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2f2ae146c0
RetroZilla/extensions/transformiix/source/xslt/txMozillaXSLTProcessor.cpp
Ryan Nematz 2f2ae146c0 first commit
2015-10-20 23:03:22 -04:00

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is TransforMiiX XSLT processor code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 2002
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Peter Van der Beken <peterv@propagandism.org>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "txMozillaXSLTProcessor.h"
#include "nsContentCID.h"
#include "nsDOMError.h"
#include "nsIChannel.h"
#include "nsIContent.h"
#include "nsIDOMElement.h"
#include "nsIDOMText.h"
#include "nsIDocument.h"
#include "nsIDOMClassInfo.h"
#include "nsIDOMDocument.h"
#include "nsIDOMDocumentFragment.h"
#include "nsIDOMNodeList.h"
#include "nsIIOService.h"
#include "nsILoadGroup.h"
#include "nsIScriptLoader.h"
#include "nsIStringBundle.h"
#include "nsIURI.h"
#include "nsNetUtil.h"
#include "nsXPathResult.h"
#include "txExecutionState.h"
#include "txMozillaTextOutput.h"
#include "txMozillaXMLOutput.h"
#include "txURIUtils.h"
#include "XMLUtils.h"
#include "txUnknownHandler.h"
#include "txXSLTProcessor.h"
#include "nsIPrincipal.h"
#include "jsapi.h"
#include "nsIEventQueueService.h"
#include "ExprParser.h"
#include "nsIScriptSecurityManager.h"
static NS_DEFINE_CID(kXMLDocumentCID, NS_XMLDOCUMENT_CID);
/**
* Output Handler Factories
*/
class txToDocHandlerFactory : public txAOutputHandlerFactory
{
public:
txToDocHandlerFactory(txExecutionState* aEs,
nsIDOMDocument* aSourceDocument,
nsIDOMDocument* aResultDocument,
nsITransformObserver* aObserver)
: mEs(aEs), mSourceDocument(aSourceDocument),
mResultDocument(aResultDocument), mObserver(aObserver)
{
}
virtual ~txToDocHandlerFactory()
{
}
TX_DECL_TXAOUTPUTHANDLERFACTORY
private:
txExecutionState* mEs;
nsCOMPtr<nsIDOMDocument> mSourceDocument;
nsCOMPtr<nsIDOMDocument> mResultDocument;
nsCOMPtr<nsITransformObserver> mObserver;
};
class txToFragmentHandlerFactory : public txAOutputHandlerFactory
{
public:
txToFragmentHandlerFactory(nsIDOMDocumentFragment* aFragment)
: mFragment(aFragment)
{
}
virtual ~txToFragmentHandlerFactory()
{
}
TX_DECL_TXAOUTPUTHANDLERFACTORY
private:
nsCOMPtr<nsIDOMDocumentFragment> mFragment;
};
nsresult
txToDocHandlerFactory::createHandlerWith(txOutputFormat* aFormat,
txAXMLEventHandler** aHandler)
{
*aHandler = nsnull;
switch (aFormat->mMethod) {
case eMethodNotSet:
case eXMLOutput:
{
*aHandler = new txUnknownHandler(mEs);
break;
}
case eHTMLOutput:
{
*aHandler = new txMozillaXMLOutput(EmptyString(),
kNameSpaceID_None,
aFormat, mSourceDocument,
mResultDocument, mObserver);
break;
}
case eTextOutput:
{
*aHandler = new txMozillaTextOutput(mSourceDocument,
mResultDocument,
mObserver);
break;
}
}
NS_ENSURE_TRUE(*aHandler, NS_ERROR_OUT_OF_MEMORY);
return NS_OK;
}
nsresult
txToDocHandlerFactory::createHandlerWith(txOutputFormat* aFormat,
const nsAString& aName,
PRInt32 aNsID,
txAXMLEventHandler** aHandler)
{
*aHandler = nsnull;
switch (aFormat->mMethod) {
case eMethodNotSet:
{
NS_ERROR("How can method not be known when root element is?");
return NS_ERROR_UNEXPECTED;
}
case eXMLOutput:
case eHTMLOutput:
{
*aHandler = new txMozillaXMLOutput(aName, aNsID, aFormat,
mSourceDocument,
mResultDocument,
mObserver);
break;
}
case eTextOutput:
{
*aHandler = new txMozillaTextOutput(mSourceDocument,
mResultDocument,
mObserver);
break;
}
}
NS_ENSURE_TRUE(*aHandler, NS_ERROR_OUT_OF_MEMORY);
return NS_OK;
}
nsresult
txToFragmentHandlerFactory::createHandlerWith(txOutputFormat* aFormat,
txAXMLEventHandler** aHandler)
{
*aHandler = nsnull;
switch (aFormat->mMethod) {
case eMethodNotSet:
{
txOutputFormat format;
format.merge(*aFormat);
nsCOMPtr<nsIDOMDocument> domdoc;
mFragment->GetOwnerDocument(getter_AddRefs(domdoc));
NS_ASSERTION(domdoc, "unable to get ownerdocument");
nsCOMPtr<nsIDocument> doc = do_QueryInterface(domdoc);
if (!doc || doc->IsCaseSensitive()) {
format.mMethod = eXMLOutput;
} else {
format.mMethod = eHTMLOutput;
}
*aHandler = new txMozillaXMLOutput(&format, mFragment);
break;
}
case eXMLOutput:
case eHTMLOutput:
{
*aHandler = new txMozillaXMLOutput(aFormat, mFragment);
break;
}
case eTextOutput:
{
*aHandler = new txMozillaTextOutput(mFragment);
break;
}
}
NS_ENSURE_TRUE(*aHandler, NS_ERROR_OUT_OF_MEMORY);
return NS_OK;
}
nsresult
txToFragmentHandlerFactory::createHandlerWith(txOutputFormat* aFormat,
const nsAString& aName,
PRInt32 aNsID,
txAXMLEventHandler** aHandler)
{
*aHandler = nsnull;
NS_ASSERTION(aFormat->mMethod != eMethodNotSet,
"How can method not be known when root element is?");
NS_ENSURE_TRUE(aFormat->mMethod != eMethodNotSet, NS_ERROR_UNEXPECTED);
return createHandlerWith(aFormat, aHandler);
}
/**
* txMozillaXSLTProcessor
*/
NS_IMPL_ADDREF(txMozillaXSLTProcessor)
NS_IMPL_RELEASE(txMozillaXSLTProcessor)
NS_INTERFACE_MAP_BEGIN(txMozillaXSLTProcessor)
NS_INTERFACE_MAP_ENTRY(nsIXSLTProcessor)
NS_INTERFACE_MAP_ENTRY(nsIXSLTProcessorObsolete)
NS_INTERFACE_MAP_ENTRY(nsIXSLTProcessorPrivate)
NS_INTERFACE_MAP_ENTRY(nsIDocumentTransformer)
NS_INTERFACE_MAP_ENTRY(nsIDocumentTransformer_1_8_BRANCH)
NS_INTERFACE_MAP_ENTRY(nsIDocumentObserver)
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIXSLTProcessor)
NS_INTERFACE_MAP_ENTRY_EXTERNAL_DOM_CLASSINFO(XSLTProcessor)
NS_INTERFACE_MAP_END
txMozillaXSLTProcessor::txMozillaXSLTProcessor() : mStylesheetDocument(nsnull),
mTransformResult(NS_OK),
mCompileResult(NS_OK),
mVariables(PR_TRUE),
mFlags(0)
{
}
txMozillaXSLTProcessor::~txMozillaXSLTProcessor()
{
if (mStylesheetDocument) {
mStylesheetDocument->RemoveObserver(this);
}
}
NS_IMETHODIMP
txMozillaXSLTProcessor::TransformDocument(nsIDOMNode* aSourceDOM,
nsIDOMNode* aStyleDOM,
nsIDOMDocument* aOutputDoc,
nsISupports* aObserver)
{
NS_ENSURE_ARG(aSourceDOM);
NS_ENSURE_ARG(aStyleDOM);
NS_ENSURE_ARG(aOutputDoc);
NS_ENSURE_FALSE(aObserver, NS_ERROR_NOT_IMPLEMENTED);
if (!URIUtils::CanCallerAccess(aSourceDOM) ||
!URIUtils::CanCallerAccess(aStyleDOM) ||
!URIUtils::CanCallerAccess(aOutputDoc)) {
return NS_ERROR_DOM_SECURITY_ERR;
}
PRUint16 type = 0;
aStyleDOM->GetNodeType(&type);
NS_ENSURE_TRUE(type == nsIDOMNode::ELEMENT_NODE ||
type == nsIDOMNode::DOCUMENT_NODE,
NS_ERROR_INVALID_ARG);
nsresult rv = TX_CompileStylesheet(aStyleDOM, this,
getter_AddRefs(mStylesheet));
NS_ENSURE_SUCCESS(rv, rv);
mSource = aSourceDOM;
return TransformToDoc(aOutputDoc, nsnull);
}
NS_IMETHODIMP
txMozillaXSLTProcessor::SetTransformObserver(nsITransformObserver* aObserver)
{
mObserver = aObserver;
return NS_OK;
}
nsresult
txMozillaXSLTProcessor::SetSourceContentModel(nsIDOMNode* aSourceDOM)
{
mSource = aSourceDOM;
if (NS_FAILED(mTransformResult)) {
notifyError();
return NS_OK;
}
if (mStylesheet) {
return DoTransform();
}
return NS_OK;
}
NS_IMETHODIMP
txMozillaXSLTProcessor::AddXSLTParamNamespace(const nsString& aPrefix,
const nsString& aNamespace)
{
nsCOMPtr<nsIAtom> pre = do_GetAtom(aPrefix);
return mParamNamespaceMap.mapNamespace(pre, aNamespace);
}
class txXSLTParamContext : public txIParseContext,
public txIEvalContext
{
public:
txXSLTParamContext(txNamespaceMap *aResolver, txXPathNode& aContext,
txResultRecycler* aRecycler)
: mResolver(aResolver),
mContext(aContext),
mRecycler(aRecycler)
{
}
// txIParseContext
nsresult resolveNamespacePrefix(nsIAtom* aPrefix, PRInt32& aID)
{
aID = mResolver->lookupNamespace(aPrefix);
return aID == kNameSpaceID_Unknown ? NS_ERROR_DOM_NAMESPACE_ERR :
NS_OK;
}
nsresult resolveFunctionCall(nsIAtom* aName, PRInt32 aID,
FunctionCall*& aFunction)
{
return NS_ERROR_XPATH_UNKNOWN_FUNCTION;
}
PRBool caseInsensitiveNameTests()
{
return PR_FALSE;
}
void SetErrorOffset(PRUint32 aOffset)
{
}
// txIEvalContext
nsresult getVariable(PRInt32 aNamespace, nsIAtom* aLName,
txAExprResult*& aResult)
{
aResult = nsnull;
return NS_ERROR_INVALID_ARG;
}
PRBool isStripSpaceAllowed(const txXPathNode& aNode)
{
return PR_FALSE;
}
void* getPrivateContext()
{
return nsnull;
}
txResultRecycler* recycler()
{
return mRecycler;
}
void receiveError(const nsAString& aMsg, nsresult aRes)
{
}
const txXPathNode& getContextNode()
{
return mContext;
}
PRUint32 size()
{
return 1;
}
PRUint32 position()
{
return 1;
}
private:
txNamespaceMap *mResolver;
txXPathNode& mContext;
txResultRecycler* mRecycler;
};
NS_IMETHODIMP
txMozillaXSLTProcessor::AddXSLTParam(const nsString& aName,
const nsString& aNamespace,
const nsString& aSelect,
const nsString& aValue,
nsIDOMNode* aContext)
{
nsresult rv = NS_OK;
if (aSelect.IsVoid() == aValue.IsVoid()) {
// Ignore if neither or both are specified
return NS_ERROR_FAILURE;
}
nsRefPtr<txAExprResult> value;
if (!aSelect.IsVoid()) {
// Set up context
nsAutoPtr<txXPathNode> contextNode(
txXPathNativeNode::createXPathNode(aContext));
NS_ENSURE_TRUE(contextNode, NS_ERROR_OUT_OF_MEMORY);
if (!mRecycler) {
mRecycler = new txResultRecycler;
NS_ENSURE_TRUE(mRecycler, NS_ERROR_OUT_OF_MEMORY);
rv = mRecycler->init();
NS_ENSURE_SUCCESS(rv, rv);
}
txXSLTParamContext paramContext(&mParamNamespaceMap, *contextNode,
mRecycler);
// Parse
nsAutoPtr<Expr> expr;
rv = txExprParser::createExpr(aSelect, &paramContext,
getter_Transfers(expr));
NS_ENSURE_SUCCESS(rv, rv);
// Evaluate
rv = expr->evaluate(&paramContext, getter_AddRefs(value));
NS_ENSURE_SUCCESS(rv, rv);
}
else {
value = new StringResult(aValue, nsnull);
NS_ENSURE_TRUE(value, NS_ERROR_OUT_OF_MEMORY);
}
nsCOMPtr<nsIAtom> name = do_GetAtom(aName);
PRInt32 nsId = txNamespaceManager::getNamespaceID(aNamespace);
NS_ENSURE_FALSE(nsId == kNameSpaceID_Unknown, NS_ERROR_FAILURE);
txExpandedName varName(nsId, name);
txVariable* var = (txVariable*)mVariables.get(varName);
if (var) {
var->setValue(value);
return NS_OK;
}
var = new txVariable(value);
NS_ENSURE_TRUE(var, NS_ERROR_OUT_OF_MEMORY);
return mVariables.add(varName, var);
}
PR_BEGIN_EXTERN_C
void* PR_CALLBACK
HandleTransformBlockerEvent(PLEvent *aEvent)
{
txMozillaXSLTProcessor *processor =
NS_STATIC_CAST(txMozillaXSLTProcessor*, aEvent->owner);
processor->TransformToDoc(nsnull, nsnull);
return nsnull;
}
void PR_CALLBACK
DestroyTransformBlockerEvent(PLEvent *aEvent)
{
txMozillaXSLTProcessor *processor =
NS_STATIC_CAST(txMozillaXSLTProcessor*, aEvent->owner);
nsCOMPtr<nsIDocument> document =
do_QueryInterface(processor->GetSourceContentModel());
document->UnblockOnload();
NS_RELEASE(processor);
delete aEvent;
}
PR_END_EXTERN_C
nsresult
txMozillaXSLTProcessor::DoTransform()
{
NS_ENSURE_TRUE(mSource, NS_ERROR_UNEXPECTED);
NS_ENSURE_TRUE(mStylesheet, NS_ERROR_UNEXPECTED);
NS_ASSERTION(mObserver, "no observer");
nsresult rv;
nsCOMPtr<nsIDocument> document = do_QueryInterface(mSource, &rv);
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIEventQueueService> service =
do_GetService(NS_EVENTQUEUESERVICE_CONTRACTID, &rv);
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIEventQueue> eventQ;
rv = service->GetSpecialEventQueue(nsIEventQueueService::UI_THREAD_EVENT_QUEUE,
getter_AddRefs(eventQ));
NS_ENSURE_SUCCESS(rv, rv);
PLEvent* event = new PLEvent();
if (!event) {
return NS_ERROR_OUT_OF_MEMORY;
}
PL_InitEvent(event, this, HandleTransformBlockerEvent,
DestroyTransformBlockerEvent);
document->BlockOnload();
// After this point, event destruction will release |this| (in
// DestroyTransformBlockerEvent)
NS_ADDREF_THIS();
rv = eventQ->PostEvent(event);
if (NS_FAILED(rv)) {
// XXX Maybe we should just display the source document in this case?
// Also, set up context information, see bug 204655.
reportError(rv, nsnull, nsnull);
PL_DestroyEvent(event);
}
return rv;
}
NS_IMETHODIMP
txMozillaXSLTProcessor::ImportStylesheet(nsIDOMNode *aStyle)
{
NS_ENSURE_TRUE(aStyle, NS_ERROR_NULL_POINTER);
// We don't support importing multiple stylesheets yet.
NS_ENSURE_TRUE(!mStylesheetDocument && !mStylesheet,
NS_ERROR_NOT_IMPLEMENTED);
if (!URIUtils::CanCallerAccess(aStyle)) {
return NS_ERROR_DOM_SECURITY_ERR;
}
PRUint16 type = 0;
aStyle->GetNodeType(&type);
NS_ENSURE_TRUE(type == nsIDOMNode::ELEMENT_NODE ||
type == nsIDOMNode::DOCUMENT_NODE,
NS_ERROR_INVALID_ARG);
nsresult rv = TX_CompileStylesheet(aStyle, this,
getter_AddRefs(mStylesheet));
// XXX set up exception context, bug 204658
NS_ENSURE_SUCCESS(rv, rv);
if (type == nsIDOMNode::ELEMENT_NODE) {
nsCOMPtr<nsIDOMDocument> domDoc;
aStyle->GetOwnerDocument(getter_AddRefs(domDoc));
NS_ENSURE_TRUE(domDoc, NS_ERROR_UNEXPECTED);
nsCOMPtr<nsIDocument> styleDoc = do_QueryInterface(domDoc);
mStylesheetDocument = styleDoc;
mEmbeddedStylesheetRoot = do_QueryInterface(aStyle);
}
else {
nsCOMPtr<nsIDocument> styleDoc = do_QueryInterface(aStyle);
mStylesheetDocument = styleDoc;
}
mStylesheetDocument->AddObserver(this);
return NS_OK;
}
NS_IMETHODIMP
txMozillaXSLTProcessor::TransformToDocument(nsIDOMNode *aSource,
nsIDOMDocument **aResult)
{
NS_ENSURE_ARG(aSource);
NS_ENSURE_ARG_POINTER(aResult);
NS_ENSURE_SUCCESS(mCompileResult, mCompileResult);
if (!URIUtils::CanCallerAccess(aSource)) {
return NS_ERROR_DOM_SECURITY_ERR;
}
nsresult rv = ensureStylesheet();
NS_ENSURE_SUCCESS(rv, rv);
mSource = aSource;
return TransformToDoc(nsnull, aResult);
}
nsresult
txMozillaXSLTProcessor::TransformToDoc(nsIDOMDocument *aOutputDoc,
nsIDOMDocument **aResult)
{
nsAutoPtr<txXPathNode> sourceNode(txXPathNativeNode::createXPathNode(mSource));
if (!sourceNode) {
return NS_ERROR_OUT_OF_MEMORY;
}
nsCOMPtr<nsIDOMDocument> sourceDOMDocument;
mSource->GetOwnerDocument(getter_AddRefs(sourceDOMDocument));
if (!sourceDOMDocument) {
sourceDOMDocument = do_QueryInterface(mSource);
}
txExecutionState es(mStylesheet, IsLoadDisabled());
// XXX Need to add error observers
txToDocHandlerFactory handlerFactory(&es, sourceDOMDocument, aOutputDoc,
mObserver);
es.mOutputHandlerFactory = &handlerFactory;
es.init(*sourceNode, &mVariables);
// Process root of XML source document
nsresult rv = txXSLTProcessor::execute(es);
es.end(rv);
if (NS_SUCCEEDED(rv)) {
if (aResult) {
txAOutputXMLEventHandler* handler =
NS_STATIC_CAST(txAOutputXMLEventHandler*, es.mOutputHandler);
handler->getOutputDocument(aResult);
}
}
else if (mObserver) {
// XXX set up context information, bug 204655
reportError(rv, nsnull, nsnull);
}
return rv;
}
NS_IMETHODIMP
txMozillaXSLTProcessor::TransformToFragment(nsIDOMNode *aSource,
nsIDOMDocument *aOutput,
nsIDOMDocumentFragment **aResult)
{
NS_ENSURE_ARG(aSource);
NS_ENSURE_ARG(aOutput);
NS_ENSURE_ARG_POINTER(aResult);
NS_ENSURE_SUCCESS(mCompileResult, mCompileResult);
if (!URIUtils::CanCallerAccess(aSource) ||
!URIUtils::CanCallerAccess(aOutput)) {
return NS_ERROR_DOM_SECURITY_ERR;
}
nsresult rv = ensureStylesheet();
NS_ENSURE_SUCCESS(rv, rv);
nsAutoPtr<txXPathNode> sourceNode(txXPathNativeNode::createXPathNode(aSource));
if (!sourceNode) {
return NS_ERROR_OUT_OF_MEMORY;
}
txExecutionState es(mStylesheet, IsLoadDisabled());
// XXX Need to add error observers
rv = aOutput->CreateDocumentFragment(aResult);
NS_ENSURE_SUCCESS(rv, rv);
txToFragmentHandlerFactory handlerFactory(*aResult);
es.mOutputHandlerFactory = &handlerFactory;
es.init(*sourceNode, &mVariables);
// Process root of XML source document
rv = txXSLTProcessor::execute(es);
// XXX setup exception context, bug 204658
es.end(rv);
return rv;
}
NS_IMETHODIMP
txMozillaXSLTProcessor::SetParameter(const nsAString & aNamespaceURI,
const nsAString & aLocalName,
nsIVariant *aValue)
{
NS_ENSURE_ARG(aValue);
nsCOMPtr<nsIVariant> value = aValue;
PRUint16 dataType;
value->GetDataType(&dataType);
switch (dataType) {
// Number
case nsIDataType::VTYPE_INT8:
case nsIDataType::VTYPE_INT16:
case nsIDataType::VTYPE_INT32:
case nsIDataType::VTYPE_INT64:
case nsIDataType::VTYPE_UINT8:
case nsIDataType::VTYPE_UINT16:
case nsIDataType::VTYPE_UINT32:
case nsIDataType::VTYPE_UINT64:
case nsIDataType::VTYPE_FLOAT:
case nsIDataType::VTYPE_DOUBLE:
// Boolean
case nsIDataType::VTYPE_BOOL:
// String
case nsIDataType::VTYPE_CHAR:
case nsIDataType::VTYPE_WCHAR:
case nsIDataType::VTYPE_DOMSTRING:
case nsIDataType::VTYPE_CHAR_STR:
case nsIDataType::VTYPE_WCHAR_STR:
case nsIDataType::VTYPE_STRING_SIZE_IS:
case nsIDataType::VTYPE_WSTRING_SIZE_IS:
case nsIDataType::VTYPE_UTF8STRING:
case nsIDataType::VTYPE_CSTRING:
case nsIDataType::VTYPE_ASTRING:
{
break;
}
// Nodeset
case nsIDataType::VTYPE_INTERFACE:
case nsIDataType::VTYPE_INTERFACE_IS:
{
nsCOMPtr<nsISupports> supports;
nsresult rv = value->GetAsISupports(getter_AddRefs(supports));
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIDOMNode> node = do_QueryInterface(supports);
if (node) {
if (!URIUtils::CanCallerAccess(node)) {
return NS_ERROR_DOM_SECURITY_ERR;
}
break;
}
nsCOMPtr<nsIXPathResult> xpathResult = do_QueryInterface(supports);
if (xpathResult) {
nsRefPtr<txAExprResult> result;
nsresult rv = xpathResult->GetExprResult(getter_AddRefs(result));
NS_ENSURE_SUCCESS(rv, rv);
if (result->getResultType() == txAExprResult::NODESET) {
txNodeSet *nodeSet =
NS_STATIC_CAST(txNodeSet*,
NS_STATIC_CAST(txAExprResult*, result));
nsCOMPtr<nsIDOMNode> node;
PRInt32 i, count = nodeSet->size();
for (i = 0; i < count; ++i) {
rv = txXPathNativeNode::getNode(nodeSet->get(i),
getter_AddRefs(node));
NS_ENSURE_SUCCESS(rv, rv);
if (!URIUtils::CanCallerAccess(node)) {
return NS_ERROR_DOM_SECURITY_ERR;
}
}
}
// Clone the nsXPathResult so that mutations don't affect this
// variable.
nsCOMPtr<nsIXPathResult> clone;
rv = xpathResult->Clone(getter_AddRefs(clone));
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIWritableVariant> variant =
do_CreateInstance("@mozilla.org/variant;1", &rv);
NS_ENSURE_SUCCESS(rv, rv);
rv = variant->SetAsISupports(clone);
NS_ENSURE_SUCCESS(rv, rv);
value = variant;
break;
}
nsCOMPtr<nsIDOMNodeList> nodeList = do_QueryInterface(supports);
if (nodeList) {
PRUint32 length;
nodeList->GetLength(&length);
nsCOMPtr<nsIDOMNode> node;
PRUint32 i;
for (i = 0; i < length; ++i) {
nodeList->Item(i, getter_AddRefs(node));
if (!URIUtils::CanCallerAccess(node)) {
return NS_ERROR_DOM_SECURITY_ERR;
}
}
break;
}
// Random JS Objects will be converted to a string.
nsCOMPtr<nsIXPConnectJSObjectHolder> holder =
do_QueryInterface(supports);
if (holder) {
break;
}
// We don't know how to handle this type of param.
return NS_ERROR_ILLEGAL_VALUE;
}
case nsIDataType::VTYPE_ARRAY:
{
PRUint16 type;
nsIID iid;
PRUint32 count;
void* array;
nsresult rv = value->GetAsArray(&type, &iid, &count, &array);
NS_ENSURE_SUCCESS(rv, rv);
if (type != nsIDataType::VTYPE_INTERFACE &&
type != nsIDataType::VTYPE_INTERFACE_IS) {
nsMemory::Free(array);
// We only support arrays of DOM nodes.
return NS_ERROR_ILLEGAL_VALUE;
}
nsISupports** values = NS_STATIC_CAST(nsISupports**, array);
PRUint32 i;
for (i = 0; i < count; ++i) {
nsISupports *supports = values[i];
nsCOMPtr<nsIDOMNode> node = do_QueryInterface(supports);
if (node) {
rv = URIUtils::CanCallerAccess(node) ? NS_OK :
NS_ERROR_DOM_SECURITY_ERR;
}
else {
// We only support arrays of DOM nodes.
rv = NS_ERROR_ILLEGAL_VALUE;
}
if (NS_FAILED(rv)) {
while (i < count) {
NS_RELEASE(values[i]);
++i;
}
nsMemory::Free(array);
return rv;
}
NS_RELEASE(supports);
}
nsMemory::Free(array);
break;
}
default:
{
return NS_ERROR_FAILURE;
}
}
PRInt32 nsId = kNameSpaceID_Unknown;
nsresult rv = gTxNameSpaceManager->RegisterNameSpace(aNamespaceURI, nsId);
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIAtom> localName = do_GetAtom(aLocalName);
txExpandedName varName(nsId, localName);
txVariable* var = (txVariable*)mVariables.get(varName);
if (var) {
var->setValue(value);
return NS_OK;
}
var = new txVariable(value);
NS_ENSURE_TRUE(var, NS_ERROR_OUT_OF_MEMORY);
return mVariables.add(varName, var);
}
NS_IMETHODIMP
txMozillaXSLTProcessor::GetParameter(const nsAString& aNamespaceURI,
const nsAString& aLocalName,
nsIVariant **aResult)
{
PRInt32 nsId = kNameSpaceID_Unknown;
nsresult rv = gTxNameSpaceManager->RegisterNameSpace(aNamespaceURI, nsId);
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIAtom> localName = do_GetAtom(aLocalName);
txExpandedName varName(nsId, localName);
txVariable* var = (txVariable*)mVariables.get(varName);
if (var) {
return var->getValue(aResult);
}
return NS_OK;
}
NS_IMETHODIMP
txMozillaXSLTProcessor::RemoveParameter(const nsAString& aNamespaceURI,
const nsAString& aLocalName)
{
PRInt32 nsId = kNameSpaceID_Unknown;
nsresult rv = gTxNameSpaceManager->RegisterNameSpace(aNamespaceURI, nsId);
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIAtom> localName = do_GetAtom(aLocalName);
txExpandedName varName(nsId, localName);
mVariables.remove(varName);
return NS_OK;
}
NS_IMETHODIMP
txMozillaXSLTProcessor::ClearParameters()
{
mVariables.clear();
return NS_OK;
}
NS_IMETHODIMP
txMozillaXSLTProcessor::Reset()
{
if (mStylesheetDocument) {
mStylesheetDocument->RemoveObserver(this);
}
mStylesheet = nsnull;
mStylesheetDocument = nsnull;
mEmbeddedStylesheetRoot = nsnull;
mCompileResult = NS_OK;
mVariables.clear();
return NS_OK;
}
static
PRBool
IsCallerChrome()
{
nsCOMPtr<nsIScriptSecurityManager> secman =
do_GetService(NS_SCRIPTSECURITYMANAGER_CONTRACTID);
PRBool is_caller_chrome = PR_FALSE;
nsresult rv = secman->SubjectPrincipalIsSystem(&is_caller_chrome);
if (NS_FAILED(rv)) {
return PR_FALSE;
}
return is_caller_chrome;
}
NS_IMETHODIMP
txMozillaXSLTProcessor::SetFlags(PRUint32 aFlags)
{
NS_ENSURE_TRUE(IsCallerChrome(), NS_ERROR_DOM_SECURITY_ERR);
mFlags = aFlags;
return NS_OK;
}
NS_IMETHODIMP
txMozillaXSLTProcessor::GetFlags(PRUint32* aFlags)
{
NS_ENSURE_TRUE(IsCallerChrome(), NS_ERROR_DOM_SECURITY_ERR);
*aFlags = mFlags;
return NS_OK;
}
NS_IMETHODIMP
txMozillaXSLTProcessor::LoadStyleSheet(nsIURI* aUri, nsILoadGroup* aLoadGroup,
nsIPrincipal* aCallerPrincipal)
{
nsresult rv = TX_LoadSheet(aUri, this, aLoadGroup, aCallerPrincipal);
if (NS_FAILED(rv) && mObserver) {
// This is most likely a network or security error, just
// use the uri as context.
nsCAutoString spec;
if (aUri) {
aUri->GetSpec(spec);
CopyUTF8toUTF16(spec, mSourceText);
}
reportError(rv, nsnull, nsnull);
}
return rv;
}
nsresult
txMozillaXSLTProcessor::setStylesheet(txStylesheet* aStylesheet)
{
mStylesheet = aStylesheet;
if (mSource) {
return DoTransform();
}
return NS_OK;
}
void
txMozillaXSLTProcessor::reportError(nsresult aResult,
const PRUnichar *aErrorText,
const PRUnichar *aSourceText)
{
if (!mObserver) {
return;
}
mTransformResult = aResult;
if (aErrorText) {
mErrorText.Assign(aErrorText);
}
else {
nsCOMPtr<nsIStringBundleService> sbs =
do_GetService(NS_STRINGBUNDLE_CONTRACTID);
if (sbs) {
nsXPIDLString errorText;
sbs->FormatStatusMessage(aResult, EmptyString().get(),
getter_Copies(errorText));
nsXPIDLString errorMessage;
nsCOMPtr<nsIStringBundle> bundle;
sbs->CreateBundle(XSLT_MSGS_URL, getter_AddRefs(bundle));
if (bundle) {
const PRUnichar* error[] = { errorText.get() };
if (mStylesheet) {
bundle->FormatStringFromName(NS_LITERAL_STRING("TransformError").get(),
error, 1,
getter_Copies(errorMessage));
}
else {
bundle->FormatStringFromName(NS_LITERAL_STRING("LoadingError").get(),
error, 1,
getter_Copies(errorMessage));
}
}
mErrorText.Assign(errorMessage);
}
}
if (aSourceText) {
mSourceText.Assign(aSourceText);
}
if (mSource) {
notifyError();
}
}
void
txMozillaXSLTProcessor::notifyError()
{
nsresult rv;
nsCOMPtr<nsIDOMDocument> errorDocument = do_CreateInstance(kXMLDocumentCID,
&rv);
if (NS_FAILED(rv)) {
return;
}
// Set up the document
nsCOMPtr<nsIDocument> document = do_QueryInterface(errorDocument);
if (!document) {
return;
}
URIUtils::ResetWithSource(document, mSource);
NS_NAMED_LITERAL_STRING(ns, "http://www.mozilla.org/newlayout/xml/parsererror.xml");
nsCOMPtr<nsIDOMElement> element;
rv = errorDocument->CreateElementNS(ns, NS_LITERAL_STRING("parsererror"),
getter_AddRefs(element));
if (NS_FAILED(rv)) {
return;
}
nsCOMPtr<nsIContent> rootContent = do_QueryInterface(element);
if (!rootContent) {
return;
}
rv = document->SetRootContent(rootContent);
if (NS_FAILED(rv)) {
return;
}
nsCOMPtr<nsIDOMText> text;
rv = errorDocument->CreateTextNode(mErrorText, getter_AddRefs(text));
if (NS_FAILED(rv)) {
return;
}
nsCOMPtr<nsIDOMNode> resultNode;
rv = element->AppendChild(text, getter_AddRefs(resultNode));
if (NS_FAILED(rv)) {
return;
}
if (!mSourceText.IsEmpty()) {
nsCOMPtr<nsIDOMElement> sourceElement;
rv = errorDocument->CreateElementNS(ns,
NS_LITERAL_STRING("sourcetext"),
getter_AddRefs(sourceElement));
if (NS_FAILED(rv)) {
return;
}
rv = element->AppendChild(sourceElement, getter_AddRefs(resultNode));
if (NS_FAILED(rv)) {
return;
}
rv = errorDocument->CreateTextNode(mSourceText, getter_AddRefs(text));
if (NS_FAILED(rv)) {
return;
}
rv = sourceElement->AppendChild(text, getter_AddRefs(resultNode));
if (NS_FAILED(rv)) {
return;
}
}
mObserver->OnTransformDone(mTransformResult, errorDocument);
}
nsresult
txMozillaXSLTProcessor::ensureStylesheet()
{
if (mStylesheet) {
return NS_OK;
}
NS_ENSURE_TRUE(mStylesheetDocument, NS_ERROR_NOT_INITIALIZED);
nsCOMPtr<nsIDOMNode> style = do_QueryInterface(mEmbeddedStylesheetRoot);
if (!style) {
style = do_QueryInterface(mStylesheetDocument);
}
return TX_CompileStylesheet(style, this, getter_AddRefs(mStylesheet));
}
NS_IMPL_NSIDOCUMENTOBSERVER_LOAD_STUB(txMozillaXSLTProcessor)
NS_IMPL_NSIDOCUMENTOBSERVER_REFLOW_STUB(txMozillaXSLTProcessor)
NS_IMPL_NSIDOCUMENTOBSERVER_STYLE_STUB(txMozillaXSLTProcessor)
NS_IMPL_NSIDOCUMENTOBSERVER_STATE_STUB(txMozillaXSLTProcessor)
void
txMozillaXSLTProcessor::BeginUpdate(nsIDocument* aDocument,
nsUpdateType aUpdateType)
{
}
void
txMozillaXSLTProcessor::EndUpdate(nsIDocument* aDocument,
nsUpdateType aUpdateType)
{
}
void
txMozillaXSLTProcessor::DocumentWillBeDestroyed(nsIDocument* aDocument)
{
if (NS_FAILED(mCompileResult)) {
return;
}
mCompileResult = ensureStylesheet();
mStylesheetDocument = nsnull;
mEmbeddedStylesheetRoot = nsnull;
// This might not be neccesary, but just in case some element ends up
// causing a notification as the document goes away we don't want to
// invalidate the stylesheet.
aDocument->RemoveObserver(this);
}
void
txMozillaXSLTProcessor::CharacterDataChanged(nsIDocument* aDocument,
nsIContent *aContent,
PRBool aAppend)
{
mStylesheet = nsnull;
}
void
txMozillaXSLTProcessor::AttributeChanged(nsIDocument* aDocument,
nsIContent* aContent,
PRInt32 aNameSpaceID,
nsIAtom* aAttribute,
PRInt32 aModType)
{
mStylesheet = nsnull;
}
void
txMozillaXSLTProcessor::ContentAppended(nsIDocument* aDocument,
nsIContent* aContainer,
PRInt32 aNewIndexInContainer)
{
mStylesheet = nsnull;
}
void
txMozillaXSLTProcessor::ContentInserted(nsIDocument* aDocument,
nsIContent* aContainer,
nsIContent* aChild,
PRInt32 aIndexInContainer)
{
mStylesheet = nsnull;
}
void
txMozillaXSLTProcessor::ContentRemoved(nsIDocument* aDocument,
nsIContent* aContainer,
nsIContent* aChild,
PRInt32 aIndexInContainer)
{
mStylesheet = nsnull;
}
/* static*/
nsresult
txVariable::Convert(nsIVariant *aValue, txAExprResult** aResult)
{
*aResult = nsnull;
PRUint16 dataType;
aValue->GetDataType(&dataType);
switch (dataType) {
// Number
case nsIDataType::VTYPE_INT8:
case nsIDataType::VTYPE_INT16:
case nsIDataType::VTYPE_INT32:
case nsIDataType::VTYPE_INT64:
case nsIDataType::VTYPE_UINT8:
case nsIDataType::VTYPE_UINT16:
case nsIDataType::VTYPE_UINT32:
case nsIDataType::VTYPE_UINT64:
case nsIDataType::VTYPE_FLOAT:
case nsIDataType::VTYPE_DOUBLE:
{
double value;
nsresult rv = aValue->GetAsDouble(&value);
NS_ENSURE_SUCCESS(rv, rv);
*aResult = new NumberResult(value, nsnull);
NS_ENSURE_TRUE(*aResult, NS_ERROR_OUT_OF_MEMORY);
NS_ADDREF(*aResult);
return NS_OK;
}
// Boolean
case nsIDataType::VTYPE_BOOL:
{
PRBool value;
nsresult rv = aValue->GetAsBool(&value);
NS_ENSURE_SUCCESS(rv, rv);
*aResult = new BooleanResult(value);
NS_ENSURE_TRUE(*aResult, NS_ERROR_OUT_OF_MEMORY);
NS_ADDREF(*aResult);
return NS_OK;
}
// String
case nsIDataType::VTYPE_CHAR:
case nsIDataType::VTYPE_WCHAR:
case nsIDataType::VTYPE_DOMSTRING:
case nsIDataType::VTYPE_CHAR_STR:
case nsIDataType::VTYPE_WCHAR_STR:
case nsIDataType::VTYPE_STRING_SIZE_IS:
case nsIDataType::VTYPE_WSTRING_SIZE_IS:
case nsIDataType::VTYPE_UTF8STRING:
case nsIDataType::VTYPE_CSTRING:
case nsIDataType::VTYPE_ASTRING:
{
nsAutoString value;
nsresult rv = aValue->GetAsAString(value);
NS_ENSURE_SUCCESS(rv, rv);
*aResult = new StringResult(value, nsnull);
NS_ENSURE_TRUE(*aResult, NS_ERROR_OUT_OF_MEMORY);
NS_ADDREF(*aResult);
return NS_OK;
}
// Nodeset
case nsIDataType::VTYPE_INTERFACE:
case nsIDataType::VTYPE_INTERFACE_IS:
{
nsCOMPtr<nsISupports> supports;
nsresult rv = aValue->GetAsISupports(getter_AddRefs(supports));
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIDOMNode> node = do_QueryInterface(supports);
if (node) {
nsAutoPtr<txXPathNode> xpathNode(txXPathNativeNode::createXPathNode(node));
if (!xpathNode) {
return NS_ERROR_FAILURE;
}
*aResult = new txNodeSet(*xpathNode, nsnull);
if (!*aResult) {
return NS_ERROR_OUT_OF_MEMORY;
}
NS_ADDREF(*aResult);
return NS_OK;
}
nsCOMPtr<nsIXPathResult> xpathResult = do_QueryInterface(supports);
if (xpathResult) {
return xpathResult->GetExprResult(aResult);
}
nsCOMPtr<nsIDOMNodeList> nodeList = do_QueryInterface(supports);
if (nodeList) {
nsRefPtr<txNodeSet> nodeSet = new txNodeSet(nsnull);
if (!nodeSet) {
return NS_ERROR_OUT_OF_MEMORY;
}
PRUint32 length;
nodeList->GetLength(&length);
nsCOMPtr<nsIDOMNode> node;
PRUint32 i;
for (i = 0; i < length; ++i) {
nodeList->Item(i, getter_AddRefs(node));
nsAutoPtr<txXPathNode> xpathNode(
txXPathNativeNode::createXPathNode(node));
if (!xpathNode) {
return NS_ERROR_FAILURE;
}
nodeSet->add(*xpathNode);
}
NS_ADDREF(*aResult = nodeSet);
return NS_OK;
}
// Convert random JS Objects to a string.
nsCOMPtr<nsIXPConnectJSObjectHolder> holder =
do_QueryInterface(supports);
if (holder) {
nsCOMPtr<nsIXPConnect> xpc =
do_GetService(nsIXPConnect::GetCID(), &rv);
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIXPCNativeCallContext> cc;
rv = xpc->GetCurrentNativeCallContext(getter_AddRefs(cc));
NS_ENSURE_SUCCESS(rv, rv);
JSContext* cx;
rv = cc->GetJSContext(&cx);
NS_ENSURE_SUCCESS(rv, rv);
JSObject *jsobj;
rv = holder->GetJSObject(&jsobj);
NS_ENSURE_SUCCESS(rv, rv);
JSString *str = JS_ValueToString(cx, OBJECT_TO_JSVAL(jsobj));
NS_ENSURE_TRUE(str, NS_ERROR_FAILURE);
const PRUnichar *strChars =
NS_REINTERPRET_CAST(const PRUnichar*,
::JS_GetStringChars(str));
nsDependentString value(strChars, ::JS_GetStringLength(str));
*aResult = new StringResult(value, nsnull);
if (!*aResult) {
return NS_ERROR_OUT_OF_MEMORY;
}
NS_ADDREF(*aResult);
return NS_OK;
}
break;
}
case nsIDataType::VTYPE_ARRAY:
{
PRUint16 type;
nsIID iid;
PRUint32 count;
void* array;
nsresult rv = aValue->GetAsArray(&type, &iid, &count, &array);
NS_ENSURE_SUCCESS(rv, rv);
NS_ASSERTION(type == nsIDataType::VTYPE_INTERFACE ||
type == nsIDataType::VTYPE_INTERFACE_IS,
"Huh, we checked this in SetParameter?");
nsISupports** values = NS_STATIC_CAST(nsISupports**, array);
nsRefPtr<txNodeSet> nodeSet = new txNodeSet(nsnull);
if (!nodeSet) {
NS_FREE_XPCOM_ISUPPORTS_POINTER_ARRAY(count, values);
return NS_ERROR_OUT_OF_MEMORY;
}
PRUint32 i;
for (i = 0; i < count; ++i) {
nsISupports *supports = values[i];
nsCOMPtr<nsIDOMNode> node = do_QueryInterface(supports);
NS_ASSERTION(node, "Huh, we checked this in SetParameter?");
nsAutoPtr<txXPathNode> xpathNode(
txXPathNativeNode::createXPathNode(node));
if (!xpathNode) {
while (i < count) {
NS_RELEASE(values[i++]);
}
nsMemory::Free(array);
return NS_ERROR_FAILURE;
}
nodeSet->add(*xpathNode);
NS_RELEASE(supports);
}
nsMemory::Free(array);
NS_ADDREF(*aResult = nodeSet);
return NS_OK;
}
}
return NS_ERROR_ILLEGAL_VALUE;
}
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