/// <summary>
/// Deserializes this object and returns the number of bytes read
/// </summary>
/// <param name="buffer"></param>
/// <param name="bufferIndex"></param>
/// <returns></returns>
internal int DeserializeObject(INameTableProvider nameTable, byte[] buffer, int bufferIndex)
{
//Make counter for offset from buffer index. This'll be the length we eventually return
int offset = 0;
//Read the number of objects
int objectCount = BitConverter.ToInt32(buffer, bufferIndex + offset);
offset += 4;
//Read each object
for (int i = 0; i < objectCount; i++)
{
//Read object data
short keyIndex = BitConverter.ToInt16(buffer, bufferIndex + offset);
offset += 2;
short typeId = BitConverter.ToInt16(buffer, bufferIndex + offset);
offset += 2;
int length = BitConverter.ToInt32(buffer, bufferIndex + offset);
offset += 4;
//Deserialize
object value = DeserializeSingleObject(nameTable, buffer, bufferIndex + offset, typeId, length);
offset += length;
//Add
Add(nameTable.GetNameTableValue(keyIndex), value);
}
return(offset);
}
private object DeserializeSingleObject(INameTableProvider nameTable, byte[] buffer, int bufferIndex, short typeId, int length)
{
switch (typeId)
{
case WriteCommitObject.SER_TYPE_INT8: return(buffer[bufferIndex]);
case WriteCommitObject.SER_TYPE_INT16: return(BitConverter.ToInt16(buffer, bufferIndex));
case WriteCommitObject.SER_TYPE_INT32: return(BitConverter.ToInt32(buffer, bufferIndex));
case WriteCommitObject.SER_TYPE_INT64: return(BitConverter.ToInt64(buffer, bufferIndex));
case WriteCommitObject.SER_TYPE_FLOAT: return(BitConverter.ToSingle(buffer, bufferIndex));
case WriteCommitObject.SER_TYPE_INT8_ARRAY: return(DeserializeFixedArray <byte>(length, 1, (int offset) => buffer[bufferIndex + offset]));
case WriteCommitObject.SER_TYPE_INT16_ARRAY: return(DeserializeFixedArray <short>(length, 2, (int offset) => BitConverter.ToInt16(buffer, bufferIndex + offset)));
case WriteCommitObject.SER_TYPE_INT32_ARRAY: return(DeserializeFixedArray <int>(length, 4, (int offset) => BitConverter.ToInt32(buffer, bufferIndex + offset)));
case WriteCommitObject.SER_TYPE_INT64_ARRAY: return(DeserializeFixedArray <long>(length, 8, (int offset) => BitConverter.ToInt64(buffer, bufferIndex + offset)));
case WriteCommitObject.SER_TYPE_FLOAT_ARRAY: return(DeserializeFixedArray <float>(length, 4, (int offset) => BitConverter.ToSingle(buffer, bufferIndex + offset)));
case WriteCommitObject.SER_TYPE_STRING: return(Encoding.UTF8.GetString(buffer, bufferIndex, length));
case WriteCommitObject.SER_TYPE_STRING_ARRAY: return(DeserializeDynamicArray <string>(buffer, bufferIndex, (int offset, out int len) =>
{
len = BitConverter.ToInt32(buffer, bufferIndex + offset) + 4;
return Encoding.UTF8.GetString(buffer, bufferIndex + offset + 4, len - 4);
}));
case WriteCommitObject.SER_TYPE_OBJECT:
DatabaseObject child = new DatabaseObject();
child.DeserializeObject(nameTable, buffer, bufferIndex);
return(child);
case WriteCommitObject.SER_TYPE_OBJECT_ARRAY: return(DeserializeDynamicArray <DatabaseObject>(buffer, bufferIndex, (int offset, out int len) =>
{
DatabaseObject child = new DatabaseObject();
len = child.DeserializeObject(nameTable, buffer, bufferIndex + offset);
return child;
}));
case WriteCommitObject.SER_TYPE_BOOL: return(buffer[bufferIndex] == 0x01);
case WriteCommitObject.SER_TYPE_BOOL_ARRAY: return(DeserializeFixedArray <bool>(length, 1, (int offset) => buffer[bufferIndex + offset] == 0x01));
case WriteCommitObject.SER_TYPE_DOUBLE: return(BitConverter.ToDouble(buffer, bufferIndex));
case WriteCommitObject.SER_TYPE_DOUBLE_ARRAY: return(DeserializeFixedArray <double>(length, 8, (int offset) => BitConverter.ToDouble(buffer, bufferIndex + offset)));
case WriteCommitObject.SER_TYPE_STRING_ENUM: return(nameTable.GetNameTableValue(BitConverter.ToInt16(buffer, bufferIndex)));
default: throw new Exception("Unknown Type ID!");
}
}
