void XSLStyleSheet::loadChildSheets()
{
if (!document())
return;
xmlNodePtr stylesheetRoot = document()->children;
// Top level children may include other things such as DTD nodes, we ignore
// those.
while (stylesheetRoot && stylesheetRoot->type != XML_ELEMENT_NODE)
stylesheetRoot = stylesheetRoot->next;
if (m_embedded) {
// We have to locate (by ID) the appropriate embedded stylesheet
// element, so that we can walk the import/include list.
xmlAttrPtr idNode = xmlGetID(document(), (const xmlChar*)(finalURL().string().utf8().data()));
if (!idNode)
return;
stylesheetRoot = idNode->parent;
} else {
// FIXME: Need to handle an external URI with a # in it. This is a
// pretty minor edge case, so we'll deal with it later.
}
if (stylesheetRoot) {
// Walk the children of the root element and look for import/include
// elements. Imports must occur first.
xmlNodePtr curr = stylesheetRoot->children;
while (curr) {
if (curr->type != XML_ELEMENT_NODE) {
curr = curr->next;
continue;
}
if (IS_XSLT_ELEM(curr) && IS_XSLT_NAME(curr, "import")) {
xmlChar* uriRef = xsltGetNsProp(curr, (const xmlChar*)"href", XSLT_NAMESPACE);
loadChildSheet(String::fromUTF8((const char*)uriRef));
xmlFree(uriRef);
} else {
break;
}
curr = curr->next;
}
// Now handle includes.
while (curr) {
if (curr->type == XML_ELEMENT_NODE && IS_XSLT_ELEM(curr) && IS_XSLT_NAME(curr, "include")) {
xmlChar* uriRef = xsltGetNsProp(curr, (const xmlChar*)"href", XSLT_NAMESPACE);
loadChildSheet(String::fromUTF8((const char*)uriRef));
xmlFree(uriRef);
}
curr = curr->next;
}
}
}
/**
* xsltEvalStaticAttrValueTemplate:
* @style: the XSLT stylesheet
* @inst: the instruction (or LRE) in the stylesheet holding the
* attribute with an AVT
* @name: the attribute Name
* @ns: the attribute namespace URI
* @found: indicator whether the attribute is present
*
* Check if an attribute value template has a static value, i.e. the
* attribute value does not contain expressions contained in curly braces ({})
*
* Returns the static string value or NULL, must be deallocated by the
* caller.
*/
const xmlChar *
xsltEvalStaticAttrValueTemplate(xsltStylesheetPtr style, xmlNodePtr inst,
const xmlChar *name, const xmlChar *ns, int *found) {
const xmlChar *ret;
xmlChar *expr;
if ((style == NULL) || (inst == NULL) || (name == NULL))
return(NULL);
expr = xsltGetNsProp(inst, name, ns);
if (expr == NULL) {
*found = 0;
return(NULL);
}
*found = 1;
ret = xmlStrchr(expr, '{');
if (ret != NULL) {
xmlFree(expr);
return(NULL);
}
ret = xmlDictLookup(style->dict, expr, -1);
xmlFree(expr);
return(ret);
}
/**
* xsltEvalAttrValueTemplate:
* @ctxt: the XSLT transformation context
* @inst: the instruction (or LRE) in the stylesheet holding the
* attribute with an AVT
* @name: the attribute QName
* @ns: the attribute namespace URI
*
* Evaluate a attribute value template, i.e. the attribute value can
* contain expressions contained in curly braces ({}) and those are
* substituted by they computed value.
*
* Returns the computed string value or NULL, must be deallocated by the
* caller.
*/
xmlChar *
xsltEvalAttrValueTemplate(xsltTransformContextPtr ctxt, xmlNodePtr inst,
const xmlChar *name, const xmlChar *ns)
{
xmlChar *ret;
xmlChar *expr;
if ((ctxt == NULL) || (inst == NULL) || (name == NULL))
return(NULL);
expr = xsltGetNsProp(inst, name, ns);
if (expr == NULL)
return(NULL);
/*
* TODO: though now {} is detected ahead, it would still be good to
* optimize both functions to keep the splitted value if the
* attribute content and the XPath precompiled expressions around
*/
ret = xsltAttrTemplateValueProcessNode(ctxt, expr, inst);
#ifdef WITH_XSLT_DEBUG_TEMPLATES
XSLT_TRACE(ctxt,XSLT_TRACE_TEMPLATES,xsltGenericDebug(xsltGenericDebugContext,
"xsltEvalAttrValueTemplate: %s returns %s\n", expr, ret));
#endif
if (expr != NULL)
xmlFree(expr);
return(ret);
}
xmlChar *
xsltEvalAttrValueTemplate(xsltTransformContextPtr ctxt, xmlNodePtr inst,
const xmlChar *name, const xmlChar *ns)
{
xmlChar *ret;
xmlChar *expr;
if ((ctxt == NULL) || (inst == NULL) || (name == NULL))
return(NULL);
expr = xsltGetNsProp(inst, name, ns);
if (expr == NULL)
return(NULL);
ret = xsltAttrTemplateValueProcessNode(ctxt, expr, inst);
#ifdef WITH_XSLT_DEBUG_TEMPLATES
XSLT_TRACE(ctxt,XSLT_TRACE_TEMPLATES,xsltGenericDebug(xsltGenericDebugContext,
"xsltEvalAttrValueTemplate: %s returns %s\n", expr, ret));
#endif
if (expr != NULL)
xmlFree(expr);
return(ret);
}
/**
* xsltNamespaceAlias:
* @style: the XSLT stylesheet
* @node: the xsl:namespace-alias node
*
* Read the stylesheet-prefix and result-prefix attributes, register
* them as well as the corresponding namespace.
*/
void
xsltNamespaceAlias(xsltStylesheetPtr style, xmlNodePtr node) {
xmlChar *sprefix;
xmlNsPtr sNs;
xmlChar *rprefix;
xmlNsPtr rNs;
sprefix = xsltGetNsProp(node, (const xmlChar *)"stylesheet-prefix",
XSLT_NAMESPACE);
if (sprefix == NULL) {
xsltPrintErrorContext(NULL, style, node);
xsltGenericError(xsltGenericErrorContext,
"namespace-alias: stylesheet-prefix attribute missing\n");
return;
}
rprefix = xsltGetNsProp(node, (const xmlChar *)"result-prefix",
XSLT_NAMESPACE);
if (rprefix == NULL) {
xsltPrintErrorContext(NULL, style, node);
xsltGenericError(xsltGenericErrorContext,
"namespace-alias: result-prefix attribute missing\n");
goto error;
}
if (xmlStrEqual(sprefix, (const xmlChar *)"#default")) {
sNs = xmlSearchNs(node->doc, node, NULL);
} else {
sNs = xmlSearchNs(node->doc, node, sprefix);
}
if ((sNs == NULL) || (sNs->href == NULL)) {
xsltPrintErrorContext(NULL, style, node);
xsltGenericError(xsltGenericErrorContext,
"namespace-alias: prefix %s not bound to any namespace\n",
sprefix);
goto error;
}
if (xmlStrEqual(rprefix, (const xmlChar *)"#default")) {
rNs = xmlSearchNs(node->doc, node, NULL);
} else {
rNs = xmlSearchNs(node->doc, node, rprefix);
}
if ((rNs == NULL) || (rNs->href == NULL)) {
xsltPrintErrorContext(NULL, style, node);
xsltGenericError(xsltGenericErrorContext,
"namespace-alias: prefix %s not bound to any namespace\n",
rprefix);
goto error;
}
if (style->nsAliases == NULL)
style->nsAliases = xmlHashCreate(10);
if (style->nsAliases == NULL) {
xsltPrintErrorContext(NULL, style, node);
xsltGenericError(xsltGenericErrorContext,
"namespace-alias: cannot create hash table\n");
goto error;
}
xmlHashAddEntry((xmlHashTablePtr) style->nsAliases,
sNs->href, (void *) rNs->href);
error:
if (sprefix != NULL)
xmlFree(sprefix);
if (rprefix != NULL)
xmlFree(rprefix);
}