Initial Phonetic Letter

gistfile1.m

static NSString *phonetic(NSString *sourceString) {
    NSMutableString *source = [sourceString mutableCopy];
    CFStringTransform((__bridge CFMutableStringRef) source, NULL, kCFStringTransformMandarinLatin, NO);
    return source;
}

static inline NSString *initialPhoneticLetter(NSString *string) {
    return [[[[phonetic([string substringToIndex:1]) substringToIndex:1] uppercaseString]
            stringByReplacingOccurrencesOfString:@"\u0100" withString:@"A"]
            stringByReplacingOccurrencesOfString:@"\u00c9" withString:@"E"];
}