148 lines
4.0 KiB
C++
148 lines
4.0 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "nsDOMSerializer.h"
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#include "nsIDocument.h"
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#include "nsIDocumentEncoder.h"
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#include "nsIDOMDocument.h"
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#include "nsComponentManagerUtils.h"
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#include "nsContentCID.h"
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#include "nsContentUtils.h"
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#include "nsError.h"
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#include "nsINode.h"
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using namespace mozilla;
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nsDOMSerializer::nsDOMSerializer()
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{
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}
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nsDOMSerializer::~nsDOMSerializer()
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{
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}
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// QueryInterface implementation for nsDOMSerializer
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(nsDOMSerializer)
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NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
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NS_INTERFACE_MAP_ENTRY(nsISupports)
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NS_INTERFACE_MAP_ENTRY(nsIDOMSerializer)
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NS_INTERFACE_MAP_END
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NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(nsDOMSerializer, mOwner)
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NS_IMPL_CYCLE_COLLECTING_ADDREF(nsDOMSerializer)
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NS_IMPL_CYCLE_COLLECTING_RELEASE(nsDOMSerializer)
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static nsresult
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SetUpEncoder(nsIDOMNode *aRoot, const nsACString& aCharset,
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nsIDocumentEncoder **aEncoder)
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{
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*aEncoder = nullptr;
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nsresult rv;
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nsCOMPtr<nsIDocumentEncoder> encoder =
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do_CreateInstance(NS_DOC_ENCODER_CONTRACTID_BASE "application/xhtml+xml", &rv);
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if (NS_FAILED(rv))
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return rv;
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bool entireDocument = true;
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nsCOMPtr<nsIDOMDocument> domDoc(do_QueryInterface(aRoot));
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if (!domDoc) {
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entireDocument = false;
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rv = aRoot->GetOwnerDocument(getter_AddRefs(domDoc));
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if (NS_FAILED(rv))
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return rv;
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}
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// This method will fail if no document
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rv = encoder->Init(domDoc, NS_LITERAL_STRING("application/xhtml+xml"),
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nsIDocumentEncoder::OutputRaw |
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nsIDocumentEncoder::OutputDontRewriteEncodingDeclaration);
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if (NS_FAILED(rv))
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return rv;
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nsAutoCString charset(aCharset);
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if (charset.IsEmpty()) {
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nsCOMPtr<nsIDocument> doc = do_QueryInterface(domDoc);
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NS_ASSERTION(doc, "Need a document");
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charset = doc->GetDocumentCharacterSet();
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}
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rv = encoder->SetCharset(charset);
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if (NS_FAILED(rv))
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return rv;
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// If we are working on the entire document we do not need to
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// specify which part to serialize
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if (!entireDocument) {
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rv = encoder->SetNode(aRoot);
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}
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if (NS_SUCCEEDED(rv)) {
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encoder.forget(aEncoder);
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}
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return rv;
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}
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void
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nsDOMSerializer::SerializeToString(nsINode& aRoot, nsAString& aStr,
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ErrorResult& rv)
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{
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rv = nsDOMSerializer::SerializeToString(aRoot.AsDOMNode(), aStr);
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}
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NS_IMETHODIMP
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nsDOMSerializer::SerializeToString(nsIDOMNode *aRoot, nsAString& _retval)
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{
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NS_ENSURE_ARG_POINTER(aRoot);
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_retval.Truncate();
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if (!nsContentUtils::CanCallerAccess(aRoot)) {
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return NS_ERROR_DOM_SECURITY_ERR;
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}
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nsCOMPtr<nsIDocumentEncoder> encoder;
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nsresult rv = SetUpEncoder(aRoot, EmptyCString(), getter_AddRefs(encoder));
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if (NS_FAILED(rv))
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return rv;
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return encoder->EncodeToString(_retval);
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}
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void
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nsDOMSerializer::SerializeToStream(nsINode& aRoot, nsIOutputStream* aStream,
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const nsAString& aCharset, ErrorResult& rv)
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{
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rv = nsDOMSerializer::SerializeToStream(aRoot.AsDOMNode(), aStream,
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NS_ConvertUTF16toUTF8(aCharset));
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}
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NS_IMETHODIMP
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nsDOMSerializer::SerializeToStream(nsIDOMNode *aRoot,
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nsIOutputStream *aStream,
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const nsACString& aCharset)
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{
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NS_ENSURE_ARG_POINTER(aRoot);
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NS_ENSURE_ARG_POINTER(aStream);
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// The charset arg can be empty, in which case we get the document's
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// charset and use that when serializing.
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if (!nsContentUtils::CanCallerAccess(aRoot)) {
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return NS_ERROR_DOM_SECURITY_ERR;
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}
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nsCOMPtr<nsIDocumentEncoder> encoder;
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nsresult rv = SetUpEncoder(aRoot, aCharset, getter_AddRefs(encoder));
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if (NS_FAILED(rv))
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return rv;
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return encoder->EncodeToStream(aStream);
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}
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