1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/src/win32/7zip/7z/CPP/Common/DynamicBuffer.h	Sat Mar 03 10:31:27 2012 -0600
     1.3 @@ -0,0 +1,47 @@
     1.4 +// Common/DynamicBuffer.h
     1.5 +
     1.6 +#ifndef __COMMON_DYNAMICBUFFER_H
     1.7 +#define __COMMON_DYNAMICBUFFER_H
     1.8 +
     1.9 +#include "Buffer.h"
    1.10 +
    1.11 +template <class T> class CDynamicBuffer: public CBuffer<T>
    1.12 +{
    1.13 +  void GrowLength(size_t size)
    1.14 +  {
    1.15 +    size_t delta;
    1.16 +    if (this->_capacity > 64)
    1.17 +      delta = this->_capacity / 4;
    1.18 +    else if (this->_capacity > 8)
    1.19 +      delta = 16;
    1.20 +    else
    1.21 +      delta = 4;
    1.22 +    delta = MyMax(delta, size);
    1.23 +    SetCapacity(this->_capacity + delta);
    1.24 +  }
    1.25 +public:
    1.26 +  CDynamicBuffer(): CBuffer<T>() {};
    1.27 +  CDynamicBuffer(const CDynamicBuffer &buffer): CBuffer<T>(buffer) {};
    1.28 +  CDynamicBuffer(size_t size): CBuffer<T>(size) {};
    1.29 +  CDynamicBuffer& operator=(const CDynamicBuffer &buffer)
    1.30 +  {
    1.31 +    this->Free();
    1.32 +    if (buffer._capacity > 0)
    1.33 +    {
    1.34 +      SetCapacity(buffer._capacity);
    1.35 +      memmove(this->_items, buffer._items, buffer._capacity * sizeof(T));
    1.36 +    }
    1.37 +    return *this;
    1.38 +  }
    1.39 +  void EnsureCapacity(size_t capacity)
    1.40 +  {
    1.41 +    if (this->_capacity < capacity)
    1.42 +      GrowLength(capacity - this->_capacity);
    1.43 +  }
    1.44 +};
    1.45 +
    1.46 +typedef CDynamicBuffer<char> CCharDynamicBuffer;
    1.47 +typedef CDynamicBuffer<wchar_t> CWCharDynamicBuffer;
    1.48 +typedef CDynamicBuffer<unsigned char> CByteDynamicBuffer;
    1.49 +
    1.50 +#endif