Swift

Save a MIME Body (Attachment) to a File

Demonstrates the Chilkat Mime.SaveBody method, which writes the decoded body bytes of the current part to a file. The only argument is the file path. Base64 and quoted-printable are decoded; MIME headers and multipart framing are not written.

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 direct way to extract a part's content to disk — saving an attachment or the payload of a part as its real, decoded bytes. Chilkat reverses the transfer encoding so the file contains the actual content, not its Base64 form. To reach a specific attachment in a multipart message, navigate to that part (for example with PartAt) before calling this.

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Swift


func chilkatTest() {
    var success: Bool = false

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

    //  Write the decoded body bytes of the current part to a file.  Base64 and quoted-printable are
    //  decoded; MIME headers and multipart framing are not written.  This is how you save an
    //  attachment or the raw content of a part.
    success = mime.saveBody(path: "qa_output/body_content.dat")
    if success == false {
        print("\(mime.lastErrorText!)")
        return
    }

    print("Body saved.")

}