indata1.h

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// InData1.h: interface for the InData class.
//
//////////////////////////////////////////////////////////////////////

#if !defined(AFX_INDATA1_H__B9EA20A8_035D_4353_AE2B_9B59C6CBE32F__INCLUDED_)
#define AFX_INDATA1_H__B9EA20A8_035D_4353_AE2B_9B59C6CBE32F__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000

#define			DATA_SIZE		4096


#include <memory.h>
typedef	unsigned long uint32;

struct HEAD_INFO
{
	uint32	a;
	char	ch[1024];
	HEAD_INFO()
	{
		a = 0;
		memset(ch,'\0',sizeof(ch));
	};
};

class InData  
{
public:
	char* GetData(int& nLen);
	InData();
	virtual ~InData();
	
	InData &operator <<(unsigned int a)
	{
		if (cursor <= data + DATA_SIZE - sizeof(a)) 
		{
			*(unsigned int *) cursor = a;
			cursor += sizeof(a);
		}
		return *this;
	};
	InData &operator <<(unsigned long a)
	{
		if (cursor <= data + DATA_SIZE - sizeof(a)) 
		{
			*(unsigned long *) cursor = a;
			cursor += sizeof(a);
		}
		return *this;
	};

	InData &operator <<(char c)
	{
		if (cursor <= data + DATA_SIZE - sizeof(c)) 
		{
			*(char*)cursor = c;
			cursor += sizeof(c);
		}
		return *this;
	};

	InData &operator <<(HEAD_INFO& p)
	{
		unsigned int uiLenght = p.a + 1;

		if (cursor + uiLenght <= data + DATA_SIZE - sizeof(uiLenght)) 
		{
			*this << uiLenght;
			memcpy(cursor, p.ch, uiLenght);
			cursor += uiLenght;
		}
		return *this;
	};
	unsigned int GetLength();
protected:
	char data[DATA_SIZE];
	char* cursor;
private:
	
	void ResetData();
};

#endif // !defined(AFX_INDATA1_H__B9EA20A8_035D_4353_AE2B_9B59C6CBE32F__INCLUDED_)