I’m translating my app to different languages, how could I get the alphabet based on the localization? Could be Latin, Cyrillic, etc.

CodePudding user response：

You have to provide Localizable.strings base file to you project, which consist of your different text for different origins:

Like for default language:

"Hello World!" = "Hello World!";

and for like in Latin language:

"Hello World!" = "salve mundi!";

CodePudding user response：

Try this:

import UIKit // Or Foundation


if let alphabetCharacterSet = Locale(identifier: "ru").exemplarCharacterSet?.intersection(CharacterSet.lowercaseLetters) {
    print(alphabetCharacterSet.characters())
}

extension CharacterSet {
    func characters() -> [Character] {
        // A Unicode scalar is any Unicode code point in the range U 0000 to U D7FF inclusive or U E000 to U 10FFFF inclusive.
        return codePoints().compactMap { UnicodeScalar($0) }.map { Character($0) }
    }

    func codePoints() -> [Int] {
        var result: [Int] = []
        var plane = 0
        // following documentation at https://developer.apple.com/documentation/foundation/nscharacterset/1417719-bitmaprepresentation
        for (i, w) in bitmapRepresentation.enumerated() {
            let k = i % 0x2001
            if k == 0x2000 {
                // plane index byte
                plane = Int(w) << 13
                continue
            }
            let base = (plane   k) << 3
            for j in 0 ..< 8 where w & 1 << j != 0 {
                result.append(base   j)
            }
        }
        return result
    }
}