private void Init(Stream input)
{
if (input.Length < 0x100)
{
throw new Exception(
"Invalid Savedata!\nData is too short for it to be valid, please select a valid save file");
}
long val = input.ReadInt32(true);
if (val != (long)PackageHeader.Mc02)
{
input.Position -= 4;
val = input.ReadInt64(true);
if (val != (long)PackageHeader.Fb)
{
throw new Exception("Invalid Package Header!");
}
}
PackageHeader = (PackageHeader)val;
bool isbigendian = PackageHeader == PackageHeader.Mc02;
if (PackageHeader == PackageHeader.Mc02)
{
InitMcPackage(input);
}
else
{
InitFbPackage(input);
}
uint hash = input.ReadUInt32(isbigendian);
Header = input.ReadBytes(HeaderLength - 4);
var crc = new DA3CRC();
if (crc.Compute(Header) != hash)
{
throw new Exception(
"Header data did not pass intergrity check!\nPlease choose a valid unmodified save to proceed");
}
hash = input.ReadUInt32(isbigendian);
var data = input.ReadBytes(DataLength - 4);
uint xhash = crc.Compute(data);
if (hash != xhash)
{
throw new Exception(
"Save data did not pass the intergrity check!\nPlease choose a valid unmodified save to proceed");
}
var xio = new DAIIO(data, isbigendian);
DataStructure = new SaveDataStructure().Read(xio);
xio.Close();
}
internal static int InstanceLength <T>(this DAInterface <T> instance, bool skiplength) where T : class
{
if (instance == null)
{
return(0);
}
int xreturn = 0;
var io = new DAIIO(false);
instance.Write(io, skiplength);
xreturn = (int)io.CurrentBit;
io.Close();
return(xreturn);
}
public byte[] Rebuild()
{
var io = new DAIIO(PackageHeader == PackageHeader.Mc02);
DataStructure.Write(io);
var x = io.ToArray();
io.Close();
io.Dispose();
if (PackageHeader == PackageHeader.Mc02)
{
return(BuildMcPackage(x));
}
return(BuildFbPackage(x));
}