How to Validate International Passport number in swift

Question

I am new in swift and I need to validate International passport. Is there is any way to validate it.

you wrote regular expression and it is the same for all programming languages. If you want to know how use it in swift - read, for example, [here](https://www.hackingwithswift.com/articles/108/how-to-use-regular-expressions-in-swift) — Vadim Nikolaev, Dec 20 '19 at 06:40
Does this answer your question? [Regex for Passport Number](https://stackoverflow.com/questions/40647728/regex-for-passport-number) and [How to use regex in swift.](https://stackoverflow.com/questions/27880650/swift-extract-regex-matches) — dahiya_boy, Dec 20 '19 at 07:08

score 1 · Answer 1 · answered Dec 20 '19 at 06:48

try use NSPredicate:

  func isValidPassport(passportStr:String) -> Bool {        
    let passportRegEx = "^(?!^0+$)[a-zA-Z0-9]{3,20}$"

    let passportPred = NSPredicate(format:"SELF MATCHES %@", passportRegEx)
    return passportPred.evaluate(with: passportStr)
  }

Swift earlier than 3.0:

func isValidPassport(passportStr:String) -> Bool {

    let passportRegEx = "^(?!^0+$)[a-zA-Z0-9]{3,20}$"

    let passportPred = NSPredicate(format:"SELF MATCHES %@", passportRegEx)
    return passportPred.evaluate(with: passportStr)
}

Swift earlier than 1.2:

class func isValidPassport(passportStr:String) -> Bool {

    let passportRegEx = "^(?!^0+$)[a-zA-Z0-9]{3,20}$"

    if let passportPred = NSPredicate(format:"SELF MATCHES %@", passportRegEx) {
        return passportPred.evaluateWithObject(passportStr)
    }
    return false
}

score 0 · Answer 2 · answered Dec 20 '19 at 06:49

It's very simple. You can check like below

extension String {

    func isValidPassport() -> Bool {
        let PASSPORT_REG_EX = "^(?!^0+$)[a-zA-Z0-9]{3,20}$"
        let passport = NSPredicate(format:"SELF MATCHES %@", PASSPORT_REG_EX)

        if (self.count >= 6) {
            return passport.evaluate(with: self)
        } else {
            return false
        }
    }
}

Take a String Extension and reuse rest of your App

    let passport = "AS345501"
    passport.isValidPassport()

Note: How to validate a passport?

UK passport numbers consist of 9 digits but used to consist of 6 digits and a letter.

Happy coding...

How to Validate International Passport number in swift

2 Answers2