How to test for valid file name in Mac OS X

Question

Anyone know how to test if a string is a valid file name in Mac OS X, other than trying to create file with that name?

The issue I'm having is that sometimes, a file name can be too large. OSX has a byte limit for filenames and with unicode characters you can't just check the length of the string since they can be more than 1 byte.

Answer 1

I think the only invalid character (except control chars) on OSX is the colon - so you simply have to test if the new filename contains colons.

Answer 2

Use NSFileManager.

-- Updated:

Try this:

if([testPath compare: [NSString stringWithUTF8String:[testPath fileSystemRepresentation]]] == NSOrderedSame) {
    //testPath is a valid Path
}

No guarantees on what it will do though.