Re: Semi-automatical update of article count in nnfolder?

Re: Semi-automatical update of article count in nnfolder?

[Kai Großjohann]

Simon Josefsson <jas@extundo.com> writes:

> I'm not sure.  For nnimap, the IMAP server really know the proper
> data, so nnimap simply asks the server and frobs some Gnus internal
> data structures, but nnfolder doesn't really know this
> authoritatively, does it?

In principle, it has the data.  So it just got to remember, is all.
I guess it now forgets.

> It could iterate through the entire file and count articles, but
> that seems sort of slow.  And counting lines in the NOV file seems
> less robust.  Hm.

nnfolder could store the necessary data in the active file; I guess
that translates to the nnfolder-group-alist variable somewhere.

But I haven't looked at the code closely.

How does nnimap do it?  (I mean where is the entry point into the
code where I need to start reading?)
-- 
file-error; Data: (Opening input file no such file or directory ~/.signature)

Re: Semi-automatical update of article count in nnfolder?

[Simon Josefsson]

kai.grossjohann@gmx.net (Kai Großjohann) writes:

> How does nnimap do it?  (I mean where is the entry point into the
> code where I need to start reading?)

(Warning: This code is so ugly it may make you go blind.)

gnus-fixup-nnimap-unread-after-getting-new-news is invoked via
gnus-setup-news-hook, and looks like:

(defun gnus-fixup-nnimap-unread-after-getting-new-news ()
  (let (server group info)
    (mapatoms
     (lambda (sym)
       (when (and (setq group (symbol-name sym))
		  (gnus-group-entry group)
		  (setq info (symbol-value sym)))
	 (gnus-sethash group (cons (nth 2 info) (cdr (gnus-group-entry group)))
		       gnus-newsrc-hashtb)))
     (if (boundp 'nnimap-mailbox-info)
	 (symbol-value 'nnimap-mailbox-info)
       (make-vector 1 0)))))

I.e., it iterates through all nnimap groups and forces the active info
to be what the variable nnimap-mailbox-info says, which is updated by
nnimap.

Re: Semi-automatical update of article count in nnfolder?

[Kai Großjohann]

Simon Josefsson <jas@extundo.com> writes:

> kai.grossjohann@gmx.net (Kai Großjohann) writes:
>
>> How does nnimap do it?  (I mean where is the entry point into the
>> code where I need to start reading?)
>
> (Warning: This code is so ugly it may make you go blind.)
>
> gnus-fixup-nnimap-unread-after-getting-new-news is invoked via
> gnus-setup-news-hook, and looks like:

(Why is it called "after-getting-new-news" but invoked from
"setup-news-hook" instead of "after-getting-new-news-hook"?)

> (defun gnus-fixup-nnimap-unread-after-getting-new-news ()
>   (let (server group info)
>     (mapatoms
>      (lambda (sym)
>        (when (and (setq group (symbol-name sym))
> 		  (gnus-group-entry group)
> 		  (setq info (symbol-value sym)))
> 	 (gnus-sethash group (cons (nth 2 info) (cdr (gnus-group-entry group)))
> 		       gnus-newsrc-hashtb)))
>      (if (boundp 'nnimap-mailbox-info)
> 	 (symbol-value 'nnimap-mailbox-info)
>        (make-vector 1 0)))))
>
> I.e., it iterates through all nnimap groups and forces the active info
> to be what the variable nnimap-mailbox-info says, which is updated by
> nnimap.

Well...  How about making a new backend function
nnchoke-request-active-info, the corresponding
gnus-request-active-info front-end function, and then the
getting-new-news code looks whether the backends support that
function, and if so, does the above?

That would still be rather ugly, but it would be generalized to other
backends.

What do you think?
-- 
file-error; Data: (Opening input file no such file or directory ~/.signature)