michael@0: // Common/DynamicBuffer.h
michael@0: 
michael@0: #ifndef __COMMON_DYNAMICBUFFER_H
michael@0: #define __COMMON_DYNAMICBUFFER_H
michael@0: 
michael@0: #include "Buffer.h"
michael@0: 
michael@0: template <class T> class CDynamicBuffer: public CBuffer<T>
michael@0: {    
michael@0:   void GrowLength(size_t size)
michael@0:   {
michael@0:     size_t delta;
michael@0:     if (this->_capacity > 64)
michael@0:       delta = this->_capacity / 4;
michael@0:     else if (this->_capacity > 8)
michael@0:       delta = 16;
michael@0:     else
michael@0:       delta = 4;
michael@0:     delta = MyMax(delta, size);
michael@0:     SetCapacity(this->_capacity + delta);
michael@0:   }
michael@0: public:
michael@0:   CDynamicBuffer(): CBuffer<T>() {};
michael@0:   CDynamicBuffer(const CDynamicBuffer &buffer): CBuffer<T>(buffer) {};
michael@0:   CDynamicBuffer(size_t size): CBuffer<T>(size) {};
michael@0:   CDynamicBuffer& operator=(const CDynamicBuffer &buffer)
michael@0:   {
michael@0:     this->Free();
michael@0:     if(buffer._capacity > 0)
michael@0:     {
michael@0:       SetCapacity(buffer._capacity);
michael@0:       memmove(this->_items, buffer._items, buffer._capacity * sizeof(T));
michael@0:     }
michael@0:     return *this;
michael@0:   }
michael@0:   void EnsureCapacity(size_t capacity)
michael@0:   {
michael@0:     if (this->_capacity < capacity)
michael@0:       GrowLength(capacity - this->_capacity);
michael@0:   }
michael@0: };
michael@0: 
michael@0: typedef CDynamicBuffer<char> CCharDynamicBuffer;
michael@0: typedef CDynamicBuffer<wchar_t> CWCharDynamicBuffer;
michael@0: typedef CDynamicBuffer<unsigned char> CByteDynamicBuffer;
michael@0: 
michael@0: #endif