1 ;;; gnus-agent.el --- unplugged support for Gnus
2 ;; Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003
3 ;; Free Software Foundation, Inc.
5 ;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
6 ;; This file is part of GNU Emacs.
8 ;; GNU Emacs is free software; you can redistribute it and/or modify
9 ;; it under the terms of the GNU General Public License as published by
10 ;; the Free Software Foundation; either version 2, or (at your option)
13 ;; GNU Emacs is distributed in the hope that it will be useful,
14 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
15 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 ;; GNU General Public License for more details.
18 ;; You should have received a copy of the GNU General Public License
19 ;; along with GNU Emacs; see the file COPYING. If not, write to the
20 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
21 ;; Boston, MA 02111-1307, USA.
36 (if (featurep 'xemacs)
42 (autoload 'gnus-server-update-server "gnus-srvr")
43 (autoload 'gnus-agent-customize-category "gnus-cus")
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-fetched-hook nil
62 "Hook run when finished fetching articles."
66 (defcustom gnus-agent-handle-level gnus-level-subscribed
67 "Groups on levels higher than this variable will be ignored by the Agent."
71 (defcustom gnus-agent-expire-days 7
72 "Read articles older than this will be expired.
73 If you wish to disable Agent expiring, see `gnus-agent-enable-expiration'."
75 :type '(number :tag "days"))
77 (defcustom gnus-agent-expire-all nil
78 "If non-nil, also expire unread, ticked and dormant articles.
79 If nil, only read articles will be expired."
83 (defcustom gnus-agent-group-mode-hook nil
84 "Hook run in Agent group minor modes."
88 ;; Extracted from gnus-xmas-redefine in order to preserve user settings
89 (when (featurep 'xemacs)
90 (add-hook 'gnus-agent-group-mode-hook 'gnus-xmas-agent-group-menu-add))
92 (defcustom gnus-agent-summary-mode-hook nil
93 "Hook run in Agent summary minor modes."
97 ;; Extracted from gnus-xmas-redefine in order to preserve user settings
98 (when (featurep 'xemacs)
99 (add-hook 'gnus-agent-summary-mode-hook 'gnus-xmas-agent-summary-menu-add))
101 (defcustom gnus-agent-server-mode-hook nil
102 "Hook run in Agent summary minor modes."
106 ;; Extracted from gnus-xmas-redefine in order to preserve user settings
107 (when (featurep 'xemacs)
108 (add-hook 'gnus-agent-server-mode-hook 'gnus-xmas-agent-server-menu-add))
110 (defcustom gnus-agent-confirmation-function 'y-or-n-p
111 "Function to confirm when error happens."
116 (defcustom gnus-agent-synchronize-flags 'ask
117 "Indicate if flags are synchronized when you plug in.
118 If this is `ask' the hook will query the user."
120 :type '(choice (const :tag "Always" t)
121 (const :tag "Never" nil)
122 (const :tag "Ask" ask))
125 (defcustom gnus-agent-go-online 'ask
126 "Indicate if offline servers go online when you plug in.
127 If this is `ask' the hook will query the user."
129 :type '(choice (const :tag "Always" t)
130 (const :tag "Never" nil)
131 (const :tag "Ask" ask))
134 (defcustom gnus-agent-mark-unread-after-downloaded t
135 "Indicate whether to mark articles unread after downloaded."
140 (defcustom gnus-agent-download-marks '(download)
141 "Marks for downloading."
143 :type '(repeat (symbol :tag "Mark"))
146 (defcustom gnus-agent-consider-all-articles nil
147 "When non-`nil', the agent will let the agent predicate decide
148 whether articles need to be downloaded or not, for all articles. When
149 `nil', the default, the agent will only let the predicate decide
150 whether unread articles are downloaded or not. If you enable this,
151 groups with large active ranges may open slower and you may also want
152 to look into the agent expiry settings to block the expiration of
153 read articles as they would just be downloaded again."
158 (defcustom gnus-agent-max-fetch-size 10000000 ;; 10 Mb
159 "Chunk size for `gnus-agent-fetch-session'.
160 The function will split its article fetches into chunks smaller than
165 (defcustom gnus-agent-enable-expiration 'ENABLE
166 "The default expiration state for each group.
167 When set to ENABLE, the default, `gnus-agent-expire' will expire old
168 contents from a group's local storage. This value may be overridden
169 to disable expiration in specific categories, topics, and groups. Of
170 course, you could change gnus-agent-enable-expiration to DISABLE then
171 enable expiration per categories, topics, and groups."
173 :type '(radio (const :format "Enable " ENABLE)
174 (const :format "Disable " DISABLE)))
176 (defcustom gnus-agent-expire-unagentized-dirs t
177 "*Whether expiration should expire in unagentized directories.
178 Have gnus-agent-expire scan the directories under
179 \(gnus-agent-directory) for groups that are no longer agentized.
180 When found, offer to remove them."
184 ;;; Internal variables
186 (defvar gnus-agent-history-buffers nil)
187 (defvar gnus-agent-buffer-alist nil)
188 (defvar gnus-agent-article-alist nil
189 "An assoc list identifying the articles whose headers have been fetched.
190 If successfully fetched, these headers will be stored in the group's overview
191 file. The key of each assoc pair is the article ID, the value of each assoc
192 pair is a flag indicating whether the identified article has been downloaded
193 \(gnus-agent-fetch-articles sets the value to the day of the download).
195 1) The last element of this list can not be expired as some
196 routines (for example, get-agent-fetch-headers) use the last
197 value to track which articles have had their headers retrieved.
198 2) The function `gnus-agent-regenerate' may destructively modify the value.")
199 (defvar gnus-agent-group-alist nil)
200 (defvar gnus-category-alist nil)
201 (defvar gnus-agent-current-history nil)
202 (defvar gnus-agent-overview-buffer nil)
203 (defvar gnus-category-predicate-cache nil)
204 (defvar gnus-category-group-cache nil)
205 (defvar gnus-agent-spam-hashtb nil)
206 (defvar gnus-agent-file-name nil)
207 (defvar gnus-agent-send-mail-function nil)
208 (defvar gnus-agent-file-coding-system 'raw-text)
209 (defvar gnus-agent-file-loading-cache nil)
210 (defvar gnus-agent-file-header-cache nil)
212 (defvar gnus-agent-auto-agentize-methods '(nntp nnimap)
213 "Initially, all servers from these methods are agentized.
214 The user may remove or add servers using the Server buffer. See Info
215 node `(gnus)Server Buffer'.")
218 (defvar gnus-headers)
225 (defun gnus-open-agent ()
227 (gnus-agent-read-servers)
229 (gnus-agent-create-buffer)
230 (add-hook 'gnus-group-mode-hook 'gnus-agent-mode)
231 (add-hook 'gnus-summary-mode-hook 'gnus-agent-mode)
232 (add-hook 'gnus-server-mode-hook 'gnus-agent-mode))
234 (defun gnus-agent-create-buffer ()
235 (if (gnus-buffer-live-p gnus-agent-overview-buffer)
237 (setq gnus-agent-overview-buffer
238 (gnus-get-buffer-create " *Gnus agent overview*"))
239 (with-current-buffer gnus-agent-overview-buffer
240 (mm-enable-multibyte))
243 (gnus-add-shutdown 'gnus-close-agent 'gnus)
245 (defun gnus-close-agent ()
246 (setq gnus-category-predicate-cache nil
247 gnus-category-group-cache nil
248 gnus-agent-spam-hashtb nil)
249 (gnus-kill-buffer gnus-agent-overview-buffer))
252 ;;; Utility functions
255 (defun gnus-agent-read-file (file)
256 "Load FILE and do a `read' there."
259 (nnheader-insert-file-contents file)
260 (goto-char (point-min))
261 (read (current-buffer)))))
263 (defsubst gnus-agent-method ()
264 (concat (symbol-name (car gnus-command-method)) "/"
265 (if (equal (cadr gnus-command-method) "")
267 (cadr gnus-command-method))))
269 (defsubst gnus-agent-directory ()
270 "The name of the Gnus agent directory."
271 (nnheader-concat gnus-agent-directory
272 (nnheader-translate-file-chars (gnus-agent-method)) "/"))
274 (defun gnus-agent-lib-file (file)
275 "The full name of the Gnus agent library FILE."
276 (expand-file-name file
277 (file-name-as-directory
278 (expand-file-name "agent.lib" (gnus-agent-directory)))))
280 (defun gnus-agent-cat-set-property (category property value)
282 (setcdr (or (assq property category)
283 (let ((cell (cons property nil)))
284 (setcdr category (cons cell (cdr category)))
286 (let ((category category))
287 (while (cond ((eq property (caadr category))
288 (setcdr category (cddr category))
291 (setq category (cdr category)))))))
295 (defmacro gnus-agent-cat-defaccessor (name prop-name)
296 "Define accessor and setter methods for manipulating a list of the form
297 \(NAME (PROPERTY1 VALUE1) ... (PROPERTY_N VALUE_N)).
298 Given the call (gnus-agent-cat-defaccessor func PROPERTY1), the list may be
299 manipulated as follows:
300 (func LIST): Returns VALUE1
301 (setf (func LIST) NEW_VALUE1): Replaces VALUE1 with NEW_VALUE1."
302 `(progn (defmacro ,name (category)
303 (list (quote cdr) (list (quote assq)
304 (quote (quote ,prop-name)) category)))
306 (define-setf-method ,name (category)
307 (let* ((--category--temp-- (make-symbol "--category--"))
308 (--value--temp-- (make-symbol "--value--")))
309 (list (list --category--temp--) ; temporary-variables
310 (list category) ; value-forms
311 (list --value--temp--) ; store-variables
312 (let* ((category --category--temp--) ; store-form
313 (value --value--temp--))
314 (list (quote gnus-agent-cat-set-property)
316 (quote (quote ,prop-name))
318 (list (quote ,name) --category--temp--) ; access-form
322 (defmacro gnus-agent-cat-name (category)
325 (gnus-agent-cat-defaccessor
326 gnus-agent-cat-days-until-old agent-days-until-old)
327 (gnus-agent-cat-defaccessor
328 gnus-agent-cat-enable-expiration agent-enable-expiration)
329 (gnus-agent-cat-defaccessor
330 gnus-agent-cat-groups agent-groups)
331 (gnus-agent-cat-defaccessor
332 gnus-agent-cat-high-score agent-high-score)
333 (gnus-agent-cat-defaccessor
334 gnus-agent-cat-length-when-long agent-length-when-long)
335 (gnus-agent-cat-defaccessor
336 gnus-agent-cat-length-when-short agent-length-when-short)
337 (gnus-agent-cat-defaccessor
338 gnus-agent-cat-low-score agent-low-score)
339 (gnus-agent-cat-defaccessor
340 gnus-agent-cat-predicate agent-predicate)
341 (gnus-agent-cat-defaccessor
342 gnus-agent-cat-score-file agent-score-file)
343 (gnus-agent-cat-defaccessor
344 gnus-agent-cat-disable-undownloaded-faces agent-disable-undownloaded-faces)
347 (defsetf gnus-agent-cat-groups (category) (groups)
348 (list 'gnus-agent-set-cat-groups category groups)))
350 (defun gnus-agent-set-cat-groups (category groups)
351 (unless (eq groups 'ignore)
353 (old-g (gnus-agent-cat-groups category)))
354 (cond ((eq new-g old-g)
355 ;; gnus-agent-add-group is fiddling with the group
356 ;; list. Still, Im done.
359 ((eq new-g (cdr old-g))
360 ;; gnus-agent-add-group is fiddling with the group list
361 (setcdr (or (assq 'agent-groups category)
362 (let ((cell (cons 'agent-groups nil)))
363 (setcdr category (cons cell (cdr category)))
366 (let ((groups groups))
368 (let* ((group (pop groups))
369 (old-category (gnus-group-category group)))
370 (if (eq category old-category)
372 (setf (gnus-agent-cat-groups old-category)
373 (delete group (gnus-agent-cat-groups
375 ;; Purge cache as preceeding loop invalidated it.
376 (setq gnus-category-group-cache nil))
378 (setcdr (or (assq 'agent-groups category)
379 (let ((cell (cons 'agent-groups nil)))
380 (setcdr category (cons cell (cdr category)))
383 (defsubst gnus-agent-cat-make (name &optional default-agent-predicate)
384 (list name `(agent-predicate . ,(or default-agent-predicate 'false))))
386 ;;; Fetching setup functions.
388 (defun gnus-agent-start-fetch ()
389 "Initialize data structures for efficient fetching."
390 (gnus-agent-create-buffer))
392 (defun gnus-agent-stop-fetch ()
393 "Save all data structures and clean up."
394 (setq gnus-agent-spam-hashtb nil)
396 (set-buffer nntp-server-buffer)
399 (defmacro gnus-agent-with-fetch (&rest forms)
402 (let ((gnus-agent-fetching t))
403 (gnus-agent-start-fetch)
405 (gnus-agent-stop-fetch)))
407 (put 'gnus-agent-with-fetch 'lisp-indent-function 0)
408 (put 'gnus-agent-with-fetch 'edebug-form-spec '(body))
410 (defmacro gnus-agent-append-to-list (tail value)
411 `(setq ,tail (setcdr ,tail (cons ,value nil))))
413 (defmacro gnus-agent-message (level &rest args)
414 `(if (<= ,level gnus-verbose)
421 (defvar gnus-agent-mode-hook nil
422 "Hook run when installing agent mode.")
424 (defvar gnus-agent-mode nil)
425 (defvar gnus-agent-mode-status '(gnus-agent-mode " Plugged"))
427 (defun gnus-agent-mode ()
428 "Minor mode for providing a agent support in Gnus buffers."
429 (let* ((buffer (progn (string-match "^gnus-\\(.*\\)-mode$"
430 (symbol-name major-mode))
431 (match-string 1 (symbol-name major-mode))))
432 (mode (intern (format "gnus-agent-%s-mode" buffer))))
433 (set (make-local-variable 'gnus-agent-mode) t)
435 (set (make-local-variable mode) t)
437 (when (gnus-visual-p 'agent-menu 'menu)
438 (funcall (intern (format "gnus-agent-%s-make-menu-bar" buffer))))
439 (unless (assq 'gnus-agent-mode minor-mode-alist)
440 (push gnus-agent-mode-status minor-mode-alist))
441 (unless (assq mode minor-mode-map-alist)
442 (push (cons mode (symbol-value (intern (format "gnus-agent-%s-mode-map"
444 minor-mode-map-alist))
445 (when (eq major-mode 'gnus-group-mode)
446 (let ((init-plugged gnus-plugged)
447 (gnus-agent-go-online nil))
448 ;; g-a-t-p does nothing when gnus-plugged isn't changed.
449 ;; Therefore, make certain that the current value does not
450 ;; match the desired initial value.
451 (setq gnus-plugged :unknown)
452 (gnus-agent-toggle-plugged init-plugged)))
453 (gnus-run-hooks 'gnus-agent-mode-hook
454 (intern (format "gnus-agent-%s-mode-hook" buffer)))))
456 (defvar gnus-agent-group-mode-map (make-sparse-keymap))
457 (gnus-define-keys gnus-agent-group-mode-map
458 "Ju" gnus-agent-fetch-groups
459 "Jc" gnus-enter-category-buffer
460 "Jj" gnus-agent-toggle-plugged
461 "Js" gnus-agent-fetch-session
462 "JY" gnus-agent-synchronize-flags
463 "JS" gnus-group-send-queue
464 "Ja" gnus-agent-add-group
465 "Jr" gnus-agent-remove-group
466 "Jo" gnus-agent-toggle-group-plugged)
468 (defun gnus-agent-group-make-menu-bar ()
469 (unless (boundp 'gnus-agent-group-menu)
471 gnus-agent-group-menu gnus-agent-group-mode-map ""
473 ["Toggle plugged" gnus-agent-toggle-plugged t]
474 ["Toggle group plugged" gnus-agent-toggle-group-plugged t]
475 ["List categories" gnus-enter-category-buffer t]
476 ["Add (current) group to category" gnus-agent-add-group t]
477 ["Remove (current) group from category" gnus-agent-remove-group t]
478 ["Send queue" gnus-group-send-queue gnus-plugged]
480 ["All" gnus-agent-fetch-session gnus-plugged]
481 ["Group" gnus-agent-fetch-group gnus-plugged])
482 ["Synchronize flags" gnus-agent-synchronize-flags t]
485 (defvar gnus-agent-summary-mode-map (make-sparse-keymap))
486 (gnus-define-keys gnus-agent-summary-mode-map
487 "Jj" gnus-agent-toggle-plugged
488 "Ju" gnus-agent-summary-fetch-group
489 "JS" gnus-agent-fetch-group
490 "Js" gnus-agent-summary-fetch-series
491 "J#" gnus-agent-mark-article
492 "J\M-#" gnus-agent-unmark-article
493 "@" gnus-agent-toggle-mark
494 "Jc" gnus-agent-catchup)
496 (defun gnus-agent-summary-make-menu-bar ()
497 (unless (boundp 'gnus-agent-summary-menu)
499 gnus-agent-summary-menu gnus-agent-summary-mode-map ""
501 ["Toggle plugged" gnus-agent-toggle-plugged t]
502 ["Mark as downloadable" gnus-agent-mark-article t]
503 ["Unmark as downloadable" gnus-agent-unmark-article t]
504 ["Toggle mark" gnus-agent-toggle-mark t]
505 ["Fetch downloadable" gnus-agent-summary-fetch-group t]
506 ["Catchup undownloaded" gnus-agent-catchup t]))))
508 (defvar gnus-agent-server-mode-map (make-sparse-keymap))
509 (gnus-define-keys gnus-agent-server-mode-map
510 "Jj" gnus-agent-toggle-plugged
511 "Ja" gnus-agent-add-server
512 "Jr" gnus-agent-remove-server)
514 (defun gnus-agent-server-make-menu-bar ()
515 (unless (boundp 'gnus-agent-server-menu)
517 gnus-agent-server-menu gnus-agent-server-mode-map ""
519 ["Toggle plugged" gnus-agent-toggle-plugged t]
520 ["Add" gnus-agent-add-server t]
521 ["Remove" gnus-agent-remove-server t]))))
523 (defun gnus-agent-make-mode-line-string (string mouse-button mouse-func)
524 (if (and (fboundp 'propertize)
525 (fboundp 'make-mode-line-mouse-map))
526 (propertize string 'local-map
527 (make-mode-line-mouse-map mouse-button mouse-func))
530 (defun gnus-agent-toggle-plugged (set-to)
531 "Toggle whether Gnus is unplugged or not."
532 (interactive (list (not gnus-plugged)))
533 (cond ((eq set-to gnus-plugged)
536 (setq gnus-plugged set-to)
537 (gnus-run-hooks 'gnus-agent-plugged-hook)
538 (setcar (cdr gnus-agent-mode-status)
539 (gnus-agent-make-mode-line-string " Plugged"
541 'gnus-agent-toggle-plugged))
542 (gnus-agent-go-online gnus-agent-go-online)
543 (gnus-agent-possibly-synchronize-flags))
545 (gnus-agent-close-connections)
546 (setq gnus-plugged set-to)
547 (gnus-run-hooks 'gnus-agent-unplugged-hook)
548 (setcar (cdr gnus-agent-mode-status)
549 (gnus-agent-make-mode-line-string " Unplugged"
551 'gnus-agent-toggle-plugged))))
552 (set-buffer-modified-p t))
554 (defmacro gnus-agent-while-plugged (&rest body)
555 `(let ((original-gnus-plugged gnus-plugged))
557 (progn (gnus-agent-toggle-plugged t)
559 (gnus-agent-toggle-plugged original-gnus-plugged))))
561 (put 'gnus-agent-while-plugged 'lisp-indent-function 0)
562 (put 'gnus-agent-while-plugged 'edebug-form-spec '(body))
564 (defun gnus-agent-close-connections ()
565 "Close all methods covered by the Gnus agent."
566 (let ((methods (gnus-agent-covered-methods)))
568 (gnus-close-server (pop methods)))))
571 (defun gnus-unplugged ()
572 "Start Gnus unplugged."
574 (setq gnus-plugged nil)
578 (defun gnus-plugged ()
579 "Start Gnus plugged."
581 (setq gnus-plugged t)
585 (defun gnus-slave-unplugged (&optional arg)
586 "Read news as a slave unplugged."
588 (setq gnus-plugged nil)
589 (gnus arg nil 'slave))
592 (defun gnus-agentize ()
593 "Allow Gnus to be an offline newsreader.
595 The gnus-agentize function is now called internally by gnus when
596 gnus-agent is set. If you wish to avoid calling gnus-agentize,
597 customize gnus-agent to nil.
599 This will modify the `gnus-setup-news-hook', and
600 `message-send-mail-real-function' variables, and install the Gnus agent
601 minor mode in all Gnus buffers."
604 (add-hook 'gnus-setup-news-hook 'gnus-agent-queue-setup)
605 (unless gnus-agent-send-mail-function
606 (setq gnus-agent-send-mail-function
607 (or message-send-mail-real-function
608 message-send-mail-function)
609 message-send-mail-real-function 'gnus-agent-send-mail))
611 ;; If the servers file doesn't exist, auto-agentize some servers and
612 ;; save the servers file so this auto-agentizing isn't invoked
614 (unless (file-exists-p (nnheader-concat gnus-agent-directory "lib/servers"))
615 (gnus-message 3 "First time agent user, agentizing remote groups...")
617 (lambda (server-or-method)
618 (let ((method (gnus-server-to-method server-or-method)))
619 (when (memq (car method)
620 gnus-agent-auto-agentize-methods)
621 (push (gnus-method-to-server method)
622 gnus-agent-covered-methods)
623 (setq gnus-agent-method-p-cache nil))))
624 (cons gnus-select-method gnus-secondary-select-methods))
625 (gnus-agent-write-servers)))
627 (defun gnus-agent-queue-setup (&optional group-name)
628 "Make sure the queue group exists.
629 Optional arg GROUP-NAME allows to specify another group."
630 (unless (gnus-gethash (format "nndraft:%s" (or group-name "queue"))
632 (gnus-request-create-group (or group-name "queue") '(nndraft ""))
633 (let ((gnus-level-default-subscribed 1))
634 (gnus-subscribe-group (format "nndraft:%s" (or group-name "queue"))
636 (gnus-group-set-parameter
637 (format "nndraft:%s" (or group-name "queue"))
638 'gnus-dummy '((gnus-draft-mode)))))
640 (defun gnus-agent-send-mail ()
642 (funcall gnus-agent-send-mail-function)
643 (goto-char (point-min))
645 (concat "^" (regexp-quote mail-header-separator) "\n"))
647 (gnus-agent-insert-meta-information 'mail)
648 (gnus-request-accept-article "nndraft:queue" nil t t)))
650 (defun gnus-agent-insert-meta-information (type &optional method)
651 "Insert meta-information into the message that says how it's to be posted.
652 TYPE can be either `mail' or `news'. If the latter, then METHOD can
655 (message-remove-header gnus-agent-meta-information-header)
656 (goto-char (point-min))
657 (insert gnus-agent-meta-information-header ": "
658 (symbol-name type) " " (format "%S" method)
661 (while (search-backward "\n" nil t)
662 (replace-match "\\n" t t))))
664 (defun gnus-agent-restore-gcc ()
665 "Restore GCC field from saved header."
667 (goto-char (point-min))
668 (while (re-search-forward (concat gnus-agent-gcc-header ":") nil t)
669 (replace-match "Gcc:" 'fixedcase))))
671 (defun gnus-agent-any-covered-gcc ()
673 (message-narrow-to-headers)
674 (let* ((gcc (mail-fetch-field "gcc" nil t))
676 (mapcar 'gnus-inews-group-method
677 (message-unquote-tokens
678 (message-tokenize-header
681 (while (and (not covered) methods)
682 (setq covered (gnus-agent-method-p (car methods))
683 methods (cdr methods)))
687 (defun gnus-agent-possibly-save-gcc ()
688 "Save GCC if Gnus is unplugged."
689 (when (and (not gnus-plugged) (gnus-agent-any-covered-gcc))
691 (goto-char (point-min))
692 (let ((case-fold-search t))
693 (while (re-search-forward "^gcc:" nil t)
694 (replace-match (concat gnus-agent-gcc-header ":") 'fixedcase))))))
696 (defun gnus-agent-possibly-do-gcc ()
697 "Do GCC if Gnus is plugged."
698 (when (or gnus-plugged (not (gnus-agent-any-covered-gcc)))
699 (gnus-inews-do-gcc)))
702 ;;; Group mode commands
705 (defun gnus-agent-fetch-groups (n)
706 "Put all new articles in the current groups into the Agent."
709 (error "Groups can't be fetched when Gnus is unplugged"))
710 (gnus-group-iterate n 'gnus-agent-fetch-group))
712 (defun gnus-agent-fetch-group (&optional group)
713 "Put all new articles in GROUP into the Agent."
714 (interactive (list (gnus-group-group-name)))
715 (setq group (or group gnus-newsgroup-name))
717 (error "No group on the current line"))
719 (gnus-agent-while-plugged
720 (let ((gnus-command-method (gnus-find-method-for-group group)))
721 (gnus-agent-with-fetch
722 (gnus-agent-fetch-group-1 group gnus-command-method)
723 (gnus-message 5 "Fetching %s...done" group)))))
725 (defun gnus-agent-add-group (category arg)
726 "Add the current group to an agent category."
732 (mapcar (lambda (cat) (list (symbol-name (car cat))))
736 (let ((cat (assq category gnus-category-alist))
738 (gnus-group-iterate arg
740 (when (gnus-agent-cat-groups (setq c (gnus-group-category group)))
741 (setf (gnus-agent-cat-groups c)
742 (delete group (gnus-agent-cat-groups c))))
743 (push group groups)))
744 (setf (gnus-agent-cat-groups cat)
745 (nconc (gnus-agent-cat-groups cat) groups))
746 (gnus-category-write)))
748 (defun gnus-agent-remove-group (arg)
749 "Remove the current group from its agent category, if any."
752 (gnus-group-iterate arg
754 (when (gnus-agent-cat-groups (setq c (gnus-group-category group)))
755 (setf (gnus-agent-cat-groups c)
756 (delete group (gnus-agent-cat-groups c))))))
757 (gnus-category-write)))
759 (defun gnus-agent-synchronize-flags ()
760 "Synchronize unplugged flags with servers."
763 (dolist (gnus-command-method (gnus-agent-covered-methods))
764 (when (file-exists-p (gnus-agent-lib-file "flags"))
765 (gnus-agent-synchronize-flags-server gnus-command-method)))))
767 (defun gnus-agent-possibly-synchronize-flags ()
768 "Synchronize flags according to `gnus-agent-synchronize-flags'."
771 (dolist (gnus-command-method (gnus-agent-covered-methods))
772 (when (file-exists-p (gnus-agent-lib-file "flags"))
773 (gnus-agent-possibly-synchronize-flags-server gnus-command-method)))))
775 (defun gnus-agent-synchronize-flags-server (method)
776 "Synchronize flags set when unplugged for server."
777 (let ((gnus-command-method method))
778 (when (file-exists-p (gnus-agent-lib-file "flags"))
779 (set-buffer (get-buffer-create " *Gnus Agent flag synchronize*"))
781 (nnheader-insert-file-contents (gnus-agent-lib-file "flags"))
782 (if (null (gnus-check-server gnus-command-method))
783 (gnus-message 1 "Couldn't open server %s" (nth 1 gnus-command-method))
785 (if (null (eval (read (current-buffer))))
787 (write-file (gnus-agent-lib-file "flags"))
788 (error "Couldn't set flags from file %s"
789 (gnus-agent-lib-file "flags"))))
790 (delete-file (gnus-agent-lib-file "flags")))
793 (defun gnus-agent-possibly-synchronize-flags-server (method)
794 "Synchronize flags for server according to `gnus-agent-synchronize-flags'."
795 (when (or (and gnus-agent-synchronize-flags
796 (not (eq gnus-agent-synchronize-flags 'ask)))
797 (and (eq gnus-agent-synchronize-flags 'ask)
798 (gnus-y-or-n-p (format "Synchronize flags on server `%s'? "
800 (gnus-agent-synchronize-flags-server method)))
803 ;;; Server mode commands
806 (defun gnus-agent-add-server ()
807 "Enroll SERVER in the agent program."
809 (let* ((server (gnus-server-server-name))
810 (named-server (gnus-server-named-server))
812 (gnus-server-get-method nil server))))
814 (error "No server on the current line"))
816 (when (gnus-agent-method-p method)
817 (error "Server already in the agent program"))
819 (push named-server gnus-agent-covered-methods)
821 (setq gnus-agent-method-p-cache nil)
822 (gnus-server-update-server server)
823 (gnus-agent-write-servers)
824 (gnus-message 1 "Entered %s into the Agent" server)))
826 (defun gnus-agent-remove-server ()
827 "Remove SERVER from the agent program."
829 (let* ((server (gnus-server-server-name))
830 (named-server (gnus-server-named-server)))
832 (error "No server on the current line"))
834 (unless (member named-server gnus-agent-covered-methods)
835 (error "Server not in the agent program"))
837 (setq gnus-agent-covered-methods
838 (delete named-server gnus-agent-covered-methods)
839 gnus-agent-method-p-cache nil)
841 (gnus-server-update-server server)
842 (gnus-agent-write-servers)
843 (gnus-message 1 "Removed %s from the agent" server)))
845 (defun gnus-agent-read-servers ()
846 "Read the alist of covered servers."
847 (setq gnus-agent-covered-methods
848 (gnus-agent-read-file
849 (nnheader-concat gnus-agent-directory "lib/servers"))
850 gnus-agent-method-p-cache nil)
852 ;; I am called so early in start-up that I can not validate server
853 ;; names. When that is the case, I skip the validation. That is
854 ;; alright as the gnus startup code calls the validate methods
856 (if gnus-server-alist
857 (gnus-agent-read-servers-validate)))
859 (defun gnus-agent-read-servers-validate ()
860 (mapcar (lambda (server-or-method)
861 (let* ((server (if (stringp server-or-method)
863 (gnus-method-to-server server-or-method)))
864 (method (gnus-server-to-method server)))
866 (unless (member server gnus-agent-covered-methods)
867 (push server gnus-agent-covered-methods)
868 (setq gnus-agent-method-p-cache nil))
869 (gnus-message 1 "Ignoring disappeared server `%s'" server))))
870 (prog1 gnus-agent-covered-methods
871 (setq gnus-agent-covered-methods nil))))
873 (defun gnus-agent-read-servers-validate-native (native-method)
874 (setq gnus-agent-covered-methods
875 (mapcar (lambda (method)
877 (equal method native-method))
879 method)) gnus-agent-covered-methods)))
881 (defun gnus-agent-write-servers ()
882 "Write the alist of covered servers."
883 (gnus-make-directory (nnheader-concat gnus-agent-directory "lib"))
884 (let ((coding-system-for-write nnheader-file-coding-system)
885 (file-name-coding-system nnmail-pathname-coding-system))
886 (with-temp-file (nnheader-concat gnus-agent-directory "lib/servers")
887 (prin1 gnus-agent-covered-methods
894 (defun gnus-agent-mark-article (n &optional unmark)
895 "Mark the next N articles as downloadable.
896 If N is negative, mark backward instead. If UNMARK is non-nil, remove
897 the mark instead. The difference between N and the actual number of
898 articles marked is returned."
900 (let ((backward (< n 0))
905 (gnus-summary-set-agent-mark
906 (gnus-summary-article-number) unmark)
907 (zerop (gnus-summary-next-subject (if backward -1 1) nil t))))
910 (gnus-message 7 "No more articles"))
911 (gnus-summary-recenter)
912 (gnus-summary-position-point)
915 (defun gnus-agent-unmark-article (n)
916 "Remove the downloadable mark from the next N articles.
917 If N is negative, unmark backward instead. The difference between N and
918 the actual number of articles unmarked is returned."
920 (gnus-agent-mark-article n t))
922 (defun gnus-agent-toggle-mark (n)
923 "Toggle the downloadable mark from the next N articles.
924 If N is negative, toggle backward instead. The difference between N and
925 the actual number of articles toggled is returned."
927 (gnus-agent-mark-article n 'toggle))
929 (defun gnus-summary-set-agent-mark (article &optional unmark)
930 "Mark ARTICLE as downloadable. If UNMARK is nil, article is marked.
931 When UNMARK is t, the article is unmarked. For any other value, the
932 article's mark is toggled."
933 (let ((unmark (cond ((eq nil unmark)
938 (memq article gnus-newsgroup-downloadable)))))
939 (when (gnus-summary-goto-subject article nil t)
940 (gnus-summary-update-mark
943 (setq gnus-newsgroup-downloadable
944 (delq article gnus-newsgroup-downloadable))
945 (gnus-article-mark article))
947 (setq gnus-newsgroup-downloadable
948 (gnus-add-to-sorted-list gnus-newsgroup-downloadable article))
949 gnus-downloadable-mark)
953 (defun gnus-agent-get-undownloaded-list ()
954 "Construct list of articles that have not been downloaded."
955 (let ((gnus-command-method (gnus-find-method-for-group gnus-newsgroup-name)))
956 (when (set (make-local-variable 'gnus-newsgroup-agentized)
957 (gnus-agent-method-p gnus-command-method))
958 (let* ((alist (gnus-agent-load-alist gnus-newsgroup-name))
959 (headers (sort (mapcar (lambda (h)
960 (mail-header-number h))
961 gnus-newsgroup-headers) '<))
962 (cached (and gnus-use-cache gnus-newsgroup-cached))
963 (undownloaded (list nil))
964 (tail-undownloaded undownloaded)
965 (unfetched (list nil))
966 (tail-unfetched unfetched))
967 (while (and alist headers)
968 (let ((a (caar alist))
971 ;; Ignore IDs in the alist that are not being
972 ;; displayed in the summary.
973 (setq alist (cdr alist)))
975 ;; Headers that are not in the alist should be
976 ;; fictious (see nnagent-retrieve-headers); they
977 ;; imply that this article isn't in the agent.
978 (gnus-agent-append-to-list tail-undownloaded h)
979 (gnus-agent-append-to-list tail-unfetched h)
980 (setq headers (cdr headers)))
982 (setq alist (cdr alist))
983 (setq headers (cdr headers))
984 nil ; ignore already downloaded
987 (setq alist (cdr alist))
988 (setq headers (cdr headers))
990 ;; This article isn't in the agent. Check to see
991 ;; if it is in the cache. If it is, it's been
993 (while (and cached (< (car cached) a))
994 (setq cached (cdr cached)))
995 (unless (equal a (car cached))
996 (gnus-agent-append-to-list tail-undownloaded a))))))
999 (let ((num (pop headers)))
1000 (gnus-agent-append-to-list tail-undownloaded num)
1001 (gnus-agent-append-to-list tail-unfetched num)))
1003 (setq gnus-newsgroup-undownloaded (cdr undownloaded)
1004 gnus-newsgroup-unfetched (cdr unfetched))))))
1006 (defun gnus-agent-catchup ()
1007 "Mark as read all unhandled articles.
1008 An article is unhandled if it is neither cached, nor downloaded, nor
1012 (let ((articles gnus-newsgroup-undownloaded))
1013 (when (or gnus-newsgroup-downloadable
1014 gnus-newsgroup-cached)
1015 (setq articles (gnus-sorted-ndifference
1016 (gnus-sorted-ndifference
1017 (gnus-copy-sequence articles)
1018 gnus-newsgroup-downloadable)
1019 gnus-newsgroup-cached)))
1022 (gnus-summary-mark-article
1023 (pop articles) gnus-catchup-mark)))
1024 (gnus-summary-position-point)))
1026 (defun gnus-agent-summary-fetch-series ()
1028 (when gnus-newsgroup-processable
1029 (setq gnus-newsgroup-downloadable
1030 (let* ((dl gnus-newsgroup-downloadable)
1031 (gnus-newsgroup-downloadable
1032 (sort (gnus-copy-sequence gnus-newsgroup-processable) '<))
1033 (fetched-articles (gnus-agent-summary-fetch-group)))
1034 ;; The preceeding call to (gnus-agent-summary-fetch-group)
1035 ;; updated gnus-newsgroup-downloadable to remove each
1036 ;; article successfully fetched.
1038 ;; For each article that I processed, remove its
1039 ;; processable mark IF the article is no longer
1040 ;; downloadable (i.e. it's already downloaded)
1041 (dolist (article gnus-newsgroup-processable)
1042 (unless (memq article gnus-newsgroup-downloadable)
1043 (gnus-summary-remove-process-mark article)))
1044 (gnus-sorted-ndifference dl fetched-articles)))))
1046 (defun gnus-agent-summary-fetch-group (&optional all)
1047 "Fetch the downloadable articles in the group.
1048 Optional arg ALL, if non-nil, means to fetch all articles."
1051 (if all gnus-newsgroup-articles
1052 gnus-newsgroup-downloadable))
1053 (gnus-command-method (gnus-find-method-for-group gnus-newsgroup-name))
1055 (gnus-agent-while-plugged
1057 (error "No articles to download"))
1058 (gnus-agent-with-fetch
1059 (setq gnus-newsgroup-undownloaded
1060 (gnus-sorted-ndifference
1061 gnus-newsgroup-undownloaded
1062 (setq fetched-articles
1063 (gnus-agent-fetch-articles
1064 gnus-newsgroup-name articles)))))
1066 (dolist (article articles)
1067 (let ((was-marked-downloadable
1068 (memq article gnus-newsgroup-downloadable)))
1069 (cond (gnus-agent-mark-unread-after-downloaded
1070 (setq gnus-newsgroup-downloadable
1071 (delq article gnus-newsgroup-downloadable))
1073 ;; The downloadable mark is implemented as a
1074 ;; type of read mark. Therefore, marking the
1075 ;; article as unread is sufficient to clear
1076 ;; its downloadable flag.
1077 (gnus-summary-mark-article article gnus-unread-mark))
1078 (was-marked-downloadable
1079 (gnus-summary-set-agent-mark article t)))
1080 (when (gnus-summary-goto-subject article nil t)
1081 (gnus-summary-update-download-mark article))))))
1084 (defun gnus-agent-fetch-selected-article ()
1085 "Fetch the current article as it is selected.
1086 This can be added to `gnus-select-article-hook' or
1087 `gnus-mark-article-hook'."
1088 (let ((gnus-command-method gnus-current-select-method))
1089 (when (and gnus-plugged (gnus-agent-method-p gnus-command-method))
1090 (when (gnus-agent-fetch-articles
1092 (list gnus-current-article))
1093 (setq gnus-newsgroup-undownloaded
1094 (delq gnus-current-article gnus-newsgroup-undownloaded))
1095 (gnus-summary-update-download-mark gnus-current-article)))))
1098 ;;; Internal functions
1102 ;;; The agent's active range is defined as follows:
1103 ;;; If the agent has no record of the group, use the actual active
1105 ;;; If the agent has a record, set the agent's active range to
1106 ;;; include the max limit of the actual active range.
1107 ;;; When expiring, update the min limit to match the smallest of the
1108 ;;; min article not expired or the min actual active range.
1110 (defun gnus-agent-save-active (method)
1111 (gnus-agent-save-active-1 method 'gnus-active-to-gnus-format))
1113 (defun gnus-agent-save-active-1 (method function)
1114 (when (gnus-agent-method-p method)
1115 (let* ((gnus-command-method method)
1116 (new (gnus-make-hashtable (count-lines (point-min) (point-max))))
1117 (file (gnus-agent-lib-file "active")))
1118 (funcall function nil new)
1119 (gnus-agent-write-active file new)
1121 (nnheader-insert-file-contents file))))
1123 (defun gnus-agent-write-active (file new &optional literal-replacement)
1125 (when (and (not literal-replacement)
1126 (file-exists-p file))
1127 (setq old (gnus-make-hashtable (count-lines (point-min) (point-max))))
1129 (nnheader-insert-file-contents file)
1130 (gnus-active-to-gnus-format nil old))
1131 ;; Iterate over the current active groups, the current active
1132 ;; range may expand, but NOT CONTRACT, the agent's active range.
1135 (let ((new-active (and nsym (boundp nsym) (symbol-value nsym))))
1137 (let* ((osym (intern (symbol-name nsym) old))
1138 (old-active (and (boundp osym) (symbol-value osym))))
1140 (let ((new-min (car new-active))
1141 (old-min (car old-active))
1142 (new-max (cdr new-active))
1143 (old-max (cdr old-active)))
1144 (if (and (integerp new-min)
1145 (< new-min old-min))
1146 (setcar old-active new-min))
1147 (if (and (integerp new-max)
1148 (> new-max old-max))
1149 (setcdr old-active new-max)))
1150 (set osym new-active))))))
1152 (gnus-make-directory (file-name-directory file))
1153 (let ((nnmail-active-file-coding-system gnus-agent-file-coding-system))
1154 ;; The hashtable contains real names of groups. However, do NOT
1155 ;; add the foreign server prefix as gnus-active-to-gnus-format
1156 ;; will add it while reading the file.
1157 (gnus-write-active-file file old nil))))
1159 (defun gnus-agent-possibly-alter-active (group active)
1160 "Possibly expand a group's active range to include articles
1161 downloaded into the agent."
1163 ;; I can't use the agent's active file here as there is no practical
1164 ;; mechanism to update the active ranges in that file as the oldest
1165 ;; articles are removed from the agent.
1166 (let* ((gnus-command-method (or gnus-command-method
1167 (gnus-find-method-for-group group)))
1168 (alist (gnus-agent-load-alist group)))
1170 (let ((new-min (or (caar gnus-agent-article-alist)
1172 (new-max (or (caar (last gnus-agent-article-alist))
1175 (when (< new-min (car active))
1176 (setcar active new-min))
1177 (when (> new-max (cdr active))
1178 (setcdr active new-max)))))
1180 (defun gnus-agent-save-groups (method)
1181 (gnus-agent-save-active-1 method 'gnus-groups-to-gnus-format))
1183 (defun gnus-agent-save-group-info (method group active)
1184 (when (gnus-agent-method-p method)
1185 (let* ((gnus-command-method method)
1186 (coding-system-for-write nnheader-file-coding-system)
1187 (file-name-coding-system nnmail-pathname-coding-system)
1188 (file (gnus-agent-lib-file "active"))
1189 oactive-min oactive-max)
1190 (gnus-make-directory (file-name-directory file))
1191 (with-temp-file file
1192 ;; Emacs got problem to match non-ASCII group in multibyte buffer.
1193 (mm-disable-multibyte)
1194 (when (file-exists-p file)
1195 (nnheader-insert-file-contents file)
1197 (goto-char (point-min))
1198 (when (re-search-forward
1199 (concat "^" (regexp-quote group) " ") nil t)
1201 (setq oactive-max (read (current-buffer)) ;; max
1202 oactive-min (read (current-buffer)))) ;; min
1203 (gnus-delete-line)))
1204 (insert (format "%S %d %d y\n" (intern group)
1205 (max (or oactive-max (cdr active)) (cdr active))
1206 (min (or oactive-min (car active)) (car active))))
1207 (goto-char (point-max))
1208 (while (search-backward "\\." nil t)
1209 (delete-char 1))))))
1211 (defun gnus-agent-group-path (group)
1212 "Translate GROUP into a file name."
1214 ;; NOTE: This is what nnmail-group-pathname does as of Apr 2003.
1215 ;; The two methods must be kept synchronized, which is why
1216 ;; gnus-agent-group-pathname was added.
1219 (nnheader-translate-file-chars
1220 (nnheader-replace-duplicate-chars-in-string
1221 (nnheader-replace-chars-in-string
1222 (gnus-group-real-name group)
1225 (if (or nnmail-use-long-file-names
1226 (file-directory-p (expand-file-name group (gnus-agent-directory))))
1228 (mm-encode-coding-string
1229 (nnheader-replace-chars-in-string group ?. ?/)
1230 nnmail-pathname-coding-system)))
1232 (defun gnus-agent-group-pathname (group)
1233 "Translate GROUP into a file name."
1234 ;; nnagent uses nnmail-group-pathname to read articles while
1235 ;; unplugged. The agent must, therefore, use the same directory
1237 (let ((gnus-command-method (or gnus-command-method
1238 (gnus-find-method-for-group group))))
1239 (nnmail-group-pathname (gnus-group-real-name group) (gnus-agent-directory))))
1241 (defun gnus-agent-get-function (method)
1242 (if (gnus-online method)
1247 (defun gnus-agent-covered-methods ()
1248 "Return the subset of methods that are covered by the agent."
1249 (delq nil (mapcar #'gnus-server-to-method gnus-agent-covered-methods)))
1251 ;;; History functions
1253 (defun gnus-agent-history-buffer ()
1254 (cdr (assoc (gnus-agent-method) gnus-agent-history-buffers)))
1256 (defun gnus-agent-open-history ()
1258 (push (cons (gnus-agent-method)
1259 (set-buffer (gnus-get-buffer-create
1260 (format " *Gnus agent %s history*"
1261 (gnus-agent-method)))))
1262 gnus-agent-history-buffers)
1263 (mm-disable-multibyte) ;; everything is binary
1266 (let ((file (gnus-agent-lib-file "history")))
1267 (when (file-exists-p file)
1268 (nnheader-insert-file-contents file))
1269 (set (make-local-variable 'gnus-agent-file-name) file))))
1271 (defun gnus-agent-close-history ()
1272 (when (gnus-buffer-live-p gnus-agent-current-history)
1273 (kill-buffer gnus-agent-current-history)
1274 (setq gnus-agent-history-buffers
1275 (delq (assoc (gnus-agent-method) gnus-agent-history-buffers)
1276 gnus-agent-history-buffers))))
1282 (defun gnus-agent-fetch-articles (group articles)
1283 "Fetch ARTICLES from GROUP and put them into the Agent."
1285 (gnus-agent-load-alist group)
1286 (let* ((alist gnus-agent-article-alist)
1287 (headers (if (< (length articles) 2) nil gnus-newsgroup-headers))
1288 (selected-sets (list nil))
1289 (current-set-size 0)
1292 ;; Check each article
1293 (while (setq article (pop articles))
1294 ;; Skip alist entries preceeding this article
1295 (while (> article (or (caar alist) (1+ article)))
1296 (setq alist (cdr alist)))
1298 ;; Prune off articles that we have already fetched.
1299 (unless (and (eq article (caar alist))
1301 ;; Skip headers preceeding this article
1304 (let* ((header (car headers)))
1306 (mail-header-number header)
1308 (setq headers (cdr headers)))
1310 ;; Add this article to the current set
1311 (setcar selected-sets (cons article (car selected-sets)))
1313 ;; Update the set size, when the set is too large start a
1314 ;; new one. I do this after adding the article as I want at
1315 ;; least one article in each set.
1316 (when (< gnus-agent-max-fetch-size
1317 (setq current-set-size
1319 (if (= header-number article)
1320 (let ((char-size (mail-header-chars
1322 (if (<= char-size 0)
1323 ;; The char size was missing/invalid,
1324 ;; assume a worst-case situation of
1325 ;; 65 char/line. If the line count
1326 ;; is missing, arbitrarily assume a
1327 ;; size of 1000 characters.
1328 (max (* 65 (mail-header-lines
1333 (setcar selected-sets (nreverse (car selected-sets)))
1334 (setq selected-sets (cons nil selected-sets)
1335 current-set-size 0))))
1337 (when (or (cdr selected-sets) (car selected-sets))
1338 (let* ((fetched-articles (list nil))
1339 (tail-fetched-articles fetched-articles)
1340 (dir (gnus-agent-group-pathname group))
1341 (date (time-to-days (current-time)))
1342 (case-fold-search t)
1345 (setcar selected-sets (nreverse (car selected-sets)))
1346 (setq selected-sets (nreverse selected-sets))
1348 (gnus-make-directory dir)
1349 (gnus-message 7 "Fetching articles for %s..." group)
1352 (while (setq articles (pop selected-sets))
1353 ;; Fetch the articles from the backend.
1354 (if (gnus-check-backend-function 'retrieve-articles group)
1355 (setq pos (gnus-retrieve-articles articles group))
1358 (while (setq article (pop articles))
1359 (gnus-message 10 "Fetching article %s for %s..."
1362 (gnus-backlog-request-article group article
1364 (gnus-request-article article group))
1365 (goto-char (point-max))
1366 (push (cons article (point)) pos)
1367 (insert-buffer-substring nntp-server-buffer)))
1369 nntp-server-buffer (point-min) (point-max))
1370 (setq pos (nreverse pos)))))
1371 ;; Then save these articles into the Agent.
1373 (set-buffer nntp-server-buffer)
1375 (narrow-to-region (cdar pos) (or (cdadr pos) (point-max)))
1376 (goto-char (point-min))
1377 (unless (eobp) ;; Don't save empty articles.
1378 (when (search-forward "\n\n" nil t)
1379 (when (search-backward "\nXrefs: " nil t)
1380 ;; Handle cross posting.
1381 (goto-char (match-end 0)) ; move to end of header name
1382 (skip-chars-forward "^ ") ; skip server name
1383 (skip-chars-forward " ")
1385 (while (looking-at "\\([^: \n]+\\):\\([0-9]+\\) *")
1386 (push (cons (buffer-substring (match-beginning 1)
1389 (buffer-substring (match-beginning 2)
1392 (goto-char (match-end 0)))
1393 (gnus-agent-crosspost crosses (caar pos) date)))
1394 (goto-char (point-min))
1395 (if (not (re-search-forward
1396 "^Message-ID: *<\\([^>\n]+\\)>" nil t))
1397 (setq id "No-Message-ID-in-article")
1398 (setq id (buffer-substring
1399 (match-beginning 1) (match-end 1))))
1400 (let ((coding-system-for-write
1401 gnus-agent-file-coding-system))
1402 (write-region (point-min) (point-max)
1403 (concat dir (number-to-string (caar pos)))
1406 (gnus-agent-append-to-list
1407 tail-fetched-articles (caar pos)))
1409 (setq pos (cdr pos)))))
1411 (gnus-agent-save-alist group (cdr fetched-articles) date)
1412 (gnus-message 7 ""))
1413 (cdr fetched-articles))))))
1415 (defun gnus-agent-crosspost (crosses article &optional date)
1416 (setq date (or date t))
1418 (let (gnus-agent-article-alist group alist beg end)
1420 (set-buffer gnus-agent-overview-buffer)
1421 (when (nnheader-find-nov-line article)
1424 (setq end (progn (forward-line 1) (point)))))
1426 (setq group (caar crosses))
1427 (unless (setq alist (assoc group gnus-agent-group-alist))
1428 (push (setq alist (list group (gnus-agent-load-alist (caar crosses))))
1429 gnus-agent-group-alist))
1430 (setcdr alist (cons (cons (cdar crosses) date) (cdr alist)))
1432 (set-buffer (gnus-get-buffer-create (format " *Gnus agent overview %s*"
1434 (when (= (point-max) (point-min))
1435 (push (cons group (current-buffer)) gnus-agent-buffer-alist)
1437 (nnheader-insert-file-contents
1438 (gnus-agent-article-name ".overview" group))))
1439 (nnheader-find-nov-line (string-to-number (cdar crosses)))
1440 (insert (string-to-number (cdar crosses)))
1441 (insert-buffer-substring gnus-agent-overview-buffer beg end)
1442 (gnus-agent-check-overview-buffer))
1443 (setq crosses (cdr crosses)))))
1445 (defun gnus-agent-backup-overview-buffer ()
1446 (when gnus-newsgroup-name
1447 (let ((root (gnus-agent-article-name ".overview" gnus-newsgroup-name))
1450 (while (file-exists-p
1451 (setq name (concat root "~"
1452 (int-to-string (setq cnt (1+ cnt))) "~"))))
1453 (write-region (point-min) (point-max) name nil 'no-msg)
1454 (gnus-message 1 "Created backup copy of overview in %s." name)))
1457 (defun gnus-agent-check-overview-buffer (&optional buffer)
1458 "Check the overview file given for sanity.
1459 In particular, checks that the file is sorted by article number
1460 and that there are no duplicates."
1465 (set-buffer buffer))
1468 (goto-char (point-min))
1470 (while (< (point) (point-max))
1472 (cur (condition-case nil
1473 (read (current-buffer))
1476 ((or (not (integerp cur))
1477 (not (eq (char-after) ?\t)))
1479 (setq backed-up (gnus-agent-backup-overview-buffer)))
1481 "Overview buffer contains garbage '%s'."
1483 p (gnus-point-at-eol))))
1486 (setq backed-up (gnus-agent-backup-overview-buffer)))
1488 "Duplicate overview line for %d" cur)
1489 (delete-region (point) (progn (forward-line 1) (point))))
1492 (setq backed-up (gnus-agent-backup-overview-buffer)))
1493 (gnus-message 1 "Overview buffer not sorted!")
1494 (sort-numeric-fields 1 (point-min) (point-max))
1495 (goto-char (point-min))
1498 (setq prev-num cur)))
1499 (forward-line 1)))))))
1501 (defun gnus-agent-flush-cache ()
1503 (while gnus-agent-buffer-alist
1504 (set-buffer (cdar gnus-agent-buffer-alist))
1505 (let ((coding-system-for-write
1506 gnus-agent-file-coding-system))
1507 (write-region (point-min) (point-max)
1508 (gnus-agent-article-name ".overview"
1509 (caar gnus-agent-buffer-alist))
1511 (setq gnus-agent-buffer-alist (cdr gnus-agent-buffer-alist)))
1512 (while gnus-agent-group-alist
1513 (with-temp-file (gnus-agent-article-name
1514 ".agentview" (caar gnus-agent-group-alist))
1515 (princ (cdar gnus-agent-group-alist))
1517 (princ 1 (current-buffer))
1519 (setq gnus-agent-group-alist (cdr gnus-agent-group-alist)))))
1521 (defun gnus-agent-find-parameter (group symbol)
1522 "Search for GROUPs SYMBOL in the group's parameters, the group's
1523 topic parameters, the group's category, or the customizable
1524 variables. Returns the first non-nil value found."
1525 (or (gnus-group-find-parameter group symbol t)
1526 (gnus-group-parameter-value (cdr (gnus-group-category group)) symbol t)
1530 '((agent-short-article . gnus-agent-short-article)
1531 (agent-long-article . gnus-agent-long-article)
1532 (agent-low-score . gnus-agent-low-score)
1533 (agent-high-score . gnus-agent-high-score)
1534 (agent-days-until-old . gnus-agent-expire-days)
1535 (agent-enable-expiration
1536 . gnus-agent-enable-expiration)
1537 (agent-predicate . gnus-agent-predicate)))))))
1539 (defun gnus-agent-fetch-headers (group &optional force)
1540 "Fetch interesting headers into the agent. The group's overview
1541 file will be updated to include the headers while a list of available
1542 article numbers will be returned."
1543 (let* ((fetch-all (and gnus-agent-consider-all-articles
1544 ;; Do not fetch all headers if the predicate
1545 ;; implies that we only consider unread articles.
1546 (not (gnus-predicate-implies-unread
1547 (gnus-agent-find-parameter group
1548 'agent-predicate)))))
1549 (articles (if fetch-all
1550 (gnus-uncompress-range (gnus-active group))
1551 (gnus-list-of-unread-articles group)))
1552 (gnus-decode-encoded-word-function 'identity)
1553 (file (gnus-agent-article-name ".overview" group)))
1556 ;; Add articles with marks to the list of article headers we want to
1557 ;; fetch. Don't fetch articles solely on the basis of a recent or seen
1558 ;; mark, but do fetch recent or seen articles if they have other, more
1559 ;; interesting marks. (We have to fetch articles with boring marks
1560 ;; because otherwise the agent will remove their marks.)
1561 (dolist (arts (gnus-info-marks (gnus-get-info group)))
1562 (unless (memq (car arts) '(seen recent killed cache))
1563 (setq articles (gnus-range-add articles (cdr arts)))))
1564 (setq articles (sort (gnus-uncompress-sequence articles) '<)))
1566 ;; At this point, I have the list of articles to consider for
1567 ;; fetching. This is the list that I'll return to my caller. Some
1568 ;; of these articles may have already been fetched. That's OK as
1569 ;; the fetch article code will filter those out. Internally, I'll
1570 ;; filter this list to just those articles whose headers need to
1572 (let ((articles articles))
1573 ;; Remove known articles.
1574 (when (and (or gnus-agent-cache
1576 (gnus-agent-load-alist group))
1577 ;; Remove articles marked as downloaded.
1579 ;; I want to fetch all headers in the active range.
1580 ;; Therefore, exclude only those headers that are in the
1582 ;; NOTE: This is probably NOT what I want to do after
1583 ;; agent expiration in this group.
1584 (setq articles (gnus-agent-uncached-articles articles group))
1586 ;; I want to only fetch those headers that have never been
1587 ;; fetched. Therefore, exclude all headers that are, or
1588 ;; WERE, in the article alist.
1589 (let ((low (1+ (caar (last gnus-agent-article-alist))))
1590 (high (cdr (gnus-active group))))
1591 ;; Low can be greater than High when the same group is
1592 ;; fetched twice in the same session {The first fetch will
1593 ;; fill the article alist such that (last
1594 ;; gnus-agent-article-alist) equals (cdr (gnus-active
1595 ;; group))}. The addition of one(the 1+ above) then
1596 ;; forces Low to be greater than High. When this happens,
1597 ;; gnus-list-range-intersection returns nil which
1598 ;; indicates that no headers need to be fetched. -- Kevin
1599 (setq articles (gnus-list-range-intersection
1600 articles (list (cons low high)))))))
1603 10 "gnus-agent-fetch-headers: undownloaded articles are '%s'"
1604 (gnus-compress-sequence articles t))
1607 (set-buffer nntp-server-buffer)
1611 (gnus-message 7 "Fetching headers for %s..." group)
1614 (gnus-make-directory (nnheader-translate-file-chars
1615 (file-name-directory file) t))
1617 (unless (eq 'nov (gnus-retrieve-headers articles group))
1618 (nnvirtual-convert-headers))
1619 (gnus-agent-check-overview-buffer)
1620 ;; Move these headers to the overview buffer so that
1621 ;; gnus-agent-braid-nov can merge them with the contents
1624 gnus-agent-overview-buffer (point-min) (point-max))
1625 (when (file-exists-p file)
1626 (gnus-agent-braid-nov group articles file))
1627 (let ((coding-system-for-write
1628 gnus-agent-file-coding-system))
1629 (gnus-agent-check-overview-buffer)
1630 (write-region (point-min) (point-max) file nil 'silent))
1631 (gnus-agent-save-alist group articles nil)
1635 (nnheader-insert-file-contents file)))))
1638 (defsubst gnus-agent-copy-nov-line (article)
1640 (set-buffer gnus-agent-overview-buffer)
1641 (while (and (not (eobp))
1642 (< (setq art (read (current-buffer))) article))
1646 (not (eq article art)))
1647 (set-buffer nntp-server-buffer)
1649 (setq e (progn (forward-line 1) (point)))
1650 (set-buffer nntp-server-buffer)
1651 (insert-buffer-substring gnus-agent-overview-buffer b e))))
1653 (defun gnus-agent-braid-nov (group articles file)
1654 "Merge agent overview data with given file.
1655 Takes headers for ARTICLES from `gnus-agent-overview-buffer' and the given
1656 FILE and places the combined headers into `nntp-server-buffer'."
1658 (set-buffer gnus-agent-overview-buffer)
1659 (goto-char (point-min))
1660 (set-buffer nntp-server-buffer)
1662 (nnheader-insert-file-contents file)
1663 (goto-char (point-max))
1665 (unless (looking-at "[0-9]+\t")
1666 ;; Remove corrupted lines
1668 1 "Overview %s is corrupted. Removing corrupted lines..." file)
1669 (goto-char (point-min))
1671 (if (looking-at "[0-9]+\t")
1673 (delete-region (point) (progn (forward-line 1) (point)))))
1675 (unless (or (= (point-min) (point-max))
1676 (< (setq last (read (current-buffer))) (car articles)))
1677 ;; We do it the hard way.
1678 (when (nnheader-find-nov-line (car articles))
1679 ;; Replacing existing NOV entry
1680 (delete-region (point) (progn (forward-line 1) (point))))
1681 (gnus-agent-copy-nov-line (pop articles))
1685 (while (let ((art (read (current-buffer))))
1686 (cond ((< art (car articles))
1689 ((= art (car articles))
1692 (point) (progn (forward-line 1) (point)))
1698 (gnus-agent-copy-nov-line (pop articles)))))
1700 ;; Copy the rest lines
1701 (set-buffer nntp-server-buffer)
1702 (goto-char (point-max))
1705 (set-buffer gnus-agent-overview-buffer)
1707 (while (<= (read (current-buffer)) last)
1710 (setq start (point))
1711 (set-buffer nntp-server-buffer))
1712 (insert-buffer-substring gnus-agent-overview-buffer start))))
1714 ;; Keeps the compiler from warning about the free variable in
1715 ;; gnus-agent-read-agentview.
1717 (defvar gnus-agent-read-agentview))
1719 (defun gnus-agent-load-alist (group)
1720 "Load the article-state alist for GROUP."
1721 ;; Bind free variable that's used in `gnus-agent-read-agentview'.
1722 (let ((gnus-agent-read-agentview group))
1723 (setq gnus-agent-article-alist
1724 (gnus-cache-file-contents
1725 (gnus-agent-article-name ".agentview" group)
1726 'gnus-agent-file-loading-cache
1727 'gnus-agent-read-agentview))))
1729 ;; Save format may be either 1 or 2. Two is the new, compressed
1730 ;; format that is still being tested. Format 1 is uncompressed but
1731 ;; known to be reliable.
1732 (defconst gnus-agent-article-alist-save-format 2)
1734 (defun gnus-agent-read-agentview (file)
1735 "Load FILE and do a `read' there."
1738 (nnheader-insert-file-contents file)
1739 (goto-char (point-min))
1740 (let ((alist (read (current-buffer)))
1741 (version (condition-case nil (read (current-buffer))
1747 (let ((inhibit-quit t)
1749 (gnus-agent-open-history)
1750 (set-buffer (gnus-agent-history-buffer))
1751 (goto-char (point-min))
1753 (if (and (looking-at
1754 "[^\t\n]+\t\\([0-9]+\\)\t\\([^ \n]+\\) \\([0-9]+\\)")
1755 (string= (match-string 2)
1756 gnus-agent-read-agentview)
1757 (setq entry (assoc (string-to-number (match-string 3)) alist)))
1758 (setcdr entry (string-to-number (match-string 1))))
1760 (gnus-agent-close-history)
1761 (setq changed-version t)))
1763 (setq changed-version (not (= 1 gnus-agent-article-alist-save-format))))
1768 (let ((state (car comp-list))
1769 (sequence (gnus-uncompress-sequence
1771 (mapcar (lambda (article-id)
1772 (setq uncomp (cons (cons article-id state) uncomp)))
1775 (setq alist (sort uncomp 'car-less-than-car)))))
1776 (when changed-version
1777 (let ((gnus-agent-article-alist alist))
1778 (gnus-agent-save-alist gnus-agent-read-agentview)))
1781 (defun gnus-agent-save-alist (group &optional articles state dir)
1782 "Save the article-state alist for GROUP."
1783 (let* ((file-name-coding-system nnmail-pathname-coding-system)
1784 (prev (cons nil gnus-agent-article-alist))
1786 print-level print-length item article)
1787 (while (setq article (pop articles))
1788 (while (and (cdr prev)
1789 (< (caadr prev) article))
1790 (setq prev (cdr prev)))
1793 (setcdr prev (list (cons article state))))
1794 ((> (caadr prev) article)
1795 (setcdr prev (cons (cons article state) (cdr prev))))
1796 ((= (caadr prev) article)
1797 (setcdr (cadr prev) state)))
1798 (setq prev (cdr prev)))
1799 (setq gnus-agent-article-alist (cdr all))
1801 (gnus-make-directory dir)
1802 (gnus-make-directory (gnus-agent-article-name "" group)))
1803 (with-temp-file (if dir
1804 (expand-file-name ".agentview" dir)
1805 (gnus-agent-article-name ".agentview" group))
1806 (cond ((eq gnus-agent-article-alist-save-format 1)
1807 (princ gnus-agent-article-alist (current-buffer)))
1808 ((eq gnus-agent-article-alist-save-format 2)
1809 (let ((compressed nil))
1810 (mapcar (lambda (pair)
1811 (let* ((article-id (car pair))
1812 (day-of-download (cdr pair))
1813 (comp-list (assq day-of-download compressed)))
1816 (cons article-id (cdr comp-list)))
1818 (cons (list day-of-download article-id)
1820 nil)) gnus-agent-article-alist)
1821 (mapcar (lambda (comp-list)
1823 (gnus-compress-sequence
1824 (nreverse (cdr comp-list)))))
1826 (princ compressed (current-buffer)))))
1828 (princ gnus-agent-article-alist-save-format (current-buffer))
1831 (defun gnus-agent-article-name (article group)
1832 (expand-file-name article
1833 (file-name-as-directory
1834 (gnus-agent-group-pathname group))))
1836 (defun gnus-agent-batch-confirmation (msg)
1837 "Show error message and return t."
1838 (gnus-message 1 msg)
1842 (defun gnus-agent-batch-fetch ()
1843 "Start Gnus and fetch session."
1846 (let ((gnus-agent-confirmation-function 'gnus-agent-batch-confirmation))
1847 (gnus-agent-fetch-session))
1850 (defun gnus-agent-fetch-session ()
1851 "Fetch all articles and headers that are eligible for fetching."
1853 (unless gnus-agent-covered-methods
1854 (error "No servers are covered by the Gnus agent"))
1855 (unless gnus-plugged
1856 (error "Can't fetch articles while Gnus is unplugged"))
1857 (let ((methods (gnus-agent-covered-methods))
1858 groups group gnus-command-method)
1861 (setq gnus-command-method (car methods))
1862 (when (and (or (gnus-server-opened gnus-command-method)
1863 (gnus-open-server gnus-command-method))
1864 (gnus-online gnus-command-method))
1865 (setq groups (gnus-groups-from-server (car methods)))
1866 (gnus-agent-with-fetch
1867 (while (setq group (pop groups))
1868 (when (<= (gnus-group-level group)
1869 gnus-agent-handle-level)
1870 (if (or debug-on-error debug-on-quit)
1871 (gnus-agent-fetch-group-1
1872 group gnus-command-method)
1874 (gnus-agent-fetch-group-1
1875 group gnus-command-method)
1877 (unless (funcall gnus-agent-confirmation-function
1878 (format "Error %s. Continue? "
1879 (error-message-string err)))
1880 (error "Cannot fetch articles into the Gnus agent")))
1882 (unless (funcall gnus-agent-confirmation-function
1884 "Quit fetching session %s. Continue? "
1885 (error-message-string err)))
1887 "Cannot fetch articles into the Gnus agent")))))))))
1888 (setq methods (cdr methods)))
1889 (gnus-run-hooks 'gnus-agent-fetched-hook)
1890 (gnus-message 6 "Finished fetching articles into the Gnus agent"))))
1892 (defun gnus-agent-fetch-group-1 (group method)
1894 (let ((gnus-command-method method)
1895 (gnus-newsgroup-name group)
1896 (gnus-newsgroup-dependencies gnus-newsgroup-dependencies)
1897 (gnus-newsgroup-headers gnus-newsgroup-headers)
1898 (gnus-newsgroup-scored gnus-newsgroup-scored)
1899 (gnus-use-cache gnus-use-cache)
1900 (gnus-summary-expunge-below gnus-summary-expunge-below)
1901 (gnus-summary-mark-below gnus-summary-mark-below)
1902 (gnus-orphan-score gnus-orphan-score)
1903 ;; Maybe some other gnus-summary local variables should also
1909 category predicate info marks score-param
1911 (unless (gnus-check-group group)
1912 (error "Can't open server for %s" group))
1915 (when (or gnus-newsgroup-active
1917 (gnus-activate-group group))
1918 (let ((marked-articles gnus-newsgroup-downloadable))
1919 ;; Identify the articles marked for download
1920 (unless gnus-newsgroup-active
1921 ;; The variable gnus-newsgroup-active was selected as I need
1922 ;; a gnus-summary local variable that is NOT bound to any
1923 ;; value (its global value should default to nil).
1924 (dolist (mark gnus-agent-download-marks)
1925 (let ((arts (cdr (assq mark (gnus-info-marks
1926 (setq info (gnus-get-info group)))))))
1928 (setq marked-articles (nconc (gnus-uncompress-range arts)
1931 (setq marked-articles (sort marked-articles '<))
1933 ;; Fetch any new articles from the server
1934 (setq articles (gnus-agent-fetch-headers group))
1936 ;; Merge new articles with marked
1937 (setq articles (sort (append marked-articles articles) '<))
1940 ;; Parse them and see which articles we want to fetch.
1941 (setq gnus-newsgroup-dependencies
1942 (or gnus-newsgroup-dependencies
1943 (make-vector (length articles) 0)))
1944 (setq gnus-newsgroup-headers
1945 (or gnus-newsgroup-headers
1946 (gnus-get-newsgroup-headers-xover articles nil nil
1948 ;; `gnus-agent-overview-buffer' may be killed for
1949 ;; timeout reason. If so, recreate it.
1950 (gnus-agent-create-buffer)
1952 ;; Figure out how to select articles in this group
1953 (setq category (gnus-group-category group))
1957 (gnus-agent-find-parameter group 'agent-predicate)))
1959 ;; If the selection predicate requires scoring, score each header
1960 (unless (memq predicate '(gnus-agent-true gnus-agent-false))
1962 (gnus-agent-find-parameter group 'agent-score-file)))
1963 ;; Translate score-param into real one
1966 ((eq score-param 'file)
1967 (setq score-param (gnus-all-score-files group)))
1968 ((stringp (car score-param)))
1970 (setq score-param (list (list score-param)))))
1972 (gnus-score-headers score-param))))
1974 (unless (and (eq predicate 'gnus-agent-false)
1975 (not marked-articles))
1976 (let ((arts (list nil)))
1977 (let ((arts-tail arts)
1978 (alist (gnus-agent-load-alist group))
1979 (marked-articles marked-articles)
1980 (gnus-newsgroup-headers gnus-newsgroup-headers))
1981 (while (setq gnus-headers (pop gnus-newsgroup-headers))
1982 (let ((num (mail-header-number gnus-headers)))
1983 ;; Determine if this article is already in the cache
1985 (> num (caar alist)))
1986 (setq alist (cdr alist)))
1988 (unless (and (eq num (caar alist))
1991 ;; Determine if this article was marked for download.
1992 (while (and marked-articles
1993 (> num (car marked-articles)))
1994 (setq marked-articles
1995 (cdr marked-articles)))
1997 ;; When this article is marked, or selected by the
1998 ;; predicate, add it to the download list
1999 (when (or (eq num (car marked-articles))
2002 (assq num gnus-newsgroup-scored))
2003 gnus-summary-default-score))
2004 (gnus-agent-long-article
2005 (gnus-agent-find-parameter
2006 group 'agent-long-article))
2007 (gnus-agent-short-article
2008 (gnus-agent-find-parameter
2009 group 'agent-short-article))
2010 (gnus-agent-low-score
2011 (gnus-agent-find-parameter
2012 group 'agent-low-score))
2013 (gnus-agent-high-score
2014 (gnus-agent-find-parameter
2015 group 'agent-high-score))
2016 (gnus-agent-expire-days
2017 (gnus-agent-find-parameter
2018 group 'agent-days-until-old)))
2019 (funcall predicate)))
2020 (gnus-agent-append-to-list arts-tail num))))))
2022 (let (fetched-articles)
2023 ;; Fetch all selected articles
2024 (setq gnus-newsgroup-undownloaded
2025 (gnus-sorted-ndifference
2026 gnus-newsgroup-undownloaded
2027 (setq fetched-articles
2029 (gnus-agent-fetch-articles group (cdr arts))
2032 (let ((unfetched-articles
2033 (gnus-sorted-ndifference (cdr arts) fetched-articles)))
2034 (if gnus-newsgroup-active
2035 ;; Update the summary buffer
2037 (dolist (article marked-articles)
2038 (gnus-summary-set-agent-mark article t))
2039 (dolist (article fetched-articles)
2040 (if gnus-agent-mark-unread-after-downloaded
2041 (gnus-summary-mark-article
2042 article gnus-unread-mark))
2043 (when (gnus-summary-goto-subject article nil t)
2044 (gnus-summary-update-download-mark article)))
2045 (dolist (article unfetched-articles)
2046 (gnus-summary-mark-article
2047 article gnus-canceled-mark)))
2049 ;; Update the group buffer.
2051 ;; When some, or all, of the marked articles came
2052 ;; from the download mark. Remove that mark. I
2053 ;; didn't do this earlier as I only want to remove
2054 ;; the marks after the fetch is completed.
2056 (dolist (mark gnus-agent-download-marks)
2057 (when (eq mark 'download)
2059 (assq mark (gnus-info-marks
2060 (setq info (gnus-get-info group))))))
2061 (when (cdr marked-arts)
2063 (delq marked-arts (gnus-info-marks info)))
2064 (gnus-info-set-marks info marks)))))
2065 (let ((read (gnus-info-read
2066 (or info (setq info (gnus-get-info group))))))
2068 info (gnus-add-to-range read unfetched-articles)))
2070 (gnus-group-update-group group t)
2074 (concat "(gnus-group-set-info '"
2075 (gnus-prin1-to-string info)
2079 ;;; Agent Category Mode
2082 (defvar gnus-category-mode-hook nil
2083 "Hook run in `gnus-category-mode' buffers.")
2085 (defvar gnus-category-line-format " %(%20c%): %g\n"
2086 "Format of category lines.
2088 Valid specifiers include:
2089 %c Topic name (string)
2090 %g The number of groups in the topic (integer)
2092 General format specifiers can also be used. See Info node
2093 `(gnus)Formatting Variables'.")
2095 (defvar gnus-category-mode-line-format "Gnus: %%b"
2096 "The format specification for the category mode line.")
2098 (defvar gnus-agent-predicate 'false
2099 "The selection predicate used when no other source is available.")
2101 (defvar gnus-agent-short-article 100
2102 "Articles that have fewer lines than this are short.")
2104 (defvar gnus-agent-long-article 200
2105 "Articles that have more lines than this are long.")
2107 (defvar gnus-agent-low-score 0
2108 "Articles that have a score lower than this have a low score.")
2110 (defvar gnus-agent-high-score 0
2111 "Articles that have a score higher than this have a high score.")
2114 ;;; Internal variables.
2116 (defvar gnus-category-buffer "*Agent Category*")
2118 (defvar gnus-category-line-format-alist
2119 `((?c gnus-tmp-name ?s)
2120 (?g gnus-tmp-groups ?d)))
2122 (defvar gnus-category-mode-line-format-alist
2123 `((?u user-defined ?s)))
2125 (defvar gnus-category-line-format-spec nil)
2126 (defvar gnus-category-mode-line-format-spec nil)
2128 (defvar gnus-category-mode-map nil)
2129 (put 'gnus-category-mode 'mode-class 'special)
2131 (unless gnus-category-mode-map
2132 (setq gnus-category-mode-map (make-sparse-keymap))
2133 (suppress-keymap gnus-category-mode-map)
2135 (gnus-define-keys gnus-category-mode-map
2136 "q" gnus-category-exit
2137 "k" gnus-category-kill
2138 "c" gnus-category-copy
2139 "a" gnus-category-add
2140 "e" gnus-agent-customize-category
2141 "p" gnus-category-edit-predicate
2142 "g" gnus-category-edit-groups
2143 "s" gnus-category-edit-score
2144 "l" gnus-category-list
2146 "\C-c\C-i" gnus-info-find-node
2147 "\C-c\C-b" gnus-bug))
2149 (defvar gnus-category-menu-hook nil
2150 "*Hook run after the creation of the menu.")
2152 (defun gnus-category-make-menu-bar ()
2153 (gnus-turn-off-edit-menu 'category)
2154 (unless (boundp 'gnus-category-menu)
2156 gnus-category-menu gnus-category-mode-map ""
2158 ["Add" gnus-category-add t]
2159 ["Kill" gnus-category-kill t]
2160 ["Copy" gnus-category-copy t]
2161 ["Edit category" gnus-agent-customize-category t]
2162 ["Edit predicate" gnus-category-edit-predicate t]
2163 ["Edit score" gnus-category-edit-score t]
2164 ["Edit groups" gnus-category-edit-groups t]
2165 ["Exit" gnus-category-exit t]))
2167 (gnus-run-hooks 'gnus-category-menu-hook)))
2169 (defun gnus-category-mode ()
2170 "Major mode for listing and editing agent categories.
2172 All normal editing commands are switched off.
2173 \\<gnus-category-mode-map>
2174 For more in-depth information on this mode, read the manual
2175 \(`\\[gnus-info-find-node]').
2177 The following commands are available:
2179 \\{gnus-category-mode-map}"
2181 (when (gnus-visual-p 'category-menu 'menu)
2182 (gnus-category-make-menu-bar))
2183 (kill-all-local-variables)
2184 (gnus-simplify-mode-line)
2185 (setq major-mode 'gnus-category-mode)
2186 (setq mode-name "Category")
2187 (gnus-set-default-directory)
2188 (setq mode-line-process nil)
2189 (use-local-map gnus-category-mode-map)
2190 (buffer-disable-undo)
2191 (setq truncate-lines t)
2192 (setq buffer-read-only t)
2193 (gnus-run-hooks 'gnus-category-mode-hook))
2195 (defalias 'gnus-category-position-point 'gnus-goto-colon)
2197 (defun gnus-category-insert-line (category)
2198 (let* ((gnus-tmp-name (format "%s" (car category)))
2199 (gnus-tmp-groups (length (gnus-agent-cat-groups category))))
2201 (gnus-add-text-properties
2205 (eval gnus-category-line-format-spec))
2206 (list 'gnus-category gnus-tmp-name))))
2208 (defun gnus-enter-category-buffer ()
2209 "Go to the Category buffer."
2211 (gnus-category-setup-buffer)
2212 (gnus-configure-windows 'category)
2213 (gnus-category-prepare))
2215 (defun gnus-category-setup-buffer ()
2216 (unless (get-buffer gnus-category-buffer)
2218 (set-buffer (gnus-get-buffer-create gnus-category-buffer))
2219 (gnus-category-mode))))
2221 (defun gnus-category-prepare ()
2222 (gnus-set-format 'category-mode)
2223 (gnus-set-format 'category t)
2224 (let ((alist gnus-category-alist)
2225 (buffer-read-only nil))
2228 (gnus-category-insert-line (pop alist)))
2229 (goto-char (point-min))
2230 (gnus-category-position-point)))
2232 (defun gnus-category-name ()
2233 (or (intern (get-text-property (gnus-point-at-bol) 'gnus-category))
2234 (error "No category on the current line")))
2236 (defun gnus-category-read ()
2237 "Read the category alist."
2238 (setq gnus-category-alist
2242 (nnheader-insert-file-contents (nnheader-concat gnus-agent-directory "lib/categories"))
2243 (goto-char (point-min))
2244 ;; This code isn't temp, it will be needed so long as
2245 ;; anyone may be migrating from an older version.
2247 ;; Once we're certain that people will not revert to an
2248 ;; earlier version, we can take out the old-list code in
2249 ;; gnus-category-write.
2250 (let* ((old-list (read (current-buffer)))
2251 (new-list (ignore-errors (read (current-buffer)))))
2254 ;; Convert from a positional list to an alist.
2264 '(agent-predicate agent-score-file agent-groups))))
2267 (list (gnus-agent-cat-make 'default 'short)))))
2269 (defun gnus-category-write ()
2270 "Write the category alist."
2271 (setq gnus-category-predicate-cache nil
2272 gnus-category-group-cache nil)
2273 (gnus-make-directory (nnheader-concat gnus-agent-directory "lib"))
2274 (with-temp-file (nnheader-concat gnus-agent-directory "lib/categories")
2275 ;; This prin1 is temporary. It exists so that people can revert
2276 ;; to an earlier version of gnus-agent.
2277 (prin1 (mapcar (lambda (c)
2279 (cdr (assoc 'agent-predicate c))
2280 (cdr (assoc 'agent-score-file c))
2281 (cdr (assoc 'agent-groups c))))
2282 gnus-category-alist)
2285 (prin1 gnus-category-alist (current-buffer))))
2287 (defun gnus-category-edit-predicate (category)
2288 "Edit the predicate for CATEGORY."
2289 (interactive (list (gnus-category-name)))
2290 (let ((info (assq category gnus-category-alist)))
2292 (gnus-agent-cat-predicate info)
2293 (format "Editing the select predicate for category %s" category)
2294 `(lambda (predicate)
2295 ;; Avoid run-time execution of setf form
2296 ;; (setf (gnus-agent-cat-predicate (assq ',category gnus-category-alist))
2298 ;; use its expansion instead:
2299 (gnus-agent-cat-set-property (assq ',category gnus-category-alist)
2300 'agent-predicate predicate)
2302 (gnus-category-write)
2303 (gnus-category-list)))))
2305 (defun gnus-category-edit-score (category)
2306 "Edit the score expression for CATEGORY."
2307 (interactive (list (gnus-category-name)))
2308 (let ((info (assq category gnus-category-alist)))
2310 (gnus-agent-cat-score-file info)
2311 (format "Editing the score expression for category %s" category)
2312 `(lambda (score-file)
2313 ;; Avoid run-time execution of setf form
2314 ;; (setf (gnus-agent-cat-score-file (assq ',category gnus-category-alist))
2316 ;; use its expansion instead:
2317 (gnus-agent-cat-set-property (assq ',category gnus-category-alist)
2318 'agent-score-file score-file)
2320 (gnus-category-write)
2321 (gnus-category-list)))))
2323 (defun gnus-category-edit-groups (category)
2324 "Edit the group list for CATEGORY."
2325 (interactive (list (gnus-category-name)))
2326 (let ((info (assq category gnus-category-alist)))
2328 (gnus-agent-cat-groups info)
2329 (format "Editing the group list for category %s" category)
2331 ;; Avoid run-time execution of setf form
2332 ;; (setf (gnus-agent-cat-groups (assq ',category gnus-category-alist))
2334 ;; use its expansion instead:
2335 (gnus-agent-set-cat-groups (assq ',category gnus-category-alist)
2338 (gnus-category-write)
2339 (gnus-category-list)))))
2341 (defun gnus-category-kill (category)
2342 "Kill the current category."
2343 (interactive (list (gnus-category-name)))
2344 (let ((info (assq category gnus-category-alist))
2345 (buffer-read-only nil))
2347 (setq gnus-category-alist (delq info gnus-category-alist))
2348 (gnus-category-write)))
2350 (defun gnus-category-copy (category to)
2351 "Copy the current category."
2352 (interactive (list (gnus-category-name) (intern (read-string "New name: "))))
2353 (let ((info (assq category gnus-category-alist)))
2354 (push (let ((newcat (gnus-copy-sequence info)))
2355 (setf (gnus-agent-cat-name newcat) to)
2356 (setf (gnus-agent-cat-groups newcat) nil)
2358 gnus-category-alist)
2359 (gnus-category-write)
2360 (gnus-category-list)))
2362 (defun gnus-category-add (category)
2363 "Create a new category."
2364 (interactive "SCategory name: ")
2365 (when (assq category gnus-category-alist)
2366 (error "Category %s already exists" category))
2367 (push (gnus-agent-cat-make category)
2368 gnus-category-alist)
2369 (gnus-category-write)
2370 (gnus-category-list))
2372 (defun gnus-category-list ()
2373 "List all categories."
2375 (gnus-category-prepare))
2377 (defun gnus-category-exit ()
2378 "Return to the group buffer."
2380 (kill-buffer (current-buffer))
2381 (gnus-configure-windows 'group t))
2383 ;; To avoid having 8-bit characters in the source file.
2384 (defvar gnus-category-not (list '! 'not (intern (format "%c" 172))))
2386 (defvar gnus-category-predicate-alist
2387 '((spam . gnus-agent-spam-p)
2388 (short . gnus-agent-short-p)
2389 (long . gnus-agent-long-p)
2390 (low . gnus-agent-low-scored-p)
2391 (high . gnus-agent-high-scored-p)
2392 (read . gnus-agent-read-p)
2393 (true . gnus-agent-true)
2394 (false . gnus-agent-false))
2395 "Mapping from short score predicate symbols to predicate functions.")
2397 (defun gnus-agent-spam-p ()
2398 "Say whether an article is spam or not."
2399 (unless gnus-agent-spam-hashtb
2400 (setq gnus-agent-spam-hashtb (gnus-make-hashtable 1000)))
2401 (if (not (equal (mail-header-references gnus-headers) ""))
2403 (let ((string (gnus-simplify-subject (mail-header-subject gnus-headers))))
2405 (gnus-gethash string gnus-agent-spam-hashtb)
2406 (gnus-sethash string t gnus-agent-spam-hashtb)))))
2408 (defun gnus-agent-short-p ()
2409 "Say whether an article is short or not."
2410 (< (mail-header-lines gnus-headers) gnus-agent-short-article))
2412 (defun gnus-agent-long-p ()
2413 "Say whether an article is long or not."
2414 (> (mail-header-lines gnus-headers) gnus-agent-long-article))
2416 (defun gnus-agent-low-scored-p ()
2417 "Say whether an article has a low score or not."
2418 (< gnus-score gnus-agent-low-score))
2420 (defun gnus-agent-high-scored-p ()
2421 "Say whether an article has a high score or not."
2422 (> gnus-score gnus-agent-high-score))
2424 (defun gnus-agent-read-p ()
2425 "Say whether an article is read or not."
2426 (gnus-member-of-range (mail-header-number gnus-headers)
2427 (gnus-info-read (gnus-get-info gnus-newsgroup-name))))
2429 (defun gnus-category-make-function (predicate)
2430 "Make a function from PREDICATE."
2431 (let ((func (gnus-category-make-function-1 predicate)))
2432 (if (and (= (length func) 1)
2433 (symbolp (car func)))
2435 (gnus-byte-compile `(lambda () ,func)))))
2437 (defun gnus-agent-true ()
2441 (defun gnus-agent-false ()
2445 (defun gnus-category-make-function-1 (predicate)
2446 "Make a function from PREDICATE."
2448 ;; Functions are just returned as is.
2449 ((or (symbolp predicate)
2450 (functionp predicate))
2451 `(,(or (cdr (assq predicate gnus-category-predicate-alist))
2453 ;; More complex predicate.
2456 ((memq (car predicate) '(& and))
2458 ((memq (car predicate) '(| or))
2460 ((memq (car predicate) gnus-category-not)
2462 ,@(mapcar 'gnus-category-make-function-1 (cdr predicate))))
2464 (error "Unknown predicate type: %s" predicate))))
2466 (defun gnus-get-predicate (predicate)
2467 "Return the function implementing PREDICATE."
2468 (or (cdr (assoc predicate gnus-category-predicate-cache))
2469 (let ((func (gnus-category-make-function predicate)))
2470 (setq gnus-category-predicate-cache
2471 (nconc gnus-category-predicate-cache
2472 (list (cons predicate func))))
2475 (defun gnus-predicate-implies-unread (predicate)
2476 "Say whether PREDICATE implies unread articles only.
2477 It is okay to miss some cases, but there must be no false positives.
2478 That is, if this predicate returns true, then indeed the predicate must
2479 return only unread articles."
2480 (eq t (gnus-function-implies-unread-1
2481 (gnus-category-make-function-1 predicate))))
2483 (defun gnus-function-implies-unread-1 (function)
2484 "Recursively evaluate a predicate function to determine whether it can select
2485 any read articles. Returns t if the function is known to never
2486 return read articles, nil when it is known to always return read
2487 articles, and t_nil when the function may return both read and unread
2489 (let ((func (car function))
2490 (args (mapcar 'gnus-function-implies-unread-1 (cdr function))))
2491 (cond ((eq func 'and)
2492 (cond ((memq t args) ; if any argument returns only unread articles
2493 ;; then that argument constrains the result to only unread articles.
2495 ((memq 't_nil args) ; if any argument is indeterminate
2496 ;; then the result is indeterminate
2499 (cond ((memq nil args) ; if any argument returns read articles
2500 ;; then that argument ensures that the results includes read articles.
2502 ((memq 't_nil args) ; if any argument is indeterminate
2503 ;; then that argument ensures that the results are indeterminate
2505 (t ; if all arguments return only unread articles
2506 ;; then the result returns only unread articles
2509 (cond ((eq (car args) 't_nil) ; if the argument is indeterminate
2510 ; then the result is indeterminate
2513 ; toggle the result to be the opposite of the argument
2515 ((eq func 'gnus-agent-read-p)
2516 nil) ; The read predicate NEVER returns unread articles
2517 ((eq func 'gnus-agent-false)
2518 t) ; The false predicate returns t as the empty set excludes all read articles
2519 ((eq func 'gnus-agent-true)
2520 nil) ; The true predicate ALWAYS returns read articles
2521 ((catch 'found-match
2522 (let ((alist gnus-category-predicate-alist))
2524 (if (eq func (cdar alist))
2525 (throw 'found-match t)
2526 (setq alist (cdr alist))))))
2527 't_nil) ; All other predicates return read and unread articles
2529 (error "Unknown predicate function: %s" function)))))
2531 (defun gnus-group-category (group)
2532 "Return the category GROUP belongs to."
2533 (unless gnus-category-group-cache
2534 (setq gnus-category-group-cache (gnus-make-hashtable 1000))
2535 (let ((cs gnus-category-alist)
2537 (while (setq cat (pop cs))
2538 (setq groups (gnus-agent-cat-groups cat))
2540 (gnus-sethash (pop groups) cat gnus-category-group-cache)))))
2541 (or (gnus-gethash group gnus-category-group-cache)
2542 (assq 'default gnus-category-alist)))
2544 (defun gnus-agent-expire-group (group &optional articles force)
2545 "Expire all old articles in GROUP.
2546 If you want to force expiring of certain articles, this function can
2547 take ARTICLES, and FORCE parameters as well.
2549 The articles on which the expiration process runs are selected as follows:
2550 if ARTICLES is null, all read and unmarked articles.
2551 if ARTICLES is t, all articles.
2552 if ARTICLES is a list, just those articles.
2553 FORCE is equivalent to setting the expiration predicates to true."
2555 (list (let ((def (or (gnus-group-group-name)
2556 gnus-newsgroup-name)))
2557 (let ((select (read-string (if def
2558 (concat "Group Name ("
2561 (if (and (equal "" select)
2567 (gnus-agent-expire articles group force)
2568 (let ( ;; Bind gnus-agent-expire-stats to enable tracking of
2569 ;; expiration statistics of this single group
2570 (gnus-agent-expire-stats (list 0 0 0.0)))
2571 (if (or (not (eq articles t))
2573 (concat "Are you sure that you want to "
2574 "expire all articles in " group ".")))
2575 (let ((gnus-command-method (gnus-find-method-for-group group))
2576 (overview (gnus-get-buffer-create " *expire overview*"))
2579 (let ((active-file (gnus-agent-lib-file "active")))
2580 (when (file-exists-p active-file)
2582 (nnheader-insert-file-contents active-file)
2583 (gnus-active-to-gnus-format
2585 (setq orig (gnus-make-hashtable
2586 (count-lines (point-min) (point-max))))))
2588 (gnus-agent-expire-group-1
2589 group overview (gnus-gethash-safe group orig)
2591 (gnus-agent-write-active active-file orig t)))
2592 (kill-buffer overview))))
2593 (gnus-message 4 (gnus-agent-expire-done-message)))))
2595 (defun gnus-agent-expire-group-1 (group overview active articles force)
2596 ;; Internal function - requires caller to have set
2597 ;; gnus-command-method, initialized overview buffer, and to have
2598 ;; provided a non-nil active
2600 (let ((dir (gnus-agent-group-pathname group)))
2601 (when (boundp 'gnus-agent-expire-current-dirs)
2602 (set 'gnus-agent-expire-current-dirs
2604 (symbol-value 'gnus-agent-expire-current-dirs))))
2606 (if (and (not force)
2607 (eq 'DISABLE (gnus-agent-find-parameter group
2608 'agent-enable-expiration)))
2609 (gnus-message 5 "Expiry skipping over %s" group)
2610 (gnus-message 5 "Expiring articles in %s" group)
2611 (gnus-agent-load-alist group)
2612 (let* ((stats (if (boundp 'gnus-agent-expire-stats)
2613 ;; Use the list provided by my caller
2614 (symbol-value 'gnus-agent-expire-stats)
2615 ;; otherwise use my own temporary list
2617 (info (gnus-get-info group))
2618 (alist gnus-agent-article-alist)
2619 (day (- (time-to-days (current-time))
2620 (gnus-agent-find-parameter group 'agent-days-until-old)))
2621 (specials (if (and alist
2623 ;; This could be a bit of a problem. I need to
2624 ;; keep the last article to avoid refetching
2625 ;; headers when using nntp in the backend. At
2626 ;; the same time, if someone uses a backend
2627 ;; that supports article moving then I may have
2628 ;; to remove the last article to complete the
2629 ;; move. Right now, I'm going to assume that
2630 ;; FORCE overrides specials.
2631 (list (caar (last alist)))))
2632 (unreads ;; Articles that are excluded from the
2633 ;; expiration process
2634 (cond (gnus-agent-expire-all
2635 ;; All articles are marked read by global decree
2638 ;; All articles are marked read by function
2642 ;; Unread articles are marked protected from
2643 ;; expiration Don't call
2644 ;; gnus-list-of-unread-articles as it returns
2645 ;; articles that have not been fetched into the
2648 (gnus-agent-unread-articles group)))
2650 ;; All articles EXCEPT those named by the caller
2651 ;; are protected from expiration
2652 (gnus-sorted-difference
2653 (gnus-uncompress-range
2655 (caar (last alist))))
2656 (sort articles '<)))))
2657 (marked ;; More articles that are excluded from the
2658 ;; expiration process
2659 (cond (gnus-agent-expire-all
2660 ;; All articles are unmarked by global decree
2663 ;; All articles are unmarked by function
2667 ;; All articles may as well be unmarked as the
2668 ;; unreads list already names the articles we are
2672 ;; Ticked and/or dormant articles are excluded
2675 (gnus-uncompress-range
2676 (cdr (assq 'tick (gnus-info-marks info))))
2677 (gnus-uncompress-range
2679 (gnus-info-marks info))))))))
2680 (nov-file (concat dir ".overview"))
2686 ;; The normal article alist contains elements that look like
2687 ;; (article# . fetch_date) I need to combine other
2688 ;; information with this list. For example, a flag indicating
2689 ;; that a particular article MUST BE KEPT. To do this, I'm
2690 ;; going to transform the elements to look like (article#
2691 ;; fetch_date keep_flag NOV_entry_marker) Later, I'll reverse
2692 ;; the process to generate the expired article alist.
2694 ;; Convert the alist elements to (article# fetch_date nil
2696 (setq dlist (mapcar (lambda (e)
2697 (list (car e) (cdr e) nil nil)) alist))
2699 ;; Convert the keep lists to elements that look like (article#
2700 ;; nil keep_flag nil) then append it to the expanded dlist
2701 ;; These statements are sorted by ascending precidence of the
2703 (setq dlist (nconc dlist
2705 (list e nil 'unread nil))
2707 (setq dlist (nconc dlist
2709 (list e nil 'marked nil))
2711 (setq dlist (nconc dlist
2713 (list e nil 'special nil))
2716 (set-buffer overview)
2718 (buffer-disable-undo)
2719 (when (file-exists-p nov-file)
2720 (gnus-message 7 "gnus-agent-expire: Loading overview...")
2721 (nnheader-insert-file-contents nov-file)
2722 (goto-char (point-min))
2725 (while (< (setq p (point)) (point-max))
2727 ;; If I successfully read an integer (the plus zero
2728 ;; ensures a numeric type), prepend a marker entry
2730 (push (list (+ 0 (read (current-buffer))) nil nil
2731 (set-marker (make-marker) p))
2734 (gnus-message 1 "gnus-agent-expire: read error \
2735 occurred when reading expression at %s in %s. Skipping to next \
2736 line." (point) nov-file)))
2737 ;; Whether I succeeded, or failed, it doesn't matter.
2738 ;; Move to the next line then try again.
2742 7 "gnus-agent-expire: Loading overview... Done"))
2743 (set-buffer-modified-p nil)
2745 ;; At this point, all of the information is in dlist. The
2746 ;; only problem is that much of it is spread across multiple
2747 ;; entries. Sort then MERGE!!
2748 (gnus-message 7 "gnus-agent-expire: Sorting entries... ")
2749 ;; If two entries have the same article-number then sort by
2750 ;; ascending keep_flag.
2757 (cond ((< (nth 0 a) (nth 0 b))
2759 ((> (nth 0 a) (nth 0 b))
2762 (let ((a (or (symbol-value (nth 2 a))
2764 (b (or (symbol-value (nth 2 b))
2767 (gnus-message 7 "gnus-agent-expire: Sorting entries... Done")
2768 (gnus-message 7 "gnus-agent-expire: Merging entries... ")
2769 (let ((dlist dlist))
2770 (while (cdr dlist) ; I'm not at the end-of-list
2771 (if (eq (caar dlist) (caadr dlist))
2772 (let ((first (cdr (car dlist)))
2773 (secnd (cdr (cadr dlist))))
2774 (setcar first (or (car first)
2775 (car secnd))) ; fetch_date
2776 (setq first (cdr first)
2778 (setcar first (or (car first)
2779 (car secnd))) ; Keep_flag
2780 (setq first (cdr first)
2782 (setcar first (or (car first)
2783 (car secnd))) ; NOV_entry_marker
2785 (setcdr dlist (cddr dlist)))
2786 (setq dlist (cdr dlist)))))
2787 (gnus-message 7 "gnus-agent-expire: Merging entries... Done")
2789 (let* ((len (float (length dlist)))
2793 (let ((new-completed (truncate (* 100.0
2794 (/ (setq cnt (1+ cnt))
2797 (when (> new-completed completed)
2798 (setq completed new-completed)
2799 (gnus-message 7 "%3d%% completed..." completed)))
2800 (let* ((entry (car dlist))
2801 (article-number (nth 0 entry))
2802 (fetch-date (nth 1 entry))
2803 (keep (nth 2 entry))
2804 (marker (nth 3 entry)))
2807 ;; Kept articles are unread, marked, or special.
2809 (gnus-agent-message 10
2810 "gnus-agent-expire: %s:%d: Kept %s article%s."
2811 group article-number keep (if fetch-date " and file" ""))
2813 (unless (file-exists-p
2814 (concat dir (number-to-string
2816 (setf (nth 1 entry) nil)
2817 (gnus-agent-message 3 "gnus-agent-expire cleared \
2818 download flag on %s:%d as the cached article file is missing."
2819 group (caar dlist)))
2821 (gnus-message 1 "gnus-agent-expire detected a \
2822 missing NOV entry. Run gnus-agent-regenerate-group to restore it.")))
2823 (gnus-agent-append-to-list
2825 (cons article-number fetch-date)))
2827 ;; The following articles are READ, UNMARKED, and
2828 ;; ORDINARY. See if they can be EXPIRED!!!
2831 ((not (integerp fetch-date))
2832 'read) ;; never fetched article (may expire
2834 ((not (file-exists-p
2835 (concat dir (number-to-string
2837 (setf (nth 1 entry) nil)
2838 'externally-expired) ;; Can't find the cached
2839 ;; article. Handle case
2840 ;; as though this article
2841 ;; was never fetched.
2843 ;; We now have the arrival day, so we see
2844 ;; whether it's old enough to be expired.
2850 ;; I found some reason to expire this entry.
2852 (let ((actions nil))
2853 (when (memq type '(forced expired))
2854 (ignore-errors ; Just being paranoid.
2855 (let ((file-name (concat dir (number-to-string
2857 (incf (nth 2 stats) (nth 7 (file-attributes file-name)))
2858 (incf (nth 1 stats))
2859 (delete-file file-name))
2860 (push "expired cached article" actions))
2861 (setf (nth 1 entry) nil)
2865 (push "NOV entry removed" actions)
2868 (incf (nth 0 stats))
2870 (let ((from (gnus-point-at-bol))
2871 (to (progn (forward-line 1) (point))))
2872 (incf (nth 2 stats) (- to from))
2873 (delete-region from to)))
2875 ;; If considering all articles is set, I can only
2876 ;; expire article IDs that are no longer in the
2877 ;; active range (That is, articles that preceed the
2878 ;; first article in the new alist).
2879 (if (and gnus-agent-consider-all-articles
2880 (>= article-number (car active)))
2881 ;; I have to keep this ID in the alist
2882 (gnus-agent-append-to-list
2883 tail-alist (cons article-number fetch-date))
2884 (push (format "Removed %s article number from \
2885 article alist" type) actions))
2888 (gnus-agent-message 8 "gnus-agent-expire: %s:%d: %s"
2889 group article-number
2890 (mapconcat 'identity actions ", ")))))
2893 10 "gnus-agent-expire: %s:%d: Article kept as \
2894 expiration tests failed." group article-number)
2895 (gnus-agent-append-to-list
2896 tail-alist (cons article-number fetch-date)))
2899 ;; Clean up markers as I want to recycle this buffer
2900 ;; over several groups.
2902 (set-marker marker nil))
2904 (setq dlist (cdr dlist))))
2906 (setq alist (cdr alist))
2908 (let ((inhibit-quit t))
2909 (unless (equal alist gnus-agent-article-alist)
2910 (setq gnus-agent-article-alist alist)
2911 (gnus-agent-save-alist group)
2913 ;; The active list changed, set the agent's active range
2914 ;; to match the beginning of the list.
2916 (setcar active (caar alist))))
2918 (when (buffer-modified-p)
2919 (let ((coding-system-for-write
2920 gnus-agent-file-coding-system))
2921 (gnus-make-directory dir)
2922 (write-region (point-min) (point-max) nov-file nil
2924 ;; clear the modified flag as that I'm not confused by
2925 ;; its status on the next pass through this routine.
2926 (set-buffer-modified-p nil)))
2928 (when (eq articles t)
2929 (gnus-summary-update-info))))))))
2931 (defun gnus-agent-expire (&optional articles group force)
2932 "Expire all old articles.
2933 If you want to force expiring of certain articles, this function can
2934 take ARTICLES, GROUP and FORCE parameters as well.
2936 The articles on which the expiration process runs are selected as follows:
2937 if ARTICLES is null, all read and unmarked articles.
2938 if ARTICLES is t, all articles.
2939 if ARTICLES is a list, just those articles.
2940 Setting GROUP will limit expiration to that group.
2941 FORCE is equivalent to setting the expiration predicates to true."
2945 (gnus-agent-expire-group group articles force)
2946 (if (or (not (eq articles t))
2947 (yes-or-no-p "Are you sure that you want to expire all \
2948 articles in every agentized group."))
2949 (let ((methods (gnus-agent-covered-methods))
2950 ;; Bind gnus-agent-expire-current-dirs to enable tracking
2951 ;; of agent directories.
2952 (gnus-agent-expire-current-dirs nil)
2953 ;; Bind gnus-agent-expire-stats to enable tracking of
2954 ;; expiration statistics across all groups
2955 (gnus-agent-expire-stats (list 0 0 0.0))
2956 gnus-command-method overview orig)
2957 (setq overview (gnus-get-buffer-create " *expire overview*"))
2959 (while (setq gnus-command-method (pop methods))
2960 (let ((active-file (gnus-agent-lib-file "active")))
2961 (when (file-exists-p active-file)
2963 (nnheader-insert-file-contents active-file)
2964 (gnus-active-to-gnus-format
2966 (setq orig (gnus-make-hashtable
2967 (count-lines (point-min) (point-max))))))
2968 (dolist (expiring-group (gnus-groups-from-server
2969 gnus-command-method))
2971 (gnus-gethash-safe expiring-group orig)))
2975 (gnus-agent-expire-group-1
2976 expiring-group overview active articles force)))))
2977 (gnus-agent-write-active active-file orig t))))
2978 (kill-buffer overview))
2979 (gnus-agent-expire-unagentized-dirs)
2980 (gnus-message 4 (gnus-agent-expire-done-message))))))
2982 (defun gnus-agent-expire-done-message ()
2983 (if (and (> gnus-verbose 4)
2984 (boundp 'gnus-agent-expire-stats))
2985 (let* ((stats (symbol-value 'gnus-agent-expire-stats))
2986 (size (nth 2 stats))
2987 (units '(B KB MB GB)))
2988 (while (and (> size 1024.0)
2990 (setq size (/ size 1024.0)
2993 (format "Expiry recovered %d NOV entries, deleted %d files,\
3000 (defun gnus-agent-expire-unagentized-dirs ()
3001 (when (and gnus-agent-expire-unagentized-dirs
3002 (boundp 'gnus-agent-expire-current-dirs))
3003 (let* ((keep (gnus-make-hashtable))
3004 ;; Formally bind gnus-agent-expire-current-dirs so that the
3005 ;; compiler will not complain about free references.
3006 (gnus-agent-expire-current-dirs
3007 (symbol-value 'gnus-agent-expire-current-dirs))
3010 (gnus-sethash gnus-agent-directory t keep)
3011 (while gnus-agent-expire-current-dirs
3012 (setq dir (pop gnus-agent-expire-current-dirs))
3013 (when (and (stringp dir)
3014 (file-directory-p dir))
3015 (while (not (gnus-gethash dir keep))
3016 (gnus-sethash dir t keep)
3017 (setq dir (file-name-directory (directory-file-name dir))))))
3024 "Given a directory, check it and its subdirectories for
3025 membership in the keep hash. If it isn't found, add
3027 (let ((files (directory-files d))
3029 (while (setq file (pop files))
3030 (cond ((equal file ".") ; Ignore self
3032 ((equal file "..") ; Ignore parent
3034 ((equal file ".overview")
3035 ;; Directory must contain .overview to be
3036 ;; agent's cache of a group.
3037 (let ((d (file-name-as-directory d))
3039 ;; Search ancestor's for last directory NOT
3040 ;; found in keep hash.
3041 (while (not (gnus-gethash
3042 (setq d (file-name-directory d)) keep))
3044 d (directory-file-name d)))
3045 ;; if ANY ancestor was NOT in keep hash and
3046 ;; it it's already in to-remove, add it to
3049 (not (member r to-remove)))
3050 (push r to-remove))))
3051 ((file-directory-p (setq file (nnheader-concat d file)))
3052 (funcall checker file)))))))))
3053 (funcall checker (expand-file-name gnus-agent-directory))
3055 (when (and to-remove
3056 (or gnus-expert-user
3058 "gnus-agent-expire has identified local directories that are\
3059 not currently required by any agentized group. Do you wish to consider\
3062 (let ((dir (pop to-remove)))
3063 (if (gnus-y-or-n-p (format "Delete %s? " dir))
3064 (let* (delete-recursive
3069 (if (file-directory-p f-or-d)
3071 (delete-directory f-or-d)
3074 (or (member f '("." ".."))
3075 (funcall delete-recursive
3078 (directory-files f-or-d))
3079 (delete-directory f-or-d)))
3080 (delete-file f-or-d)))))))
3081 (funcall delete-recursive dir))))))))))
3084 (defun gnus-agent-batch ()
3085 "Start Gnus, send queue and fetch session."
3087 (let ((init-file-user "")
3088 (gnus-always-read-dribble-file t))
3090 (let ((gnus-agent-confirmation-function 'gnus-agent-batch-confirmation))
3091 (gnus-group-send-queue)
3092 (gnus-agent-fetch-session)))
3094 (defun gnus-agent-unread-articles (group)
3095 (let* ((read (gnus-info-read (gnus-get-info group)))
3096 (known (gnus-agent-load-alist group))
3098 (tail-unread unread))
3099 (while (and known read)
3100 (let ((candidate (car (pop known))))
3101 (while (let* ((range (car read))
3102 (min (if (numberp range) range (car range)))
3103 (max (if (numberp range) range (cdr range))))
3104 (cond ((or (not min)
3106 (gnus-agent-append-to-list tail-unread candidate)
3109 (setq read (cdr read))
3110 ;; return t so that I always loop one more
3111 ;; time. If I just iterated off the end of
3112 ;; read, min will become nil and the current
3113 ;; candidate will be added to the unread list.
3116 (gnus-agent-append-to-list tail-unread (car (pop known))))
3119 (defun gnus-agent-uncached-articles (articles group &optional cached-header)
3120 "Restrict ARTICLES to numbers already fetched.
3121 Returns a sublist of ARTICLES that excludes thos article ids in GROUP
3122 that have already been fetched.
3123 If CACHED-HEADER is nil, articles are only excluded if the article itself
3126 ;; Logically equivalent to: (gnus-sorted-difference articles (mapcar
3127 ;; 'car gnus-agent-article-alist))
3129 ;; Functionally, I don't need to construct a temp list using mapcar.
3131 (if (and (or gnus-agent-cache (not gnus-plugged))
3132 (gnus-agent-load-alist group))
3133 (let* ((ref gnus-agent-article-alist)
3135 (uncached (list nil))
3136 (tail-uncached uncached))
3137 (while (and ref arts)
3138 (let ((v1 (car arts))
3140 (cond ((< v1 v2) ; v1 does not appear in the reference list
3141 (gnus-agent-append-to-list tail-uncached v1)
3142 (setq arts (cdr arts)))
3144 (unless (or cached-header (cdar ref)) ; v1 is already cached
3145 (gnus-agent-append-to-list tail-uncached v1))
3146 (setq arts (cdr arts))
3147 (setq ref (cdr ref)))
3148 (t ; reference article (v2) preceeds the list being filtered
3149 (setq ref (cdr ref))))))
3151 (gnus-agent-append-to-list tail-uncached (pop arts)))
3153 ;; if gnus-agent-load-alist fails, no articles are cached.
3156 (defun gnus-agent-retrieve-headers (articles group &optional fetch-old)
3158 (gnus-agent-create-buffer)
3159 (let ((gnus-decode-encoded-word-function 'identity)
3160 (file (gnus-agent-article-name ".overview" group))
3161 cached-articles uncached-articles)
3162 (gnus-make-directory (nnheader-translate-file-chars
3163 (file-name-directory file) t))
3165 ;; Populate temp buffer with known headers
3166 (when (file-exists-p file)
3167 (with-current-buffer gnus-agent-overview-buffer
3169 (let ((nnheader-file-coding-system
3170 gnus-agent-file-coding-system))
3171 (nnheader-insert-nov-file file (car articles)))))
3173 (if (setq uncached-articles (gnus-agent-uncached-articles articles group
3176 ;; Populate nntp-server-buffer with uncached headers
3177 (set-buffer nntp-server-buffer)
3179 (cond ((not (eq 'nov (let (gnus-agent) ; Turn off agent
3180 (gnus-retrieve-headers
3181 uncached-articles group fetch-old))))
3182 (nnvirtual-convert-headers))
3183 ((eq 'nntp (car gnus-current-select-method))
3184 ;; The author of gnus-get-newsgroup-headers-xover
3185 ;; reports that the XOVER command is commonly
3186 ;; unreliable. The problem is that recently
3187 ;; posted articles may not be entered into the
3188 ;; NOV database in time to respond to my XOVER
3191 ;; I'm going to use his assumption that the NOV
3192 ;; database is updated in order of ascending
3193 ;; article ID. Therefore, a response containing
3194 ;; article ID N implies that all articles from 1
3195 ;; to N-1 are up-to-date. Therefore, missing
3196 ;; articles in that range have expired.
3198 (set-buffer nntp-server-buffer)
3199 (let* ((fetched-articles (list nil))
3200 (tail-fetched-articles fetched-articles)
3201 (min (cond ((numberp fetch-old)
3202 (max 1 (- (car articles) fetch-old)))
3207 (max (car (last articles))))
3209 ;; Get the list of articles that were fetched
3210 (goto-char (point-min))
3211 (let ((pm (point-max)))
3212 (while (< (point) pm)
3213 (when (looking-at "[0-9]+\t")
3214 (gnus-agent-append-to-list
3215 tail-fetched-articles
3216 (read (current-buffer))))
3219 ;; Clip this list to the headers that will
3220 ;; actually be returned
3221 (setq fetched-articles (gnus-list-range-intersection
3222 (cdr fetched-articles)
3225 ;; Clip the uncached articles list to exclude
3226 ;; IDs after the last FETCHED header. The
3227 ;; excluded IDs may be fetchable using HEAD.
3228 (if (car tail-fetched-articles)
3229 (setq uncached-articles
3230 (gnus-list-range-intersection
3232 (cons (car uncached-articles)
3233 (car tail-fetched-articles)))))
3235 ;; Create the list of articles that were
3236 ;; "successfully" fetched. Success, in this
3237 ;; case, means that the ID should not be
3238 ;; fetched again. In the case of an expired
3239 ;; article, the header will not be fetched.
3240 (setq uncached-articles
3241 (gnus-sorted-nunion fetched-articles
3245 ;; Erase the temp buffer
3246 (set-buffer gnus-agent-overview-buffer)
3249 ;; Copy the nntp-server-buffer to the temp buffer
3250 (set-buffer nntp-server-buffer)
3251 (copy-to-buffer gnus-agent-overview-buffer (point-min) (point-max))
3253 ;; Merge the temp buffer with the known headers (found on
3254 ;; disk in FILE) into the nntp-server-buffer
3255 (when (and uncached-articles (file-exists-p file))
3256 (gnus-agent-braid-nov group uncached-articles file))
3258 ;; Save the new set of known headers to FILE
3259 (set-buffer nntp-server-buffer)
3260 (let ((coding-system-for-write
3261 gnus-agent-file-coding-system))
3262 (gnus-agent-check-overview-buffer)
3263 (write-region (point-min) (point-max) file nil 'silent))
3265 ;; Update the group's article alist to include the newly
3266 ;; fetched articles.
3267 (gnus-agent-load-alist group)
3268 (gnus-agent-save-alist group uncached-articles nil)
3271 ;; Copy the temp buffer to the nntp-server-buffer
3272 (set-buffer nntp-server-buffer)
3274 (insert-buffer-substring gnus-agent-overview-buffer)))
3277 (not (numberp fetch-old)))
3278 t ; Don't remove anything.
3279 (nnheader-nov-delete-outside-range
3280 (if fetch-old (max 1 (- (car articles) fetch-old))
3282 (car (last articles)))
3287 (defun gnus-agent-request-article (article group)
3288 "Retrieve ARTICLE in GROUP from the agent cache."
3289 (when (and gnus-agent
3290 (or gnus-agent-cache
3293 (let* ((gnus-command-method (gnus-find-method-for-group group))
3294 (file (gnus-agent-article-name (number-to-string article) group))
3295 (buffer-read-only nil))
3296 (when (and (file-exists-p file)
3297 (> (nth 7 (file-attributes file)) 0))
3299 (gnus-kill-all-overlays)
3300 (let ((coding-system-for-read gnus-cache-coding-system))
3301 (insert-file-contents file))
3304 (defun gnus-agent-regenerate-group (group &optional reread)
3306 If REREAD is t, all articles in the .overview are marked as unread.
3307 If REREAD is not nil, downloaded articles are marked as unread."
3309 (list (let ((def (or (gnus-group-group-name)
3310 gnus-newsgroup-name)))
3311 (let ((select (read-string (if def
3312 (concat "Group Name ("
3315 (if (and (equal "" select)
3320 (while (let ((c (read-char-exclusive
3321 "Mark as unread: (n)one / (a)ll / all (d)ownloaded articles? (n)"
3323 (cond ((or (eq c ?\r) (eq c ?n) (eq c ?N))
3325 ((or (eq c ?a) (eq c ?A))
3327 ((or (eq c ?d) (eq c ?D))
3328 (throw 'mark 'some)))
3329 (message "Ignoring unexpected input")
3334 (gnus-message 5 "Regenerating in %s" group)
3335 (let* ((gnus-command-method (or gnus-command-method
3336 (gnus-find-method-for-group group)))
3337 (file (gnus-agent-article-name ".overview" group))
3338 (dir (file-name-directory file))
3340 (downloaded (if (file-exists-p dir)
3341 (sort (mapcar (lambda (name) (string-to-int name))
3342 (directory-files dir nil "^[0-9]+$" t))
3344 (progn (gnus-make-directory dir) nil)))
3349 (mm-with-unibyte-buffer
3350 (if (file-exists-p file)
3351 (let ((nnheader-file-coding-system
3352 gnus-agent-file-coding-system))
3353 (nnheader-insert-file-contents file)))
3354 (set-buffer-modified-p nil)
3356 ;; Load the article IDs found in the overview file. As a
3357 ;; side-effect, validate the file contents.
3361 (goto-char (point-min))
3362 (while (< (point) (point-max))
3363 (cond ((and (looking-at "[0-9]+\t")
3364 (<= (- (match-end 0) (match-beginning 0)) 9))
3365 (push (read (current-buffer)) nov-arts)
3367 (let ((l1 (car nov-arts))
3368 (l2 (cadr nov-arts)))
3372 (gnus-message 3 "gnus-agent-regenerate-group: NOV\
3373 entries are NOT in ascending order.")
3374 ;; Don't sort now as I haven't verified
3375 ;; that every line begins with a number
3379 (gnus-message 4 "gnus-agent-regenerate-group: NOV\
3380 entries contained duplicate of article %s. Duplicate deleted." l1)
3382 (setq nov-arts (cdr nov-arts))))))
3384 (gnus-message 1 "gnus-agent-regenerate-group: NOV\
3385 entries contained line that did not begin with an article number. Deleted\
3387 (gnus-delete-line))))
3390 (gnus-message 5 "gnus-agent-regenerate-group: Sorting NOV\
3391 entries into ascending order.")
3392 (sort-numeric-fields 1 (point-min) (point-max))
3393 (setq nov-arts nil)))))
3394 (gnus-agent-check-overview-buffer)
3396 ;; Construct a new article alist whose nodes match every header
3397 ;; in the .overview file. As a side-effect, missing headers are
3398 ;; reconstructed from the downloaded article file.
3399 (while (or downloaded nov-arts)
3400 (cond ((and downloaded
3402 (> (car downloaded) (car nov-arts))))
3403 ;; This entry is missing from the overview file
3404 (gnus-message 3 "Regenerating NOV %s %d..." group
3406 (let ((file (concat dir (number-to-string (car downloaded)))))
3407 (mm-with-unibyte-buffer
3408 (nnheader-insert-file-contents file)
3409 (nnheader-remove-body)
3410 (setq header (nnheader-parse-naked-head)))
3411 (mail-header-set-number header (car downloaded))
3413 (let ((key (concat "^" (int-to-string (car nov-arts))
3415 (or (re-search-backward key nil t)
3416 (re-search-forward key))
3418 (goto-char (point-min)))
3419 (nnheader-insert-nov header))
3420 (setq nov-arts (cons (car downloaded) nov-arts)))
3421 ((eq (car downloaded) (car nov-arts))
3422 ;; This entry in the overview has been downloaded
3423 (push (cons (car downloaded)
3425 (nth 5 (file-attributes
3426 (concat dir (number-to-string
3427 (car downloaded))))))) alist)
3428 (setq downloaded (cdr downloaded))
3429 (setq nov-arts (cdr nov-arts)))
3431 ;; This entry in the overview has not been downloaded
3432 (push (cons (car nov-arts) nil) alist)
3433 (setq nov-arts (cdr nov-arts)))))
3435 ;; When gnus-agent-consider-all-articles is set,
3436 ;; gnus-agent-regenerate-group should NOT remove article IDs from
3437 ;; the alist. Those IDs serve as markers to indicate that an
3438 ;; attempt has been made to fetch that article's header.
3440 ;; When gnus-agent-consider-all-articles is NOT set,
3441 ;; gnus-agent-regenerate-group can remove the article ID of every
3442 ;; article (with the exception of the last ID in the list - it's
3443 ;; special) that no longer appears in the overview. In this
3444 ;; situtation, the last article ID in the list implies that it,
3445 ;; and every article ID preceeding it, have been fetched from the
3448 (if gnus-agent-consider-all-articles
3449 ;; Restore all article IDs that were not found in the overview file.
3450 (let* ((n (cons nil alist))
3452 (o (gnus-agent-load-alist group)))
3454 (let ((nID (caadr n))
3457 (setq n (setcdr n (list (list oID))))
3460 (setcdr n (cons (list oID) (cdr n)))
3466 (setq n (cdr n))))))
3467 (setq alist (cdr merged)))
3468 ;; Restore the last article ID if it is not already in the new alist
3469 (let ((n (last alist))
3470 (o (last (gnus-agent-load-alist group))))
3474 (push (cons (caar o) nil) alist))
3475 ((< (caar n) (caar o))
3476 (setcdr n (list (car o)))))))
3478 (let ((inhibit-quit t))
3479 (if (setq regenerated (buffer-modified-p))
3480 (let ((coding-system-for-write gnus-agent-file-coding-system))
3481 (write-region (point-min) (point-max) file nil 'silent)))
3483 (setq regenerated (or regenerated
3484 (and reread gnus-agent-article-alist)
3485 (not (equal alist gnus-agent-article-alist))))
3487 (setq gnus-agent-article-alist alist)
3490 (gnus-agent-save-alist group)
3492 ;; I have to alter the group's active range NOW as
3493 ;; gnus-make-ascending-articles-unread will use it to
3494 ;; recalculate the number of unread articles in the group
3496 (let ((group (gnus-group-real-name group))
3497 (group-active (gnus-active group)))
3499 (let ((new-min (or (caar gnus-agent-article-alist)
3500 (car group-active)))
3501 (new-max (or (caar (last gnus-agent-article-alist))
3502 (cdr group-active))))
3504 (when (< new-min (car group-active))
3505 (setcar group-active new-min))
3507 (when (> new-max (cdr group-active))
3508 (setcdr group-active new-max))))))))
3510 (when (and reread gnus-agent-article-alist)
3511 (gnus-make-ascending-articles-unread
3513 (delq nil (mapcar (function (lambda (c)
3514 (cond ((eq reread t)
3518 gnus-agent-article-alist)))
3520 (when (gnus-buffer-live-p gnus-group-buffer)
3521 (gnus-group-update-group group t)
3524 (gnus-message 5 nil)
3528 (defun gnus-agent-regenerate (&optional clean reread)
3529 "Regenerate all agent covered files.
3530 If CLEAN, obsolete (ignore)."
3533 (gnus-message 4 "Regenerating Gnus agent files...")
3534 (dolist (gnus-command-method (gnus-agent-covered-methods))
3535 (dolist (group (gnus-groups-from-server gnus-command-method))
3536 (setq regenerated (or (gnus-agent-regenerate-group group reread)
3538 (gnus-message 4 "Regenerating Gnus agent files...done")
3542 (defun gnus-agent-go-online (&optional force)
3543 "Switch servers into online status."
3544 (interactive (list t))
3545 (dolist (server gnus-opened-servers)
3546 (when (eq (nth 1 server) 'offline)
3547 (if (if (eq force 'ask)
3549 (format "Switch %s:%s into online status? "
3550 (caar server) (cadar server)))
3552 (setcar (nthcdr 1 server) 'close)))))
3554 (defun gnus-agent-toggle-group-plugged (group)
3555 "Toggle the status of the server of the current group."
3556 (interactive (list (gnus-group-group-name)))
3557 (let* ((method (gnus-find-method-for-group group))
3558 (status (cadr (assoc method gnus-opened-servers))))
3559 (if (eq status 'offline)
3560 (gnus-server-set-status method 'closed)
3561 (gnus-close-server method)
3562 (gnus-server-set-status method 'offline))
3563 (message "Turn %s:%s from %s to %s." (car method) (cadr method)
3564 (if (eq status 'offline) 'offline 'online)
3565 (if (eq status 'offline) 'online 'offline))))
3567 (defun gnus-agent-group-covered-p (group)
3568 (gnus-agent-method-p (gnus-group-method group)))
3570 (add-hook 'gnus-group-prepare-hook
3574 (when (listp gnus-agent-expire-days)
3577 (gnus-message 1 "WARNING: gnus-agent-expire-days no longer\
3578 supports being set to a list.")(sleep-for 3)
3579 (gnus-message 1 "Change your configuration to set it to an\
3580 integer.")(sleep-for 3)
3581 (gnus-message 1 "I am now setting group parameters on each\
3582 group to match the configuration that the list offered.")
3585 (let ((groups (gnus-group-listed-groups)))
3587 (let* ((group (pop groups))
3588 (days gnus-agent-expire-days)
3591 (when (eq 0 (string-match
3594 (throw 'found (cadar days)))
3595 (setq days (cdr days)))
3598 (gnus-group-set-parameter group 'agent-days-until-old
3601 (let ((h gnus-group-prepare-hook))
3603 (let ((func (pop h)))
3604 (when (and (listp func)
3605 (eq (cadr (caddr func)) 'gnus-agent-do-once))
3606 (remove-hook 'gnus-group-prepare-hook func)
3609 (gnus-message 1 "I have finished setting group parameters on\
3610 each group. You may now customize your groups and/or topics to control the\
3613 (provide 'gnus-agent)
3615 ;;; gnus-agent.el ends here