62 lines
1.2 KiB
C
62 lines
1.2 KiB
C
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/*
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* Copyright 2009, Ingo Weinhold, ingo_weinhold@gmx.de.
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* Distributed under the terms of the MIT License.
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*/
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#ifndef _PACKAGE__HPKG__PACKAGE_DATA_READER_H_
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#define _PACKAGE__HPKG__PACKAGE_DATA_READER_H_
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#include <package/hpkg/DataReader.h>
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namespace BPackageKit {
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namespace BHPKG {
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class BBufferCache;
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class BDataOutput;
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class BPackageData;
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class BPackageDataReader : public BDataReader {
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public:
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BPackageDataReader(BDataReader* dataReader);
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virtual ~BPackageDataReader();
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virtual status_t Init(const BPackageData& data) = 0;
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virtual status_t ReadData(off_t offset, void* buffer,
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size_t size);
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virtual status_t ReadDataToOutput(off_t offset, size_t size,
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BDataOutput* output) = 0;
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virtual uint64 Size() const = 0;
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virtual size_t BlockSize() const = 0;
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protected:
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BDataReader* fDataReader;
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};
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class BPackageDataReaderFactory {
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public:
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BPackageDataReaderFactory(
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BBufferCache* bufferCache);
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status_t CreatePackageDataReader(BDataReader* dataReader,
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const BPackageData& data,
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BPackageDataReader*& _reader);
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private:
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BBufferCache* fBufferCache;
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};
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} // namespace BHPKG
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} // namespace BPackageKit
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#endif // _PACKAGE__HPKG__PACKAGE_DATA_READER_H_
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