// Copyright (c) 1998-2009 Nokia Corporation and/or its subsidiary(-ies).

// All rights reserved.

// This component and the accompanying materials are made available

// under the terms of "Eclipse Public License v1.0"

// which accompanies this distribution, and is available

// at the URL "http://www.eclipse.org/legal/epl-v10.html".

//

// Initial Contributors:

// Nokia Corporation - initial contribution.

//

// Contributors:

//

// Description:

// TIME.CPP

// Mapping between EPOC32 time and libc time

// The basic philosophy is to work in time_t units (TInt) which

// will be essentially TTimeIntervalSeconds from the start of Unix time.

// To stay compliant with the C-Standard (with reference to C99 draft), we  

// set the meaning of time_t to be Universal time.

// 

//

#include <e32std.h>

#include <sys/time.h> // struct timeval, timezone

#define UNIX_BASE   TTime(MAKE_TINT64(0x00dcddb3,0x0f2f8000))    // 00:00, Jan 1st 1970

// external interface for the C library

extern "C" {

/*

Intended Usage:	The gettimeofday function obtains the current UTC time, which is 

				expressed as seconds and microseconds since 00:00:00 Coordinated Universal Time (UTC), 

				January 1, 1970, and stores it in a timeval structure.

				Please note that tz_minuteswest includes daytime saving. The struct member tz_dsttime is no 

				longer supported by Symbian OS and therefore set to Zero.

*/

EXPORT_C 

int gettimeofday (struct timeval *tp, struct timezone *tzp)

    {

    if (tp)

	{

	TTime t;

	t.UniversalTime();

	TTimeIntervalSeconds sec;

	TInt err = t.SecondsFrom(UNIX_BASE, sec);

	if (err)

	    return -1;

	else

	    tp->tv_sec = sec.Int();

	t -= sec;

	TTimeIntervalMicroSeconds usec = t.MicroSecondsFrom(UNIX_BASE);

	TInt64 hackyfix = usec.Int64();	// because GetTInt() isn't declared const

	tp->tv_usec = I64INT(hackyfix);

	}

    if (tzp)

	{

	    tzp->tz_minuteswest = (User::UTCOffset().Int())/60;

	    tzp->tz_dsttime = 0;

	}

    return 0;

    }

} // extern "C"