1 ;;; gnus-int.el --- backend interface functions for Gnus
3 ;; Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004
4 ;; 2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
6 ;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
9 ;; This file is part of GNU Emacs.
11 ;; GNU Emacs is free software: you can redistribute it and/or modify
12 ;; it under the terms of the GNU General Public License as published by
13 ;; the Free Software Foundation, either version 3 of the License, or
14 ;; (at your option) any later version.
16 ;; GNU Emacs is distributed in the hope that it will be useful,
17 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
18 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 ;; GNU General Public License for more details.
21 ;; You should have received a copy of the GNU General Public License
22 ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
28 (eval-when-compile (require 'cl
))
34 (autoload 'gnus-run-hook-with-args
"gnus-util")
35 (autoload 'gnus-agent-expire
"gnus-agent")
36 (autoload 'gnus-agent-regenerate-group
"gnus-agent")
37 (autoload 'gnus-agent-read-servers-validate-native
"gnus-agent")
38 (autoload 'gnus-agent-possibly-synchronize-flags-server
"gnus-agent")
40 (defcustom gnus-open-server-hook nil
41 "Hook called just before opening connection to the news server."
45 (defcustom gnus-after-set-mark-hook nil
46 "Hook called just after marks are set in a group."
50 (defcustom gnus-before-update-mark-hook nil
51 "Hook called just before marks are updated in a group."
55 (defcustom gnus-server-unopen-status nil
56 "The default status if the server is not able to open.
57 If the server is covered by Gnus agent, the possible values are
58 `denied', set the server denied; `offline', set the server offline;
59 nil, ask user. If the server is not covered by Gnus agent, set the
63 :type
'(choice (const :tag
"Ask" nil
)
64 (const :tag
"Deny server" denied
)
65 (const :tag
"Unplug Agent" offline
)))
67 (defvar gnus-internal-registry-spool-current-method nil
68 "The current method, for the registry.")
71 (defun gnus-server-opened (gnus-command-method)
72 "Check whether a connection to GNUS-COMMAND-METHOD has been opened."
73 (unless (eq (gnus-server-status gnus-command-method
)
75 (when (stringp gnus-command-method
)
76 (setq gnus-command-method
(gnus-server-to-method gnus-command-method
)))
77 (funcall (inline (gnus-get-function gnus-command-method
'server-opened
))
78 (nth 1 gnus-command-method
))))
80 (defun gnus-status-message (gnus-command-method)
81 "Return the status message from GNUS-COMMAND-METHOD.
82 If GNUS-COMMAND-METHOD is a string, it is interpreted as a group
83 name. The method this group uses will be queried."
84 (let ((gnus-command-method
85 (if (stringp gnus-command-method
)
86 (gnus-find-method-for-group gnus-command-method
)
87 gnus-command-method
)))
88 (funcall (gnus-get-function gnus-command-method
'status-message
)
89 (nth 1 gnus-command-method
))))
92 ;;; Server Communication
95 (defun gnus-start-news-server (&optional confirm
)
96 "Open a method for getting news.
97 If CONFIRM is non-nil, the user will be asked for an NNTP server."
99 (if gnus-current-select-method
100 ;; Stream is already opened.
104 ;; Read server name with completion.
105 (setq gnus-nntp-server
106 (gnus-completing-read "NNTP server"
107 (cons gnus-nntp-server
108 gnus-secondary-servers
)
109 nil gnus-nntp-server
)))
111 (when (and gnus-nntp-server
112 (stringp gnus-nntp-server
)
113 (not (string= gnus-nntp-server
"")))
114 (setq gnus-select-method
115 (cond ((or (string= gnus-nntp-server
"")
116 (string= gnus-nntp-server
"::"))
117 (list 'nnspool
(system-name)))
118 ((string-match "^:" gnus-nntp-server
)
119 (list 'nnmh gnus-nntp-server
120 (list 'nnmh-directory
121 (file-name-as-directory
123 (substring gnus-nntp-server
1) "~/")))
124 (list 'nnmh-get-new-mail nil
)))
126 (list 'nntp gnus-nntp-server
)))))
128 (setq how
(car gnus-select-method
))
132 (gnus-message 5 "Looking up local news spool..."))
135 (gnus-message 5 "Looking up mh spool..."))
138 (setq gnus-current-select-method gnus-select-method
)
139 (gnus-run-hooks 'gnus-open-server-hook
)
141 ;; Partially validate agent covered methods now that the
142 ;; gnus-select-method is known.
145 ;; NOTE: This is here for one purpose only. By validating
146 ;; the current select method, it converts the old 5.10.3,
147 ;; and earlier, format to the current format. That enables
148 ;; the agent code within gnus-open-server to function
150 (gnus-agent-read-servers-validate-native gnus-select-method
))
153 ;; gnus-open-server-hook might have opened it
154 (gnus-server-opened gnus-select-method
)
155 (gnus-open-server gnus-select-method
)
159 "%s (%s) open error: '%s'. Continue? "
160 (car gnus-select-method
) (cadr gnus-select-method
)
161 (gnus-status-message gnus-select-method
)))
162 (gnus-error 1 "Couldn't open server on %s"
163 (nth 1 gnus-select-method
))))))
165 (defun gnus-check-group (group)
166 "Try to make sure that the server where GROUP exists is alive."
167 (let ((method (gnus-find-method-for-group group
)))
168 (or (gnus-server-opened method
)
169 (gnus-open-server method
))))
171 (defun gnus-check-server (&optional method silent
)
172 "Check whether the connection to METHOD is down.
173 If METHOD is nil, use `gnus-select-method'.
174 If it is down, start it up (again)."
175 (let ((method (or method gnus-select-method
))
177 ;; Transform virtual server names into select methods.
178 (when (stringp method
)
179 (setq method
(gnus-server-to-method method
)))
180 (if (gnus-server-opened method
)
181 ;; The stream is already opened.
185 (gnus-message 5 "Opening %s server%s..." (car method
)
186 (if (equal (nth 1 method
) "") ""
187 (format " on %s" (nth 1 method
)))))
188 (gnus-run-hooks 'gnus-open-server-hook
)
190 (setq result
(gnus-open-server method
))
194 "Opening %s server%s...%s" (car method
)
195 (if (equal (nth 1 method
) "") ""
196 (format " on %s" (nth 1 method
)))
200 (nnheader-get-report-string (car method
))))))))))
202 (defun gnus-get-function (method function
&optional noerror
)
203 "Return a function symbol based on METHOD and FUNCTION."
204 ;; Translate server names into methods.
206 (error "Attempted use of a nil select method"))
207 (when (stringp method
)
208 (setq method
(gnus-server-to-method method
)))
209 ;; Check cache of constructed names.
210 (let* ((method-sym (if gnus-agent
211 (inline (gnus-agent-get-function method
))
213 (method-fns (get method-sym
'gnus-method-functions
))
214 (func (let ((method-fnlist-elt (assq function method-fns
)))
215 (unless method-fnlist-elt
216 (setq method-fnlist-elt
218 (intern (format "%s-%s" method-sym function
))))
219 (put method-sym
'gnus-method-functions
220 (cons method-fnlist-elt method-fns
)))
221 (cdr method-fnlist-elt
))))
222 ;; Maybe complain if there is no function.
223 (unless (fboundp func
)
225 (error "Trying to require a method that doesn't exist"))
226 (require (car method
))
227 (when (not (fboundp func
))
230 (error "No such function: %s" func
))))
235 ;;; Interface functions to the backends.
238 (defun gnus-method-denied-p (method)
239 (eq (nth 1 (assoc method gnus-opened-servers
))
242 (defvar gnus-backend-trace t
)
244 (defun gnus-open-server (gnus-command-method)
245 "Open a connection to GNUS-COMMAND-METHOD."
246 (when (stringp gnus-command-method
)
247 (setq gnus-command-method
(gnus-server-to-method gnus-command-method
)))
248 (when gnus-backend-trace
249 (with-current-buffer (get-buffer-create "*gnus trace*")
250 (buffer-disable-undo)
251 (goto-char (point-max))
252 (insert (format-time-string "%H:%M:%S")
253 (format " %S\n" gnus-command-method
))))
254 (let ((elem (assoc gnus-command-method gnus-opened-servers
))
255 (server (gnus-method-to-server-name gnus-command-method
)))
256 ;; If this method was previously denied, we just return nil.
257 (if (eq (nth 1 elem
) 'denied
)
259 (gnus-message 1 "Denied server %s" server
)
262 (let* ((open-server-function
263 (gnus-get-function gnus-command-method
'open-server
))
266 (funcall open-server-function
267 (nth 1 gnus-command-method
)
268 (nthcdr 2 gnus-command-method
))
270 (gnus-message 1 "Unable to open server %s due to: %s"
271 server
(error-message-string err
))
274 (gnus-message 1 "Quit trying to open server %s" server
)
277 ;; If this hasn't been opened before, we add it to the list.
279 (setq elem
(list gnus-command-method nil
)
280 gnus-opened-servers
(cons elem gnus-opened-servers
)))
281 ;; Set the status of this server.
285 (if (eq open-server-function
#'nnagent-open-server
)
286 ;; The agent's backend has a "special" status
290 (gnus-agent-method-p gnus-command-method
))
292 (gnus-server-unopen-status
293 ;; Set the server's status to the unopen
294 ;; status. If that status is offline,
295 ;; recurse to open the agent's backend.
296 (setq open-offline
(eq gnus-server-unopen-status
'offline
))
297 gnus-server-unopen-status
)
298 ((not gnus-batch-mode
)
299 (setq open-offline t
)
302 ;; This agentized server was still denied
305 ;; This unagentized server must be denied
308 ;; NOTE: I MUST set the server's status to offline before this
309 ;; recursive call as this status will drive the
310 ;; gnus-get-function (called above) to return the agent's
313 ;; Recursively open this offline server to perform the
314 ;; open-server function of the agent's backend.
315 (let ((gnus-server-unopen-status 'denied
))
316 ;; Bind gnus-server-unopen-status to avoid recursively
317 ;; prompting with "go offline?". This is only a concern
318 ;; when the agent's backend fails to open the server.
319 (gnus-open-server gnus-command-method
))
320 (when (and (eq (cadr elem
) 'ok
) gnus-agent
321 (gnus-agent-method-p gnus-command-method
))
323 (gnus-agent-possibly-synchronize-flags-server
324 gnus-command-method
)))
327 (defun gnus-close-server (gnus-command-method)
328 "Close the connection to GNUS-COMMAND-METHOD."
329 (when (stringp gnus-command-method
)
330 (setq gnus-command-method
(gnus-server-to-method gnus-command-method
)))
331 (funcall (gnus-get-function gnus-command-method
'close-server
)
332 (nth 1 gnus-command-method
)))
334 (defun gnus-request-list (gnus-command-method)
335 "Request the active file from GNUS-COMMAND-METHOD."
336 (when (stringp gnus-command-method
)
337 (setq gnus-command-method
(gnus-server-to-method gnus-command-method
)))
338 (funcall (gnus-get-function gnus-command-method
'request-list
)
339 (nth 1 gnus-command-method
)))
341 (defun gnus-finish-retrieve-group-infos (gnus-command-method infos data
)
342 "Read and update infos from GNUS-COMMAND-METHOD."
343 (when (stringp gnus-command-method
)
344 (setq gnus-command-method
(gnus-server-to-method gnus-command-method
)))
345 (funcall (gnus-get-function gnus-command-method
'finish-retrieve-group-infos
)
346 (nth 1 gnus-command-method
)
349 (defun gnus-retrieve-group-data-early (gnus-command-method infos
)
350 "Start early async retrival of data from GNUS-COMMAND-METHOD."
351 (when (stringp gnus-command-method
)
352 (setq gnus-command-method
(gnus-server-to-method gnus-command-method
)))
353 (funcall (gnus-get-function gnus-command-method
'retrieve-group-data-early
)
354 (nth 1 gnus-command-method
)
357 (defun gnus-request-list-newsgroups (gnus-command-method)
358 "Request the newsgroups file from GNUS-COMMAND-METHOD."
359 (when (stringp gnus-command-method
)
360 (setq gnus-command-method
(gnus-server-to-method gnus-command-method
)))
361 (funcall (gnus-get-function gnus-command-method
'request-list-newsgroups
)
362 (nth 1 gnus-command-method
)))
364 (defun gnus-request-newgroups (date gnus-command-method
)
365 "Request all new groups since DATE from GNUS-COMMAND-METHOD."
366 (when (stringp gnus-command-method
)
367 (setq gnus-command-method
(gnus-server-to-method gnus-command-method
)))
368 (let ((func (gnus-get-function gnus-command-method
'request-newgroups t
)))
370 (funcall func date
(nth 1 gnus-command-method
)))))
372 (defun gnus-request-regenerate (gnus-command-method)
373 "Request a data generation from GNUS-COMMAND-METHOD."
374 (when (stringp gnus-command-method
)
375 (setq gnus-command-method
(gnus-server-to-method gnus-command-method
)))
376 (funcall (gnus-get-function gnus-command-method
'request-regenerate
)
377 (nth 1 gnus-command-method
)))
379 (defun gnus-request-compact-group (group)
380 (let* ((method (gnus-find-method-for-group group
))
381 (gnus-command-method method
)
383 (funcall (gnus-get-function gnus-command-method
384 'request-compact-group
)
385 (gnus-group-real-name group
)
386 (nth 1 gnus-command-method
) t
)))
389 (defun gnus-request-compact (gnus-command-method)
390 "Request groups compaction from GNUS-COMMAND-METHOD."
391 (when (stringp gnus-command-method
)
392 (setq gnus-command-method
(gnus-server-to-method gnus-command-method
)))
393 (funcall (gnus-get-function gnus-command-method
'request-compact
)
394 (nth 1 gnus-command-method
)))
396 (defun gnus-request-group (group &optional dont-check gnus-command-method info
)
397 "Request GROUP. If DONT-CHECK, no information is required."
398 (let ((gnus-command-method
399 (or gnus-command-method
(inline (gnus-find-method-for-group group
)))))
400 (when (stringp gnus-command-method
)
401 (setq gnus-command-method
402 (inline (gnus-server-to-method gnus-command-method
))))
403 (funcall (inline (gnus-get-function gnus-command-method
'request-group
))
404 (gnus-group-real-name group
) (nth 1 gnus-command-method
)
408 (defun gnus-list-active-group (group)
409 "Request active information on GROUP."
410 (let ((gnus-command-method (gnus-find-method-for-group group
))
411 (func 'list-active-group
))
412 (when (gnus-check-backend-function func group
)
413 (funcall (gnus-get-function gnus-command-method func
)
414 (gnus-group-real-name group
) (nth 1 gnus-command-method
)))))
416 (defun gnus-request-group-description (group)
417 "Request a description of GROUP."
418 (let ((gnus-command-method (gnus-find-method-for-group group
))
419 (func 'request-group-description
))
420 (when (gnus-check-backend-function func group
)
421 (funcall (gnus-get-function gnus-command-method func
)
422 (gnus-group-real-name group
) (nth 1 gnus-command-method
)))))
424 (defun gnus-request-group-articles (group)
425 "Request a list of existing articles in GROUP."
426 (let ((gnus-command-method (gnus-find-method-for-group group
))
427 (func 'request-group-articles
))
428 (when (gnus-check-backend-function func group
)
429 (funcall (gnus-get-function gnus-command-method func
)
430 (gnus-group-real-name group
) (nth 1 gnus-command-method
)))))
432 (defun gnus-close-group (group)
433 "Request the GROUP be closed."
434 (let ((gnus-command-method (inline (gnus-find-method-for-group group
))))
435 (funcall (gnus-get-function gnus-command-method
'close-group
)
436 (gnus-group-real-name group
) (nth 1 gnus-command-method
))))
438 (defun gnus-retrieve-headers (articles group
&optional fetch-old
)
439 "Request headers for ARTICLES in GROUP.
440 If FETCH-OLD, retrieve all headers (or some subset thereof) in the group."
441 (let ((gnus-command-method (gnus-find-method-for-group group
)))
443 ((and gnus-use-cache
(numberp (car articles
)))
444 (gnus-cache-retrieve-headers articles group fetch-old
))
445 ((and gnus-agent
(gnus-online gnus-command-method
)
446 (gnus-agent-method-p gnus-command-method
))
447 (gnus-agent-retrieve-headers articles group fetch-old
))
449 (funcall (gnus-get-function gnus-command-method
'retrieve-headers
)
450 articles
(gnus-group-real-name group
)
451 (nth 1 gnus-command-method
) fetch-old
)))))
453 (defun gnus-retrieve-articles (articles group
)
454 "Request ARTICLES in GROUP."
455 (let ((gnus-command-method (gnus-find-method-for-group group
)))
456 (funcall (gnus-get-function gnus-command-method
'retrieve-articles
)
457 articles
(gnus-group-real-name group
)
458 (nth 1 gnus-command-method
))))
460 (defun gnus-retrieve-groups (groups gnus-command-method
)
461 "Request active information on GROUPS from GNUS-COMMAND-METHOD."
462 (when (stringp gnus-command-method
)
463 (setq gnus-command-method
(gnus-server-to-method gnus-command-method
)))
464 (funcall (gnus-get-function gnus-command-method
'retrieve-groups
)
465 groups
(nth 1 gnus-command-method
)))
467 (defun gnus-request-type (group &optional article
)
468 "Return the type (`post' or `mail') of GROUP (and ARTICLE)."
469 (let ((gnus-command-method (gnus-find-method-for-group group
)))
470 (if (not (gnus-check-backend-function
471 'request-type
(car gnus-command-method
)))
473 (funcall (gnus-get-function gnus-command-method
'request-type
)
474 (gnus-group-real-name group
) article
))))
476 (defun gnus-request-update-group-status (group status
)
477 "Change the status of a group.
478 Valid statuses include `subscribe' and `unsubscribe'."
479 (let ((gnus-command-method (gnus-find-method-for-group group
)))
480 (if (not (gnus-check-backend-function
481 'request-update-group-status
(car gnus-command-method
)))
484 (gnus-get-function gnus-command-method
'request-update-group-status
)
485 (gnus-group-real-name group
) status
486 (nth 1 gnus-command-method
)))))
488 (defun gnus-request-set-mark (group action
)
489 "Set marks on articles in the back end."
490 (let ((gnus-command-method (gnus-find-method-for-group group
)))
491 (if (not (gnus-check-backend-function
492 'request-set-mark
(car gnus-command-method
)))
494 (funcall (gnus-get-function gnus-command-method
'request-set-mark
)
495 (gnus-group-real-name group
) action
496 (nth 1 gnus-command-method
))
497 (gnus-run-hook-with-args gnus-after-set-mark-hook group action
))))
499 (defun gnus-request-update-mark (group article mark
)
500 "Allow the back end to change the mark the user tries to put on an article."
501 (let ((gnus-command-method (gnus-find-method-for-group group
)))
502 (if (not (gnus-check-backend-function
503 'request-update-mark
(car gnus-command-method
)))
505 (gnus-run-hook-with-args gnus-before-update-mark-hook group article mark
)
506 (funcall (gnus-get-function gnus-command-method
'request-update-mark
)
507 (gnus-group-real-name group
) article mark
))))
509 (defun gnus-request-article (article group
&optional buffer
)
510 "Request the ARTICLE in GROUP.
511 ARTICLE can either be an article number or an article Message-ID.
512 If BUFFER, insert the article in that group."
513 (let ((gnus-command-method (gnus-find-method-for-group group
)))
514 (funcall (gnus-get-function gnus-command-method
'request-article
)
515 article
(gnus-group-real-name group
)
516 (nth 1 gnus-command-method
) buffer
)))
518 (defun gnus-request-thread (header)
519 "Request the headers in the thread containing the article specified by HEADER."
520 (let ((gnus-command-method (gnus-find-method-for-group gnus-newsgroup-name
)))
521 (funcall (gnus-get-function gnus-command-method
'request-thread
)
524 (defun gnus-warp-to-article ()
525 "Warps from an article in a virtual group to the article in its
526 real group. Does nothing on a real group."
528 (let ((gnus-command-method
529 (gnus-find-method-for-group gnus-newsgroup-name
)))
530 (when (gnus-check-backend-function
531 'warp-to-article
(car gnus-command-method
))
532 (funcall (gnus-get-function gnus-command-method
'warp-to-article
)))))
534 (defun gnus-request-head (article group
)
535 "Request the head of ARTICLE in GROUP."
536 (let* ((gnus-command-method (gnus-find-method-for-group group
))
537 (head (gnus-get-function gnus-command-method
'request-head t
))
543 (gnus-cache-request-article article group
))
544 (setq res
(cons group article
)
546 ;; Check the agent cache.
547 ((gnus-agent-request-article article group
)
548 (setq res
(cons group article
)
550 ;; Use `head' function.
552 (setq res
(funcall head article
(gnus-group-real-name group
)
553 (nth 1 gnus-command-method
))))
554 ;; Use `article' function.
556 (setq res
(gnus-request-article article group
)
559 (with-current-buffer nntp-server-buffer
560 (goto-char (point-min))
561 (when (search-forward "\n\n" nil t
)
562 (delete-region (1- (point)) (point-max)))
563 (nnheader-fold-continuation-lines)))
566 (defun gnus-request-body (article group
)
567 "Request the body of ARTICLE in GROUP."
568 (let* ((gnus-command-method (gnus-find-method-for-group group
))
569 (head (gnus-get-function gnus-command-method
'request-body t
))
575 (gnus-cache-request-article article group
))
576 (setq res
(cons group article
)
578 ;; Check the agent cache.
579 ((gnus-agent-request-article article group
)
580 (setq res
(cons group article
)
582 ;; Use `head' function.
584 (setq res
(funcall head article
(gnus-group-real-name group
)
585 (nth 1 gnus-command-method
))))
586 ;; Use `article' function.
588 (setq res
(gnus-request-article article group
)
591 (with-current-buffer nntp-server-buffer
592 (goto-char (point-min))
593 (when (search-forward "\n\n" nil t
)
594 (delete-region (point-min) (1- (point))))))
597 (defun gnus-request-post (gnus-command-method)
598 "Post the current buffer using GNUS-COMMAND-METHOD."
599 (when (stringp gnus-command-method
)
600 (setq gnus-command-method
(gnus-server-to-method gnus-command-method
)))
601 (funcall (gnus-get-function gnus-command-method
'request-post
)
602 (nth 1 gnus-command-method
)))
604 (defun gnus-request-expunge-group (group gnus-command-method
)
605 "Expunge GROUP, which is removing articles that have been marked as deleted."
606 (when (stringp gnus-command-method
)
607 (setq gnus-command-method
(gnus-server-to-method gnus-command-method
)))
608 (funcall (gnus-get-function gnus-command-method
'request-expunge-group
)
609 (gnus-group-real-name group
)
610 (nth 1 gnus-command-method
)))
612 (defun gnus-request-scan (group gnus-command-method
)
613 "Request a SCAN being performed in GROUP from GNUS-COMMAND-METHOD.
614 If GROUP is nil, all groups on GNUS-COMMAND-METHOD are scanned."
615 (let ((gnus-command-method
616 (if group
(gnus-find-method-for-group group
) gnus-command-method
))
617 (gnus-inhibit-demon t
)
618 (mail-source-plugged gnus-plugged
))
619 (when (or gnus-plugged
620 (not (gnus-agent-method-p gnus-command-method
)))
621 (setq gnus-internal-registry-spool-current-method gnus-command-method
)
622 (funcall (gnus-get-function gnus-command-method
'request-scan
)
623 (and group
(gnus-group-real-name group
))
624 (nth 1 gnus-command-method
)))))
626 (defun gnus-request-update-info (info gnus-command-method
)
627 (when (gnus-check-backend-function
628 'request-update-info
(car gnus-command-method
))
629 (when (stringp gnus-command-method
)
630 (setq gnus-command-method
(gnus-server-to-method gnus-command-method
)))
631 (funcall (gnus-get-function gnus-command-method
'request-update-info
)
632 (gnus-group-real-name (gnus-info-group info
)) info
633 (nth 1 gnus-command-method
))))
635 (defsubst gnus-request-marks
(info gnus-command-method
)
636 "Request that GNUS-COMMAND-METHOD update INFO."
637 (when (stringp gnus-command-method
)
638 (setq gnus-command-method
(gnus-server-to-method gnus-command-method
)))
639 (when (gnus-check-backend-function
640 'request-marks
(car gnus-command-method
))
641 (let ((group (gnus-info-group info
)))
642 (and (funcall (gnus-get-function gnus-command-method
643 'request-update-info
)
644 (gnus-group-real-name group
)
645 info
(nth 1 gnus-command-method
))
646 ;; If the minimum article number is greater than 1, then all
647 ;; smaller article numbers are known not to exist; we'll
648 ;; artificially add those to the 'read range.
649 (let* ((active (gnus-active group
))
652 (let* ((range (if (= min
2) 1 (cons 1 (1- min
))))
653 (read (gnus-info-read info
))
654 (new-read (gnus-range-add read
(list range
))))
655 (gnus-info-set-read info new-read
)))
658 (defun gnus-request-expire-articles (articles group
&optional force
)
659 (let* ((gnus-command-method (gnus-find-method-for-group group
))
660 (gnus-inhibit-demon t
)
663 (gnus-get-function gnus-command-method
'request-expire-articles
)
664 articles
(gnus-group-real-name group
) (nth 1 gnus-command-method
)
666 (when (and gnus-agent
667 (gnus-agent-method-p gnus-command-method
))
668 (let ((expired-articles (gnus-sorted-difference articles not-deleted
)))
669 (when expired-articles
670 (gnus-agent-expire expired-articles group
'force
))))
673 (defun gnus-request-move-article (article group server accept-function
674 &optional last move-is-internal
)
675 (let* ((gnus-command-method (gnus-find-method-for-group group
))
676 (result (funcall (gnus-get-function gnus-command-method
677 'request-move-article
)
678 article
(gnus-group-real-name group
)
679 (nth 1 gnus-command-method
) accept-function
680 last move-is-internal
)))
681 (when (and result gnus-agent
682 (gnus-agent-method-p gnus-command-method
))
683 (gnus-agent-unfetch-articles group
(list article
)))
686 (defun gnus-request-accept-article (group &optional gnus-command-method last
688 ;; Make sure there's a newline at the end of the article.
689 (when (stringp gnus-command-method
)
690 (setq gnus-command-method
(gnus-server-to-method gnus-command-method
)))
691 (when (and (not gnus-command-method
)
693 (setq gnus-command-method
(or (gnus-find-method-for-group group
)
694 (gnus-group-name-to-method group
))))
695 (goto-char (point-max))
699 (let ((message-options message-options
))
700 (message-options-set-recipient)
702 (message-narrow-to-head)
703 (let ((mail-parse-charset message-default-charset
))
704 (mail-encode-encoded-word-buffer)))
705 (message-encode-message-body)))
706 (let ((gnus-command-method (or gnus-command-method
707 (gnus-find-method-for-group group
)))
710 (gnus-get-function gnus-command-method
'request-accept-article
)
711 (if (stringp group
) (gnus-group-real-name group
) group
)
712 (cadr gnus-command-method
)
714 (when (and gnus-agent
(gnus-agent-method-p gnus-command-method
))
715 (gnus-agent-regenerate-group group
(list (cdr result
))))
718 (defun gnus-request-replace-article (article group buffer
&optional no-encode
)
720 (let ((message-options message-options
))
721 (message-options-set-recipient)
723 (message-narrow-to-head)
724 (let ((mail-parse-charset message-default-charset
))
725 (mail-encode-encoded-word-buffer)))
726 (message-encode-message-body)))
727 (let* ((func (car (gnus-group-name-to-method group
)))
728 (result (funcall (intern (format "%s-request-replace-article" func
))
729 article
(gnus-group-real-name group
) buffer
)))
730 (when (and gnus-agent
(gnus-agent-method-p gnus-command-method
))
731 (gnus-agent-regenerate-group group
(list article
)))
734 (defun gnus-request-associate-buffer (group)
735 (let ((gnus-command-method (gnus-find-method-for-group group
)))
736 (funcall (gnus-get-function gnus-command-method
'request-associate-buffer
)
737 (gnus-group-real-name group
))))
739 (defun gnus-request-restore-buffer (article group
)
740 "Request a new buffer restored to the state of ARTICLE."
741 (let ((gnus-command-method (gnus-find-method-for-group group
)))
742 (funcall (gnus-get-function gnus-command-method
'request-restore-buffer
)
743 article
(gnus-group-real-name group
)
744 (nth 1 gnus-command-method
))))
746 (defun gnus-request-create-group (group &optional gnus-command-method args
)
747 (when (stringp gnus-command-method
)
748 (setq gnus-command-method
(gnus-server-to-method gnus-command-method
)))
749 (let ((gnus-command-method
750 (or gnus-command-method
(gnus-find-method-for-group group
))))
751 (funcall (gnus-get-function gnus-command-method
'request-create-group
)
752 (gnus-group-real-name group
) (nth 1 gnus-command-method
) args
)))
754 (defun gnus-request-delete-group (group &optional force
)
755 (let* ((gnus-command-method (gnus-find-method-for-group group
))
757 (funcall (gnus-get-function gnus-command-method
'request-delete-group
)
758 (gnus-group-real-name group
) force
(nth 1 gnus-command-method
))))
760 (gnus-cache-delete-group group
)
761 (gnus-agent-delete-group group
))
764 (defun gnus-request-rename-group (group new-name
)
765 (let* ((gnus-command-method (gnus-find-method-for-group group
))
767 (funcall (gnus-get-function gnus-command-method
'request-rename-group
)
768 (gnus-group-real-name group
)
769 (gnus-group-real-name new-name
) (nth 1 gnus-command-method
))))
771 (gnus-cache-rename-group group new-name
)
772 (gnus-agent-rename-group group new-name
))
775 (defun gnus-close-backends ()
776 ;; Send a close request to all backends that support such a request.
777 (let ((methods gnus-valid-select-methods
)
778 (gnus-inhibit-demon t
)
779 func gnus-command-method
)
780 (while (setq gnus-command-method
(pop methods
))
781 (when (fboundp (setq func
(intern
782 (concat (car gnus-command-method
)
786 (defun gnus-asynchronous-p (gnus-command-method)
787 (let ((func (gnus-get-function gnus-command-method
'asynchronous-p t
)))
791 (defun gnus-remove-denial (gnus-command-method)
792 (when (stringp gnus-command-method
)
793 (setq gnus-command-method
(gnus-server-to-method gnus-command-method
)))
794 (let* ((elem (assoc gnus-command-method gnus-opened-servers
))
795 (status (cadr elem
)))
796 ;; If this hasn't been opened before, we add it to the list.
797 (when (eq status
'denied
)
798 ;; Set the status of this server.
799 (setcar (cdr elem
) 'closed
))))
803 ;;; gnus-int.el ends here