misc/libphysfs/lzma/CPP/7zip/Compress/LZ/LZOutWindow.h
author unc0rr
Thu, 08 Mar 2018 21:58:59 +0100
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parent 12218 bb5522e88ab2
permissions -rw-r--r--
This should fix crash with custom bindings
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// LZOutWindow.h
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#ifndef __LZ_OUT_WINDOW_H
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#define __LZ_OUT_WINDOW_H
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#include "../../IStream.h"
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#include "../../Common/OutBuffer.h"
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#ifndef _NO_EXCEPTIONS
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typedef COutBufferException CLZOutWindowException;
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#endif
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class CLZOutWindow: public COutBuffer
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{
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public:
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  void Init(bool solid = false);
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  // distance >= 0, len > 0, 
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  bool CopyBlock(UInt32 distance, UInt32 len)
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  {
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    UInt32 pos = _pos - distance - 1;
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    if (distance >= _pos)
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    {
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      if (!_overDict || distance >= _bufferSize)
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        return false;
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      pos += _bufferSize;
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    }
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    if (_limitPos - _pos > len && _bufferSize - pos > len)
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    {
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      const Byte *src = _buffer + pos;
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      Byte *dest = _buffer + _pos;
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      _pos += len;
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      do
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        *dest++ = *src++;
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      while(--len != 0);
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    }
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    else do
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    {
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      if (pos == _bufferSize)
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        pos = 0;
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      _buffer[_pos++] = _buffer[pos++];
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      if (_pos == _limitPos)
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        FlushWithCheck();  
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    }
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    while(--len != 0);
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    return true;
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  }
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  void PutByte(Byte b)
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  {
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    _buffer[_pos++] = b;
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    if (_pos == _limitPos)
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      FlushWithCheck();  
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  }
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  Byte GetByte(UInt32 distance) const
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  {
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    UInt32 pos = _pos - distance - 1;
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    if (pos >= _bufferSize)
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      pos += _bufferSize;
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    return _buffer[pos]; 
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  }
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};
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#endif