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817fe1571d
MultipartBlobImpl always requires copying the incoming BlobImpl array. This copying, and its associated refcounting, is unnecessary in many cases, as we're just going to delete the copied-from array anyway. We might as well pass in ownership when creating the multipart blob and avoid all the overhead associated with copying and refcounting.
139 lines
4.0 KiB
C++
139 lines
4.0 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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#ifndef mozilla_dom_MultipartBlobImpl_h
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#define mozilla_dom_MultipartBlobImpl_h
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#include "mozilla/Attributes.h"
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#include "mozilla/CheckedInt.h"
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#include "mozilla/ErrorResult.h"
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#include "mozilla/Move.h"
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#include "mozilla/dom/File.h"
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#include "mozilla/dom/BlobBinding.h"
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#include "mozilla/dom/FileBinding.h"
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#include <algorithm>
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#include "nsPIDOMWindow.h"
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namespace mozilla {
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namespace dom {
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class MultipartBlobImpl final : public BlobImplBase
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{
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public:
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NS_DECL_ISUPPORTS_INHERITED
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// Create as a file
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static already_AddRefed<MultipartBlobImpl>
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Create(nsTArray<RefPtr<BlobImpl>>&& aBlobImpls,
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const nsAString& aName,
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const nsAString& aContentType,
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ErrorResult& aRv);
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// Create as a blob
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static already_AddRefed<MultipartBlobImpl>
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Create(nsTArray<RefPtr<BlobImpl>>&& aBlobImpls,
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const nsAString& aContentType,
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ErrorResult& aRv);
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// Create as a file to be later initialized
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explicit MultipartBlobImpl(const nsAString& aName)
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: BlobImplBase(aName, EmptyString(), UINT64_MAX),
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mIsFromNsIFile(false)
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{
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}
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// Create as a blob to be later initialized
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MultipartBlobImpl()
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: BlobImplBase(EmptyString(), UINT64_MAX),
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mIsFromNsIFile(false)
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{
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}
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void InitializeBlob(ErrorResult& aRv);
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void InitializeBlob(JSContext* aCx,
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const Sequence<Blob::BlobPart>& aData,
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const nsAString& aContentType,
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bool aNativeEOL,
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ErrorResult& aRv);
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void InitializeChromeFile(Blob& aData,
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const ChromeFilePropertyBag& aBag,
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ErrorResult& aRv);
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void InitializeChromeFile(nsPIDOMWindowInner* aWindow,
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const nsAString& aData,
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const ChromeFilePropertyBag& aBag,
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ErrorResult& aRv);
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void InitializeChromeFile(nsPIDOMWindowInner* aWindow,
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nsIFile* aData,
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const ChromeFilePropertyBag& aBag,
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bool aIsFromNsIFile,
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ErrorResult& aRv);
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virtual already_AddRefed<BlobImpl>
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CreateSlice(uint64_t aStart, uint64_t aLength,
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const nsAString& aContentType,
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ErrorResult& aRv) override;
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virtual uint64_t GetSize(ErrorResult& aRv) override
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{
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return mLength;
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}
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virtual void GetInternalStream(nsIInputStream** aInputStream,
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ErrorResult& aRv) override;
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virtual const nsTArray<RefPtr<BlobImpl>>* GetSubBlobImpls() const override
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{
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return mBlobImpls.Length() ? &mBlobImpls : nullptr;
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}
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virtual void GetMozFullPathInternal(nsAString& aFullPath,
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ErrorResult& aRv) const override;
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virtual nsresult
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SetMutable(bool aMutable) override;
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void SetName(const nsAString& aName)
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{
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mName = aName;
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}
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virtual bool MayBeClonedToOtherThreads() const override;
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protected:
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MultipartBlobImpl(nsTArray<RefPtr<BlobImpl>>&& aBlobImpls,
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const nsAString& aName,
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const nsAString& aContentType)
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: BlobImplBase(aName, aContentType, UINT64_MAX),
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mBlobImpls(Move(aBlobImpls)),
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mIsFromNsIFile(false)
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{
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}
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MultipartBlobImpl(nsTArray<RefPtr<BlobImpl>>&& aBlobImpls,
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const nsAString& aContentType)
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: BlobImplBase(aContentType, UINT64_MAX),
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mBlobImpls(Move(aBlobImpls)),
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mIsFromNsIFile(false)
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{
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}
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virtual ~MultipartBlobImpl() {}
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void SetLengthAndModifiedDate(ErrorResult& aRv);
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nsTArray<RefPtr<BlobImpl>> mBlobImpls;
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bool mIsFromNsIFile;
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};
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} // dom namespace
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} // mozilla namespace
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#endif // mozilla_dom_MultipartBlobImpl_h
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