1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/src/win32/7zip/7z/CPP/7zip/Common/LimitedStreams.h	Sat Mar 03 10:31:27 2012 -0600
     1.3 @@ -0,0 +1,54 @@
     1.4 +// LimitedStreams.h
     1.5 +
     1.6 +#ifndef __LIMITEDSTREAMS_H
     1.7 +#define __LIMITEDSTREAMS_H
     1.8 +
     1.9 +#include "../../Common/MyCom.h"
    1.10 +#include "../IStream.h"
    1.11 +
    1.12 +class CLimitedSequentialInStream:
    1.13 +  public ISequentialInStream,
    1.14 +  public CMyUnknownImp
    1.15 +{
    1.16 +  CMyComPtr<ISequentialInStream> _stream;
    1.17 +  UInt64 _size;
    1.18 +  UInt64 _pos;
    1.19 +  bool _wasFinished;
    1.20 +public:
    1.21 +  void SetStream(ISequentialInStream *stream) { _stream = stream; }
    1.22 +  void Init(UInt64 streamSize)
    1.23 +  {
    1.24 +    _size = streamSize;
    1.25 +    _pos = 0;
    1.26 +    _wasFinished = false;
    1.27 +  }
    1.28 + 
    1.29 +  MY_UNKNOWN_IMP
    1.30 +
    1.31 +  STDMETHOD(Read)(void *data, UInt32 size, UInt32 *processedSize);
    1.32 +  UInt64 GetSize() const { return _pos; }
    1.33 +  bool WasFinished() const { return _wasFinished; }
    1.34 +};
    1.35 +
    1.36 +class CLimitedSequentialOutStream:
    1.37 +  public ISequentialOutStream,
    1.38 +  public CMyUnknownImp
    1.39 +{
    1.40 +  CMyComPtr<ISequentialOutStream> _stream;
    1.41 +  UInt64 _size;
    1.42 +  bool _overflow;
    1.43 +public:
    1.44 +  MY_UNKNOWN_IMP
    1.45 +  STDMETHOD(Write)(const void *data, UInt32 size, UInt32 *processedSize);
    1.46 +  void SetStream(ISequentialOutStream *stream) { _stream = stream; }
    1.47 +  void ReleaseStream() { _stream.Release(); }
    1.48 +  void Init(UInt64 size)
    1.49 +  {
    1.50 +    _size = size;
    1.51 +    _overflow = false;
    1.52 +  }
    1.53 +  bool IsFinishedOK() const { return (_size == 0 && !_overflow); }
    1.54 +  UInt64 GetRem() const { return _size; }
    1.55 +};
    1.56 +
    1.57 +#endif