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Re: [bug-mailutils] figuring out mailuils...

From: Sergey Poznyakoff
Subject: Re: [bug-mailutils] figuring out mailuils...
Date: Tue, 12 May 2009 13:58:19 +0300

Alfred M. Szmidt <address@hidden> ha escrit:

> I am finding the documentation a bit lacking over what each function
> does, specially on a protocol basis.

Yes, that's true.  The docs leave a lot to be desired.

> Does for example mu_mailbox_get_message remove messages when fetching
> from a POP3 server?

No, it does not.  It only returns a message, as its name suggests,
nothing more.

Another important thing is that all mu_.* functions work the same way,
no matter what the type of the mailbox is (UNIX mbox, pop3, imap4,

> Does mu_attribute_set_deleted touched all messages when doing POP3?

Mu_attribute_set_deleted sets the `deleted' bit on the attribute object
given as its argument.  That is, it operates on a single message.

> Is there some simple overview of how the protocol side is implemented?

Unfortunately, currently there is not.  Feel free to ask for any piece
of info you might need.

> Where would the best place be to add some kind of a UIDL list (if a
> server supports it)--not file location, but codewise--of messages
> retrived, so one doesn't fetch duplicate messages?

I'd place it in the move_message function, like that:

move_message (mu_mailbox_t src, mu_mailbox_t dst, size_t msgno)
  int rc;
  mu_message_t msg;
  char uidbuf[256];
  if ((rc = mu_mailbox_get_message (src, msgno, &msg)) != 0)
      fprintf (stderr, _("Cannot read message %lu: %s\n"),
                                      (unsigned long) msgno, mu_strerror (rc));
      return rc;
  if ((rc = mu_mailbox_append_message (dst, msg)) != 0)
      fprintf (stderr, _("Cannot append message %lu: %s\n"),
                                      (unsigned long) msgno, mu_strerror (rc));
      return rc;
/* <-- Here it goes --> */
  mu_message_get_uidl (msg, uidbuf, sizeof(uidbuf), NULL);

It is supposed that save_uid() does the main work.  


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