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+/* -*- 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 <sal/config.h>
+
+#include <algorithm>
+
+#if defined(_WIN32)
+#if !defined WIN32_LEAN_AND_MEAN
+# define WIN32_LEAN_AND_MEAN
+#endif
+#include <windows.h>
+#include <mmsystem.h>
+#elif defined UNX
+#include <sys/time.h>
+#include <unistd.h>
+#endif
+
+#include <time.h>
+#ifdef __MACH__
+#include <mach/clock.h>
+#include <mach/mach.h>
+#include <mach/mach_time.h>
+#endif
+
+#include <rtl/math.hxx>
+#include <tools/time.hxx>
+#include <com/sun/star/util/DateTime.hpp>
+
+#include <systemdatetime.hxx>
+
+#if defined(__sun) && defined(__GNUC__)
+extern long altzone;
+#endif
+
+namespace {
+
+ const sal_Int64 nanoSecInSec = 1000000000;
+ const sal_Int16 secInMin = 60;
+ const sal_Int16 minInHour = 60;
+
+ sal_Int64 TimeToNanoSec( const tools::Time& rTime )
+ {
+ short nSign = (rTime.GetTime() >= 0) ? +1 : -1;
+ sal_Int32 nHour = rTime.GetHour();
+ sal_Int32 nMin = rTime.GetMin();
+ sal_Int32 nSec = rTime.GetSec();
+ sal_Int32 nNanoSec = rTime.GetNanoSec();
+
+ sal_Int64 nRet = nNanoSec;
+ nRet += nSec * nanoSecInSec;
+ nRet += nMin * secInMin * nanoSecInSec;
+ nRet += nHour * minInHour * secInMin * nanoSecInSec;
+
+ return (nRet * nSign);
+ }
+
+ tools::Time NanoSecToTime( sal_Int64 nNanoSec )
+ {
+ short nSign;
+ if ( nNanoSec < 0 )
+ {
+ nNanoSec *= -1;
+ nSign = -1;
+ }
+ else
+ nSign = 1;
+
+ tools::Time aTime( 0, 0, 0, nNanoSec );
+ aTime.SetTime( aTime.GetTime() * nSign );
+ return aTime;
+ }
+
+} // anonymous namespace
+
+namespace tools {
+
+Time::Time( TimeInitSystem )
+{
+ if ( !GetSystemDateTime( nullptr, &nTime ) )
+ nTime = 0;
+}
+
+Time::Time( const tools::Time& rTime )
+{
+ nTime = rTime.nTime;
+}
+
+Time::Time( sal_uInt32 nHour, sal_uInt32 nMin, sal_uInt32 nSec, sal_uInt64 nNanoSec )
+{
+ init(nHour, nMin, nSec, nNanoSec);
+}
+Time::Time( const css::util::Time &_rTime )
+{
+ init(_rTime.Hours, _rTime.Minutes, _rTime.Seconds, _rTime.NanoSeconds);
+}
+Time::Time( const css::util::DateTime &_rDateTime )
+{
+ init(_rDateTime.Hours, _rDateTime.Minutes, _rDateTime.Seconds, _rDateTime.NanoSeconds);
+}
+
+void tools::Time::init( sal_uInt32 nHour, sal_uInt32 nMin, sal_uInt32 nSec, sal_uInt64 nNanoSec )
+{
+ // normalize time
+ nSec += nNanoSec / nanoSecInSec;
+ nNanoSec %= nanoSecInSec;
+ nMin += nSec / secInMin;
+ nSec %= secInMin;
+ nHour += nMin / minInHour;
+ nMin %= minInHour;
+
+ // construct time
+ nTime = nNanoSec +
+ nSec * SEC_MASK +
+ nMin * MIN_MASK +
+ nHour * HOUR_MASK;
+}
+
+void tools::Time::SetHour( sal_uInt16 nNewHour )
+{
+ short nSign = (nTime >= 0) ? +1 : -1;
+ sal_Int32 nMin = GetMin();
+ sal_Int32 nSec = GetSec();
+ sal_Int32 nNanoSec = GetNanoSec();
+
+ nTime = nSign *
+ ( nNanoSec +
+ nSec * SEC_MASK +
+ nMin * MIN_MASK +
+ nNewHour * HOUR_MASK );
+}
+
+void tools::Time::SetMin( sal_uInt16 nNewMin )
+{
+ short nSign = (nTime >= 0) ? +1 : -1;
+ sal_Int32 nHour = GetHour();
+ sal_Int32 nSec = GetSec();
+ sal_Int32 nNanoSec = GetNanoSec();
+
+ // no overflow
+ nNewMin = nNewMin % minInHour;
+
+ nTime = nSign *
+ ( nNanoSec +
+ nSec * SEC_MASK +
+ nNewMin * MIN_MASK +
+ nHour * HOUR_MASK );
+}
+
+void tools::Time::SetSec( sal_uInt16 nNewSec )
+{
+ short nSign = (nTime >= 0) ? +1 : -1;
+ sal_Int32 nHour = GetHour();
+ sal_Int32 nMin = GetMin();
+ sal_Int32 nNanoSec = GetNanoSec();
+
+ // no overflow
+ nNewSec = nNewSec % secInMin;
+
+ nTime = nSign *
+ ( nNanoSec +
+ nNewSec * SEC_MASK +
+ nMin * MIN_MASK +
+ nHour * HOUR_MASK );
+}
+
+void tools::Time::SetNanoSec( sal_uInt32 nNewNanoSec )
+{
+ short nSign = (nTime >= 0) ? +1 : -1;
+ sal_Int32 nHour = GetHour();
+ sal_Int32 nMin = GetMin();
+ sal_Int32 nSec = GetSec();
+
+ // no overflow
+ nNewNanoSec = nNewNanoSec % nanoSecInSec;
+
+ nTime = nSign *
+ ( nNewNanoSec +
+ nSec * SEC_MASK +
+ nMin * MIN_MASK +
+ nHour * HOUR_MASK );
+}
+
+sal_Int64 tools::Time::GetNSFromTime() const
+{
+ short nSign = (nTime >= 0) ? +1 : -1;
+ sal_Int32 nHour = GetHour();
+ sal_Int32 nMin = GetMin();
+ sal_Int32 nSec = GetSec();
+ sal_Int32 nNanoSec = GetNanoSec();
+
+ return nSign *
+ ( nNanoSec +
+ nSec * nanoSecInSec +
+ nMin * (secInMin * nanoSecInSec) +
+ nHour * (minInHour * secInMin * nanoSecInSec) );
+}
+
+void tools::Time::MakeTimeFromNS( sal_Int64 nNS )
+{
+ short nSign;
+ if ( nNS < 0 )
+ {
+ nNS *= -1;
+ nSign = -1;
+ }
+ else
+ nSign = 1;
+
+ // avoid overflow when sal_uIntPtr is 32 bits
+ tools::Time aTime( 0, 0, nNS/nanoSecInSec, nNS % nanoSecInSec );
+ SetTime( aTime.GetTime() * nSign );
+}
+
+sal_Int32 tools::Time::GetMSFromTime() const
+{
+ short nSign = (nTime >= 0) ? +1 : -1;
+ sal_Int32 nHour = GetHour();
+ sal_Int32 nMin = GetMin();
+ sal_Int32 nSec = GetSec();
+ sal_Int32 nNanoSec = GetNanoSec();
+
+ return nSign *
+ ( nNanoSec/1000000 +
+ nSec * 1000 +
+ nMin * 60000 +
+ nHour * 3600000 );
+}
+
+void tools::Time::MakeTimeFromMS( sal_Int32 nMS )
+{
+ short nSign;
+ if ( nMS < 0 )
+ {
+ nMS *= -1;
+ nSign = -1;
+ }
+ else
+ nSign = 1;
+
+ // avoid overflow when sal_uIntPtr is 32 bits
+ tools::Time aTime( 0, 0, nMS/1000, (nMS % 1000) * 1000000 );
+ SetTime( aTime.GetTime() * nSign );
+}
+
+double tools::Time::GetTimeInDays() const
+{
+ short nSign = (nTime >= 0) ? +1 : -1;
+ double nHour = GetHour();
+ double nMin = GetMin();
+ double nSec = GetSec();
+ double nNanoSec = GetNanoSec();
+
+ return (nHour + (nMin / 60) + (nSec / (minInHour * secInMin)) + (nNanoSec / (minInHour * secInMin * nanoSecInSec))) / 24 * nSign;
+}
+
+// static
+void tools::Time::GetClock( double fTimeInDays,
+ sal_uInt16& nHour, sal_uInt16& nMinute, sal_uInt16& nSecond,
+ double& fFractionOfSecond, int nFractionDecimals )
+{
+ const double fTime = fTimeInDays - rtl::math::approxFloor(fTimeInDays); // date part absent
+
+ // If 0 then full day (or no day), shortcut.
+ // If < 0 then approxFloor() effectively returned the ceiling (note this
+ // also holds for negative fTimeInDays values) because of a near identical
+ // value, shortcut this to a full day as well.
+ // If >= 1.0 (actually == 1.0) then fTimeInDays is a negative small value
+ // not significant for a representable time and approxFloor() returned -1,
+ // shortcut to 0:0:0, otherwise it would become 24:0:0.
+ if (fTime <= 0.0 || fTime >= 1.0)
+ {
+ nHour = nMinute = nSecond = 0;
+ fFractionOfSecond = 0.0;
+ return;
+ }
+
+ // In seconds, including milli and nano.
+ const double fRawSeconds = fTime * tools::Time::secondPerDay;
+
+ // Round to nanoseconds most, which is the highest resolution this could be
+ // influenced by, but if the original value included a date round to at
+ // most 14 significant digits (including adding 4 for *86400), otherwise we
+ // might end up with a fake precision of h:m:s.999999986 which in fact
+ // should had been h:m:s+1
+ // BUT, leave at least 2 decimals to round. Which shouldn't be a problem in
+ // practice because class Date can calculate only 8-digit days for it's
+ // sal_Int16 year range, which exactly leaves us with 14-4-8=2.
+ int nDec = 9;
+ const double fAbsTimeInDays = fabs( fTimeInDays);
+ if (fAbsTimeInDays >= 1.0)
+ {
+ const int nDig = static_cast<int>(ceil( log10( fAbsTimeInDays)));
+ nDec = std::clamp( 10 - nDig, 2, 9 );
+ }
+ double fSeconds = rtl::math::round( fRawSeconds, nDec);
+
+ // If this ended up as a full day the original value was very very close
+ // but not quite. Take that.
+ if (fSeconds >= tools::Time::secondPerDay)
+ fSeconds = fRawSeconds;
+
+ // Now do not round values (specifically not up), but truncate to the next
+ // magnitude, so 23:59:59.99 is still 23:59:59 and not 24:00:00 (or even
+ // 00:00:00 which Excel does).
+ nHour = fSeconds / tools::Time::secondPerHour;
+ fSeconds -= nHour * tools::Time::secondPerHour;
+ nMinute = fSeconds / tools::Time::secondPerMinute;
+ fSeconds -= nMinute * tools::Time::secondPerMinute;
+ nSecond = fSeconds;
+ fSeconds -= nSecond;
+
+ assert(fSeconds < 1.0); // or back to the drawing board...
+
+ if (nFractionDecimals > 0)
+ {
+ // Do not simply round the fraction, otherwise .999 would end up as .00
+ // again. Truncate instead if rounding would round up into an integer
+ // value.
+ fFractionOfSecond = rtl::math::round( fSeconds, nFractionDecimals);
+ if (fFractionOfSecond >= 1.0)
+ fFractionOfSecond = rtl::math::pow10Exp( std::trunc(
+ rtl::math::pow10Exp( fSeconds, nFractionDecimals)), -nFractionDecimals);
+ }
+ else
+ fFractionOfSecond = fSeconds;
+}
+
+Time& tools::Time::operator =( const tools::Time& rTime )
+{
+ nTime = rTime.nTime;
+ return *this;
+}
+
+Time& tools::Time::operator +=( const tools::Time& rTime )
+{
+ nTime = NanoSecToTime( TimeToNanoSec( *this ) +
+ TimeToNanoSec( rTime ) ).GetTime();
+ return *this;
+}
+
+Time& tools::Time::operator -=( const tools::Time& rTime )
+{
+ nTime = NanoSecToTime( TimeToNanoSec( *this ) -
+ TimeToNanoSec( rTime ) ).GetTime();
+ return *this;
+}
+
+Time operator +( const tools::Time& rTime1, const tools::Time& rTime2 )
+{
+ return NanoSecToTime( TimeToNanoSec( rTime1 ) +
+ TimeToNanoSec( rTime2 ) );
+}
+
+Time operator -( const tools::Time& rTime1, const tools::Time& rTime2 )
+{
+ return NanoSecToTime( TimeToNanoSec( rTime1 ) -
+ TimeToNanoSec( rTime2 ) );
+}
+
+bool tools::Time::IsEqualIgnoreNanoSec( const tools::Time& rTime ) const
+{
+ sal_Int32 n1 = (nTime < 0 ? -static_cast<sal_Int32>(GetNanoSec()) : GetNanoSec() );
+ sal_Int32 n2 = (rTime.nTime < 0 ? -static_cast<sal_Int32>(rTime.GetNanoSec()) : rTime.GetNanoSec() );
+ return (nTime - n1) == (rTime.nTime - n2);
+}
+
+Time tools::Time::GetUTCOffset()
+{
+#if defined(_WIN32)
+ TIME_ZONE_INFORMATION aTimeZone;
+ aTimeZone.Bias = 0;
+ DWORD nTimeZoneRet = GetTimeZoneInformation( &aTimeZone );
+ sal_Int32 nTempTime = aTimeZone.Bias;
+ if ( nTimeZoneRet == TIME_ZONE_ID_STANDARD )
+ nTempTime += aTimeZone.StandardBias;
+ else if ( nTimeZoneRet == TIME_ZONE_ID_DAYLIGHT )
+ nTempTime += aTimeZone.DaylightBias;
+ tools::Time aTime( 0, static_cast<sal_uInt16>(abs( nTempTime )) );
+ if ( nTempTime > 0 )
+ aTime = -aTime;
+ return aTime;
+#else
+ static sal_uInt64 nCacheTicks = 0;
+ static sal_Int32 nCacheSecOffset = -1;
+ sal_uInt64 nTicks = tools::Time::GetSystemTicks();
+ time_t nTime;
+ tm aTM;
+ short nTempTime;
+
+ // determine value again if needed
+ if ( (nCacheSecOffset == -1) ||
+ ((nTicks - nCacheTicks) > 360000) ||
+ ( nTicks < nCacheTicks ) // handle overflow
+ )
+ {
+ nTime = time( nullptr );
+ localtime_r( &nTime, &aTM );
+ sal_Int32 nLocalTime = mktime( &aTM );
+#if defined(__sun)
+ // Solaris gmtime_r() seems not to handle daylight saving time
+ // flags correctly
+ nUTC = nLocalTime + ( aTM.tm_isdst == 0 ? timezone : altzone );
+#elif defined( LINUX )
+ // Linux mktime() seems not to handle tm_isdst correctly
+ sal_Int32 nUTC = nLocalTime - aTM.tm_gmtoff;
+#else
+ gmtime_r( &nTime, &aTM );
+ sal_Int32 nUTC = mktime( &aTM );
+#endif
+ nCacheTicks = nTicks;
+ nCacheSecOffset = (nLocalTime-nUTC) / 60;
+ }
+
+ nTempTime = abs( nCacheSecOffset );
+ tools::Time aTime( 0, static_cast<sal_uInt16>(nTempTime) );
+ if ( nCacheSecOffset < 0 )
+ aTime = -aTime;
+ return aTime;
+#endif
+}
+
+sal_uInt64 tools::Time::GetSystemTicks()
+{
+ return tools::Time::GetMonotonicTicks() / 1000;
+}
+
+#ifdef _WIN32
+static LARGE_INTEGER initPerformanceFrequency()
+{
+ LARGE_INTEGER nTicksPerSecond = { 0, 0 };
+ if (!QueryPerformanceFrequency(&nTicksPerSecond))
+ nTicksPerSecond.QuadPart = 0;
+ return nTicksPerSecond;
+}
+#endif
+
+sal_uInt64 tools::Time::GetMonotonicTicks()
+{
+#ifdef _WIN32
+ static const LARGE_INTEGER nTicksPerSecond = initPerformanceFrequency();
+ if (nTicksPerSecond.QuadPart > 0)
+ {
+ LARGE_INTEGER nPerformanceCount;
+ QueryPerformanceCounter(&nPerformanceCount);
+ return static_cast<sal_uInt64>(
+ ( nPerformanceCount.QuadPart * 1000 * 1000 ) / nTicksPerSecond.QuadPart );
+ }
+ else
+ {
+ return static_cast<sal_uInt64>( timeGetTime() * 1000 );
+ }
+#else
+ sal_uInt64 nMicroSeconds;
+#ifdef __MACH__
+ static mach_timebase_info_data_t info = { 0, 0 };
+ if ( 0 == info.numer )
+ mach_timebase_info( &info );
+ nMicroSeconds = mach_absolute_time() * static_cast<double>(info.numer / info.denom) / 1000;
+#else
+#if defined(_POSIX_TIMERS)
+ struct timespec currentTime;
+ clock_gettime( CLOCK_MONOTONIC, &currentTime );
+ nMicroSeconds
+ = static_cast<sal_uInt64>(currentTime.tv_sec) * 1000 * 1000 + currentTime.tv_nsec / 1000;
+#else
+ struct timeval currentTime;
+ gettimeofday( &currentTime, nullptr );
+ nMicroSeconds = static_cast<sal_uInt64>(currentTime.tv_sec) * 1000 * 1000 + currentTime.tv_usec;
+#endif
+#endif // __MACH__
+ return nMicroSeconds;
+#endif // _WIN32
+}
+
+} /* namespace tools */
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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