| (Swift) UU Encoding and DecodingDemonstrates how to UU encode and decode. 
 
func chilkatTest() {
    // This example assumes the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.
    let crypt = CkoCrypt2()!
    var s1: String?
    var s2: String?
    var s3: String?
    s1 = "This string is to be UU encoded"
    crypt.uuMode = "666"
    crypt.uuFilename = "something.txt"
    // UU encode:
    s2 = crypt.encode(s1, charset: "ansi", encoding: "uu")
    // Note: Call crypt.Encode instead of crypt.EncodeString
    // to UU encode binary bytes (i.e. non-text binary data).
    print("\(s2!)")
    // UU decode:
    let crypt2 = CkoCrypt2()!
    s3 = crypt2.decode(s2, charset: "ansi", encoding: "uu")
    // Note: Likewise, call crypt.Decode to decode non-text binary data.
    print("\(s3!)")
    // Show the file permissions mode and filename found
    // in the UU encoded data:
    print("UuMode = \(crypt2.uuMode!)")
    print("UuFilename = \(crypt2.uuFilename!)")
}
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