public XnbFile <T> Deserialize <T>(Stream stream)
{
if (stream == null)
{
throw new ArgumentNullException(nameof(stream));
}
var xnbResult = new XnbFile <T>();
var xnbStreamReader = new XnbStreamReader(stream);
// check if file starts with XNB
ValidatePrefix(xnbStreamReader);
// read the XNB target OS
xnbResult.XnbTargetOs = ReadTargetOs(xnbStreamReader);
// read the XNB format version
xnbResult.FormatVersion = ReadFormatVersion(xnbStreamReader);
// read the XNB flag
var flags = xnbResult.Flags = ReadFlags(xnbStreamReader);
// read the file size
var size = xnbResult.Size = (int)xnbStreamReader.ReadUInt32();
// check if encoded. If so, decode stream
xnbStreamReader = DecodeXnbStreamReader(xnbStreamReader, flags, size);
var xnbReaderManager = new XnbReaderManager();
xnbReaderManager.ReadReaders(xnbStreamReader);
// ensure there are no shared resources
var sharedResourcesCount = xnbStreamReader.Read7BitEncodedInt();
if (sharedResourcesCount != 0)
{
throw new NotSupportedException("Shared resources are not supported");
}
int readerIndex = xnbStreamReader.Read7BitEncodedInt();
var reader = xnbReaderManager.XnbReaderFromIndex(readerIndex);
if (reader == null)
{
xnbResult.Content = default(T);
}
else if (reader.Read(xnbReaderManager, xnbStreamReader) is T content)
{
xnbResult.Content = content;
}
else
{
throw new XnbException("Invalid type");
}
return(xnbResult);
}
public abstract void Write(XnbReaderManager xnbReaderManager, XnbStreamWriter xnbStreamWriter, object value);
public abstract object Read(XnbReaderManager xnbReaderManager, XnbStreamReader xnbStreamReader);
public byte[] Serialize <T>(T value,
XnbTargetOs xnbTargetOs = XnbTargetOs.MicrosoftWindow,
byte formatVersion = 5,
XnbFlags flags = 0
)
{
var xnbStreamWriter = new XnbStreamWriter(new MemoryStream());
// write XNB default header
xnbStreamWriter.Write('X');
xnbStreamWriter.Write('N');
xnbStreamWriter.Write('B');
// write XNB target OS
xnbStreamWriter.Write((byte)xnbTargetOs);
// write XNB format version
xnbStreamWriter.Write(formatVersion);
// write XNB flags
// remove compression flag
flags = flags & ~XnbFlags.ContentCompressedLzx;
xnbStreamWriter.Write((byte)flags);
//tmp file size
long sizeIndex = xnbStreamWriter.BaseStream.Position;
xnbStreamWriter.Write(0);
//TODO: encoding here
Type readerType = XnbTypeReaderTypeResolver.ResolveFromTargetType <T>();
XnbTypeReader reader = XnbReaderFactory.CreateReaderFromType(readerType);
var xnbReaderManager = new XnbReaderManager(reader);
var tmpStream = new XnbStreamWriter(new MemoryStream());
reader.Write(xnbReaderManager, tmpStream, value);
List <XnbTypeReader> xnbTypeReaders = xnbReaderManager.XnbTypeReaders;
// write reader count
xnbStreamWriter.Write7BitEncodedInt(xnbTypeReaders.Count);
// write readers and version
foreach (XnbTypeReader xnbTypeReader in xnbTypeReaders)
{
xnbStreamWriter.Write(xnbTypeReader.Name);
xnbStreamWriter.Write(xnbTypeReader.Version);
}
// no shared resources
xnbStreamWriter.Write7BitEncodedInt(0);
// write initial reader index
xnbStreamWriter.Write7BitEncodedInt(1);
tmpStream.BaseStream.Position = 0;
tmpStream.BaseStream.CopyTo(xnbStreamWriter.BaseStream);
xnbStreamWriter.BaseStream.Position = sizeIndex;
xnbStreamWriter.Write((int)xnbStreamWriter.BaseStream.Length);
using (var ms = new MemoryStream())
{
xnbStreamWriter.BaseStream.Position = 0;
xnbStreamWriter.BaseStream.CopyTo(ms);
return(ms.ToArray());
}
}
