bool SetTimestampsFromExtendedTimeStamp(IList <ExtraField> fields, WindowsZipEntry entry)
{
if (fields == null || fields.Count == 0)
{
return(false);
}
DateTime modTime = DateTime.MinValue;
DateTime accTime = DateTime.MinValue;
DateTime createTime = DateTime.MinValue;
ForEachExtraField(fields, true, (ExtraField ef) => SetExtendedTimeStampTimes(new ExtraField_ExtendedTimestamp(ef), ref modTime, ref accTime, ref createTime));
// Central directory field only has the modification time, if at all
if (modTime == DateTime.MinValue)
{
ForEachExtraField(fields, false, (ExtraField ef) => SetExtendedTimeStampTimes(new ExtraField_ExtendedTimestamp(ef), ref modTime, ref accTime, ref createTime));
}
// We reset the entry modification time only if we got a valid value since
// that time is also set from the entry header in ZipEntry constructor - no
// need to invalidate that value if we don't have anything better.
if (modTime != DateTime.MinValue)
{
entry.ModificationTime = modTime;
}
// We don't care as much about the other times
entry.AccessTime = accTime;
entry.CreationTime = createTime;
return(true);
}
bool SetTimestampsFromInfoZipUnixOriginal(IList <ExtraField> fields, WindowsZipEntry entry)
{
if (fields == null || fields.Count == 0)
{
return(false);
}
DateTime modTime = DateTime.MinValue;
DateTime accTime = DateTime.MinValue;
ForEachExtraField(fields, true, (ExtraField ef) => {
var izef = new ExtraField_InfoZipUnixOriginal(ef);
SetOriginalUnixTimeStampTimes(izef, ref modTime, ref accTime);
});
if (modTime == DateTime.MinValue)
{
ForEachExtraField(fields, false, (ExtraField ef) => SetOriginalUnixTimeStampTimes(new ExtraField_InfoZipUnixOriginal(ef), ref modTime, ref accTime));
}
if (modTime != DateTime.MinValue)
{
entry.ModificationTime = modTime;
}
// We ignore ID/GID here because it's less important than timestamps which may be set from other
// fields should this one lack any of them.
return(modTime != DateTime.MinValue || accTime != DateTime.MinValue);
}