(Swift) Scan for Emails with Attachments and Save Attachments to Files

Scan for emails with attachments and save attachments.

Note: This example requires Chilkat v11.0.0 or greater.

Chilkat Downloads for the Swift Programming Language MAC OS X (Cocoa) Objective-C/Swift Libs iOS Objective-C/Swift Libs

func chilkatTest() {
    var success: Bool = false

    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    let imap = CkoImap()!

    // Connect to an IMAP server.
    // Use TLS
    imap.ssl = true
    imap.port = 993
    success = imap.connect("imap.example.com")
    if success == false {
        print("\(imap.lastErrorText!)")
        return
    }

    // Login
    success = imap.login("myLogin", password: "myPassword")
    if success == false {
        print("\(imap.lastErrorText!)")
        return
    }

    // Select an IMAP mailbox
    success = imap.selectMailbox("Inbox")
    if success == false {
        print("\(imap.lastErrorText!)")
        return
    }

    // We can choose to fetch UIDs or sequence numbers.
    var fetchUids: Bool = true

    // Get the message IDs of all the emails in the mailbox
    let messageSet = CkoMessageSet()!
    success = imap.queryMbx("ALL", bUid: fetchUids, msgSet: messageSet)
    if success == false {
        print("\(imap.lastErrorText!)")
        return
    }

    // Fetch the email headers into a bundle object:
    let bundle = CkoEmailBundle()!
    var headersOnly: Bool = true
    success = imap.fetchMsgSet(headersOnly, msgSet: messageSet, bundle: bundle)
    if success == false {
        print("\(imap.lastErrorText!)")
        return
    }

    // Scan for emails with attachments, and save the attachments
    // to a sub-directory.
    let fullEmail = CkoEmail()!
    let emailHeader = CkoEmail()!
    var i: Int = 0
    while i < bundle.messageCount.intValue {
        // The bundle contains email headers..
        bundle.email(at: i, email: emailHeader)

        // Does this email have attachments?
        // Use GetMailNumAttach because the attachments
        // are not actually in the email object because
        // we only downloaded headers.
        var numAttach: Int = imap.getMailNumAttach(emailHeader).intValue

        if numAttach > 0 {
            // Download the entire email and save the
            // attachments. (Remember, we 
            // need to download the entire email because
            // only the headers were previously downloaded.

            // The ckx-imap-uid header field is added when
            // headers are downloaded.  This makes it possible
            // to get the UID from the email object.
            var uidStr: String? = emailHeader.getHeaderField("ckx-imap-uid")
            var uid: Int = [uidStr intValue]

            success = imap.fetchEmail(false, msgId: uid, bUid: true, email: fullEmail)
            if success == false {
                print("\(imap.lastErrorText!)")
                return
            }

            success = fullEmail.saveAllAttachments("attachmentsDir")

            var j: Int
            for j = 0; j <= numAttach - 1; j++ {
                var filename: String? = imap.getMailAttachFilename(emailHeader, attachIndex: j)
                print("\(filename!)")
            }

        }

        i = i + 1
    }

    // Disconnect from the IMAP server.
    success = imap.disconnect()

}