Swift

Convert String to GSM 03.38

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Demonstrates how to convert a string to the GSM character set. For more information about the GSM character set, see GSM Character Set

Note: This example requires Chilkat v9.5.0.79 or greater. Support for the GSM character set was added in v9.5.0.79.

Swift

func chilkatTest() {
    var success: Bool = false

    // Demonstrates how to convert a string to the GSM character set byte representation.

    var s: String? = "support@chilkatsoft.com, {abc}"

    // In the above string the a-z letters have the same 1-byte values in the GSM character set.
    // The '@' character is the 0x00 byte in GSM.
    // The curly brace chars are 2-bytes each in GSM -- each beginning with the 0x1B escape char.
    // The '.', ' ', and ',' are the same in GSM as us-ascii.

    // Let's convert to GSM.

    // bdGsm will contain the GSM bytes.
    let bdGsm = CkoBinData()!

    // Append the string to bdGsm.  The 2nd arg "gsm" tells AppendString to
    // convert the incoming string to the gsm byte representation.
    success = bdGsm.appendString(str: s, charset: "gsm")

    // Let's examine what we have in hex:
    print("\(bdGsm.getEncoded(encoding: "hex")!)")

    // The result is:  737570706F7274006368696C6B6174736F66742E636F6D2C201B286162631B29

    // Save the GSM bytes to a file.
    success = bdGsm.writeFile(path: "qa_output/gsm.txt")

}