Unicode Character from Code in String (Obj-C)

Question

I have a unicode hex value in an NSString - how do I output the character; here\'s what I have:

NSLog(@\"\\U0001D000\");

NSMutableString *hexString = [[NSMu         


        

Answer 1

If your character requires a surrogate pair (U+10000 to U+10FFFF), use CFStringGetSurrogatePairForLongCharacter to convert the Unicode code point into a UTF-16 surrogate pair, and then -initWithCharacters:length: to convert it into an NSString. For example:

UniChar c[2];
CFStringGetSurrogatePairForLongCharacter(0x1D000, c);
NSString *s = [[NSString alloc] initWithCharacters:c length:2];

For other characters (CFStringGetSurrogatePairForLongCharacter returns FALSE), you can skip the conversion and go straight to -initWithCharacters:length:.