1 files changed, 107 insertions, 0 deletions
diff --git a/tools/source/datetime/systemdatetime.cxx b/tools/source/datetime/systemdatetime.cxx
new file mode 100644
index 000000000..2115f4b62
--- /dev/null
+++ b/tools/source/datetime/systemdatetime.cxx
@@ -0,0 +1,107 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
+/*
+ * 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 .
+ */
+#if defined(_WIN32)
+#if !defined WIN32_LEAN_AND_MEAN
+#define WIN32_LEAN_AND_MEAN
+#endif
+#include <windows.h>
+#elif defined UNX
+#include <sys/time.h>
+#endif
+
+#include <time.h>
+#ifdef __MACH__
+#include <mach/clock.h>
+#include <mach/mach.h>
+#include <mach/mach_time.h>
+#endif
+
+#include <osl/diagnose.h>
+#include <systemdatetime.hxx>
+
+namespace
+{
+constexpr sal_Int32 ConvertYMDToInt(sal_Int32 nYear, sal_Int32 nMonth, sal_Int32 nDay)
+{
+    return (nYear * 10000) + (nMonth * 100) + nDay;
+}
+
+constexpr sal_Int64 ConvertHMSnToInt(sal_Int64 nHour, sal_Int64 nMin, sal_Int64 nSec,
+                                     sal_Int64 nNanoSec)
+{
+    return (nHour * HOUR_MASK) + (nMin * MIN_MASK) + (nSec * SEC_MASK) + nNanoSec;
+}
+}
+
+bool GetSystemDateTime(sal_Int32* pDate, sal_Int64* pTime)
+{
+#if defined(_WIN32)
+    SYSTEMTIME aDateTime;
+    GetLocalTime(&aDateTime);
+
+    if (pDate)
+        *pDate = ConvertYMDToInt(static_cast<sal_Int32>(aDateTime.wYear),
+                                 static_cast<sal_Int32>(aDateTime.wMonth),
+                                 static_cast<sal_Int32>(aDateTime.wDay));
+    if (pTime)
+        *pTime = ConvertHMSnToInt(aDateTime.wHour, aDateTime.wMinute, aDateTime.wSecond,
+                                  aDateTime.wMilliseconds * 1000000);
+
+    return true;
+#else
+    struct timespec tsTime;
+#if defined(__MACH__)
+    // macOS does not have clock_gettime, use clock_get_time
+    clock_serv_t cclock;
+    mach_timespec_t mts;
+    host_get_clock_service(mach_host_self(), CALENDAR_CLOCK, &cclock);
+    clock_get_time(cclock, &mts);
+    mach_port_deallocate(mach_task_self(), cclock);
+    tsTime.tv_sec = mts.tv_sec;
+    tsTime.tv_nsec = mts.tv_nsec;
+#else
+    // CLOCK_REALTIME should be supported
+    // on any modern Unix, but be extra cautious
+    if (clock_gettime(CLOCK_REALTIME, &tsTime) != 0)
+    {
+        struct timeval tvTime;
+        OSL_VERIFY(gettimeofday(&tvTime, nullptr) != 0);
+        tsTime.tv_sec = tvTime.tv_sec;
+        tsTime.tv_nsec = tvTime.tv_usec * 1000;
+    }
+#endif
+
+    struct tm aTime;
+    time_t nTmpTime = tsTime.tv_sec;
+    if (localtime_r(&nTmpTime, &aTime))
+    {
+        if (pDate)
+            *pDate = ConvertYMDToInt(static_cast<sal_Int32>(aTime.tm_year + 1900),
+                                     static_cast<sal_Int32>(aTime.tm_mon + 1),
+                                     static_cast<sal_Int32>(aTime.tm_mday));
+        if (pTime)
+            *pTime = ConvertHMSnToInt(aTime.tm_hour, aTime.tm_min, aTime.tm_sec, tsTime.tv_nsec);
+        return true;
+    }
+
+    return false;
+#endif
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */