Swift

Check if a MIME Entity is multipart/related

Demonstrates the Chilkat Mime.IsMultipartRelated method, which returns whether the Content-Type is exactly multipart/related. It takes no arguments.

Note: The file path is relative to the application's current working directory. Absolute paths may also be used. Supply the path to your own file.

Background: multipart/related signals that the parts belong together — typically an HTML body plus the inline images it references by Content-ID. Detecting it tells your code the non-primary parts are embedded resources, not standalone attachments to list.

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Swift


func chilkatTest() {
    var success: Bool = false

    //  Demonstrates the Mime.IsMultipartRelated method, which returns whether the Content-Type is multipart/related.  It takes no arguments.

    let mime = CkoMime()!
    success = mime.loadFile(path: "qa_data/multipart_message.eml")
    if success == false {
        print("\(mime.lastErrorText!)")
        return
    }

    if mime.isMultipartRelated() {
        print("This is a multipart/related entity.")
    }
    else {
        print("This is not multipart/related.")
    }


}