Does Cocoa's CFHost support IDNs?

Question

WINAPI has methods to convert Unicode host names to Punycode. Does Cocoa/Cocoa Touch have a similar mechanism?

Answer 1

There's a little hack that works without any external libraries. Assuming you have a Unicode URL in theUrl, you can do:

NSURL *urlToLoad = nil;
NSPasteboard * pasteboard = [NSPasteboard pasteboardWithName:@"RandomPB"];
[pasteboard declareTypes:[NSArray arrayWithObject:NSStringPboardType] owner:nil];
@try
{
    if ([pasteboard setString:theUrl forType:NSStringPboardType])
        urlToLoad = [WebView URLFromPasteboard:pasteboard];
}
@catch (NSException * exception)
{
    urlToLoad = nil;
    NSLog(@"Can't create URL from string '%@'.", theUrl);
}
return urlToLoad;

Answer 2

Check out SBPunyCode (updated link)