wnmj/Classes/Define/PacketAide.h

#ifndef PACKET_AIDE_HEAD_FILE
#define PACKET_AIDE_HEAD_FILE

#include "Types.h"

#pragma once

#pragma pack(1)

//////////////////////////////////////////////////////////////////////////////////

//<2F><><EFBFBD>ݶ<EFBFBD><DDB6><EFBFBD>
#define DTP_NULL					0								//<2F><>Ч<EFBFBD><D0A7><EFBFBD><EFBFBD>

//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
struct tagDataDescribe
{
	uint16							wDataSize;						//<2F><><EFBFBD>ݴ<EFBFBD>С
	uint16							wDataDescribe;					//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
};

//////////////////////////////////////////////////////////////////////////////////

//<2F><><EFBFBD>͸<EFBFBD><CDB8><EFBFBD><EFBFBD><EFBFBD>
class CSendPacketHelper
{
	//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
protected:
	uint16							m_wDataSize;					//<2F><><EFBFBD>ݴ<EFBFBD>С
	uint16							m_wMaxBytes;					//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>С
	uint8*							m_pcbBuffer;					//<2F><><EFBFBD><EFBFBD>ָ<EFBFBD><D6B8>

	//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
public:
	//<2F><><EFBFBD>캯<EFBFBD><ECBAAF>
	inline CSendPacketHelper(void * pcbBuffer, uint16 wMaxBytes);

	//<2F><><EFBFBD>ܺ<EFBFBD><DCBA><EFBFBD>
public:
	//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	inline void CleanData() { m_wDataSize=0; }
	//<2F><>ȡ<EFBFBD><C8A1>С
	inline uint16 GetDataSize() { return m_wDataSize; }
	//<2F><>ȡ<EFBFBD><C8A1><EFBFBD><EFBFBD>
	inline void * GetDataBuffer() { return m_pcbBuffer; }

	//<2F><><EFBFBD>ܺ<EFBFBD><DCBA><EFBFBD>
public:
	//<2F><><EFBFBD><EFBFBD><EFBFBD>ַ<EFBFBD>
	inline bool AddPacket(char* pszString , uint16 wDataType);
	//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	inline bool AddPacket(void * pData, uint16 wDataSize, uint16 wDataType);
};

//////////////////////////////////////////////////////////////////////////////////

//<2F><><EFBFBD>ո<EFBFBD><D5B8><EFBFBD><EFBFBD><EFBFBD>
class CRecvPacketHelper
{
	//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
protected:
	uint16							m_wDataPos;						//<2F><><EFBFBD>ݵ<EFBFBD>
	uint16							m_wDataSize;					//<2F><><EFBFBD>ݴ<EFBFBD>С
	uint8*							m_pcbBuffer;					//<2F><><EFBFBD><EFBFBD>ָ<EFBFBD><D6B8>

	//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
public:
	//<2F><><EFBFBD>캯<EFBFBD><ECBAAF>
	inline CRecvPacketHelper(void * pcbBuffer, uint16 wDataSize);

	//<2F><><EFBFBD>ܺ<EFBFBD><DCBA><EFBFBD>
public:
	//<2F><>ȡ<EFBFBD><C8A1><EFBFBD><EFBFBD>
	inline void * GetData(tagDataDescribe & DataDescribe);
};

//////////////////////////////////////////////////////////////////////////////////

//<2F><><EFBFBD>캯<EFBFBD><ECBAAF>
CSendPacketHelper::CSendPacketHelper(void * pcbBuffer, uint16 wMaxBytes)
{
	//<2F><><EFBFBD>ñ<EFBFBD><C3B1><EFBFBD>
	m_wDataSize=0;
	m_wMaxBytes=wMaxBytes;
	m_pcbBuffer=(uint8 *)pcbBuffer;

	return;
}

//<2F><><EFBFBD><EFBFBD><EFBFBD>ַ<EFBFBD>
bool CSendPacketHelper::AddPacket(char* pszString,uint16 wDataType)
{
	//<2F><><EFBFBD><EFBFBD><EFBFBD>ж<EFBFBD>
	ASSERT(pszString!=NULL);
	if (pszString[0]==0) return true;

	//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	return AddPacket((void *)pszString,strlen(pszString),wDataType);
}

//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
bool CSendPacketHelper::AddPacket(void * pData, uint16 wDataSize, uint16 wDataType)
{
	//Ч<><D0A7><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	ASSERT(wDataType!=DTP_NULL);
	ASSERT((wDataSize+sizeof(tagDataDescribe)+m_wDataSize)<=m_wMaxBytes);
	if ((wDataSize+sizeof(tagDataDescribe)+m_wDataSize)>m_wMaxBytes) return false;

	//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	ASSERT(m_pcbBuffer!=NULL);
	tagDataDescribe * pDataDescribe=(tagDataDescribe *)(m_pcbBuffer+m_wDataSize);
	pDataDescribe->wDataSize=wDataSize;
	pDataDescribe->wDataDescribe=wDataType;

	//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	if (wDataSize>0)
	{
		ASSERT(pData!=NULL);
		memcpy(pDataDescribe+1,pData,wDataSize);
	}

	//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	m_wDataSize+=sizeof(tagDataDescribe)+wDataSize;

	return true;
}

//////////////////////////////////////////////////////////////////////////////////

//<2F><><EFBFBD>캯<EFBFBD><ECBAAF>
CRecvPacketHelper::CRecvPacketHelper(void* pcbBuffer, uint16 wDataSize)
{
	//<2F><><EFBFBD>ñ<EFBFBD><C3B1><EFBFBD>
	m_wDataPos=0;
	m_wDataSize=wDataSize;
	m_pcbBuffer=(uint8 *)pcbBuffer;

	return;
}

//<2F><>ȡ<EFBFBD><C8A1><EFBFBD><EFBFBD>
void * CRecvPacketHelper::GetData(tagDataDescribe & DataDescribe)
{
	//Ч<><D0A7><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	if (m_wDataPos>=m_wDataSize) 
	{
		ASSERT(m_wDataPos==m_wDataSize);
		DataDescribe.wDataSize=0;
		DataDescribe.wDataDescribe=DTP_NULL;
		return NULL;
	}

	//<2F><>ȡ<EFBFBD><C8A1><EFBFBD><EFBFBD>
	ASSERT((m_wDataPos+sizeof(tagDataDescribe))<=m_wDataSize);
	memcpy(&DataDescribe,m_pcbBuffer+m_wDataPos,sizeof(tagDataDescribe));
	ASSERT((m_wDataPos+sizeof(tagDataDescribe)+DataDescribe.wDataSize)<=m_wDataSize);

	//Ч<><D0A7><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	if ((m_wDataPos+sizeof(tagDataDescribe)+DataDescribe.wDataSize)>m_wDataSize)
	{
		DataDescribe.wDataSize=0;
		DataDescribe.wDataDescribe=DTP_NULL;
		return NULL;
	}

	//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	void * pData=NULL;
	if (DataDescribe.wDataSize>0) pData=m_pcbBuffer+m_wDataPos+sizeof(tagDataDescribe);
	m_wDataPos+=sizeof(tagDataDescribe)+DataDescribe.wDataSize;

	return pData;
};

//////////////////////////////////////////////////////////////////////////////////

#pragma pack()

#endif