Convert charset name to NSStringEncoding

Question

Given a charset string, such as "utf-8", "iso-8859-1", "us-ascii" etc, is there any built-in way to get the appropriate NSStringEncoding in Cocoa?

Right now I'm looking at just building a NSDictionary containing a canonicalized version of the name mapped to the NSStringEncoding, then having a lookup mechanism that canonicalizes the input in the same way. But is there really no way to get NSUTF8StringEncoding given the string "UTF-8", etc?

Answer 1

I don't think there is any built-in way of achieving this. I think what you suggest - building a dictionary with the values - is a sensible way to go here. There aren't that many encodings so it should be quite trivial, and probably quicker than trying to find a built-in way of doing it.

Answer 2

You have to go through CoreFoundation.

CFStringConvertIANACharSetNameToEncoding
CFStringConvertEncodingToNSStringEncoding