public void WriteTo(MessageStore store)
{
using (MemoryStream mS = new MemoryStream(128))
{
BincodingEncoder encoder = new BincodingEncoder(mS, "MI", 1);
encoder.Encode((byte)_type);
encoder.Encode(_messageDate);
switch (_type)
{
case MessageType.Info:
encoder.Encode(_message);
break;
case MessageType.TextMessage:
case MessageType.InvitationMessage:
encoder.Encode(_sender);
encoder.Encode(_message);
encoder.Encode(_recipients);
break;
case MessageType.SharedFileMetaData:
encoder.Encode(_sender);
encoder.Encode(_sharedFileMetaData);
break;
default:
throw new NotSupportedException("MessageType not supported: " + _type);
}
byte[] messageData = mS.ToArray();
if (_messageNumber == -1)
{
_messageNumber = store.WriteMessage(messageData, 0, messageData.Length);
}
else
{
store.UpdateMessage(_messageNumber, messageData, 0, messageData.Length);
}
}
}
public MessageItem(MessageStore store, int messageNumber)
{
_messageNumber = messageNumber;
byte[] messageData = store.ReadMessage(messageNumber);
using (MemoryStream mS = new MemoryStream(messageData))
{
if (Encoding.ASCII.GetString(messageData, 0, 2) == "MI")
{
//new format
BincodingDecoder decoder = new BincodingDecoder(mS, "MI");
switch (decoder.Version)
{
case 1:
_type = (MessageType)decoder.DecodeNext().GetByteValue();
_messageDate = decoder.DecodeNext().GetDateTimeValue();
switch (_type)
{
case MessageType.Info:
_message = decoder.DecodeNext().GetStringValue();
break;
case MessageType.TextMessage:
case MessageType.InvitationMessage:
_sender = decoder.DecodeNext().GetStringValue();
_message = decoder.DecodeNext().GetStringValue();
{
List <Bincoding> rcptDataList = decoder.DecodeNext().GetList();
_recipients = new MessageRecipient[rcptDataList.Count];
int i = 0;
foreach (Bincoding data in rcptDataList)
{
_recipients[i++] = new MessageRecipient(data.GetValueStream());
}
}
break;
case MessageType.SharedFileMetaData:
_sender = decoder.DecodeNext().GetStringValue();
_sharedFileMetaData = new SharedFileMetaData(decoder.DecodeNext().GetValueStream());
break;
}
break;
default:
throw new InvalidDataException("Cannot decode data format: version not supported.");
}
}
else
{
//old format support
BincodingDecoder decoder = new BincodingDecoder(mS);
_type = (MessageType)decoder.DecodeNext().GetByteValue();
_messageDate = _epoch.AddSeconds(decoder.DecodeNext().GetLongValue());
switch (_type)
{
case MessageType.Info:
_message = decoder.DecodeNext().GetStringValue();
break;
case MessageType.TextMessage:
_sender = decoder.DecodeNext().GetStringValue();
_message = decoder.DecodeNext().GetStringValue();
_recipients = new MessageRecipient[] { };
break;
}
}
}
}
