125 lines
4.0 KiB
C++
125 lines
4.0 KiB
C++
/*
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* Copyright (C) 2010 Google 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 are
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* met:
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*
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* * 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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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following disclaimer
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* in the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Google Inc. nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include "BlobResourceHandle.h"
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#include "ExceptionCode.h"
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#include <wtf/URL.h>
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#include "TextEncoding.h"
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#include "ThreadableLoaderClient.h"
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#include <wtf/Forward.h>
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#include <wtf/WeakPtr.h>
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#include <wtf/text/WTFString.h>
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namespace JSC {
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class ArrayBuffer;
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}
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namespace WebCore {
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class Blob;
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class FileReaderLoaderClient;
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class ScriptExecutionContext;
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class TextResourceDecoder;
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class ThreadableLoader;
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class FileReaderLoader : public ThreadableLoaderClient {
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public:
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enum ReadType {
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ReadAsArrayBuffer,
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ReadAsBinaryString,
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ReadAsBlob,
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ReadAsText,
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ReadAsDataURL
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};
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// If client is given, do the loading asynchronously. Otherwise, load synchronously.
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WEBCORE_EXPORT FileReaderLoader(ReadType, FileReaderLoaderClient*);
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~FileReaderLoader();
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WEBCORE_EXPORT void start(ScriptExecutionContext*, Blob&);
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WEBCORE_EXPORT void cancel();
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// ThreadableLoaderClient
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void didReceiveResponse(unsigned long, const ResourceResponse&) override;
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void didReceiveData(const uint8_t*, int) override;
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void didFinishLoading(unsigned long) override;
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void didFail(const ResourceError&) override;
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String stringResult();
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WEBCORE_EXPORT RefPtr<JSC::ArrayBuffer> arrayBufferResult() const;
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unsigned bytesLoaded() const { return m_bytesLoaded; }
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unsigned totalBytes() const { return m_totalBytes; }
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std::optional<ExceptionCode> errorCode() const { return m_errorCode; }
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void setEncoding(const String&);
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void setDataType(const String& dataType) { m_dataType = dataType; }
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const URL& url() { return m_urlForReading; }
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bool isCompleted() const;
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private:
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void terminate();
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void cleanup();
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void failed(ExceptionCode);
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void convertToText();
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void convertToDataURL();
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static ExceptionCode httpStatusCodeToErrorCode(int);
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static ExceptionCode toErrorCode(BlobResourceHandle::Error);
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ReadType m_readType;
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WeakPtr<FileReaderLoaderClient> m_client;
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TextEncoding m_encoding;
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String m_dataType;
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URL m_urlForReading;
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RefPtr<ThreadableLoader> m_loader;
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RefPtr<JSC::ArrayBuffer> m_rawData;
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bool m_isRawDataConverted;
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String m_stringResult;
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RefPtr<Blob> m_blobResult;
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// The decoder used to decode the text data.
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RefPtr<TextResourceDecoder> m_decoder;
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bool m_variableLength;
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unsigned m_bytesLoaded;
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unsigned m_totalBytes;
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std::optional<ExceptionCode> m_errorCode;
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};
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} // namespace WebCore
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