iOS 판단 주민등록번호

#pragma  15 18 
+ (BOOL)checkUserIdCard: (NSString *) idCard
{
    NSString *pattern = @"(^[0-9]{15}$)|([0-9]{17}([0-9]|X)$)";
    NSPredicate *pred = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", pattern];
    BOOL isMatch = [pred evaluateWithObject:idCard];
    return isMatch;
}

//  
+ (BOOL)validateIDCardNumber:(NSString *)value {
    
    value = [value stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]];
    NSInteger length = 0;
    
    if (!value) {
        return NO;
    }else {
        length = value.length;
        if (length != 15 && length != 18) {
            return NO;
        }
    }
    
    //  
    NSArray *areasArray =@[@"11",@"12", @"13",@"14", @"15",@"21", @"22",@"23", @"31",@"32", @"33",@"34", @"35",@"36", @"37",@"41", @"42",@"43", @"44",@"45", @"46",@"50", @"51",@"52", @"53",@"54", @"61",@"62", @"63",@"64", @"65",@"71", @"81",@"82", @"91"];
    
    NSString *valueStart2 = [value substringToIndex:2];
    BOOL areaFlag = NO;
    
    for (NSString *areaCode in areasArray) {
        
        if ([areaCode isEqualToString:valueStart2]){
            areaFlag = YES;
            break;
        }
    }
    
    if (!areaFlag){
        return NO;
    }
    
    NSRegularExpression *regularExpression;
    NSUInteger numberofMatch;
    NSInteger year = 0;
    
    switch (length) {
        case 15:
            year = [value substringWithRange:NSMakeRange(6,2)].intValue +1900;
            
            if (year %4 ==0 || (year %100 ==0 && year %4 ==0)) {
                regularExpression = [[NSRegularExpression alloc]initWithPattern:@"^[1-9][0-9]{5}[0-9]{2}((01|03|05|07|08|10|12)(0[1-9]|[1-2][0-9]|3[0-1])|(04|06|09|11)(0[1-9]|[1-2][0-9]|30)|02(0[1-9]|[1-2][0-9]))[0-9]{3}$"
                                                                       options:NSRegularExpressionCaseInsensitive
                                                                         error:nil];// 
            }else {
                regularExpression = [[NSRegularExpression alloc]initWithPattern:@"^[1-9][0-9]{5}[0-9]{2}((01|03|05|07|08|10|12)(0[1-9]|[1-2][0-9]|3[0-1])|(04|06|09|11)(0[1-9]|[1-2][0-9]|30)|02(0[1-9]|1[0-9]|2[0-8]))[0-9]{3}$"
                                                                       options:NSRegularExpressionCaseInsensitive
                                                                         error:nil];// 
            }
            
            numberofMatch = [regularExpression numberOfMatchesInString:value
                                                              options:NSMatchingReportProgress
                                                                range:NSMakeRange(0, value.length)];
            if(numberofMatch > 0) {
                return YES;
            }else {
                return NO;
            }
            
        case 18:
            
            year = [value substringWithRange:NSMakeRange(6,4)].intValue;
            if (year %4 ==0 || (year %100 ==0 && year %4 ==0)) {
                regularExpression = [[NSRegularExpression alloc]initWithPattern:@"^[1-9][0-9]{5}19[0-9]{2}((01|03|05|07|08|10|12)(0[1-9]|[1-2][0-9]|3[0-1])|(04|06|09|11)(0[1-9]|[1-2][0-9]|30)|02(0[1-9]|[1-2][0-9]))[0-9]{3}[0-9Xx]$"
                                                                       options:NSRegularExpressionCaseInsensitive
                                                                         error:nil];// 
                
            }else {
                
                regularExpression = [[NSRegularExpression alloc]initWithPattern:@"^[1-9][0-9]{5}19[0-9]{2}((01|03|05|07|08|10|12)(0[1-9]|[1-2][0-9]|3[0-1])|(04|06|09|11)(0[1-9]|[1-2][0-9]|30)|02(0[1-9]|1[0-9]|2[0-8]))[0-9]{3}[0-9Xx]$"
                                                                       options:NSRegularExpressionCaseInsensitive
                                                                         error:nil];// 
                
            }
            
            numberofMatch = [regularExpression numberOfMatchesInString:value
                                                              options:NSMatchingReportProgress
                                                                range:NSMakeRange(0, value.length)];
            if(numberofMatch > 0) {
                
                int S = ([value substringWithRange:NSMakeRange(0,1)].intValue + [value substringWithRange:NSMakeRange(10,1)].intValue) *7 + ([value substringWithRange:NSMakeRange(1,1)].intValue + [value substringWithRange:NSMakeRange(11,1)].intValue) *9 + ([value substringWithRange:NSMakeRange(2,1)].intValue + [value  substringWithRange:NSMakeRange(12,1)].intValue) *10 + ([value  substringWithRange:NSMakeRange(3,1)].intValue + [value  substringWithRange:NSMakeRange(13,1)].intValue) *5 + ([value  substringWithRange:NSMakeRange(4,1)].intValue + [value  substringWithRange:NSMakeRange(14,1)].intValue) *8 + ([value  substringWithRange:NSMakeRange(5,1)].intValue + [value  substringWithRange:NSMakeRange(15,1)].intValue) *4 + ([value  substringWithRange:NSMakeRange(6,1)].intValue + [value  substringWithRange:NSMakeRange(16,1)].intValue) *2 + [value  substringWithRange:NSMakeRange(7,1)].intValue *1 + [value  substringWithRange:NSMakeRange(8,1)].intValue *6 + [value  substringWithRange:NSMakeRange(9,1)].intValue *3;
                
                int Y = S %11;
                
                NSString *M =@"F";
                
                NSString *JYM =@"10X98765432";
                
                M = [JYM substringWithRange:NSMakeRange(Y,1)];//  
                
                if ([M isEqualToString:[value substringWithRange:NSMakeRange(17,1)]]) {
                    
                    return YES;//  ID 
                    
                }else {
                    return NO;
                }
            }else {
                return NO;
            }
            
        default:
            return NO;
            
    }
}