//  TGmt.cp - G M Time class object

// 

// Apple Macintosh Developer Technical Support

// Written by:  Vinne Moscaritolo

//

//  Copyright (work in progress)  Apple Computer, Inc All rights reserved.

//

// You may incorporate this sample code into your applications without

// restriction, though the sample code has been provided "AS IS" and the

// responsibility for its operation is 100% yours.  However, what you are

// not permitted to do is to redistribute the source as "DSC Sample Code"

// after having made changes. If you're going to re-distribute the source,

// we require that you make it clear in the source that the code was

// descended from Apple Sample Code, but that you've made changes.

// 

#include "TGMT.h"

#include <iomanip.h>

#include <OSUtils.h>

void TGmt::Now()

{

    GetDateTime(&fTime);

};

unsigned long  TGmt::Elapsed()

{

    unsigned long   now;

    GetDateTime(&now);

    return (now - fTime);

};

ostream &operator<< (ostream& s, const TGmt& t)

{

    const char* wkday[]= {"XXX","Sun","Mon","Tue","Wed","Thu","Fri","Sat"};

    const char* month[] = {"XXX","Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"};

    DateTimeRec d;

    MachineLocation loc;

    long        delta;

    long        savedflags;

// normalize for GMT

    ReadLocation(&loc);

    delta = 0x00FFFFFF & loc.u.gmtDelta;

    if(delta & 0x00800000) delta |= 0xff000000;

// Convert to Stream

    SecondsToDate(t.fTime - delta ,&d);

    savedflags = s.setf(ios::right, ios::adjustfield);

    s << setfill('0');

    s << wkday[ d.dayOfWeek ] << ", " << setw(2) <<  d.day << " " << month[d.month]  << " " << setw(4) << d.year << " ";

    s << setw(2) << d.hour << ":" << setw(2) << d.minute << ":" << setw(2) << d.second <<" GMT";

    s.setf(savedflags);

    return s;

};