public void PrepareRead(NpgsqlBuffer buf, int len, FieldDescription fieldDescription)
{
// Subtract one byte for the version number
_textHandler.PrepareRead(buf, fieldDescription, len - 1);
_buf = buf;
_handledVersion = false;
}
public bool Read(out IDictionary <string, string> result)
{
result = null;
switch (_state)
{
case State.Count:
if (_buf.ReadBytesLeft < 4)
{
return(false);
}
_numElements = _buf.ReadInt32();
_value = new Dictionary <string, string>(_numElements);
if (_numElements == 0)
{
CleanupState();
return(true);
}
goto case State.KeyLen;
case State.KeyLen:
_state = State.KeyLen;
if (_buf.ReadBytesLeft < 4)
{
return(false);
}
var keyLen = _buf.ReadInt32();
Contract.Assume(keyLen != -1);
_textHandler.PrepareRead(_buf, _fieldDescription, keyLen);
goto case State.KeyData;
case State.KeyData:
_state = State.KeyData;
if (!_textHandler.Read(out _key))
{
return(false);
}
goto case State.ValueLen;
case State.ValueLen:
_state = State.ValueLen;
if (_buf.ReadBytesLeft < 4)
{
return(false);
}
var valueLen = _buf.ReadInt32();
if (valueLen == -1)
{
_value[_key] = null;
if (--_numElements == 0)
{
result = _value;
CleanupState();
return(true);
}
goto case State.KeyLen;
}
_textHandler.PrepareRead(_buf, _fieldDescription, valueLen);
goto case State.ValueData;
case State.ValueData:
_state = State.ValueData;
string value;
if (!_textHandler.Read(out value))
{
return(false);
}
_value[_key] = value;
if (--_numElements == 0)
{
result = _value;
CleanupState();
return(true);
}
goto case State.KeyLen;
default:
throw PGUtil.ThrowIfReached();
}
}