//Embedded C++ Library
//Copyright (c) Hitachi,Ltd. 1997
//Licensed material of Hitachi,Ltd
//
//  Embeded C++ Library <mystrbuf>
//

//====================================================================
//  File:	mystrbuf
//  Purpose:	Definition of class mystrbuf
//  Create:     1997.09.20 Rev. 1.0
//====================================================================

#ifndef _MYSTRBUF_
#define _MYSTRBUF_

#ifdef  _EC2P_GPP
#define _bufbase	_base
#define _bufptr		_ptr
#define _bufcnt		_cnt
// #define _buflen	_bufsiz
#define _ioflag1	_flag
#endif

#include <streambuf>
struct	_f_type;
class mystrbuf : public streambuf {
public:
	mystrbuf(){_file_Ptr = 0;}
	mystrbuf(void *_fp){_Init((_f_type*)_fp);}
	virtual ~mystrbuf(){close();}
	void 	*myfptr() const{return _file_Ptr;} 
	mystrbuf	*open(const char *, int);
	mystrbuf	*close();
protected:
	virtual streambuf *setbuf(char *, streamsize);
	virtual pos_type seekoff(off_type, ios_base::seekdir,
        ios_base::openmode=(ios_base::openmode)(ios_base::in|ios_base::out));
	virtual pos_type seekpos(pos_type sp,
	ios_base::openmode=(ios_base::openmode)(ios_base::in|ios_base::out));
	virtual int sync();
	virtual int showmanyc(){return 0;}
	virtual int_type underflow();
	virtual int_type pbackfail(int_type=streambuf::eof);
	virtual int_type overflow(int_type=streambuf::eof);
private:
	void	_Init(_f_type *);
	_f_type	*_file_Ptr;
#ifdef	_EC2P_GPP
	long	_buflen_wk;
#endif
};
#endif