1/* 2 * Copyright 2009,2011, Haiku, Inc. 3 * Distributed under the terms of the MIT License. 4 */ 5#ifndef _PACKAGE__HPKG__PACKAGE_DATA_READER_H_ 6#define _PACKAGE__HPKG__PACKAGE_DATA_READER_H_ 7 8 9#include <package/hpkg/DataReader.h> 10 11 12namespace BPackageKit { 13 14namespace BHPKG { 15 16 17class BBufferCache; 18class BDataOutput; 19class BPackageData; 20 21 22class BPackageDataReader : public BDataReader { 23public: 24 BPackageDataReader(BDataReader* dataReader); 25 virtual ~BPackageDataReader(); 26 27 virtual status_t Init(const BPackageData& data) = 0; 28 29 virtual status_t ReadData(off_t offset, void* buffer, 30 size_t size); 31 virtual status_t ReadDataToOutput(off_t offset, size_t size, 32 BDataOutput* output) = 0; 33 34 virtual uint64 Size() const = 0; 35 virtual size_t BlockSize() const = 0; 36 37protected: 38 BDataReader* fDataReader; 39}; 40 41 42class BPackageDataReaderFactory { 43public: 44 BPackageDataReaderFactory( 45 BBufferCache* bufferCache); 46 47 status_t CreatePackageDataReader(BDataReader* dataReader, 48 const BPackageData& data, 49 BPackageDataReader*& _reader); 50 51private: 52 BBufferCache* fBufferCache; 53}; 54 55 56} // namespace BHPKG 57 58} // namespace BPackageKit 59 60 61#endif // _PACKAGE__HPKG__PACKAGE_DATA_READER_H_ 62