public string ReadString()
{
var len = ReadVUInt64();
if (len == 0) return null;
len--;
if (len > int.MaxValue) throw new InvalidDataException($"Reading String length overflowed with {len}");
var l = (int)len;
if (l == 0) return "";
ReserveCharBuf(l);
var res = CharBuf;
var i = 0;
while (i < l)
{
if (Pos != End)
{
var b = Buf[Pos];
if (b < 0x80)
{
res[i] = (char)b;
i++;
Pos++;
continue;
}
}
var c = ReadVUInt64();
if (c > 0xffff)
{
if (c > 0x10ffff) throw new InvalidDataException($"Reading String unicode value overflowed with {c}");
c -= 0x10000;
res[i] = (char)((c >> 10) + 0xD800);
i++;
res[i] = (char)((c & 0x3FF) + 0xDC00);
i++;
}
else
{
res[i] = (char)c;
i++;
}
}
return new string(res, 0, l);
}
internal static TableFieldInfo Load(AbstractBufferedReader reader, IFieldHandlerFactory fieldHandlerFactory, string tableName)
{
var name = reader.ReadString();
var handlerName = reader.ReadString();
var configuration = reader.ReadByteArray();
var fieldHandler = fieldHandlerFactory.CreateFromName(handlerName, configuration, FieldHandlerOptions.None);
if (fieldHandler == null) throw new BTDBException(string.Format("FieldHandlerFactory did not created handler {0} in {1}.{2}", handlerName, tableName, name));
return new TableFieldInfo(name, fieldHandler);
}