How to remove special character \u{e2} from string

Question

I have following code in func application(_ application: UIApplication, continue userActivity: NSUserActivity, restorationHandler: @escaping ([UIUserActivityRestoring]?) -> Void) -> Bool

var phoneNumber: String?
if let callIntent = interaction.intent as? INStartVideoCallIntent {
    phoneNumber = callIntent.contacts?.first?.personHandle?.value
} else if let callIntent = interaction.intent as? INStartAudioCallIntent {
     phoneNumber = callIntent.contacts?.first?.personHandle?.value
}

Phone number has only 10 digit. But when I check the count it shows 12 Digits

When I print the string

I have tried

phoneNumber?.trimmingCharacters(in: .whitespacesAndNewlines).count phoneNumber?.trimmingCharacters(in: .symbols).count

but it still returns 12

Please help

I linked that one because it suggests that the char is actually a newline character — Scriptable, May 02 '19 at 10:52
Have you tried with this code: phoneNumber.text?.replacingOccurrences(of: "\\p{Cf}", with: "", options: .regularExpression) — Bhavik Modi, May 02 '19 at 10:54
If i check it in a playground it is the â character. and because there is a char after it at the end, trimming that one won't work — Scriptable, May 02 '19 at 10:54
To remove scalar characters with: var newString = "" for char in phoneNumber.unicodeScalars{ if char.isASCII{ newString += String(char) } } — Bhavik Modi, May 02 '19 at 10:56
@BhavikModi Yes it is working but What I need is to encounter all the non ascii characters — Prashant Tukadiya, May 02 '19 at 10:56
Please show the output of `print(Array(phoneNumber!.unicodeScalars))` to clarify what character really is in your string. — Martin R, May 02 '19 at 10:57
@MartinR it is `["\u{202D}", "1", "2", "3", "4", "5", "6", "7", "8", "9", "\u{202C}", "0"]` — Prashant Tukadiya, May 02 '19 at 10:58
This answer https://stackoverflow.com/a/53442008/1187415 to the question to which @Scriptable linked in the first comment solves the problem. And that is actually copied from https://stackoverflow.com/q/47623828/1187415. — Martin R, May 02 '19 at 11:07
@MartinR Thank you :) My question is will it work for all the scenarios like this ? — Prashant Tukadiya, May 02 '19 at 11:10

score 1 · Accepted Answer · answered May 02 '19 at 11:00

Thank you every one for your help. You are so kind

I am able to find the invalid character using

phoneNumber?.map{$0.unicodeScalars.allSatisfy{$0.isASCII}}

and it returns

Optional<Array<Bool>>
  ▿ some : 12 elements
    - 0 : false
    - 1 : true
    - 2 : true
    - 3 : true
    - 4 : true
    - 5 : true
    - 6 : true
    - 7 : true
    - 8 : true
    - 9 : true
    - 10 : false
    - 11 : true

I am able to fix this issue using one line

phoneNumber?.filter{$0.unicodeScalars.allSatisfy{$0.isASCII}}

and Count is 10

using

phoneNumber?.filter{$0.unicodeScalars.allSatisfy{$0.isASCII}}.count

Hope it is helpful to others :)

score 0 · Answer 2 · edited May 02 '19 at 10:59

0

extension String {
    var specialCharRemove: String {
       let characters = Set("1234567890+-=().!_")
       return self.filter {characters.contains($0)}
    }
}

Use:

let str = "12345.!". specialCharRemove

Result:

12345

edited May 02 '19 at 10:59

LinusGeffarth

27,197
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answered May 02 '19 at 10:56

Mukesh R Asodariya

1
5

How to remove special character \u{e2} from string

2 Answers2