Object - c 의 정규 표현 식 중 하나

비교적 상용 하 는 예

//  
+ (BOOL) validateEmail:(NSString *)email
{
    NSString *emailRegex = @"[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,4}";
    NSPredicate *emailTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", emailRegex];
    return [emailTest evaluateWithObject:email];
}


//      
+ (BOOL) validateMobile:(NSString *)mobile
{
    //    13， 15，18  ，   \d     
    NSString *phoneRegex = @"^((13[0-9])|(15[^4,\\D])|(18[0,0-9]))\\d{8}$";
    NSPredicate *phoneTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",phoneRegex];
    return [phoneTest evaluateWithObject:mobile];
}


//     
+ (BOOL) validateCarNo:(NSString *)carNo
{
    NSString *carRegex = @"^[\u4e00-\u9fa5]{1}[a-zA-Z]{1}[a-zA-Z_0-9]{4}[a-zA-Z_0-9_\u4e00-\u9fa5]$";
    NSPredicate *carTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",carRegex];
    NSLog(@"carTest is %@",carTest);
    return [carTest evaluateWithObject:carNo];
}


//  
+ (BOOL) validateCarType:(NSString *)CarType
{
    NSString *CarTypeRegex = @"^[\u4E00-\u9FFF]+$";
    NSPredicate *carTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",CarTypeRegex];
    return [carTest evaluateWithObject:CarType];
}


//   
+ (BOOL) validateUserName:(NSString *)name
{
    NSString *userNameRegex = @"^[A-Za-z0-9]{6,20}+$";
    NSPredicate *userNamePredicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",userNameRegex];
    BOOL B = [userNamePredicate evaluateWithObject:name];
    return B;
}


//  
+ (BOOL) validatePassword:(NSString *)passWord
{
    NSString *passWordRegex = @"^[a-zA-Z0-9]{6,20}+$";
    NSPredicate *passWordPredicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",passWordRegex];
    return [passWordPredicate evaluateWithObject:passWord];
}


//  
+ (BOOL) validateNickname:(NSString *)nickname
{
    NSString *nicknameRegex = @"^[\u4e00-\u9fa5]{4,8}$";
    NSPredicate *passWordPredicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",nicknameRegex];
    return [passWordPredicate evaluateWithObject:nickname];
}


//    
+ (BOOL) validateIdentityCard: (NSString *)identityCard
{
    BOOL flag;
    if (identityCard.length <= 0) {
        flag = NO;
        return flag;
    }
    NSString *regex2 = @"^(\\d{14}|\\d{17})(\\d|[xX])$";
    NSPredicate *identityCardPredicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",regex2];
    return [identityCardPredicate evaluateWithObject:identityCard];
}

           
- (BOOL)isDigitalOrAlpha : (NSString *) text {
    for (int i = 0; i < text.length; i++) {
        unichar uc = [text characterAtIndex: i];
        if (!isascii(uc)) {
            return NO;
        }
    }
    return YES;
}

               （    ）
-(NSUInteger) asciiLengthOfString: (NSString *) text {
    NSUInteger asciiLength = 0;
    for (NSUInteger i = 0; i < text.length; i++) {
        unichar uc = [text characterAtIndex: i];
        asciiLength += isascii(uc) ? 1 : 2;
    }
    return asciiLength;
}