From 940b4d1848e8c70ab7642901a68594e8016caffc Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sat, 27 Apr 2024 18:51:28 +0200 Subject: Adding upstream version 1:7.0.4. Signed-off-by: Daniel Baumann --- tools/source/datetime/datetime.cxx | 306 +++++++++++++++++++++++++++++++++++++ 1 file changed, 306 insertions(+) create mode 100644 tools/source/datetime/datetime.cxx (limited to 'tools/source/datetime/datetime.cxx') diff --git a/tools/source/datetime/datetime.cxx b/tools/source/datetime/datetime.cxx new file mode 100644 index 000000000..00790ff78 --- /dev/null +++ b/tools/source/datetime/datetime.cxx @@ -0,0 +1,306 @@ +/* -*- 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/. + * + * This file incorporates work covered by the following license notice: + * + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed + * with this work for additional information regarding copyright + * ownership. The ASF licenses this file to you under the Apache + * License, Version 2.0 (the "License"); you may not use this file + * except in compliance with the License. You may obtain a copy of + * the License at http://www.apache.org/licenses/LICENSE-2.0 . + */ +#include +#include +#include + +#include + +DateTime::DateTime(DateTimeInitSystem) + : Date( Date::EMPTY ) + , Time( Time::EMPTY ) +{ + sal_Int32 nD = 0; + sal_Int64 nT = 0; + if ( GetSystemDateTime( &nD, &nT ) ) + { + Date::operator=( Date( nD ) ); + SetTime( nT ); + } + else + Date::operator=( Date( 1, 1, 1900 ) ); // Time::nTime is already 0 +} + +DateTime::DateTime( const css::util::DateTime& rDateTime ) + : Date( rDateTime.Day, rDateTime.Month, rDateTime.Year ), + Time( rDateTime.Hours, rDateTime.Minutes, rDateTime.Seconds, rDateTime.NanoSeconds ) +{ +} + +DateTime& DateTime::operator =( const css::util::DateTime& rUDateTime ) +{ + Date::operator=( Date( rUDateTime.Day, rUDateTime.Month, rUDateTime.Year)); + Time::operator=( Time( rUDateTime)); + return *this; +} + +bool DateTime::IsBetween( const DateTime& rFrom, const DateTime& rTo ) const +{ + return (*this >= rFrom) && (*this <= rTo); +} + +bool DateTime::operator >( const DateTime& rDateTime ) const +{ + return (Date::operator>( rDateTime )) || + (Date::operator==( rDateTime ) && tools::Time::operator>( rDateTime )); +} + +bool DateTime::operator <( const DateTime& rDateTime ) const +{ + return (Date::operator<( rDateTime )) || + (Date::operator==( rDateTime ) && tools::Time::operator<( rDateTime )); +} + +bool DateTime::operator >=( const DateTime& rDateTime ) const +{ + return (Date::operator>( rDateTime )) || + (Date::operator==( rDateTime ) && tools::Time::operator>=( rDateTime )); +} + +bool DateTime::operator <=( const DateTime& rDateTime ) const +{ + return (Date::operator<( rDateTime )) || + (Date::operator==( rDateTime ) && tools::Time::operator<=( rDateTime )); +} + +sal_Int64 DateTime::GetSecFromDateTime( const Date& rDate ) const +{ + if ( Date::operator<( rDate ) ) + return 0; + else + { + sal_Int64 nSec = Date( *this ) - rDate; + nSec *= 24UL*60*60; + sal_Int64 nHour = GetHour(); + sal_Int64 nMin = GetMin(); + nSec += (nHour*3600)+(nMin*60)+GetSec(); + return nSec; + } +} + +DateTime& DateTime::operator +=( const tools::Time& rTime ) +{ + tools::Time aTime = *this; + aTime += rTime; + sal_uInt16 nHours = aTime.GetHour(); + if ( aTime.GetTime() > 0 ) + { + while ( nHours >= 24 ) + { + Date::operator++(); + nHours -= 24; + } + aTime.SetHour( nHours ); + } + else if ( aTime.GetTime() != 0 ) + { + while ( nHours >= 24 ) + { + Date::operator--(); + nHours -= 24; + } + Date::operator--(); + aTime = Time( 24, 0, 0 )+aTime; + } + tools::Time::operator=( aTime ); + + return *this; +} + +DateTime& DateTime::operator -=( const tools::Time& rTime ) +{ + tools::Time aTime = *this; + aTime -= rTime; + sal_uInt16 nHours = aTime.GetHour(); + if ( aTime.GetTime() > 0 ) + { + while ( nHours >= 24 ) + { + Date::operator++(); + nHours -= 24; + } + aTime.SetHour( nHours ); + } + else if ( aTime.GetTime() != 0 ) + { + while ( nHours >= 24 ) + { + Date::operator--(); + nHours -= 24; + } + Date::operator--(); + aTime = Time( 24, 0, 0 )+aTime; + } + tools::Time::operator=( aTime ); + + return *this; +} + +DateTime operator +( const DateTime& rDateTime, sal_Int32 nDays ) +{ + DateTime aDateTime( rDateTime ); + aDateTime.AddDays( nDays ); + return aDateTime; +} + +DateTime operator -( const DateTime& rDateTime, sal_Int32 nDays ) +{ + DateTime aDateTime( rDateTime ); + aDateTime.AddDays( -nDays ); + return aDateTime; +} + +DateTime operator +( const DateTime& rDateTime, const tools::Time& rTime ) +{ + DateTime aDateTime( rDateTime ); + aDateTime += rTime; + return aDateTime; +} + +DateTime operator -( const DateTime& rDateTime, const tools::Time& rTime ) +{ + DateTime aDateTime( rDateTime ); + aDateTime -= rTime; + return aDateTime; +} + +void DateTime::AddTime( double fTimeInDays ) +{ + double fInt, fFrac; + if ( fTimeInDays < 0.0 ) + { + fInt = ::rtl::math::approxCeil( fTimeInDays ); + fFrac = fInt <= fTimeInDays ? 0.0 : fTimeInDays - fInt; + } + else + { + fInt = ::rtl::math::approxFloor( fTimeInDays ); + fFrac = fInt >= fTimeInDays ? 0.0 : fTimeInDays - fInt; + } + AddDays( sal_Int32(fInt) ); // full days + if ( fFrac ) + { + tools::Time aTime(0); // default ctor calls system time, we don't need that + fFrac *= ::tools::Time::nanoSecPerDay; // time expressed in nanoseconds + aTime.MakeTimeFromNS( static_cast(fFrac) ); // method handles negative ns + operator+=( aTime ); + } +} + +DateTime operator +( const DateTime& rDateTime, double fTimeInDays ) +{ + DateTime aDateTime( rDateTime ); + aDateTime.AddTime( fTimeInDays ); + return aDateTime; +} + +double operator -( const DateTime& rDateTime1, const DateTime& rDateTime2 ) +{ + sal_Int32 nDays = static_cast(rDateTime1) + - static_cast(rDateTime2); + sal_Int64 nTime = rDateTime1.GetNSFromTime() - rDateTime2.GetNSFromTime(); + if ( nTime ) + { + double fTime = double(nTime); + fTime /= ::tools::Time::nanoSecPerDay; // convert from nanoseconds to fraction + if ( nDays < 0 && fTime > 0.0 ) + fTime = 1.0 - fTime; + return double(nDays) + fTime; + } + return double(nDays); +} + +void DateTime::GetWin32FileDateTime( sal_uInt32 & rLower, sal_uInt32 & rUpper ) const +{ + const sal_Int64 a100nPerSecond = SAL_CONST_INT64( 10000000 ); + const sal_Int64 a100nPerDay = a100nPerSecond * sal_Int64( 60 * 60 * 24 ); + + // FILETIME is indirectly documented as uint64, see + // https://msdn.microsoft.com/en-us/library/windows/desktop/ms724284.aspx + // mentioning the ULARGE_INTEGER structure. + // https://msdn.microsoft.com/en-us/library/windows/desktop/ms724280.aspx + // mentions that if FILETIME is not less than 0x8000000000000000 then the + // FileTimeToSystemTime function fails, which is another indicator. + // Unless there's evidence that FILETIME can represent a signed offset from + // 1601-01-01 truncate at 0. (reading part below in + // CreateFromWin32FileDateTime() would had to be adapted to signed as + // well). + sal_Int16 nYear = GetYear(); + SAL_WARN_IF( nYear < 1601, "tools.datetime", "DateTime::GetWin32FileDateTime - year < 1601: " << nYear); + + sal_Int64 aTime = (nYear < 1601 ? 0 : ( + a100nPerDay * (*this - Date(1,1,1601)) + + GetNSFromTime()/100)); + + rLower = sal_uInt32( aTime % SAL_CONST_UINT64( 0x100000000 ) ); + rUpper = sal_uInt32( aTime / SAL_CONST_UINT64( 0x100000000 ) ); +} + +DateTime DateTime::CreateFromWin32FileDateTime( sal_uInt32 rLower, sal_uInt32 rUpper ) +{ + // (rUpper|rLower) = 100-nanosecond intervals since 1601-01-01 00:00 + const sal_uInt64 a100nPerSecond = SAL_CONST_UINT64( 10000000 ); + const sal_uInt64 a100nPerDay = a100nPerSecond * sal_uInt64( 60 * 60 * 24 ); + + sal_uInt64 aTime = + sal_uInt64( rUpper ) * SAL_CONST_UINT64( 0x100000000 ) + + sal_uInt64( rLower ); + + SAL_WARN_IF( static_cast(aTime) < 0, "tools.datetime", + "DateTime::CreateFromWin32FileDateTime - absurdly high value expected?"); + + sal_uInt64 nDays = aTime / a100nPerDay; + + Date aDate(1,1,1601); + // (0xffffffffffffffff / a100nPerDay = 21350398) fits into sal_Int32 + // (0x7fffffff = 2147483647) + aDate.AddDays(nDays); + + SAL_WARN_IF( aDate - Date(1,1,1601) != static_cast(nDays), "tools.datetime", + "DateTime::CreateFromWin32FileDateTime - date truncated to max"); + + sal_uInt64 nNanos = (aTime - (nDays * a100nPerDay)) * 100; + return DateTime( aDate, tools::Time( + static_cast((nNanos / tools::Time::nanoSecPerHour) % sal_uInt64( 24 )), + static_cast((nNanos / tools::Time::nanoSecPerMinute) % sal_uInt64( 60 )), + static_cast((nNanos / tools::Time::nanoSecPerSec) % sal_uInt64( 60 )), + static_cast( nNanos % tools::Time::nanoSecPerSec))); +} + +DateTime DateTime::CreateFromUnixTime(const double fSecondsSinceEpoch) +{ + double fValue = fSecondsSinceEpoch / Time::secondPerDay; + const sal_Int32 nDays = static_cast (::rtl::math::approxFloor(fValue)); + + Date aDate (1, 1, 1970); + aDate.AddDays(nDays); + SAL_WARN_IF(aDate - Date(1, 1, 1970) != nDays, "tools.datetime", + "DateTime::CreateFromUnixTime - date truncated to max"); + + fValue -= nDays; + + const sal_uInt64 nNanos = fValue * tools::Time::nanoSecPerDay; + return DateTime( aDate, tools::Time( + static_cast((nNanos / tools::Time::nanoSecPerHour) % sal_uInt64( 24 )), + static_cast((nNanos / tools::Time::nanoSecPerMinute) % sal_uInt64( 60 )), + static_cast((nNanos / tools::Time::nanoSecPerSec) % sal_uInt64( 60 )), + static_cast( nNanos % tools::Time::nanoSecPerSec))); +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ -- cgit v1.2.3