tools/source/datetime/systemdatetime.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19 #if defined(_WIN32)
  20 #if !defined WIN32_LEAN_AND_MEAN
  21 #define WIN32_LEAN_AND_MEAN
  22 #endif
  23 #include <windows.h>
  24 #elif defined UNX
  25 #include <sys/time.h>
  26 #endif
  27
  28 #include <time.h>
  29 #ifdef __MACH__
  30 #include <mach/clock.h>
  31 #include <mach/mach.h>
  32 #include <mach/mach_time.h>
  33 #endif
  34
  35 #include <osl/diagnose.h>
  36 #include <systemdatetime.hxx>
  37
  38 namespace
  39 {
  40 constexpr sal_Int32 ConvertYMDToInt(sal_Int32 nYear, sal_Int32 nMonth, sal_Int32 nDay)
  41 {
  42     return (nYear * 10000) + (nMonth * 100) + nDay;
  43 }
  44
  45 constexpr sal_Int64 ConvertHMSnToInt(sal_Int64 nHour, sal_Int64 nMin, sal_Int64 nSec,
  46                                      sal_Int64 nNanoSec)
  47 {
  48     return (nHour * HOUR_MASK) + (nMin * MIN_MASK) + (nSec * SEC_MASK) + nNanoSec;
  49 }
  50 }
  51
  52 bool GetSystemDateTime(sal_Int32* pDate, sal_Int64* pTime)
  53 {
  54 #if defined(_WIN32)
  55     SYSTEMTIME aDateTime;
  56     GetLocalTime(&aDateTime);
  57
  58     if (pDate)
  59         *pDate = ConvertYMDToInt(static_cast<sal_Int32>(aDateTime.wYear),
  60                                  static_cast<sal_Int32>(aDateTime.wMonth),
  61                                  static_cast<sal_Int32>(aDateTime.wDay));
  62     if (pTime)
  63         *pTime = ConvertHMSnToInt(aDateTime.wHour, aDateTime.wMinute, aDateTime.wSecond,
  64                                   aDateTime.wMilliseconds * 1000000);
  65
  66     return true;
  67 #else
  68     struct timespec tsTime;
  69 #if defined(__MACH__)
  70     // macOS does not have clock_gettime, use clock_get_time
  71     clock_serv_t cclock;
  72     mach_timespec_t mts;
  73     host_get_clock_service(mach_host_self(), CALENDAR_CLOCK, &cclock);
  74     clock_get_time(cclock, &mts);
  75     mach_port_deallocate(mach_task_self(), cclock);
  76     tsTime.tv_sec = mts.tv_sec;
  77     tsTime.tv_nsec = mts.tv_nsec;
  78 #else
  79     // CLOCK_REALTIME should be supported
  80     // on any modern Unix, but be extra cautious
  81     if (clock_gettime(CLOCK_REALTIME, &tsTime) != 0)
  82     {
  83         struct timeval tvTime;
  84         OSL_VERIFY(gettimeofday(&tvTime, nullptr) != 0);
  85         tsTime.tv_sec = tvTime.tv_sec;
  86         tsTime.tv_nsec = tvTime.tv_usec * 1000;
  87     }
  88 #endif
  89
  90     struct tm aTime;
  91     time_t nTmpTime = tsTime.tv_sec;
  92     if (localtime_r(&nTmpTime, &aTime))
  93     {
  94         if (pDate)
  95             *pDate = ConvertYMDToInt(static_cast<sal_Int32>(aTime.tm_year + 1900),
  96                                      static_cast<sal_Int32>(aTime.tm_mon + 1),
  97                                      static_cast<sal_Int32>(aTime.tm_mday));
  98         if (pTime)
  99             *pTime = ConvertHMSnToInt(aTime.tm_hour, aTime.tm_min, aTime.tm_sec, tsTime.tv_nsec);
 100         return true;
 101     }
 102
 103     return false;
 104 #endif
 105 }
 106
 107 /* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */