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This commit is contained in:
Igor Pavlov
2011-04-11 00:00:00 +00:00
committed by Kornel Lesiński
parent de4f8c22fe
commit 35596517f2
322 changed files with 9989 additions and 7759 deletions
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43
CPP/Windows/Time.cpp
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@@ -13,8 +13,9 @@ static const UInt32 kNumTimeQuantumsInSecond = 10000000;
static const UInt32 kFileTimeStartYear = 1601;
static const UInt32 kDosTimeStartYear = 1980;
static const UInt32 kUnixTimeStartYear = 1970;
static const UInt64 kUnixTimeStartValue = ((UInt64)kNumTimeQuantumsInSecond) *
60 * 60 * 24 * (89 + 365 * (kUnixTimeStartYear - kFileTimeStartYear));
static const UInt64 kUnixTimeOffset =
(UInt64)60 * 60 * 24 * (89 + 365 * (kUnixTimeStartYear - kFileTimeStartYear));
static const UInt64 kNumSecondsInFileTime = (UInt64)(Int64)-1 / kNumTimeQuantumsInSecond;
bool DosTimeToFileTime(UInt32 dosTime, FILETIME &ft)
{
@@ -117,20 +118,52 @@ bool FileTimeToDosTime(const FILETIME &ft, UInt32 &dosTime)
void UnixTimeToFileTime(UInt32 unixTime, FILETIME &ft)
{
UInt64 v = kUnixTimeStartValue + ((UInt64)unixTime) * kNumTimeQuantumsInSecond;
UInt64 v = (kUnixTimeOffset + (UInt64)unixTime) * kNumTimeQuantumsInSecond;
ft.dwLowDateTime = (DWORD)v;
ft.dwHighDateTime = (DWORD)(v >> 32);
}
bool UnixTime64ToFileTime(Int64 unixTime, FILETIME &ft)
{
Int64 v = (Int64)kUnixTimeOffset + unixTime;
if (unixTime < 0)
{
if (v < 0)
{
ft.dwLowDateTime = ft.dwHighDateTime = 0;
return false;
}
}
else
{
if (v < unixTime || v > kNumSecondsInFileTime)
{
ft.dwLowDateTime = ft.dwHighDateTime = (UInt32)(Int32)-1;
return false;
}
}
UInt64 v2 = (UInt64)v * kNumTimeQuantumsInSecond;
ft.dwLowDateTime = (DWORD)v2;
ft.dwHighDateTime = (DWORD)(v2 >> 32);
return true;
}
Int64 FileTimeToUnixTime64(const FILETIME &ft)
{
UInt64 winTime = (((UInt64)ft.dwHighDateTime) << 32) + ft.dwLowDateTime;
return (Int64)(winTime / kNumTimeQuantumsInSecond) - kUnixTimeOffset;
}
bool FileTimeToUnixTime(const FILETIME &ft, UInt32 &unixTime)
{
UInt64 winTime = (((UInt64)ft.dwHighDateTime) << 32) + ft.dwLowDateTime;
if (winTime < kUnixTimeStartValue)
winTime /= kNumTimeQuantumsInSecond;
if (winTime < kUnixTimeOffset)
{
unixTime = 0;
return false;
}
winTime = (winTime - kUnixTimeStartValue) / kNumTimeQuantumsInSecond;
winTime -= kUnixTimeOffset;
if (winTime > 0xFFFFFFFF)
{
unixTime = 0xFFFFFFFF;