public byte[] serialize()
{
Dictionary <string, byte[]> bldata = new Dictionary <string, byte[]>();
// -"-v1"
// RelativeFilePath = Encoding.UTF8.GetBytes(string)
// BytePosition = BitConverter.GetBytes(int)
// ByteLength = BitConverter.GetBytes(int)
// -"-v2"
// BlobType = BitConverter.GetBytes(int)
// -v3
// Required: breaks compatability
// ReferenceCount = BitConverter.GetBytes(int)
// -v4
// Required
// IsMultiBlockReference = BitConverter.GetBytes(bool)
// -v5
// Required
// BSetReferenceCounts.BackupSets =
// BSetReferenceCounts.ReferenceCounts =
// -v6
// BlobType removed
// IsMultiBlockReference removed
// -v7
// IsMultiBlockReference readded
// -v8
// BlockHashes = enum_encode
// -v9
// EncryptedHash = bytes
bldata.Add("EncryptedHash-v9", EncryptedHash == null ? new byte[0] : EncryptedHash);
bldata.Add("RelativeFilePath-v1", Encoding.UTF8.GetBytes(RelativeFilePath));
bldata.Add("ByteLength-v1", BitConverter.GetBytes(ByteLength));
bldata.Add("BSetReferenceCounts.BackupSets-v5", BinaryEncoding.enum_encode(BSetReferenceCounts.Keys.Select(bsr => bsr.serialize())));
bldata.Add("BSetReferenceCounts.ReferenceCounts-v5", BinaryEncoding.enum_encode(BSetReferenceCounts.Values.Select(rc => BitConverter.GetBytes(rc))));
bldata.Add("IsMultiBlockReference-v7", BitConverter.GetBytes(BlockHashes != null));
if (BlockHashes != null)
{
bldata.Add("BlockHashes-v8", BinaryEncoding.enum_encode(BlockHashes));
}
return(BinaryEncoding.dict_encode(bldata));
}
/// <summary>
/// Store this node and its descendents in a blobstore
/// Breaks with circular references, but these should only occur
/// with hard- (and soft-?) -links TODO: handle links
/// </summary>
/// <param name="blobs"></param>
/// <param name="storeGetHash">Function called to store node data, returns hash</param>
/// <returns>The hash of the stored tree and a tree of its child hashes.</returns>
public (byte[] nodehash, HashTreeNode node) Store(Func <byte[], byte[]> storeGetHash)
{
List <(byte[] nodehash, HashTreeNode?node)> children = new List <(byte[] nodehash, HashTreeNode?node)>();
List <byte[]> dirhashes = new List <byte[]>();
foreach (MetadataNode dir in Directories.Values)
{
var(newhash, newnode) = dir.Store(storeGetHash);
dirhashes.Add(newhash);
children.Add((newhash, newnode));
}
foreach (var fm in Files.Values.AsEnumerable())
{
if (fm.FileHash == null)
{
throw new NullReferenceException("Stored filehashes cannot be null");
}
children.Add((fm.FileHash, null));
}
Dictionary <string, byte[]> mtdata = new Dictionary <string, byte[]>();
// -"-v1"
// DirMetadata = FileMetadata DirMetadata.serialize()
// Directories = enum_encode([Directories.Values MetadataNode.serialize(),... ])
// Files = enum_encode([Files.Values FileMetadata.serialize(),... ])
// -"-v2"
// Directories = enum_encode([dirrefs,...])
// "-v3"
// DirectoriesMultiblock = enum_encode([BitConverter.GetBytes(multiblock),...])
// -v4
// removed DirectoriesMultiblock
mtdata.Add("DirMetadata-v1", DirMetadata.serialize());
mtdata.Add("Files-v1", BinaryEncoding.enum_encode(Files.Values.AsEnumerable()
.Select(fm => fm.serialize())));
mtdata.Add("Directories-v2", BinaryEncoding.enum_encode(dirhashes));
byte[] nodehash = storeGetHash(BinaryEncoding.dict_encode(mtdata));
HashTreeNode node = new HashTreeNode(children);
return(nodehash, node);
}
