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![Amine Khaldi](/assets/img/avatar_default.png)
* Create a branch for some evul shell experiments. svn path=/branches/shell-experiments/; revision=61927
1102 lines
29 KiB
C
1102 lines
29 KiB
C
/*
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* attributes.c: Implementation of the XSLT attributes handling
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*
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* Reference:
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* http://www.w3.org/TR/1999/REC-xslt-19991116
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*
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* See Copyright for the status of this software.
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*
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* daniel@veillard.com
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*/
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#include "precomp.h"
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#define WITH_XSLT_DEBUG_ATTRIBUTES
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#ifdef WITH_XSLT_DEBUG
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#define WITH_XSLT_DEBUG_ATTRIBUTES
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#endif
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/*
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* TODO: merge attribute sets from different import precedence.
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* all this should be precomputed just before the transformation
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* starts or at first hit with a cache in the context.
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* The simple way for now would be to not allow redefinition of
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* attributes once generated in the output tree, possibly costlier.
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*/
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/*
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* Useful macros
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*/
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#ifdef IS_BLANK
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#undef IS_BLANK
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#endif
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#define IS_BLANK(c) (((c) == 0x20) || ((c) == 0x09) || ((c) == 0xA) || \
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((c) == 0x0D))
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#define IS_BLANK_NODE(n) \
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(((n)->type == XML_TEXT_NODE) && (xsltIsBlank((n)->content)))
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/*
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* The in-memory structure corresponding to an XSLT Attribute in
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* an attribute set
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*/
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typedef struct _xsltAttrElem xsltAttrElem;
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typedef xsltAttrElem *xsltAttrElemPtr;
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struct _xsltAttrElem {
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struct _xsltAttrElem *next;/* chained list */
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xmlNodePtr attr; /* the xsl:attribute definition */
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const xmlChar *set; /* or the attribute set */
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const xmlChar *ns; /* and its namespace */
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};
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/************************************************************************
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* *
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* XSLT Attribute handling *
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* *
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************************************************************************/
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/**
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* xsltNewAttrElem:
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* @attr: the new xsl:attribute node
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*
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* Create a new XSLT AttrElem
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*
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* Returns the newly allocated xsltAttrElemPtr or NULL in case of error
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*/
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static xsltAttrElemPtr
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xsltNewAttrElem(xmlNodePtr attr) {
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xsltAttrElemPtr cur;
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cur = (xsltAttrElemPtr) xmlMalloc(sizeof(xsltAttrElem));
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if (cur == NULL) {
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xsltGenericError(xsltGenericErrorContext,
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"xsltNewAttrElem : malloc failed\n");
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return(NULL);
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}
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memset(cur, 0, sizeof(xsltAttrElem));
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cur->attr = attr;
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return(cur);
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}
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/**
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* xsltFreeAttrElem:
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* @attr: an XSLT AttrElem
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*
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* Free up the memory allocated by @attr
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*/
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static void
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xsltFreeAttrElem(xsltAttrElemPtr attr) {
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xmlFree(attr);
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}
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/**
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* xsltFreeAttrElemList:
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* @list: an XSLT AttrElem list
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*
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* Free up the memory allocated by @list
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*/
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static void
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xsltFreeAttrElemList(xsltAttrElemPtr list) {
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xsltAttrElemPtr next;
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while (list != NULL) {
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next = list->next;
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xsltFreeAttrElem(list);
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list = next;
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}
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}
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#ifdef XSLT_REFACTORED
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/*
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* This was moved to xsltParseStylesheetAttributeSet().
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*/
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#else
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/**
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* xsltAddAttrElemList:
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* @list: an XSLT AttrElem list
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* @attr: the new xsl:attribute node
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*
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* Add the new attribute to the list.
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*
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* Returns the new list pointer
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*/
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static xsltAttrElemPtr
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xsltAddAttrElemList(xsltAttrElemPtr list, xmlNodePtr attr) {
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xsltAttrElemPtr next, cur;
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if (attr == NULL)
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return(list);
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if (list == NULL)
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return(xsltNewAttrElem(attr));
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cur = list;
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while (cur != NULL) {
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next = cur->next;
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if (cur->attr == attr)
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return(cur);
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if (cur->next == NULL) {
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cur->next = xsltNewAttrElem(attr);
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return(list);
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}
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cur = next;
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}
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return(list);
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}
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#endif /* XSLT_REFACTORED */
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/**
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* xsltMergeAttrElemList:
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* @list: an XSLT AttrElem list
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* @old: another XSLT AttrElem list
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*
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* Add all the attributes from list @old to list @list,
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* but drop redefinition of existing values.
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*
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* Returns the new list pointer
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*/
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static xsltAttrElemPtr
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xsltMergeAttrElemList(xsltStylesheetPtr style,
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xsltAttrElemPtr list, xsltAttrElemPtr old) {
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xsltAttrElemPtr cur;
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int add;
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while (old != NULL) {
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if ((old->attr == NULL) && (old->set == NULL)) {
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old = old->next;
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continue;
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}
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/*
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* Check that the attribute is not yet in the list
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*/
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cur = list;
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add = 1;
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while (cur != NULL) {
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if ((cur->attr == NULL) && (cur->set == NULL)) {
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if (cur->next == NULL)
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break;
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cur = cur->next;
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continue;
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}
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if ((cur->set != NULL) && (cur->set == old->set)) {
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add = 0;
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break;
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}
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if (cur->set != NULL) {
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if (cur->next == NULL)
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break;
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cur = cur->next;
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continue;
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}
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if (old->set != NULL) {
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if (cur->next == NULL)
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break;
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cur = cur->next;
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continue;
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}
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if (cur->attr == old->attr) {
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xsltGenericError(xsltGenericErrorContext,
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"xsl:attribute-set : use-attribute-sets recursion detected\n");
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return(list);
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}
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if (cur->next == NULL)
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break;
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cur = cur->next;
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}
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if (add == 1) {
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/*
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* Changed to use the string-dict, rather than duplicating
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* @set and @ns; this fixes bug #340400.
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*/
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if (cur == NULL) {
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list = xsltNewAttrElem(old->attr);
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if (old->set != NULL) {
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list->set = xmlDictLookup(style->dict, old->set, -1);
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if (old->ns != NULL)
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list->ns = xmlDictLookup(style->dict, old->ns, -1);
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}
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} else if (add) {
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cur->next = xsltNewAttrElem(old->attr);
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if (old->set != NULL) {
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cur->next->set = xmlDictLookup(style->dict, old->set, -1);
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if (old->ns != NULL)
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cur->next->ns = xmlDictLookup(style->dict, old->ns, -1);
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}
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}
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}
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old = old->next;
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}
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return(list);
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}
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/************************************************************************
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* *
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* Module interfaces *
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* *
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************************************************************************/
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/**
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* xsltParseStylesheetAttributeSet:
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* @style: the XSLT stylesheet
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* @cur: the "attribute-set" element
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*
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* parse an XSLT stylesheet attribute-set element
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*/
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void
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xsltParseStylesheetAttributeSet(xsltStylesheetPtr style, xmlNodePtr cur) {
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const xmlChar *ncname;
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const xmlChar *prefix;
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xmlChar *value;
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xmlNodePtr child;
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xsltAttrElemPtr attrItems;
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if ((cur == NULL) || (style == NULL) || (cur->type != XML_ELEMENT_NODE))
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return;
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value = xmlGetNsProp(cur, (const xmlChar *)"name", NULL);
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if (value == NULL) {
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xsltGenericError(xsltGenericErrorContext,
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"xsl:attribute-set : name is missing\n");
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return;
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}
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ncname = xsltSplitQName(style->dict, value, &prefix);
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xmlFree(value);
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value = NULL;
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if (style->attributeSets == NULL) {
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#ifdef WITH_XSLT_DEBUG_ATTRIBUTES
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xsltGenericDebug(xsltGenericDebugContext,
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"creating attribute set table\n");
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#endif
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style->attributeSets = xmlHashCreate(10);
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}
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if (style->attributeSets == NULL)
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return;
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attrItems = xmlHashLookup2(style->attributeSets, ncname, prefix);
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/*
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* Parse the content. Only xsl:attribute elements are allowed.
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*/
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child = cur->children;
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while (child != NULL) {
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/*
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* Report invalid nodes.
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*/
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if ((child->type != XML_ELEMENT_NODE) ||
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(child->ns == NULL) ||
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(! IS_XSLT_ELEM(child)))
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{
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if (child->type == XML_ELEMENT_NODE)
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xsltTransformError(NULL, style, child,
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"xsl:attribute-set : unexpected child %s\n",
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child->name);
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else
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xsltTransformError(NULL, style, child,
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"xsl:attribute-set : child of unexpected type\n");
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} else if (!IS_XSLT_NAME(child, "attribute")) {
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xsltTransformError(NULL, style, child,
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"xsl:attribute-set : unexpected child xsl:%s\n",
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child->name);
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} else {
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#ifdef XSLT_REFACTORED
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xsltAttrElemPtr nextAttr, curAttr;
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/*
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* Process xsl:attribute
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* ---------------------
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*/
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#ifdef WITH_XSLT_DEBUG_ATTRIBUTES
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xsltGenericDebug(xsltGenericDebugContext,
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"add attribute to list %s\n", ncname);
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#endif
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/*
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* The following was taken over from
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* xsltAddAttrElemList().
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*/
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if (attrItems == NULL) {
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attrItems = xsltNewAttrElem(child);
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} else {
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curAttr = attrItems;
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while (curAttr != NULL) {
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nextAttr = curAttr->next;
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if (curAttr->attr == child) {
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/*
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* URGENT TODO: Can somebody explain
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* why attrItems is set to curAttr
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* here? Is this somehow related to
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* avoidance of recursions?
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*/
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attrItems = curAttr;
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goto next_child;
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}
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if (curAttr->next == NULL)
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curAttr->next = xsltNewAttrElem(child);
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curAttr = nextAttr;
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}
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}
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/*
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* Parse the xsl:attribute and its content.
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*/
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xsltParseAnyXSLTElem(XSLT_CCTXT(style), child);
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#else
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#ifdef WITH_XSLT_DEBUG_ATTRIBUTES
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xsltGenericDebug(xsltGenericDebugContext,
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"add attribute to list %s\n", ncname);
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#endif
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/*
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* OLD behaviour:
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*/
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attrItems = xsltAddAttrElemList(attrItems, child);
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#endif
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}
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#ifdef XSLT_REFACTORED
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next_child:
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#endif
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child = child->next;
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}
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/*
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* Process attribue "use-attribute-sets".
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*/
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/* TODO check recursion */
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value = xmlGetNsProp(cur, (const xmlChar *)"use-attribute-sets",
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NULL);
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if (value != NULL) {
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const xmlChar *curval, *endval;
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curval = value;
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while (*curval != 0) {
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while (IS_BLANK(*curval)) curval++;
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if (*curval == 0)
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break;
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endval = curval;
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while ((*endval != 0) && (!IS_BLANK(*endval))) endval++;
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curval = xmlDictLookup(style->dict, curval, endval - curval);
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if (curval) {
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const xmlChar *ncname2 = NULL;
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const xmlChar *prefix2 = NULL;
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xsltAttrElemPtr refAttrItems;
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#ifdef WITH_XSLT_DEBUG_ATTRIBUTES
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xsltGenericDebug(xsltGenericDebugContext,
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"xsl:attribute-set : %s adds use %s\n", ncname, curval);
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#endif
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ncname2 = xsltSplitQName(style->dict, curval, &prefix2);
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refAttrItems = xsltNewAttrElem(NULL);
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if (refAttrItems != NULL) {
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refAttrItems->set = ncname2;
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refAttrItems->ns = prefix2;
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attrItems = xsltMergeAttrElemList(style,
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attrItems, refAttrItems);
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xsltFreeAttrElem(refAttrItems);
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}
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}
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curval = endval;
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}
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xmlFree(value);
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value = NULL;
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}
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/*
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* Update the value
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*/
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/*
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* TODO: Why is this dummy entry needed.?
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*/
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if (attrItems == NULL)
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attrItems = xsltNewAttrElem(NULL);
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xmlHashUpdateEntry2(style->attributeSets, ncname, prefix, attrItems, NULL);
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#ifdef WITH_XSLT_DEBUG_ATTRIBUTES
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xsltGenericDebug(xsltGenericDebugContext,
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"updated attribute list %s\n", ncname);
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#endif
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}
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/**
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* xsltGetSAS:
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* @style: the XSLT stylesheet
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* @name: the attribute list name
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* @ns: the attribute list namespace
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*
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* lookup an attribute set based on the style cascade
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*
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* Returns the attribute set or NULL
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*/
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static xsltAttrElemPtr
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xsltGetSAS(xsltStylesheetPtr style, const xmlChar *name, const xmlChar *ns) {
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xsltAttrElemPtr values;
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while (style != NULL) {
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values = xmlHashLookup2(style->attributeSets, name, ns);
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if (values != NULL)
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return(values);
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style = xsltNextImport(style);
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}
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return(NULL);
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}
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|
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/**
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* xsltResolveSASCallback,:
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* @style: the XSLT stylesheet
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*
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* resolve the references in an attribute set.
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*/
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static void
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xsltResolveSASCallback(xsltAttrElemPtr values, xsltStylesheetPtr style,
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const xmlChar *name, const xmlChar *ns,
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ATTRIBUTE_UNUSED const xmlChar *ignored) {
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xsltAttrElemPtr tmp;
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xsltAttrElemPtr refs;
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tmp = values;
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while (tmp != NULL) {
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if (tmp->set != NULL) {
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/*
|
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* Check against cycles !
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*/
|
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if ((xmlStrEqual(name, tmp->set)) && (xmlStrEqual(ns, tmp->ns))) {
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xsltGenericError(xsltGenericErrorContext,
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"xsl:attribute-set : use-attribute-sets recursion detected on %s\n",
|
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name);
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} else {
|
|
#ifdef WITH_XSLT_DEBUG_ATTRIBUTES
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xsltGenericDebug(xsltGenericDebugContext,
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"Importing attribute list %s\n", tmp->set);
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#endif
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refs = xsltGetSAS(style, tmp->set, tmp->ns);
|
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if (refs == NULL) {
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xsltGenericError(xsltGenericErrorContext,
|
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"xsl:attribute-set : use-attribute-sets %s reference missing %s\n",
|
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name, tmp->set);
|
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} else {
|
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/*
|
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* recurse first for cleanup
|
|
*/
|
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xsltResolveSASCallback(refs, style, name, ns, NULL);
|
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/*
|
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* Then merge
|
|
*/
|
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xsltMergeAttrElemList(style, values, refs);
|
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/*
|
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* Then suppress the reference
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|
*/
|
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tmp->set = NULL;
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tmp->ns = NULL;
|
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}
|
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}
|
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}
|
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tmp = tmp->next;
|
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}
|
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}
|
|
|
|
/**
|
|
* xsltMergeSASCallback,:
|
|
* @style: the XSLT stylesheet
|
|
*
|
|
* Merge an attribute set from an imported stylesheet.
|
|
*/
|
|
static void
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|
xsltMergeSASCallback(xsltAttrElemPtr values, xsltStylesheetPtr style,
|
|
const xmlChar *name, const xmlChar *ns,
|
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ATTRIBUTE_UNUSED const xmlChar *ignored) {
|
|
int ret;
|
|
xsltAttrElemPtr topSet;
|
|
|
|
ret = xmlHashAddEntry2(style->attributeSets, name, ns, values);
|
|
if (ret < 0) {
|
|
/*
|
|
* Add failed, this attribute set can be removed.
|
|
*/
|
|
#ifdef WITH_XSLT_DEBUG_ATTRIBUTES
|
|
xsltGenericDebug(xsltGenericDebugContext,
|
|
"attribute set %s present already in top stylesheet"
|
|
" - merging\n", name);
|
|
#endif
|
|
topSet = xmlHashLookup2(style->attributeSets, name, ns);
|
|
if (topSet==NULL) {
|
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xsltGenericError(xsltGenericErrorContext,
|
|
"xsl:attribute-set : logic error merging from imports for"
|
|
" attribute-set %s\n", name);
|
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} else {
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topSet = xsltMergeAttrElemList(style, topSet, values);
|
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xmlHashUpdateEntry2(style->attributeSets, name, ns, topSet, NULL);
|
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}
|
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xsltFreeAttrElemList(values);
|
|
#ifdef WITH_XSLT_DEBUG_ATTRIBUTES
|
|
} else {
|
|
xsltGenericDebug(xsltGenericDebugContext,
|
|
"attribute set %s moved to top stylesheet\n",
|
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name);
|
|
#endif
|
|
}
|
|
}
|
|
|
|
/**
|
|
* xsltResolveStylesheetAttributeSet:
|
|
* @style: the XSLT stylesheet
|
|
*
|
|
* resolve the references between attribute sets.
|
|
*/
|
|
void
|
|
xsltResolveStylesheetAttributeSet(xsltStylesheetPtr style) {
|
|
xsltStylesheetPtr cur;
|
|
|
|
#ifdef WITH_XSLT_DEBUG_ATTRIBUTES
|
|
xsltGenericDebug(xsltGenericDebugContext,
|
|
"Resolving attribute sets references\n");
|
|
#endif
|
|
/*
|
|
* First aggregate all the attribute sets definitions from the imports
|
|
*/
|
|
cur = xsltNextImport(style);
|
|
while (cur != NULL) {
|
|
if (cur->attributeSets != NULL) {
|
|
if (style->attributeSets == NULL) {
|
|
#ifdef WITH_XSLT_DEBUG_ATTRIBUTES
|
|
xsltGenericDebug(xsltGenericDebugContext,
|
|
"creating attribute set table\n");
|
|
#endif
|
|
style->attributeSets = xmlHashCreate(10);
|
|
}
|
|
xmlHashScanFull(cur->attributeSets,
|
|
(xmlHashScannerFull) xsltMergeSASCallback, style);
|
|
/*
|
|
* the attribute lists have either been migrated to style
|
|
* or freed directly in xsltMergeSASCallback()
|
|
*/
|
|
xmlHashFree(cur->attributeSets, NULL);
|
|
cur->attributeSets = NULL;
|
|
}
|
|
cur = xsltNextImport(cur);
|
|
}
|
|
|
|
/*
|
|
* Then resolve all the references and computes the resulting sets
|
|
*/
|
|
if (style->attributeSets != NULL) {
|
|
xmlHashScanFull(style->attributeSets,
|
|
(xmlHashScannerFull) xsltResolveSASCallback, style);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* xsltAttributeInternal:
|
|
* @ctxt: a XSLT process context
|
|
* @node: the current node in the source tree
|
|
* @inst: the xsl:attribute element
|
|
* @comp: precomputed information
|
|
* @fromAttributeSet: the attribute comes from an attribute-set
|
|
*
|
|
* Process the xslt attribute node on the source node
|
|
*/
|
|
static void
|
|
xsltAttributeInternal(xsltTransformContextPtr ctxt,
|
|
xmlNodePtr contextNode,
|
|
xmlNodePtr inst,
|
|
xsltStylePreCompPtr castedComp,
|
|
int fromAttributeSet)
|
|
{
|
|
#ifdef XSLT_REFACTORED
|
|
xsltStyleItemAttributePtr comp =
|
|
(xsltStyleItemAttributePtr) castedComp;
|
|
#else
|
|
xsltStylePreCompPtr comp = castedComp;
|
|
#endif
|
|
xmlNodePtr targetElem;
|
|
xmlChar *prop = NULL;
|
|
const xmlChar *name = NULL, *prefix = NULL, *nsName = NULL;
|
|
xmlChar *value = NULL;
|
|
xmlNsPtr ns = NULL;
|
|
xmlAttrPtr attr;
|
|
|
|
if ((ctxt == NULL) || (contextNode == NULL) || (inst == NULL) ||
|
|
(inst->type != XML_ELEMENT_NODE) )
|
|
return;
|
|
|
|
/*
|
|
* A comp->has_name == 0 indicates that we need to skip this instruction,
|
|
* since it was evaluated to be invalid already during compilation.
|
|
*/
|
|
if (!comp->has_name)
|
|
return;
|
|
/*
|
|
* BIG NOTE: This previously used xsltGetSpecialNamespace() and
|
|
* xsltGetNamespace(), but since both are not appropriate, we
|
|
* will process namespace lookup here to avoid adding yet another
|
|
* ns-lookup function to namespaces.c.
|
|
*/
|
|
/*
|
|
* SPEC XSLT 1.0: Error cases:
|
|
* - Creating nodes other than text nodes during the instantiation of
|
|
* the content of the xsl:attribute element; implementations may
|
|
* either signal the error or ignore the offending nodes."
|
|
*/
|
|
|
|
if (comp == NULL) {
|
|
xsltTransformError(ctxt, NULL, inst,
|
|
"Internal error in xsltAttributeInternal(): "
|
|
"The XSLT 'attribute' instruction was not compiled.\n");
|
|
return;
|
|
}
|
|
/*
|
|
* TODO: Shouldn't ctxt->insert == NULL be treated as an internal error?
|
|
* So report an internal error?
|
|
*/
|
|
if (ctxt->insert == NULL)
|
|
return;
|
|
/*
|
|
* SPEC XSLT 1.0:
|
|
* "Adding an attribute to a node that is not an element;
|
|
* implementations may either signal the error or ignore the attribute."
|
|
*
|
|
* TODO: I think we should signal such errors in the future, and maybe
|
|
* provide an option to ignore such errors.
|
|
*/
|
|
targetElem = ctxt->insert;
|
|
if (targetElem->type != XML_ELEMENT_NODE)
|
|
return;
|
|
|
|
/*
|
|
* SPEC XSLT 1.0:
|
|
* "Adding an attribute to an element after children have been added
|
|
* to it; implementations may either signal the error or ignore the
|
|
* attribute."
|
|
*
|
|
* TODO: We should decide whether not to report such errors or
|
|
* to ignore them; note that we *ignore* if the parent is not an
|
|
* element, but here we report an error.
|
|
*/
|
|
if (targetElem->children != NULL) {
|
|
/*
|
|
* NOTE: Ah! This seems to be intended to support streamed
|
|
* result generation!.
|
|
*/
|
|
xsltTransformError(ctxt, NULL, inst,
|
|
"xsl:attribute: Cannot add attributes to an "
|
|
"element if children have been already added "
|
|
"to the element.\n");
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Process the name
|
|
* ----------------
|
|
*/
|
|
|
|
#ifdef WITH_DEBUGGER
|
|
if (ctxt->debugStatus != XSLT_DEBUG_NONE)
|
|
xslHandleDebugger(inst, contextNode, NULL, ctxt);
|
|
#endif
|
|
|
|
if (comp->name == NULL) {
|
|
/* TODO: fix attr acquisition wrt to the XSLT namespace */
|
|
prop = xsltEvalAttrValueTemplate(ctxt, inst,
|
|
(const xmlChar *) "name", XSLT_NAMESPACE);
|
|
if (prop == NULL) {
|
|
xsltTransformError(ctxt, NULL, inst,
|
|
"xsl:attribute: The attribute 'name' is missing.\n");
|
|
goto error;
|
|
}
|
|
if (xmlValidateQName(prop, 0)) {
|
|
xsltTransformError(ctxt, NULL, inst,
|
|
"xsl:attribute: The effective name '%s' is not a "
|
|
"valid QName.\n", prop);
|
|
/* we fall through to catch any further errors, if possible */
|
|
}
|
|
|
|
/*
|
|
* Reject a name of "xmlns".
|
|
*/
|
|
if (xmlStrEqual(prop, BAD_CAST "xmlns")) {
|
|
xsltTransformError(ctxt, NULL, inst,
|
|
"xsl:attribute: The effective name 'xmlns' is not allowed.\n");
|
|
xmlFree(prop);
|
|
goto error;
|
|
}
|
|
|
|
name = xsltSplitQName(ctxt->dict, prop, &prefix);
|
|
xmlFree(prop);
|
|
} else {
|
|
/*
|
|
* The "name" value was static.
|
|
*/
|
|
#ifdef XSLT_REFACTORED
|
|
prefix = comp->nsPrefix;
|
|
name = comp->name;
|
|
#else
|
|
name = xsltSplitQName(ctxt->dict, comp->name, &prefix);
|
|
#endif
|
|
}
|
|
|
|
/*
|
|
* Process namespace semantics
|
|
* ---------------------------
|
|
*
|
|
* Evaluate the namespace name.
|
|
*/
|
|
if (comp->has_ns) {
|
|
/*
|
|
* The "namespace" attribute was existent.
|
|
*/
|
|
if (comp->ns != NULL) {
|
|
/*
|
|
* No AVT; just plain text for the namespace name.
|
|
*/
|
|
if (comp->ns[0] != 0)
|
|
nsName = comp->ns;
|
|
} else {
|
|
xmlChar *tmpNsName;
|
|
/*
|
|
* Eval the AVT.
|
|
*/
|
|
/* TODO: check attr acquisition wrt to the XSLT namespace */
|
|
tmpNsName = xsltEvalAttrValueTemplate(ctxt, inst,
|
|
(const xmlChar *) "namespace", XSLT_NAMESPACE);
|
|
/*
|
|
* This fixes bug #302020: The AVT might also evaluate to the
|
|
* empty string; this means that the empty string also indicates
|
|
* "no namespace".
|
|
* SPEC XSLT 1.0:
|
|
* "If the string is empty, then the expanded-name of the
|
|
* attribute has a null namespace URI."
|
|
*/
|
|
if ((tmpNsName != NULL) && (tmpNsName[0] != 0))
|
|
nsName = xmlDictLookup(ctxt->dict, BAD_CAST tmpNsName, -1);
|
|
xmlFree(tmpNsName);
|
|
}
|
|
|
|
if (xmlStrEqual(nsName, BAD_CAST "http://www.w3.org/2000/xmlns/")) {
|
|
xsltTransformError(ctxt, NULL, inst,
|
|
"xsl:attribute: Namespace http://www.w3.org/2000/xmlns/ "
|
|
"forbidden.\n");
|
|
goto error;
|
|
}
|
|
if (xmlStrEqual(nsName, XML_XML_NAMESPACE)) {
|
|
prefix = BAD_CAST "xml";
|
|
} else if (xmlStrEqual(prefix, BAD_CAST "xml")) {
|
|
prefix = NULL;
|
|
}
|
|
} else if (prefix != NULL) {
|
|
/*
|
|
* SPEC XSLT 1.0:
|
|
* "If the namespace attribute is not present, then the QName is
|
|
* expanded into an expanded-name using the namespace declarations
|
|
* in effect for the xsl:attribute element, *not* including any
|
|
* default namespace declaration."
|
|
*/
|
|
ns = xmlSearchNs(inst->doc, inst, prefix);
|
|
if (ns == NULL) {
|
|
/*
|
|
* Note that this is treated as an error now (checked with
|
|
* Saxon, Xalan-J and MSXML).
|
|
*/
|
|
xsltTransformError(ctxt, NULL, inst,
|
|
"xsl:attribute: The QName '%s:%s' has no "
|
|
"namespace binding in scope in the stylesheet; "
|
|
"this is an error, since the namespace was not "
|
|
"specified by the instruction itself.\n", prefix, name);
|
|
} else
|
|
nsName = ns->href;
|
|
}
|
|
|
|
if (fromAttributeSet) {
|
|
/*
|
|
* This tries to ensure that xsl:attribute(s) coming
|
|
* from an xsl:attribute-set won't override attribute of
|
|
* literal result elements or of explicit xsl:attribute(s).
|
|
* URGENT TODO: This might be buggy, since it will miss to
|
|
* overwrite two equal attributes both from attribute sets.
|
|
*/
|
|
attr = xmlHasNsProp(targetElem, name, nsName);
|
|
if (attr != NULL)
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Find/create a matching ns-decl in the result tree.
|
|
*/
|
|
ns = NULL;
|
|
|
|
#if 0
|
|
if (0) {
|
|
/*
|
|
* OPTIMIZE TODO: How do we know if we are adding to a
|
|
* fragment or to the result tree?
|
|
*
|
|
* If we are adding to a result tree fragment (i.e., not to the
|
|
* actual result tree), we'll don't bother searching for the
|
|
* ns-decl, but just store it in the dummy-doc of the result
|
|
* tree fragment.
|
|
*/
|
|
if (nsName != NULL) {
|
|
/*
|
|
* TODO: Get the doc of @targetElem.
|
|
*/
|
|
ns = xsltTreeAcquireStoredNs(some doc, nsName, prefix);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
if (nsName != NULL) {
|
|
/*
|
|
* Something about ns-prefixes:
|
|
* SPEC XSLT 1.0:
|
|
* "XSLT processors may make use of the prefix of the QName specified
|
|
* in the name attribute when selecting the prefix used for outputting
|
|
* the created attribute as XML; however, they are not required to do
|
|
* so and, if the prefix is xmlns, they must not do so"
|
|
*/
|
|
/*
|
|
* xsl:attribute can produce a scenario where the prefix is NULL,
|
|
* so generate a prefix.
|
|
*/
|
|
if ((prefix == NULL) || xmlStrEqual(prefix, BAD_CAST "xmlns")) {
|
|
xmlChar *pref = xmlStrdup(BAD_CAST "ns_1");
|
|
|
|
ns = xsltGetSpecialNamespace(ctxt, inst, nsName, pref, targetElem);
|
|
|
|
xmlFree(pref);
|
|
} else {
|
|
ns = xsltGetSpecialNamespace(ctxt, inst, nsName, prefix,
|
|
targetElem);
|
|
}
|
|
if (ns == NULL) {
|
|
xsltTransformError(ctxt, NULL, inst,
|
|
"Namespace fixup error: Failed to acquire an in-scope "
|
|
"namespace binding for the generated attribute '{%s}%s'.\n",
|
|
nsName, name);
|
|
goto error;
|
|
}
|
|
}
|
|
/*
|
|
* Construction of the value
|
|
* -------------------------
|
|
*/
|
|
if (inst->children == NULL) {
|
|
/*
|
|
* No content.
|
|
* TODO: Do we need to put the empty string in ?
|
|
*/
|
|
attr = xmlSetNsProp(ctxt->insert, ns, name, (const xmlChar *) "");
|
|
} else if ((inst->children->next == NULL) &&
|
|
((inst->children->type == XML_TEXT_NODE) ||
|
|
(inst->children->type == XML_CDATA_SECTION_NODE)))
|
|
{
|
|
xmlNodePtr copyTxt;
|
|
|
|
/*
|
|
* xmlSetNsProp() will take care of duplicates.
|
|
*/
|
|
attr = xmlSetNsProp(ctxt->insert, ns, name, NULL);
|
|
if (attr == NULL) /* TODO: report error ? */
|
|
goto error;
|
|
/*
|
|
* This was taken over from xsltCopyText() (transform.c).
|
|
*/
|
|
if (ctxt->internalized &&
|
|
(ctxt->insert->doc != NULL) &&
|
|
(ctxt->insert->doc->dict == ctxt->dict))
|
|
{
|
|
copyTxt = xmlNewText(NULL);
|
|
if (copyTxt == NULL) /* TODO: report error */
|
|
goto error;
|
|
/*
|
|
* This is a safe scenario where we don't need to lookup
|
|
* the dict.
|
|
*/
|
|
copyTxt->content = inst->children->content;
|
|
/*
|
|
* Copy "disable-output-escaping" information.
|
|
* TODO: Does this have any effect for attribute values
|
|
* anyway?
|
|
*/
|
|
if (inst->children->name == xmlStringTextNoenc)
|
|
copyTxt->name = xmlStringTextNoenc;
|
|
} else {
|
|
/*
|
|
* Copy the value.
|
|
*/
|
|
copyTxt = xmlNewText(inst->children->content);
|
|
if (copyTxt == NULL) /* TODO: report error */
|
|
goto error;
|
|
}
|
|
attr->children = attr->last = copyTxt;
|
|
copyTxt->parent = (xmlNodePtr) attr;
|
|
copyTxt->doc = attr->doc;
|
|
/*
|
|
* Copy "disable-output-escaping" information.
|
|
* TODO: Does this have any effect for attribute values
|
|
* anyway?
|
|
*/
|
|
if (inst->children->name == xmlStringTextNoenc)
|
|
copyTxt->name = xmlStringTextNoenc;
|
|
|
|
/*
|
|
* since we create the attribute without content IDness must be
|
|
* asserted as a second step
|
|
*/
|
|
if ((copyTxt->content != NULL) &&
|
|
(xmlIsID(attr->doc, attr->parent, attr)))
|
|
xmlAddID(NULL, attr->doc, copyTxt->content, attr);
|
|
} else {
|
|
/*
|
|
* The sequence constructor might be complex, so instantiate it.
|
|
*/
|
|
value = xsltEvalTemplateString(ctxt, contextNode, inst);
|
|
if (value != NULL) {
|
|
attr = xmlSetNsProp(ctxt->insert, ns, name, value);
|
|
xmlFree(value);
|
|
} else {
|
|
/*
|
|
* TODO: Do we have to add the empty string to the attr?
|
|
* TODO: Does a value of NULL indicate an
|
|
* error in xsltEvalTemplateString() ?
|
|
*/
|
|
attr = xmlSetNsProp(ctxt->insert, ns, name,
|
|
(const xmlChar *) "");
|
|
}
|
|
}
|
|
|
|
error:
|
|
return;
|
|
}
|
|
|
|
/**
|
|
* xsltAttribute:
|
|
* @ctxt: a XSLT process context
|
|
* @node: the node in the source tree.
|
|
* @inst: the xslt attribute node
|
|
* @comp: precomputed information
|
|
*
|
|
* Process the xslt attribute node on the source node
|
|
*/
|
|
void
|
|
xsltAttribute(xsltTransformContextPtr ctxt, xmlNodePtr node,
|
|
xmlNodePtr inst, xsltStylePreCompPtr comp) {
|
|
xsltAttributeInternal(ctxt, node, inst, comp, 0);
|
|
}
|
|
|
|
/**
|
|
* xsltApplyAttributeSet:
|
|
* @ctxt: the XSLT stylesheet
|
|
* @node: the node in the source tree.
|
|
* @inst: the attribute node "xsl:use-attribute-sets"
|
|
* @attrSets: the list of QNames of the attribute-sets to be applied
|
|
*
|
|
* Apply the xsl:use-attribute-sets.
|
|
* If @attrSets is NULL, then @inst will be used to exctract this
|
|
* value.
|
|
* If both, @attrSets and @inst, are NULL, then this will do nothing.
|
|
*/
|
|
void
|
|
xsltApplyAttributeSet(xsltTransformContextPtr ctxt, xmlNodePtr node,
|
|
xmlNodePtr inst,
|
|
const xmlChar *attrSets)
|
|
{
|
|
const xmlChar *ncname = NULL;
|
|
const xmlChar *prefix = NULL;
|
|
const xmlChar *curstr, *endstr;
|
|
xsltAttrElemPtr attrs;
|
|
xsltStylesheetPtr style;
|
|
|
|
if (attrSets == NULL) {
|
|
if (inst == NULL)
|
|
return;
|
|
else {
|
|
/*
|
|
* Extract the value from @inst.
|
|
*/
|
|
if (inst->type == XML_ATTRIBUTE_NODE) {
|
|
if ( ((xmlAttrPtr) inst)->children != NULL)
|
|
attrSets = ((xmlAttrPtr) inst)->children->content;
|
|
|
|
}
|
|
if (attrSets == NULL) {
|
|
/*
|
|
* TODO: Return an error?
|
|
*/
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
/*
|
|
* Parse/apply the list of QNames.
|
|
*/
|
|
curstr = attrSets;
|
|
while (*curstr != 0) {
|
|
while (IS_BLANK(*curstr))
|
|
curstr++;
|
|
if (*curstr == 0)
|
|
break;
|
|
endstr = curstr;
|
|
while ((*endstr != 0) && (!IS_BLANK(*endstr)))
|
|
endstr++;
|
|
curstr = xmlDictLookup(ctxt->dict, curstr, endstr - curstr);
|
|
if (curstr) {
|
|
/*
|
|
* TODO: Validate the QName.
|
|
*/
|
|
|
|
#ifdef WITH_XSLT_DEBUG_curstrUTES
|
|
xsltGenericDebug(xsltGenericDebugContext,
|
|
"apply curstrute set %s\n", curstr);
|
|
#endif
|
|
ncname = xsltSplitQName(ctxt->dict, curstr, &prefix);
|
|
|
|
style = ctxt->style;
|
|
|
|
#ifdef WITH_DEBUGGER
|
|
if ((style != NULL) &&
|
|
(style->attributeSets != NULL) &&
|
|
(ctxt->debugStatus != XSLT_DEBUG_NONE))
|
|
{
|
|
attrs =
|
|
xmlHashLookup2(style->attributeSets, ncname, prefix);
|
|
if ((attrs != NULL) && (attrs->attr != NULL))
|
|
xslHandleDebugger(attrs->attr->parent, node, NULL,
|
|
ctxt);
|
|
}
|
|
#endif
|
|
/*
|
|
* Lookup the referenced curstrute-set.
|
|
*/
|
|
while (style != NULL) {
|
|
attrs =
|
|
xmlHashLookup2(style->attributeSets, ncname, prefix);
|
|
while (attrs != NULL) {
|
|
if (attrs->attr != NULL) {
|
|
xsltAttributeInternal(ctxt, node, attrs->attr,
|
|
attrs->attr->psvi, 1);
|
|
}
|
|
attrs = attrs->next;
|
|
}
|
|
style = xsltNextImport(style);
|
|
}
|
|
}
|
|
curstr = endstr;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* xsltFreeAttributeSetsHashes:
|
|
* @style: an XSLT stylesheet
|
|
*
|
|
* Free up the memory used by attribute sets
|
|
*/
|
|
void
|
|
xsltFreeAttributeSetsHashes(xsltStylesheetPtr style) {
|
|
if (style->attributeSets != NULL)
|
|
xmlHashFree((xmlHashTablePtr) style->attributeSets,
|
|
(xmlHashDeallocator) xsltFreeAttrElemList);
|
|
style->attributeSets = NULL;
|
|
}
|