зеркало из https://github.com/mozilla/gecko-dev.git
59 строки
1.9 KiB
C++
59 строки
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 "TemporaryBlobImpl.h"
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namespace mozilla {
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namespace dom {
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NS_IMPL_ISUPPORTS_INHERITED0(TemporaryBlobImpl, BlobImpl)
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TemporaryBlobImpl::TemporaryBlobImpl(PRFileDesc* aFD, uint64_t aStartPos,
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uint64_t aLength,
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const nsAString& aContentType)
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: BaseBlobImpl(aContentType, aLength)
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, mStartPos(aStartPos)
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{
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mFileDescOwner = new nsTemporaryFileInputStream::FileDescOwner(aFD);
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}
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TemporaryBlobImpl::TemporaryBlobImpl(const TemporaryBlobImpl* aOther,
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uint64_t aStart, uint64_t aLength,
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const nsAString& aContentType)
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: BaseBlobImpl(aContentType, aLength)
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, mStartPos(aStart)
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, mFileDescOwner(aOther->mFileDescOwner)
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{}
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already_AddRefed<BlobImpl>
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TemporaryBlobImpl::CreateSlice(uint64_t aStart, uint64_t aLength,
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const nsAString& aContentType,
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ErrorResult& aRv)
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{
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if (aStart + aLength > mLength) {
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aRv.Throw(NS_ERROR_UNEXPECTED);
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return nullptr;
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}
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RefPtr<BlobImpl> impl =
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new TemporaryBlobImpl(this, aStart + mStartPos,
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aLength, aContentType);
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return impl.forget();
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}
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void
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TemporaryBlobImpl::GetInternalStream(nsIInputStream** aStream,
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ErrorResult& aRv)
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{
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nsCOMPtr<nsIInputStream> stream =
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new nsTemporaryFileInputStream(mFileDescOwner, mStartPos,
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mStartPos + mLength);
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stream.forget(aStream);
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}
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} // namespace dom
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} // namespace mozilla
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