Swift string encoding

Question

My string has & and I want to replace it with the percentage encoding (%26). This is just an example. There can be any escape character.
I tried this but it is not replacing & with %26 :

password.text?.addingPercentEncoding(withAllowedCharacters: .urlHostAllowed)

Its an allowed character in the url, if you need to encode that then have to create your own character set or replace manually — Tj3n, Mar 31 '17 at 07:14
May be this will helps you http://stackoverflow.com/a/43054388/6433023 — Nirav D, Mar 31 '17 at 12:16

score 0 · Answer 1 · answered Mar 31 '17 at 07:13

How about this short string extension:

extension String
{
    func encode(_ chars: String) -> String
    {
        let forbidden = CharacterSet(charactersIn: chars)
        return self.addingPercentEncoding(withAllowedCharacters: forbidden.inverted) ?? self
    }
}

print("I can't read ENCODED text".encode("CDENO"))
// will print: I can't read %45%4E%43%4F%44%45%44 text

print("Command & Conquer".encode("&"))
// will print: Command %26 Conquer

Swift string encoding

1 Answers1