converting from Big 5 and GuoBiao encodings

FROM : Daniel Child
DATE : Fri Jan 11 04:22:28 2008

Hi,

I am trying to build a generic parser for various files I expect to 
encounter. To get the file in the form of a string, I was going to use:

NSString *fileAsString = [[NSString alloc] initWithContentsOfFile: 
sourcePath
                   encoding: NSUTF8StringEncoding
                   error: &error];

That works assuming the encoidng is UTF8. But what if it is Big 5 or 
GuoBiao? I couldn't find an equivalent encoding in
the documentation.

Thanks.

Daniel