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 12 namespace BPackageKit { 13 14 namespace BHPKG { 15 16 17 class BBufferCache; 18 class BDataOutput; 19 class BPackageData; 20 21 22 class BPackageDataReader : public BDataReader { 23 public: 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 37 protected: 38 BDataReader* fDataReader; 39 }; 40 41 42 class BPackageDataReaderFactory { 43 public: 44 BPackageDataReaderFactory( 45 BBufferCache* bufferCache); 46 47 status_t CreatePackageDataReader(BDataReader* dataReader, 48 const BPackageData& data, 49 BPackageDataReader*& _reader); 50 51 private: 52 BBufferCache* fBufferCache; 53 }; 54 55 56 } // namespace BHPKG 57 58 } // namespace BPackageKit 59 60 61 #endif // _PACKAGE__HPKG__PACKAGE_DATA_READER_H_ 62