1 ;;; gnus-agent.el --- unplugged support for Semi-gnus
2 ;; Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002
3 ;; Free Software Foundation, Inc.
5 ;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
6 ;; Tatsuya Ichikawa <t-ichi@po.shiojiri.ne.jp>
7 ;; This file is part of GNU Emacs.
9 ;; GNU Emacs is free software; you can redistribute it and/or modify
10 ;; it under the terms of the GNU General Public License as published by
11 ;; the Free Software Foundation; either version 2, or (at your option)
14 ;; GNU Emacs is distributed in the hope that it will be useful,
15 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
16 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 ;; GNU General Public License for more details.
19 ;; You should have received a copy of the GNU General Public License
20 ;; along with GNU Emacs; see the file COPYING. If not, write to the
21 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
22 ;; Boston, MA 02111-1307, USA.
28 (eval-when-compile (require 'cl))
29 (eval-when-compile (require 'gnus-clfns))
38 (if (featurep 'xemacs)
41 (require 'gnus-group))
44 (autoload 'gnus-server-update-server "gnus-srvr"))
46 (defcustom gnus-agent-directory (nnheader-concat gnus-directory "agent/")
47 "Where the Gnus agent will store its files."
51 (defcustom gnus-agent-plugged-hook nil
52 "Hook run when plugging into the network."
56 (defcustom gnus-agent-unplugged-hook nil
57 "Hook run when unplugging from the network."
61 (defcustom gnus-agent-handle-level gnus-level-subscribed
62 "Groups on levels higher than this variable will be ignored by the Agent."
66 (defcustom gnus-agent-expire-days 7
67 "Read articles older than this will be expired.
68 This can also be a list of regexp/day pairs. The regexps will
69 be matched against group names."
73 (defcustom gnus-agent-expire-all nil
74 "If non-nil, also expire unread, ticked and dormant articles.
75 If nil, only read articles will be expired."
79 (defcustom gnus-agent-group-mode-hook nil
80 "Hook run in Agent group minor modes."
84 ;; Extracted from gnus-xmas-redefine in order to preserve user settings
85 (when (featurep 'xemacs)
86 (add-hook 'gnus-agent-group-mode-hook 'gnus-xmas-agent-group-menu-add))
88 (defcustom gnus-agent-summary-mode-hook nil
89 "Hook run in Agent summary minor modes."
93 ;; Extracted from gnus-xmas-redefine in order to preserve user settings
94 (when (featurep 'xemacs)
95 (add-hook 'gnus-agent-summary-mode-hook 'gnus-xmas-agent-summary-menu-add))
97 (defcustom gnus-agent-server-mode-hook nil
98 "Hook run in Agent summary minor modes."
102 ;; Extracted from gnus-xmas-redefine in order to preserve user settings
103 (when (featurep 'xemacs)
104 (add-hook 'gnus-agent-server-mode-hook 'gnus-xmas-agent-server-menu-add))
106 (defcustom gnus-agent-confirmation-function 'y-or-n-p
107 "Function to confirm when error happens."
112 (defcustom gnus-agent-large-newsgroup nil
113 "*The number of articles which indicates a large newsgroup.
114 If the number of unread articles exceeds it, The number of articles to be
115 fetched will be limited to it. If not a positive integer, never consider it."
117 :type '(choice (const nil)
118 (integer :tag "Number")))
120 (defcustom gnus-agent-synchronize-flags 'ask
121 "Indicate if flags are synchronized when you plug in.
122 If this is `ask' the hook will query the user."
124 :type '(choice (const :tag "Always" t)
125 (const :tag "Never" nil)
126 (const :tag "Ask" ask))
129 (defcustom gnus-agent-go-online 'ask
130 "Indicate if offline servers go online when you plug in.
131 If this is `ask' the hook will query the user."
133 :type '(choice (const :tag "Always" t)
134 (const :tag "Never" nil)
135 (const :tag "Ask" ask))
138 (defcustom gnus-agent-mark-unread-after-downloaded t
139 "Indicate whether to mark articles unread after downloaded."
144 (defcustom gnus-agent-download-marks '(download)
145 "Marks for downloading."
147 :type '(repeat (symbol :tag "Mark"))
150 (defcustom gnus-agent-consider-all-articles nil
151 "If non-nil, consider also the read articles for downloading."
156 (defcustom gnus-agent-max-fetch-size 10000000 ;; 10 Mb
157 "gnus-agent-fetch-session is required to split its article fetches into chunks smaller than this limit."
161 ;;; Internal variables
163 (defvar gnus-agent-history-buffers nil)
164 (defvar gnus-agent-buffer-alist nil)
165 (defvar gnus-agent-article-alist nil
166 "An assoc list identifying the articles whose headers have been fetched.
167 If successfully fetched, these headers will be stored in the group's overview file.
168 The key of each assoc pair is the article ID.
169 The value of each assoc pair is a flag indicating
170 whether the identified article has been downloaded (gnus-agent-fetch-articles
171 sets the value to the day of the download).
173 1) The last element of this list can not be expired as some
174 routines (for example, get-agent-fetch-headers) use the last
175 value to track which articles have had their headers retrieved.
176 2) The gnus-agent-regenerate may destructively modify the value.
178 (defvar gnus-agent-group-alist nil)
179 (defvar gnus-category-alist nil)
180 (defvar gnus-agent-current-history nil)
181 (defvar gnus-agent-overview-buffer nil)
182 (defvar gnus-category-predicate-cache nil)
183 (defvar gnus-category-group-cache nil)
184 (defvar gnus-agent-spam-hashtb nil)
185 (defvar gnus-agent-file-name nil)
186 (defvar gnus-agent-send-mail-function nil)
187 (defvar gnus-agent-file-coding-system 'raw-text)
188 (defvar gnus-agent-file-loading-cache nil)
189 (defvar gnus-agent-file-header-cache nil)
191 (defvar gnus-agent-auto-agentize-methods '(nntp nnimap)
192 "Initially, all servers from these methods are agentized.
193 The user may remove or add servers using the Server buffer. See Info
194 node `(gnus)Server Buffer'.")
197 (defvar gnus-headers)
204 (defun gnus-open-agent ()
206 (gnus-agent-read-servers)
208 (gnus-agent-create-buffer)
209 (add-hook 'gnus-group-mode-hook 'gnus-agent-mode)
210 (add-hook 'gnus-summary-mode-hook 'gnus-agent-mode)
211 (add-hook 'gnus-server-mode-hook 'gnus-agent-mode))
213 (defun gnus-agent-create-buffer ()
214 (if (gnus-buffer-live-p gnus-agent-overview-buffer)
216 (setq gnus-agent-overview-buffer
217 (gnus-get-buffer-create " *Gnus agent overview*"))
218 (with-current-buffer gnus-agent-overview-buffer
219 (set-buffer-multibyte t))
222 (gnus-add-shutdown 'gnus-close-agent 'gnus)
224 (defun gnus-close-agent ()
225 (setq gnus-category-predicate-cache nil
226 gnus-category-group-cache nil
227 gnus-agent-spam-hashtb nil)
228 (gnus-kill-buffer gnus-agent-overview-buffer))
231 ;;; Utility functions
234 (defun gnus-agent-read-file (file)
235 "Load FILE and do a `read' there."
238 (nnheader-insert-file-contents file)
239 (goto-char (point-min))
240 (read (current-buffer)))))
242 (defsubst gnus-agent-method ()
243 (concat (symbol-name (car gnus-command-method)) "/"
244 (if (equal (cadr gnus-command-method) "")
246 (cadr gnus-command-method))))
248 (defsubst gnus-agent-directory ()
249 "Path of the Gnus agent directory."
250 (nnheader-concat gnus-agent-directory
251 (nnheader-translate-file-chars (gnus-agent-method)) "/"))
253 (defun gnus-agent-lib-file (file)
254 "The full path of the Gnus agent library FILE."
255 (expand-file-name file
256 (file-name-as-directory
257 (expand-file-name "agent.lib" (gnus-agent-directory)))))
259 ;;; Fetching setup functions.
261 (defun gnus-agent-start-fetch ()
262 "Initialize data structures for efficient fetching."
263 (gnus-agent-create-buffer))
265 (defun gnus-agent-stop-fetch ()
266 "Save all data structures and clean up."
267 (setq gnus-agent-spam-hashtb nil)
269 (set-buffer nntp-server-buffer)
272 (defmacro gnus-agent-with-fetch (&rest forms)
275 (let ((gnus-agent-fetching t))
276 (gnus-agent-start-fetch)
278 (gnus-agent-stop-fetch)))
280 (put 'gnus-agent-with-fetch 'lisp-indent-function 0)
281 (put 'gnus-agent-with-fetch 'edebug-form-spec '(body))
283 (defmacro gnus-agent-append-to-list (tail value)
284 `(setq ,tail (setcdr ,tail (cons ,value nil))))
290 (defvar gnus-agent-mode-hook nil
291 "Hook run when installing agent mode.")
293 (defvar gnus-agent-mode nil)
294 (defvar gnus-agent-mode-status '(gnus-agent-mode " Plugged"))
296 (defun gnus-agent-mode ()
297 "Minor mode for providing a agent support in Gnus buffers."
298 (let* ((buffer (progn (string-match "^gnus-\\(.*\\)-mode$"
299 (symbol-name major-mode))
300 (match-string 1 (symbol-name major-mode))))
301 (mode (intern (format "gnus-agent-%s-mode" buffer))))
302 (set (make-local-variable 'gnus-agent-mode) t)
304 (set (make-local-variable mode) t)
306 (when (gnus-visual-p 'agent-menu 'menu)
307 (funcall (intern (format "gnus-agent-%s-make-menu-bar" buffer))))
308 (unless (assq 'gnus-agent-mode minor-mode-alist)
309 (push gnus-agent-mode-status minor-mode-alist))
310 (unless (assq mode minor-mode-map-alist)
311 (push (cons mode (symbol-value (intern (format "gnus-agent-%s-mode-map"
313 minor-mode-map-alist))
314 (when (eq major-mode 'gnus-group-mode)
315 (gnus-agent-toggle-plugged gnus-plugged))
316 (gnus-run-hooks 'gnus-agent-mode-hook
317 (intern (format "gnus-agent-%s-mode-hook" buffer)))))
319 (defvar gnus-agent-group-mode-map (make-sparse-keymap))
320 (gnus-define-keys gnus-agent-group-mode-map
321 "Ju" gnus-agent-fetch-groups
322 "Jc" gnus-enter-category-buffer
323 "Jj" gnus-agent-toggle-plugged
324 "Js" gnus-agent-fetch-session
325 "JY" gnus-agent-synchronize-flags
326 "JS" gnus-group-send-queue
327 "Ja" gnus-agent-add-group
328 "Jr" gnus-agent-remove-group
329 "Jo" gnus-agent-toggle-group-plugged)
331 (defun gnus-agent-group-make-menu-bar ()
332 (unless (boundp 'gnus-agent-group-menu)
334 gnus-agent-group-menu gnus-agent-group-mode-map ""
336 ["Toggle plugged" gnus-agent-toggle-plugged t]
337 ["Toggle group plugged" gnus-agent-toggle-group-plugged t]
338 ["List categories" gnus-enter-category-buffer t]
339 ["Send queue" gnus-group-send-queue gnus-plugged]
341 ["All" gnus-agent-fetch-session gnus-plugged]
342 ["Group" gnus-agent-fetch-group gnus-plugged])))))
344 (defvar gnus-agent-summary-mode-map (make-sparse-keymap))
345 (gnus-define-keys gnus-agent-summary-mode-map
346 "Jj" gnus-agent-toggle-plugged
347 "Ju" gnus-agent-summary-fetch-group
348 "JS" gnus-agent-fetch-group
349 "Js" gnus-agent-summary-fetch-series
350 "J#" gnus-agent-mark-article
351 "J\M-#" gnus-agent-unmark-article
352 "@" gnus-agent-toggle-mark
353 "Jc" gnus-agent-catchup)
355 (defun gnus-agent-summary-make-menu-bar ()
356 (unless (boundp 'gnus-agent-summary-menu)
358 gnus-agent-summary-menu gnus-agent-summary-mode-map ""
360 ["Toggle plugged" gnus-agent-toggle-plugged t]
361 ["Mark as downloadable" gnus-agent-mark-article t]
362 ["Unmark as downloadable" gnus-agent-unmark-article t]
363 ["Toggle mark" gnus-agent-toggle-mark t]
364 ["Fetch downloadable" gnus-agent-summary-fetch-group t]
365 ["Catchup undownloaded" gnus-agent-catchup t]))))
367 (defvar gnus-agent-server-mode-map (make-sparse-keymap))
368 (gnus-define-keys gnus-agent-server-mode-map
369 "Jj" gnus-agent-toggle-plugged
370 "Ja" gnus-agent-add-server
371 "Jr" gnus-agent-remove-server)
373 (defun gnus-agent-server-make-menu-bar ()
374 (unless (boundp 'gnus-agent-server-menu)
376 gnus-agent-server-menu gnus-agent-server-mode-map ""
378 ["Toggle plugged" gnus-agent-toggle-plugged t]
379 ["Add" gnus-agent-add-server t]
380 ["Remove" gnus-agent-remove-server t]))))
382 (defun gnus-agent-make-mode-line-string (string mouse-button mouse-func)
383 (if (and (fboundp 'propertize)
384 (fboundp 'make-mode-line-mouse-map))
385 (propertize string 'local-map
386 (make-mode-line-mouse-map mouse-button mouse-func))
389 (defun gnus-agent-toggle-plugged (plugged)
390 "Toggle whether Gnus is unplugged or not."
391 (interactive (list (not gnus-plugged)))
394 (setq gnus-plugged plugged)
395 (gnus-run-hooks 'gnus-agent-plugged-hook)
396 (setcar (cdr gnus-agent-mode-status)
397 (gnus-agent-make-mode-line-string " Plugged"
399 'gnus-agent-toggle-plugged))
400 (gnus-agent-go-online gnus-agent-go-online)
401 (gnus-agent-possibly-synchronize-flags))
402 (gnus-agent-close-connections)
403 (setq gnus-plugged plugged)
404 (gnus-run-hooks 'gnus-agent-unplugged-hook)
405 (setcar (cdr gnus-agent-mode-status)
406 (gnus-agent-make-mode-line-string " Unplugged"
408 'gnus-agent-toggle-plugged)))
409 (force-mode-line-update)
410 (set-buffer-modified-p t))
412 (defun gnus-agent-close-connections ()
413 "Close all methods covered by the Gnus agent."
414 (let ((methods gnus-agent-covered-methods))
416 (gnus-close-server (pop methods)))))
419 (defun gnus-unplugged ()
420 "Start Gnus unplugged."
422 (setq gnus-plugged nil)
426 (defun gnus-plugged ()
427 "Start Gnus plugged."
429 (setq gnus-plugged t)
433 (defun gnus-slave-unplugged (&optional arg)
434 "Read news as a slave unplugged."
436 (setq gnus-plugged nil)
437 (gnus arg nil 'slave))
440 (defun gnus-agentize ()
441 "Allow Gnus to be an offline newsreader.
442 The normal usage of this command is to put the following as the
443 last form in your `.gnus.el' file:
447 This will modify the `gnus-setup-news-hook', and
448 `message-send-mail-real-function' variables, and install the Gnus agent
449 minor mode in all Gnus buffers."
452 (add-hook 'gnus-setup-news-hook 'gnus-agent-queue-setup)
453 (unless gnus-agent-send-mail-function
454 (setq gnus-agent-send-mail-function (or
455 message-send-mail-real-function
456 message-send-mail-function)
457 message-send-mail-real-function 'gnus-agent-send-mail))
458 (unless gnus-agent-covered-methods
461 (if (memq (car (gnus-server-to-method server))
462 gnus-agent-auto-agentize-methods)
463 (setq gnus-agent-covered-methods
464 (cons (gnus-server-to-method server)
465 gnus-agent-covered-methods ))))
466 (append (list gnus-select-method) gnus-secondary-select-methods))))
468 (defun gnus-agent-queue-setup ()
469 "Make sure the queue group exists."
470 (unless (gnus-gethash "nndraft:queue" gnus-newsrc-hashtb)
471 (gnus-request-create-group "queue" '(nndraft ""))
472 (let ((gnus-level-default-subscribed 1))
473 (gnus-subscribe-group "nndraft:queue" nil '(nndraft "")))
474 (gnus-group-set-parameter
475 "nndraft:queue" 'gnus-dummy '((gnus-draft-mode)))))
477 (defun gnus-agent-send-mail ()
479 (funcall gnus-agent-send-mail-function)
480 (goto-char (point-min))
482 (concat "^" (regexp-quote mail-header-separator) "\n"))
484 (gnus-agent-insert-meta-information 'mail)
485 (gnus-request-accept-article "nndraft:queue" nil t t)))
487 (defun gnus-agent-insert-meta-information (type &optional method)
488 "Insert meta-information into the message that says how it's to be posted.
489 TYPE can be either `mail' or `news'. If the latter, then METHOD can
492 (message-remove-header gnus-agent-meta-information-header)
493 (goto-char (point-min))
494 (insert gnus-agent-meta-information-header ": "
495 (symbol-name type) " " (format "%S" method)
498 (while (search-backward "\n" nil t)
499 (replace-match "\\n" t t))))
501 (defun gnus-agent-restore-gcc ()
502 "Restore GCC field from saved header."
504 (goto-char (point-min))
505 (while (re-search-forward (concat gnus-agent-gcc-header ":") nil t)
506 (replace-match "Gcc:" 'fixedcase))))
508 (defun gnus-agent-any-covered-gcc ()
510 (message-narrow-to-headers)
511 (let* ((gcc (mail-fetch-field "gcc" nil t))
513 (mapcar 'gnus-inews-group-method
514 (message-unquote-tokens
515 (message-tokenize-header
518 (while (and (not covered) methods)
519 (setq covered (gnus-agent-method-p (car methods))
520 methods (cdr methods)))
524 (defun gnus-agent-possibly-save-gcc ()
525 "Save GCC if Gnus is unplugged."
526 (when (and (not gnus-plugged) (gnus-agent-any-covered-gcc))
528 (goto-char (point-min))
529 (let ((case-fold-search t))
530 (while (re-search-forward "^gcc:" nil t)
531 (replace-match (concat gnus-agent-gcc-header ":") 'fixedcase))))))
533 (defun gnus-agent-possibly-do-gcc ()
534 "Do GCC if Gnus is plugged."
535 (when (or gnus-plugged (not (gnus-agent-any-covered-gcc)))
536 (gnus-inews-do-gcc)))
539 ;;; Group mode commands
542 (defun gnus-agent-fetch-groups (n)
543 "Put all new articles in the current groups into the Agent."
546 (error "Groups can't be fetched when Gnus is unplugged"))
547 (gnus-group-iterate n 'gnus-agent-fetch-group))
549 (defun gnus-agent-fetch-group (&optional group)
550 "Put all new articles in GROUP into the Agent."
551 (interactive (list (gnus-group-group-name)))
552 (let ((state gnus-plugged))
555 (setq group (or group gnus-newsgroup-name))
557 (error "No group on the current line"))
559 (gnus-agent-toggle-plugged gnus-plugged))
560 (let ((gnus-command-method (gnus-find-method-for-group group)))
561 (gnus-agent-with-fetch
562 (gnus-agent-fetch-group-1 group gnus-command-method)
563 (gnus-message 5 "Fetching %s...done" group))))
564 (when (and (not state)
566 (gnus-agent-toggle-plugged gnus-plugged)))))
568 (defun gnus-agent-add-group (category arg)
569 "Add the current group to an agent category."
575 (mapcar (lambda (cat) (list (symbol-name (car cat))))
579 (let ((cat (assq category gnus-category-alist))
581 (gnus-group-iterate arg
583 (when (cadddr (setq c (gnus-group-category group)))
584 (setf (cadddr c) (delete group (cadddr c))))
585 (push group groups)))
586 (setf (cadddr cat) (nconc (cadddr cat) groups))
587 (gnus-category-write)))
589 (defun gnus-agent-remove-group (arg)
590 "Remove the current group from its agent category, if any."
593 (gnus-group-iterate arg
595 (when (cadddr (setq c (gnus-group-category group)))
596 (setf (cadddr c) (delete group (cadddr c))))))
597 (gnus-category-write)))
599 (defun gnus-agent-synchronize-flags ()
600 "Synchronize unplugged flags with servers."
603 (dolist (gnus-command-method gnus-agent-covered-methods)
604 (when (file-exists-p (gnus-agent-lib-file "flags"))
605 (gnus-agent-synchronize-flags-server gnus-command-method)))))
607 (defun gnus-agent-possibly-synchronize-flags ()
608 "Synchronize flags according to `gnus-agent-synchronize-flags'."
611 (dolist (gnus-command-method gnus-agent-covered-methods)
612 (when (file-exists-p (gnus-agent-lib-file "flags"))
613 (gnus-agent-possibly-synchronize-flags-server gnus-command-method)))))
615 (defun gnus-agent-synchronize-flags-server (method)
616 "Synchronize flags set when unplugged for server."
617 (let ((gnus-command-method method))
618 (when (file-exists-p (gnus-agent-lib-file "flags"))
619 (set-buffer (get-buffer-create " *Gnus Agent flag synchronize*"))
621 (nnheader-insert-file-contents (gnus-agent-lib-file "flags"))
622 (if (null (gnus-check-server gnus-command-method))
623 (gnus-message 1 "Couldn't open server %s" (nth 1 gnus-command-method))
625 (if (null (eval (read (current-buffer))))
626 (progn (forward-line)
628 (write-file (gnus-agent-lib-file "flags"))
629 (error "Couldn't set flags from file %s"
630 (gnus-agent-lib-file "flags"))))
631 (delete-file (gnus-agent-lib-file "flags")))
634 (defun gnus-agent-possibly-synchronize-flags-server (method)
635 "Synchronize flags for server according to `gnus-agent-synchronize-flags'."
636 (when (or (and gnus-agent-synchronize-flags
637 (not (eq gnus-agent-synchronize-flags 'ask)))
638 (and (eq gnus-agent-synchronize-flags 'ask)
639 (gnus-y-or-n-p (format "Synchronize flags on server `%s'? "
641 (gnus-agent-synchronize-flags-server method)))
644 ;;; Server mode commands
647 (defun gnus-agent-add-server (server)
648 "Enroll SERVER in the agent program."
649 (interactive (list (gnus-server-server-name)))
651 (error "No server on the current line"))
652 (let ((method (gnus-server-get-method nil (gnus-server-server-name))))
653 (when (gnus-agent-method-p method)
654 (error "Server already in the agent program"))
655 (push method gnus-agent-covered-methods)
656 (gnus-server-update-server server)
657 (gnus-agent-write-servers)
658 (gnus-message 1 "Entered %s into the Agent" server)))
660 (defun gnus-agent-remove-server (server)
661 "Remove SERVER from the agent program."
662 (interactive (list (gnus-server-server-name)))
664 (error "No server on the current line"))
665 (let ((method (gnus-server-get-method nil (gnus-server-server-name))))
666 (unless (gnus-agent-method-p method)
667 (error "Server not in the agent program"))
668 (setq gnus-agent-covered-methods
669 (delete method gnus-agent-covered-methods))
670 (gnus-server-update-server server)
671 (gnus-agent-write-servers)
672 (gnus-message 1 "Removed %s from the agent" server)))
674 (defun gnus-agent-read-servers ()
675 "Read the alist of covered servers."
677 (let ((method (gnus-server-get-method
681 (unless (member method gnus-agent-covered-methods)
682 (push method gnus-agent-covered-methods))
683 (gnus-message 1 "Ignoring disappeared server `%s'" m)
685 (gnus-agent-read-file
686 (nnheader-concat gnus-agent-directory "lib/servers"))))
688 (defun gnus-agent-write-servers ()
689 "Write the alist of covered servers."
690 (gnus-make-directory (nnheader-concat gnus-agent-directory "lib"))
691 (let ((coding-system-for-write nnheader-file-coding-system)
692 (output-coding-system nnheader-file-coding-system)
693 (file-name-coding-system nnmail-pathname-coding-system)
694 (pathname-coding-system nnmail-pathname-coding-system))
695 (with-temp-file (nnheader-concat gnus-agent-directory "lib/servers")
696 (prin1 (mapcar 'gnus-method-simplify gnus-agent-covered-methods)
703 (defun gnus-agent-mark-article (n &optional unmark)
704 "Mark the next N articles as downloadable.
705 If N is negative, mark backward instead. If UNMARK is non-nil, remove
706 the mark instead. The difference between N and the actual number of
707 articles marked is returned."
709 (let ((backward (< n 0))
714 (gnus-summary-set-agent-mark
715 (gnus-summary-article-number) unmark)
716 (zerop (gnus-summary-next-subject (if backward -1 1) nil t))))
719 (gnus-message 7 "No more articles"))
720 (gnus-summary-recenter)
721 (gnus-summary-position-point)
724 (defun gnus-agent-unmark-article (n)
725 "Remove the downloadable mark from the next N articles.
726 If N is negative, unmark backward instead. The difference between N and
727 the actual number of articles unmarked is returned."
729 (gnus-agent-mark-article n t))
731 (defun gnus-agent-toggle-mark (n)
732 "Toggle the downloadable mark from the next N articles.
733 If N is negative, toggle backward instead. The difference between N and
734 the actual number of articles toggled is returned."
736 (gnus-agent-mark-article n 'toggle))
738 (defun gnus-summary-set-agent-mark (article &optional unmark)
739 "Mark ARTICLE as downloadable. If UNMARK is nil, article is marked.
740 When UNMARK is t, the article is unmarked. For any other value, the
741 article's mark is toggled."
742 (let ((unmark (cond ((eq nil unmark)
747 (memq article gnus-newsgroup-downloadable)))))
748 (gnus-summary-update-mark
751 (setq gnus-newsgroup-downloadable
752 (delq article gnus-newsgroup-downloadable))
753 (gnus-article-mark article))
755 (setq gnus-newsgroup-downloadable
756 (gnus-add-to-sorted-list gnus-newsgroup-downloadable article))
757 gnus-downloadable-mark)
761 (defun gnus-agent-get-undownloaded-list ()
762 "Construct list of articles that have not been downloaded."
763 (let ((gnus-command-method (gnus-find-method-for-group gnus-newsgroup-name)))
764 (when (set (make-local-variable 'gnus-newsgroup-agentized) (gnus-agent-method-p gnus-command-method))
765 (let* ((alist (gnus-agent-load-alist gnus-newsgroup-name))
766 (headers gnus-newsgroup-headers)
767 (undownloaded (list nil))
769 (while (and alist headers)
770 (let ((a (caar alist))
771 (h (mail-header-number (car headers))))
773 (pop alist)) ; ignore IDs in the alist that are not being displayed in the summary
775 (pop headers)) ; ignore headers that are not in the alist as these should be fictious (see nnagent-retrieve-headers).
779 nil; ignore already downloaded
784 (gnus-agent-append-to-list tail a)))))
785 (setq gnus-newsgroup-undownloaded (cdr undownloaded))))))
787 (defun gnus-agent-catchup ()
788 "Mark all articles as read that are neither cached, downloaded, nor downloadable."
791 (let ((articles gnus-newsgroup-undownloaded))
792 (when (or gnus-newsgroup-downloadable
793 gnus-newsgroup-cached)
794 (setq articles (gnus-sorted-ndifference (gnus-sorted-ndifference (copy-sequence articles) gnus-newsgroup-downloadable) gnus-newsgroup-cached)))
797 (gnus-summary-mark-article
798 (pop articles) gnus-catchup-mark)))
799 (gnus-summary-position-point)))
801 (defun gnus-agent-summary-fetch-series ()
803 (when gnus-newsgroup-processable
804 (setq gnus-newsgroup-downloadable
805 (let* ((dl gnus-newsgroup-downloadable)
806 (gnus-newsgroup-downloadable (sort (copy-sequence gnus-newsgroup-processable) '<))
807 (fetched-articles (gnus-agent-summary-fetch-group)))
808 ;; The preceeding call to (gnus-agent-summary-fetch-group)
809 ;; updated gnus-newsgroup-downloadable to remove each
810 ;; article successfully fetched.
812 ;; For each article that I processed, remove its
813 ;; processable mark IF the article is no longer
814 ;; downloadable (i.e. it's already downloaded)
815 (dolist (article gnus-newsgroup-processable)
816 (unless (memq article gnus-newsgroup-downloadable)
817 (gnus-summary-remove-process-mark article)))
818 (gnus-sorted-ndifference dl fetched-articles)))))
820 (defun gnus-agent-summary-fetch-group (&optional all)
821 "Fetch the downloadable articles in the group.
822 Optional arg ALL, if non-nil, means to fetch all articles."
825 (if all gnus-newsgroup-articles
826 gnus-newsgroup-downloadable))
827 (gnus-command-method (gnus-find-method-for-group gnus-newsgroup-name))
833 (gnus-agent-toggle-plugged t))
835 (error "No articles to download"))
836 (gnus-agent-with-fetch
837 (setq gnus-newsgroup-undownloaded
838 (gnus-sorted-ndifference gnus-newsgroup-undownloaded
839 (setq fetched-articles (gnus-agent-fetch-articles gnus-newsgroup-name articles)))))
842 (dolist (article articles)
843 (setq gnus-newsgroup-downloadable
844 (delq article gnus-newsgroup-downloadable))
845 (if gnus-agent-mark-unread-after-downloaded
846 (gnus-summary-mark-article article gnus-unread-mark))
847 (when (gnus-summary-goto-subject article nil t)
848 (gnus-summary-update-download-mark article)))))
849 (when (and (not state)
851 (gnus-agent-toggle-plugged nil)))
854 (defun gnus-agent-fetch-selected-article ()
855 "Fetch the current article as it is selected.
856 This can be added to `gnus-select-article-hook' or
857 `gnus-mark-article-hook'."
858 (let ((gnus-command-method gnus-current-select-method))
859 (when (and gnus-plugged (gnus-agent-method-p gnus-command-method))
860 (when (gnus-agent-fetch-articles
862 (list gnus-current-article))
863 (setq gnus-newsgroup-undownloaded
864 (delq gnus-current-article gnus-newsgroup-undownloaded))
865 (gnus-summary-update-article-line
867 (gnus-summary-article-header gnus-current-article))))))
870 ;;; Internal functions
873 (defun gnus-agent-save-active (method)
874 (gnus-agent-save-active-1 method 'gnus-active-to-gnus-format))
876 (defun gnus-agent-save-active-1 (method function)
877 (when (gnus-agent-method-p method)
878 (let* ((gnus-command-method method)
879 (new (gnus-make-hashtable (count-lines (point-min) (point-max))))
880 (file (gnus-agent-lib-file "active")))
881 (funcall function nil new)
882 (gnus-agent-write-active file new)
884 (nnheader-insert-file-contents file))))
886 (defun gnus-agent-write-active (file new)
887 (let ((orig (gnus-make-hashtable (count-lines (point-min) (point-max))))
888 (file (gnus-agent-lib-file "active"))
890 (when (file-exists-p file)
892 (nnheader-insert-file-contents file)
893 (gnus-active-to-gnus-format nil orig))
896 (when (and sym (boundp sym))
897 (if (and (boundp (setq osym (intern (symbol-name sym) orig)))
898 (setq elem (symbol-value osym)))
900 (if (and (integerp (car (symbol-value sym)))
901 (> (car elem) (car (symbol-value sym))))
902 (setcar elem (car (symbol-value sym))))
903 (if (integerp (cdr (symbol-value sym)))
904 (setcdr elem (cdr (symbol-value sym)))))
905 (set (intern (symbol-name sym) orig) (symbol-value sym)))))
907 (gnus-make-directory (file-name-directory file))
908 (let ((nnmail-active-file-coding-system gnus-agent-file-coding-system))
909 ;; The hashtable contains real names of groups, no more prefix
910 ;; removing, so set `full' to `t'.
911 (gnus-write-active-file file orig t))))
913 (defun gnus-agent-save-groups (method)
914 (gnus-agent-save-active-1 method 'gnus-groups-to-gnus-format))
916 (defun gnus-agent-save-group-info (method group active)
917 (when (gnus-agent-method-p method)
918 (let* ((gnus-command-method method)
919 (coding-system-for-write nnheader-file-coding-system)
920 (output-coding-system nnheader-file-coding-system)
921 (file-name-coding-system nnmail-pathname-coding-system)
922 (pathname-coding-system nnmail-pathname-coding-system)
923 (file (gnus-agent-lib-file "active"))
925 (gnus-make-directory (file-name-directory file))
927 ;; Emacs got problem to match non-ASCII group in multibyte buffer.
928 (set-buffer-multibyte nil)
929 (when (file-exists-p file)
930 (nnheader-insert-file-contents file))
931 (goto-char (point-min))
932 (when (re-search-forward
933 (concat "^" (regexp-quote group) " ") nil t)
935 (read (current-buffer)) ;; max
936 (setq oactive-min (read (current-buffer)))) ;; min
938 (insert (format "%S %d %d y\n" (intern group)
940 (or oactive-min (car active))))
941 (goto-char (point-max))
942 (while (search-backward "\\." nil t)
945 (defun gnus-agent-group-path (group)
946 "Translate GROUP into a path."
947 (if nnmail-use-long-file-names
948 (gnus-group-real-name group)
949 (nnheader-translate-file-chars
950 (nnheader-replace-chars-in-string
951 (nnheader-replace-duplicate-chars-in-string
952 (nnheader-replace-chars-in-string
953 (gnus-group-real-name group)
958 (defun gnus-agent-get-function (method)
959 (if (gnus-online method)
964 ;;; History functions
966 (defun gnus-agent-history-buffer ()
967 (cdr (assoc (gnus-agent-method) gnus-agent-history-buffers)))
969 (defun gnus-agent-open-history ()
971 (push (cons (gnus-agent-method)
972 (set-buffer (gnus-get-buffer-create
973 (format " *Gnus agent %s history*"
974 (gnus-agent-method)))))
975 gnus-agent-history-buffers)
976 (set-buffer-multibyte nil) ;; everything is binary
979 (let ((file (gnus-agent-lib-file "history")))
980 (when (file-exists-p file)
981 (nnheader-insert-file-contents file))
982 (set (make-local-variable 'gnus-agent-file-name) file))))
984 (defun gnus-agent-close-history ()
985 (when (gnus-buffer-live-p gnus-agent-current-history)
986 (kill-buffer gnus-agent-current-history)
987 (setq gnus-agent-history-buffers
988 (delq (assoc (gnus-agent-method) gnus-agent-history-buffers)
989 gnus-agent-history-buffers))))
995 (defun gnus-agent-fetch-articles (group articles)
996 "Fetch ARTICLES from GROUP and put them into the Agent."
998 (gnus-agent-load-alist group)
999 (let* ((alist gnus-agent-article-alist)
1000 (headers (if (< (length articles) 2) nil gnus-newsgroup-headers))
1001 (selected-sets (list nil))
1002 (current-set-size 0)
1005 ;; Check each article
1006 (while (setq article (pop articles))
1007 ;; Skip alist entries preceeding this article
1008 (while (> article (or (caar alist) (1+ article)))
1009 (setq alist (cdr alist)))
1011 ;; Prune off articles that we have already fetched.
1012 (unless (and (eq article (caar alist))
1014 ;; Skip headers preceeding this article
1017 (let* ((header (car headers)))
1019 (mail-header-number header)
1021 (setq headers (cdr headers)))
1023 ;; Add this article to the current set
1024 (setcar selected-sets (cons article (car selected-sets)))
1026 ;; Update the set size, when the set is too large start a
1027 ;; new one. I do this after adding the article as I want at
1028 ;; least one article in each set.
1029 (when (< gnus-agent-max-fetch-size
1030 (setq current-set-size (+ current-set-size (if (= header-number article)
1031 (mail-header-chars (car headers))
1033 (setcar selected-sets (nreverse (car selected-sets)))
1034 (setq selected-sets (cons nil selected-sets)
1035 current-set-size 0))))
1037 (when (or (cdr selected-sets) (car selected-sets))
1038 (let* ((fetched-articles (list nil))
1039 (tail-fetched-articles fetched-articles)
1041 (gnus-agent-directory)
1042 (gnus-agent-group-path group) "/"))
1043 (date (time-to-days (current-time)))
1044 (case-fold-search t)
1047 (setcar selected-sets (nreverse (car selected-sets)))
1048 (setq selected-sets (nreverse selected-sets))
1050 (gnus-make-directory dir)
1051 (gnus-message 7 "Fetching articles for %s..." group)
1054 (while (setq articles (pop selected-sets))
1055 ;; Fetch the articles from the backend.
1056 (if (gnus-check-backend-function 'retrieve-articles group)
1057 (setq pos (gnus-retrieve-articles articles group))
1060 (while (setq article (pop articles))
1061 (gnus-message 10 "Fetching article %s for %s..."
1064 (gnus-backlog-request-article group article
1066 (gnus-request-article article group))
1067 (goto-char (point-max))
1068 (push (cons article (point)) pos)
1069 (insert-buffer-substring nntp-server-buffer)))
1070 (copy-to-buffer nntp-server-buffer (point-min) (point-max))
1071 (setq pos (nreverse pos)))))
1072 ;; Then save these articles into the Agent.
1074 (set-buffer nntp-server-buffer)
1076 (narrow-to-region (cdar pos) (or (cdadr pos) (point-max)))
1077 (goto-char (point-min))
1078 (unless (eobp) ;; Don't save empty articles.
1079 (when (search-forward "\n\n" nil t)
1080 (when (search-backward "\nXrefs: " nil t)
1081 ;; Handle cross posting.
1082 (goto-char (match-end 0)) ; move to end of header name
1083 (skip-chars-forward "^ ") ; skip server name
1084 (skip-chars-forward " ")
1086 (while (looking-at "\\([^: \n]+\\):\\([0-9]+\\) *")
1087 (push (cons (buffer-substring (match-beginning 1)
1089 (string-to-int (buffer-substring (match-beginning 2)
1092 (goto-char (match-end 0)))
1093 (gnus-agent-crosspost crosses (caar pos) date)))
1094 (goto-char (point-min))
1095 (if (not (re-search-forward
1096 "^Message-ID: *<\\([^>\n]+\\)>" nil t))
1097 (setq id "No-Message-ID-in-article")
1098 (setq id (buffer-substring (match-beginning 1) (match-end 1))))
1099 (write-region-as-coding-system
1100 gnus-agent-file-coding-system (point-min) (point-max)
1101 (concat dir (number-to-string (caar pos))) nil 'silent)
1103 (gnus-agent-append-to-list tail-fetched-articles (caar pos)))
1107 (gnus-agent-save-alist group (cdr fetched-articles) date))
1108 (cdr fetched-articles))))))
1110 (defun gnus-agent-crosspost (crosses article &optional date)
1111 (setq date (or date t))
1113 (let (gnus-agent-article-alist group alist beg end)
1115 (set-buffer gnus-agent-overview-buffer)
1116 (when (nnheader-find-nov-line article)
1119 (setq end (progn (forward-line 1) (point)))))
1121 (setq group (caar crosses))
1122 (unless (setq alist (assoc group gnus-agent-group-alist))
1123 (push (setq alist (list group (gnus-agent-load-alist (caar crosses))))
1124 gnus-agent-group-alist))
1125 (setcdr alist (cons (cons (cdar crosses) date) (cdr alist)))
1127 (set-buffer (gnus-get-buffer-create (format " *Gnus agent overview %s*"
1129 (when (= (point-max) (point-min))
1130 (push (cons group (current-buffer)) gnus-agent-buffer-alist)
1132 (nnheader-insert-file-contents
1133 (gnus-agent-article-name ".overview" group))))
1134 (nnheader-find-nov-line (string-to-number (cdar crosses)))
1135 (insert (string-to-number (cdar crosses)))
1136 (insert-buffer-substring gnus-agent-overview-buffer beg end)
1137 (gnus-agent-check-overview-buffer))
1140 (defun gnus-agent-backup-overview-buffer ()
1141 (when gnus-newsgroup-name
1142 (let ((root (gnus-agent-article-name ".overview" gnus-newsgroup-name))
1145 (while (file-exists-p (setq name (concat root "~" (int-to-string (setq cnt (1+ cnt))) "~"))))
1146 (write-region (point-min) (point-max) name nil 'no-msg)
1147 (gnus-message 1 "Created backup copy of overview in %s." name)
1152 (defun gnus-agent-check-overview-buffer (&optional buffer)
1153 "Check the overview file given for sanity.
1154 In particular, checks that the file is sorted by article number
1155 and that there are no duplicates."
1160 (set-buffer buffer))
1163 (goto-char (point-min))
1165 (while (< (point) (point-max))
1167 (cur (condition-case nil
1168 (read (current-buffer))
1171 ((or (not (integerp cur))
1172 (not (eq (char-after) ?\t)))
1174 (setq backed-up (gnus-agent-backup-overview-buffer)))
1176 "Overview buffer contains garbage '%s'."
1178 p (gnus-point-at-eol))))
1181 (setq backed-up (gnus-agent-backup-overview-buffer)))
1183 "Duplicate overview line for %d" cur)
1184 (delete-region (point) (progn (forward-line 1) (point))))
1187 (setq backed-up (gnus-agent-backup-overview-buffer)))
1188 (gnus-message 1 "Junk article number %d" cur)
1189 (delete-region (point) (progn (forward-line 1) (point))))
1191 (sort-numeric-fields 1 (point-min) (point-max))
1192 (goto-char (point-min))
1195 (setq backed-up (gnus-agent-backup-overview-buffer)))
1196 (gnus-message 1 "Overview buffer not sorted!"))
1198 (setq prev-num cur)))
1199 (forward-line 1)))))))
1201 (defun gnus-agent-flush-cache ()
1203 (while gnus-agent-buffer-alist
1204 (set-buffer (cdar gnus-agent-buffer-alist))
1205 (write-region-as-coding-system
1206 gnus-agent-file-coding-system
1207 (point-min) (point-max)
1208 (gnus-agent-article-name ".overview"
1209 (caar gnus-agent-buffer-alist))
1211 (pop gnus-agent-buffer-alist))
1212 (while gnus-agent-group-alist
1213 (with-temp-file (gnus-agent-article-name ".agentview" (caar gnus-agent-group-alist))
1214 (princ (cdar gnus-agent-group-alist))
1216 (princ 1 (current-buffer))
1218 (pop gnus-agent-group-alist))))
1220 (defun gnus-agent-fetch-headers (group &optional force)
1221 "Fetch interesting headers into the agent. The group's overview
1222 file will be updated to include the headers while a list of available
1223 article numbers will be returned."
1224 (let* ((fetch-all (and gnus-agent-consider-all-articles
1225 ;; Do not fetch all headers if the predicate
1226 ;; implies that we only consider unread articles.
1227 (not (gnus-predicate-implies-unread
1228 (or (gnus-group-find-parameter
1229 group 'agent-predicate t)
1230 (cadr (gnus-group-category group)))))))
1231 (articles (if fetch-all
1232 (gnus-uncompress-range (gnus-active group))
1233 (gnus-list-of-unread-articles group)))
1234 (gnus-decode-encoded-word-function 'identity)
1235 (file (gnus-agent-article-name ".overview" group))
1237 ;; Check whether the number of articles is not too large.
1238 (when (and (integerp gnus-agent-large-newsgroup)
1239 (> gnus-agent-large-newsgroup 0))
1240 (setq articles (nthcdr (max (- (length articles)
1241 gnus-agent-large-newsgroup)
1245 ;; Add articles with marks to the list of article headers we want to
1246 ;; fetch. Don't fetch articles solely on the basis of a recent or seen
1247 ;; mark, but do fetch recent or seen articles if they have other, more
1248 ;; interesting marks. (We have to fetch articles with boring marks
1249 ;; because otherwise the agent will remove their marks.)
1250 (dolist (arts (gnus-info-marks (gnus-get-info group)))
1251 (unless (memq (car arts) '(seen recent killed cache))
1252 (setq articles (gnus-range-add articles (cdr arts)))))
1253 (setq articles (sort (gnus-uncompress-sequence articles) '<)))
1255 ;; At this point, I have the list of articles to consider for fetching.
1256 ;; This is the list that I'll return to my caller. Some of these articles may have already
1257 ;; been fetched. That's OK as the fetch article code will filter those out.
1258 ;; Internally, I'll filter this list to just those articles whose headers need to be fetched.
1259 (let ((articles articles))
1260 ;; Remove known articles.
1261 (when (gnus-agent-load-alist group)
1262 ;; Remove articles marked as downloaded.
1264 ;; I want to fetch all headers in the active range.
1265 ;; Therefore, exclude only those headers that are in the article alist.
1266 ;; NOTE: This is probably NOT what I want to do after agent expiration in this group.
1267 (setq articles (gnus-agent-uncached-articles articles group))
1269 ;; I want to only fetch those headers that have never been fetched.
1270 ;; Therefore, exclude all headers that are, or WERE, in the article alist.
1271 (let ((low (1+ (caar (last gnus-agent-article-alist))))
1272 (high (cdr (gnus-active group))))
1273 ;; Low can be greater than High when the same group is fetched twice
1274 ;; in the same session {The first fetch will fill the article alist
1275 ;; such that (last gnus-agent-article-alist) equals (cdr (gnus-active group))}.
1276 ;; The addition of one(the 1+ above) then forces Low to be greater than High.
1277 ;; When this happens, gnus-list-range-intersection returns nil which indicates
1278 ;; that no headers need to be fetched. -- Kevin
1279 (setq articles (gnus-list-range-intersection
1280 articles (list (cons low high)))))))
1282 (gnus-message 10 "gnus-agent-fetch-headers: undownloaded articles are '%s'" (gnus-compress-sequence articles t))
1285 (set-buffer nntp-server-buffer)
1289 (gnus-message 7 "Fetching headers for %s..." group)
1292 (gnus-make-directory (nnheader-translate-file-chars
1293 (file-name-directory file) t))
1295 (unless (eq 'nov (gnus-retrieve-headers articles group))
1296 (nnvirtual-convert-headers))
1297 (gnus-agent-check-overview-buffer)
1298 ;; Move these headers to the overview buffer so that gnus-agent-braid-nov can merge them
1299 ;; with the contents of FILE.
1300 (copy-to-buffer gnus-agent-overview-buffer (point-min) (point-max))
1301 (when (file-exists-p file)
1302 (gnus-agent-braid-nov group articles file))
1303 (gnus-agent-check-overview-buffer)
1304 (write-region-as-coding-system
1305 gnus-agent-file-coding-system
1306 (point-min) (point-max) file nil 'silent)
1307 (gnus-agent-save-alist group articles nil)
1311 (nnheader-insert-file-contents file))))
1315 (defsubst gnus-agent-copy-nov-line (article)
1317 (set-buffer gnus-agent-overview-buffer)
1318 (while (and (not (eobp))
1319 (< (setq art (read (current-buffer))) article))
1323 (not (eq article art)))
1324 (set-buffer nntp-server-buffer)
1326 (setq e (progn (forward-line 1) (point)))
1327 (set-buffer nntp-server-buffer)
1328 (insert-buffer-substring gnus-agent-overview-buffer b e))))
1330 (defun gnus-agent-braid-nov (group articles file)
1331 "Merges the article headers identified by ARTICLES from gnus-agent-overview-buffer with the contents
1332 of FILE placing the combined headers in nntp-server-buffer."
1334 (set-buffer gnus-agent-overview-buffer)
1335 (goto-char (point-min))
1336 (set-buffer nntp-server-buffer)
1338 (nnheader-insert-file-contents file)
1339 (goto-char (point-max))
1341 (unless (looking-at "[0-9]+\t")
1342 ;; Remove corrupted lines
1343 (gnus-message 1 "Overview %s is corrupted. Removing corrupted lines..." file)
1344 (goto-char (point-min))
1346 (if (looking-at "[0-9]+\t")
1348 (delete-region (point) (progn (forward-line 1) (point)))))
1350 (unless (or (= (point-min) (point-max))
1351 (< (setq last (read (current-buffer))) (car articles)))
1352 ;; We do it the hard way.
1353 (when (nnheader-find-nov-line (car articles))
1354 ;; Replacing existing NOV entry
1355 (delete-region (point) (progn (forward-line 1) (point))))
1356 (gnus-agent-copy-nov-line (pop articles))
1360 (while (let ((art (read (current-buffer))))
1361 (cond ((< art (car articles))
1364 ((= art (car articles))
1366 (delete-region (point) (progn (forward-line 1) (point)))
1372 (gnus-agent-copy-nov-line (pop articles)))))
1374 ;; Copy the rest lines
1375 (set-buffer nntp-server-buffer)
1376 (goto-char (point-max))
1379 (set-buffer gnus-agent-overview-buffer)
1381 (while (<= (read (current-buffer)) last)
1384 (setq start (point))
1385 (set-buffer nntp-server-buffer))
1386 (insert-buffer-substring gnus-agent-overview-buffer start))))
1388 (eval-when-compile ; Keeps the compiler from warning about the free variable in gnus-agent-read-agentview
1389 (defvar gnus-agent-read-agentview))
1391 (defun gnus-agent-load-alist (group)
1392 (let ((gnus-agent-read-agentview group)) ; Binds free variable that's used in gnus-agent-read-agentview
1393 "Load the article-state alist for GROUP."
1394 (setq gnus-agent-article-alist
1395 (gnus-cache-file-contents
1396 (gnus-agent-article-name ".agentview" group)
1397 'gnus-agent-file-loading-cache
1398 'gnus-agent-read-agentview))))
1400 ;; Save format may be either 1 or 2. Two is the new, compressed format that is still being tested. Format 1 is uncompressed but known to be reliable.
1401 (defconst gnus-agent-article-alist-save-format 2)
1403 (defun gnus-agent-read-agentview (file)
1404 "Load FILE and do a `read' there."
1407 (nnheader-insert-file-contents file)
1408 (goto-char (point-min))
1409 (let ((alist (read (current-buffer)))
1410 (version (condition-case nil (read (current-buffer))
1414 (cond ((= version 0)
1415 (let ((inhibit-quit t)
1417 (gnus-agent-open-history)
1418 (set-buffer (gnus-agent-history-buffer))
1419 (goto-char (point-min))
1421 (if (and (looking-at
1422 "[^\t\n]+\t\\([0-9]+\\)\t\\([^ \n]+\\) \\([0-9]+\\)")
1423 (string= (match-string 2)
1424 gnus-agent-read-agentview)
1425 (setq entry (assoc (string-to-number (match-string 3)) alist)))
1426 (setcdr entry (string-to-number (match-string 1))))
1428 (gnus-agent-close-history)
1429 (setq changed-version t)))
1431 (setq changed-version (not (= 1 gnus-agent-article-alist-save-format))))
1434 (mapcar (lambda (comp-list)
1435 (let ((state (car comp-list))
1436 (sequence (gnus-uncompress-sequence (cdr comp-list))))
1437 (mapcar (lambda (article-id)
1438 (setq uncomp (cons (cons article-id state) uncomp))) sequence))) alist)
1439 (setq alist (sort uncomp (lambda (first second) (< (car first) (car second)))))
1442 (when changed-version
1443 (let ((gnus-agent-article-alist alist))
1444 (gnus-agent-save-alist gnus-agent-read-agentview)))
1447 (defun gnus-agent-save-alist (group &optional articles state dir)
1448 "Save the article-state alist for GROUP."
1449 (let* ((file-name-coding-system nnmail-pathname-coding-system)
1450 (pathname-coding-system nnmail-pathname-coding-system)
1451 (prev (cons nil gnus-agent-article-alist))
1453 print-level print-length item article)
1454 (while (setq article (pop articles))
1455 (while (and (cdr prev)
1456 (< (caadr prev) article))
1457 (setq prev (cdr prev)))
1460 (setcdr prev (list (cons article state))))
1461 ((> (caadr prev) article)
1462 (setcdr prev (cons (cons article state) (cdr prev))))
1463 ((= (caadr prev) article)
1464 (setcdr (cadr prev) state)))
1465 (setq prev (cdr prev)))
1466 (setq gnus-agent-article-alist (cdr all))
1468 (gnus-make-directory dir)
1469 (gnus-make-directory (gnus-agent-article-name "" group)))
1470 (with-temp-file (if dir
1471 (expand-file-name ".agentview" dir)
1472 (gnus-agent-article-name ".agentview" group))
1473 (cond ((eq gnus-agent-article-alist-save-format 1)
1474 (princ gnus-agent-article-alist (current-buffer)))
1475 ((eq gnus-agent-article-alist-save-format 2)
1476 (let ((compressed nil))
1477 (mapcar (lambda (pair)
1478 (let* ((article-id (car pair))
1479 (day-of-download (cdr pair))
1480 (comp-list (assq day-of-download compressed)))
1482 (setcdr comp-list (cons article-id (cdr comp-list)))
1483 (setq compressed (cons (list day-of-download article-id) compressed)))
1484 nil)) gnus-agent-article-alist)
1485 (mapcar (lambda (comp-list) (setcdr comp-list (gnus-compress-sequence (nreverse (cdr comp-list))))) compressed)
1486 (princ compressed (current-buffer))
1491 (princ gnus-agent-article-alist-save-format (current-buffer))
1494 (defun gnus-agent-article-name (article group)
1495 (expand-file-name (if (stringp article) article (string-to-number article))
1496 (file-name-as-directory
1497 (expand-file-name (gnus-agent-group-path group)
1498 (gnus-agent-directory)))))
1500 (defun gnus-agent-batch-confirmation (msg)
1501 "Show error message and return t."
1502 (gnus-message 1 msg)
1506 (defun gnus-agent-batch-fetch ()
1507 "Start Gnus and fetch session."
1510 (let ((gnus-agent-confirmation-function 'gnus-agent-batch-confirmation))
1511 (gnus-agent-fetch-session))
1514 (defun gnus-agent-fetch-session ()
1515 "Fetch all articles and headers that are eligible for fetching."
1517 (unless gnus-agent-covered-methods
1518 (error "No servers are covered by the Gnus agent"))
1519 (unless gnus-plugged
1520 (error "Can't fetch articles while Gnus is unplugged"))
1521 (let ((methods gnus-agent-covered-methods)
1522 groups group gnus-command-method)
1527 (setq gnus-command-method (car methods))
1528 (when (and (or (gnus-server-opened gnus-command-method)
1529 (gnus-open-server gnus-command-method))
1530 (gnus-online gnus-command-method))
1531 (setq groups (gnus-groups-from-server (car methods)))
1532 (gnus-agent-with-fetch
1533 (while (setq group (pop groups))
1534 (when (<= (gnus-group-level group) gnus-agent-handle-level)
1535 (gnus-agent-fetch-group-1 group gnus-command-method))))))
1537 (unless (funcall gnus-agent-confirmation-function
1538 (format "Error %s. Continue? " (cdr err)))
1539 (error "Cannot fetch articles into the Gnus agent")))
1541 (unless (funcall gnus-agent-confirmation-function
1542 (format "Quit fetching session %s. Continue? "
1544 (signal 'quit "Cannot fetch articles into the Gnus agent"))))
1546 (run-hooks 'gnus-agent-fetch-hook)
1547 (gnus-message 6 "Finished fetching articles into the Gnus agent"))))
1549 (defun gnus-agent-fetch-group-1 (group method)
1551 (let ((gnus-command-method method)
1552 (gnus-newsgroup-name group)
1553 (gnus-newsgroup-dependencies gnus-newsgroup-dependencies)
1554 (gnus-newsgroup-headers gnus-newsgroup-headers)
1555 (gnus-newsgroup-scored gnus-newsgroup-scored)
1556 (gnus-use-cache gnus-use-cache)
1557 (gnus-summary-expunge-below gnus-summary-expunge-below)
1558 (gnus-summary-mark-below gnus-summary-mark-below)
1559 (gnus-orphan-score gnus-orphan-score)
1560 ;; Maybe some other gnus-summary local variables should also
1566 category predicate info marks score-param
1568 (unless (gnus-check-group group)
1569 (error "Can't open server for %s" group))
1572 (when (or gnus-newsgroup-active
1574 (gnus-activate-group group))
1575 (let ((marked-articles gnus-newsgroup-downloadable))
1576 ;; Identify the articles marked for download
1577 (unless gnus-newsgroup-active ;; This needs to be a
1578 ;; gnus-summary local variable
1579 ;; that is NOT bound to any
1580 ;; value above (It's global
1581 ;; value should default to nil).
1582 (dolist (mark gnus-agent-download-marks)
1583 (let ((arts (cdr (assq mark (gnus-info-marks
1584 (setq info (gnus-get-info group)))))))
1586 (setq marked-articles (nconc (gnus-uncompress-range arts)
1589 (setq marked-articles (sort marked-articles '<))
1591 ;; Fetch any new articles from the server
1592 (setq articles (gnus-agent-fetch-headers group))
1594 ;; Merge new articles with marked
1595 (setq articles (sort (append marked-articles articles) '<))
1598 ;; Parse them and see which articles we want to fetch.
1599 (setq gnus-newsgroup-dependencies
1600 (or gnus-newsgroup-dependencies
1601 (make-vector (length articles) 0)))
1603 (setq gnus-newsgroup-headers
1604 (or gnus-newsgroup-headers
1605 (gnus-get-newsgroup-headers-xover articles nil nil
1607 ;; `gnus-agent-overview-buffer' may be killed for
1608 ;; timeout reason. If so, recreate it.
1609 (gnus-agent-create-buffer)
1611 ;; Figure out how to select articles in this group
1612 (setq category (gnus-group-category group))
1616 (or (gnus-group-find-parameter group 'agent-predicate t)
1619 ;; If the selection predicate requires scoring, score each header
1620 (unless (memq predicate '(gnus-agent-true gnus-agent-false))
1622 (or (gnus-group-get-parameter group 'agent-score t)
1624 ;; Translate score-param into real one
1627 ((eq score-param 'file)
1628 (setq score-param (gnus-all-score-files group)))
1629 ((stringp (car score-param)))
1631 (setq score-param (list (list score-param)))))
1633 (gnus-score-headers score-param))))
1635 (unless (and (eq predicate 'gnus-agent-false)
1636 (not marked-articles))
1637 (let ((arts (list nil)))
1638 (let ((arts-tail arts)
1639 (alist (gnus-agent-load-alist group))
1640 (marked-articles marked-articles))
1641 (while (setq gnus-headers (pop gnus-newsgroup-headers))
1642 (let ((num (mail-header-number gnus-headers)))
1643 ;; Determine if this article is already in the cache
1645 (> num (caar alist)))
1646 (setq alist (cdr alist)))
1648 (unless (and (eq num (caar alist))
1651 ;; Determine if this article was marked for download.
1652 (while (and marked-articles
1653 (> num (car marked-articles)))
1654 (setq marked-articles
1655 (cdr marked-articles)))
1657 ;; When this article is marked, or selected by the
1658 ;; predicate, add it to the download list
1659 (when (or (eq num (car marked-articles))
1661 (or (cdr (assq num gnus-newsgroup-scored))
1662 gnus-summary-default-score)))
1663 (funcall predicate)))
1664 (gnus-agent-append-to-list arts-tail num))))))
1666 (let (fetched-articles)
1667 ;; Fetch all selected articles
1668 (setq gnus-newsgroup-undownloaded
1669 (gnus-sorted-ndifference gnus-newsgroup-undownloaded
1670 (setq fetched-articles (if (cdr arts) (gnus-agent-fetch-articles group (cdr arts)) nil))))
1672 (let ((unfetched-articles (gnus-sorted-ndifference (cdr arts) fetched-articles)))
1673 (if gnus-newsgroup-active
1675 (dolist (article marked-articles)
1676 (when (gnus-summary-goto-subject article nil t)
1677 (gnus-summary-set-agent-mark article t)))
1678 (dolist (article fetched-articles)
1679 (if gnus-agent-mark-unread-after-downloaded
1680 (gnus-summary-mark-article article gnus-unread-mark)))
1681 (dolist (article unfetched-articles)
1682 (gnus-summary-mark-article article gnus-canceled-mark)))
1683 ;; When some, or all, of the marked articles came
1684 ;; from the download mark. Remove that mark. I
1685 ;; didn't do this earlier as I only want to remove
1686 ;; the marks after the fetch is completed.
1688 (dolist (mark gnus-agent-download-marks)
1689 (when (eq mark 'download)
1690 (let ((marked-arts (assq mark (gnus-info-marks
1691 (setq info (gnus-get-info group))))))
1692 (when (cdr marked-arts)
1693 (setq marks (delq marked-arts (gnus-info-marks info)))
1694 (gnus-info-set-marks info marks)))))
1695 (let ((read (gnus-info-read (or info (setq info (gnus-get-info group))))))
1696 (gnus-info-set-read info (gnus-add-to-range read unfetched-articles)))
1698 (gnus-group-update-group group t)
1702 (concat "(gnus-group-set-info '"
1703 (gnus-prin1-to-string info)
1707 ;;; Agent Category Mode
1710 (defvar gnus-category-mode-hook nil
1711 "Hook run in `gnus-category-mode' buffers.")
1713 (defvar gnus-category-line-format " %(%20c%): %g\n"
1714 "Format of category lines.
1716 Valid specifiers include:
1717 %c Topic name (string)
1718 %g The number of groups in the topic (integer)
1720 General format specifiers can also be used. See Info node
1721 `(gnus)Formatting Variables'.")
1723 (defvar gnus-category-mode-line-format "Gnus: %%b"
1724 "The format specification for the category mode line.")
1726 (defvar gnus-agent-short-article 100
1727 "Articles that have fewer lines than this are short.")
1729 (defvar gnus-agent-long-article 200
1730 "Articles that have more lines than this are long.")
1732 (defvar gnus-agent-low-score 0
1733 "Articles that have a score lower than this have a low score.")
1735 (defvar gnus-agent-high-score 0
1736 "Articles that have a score higher than this have a high score.")
1739 ;;; Internal variables.
1741 (defvar gnus-category-buffer "*Agent Category*")
1743 (defvar gnus-category-line-format-alist
1744 `((?c gnus-tmp-name ?s)
1745 (?g gnus-tmp-groups ?d)))
1747 (defvar gnus-category-mode-line-format-alist
1748 `((?u user-defined ?s)))
1750 (defvar gnus-category-line-format-spec nil)
1751 (defvar gnus-category-mode-line-format-spec nil)
1753 (defvar gnus-category-mode-map nil)
1754 (put 'gnus-category-mode 'mode-class 'special)
1756 (unless gnus-category-mode-map
1757 (setq gnus-category-mode-map (make-sparse-keymap))
1758 (suppress-keymap gnus-category-mode-map)
1760 (gnus-define-keys gnus-category-mode-map
1761 "q" gnus-category-exit
1762 "k" gnus-category-kill
1763 "c" gnus-category-copy
1764 "a" gnus-category-add
1765 "p" gnus-category-edit-predicate
1766 "g" gnus-category-edit-groups
1767 "s" gnus-category-edit-score
1768 "l" gnus-category-list
1770 "\C-c\C-i" gnus-info-find-node
1771 "\C-c\C-b" gnus-bug))
1773 (defvar gnus-category-menu-hook nil
1774 "*Hook run after the creation of the menu.")
1776 (defun gnus-category-make-menu-bar ()
1777 (gnus-turn-off-edit-menu 'category)
1778 (unless (boundp 'gnus-category-menu)
1780 gnus-category-menu gnus-category-mode-map ""
1782 ["Add" gnus-category-add t]
1783 ["Kill" gnus-category-kill t]
1784 ["Copy" gnus-category-copy t]
1785 ["Edit predicate" gnus-category-edit-predicate t]
1786 ["Edit score" gnus-category-edit-score t]
1787 ["Edit groups" gnus-category-edit-groups t]
1788 ["Exit" gnus-category-exit t]))
1790 (gnus-run-hooks 'gnus-category-menu-hook)))
1792 (defun gnus-category-mode ()
1793 "Major mode for listing and editing agent categories.
1795 All normal editing commands are switched off.
1796 \\<gnus-category-mode-map>
1797 For more in-depth information on this mode, read the manual
1798 \(`\\[gnus-info-find-node]').
1800 The following commands are available:
1802 \\{gnus-category-mode-map}"
1804 (when (gnus-visual-p 'category-menu 'menu)
1805 (gnus-category-make-menu-bar))
1806 (kill-all-local-variables)
1807 (gnus-simplify-mode-line)
1808 (setq major-mode 'gnus-category-mode)
1809 (setq mode-name "Category")
1810 (gnus-set-default-directory)
1811 (setq mode-line-process nil)
1812 (use-local-map gnus-category-mode-map)
1813 (buffer-disable-undo)
1814 (setq truncate-lines t)
1815 (setq buffer-read-only t)
1816 (gnus-run-hooks 'gnus-category-mode-hook))
1818 (defalias 'gnus-category-position-point 'gnus-goto-colon)
1820 (defun gnus-category-insert-line (category)
1821 (let* ((gnus-tmp-name (format "%s" (car category)))
1822 (gnus-tmp-groups (length (cadddr category))))
1824 (gnus-add-text-properties
1828 (eval gnus-category-line-format-spec))
1829 (list 'gnus-category gnus-tmp-name))))
1831 (defun gnus-enter-category-buffer ()
1832 "Go to the Category buffer."
1834 (gnus-category-setup-buffer)
1835 (gnus-configure-windows 'category)
1836 (gnus-category-prepare))
1838 (defun gnus-category-setup-buffer ()
1839 (unless (get-buffer gnus-category-buffer)
1841 (set-buffer (gnus-get-buffer-create gnus-category-buffer))
1842 (gnus-category-mode))))
1844 (defun gnus-category-prepare ()
1845 (gnus-set-format 'category-mode)
1846 (gnus-set-format 'category t)
1847 (let ((alist gnus-category-alist)
1848 (buffer-read-only nil))
1851 (gnus-category-insert-line (pop alist)))
1852 (goto-char (point-min))
1853 (gnus-category-position-point)))
1855 (defun gnus-category-name ()
1856 (or (intern (get-text-property (gnus-point-at-bol) 'gnus-category))
1857 (error "No category on the current line")))
1859 (defun gnus-category-read ()
1860 "Read the category alist."
1861 (setq gnus-category-alist
1862 (or (gnus-agent-read-file
1863 (nnheader-concat gnus-agent-directory "lib/categories"))
1864 (list (list 'default 'short nil nil)))))
1866 (defun gnus-category-write ()
1867 "Write the category alist."
1868 (setq gnus-category-predicate-cache nil
1869 gnus-category-group-cache nil)
1870 (gnus-make-directory (nnheader-concat gnus-agent-directory "lib"))
1871 (with-temp-file (nnheader-concat gnus-agent-directory "lib/categories")
1872 (prin1 gnus-category-alist (current-buffer))))
1874 (defun gnus-category-edit-predicate (category)
1875 "Edit the predicate for CATEGORY."
1876 (interactive (list (gnus-category-name)))
1877 (let ((info (assq category gnus-category-alist)))
1879 (cadr info) (format "Editing the predicate for category %s" category)
1880 `(lambda (predicate)
1881 (setcar (cdr (assq ',category gnus-category-alist)) predicate)
1882 (gnus-category-write)
1883 (gnus-category-list)))))
1885 (defun gnus-category-edit-score (category)
1886 "Edit the score expression for CATEGORY."
1887 (interactive (list (gnus-category-name)))
1888 (let ((info (assq category gnus-category-alist)))
1891 (format "Editing the score expression for category %s" category)
1893 (setcar (nthcdr 2 (assq ',category gnus-category-alist)) groups)
1894 (gnus-category-write)
1895 (gnus-category-list)))))
1897 (defun gnus-category-edit-groups (category)
1898 "Edit the group list for CATEGORY."
1899 (interactive (list (gnus-category-name)))
1900 (let ((info (assq category gnus-category-alist)))
1902 (cadddr info) (format "Editing the group list for category %s" category)
1904 (setcar (nthcdr 3 (assq ',category gnus-category-alist)) groups)
1905 (gnus-category-write)
1906 (gnus-category-list)))))
1908 (defun gnus-category-kill (category)
1909 "Kill the current category."
1910 (interactive (list (gnus-category-name)))
1911 (let ((info (assq category gnus-category-alist))
1912 (buffer-read-only nil))
1914 (setq gnus-category-alist (delq info gnus-category-alist))
1915 (gnus-category-write)))
1917 (defun gnus-category-copy (category to)
1918 "Copy the current category."
1919 (interactive (list (gnus-category-name) (intern (read-string "New name: "))))
1920 (let ((info (assq category gnus-category-alist)))
1921 (push (list to (gnus-copy-sequence (cadr info))
1922 (gnus-copy-sequence (caddr info)) nil)
1923 gnus-category-alist)
1924 (gnus-category-write)
1925 (gnus-category-list)))
1927 (defun gnus-category-add (category)
1928 "Create a new category."
1929 (interactive "SCategory name: ")
1930 (when (assq category gnus-category-alist)
1931 (error "Category %s already exists" category))
1932 (push (list category 'false nil nil)
1933 gnus-category-alist)
1934 (gnus-category-write)
1935 (gnus-category-list))
1937 (defun gnus-category-list ()
1938 "List all categories."
1940 (gnus-category-prepare))
1942 (defun gnus-category-exit ()
1943 "Return to the group buffer."
1945 (kill-buffer (current-buffer))
1946 (gnus-configure-windows 'group t))
1948 ;; To avoid having 8-bit characters in the source file.
1949 (defvar gnus-category-not (list '! 'not (intern (format "%c" 172))))
1951 (defvar gnus-category-predicate-alist
1952 '((spam . gnus-agent-spam-p)
1953 (short . gnus-agent-short-p)
1954 (long . gnus-agent-long-p)
1955 (low . gnus-agent-low-scored-p)
1956 (high . gnus-agent-high-scored-p)
1957 (read . gnus-agent-read-p)
1958 (true . gnus-agent-true)
1959 (false . gnus-agent-false))
1960 "Mapping from short score predicate symbols to predicate functions.")
1962 (defun gnus-agent-spam-p ()
1963 "Say whether an article is spam or not."
1964 (unless gnus-agent-spam-hashtb
1965 (setq gnus-agent-spam-hashtb (gnus-make-hashtable 1000)))
1966 (if (not (equal (mail-header-references gnus-headers) ""))
1968 (let ((string (gnus-simplify-subject (mail-header-subject gnus-headers))))
1970 (gnus-gethash string gnus-agent-spam-hashtb)
1971 (gnus-sethash string t gnus-agent-spam-hashtb)))))
1973 (defun gnus-agent-short-p ()
1974 "Say whether an article is short or not."
1975 (< (mail-header-lines gnus-headers) gnus-agent-short-article))
1977 (defun gnus-agent-long-p ()
1978 "Say whether an article is long or not."
1979 (> (mail-header-lines gnus-headers) gnus-agent-long-article))
1981 (defun gnus-agent-low-scored-p ()
1982 "Say whether an article has a low score or not."
1983 (< gnus-score gnus-agent-low-score))
1985 (defun gnus-agent-high-scored-p ()
1986 "Say whether an article has a high score or not."
1987 (> gnus-score gnus-agent-high-score))
1989 (defun gnus-agent-read-p ()
1990 "Say whether an article is read or not."
1991 (gnus-member-of-range (mail-header-number gnus-headers)
1992 (gnus-info-read (gnus-get-info gnus-newsgroup-name))))
1994 (defun gnus-category-make-function (cat)
1995 "Make a function from category CAT."
1996 (let ((func (gnus-category-make-function-1 cat)))
1997 (if (and (= (length func) 1)
1998 (symbolp (car func)))
2000 (gnus-byte-compile `(lambda () ,func)))))
2002 (defun gnus-agent-true ()
2006 (defun gnus-agent-false ()
2010 (defun gnus-category-make-function-1 (cat)
2011 "Make a function from category CAT."
2013 ;; Functions are just returned as is.
2015 (gnus-functionp cat))
2016 `(,(or (cdr (assq cat gnus-category-predicate-alist))
2018 ;; More complex category.
2021 ((memq (car cat) '(& and))
2023 ((memq (car cat) '(| or))
2025 ((memq (car cat) gnus-category-not)
2027 ,@(mapcar 'gnus-category-make-function-1 (cdr cat))))
2029 (error "Unknown category type: %s" cat))))
2031 (defun gnus-get-predicate (predicate)
2032 "Return the predicate for CATEGORY."
2033 (or (cdr (assoc predicate gnus-category-predicate-cache))
2034 (let ((func (gnus-category-make-function predicate)))
2035 (setq gnus-category-predicate-cache
2036 (nconc gnus-category-predicate-cache
2037 (list (cons predicate func))))
2040 (defun gnus-predicate-implies-unread (predicate)
2041 "Say whether PREDICATE implies unread articles only.
2042 It is okay to miss some cases, but there must be no false positives.
2043 That is, if this function returns true, then indeed the predicate must
2044 return only unread articles."
2045 ;; Todo: make this work in more cases.
2046 (equal predicate '(not read)))
2048 (defun gnus-group-category (group)
2049 "Return the category GROUP belongs to."
2050 (unless gnus-category-group-cache
2051 (setq gnus-category-group-cache (gnus-make-hashtable 1000))
2052 (let ((cs gnus-category-alist)
2054 (while (setq cat (pop cs))
2055 (setq groups (cadddr cat))
2057 (gnus-sethash (pop groups) cat gnus-category-group-cache)))))
2058 (or (gnus-gethash group gnus-category-group-cache)
2059 (assq 'default gnus-category-alist)))
2061 (defun gnus-agent-expire (&optional articles group force)
2062 "Expire all old articles.
2063 If you want to force expiring of certain articles, this function can
2064 take ARTICLES, GROUP and FORCE parameters as well.
2066 The articles on which the expiration process runs are selected as follows:
2067 if ARTICLES is null, all read and unmarked articles.
2068 if ARTICLES is t, all articles.
2069 if ARTICLES is a list, just those articles.
2070 Setting GROUP will limit expiration to that group.
2071 FORCE is equivalent to setting gnus-agent-expire-days to zero(0)."
2074 (if (or (not (eq articles t))
2075 (yes-or-no-p (concat "Are you sure that you want to expire all articles in " (if group group "every agentized group") ".")))
2076 (let ((methods (if group
2077 (list (gnus-find-method-for-group group))
2078 gnus-agent-covered-methods))
2079 (day (if (numberp gnus-agent-expire-days)
2080 (- (time-to-days (current-time)) gnus-agent-expire-days)
2082 gnus-command-method sym arts pos
2083 history overview file histories elem art nov-file low info
2084 unreads marked article orig lowest highest found days)
2086 (setq overview (gnus-get-buffer-create " *expire overview*"))
2088 (while (setq gnus-command-method (pop methods))
2089 (when (file-exists-p (gnus-agent-lib-file "active"))
2091 (nnheader-insert-file-contents (gnus-agent-lib-file "active"))
2092 (gnus-active-to-gnus-format
2094 (setq orig (gnus-make-hashtable
2095 (count-lines (point-min) (point-max))))))
2096 (dolist (expiring-group (gnus-groups-from-server gnus-command-method))
2098 (equal group expiring-group))
2100 (gnus-agent-directory)
2101 (gnus-agent-group-path expiring-group) "/"))
2103 (gnus-gethash-safe expiring-group orig)))
2105 (gnus-agent-load-alist expiring-group)
2106 (gnus-message 5 "Expiring articles in %s" expiring-group)
2107 (let* ((info (gnus-get-info expiring-group))
2108 (alist gnus-agent-article-alist)
2110 (list (caar (last alist)))))
2111 (unreads ;; Articles that are excluded from the expiration process
2112 (cond (gnus-agent-expire-all
2113 ;; All articles are marked read by global decree
2116 ;; All articles are marked read by function parameter
2119 ;; Unread articles are marked protected from expiration
2120 ;; Don't call gnus-list-of-unread-articles as it returns articles that have not been fetched into the agent.
2121 (ignore-errors (gnus-agent-unread-articles expiring-group)))
2123 ;; All articles EXCEPT those named by the caller are protected from expiration
2124 (gnus-sorted-difference (gnus-uncompress-range (cons (caar alist) (caar (last alist)))) (sort articles '<)))))
2125 (marked ;; More articles that are exluded from the expiration process
2126 (cond (gnus-agent-expire-all
2127 ;; All articles are unmarked by global decree
2130 ;; All articles are unmarked by function parameter
2133 ;; All articles may as well be unmarked as the unreads list already names the articles we are going to keep
2136 ;; Ticked and/or dormant articles are excluded from expiration
2138 (gnus-uncompress-range
2139 (cdr (assq 'tick (gnus-info-marks info))))
2140 (gnus-uncompress-range
2142 (gnus-info-marks info))))))))
2143 (nov-file (concat dir ".overview"))
2149 ;; The normal article alist contains elements that look like (article# . fetch_date)
2150 ;; I need to combine other information with this list. For example, a flag indicating that a particular article MUST BE KEPT.
2151 ;; To do this, I'm going to transform the elements to look like (article# fetch_date keep_flag NOV_entry_marker)
2152 ;; Later, I'll reverse the process to generate the expired article alist.
2154 ;; Convert the alist elements to (article# fetch_date nil nil).
2155 (setq dlist (mapcar (lambda (e) (list (car e) (cdr e) nil nil)) alist))
2157 ;; Convert the keep lists to elements that look like (article# nil keep_flag nil) then append it to the expanded dlist
2158 ;; These statements are sorted by ascending precidence of the keep_flag.
2159 (setq dlist (nconc dlist
2160 (mapcar (lambda (e) (list e nil 'unread nil)) unreads)))
2161 (setq dlist (nconc dlist
2162 (mapcar (lambda (e) (list e nil 'marked nil)) marked)))
2163 (setq dlist (nconc dlist
2164 (mapcar (lambda (e) (list e nil 'special nil)) specials)))
2166 (set-buffer overview)
2168 (when (file-exists-p nov-file)
2169 (gnus-message 7 "gnus-agent-expire: Loading overview...")
2170 (nnheader-insert-file-contents nov-file)
2171 (goto-char (point-min))
2174 (while (< (setq p (point)) (point-max))
2176 ;; If I successfully read an integer (the plus zero ensures a numeric type), prepend a marker entry to the list
2177 (push (list (+ 0 (read (current-buffer))) nil nil (set-marker (make-marker) p)) dlist)
2179 (gnus-message 1 "gnus-agent-expire: read error occurred when reading expression at %s in %s. Skipping to next line." (point) nov-file)))
2180 ;; Whether I succeeded, or failed, it doesn't matter. Move to the next line then try again.
2182 (gnus-message 7 "gnus-agent-expire: Loading overview... Done"))
2183 (set-buffer-modified-p nil)
2185 ;; At this point, all of the information is in dlist. The only problem is that much of it is spread across multiple entries. Sort then MERGE!!
2186 (gnus-message 7 "gnus-agent-expire: Sorting entries... ")
2187 (let ((special 0) ; If two entries have the same article-number then sort by ascending keep_flag.
2193 (cond ((< (nth 0 a) (nth 0 b))
2195 ((> (nth 0 a) (nth 0 b))
2198 (let ((a (or (symbol-value (nth 2 a)) 3))
2199 (b (or (symbol-value (nth 2 b)) 3)))
2201 (gnus-message 7 "gnus-agent-expire: Sorting entries... Done")
2202 (gnus-message 7 "gnus-agent-expire: Merging entries... ")
2203 (let ((dlist dlist))
2204 (while (cdr dlist) ; I'm not at the end-of-list
2205 (if (eq (caar dlist) (caadr dlist))
2206 (let ((first (cdr (car dlist)))
2207 (secnd (cdr (cadr dlist))))
2208 (setcar first (or (car first) (car secnd))) ; fetch_date
2209 (setq first (cdr first)
2211 (setcar first (or (car first) (car secnd))) ; Keep_flag
2212 (setq first (cdr first)
2214 (setcar first (or (car first) (car secnd))) ; NOV_entry_marker
2216 (setcdr dlist (cddr dlist)))
2217 (setq dlist (cdr dlist)))))
2218 (gnus-message 7 "gnus-agent-expire: Merging entries... Done")
2220 (let* ((len (float (length dlist)))
2224 (let ((new-completed (truncate (* 100.0 (/ (setq cnt (1+ cnt)) len)))))
2225 (when (> new-completed completed)
2226 (setq completed new-completed)
2227 (gnus-message 9 "%3d%% completed..." completed)))
2228 (let* ((entry (car dlist))
2229 (article-number (nth 0 entry))
2230 (fetch-date (nth 1 entry))
2231 (keep (nth 2 entry))
2232 (marker (nth 3 entry)))
2235 ;; Kept articles are unread, marked, or special.
2238 (unless (file-exists-p (concat dir (number-to-string article-number)))
2239 (setf (nth 1 entry) nil)
2240 (gnus-message 3 "gnus-agent-expire cleared download flag on article %d as the cached article file is missing." (caar dlist)))
2242 (gnus-message 1 "gnus-agent-expire detected a missing NOV entry. Run gnus-agent-regenerate-group to restore it.")))
2243 (gnus-agent-append-to-list tail-alist (cons article-number fetch-date)))
2245 ;; The following articles are READ, UNMARKED, and ORDINARY.
2246 ;; See if they can be EXPIRED!!!
2249 ((not (integerp fetch-date))
2250 'read) ;; never fetched article (may expire right now)
2251 ((not (file-exists-p (concat dir (number-to-string article-number))))
2252 (setf (nth 1 entry) nil)
2253 'externally-expired) ;; Can't find the cached article. Handle case as though this article was never fetched.
2255 ;; We now have the arrival day, so we see
2256 ;; whether it's old enough to be expired.
2261 (days gnus-agent-expire-days))
2262 (while (and (not found)
2264 (when (eq 0 (string-match (caar days) expiring-group))
2265 (setq found (cadar days)))
2272 ;; I found some reason to expire this entry.
2274 (let ((actions nil))
2275 (when (memq type '(forced expired))
2276 (ignore-errors ; Just being paranoid.
2277 (delete-file (concat dir (number-to-string article-number)))
2278 (push "expired cached article" actions))
2279 (setf (nth 1 entry) nil)
2283 (push "NOV entry removed" actions)
2287 ;; If considering all articles is set, I can only expire article IDs that are no longer in the active range.
2288 (if (and gnus-agent-consider-all-articles
2289 (>= article-number (car active)))
2290 ;; I have to keep this ID in the alist
2291 (gnus-agent-append-to-list tail-alist (cons article-number fetch-date))
2292 (push (format "Removed %s article number from article alist" type) actions))
2294 (gnus-message 7 "gnus-agent-expire: Article %d: %s" article-number (mapconcat 'identity actions ", "))))
2296 (gnus-agent-append-to-list tail-alist (cons article-number fetch-date)))
2299 ;; Clean up markers as I want to recycle this buffer over several groups.
2301 (set-marker marker nil))
2303 (setq dlist (cdr dlist))))
2305 (setq alist (cdr alist))
2307 (let ((inhibit-quit t))
2308 (unless (equal alist gnus-agent-article-alist)
2309 (setq gnus-agent-article-alist alist)
2310 (gnus-agent-save-alist expiring-group))
2312 (when (buffer-modified-p)
2313 (gnus-make-directory dir)
2314 (write-region-as-coding-system
2315 gnus-agent-file-coding-system
2316 (point-min) (point-max) nov-file
2318 ;; clear the modified flag as that I'm not confused by its status on the next pass through this routine.
2319 (set-buffer-modified-p nil))
2321 (when (eq articles t)
2322 (gnus-summary-update-info)))))))))))
2323 (kill-buffer overview)))))
2324 (gnus-message 4 "Expiry...done"))
2327 (defun gnus-agent-batch ()
2328 "Start Gnus, send queue and fetch session."
2330 (let ((init-file-user "")
2331 (gnus-always-read-dribble-file t))
2333 (let ((gnus-agent-confirmation-function 'gnus-agent-batch-confirmation))
2334 (gnus-group-send-queue)
2335 (gnus-agent-fetch-session)))
2337 (defun gnus-agent-unread-articles (group)
2338 (let* ((read (gnus-info-read (gnus-get-info group)))
2339 (known (gnus-agent-load-alist group))
2341 (tail-unread unread))
2342 (while (and known read)
2343 (let ((candidate (car (pop known))))
2344 (while (let* ((range (car read))
2345 (min (if (numberp range) range (car range)))
2346 (max (if (numberp range) range (cdr range))))
2347 (cond ((or (not min)
2349 (gnus-agent-append-to-list tail-unread candidate)
2354 (gnus-agent-append-to-list tail-unread (car (pop known))))
2357 (defun gnus-agent-uncached-articles (articles group &optional cached-header)
2358 "Constructs sublist of ARTICLES that excludes those articles ids in GROUP that have already been fetched.
2359 If CACHED-HEADER is nil, articles are only excluded if the article itself has been fetched."
2361 ;; Logically equivalent to: (gnus-sorted-difference articles (mapcar 'car gnus-agent-article-alist))
2362 ;; Functionally, I don't need to construct a temp list using mapcar.
2364 (if (gnus-agent-load-alist group)
2365 (let* ((ref gnus-agent-article-alist)
2367 (uncached (list nil))
2368 (tail-uncached uncached))
2369 (while (and ref arts)
2370 (let ((v1 (car arts))
2372 (cond ((< v1 v2) ; the article (v1) does not appear in the reference list
2373 (gnus-agent-append-to-list tail-uncached v1)
2376 (unless (or cached-header (cdar ref)) ; the article (v1) is already cached
2377 (gnus-agent-append-to-list tail-uncached v1))
2380 (t ; the reference article (v2) preceeds the list being filtered
2383 (gnus-agent-append-to-list tail-uncached (pop arts)))
2385 ;; if gnus-agent-load-alist fails, no articles are cached.
2388 (defun gnus-agent-retrieve-headers (articles group &optional fetch-old)
2390 (gnus-agent-create-buffer)
2391 (let ((gnus-decode-encoded-word-function 'identity)
2392 (file (gnus-agent-article-name ".overview" group))
2393 cached-articles uncached-articles)
2394 (gnus-make-directory (nnheader-translate-file-chars
2395 (file-name-directory file) t))
2397 ;; Populate temp buffer with known headers
2398 (when (file-exists-p file)
2399 (with-current-buffer gnus-agent-overview-buffer
2401 (let ((nnheader-file-coding-system
2402 gnus-agent-file-coding-system))
2403 (nnheader-insert-nov-file file (car articles)))))
2405 (if (setq uncached-articles (gnus-agent-uncached-articles articles group t))
2407 ;; Populate nntp-server-buffer with uncached headers
2408 (set-buffer nntp-server-buffer)
2410 (let (gnus-agent-cache) ; Turn off agent cache
2411 (cond ((not (eq 'nov (gnus-retrieve-headers
2412 uncached-articles group fetch-old)))
2413 (nnvirtual-convert-headers))
2414 ((eq 'nntp (car gnus-current-select-method))
2415 ;; The author of gnus-get-newsgroup-headers-xover reports that the XOVER command
2416 ;; is commonly unreliable. The problem is that recently posted articles may not
2417 ;; be entered into the NOV database in time to respond to my XOVER query.
2419 ;; I'm going to use his assumption that the NOV database is updated in order
2420 ;; of ascending article ID. Therefore, a response containing article ID N
2421 ;; implies that all articles from 1 to N-1 are up-to-date. Therefore,
2422 ;; missing articles in that range have expired.
2424 (set-buffer nntp-server-buffer)
2425 (let* ((fetched-articles (list nil))
2426 (tail-fetched-articles fetched-articles)
2427 (min (cond ((numberp fetch-old)
2428 (max 1 (- (car articles) fetch-old)))
2433 (max (car (last articles))))
2435 ;; Get the list of articles that were fetched
2436 (goto-char (point-min))
2437 (let ((pm (point-max)))
2438 (while (< (point) pm)
2439 (when (looking-at "[0-9]+\t")
2440 (gnus-agent-append-to-list tail-fetched-articles (read (current-buffer))))
2443 ;; Clip this list to the headers that will actually be returned
2444 (setq fetched-articles (gnus-list-range-intersection
2445 (cdr fetched-articles)
2448 ;; Clip the uncached articles list to exclude IDs after the last FETCHED header.
2449 ;; The excluded IDs may be fetchable using HEAD.
2450 (if (car tail-fetched-articles)
2451 (setq uncached-articles (gnus-list-range-intersection
2453 (cons (car uncached-articles) (car tail-fetched-articles)))))
2455 ;; Create the list of articles that were "successfully" fetched. Success, in
2456 ;; this case, means that the ID should not be fetched again. In the case of
2457 ;; an expired article, the header will not be fetched.
2458 (setq uncached-articles (gnus-sorted-nunion fetched-articles uncached-articles))
2461 ;; Erase the temp buffer
2462 (set-buffer gnus-agent-overview-buffer)
2465 ;; Copy the nntp-server-buffer to the temp buffer
2466 (set-buffer nntp-server-buffer)
2467 (copy-to-buffer gnus-agent-overview-buffer (point-min) (point-max))
2469 ;; Merge the temp buffer with the known headers (found on disk in FILE) into the nntp-server-buffer
2470 (when (and uncached-articles (file-exists-p file))
2471 (gnus-agent-braid-nov group uncached-articles file))
2473 ;; Save the new set of known headers to FILE
2474 (set-buffer nntp-server-buffer)
2475 (gnus-agent-check-overview-buffer)
2476 (write-region-as-coding-system
2477 gnus-agent-file-coding-system
2478 (point-min) (point-max) file nil 'silent)
2480 ;; Update the group's article alist to include the newly fetched articles.
2481 (gnus-agent-load-alist group)
2482 (gnus-agent-save-alist group uncached-articles nil)
2485 ;; Copy the temp buffer to the nntp-server-buffer
2486 (set-buffer nntp-server-buffer)
2488 (insert-buffer-substring gnus-agent-overview-buffer)))
2491 (not (numberp fetch-old)))
2492 t ; Don't remove anything.
2493 (nnheader-nov-delete-outside-range
2494 (if fetch-old (max 1 (- (car articles) fetch-old))
2496 (car (last articles)))
2501 (defun gnus-agent-request-article (article group)
2502 "Retrieve ARTICLE in GROUP from the agent cache."
2503 (let* ((gnus-command-method (gnus-find-method-for-group group))
2505 (gnus-agent-directory)
2506 (gnus-agent-group-path group) "/"
2507 (number-to-string article)))
2508 (buffer-read-only nil))
2509 (when (and (file-exists-p file)
2510 (> (nth 7 (file-attributes file)) 0))
2512 (gnus-kill-all-overlays)
2513 (insert-file-contents-as-coding-system gnus-cache-coding-system file)
2516 (defun gnus-agent-regenerate-group (group &optional reread)
2517 "Regenerate GROUP. If REREAD is t, all articles in the .overview are marked as unread. If REREAD is not nil, downloaded articles are marked as unread."
2518 (gnus-message 5 "Regenerating in %s" group)
2519 (let* ((gnus-command-method (or gnus-command-method
2520 (gnus-find-method-for-group group)))
2521 (file (gnus-agent-article-name ".overview" group))
2522 (dir (file-name-directory file))
2524 (downloaded (if (file-exists-p dir)
2525 (sort (mapcar (lambda (name) (string-to-int name))
2526 (directory-files dir nil "^[0-9]+$" t))
2528 (progn (gnus-make-directory dir) nil)))
2533 (mm-with-unibyte-buffer
2534 (if (file-exists-p file)
2535 (let ((nnheader-file-coding-system
2536 gnus-agent-file-coding-system))
2537 (nnheader-insert-file-contents file)))
2538 (set-buffer-modified-p nil)
2540 ;; Load the article IDs found in the overview file. As a side-effect, validate the file contents.
2544 (goto-char (point-min))
2545 (while (< (point) (point-max))
2546 (cond ((looking-at "[0-9]+\t")
2547 (push (read (current-buffer)) nov-arts)
2549 (let ((l1 (car nov-arts))
2550 (l2 (cadr nov-arts)))
2554 (gnus-message 3 "gnus-agent-regenerate-group: NOV entries are NOT in ascending order.")
2555 ;; Don't sort now as I haven't verified that every line begins with a number
2559 (gnus-message 4 "gnus-agent-regenerate-group: NOV entries contained duplicate of article %s. Duplicate deleted." l1)
2563 (gnus-message 1 "gnus-agent-regenerate-group: NOV entries contained line that did not begin with an article number. Deleted line.")
2564 (gnus-delete-line))))
2567 (gnus-message 5 "gnus-agent-regenerate-group: Sorting NOV entries into ascending order.")
2568 (sort-numeric-fields 1 (point-min) (point-max))
2569 (setq nov-arts nil)))))
2570 (gnus-agent-check-overview-buffer)
2572 ;; Construct a new article alist whose nodes match every header in the .overview file.
2573 ;; As a side-effect, missing headers are reconstructed from the downloaded article file.
2574 (while (or downloaded nov-arts)
2575 (cond ((and downloaded
2577 (> (car downloaded) (car nov-arts))))
2578 ;; This entry is missing from the overview file
2579 (gnus-message 3 "Regenerating NOV %s %d..." group (car downloaded))
2580 (let ((file (concat dir (number-to-string (car downloaded)))))
2581 (mm-with-unibyte-buffer
2582 (nnheader-insert-file-contents file)
2583 (nnheader-remove-body)
2584 (setq header (nnheader-parse-naked-head)))
2585 (mail-header-set-number header (car downloaded))
2587 (let ((key (concat "^" (int-to-string (car nov-arts)) "\t")))
2588 (or (re-search-backward key nil t)
2589 (re-search-forward key))
2591 (goto-char (point-min)))
2592 (nnheader-insert-nov header))
2593 (setq nov-arts (cons (car downloaded) nov-arts)))
2594 ((eq (car downloaded) (car nov-arts))
2595 ;; This entry in the overview has been downloaded
2596 (push (cons (car downloaded) (time-to-days (nth 5 (file-attributes (concat dir (number-to-string (car downloaded))))))) alist)
2600 ;; This entry in the overview has not been downloaded
2601 (push (cons (car nov-arts) nil) alist)
2604 ;; When gnus-agent-consider-all-articles is set, gnus-agent-regenerate-group should NOT remove article IDs
2605 ;; from the alist. Those IDs serve as markers to indicate that an attempt has been made to fetch that
2606 ;; article's header.
2608 ;; When gnus-agent-consider-all-articles is NOT set, gnus-agent-regenerate-group can remove the article
2609 ;; ID of every article (with the exception of the last ID in the list - it's special) that no longer appears in the overview.
2610 ;; In this situtation, the last article ID in the list implies that it, and every article ID preceeding it,
2611 ;; have been fetched from the server.
2612 (if gnus-agent-consider-all-articles
2613 ;; Restore all article IDs that were not found in the overview file.
2614 (let* ((n (cons nil alist))
2616 (o (gnus-agent-load-alist group)))
2618 (let ((nID (caadr n))
2621 (setq n (setcdr n (list (list oID))))
2624 (setcdr n (cons (list oID) (cdr n)))
2631 (setq alist (cdr merged)))
2632 ;; Restore the last article ID if it is not already in the new alist
2633 (let ((n (last alist))
2634 (o (last (gnus-agent-load-alist group))))
2637 (push (cons (caar o) nil) alist)))
2638 ((< (caar n) (caar o))
2639 (setcdr n (list (car o)))))))
2641 (let ((inhibit-quit t))
2642 (if (setq regenerated (buffer-modified-p))
2643 (write-region-as-coding-system
2644 gnus-agent-file-coding-system
2645 (point-min) (point-max) file nil 'silent))
2647 (setq regenerated (or regenerated
2648 (and reread gnus-agent-article-alist)
2649 (not (equal alist gnus-agent-article-alist)))
2652 (setq gnus-agent-article-alist alist)
2655 (gnus-agent-save-alist group)))
2658 (when (and reread gnus-agent-article-alist)
2659 (gnus-make-ascending-articles-unread
2661 (delq nil (mapcar (function (lambda (c)
2662 (cond ((eq reread t)
2666 gnus-agent-article-alist)))
2668 (when (gnus-buffer-live-p gnus-group-buffer)
2669 (gnus-group-update-group group t)
2676 (defun gnus-agent-regenerate (&optional clean reread)
2677 "Regenerate all agent covered files.
2678 If CLEAN, don't read existing active files."
2681 (gnus-message 4 "Regenerating Gnus agent files...")
2682 (dolist (gnus-command-method gnus-agent-covered-methods)
2683 (let ((active-file (gnus-agent-lib-file "active"))
2684 active-hashtb active-changed
2686 (gnus-make-directory (file-name-directory active-file))
2688 (setq active-hashtb (gnus-make-hashtable 1000))
2689 (mm-with-unibyte-buffer
2690 (if (file-exists-p active-file)
2691 (let ((nnheader-file-coding-system
2692 gnus-agent-file-coding-system))
2693 (nnheader-insert-file-contents active-file))
2694 (setq active-changed t))
2695 (gnus-active-to-gnus-format
2696 nil (setq active-hashtb
2697 (gnus-make-hashtable
2698 (count-lines (point-min) (point-max)))))))
2699 (dolist (group (gnus-groups-from-server gnus-command-method))
2700 (setq regenerated (or (gnus-agent-regenerate-group group reread)
2702 (let ((min (or (caar gnus-agent-article-alist) 1))
2703 (max (or (caar (last gnus-agent-article-alist)) 0))
2704 (active (gnus-gethash-safe (gnus-group-real-name group)
2706 (read (gnus-info-read (gnus-get-info group))))
2709 (setq active (cons min max)
2711 (gnus-sethash group active active-hashtb))
2712 (when (> (car active) min)
2714 (setq active-changed t))
2715 (when (< (cdr active) max)
2717 (setq active-changed t)))))
2718 (when active-changed
2719 (setq regenerated t)
2720 (gnus-message 4 "Regenerate %s" active-file)
2721 (let ((nnmail-active-file-coding-system gnus-agent-file-coding-system))
2722 (gnus-write-active-file active-file active-hashtb)))))
2723 (gnus-message 4 "Regenerating Gnus agent files...done")
2726 (defun gnus-agent-go-online (&optional force)
2727 "Switch servers into online status."
2728 (interactive (list t))
2729 (dolist (server gnus-opened-servers)
2730 (when (eq (nth 1 server) 'offline)
2731 (if (if (eq force 'ask)
2733 (format "Switch %s:%s into online status? "
2734 (caar server) (cadar server)))
2736 (setcar (nthcdr 1 server) 'close)))))
2738 (defun gnus-agent-toggle-group-plugged (group)
2739 "Toggle the status of the server of the current group."
2740 (interactive (list (gnus-group-group-name)))
2741 (let* ((method (gnus-find-method-for-group group))
2742 (status (cadr (assoc method gnus-opened-servers))))
2743 (if (eq status 'offline)
2744 (gnus-server-set-status method 'closed)
2745 (gnus-close-server method)
2746 (gnus-server-set-status method 'offline))
2747 (message "Turn %s:%s from %s to %s." (car method) (cadr method)
2748 (if (eq status 'offline) 'offline 'online)
2749 (if (eq status 'offline) 'online 'offline))))
2751 (defun gnus-agent-group-covered-p (group)
2752 (member (gnus-group-method group)
2753 gnus-agent-covered-methods))
2755 (provide 'gnus-agent)
2757 ;;; gnus-agent.el ends here