public BincodingDecoder(Stream s, string format)
{
if (format.Length != 2)
{
throw new ArgumentException("Argument 'format' must be of 2 characters.");
}
byte[] buffer = new byte[2];
OffsetStream.StreamRead(s, buffer, 0, 2);
if (format != Encoding.ASCII.GetString(buffer))
{
throw new InvalidDataException("Unable to decode: invalid data format.");
}
_s = s;
_format = format;
int version = s.ReadByte();
if (version < 0)
{
throw new EndOfStreamException();
}
_version = (byte)version;
}
public BinaryNumber(Stream s)
{
int length = s.ReadByte();
if (length < 0)
{
throw new EndOfStreamException();
}
_number = new byte[length];
OffsetStream.StreamRead(s, _number, 0, length);
}
public Bincoding DecodeNext()
{
if (_lastStream != null)
{
if ((_lastStream.Length - _lastStream.Position) > 0)
{
OffsetStream.StreamCopy(_lastStream, new NullStream());
}
_lastStream = null;
}
BincodingType type = (BincodingType)_s.ReadByte();
switch (type)
{
case BincodingType.NULL:
return(new Bincoding(type, null));
case BincodingType.BOOLEAN:
case BincodingType.BYTE:
{
byte value = (byte)_s.ReadByte();
return(new Bincoding(type, new byte[] { value }));
}
case BincodingType.SHORT:
case BincodingType.USHORT:
{
byte[] value = new byte[2];
OffsetStream.StreamRead(_s, value, 0, 2);
return(new Bincoding(type, value));
}
case BincodingType.INTEGER:
case BincodingType.UINTEGER:
{
byte[] value = new byte[4];
OffsetStream.StreamRead(_s, value, 0, 4);
return(new Bincoding(type, value));
}
case BincodingType.LONG:
case BincodingType.ULONG:
case BincodingType.DATETIME:
{
byte[] value = new byte[8];
OffsetStream.StreamRead(_s, value, 0, 8);
return(new Bincoding(type, value));
}
case BincodingType.BINARY:
case BincodingType.STRING:
{
int count = ReadLength(_s);
byte[] value = new byte[count];
OffsetStream.StreamRead(_s, value, 0, count);
return(new Bincoding(type, value));
}
case BincodingType.STREAM:
{
int count = ReadLength(_s);
_lastStream = new OffsetStream(_s, _s.Position, count, true, false);
return(Bincoding.GetValue(_lastStream));
}
case BincodingType.LIST:
{
int count = ReadLength(_s);
List <Bincoding> list = new List <Bincoding>(count);
for (int i = 0; i < count; i++)
{
list.Add(DecodeNext());
}
return(Bincoding.GetValue(list));
}
case BincodingType.KEY_VALUE_PAIR:
{
int keyLen = _s.ReadByte();
byte[] keyBuffer = new byte[keyLen];
OffsetStream.StreamRead(_s, keyBuffer, 0, keyLen);
string key = Encoding.UTF8.GetString(keyBuffer, 0, keyLen);
Bincoding value = DecodeNext();
return(Bincoding.GetValue(new KeyValuePair <string, Bincoding>(key, value)));
}
case BincodingType.DICTIONARY:
{
int count = ReadLength(_s);
Dictionary <string, Bincoding> dictionary = new Dictionary <string, Bincoding>(count);
int keyLen;
byte[] keyBuffer = new byte[255];
for (int i = 0; i < count; i++)
{
keyLen = _s.ReadByte();
OffsetStream.StreamRead(_s, keyBuffer, 0, keyLen);
string key = Encoding.UTF8.GetString(keyBuffer, 0, keyLen);
Bincoding value = DecodeNext();
dictionary.Add(key, value);
}
return(Bincoding.GetValue(dictionary));
}
default:
throw new InvalidDataException("Invalid bincoding type encountered while decoding data.");
}
}