forked from mirrors/gecko-dev
1fd1bc3935
--HG-- rename : caps/nsNullPrincipal.cpp => caps/NullPrincipal.cpp rename : caps/nsNullPrincipal.h => caps/NullPrincipal.h rename : caps/nsNullPrincipalURI.cpp => caps/NullPrincipalURI.cpp rename : caps/nsNullPrincipalURI.h => caps/NullPrincipalURI.h
719 lines
20 KiB
C++
719 lines
20 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
#include "nsIInputStream.h"
|
|
#include "nsNetCID.h"
|
|
#include "nsNetUtil.h"
|
|
#include "NullPrincipal.h"
|
|
#include "nsIParser.h"
|
|
#include "nsParserCIID.h"
|
|
#include "nsStreamUtils.h"
|
|
#include "nsStringStream.h"
|
|
#include "nsIScriptError.h"
|
|
#include "nsSAXAttributes.h"
|
|
#include "nsSAXLocator.h"
|
|
#include "nsSAXXMLReader.h"
|
|
#include "nsCharsetSource.h"
|
|
|
|
#include "mozilla/dom/EncodingUtils.h"
|
|
|
|
using mozilla::dom::EncodingUtils;
|
|
|
|
#define XMLNS_URI "http://www.w3.org/2000/xmlns/"
|
|
|
|
static NS_DEFINE_CID(kParserCID, NS_PARSER_CID);
|
|
|
|
NS_IMPL_CYCLE_COLLECTION(nsSAXXMLReader,
|
|
mContentHandler,
|
|
mDTDHandler,
|
|
mErrorHandler,
|
|
mLexicalHandler,
|
|
mDeclarationHandler,
|
|
mBaseURI,
|
|
mListener,
|
|
mParserObserver)
|
|
NS_IMPL_CYCLE_COLLECTING_ADDREF(nsSAXXMLReader)
|
|
NS_IMPL_CYCLE_COLLECTING_RELEASE(nsSAXXMLReader)
|
|
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(nsSAXXMLReader)
|
|
NS_INTERFACE_MAP_ENTRY(nsISAXXMLReader)
|
|
NS_INTERFACE_MAP_ENTRY(nsIExpatSink)
|
|
NS_INTERFACE_MAP_ENTRY(nsIExtendedExpatSink)
|
|
NS_INTERFACE_MAP_ENTRY(nsIContentSink)
|
|
NS_INTERFACE_MAP_ENTRY(nsIRequestObserver)
|
|
NS_INTERFACE_MAP_ENTRY(nsIStreamListener)
|
|
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsISAXXMLReader)
|
|
NS_INTERFACE_MAP_END
|
|
|
|
nsSAXXMLReader::nsSAXXMLReader() :
|
|
mIsAsyncParse(false),
|
|
mEnableNamespacePrefixes(false)
|
|
{
|
|
}
|
|
|
|
// nsIContentSink
|
|
NS_IMETHODIMP
|
|
nsSAXXMLReader::WillBuildModel(nsDTDMode)
|
|
{
|
|
if (mContentHandler)
|
|
return mContentHandler->StartDocument();
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsSAXXMLReader::DidBuildModel(bool aTerminated)
|
|
{
|
|
if (mContentHandler)
|
|
return mContentHandler->EndDocument();
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsSAXXMLReader::SetParser(nsParserBase *aParser)
|
|
{
|
|
return NS_OK;
|
|
}
|
|
|
|
// nsIExtendedExpatSink
|
|
NS_IMETHODIMP
|
|
nsSAXXMLReader::HandleStartElement(const char16_t *aName,
|
|
const char16_t **aAtts,
|
|
uint32_t aAttsCount,
|
|
uint32_t aLineNumber)
|
|
{
|
|
if (!mContentHandler)
|
|
return NS_OK;
|
|
|
|
RefPtr<nsSAXAttributes> atts = new nsSAXAttributes();
|
|
if (!atts)
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
nsAutoString uri, localName, qName;
|
|
for (; *aAtts; aAtts += 2) {
|
|
SplitExpatName(aAtts[0], uri, localName, qName);
|
|
// XXX don't have attr type information
|
|
NS_NAMED_LITERAL_STRING(cdataType, "CDATA");
|
|
// could support xmlns reporting, it's a standard SAX feature
|
|
if (mEnableNamespacePrefixes || !uri.EqualsLiteral(XMLNS_URI)) {
|
|
NS_ASSERTION(aAtts[1], "null passed to handler");
|
|
atts->AddAttribute(uri, localName, qName, cdataType,
|
|
nsDependentString(aAtts[1]));
|
|
}
|
|
}
|
|
|
|
// Deal with the element name
|
|
SplitExpatName(aName, uri, localName, qName);
|
|
return mContentHandler->StartElement(uri, localName, qName, atts);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsSAXXMLReader::HandleEndElement(const char16_t *aName)
|
|
{
|
|
if (mContentHandler) {
|
|
nsAutoString uri, localName, qName;
|
|
SplitExpatName(aName, uri, localName, qName);
|
|
return mContentHandler->EndElement(uri, localName, qName);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsSAXXMLReader::HandleComment(const char16_t *aName)
|
|
{
|
|
NS_ASSERTION(aName, "null passed to handler");
|
|
if (mLexicalHandler)
|
|
return mLexicalHandler->Comment(nsDependentString(aName));
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsSAXXMLReader::HandleCDataSection(const char16_t *aData,
|
|
uint32_t aLength)
|
|
{
|
|
nsresult rv;
|
|
if (mLexicalHandler) {
|
|
rv = mLexicalHandler->StartCDATA();
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
}
|
|
|
|
if (mContentHandler) {
|
|
rv = mContentHandler->Characters(Substring(aData, aData+aLength));
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
}
|
|
|
|
if (mLexicalHandler) {
|
|
rv = mLexicalHandler->EndCDATA();
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsSAXXMLReader::HandleStartDTD(const char16_t *aName,
|
|
const char16_t *aSystemId,
|
|
const char16_t *aPublicId)
|
|
{
|
|
char16_t nullChar = char16_t(0);
|
|
if (!aName)
|
|
aName = &nullChar;
|
|
if (!aSystemId)
|
|
aSystemId = &nullChar;
|
|
if (!aPublicId)
|
|
aPublicId = &nullChar;
|
|
|
|
mSystemId = aSystemId;
|
|
mPublicId = aPublicId;
|
|
if (mLexicalHandler) {
|
|
return mLexicalHandler->StartDTD(nsDependentString(aName),
|
|
nsDependentString(aPublicId),
|
|
nsDependentString(aSystemId));
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsSAXXMLReader::HandleDoctypeDecl(const nsAString & aSubset,
|
|
const nsAString & aName,
|
|
const nsAString & aSystemId,
|
|
const nsAString & aPublicId,
|
|
nsISupports* aCatalogData)
|
|
{
|
|
if (mLexicalHandler)
|
|
return mLexicalHandler->EndDTD();
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsSAXXMLReader::HandleCharacterData(const char16_t *aData,
|
|
uint32_t aLength)
|
|
{
|
|
if (mContentHandler)
|
|
return mContentHandler->Characters(Substring(aData, aData+aLength));
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsSAXXMLReader::HandleStartNamespaceDecl(const char16_t *aPrefix,
|
|
const char16_t *aUri)
|
|
{
|
|
if (!mContentHandler)
|
|
return NS_OK;
|
|
|
|
char16_t nullChar = char16_t(0);
|
|
if (!aPrefix)
|
|
aPrefix = &nullChar;
|
|
if (!aUri)
|
|
aUri = &nullChar;
|
|
|
|
return mContentHandler->StartPrefixMapping(nsDependentString(aPrefix),
|
|
nsDependentString(aUri));
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsSAXXMLReader::HandleEndNamespaceDecl(const char16_t *aPrefix)
|
|
{
|
|
if (!mContentHandler)
|
|
return NS_OK;
|
|
|
|
if (aPrefix)
|
|
return mContentHandler->EndPrefixMapping(nsDependentString(aPrefix));
|
|
|
|
return mContentHandler->EndPrefixMapping(EmptyString());
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsSAXXMLReader::HandleProcessingInstruction(const char16_t *aTarget,
|
|
const char16_t *aData)
|
|
{
|
|
NS_ASSERTION(aTarget && aData, "null passed to handler");
|
|
if (mContentHandler) {
|
|
return mContentHandler->ProcessingInstruction(nsDependentString(aTarget),
|
|
nsDependentString(aData));
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsSAXXMLReader::HandleNotationDecl(const char16_t *aNotationName,
|
|
const char16_t *aSystemId,
|
|
const char16_t *aPublicId)
|
|
{
|
|
NS_ASSERTION(aNotationName, "null passed to handler");
|
|
if (mDTDHandler) {
|
|
char16_t nullChar = char16_t(0);
|
|
if (!aSystemId)
|
|
aSystemId = &nullChar;
|
|
if (!aPublicId)
|
|
aPublicId = &nullChar;
|
|
|
|
return mDTDHandler->NotationDecl(nsDependentString(aNotationName),
|
|
nsDependentString(aSystemId),
|
|
nsDependentString(aPublicId));
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsSAXXMLReader::HandleUnparsedEntityDecl(const char16_t *aEntityName,
|
|
const char16_t *aSystemId,
|
|
const char16_t *aPublicId,
|
|
const char16_t *aNotationName)
|
|
{
|
|
NS_ASSERTION(aEntityName && aNotationName, "null passed to handler");
|
|
if (mDTDHandler) {
|
|
char16_t nullChar = char16_t(0);
|
|
if (!aSystemId)
|
|
aSystemId = &nullChar;
|
|
if (!aPublicId)
|
|
aPublicId = &nullChar;
|
|
|
|
return mDTDHandler->UnparsedEntityDecl(nsDependentString(aEntityName),
|
|
nsDependentString(aSystemId),
|
|
nsDependentString(aPublicId),
|
|
nsDependentString(aNotationName));
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsSAXXMLReader::HandleXMLDeclaration(const char16_t *aVersion,
|
|
const char16_t *aEncoding,
|
|
int32_t aStandalone)
|
|
{
|
|
NS_ASSERTION(aVersion, "null passed to handler");
|
|
if (mDeclarationHandler) {
|
|
char16_t nullChar = char16_t(0);
|
|
if (!aEncoding)
|
|
aEncoding = &nullChar;
|
|
mDeclarationHandler->HandleXMLDeclaration(nsDependentString(aVersion),
|
|
nsDependentString(aEncoding),
|
|
aStandalone > 0);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsSAXXMLReader::ReportError(const char16_t* aErrorText,
|
|
const char16_t* aSourceText,
|
|
nsIScriptError *aError,
|
|
bool *_retval)
|
|
{
|
|
NS_PRECONDITION(aError && aSourceText && aErrorText, "Check arguments!!!");
|
|
// Normally, the expat driver should report the error.
|
|
*_retval = true;
|
|
|
|
if (mErrorHandler) {
|
|
uint32_t lineNumber;
|
|
nsresult rv = aError->GetLineNumber(&lineNumber);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
uint32_t columnNumber;
|
|
rv = aError->GetColumnNumber(&columnNumber);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
nsCOMPtr<nsISAXLocator> locator = new nsSAXLocator(mPublicId,
|
|
mSystemId,
|
|
lineNumber,
|
|
columnNumber);
|
|
if (!locator)
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
|
|
rv = mErrorHandler->FatalError(locator, nsDependentString(aErrorText));
|
|
if (NS_SUCCEEDED(rv)) {
|
|
// The error handler has handled the script error. Don't log to console.
|
|
*_retval = false;
|
|
}
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
// nsISAXXMLReader
|
|
|
|
NS_IMETHODIMP
|
|
nsSAXXMLReader::GetBaseURI(nsIURI **aBaseURI)
|
|
{
|
|
NS_IF_ADDREF(*aBaseURI = mBaseURI);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsSAXXMLReader::SetBaseURI(nsIURI *aBaseURI)
|
|
{
|
|
mBaseURI = aBaseURI;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsSAXXMLReader::GetContentHandler(nsISAXContentHandler **aContentHandler)
|
|
{
|
|
NS_IF_ADDREF(*aContentHandler = mContentHandler);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsSAXXMLReader::SetContentHandler(nsISAXContentHandler *aContentHandler)
|
|
{
|
|
mContentHandler = aContentHandler;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsSAXXMLReader::GetDtdHandler(nsISAXDTDHandler **aDtdHandler)
|
|
{
|
|
NS_IF_ADDREF(*aDtdHandler = mDTDHandler);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsSAXXMLReader::SetDtdHandler(nsISAXDTDHandler *aDtdHandler)
|
|
{
|
|
mDTDHandler = aDtdHandler;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsSAXXMLReader::GetErrorHandler(nsISAXErrorHandler **aErrorHandler)
|
|
{
|
|
NS_IF_ADDREF(*aErrorHandler = mErrorHandler);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsSAXXMLReader::SetErrorHandler(nsISAXErrorHandler *aErrorHandler)
|
|
{
|
|
mErrorHandler = aErrorHandler;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsSAXXMLReader::SetFeature(const nsAString &aName, bool aValue)
|
|
{
|
|
if (aName.EqualsLiteral("http://xml.org/sax/features/namespace-prefixes")) {
|
|
mEnableNamespacePrefixes = aValue;
|
|
return NS_OK;
|
|
}
|
|
return NS_ERROR_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsSAXXMLReader::GetFeature(const nsAString &aName, bool *aResult)
|
|
{
|
|
if (aName.EqualsLiteral("http://xml.org/sax/features/namespace-prefixes")) {
|
|
*aResult = mEnableNamespacePrefixes;
|
|
return NS_OK;
|
|
}
|
|
return NS_ERROR_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsSAXXMLReader::GetDeclarationHandler(nsIMozSAXXMLDeclarationHandler **aDeclarationHandler) {
|
|
NS_IF_ADDREF(*aDeclarationHandler = mDeclarationHandler);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsSAXXMLReader::SetDeclarationHandler(nsIMozSAXXMLDeclarationHandler *aDeclarationHandler) {
|
|
mDeclarationHandler = aDeclarationHandler;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsSAXXMLReader::GetLexicalHandler(nsISAXLexicalHandler **aLexicalHandler)
|
|
{
|
|
NS_IF_ADDREF(*aLexicalHandler = mLexicalHandler);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsSAXXMLReader::SetLexicalHandler(nsISAXLexicalHandler *aLexicalHandler)
|
|
{
|
|
mLexicalHandler = aLexicalHandler;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsSAXXMLReader::SetProperty(const nsAString &aName, nsISupports* aValue)
|
|
{
|
|
return NS_ERROR_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsSAXXMLReader::GetProperty(const nsAString &aName, bool *aResult)
|
|
{
|
|
return NS_ERROR_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsSAXXMLReader::ParseFromString(const nsAString &aStr,
|
|
const char *aContentType)
|
|
{
|
|
// Don't call this in the middle of an async parse
|
|
NS_ENSURE_TRUE(!mIsAsyncParse, NS_ERROR_FAILURE);
|
|
|
|
NS_ConvertUTF16toUTF8 data(aStr);
|
|
|
|
// The new stream holds a reference to the buffer
|
|
nsCOMPtr<nsIInputStream> stream;
|
|
nsresult rv = NS_NewByteInputStream(getter_AddRefs(stream),
|
|
data.get(), data.Length(),
|
|
NS_ASSIGNMENT_DEPEND);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
return ParseFromStream(stream, "UTF-8", aContentType);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsSAXXMLReader::ParseFromStream(nsIInputStream *aStream,
|
|
const char *aCharset,
|
|
const char *aContentType)
|
|
{
|
|
// Don't call this in the middle of an async parse
|
|
NS_ENSURE_TRUE(!mIsAsyncParse, NS_ERROR_FAILURE);
|
|
|
|
NS_ENSURE_ARG(aStream);
|
|
NS_ENSURE_ARG(aContentType);
|
|
|
|
// Put the nsCOMPtr out here so we hold a ref to the stream as needed
|
|
nsresult rv;
|
|
nsCOMPtr<nsIInputStream> bufferedStream;
|
|
if (!NS_InputStreamIsBuffered(aStream)) {
|
|
rv = NS_NewBufferedInputStream(getter_AddRefs(bufferedStream),
|
|
aStream, 4096);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
aStream = bufferedStream;
|
|
}
|
|
|
|
rv = EnsureBaseURI();
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
nsCOMPtr<nsIPrincipal> nullPrincipal = NullPrincipal::Create();
|
|
|
|
// The following channel is never openend, so it does not matter what
|
|
// securityFlags we pass; let's follow the principle of least privilege.
|
|
nsCOMPtr<nsIChannel> parserChannel;
|
|
rv = NS_NewInputStreamChannel(getter_AddRefs(parserChannel),
|
|
mBaseURI,
|
|
aStream,
|
|
nullPrincipal,
|
|
nsILoadInfo::SEC_REQUIRE_SAME_ORIGIN_DATA_IS_BLOCKED,
|
|
nsIContentPolicy::TYPE_OTHER,
|
|
nsDependentCString(aContentType));
|
|
if (!parserChannel || NS_FAILED(rv))
|
|
return NS_ERROR_FAILURE;
|
|
|
|
if (aCharset)
|
|
parserChannel->SetContentCharset(nsDependentCString(aCharset));
|
|
|
|
rv = InitParser(nullptr, parserChannel);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
rv = mListener->OnStartRequest(parserChannel, nullptr);
|
|
if (NS_FAILED(rv))
|
|
parserChannel->Cancel(rv);
|
|
|
|
/* When parsing a new document, we need to clear the XML identifiers.
|
|
HandleStartDTD will set these values from the DTD declaration tag.
|
|
We won't have them, of course, if there's a well-formedness error
|
|
before the DTD tag (such as a space before an XML declaration).
|
|
*/
|
|
mSystemId.Truncate();
|
|
mPublicId.Truncate();
|
|
|
|
nsresult status;
|
|
parserChannel->GetStatus(&status);
|
|
|
|
uint64_t offset = 0;
|
|
while (NS_SUCCEEDED(rv) && NS_SUCCEEDED(status)) {
|
|
uint64_t available;
|
|
rv = aStream->Available(&available);
|
|
if (rv == NS_BASE_STREAM_CLOSED) {
|
|
rv = NS_OK;
|
|
available = 0;
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
parserChannel->Cancel(rv);
|
|
break;
|
|
}
|
|
if (! available)
|
|
break; // blocking input stream has none available when done
|
|
|
|
if (available > UINT32_MAX)
|
|
available = UINT32_MAX;
|
|
|
|
rv = mListener->OnDataAvailable(parserChannel, nullptr,
|
|
aStream,
|
|
offset,
|
|
(uint32_t)available);
|
|
if (NS_SUCCEEDED(rv))
|
|
offset += available;
|
|
else
|
|
parserChannel->Cancel(rv);
|
|
parserChannel->GetStatus(&status);
|
|
}
|
|
rv = mListener->OnStopRequest(parserChannel, nullptr, status);
|
|
mListener = nullptr;
|
|
|
|
return rv;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsSAXXMLReader::ParseAsync(nsIRequestObserver *aObserver)
|
|
{
|
|
mParserObserver = aObserver;
|
|
mIsAsyncParse = true;
|
|
return NS_OK;
|
|
}
|
|
|
|
// nsIRequestObserver
|
|
|
|
NS_IMETHODIMP
|
|
nsSAXXMLReader::OnStartRequest(nsIRequest *aRequest, nsISupports *aContext)
|
|
{
|
|
NS_ENSURE_TRUE(mIsAsyncParse, NS_ERROR_FAILURE);
|
|
nsresult rv;
|
|
rv = EnsureBaseURI();
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
nsCOMPtr<nsIChannel> channel = do_QueryInterface(aRequest);
|
|
rv = InitParser(mParserObserver, channel);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
// we don't need or want this anymore
|
|
mParserObserver = nullptr;
|
|
return mListener->OnStartRequest(aRequest, aContext);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsSAXXMLReader::OnStopRequest(nsIRequest *aRequest, nsISupports *aContext,
|
|
nsresult status)
|
|
{
|
|
NS_ENSURE_TRUE(mIsAsyncParse, NS_ERROR_FAILURE);
|
|
NS_ENSURE_STATE(mListener);
|
|
nsresult rv = mListener->OnStopRequest(aRequest, aContext, status);
|
|
mListener = nullptr;
|
|
mIsAsyncParse = false;
|
|
return rv;
|
|
}
|
|
|
|
// nsIStreamListener
|
|
|
|
NS_IMETHODIMP
|
|
nsSAXXMLReader::OnDataAvailable(nsIRequest *aRequest, nsISupports *aContext,
|
|
nsIInputStream *aInputStream, uint64_t offset,
|
|
uint32_t count)
|
|
{
|
|
NS_ENSURE_TRUE(mIsAsyncParse, NS_ERROR_FAILURE);
|
|
NS_ENSURE_STATE(mListener);
|
|
return mListener->OnDataAvailable(aRequest, aContext, aInputStream, offset,
|
|
count);
|
|
}
|
|
|
|
nsresult
|
|
nsSAXXMLReader::InitParser(nsIRequestObserver *aObserver, nsIChannel *aChannel)
|
|
{
|
|
nsresult rv;
|
|
|
|
// setup the parser
|
|
nsCOMPtr<nsIParser> parser = do_CreateInstance(kParserCID, &rv);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
parser->SetContentSink(this);
|
|
|
|
int32_t charsetSource = kCharsetFromDocTypeDefault;
|
|
nsAutoCString charset(NS_LITERAL_CSTRING("UTF-8"));
|
|
TryChannelCharset(aChannel, charsetSource, charset);
|
|
parser->SetDocumentCharset(charset, charsetSource);
|
|
|
|
rv = parser->Parse(mBaseURI, aObserver);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
mListener = do_QueryInterface(parser, &rv);
|
|
|
|
return rv;
|
|
}
|
|
|
|
// from nsDocument.cpp
|
|
bool
|
|
nsSAXXMLReader::TryChannelCharset(nsIChannel *aChannel,
|
|
int32_t& aCharsetSource,
|
|
nsACString& aCharset)
|
|
{
|
|
if (aCharsetSource >= kCharsetFromChannel)
|
|
return true;
|
|
|
|
if (aChannel) {
|
|
nsAutoCString charsetVal;
|
|
nsresult rv = aChannel->GetContentCharset(charsetVal);
|
|
if (NS_SUCCEEDED(rv)) {
|
|
nsAutoCString preferred;
|
|
if (!EncodingUtils::FindEncodingForLabel(charsetVal, preferred))
|
|
return false;
|
|
|
|
aCharset = preferred;
|
|
aCharsetSource = kCharsetFromChannel;
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
nsresult
|
|
nsSAXXMLReader::EnsureBaseURI()
|
|
{
|
|
if (mBaseURI)
|
|
return NS_OK;
|
|
|
|
return NS_NewURI(getter_AddRefs(mBaseURI), "about:blank");
|
|
}
|
|
|
|
nsresult
|
|
nsSAXXMLReader::SplitExpatName(const char16_t *aExpatName,
|
|
nsString &aURI,
|
|
nsString &aLocalName,
|
|
nsString &aQName)
|
|
{
|
|
/**
|
|
* Adapted from RDFContentSinkImpl
|
|
*
|
|
* Expat can send the following:
|
|
* localName
|
|
* namespaceURI<separator>localName
|
|
* namespaceURI<separator>localName<separator>prefix
|
|
*
|
|
* and we use 0xFFFF for the <separator>.
|
|
*
|
|
*/
|
|
|
|
NS_ASSERTION(aExpatName, "null passed to handler");
|
|
nsDependentString expatStr(aExpatName);
|
|
int32_t break1, break2 = kNotFound;
|
|
break1 = expatStr.FindChar(char16_t(0xFFFF));
|
|
|
|
if (break1 == kNotFound) {
|
|
aLocalName = expatStr; // no namespace
|
|
aURI.Truncate();
|
|
aQName = expatStr;
|
|
} else {
|
|
aURI = StringHead(expatStr, break1);
|
|
break2 = expatStr.FindChar(char16_t(0xFFFF), break1 + 1);
|
|
if (break2 == kNotFound) { // namespace, but no prefix
|
|
aLocalName = Substring(expatStr, break1 + 1);
|
|
aQName = aLocalName;
|
|
} else { // namespace with prefix
|
|
aLocalName = Substring(expatStr, break1 + 1, break2 - break1 - 1);
|
|
aQName = Substring(expatStr, break2 + 1) +
|
|
NS_LITERAL_STRING(":") + aLocalName;
|
|
}
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|