NSNumber to NSString of binary

[coulls]

Hi All,

I have a simple question that I seem to be tying myself up in knots over.

I'll answer the "why" first, as I'm sure it'll come up: I'm parsing NMEA data for an AIVDM message, which has 6bit binary encoded as ASCII gibberish. I need to reverse the process, then break down the bits into chunks to get things like ship name, bearing, speed, etc.

Now, having explained the why, here's the question:
Is there a Cocoa way to take an NSNumber and convert this to a string representing the binary digits, or should I stop trying to use straight Cocoa and just hack it in C?

I tried looking at NSNumberFormatter, but that didn't have the binary option, so is there another way?

Thanks,

Jase

[FlyingDiver]

I don't recall seeing anything for generating binary (0s and 1s) strings, so if you really need that you'll probably have to write it yourself.

Also, if you're getting that NMEA data through some sort of serial data connection, I'd probably start with an NSData buffer rather than an intermediate NSNumber representation. Converting from the byte-oriented data stream to NSNumber objects seems like extra overhead.

joe

[coulls]

Hi there,

thanks - I will try that. Will post solution if I find it...

Cheers

Jason