time.cpp

标准C++编写的小小CRM软件,无任何平台依赖.采用标准XML作为数据库.只需重新纺译,可在任何平台上运行.目前测试过在GCC和VC下都可以编译通过

// Time.cpp: implementation of the Time class.
//
//////////////////////////////////////////////////////////////////////

#include "Time.h"

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

Time::Time():hour(0),minute(0),second(0)	
{	}

Time::Time( unsigned h,unsigned m,unsigned s )
{	setTime( h, m, s );						}

Time::Time( const Time& t )
{	setTime( t.hour,t.minute,t.second );	}

Time::Time( char* t )
{
	unsigned h=0,m=0,s=0;
	char ch;
	istrstream tStream(t);

	tStream>>h>>ch>>m>>ch>>s;
	setTime( h, m, s );
}

void Time::setTime( unsigned h,unsigned m,unsigned s ){
	if( h<25 && m<60 && s<60 )
	{	hour=h;		minute=m;	second=s;	}
	else{
		cerr<<"invalid time format"<<endl;
		hour=minute=second=0;				
	}
}

Time::~Time()
{}

bool Time::operator == (const Time& t)
/* If two date all the same then return true, else return false.*/
{	return hour==t.hour && minute==t.minute && second==t.second;	}

bool Time::operator > (const Time& t)
/* If the first time later than the follow, return true			*
 * else return false.											*/
{
	return hour>t.hour
		|| hour==t.hour && minute>t.minute
		|| minute==t.minute && second>t.second;
}

bool Time::operator < (const Time& t)
/* If the first time earlier than the follow , return true	*
 * else return false.											*/
{
	return hour<t.hour
		|| hour==t.hour && minute<t.minute
		|| minute==t.minute && second<t.second;
}

istream& operator>> ( istream& is,Time& t)
{
	unsigned hour=0,minute=0,second=0;
	char ch;
	
	is>>hour>>ch>>minute>>ch>>second;
	t.setTime( hour,minute,second );

	return is;
}

ostream& operator << ( ostream& os, Time& t)
{
	os<<t.hour<<':'<<t.minute<<':'<<t.second;
	return os;
}