Get IMAP Attachment Filenames

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Demonstrates the Chilkat Imap.GetMailAttachFilename method, which returns the filename of an attachment. The first argument is the Email and the second is the zero-based attachment index. This example fetches only the message headers and lists the attachment filenames.

func chilkatTest() {
    var success: Bool = false

    //  Demonstrates the Imap.GetMailAttachFilename method, which returns the filename of an
    //  attachment.  The 1st argument is the Email and the 2nd is the zero-based attachment index.

    let imap = CkoImap()!

    imap.ssl = true
    imap.port = 993

    success = imap.connect(hostname: "imap.example.com")
    if success == false {
        print("\(imap.lastErrorText!)")
        return
    }

    success = imap.login(login: "user@example.com", password: "myPassword")
    if success == false {
        print("\(imap.lastErrorText!)")
        return
    }

    success = imap.selectMailbox(mailbox: "Inbox")
    if success == false {
        print("\(imap.lastErrorText!)")
        return
    }

    //  Fetch only the message headers.  Attachment bodies are NOT downloaded, but the ckx-imap-*
    //  metadata describing the attachments is present, so the attachment info methods still work.
    var headersOnly: Bool = true
    var useUid: Bool = false
    var seqNum: Int = 1
    let email = CkoEmail()!
    success = imap.fetchEmail(headerOnly: headersOnly, msgId: seqNum, bUid: useUid, email: email)
    if success == false {
        print("\(imap.lastErrorText!)")
        return
    }

    //  Loop over the attachments and print each filename.
    var numAttach: Int = imap.getMailNumAttach(email: email).intValue
    print("Attachments: \(numAttach)")
    var i: Int
    for i = 0; i <= numAttach - 1; i++ {
        //  GetMailAttachFilename returns a string, so assign it to a string variable.
        var fname: String? = imap.getMailAttachFilename(email: email, attachIndex: i)
        if imap.lastMethodSuccess == false {
            print("\(imap.lastErrorText!)")
            return
        }

        print("\(fname!)")
    }

    success = imap.disconnect()
    if success == false {
        print("\(imap.lastErrorText!)")
        return
    }


}