(Swift 2) Convert a File's Character Encoding from UTF-8 to UFT-8-BOM

To add a utf-8 BOM to a file is just a matter of prepending these 3 bytes to the file: 0xEF 0xBB 0xBF.

This may be difficult in some programming languages, or it may be trivial in either. Therefore, the Chilkat solution you see here might be helpful, or in a language such as C++, the Chilkat solution isn't really necessary because it's easy to do yourself.

Chilkat Downloads for the Swift Programming Language MAC OS X (Cocoa) Objective-C/Swift Libs iOS Objective-C/Swift Libs

func chilkatTest() {
    // This example assumes the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    let charset = CkoCharset()

    charset.FromCharset = "utf-8"
    charset.ToCharset = "bom-utf-8"

    var success: Bool = charset.ConvertFile("qa_data/txt/helloWorld.txt", destPath: "qa_output/helloWorldBom.txt")
    if success != true {
        print("\(charset.LastErrorText)")
        return
    }

    print("Success.")

}