public static CadData?Load(string fname)
{
FileStream fs = new FileStream(fname, FileMode.Open, FileAccess.Read);
byte[] sign = new byte[Sign.Length];
fs.Read(sign, 0, Sign.Length);
if (!Sign.SequenceEqual <byte>(sign))
{
fs.Close();
return(null);
}
byte[] version = new byte[Version.Length];
fs.Read(version, 0, Version.Length);
byte[] data = new byte[fs.Length - Sign.Length - Version.Length];
fs.Read(data, 0, data.Length);
fs.Close();
DOut.pl($"MpCadFile.Load {fname} {VersionStr(version)}");
if (IsVersion(version, 1, 0, 0, 0))
{
return(null);
}
else if (IsVersion(version, 1, 0, 0, 1))
{
MpCadData_v1001 mpdata = MessagePackSerializer.Deserialize <MpCadData_v1001>(data);
return(MpUtil_v1001.CreateCadData_v1001(mpdata));
}
else if (IsVersion(version, 1, 0, 0, 2))
{
MpCadData_v1002 mpdata = MessagePackSerializer.Deserialize <MpCadData_v1002>(data);
return(MpUtil_v1002.CreateCadData_v1002(mpdata));
}
return(null);
}
