gecko-dev/netwerk/base/nsInputStreamChannel.cpp

/* -*- 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 "nsInputStreamChannel.h"

//-----------------------------------------------------------------------------
// nsInputStreamChannel

namespace mozilla {
namespace net {

nsresult nsInputStreamChannel::OpenContentStream(bool async,
                                                 nsIInputStream** result,
                                                 nsIChannel** channel) {
  NS_ENSURE_TRUE(mContentStream, NS_ERROR_NOT_INITIALIZED);

  // If content length is unknown, then we must guess.  In this case, we assume
  // the stream can tell us.  If the stream is a pipe, then this will not work.

  if (mContentLength < 0) {
    uint64_t avail;
    nsresult rv = mContentStream->Available(&avail);
    if (rv == NS_BASE_STREAM_CLOSED) {
      // This just means there's nothing in the stream
      avail = 0;
    } else if (NS_FAILED(rv)) {
      return rv;
    }
    mContentLength = avail;
  }

  EnableSynthesizedProgressEvents(true);

  NS_ADDREF(*result = mContentStream);
  return NS_OK;
}

//-----------------------------------------------------------------------------
// nsInputStreamChannel::nsISupports

NS_IMPL_ISUPPORTS_INHERITED(nsInputStreamChannel, nsBaseChannel,
                            nsIInputStreamChannel)

//-----------------------------------------------------------------------------
// nsInputStreamChannel::nsIInputStreamChannel

NS_IMETHODIMP
nsInputStreamChannel::SetURI(nsIURI* uri) {
  NS_ENSURE_TRUE(!URI(), NS_ERROR_ALREADY_INITIALIZED);
  nsBaseChannel::SetURI(uri);
  return NS_OK;
}

NS_IMETHODIMP
nsInputStreamChannel::GetContentStream(nsIInputStream** stream) {
  NS_IF_ADDREF(*stream = mContentStream);
  return NS_OK;
}

NS_IMETHODIMP
nsInputStreamChannel::SetContentStream(nsIInputStream* stream) {
  NS_ENSURE_TRUE(!mContentStream, NS_ERROR_ALREADY_INITIALIZED);
  mContentStream = stream;
  return NS_OK;
}

NS_IMETHODIMP
nsInputStreamChannel::GetSrcdocData(nsAString& aSrcdocData) {
  aSrcdocData = mSrcdocData;
  return NS_OK;
}

NS_IMETHODIMP
nsInputStreamChannel::SetSrcdocData(const nsAString& aSrcdocData) {
  mSrcdocData = aSrcdocData;
  mIsSrcdocChannel = true;
  return NS_OK;
}

NS_IMETHODIMP
nsInputStreamChannel::GetIsSrcdocChannel(bool* aIsSrcdocChannel) {
  *aIsSrcdocChannel = mIsSrcdocChannel;
  return NS_OK;
}

NS_IMETHODIMP
nsInputStreamChannel::GetBaseURI(nsIURI** aBaseURI) {
  *aBaseURI = mBaseURI;
  NS_IF_ADDREF(*aBaseURI);
  return NS_OK;
}

NS_IMETHODIMP
nsInputStreamChannel::SetBaseURI(nsIURI* aBaseURI) {
  mBaseURI = aBaseURI;
  return NS_OK;
}

}  // namespace net
}  // namespace mozilla