diff options
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/source/datetime/datetime.cxx | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/tools/source/datetime/datetime.cxx b/tools/source/datetime/datetime.cxx index 30cefe07322f..aa17d65796e6 100644 --- a/tools/source/datetime/datetime.cxx +++ b/tools/source/datetime/datetime.cxx @@ -281,4 +281,24 @@ DateTime DateTime::CreateFromWin32FileDateTime( sal_uInt32 rLower, sal_uInt32 rU static_cast<sal_uInt64>( nNanos % tools::Time::nanoSecPerSec))); } +DateTime DateTime::CreateFromUnixTime(const double fSecondsSinceEpoch) +{ + double fValue = fSecondsSinceEpoch / Time::secondPerDay; + const sal_Int32 nDays = static_cast <sal_Int32>(::rtl::math::approxFloor(fValue)); + + Date aDate (1, 1, 1970); + aDate += nDays; + SAL_WARN_IF(aDate - Date(1, 1, 1970) != static_cast<sal_Int32>(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<sal_uInt32>((nNanos / tools::Time::nanoSecPerHour) % sal_uInt64( 24 )), + static_cast<sal_uInt32>((nNanos / tools::Time::nanoSecPerMinute) % sal_uInt64( 60 )), + static_cast<sal_uInt32>((nNanos / tools::Time::nanoSecPerSec) % sal_uInt64( 60 )), + static_cast<sal_uInt64>( nNanos % tools::Time::nanoSecPerSec))); +} + /* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |