iOS HTML characters decoding

String Utils

+ (NSString*)decodeHTMLCharacters:(NSString*)sampleUnFormatterString{
    if (sampleUnFormatterString == nil || sampleUnFormatterString.length == 0) {
        return sampleUnFormatterString;
    }
    NSString *sampleUnFormatterStringCopy =sampleUnFormatterString;
    NSString *regString = [[NSString alloc]initWithFormat:@"&#[0123456789]{2,4};"];
    NSError *error=nil;
    NSRegularExpression *regex = [NSRegularExpression
                                  regularExpressionWithPattern:regString
                                  options:0
                                  error:&error];
    NSArray* matches = [regex matchesInString:sampleUnFormatterString options:0 range: NSMakeRange(0, [sampleUnFormatterString length])];
    for (NSTextCheckingResult* match in matches) {
        NSString* matchText = [sampleUnFormatterString substringWithRange:[match range]];
        NSString *strippedText = [matchText stringByReplacingOccurrencesOfString:@"&#" withString:@""];
        strippedText = [strippedText stringByReplacingOccurrencesOfString:@";" withString:@""];
        strippedText = [NSString stringWithFormat:@"%C",(unichar)strippedText.integerValue];
        sampleUnFormatterStringCopy= [sampleUnFormatterStringCopy stringByReplacingOccurrencesOfString:matchText withString:strippedText];
    }
    NSLog(@"Formatted String %@",sampleUnFormatterStringCopy);
    return sampleUnFormatterStringCopy;
    
}