(Swift) Add Text from a StringBuilder to a ZIP Using AddSb

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This example demonstrates how to use the AddSb method to add text from a StringBuilder object as a file entry within a ZIP archive.

The text is converted to bytes using the specified character encoding before being stored in the ZIP archive.

This method is useful for dynamically generating text files entirely in memory without creating temporary files on disk.

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func chilkatTest() {
    var success: Bool = false

    let zip = CkoZip()!

    success = zip.newZip("stringBuilderData.zip")
    if success == false {
        print("\(zip.lastErrorText!)")
        return
    }

    // Create a StringBuilder containing text data.
    let sb = CkoStringBuilder()!

    sb.appendLine("Line 1: Hello World!", crlf: true)
    sb.appendLine("Line 2: This text came from a StringBuilder.", crlf: true)

    // Add the StringBuilder contents as a UTF-8 text file
    // stored in the ZIP archive as "docs/readme.txt".
    success = zip.addSb("docs/readme.txt", sb: sb, charset: "utf-8")
    if success == false {
        print("\(zip.lastErrorText!)")
        return
    }

    // Write the ZIP archive to disk and close it.
    success = zip.writeAndClose()
    if success == false {
        print("\(zip.lastErrorText!)")
        return
    }

    print("ZIP archive created successfully.")

}