private void ReadNullMap(int fieldCount)
{
// if we are binary, then we need to load in our null bitmap
nullMap = null;
byte[] nullMapBytes = new byte[(fieldCount + 9) / 8];
packet.ReadByte();
packet.Read(nullMapBytes, 0, nullMapBytes.Length);
nullMap = new BitArray(nullMapBytes);
}
private MySqlGuid ReadOldGuid(MySqlPacket packet, long length)
{
if (length == -1)
length = (long)packet.ReadFieldLength();
byte[] buff = new byte[length];
packet.Read(buff, 0, (int)length);
MySqlGuid g = new MySqlGuid(buff);
g.OldGuids = OldGuids;
return g;
}
IMySqlValue IMySqlValue.ReadValue(MySqlPacket packet, long length,
bool nullVal)
{
if (nullVal)
return new MySqlDouble(true);
if (length == -1)
{
byte[] b = new byte[8];
packet.Read(b, 0, 8);
return new MySqlDouble(BitConverter.ToDouble(b, 0));
}
string s = packet.ReadString(length);
double d;
try
{
d = Double.Parse(s, CultureInfo.InvariantCulture);
}
catch (OverflowException)
{
// MySQL server < 5.5 can return values not compatible with
// Double.Parse(), i.e out of range for double.
if (s.StartsWith("-"))
d = double.MinValue;
else
d = double.MaxValue;
}
return new MySqlDouble(d);
}
IMySqlValue IMySqlValue.ReadValue(MySqlPacket packet, long length, bool nullVal)
{
MySqlBinary b;
if (nullVal)
b = new MySqlBinary(type, true);
else
{
if (length == -1)
length = (long)packet.ReadFieldLength();
byte[] newBuff = new byte[length];
packet.Read(newBuff, 0, (int)length);
b = new MySqlBinary(type, newBuff);
}
return b;
}
IMySqlValue IMySqlValue.ReadValue(MySqlPacket packet, long length, bool nullVal)
{
if (nullVal)
return new MySqlSingle(true);
if (length == -1)
{
byte[] b = new byte[4];
packet.Read(b, 0, 4);
return new MySqlSingle(BitConverter.ToSingle(b, 0));
}
return new MySqlSingle(Single.Parse(packet.ReadString(length),
CultureInfo.InvariantCulture));
}