#include "config.h"
#include "XSLStyleSheet.h"
#ifdef KHTML_XSLT
#include "DocLoader.h"
#include "Document.h"
#include "Node.h"
#include "XSLImportRule.h"
#include "loader.h"
#include "XMLTokenizer.h"
#include <libxml/uri.h>
#include <libxslt/xsltutils.h>
namespace WebCore {
#define IS_BLANK_NODE(n) \
(((n)->type == XML_TEXT_NODE) && (xsltIsBlank((n)->content)))
XSLStyleSheet::XSLStyleSheet(XSLImportRule* parentRule, const String& href)
: StyleSheet(parentRule, href)
, m_ownerDocument(0)
, m_stylesheetDoc(0)
, m_embedded(false)
, m_processed(false) , m_stylesheetDocTaken(false)
{
}
XSLStyleSheet::XSLStyleSheet(Node* parentNode, const String& href, bool embedded)
: StyleSheet(parentNode, href)
, m_ownerDocument(parentNode->document())
, m_stylesheetDoc(0)
, m_embedded(embedded)
, m_processed(true) , m_stylesheetDocTaken(false)
{
}
XSLStyleSheet::~XSLStyleSheet()
{
if (!m_stylesheetDocTaken)
xmlFreeDoc(m_stylesheetDoc);
}
bool XSLStyleSheet::isLoading()
{
unsigned len = length();
for (unsigned i = 0; i < len; ++i) {
StyleBase* rule = item(i);
if (rule->isImportRule()) {
XSLImportRule* import = static_cast<XSLImportRule*>(rule);
if (import->isLoading())
return true;
}
}
return false;
}
void XSLStyleSheet::checkLoaded()
{
if (isLoading())
return;
if (parent())
parent()->checkLoaded();
if (m_parentNode)
m_parentNode->sheetLoaded();
}
xmlDocPtr XSLStyleSheet::document()
{
if (m_embedded && ownerDocument())
return (xmlDocPtr)ownerDocument()->transformSource();
return m_stylesheetDoc;
}
void XSLStyleSheet::clearDocuments()
{
m_stylesheetDoc = 0;
unsigned len = length();
for (unsigned i = 0; i < len; ++i) {
StyleBase* rule = item(i);
if (rule->isImportRule()) {
XSLImportRule* import = static_cast<XSLImportRule*>(rule);
if (import->styleSheet())
import->styleSheet()->clearDocuments();
}
}
}
DocLoader* XSLStyleSheet::docLoader()
{
if (!m_ownerDocument)
return 0;
return m_ownerDocument->docLoader();
}
bool XSLStyleSheet::parseString(const String &string, bool strict)
{
const UChar BOM(0xFEFF);
const unsigned char BOMHighByte = *reinterpret_cast<const unsigned char*>(&BOM);
setLoaderForLibXMLCallbacks(docLoader());
if (!m_stylesheetDocTaken)
xmlFreeDoc(m_stylesheetDoc);
m_stylesheetDocTaken = false;
m_stylesheetDoc = xmlReadMemory(reinterpret_cast<const char*>(string.characters()), string.length() * sizeof(UChar),
m_ownerDocument->URL().ascii(),
BOMHighByte == 0xFF ? "UTF-16LE" : "UTF-16BE",
XML_PARSE_NOENT | XML_PARSE_DTDATTR | XML_PARSE_NOERROR | XML_PARSE_NOWARNING | XML_PARSE_NOCDATA);
loadChildSheets();
setLoaderForLibXMLCallbacks(0);
return m_stylesheetDoc;
}
void XSLStyleSheet::loadChildSheets()
{
if (!document())
return;
xmlNodePtr stylesheetRoot = document()->children;
while (stylesheetRoot && stylesheetRoot->type != XML_ELEMENT_NODE)
stylesheetRoot = stylesheetRoot->next;
if (m_embedded) {
xmlAttrPtr idNode = xmlGetID(document(), (const xmlChar*)(href().deprecatedString().utf8().data()));
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 (curr->type == XML_ELEMENT_NODE && 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;
}
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;
}
}
}
void XSLStyleSheet::loadChildSheet(const DeprecatedString& href)
{
RefPtr<XSLImportRule> childRule = new XSLImportRule(this, href);
append(childRule);
childRule->loadSheet();
}
xsltStylesheetPtr XSLStyleSheet::compileStyleSheet()
{
if (m_embedded)
return xsltLoadStylesheetPI(document());
ASSERT(!m_stylesheetDocTaken);
xsltStylesheetPtr result = xsltParseStylesheetDoc(m_stylesheetDoc);
if (result)
m_stylesheetDocTaken = true;
return result;
}
xmlDocPtr XSLStyleSheet::locateStylesheetSubResource(xmlDocPtr parentDoc, const xmlChar* uri)
{
bool matchedParent = (parentDoc == document());
unsigned len = length();
for (unsigned i = 0; i < len; ++i) {
StyleBase* rule = item(i);
if (rule->isImportRule()) {
XSLImportRule* import = static_cast<XSLImportRule*>(rule);
XSLStyleSheet* child = import->styleSheet();
if (!child)
continue;
if (matchedParent) {
if (child->processed())
continue;
DeprecatedCString importHref = import->href().deprecatedString().utf8();
xmlChar* base = xmlNodeGetBase(parentDoc, (xmlNodePtr)parentDoc);
xmlChar* childURI = xmlBuildURI((const xmlChar*)(const char*)importHref, base);
bool equalURIs = xmlStrEqual(uri, childURI);
xmlFree(base);
xmlFree(childURI);
if (equalURIs) {
child->markAsProcessed();
return child->document();
}
} else {
xmlDocPtr result = import->styleSheet()->locateStylesheetSubResource(parentDoc, uri);
if (result)
return result;
}
}
}
return 0;
}
void XSLStyleSheet::markAsProcessed()
{
ASSERT(!m_processed);
ASSERT(!m_stylesheetDocTaken);
m_processed = true;
m_stylesheetDocTaken = true;
}
}
#endif // KHTML_XSLT