Java

Get the Number of IMAP Attachments

Demonstrates the Chilkat Imap.GetMailNumAttach method, which returns the number of ordinary attachments on a message. The only argument is the Email. This example fetches only the headers and reports the attachment count.

Background: A header-only fetch downloads no attachment bodies, so the Email object's own downloaded-attachment count can be 0. GetMailNumAttach instead reads the ckx-imap-numAttach metadata, giving the true count — which is what you want when building a message list that shows whether each message has attachments.

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Java

import com.chilkatsoft.*;

public class ChilkatExample {

  static {
    try {
        System.loadLibrary("chilkat");
    } catch (UnsatisfiedLinkError e) {
      System.err.println("Native code library failed to load.\n" + e);
      System.exit(1);
    }
  }

  public static void main(String argv[])
  {
    boolean success = false;

    //  Demonstrates the Imap.GetMailNumAttach method, which returns the number of ordinary
    //  attachments on a message.  The only argument is the Email.

    CkImap imap = new CkImap();

    imap.put_Ssl(true);
    imap.put_Port(993);

    success = imap.Connect("imap.example.com");
    if (success == false) {
        System.out.println(imap.lastErrorText());
        return;
        }

    success = imap.Login("user@example.com","myPassword");
    if (success == false) {
        System.out.println(imap.lastErrorText());
        return;
        }

    success = imap.SelectMailbox("Inbox");
    if (success == false) {
        System.out.println(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.
    boolean headersOnly = true;
    boolean useUid = false;
    int seqNum = 1;
    CkEmail email = new CkEmail();
    success = imap.FetchEmail(headersOnly,seqNum,useUid,email);
    if (success == false) {
        System.out.println(imap.lastErrorText());
        return;
        }

    int numAttach = imap.GetMailNumAttach(email);
    System.out.println("This message has " + numAttach + " attachment(s).");

    success = imap.Disconnect();
    if (success == false) {
        System.out.println(imap.lastErrorText());
        return;
        }
  }
}