nsSerializationHelper.cpp

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/* 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 "nsSerializationHelper.h"

#include "mozilla/Base64.h"

#include "nsISerializable.h"

#include "nsIObjectOutputStream.h"

#include "nsIObjectInputStream.h"

#include "nsString.h"

#include "nsBase64Encoder.h"

#include "nsComponentManagerUtils.h"

#include "nsStringStream.h"

using namespace mozilla;

nsresult NS_SerializeToString(nsISerializable* obj, nsACString& str) {

  RefPtr<nsBase64Encoder> stream(new nsBase64Encoder());

  if (!stream) return NS_ERROR_OUT_OF_MEMORY;

  nsCOMPtr<nsIObjectOutputStream> objstream = NS_NewObjectOutputStream(stream);

  nsresult rv =

      objstream->WriteCompoundObject(obj, NS_GET_IID(nsISupports), true);

  NS_ENSURE_SUCCESS(rv, rv);

  return stream->Finish(str);

nsresult NS_DeserializeObject(const nsACString& str, nsISupports** obj) {

  nsCString decodedData;

  nsresult rv = Base64Decode(str, decodedData);

  NS_ENSURE_SUCCESS(rv, rv);

  nsCOMPtr<nsIInputStream> stream;

  rv = NS_NewCStringInputStream(getter_AddRefs(stream), std::move(decodedData));

  NS_ENSURE_SUCCESS(rv, rv);

  nsCOMPtr<nsIObjectInputStream> objstream = NS_NewObjectInputStream(stream);

  return objstream->ReadObject(true, obj);

NS_IMPL_ISUPPORTS(nsSerializationHelper, nsISerializationHelper)

NS_IMETHODIMP

nsSerializationHelper::SerializeToString(nsISerializable* serializable,

                                         nsACString& _retval) {

  return NS_SerializeToString(serializable, _retval);

NS_IMETHODIMP

nsSerializationHelper::DeserializeObject(const nsACString& input,

                                         nsISupports** _retval) {

  return NS_DeserializeObject(input, _retval);