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