xsl_stylesheetimpl.cpp [plain text]
#ifdef KHTML_XSLT
#include "dom/dom_string.h"
#include "dom/dom_exception.h"
#include "xml/dom_nodeimpl.h"
#include "html/html_documentimpl.h"
#include "misc/loader.h"
#include "xsl_stylesheetimpl.h"
#include "xml_tokenizer.h"
#include <kdebug.h>
#include <libxslt/xsltutils.h>
#include <libxml/uri.h>
#define IS_BLANK_NODE(n) \
(((n)->type == XML_TEXT_NODE) && (xsltIsBlank((n)->content)))
using namespace khtml;
using namespace DOM;
namespace DOM {
XSLStyleSheetImpl::XSLStyleSheetImpl(XSLImportRuleImpl *parentRule, DOMString href)
: StyleSheetImpl(parentRule, href)
{
m_lstChildren = new QPtrList<StyleBaseImpl>;
m_ownerDocument = 0;
m_processed = false; }
XSLStyleSheetImpl::XSLStyleSheetImpl(NodeImpl *parentNode, DOMString href, bool embedded)
: StyleSheetImpl(parentNode, href)
{
m_lstChildren = new QPtrList<StyleBaseImpl>;
m_ownerDocument = parentNode->getDocument();
m_embedded = embedded;
m_processed = true; }
XSLStyleSheetImpl::~XSLStyleSheetImpl()
{
if (!m_embedded)
xmlFreeDoc(m_stylesheetDoc);
}
bool XSLStyleSheetImpl::isLoading()
{
for (StyleBaseImpl* rule = m_lstChildren->first(); rule; rule = m_lstChildren->next()) {
if (rule->isImportRule()) {
XSLImportRuleImpl* import = static_cast<XSLImportRuleImpl*>(rule);
if (import->isLoading())
return true;
}
}
return false;
}
void XSLStyleSheetImpl::checkLoaded()
{
if (isLoading())
return;
if (m_parent)
m_parent->checkLoaded();
if (m_parentNode)
m_parentNode->sheetLoaded();
}
void XSLStyleSheetImpl::clearDocuments()
{
m_stylesheetDoc = 0;
for (StyleBaseImpl* rule = m_lstChildren->first(); rule; rule = m_lstChildren->next()) {
if (rule->isImportRule()) {
XSLImportRuleImpl* import = static_cast<XSLImportRuleImpl*>(rule);
if (import->styleSheet())
import->styleSheet()->clearDocuments();
}
}
}
khtml::DocLoader* XSLStyleSheetImpl::docLoader()
{
if (!m_ownerDocument)
return 0;
return m_ownerDocument->docLoader();
}
bool XSLStyleSheetImpl::parseString(const DOMString &string, bool strict)
{
const QChar BOM(0xFEFF);
const unsigned char BOMHighByte = *reinterpret_cast<const unsigned char *>(&BOM);
setLoaderForLibXMLCallbacks(docLoader());
m_stylesheetDoc = xmlReadMemory(reinterpret_cast<const char *>(string.unicode()),
string.length() * sizeof(QChar),
m_ownerDocument->URL().ascii(),
BOMHighByte == 0xFF ? "UTF-16LE" : "UTF-16BE",
XML_PARSE_NOCDATA|XML_PARSE_DTDATTR|XML_PARSE_NOENT);
loadChildSheets();
setLoaderForLibXMLCallbacks(0);
return m_stylesheetDoc;
}
void XSLStyleSheetImpl::loadChildSheets()
{
if (!m_stylesheetDoc)
return;
xmlNodePtr stylesheetRoot = m_stylesheetDoc->children;
while (stylesheetRoot && stylesheetRoot->type != XML_ELEMENT_NODE)
stylesheetRoot = stylesheetRoot->next;
if (m_embedded) {
xmlAttrPtr idNode = xmlGetID(m_stylesheetDoc, (const xmlChar*)(const char*)(href().string().utf8()));
if (!idNode)
return;
stylesheetRoot = idNode->parent;
} else {
}
if (stylesheetRoot) {
xmlNodePtr curr = stylesheetRoot->children;
while (curr) {
if (IS_BLANK_NODE(curr)) {
curr = curr->next;
continue;
}
if (IS_XSLT_ELEM(curr) && IS_XSLT_NAME(curr, "import")) {
xmlChar* uriRef = xsltGetNsProp(curr, (const xmlChar *)"href", XSLT_NAMESPACE);
QString buff = QString::fromUtf8((const char*)uriRef);
loadChildSheet(buff);
} else
break;
curr = curr->next;
}
while (curr) {
if (IS_XSLT_ELEM(curr) && IS_XSLT_NAME(curr, "include")) {
xmlChar* uriRef = xsltGetNsProp(curr, (const xmlChar *)"href", XSLT_NAMESPACE);
QString buff = QString::fromUtf8((const char*)uriRef);
loadChildSheet(buff);
}
curr = curr->next;
}
}
}
void XSLStyleSheetImpl::loadChildSheet(const QString& href)
{
XSLImportRuleImpl* childRule = new XSLImportRuleImpl(this, href);
m_lstChildren->append(childRule);
childRule->loadSheet();
}
XSLStyleSheetImpl* XSLImportRuleImpl::parentStyleSheet() const
{
return (m_parent && m_parent->isXSLStyleSheet()) ? static_cast<XSLStyleSheetImpl*>(m_parent) : 0;
}
xsltStylesheetPtr XSLStyleSheetImpl::compileStyleSheet()
{
if (m_embedded)
return xsltLoadStylesheetPI(m_stylesheetDoc);
else
return xsltParseStylesheetDoc(m_stylesheetDoc);
}
xmlDocPtr XSLStyleSheetImpl::locateStylesheetSubResource(xmlDocPtr parentDoc, const xmlChar* uri)
{
bool matchedParent = (parentDoc == m_stylesheetDoc);
for (StyleBaseImpl* rule = m_lstChildren->first(); rule; rule = m_lstChildren->next()) {
if (rule->isImportRule()) {
XSLImportRuleImpl* import = static_cast<XSLImportRuleImpl*>(rule);
XSLStyleSheetImpl* child = import->styleSheet();
if (!child) continue;
if (matchedParent) {
if (child->processed()) continue;
QCString importHref = import->href().string().utf8();
xmlChar* base = xmlNodeGetBase(parentDoc, (xmlNodePtr)parentDoc);
xmlChar* childURI = xmlBuildURI((const xmlChar*)(const char*)importHref, base);
if (xmlStrEqual(uri, childURI)) {
child->markAsProcessed();
return child->document();
}
}
else {
xmlDocPtr result = import->styleSheet()->locateStylesheetSubResource(parentDoc, uri);
if (result)
return result;
}
}
}
return NULL;
}
XSLImportRuleImpl::XSLImportRuleImpl(StyleBaseImpl* parent, const DOMString &href)
: StyleBaseImpl(parent)
{
m_strHref = href;
m_styleSheet = 0;
m_cachedSheet = 0;
m_loading = false;
}
XSLImportRuleImpl::~XSLImportRuleImpl()
{
if (m_styleSheet) {
m_styleSheet->setParent(0);
m_styleSheet->deref();
}
if (m_cachedSheet)
m_cachedSheet->deref(this);
}
void XSLImportRuleImpl::setStyleSheet(const DOMString& url, const DOMString& sheet)
{
if (m_styleSheet) {
m_styleSheet->setParent(0);
m_styleSheet->deref();
}
m_styleSheet = new XSLStyleSheetImpl(this, url);
m_styleSheet->ref();
XSLStyleSheetImpl* parent = parentStyleSheet();
if (parent)
m_styleSheet->setOwnerDocument(parent->ownerDocument());
m_styleSheet->parseString(sheet);
m_loading = false;
checkLoaded();
}
bool XSLImportRuleImpl::isLoading()
{
return (m_loading || (m_styleSheet && m_styleSheet->isLoading()));
}
void XSLImportRuleImpl::loadSheet()
{
DocLoader* docLoader = 0;
StyleBaseImpl* root = this;
StyleBaseImpl* parent;
while ((parent = root->parent()))
root = parent;
if (root->isXSLStyleSheet())
docLoader = static_cast<XSLStyleSheetImpl*>(root)->docLoader();
DOMString absHref = m_strHref;
XSLStyleSheetImpl* parentSheet = parentStyleSheet();
if (!parentSheet->href().isNull())
absHref = KURL(parentSheet->href().string(),m_strHref.string()).url();
for (parent = static_cast<StyleBaseImpl*>(this)->parent(); parent; parent = parent->parent())
if (absHref == parent->baseURL())
return;
m_cachedSheet = docLoader->requestXSLStyleSheet(absHref);
if (m_cachedSheet) {
m_cachedSheet->ref(this);
if (!m_styleSheet)
m_loading = true;
}
}
}
#endif