(Swift 3,4,5...) Re-Encode (How to convert encodings)

Demonstrates how to convert a string from one encoding to another.

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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? = "This is a test / = abc 123"

    // The ReEncode method converts a string from one encoding
    // to another.
    // Valid encodings are "url", "base64", "qp", "hex", "ansi", "modbase64", "base64url", "base32", "base58",
    // and any of the encodings listed here:  http://cknotes.com/chilkat-binary-encoding-list

    // Use "ansi" for an unencoded ANSI string.

    // Encode to URL-encoding:
    var s2: String? = crypt.reEncode(s1, fromEncoding: "ansi", toEncoding: "url")
    print("\(s2!)")

    // Convert from URL-encoding to base64:
    var b64: String?
    b64 = crypt.reEncode(s2, fromEncoding: "url", toEncoding: "base64")
    print("\(b64!)")

    // Convert from base64 to hex:
    var hex: String?
    hex = crypt.reEncode(b64, fromEncoding: "base64", toEncoding: "hex")
    print("\(hex!)")

}