/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */

/*

 * This file is part of the LibreOffice project.

 *

 * This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/.

 */

#include <tools/datetimeutils.hxx>

#include <tools/datetime.hxx>

#include <rtl/strbuf.hxx>

#include <rtl/ustrbuf.hxx>

/// Append the number as 2-digit when less than 10.

template<class TStringBuffer>

static void lcl_AppendTwoDigits( TStringBuffer &rBuffer, sal_Int32 nNum )

{

    if ( nNum < 0 || nNum > 99 )

    {

        rBuffer.append( "00" );

        return;

    }

    if ( nNum < 10 )

        rBuffer.append( '0' );

    rBuffer.append( nNum );

}

Unexecuted instantiation: datetimeutils.cxx:void lcl_AppendTwoDigits<rtl::OStringBuffer>(rtl::OStringBuffer&, int)

datetimeutils.cxx:void lcl_AppendTwoDigits<rtl::OUStringBuffer>(rtl::OUStringBuffer&, int)

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{

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    if ( nNum < 0 || nNum > 99 )

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    {

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        rBuffer.append( "00" );

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        return;

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    }

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    if ( nNum < 10 )

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        rBuffer.append( '0' );

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    rBuffer.append( nNum );

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}

template<class TString, class TStringBuffer>

static TString DateTimeToStringImpl( const DateTime& rDateTime )

{

    const DateTime& aInUTC( rDateTime );

// HACK: this is correct according to the spec, but MSOffice believes everybody lives

// in UTC+0 when reading it back

//    aInUTC.ConvertToUTC();

    TStringBuffer aBuffer( 25 );

    aBuffer.append( sal_Int32( aInUTC.GetYear() ) );

    aBuffer.append( '-' );

    lcl_AppendTwoDigits( aBuffer, aInUTC.GetMonth() );

    aBuffer.append( '-' );

    lcl_AppendTwoDigits( aBuffer, aInUTC.GetDay() );

    aBuffer.append( 'T' );

    lcl_AppendTwoDigits( aBuffer, aInUTC.GetHour() );

    aBuffer.append( ':' );

    lcl_AppendTwoDigits( aBuffer, aInUTC.GetMin() );

    aBuffer.append( ':' );

    lcl_AppendTwoDigits( aBuffer, aInUTC.GetSec() );

    aBuffer.append( 'Z' ); // we are in UTC

    return aBuffer.makeStringAndClear();

}

Unexecuted instantiation: datetimeutils.cxx:rtl::OString DateTimeToStringImpl<rtl::OString, rtl::OStringBuffer>(DateTime const&)

datetimeutils.cxx:rtl::OUString DateTimeToStringImpl<rtl::OUString, rtl::OUStringBuffer>(DateTime const&)

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{

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    const DateTime& aInUTC( rDateTime );

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// HACK: this is correct according to the spec, but MSOffice believes everybody lives

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// in UTC+0 when reading it back

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//    aInUTC.ConvertToUTC();

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    TStringBuffer aBuffer( 25 );

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    aBuffer.append( sal_Int32( aInUTC.GetYear() ) );

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    aBuffer.append( '-' );

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    lcl_AppendTwoDigits( aBuffer, aInUTC.GetMonth() );

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    aBuffer.append( '-' );

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    lcl_AppendTwoDigits( aBuffer, aInUTC.GetDay() );

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    aBuffer.append( 'T' );

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    lcl_AppendTwoDigits( aBuffer, aInUTC.GetHour() );

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    aBuffer.append( ':' );

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    lcl_AppendTwoDigits( aBuffer, aInUTC.GetMin() );

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    aBuffer.append( ':' );

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    lcl_AppendTwoDigits( aBuffer, aInUTC.GetSec() );

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    aBuffer.append( 'Z' ); // we are in UTC

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    return aBuffer.makeStringAndClear();

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}

OString DateTimeToOString( const DateTime& rDateTime )

{

    return DateTimeToStringImpl<OString,OStringBuffer>(rDateTime);

}

OUString DateTimeToOUString( const DateTime& rDateTime )

{

    return DateTimeToStringImpl<OUString,OUStringBuffer>(rDateTime);

}

OString DateToOString( const Date& rDate )

{

    tools::Time aTime( tools::Time::EMPTY );

    return DateTimeToOString( DateTime( rDate, aTime ) );

}

OUString DateToDDMMYYYYOUString( const Date& rDate )

{

    OUStringBuffer aBuffer( 25 );

    lcl_AppendTwoDigits( aBuffer, rDate.GetDay() );

    aBuffer.append( '/' );

    lcl_AppendTwoDigits( aBuffer, rDate.GetMonth() );

    aBuffer.append( '/' );

    aBuffer.append( sal_Int32( rDate.GetYear() ) );

    return aBuffer.makeStringAndClear();

}

std::ostream& operator<<(std::ostream& os, const Date& rDate)

{

    os << rDate.GetYear() << "-" << rDate.GetMonth() << "-" << rDate.GetDay();

    return os;

}