errors++;
cur = cur->next;
continue;
}
/*
* Process all XSLT elements.
*/
if (IS_XSLT_ELEM_FAST(cur)) {
/*
* xsl:import is only allowed at the beginning.
*/
if (IS_XSLT_NAME(cur, "import")) {
xsltTransformError(NULL, style, cur,
"Misplaced xsl:import element.\n");
style->errors++;
cur = cur->next;
continue;
}
/*
* TODO: Change the return type of the parsing functions
* to int.
*/
if (IS_XSLT_NAME(cur, "template")) {
#ifdef WITH_XSLT_DEBUG_PARSING
templates++;
#endif
/*
* TODO: Is the position of xsl:template in the
* tree significant? If not it would be easier to
* parse them at a later stage.
*/
xsltParseXSLTTemplate(cctxt, cur);
} else if (IS_XSLT_NAME(cur, "variable")) {
/* NOP; done already */
} else if (IS_XSLT_NAME(cur, "param")) {
/* NOP; done already */
} else if (IS_XSLT_NAME(cur, "include")) {
if (cur->psvi != NULL)
xsltParseXSLTStylesheetElemCore(cctxt, cur);
else {
xsltTransformError(NULL, style, cur,
"Internal error: "
"(xsltParseXSLTStylesheetElemCore) "
"The xsl:include element was not compiled.\n");
style->errors++;
}
} else if (IS_XSLT_NAME(cur, "strip-space")) {
/* No node info needed. */
xsltParseStylesheetStripSpace(style, cur);
} else if (IS_XSLT_NAME(cur, "preserve-space")) {
/* No node info needed. */
xsltParseStylesheetPreserveSpace(style, cur);
} else if (IS_XSLT_NAME(cur, "output")) {
/* No node-info needed. */
xsltParseStylesheetOutput(style, cur);
} else if (IS_XSLT_NAME(cur, "key")) {
/* TODO: node-info needed for expressions ? */
xsltParseStylesheetKey(style, cur);
} else if (IS_XSLT_NAME(cur, "decimal-format")) {
/* No node-info needed. */
xsltParseStylesheetDecimalFormat(style, cur);
} else if (IS_XSLT_NAME(cur, "attribute-set")) {
xsltParseTopLevelXSLTElem(cctxt, cur,
XSLT_FUNC_ATTRSET);
} else if (IS_XSLT_NAME(cur, "namespace-alias")) {
/* NOP; done already */
} else {
if (cctxt->inode->forwardsCompat) {
/*
* Forwards-compatible mode:
*
* XSLT-1: "if it is a top-level element and
* XSLT 1.0 does not allow such elements as top-level
* elements, then the element must be ignored along
* with its content;"
*/
/*
* TODO: I don't think we should generate a warning.
*/
xsltTransformError(NULL, style, cur,
"Forwards-compatible mode: Ignoring unknown XSLT "
"element '%s'.\n", cur->name);
style->warnings++;
} else {
xsltTransformError(NULL, style, cur,
"Unknown XSLT element '%s'.\n", cur->name);
style->errors++;
}
}
} else {
xsltTopLevelFunction function;
/*
* Process non-XSLT elements, which are in a
* non-NULL namespace.
*/
/*
* QUESTION: What does xsltExtModuleTopLevelLookup()
* do exactly?
*/
function = xsltExtModuleTopLevelLookup(cur->name,
cur->ns->href);
if (function != NULL)
function(style, cur);
#ifdef WITH_XSLT_DEBUG_PARSING
xsltGenericDebug(xsltGenericDebugContext,
"xsltParseXSLTStylesheetElemCore : User-defined "
"data element '%s'.\n", cur->name);
#endif
}
}
cur = cur->next;
}
exit:
#ifdef WITH_XSLT_DEBUG_PARSING
xsltGenericDebug(xsltGenericDebugContext,
"### END of parsing top-level elements of doc '%s'.\n",
node->doc->URL);
xsltGenericDebug(xsltGenericDebugContext,
"### Templates: %d\n", templates);
#ifdef XSLT_REFACTORED
xsltGenericDebug(xsltGenericDebugContext,
"### Max inodes: %d\n", cctxt->maxNodeInfos);
xsltGenericDebug(xsltGenericDebugContext,
"### Max LREs : %d\n", cctxt->maxLREs);
#endif /* XSLT_REFACTORED */
#endif /* WITH_XSLT_DEBUG_PARSING */
xsltCompilerNodePop(cctxt, node);
return(0);
}
/**
* xsltParseXSLTStylesheet:
* @cctxt: the compiler context
* @node: the xsl:stylesheet/xsl:transform element-node
*
* Parses the xsl:stylesheet and xsl:transform element.
*
* <xsl:stylesheet
* id = id
* extension-element-prefixes = tokens
* exclude-result-prefixes = tokens
* version = number>
* <!-- Content: (xsl:import*, top-level-elements) -->
* </xsl:stylesheet>
*
* BIG TODO: The xsl:include stuff.
*
* Called by xsltParseStylesheetTree()
*
* Returns 0 on success, a positive result on errors and
* -1 on API or internal errors.
*/
static int
xsltParseXSLTStylesheetElem(xsltCompilerCtxtPtr cctxt, xmlNodePtr node)
{
xmlNodePtr cur, start;
if ((cctxt == NULL) || (node == NULL) || (node->type != XML_ELEMENT_NODE))
return(-1);
if (node->children == NULL)
goto exit;
/*
* Process top-level elements:
* xsl:import (must be first)
* xsl:include (this is just a pre-processing)
*/
cur = node->children;
/*
* Process xsl:import elements.
* XSLT 1.0: "The xsl:import element children must precede all
* other element children of an xsl:stylesheet element,
* including any xsl:include element children."
*/
while ((cur != NULL) &&
xsltParseFindTopLevelElem(cctxt, cur,
BAD_CAST "import", XSLT_NAMESPACE, 1, &cur) == 1)
{
if (xsltParseStylesheetImport(cctxt->style, cur) != 0) {
cctxt->style->errors++;
}
cur = cur->next;
}
if (cur == NULL)
goto exit;
start = cur;
/*
* Pre-process all xsl:include elements.
*/
cur = start;
while ((cur != NULL) &&
xsltParseFindTopLevelElem(cctxt, cur,
BAD_CAST "include", XSLT_NAMESPACE, 0, &cur) == 1)
{
xsltParseTopLevelXSLTElem(cctxt, cur, XSLT_FUNC_INCLUDE);
cur = cur->next;
}
/*
* Pre-process all xsl:namespace-alias elements.
* URGENT TODO: This won't work correctly: the order of included
* aliases and aliases defined here is significant.
*/
cur = start;
while ((cur != NULL) &&
xsltParseFindTopLevelElem(cctxt, cur,
BAD_CAST "namespace-alias", XSLT_NAMESPACE, 0, &cur) == 1)
{
xsltNamespaceAlias(cctxt->style, cur);
cur = cur->next;
}
if (cctxt->isInclude) {
/*
* If this stylesheet is intended for inclusion, then
* we will process only imports and includes.
*/
goto exit;
}
/*
* Now parse the rest of the top-level elements.
*/
xsltParseXSLTStylesheetElemCore(cctxt, node);
exit:
return(0);
}
#else /* XSLT_REFACTORED */
/**
* xsltParseStylesheetTop:
* @style: the XSLT stylesheet
* @top: the top level "stylesheet" or "transform" element
*
* scan the top level elements of an XSL stylesheet
*/
static void
xsltParseStylesheetTop(xsltStylesheetPtr style, xmlNodePtr top) {
xmlNodePtr cur;
xmlChar *prop;
#ifdef WITH_XSLT_DEBUG_PARSING
int templates = 0;
#endif
if ((top == NULL) || (top->type != XML_ELEMENT_NODE))
return;
prop = xmlGetNsProp(top, (const xmlChar *)"version", NULL);
if (prop == NULL) {
xsltTransformError(NULL, style, top,
"xsl:version is missing: document may not be a stylesheet\n");
if (style != NULL) style->warnings++;
} else {
if ((!xmlStrEqual(prop, (const xmlChar *)"1.0")) &&
(!xmlStrEqual(prop, (const xmlChar *)"1.1"))) {
xsltTransformError(NULL, style, top,
"xsl:version: only 1.0 features are supported\n");
if (style != NULL) {
style->forwards_compatible = 1;
style->warnings++;
}
}
xmlFree(prop);
}
/*
* process xsl:import elements
*/
cur = top->children;
while (cur != NULL) {
if (IS_BLANK_NODE(cur)) {
cur = cur->next;
continue;
}
if (IS_XSLT_ELEM(cur) && IS_XSLT_NAME(cur, "import")) {
if (xsltParseStylesheetImport(style, cur) != 0)
if (style != NULL) style->errors++;
} else
break;
cur = cur->next;
}
/*
* process other top-level elements
*/
while (cur != NULL) {
if (IS_BLANK_NODE(cur)) {
cur = cur->next;
continue;
}
if (cur->type == XML_TEXT_NODE) {
if (cur->content != NULL) {
xsltTransformError(NULL, style, cur,
"misplaced text node: '%s'\n", cur->content);
}
if (style != NULL) style->errors++;
cur = cur->next;
continue;
}
if ((cur->type == XML_ELEMENT_NODE) && (cur->ns == NULL)) {
xsltGenericError(xsltGenericErrorContext,
"Found a top-level element %s with null namespace URI\n",
cur->name);
if (style != NULL) style->errors++;
cur = cur->next;
continue;
}
if ((cur->type == XML_ELEMENT_NODE) && (!(IS_XSLT_ELEM(cur)))) {
xsltTopLevelFunction function;
function = xsltExtModuleTopLevelLookup(cur->name,
cur->ns->href);
if (function != NULL)
function(style, cur);
#ifdef WITH_XSLT_DEBUG_PARSING
xsltGenericDebug(xsltGenericDebugContext,
"xsltParseStylesheetTop : found foreign element %s\n",
cur->name);
#endif
cur = cur->next;
continue;
}
if (IS_XSLT_NAME(cur, "import")) {
xsltTransformError(NULL, style, cur,
"xsltParseStylesheetTop: ignoring misplaced import element\n");
if (style != NULL) style->errors++;
} else if (IS_XSLT_NAME(cur, "include")) {
if (xsltParseStylesheetInclude(style, cur) != 0)
if (style != NULL) style->errors++;
} else if (IS_XSLT_NAME(cur, "strip-space")) {
xsltParseStylesheetStripSpace(style, cur);
} else if (IS_XSLT_NAME(cur, "preserve-space")) {
xsltParseStylesheetPreserveSpace(style, cur);
} else if (IS_XSLT_NAME(cur, "output")) {
xsltParseStylesheetOutput(style, cur);
} else if (IS_XSLT_NAME(cur, "key")) {
xsltParseStylesheetKey(style, cur);
} else if (IS_XSLT_NAME(cur, "decimal-format")) {
xsltParseStylesheetDecimalFormat(style, cur);
} else if (IS_XSLT_NAME(cur, "attribute-set")) {
xsltParseStylesheetAttributeSet(style, cur);
} else if (IS_XSLT_NAME(cur, "variable")) {
xsltParseGlobalVariable(style, cur);
} else if (IS_XSLT_NAME(cur, "param")) {
xsltParseGlobalParam(style, cur);
} else if (IS_XSLT_NAME(cur, "template")) {
#ifdef WITH_XSLT_DEBUG_PARSING
templates++;
#endif
xsltParseStylesheetTemplate(style, cur);
} else if (IS_XSLT_NAME(cur, "namespace-alias")) {
xsltNamespaceAlias(style, cur);
} else {
if ((style != NULL) && (style->forwards_compatible == 0)) {
xsltTransformError(NULL, style, cur,
"xsltParseStylesheetTop: unknown %s element\n",
cur->name);
if (style != NULL) style->errors++;
}
else {
/* do Forwards-Compatible Processing */
xsltTransformError(NULL, style, cur,
"xsltParseStylesheetTop: ignoring unknown %s element\n",
cur->name);
if (style != NULL) style->warnings++;
}
}
cur = cur->next;
}
#ifdef WITH_XSLT_DEBUG_PARSING
xsltGenericDebug(xsltGenericDebugContext,
"parsed %d templates\n", templates);
#endif
}
#endif /* else of XSLT_REFACTORED */
#ifdef XSLT_REFACTORED
/**
* xsltParseSimplifiedStylesheetTree:
*
* @style: the stylesheet (TODO: Change this to the compiler context)
* @doc: the document containing the stylesheet.
* @node: the node where the stylesheet is rooted at
*
* Returns 0 in case of success, a positive result if an error occurred
* and -1 on API and internal errors.
*/
static int
xsltParseSimplifiedStylesheetTree(xsltCompilerCtxtPtr cctxt,
xmlDocPtr doc,
xmlNodePtr node)
{
xsltTemplatePtr templ;
if ((cctxt == NULL) || (node == NULL))
return(-1);
if (xsltParseAttrXSLTVersion(cctxt, node, 0) == XSLT_ELEMENT_CATEGORY_LRE)
{
/*
* TODO: Adjust report, since this might be an
* embedded stylesheet.
*/
xsltTransformError(NULL, cctxt->style, node,
"The attribute 'xsl:version' is missing; cannot identify "
"this document as an XSLT stylesheet document.\n");
cctxt->style->errors++;
return(1);
}
#ifdef WITH_XSLT_DEBUG_PARSING
xsltGenericDebug(xsltGenericDebugContext,
"xsltParseSimplifiedStylesheetTree: document is stylesheet\n");
#endif
/*
* Create and link the template
*/
templ = xsltNewTemplate();
if (templ == NULL) {
return(-1);
}
templ->next = cctxt->style->templates;
cctxt->style->templates = templ;
templ->match = xmlStrdup(BAD_CAST "/");
/*
* Note that we push the document-node in this special case.
*/
xsltCompilerNodePush(cctxt, (xmlNodePtr) doc);
/*
* In every case, we need to have
* the in-scope namespaces of the element, where the
* stylesheet is rooted at, regardless if it's an XSLT
* instruction or a literal result instruction (or if
* this is an embedded stylesheet).
*/
cctxt->inode->inScopeNs =
xsltCompilerBuildInScopeNsList(cctxt, node);
/*
* Parse the content and register the match-pattern.
*/
xsltParseSequenceConstructor(cctxt, node);
xsltCompilerNodePop(cctxt, (xmlNodePtr) doc);
templ->elem = (xmlNodePtr) doc;
templ->content = node;
xsltAddTemplate(cctxt->style, templ, NULL, NULL);
cctxt->style->literal_result = 1;
return(0);
}
#ifdef XSLT_REFACTORED_XSLT_NSCOMP
/**
* xsltRestoreDocumentNamespaces:
* @ns: map of namespaces
* @doc: the document
*
* Restore the namespaces for the document
*
* Returns 0 in case of success, -1 in case of failure
*/
int
xsltRestoreDocumentNamespaces(xsltNsMapPtr ns, xmlDocPtr doc)
{
if (doc == NULL)
return(-1);
/*
* Revert the changes we have applied to the namespace-URIs of
* ns-decls.
*/
while (ns != NULL) {
if ((ns->doc == doc) && (ns->ns != NULL)) {
ns->ns->href = ns->origNsName;
ns->origNsName = NULL;
ns->ns = NULL;
}
ns = ns->next;
}
return(0);
}
#endif /* XSLT_REFACTORED_XSLT_NSCOMP */
/**
* xsltParseStylesheetProcess:
* @style: the XSLT stylesheet (the current stylesheet-level)
* @doc: and xmlDoc parsed XML
*
* Parses an XSLT stylesheet, adding the associated structures.
* Called by:
* xsltParseStylesheetImportedDoc() (xslt.c)
* xsltParseStylesheetInclude() (imports.c)
*
* Returns the value of the @style parameter if everything
* went right, NULL if something went amiss.
*/
xsltStylesheetPtr
xsltParseStylesheetProcess(xsltStylesheetPtr style, xmlDocPtr doc)
{
xsltCompilerCtxtPtr cctxt;
xmlNodePtr cur;
int oldIsSimplifiedStylesheet;
xsltInitGlobals();
if ((style == NULL) || (doc == NULL))
return(NULL);
cctxt = XSLT_CCTXT(style);
cur = xmlDocGetRootElement(doc);
if (cur == NULL) {
xsltTransformError(NULL, style, (xmlNodePtr) doc,
"xsltParseStylesheetProcess : empty stylesheet\n");
return(NULL);
}
oldIsSimplifiedStylesheet = cctxt->simplified;
if ((IS_XSLT_ELEM(cur)) &&
((IS_XSLT_NAME(cur, "stylesheet")) ||
(IS_XSLT_NAME(cur, "transform")))) {
#ifdef WITH_XSLT_DEBUG_PARSING
xsltGenericDebug(xsltGenericDebugContext,
"xsltParseStylesheetProcess : found stylesheet\n");
#endif
cctxt->simplified = 0;
style->literal_result = 0;
} else {
cctxt->simplified = 1;
style->literal_result = 1;
}
/*
* Pre-process the stylesheet if not already done before.
* This will remove PIs and comments, merge adjacent
* text nodes, internalize strings, etc.
*/
if (! style->nopreproc)
xsltParsePreprocessStylesheetTree(cctxt, cur);
/*
* Parse and compile the stylesheet.
*/
if (style->literal_result == 0) {
if (xsltParseXSLTStylesheetElem(cctxt, cur) != 0)
return(NULL);
} else {
if (xsltParseSimplifiedStylesheetTree(cctxt, doc, cur) != 0)
return(NULL);
}
cctxt->simplified = oldIsSimplifiedStylesheet;
return(style);
}
#else /* XSLT_REFACTORED */
/**
* xsltParseStylesheetProcess:
* @ret: the XSLT stylesheet (the current stylesheet-level)
* @doc: and xmlDoc parsed XML
*
* Parses an XSLT stylesheet, adding the associated structures.
* Called by:
* xsltParseStylesheetImportedDoc() (xslt.c)
* xsltParseStylesheetInclude() (imports.c)
*
* Returns the value of the @style parameter if everything
* went right, NULL if something went amiss.
*/
xsltStylesheetPtr
xsltParseStylesheetProcess(xsltStylesheetPtr ret, xmlDocPtr doc) {
xmlNodePtr cur;
xsltInitGlobals();
if (doc == NULL)
return(NULL);
if (ret == NULL)
return(ret);
/*
* First steps, remove blank nodes,
* locate the xsl:stylesheet element and the
* namespace declaration.
*/
cur = xmlDocGetRootElement(doc);
if (cur == NULL) {
xsltTransformError(NULL, ret, (xmlNodePtr) doc,
"xsltParseStylesheetProcess : empty stylesheet\n");
return(NULL);
}
if ((IS_XSLT_ELEM(cur)) &&
((IS_XSLT_NAME(cur, "stylesheet")) ||
(IS_XSLT_NAME(cur, "transform")))) {
#ifdef WITH_XSLT_DEBUG_PARSING
xsltGenericDebug(xsltGenericDebugContext,
"xsltParseStylesheetProcess : found stylesheet\n");
#endif
ret->literal_result = 0;
xsltParseStylesheetExcludePrefix(ret, cur, 1);
xsltParseStylesheetExtPrefix(ret, cur, 1);
} else {
xsltParseStylesheetExcludePrefix(ret, cur, 0);
xsltParseStylesheetExtPrefix(ret, cur, 0);
ret->literal_result = 1;
}
if (!ret->nopreproc) {
xsltPrecomputeStylesheet(ret, cur);
}
if (ret->literal_result == 0) {
xsltParseStylesheetTop(ret, cur);
} else {
xmlChar *prop;
xsltTemplatePtr template;
/*
* the document itself might be the template, check xsl:version
*/
prop = xmlGetNsProp(cur, (const xmlChar *)"version", XSLT_NAMESPACE);
if (prop == NULL) {
xsltTransformError(NULL, ret, cur,
"xsltParseStylesheetProcess : document is not a stylesheet\n");
return(NULL);
}
#ifdef WITH_XSLT_DEBUG_PARSING
xsltGenericDebug(xsltGenericDebugContext,
"xsltParseStylesheetProcess : document is stylesheet\n");
#endif
if (!xmlStrEqual(prop, (const xmlChar *)"1.0")) {
xsltTransformError(NULL, ret, cur,
"xsl:version: only 1.0 features are supported\n");
/* TODO set up compatibility when not XSLT 1.0 */
ret->warnings++;
}
xmlFree(prop);
/*
* Create and link the template
*/
template = xsltNewTemplate();
if (template == NULL) {
return(NULL);
}
template->next = ret->templates;
ret->templates = template;
template->match = xmlStrdup((const xmlChar *)"/");
/*
* parse the content and register the pattern
*/
xsltParseTemplateContent(ret, (xmlNodePtr) doc);
template->elem = (xmlNodePtr) doc;
template->content = doc->children;
xsltAddTemplate(ret, template, NULL, NULL);
ret->literal_result = 1;
}
return(ret);
}
#endif /* else of XSLT_REFACTORED */
/**
* xsltParseStylesheetImportedDoc:
* @doc: an xmlDoc parsed XML
* @parentStyle: pointer to the parent stylesheet (if it exists)
*
* parse an XSLT stylesheet building the associated structures
* except the processing not needed for imported documents.
*
* Returns a new XSLT stylesheet structure.
*/
xsltStylesheetPtr
xsltParseStylesheetImportedDoc(xmlDocPtr doc,
xsltStylesheetPtr parentStyle) {
xsltStylesheetPtr retStyle;
if (doc == NULL)
return(NULL);
retStyle = xsltNewStylesheet();
if (retStyle == NULL)
return(NULL);
/*
* Set the importing stylesheet module; also used to detect recursion.
*/
retStyle->parent = parentStyle;
/*
* Adjust the string dict.
*/
if (doc->dict != NULL) {
xmlDictFree(retStyle->dict);
retStyle->dict = doc->dict;
#ifdef WITH_XSLT_DEBUG
xsltGenericDebug(xsltGenericDebugContext,
"reusing dictionary from %s for stylesheet\n",
doc->URL);
#endif
xmlDictReference(retStyle->dict);
}
/*
* TODO: Eliminate xsltGatherNamespaces(); we must not restrict
* the stylesheet to containt distinct namespace prefixes.
*/
xsltGatherNamespaces(retStyle);
#ifdef XSLT_REFACTORED
{
xsltCompilerCtxtPtr cctxt;
xsltStylesheetPtr oldCurSheet;
if (parentStyle == NULL) {
xsltPrincipalStylesheetDataPtr principalData;
/*
* Principal stylesheet
* --------------------
*/
retStyle->principal = retStyle;
/*
* Create extra data for the principal stylesheet.
*/
principalData = xsltNewPrincipalStylesheetData();
if (principalData == NULL) {
xsltFreeStylesheet(retStyle);
return(NULL);
}
retStyle->principalData = principalData;
/*
* Create the compilation context
* ------------------------------
* (only once; for the principal stylesheet).
* This is currently the only function where the
* compilation context is created.
*/
cctxt = xsltCompilationCtxtCreate(retStyle);
if (cctxt == NULL) {
xsltFreeStylesheet(retStyle);
return(NULL);
}
retStyle->compCtxt = (void *) cctxt;
cctxt->style = retStyle;
cctxt->dict = retStyle->dict;
cctxt->psData = principalData;
/*
* Push initial dummy node info.
*/
cctxt->depth = -1;
xsltCompilerNodePush(cctxt, (xmlNodePtr) doc);
} else {
/*
* Imported stylesheet.
*/
retStyle->principal = parentStyle->principal;
cctxt = parentStyle->compCtxt;
retStyle->compCtxt = cctxt;
}
/*
* Save the old and set the current stylesheet structure in the
* compilation context.
*/
oldCurSheet = cctxt->style;
cctxt->style = retStyle;
retStyle->doc = doc;
xsltParseStylesheetProcess(retStyle, doc);
cctxt->style = oldCurSheet;
if (parentStyle == NULL) {
/*
* Pop the initial dummy node info.
*/
xsltCompilerNodePop(cctxt, (xmlNodePtr) doc);
} else {
/*
* Clear the compilation context of imported
* stylesheets.
* TODO: really?
*/
/* retStyle->compCtxt = NULL; */
}
/*
* Free the stylesheet if there were errors.
*/
if (retStyle != NULL) {
if (retStyle->errors != 0) {
#ifdef XSLT_REFACTORED_XSLT_NSCOMP
/*
* Restore all changes made to namespace URIs of ns-decls.
*/
if (cctxt->psData->nsMap)
xsltRestoreDocumentNamespaces(cctxt->psData->nsMap, doc);
#endif
/*
* Detach the doc from the stylesheet; otherwise the doc
* will be freed in xsltFreeStylesheet().
*/
retStyle->doc = NULL;
/*
* Cleanup the doc if its the main stylesheet.
*/
if (parentStyle == NULL) {
xsltCleanupStylesheetTree(doc, xmlDocGetRootElement(doc));
if (retStyle->compCtxt != NULL) {
xsltCompilationCtxtFree(retStyle->compCtxt);
retStyle->compCtxt = NULL;
}
}
xsltFreeStylesheet(retStyle);
retStyle = NULL;
}
}
}
#else /* XSLT_REFACTORED */
/*
* Old behaviour.
*/
retStyle->doc = doc;
if (xsltParseStylesheetProcess(retStyle, doc) == NULL) {
retStyle->doc = NULL;
xsltFreeStylesheet(retStyle);
retStyle = NULL;
}
if (retStyle != NULL) {
if (retStyle->errors != 0) {
retStyle->doc = NULL;
if (parentStyle == NULL)
xsltCleanupStylesheetTree(doc,
xmlDocGetRootElement(doc));
xsltFreeStylesheet(retStyle);
retStyle = NULL;
}
}
#endif /* else of XSLT_REFACTORED */
return(retStyle);
}
/**
* xsltParseStylesheetDoc:
* @doc: and xmlDoc parsed XML
*
* parse an XSLT stylesheet, building the associated structures. doc
* is kept as a reference within the returned stylesheet, so changes
* to doc after the parsing will be reflected when the stylesheet
* is applied, and the doc is automatically freed when the
* stylesheet is closed.
*
* Returns a new XSLT stylesheet structure.
*/
xsltStylesheetPtr
xsltParseStylesheetDoc(xmlDocPtr doc) {
xsltStylesheetPtr ret;
xsltInitGlobals();
ret = xsltParseStylesheetImportedDoc(doc, NULL);
if (ret == NULL)
return(NULL);
xsltResolveStylesheetAttributeSet(ret);
#ifdef XSLT_REFACTORED
/*
* Free the compilation context.
* TODO: Check if it's better to move this cleanup to
* xsltParseStylesheetImportedDoc().
*/
if (ret->compCtxt != NULL) {
xsltCompilationCtxtFree(XSLT_CCTXT(ret));
ret->compCtxt = NULL;
}
#endif
return(ret);
}
/**
* xsltParseStylesheetFile:
* @filename: the filename/URL to the stylesheet
*
* Load and parse an XSLT stylesheet
*
* Returns a new XSLT stylesheet structure.
*/
xsltStylesheetPtr
xsltParseStylesheetFile(const xmlChar* filename) {
xsltSecurityPrefsPtr sec;
xsltStylesheetPtr ret;
xmlDocPtr doc;
xsltInitGlobals();
if (filename == NULL)
return(NULL);
#ifdef WITH_XSLT_DEBUG_PARSING
xsltGenericDebug(xsltGenericDebugContext,
"xsltParseStylesheetFile : parse %s\n", filename);
#endif
/*
* Security framework check
*/
sec = xsltGetDefaultSecurityPrefs();
if (sec != NULL) {
int res;
res = xsltCheckRead(sec, NULL, filename);
if (res == 0) {
xsltTransformError(NULL, NULL, NULL,
"xsltParseStylesheetFile: read rights for %s denied\n",
filename);
return(NULL);
}
}
doc = xsltDocDefaultLoader(filename, NULL, XSLT_PARSE_OPTIONS,
NULL, XSLT_LOAD_START);
if (doc == NULL) {
xsltTransformError(NULL, NULL, NULL,
"xsltParseStylesheetFile : cannot parse %s\n", filename);
return(NULL);
}
ret = xsltParseStylesheetDoc(doc);
if (ret == NULL) {
xmlFreeDoc(doc);
return(NULL);
}
return(ret);
}
/************************************************************************
* *
* Handling of Stylesheet PI *
* *
************************************************************************/
#define CUR (*cur)
#define SKIP(val) cur += (val)
#define NXT(val) cur[(val)]
#define SKIP_BLANKS \
while (IS_BLANK(CUR)) NEXT
#define NEXT ((*cur) ? cur++ : cur)
/**
* xsltParseStylesheetPI:
* @value: the value of the PI
*
* This function checks that the type is text/xml and extracts
* the URI-Reference for the stylesheet
*
* Returns the URI-Reference for the stylesheet or NULL (it need to
* be freed by the caller)
*/
static xmlChar *
xsltParseStylesheetPI(const xmlChar *value) {
const xmlChar *cur;
const xmlChar *start;
xmlChar *val;
xmlChar tmp;
xmlChar *href = NULL;
int isXml = 0;
if (value == NULL)
return(NULL);
cur = value;
while (CUR != 0) {
SKIP_BLANKS;
if ((CUR == 't') && (NXT(1) == 'y') && (NXT(2) == 'p') &&
(NXT(3) == 'e')) {
SKIP(4);
SKIP_BLANKS;
if (CUR != '=')
continue;
NEXT;
if ((CUR != '\'') && (CUR != '"'))
continue;
tmp = CUR;
NEXT;
start = cur;
while ((CUR != 0) && (CUR != tmp))
NEXT;
if (CUR != tmp)
continue;
val = xmlStrndup(start, cur - start);
NEXT;
if (val == NULL)
return(NULL);
if ((xmlStrcasecmp(val, BAD_CAST "text/xml")) &&
(xmlStrcasecmp(val, BAD_CAST "text/xsl"))) {
xmlFree(val);
break;
}
isXml = 1;
xmlFree(val);
} else if ((CUR == 'h') && (NXT(1) == 'r') && (NXT(2) == 'e') &&
(NXT(3) == 'f')) {
SKIP(4);
SKIP_BLANKS;
if (CUR != '=')
continue;
NEXT;
if ((CUR != '\'') && (CUR != '"'))
continue;
tmp = CUR;
NEXT;
start = cur;
while ((CUR != 0) && (CUR != tmp))
NEXT;
if (CUR != tmp)
continue;
if (href == NULL)
href = xmlStrndup(start, cur - start);
NEXT;
} else {
while ((CUR != 0) && (!IS_BLANK(CUR)))
NEXT;
}
}
if (!isXml) {
if (href != NULL)
xmlFree(href);
href = NULL;
}
return(href);
}
/**
* xsltLoadStylesheetPI:
* @doc: a document to process
*
* This function tries to locate the stylesheet PI in the given document
* If found, and if contained within the document, it will extract
* that subtree to build the stylesheet to process @doc (doc itself will
* be modified). If found but referencing an external document it will
* attempt to load it and generate a stylesheet from it. In both cases,
* the resulting stylesheet and the document need to be freed once the
* transformation is done.
*
* Returns a new XSLT stylesheet structure or NULL if not found.
*/
xsltStylesheetPtr
xsltLoadStylesheetPI(xmlDocPtr doc) {
xmlNodePtr child;
xsltStylesheetPtr ret = NULL;
xmlChar *href = NULL;
xmlURIPtr URI;
xsltInitGlobals();
if (doc == NULL)
return(NULL);
/*
* Find the text/xml stylesheet PI id any before the root
*/
child = doc->children;
while ((child != NULL) && (child->type != XML_ELEMENT_NODE)) {
if ((child->type == XML_PI_NODE) &&
(xmlStrEqual(child->name, BAD_CAST "xml-stylesheet"))) {
href = xsltParseStylesheetPI(child->content);
if (href != NULL)
break;
}
child = child->next;
}
/*
* If found check the href to select processing
*/
if (href != NULL) {
#ifdef WITH_XSLT_DEBUG_PARSING
xsltGenericDebug(xsltGenericDebugContext,
"xsltLoadStylesheetPI : found PI href=%s\n", href);
#endif
URI = xmlParseURI((const char *) href);
if (URI == NULL) {
xsltTransformError(NULL, NULL, child,
"xml-stylesheet : href %s is not valid\n", href);
xmlFree(href);
return(NULL);
}
if ((URI->fragment != NULL) && (URI->scheme == NULL) &&
(URI->opaque == NULL) && (URI->authority == NULL) &&
(URI->server == NULL) && (URI->user == NULL) &&
(URI->path == NULL) && (URI->query == NULL)) {
xmlAttrPtr ID;
#ifdef WITH_XSLT_DEBUG_PARSING
xsltGenericDebug(xsltGenericDebugContext,
"xsltLoadStylesheetPI : Reference to ID %s\n", href);
#endif
if (URI->fragment[0] == '#')
ID = xmlGetID(doc, (const xmlChar *) &(URI->fragment[1]));
else
ID = xmlGetID(doc, (const xmlChar *) URI->fragment);
if (ID == NULL) {
xsltTransformError(NULL, NULL, child,
"xml-stylesheet : no ID %s found\n", URI->fragment);
} else {
xmlDocPtr fake;
xmlNodePtr subtree, newtree;
xmlNsPtr ns;
#ifdef WITH_XSLT_DEBUG
xsltGenericDebug(xsltGenericDebugContext,
"creating new document from %s for embedded stylesheet\n",
doc->URL);
#endif
/*
* move the subtree in a new document passed to
* the stylesheet analyzer
*/
subtree = ID->parent;
fake = xmlNewDoc(NULL);
if (fake != NULL) {
/*
* Should the dictionary still be shared even though
* the nodes are being copied rather than moved?
*/
fake->dict = doc->dict;
xmlDictReference(doc->dict);
#ifdef WITH_XSLT_DEBUG
xsltGenericDebug(xsltGenericDebugContext,
"reusing dictionary from %s for embedded stylesheet\n",
doc->URL);
#endif
newtree = xmlDocCopyNode(subtree, fake, 1);
fake->URL = xmlNodeGetBase(doc, subtree->parent);
#ifdef WITH_XSLT_DEBUG
xsltGenericDebug(xsltGenericDebugContext,
"set base URI for embedded stylesheet as %s\n",
fake->URL);
#endif
/*
* Add all namespaces in scope of embedded stylesheet to
* root element of newly created stylesheet document
*/
while ((subtree = subtree->parent) != (xmlNodePtr)doc) {
for (ns = subtree->ns; ns; ns = ns->next) {
xmlNewNs(newtree, ns->href, ns->prefix);
}
}
xmlAddChild((xmlNodePtr)fake, newtree);
ret = xsltParseStylesheetDoc(fake);
if (ret == NULL)
xmlFreeDoc(fake);
}
}
} else {
xmlChar *URL, *base;
/*
* Reference to an external stylesheet
*/
base = xmlNodeGetBase(doc, (xmlNodePtr) doc);
URL = xmlBuildURI(href, base);
if (URL != NULL) {
#ifdef WITH_XSLT_DEBUG_PARSING
xsltGenericDebug(xsltGenericDebugContext,
"xsltLoadStylesheetPI : fetching %s\n", URL);
#endif
ret = xsltParseStylesheetFile(URL);
xmlFree(URL);
} else {
#ifdef WITH_XSLT_DEBUG_PARSING
xsltGenericDebug(xsltGenericDebugContext,
"xsltLoadStylesheetPI : fetching %s\n", href);
#endif
ret = xsltParseStylesheetFile(href);
}
if (base != NULL)
xmlFree(base);
}
xmlFreeURI(URI);
xmlFree(href);
}
return(ret);
}