103 lines
3.3 KiB
C++
103 lines
3.3 KiB
C++
/*
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* Copyright (C) 2019 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include "Blob.h"
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#include "Document.h"
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#include "ExceptionCode.h"
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#include "FileReaderLoader.h"
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#include "FileReaderLoaderClient.h"
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#include "SharedBuffer.h"
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#include <JavaScriptCore/ArrayBuffer.h>
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#include <wtf/CompletionHandler.h>
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namespace WebCore {
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class BlobLoader final : public FileReaderLoaderClient {
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WTF_MAKE_FAST_ALLOCATED;
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public:
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explicit BlobLoader(CompletionHandler<void(BlobLoader&)>&&);
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~BlobLoader();
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void start(Blob&, ScriptExecutionContext*, FileReaderLoader::ReadType);
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void cancel();
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bool isLoading() const { return m_loader && m_completionHandler; }
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String stringResult() const { return m_loader ? m_loader->stringResult() : String(); }
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RefPtr<JSC::ArrayBuffer> arrayBufferResult() const { return m_loader ? m_loader->arrayBufferResult() : nullptr; }
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std::optional<ExceptionCode> errorCode() const { return m_loader ? m_loader->errorCode() : std::nullopt; }
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private:
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void didStartLoading() final { }
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void didReceiveData() final { }
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void didFinishLoading() final;
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void didFail(ExceptionCode errorCode) final;
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void complete();
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std::unique_ptr<FileReaderLoader> m_loader;
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CompletionHandler<void(BlobLoader&)> m_completionHandler;
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};
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inline BlobLoader::BlobLoader(CompletionHandler<void(BlobLoader&)>&& completionHandler)
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: m_completionHandler(WTFMove(completionHandler))
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{
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}
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inline BlobLoader::~BlobLoader()
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{
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if (isLoading())
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cancel();
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}
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inline void BlobLoader::cancel()
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{
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if (m_loader)
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m_loader->cancel();
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if (m_completionHandler)
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m_completionHandler(*this);
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}
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inline void BlobLoader::start(Blob& blob, ScriptExecutionContext* context, FileReaderLoader::ReadType readType)
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{
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ASSERT(!m_loader);
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m_loader = makeUnique<FileReaderLoader>(readType, this);
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m_loader->start(context, blob);
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}
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inline void BlobLoader::didFinishLoading()
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{
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m_completionHandler(*this);
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}
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inline void BlobLoader::didFail(ExceptionCode)
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{
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m_completionHandler(*this);
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}
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} // namespace WebCore
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