// timerecord.h
// Time Recording Class
// Copyright (C) 2000 Yukinori NAGATANI
// Yukawa Institute for Themoretical Physics, Kyoto University
// nagatani@yukawa.kyoto-u.ac.jp

#ifdef TIME_RECORD
#else

#define	TIME_RECORD
#include <time.h>
#include <iostream.h>

class TimeRecord {
private:
	char	szTimeString [256];
	time_t	tNow,	tOld,	tStart;
public:
	TimeRecord (void) {
		tNow = 0;
		tOld = 0;
		tStart = 0;
	}
	TimeRecord & record (void) {
		tOld = tNow;
		time (&tNow);
		if (tStart == 0)
			tStart = tNow;
	}
	char * getTimeString (void)
	{
		if (tNow == 0)
			return	NULL;
		strftime (szTimeString, 255,
			  "%Y/%m/%d %a %H:%M:%S", localtime (&tNow));
		return	szTimeString;
	}
	int getDeltaSecond (void) const
	{
		return	(tOld == 0 ? 0 : tNow - tOld);
	}
	int getTotalSecond (void) const
	{
		return	(tStart == 0 ? 0 : tNow - tStart);
	}
	friend ostream & operator << (ostream & s, TimeRecord & TR)
	{
		TR.record ();
		s << TR.getTimeString()
		  << " (" << TR.getDeltaSecond ()
		  << ", " << TR.getTotalSecond () << ")";
		return	s;
	}
};
#endif // TIME_RECORD