Swift

Fetch an IMAP Message's MIME into a BinData

Demonstrates the Chilkat Imap.FetchSingleBd method, which downloads one message's MIME bytes into a BinData object. If the second argument (bUid) is true, the first argument is a UID; otherwise it is a sequence number. This example downloads message 1's MIME into a BinData and prints the byte count.

Background: This is the binary counterpart to FetchSingleAsMime (which returns a string). A BinData holds raw bytes, so it preserves the message exactly — the right choice when you plan to write the MIME straight to a file, hash it, or hand it to an API expecting a byte buffer, with no charset conversion that could alter binary content.

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Swift


func chilkatTest() {
    var success: Bool = false

    //  Demonstrates the Imap.FetchSingleBd method, which downloads one message's MIME bytes into a
    //  BinData object.  If the 2nd argument (bUid) is true, the 1st argument is a UID; otherwise
    //  it is a sequence number.

    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
    }

    //  Download message sequence number 1's MIME bytes into a BinData.  bUid = false.
    let bdMime = CkoBinData()!
    success = imap.fetchSingleBd(msgId: 1, bUid: false, mimeData: bdMime)
    if success == false {
        print("\(imap.lastErrorText!)")
        return
    }

    print("MIME size (bytes) = \(bdMime.numBytes.intValue)")

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


}