void
xsltApplyAttributeSet(xsltTransformContextPtr ctxt, xmlNodePtr node,
xmlNodePtr inst ATTRIBUTE_UNUSED,
const xmlChar * attributes)
{
const xmlChar *ncname = NULL;
const xmlChar *prefix = NULL;
const xmlChar *attrib, *endattr;
xsltAttrElemPtr values;
xsltStylesheetPtr style;
if (attributes == NULL) {
return;
}
attrib = attributes;
while (*attrib != 0) {
while (IS_BLANK(*attrib))
attrib++;
if (*attrib == 0)
break;
endattr = attrib;
while ((*endattr != 0) && (!IS_BLANK(*endattr)))
endattr++;
attrib = xmlDictLookup(ctxt->dict, attrib, endattr - attrib);
if (attrib) {
#ifdef WITH_XSLT_DEBUG_ATTRIBUTES
xsltGenericDebug(xsltGenericDebugContext,
"apply attribute set %s\n", attrib);
#endif
ncname = xsltSplitQName(ctxt->dict, attrib, &prefix);
style = ctxt->style;
#ifdef WITH_DEBUGGER
if ((style != NULL) && (style->attributeSets != NULL) &&
(ctxt->debugStatus != XSLT_DEBUG_NONE)) {
values =
xmlHashLookup2(style->attributeSets, ncname, prefix);
if ((values != NULL) && (values->attr != NULL))
xslHandleDebugger(values->attr->parent, node, NULL,
ctxt);
}
#endif
while (style != NULL) {
values =
xmlHashLookup2(style->attributeSets, ncname, prefix);
while (values != NULL) {
if (values->attr != NULL) {
xsltAttributeInternal(ctxt, node, values->attr,
values->attr->psvi, 1);
}
values = values->next;
}
style = xsltNextImport(style);
}
}
attrib = endattr;
}
}
/**
* xsltAttribute:
* @ctxt: a XSLT process context
* @node: the current node in the source tree
* @inst: the xsl:attribute element
* @comp: precomputed information
*
* Process the xslt attribute node on the source node
*/
void
xsltAttribute(xsltTransformContextPtr ctxt,
xmlNodePtr contextNode,
xmlNodePtr inst,
xsltStylePreCompPtr castedComp)
{
#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 xsltAttribute(): "
"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;
}
/*
* 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;
}
/**
* 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;
xsltAttrSetPtr set;
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) {
xmlNsPtr ns;
const xmlChar *nsUri = NULL;
#ifdef WITH_XSLT_DEBUG_ATTRIBUTES
xsltGenericDebug(xsltGenericDebugContext,
"apply attribute set %s\n", curstr);
#endif
if (xmlValidateQName(curstr, 0)) {
xsltTransformError(ctxt, NULL, inst,
"The name '%s' in use-attribute-sets is not a valid "
"QName.\n", curstr);
return;
}
ncname = xsltSplitQName(ctxt->dict, curstr, &prefix);
if (prefix != NULL) {
ns = xmlSearchNs(inst->doc, inst, prefix);
if (ns == NULL) {
xsltTransformError(ctxt, NULL, inst,
"use-attribute-set : No namespace found for QName "
"'%s:%s'\n", prefix, ncname);
return;
}
nsUri = ns->href;
}
style = ctxt->style;
#ifdef WITH_DEBUGGER
if ((style != NULL) &&
(style->attributeSets != NULL) &&
(ctxt->debugStatus != XSLT_DEBUG_NONE))
{
set = xmlHashLookup2(style->attributeSets, ncname, nsUri);
if ((set != NULL) && (set->attrs != NULL) &&
(set->attrs->attr != NULL))
xslHandleDebugger(set->attrs->attr->parent, node, NULL,
ctxt);
}
#endif
/*
* Lookup the referenced attribute-set. All attribute sets were
* moved to the top stylesheet so there's no need to iterate
* imported stylesheets
*/
set = xmlHashLookup2(style->attributeSets, ncname, nsUri);
if (set != NULL) {
xsltAttrElemPtr cur = set->attrs;
while (cur != NULL) {
if (cur->attr != NULL) {
xsltAttribute(ctxt, node, cur->attr,
cur->attr->psvi);
}
cur = cur->next;
}
}
}
curstr = endstr;
}
}
/**
* 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;
}
}
/**
* xsltAttributeInternal:
* @ctxt: a XSLT process context
* @node: the 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 node,
xmlNodePtr inst,
xsltStylePreCompPtr castedComp,
int fromAttributeSet) {
#ifdef XSLT_REFACTORED
xsltStyleItemAttributePtr comp =
(xsltStyleItemAttributePtr) castedComp;
/*
* TODO: Change the fields of the compiled struct:
* 1) @name (char)
* 2) @nameType (String, AVT)
* 3) @nsName (char)
* 4) nsNameType (None, String, AVT)
*/
#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) || (node == NULL) || (inst == NULL))
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 instruction was no 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
* ----------------
*/
if (!comp->has_name) /* TODO: raise error */
return;
#ifdef WITH_DEBUGGER
if (ctxt->debugStatus != XSLT_DEBUG_NONE)
xslHandleDebugger(inst, node, 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 */
}
name = xsltSplitQName(ctxt->dict, prop, &prefix);
xmlFree(prop);
} else {
name = xsltSplitQName(ctxt->dict, comp->name, &prefix);
}
if (!xmlStrncasecmp(prefix, (xmlChar *) "xmlns", 5)) {
#ifdef WITH_XSLT_DEBUG_PARSING
xsltGenericDebug(xsltGenericDebugContext,
"xsltAttribute: xmlns prefix forbidden\n");
#endif
/*
* SPEC XSLT 1.0:
* "It is an error if the string that results from instantiating
* the attribute value template is not a QName or is the string
* xmlns. An XSLT processor may signal the error; if it does not
* signal the error, it must recover by not adding the attribute
* to the result tree."
* TODO: Decide which way to go here.
*/
goto error;
}
/*
* Process namespace semantics
* ---------------------------
*
* Evaluate the namespace name.
*/
if (comp->has_ns) {
if (comp->ns != NULL) {
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);
};
} 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 effective prefix '%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);
} else
nsName = ns->href;
}
if (fromAttributeSet) {
/*
* I think 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).
*/
attr = xmlHasNsProp(targetElem, name, nsName);
if (attr != NULL)
return;
}
/*
* 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"
*/
/*
* 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 not?
*
* 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) {
ns = xsltTreeAcquireStoredNs(ctxt->document->doc, nsName,
prefix);
}
}
#endif
if (nsName != NULL) {
/*
* The owner-element might be in the same namespace.
*/
if ((targetElem->ns != NULL) &&
(targetElem->ns->prefix != NULL) &&
xmlStrEqual(targetElem->ns->href, nsName))
{
ns = targetElem->ns;
goto namespace_finished;
}
if (prefix != NULL) {
/*
* Search by ns-prefix.
*/
ns = xmlSearchNs(targetElem->doc, targetElem, prefix);
if ((ns != NULL) && (xmlStrEqual(ns->href, nsName))) {
goto namespace_finished;
}
}
/*
* Fallback to a search by ns-name.
*/
ns = xmlSearchNsByHref(targetElem->doc, targetElem, nsName);
if ((ns != NULL) && (ns->prefix != NULL)) {
goto namespace_finished;
}
/*
* OK, we need to declare the namespace on the target element.
*/
if (prefix) {
if (targetElem->nsDef != NULL) {
ns = targetElem->nsDef;
do {
if ((ns->prefix) && xmlStrEqual(ns->prefix, prefix)) {
/*
* The prefix is aready occupied.
*/
break;
}
ns = ns->next;
} while (ns != NULL);
if (ns == NULL) {
ns = xmlNewNs(targetElem, nsName, prefix);
goto namespace_finished;
}
}
}
/*
* Generate a new prefix.
*/
{
const xmlChar *basepref = prefix;
xmlChar pref[30];
int counter = 1;
if (prefix != NULL)
basepref = prefix;
else
basepref = xmlStrdup(BAD_CAST "ns");
do {
snprintf((char *) pref, 30, "%s%d",
basepref, counter++);
ns = xmlSearchNs(targetElem->doc, targetElem, BAD_CAST pref);
if (counter > 1000) {
xsltTransformError(ctxt, NULL, inst,
"Namespace fixup error: Failed to compute a "
"new unique ns-prefix for the generated attribute "
"{%s}%s'.\n", nsName, name);
ns = NULL;
break;
}
} while (ns != NULL);
if (basepref != prefix)
xmlFree((xmlChar *)basepref);
ns = xmlNewNs(targetElem, nsName, BAD_CAST pref);
}
namespace_finished:
if (ns == NULL) {
xsltTransformError(ctxt, NULL, inst,
"Namespace fixup error: Failed to acquire an in-scope "
"namespace binding of the generated attribute '{%s}%s'.\n",
nsName, name);
/*
* TODO: Should we just stop here?
*/
}
}
/*
* 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 origTxt = inst->children, copyTxt;
/*
* Optimization: if the content is just 1 text node, then
* just need to copy it over, or just assign it to the result
* if the string is shared.
*/
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 = origTxt->content;
/*
* Copy "disable-output-escaping" information.
* TODO: Does this have any effect for attribute values
* anyway?
*/
if (origTxt->name == xmlStringTextNoenc)
copyTxt->name = xmlStringTextNoenc;
} else {
/*
* Copy the value.
*/
copyTxt = xmlNewText(origTxt->content);
if (copyTxt == NULL) /* TODO: report error */
goto error;
/*
* Copy "disable-output-escaping" information.
* TODO: Does this have any effect for attribute values
* anyway?
*/
if (origTxt->name == xmlStringTextNoenc)
copyTxt->name = xmlStringTextNoenc;
}
if (copyTxt != NULL) {
copyTxt->doc = attr->doc;
xmlAddChild((xmlNodePtr) attr, copyTxt);
}
} else {
/*
* The sequence constructor might be complex, so instantiate it.
*/
value = xsltEvalTemplateString(ctxt, node, 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?
*/
attr = xmlSetNsProp(ctxt->insert, ns, name,
(const xmlChar *) "");
}
}
error:
return;
}
