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55 lines
1.2 KiB
C++
Executable File
55 lines
1.2 KiB
C++
Executable File
// LimitedStreams.h
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#ifndef __LIMITEDSTREAMS_H
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#define __LIMITEDSTREAMS_H
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#include "../../Common/MyCom.h"
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#include "../IStream.h"
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class CLimitedSequentialInStream:
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public ISequentialInStream,
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public CMyUnknownImp
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{
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CMyComPtr<ISequentialInStream> _stream;
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UInt64 _size;
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UInt64 _pos;
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bool _wasFinished;
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public:
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void SetStream(ISequentialInStream *stream) { _stream = stream; }
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void Init(UInt64 streamSize)
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{
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_size = streamSize;
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_pos = 0;
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_wasFinished = false;
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}
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MY_UNKNOWN_IMP
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STDMETHOD(Read)(void *data, UInt32 size, UInt32 *processedSize);
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UInt64 GetSize() const { return _pos; }
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bool WasFinished() const { return _wasFinished; }
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};
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class CLimitedSequentialOutStream:
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public ISequentialOutStream,
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public CMyUnknownImp
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{
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CMyComPtr<ISequentialOutStream> _stream;
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UInt64 _size;
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bool _overflow;
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public:
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MY_UNKNOWN_IMP
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STDMETHOD(Write)(const void *data, UInt32 size, UInt32 *processedSize);
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void SetStream(ISequentialOutStream *stream) { _stream = stream; }
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void ReleaseStream() { _stream.Release(); }
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void Init(UInt64 size)
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{
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_size = size;
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_overflow = false;
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}
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bool IsFinishedOK() const { return (_size == 0 && !_overflow); }
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UInt64 GetRem() const { return _size; }
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};
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#endif
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