Expandable, Data Type-Neutral Buffer Class

CBuffer is an expandable buffer class which can expand when needed and allows insertion of data and many operation on buffer

Using the CBuffer Class

1. Instantiate the CBuffer object
2. Call the CBuffer Init method

CBuffer:Init(int nSizeOfBuffer, int nNbrOfElements, 
  int nIncrementalGrowthValue)

3. Insert data into the buffer by using any of the following mechanisms:

   • int CBuffer::PutData(BYTE *pBuff)

   • void CBuffer::operator+=(BYTE *pBuff)

   • int CBuffer::InserData(BYTE * pBuff,int nOffset)

4. Retrieve data from the buffer by calling any of the following methods:

   • int CBuffer::GetData(BYTE * pBuff,int nIndex)

   • BYTE *CBuffer::GetPointer(int nIndex) const

5. Use any of the following helper methods

   • m_Buffer.GetSize();

   • m_Buffer.GetTotalElements();

   • m_Buffer.GetStructureSize();

   • m_Buffer.GetFreeSp();

   • m_Buffer.GetFreeStSp();

Header File (lists available CBuffer methods)

#pragma once

class CBuffer 
{
public:
 CBuffer();
 virtual ~CBuffer();

 int Init(int,int,int);
 int PutData(BYTE*);
 void operator+=(BYTE *);
 
 int InserData(BYTE*,int);
 int GetData(BYTE*,int);
 int ExpandBuff(int);
 
 int GetSize();
 int GetTotalElements();
 int GetStructureSize();
 int GetFreeSp();
 int GetFreeStSp();
 
 BYTE *GetPointer(int nIndex)const;
 BYTE *CBuffer::operator[](int nIndex)const;
 
 private:
 BYTE *m_pBuff;
 int m_nStructSize;
 int m_nTotal;
 int m_nOffset;
 int m_nSize;
 int m_nStructOffset;
 int m_nIncerment;
};

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