#ifndef	__PUB_BUF_H__
#define	__PUB_BUF_H__

#include <cstdlib>
#include <cstring>

#ifdef  _WINDOWS64
	#ifdef PUB_EXPORTS
		#define PUB_LIB_API __declspec(dllexport)
	#else
		#define PUB_LIB_API __declspec(dllimport)
		#pragma comment(lib,"libpub.lib")
	#endif
#else 
	#define PUB_LIB_API
#endif

class PUB_LIB_API CBuffer
{
public:
	CBuffer();
	~CBuffer();
	
	//
	// consumer interface
	//
	inline char* GetBufPtr() const { return m_BufPtr; }
	inline int   GetLength() const { return m_DataLen; }
	inline int   GetBuffer(char** buf_ptr, int& buf_size) const 
	{
		*buf_ptr = m_BufPtr;
		buf_size = m_DataLen;
		return 0;
	}
	
        char* Detach();
        static void Free(void* pointer);

	
	//
	// producer interface
	//
	int SetBuffer(const char* buf_ptr, const int buf_size);
	int SetLength(const int buf_size);
	int AppendBuf(const char* buf_ptr, const int buf_size);
	
	int Clear();
private:
	char* m_BufPtr;
	int   m_BufLen;
	int   m_DataLen;
	int   m_Detached;
};


#endif