зеркало из https://github.com/mozilla/gecko-dev.git
120 строки
3.0 KiB
C++
120 строки
3.0 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
|
|
/* 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 "nsDOMSerializer.h"
|
|
|
|
#include "mozilla/Encoding.h"
|
|
#include "nsIDocument.h"
|
|
#include "nsIDocumentEncoder.h"
|
|
#include "nsComponentManagerUtils.h"
|
|
#include "nsContentCID.h"
|
|
#include "nsContentUtils.h"
|
|
#include "nsError.h"
|
|
#include "nsINode.h"
|
|
|
|
using namespace mozilla;
|
|
|
|
nsDOMSerializer::nsDOMSerializer()
|
|
{
|
|
}
|
|
|
|
static already_AddRefed<nsIDocumentEncoder>
|
|
SetUpEncoder(nsINode& aRoot, const nsAString& aCharset, ErrorResult& aRv)
|
|
{
|
|
nsCOMPtr<nsIDocumentEncoder> encoder = do_createDocumentEncoder("application/xhtml+xml");
|
|
if (!encoder) {
|
|
aRv.Throw(NS_ERROR_FAILURE);
|
|
return nullptr;
|
|
}
|
|
|
|
nsIDocument* doc = aRoot.OwnerDoc();
|
|
bool entireDocument = (doc == &aRoot);
|
|
|
|
// This method will fail if no document
|
|
nsresult rv = encoder->
|
|
NativeInit(doc, NS_LITERAL_STRING("application/xhtml+xml"),
|
|
nsIDocumentEncoder::OutputRaw |
|
|
nsIDocumentEncoder::OutputDontRewriteEncodingDeclaration);
|
|
|
|
if (NS_FAILED(rv)) {
|
|
aRv.Throw(rv);
|
|
return nullptr;
|
|
}
|
|
|
|
NS_ConvertUTF16toUTF8 charset(aCharset);
|
|
if (charset.IsEmpty()) {
|
|
doc->GetDocumentCharacterSet()->Name(charset);
|
|
}
|
|
rv = encoder->SetCharset(charset);
|
|
if (NS_FAILED(rv)) {
|
|
aRv.Throw(rv);
|
|
return nullptr;
|
|
}
|
|
|
|
// If we are working on the entire document we do not need to
|
|
// specify which part to serialize
|
|
if (!entireDocument) {
|
|
rv = encoder->SetNode(&aRoot);
|
|
}
|
|
|
|
if (NS_FAILED(rv)) {
|
|
aRv.Throw(rv);
|
|
return nullptr;
|
|
}
|
|
|
|
return encoder.forget();
|
|
}
|
|
|
|
void
|
|
nsDOMSerializer::SerializeToString(nsINode& aRoot, nsAString& aStr,
|
|
ErrorResult& aRv)
|
|
{
|
|
aStr.Truncate();
|
|
|
|
if (!nsContentUtils::CanCallerAccess(&aRoot)) {
|
|
aRv.Throw(NS_ERROR_DOM_SECURITY_ERR);
|
|
return;
|
|
}
|
|
|
|
nsCOMPtr<nsIDocumentEncoder> encoder =
|
|
SetUpEncoder(aRoot, EmptyString(), aRv);
|
|
if (aRv.Failed()) {
|
|
return;
|
|
}
|
|
|
|
nsresult rv = encoder->EncodeToString(aStr);
|
|
if (NS_FAILED(rv)) {
|
|
aRv.Throw(rv);
|
|
}
|
|
}
|
|
|
|
void
|
|
nsDOMSerializer::SerializeToStream(nsINode& aRoot, nsIOutputStream* aStream,
|
|
const nsAString& aCharset,
|
|
ErrorResult& aRv)
|
|
{
|
|
if (NS_WARN_IF(!aStream)) {
|
|
aRv.Throw(NS_ERROR_INVALID_ARG);
|
|
return;
|
|
}
|
|
|
|
// The charset arg can be empty, in which case we get the document's
|
|
// charset and use that when serializing.
|
|
|
|
// No point doing a CanCallerAccess check, because we can only be
|
|
// called by system JS or C++.
|
|
nsCOMPtr<nsIDocumentEncoder> encoder =
|
|
SetUpEncoder(aRoot, aCharset, aRv);
|
|
if (aRv.Failed()) {
|
|
return;
|
|
}
|
|
|
|
nsresult rv = encoder->EncodeToStream(aStream);
|
|
if (NS_FAILED(rv)) {
|
|
aRv.Throw(rv);
|
|
}
|
|
}
|