gecko-dev/netwerk/base/nsSimpleStreamListener.cpp

78 строки
2.6 KiB
C++

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* 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 "nsSimpleStreamListener.h"
//
//----------------------------------------------------------------------------
// nsISupports implementation...
//----------------------------------------------------------------------------
//
NS_IMPL_ISUPPORTS(nsSimpleStreamListener,
nsISimpleStreamListener,
nsIStreamListener,
nsIRequestObserver)
//
//----------------------------------------------------------------------------
// nsIRequestObserver implementation...
//----------------------------------------------------------------------------
//
NS_IMETHODIMP
nsSimpleStreamListener::OnStartRequest(nsIRequest *aRequest,
nsISupports *aContext)
{
return mObserver ?
mObserver->OnStartRequest(aRequest, aContext) : NS_OK;
}
NS_IMETHODIMP
nsSimpleStreamListener::OnStopRequest(nsIRequest* request,
nsISupports *aContext,
nsresult aStatus)
{
return mObserver ?
mObserver->OnStopRequest(request, aContext, aStatus) : NS_OK;
}
//
//----------------------------------------------------------------------------
// nsIStreamListener implementation...
//----------------------------------------------------------------------------
//
NS_IMETHODIMP
nsSimpleStreamListener::OnDataAvailable(nsIRequest* request,
nsISupports *aContext,
nsIInputStream *aSource,
uint64_t aOffset,
uint32_t aCount)
{
uint32_t writeCount;
nsresult rv = mSink->WriteFrom(aSource, aCount, &writeCount);
//
// Equate zero bytes read and NS_SUCCEEDED to stopping the read.
//
if (NS_SUCCEEDED(rv) && (writeCount == 0))
return NS_BASE_STREAM_CLOSED;
return rv;
}
//
//----------------------------------------------------------------------------
// nsISimpleStreamListener implementation...
//----------------------------------------------------------------------------
//
NS_IMETHODIMP
nsSimpleStreamListener::Init(nsIOutputStream *aSink,
nsIRequestObserver *aObserver)
{
NS_PRECONDITION(aSink, "null output stream");
mSink = aSink;
mObserver = aObserver;
return NS_OK;
}