1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/src/win32/7zip/7z/CPP/7zip/Compress/LzOutWindow.h	Sat Mar 03 10:31:27 2012 -0600
     1.3 @@ -0,0 +1,66 @@
     1.4 +// LzOutWindow.h
     1.5 +
     1.6 +#ifndef __LZ_OUT_WINDOW_H
     1.7 +#define __LZ_OUT_WINDOW_H
     1.8 +
     1.9 +#include "../IStream.h"
    1.10 +
    1.11 +#include "../Common/OutBuffer.h"
    1.12 +
    1.13 +#ifndef _NO_EXCEPTIONS
    1.14 +typedef COutBufferException CLzOutWindowException;
    1.15 +#endif
    1.16 +
    1.17 +class CLzOutWindow: public COutBuffer
    1.18 +{
    1.19 +public:
    1.20 +  void Init(bool solid = false);
    1.21 +  
    1.22 +  // distance >= 0, len > 0,
    1.23 +  bool CopyBlock(UInt32 distance, UInt32 len)
    1.24 +  {
    1.25 +    UInt32 pos = _pos - distance - 1;
    1.26 +    if (distance >= _pos)
    1.27 +    {
    1.28 +      if (!_overDict || distance >= _bufferSize)
    1.29 +        return false;
    1.30 +      pos += _bufferSize;
    1.31 +    }
    1.32 +    if (_limitPos - _pos > len && _bufferSize - pos > len)
    1.33 +    {
    1.34 +      const Byte *src = _buffer + pos;
    1.35 +      Byte *dest = _buffer + _pos;
    1.36 +      _pos += len;
    1.37 +      do
    1.38 +        *dest++ = *src++;
    1.39 +      while(--len != 0);
    1.40 +    }
    1.41 +    else do
    1.42 +    {
    1.43 +      if (pos == _bufferSize)
    1.44 +        pos = 0;
    1.45 +      _buffer[_pos++] = _buffer[pos++];
    1.46 +      if (_pos == _limitPos)
    1.47 +        FlushWithCheck();
    1.48 +    }
    1.49 +    while(--len != 0);
    1.50 +    return true;
    1.51 +  }
    1.52 +  
    1.53 +  void PutByte(Byte b)
    1.54 +  {
    1.55 +    _buffer[_pos++] = b;
    1.56 +    if (_pos == _limitPos)
    1.57 +      FlushWithCheck();
    1.58 +  }
    1.59 +  
    1.60 +  Byte GetByte(UInt32 distance) const
    1.61 +  {
    1.62 +    UInt32 pos = _pos - distance - 1;
    1.63 +    if (pos >= _bufferSize)
    1.64 +      pos += _bufferSize;
    1.65 +    return _buffer[pos];
    1.66 +  }
    1.67 +};
    1.68 +
    1.69 +#endif