Swift

Attach a File to a Multipart MIME Entity

Demonstrates the Chilkat Mime.AppendPartFromFile method, which reads a local file, creates an attachment part, and appends it. The only argument is the file path; the content headers are chosen from the filename extension.

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

Background: This is the one-call way to add an attachment: Chilkat reads the file, infers its Content-Type from the extension, base64-encodes binary content, and appends it as a child part — typically inside a multipart/mixed. It is the building block behind adding attachments to an email, saving you from constructing the part and setting its headers by hand.

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Swift


func chilkatTest() {
    var success: Bool = false

    //  Demonstrates the Mime.AppendPartFromFile method, which reads a local file, creates an attachment
    //  part, and appends it.  The only argument is the file path; the content headers are chosen from
    //  the filename extension.

    let mime = CkoMime()!
    success = mime.newMultipartMixed()
    if success == false {
        print("\(mime.lastErrorText!)")
        return
    }

    //  A message body part.
    let bodyPart = CkoMime()!
    success = bodyPart.setBody(fromPlainText: "Please see the attached files.")
    if success == false {
        print("\(bodyPart.lastErrorText!)")
        return
    }

    success = mime.appendPart(mime: bodyPart)
    if success == false {
        print("\(mime.lastErrorText!)")
        return
    }

    //  Attach files directly.
    success = mime.appendPart(fromFile: "qa_data/report.pdf")
    if success == false {
        print("\(mime.lastErrorText!)")
        return
    }

    success = mime.appendPart(fromFile: "qa_data/photo.jpg")
    if success == false {
        print("\(mime.lastErrorText!)")
        return
    }

    print("Number of parts: \(mime.numParts.intValue)")

}