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/* -*- 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 "MutableBlobStreamListener.h"
#include "MutableBlobStorage.h"
#include "nsIInputStream.h"
namespace mozilla {
namespace dom {
MutableBlobStreamListener::MutableBlobStreamListener(MutableBlobStorage::MutableBlobStorageType aStorageType,
nsISupports* aParent,
const nsACString& aContentType,
MutableBlobStorageCallback* aCallback)
: mCallback(aCallback)
, mParent(aParent)
, mStorageType(aStorageType)
, mContentType(aContentType)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(aCallback);
}
MutableBlobStreamListener::~MutableBlobStreamListener()
{
MOZ_ASSERT(NS_IsMainThread());
}
NS_IMPL_ISUPPORTS(MutableBlobStreamListener,
nsIStreamListener,
nsIRequestObserver)
NS_IMETHODIMP
MutableBlobStreamListener::OnStartRequest(nsIRequest* aRequest, nsISupports* aContext)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(!mStorage);
mStorage = new MutableBlobStorage(mStorageType);
return NS_OK;
}
NS_IMETHODIMP
MutableBlobStreamListener::OnStopRequest(nsIRequest* aRequest, nsISupports* aContext,
nsresult aStatus)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(mStorage);
// Resetting mStorage to nullptr.
RefPtr<MutableBlobStorage> storage;
storage.swap(mStorage);
// Let's propagate the error simulating a failure of the storage.
if (NS_FAILED(aStatus)) {
mCallback->BlobStoreCompleted(storage, nullptr, aStatus);
return NS_OK;
}
storage->GetBlobWhenReady(mParent, mContentType, mCallback);
return NS_OK;
}
NS_IMETHODIMP
MutableBlobStreamListener::OnDataAvailable(nsIRequest* aRequest,
nsISupports* aContext,
nsIInputStream* aStream,
uint64_t aSourceOffset,
uint32_t aCount)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(mStorage);
uint32_t countRead;
return aStream->ReadSegments(WriteSegmentFun, this, aCount, &countRead);
}
nsresult
MutableBlobStreamListener::WriteSegmentFun(nsIInputStream* aWriterStream,
void* aClosure,
const char* aFromSegment,
uint32_t aToOffset,
uint32_t aCount,
uint32_t* aWriteCount)
{
MOZ_ASSERT(NS_IsMainThread());
MutableBlobStreamListener* self = static_cast<MutableBlobStreamListener*>(aClosure);
MOZ_ASSERT(self->mStorage);
nsresult rv = self->mStorage->Append(aFromSegment, aCount);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
*aWriteCount = aCount;
return NS_OK;
}
} // namespace net
} // namespace mozilla
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