Expandable, Data Type-Neutral Buffer Class

Friday Feb 11th 2000 by Abrar Ahmad

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

In order to use the class, simply do the following. (Remember that if any of this is unclear, I have included a demo application that will hopefully clear up any misunderstandings.
  1. Instantiate the CBuffer object
  2. Call the CBuffer Init method
  3. CBuffer:Init(int nSizeOfBuffer, int nNbrOfElements, 
      int nIncrementalGrowthValue)
  4. 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)
  5. 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
  6. 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 
 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;
 BYTE *m_pBuff;
 int m_nStructSize;
 int m_nTotal;
 int m_nOffset;
 int m_nSize;
 int m_nStructOffset;
 int m_nIncerment;


Download demo project - 14 Kb
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