public static List <RoomBuffer> GetAllRooms(string fileName)
{
var dataBuffer = new RoomBuffer();
var list = new List <RoomBuffer>();
Func <RoomBuffer> newFunc = () => new RoomBuffer();
// Yes, yes. Copied Code. How horrible. There's really no good alternative to DllImport-interfacing code though. Dynamic doesn't work,
// templates don't work, etc. So. Given that the MajorMUD database format will never change in the future (it's been dead 10 years!),
// I'm ok with copied code. Huzzah.
byte[] posBlock = new byte[128];
char[] keyBuffer = fileName.ToCharArray();
int bufferLength = 1544; //System.Runtime.InteropServices.Marshal.SizeOf(dataBuffer);
int status = Btrieve.BTRCALL(Btrieve.BOPEN, posBlock, ref dataBuffer, ref bufferLength, keyBuffer, (ushort)keyBuffer.Length, 0);
if (status == 0)
{
status = Btrieve.BTRCALL(Btrieve.BGETFIRST, posBlock, ref dataBuffer, ref bufferLength, keyBuffer, (ushort)keyBuffer.Length, 0);
if (status == 0)
{
list.Add(dataBuffer);
}
else
{
throw new InvalidOperationException(ErrorCode(status));
}
// Get subsequent records
while (status == 0) // BReturnCodes.END_OF_FILE or an error will occur
{
dataBuffer = newFunc();
status = Btrieve.BTRCALL(Btrieve.BGETNEXT, posBlock, ref dataBuffer, ref bufferLength, keyBuffer, (ushort)keyBuffer.Length, 0);
if (status == 0)
{
list.Add(dataBuffer);
}
else if (status != 9)
{
throw new InvalidOperationException(ErrorCode(status));
}
}
}
else
{
throw new InvalidOperationException(ErrorCode(status));
}
return(list);
}
public static extern short BTRCALL(ushort operation,
[MarshalAs(UnmanagedType.LPArray, SizeConst = 128)] byte[] posBlk,
[MarshalAs(UnmanagedType.Struct, SizeConst = 255)] ref RoomBuffer databuffer,
ref int dataLength,
[MarshalAs(UnmanagedType.LPArray, SizeConst = 255)] char[] keyBffer,
ushort keyLength, ushort keyNum);
