setNickname.swift

#!/usr/bin/swift

import Contacts

func update()
{
    func makeNickname(name: String) -> String
    {
        let transform: UnicodeScalar -> String = { u in
            let c = Int(u.value)
            guard case 0xac00...0xd7a3 = c else { return "" }
            return String(UnicodeScalar((c - 0xac00) / 28 / 21 + 0x1100))
        }

        return name.unicodeScalars.map(transform).joinWithSeparator("")
    }

    let store = CNContactStore()
    let fetchRequest = CNContactFetchRequest(keysToFetch:[
            CNContactGivenNameKey, CNContactNicknameKey])
    let saveRequest = CNSaveRequest()
    var updateCount: Int = 0
    var mContact: CNMutableContact?

    do {
        try store.enumerateContactsWithFetchRequest(fetchRequest){
            contact, stop in
            let nickname = makeNickname(contact.givenName)
            guard nickname.utf8.count > 0 && nickname != contact.nickname else { 
                return
            }
            print("업데이트: \(nickname) -> \(contact.givenName)")
            mContact = contact.mutableCopy() as? CNMutableContact
            mContact?.nickname = nickname
            saveRequest.updateContact(mContact!)
            updateCount += 1
        }

        try store.executeSaveRequest(saveRequest)
        if updateCount > 0 {
            print("\(updateCount)개의 연락처 별명을 업데이트했습니다.")
        } else {
            print("업데이트할 연락처를 찾지 못했습니다.")
        }

    } catch {
        print("Error")
    }
}

update()