Get IMAP Attachment Sizes

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Demonstrates the Chilkat Imap.GetMailAttachSize method, which returns the size in bytes of an attachment. The first argument is the Email and the second is the zero-based attachment index. This example fetches headers only and prints each attachment's name and size.

func chilkatTest() {
    var success: Bool = false

    //  Demonstrates the Imap.GetMailAttachSize method, which returns the size in bytes 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
    }

    var numAttach: Int = imap.getMailNumAttach(email: email).intValue
    var i: Int
    for i = 0; i <= numAttach - 1; i++ {
        var fname: String? = imap.getMailAttachFilename(email: email, attachIndex: i)
        if imap.lastMethodSuccess == false {
            print("\(imap.lastErrorText!)")
            return
        }

        var sz: Int = imap.getMailAttachSize(email: email, attachIndex: i).intValue
        print("\(fname!): \(sz) bytes")
    }

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


}