public void LinuxTime(long?mTime, long?aTime, long?cTime, bool centralDir)
{
List <byte> eTime = new();
byte flags = 0;
if (mTime != null)
{
flags |= 0x01;
eTime.AddRange(BitConverter.GetBytes(CompressUtils.UtcTicksToUnixDateTime((long)mTime)));
}
if (!centralDir)
{
if (aTime != null)
{
flags |= 0x02;
eTime.AddRange(BitConverter.GetBytes(CompressUtils.UtcTicksToUnixDateTime((long)aTime)));
}
if (cTime != null)
{
flags |= 0x04;
eTime.AddRange(BitConverter.GetBytes(CompressUtils.UtcTicksToUnixDateTime((long)cTime)));
}
}
if (flags == 0)
{
return;
}
_extraField.AddRange(BitConverter.GetBytes((ushort)0x5455));
_extraField.AddRange(BitConverter.GetBytes((ushort)eTime.Count + 1));
_extraField.Add(flags);
_extraField.AddRange(eTime);
}