1/* 2 * Copyright (C) 2010 Google Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions are 6 * met: 7 * 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above 11 * copyright notice, this list of conditions and the following disclaimer 12 * in the documentation and/or other materials provided with the 13 * distribution. 14 * * Neither the name of Google Inc. nor the names of its 15 * contributors may be used to endorse or promote products derived from 16 * this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31#ifndef BlobResourceHandle_h 32#define BlobResourceHandle_h 33 34#include "FileStreamClient.h" 35#include "ResourceHandle.h" 36#include <wtf/PassRefPtr.h> 37#include <wtf/Vector.h> 38#include <wtf/text/WTFString.h> 39 40namespace WebCore { 41 42class AsyncFileStream; 43class BlobData; 44class FileStream; 45class ResourceHandleClient; 46class ResourceRequest; 47struct BlobDataItem; 48 49class BlobResourceHandle final : public FileStreamClient, public ResourceHandle { 50public: 51 static PassRefPtr<BlobResourceHandle> createAsync(BlobData*, const ResourceRequest&, ResourceHandleClient*); 52 53 static void loadResourceSynchronously(BlobData*, const ResourceRequest&, ResourceError&, ResourceResponse&, Vector<char>& data); 54 55 void start(); 56 int readSync(char*, int); 57 58 bool aborted() const { return m_aborted; } 59 60private: 61 BlobResourceHandle(BlobData*, const ResourceRequest&, ResourceHandleClient*, bool async); 62 virtual ~BlobResourceHandle(); 63 64 // FileStreamClient methods. 65 virtual void didGetSize(long long) override; 66 virtual void didOpen(bool) override; 67 virtual void didRead(int) override; 68 69 // ResourceHandle methods. 70 virtual void cancel() override; 71 virtual void continueDidReceiveResponse() override; 72 73 void doStart(); 74 void getSizeForNext(); 75 void seek(); 76 void consumeData(const char* data, int bytesRead); 77 void failed(int errorCode); 78 79 void readAsync(); 80 void readDataAsync(const BlobDataItem&); 81 void readFileAsync(const BlobDataItem&); 82 83 int readDataSync(const BlobDataItem&, char*, int); 84 int readFileSync(const BlobDataItem&, char*, int); 85 86 void notifyResponse(); 87 void notifyResponseOnSuccess(); 88 void notifyResponseOnError(); 89 void notifyReceiveData(const char*, int); 90 void notifyFail(int errorCode); 91 void notifyFinish(); 92 93 RefPtr<BlobData> m_blobData; 94 bool m_async; 95 RefPtr<AsyncFileStream> m_asyncStream; // For asynchronous loading. 96 RefPtr<FileStream> m_stream; // For synchronous loading. 97 Vector<char> m_buffer; 98 Vector<long long> m_itemLengthList; 99 int m_errorCode; 100 bool m_aborted; 101 long long m_rangeOffset; 102 long long m_rangeEnd; 103 long long m_rangeSuffixLength; 104 long long m_totalRemainingSize; 105 long long m_currentItemReadSize; 106 unsigned m_sizeItemCount; 107 unsigned m_readItemCount; 108 bool m_fileOpened; 109}; 110 111} // namespace WebCore 112 113#endif // BlobResourceHandle_h 114