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Copy pathArrayBuffer.cpp
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92 lines (78 loc) · 1.37 KB
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#include "stdafx.h"
#include "ArrayBuffer.h"
CArrayBuffer::CArrayBuffer()
{
m_pBuffer = nullptr;
}
CArrayBuffer::~CArrayBuffer()
{
if (m_pBuffer)free(m_pBuffer);
}
void CArrayBuffer::RemoveAll()
{
if (m_pBuffer)
{
free(m_pBuffer);
m_pBuffer = nullptr;
}
m_nBufSize = 0;
m_nBufLen = 0;
}
void CArrayBuffer::Resize(int nLen)
{
if (nLen == 0)RemoveAll();
else
{
if (m_pBuffer)
{
if (nLen>m_nBufSize)
{
m_nBufSize = nLen * m_nGrowMul;
uint8_t*p = (uint8_t*)realloc(m_pBuffer, m_nBufSize + 1);
assert(p);
if (!p)return;
m_pBuffer = p;
}
m_nBufLen = nLen;
m_pBuffer[nLen] = 0;
}
else
{
m_nBufSize = nLen * m_nGrowMul;
m_pBuffer = (uint8_t*)malloc(m_nBufSize + 1);
m_nBufLen = nLen;
m_pBuffer[nLen] = 0;
}
}
}
void CArrayBuffer::AddData(const void*pBuf, int nLen)
{
int sizOld = m_nBufLen;
Resize(sizOld + nLen);
memcpy(m_pBuffer + sizOld, pBuf, nLen);
}
void CArrayBuffer::RemoveData(int nLen) //´ÓÇ°Ãæɾ³ý
{
int sizOld = m_nBufLen;
if (nLen > sizOld)
{
RemoveAll();
return;
}
int sizNew = sizOld - nLen;
memmove(m_pBuffer, m_pBuffer + nLen, sizNew);
m_nBufLen = sizNew;
m_pBuffer[m_nBufLen] = 0;
}
uint8_t* CArrayBuffer::GetBuffer()
{
return m_pBuffer;
}
int CArrayBuffer::GetLength()
{
return m_nBufLen;
}
void CArrayBuffer::AddString(const std::string &str)
{
AddData(str.data(), str.length());
}