1 ;;; gnus-int.el --- backend interface functions for Gnus
3 ;; Copyright (C) 1996-2011 Free Software Foundation, Inc.
5 ;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
8 ;; This file is part of GNU Emacs.
10 ;; GNU Emacs is free software: you can redistribute it and/or modify
11 ;; it under the terms of the GNU General Public License as published by
12 ;; the Free Software Foundation, either version 3 of the License, or
13 ;; (at your option) any later version.
15 ;; GNU Emacs is distributed in the hope that it will be useful,
16 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 ;; GNU General Public License for more details.
20 ;; You should have received a copy of the GNU General Public License
21 ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
27 (eval-when-compile (require 'cl
))
33 (autoload 'gnus-run-hook-with-args
"gnus-util")
34 (autoload 'gnus-agent-expire
"gnus-agent")
35 (autoload 'gnus-agent-regenerate-group
"gnus-agent")
36 (autoload 'gnus-agent-read-servers-validate-native
"gnus-agent")
37 (autoload 'gnus-agent-possibly-synchronize-flags-server
"gnus-agent")
39 (defcustom gnus-open-server-hook nil
40 "Hook called just before opening connection to the news server."
44 (defcustom gnus-after-set-mark-hook nil
45 "Hook called just after marks are set in a group."
49 (defcustom gnus-before-update-mark-hook nil
50 "Hook called just before marks are updated in a group."
54 (defcustom gnus-server-unopen-status nil
55 "The default status if the server is not able to open.
56 If the server is covered by Gnus agent, the possible values are
57 `denied', set the server denied; `offline', set the server offline;
58 nil, ask user. If the server is not covered by Gnus agent, set the
62 :type
'(choice (const :tag
"Ask" nil
)
63 (const :tag
"Deny server" denied
)
64 (const :tag
"Unplug Agent" offline
)))
66 (defvar gnus-internal-registry-spool-current-method nil
67 "The current method, for the registry.")
70 (defun gnus-server-opened (gnus-command-method)
71 "Check whether a connection to GNUS-COMMAND-METHOD has been opened."
72 (unless (eq (gnus-server-status gnus-command-method
)
74 (when (stringp gnus-command-method
)
75 (setq gnus-command-method
(gnus-server-to-method gnus-command-method
)))
76 (funcall (inline (gnus-get-function gnus-command-method
'server-opened
))
77 (nth 1 gnus-command-method
))))
79 (defun gnus-status-message (gnus-command-method)
80 "Return the status message from GNUS-COMMAND-METHOD.
81 If GNUS-COMMAND-METHOD is a string, it is interpreted as a group
82 name. The method this group uses will be queried."
83 (let ((gnus-command-method
84 (if (stringp gnus-command-method
)
85 (gnus-find-method-for-group gnus-command-method
)
86 gnus-command-method
)))
87 (funcall (gnus-get-function gnus-command-method
'status-message
)
88 (nth 1 gnus-command-method
))))
91 ;;; Server Communication
94 (defun gnus-start-news-server (&optional confirm
)
95 "Open a method for getting news.
96 If CONFIRM is non-nil, the user will be asked for an NNTP server."
98 (if gnus-current-select-method
99 ;; Stream is already opened.
103 ;; Read server name with completion.
104 (setq gnus-nntp-server
105 (gnus-completing-read "NNTP server"
106 (cons gnus-nntp-server
107 gnus-secondary-servers
)
108 nil gnus-nntp-server
)))
110 (when (and gnus-nntp-server
111 (stringp gnus-nntp-server
)
112 (not (string= gnus-nntp-server
"")))
113 (setq gnus-select-method
114 (cond ((or (string= gnus-nntp-server
"")
115 (string= gnus-nntp-server
"::"))
116 (list 'nnspool
(system-name)))
117 ((string-match "^:" gnus-nntp-server
)
118 (list 'nnmh gnus-nntp-server
119 (list 'nnmh-directory
120 (file-name-as-directory
122 (substring gnus-nntp-server
1) "~/")))
123 (list 'nnmh-get-new-mail nil
)))
125 (list 'nntp gnus-nntp-server
)))))
127 (setq how
(car gnus-select-method
))
131 (gnus-message 5 "Looking up local news spool..."))
134 (gnus-message 5 "Looking up mh spool..."))
137 (setq gnus-current-select-method gnus-select-method
)
138 (gnus-run-hooks 'gnus-open-server-hook
)
140 ;; Partially validate agent covered methods now that the
141 ;; gnus-select-method is known.
144 ;; NOTE: This is here for one purpose only. By validating
145 ;; the current select method, it converts the old 5.10.3,
146 ;; and earlier, format to the current format. That enables
147 ;; the agent code within gnus-open-server to function
149 (gnus-agent-read-servers-validate-native gnus-select-method
))
152 ;; gnus-open-server-hook might have opened it
153 (gnus-server-opened gnus-select-method
)
154 (gnus-open-server gnus-select-method
)
158 "%s (%s) open error: '%s'. Continue? "
159 (car gnus-select-method
) (cadr gnus-select-method
)
160 (gnus-status-message gnus-select-method
)))
161 (gnus-error 1 "Couldn't open server on %s"
162 (nth 1 gnus-select-method
))))))
164 (defun gnus-check-group (group)
165 "Try to make sure that the server where GROUP exists is alive."
166 (let ((method (gnus-find-method-for-group group
)))
167 (or (gnus-server-opened method
)
168 (gnus-open-server method
))))
170 (defun gnus-check-server (&optional method silent
)
171 "Check whether the connection to METHOD is down.
172 If METHOD is nil, use `gnus-select-method'.
173 If it is down, start it up (again)."
174 (let ((method (or method gnus-select-method
))
176 ;; Transform virtual server names into select methods.
177 (when (stringp method
)
178 (setq method
(gnus-server-to-method method
)))
179 (if (gnus-server-opened method
)
180 ;; The stream is already opened.
184 (gnus-message 5 "Opening %s server%s..." (car method
)
185 (if (equal (nth 1 method
) "") ""
186 (format " on %s" (nth 1 method
)))))
187 (gnus-run-hooks 'gnus-open-server-hook
)
189 (setq result
(gnus-open-server method
))
193 "Opening %s server%s...%s" (car method
)
194 (if (equal (nth 1 method
) "") ""
195 (format " on %s" (nth 1 method
)))
199 (nnheader-get-report-string (car method
))))))))))
201 (defun gnus-get-function (method function
&optional noerror
)
202 "Return a function symbol based on METHOD and FUNCTION."
203 ;; Translate server names into methods.
205 (error "Attempted use of a nil select method"))
206 (when (stringp method
)
207 (setq method
(gnus-server-to-method method
)))
208 ;; Check cache of constructed names.
209 (let* ((method-sym (if gnus-agent
210 (inline (gnus-agent-get-function method
))
212 (method-fns (get method-sym
'gnus-method-functions
))
213 (func (let ((method-fnlist-elt (assq function method-fns
)))
214 (unless method-fnlist-elt
215 (setq method-fnlist-elt
217 (intern (format "%s-%s" method-sym function
))))
218 (put method-sym
'gnus-method-functions
219 (cons method-fnlist-elt method-fns
)))
220 (cdr method-fnlist-elt
))))
221 ;; Maybe complain if there is no function.
222 (unless (fboundp func
)
224 (error "Trying to require a method that doesn't exist"))
225 (require (car method
))
226 (when (not (fboundp func
))
229 (error "No such function: %s" func
))))
234 ;;; Interface functions to the backends.
237 (defun gnus-method-denied-p (method)
238 (eq (nth 1 (assoc method gnus-opened-servers
))
241 (defvar gnus-backend-trace t
)
243 (defun gnus-open-server (gnus-command-method)
244 "Open a connection to GNUS-COMMAND-METHOD."
245 (when (stringp gnus-command-method
)
246 (setq gnus-command-method
(gnus-server-to-method gnus-command-method
)))
247 (when gnus-backend-trace
248 (with-current-buffer (get-buffer-create "*gnus trace*")
249 (buffer-disable-undo)
250 (goto-char (point-max))
251 (insert (format-time-string "%H:%M:%S")
252 (format " %S\n" gnus-command-method
))))
253 (let ((elem (assoc gnus-command-method gnus-opened-servers
))
254 (server (gnus-method-to-server-name gnus-command-method
)))
255 ;; If this method was previously denied, we just return nil.
256 (if (eq (nth 1 elem
) 'denied
)
258 (gnus-message 1 "Denied server %s" server
)
261 (let* ((open-server-function
262 (gnus-get-function gnus-command-method
'open-server
))
265 (funcall open-server-function
266 (nth 1 gnus-command-method
)
267 (nthcdr 2 gnus-command-method
))
269 (gnus-message 1 "Unable to open server %s due to: %s"
270 server
(error-message-string err
))
273 (gnus-message 1 "Quit trying to open server %s" server
)
276 ;; If this hasn't been opened before, we add it to the list.
278 (setq elem
(list gnus-command-method nil
)
279 gnus-opened-servers
(cons elem gnus-opened-servers
)))
280 ;; Set the status of this server.
284 (if (eq open-server-function
#'nnagent-open-server
)
285 ;; The agent's backend has a "special" status
289 (gnus-agent-method-p gnus-command-method
))
291 (gnus-server-unopen-status
292 ;; Set the server's status to the unopen
293 ;; status. If that status is offline,
294 ;; recurse to open the agent's backend.
295 (setq open-offline
(eq gnus-server-unopen-status
'offline
))
296 gnus-server-unopen-status
)
297 ((not gnus-batch-mode
)
298 (setq open-offline t
)
301 ;; This agentized server was still denied
304 ;; This unagentized server must be denied
307 ;; NOTE: I MUST set the server's status to offline before this
308 ;; recursive call as this status will drive the
309 ;; gnus-get-function (called above) to return the agent's
312 ;; Recursively open this offline server to perform the
313 ;; open-server function of the agent's backend.
314 (let ((gnus-server-unopen-status 'denied
))
315 ;; Bind gnus-server-unopen-status to avoid recursively
316 ;; prompting with "go offline?". This is only a concern
317 ;; when the agent's backend fails to open the server.
318 (gnus-open-server gnus-command-method
))
319 (when (and (eq (cadr elem
) 'ok
) gnus-agent
320 (gnus-agent-method-p gnus-command-method
))
322 (gnus-agent-possibly-synchronize-flags-server
323 gnus-command-method
)))
326 (defun gnus-close-server (gnus-command-method)
327 "Close the connection to GNUS-COMMAND-METHOD."
328 (when (stringp gnus-command-method
)
329 (setq gnus-command-method
(gnus-server-to-method gnus-command-method
)))
330 (funcall (gnus-get-function gnus-command-method
'close-server
)
331 (nth 1 gnus-command-method
)))
333 (defun gnus-request-list (gnus-command-method)
334 "Request the active file from GNUS-COMMAND-METHOD."
335 (when (stringp gnus-command-method
)
336 (setq gnus-command-method
(gnus-server-to-method gnus-command-method
)))
337 (funcall (gnus-get-function gnus-command-method
'request-list
)
338 (nth 1 gnus-command-method
)))
340 (defun gnus-finish-retrieve-group-infos (gnus-command-method infos data
)
341 "Read and update infos from GNUS-COMMAND-METHOD."
342 (when (stringp gnus-command-method
)
343 (setq gnus-command-method
(gnus-server-to-method gnus-command-method
)))
344 (funcall (gnus-get-function gnus-command-method
'finish-retrieve-group-infos
)
345 (nth 1 gnus-command-method
)
348 (defun gnus-retrieve-group-data-early (gnus-command-method infos
)
349 "Start early async retrival of data from GNUS-COMMAND-METHOD."
350 (when (stringp gnus-command-method
)
351 (setq gnus-command-method
(gnus-server-to-method gnus-command-method
)))
352 (funcall (gnus-get-function gnus-command-method
'retrieve-group-data-early
)
353 (nth 1 gnus-command-method
)
356 (defun gnus-request-list-newsgroups (gnus-command-method)
357 "Request the newsgroups file from GNUS-COMMAND-METHOD."
358 (when (stringp gnus-command-method
)
359 (setq gnus-command-method
(gnus-server-to-method gnus-command-method
)))
360 (funcall (gnus-get-function gnus-command-method
'request-list-newsgroups
)
361 (nth 1 gnus-command-method
)))
363 (defun gnus-request-newgroups (date gnus-command-method
)
364 "Request all new groups since DATE from GNUS-COMMAND-METHOD."
365 (when (stringp gnus-command-method
)
366 (setq gnus-command-method
(gnus-server-to-method gnus-command-method
)))
367 (let ((func (gnus-get-function gnus-command-method
'request-newgroups t
)))
369 (funcall func date
(nth 1 gnus-command-method
)))))
371 (defun gnus-request-regenerate (gnus-command-method)
372 "Request a data generation from GNUS-COMMAND-METHOD."
373 (when (stringp gnus-command-method
)
374 (setq gnus-command-method
(gnus-server-to-method gnus-command-method
)))
375 (funcall (gnus-get-function gnus-command-method
'request-regenerate
)
376 (nth 1 gnus-command-method
)))
378 (defun gnus-request-compact-group (group)
379 (let* ((method (gnus-find-method-for-group group
))
380 (gnus-command-method method
)
382 (funcall (gnus-get-function gnus-command-method
383 'request-compact-group
)
384 (gnus-group-real-name group
)
385 (nth 1 gnus-command-method
) t
)))
388 (defun gnus-request-compact (gnus-command-method)
389 "Request groups compaction from GNUS-COMMAND-METHOD."
390 (when (stringp gnus-command-method
)
391 (setq gnus-command-method
(gnus-server-to-method gnus-command-method
)))
392 (funcall (gnus-get-function gnus-command-method
'request-compact
)
393 (nth 1 gnus-command-method
)))
395 (defun gnus-request-group (group &optional dont-check gnus-command-method info
)
396 "Request GROUP. If DONT-CHECK, no information is required."
397 (let ((gnus-command-method
398 (or gnus-command-method
(inline (gnus-find-method-for-group group
)))))
399 (when (stringp gnus-command-method
)
400 (setq gnus-command-method
401 (inline (gnus-server-to-method gnus-command-method
))))
402 (funcall (inline (gnus-get-function gnus-command-method
'request-group
))
403 (gnus-group-real-name group
) (nth 1 gnus-command-method
)
407 (defun gnus-list-active-group (group)
408 "Request active information on GROUP."
409 (let ((gnus-command-method (gnus-find-method-for-group group
))
410 (func 'list-active-group
))
411 (when (gnus-check-backend-function func group
)
412 (funcall (gnus-get-function gnus-command-method func
)
413 (gnus-group-real-name group
) (nth 1 gnus-command-method
)))))
415 (defun gnus-request-group-description (group)
416 "Request a description of GROUP."
417 (let ((gnus-command-method (gnus-find-method-for-group group
))
418 (func 'request-group-description
))
419 (when (gnus-check-backend-function func group
)
420 (funcall (gnus-get-function gnus-command-method func
)
421 (gnus-group-real-name group
) (nth 1 gnus-command-method
)))))
423 (defun gnus-request-group-articles (group)
424 "Request a list of existing articles in GROUP."
425 (let ((gnus-command-method (gnus-find-method-for-group group
))
426 (func 'request-group-articles
))
427 (when (gnus-check-backend-function func group
)
428 (funcall (gnus-get-function gnus-command-method func
)
429 (gnus-group-real-name group
) (nth 1 gnus-command-method
)))))
431 (defun gnus-close-group (group)
432 "Request the GROUP be closed."
433 (let ((gnus-command-method (inline (gnus-find-method-for-group group
))))
434 (funcall (gnus-get-function gnus-command-method
'close-group
)
435 (gnus-group-real-name group
) (nth 1 gnus-command-method
))))
437 (defun gnus-retrieve-headers (articles group
&optional fetch-old
)
438 "Request headers for ARTICLES in GROUP.
439 If FETCH-OLD, retrieve all headers (or some subset thereof) in the group."
440 (let ((gnus-command-method (gnus-find-method-for-group group
)))
442 ((and gnus-use-cache
(numberp (car articles
)))
443 (gnus-cache-retrieve-headers articles group fetch-old
))
444 ((and gnus-agent
(gnus-online gnus-command-method
)
445 (gnus-agent-method-p gnus-command-method
))
446 (gnus-agent-retrieve-headers articles group fetch-old
))
448 (funcall (gnus-get-function gnus-command-method
'retrieve-headers
)
449 articles
(gnus-group-real-name group
)
450 (nth 1 gnus-command-method
) fetch-old
)))))
452 (defun gnus-retrieve-articles (articles group
)
453 "Request ARTICLES in GROUP."
454 (let ((gnus-command-method (gnus-find-method-for-group group
)))
455 (funcall (gnus-get-function gnus-command-method
'retrieve-articles
)
456 articles
(gnus-group-real-name group
)
457 (nth 1 gnus-command-method
))))
459 (defun gnus-retrieve-groups (groups gnus-command-method
)
460 "Request active information on GROUPS from GNUS-COMMAND-METHOD."
461 (when (stringp gnus-command-method
)
462 (setq gnus-command-method
(gnus-server-to-method gnus-command-method
)))
463 (funcall (gnus-get-function gnus-command-method
'retrieve-groups
)
464 groups
(nth 1 gnus-command-method
)))
466 (defun gnus-request-type (group &optional article
)
467 "Return the type (`post' or `mail') of GROUP (and ARTICLE)."
468 (let ((gnus-command-method (gnus-find-method-for-group group
)))
469 (if (not (gnus-check-backend-function
470 'request-type
(car gnus-command-method
)))
472 (funcall (gnus-get-function gnus-command-method
'request-type
)
473 (gnus-group-real-name group
) article
))))
475 (defun gnus-request-update-group-status (group status
)
476 "Change the status of a group.
477 Valid statuses include `subscribe' and `unsubscribe'."
478 (let ((gnus-command-method (gnus-find-method-for-group group
)))
479 (if (not (gnus-check-backend-function
480 'request-update-group-status
(car gnus-command-method
)))
483 (gnus-get-function gnus-command-method
'request-update-group-status
)
484 (gnus-group-real-name group
) status
485 (nth 1 gnus-command-method
)))))
487 (defun gnus-request-set-mark (group action
)
488 "Set marks on articles in the back end."
489 (let ((gnus-command-method (gnus-find-method-for-group group
)))
490 (if (not (gnus-check-backend-function
491 'request-set-mark
(car gnus-command-method
)))
493 (funcall (gnus-get-function gnus-command-method
'request-set-mark
)
494 (gnus-group-real-name group
) action
495 (nth 1 gnus-command-method
))
496 (gnus-run-hook-with-args gnus-after-set-mark-hook group action
))))
498 (defun gnus-request-update-mark (group article mark
)
499 "Allow the back end to change the mark the user tries to put on an article."
500 (let ((gnus-command-method (gnus-find-method-for-group group
)))
501 (if (not (gnus-check-backend-function
502 'request-update-mark
(car gnus-command-method
)))
504 (gnus-run-hook-with-args gnus-before-update-mark-hook group article mark
)
505 (funcall (gnus-get-function gnus-command-method
'request-update-mark
)
506 (gnus-group-real-name group
) article mark
))))
508 (defun gnus-request-article (article group
&optional buffer
)
509 "Request the ARTICLE in GROUP.
510 ARTICLE can either be an article number or an article Message-ID.
511 If BUFFER, insert the article in that group."
512 (let ((gnus-command-method (gnus-find-method-for-group group
)))
513 (funcall (gnus-get-function gnus-command-method
'request-article
)
514 article
(gnus-group-real-name group
)
515 (nth 1 gnus-command-method
) buffer
)))
517 (defun gnus-request-thread (header)
518 "Request the headers in the thread containing the article specified by HEADER."
519 (let ((gnus-command-method (gnus-find-method-for-group gnus-newsgroup-name
)))
520 (funcall (gnus-get-function gnus-command-method
'request-thread
)
523 (defun gnus-warp-to-article ()
524 "Warps from an article in a virtual group to the article in its
525 real group. Does nothing on a real group."
527 (let ((gnus-command-method
528 (gnus-find-method-for-group gnus-newsgroup-name
)))
529 (when (gnus-check-backend-function
530 'warp-to-article
(car gnus-command-method
))
531 (funcall (gnus-get-function gnus-command-method
'warp-to-article
)))))
533 (defun gnus-request-head (article group
)
534 "Request the head of ARTICLE in GROUP."
535 (let* ((gnus-command-method (gnus-find-method-for-group group
))
536 (head (gnus-get-function gnus-command-method
'request-head t
))
542 (gnus-cache-request-article article group
))
543 (setq res
(cons group article
)
545 ;; Check the agent cache.
546 ((gnus-agent-request-article article group
)
547 (setq res
(cons group article
)
549 ;; Use `head' function.
551 (setq res
(funcall head article
(gnus-group-real-name group
)
552 (nth 1 gnus-command-method
))))
553 ;; Use `article' function.
555 (setq res
(gnus-request-article article group
)
558 (with-current-buffer nntp-server-buffer
559 (goto-char (point-min))
560 (when (search-forward "\n\n" nil t
)
561 (delete-region (1- (point)) (point-max)))
562 (nnheader-fold-continuation-lines)))
565 (defun gnus-request-body (article group
)
566 "Request the body of ARTICLE in GROUP."
567 (let* ((gnus-command-method (gnus-find-method-for-group group
))
568 (head (gnus-get-function gnus-command-method
'request-body t
))
574 (gnus-cache-request-article article group
))
575 (setq res
(cons group article
)
577 ;; Check the agent cache.
578 ((gnus-agent-request-article article group
)
579 (setq res
(cons group article
)
581 ;; Use `head' function.
583 (setq res
(funcall head article
(gnus-group-real-name group
)
584 (nth 1 gnus-command-method
))))
585 ;; Use `article' function.
587 (setq res
(gnus-request-article article group
)
590 (with-current-buffer nntp-server-buffer
591 (goto-char (point-min))
592 (when (search-forward "\n\n" nil t
)
593 (delete-region (point-min) (1- (point))))))
596 (defun gnus-request-post (gnus-command-method)
597 "Post the current buffer using GNUS-COMMAND-METHOD."
598 (when (stringp gnus-command-method
)
599 (setq gnus-command-method
(gnus-server-to-method gnus-command-method
)))
600 (funcall (gnus-get-function gnus-command-method
'request-post
)
601 (nth 1 gnus-command-method
)))
603 (defun gnus-request-expunge-group (group gnus-command-method
)
604 "Expunge GROUP, which is removing articles that have been marked as deleted."
605 (when (stringp gnus-command-method
)
606 (setq gnus-command-method
(gnus-server-to-method gnus-command-method
)))
607 (funcall (gnus-get-function gnus-command-method
'request-expunge-group
)
608 (gnus-group-real-name group
)
609 (nth 1 gnus-command-method
)))
611 (defun gnus-request-scan (group gnus-command-method
)
612 "Request a SCAN being performed in GROUP from GNUS-COMMAND-METHOD.
613 If GROUP is nil, all groups on GNUS-COMMAND-METHOD are scanned."
614 (let ((gnus-command-method
615 (if group
(gnus-find-method-for-group group
) gnus-command-method
))
616 (gnus-inhibit-demon t
)
617 (mail-source-plugged gnus-plugged
))
618 (when (or gnus-plugged
619 (not (gnus-agent-method-p gnus-command-method
)))
620 (setq gnus-internal-registry-spool-current-method gnus-command-method
)
621 (funcall (gnus-get-function gnus-command-method
'request-scan
)
622 (and group
(gnus-group-real-name group
))
623 (nth 1 gnus-command-method
)))))
625 (defun gnus-request-update-info (info gnus-command-method
)
626 (when (gnus-check-backend-function
627 'request-update-info
(car gnus-command-method
))
628 (when (stringp gnus-command-method
)
629 (setq gnus-command-method
(gnus-server-to-method gnus-command-method
)))
630 (funcall (gnus-get-function gnus-command-method
'request-update-info
)
631 (gnus-group-real-name (gnus-info-group info
)) info
632 (nth 1 gnus-command-method
))))
634 (defsubst gnus-request-marks
(info gnus-command-method
)
635 "Request that GNUS-COMMAND-METHOD update INFO."
636 (when (stringp gnus-command-method
)
637 (setq gnus-command-method
(gnus-server-to-method gnus-command-method
)))
638 (when (gnus-check-backend-function
639 'request-marks
(car gnus-command-method
))
640 (let ((group (gnus-info-group info
)))
641 (and (funcall (gnus-get-function gnus-command-method
642 'request-update-info
)
643 (gnus-group-real-name group
)
644 info
(nth 1 gnus-command-method
))
645 ;; If the minimum article number is greater than 1, then all
646 ;; smaller article numbers are known not to exist; we'll
647 ;; artificially add those to the 'read range.
648 (let* ((active (gnus-active group
))
651 (let* ((range (if (= min
2) 1 (cons 1 (1- min
))))
652 (read (gnus-info-read info
))
653 (new-read (gnus-range-add read
(list range
))))
654 (gnus-info-set-read info new-read
)))
657 (defun gnus-request-expire-articles (articles group
&optional force
)
658 (let* ((gnus-command-method (gnus-find-method-for-group group
))
659 (gnus-inhibit-demon t
)
662 (gnus-get-function gnus-command-method
'request-expire-articles
)
663 articles
(gnus-group-real-name group
) (nth 1 gnus-command-method
)
665 (when (and gnus-agent
666 (gnus-agent-method-p gnus-command-method
))
667 (let ((expired-articles (gnus-sorted-difference articles not-deleted
)))
668 (when expired-articles
669 (gnus-agent-expire expired-articles group
'force
))))
672 (defun gnus-request-move-article (article group server accept-function
673 &optional last move-is-internal
)
674 (let* ((gnus-command-method (gnus-find-method-for-group group
))
675 (result (funcall (gnus-get-function gnus-command-method
676 'request-move-article
)
677 article
(gnus-group-real-name group
)
678 (nth 1 gnus-command-method
) accept-function
679 last move-is-internal
)))
680 (when (and result gnus-agent
681 (gnus-agent-method-p gnus-command-method
))
682 (gnus-agent-unfetch-articles group
(list article
)))
685 (defun gnus-request-accept-article (group &optional gnus-command-method last
687 ;; Make sure there's a newline at the end of the article.
688 (when (stringp gnus-command-method
)
689 (setq gnus-command-method
(gnus-server-to-method gnus-command-method
)))
690 (when (and (not gnus-command-method
)
692 (setq gnus-command-method
(or (gnus-find-method-for-group group
)
693 (gnus-group-name-to-method group
))))
694 (goto-char (point-max))
698 (let ((message-options message-options
))
699 (message-options-set-recipient)
701 (message-narrow-to-head)
702 (let ((mail-parse-charset message-default-charset
))
703 (mail-encode-encoded-word-buffer)))
704 (message-encode-message-body)))
705 (let ((gnus-command-method (or gnus-command-method
706 (gnus-find-method-for-group group
)))
709 (gnus-get-function gnus-command-method
'request-accept-article
)
710 (if (stringp group
) (gnus-group-real-name group
) group
)
711 (cadr gnus-command-method
)
713 (when (and gnus-agent
714 (gnus-agent-method-p gnus-command-method
)
716 (gnus-agent-regenerate-group group
(list (cdr result
))))
719 (defun gnus-request-replace-article (article group buffer
&optional no-encode
)
721 (let ((message-options message-options
))
722 (message-options-set-recipient)
724 (message-narrow-to-head)
725 (let ((mail-parse-charset message-default-charset
))
726 (mail-encode-encoded-word-buffer)))
727 (message-encode-message-body)))
728 (let* ((func (car (gnus-group-name-to-method group
)))
729 (result (funcall (intern (format "%s-request-replace-article" func
))
730 article
(gnus-group-real-name group
) buffer
)))
731 (when (and gnus-agent
(gnus-agent-method-p gnus-command-method
))
732 (gnus-agent-regenerate-group group
(list article
)))
735 (defun gnus-request-associate-buffer (group)
736 (let ((gnus-command-method (gnus-find-method-for-group group
)))
737 (funcall (gnus-get-function gnus-command-method
'request-associate-buffer
)
738 (gnus-group-real-name group
))))
740 (defun gnus-request-restore-buffer (article group
)
741 "Request a new buffer restored to the state of ARTICLE."
742 (let ((gnus-command-method (gnus-find-method-for-group group
)))
743 (funcall (gnus-get-function gnus-command-method
'request-restore-buffer
)
744 article
(gnus-group-real-name group
)
745 (nth 1 gnus-command-method
))))
747 (defun gnus-request-create-group (group &optional gnus-command-method args
)
748 (when (stringp gnus-command-method
)
749 (setq gnus-command-method
(gnus-server-to-method gnus-command-method
)))
750 (let ((gnus-command-method
751 (or gnus-command-method
(gnus-find-method-for-group group
))))
752 (funcall (gnus-get-function gnus-command-method
'request-create-group
)
753 (gnus-group-real-name group
) (nth 1 gnus-command-method
) args
)))
755 (defun gnus-request-delete-group (group &optional force
)
756 (let* ((gnus-command-method (gnus-find-method-for-group group
))
758 (funcall (gnus-get-function gnus-command-method
'request-delete-group
)
759 (gnus-group-real-name group
) force
(nth 1 gnus-command-method
))))
761 (gnus-cache-delete-group group
)
762 (gnus-agent-delete-group group
))
765 (defun gnus-request-rename-group (group new-name
)
766 (let* ((gnus-command-method (gnus-find-method-for-group group
))
768 (funcall (gnus-get-function gnus-command-method
'request-rename-group
)
769 (gnus-group-real-name group
)
770 (gnus-group-real-name new-name
) (nth 1 gnus-command-method
))))
772 (gnus-cache-rename-group group new-name
)
773 (gnus-agent-rename-group group new-name
))
776 (defun gnus-close-backends ()
777 ;; Send a close request to all backends that support such a request.
778 (let ((methods gnus-valid-select-methods
)
779 (gnus-inhibit-demon t
)
780 func gnus-command-method
)
781 (while (setq gnus-command-method
(pop methods
))
782 (when (fboundp (setq func
(intern
783 (concat (car gnus-command-method
)
787 (defun gnus-asynchronous-p (gnus-command-method)
788 (let ((func (gnus-get-function gnus-command-method
'asynchronous-p t
)))
792 (defun gnus-remove-denial (gnus-command-method)
793 (when (stringp gnus-command-method
)
794 (setq gnus-command-method
(gnus-server-to-method gnus-command-method
)))
795 (let* ((elem (assoc gnus-command-method gnus-opened-servers
))
796 (status (cadr elem
)))
797 ;; If this hasn't been opened before, we add it to the list.
798 (when (eq status
'denied
)
799 ;; Set the status of this server.
800 (setcar (cdr elem
) 'closed
))))
804 ;;; gnus-int.el ends here