//re-compress node
public override void Encode(BinaryWriter writer)
{
// encode the node into bytes
byte[] data;
MemoryStream uncompressedStream = new MemoryStream();
using (BinaryWriter w = new BinaryWriter(uncompressedStream)) {
// use the node's own codec or we'll mess up the string lists
Decoded.Codec.EncodeRootNode(w, Decoded);
data = uncompressedStream.ToArray();
}
uint uncompressedSize = (uint)data.LongLength;
// compress the encoded data
#if DEBUG
Console.WriteLine("compressing...");
#endif
MemoryStream outStream = new MemoryStream();
LzmaEncoder encoder = new LzmaEncoder();
using (uncompressedStream = new MemoryStream(data)) {
encoder.Code(uncompressedStream, outStream, data.Length, long.MaxValue, null);
data = outStream.ToArray();
}
#if DEBUG
Console.WriteLine("ok, compression done");
#endif
// prepare decoding information
List <EsfNode> infoItems = new List <EsfNode>();
infoItems.Add(new UIntNode {
Value = uncompressedSize, TypeCode = EsfType.UINT32, Codec = Codec
});
using (MemoryStream propertyStream = new MemoryStream()) {
encoder.WriteCoderProperties(propertyStream);
infoItems.Add(new RawDataNode(Codec)
{
Value = propertyStream.ToArray()
});
}
// put together the items expected by the unzipper
List <EsfNode> dataItems = new List <EsfNode>();
dataItems.Add(new RawDataNode(Codec)
{
Value = data
});
dataItems.Add(new RecordNode(Codec)
{
Name = CompressedNode.INFO_TAG, Value = infoItems
});
RecordNode compressedNode = new RecordNode(Codec)
{
Name = CompressedNode.TAG_NAME, Value = dataItems
};
// and finally encode
compressedNode.Encode(writer);
}
protected virtual void WriteRecordNode(BinaryWriter writer, EsfNode node)
{
RecordNode recordNode = node as RecordNode;
recordNode.Encode(writer);
}