Safari's transformToDocument() and xsl:import

The end-result of my research is not really going to make you happy. Apparently, Chrome and Safari are doing the same as Opera did until version 9.5: saying they support XSLT, but meanwhile not supporting document() or xsl:import/include. It is not a rights issue. While Opera finally made it with version 9.5 to include external documents and xsl:import/include, Chrome and Safari (by means of Webkit) have not.

The code below is part of WebKit and was checked in in October 2008 and clearly shows that there has been support planned for xsl:import/include. So far I still hope it is some dark security setting somewhere, but no reference thereof anywhere. Remember that libxslt is the processor used by Webkit, and that libxslt supports xsl:import/include and the document function.

Sorry to give you bad news :S.
Here's the piece of the code where the imports are (should be) handled (from http://src.chromium.org/viewvc/chrome/trunk/deps/third_party/WebKit/WebCore/xml/XSLStyleSheet.cpp):

-- Abel --

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*)(href().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(DeprecatedString::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(DeprecatedString::fromUtf8((const char*)uriRef));
                xmlFree(uriRef);
            }
            curr = curr->next;
        }
    }
}

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