5fb66ae559
Change-Id: I78fa01a6c803dec782488490b730af3a11814d64 Reviewed-on: https://gerrit.libreoffice.org/61902 Tested-by: Jenkins Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>
306 lines
9.9 KiB
C++
306 lines
9.9 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#include <tools/datetime.hxx>
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#include <rtl/math.hxx>
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#include <sal/log.hxx>
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#include <systemdatetime.hxx>
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DateTime::DateTime(DateTimeInitSystem)
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: Date( Date::EMPTY )
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, Time( Time::EMPTY )
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{
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sal_Int32 nD = 0;
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sal_Int64 nT = 0;
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if ( GetSystemDateTime( &nD, &nT ) )
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{
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Date::operator=( Date( nD ) );
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SetTime( nT );
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}
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else
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Date::operator=( Date( 1, 1, 1900 ) ); // Time::nTime is already 0
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}
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DateTime::DateTime( const css::util::DateTime& rDateTime )
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: Date( rDateTime.Day, rDateTime.Month, rDateTime.Year ),
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Time( rDateTime.Hours, rDateTime.Minutes, rDateTime.Seconds, rDateTime.NanoSeconds )
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{
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}
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DateTime& DateTime::operator =( const css::util::DateTime& rUDateTime )
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{
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Date::operator=( Date( rUDateTime.Day, rUDateTime.Month, rUDateTime.Year));
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Time::operator=( Time( rUDateTime));
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return *this;
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}
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bool DateTime::IsBetween( const DateTime& rFrom, const DateTime& rTo ) const
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{
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return (*this >= rFrom) && (*this <= rTo);
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}
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bool DateTime::operator >( const DateTime& rDateTime ) const
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{
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return (Date::operator>( rDateTime )) ||
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(Date::operator==( rDateTime ) && tools::Time::operator>( rDateTime ));
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}
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bool DateTime::operator <( const DateTime& rDateTime ) const
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{
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return (Date::operator<( rDateTime )) ||
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(Date::operator==( rDateTime ) && tools::Time::operator<( rDateTime ));
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}
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bool DateTime::operator >=( const DateTime& rDateTime ) const
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{
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return (Date::operator>( rDateTime )) ||
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(Date::operator==( rDateTime ) && tools::Time::operator>=( rDateTime ));
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}
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bool DateTime::operator <=( const DateTime& rDateTime ) const
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{
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return (Date::operator<( rDateTime )) ||
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(Date::operator==( rDateTime ) && tools::Time::operator<=( rDateTime ));
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}
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sal_Int64 DateTime::GetSecFromDateTime( const Date& rDate ) const
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{
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if ( Date::operator<( rDate ) )
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return 0;
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else
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{
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sal_Int64 nSec = Date( *this ) - rDate;
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nSec *= 24UL*60*60;
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sal_Int64 nHour = GetHour();
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sal_Int64 nMin = GetMin();
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nSec += (nHour*3600)+(nMin*60)+GetSec();
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return nSec;
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}
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}
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DateTime& DateTime::operator +=( const tools::Time& rTime )
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{
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tools::Time aTime = *this;
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aTime += rTime;
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sal_uInt16 nHours = aTime.GetHour();
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if ( aTime.GetTime() > 0 )
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{
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while ( nHours >= 24 )
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{
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Date::operator++();
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nHours -= 24;
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}
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aTime.SetHour( nHours );
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}
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else if ( aTime.GetTime() != 0 )
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{
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while ( nHours >= 24 )
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{
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Date::operator--();
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nHours -= 24;
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}
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Date::operator--();
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aTime = Time( 24, 0, 0 )+aTime;
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}
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tools::Time::operator=( aTime );
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return *this;
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}
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DateTime& DateTime::operator -=( const tools::Time& rTime )
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{
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tools::Time aTime = *this;
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aTime -= rTime;
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sal_uInt16 nHours = aTime.GetHour();
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if ( aTime.GetTime() > 0 )
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{
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while ( nHours >= 24 )
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{
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Date::operator++();
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nHours -= 24;
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}
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aTime.SetHour( nHours );
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}
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else if ( aTime.GetTime() != 0 )
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{
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while ( nHours >= 24 )
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{
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Date::operator--();
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nHours -= 24;
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}
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Date::operator--();
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aTime = Time( 24, 0, 0 )+aTime;
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}
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tools::Time::operator=( aTime );
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return *this;
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}
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DateTime operator +( const DateTime& rDateTime, sal_Int32 nDays )
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{
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DateTime aDateTime( rDateTime );
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aDateTime.AddDays( nDays );
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return aDateTime;
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}
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DateTime operator -( const DateTime& rDateTime, sal_Int32 nDays )
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{
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DateTime aDateTime( rDateTime );
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aDateTime.AddDays( -nDays );
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return aDateTime;
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}
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DateTime operator +( const DateTime& rDateTime, const tools::Time& rTime )
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{
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DateTime aDateTime( rDateTime );
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aDateTime += rTime;
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return aDateTime;
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}
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DateTime operator -( const DateTime& rDateTime, const tools::Time& rTime )
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{
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DateTime aDateTime( rDateTime );
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aDateTime -= rTime;
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return aDateTime;
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}
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void DateTime::AddTime( double fTimeInDays )
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{
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double fInt, fFrac;
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if ( fTimeInDays < 0.0 )
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{
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fInt = ::rtl::math::approxCeil( fTimeInDays );
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fFrac = fInt <= fTimeInDays ? 0.0 : fTimeInDays - fInt;
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}
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else
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{
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fInt = ::rtl::math::approxFloor( fTimeInDays );
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fFrac = fInt >= fTimeInDays ? 0.0 : fTimeInDays - fInt;
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}
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AddDays( sal_Int32(fInt) ); // full days
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if ( fFrac )
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{
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tools::Time aTime(0); // default ctor calls system time, we don't need that
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fFrac *= ::tools::Time::nanoSecPerDay; // time expressed in nanoseconds
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aTime.MakeTimeFromNS( static_cast<sal_Int64>(fFrac) ); // method handles negative ns
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operator+=( aTime );
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}
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}
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DateTime operator +( const DateTime& rDateTime, double fTimeInDays )
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{
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DateTime aDateTime( rDateTime );
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aDateTime.AddTime( fTimeInDays );
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return aDateTime;
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}
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double operator -( const DateTime& rDateTime1, const DateTime& rDateTime2 )
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{
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sal_Int32 nDays = static_cast<const Date&>(rDateTime1)
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- static_cast<const Date&>(rDateTime2);
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sal_Int64 nTime = rDateTime1.GetNSFromTime() - rDateTime2.GetNSFromTime();
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if ( nTime )
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{
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double fTime = double(nTime);
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fTime /= ::tools::Time::nanoSecPerDay; // convert from nanoseconds to fraction
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if ( nDays < 0 && fTime > 0.0 )
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fTime = 1.0 - fTime;
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return double(nDays) + fTime;
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}
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return double(nDays);
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}
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void DateTime::GetWin32FileDateTime( sal_uInt32 & rLower, sal_uInt32 & rUpper ) const
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{
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const sal_Int64 a100nPerSecond = SAL_CONST_INT64( 10000000 );
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const sal_Int64 a100nPerDay = a100nPerSecond * sal_Int64( 60 * 60 * 24 );
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// FILETIME is indirectly documented as uint64, see
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// https://msdn.microsoft.com/en-us/library/windows/desktop/ms724284.aspx
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// mentioning the ULARGE_INTEGER structure.
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// https://msdn.microsoft.com/en-us/library/windows/desktop/ms724280.aspx
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// mentions that if FILETIME is not less than 0x8000000000000000 then the
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// FileTimeToSystemTime function fails, which is another indicator.
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// Unless there's evidence that FILETIME can represent a signed offset from
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// 1601-01-01 truncate at 0. (reading part below in
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// CreateFromWin32FileDateTime() would had to be adapted to signed as
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// well).
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sal_Int16 nYear = GetYear();
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SAL_WARN_IF( nYear < 1601, "tools.datetime", "DateTime::GetWin32FileDateTime - year < 1601: " << nYear);
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sal_Int64 aTime = (nYear < 1601 ? 0 : (
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a100nPerDay * (*this - Date(1,1,1601)) +
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GetNSFromTime()/100));
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rLower = sal_uInt32( aTime % SAL_CONST_UINT64( 0x100000000 ) );
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rUpper = sal_uInt32( aTime / SAL_CONST_UINT64( 0x100000000 ) );
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}
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DateTime DateTime::CreateFromWin32FileDateTime( sal_uInt32 rLower, sal_uInt32 rUpper )
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{
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// (rUpper|rLower) = 100-nanosecond intervals since 1601-01-01 00:00
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const sal_uInt64 a100nPerSecond = SAL_CONST_UINT64( 10000000 );
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const sal_uInt64 a100nPerDay = a100nPerSecond * sal_uInt64( 60 * 60 * 24 );
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sal_uInt64 aTime =
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sal_uInt64( rUpper ) * SAL_CONST_UINT64( 0x100000000 ) +
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sal_uInt64( rLower );
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SAL_WARN_IF( static_cast<sal_Int64>(aTime) < 0, "tools.datetime",
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"DateTime::CreateFromWin32FileDateTime - absurdly high value expected?");
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sal_uInt64 nDays = aTime / a100nPerDay;
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Date aDate(1,1,1601);
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// (0xffffffffffffffff / a100nPerDay = 21350398) fits into sal_Int32
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// (0x7fffffff = 2147483647)
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aDate.AddDays(nDays);
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SAL_WARN_IF( aDate - Date(1,1,1601) != static_cast<sal_Int32>(nDays), "tools.datetime",
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"DateTime::CreateFromWin32FileDateTime - date truncated to max");
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sal_uInt64 nNanos = (aTime - (nDays * a100nPerDay)) * 100;
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return DateTime( aDate, tools::Time(
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static_cast<sal_uInt32>((nNanos / tools::Time::nanoSecPerHour) % sal_uInt64( 24 )),
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static_cast<sal_uInt32>((nNanos / tools::Time::nanoSecPerMinute) % sal_uInt64( 60 )),
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static_cast<sal_uInt32>((nNanos / tools::Time::nanoSecPerSec) % sal_uInt64( 60 )),
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static_cast<sal_uInt64>( nNanos % tools::Time::nanoSecPerSec)));
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}
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DateTime DateTime::CreateFromUnixTime(const double fSecondsSinceEpoch)
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{
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double fValue = fSecondsSinceEpoch / Time::secondPerDay;
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const sal_Int32 nDays = static_cast <sal_Int32>(::rtl::math::approxFloor(fValue));
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Date aDate (1, 1, 1970);
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aDate.AddDays(nDays);
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SAL_WARN_IF(aDate - Date(1, 1, 1970) != nDays, "tools.datetime",
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"DateTime::CreateFromUnixTime - date truncated to max");
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fValue -= nDays;
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const sal_uInt64 nNanos = fValue * tools::Time::nanoSecPerDay;
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return DateTime( aDate, tools::Time(
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static_cast<sal_uInt32>((nNanos / tools::Time::nanoSecPerHour) % sal_uInt64( 24 )),
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static_cast<sal_uInt32>((nNanos / tools::Time::nanoSecPerMinute) % sal_uInt64( 60 )),
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static_cast<sal_uInt32>((nNanos / tools::Time::nanoSecPerSec) % sal_uInt64( 60 )),
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static_cast<sal_uInt64>( nNanos % tools::Time::nanoSecPerSec)));
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}
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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