mirror of
https://github.com/mozilla/gecko-dev.git
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78 lines
1.9 KiB
C++
78 lines
1.9 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 "MemoryStreamParent.h"
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#include "nsIInputStream.h"
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namespace mozilla {
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namespace dom {
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MemoryStreamParent::MemoryStreamParent(uint64_t aSize)
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: mSize(aSize)
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, mCurSize(0)
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{}
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mozilla::ipc::IPCResult
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MemoryStreamParent::RecvAddChunk(nsTArray<unsigned char>&& aData)
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{
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MOZ_ASSERT(mSize);
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uint64_t dataLength = aData.Length();
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if (!dataLength || mSize < (mCurSize + dataLength)) {
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return IPC_FAIL_NO_REASON(this);
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}
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void* buffer = malloc(dataLength);
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if (NS_WARN_IF(!buffer)) {
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return IPC_FAIL_NO_REASON(this);
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}
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memcpy(buffer, aData.Elements(), dataLength);
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mData.AppendElement(new MemoryBlobImpl::DataOwner(buffer, dataLength));
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mCurSize += dataLength;
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return IPC_OK();
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}
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void
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MemoryStreamParent::ActorDestroy(IProtocol::ActorDestroyReason)
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{
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}
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void
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MemoryStreamParent::GetStream(nsIInputStream** aInputStream)
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{
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if (mCurSize != mSize) {
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*aInputStream = nullptr;
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return;
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}
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nsCOMPtr<nsIMultiplexInputStream> stream =
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do_CreateInstance("@mozilla.org/io/multiplex-input-stream;1");
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if (NS_WARN_IF(!stream)) {
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*aInputStream = nullptr;
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return;
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}
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for (uint32_t i = 0; i < mData.Length(); ++i) {
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nsCOMPtr<nsIInputStream> dataStream;
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nsresult rv =
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MemoryBlobImpl::DataOwnerAdapter::Create(mData[i], 0, mData[i]->mLength,
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getter_AddRefs(dataStream));
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if (NS_WARN_IF(NS_FAILED(rv))) {
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*aInputStream = nullptr;
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return;
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}
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stream->AppendStream(dataStream);
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}
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stream.forget(aInputStream);
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}
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} // namespace dom
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} // namespace mozilla
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