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Use winrt for time conversion #5763

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Merged
JohnMcPMS merged 1 commit into from
Oct 3, 2025
Merged

Use winrt for time conversion #5763

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14 changes: 1 addition & 13 deletions src/AppInstallerSharedLib/DateTime.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -146,19 +146,7 @@ namespace AppInstaller::Utility

std::chrono::system_clock::time_point ConvertFiletimeToSystemClock(const FILETIME& fileTime)
{
// Windows epoch (1601) to Unix epoch (1970) offset in 100-nanosecond intervals
constexpr int64_t EPOCH_DIFFERENCE = 116444736000000000LL;

// Combine FILETIME into a 64-bit value
uint64_t fileTimeValue = (static_cast<uint64_t>(fileTime.dwHighDateTime) << 32) | fileTime.dwLowDateTime;

// Convert to 100-nanosecond intervals since Unix epoch
int64_t unixTime100ns = static_cast<int64_t>(fileTimeValue) - EPOCH_DIFFERENCE;

// Convert to chrono duration (system_clock::duration is usually nanoseconds or microseconds)
return std::chrono::system_clock::time_point(
std::chrono::duration_cast<std::chrono::system_clock::duration>(
std::chrono::nanoseconds(unixTime100ns * 100)));
return winrt::clock::to_sys(winrt::clock::from_FILETIME(fileTime));
}

std::chrono::system_clock::time_point GetTimePointFromVersion(const UInt64Version& version)
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