public FileParameters(BER br, bool IsFile, ushort Bitmap) {
Stream si = br.BaseStream;
Int64 off = si.Position;
IsDirectory = !IsFile;
ushort? LongNameOff = null;
ushort? ShortNameOff = null;
if (0 != (Bitmap & 1U)) Attributes = br.ReadUInt16();
if (0 != (Bitmap & 2U)) ParentDirectoryID = br.ReadUInt32();
if (0 != (Bitmap & 4U)) CreationDate = br.ReadUInt32();
if (0 != (Bitmap & 8U)) ModificationDate = br.ReadUInt32();
if (0 != (Bitmap & 16U)) BackupDate = br.ReadUInt32();
if (0 != (Bitmap & 32U)) FinderInfo = br.ReadBytes(32);
if (0 != (Bitmap & 64U)) LongNameOff = br.ReadUInt16();
if (0 != (Bitmap & 128U)) ShortNameOff = br.ReadUInt16();
if (0 != (Bitmap & 256U)) NodeID = br.ReadUInt32();
if (IsFile) {
if (0 != (Bitmap & 512U)) DataForkSize = br.ReadUInt32();
if (0 != (Bitmap & 1024U)) ResourceForkSize = br.ReadUInt32();
if (0 != (Bitmap & 2048U)) ExtDataForkSize = br.ReadInt64();
if (0 != (Bitmap & 4096U)) throw new NotSupportedException("Launch limit");
if (0 != (Bitmap & 8192U)) throw new NotSupportedException("UTF-8 name");
if (0 != (Bitmap & 16384U)) ExtResourceForkSize = br.ReadInt64();
if (0 != (Bitmap & 32768U)) UnixPrivs = new FPUnixPrivs(br);
}
else {
if (0 != (Bitmap & 512U)) OffspringCount = br.ReadUInt16();
if (0 != (Bitmap & 1024U)) throw new NotSupportedException("Owner ID");
if (0 != (Bitmap & 2048U)) throw new NotSupportedException("Group ID");
if (0 != (Bitmap & 4096U)) AccessRights = br.ReadUInt32();
if (0 != (Bitmap & 8192U)) throw new NotSupportedException("Unicode Name");
if (0 != (Bitmap & 16384U)) throw new NotSupportedException("?");
if (0 != (Bitmap & 32768U)) UnixPrivs = new FPUnixPrivs(br);
}
if (LongNameOff.HasValue) {
si.Position = off + LongNameOff.Value;
LongName = UtAfp.Read1Str(si);
}
if (ShortNameOff.HasValue) {
si.Position = off + ShortNameOff.Value;
ShortName = UtAfp.Read1Str(si);
}
}