/// <summary>
/// Serializes this storage object into a byte array
/// </summary>
/// <param name="IncludeHeader">Whether or not to include the storage header in the output</param>
/// <returns>A serialized byte array representation of all stored value entries</returns>
public byte[] Serialize(bool IncludeHeader = true)
{
// Lock our dictionary to prevent race conditions
lock (Entries)
{
// Begin by creating an empty output buffer
byte[] Output = new byte[0];
// Write header to output buffer if specified
if (IncludeHeader)
{
// Add signatures and version
Output = Output.AppendBytes(STORAGE_SIGNATURE_A);
Output = Output.AppendBytes(STORAGE_SIGNATURE_B);
Output = Output.AppendBytes(STORAGE_VERSION);
}
// Add the number of entries our entry dictionary contains as a varint
Output = Output.AppendBytes(PackP2pVarInt(Entries.Count));
// Iterate over and serialize each entry into our output buffer
foreach (var Entry in Entries)
{
// Serialize entry object
byte[] ObjectBytes = SerializeObject(Entry);
// Append to output buffer
Output = Output.AppendBytes(ObjectBytes);
}
// Return output array
return(Output);
}
}
// Deserialized a storage entry from a byte buffer
private byte[] DeserializeEntry(byte[] Data)
{
// Buffer is empty
if (Data.Length == 0)
{
return(Data);
}
// Get entry name
int NameLength = ByteArrayToInteger <byte>(Data, 0);
if (NameLength < 1 || NameLength > MAX_STRING_LENGTH)
{
throw new Exception("Name size exceeds allowed string bounds");
}
string Name = System.Text.Encoding.UTF8.GetString(Data, 1, NameLength);
Data = Data.SubBytes(NameLength + 1, Data.Length - NameLength - 1);
// Get object type
int ValueType = Data.SubBytes(0, 1)[0];
// Type is a serializable type
if (ValueType > 0 || ValueType < 14)
{
// Get serialization type
SerializationType Type = (SerializationType)ValueType;
Data = Data.SubBytes(1, Data.Length - 1);
// Deserialize object based on type
switch (Type)
{
#region Integers
case SerializationType.LONG:
Entries.Add(Name, ByteArrayToInteger <long>(Data));
return(Data.SubBytes(8, Data.Length - 8));
case SerializationType.INT:
Entries.Add(Name, ByteArrayToInteger <int>(Data));
return(Data.SubBytes(4, Data.Length - 4));
case SerializationType.SHORT:
Entries.Add(Name, ByteArrayToInteger <short>(Data));
return(Data.SubBytes(2, Data.Length - 2));
case SerializationType.SBYTE:
Entries.Add(Name, ByteArrayToInteger <sbyte>(Data));
return(Data.SubBytes(1, Data.Length - 1));
case SerializationType.ULONG:
Entries.Add(Name, ByteArrayToInteger <ulong>(Data));
return(Data.SubBytes(8, Data.Length - 8));
case SerializationType.UINT:
Entries.Add(Name, ByteArrayToInteger <uint>(Data));
return(Data.SubBytes(4, Data.Length - 4));
case SerializationType.USHORT:
Entries.Add(Name, ByteArrayToInteger <ushort>(Data));
return(Data.SubBytes(2, Data.Length - 2));
case SerializationType.BYTE:
Entries.Add(Name, ByteArrayToInteger <byte>(Data));
return(Data.SubBytes(1, Data.Length - 1));
case SerializationType.DOUBLE:
Entries.Add(Name, ByteArrayToInteger <double>(Data));
return(Data.SubBytes(8, Data.Length - 8));
case SerializationType.BOOL:
Entries.Add(Name, Convert.ToBoolean(ByteArrayToInteger <byte>(Data)));
return(Data.SubBytes(1, Data.Length - 1));
#endregion
#region Miscellaneous
case SerializationType.STRING:
int Length = UnpackP2pVarInt <int>(Data, 0, out int Offset);
Entries.Add(Name, ByteArrayToHexString(Data.SubBytes(Offset, Length)));
return(Data.SubBytes(Offset + Length, Data.Length - Offset - Length));
#endregion
#region Not Implemented
case SerializationType.OBJECT:
PortableStorage Storage = new PortableStorage(Data, out Data, false);
Entries.Add(Name, Storage.Entries);
return(Data);
case SerializationType.OBJECTARRAY:
return(new byte[0]);
default:
return(new byte[0]);
#endregion
}
}
// Non-serializable type, treat as a single long hex string
else
{
// TODO - This isn't final, I still need to explore how other things are serialized
Entries.Add(Name, ByteArrayToHexString(Data));
return(new byte[0]);
}
}
// Serializes an object to a byte array
private static byte[] SerializeObject(dynamic Entry)
{
// Append entry name
byte[] Output = new[] { (byte)Entry.Key.Length };
Output = Output.AppendString((string)Entry.Key);
// Get entry value
var Value = Entry.Value;
// Get object's type
var Type = GetType(Value);
if (Type != SerializationType.BYTEARRAY)
{
Output = Output.AppendBytes(new[] { (byte)Type });
}
else
{
Output = Output.AppendBytes(new[] { (byte)SerializationType.STRING });
}
// Serialize object based on type
switch (Type)
{
#region Integers
case SerializationType.LONG:
Output = Output.AppendInteger((long)Value);
break;
case SerializationType.INT:
Output = Output.AppendInteger((int)Value);
break;
case SerializationType.SHORT:
Output = Output.AppendInteger((short)Value);
break;
case SerializationType.SBYTE:
Output = Output.AppendInteger((sbyte)Value);
break;
case SerializationType.ULONG:
Output = Output.AppendInteger((ulong)Value);
break;
case SerializationType.UINT:
Output = Output.AppendInteger((uint)Value);
break;
case SerializationType.USHORT:
Output = Output.AppendInteger((ushort)Value);
break;
case SerializationType.BYTE:
Output = Output.AppendInteger((byte)Value);
break;
case SerializationType.DOUBLE:
Output = Output.AppendInteger((double)Value);
break;
case SerializationType.BOOL:
Output = Output.AppendInteger((bool)Value ? (byte)0x01 : (byte)0x00);
break;
#endregion
#region Others
case SerializationType.STRING:
// String size exceeds maximum length, default to nothing
if (((string)Value).Length > MAX_STRING_LENGTH)
{
throw new ArgumentOutOfRangeException("Entry string was too long to serialize");
}
// Append string length as a varint
Output = Output.AppendBytes(PackP2pVarInt(((string)Value).Length));
// Append string bytes
Output = Output.AppendString((string)Value);
break;
case SerializationType.BYTEARRAY:
// Byte size exceeds maximum length, default to nothing
if (((byte[])Value).Length > MAX_STRING_LENGTH)
{
throw new ArgumentOutOfRangeException("Entry byte array was too long to serialize");
}
// Append string length as a varint
Output = Output.AppendBytes(PackP2pVarInt(((byte[])Value).Length));
// Append string bytes
Output = Output.AppendBytes((byte[])Value);
break;
#endregion
#region Not Implemented
case SerializationType.OBJECT:
// Object is a dictionary
Type ValueType = Value.GetType();
if (ValueType.IsGenericType && ValueType.GetGenericTypeDefinition() == typeof(Dictionary <,>))
{
// Create a portable storage from dictionary
PortableStorage Storage = (Dictionary <string, dynamic>)Value;
// Append bytes
Output = Output.AppendBytes(Storage.Serialize(false));
break;
}
else
{
throw new NotImplementedException();
}
case SerializationType.OBJECTARRAY:
throw new NotImplementedException();
default:
return(new byte[0]);
#endregion
}
// Return resulting output buffer
return(Output);
}
