cscframe.cpp

一个通讯管理机的源代码。比较好用。推荐

#include "cscframe.h"


bool CCSCFrame::FrameToBuffer(CDataNode &dn)
{
	bool bRet = false;
	if(m_bIsSetup) 
	{ 
		WORD wDataSize = GetDataSize();
		dn.SetSize(wDataSize+4);
//		dn.m_wSize = wDataSize+5;
		dn.m_pbyData[0]=wDataSize+3;
		dn.m_pbyData[1]=m_byDAddr;
		dn.m_pbyData[2]=m_bySAddr; //src addr; 
		dn.m_pbyData[3]=m_byCID; //类型; 
		if (wDataSize)
			memcpy(dn.m_pbyData+4,m_pData,wDataSize); 
//		BYTE* pby = (dn.m_pbyData+4+wDataSize);
//		*pby = GetCHKSUM(dn.m_pbyData,wDataSize+4);
		bRet = true;
	} 
	return bRet;
}
void CCSCFrame::SetupFrame(CFrameNode *pFNSend)
{
	m_bySAddr = (BYTE)(pFNSend->m_wSAddr);
	m_byDAddr = (BYTE)(pFNSend->m_wDAddr);
	if (pFNSend->m_pbyData && pFNSend->m_wSize)
	{
		m_wLength = pFNSend->m_wSize;
		memcpy(m_pData,pFNSend->m_pbyData,pFNSend->m_wSize);
	}
	else m_wLength = 0;
	m_byCID = pFNSend->m_byCID;
	m_bIsSetup = true;
}

void CCSCFrame::FrameToBuf(CFrameNode& fn)
{
	fn.m_byCID = m_byCID;
	fn.m_wDAddr = m_byDAddr;
	fn.m_wSAddr = m_bySAddr;
	fn.m_wSize = m_wLength;
	if (fn.m_wSize)
	{
		fn.SetSize(fn.m_wSize);
		memcpy(fn.m_pbyData,m_pData,fn.m_wSize);
	}
}

bool CCSCFrame::BufferToFrame(CDQue* pPhyDQ)
{
	Reset();
	CDataNode *pDN = NULL;
	bool bIsComplete;
	m_wInLength = 0;
	while (bIsComplete = pPhyDQ->Get(pDN,0) && pDN)
	{
		WORD wSize = 0;
//		cout << "{" << pDN->m_wSize << "} ";
		while ((wSize<pDN->m_wSize) && (pDN->m_wSize < 32))
		{
//			char c[16];
//			sprintf(c,"\\%02x ",pDN->m_pbyData[wSize]);
//			cout << c;

			if (ByteIn(pDN->m_pbyData[wSize++]))
			{
				delete pDN;
//				cout  << endl;
				goto check;
			}
		}
//		cout  << endl;
		delete pDN;
	}
check:
	if (bIsComplete)
	{
		BYTE* pTemp = m_pbyInBuf;
//		WORD wSize = m_wInLength;
		m_wLength = *pTemp++ - 3;
		m_byDAddr = *pTemp++;
		m_bySAddr = *pTemp++;
		m_byCID = *pTemp++;
		if (m_wLength)
			memcpy(m_pData,pTemp,m_wLength);
//		pTemp += m_wLength;
		
//		if (*pTemp != GetCHKSUM(m_pbyInBuf,m_wInLength-1))
//			return false;
		m_bIsSetup = true;
	}
	return m_bIsSetup;
}

bool CCSCFrame::ByteIn(BYTE b)
{
	bool bRet = false;
	m_pbyInBuf[m_wInLength++] = b;
	if (m_wInLength == 1)
		m_wLength = m_pbyInBuf[0]+1;
	else if (m_wLength == m_wInLength)
		bRet = true;
	return bRet;
}