1 ;;; gnus-agent.el --- unplugged support for Semi-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 ;; Tatsuya Ichikawa <t-ichi@po.shiojiri.ne.jp>
7 ;; This file is part of GNU Emacs.
9 ;; GNU Emacs is free software; you can redistribute it and/or modify
10 ;; it under the terms of the GNU General Public License as published by
11 ;; the Free Software Foundation; either version 2, or (at your option)
14 ;; GNU Emacs is distributed in the hope that it will be useful,
15 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
16 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 ;; GNU General Public License for more details.
19 ;; You should have received a copy of the GNU General Public License
20 ;; along with GNU Emacs; see the file COPYING. If not, write to the
21 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
22 ;; Boston, MA 02111-1307, USA.
28 (eval-when-compile (require 'cl))
29 (eval-when-compile (require 'gnus-clfns))
40 (if (featurep 'xemacs)
43 (require 'gnus-group))
46 (autoload 'gnus-server-update-server "gnus-srvr")
47 (autoload 'gnus-agent-customize-category "gnus-cus")
50 (defcustom gnus-agent-directory (nnheader-concat gnus-directory "agent/")
51 "Where the Gnus agent will store its files."
55 (defcustom gnus-agent-plugged-hook nil
56 "Hook run when plugging into the network."
60 (defcustom gnus-agent-unplugged-hook nil
61 "Hook run when unplugging from the network."
65 (defcustom gnus-agent-fetched-hook nil
66 "Hook run when finished fetching articles."
70 (defcustom gnus-agent-handle-level gnus-level-subscribed
71 "Groups on levels higher than this variable will be ignored by the Agent."
75 (defcustom gnus-agent-expire-days 7
76 "Read articles older than this will be expired.
77 If you wish to disable Agent expiring, see `gnus-agent-enable-expiration'."
79 :type '(number :tag "days"))
81 (defcustom gnus-agent-expire-all nil
82 "If non-nil, also expire unread, ticked and dormant articles.
83 If nil, only read articles will be expired."
87 (defcustom gnus-agent-group-mode-hook nil
88 "Hook run in Agent group minor modes."
92 ;; Extracted from gnus-xmas-redefine in order to preserve user settings
93 (when (featurep 'xemacs)
94 (add-hook 'gnus-agent-group-mode-hook 'gnus-xmas-agent-group-menu-add))
96 (defcustom gnus-agent-summary-mode-hook nil
97 "Hook run in Agent summary minor modes."
101 ;; Extracted from gnus-xmas-redefine in order to preserve user settings
102 (when (featurep 'xemacs)
103 (add-hook 'gnus-agent-summary-mode-hook 'gnus-xmas-agent-summary-menu-add))
105 (defcustom gnus-agent-server-mode-hook nil
106 "Hook run in Agent summary minor modes."
110 ;; Extracted from gnus-xmas-redefine in order to preserve user settings
111 (when (featurep 'xemacs)
112 (add-hook 'gnus-agent-server-mode-hook 'gnus-xmas-agent-server-menu-add))
114 (defcustom gnus-agent-confirmation-function 'y-or-n-p
115 "Function to confirm when error happens."
120 (defcustom gnus-agent-large-newsgroup nil
121 "*The number of articles which indicates a large newsgroup.
122 If the number of unread articles exceeds it, The number of articles to be
123 fetched will be limited to it. If not a positive integer, never consider it."
125 :type '(choice (const nil)
126 (integer :tag "Number")))
128 (defcustom gnus-agent-synchronize-flags 'ask
129 "Indicate if flags are synchronized when you plug in.
130 If this is `ask' the hook will query the user."
132 :type '(choice (const :tag "Always" t)
133 (const :tag "Never" nil)
134 (const :tag "Ask" ask))
137 (defcustom gnus-agent-go-online 'ask
138 "Indicate if offline servers go online when you plug in.
139 If this is `ask' the hook will query the user."
141 :type '(choice (const :tag "Always" t)
142 (const :tag "Never" nil)
143 (const :tag "Ask" ask))
146 (defcustom gnus-agent-mark-unread-after-downloaded t
147 "Indicate whether to mark articles unread after downloaded."
152 (defcustom gnus-agent-download-marks '(download)
153 "Marks for downloading."
155 :type '(repeat (symbol :tag "Mark"))
158 (defcustom gnus-agent-consider-all-articles nil
159 "When non-`nil', the agent will let the agent predicate decide
160 whether articles need to be downloaded or not, for all articles. When
161 `nil', the default, the agent will only let the predicate decide
162 whether unread articles are downloaded or not. If you enable this,
163 groups with large active ranges may open slower and you may also want
164 to look into the agent expiry settings to block the expiration of
165 read articles as they would just be downloaded again."
170 (defcustom gnus-agent-max-fetch-size 10000000 ;; 10 Mb
171 "Chunk size for `gnus-agent-fetch-session'.
172 The function will split its article fetches into chunks smaller than
177 (defcustom gnus-agent-enable-expiration 'ENABLE
178 "The default expiration state for each group.
179 When set to ENABLE, the default, `gnus-agent-expire' will expire old
180 contents from a group's local storage. This value may be overridden
181 to disable expiration in specific categories, topics, and groups. Of
182 course, you could change gnus-agent-enable-expiration to DISABLE then
183 enable expiration per categories, topics, and groups."
185 :type '(radio (const :format "Enable " ENABLE)
186 (const :format "Disable " DISABLE)))
188 (defcustom gnus-agent-expire-unagentized-dirs t
189 "*Whether expiration should expire in unagentized directories.
190 Have gnus-agent-expire scan the directories under
191 \(gnus-agent-directory) for groups that are no longer agentized.
192 When found, offer to remove them."
196 ;;; Internal variables
198 (defvar gnus-agent-history-buffers nil)
199 (defvar gnus-agent-buffer-alist nil)
200 (defvar gnus-agent-article-alist nil
201 "An assoc list identifying the articles whose headers have been fetched.
202 If successfully fetched, these headers will be stored in the group's overview
203 file. The key of each assoc pair is the article ID, the value of each assoc
204 pair is a flag indicating whether the identified article has been downloaded
205 \(gnus-agent-fetch-articles sets the value to the day of the download).
207 1) The last element of this list can not be expired as some
208 routines (for example, get-agent-fetch-headers) use the last
209 value to track which articles have had their headers retrieved.
210 2) The function `gnus-agent-regenerate' may destructively modify the value.")
211 (defvar gnus-agent-group-alist nil)
212 (defvar gnus-category-alist nil)
213 (defvar gnus-agent-current-history nil)
214 (defvar gnus-agent-overview-buffer nil)
215 (defvar gnus-category-predicate-cache nil)
216 (defvar gnus-category-group-cache nil)
217 (defvar gnus-agent-spam-hashtb nil)
218 (defvar gnus-agent-file-name nil)
219 (defvar gnus-agent-send-mail-function nil)
220 (defvar gnus-agent-file-coding-system 'raw-text)
221 (defvar gnus-agent-file-loading-cache nil)
222 (defvar gnus-agent-file-header-cache nil)
224 (defvar gnus-agent-auto-agentize-methods '(nntp nnimap)
225 "Initially, all servers from these methods are agentized.
226 The user may remove or add servers using the Server buffer. See Info
227 node `(gnus)Server Buffer'.")
230 (defvar gnus-headers)
237 (defun gnus-open-agent ()
239 (gnus-agent-read-servers)
241 (gnus-agent-create-buffer)
242 (add-hook 'gnus-group-mode-hook 'gnus-agent-mode)
243 (add-hook 'gnus-summary-mode-hook 'gnus-agent-mode)
244 (add-hook 'gnus-server-mode-hook 'gnus-agent-mode))
246 (defun gnus-agent-create-buffer ()
247 (if (gnus-buffer-live-p gnus-agent-overview-buffer)
249 (setq gnus-agent-overview-buffer
250 (gnus-get-buffer-create " *Gnus agent overview*"))
251 (with-current-buffer gnus-agent-overview-buffer
252 (set-buffer-multibyte t))
255 (gnus-add-shutdown 'gnus-close-agent 'gnus)
257 (defun gnus-close-agent ()
258 (setq gnus-category-predicate-cache nil
259 gnus-category-group-cache nil
260 gnus-agent-spam-hashtb nil)
261 (gnus-kill-buffer gnus-agent-overview-buffer))
264 ;;; Utility functions
267 (defun gnus-agent-read-file (file)
268 "Load FILE and do a `read' there."
271 (nnheader-insert-file-contents file)
272 (goto-char (point-min))
273 (read (current-buffer)))))
275 (defsubst gnus-agent-method ()
276 (concat (symbol-name (car gnus-command-method)) "/"
277 (if (equal (cadr gnus-command-method) "")
279 (cadr gnus-command-method))))
281 (defsubst gnus-agent-directory ()
282 "The name of the Gnus agent directory."
283 (nnheader-concat gnus-agent-directory
284 (nnheader-translate-file-chars (gnus-agent-method)) "/"))
286 (defun gnus-agent-lib-file (file)
287 "The full name of the Gnus agent library FILE."
288 (expand-file-name file
289 (file-name-as-directory
290 (expand-file-name "agent.lib" (gnus-agent-directory)))))
292 (defun gnus-agent-cat-set-property (category property value)
294 (setcdr (or (assq property category)
295 (let ((cell (cons property nil)))
296 (setcdr category (cons cell (cdr category)))
298 (let ((category category))
299 (while (cond ((eq property (caadr category))
300 (setcdr category (cddr category))
303 (setq category (cdr category)))))))
307 (defmacro gnus-agent-cat-defaccessor (name prop-name)
308 "Define accessor and setter methods for manipulating a list of the form
309 \(NAME (PROPERTY1 VALUE1) ... (PROPERTY_N VALUE_N)).
310 Given the call (gnus-agent-cat-defaccessor func PROPERTY1), the list may be
311 manipulated as follows:
312 (func LIST): Returns VALUE1
313 (setf (func LIST) NEW_VALUE1): Replaces VALUE1 with NEW_VALUE1."
314 `(progn (defmacro ,name (category)
315 (list (quote cdr) (list (quote assq)
316 (quote (quote ,prop-name)) category)))
318 (define-setf-method ,name (category)
319 (let* ((--category--temp-- (make-symbol "--category--"))
320 (--value--temp-- (make-symbol "--value--")))
321 (list (list --category--temp--) ; temporary-variables
322 (list category) ; value-forms
323 (list --value--temp--) ; store-variables
324 (let* ((category --category--temp--) ; store-form
325 (value --value--temp--))
326 (list (quote gnus-agent-cat-set-property)
328 (quote (quote ,prop-name))
330 (list (quote ,name) --category--temp--) ; access-form
334 (defmacro gnus-agent-cat-name (category)
337 (gnus-agent-cat-defaccessor
338 gnus-agent-cat-days-until-old agent-days-until-old)
339 (gnus-agent-cat-defaccessor
340 gnus-agent-cat-enable-expiration agent-enable-expiration)
341 (gnus-agent-cat-defaccessor
342 gnus-agent-cat-groups agent-groups)
343 (gnus-agent-cat-defaccessor
344 gnus-agent-cat-high-score agent-high-score)
345 (gnus-agent-cat-defaccessor
346 gnus-agent-cat-length-when-long agent-length-when-long)
347 (gnus-agent-cat-defaccessor
348 gnus-agent-cat-length-when-short agent-length-when-short)
349 (gnus-agent-cat-defaccessor
350 gnus-agent-cat-low-score agent-low-score)
351 (gnus-agent-cat-defaccessor
352 gnus-agent-cat-predicate agent-predicate)
353 (gnus-agent-cat-defaccessor
354 gnus-agent-cat-score-file agent-score-file)
355 (gnus-agent-cat-defaccessor
356 gnus-agent-cat-disable-undownloaded-faces agent-disable-undownloaded-faces)
359 (defsetf gnus-agent-cat-groups (category) (groups)
360 (list 'gnus-agent-set-cat-groups category groups)))
362 (defun gnus-agent-set-cat-groups (category groups)
363 (unless (eq groups 'ignore)
365 (old-g (gnus-agent-cat-groups category)))
366 (cond ((eq new-g old-g)
367 ;; gnus-agent-add-group is fiddling with the group
368 ;; list. Still, Im done.
371 ((eq new-g (cdr old-g))
372 ;; gnus-agent-add-group is fiddling with the group list
373 (setcdr (or (assq 'agent-groups category)
374 (let ((cell (cons 'agent-groups nil)))
375 (setcdr category (cons cell (cdr category)))
378 (let ((groups groups))
380 (let* ((group (pop groups))
381 (old-category (gnus-group-category group)))
382 (if (eq category old-category)
384 (setf (gnus-agent-cat-groups old-category)
385 (delete group (gnus-agent-cat-groups
387 ;; Purge cache as preceeding loop invalidated it.
388 (setq gnus-category-group-cache nil))
390 (setcdr (or (assq 'agent-groups category)
391 (let ((cell (cons 'agent-groups nil)))
392 (setcdr category (cons cell (cdr category)))
395 (defsubst gnus-agent-cat-make (name &optional default-agent-predicate)
396 (list name `(agent-predicate . ,(or default-agent-predicate 'false))))
398 ;;; Fetching setup functions.
400 (defun gnus-agent-start-fetch ()
401 "Initialize data structures for efficient fetching."
402 (gnus-agent-create-buffer))
404 (defun gnus-agent-stop-fetch ()
405 "Save all data structures and clean up."
406 (setq gnus-agent-spam-hashtb nil)
408 (set-buffer nntp-server-buffer)
411 (defmacro gnus-agent-with-fetch (&rest forms)
414 (let ((gnus-agent-fetching t))
415 (gnus-agent-start-fetch)
417 (gnus-agent-stop-fetch)))
419 (put 'gnus-agent-with-fetch 'lisp-indent-function 0)
420 (put 'gnus-agent-with-fetch 'edebug-form-spec '(body))
422 (defmacro gnus-agent-append-to-list (tail value)
423 `(setq ,tail (setcdr ,tail (cons ,value nil))))
425 (defmacro gnus-agent-message (level &rest args)
426 `(if (<= ,level gnus-verbose)
433 (defvar gnus-agent-mode-hook nil
434 "Hook run when installing agent mode.")
436 (defvar gnus-agent-mode nil)
437 (defvar gnus-agent-mode-status '(gnus-agent-mode " Plugged"))
439 (defun gnus-agent-mode ()
440 "Minor mode for providing a agent support in Gnus buffers."
441 (let* ((buffer (progn (string-match "^gnus-\\(.*\\)-mode$"
442 (symbol-name major-mode))
443 (match-string 1 (symbol-name major-mode))))
444 (mode (intern (format "gnus-agent-%s-mode" buffer))))
445 (set (make-local-variable 'gnus-agent-mode) t)
447 (set (make-local-variable mode) t)
449 (when (gnus-visual-p 'agent-menu 'menu)
450 (funcall (intern (format "gnus-agent-%s-make-menu-bar" buffer))))
451 (unless (assq 'gnus-agent-mode minor-mode-alist)
452 (push gnus-agent-mode-status minor-mode-alist))
453 (unless (assq mode minor-mode-map-alist)
454 (push (cons mode (symbol-value (intern (format "gnus-agent-%s-mode-map"
456 minor-mode-map-alist))
457 (when (eq major-mode 'gnus-group-mode)
458 (let ((init-plugged gnus-plugged)
459 (gnus-agent-go-online nil))
460 ;; g-a-t-p does nothing when gnus-plugged isn't changed.
461 ;; Therefore, make certain that the current value does not
462 ;; match the desired initial value.
463 (setq gnus-plugged :unknown)
464 (gnus-agent-toggle-plugged init-plugged)))
465 (gnus-run-hooks 'gnus-agent-mode-hook
466 (intern (format "gnus-agent-%s-mode-hook" buffer)))))
468 (defvar gnus-agent-group-mode-map (make-sparse-keymap))
469 (gnus-define-keys gnus-agent-group-mode-map
470 "Ju" gnus-agent-fetch-groups
471 "Jc" gnus-enter-category-buffer
472 "Jj" gnus-agent-toggle-plugged
473 "Js" gnus-agent-fetch-session
474 "JY" gnus-agent-synchronize-flags
475 "JS" gnus-group-send-queue
476 "Ja" gnus-agent-add-group
477 "Jr" gnus-agent-remove-group
478 "Jo" gnus-agent-toggle-group-plugged)
480 (defun gnus-agent-group-make-menu-bar ()
481 (unless (boundp 'gnus-agent-group-menu)
483 gnus-agent-group-menu gnus-agent-group-mode-map ""
485 ["Toggle plugged" gnus-agent-toggle-plugged t]
486 ["Toggle group plugged" gnus-agent-toggle-group-plugged t]
487 ["List categories" gnus-enter-category-buffer t]
488 ["Add (current) group to category" gnus-agent-add-group t]
489 ["Remove (current) group from category" gnus-agent-remove-group t]
490 ["Send queue" gnus-group-send-queue gnus-plugged]
492 ["All" gnus-agent-fetch-session gnus-plugged]
493 ["Group" gnus-agent-fetch-group gnus-plugged])
494 ["Synchronize flags" gnus-agent-synchronize-flags t]
497 (defvar gnus-agent-summary-mode-map (make-sparse-keymap))
498 (gnus-define-keys gnus-agent-summary-mode-map
499 "Jj" gnus-agent-toggle-plugged
500 "Ju" gnus-agent-summary-fetch-group
501 "JS" gnus-agent-fetch-group
502 "Js" gnus-agent-summary-fetch-series
503 "J#" gnus-agent-mark-article
504 "J\M-#" gnus-agent-unmark-article
505 "@" gnus-agent-toggle-mark
506 "Jc" gnus-agent-catchup)
508 (defun gnus-agent-summary-make-menu-bar ()
509 (unless (boundp 'gnus-agent-summary-menu)
511 gnus-agent-summary-menu gnus-agent-summary-mode-map ""
513 ["Toggle plugged" gnus-agent-toggle-plugged t]
514 ["Mark as downloadable" gnus-agent-mark-article t]
515 ["Unmark as downloadable" gnus-agent-unmark-article t]
516 ["Toggle mark" gnus-agent-toggle-mark t]
517 ["Fetch downloadable" gnus-agent-summary-fetch-group t]
518 ["Catchup undownloaded" gnus-agent-catchup t]))))
520 (defvar gnus-agent-server-mode-map (make-sparse-keymap))
521 (gnus-define-keys gnus-agent-server-mode-map
522 "Jj" gnus-agent-toggle-plugged
523 "Ja" gnus-agent-add-server
524 "Jr" gnus-agent-remove-server)
526 (defun gnus-agent-server-make-menu-bar ()
527 (unless (boundp 'gnus-agent-server-menu)
529 gnus-agent-server-menu gnus-agent-server-mode-map ""
531 ["Toggle plugged" gnus-agent-toggle-plugged t]
532 ["Add" gnus-agent-add-server t]
533 ["Remove" gnus-agent-remove-server t]))))
535 (defun gnus-agent-make-mode-line-string (string mouse-button mouse-func)
536 (if (and (fboundp 'propertize)
537 (fboundp 'make-mode-line-mouse-map))
538 (propertize string 'local-map
539 (make-mode-line-mouse-map mouse-button mouse-func))
542 (defun gnus-agent-toggle-plugged (set-to)
543 "Toggle whether Gnus is unplugged or not."
544 (interactive (list (not gnus-plugged)))
545 (cond ((eq set-to gnus-plugged)
548 (setq gnus-plugged set-to)
549 (gnus-run-hooks 'gnus-agent-plugged-hook)
550 (setcar (cdr gnus-agent-mode-status)
551 (gnus-agent-make-mode-line-string " Plugged"
553 'gnus-agent-toggle-plugged))
554 (gnus-agent-go-online gnus-agent-go-online)
555 (gnus-agent-possibly-synchronize-flags))
557 (gnus-agent-close-connections)
558 (setq gnus-plugged set-to)
559 (gnus-run-hooks 'gnus-agent-unplugged-hook)
560 (setcar (cdr gnus-agent-mode-status)
561 (gnus-agent-make-mode-line-string " Unplugged"
563 'gnus-agent-toggle-plugged))))
564 (force-mode-line-update)
565 (set-buffer-modified-p t))
567 (defmacro gnus-agent-while-plugged (&rest body)
568 `(let ((original-gnus-plugged gnus-plugged))
570 (progn (gnus-agent-toggle-plugged t)
572 (gnus-agent-toggle-plugged original-gnus-plugged))))
574 (put 'gnus-agent-while-plugged 'lisp-indent-function 0)
575 (put 'gnus-agent-while-plugged 'edebug-form-spec '(body))
577 (defun gnus-agent-close-connections ()
578 "Close all methods covered by the Gnus agent."
579 (let ((methods (gnus-agent-covered-methods)))
581 (gnus-close-server (pop methods)))))
584 (defun gnus-unplugged ()
585 "Start Gnus unplugged."
587 (setq gnus-plugged nil)
591 (defun gnus-plugged ()
592 "Start Gnus plugged."
594 (setq gnus-plugged t)
598 (defun gnus-slave-unplugged (&optional arg)
599 "Read news as a slave unplugged."
601 (setq gnus-plugged nil)
602 (gnus arg nil 'slave))
605 (defun gnus-agentize ()
606 "Allow Gnus to be an offline newsreader.
608 The gnus-agentize function is now called internally by gnus when
609 gnus-agent is set. If you wish to avoid calling gnus-agentize,
610 customize gnus-agent to nil.
612 This will modify the `gnus-setup-news-hook', and
613 `message-send-mail-real-function' variables, and install the Gnus agent
614 minor mode in all Gnus buffers."
617 (add-hook 'gnus-setup-news-hook 'gnus-agent-queue-setup)
618 (unless gnus-agent-send-mail-function
619 (setq gnus-agent-send-mail-function
620 (or message-send-mail-real-function
621 message-send-mail-function)
622 message-send-mail-real-function 'gnus-agent-send-mail))
624 (unless gnus-agent-covered-methods
626 (lambda (server-or-method)
627 (let ((method (gnus-server-to-method server-or-method)))
628 (when (memq (car method)
629 gnus-agent-auto-agentize-methods)
630 (push (gnus-method-to-server method)
631 gnus-agent-covered-methods)
632 (setq gnus-agent-method-p-cache nil))))
633 (cons gnus-select-method gnus-secondary-select-methods))))
635 (defun gnus-agent-queue-setup (&optional group-name)
636 "Make sure the queue group exists.
637 Optional arg GROUP-NAME allows to specify another group."
638 (unless (gnus-gethash (format "nndraft:%s" (or group-name "queue"))
640 (gnus-request-create-group (or group-name "queue") '(nndraft ""))
641 (let ((gnus-level-default-subscribed 1))
642 (gnus-subscribe-group (format "nndraft:%s" (or group-name "queue"))
644 (gnus-group-set-parameter
645 (format "nndraft:%s" (or group-name "queue"))
646 'gnus-dummy '((gnus-draft-mode)))))
648 (defun gnus-agent-send-mail ()
650 (funcall gnus-agent-send-mail-function)
651 (goto-char (point-min))
653 (concat "^" (regexp-quote mail-header-separator) "\n"))
655 (gnus-agent-insert-meta-information 'mail)
656 (gnus-request-accept-article "nndraft:queue" nil t t)))
658 (defun gnus-agent-insert-meta-information (type &optional method)
659 "Insert meta-information into the message that says how it's to be posted.
660 TYPE can be either `mail' or `news'. If the latter, then METHOD can
663 (message-remove-header gnus-agent-meta-information-header)
664 (goto-char (point-min))
665 (insert gnus-agent-meta-information-header ": "
666 (symbol-name type) " " (format "%S" method)
669 (while (search-backward "\n" nil t)
670 (replace-match "\\n" t t))))
672 (defun gnus-agent-restore-gcc ()
673 "Restore GCC field from saved header."
675 (goto-char (point-min))
676 (while (re-search-forward (concat gnus-agent-gcc-header ":") nil t)
677 (replace-match "Gcc:" 'fixedcase))))
679 (defun gnus-agent-any-covered-gcc ()
681 (message-narrow-to-headers)
682 (let* ((gcc (mail-fetch-field "gcc" nil t))
684 (mapcar 'gnus-inews-group-method
685 (message-unquote-tokens
686 (message-tokenize-header
689 (while (and (not covered) methods)
690 (setq covered (gnus-agent-method-p (car methods))
691 methods (cdr methods)))
695 (defun gnus-agent-possibly-save-gcc ()
696 "Save GCC if Gnus is unplugged."
697 (when (and (not gnus-plugged) (gnus-agent-any-covered-gcc))
699 (goto-char (point-min))
700 (let ((case-fold-search t))
701 (while (re-search-forward "^gcc:" nil t)
702 (replace-match (concat gnus-agent-gcc-header ":") 'fixedcase))))))
704 (defun gnus-agent-possibly-do-gcc ()
705 "Do GCC if Gnus is plugged."
706 (when (or gnus-plugged (not (gnus-agent-any-covered-gcc)))
707 (gnus-inews-do-gcc)))
710 ;;; Group mode commands
713 (defun gnus-agent-fetch-groups (n)
714 "Put all new articles in the current groups into the Agent."
717 (error "Groups can't be fetched when Gnus is unplugged"))
718 (gnus-group-iterate n 'gnus-agent-fetch-group))
720 (defun gnus-agent-fetch-group (&optional group)
721 "Put all new articles in GROUP into the Agent."
722 (interactive (list (gnus-group-group-name)))
723 (setq group (or group gnus-newsgroup-name))
725 (error "No group on the current line"))
727 (gnus-agent-while-plugged
728 (let ((gnus-command-method (gnus-find-method-for-group group)))
729 (gnus-agent-with-fetch
730 (gnus-agent-fetch-group-1 group gnus-command-method)
731 (gnus-message 5 "Fetching %s...done" group)))))
733 (defun gnus-agent-add-group (category arg)
734 "Add the current group to an agent category."
740 (mapcar (lambda (cat) (list (symbol-name (car cat))))
744 (let ((cat (assq category gnus-category-alist))
746 (gnus-group-iterate arg
748 (when (gnus-agent-cat-groups (setq c (gnus-group-category group)))
749 (setf (gnus-agent-cat-groups c)
750 (delete group (gnus-agent-cat-groups c))))
751 (push group groups)))
752 (setf (gnus-agent-cat-groups cat)
753 (nconc (gnus-agent-cat-groups cat) groups))
754 (gnus-category-write)))
756 (defun gnus-agent-remove-group (arg)
757 "Remove the current group from its agent category, if any."
760 (gnus-group-iterate arg
762 (when (gnus-agent-cat-groups (setq c (gnus-group-category group)))
763 (setf (gnus-agent-cat-groups c)
764 (delete group (gnus-agent-cat-groups c))))))
765 (gnus-category-write)))
767 (defun gnus-agent-synchronize-flags ()
768 "Synchronize unplugged flags with servers."
771 (dolist (gnus-command-method (gnus-agent-covered-methods))
772 (when (file-exists-p (gnus-agent-lib-file "flags"))
773 (gnus-agent-synchronize-flags-server gnus-command-method)))))
775 (defun gnus-agent-possibly-synchronize-flags ()
776 "Synchronize flags according to `gnus-agent-synchronize-flags'."
779 (dolist (gnus-command-method (gnus-agent-covered-methods))
780 (when (file-exists-p (gnus-agent-lib-file "flags"))
781 (gnus-agent-possibly-synchronize-flags-server gnus-command-method)))))
783 (defun gnus-agent-synchronize-flags-server (method)
784 "Synchronize flags set when unplugged for server."
785 (let ((gnus-command-method method))
786 (when (file-exists-p (gnus-agent-lib-file "flags"))
787 (set-buffer (get-buffer-create " *Gnus Agent flag synchronize*"))
789 (nnheader-insert-file-contents (gnus-agent-lib-file "flags"))
790 (if (null (gnus-check-server gnus-command-method))
791 (gnus-message 1 "Couldn't open server %s" (nth 1 gnus-command-method))
793 (if (null (eval (read (current-buffer))))
795 (write-file (gnus-agent-lib-file "flags"))
796 (error "Couldn't set flags from file %s"
797 (gnus-agent-lib-file "flags"))))
798 (delete-file (gnus-agent-lib-file "flags")))
801 (defun gnus-agent-possibly-synchronize-flags-server (method)
802 "Synchronize flags for server according to `gnus-agent-synchronize-flags'."
803 (when (or (and gnus-agent-synchronize-flags
804 (not (eq gnus-agent-synchronize-flags 'ask)))
805 (and (eq gnus-agent-synchronize-flags 'ask)
806 (gnus-y-or-n-p (format "Synchronize flags on server `%s'? "
808 (gnus-agent-synchronize-flags-server method)))
811 ;;; Server mode commands
814 (defun gnus-agent-add-server ()
815 "Enroll SERVER in the agent program."
817 (let* ((server (gnus-server-server-name))
818 (named-server (gnus-server-named-server))
820 (gnus-server-get-method nil server))))
822 (error "No server on the current line"))
824 (when (gnus-agent-method-p method)
825 (error "Server already in the agent program"))
827 (push named-server gnus-agent-covered-methods)
829 (setq gnus-agent-method-p-cache nil)
830 (gnus-server-update-server server)
831 (gnus-agent-write-servers)
832 (gnus-message 1 "Entered %s into the Agent" server)))
834 (defun gnus-agent-remove-server ()
835 "Remove SERVER from the agent program."
837 (let* ((server (gnus-server-server-name))
838 (named-server (gnus-server-named-server)))
840 (error "No server on the current line"))
842 (unless (member named-server gnus-agent-covered-methods)
843 (error "Server not in the agent program"))
845 (setq gnus-agent-covered-methods
846 (delete named-server gnus-agent-covered-methods)
847 gnus-agent-method-p-cache nil)
849 (gnus-server-update-server server)
850 (gnus-agent-write-servers)
851 (gnus-message 1 "Removed %s from the agent" server)))
853 (defun gnus-agent-read-servers ()
854 "Read the alist of covered servers."
855 (setq gnus-agent-covered-methods
856 (gnus-agent-read-file
857 (nnheader-concat gnus-agent-directory "lib/servers"))
858 gnus-agent-method-p-cache nil)
860 ;; I am called so early in start-up that I can not validate server
861 ;; names. When that is the case, I skip the validation. That is
862 ;; alright as the gnus startup code calls the validate methods
864 (if gnus-server-alist
865 (gnus-agent-read-servers-validate)))
867 (defun gnus-agent-read-servers-validate ()
868 (mapcar (lambda (server-or-method)
869 (let* ((server (if (stringp server-or-method)
871 (gnus-method-to-server server-or-method)))
872 (method (gnus-server-to-method server)))
874 (unless (member server gnus-agent-covered-methods)
875 (push server gnus-agent-covered-methods)
876 (setq gnus-agent-method-p-cache nil))
877 (gnus-message 1 "Ignoring disappeared server `%s'" server))))
878 (prog1 gnus-agent-covered-methods
879 (setq gnus-agent-covered-methods nil))))
881 (defun gnus-agent-read-servers-validate-native (native-method)
882 (setq gnus-agent-covered-methods
883 (mapcar (lambda (method)
885 (equal method native-method))
887 method)) gnus-agent-covered-methods)))
889 (defun gnus-agent-write-servers ()
890 "Write the alist of covered servers."
891 (gnus-make-directory (nnheader-concat gnus-agent-directory "lib"))
892 (let ((coding-system-for-write nnheader-file-coding-system)
893 (output-coding-system nnheader-file-coding-system)
894 (file-name-coding-system nnmail-pathname-coding-system)
895 (pathname-coding-system nnmail-pathname-coding-system))
896 (with-temp-file (nnheader-concat gnus-agent-directory "lib/servers")
897 (prin1 gnus-agent-covered-methods
904 (defun gnus-agent-mark-article (n &optional unmark)
905 "Mark the next N articles as downloadable.
906 If N is negative, mark backward instead. If UNMARK is non-nil, remove
907 the mark instead. The difference between N and the actual number of
908 articles marked is returned."
910 (let ((backward (< n 0))
915 (gnus-summary-set-agent-mark
916 (gnus-summary-article-number) unmark)
917 (zerop (gnus-summary-next-subject (if backward -1 1) nil t))))
920 (gnus-message 7 "No more articles"))
921 (gnus-summary-recenter)
922 (gnus-summary-position-point)
925 (defun gnus-agent-unmark-article (n)
926 "Remove the downloadable mark from the next N articles.
927 If N is negative, unmark backward instead. The difference between N and
928 the actual number of articles unmarked is returned."
930 (gnus-agent-mark-article n t))
932 (defun gnus-agent-toggle-mark (n)
933 "Toggle the downloadable mark from the next N articles.
934 If N is negative, toggle backward instead. The difference between N and
935 the actual number of articles toggled is returned."
937 (gnus-agent-mark-article n 'toggle))
939 (defun gnus-summary-set-agent-mark (article &optional unmark)
940 "Mark ARTICLE as downloadable. If UNMARK is nil, article is marked.
941 When UNMARK is t, the article is unmarked. For any other value, the
942 article's mark is toggled."
943 (let ((unmark (cond ((eq nil unmark)
948 (memq article gnus-newsgroup-downloadable)))))
949 (when (gnus-summary-goto-subject article nil t)
950 (gnus-summary-update-mark
953 (setq gnus-newsgroup-downloadable
954 (delq article gnus-newsgroup-downloadable))
955 (gnus-article-mark article))
957 (setq gnus-newsgroup-downloadable
958 (gnus-add-to-sorted-list gnus-newsgroup-downloadable article))
959 gnus-downloadable-mark)
963 (defun gnus-agent-get-undownloaded-list ()
964 "Construct list of articles that have not been downloaded."
965 (let ((gnus-command-method (gnus-find-method-for-group gnus-newsgroup-name)))
966 (when (set (make-local-variable 'gnus-newsgroup-agentized)
967 (gnus-agent-method-p gnus-command-method))
968 (let* ((alist (gnus-agent-load-alist gnus-newsgroup-name))
969 (headers (sort (mapcar (lambda (h)
970 (mail-header-number h))
971 gnus-newsgroup-headers) '<))
972 (cached (and gnus-use-cache gnus-newsgroup-cached))
973 (undownloaded (list nil))
974 (tail-undownloaded undownloaded)
975 (unfetched (list nil))
976 (tail-unfetched unfetched))
977 (while (and alist headers)
978 (let ((a (caar alist))
981 ;; Ignore IDs in the alist that are not being
982 ;; displayed in the summary.
983 (setq alist (cdr alist)))
985 ;; Headers that are not in the alist should be
986 ;; fictious (see nnagent-retrieve-headers); they
987 ;; imply that this article isn't in the agent.
988 (gnus-agent-append-to-list tail-undownloaded h)
989 (gnus-agent-append-to-list tail-unfetched h)
990 (setq headers (cdr headers)))
992 (setq alist (cdr alist))
993 (setq headers (cdr headers))
994 nil ; ignore already downloaded
997 (setq alist (cdr alist))
998 (setq headers (cdr headers))
1000 ;; This article isn't in the agent. Check to see
1001 ;; if it is in the cache. If it is, it's been
1003 (while (and cached (< (car cached) a))
1004 (setq cached (cdr cached)))
1005 (unless (equal a (car cached))
1006 (gnus-agent-append-to-list tail-undownloaded a))))))
1009 (let ((num (pop headers)))
1010 (gnus-agent-append-to-list tail-undownloaded num)
1011 (gnus-agent-append-to-list tail-unfetched num)))
1013 (setq gnus-newsgroup-undownloaded (cdr undownloaded)
1014 gnus-newsgroup-unfetched (cdr unfetched))))))
1016 (defun gnus-agent-catchup ()
1017 "Mark as read all unhandled articles.
1018 An article is unhandled if it is neither cached, nor downloaded, nor
1022 (let ((articles gnus-newsgroup-undownloaded))
1023 (when (or gnus-newsgroup-downloadable
1024 gnus-newsgroup-cached)
1025 (setq articles (gnus-sorted-ndifference
1026 (gnus-sorted-ndifference
1027 (gnus-copy-sequence articles)
1028 gnus-newsgroup-downloadable)
1029 gnus-newsgroup-cached)))
1032 (gnus-summary-mark-article
1033 (pop articles) gnus-catchup-mark)))
1034 (gnus-summary-position-point)))
1036 (defun gnus-agent-summary-fetch-series ()
1038 (when gnus-newsgroup-processable
1039 (setq gnus-newsgroup-downloadable
1040 (let* ((dl gnus-newsgroup-downloadable)
1041 (gnus-newsgroup-downloadable
1042 (sort (gnus-copy-sequence gnus-newsgroup-processable) '<))
1043 (fetched-articles (gnus-agent-summary-fetch-group)))
1044 ;; The preceeding call to (gnus-agent-summary-fetch-group)
1045 ;; updated gnus-newsgroup-downloadable to remove each
1046 ;; article successfully fetched.
1048 ;; For each article that I processed, remove its
1049 ;; processable mark IF the article is no longer
1050 ;; downloadable (i.e. it's already downloaded)
1051 (dolist (article gnus-newsgroup-processable)
1052 (unless (memq article gnus-newsgroup-downloadable)
1053 (gnus-summary-remove-process-mark article)))
1054 (gnus-sorted-ndifference dl fetched-articles)))))
1056 (defun gnus-agent-summary-fetch-group (&optional all)
1057 "Fetch the downloadable articles in the group.
1058 Optional arg ALL, if non-nil, means to fetch all articles."
1061 (if all gnus-newsgroup-articles
1062 gnus-newsgroup-downloadable))
1063 (gnus-command-method (gnus-find-method-for-group gnus-newsgroup-name))
1065 (gnus-agent-while-plugged
1067 (error "No articles to download"))
1068 (gnus-agent-with-fetch
1069 (setq gnus-newsgroup-undownloaded
1070 (gnus-sorted-ndifference
1071 gnus-newsgroup-undownloaded
1072 (setq fetched-articles
1073 (gnus-agent-fetch-articles
1074 gnus-newsgroup-name articles)))))
1076 (dolist (article articles)
1077 (let ((was-marked-downloadable
1078 (memq article gnus-newsgroup-downloadable)))
1079 (cond (gnus-agent-mark-unread-after-downloaded
1080 (setq gnus-newsgroup-downloadable
1081 (delq article gnus-newsgroup-downloadable))
1083 ;; The downloadable mark is implemented as a
1084 ;; type of read mark. Therefore, marking the
1085 ;; article as unread is sufficient to clear
1086 ;; its downloadable flag.
1087 (gnus-summary-mark-article article gnus-unread-mark))
1088 (was-marked-downloadable
1089 (gnus-summary-set-agent-mark article t)))
1090 (when (gnus-summary-goto-subject article nil t)
1091 (gnus-summary-update-download-mark article))))))
1094 (defun gnus-agent-fetch-selected-article ()
1095 "Fetch the current article as it is selected.
1096 This can be added to `gnus-select-article-hook' or
1097 `gnus-mark-article-hook'."
1098 (let ((gnus-command-method gnus-current-select-method))
1099 (when (and gnus-plugged (gnus-agent-method-p gnus-command-method))
1100 (when (gnus-agent-fetch-articles
1102 (list gnus-current-article))
1103 (setq gnus-newsgroup-undownloaded
1104 (delq gnus-current-article gnus-newsgroup-undownloaded))
1105 (gnus-summary-update-download-mark gnus-current-article)))))
1108 ;;; Internal functions
1112 ;;; The agent's active range is defined as follows:
1113 ;;; If the agent has no record of the group, use the actual active
1115 ;;; If the agent has a record, set the agent's active range to
1116 ;;; include the max limit of the actual active range.
1117 ;;; When expiring, update the min limit to match the smallest of the
1118 ;;; min article not expired or the min actual active range.
1120 (defun gnus-agent-save-active (method)
1121 (gnus-agent-save-active-1 method 'gnus-active-to-gnus-format))
1123 (defun gnus-agent-save-active-1 (method function)
1124 (when (gnus-agent-method-p method)
1125 (let* ((gnus-command-method method)
1126 (new (gnus-make-hashtable (count-lines (point-min) (point-max))))
1127 (file (gnus-agent-lib-file "active")))
1128 (funcall function nil new)
1129 (gnus-agent-write-active file new)
1131 (nnheader-insert-file-contents file))))
1133 (defun gnus-agent-write-active (file new &optional literal-replacement)
1135 (when (and (not literal-replacement)
1136 (file-exists-p file))
1137 (setq old (gnus-make-hashtable (count-lines (point-min) (point-max))))
1139 (nnheader-insert-file-contents file)
1140 (gnus-active-to-gnus-format nil old))
1141 ;; Iterate over the current active groups, the current active
1142 ;; range may expand, but NOT CONTRACT, the agent's active range.
1145 (let ((new-active (and nsym (boundp nsym) (symbol-value nsym))))
1147 (let* ((osym (intern (symbol-name nsym) old))
1148 (old-active (and (boundp osym) (symbol-value osym))))
1150 (let ((new-min (car new-active))
1151 (old-min (car old-active))
1152 (new-max (cdr new-active))
1153 (old-max (cdr old-active)))
1154 (if (and (integerp new-min)
1155 (< new-min old-min))
1156 (setcar old-active new-min))
1157 (if (and (integerp new-max)
1158 (> new-max old-max))
1159 (setcdr old-active new-max)))
1160 (set osym new-active))))))
1162 (gnus-make-directory (file-name-directory file))
1163 (let ((nnmail-active-file-coding-system gnus-agent-file-coding-system))
1164 ;; The hashtable contains real names of groups. However, do NOT
1165 ;; add the foreign server prefix as gnus-active-to-gnus-format
1166 ;; will add it while reading the file.
1167 (gnus-write-active-file file old nil))))
1169 (defun gnus-agent-possibly-alter-active (group active)
1170 "Possibly expand a group's active range to include articles
1171 downloaded into the agent."
1173 ;; I can't use the agent's active file here as there is no practical
1174 ;; mechanism to update the active ranges in that file as the oldest
1175 ;; articles are removed from the agent.
1176 (let* ((gnus-command-method (or gnus-command-method
1177 (gnus-find-method-for-group group)))
1178 (alist (gnus-agent-load-alist group)))
1180 (let ((new-min (or (caar gnus-agent-article-alist)
1182 (new-max (or (caar (last gnus-agent-article-alist))
1185 (when (< new-min (car active))
1186 (setcar active new-min))
1187 (when (> new-max (cdr active))
1188 (setcdr active new-max)))))
1190 (defun gnus-agent-save-groups (method)
1191 (gnus-agent-save-active-1 method 'gnus-groups-to-gnus-format))
1193 (defun gnus-agent-save-group-info (method group active)
1194 (when (gnus-agent-method-p method)
1195 (let* ((gnus-command-method method)
1196 (coding-system-for-write nnheader-file-coding-system)
1197 (output-coding-system nnheader-file-coding-system)
1198 (file-name-coding-system nnmail-pathname-coding-system)
1199 (pathname-coding-system nnmail-pathname-coding-system)
1200 (file (gnus-agent-lib-file "active"))
1201 oactive-min oactive-max)
1202 (gnus-make-directory (file-name-directory file))
1203 (with-temp-file file
1204 ;; Emacs got problem to match non-ASCII group in multibyte buffer.
1205 (set-buffer-multibyte nil)
1206 (when (file-exists-p file)
1207 (nnheader-insert-file-contents file)
1209 (goto-char (point-min))
1210 (when (re-search-forward
1211 (concat "^" (regexp-quote group) " ") nil t)
1213 (setq oactive-max (read (current-buffer)) ;; max
1214 oactive-min (read (current-buffer)))) ;; min
1215 (gnus-delete-line)))
1216 (insert (format "%S %d %d y\n" (intern group)
1217 (max (or oactive-max (cdr active)) (cdr active))
1218 (min (or oactive-min (car active)) (car active))))
1219 (goto-char (point-max))
1220 (while (search-backward "\\." nil t)
1221 (delete-char 1))))))
1223 (defun gnus-agent-group-path (group)
1224 "Translate GROUP into a file name."
1226 ;; NOTE: This is what nnmail-group-pathname does as of Apr 2003.
1227 ;; The two methods must be kept synchronized, which is why
1228 ;; gnus-agent-group-pathname was added.
1231 (nnheader-translate-file-chars
1232 (nnheader-replace-duplicate-chars-in-string
1233 (nnheader-replace-chars-in-string
1234 (gnus-group-real-name group)
1237 (if (or nnmail-use-long-file-names
1238 (file-directory-p (expand-file-name group (gnus-agent-directory))))
1240 (mm-encode-coding-string
1241 (nnheader-replace-chars-in-string group ?. ?/)
1242 nnmail-pathname-coding-system)))
1244 (defun gnus-agent-group-pathname (group)
1245 "Translate GROUP into a file name."
1246 ;; nnagent uses nnmail-group-pathname to read articles while
1247 ;; unplugged. The agent must, therefore, use the same directory
1249 (let ((gnus-command-method (or gnus-command-method
1250 (gnus-find-method-for-group group))))
1251 (nnmail-group-pathname (gnus-group-real-name group) (gnus-agent-directory))))
1253 (defun gnus-agent-get-function (method)
1254 (if (gnus-online method)
1259 (defun gnus-agent-covered-methods ()
1260 "Return the subset of methods that are covered by the agent."
1261 (delq nil (mapcar #'gnus-server-to-method gnus-agent-covered-methods)))
1263 ;;; History functions
1265 (defun gnus-agent-history-buffer ()
1266 (cdr (assoc (gnus-agent-method) gnus-agent-history-buffers)))
1268 (defun gnus-agent-open-history ()
1270 (push (cons (gnus-agent-method)
1271 (set-buffer (gnus-get-buffer-create
1272 (format " *Gnus agent %s history*"
1273 (gnus-agent-method)))))
1274 gnus-agent-history-buffers)
1275 (set-buffer-multibyte nil) ;; everything is binary
1278 (let ((file (gnus-agent-lib-file "history")))
1279 (when (file-exists-p file)
1280 (nnheader-insert-file-contents file))
1281 (set (make-local-variable 'gnus-agent-file-name) file))))
1283 (defun gnus-agent-close-history ()
1284 (when (gnus-buffer-live-p gnus-agent-current-history)
1285 (kill-buffer gnus-agent-current-history)
1286 (setq gnus-agent-history-buffers
1287 (delq (assoc (gnus-agent-method) gnus-agent-history-buffers)
1288 gnus-agent-history-buffers))))
1294 (defun gnus-agent-fetch-articles (group articles)
1295 "Fetch ARTICLES from GROUP and put them into the Agent."
1297 (gnus-agent-load-alist group)
1298 (let* ((alist gnus-agent-article-alist)
1299 (headers (if (< (length articles) 2) nil gnus-newsgroup-headers))
1300 (selected-sets (list nil))
1301 (current-set-size 0)
1304 ;; Check each article
1305 (while (setq article (pop articles))
1306 ;; Skip alist entries preceeding this article
1307 (while (> article (or (caar alist) (1+ article)))
1308 (setq alist (cdr alist)))
1310 ;; Prune off articles that we have already fetched.
1311 (unless (and (eq article (caar alist))
1313 ;; Skip headers preceeding this article
1316 (let* ((header (car headers)))
1318 (mail-header-number header)
1320 (setq headers (cdr headers)))
1322 ;; Add this article to the current set
1323 (setcar selected-sets (cons article (car selected-sets)))
1325 ;; Update the set size, when the set is too large start a
1326 ;; new one. I do this after adding the article as I want at
1327 ;; least one article in each set.
1328 (when (< gnus-agent-max-fetch-size
1329 (setq current-set-size
1331 (if (= header-number article)
1332 (let ((char-size (mail-header-chars
1334 (if (<= char-size 0)
1335 ;; The char size was missing/invalid,
1336 ;; assume a worst-case situation of
1337 ;; 65 char/line. If the line count
1338 ;; is missing, arbitrarily assume a
1339 ;; size of 1000 characters.
1340 (max (* 65 (mail-header-lines
1345 (setcar selected-sets (nreverse (car selected-sets)))
1346 (setq selected-sets (cons nil selected-sets)
1347 current-set-size 0))))
1349 (when (or (cdr selected-sets) (car selected-sets))
1350 (let* ((fetched-articles (list nil))
1351 (tail-fetched-articles fetched-articles)
1352 (dir (gnus-agent-group-pathname group))
1353 (date (time-to-days (current-time)))
1354 (case-fold-search t)
1357 (setcar selected-sets (nreverse (car selected-sets)))
1358 (setq selected-sets (nreverse selected-sets))
1360 (gnus-make-directory dir)
1361 (gnus-message 7 "Fetching articles for %s..." group)
1364 (while (setq articles (pop selected-sets))
1365 ;; Fetch the articles from the backend.
1366 (if (gnus-check-backend-function 'retrieve-articles group)
1367 (setq pos (gnus-retrieve-articles articles group))
1370 (while (setq article (pop articles))
1371 (gnus-message 10 "Fetching article %s for %s..."
1374 (gnus-backlog-request-article group article
1376 (gnus-request-article article group))
1377 (goto-char (point-max))
1378 (push (cons article (point)) pos)
1379 (insert-buffer-substring nntp-server-buffer)))
1381 nntp-server-buffer (point-min) (point-max))
1382 (setq pos (nreverse pos)))))
1383 ;; Then save these articles into the Agent.
1385 (set-buffer nntp-server-buffer)
1387 (narrow-to-region (cdar pos) (or (cdadr pos) (point-max)))
1388 (goto-char (point-min))
1389 (unless (eobp) ;; Don't save empty articles.
1390 (when (search-forward "\n\n" nil t)
1391 (when (search-backward "\nXrefs: " nil t)
1392 ;; Handle cross posting.
1393 (goto-char (match-end 0)) ; move to end of header name
1394 (skip-chars-forward "^ ") ; skip server name
1395 (skip-chars-forward " ")
1397 (while (looking-at "\\([^: \n]+\\):\\([0-9]+\\) *")
1398 (push (cons (buffer-substring (match-beginning 1)
1401 (buffer-substring (match-beginning 2)
1404 (goto-char (match-end 0)))
1405 (gnus-agent-crosspost crosses (caar pos) date)))
1406 (goto-char (point-min))
1407 (if (not (re-search-forward
1408 "^Message-ID: *<\\([^>\n]+\\)>" nil t))
1409 (setq id "No-Message-ID-in-article")
1410 (setq id (buffer-substring
1411 (match-beginning 1) (match-end 1))))
1412 (write-region-as-coding-system
1413 gnus-agent-file-coding-system (point-min) (point-max)
1414 (concat dir (number-to-string (caar pos))) nil 'silent)
1416 (gnus-agent-append-to-list
1417 tail-fetched-articles (caar pos)))
1419 (setq pos (cdr pos)))))
1421 (gnus-agent-save-alist group (cdr fetched-articles) date)
1422 (gnus-message 7 ""))
1423 (cdr fetched-articles))))))
1425 (defun gnus-agent-crosspost (crosses article &optional date)
1426 (setq date (or date t))
1428 (let (gnus-agent-article-alist group alist beg end)
1430 (set-buffer gnus-agent-overview-buffer)
1431 (when (nnheader-find-nov-line article)
1434 (setq end (progn (forward-line 1) (point)))))
1436 (setq group (caar crosses))
1437 (unless (setq alist (assoc group gnus-agent-group-alist))
1438 (push (setq alist (list group (gnus-agent-load-alist (caar crosses))))
1439 gnus-agent-group-alist))
1440 (setcdr alist (cons (cons (cdar crosses) date) (cdr alist)))
1442 (set-buffer (gnus-get-buffer-create (format " *Gnus agent overview %s*"
1444 (when (= (point-max) (point-min))
1445 (push (cons group (current-buffer)) gnus-agent-buffer-alist)
1447 (nnheader-insert-file-contents
1448 (gnus-agent-article-name ".overview" group))))
1449 (nnheader-find-nov-line (string-to-number (cdar crosses)))
1450 (insert (string-to-number (cdar crosses)))
1451 (insert-buffer-substring gnus-agent-overview-buffer beg end)
1452 (gnus-agent-check-overview-buffer))
1453 (setq crosses (cdr crosses)))))
1455 (defun gnus-agent-backup-overview-buffer ()
1456 (when gnus-newsgroup-name
1457 (let ((root (gnus-agent-article-name ".overview" gnus-newsgroup-name))
1460 (while (file-exists-p
1461 (setq name (concat root "~"
1462 (int-to-string (setq cnt (1+ cnt))) "~"))))
1463 (write-region (point-min) (point-max) name nil 'no-msg)
1464 (gnus-message 1 "Created backup copy of overview in %s." name)))
1467 (defun gnus-agent-check-overview-buffer (&optional buffer)
1468 "Check the overview file given for sanity.
1469 In particular, checks that the file is sorted by article number
1470 and that there are no duplicates."
1475 (set-buffer buffer))
1478 (goto-char (point-min))
1480 (while (< (point) (point-max))
1482 (cur (condition-case nil
1483 (read (current-buffer))
1486 ((or (not (integerp cur))
1487 (not (eq (char-after) ?\t)))
1489 (setq backed-up (gnus-agent-backup-overview-buffer)))
1491 "Overview buffer contains garbage '%s'."
1493 p (gnus-point-at-eol))))
1496 (setq backed-up (gnus-agent-backup-overview-buffer)))
1498 "Duplicate overview line for %d" cur)
1499 (delete-region (point) (progn (forward-line 1) (point))))
1502 (setq backed-up (gnus-agent-backup-overview-buffer)))
1503 (gnus-message 1 "Overview buffer not sorted!")
1504 (sort-numeric-fields 1 (point-min) (point-max))
1505 (goto-char (point-min))
1508 (setq prev-num cur)))
1509 (forward-line 1)))))))
1511 (defun gnus-agent-flush-cache ()
1513 (while gnus-agent-buffer-alist
1514 (set-buffer (cdar gnus-agent-buffer-alist))
1515 (write-region-as-coding-system
1516 gnus-agent-file-coding-system
1517 (point-min) (point-max)
1518 (gnus-agent-article-name ".overview"
1519 (caar gnus-agent-buffer-alist))
1521 (setq gnus-agent-buffer-alist (cdr gnus-agent-buffer-alist)))
1522 (while gnus-agent-group-alist
1523 (with-temp-file (gnus-agent-article-name
1524 ".agentview" (caar gnus-agent-group-alist))
1525 (princ (cdar gnus-agent-group-alist))
1527 (princ 1 (current-buffer))
1529 (setq gnus-agent-group-alist (cdr gnus-agent-group-alist)))))
1531 (defun gnus-agent-find-parameter (group symbol)
1532 "Search for GROUPs SYMBOL in the group's parameters, the group's
1533 topic parameters, the group's category, or the customizable
1534 variables. Returns the first non-nil value found."
1535 (or (gnus-group-find-parameter group symbol t)
1536 (gnus-group-parameter-value (cdr (gnus-group-category group)) symbol t)
1540 '((agent-short-article . gnus-agent-short-article)
1541 (agent-long-article . gnus-agent-long-article)
1542 (agent-low-score . gnus-agent-low-score)
1543 (agent-high-score . gnus-agent-high-score)
1544 (agent-days-until-old . gnus-agent-expire-days)
1545 (agent-enable-expiration
1546 . gnus-agent-enable-expiration)
1547 (agent-predicate . gnus-agent-predicate)))))))
1549 (defun gnus-agent-fetch-headers (group &optional force)
1550 "Fetch interesting headers into the agent. The group's overview
1551 file will be updated to include the headers while a list of available
1552 article numbers will be returned."
1553 (let* ((fetch-all (and gnus-agent-consider-all-articles
1554 ;; Do not fetch all headers if the predicate
1555 ;; implies that we only consider unread articles.
1556 (not (gnus-predicate-implies-unread
1557 (gnus-agent-find-parameter group
1558 'agent-predicate)))))
1559 (articles (if fetch-all
1560 (gnus-uncompress-range (gnus-active group))
1561 (gnus-list-of-unread-articles group)))
1562 (gnus-decode-encoded-word-function 'identity)
1563 (file (gnus-agent-article-name ".overview" group)))
1564 ;; Check whether the number of articles is not too large.
1565 (when (and (integerp gnus-agent-large-newsgroup)
1566 (> gnus-agent-large-newsgroup 0))
1567 (setq articles (nthcdr (max (- (length articles)
1568 gnus-agent-large-newsgroup)
1572 ;; Add articles with marks to the list of article headers we want to
1573 ;; fetch. Don't fetch articles solely on the basis of a recent or seen
1574 ;; mark, but do fetch recent or seen articles if they have other, more
1575 ;; interesting marks. (We have to fetch articles with boring marks
1576 ;; because otherwise the agent will remove their marks.)
1577 (dolist (arts (gnus-info-marks (gnus-get-info group)))
1578 (unless (memq (car arts) '(seen recent killed cache))
1579 (setq articles (gnus-range-add articles (cdr arts)))))
1580 (setq articles (sort (gnus-uncompress-sequence articles) '<)))
1582 ;; At this point, I have the list of articles to consider for
1583 ;; fetching. This is the list that I'll return to my caller. Some
1584 ;; of these articles may have already been fetched. That's OK as
1585 ;; the fetch article code will filter those out. Internally, I'll
1586 ;; filter this list to just those articles whose headers need to
1588 (let ((articles articles))
1589 ;; Remove known articles.
1590 (when (and (or gnus-agent-cache
1592 (gnus-agent-load-alist group))
1593 ;; Remove articles marked as downloaded.
1595 ;; I want to fetch all headers in the active range.
1596 ;; Therefore, exclude only those headers that are in the
1598 ;; NOTE: This is probably NOT what I want to do after
1599 ;; agent expiration in this group.
1600 (setq articles (gnus-agent-uncached-articles articles group))
1602 ;; I want to only fetch those headers that have never been
1603 ;; fetched. Therefore, exclude all headers that are, or
1604 ;; WERE, in the article alist.
1605 (let ((low (1+ (caar (last gnus-agent-article-alist))))
1606 (high (cdr (gnus-active group))))
1607 ;; Low can be greater than High when the same group is
1608 ;; fetched twice in the same session {The first fetch will
1609 ;; fill the article alist such that (last
1610 ;; gnus-agent-article-alist) equals (cdr (gnus-active
1611 ;; group))}. The addition of one(the 1+ above) then
1612 ;; forces Low to be greater than High. When this happens,
1613 ;; gnus-list-range-intersection returns nil which
1614 ;; indicates that no headers need to be fetched. -- Kevin
1615 (setq articles (gnus-list-range-intersection
1616 articles (list (cons low high)))))))
1619 10 "gnus-agent-fetch-headers: undownloaded articles are '%s'"
1620 (gnus-compress-sequence articles t))
1623 (set-buffer nntp-server-buffer)
1627 (gnus-message 7 "Fetching headers for %s..." group)
1630 (gnus-make-directory (nnheader-translate-file-chars
1631 (file-name-directory file) t))
1633 (unless (eq 'nov (gnus-retrieve-headers articles group))
1634 (nnvirtual-convert-headers))
1635 (gnus-agent-check-overview-buffer)
1636 ;; Move these headers to the overview buffer so that
1637 ;; gnus-agent-braid-nov can merge them with the contents
1640 gnus-agent-overview-buffer (point-min) (point-max))
1641 (when (file-exists-p file)
1642 (gnus-agent-braid-nov group articles file))
1643 (gnus-agent-check-overview-buffer)
1644 (write-region-as-coding-system
1645 gnus-agent-file-coding-system
1646 (point-min) (point-max) file nil 'silent)
1647 (gnus-agent-save-alist group articles nil)
1651 (nnheader-insert-file-contents file)))))
1654 (defsubst gnus-agent-copy-nov-line (article)
1656 (set-buffer gnus-agent-overview-buffer)
1657 (while (and (not (eobp))
1658 (< (setq art (read (current-buffer))) article))
1662 (not (eq article art)))
1663 (set-buffer nntp-server-buffer)
1665 (setq e (progn (forward-line 1) (point)))
1666 (set-buffer nntp-server-buffer)
1667 (insert-buffer-substring gnus-agent-overview-buffer b e))))
1669 (defun gnus-agent-braid-nov (group articles file)
1670 "Merge agent overview data with given file.
1671 Takes headers for ARTICLES from `gnus-agent-overview-buffer' and the given
1672 FILE and places the combined headers into `nntp-server-buffer'."
1674 (set-buffer gnus-agent-overview-buffer)
1675 (goto-char (point-min))
1676 (set-buffer nntp-server-buffer)
1678 (nnheader-insert-file-contents file)
1679 (goto-char (point-max))
1681 (unless (looking-at "[0-9]+\t")
1682 ;; Remove corrupted lines
1684 1 "Overview %s is corrupted. Removing corrupted lines..." file)
1685 (goto-char (point-min))
1687 (if (looking-at "[0-9]+\t")
1689 (delete-region (point) (progn (forward-line 1) (point)))))
1691 (unless (or (= (point-min) (point-max))
1692 (< (setq last (read (current-buffer))) (car articles)))
1693 ;; We do it the hard way.
1694 (when (nnheader-find-nov-line (car articles))
1695 ;; Replacing existing NOV entry
1696 (delete-region (point) (progn (forward-line 1) (point))))
1697 (gnus-agent-copy-nov-line (pop articles))
1701 (while (let ((art (read (current-buffer))))
1702 (cond ((< art (car articles))
1705 ((= art (car articles))
1708 (point) (progn (forward-line 1) (point)))
1714 (gnus-agent-copy-nov-line (pop articles)))))
1716 ;; Copy the rest lines
1717 (set-buffer nntp-server-buffer)
1718 (goto-char (point-max))
1721 (set-buffer gnus-agent-overview-buffer)
1723 (while (<= (read (current-buffer)) last)
1726 (setq start (point))
1727 (set-buffer nntp-server-buffer))
1728 (insert-buffer-substring gnus-agent-overview-buffer start))))
1730 ;; Keeps the compiler from warning about the free variable in
1731 ;; gnus-agent-read-agentview.
1733 (defvar gnus-agent-read-agentview))
1735 (defun gnus-agent-load-alist (group)
1736 "Load the article-state alist for GROUP."
1737 ;; Bind free variable that's used in `gnus-agent-read-agentview'.
1738 (let ((gnus-agent-read-agentview group))
1739 (setq gnus-agent-article-alist
1740 (gnus-cache-file-contents
1741 (gnus-agent-article-name ".agentview" group)
1742 'gnus-agent-file-loading-cache
1743 'gnus-agent-read-agentview))))
1745 ;; Save format may be either 1 or 2. Two is the new, compressed
1746 ;; format that is still being tested. Format 1 is uncompressed but
1747 ;; known to be reliable.
1748 (defconst gnus-agent-article-alist-save-format 2)
1750 (defun gnus-agent-read-agentview (file)
1751 "Load FILE and do a `read' there."
1754 (nnheader-insert-file-contents file)
1755 (goto-char (point-min))
1756 (let ((alist (read (current-buffer)))
1757 (version (condition-case nil (read (current-buffer))
1763 (let ((inhibit-quit t)
1765 (gnus-agent-open-history)
1766 (set-buffer (gnus-agent-history-buffer))
1767 (goto-char (point-min))
1769 (if (and (looking-at
1770 "[^\t\n]+\t\\([0-9]+\\)\t\\([^ \n]+\\) \\([0-9]+\\)")
1771 (string= (match-string 2)
1772 gnus-agent-read-agentview)
1773 (setq entry (assoc (string-to-number (match-string 3)) alist)))
1774 (setcdr entry (string-to-number (match-string 1))))
1776 (gnus-agent-close-history)
1777 (setq changed-version t)))
1779 (setq changed-version (not (= 1 gnus-agent-article-alist-save-format))))
1784 (let ((state (car comp-list))
1785 (sequence (gnus-uncompress-sequence
1787 (mapcar (lambda (article-id)
1788 (setq uncomp (cons (cons article-id state) uncomp)))
1791 (setq alist (sort uncomp
1792 (lambda (first second)
1793 (< (car first) (car second))))))))
1794 (when changed-version
1795 (let ((gnus-agent-article-alist alist))
1796 (gnus-agent-save-alist gnus-agent-read-agentview)))
1799 (defun gnus-agent-save-alist (group &optional articles state dir)
1800 "Save the article-state alist for GROUP."
1801 (let* ((file-name-coding-system nnmail-pathname-coding-system)
1802 (pathname-coding-system nnmail-pathname-coding-system)
1803 (prev (cons nil gnus-agent-article-alist))
1805 print-level print-length item article)
1806 (while (setq article (pop articles))
1807 (while (and (cdr prev)
1808 (< (caadr prev) article))
1809 (setq prev (cdr prev)))
1812 (setcdr prev (list (cons article state))))
1813 ((> (caadr prev) article)
1814 (setcdr prev (cons (cons article state) (cdr prev))))
1815 ((= (caadr prev) article)
1816 (setcdr (cadr prev) state)))
1817 (setq prev (cdr prev)))
1818 (setq gnus-agent-article-alist (cdr all))
1820 (gnus-make-directory dir)
1821 (gnus-make-directory (gnus-agent-article-name "" group)))
1822 (with-temp-file (if dir
1823 (expand-file-name ".agentview" dir)
1824 (gnus-agent-article-name ".agentview" group))
1825 (cond ((eq gnus-agent-article-alist-save-format 1)
1826 (princ gnus-agent-article-alist (current-buffer)))
1827 ((eq gnus-agent-article-alist-save-format 2)
1828 (let ((compressed nil))
1829 (mapcar (lambda (pair)
1830 (let* ((article-id (car pair))
1831 (day-of-download (cdr pair))
1832 (comp-list (assq day-of-download compressed)))
1835 (cons article-id (cdr comp-list)))
1837 (cons (list day-of-download article-id)
1839 nil)) gnus-agent-article-alist)
1840 (mapcar (lambda (comp-list)
1842 (gnus-compress-sequence
1843 (nreverse (cdr comp-list)))))
1845 (princ compressed (current-buffer)))))
1847 (princ gnus-agent-article-alist-save-format (current-buffer))
1850 (defun gnus-agent-article-name (article group)
1851 (expand-file-name article
1852 (file-name-as-directory
1853 (gnus-agent-group-pathname group))))
1855 (defun gnus-agent-batch-confirmation (msg)
1856 "Show error message and return t."
1857 (gnus-message 1 msg)
1861 (defun gnus-agent-batch-fetch ()
1862 "Start Gnus and fetch session."
1865 (let ((gnus-agent-confirmation-function 'gnus-agent-batch-confirmation))
1866 (gnus-agent-fetch-session))
1869 (defun gnus-agent-fetch-session ()
1870 "Fetch all articles and headers that are eligible for fetching."
1872 (unless gnus-agent-covered-methods
1873 (error "No servers are covered by the Gnus agent"))
1874 (unless gnus-plugged
1875 (error "Can't fetch articles while Gnus is unplugged"))
1876 (let ((methods (gnus-agent-covered-methods))
1877 groups group gnus-command-method)
1880 (setq gnus-command-method (car methods))
1881 (when (and (or (gnus-server-opened gnus-command-method)
1882 (gnus-open-server gnus-command-method))
1883 (gnus-online gnus-command-method))
1884 (setq groups (gnus-groups-from-server (car methods)))
1885 (gnus-agent-with-fetch
1886 (while (setq group (pop groups))
1887 (when (<= (gnus-group-level group)
1888 gnus-agent-handle-level)
1889 (if (or debug-on-error debug-on-quit)
1890 (gnus-agent-fetch-group-1
1891 group gnus-command-method)
1893 (gnus-agent-fetch-group-1
1894 group gnus-command-method)
1896 (unless (funcall gnus-agent-confirmation-function
1897 (format "Error %s. Continue? "
1898 (error-message-string err)))
1899 (error "Cannot fetch articles into the Gnus agent")))
1901 (unless (funcall gnus-agent-confirmation-function
1903 "Quit fetching session %s. Continue? "
1904 (error-message-string err)))
1906 "Cannot fetch articles into the Gnus agent")))))))))
1907 (setq methods (cdr methods)))
1908 (gnus-run-hooks 'gnus-agent-fetched-hook)
1909 (gnus-message 6 "Finished fetching articles into the Gnus agent"))))
1911 (defun gnus-agent-fetch-group-1 (group method)
1913 (let ((gnus-command-method method)
1914 (gnus-newsgroup-name group)
1915 (gnus-newsgroup-dependencies gnus-newsgroup-dependencies)
1916 (gnus-newsgroup-headers gnus-newsgroup-headers)
1917 (gnus-newsgroup-scored gnus-newsgroup-scored)
1918 (gnus-use-cache gnus-use-cache)
1919 (gnus-summary-expunge-below gnus-summary-expunge-below)
1920 (gnus-summary-mark-below gnus-summary-mark-below)
1921 (gnus-orphan-score gnus-orphan-score)
1922 ;; Maybe some other gnus-summary local variables should also
1928 category predicate info marks score-param
1930 (unless (gnus-check-group group)
1931 (error "Can't open server for %s" group))
1934 (when (or gnus-newsgroup-active
1936 (gnus-activate-group group))
1937 (let ((marked-articles gnus-newsgroup-downloadable))
1938 ;; Identify the articles marked for download
1939 (unless gnus-newsgroup-active
1940 ;; The variable gnus-newsgroup-active was selected as I need
1941 ;; a gnus-summary local variable that is NOT bound to any
1942 ;; value (its global value should default to nil).
1943 (dolist (mark gnus-agent-download-marks)
1944 (let ((arts (cdr (assq mark (gnus-info-marks
1945 (setq info (gnus-get-info group)))))))
1947 (setq marked-articles (nconc (gnus-uncompress-range arts)
1950 (setq marked-articles (sort marked-articles '<))
1952 ;; Fetch any new articles from the server
1953 (setq articles (gnus-agent-fetch-headers group))
1955 ;; Merge new articles with marked
1956 (setq articles (sort (append marked-articles articles) '<))
1959 ;; Parse them and see which articles we want to fetch.
1960 (setq gnus-newsgroup-dependencies
1961 (or gnus-newsgroup-dependencies
1962 (make-vector (length articles) 0)))
1963 (setq gnus-newsgroup-headers
1964 (or gnus-newsgroup-headers
1965 (gnus-get-newsgroup-headers-xover articles nil nil
1967 ;; `gnus-agent-overview-buffer' may be killed for
1968 ;; timeout reason. If so, recreate it.
1969 (gnus-agent-create-buffer)
1971 ;; Figure out how to select articles in this group
1972 (setq category (gnus-group-category group))
1976 (gnus-agent-find-parameter group 'agent-predicate)))
1978 ;; If the selection predicate requires scoring, score each header
1979 (unless (memq predicate '(gnus-agent-true gnus-agent-false))
1981 (gnus-agent-find-parameter group 'agent-score-file)))
1982 ;; Translate score-param into real one
1985 ((eq score-param 'file)
1986 (setq score-param (gnus-all-score-files group)))
1987 ((stringp (car score-param)))
1989 (setq score-param (list (list score-param)))))
1991 (gnus-score-headers score-param))))
1993 (unless (and (eq predicate 'gnus-agent-false)
1994 (not marked-articles))
1995 (let ((arts (list nil)))
1996 (let ((arts-tail arts)
1997 (alist (gnus-agent-load-alist group))
1998 (marked-articles marked-articles)
1999 (gnus-newsgroup-headers gnus-newsgroup-headers))
2000 (while (setq gnus-headers (pop gnus-newsgroup-headers))
2001 (let ((num (mail-header-number gnus-headers)))
2002 ;; Determine if this article is already in the cache
2004 (> num (caar alist)))
2005 (setq alist (cdr alist)))
2007 (unless (and (eq num (caar alist))
2010 ;; Determine if this article was marked for download.
2011 (while (and marked-articles
2012 (> num (car marked-articles)))
2013 (setq marked-articles
2014 (cdr marked-articles)))
2016 ;; When this article is marked, or selected by the
2017 ;; predicate, add it to the download list
2018 (when (or (eq num (car marked-articles))
2021 (assq num gnus-newsgroup-scored))
2022 gnus-summary-default-score))
2023 (gnus-agent-long-article
2024 (gnus-agent-find-parameter
2025 group 'agent-long-article))
2026 (gnus-agent-short-article
2027 (gnus-agent-find-parameter
2028 group 'agent-short-article))
2029 (gnus-agent-low-score
2030 (gnus-agent-find-parameter
2031 group 'agent-low-score))
2032 (gnus-agent-high-score
2033 (gnus-agent-find-parameter
2034 group 'agent-high-score))
2035 (gnus-agent-expire-days
2036 (gnus-agent-find-parameter
2037 group 'agent-days-until-old)))
2038 (funcall predicate)))
2039 (gnus-agent-append-to-list arts-tail num))))))
2041 (let (fetched-articles)
2042 ;; Fetch all selected articles
2043 (setq gnus-newsgroup-undownloaded
2044 (gnus-sorted-ndifference
2045 gnus-newsgroup-undownloaded
2046 (setq fetched-articles
2048 (gnus-agent-fetch-articles group (cdr arts))
2051 (let ((unfetched-articles
2052 (gnus-sorted-ndifference (cdr arts) fetched-articles)))
2053 (if gnus-newsgroup-active
2054 ;; Update the summary buffer
2056 (dolist (article marked-articles)
2057 (gnus-summary-set-agent-mark article t))
2058 (dolist (article fetched-articles)
2059 (if gnus-agent-mark-unread-after-downloaded
2060 (gnus-summary-mark-article
2061 article gnus-unread-mark))
2062 (when (gnus-summary-goto-subject article nil t)
2063 (gnus-summary-update-download-mark article)))
2064 (dolist (article unfetched-articles)
2065 (gnus-summary-mark-article
2066 article gnus-canceled-mark)))
2068 ;; Update the group buffer.
2070 ;; When some, or all, of the marked articles came
2071 ;; from the download mark. Remove that mark. I
2072 ;; didn't do this earlier as I only want to remove
2073 ;; the marks after the fetch is completed.
2075 (dolist (mark gnus-agent-download-marks)
2076 (when (eq mark 'download)
2078 (assq mark (gnus-info-marks
2079 (setq info (gnus-get-info group))))))
2080 (when (cdr marked-arts)
2082 (delq marked-arts (gnus-info-marks info)))
2083 (gnus-info-set-marks info marks)))))
2084 (let ((read (gnus-info-read
2085 (or info (setq info (gnus-get-info group))))))
2087 info (gnus-add-to-range read unfetched-articles)))
2089 (gnus-group-update-group group t)
2093 (concat "(gnus-group-set-info '"
2094 (gnus-prin1-to-string info)
2098 ;;; Agent Category Mode
2101 (defvar gnus-category-mode-hook nil
2102 "Hook run in `gnus-category-mode' buffers.")
2104 (defvar gnus-category-line-format " %(%20c%): %g\n"
2105 "Format of category lines.
2107 Valid specifiers include:
2108 %c Topic name (string)
2109 %g The number of groups in the topic (integer)
2111 General format specifiers can also be used. See Info node
2112 `(gnus)Formatting Variables'.")
2114 (defvar gnus-category-mode-line-format "Gnus: %%b"
2115 "The format specification for the category mode line.")
2117 (defvar gnus-agent-predicate 'false
2118 "The selection predicate used when no other source is available.")
2120 (defvar gnus-agent-short-article 100
2121 "Articles that have fewer lines than this are short.")
2123 (defvar gnus-agent-long-article 200
2124 "Articles that have more lines than this are long.")
2126 (defvar gnus-agent-low-score 0
2127 "Articles that have a score lower than this have a low score.")
2129 (defvar gnus-agent-high-score 0
2130 "Articles that have a score higher than this have a high score.")
2133 ;;; Internal variables.
2135 (defvar gnus-category-buffer "*Agent Category*")
2137 (defvar gnus-category-line-format-alist
2138 `((?c gnus-tmp-name ?s)
2139 (?g gnus-tmp-groups ?d)))
2141 (defvar gnus-category-mode-line-format-alist
2142 `((?u user-defined ?s)))
2144 (defvar gnus-category-line-format-spec nil)
2145 (defvar gnus-category-mode-line-format-spec nil)
2147 (defvar gnus-category-mode-map nil)
2148 (put 'gnus-category-mode 'mode-class 'special)
2150 (unless gnus-category-mode-map
2151 (setq gnus-category-mode-map (make-sparse-keymap))
2152 (suppress-keymap gnus-category-mode-map)
2154 (gnus-define-keys gnus-category-mode-map
2155 "q" gnus-category-exit
2156 "k" gnus-category-kill
2157 "c" gnus-category-copy
2158 "a" gnus-category-add
2159 "e" gnus-agent-customize-category
2160 "p" gnus-category-edit-predicate
2161 "g" gnus-category-edit-groups
2162 "s" gnus-category-edit-score
2163 "l" gnus-category-list
2165 "\C-c\C-i" gnus-info-find-node
2166 "\C-c\C-b" gnus-bug))
2168 (defvar gnus-category-menu-hook nil
2169 "*Hook run after the creation of the menu.")
2171 (defun gnus-category-make-menu-bar ()
2172 (gnus-turn-off-edit-menu 'category)
2173 (unless (boundp 'gnus-category-menu)
2175 gnus-category-menu gnus-category-mode-map ""
2177 ["Add" gnus-category-add t]
2178 ["Kill" gnus-category-kill t]
2179 ["Copy" gnus-category-copy t]
2180 ["Edit category" gnus-agent-customize-category t]
2181 ["Edit predicate" gnus-category-edit-predicate t]
2182 ["Edit score" gnus-category-edit-score t]
2183 ["Edit groups" gnus-category-edit-groups t]
2184 ["Exit" gnus-category-exit t]))
2186 (gnus-run-hooks 'gnus-category-menu-hook)))
2188 (defun gnus-category-mode ()
2189 "Major mode for listing and editing agent categories.
2191 All normal editing commands are switched off.
2192 \\<gnus-category-mode-map>
2193 For more in-depth information on this mode, read the manual
2194 \(`\\[gnus-info-find-node]').
2196 The following commands are available:
2198 \\{gnus-category-mode-map}"
2200 (when (gnus-visual-p 'category-menu 'menu)
2201 (gnus-category-make-menu-bar))
2202 (kill-all-local-variables)
2203 (gnus-simplify-mode-line)
2204 (setq major-mode 'gnus-category-mode)
2205 (setq mode-name "Category")
2206 (gnus-set-default-directory)
2207 (setq mode-line-process nil)
2208 (use-local-map gnus-category-mode-map)
2209 (buffer-disable-undo)
2210 (setq truncate-lines t)
2211 (setq buffer-read-only t)
2212 (gnus-run-hooks 'gnus-category-mode-hook))
2214 (defalias 'gnus-category-position-point 'gnus-goto-colon)
2216 (defun gnus-category-insert-line (category)
2217 (let* ((gnus-tmp-name (format "%s" (car category)))
2218 (gnus-tmp-groups (length (gnus-agent-cat-groups category))))
2220 (gnus-add-text-properties
2224 (eval gnus-category-line-format-spec))
2225 (list 'gnus-category gnus-tmp-name))))
2227 (defun gnus-enter-category-buffer ()
2228 "Go to the Category buffer."
2230 (gnus-category-setup-buffer)
2231 (gnus-configure-windows 'category)
2232 (gnus-category-prepare))
2234 (defun gnus-category-setup-buffer ()
2235 (unless (get-buffer gnus-category-buffer)
2237 (set-buffer (gnus-get-buffer-create gnus-category-buffer))
2238 (gnus-category-mode))))
2240 (defun gnus-category-prepare ()
2241 (gnus-set-format 'category-mode)
2242 (gnus-set-format 'category t)
2243 (let ((alist gnus-category-alist)
2244 (buffer-read-only nil))
2247 (gnus-category-insert-line (pop alist)))
2248 (goto-char (point-min))
2249 (gnus-category-position-point)))
2251 (defun gnus-category-name ()
2252 (or (intern (get-text-property (gnus-point-at-bol) 'gnus-category))
2253 (error "No category on the current line")))
2255 (defun gnus-category-read ()
2256 "Read the category alist."
2257 (setq gnus-category-alist
2261 (nnheader-insert-file-contents (nnheader-concat gnus-agent-directory "lib/categories"))
2262 (goto-char (point-min))
2263 ;; This code isn't temp, it will be needed so long as
2264 ;; anyone may be migrating from an older version.
2266 ;; Once we're certain that people will not revert to an
2267 ;; earlier version, we can take out the old-list code in
2268 ;; gnus-category-write.
2269 (let* ((old-list (read (current-buffer)))
2270 (new-list (ignore-errors (read (current-buffer)))))
2273 ;; Convert from a positional list to an alist.
2283 '(agent-predicate agent-score-file agent-groups))))
2286 (list (gnus-agent-cat-make 'default 'short)))))
2288 (defun gnus-category-write ()
2289 "Write the category alist."
2290 (setq gnus-category-predicate-cache nil
2291 gnus-category-group-cache nil)
2292 (gnus-make-directory (nnheader-concat gnus-agent-directory "lib"))
2293 (with-temp-file (nnheader-concat gnus-agent-directory "lib/categories")
2294 ;; This prin1 is temporary. It exists so that people can revert
2295 ;; to an earlier version of gnus-agent.
2296 (prin1 (mapcar (lambda (c)
2298 (cdr (assoc 'agent-predicate c))
2299 (cdr (assoc 'agent-score-file c))
2300 (cdr (assoc 'agent-groups c))))
2301 gnus-category-alist)
2304 (prin1 gnus-category-alist (current-buffer))))
2306 (defun gnus-category-edit-predicate (category)
2307 "Edit the predicate for CATEGORY."
2308 (interactive (list (gnus-category-name)))
2309 (let ((info (assq category gnus-category-alist)))
2311 (gnus-agent-cat-predicate info)
2312 (format "Editing the select predicate for category %s" category)
2313 `(lambda (predicate)
2314 ;; Avoid run-time execution of setf form
2315 ;; (setf (gnus-agent-cat-predicate (assq ',category gnus-category-alist))
2317 ;; use its expansion instead:
2318 (gnus-agent-cat-set-property (assq ',category gnus-category-alist)
2319 'agent-predicate predicate)
2321 (gnus-category-write)
2322 (gnus-category-list)))))
2324 (defun gnus-category-edit-score (category)
2325 "Edit the score expression for CATEGORY."
2326 (interactive (list (gnus-category-name)))
2327 (let ((info (assq category gnus-category-alist)))
2329 (gnus-agent-cat-score-file info)
2330 (format "Editing the score expression for category %s" category)
2331 `(lambda (score-file)
2332 ;; Avoid run-time execution of setf form
2333 ;; (setf (gnus-agent-cat-score-file (assq ',category gnus-category-alist))
2335 ;; use its expansion instead:
2336 (gnus-agent-cat-set-property (assq ',category gnus-category-alist)
2337 'agent-score-file score-file)
2339 (gnus-category-write)
2340 (gnus-category-list)))))
2342 (defun gnus-category-edit-groups (category)
2343 "Edit the group list for CATEGORY."
2344 (interactive (list (gnus-category-name)))
2345 (let ((info (assq category gnus-category-alist)))
2347 (gnus-agent-cat-groups info)
2348 (format "Editing the group list for category %s" category)
2350 ;; Avoid run-time execution of setf form
2351 ;; (setf (gnus-agent-cat-groups (assq ',category gnus-category-alist))
2353 ;; use its expansion instead:
2354 (gnus-agent-set-cat-groups (assq ',category gnus-category-alist)
2357 (gnus-category-write)
2358 (gnus-category-list)))))
2360 (defun gnus-category-kill (category)
2361 "Kill the current category."
2362 (interactive (list (gnus-category-name)))
2363 (let ((info (assq category gnus-category-alist))
2364 (buffer-read-only nil))
2366 (setq gnus-category-alist (delq info gnus-category-alist))
2367 (gnus-category-write)))
2369 (defun gnus-category-copy (category to)
2370 "Copy the current category."
2371 (interactive (list (gnus-category-name) (intern (read-string "New name: "))))
2372 (let ((info (assq category gnus-category-alist)))
2373 (push (let ((newcat (gnus-copy-sequence info)))
2374 (setf (gnus-agent-cat-name newcat) to)
2375 (setf (gnus-agent-cat-groups newcat) nil)
2377 gnus-category-alist)
2378 (gnus-category-write)
2379 (gnus-category-list)))
2381 (defun gnus-category-add (category)
2382 "Create a new category."
2383 (interactive "SCategory name: ")
2384 (when (assq category gnus-category-alist)
2385 (error "Category %s already exists" category))
2386 (push (gnus-agent-cat-make category)
2387 gnus-category-alist)
2388 (gnus-category-write)
2389 (gnus-category-list))
2391 (defun gnus-category-list ()
2392 "List all categories."
2394 (gnus-category-prepare))
2396 (defun gnus-category-exit ()
2397 "Return to the group buffer."
2399 (kill-buffer (current-buffer))
2400 (gnus-configure-windows 'group t))
2402 ;; To avoid having 8-bit characters in the source file.
2403 (defvar gnus-category-not (list '! 'not (intern (format "%c" 172))))
2405 (defvar gnus-category-predicate-alist
2406 '((spam . gnus-agent-spam-p)
2407 (short . gnus-agent-short-p)
2408 (long . gnus-agent-long-p)
2409 (low . gnus-agent-low-scored-p)
2410 (high . gnus-agent-high-scored-p)
2411 (read . gnus-agent-read-p)
2412 (true . gnus-agent-true)
2413 (false . gnus-agent-false))
2414 "Mapping from short score predicate symbols to predicate functions.")
2416 (defun gnus-agent-spam-p ()
2417 "Say whether an article is spam or not."
2418 (unless gnus-agent-spam-hashtb
2419 (setq gnus-agent-spam-hashtb (gnus-make-hashtable 1000)))
2420 (if (not (equal (mail-header-references gnus-headers) ""))
2422 (let ((string (gnus-simplify-subject (mail-header-subject gnus-headers))))
2424 (gnus-gethash string gnus-agent-spam-hashtb)
2425 (gnus-sethash string t gnus-agent-spam-hashtb)))))
2427 (defun gnus-agent-short-p ()
2428 "Say whether an article is short or not."
2429 (< (mail-header-lines gnus-headers) gnus-agent-short-article))
2431 (defun gnus-agent-long-p ()
2432 "Say whether an article is long or not."
2433 (> (mail-header-lines gnus-headers) gnus-agent-long-article))
2435 (defun gnus-agent-low-scored-p ()
2436 "Say whether an article has a low score or not."
2437 (< gnus-score gnus-agent-low-score))
2439 (defun gnus-agent-high-scored-p ()
2440 "Say whether an article has a high score or not."
2441 (> gnus-score gnus-agent-high-score))
2443 (defun gnus-agent-read-p ()
2444 "Say whether an article is read or not."
2445 (gnus-member-of-range (mail-header-number gnus-headers)
2446 (gnus-info-read (gnus-get-info gnus-newsgroup-name))))
2448 (defun gnus-category-make-function (predicate)
2449 "Make a function from PREDICATE."
2450 (let ((func (gnus-category-make-function-1 predicate)))
2451 (if (and (= (length func) 1)
2452 (symbolp (car func)))
2454 (gnus-byte-compile `(lambda () ,func)))))
2456 (defun gnus-agent-true ()
2460 (defun gnus-agent-false ()
2464 (defun gnus-category-make-function-1 (predicate)
2465 "Make a function from PREDICATE."
2467 ;; Functions are just returned as is.
2468 ((or (symbolp predicate)
2469 (functionp predicate))
2470 `(,(or (cdr (assq predicate gnus-category-predicate-alist))
2472 ;; More complex predicate.
2475 ((memq (car predicate) '(& and))
2477 ((memq (car predicate) '(| or))
2479 ((memq (car predicate) gnus-category-not)
2481 ,@(mapcar 'gnus-category-make-function-1 (cdr predicate))))
2483 (error "Unknown predicate type: %s" predicate))))
2485 (defun gnus-get-predicate (predicate)
2486 "Return the function implementing PREDICATE."
2487 (or (cdr (assoc predicate gnus-category-predicate-cache))
2488 (let ((func (gnus-category-make-function predicate)))
2489 (setq gnus-category-predicate-cache
2490 (nconc gnus-category-predicate-cache
2491 (list (cons predicate func))))
2494 (defun gnus-predicate-implies-unread (predicate)
2495 "Say whether PREDICATE implies unread articles only.
2496 It is okay to miss some cases, but there must be no false positives.
2497 That is, if this predicate returns true, then indeed the predicate must
2498 return only unread articles."
2499 (eq t (gnus-function-implies-unread-1
2500 (gnus-category-make-function-1 predicate))))
2502 (defun gnus-function-implies-unread-1 (function)
2503 "Recursively evaluate a predicate function to determine whether it can select
2504 any read articles. Returns t if the function is known to never
2505 return read articles, nil when it is known to always return read
2506 articles, and t_nil when the function may return both read and unread
2508 (let ((func (car function))
2509 (args (mapcar 'gnus-function-implies-unread-1 (cdr function))))
2510 (cond ((eq func 'and)
2511 (cond ((memq t args) ; if any argument returns only unread articles
2512 ;; then that argument constrains the result to only unread articles.
2514 ((memq 't_nil args) ; if any argument is indeterminate
2515 ;; then the result is indeterminate
2518 (cond ((memq nil args) ; if any argument returns read articles
2519 ;; then that argument ensures that the results includes read articles.
2521 ((memq 't_nil args) ; if any argument is indeterminate
2522 ;; then that argument ensures that the results are indeterminate
2524 (t ; if all arguments return only unread articles
2525 ;; then the result returns only unread articles
2528 (cond ((eq (car args) 't_nil) ; if the argument is indeterminate
2529 ; then the result is indeterminate
2532 ; toggle the result to be the opposite of the argument
2534 ((eq func 'gnus-agent-read-p)
2535 nil) ; The read predicate NEVER returns unread articles
2536 ((eq func 'gnus-agent-false)
2537 t) ; The false predicate returns t as the empty set excludes all read articles
2538 ((eq func 'gnus-agent-true)
2539 nil) ; The true predicate ALWAYS returns read articles
2540 ((catch 'found-match
2541 (let ((alist gnus-category-predicate-alist))
2543 (if (eq func (cdar alist))
2544 (throw 'found-match t)
2545 (setq alist (cdr alist))))))
2546 't_nil) ; All other predicates return read and unread articles
2548 (error "Unknown predicate function: %s" function)))))
2550 (defun gnus-group-category (group)
2551 "Return the category GROUP belongs to."
2552 (unless gnus-category-group-cache
2553 (setq gnus-category-group-cache (gnus-make-hashtable 1000))
2554 (let ((cs gnus-category-alist)
2556 (while (setq cat (pop cs))
2557 (setq groups (gnus-agent-cat-groups cat))
2559 (gnus-sethash (pop groups) cat gnus-category-group-cache)))))
2560 (or (gnus-gethash group gnus-category-group-cache)
2561 (assq 'default gnus-category-alist)))
2563 (defun gnus-agent-expire-group (group &optional articles force)
2564 "Expire all old articles in GROUP.
2565 If you want to force expiring of certain articles, this function can
2566 take ARTICLES, and FORCE parameters as well.
2568 The articles on which the expiration process runs are selected as follows:
2569 if ARTICLES is null, all read and unmarked articles.
2570 if ARTICLES is t, all articles.
2571 if ARTICLES is a list, just those articles.
2572 FORCE is equivalent to setting the expiration predicates to true."
2574 (list (let ((def (or (gnus-group-group-name)
2575 gnus-newsgroup-name)))
2576 (let ((select (read-string (if def
2577 (concat "Group Name ("
2580 (if (and (equal "" select)
2586 (gnus-agent-expire articles group force)
2587 (let ( ;; Bind gnus-agent-expire-stats to enable tracking of
2588 ;; expiration statistics of this single group
2589 (gnus-agent-expire-stats (list 0 0 0.0)))
2590 (if (or (not (eq articles t))
2592 (concat "Are you sure that you want to "
2593 "expire all articles in " group ".")))
2594 (let ((gnus-command-method (gnus-find-method-for-group group))
2595 (overview (gnus-get-buffer-create " *expire overview*"))
2598 (let ((active-file (gnus-agent-lib-file "active")))
2599 (when (file-exists-p active-file)
2601 (nnheader-insert-file-contents active-file)
2602 (gnus-active-to-gnus-format
2604 (setq orig (gnus-make-hashtable
2605 (count-lines (point-min) (point-max))))))
2607 (gnus-agent-expire-group-1
2608 group overview (gnus-gethash-safe group orig)
2610 (gnus-agent-write-active active-file orig t)))
2611 (kill-buffer overview))))
2612 (gnus-message 4 (gnus-agent-expire-done-message)))))
2614 (defun gnus-agent-expire-group-1 (group overview active articles force)
2615 ;; Internal function - requires caller to have set
2616 ;; gnus-command-method, initialized overview buffer, and to have
2617 ;; provided a non-nil active
2619 (let ((dir (gnus-agent-group-pathname group)))
2620 (when (boundp 'gnus-agent-expire-current-dirs)
2621 (set 'gnus-agent-expire-current-dirs
2623 (symbol-value 'gnus-agent-expire-current-dirs))))
2625 (if (and (not force)
2626 (eq 'DISABLE (gnus-agent-find-parameter group
2627 'agent-enable-expiration)))
2628 (gnus-message 5 "Expiry skipping over %s" group)
2629 (gnus-message 5 "Expiring articles in %s" group)
2630 (gnus-agent-load-alist group)
2631 (let* ((stats (if (boundp 'gnus-agent-expire-stats)
2632 ;; Use the list provided by my caller
2633 (symbol-value 'gnus-agent-expire-stats)
2634 ;; otherwise use my own temporary list
2636 (info (gnus-get-info group))
2637 (alist gnus-agent-article-alist)
2638 (day (- (time-to-days (current-time))
2639 (gnus-agent-find-parameter group 'agent-days-until-old)))
2640 (specials (if (and alist
2642 ;; This could be a bit of a problem. I need to
2643 ;; keep the last article to avoid refetching
2644 ;; headers when using nntp in the backend. At
2645 ;; the same time, if someone uses a backend
2646 ;; that supports article moving then I may have
2647 ;; to remove the last article to complete the
2648 ;; move. Right now, I'm going to assume that
2649 ;; FORCE overrides specials.
2650 (list (caar (last alist)))))
2651 (unreads ;; Articles that are excluded from the
2652 ;; expiration process
2653 (cond (gnus-agent-expire-all
2654 ;; All articles are marked read by global decree
2657 ;; All articles are marked read by function
2661 ;; Unread articles are marked protected from
2662 ;; expiration Don't call
2663 ;; gnus-list-of-unread-articles as it returns
2664 ;; articles that have not been fetched into the
2667 (gnus-agent-unread-articles group)))
2669 ;; All articles EXCEPT those named by the caller
2670 ;; are protected from expiration
2671 (gnus-sorted-difference
2672 (gnus-uncompress-range
2674 (caar (last alist))))
2675 (sort articles '<)))))
2676 (marked ;; More articles that are excluded from the
2677 ;; expiration process
2678 (cond (gnus-agent-expire-all
2679 ;; All articles are unmarked by global decree
2682 ;; All articles are unmarked by function
2686 ;; All articles may as well be unmarked as the
2687 ;; unreads list already names the articles we are
2691 ;; Ticked and/or dormant articles are excluded
2694 (gnus-uncompress-range
2695 (cdr (assq 'tick (gnus-info-marks info))))
2696 (gnus-uncompress-range
2698 (gnus-info-marks info))))))))
2699 (nov-file (concat dir ".overview"))
2705 ;; The normal article alist contains elements that look like
2706 ;; (article# . fetch_date) I need to combine other
2707 ;; information with this list. For example, a flag indicating
2708 ;; that a particular article MUST BE KEPT. To do this, I'm
2709 ;; going to transform the elements to look like (article#
2710 ;; fetch_date keep_flag NOV_entry_marker) Later, I'll reverse
2711 ;; the process to generate the expired article alist.
2713 ;; Convert the alist elements to (article# fetch_date nil
2715 (setq dlist (mapcar (lambda (e)
2716 (list (car e) (cdr e) nil nil)) alist))
2718 ;; Convert the keep lists to elements that look like (article#
2719 ;; nil keep_flag nil) then append it to the expanded dlist
2720 ;; These statements are sorted by ascending precidence of the
2722 (setq dlist (nconc dlist
2724 (list e nil 'unread nil))
2726 (setq dlist (nconc dlist
2728 (list e nil 'marked nil))
2730 (setq dlist (nconc dlist
2732 (list e nil 'special nil))
2735 (set-buffer overview)
2737 (buffer-disable-undo)
2738 (when (file-exists-p nov-file)
2739 (gnus-message 7 "gnus-agent-expire: Loading overview...")
2740 (nnheader-insert-file-contents nov-file)
2741 (goto-char (point-min))
2744 (while (< (setq p (point)) (point-max))
2746 ;; If I successfully read an integer (the plus zero
2747 ;; ensures a numeric type), prepend a marker entry
2749 (push (list (+ 0 (read (current-buffer))) nil nil
2750 (set-marker (make-marker) p))
2753 (gnus-message 1 "gnus-agent-expire: read error \
2754 occurred when reading expression at %s in %s. Skipping to next \
2755 line." (point) nov-file)))
2756 ;; Whether I succeeded, or failed, it doesn't matter.
2757 ;; Move to the next line then try again.
2761 7 "gnus-agent-expire: Loading overview... Done"))
2762 (set-buffer-modified-p nil)
2764 ;; At this point, all of the information is in dlist. The
2765 ;; only problem is that much of it is spread across multiple
2766 ;; entries. Sort then MERGE!!
2767 (gnus-message 7 "gnus-agent-expire: Sorting entries... ")
2768 ;; If two entries have the same article-number then sort by
2769 ;; ascending keep_flag.
2776 (cond ((< (nth 0 a) (nth 0 b))
2778 ((> (nth 0 a) (nth 0 b))
2781 (let ((a (or (symbol-value (nth 2 a))
2783 (b (or (symbol-value (nth 2 b))
2786 (gnus-message 7 "gnus-agent-expire: Sorting entries... Done")
2787 (gnus-message 7 "gnus-agent-expire: Merging entries... ")
2788 (let ((dlist dlist))
2789 (while (cdr dlist) ; I'm not at the end-of-list
2790 (if (eq (caar dlist) (caadr dlist))
2791 (let ((first (cdr (car dlist)))
2792 (secnd (cdr (cadr dlist))))
2793 (setcar first (or (car first)
2794 (car secnd))) ; fetch_date
2795 (setq first (cdr first)
2797 (setcar first (or (car first)
2798 (car secnd))) ; Keep_flag
2799 (setq first (cdr first)
2801 (setcar first (or (car first)
2802 (car secnd))) ; NOV_entry_marker
2804 (setcdr dlist (cddr dlist)))
2805 (setq dlist (cdr dlist)))))
2806 (gnus-message 7 "gnus-agent-expire: Merging entries... Done")
2808 (let* ((len (float (length dlist)))
2812 (let ((new-completed (truncate (* 100.0
2813 (/ (setq cnt (1+ cnt))
2816 (when (> new-completed completed)
2817 (setq completed new-completed)
2818 (gnus-message 7 "%3d%% completed..." completed)))
2819 (let* ((entry (car dlist))
2820 (article-number (nth 0 entry))
2821 (fetch-date (nth 1 entry))
2822 (keep (nth 2 entry))
2823 (marker (nth 3 entry)))
2826 ;; Kept articles are unread, marked, or special.
2828 (gnus-agent-message 10
2829 "gnus-agent-expire: %s:%d: Kept %s article%s."
2830 group article-number keep (if fetch-date " and file" ""))
2832 (unless (file-exists-p
2833 (concat dir (number-to-string
2835 (setf (nth 1 entry) nil)
2836 (gnus-agent-message 3 "gnus-agent-expire cleared \
2837 download flag on %s:%d as the cached article file is missing."
2838 group (caar dlist)))
2840 (gnus-message 1 "gnus-agent-expire detected a \
2841 missing NOV entry. Run gnus-agent-regenerate-group to restore it.")))
2842 (gnus-agent-append-to-list
2844 (cons article-number fetch-date)))
2846 ;; The following articles are READ, UNMARKED, and
2847 ;; ORDINARY. See if they can be EXPIRED!!!
2850 ((not (integerp fetch-date))
2851 'read) ;; never fetched article (may expire
2853 ((not (file-exists-p
2854 (concat dir (number-to-string
2856 (setf (nth 1 entry) nil)
2857 'externally-expired) ;; Can't find the cached
2858 ;; article. Handle case
2859 ;; as though this article
2860 ;; was never fetched.
2862 ;; We now have the arrival day, so we see
2863 ;; whether it's old enough to be expired.
2869 ;; I found some reason to expire this entry.
2871 (let ((actions nil))
2872 (when (memq type '(forced expired))
2873 (ignore-errors ; Just being paranoid.
2874 (let ((file-name (concat dir (number-to-string
2876 (incf (nth 2 stats) (nth 7 (file-attributes file-name)))
2877 (incf (nth 1 stats))
2878 (delete-file file-name))
2879 (push "expired cached article" actions))
2880 (setf (nth 1 entry) nil)
2884 (push "NOV entry removed" actions)
2887 (incf (nth 0 stats))
2889 (let ((from (gnus-point-at-bol))
2890 (to (progn (forward-line 1) (point))))
2891 (incf (nth 2 stats) (- to from))
2892 (delete-region from to)))
2894 ;; If considering all articles is set, I can only
2895 ;; expire article IDs that are no longer in the
2896 ;; active range (That is, articles that preceed the
2897 ;; first article in the new alist).
2898 (if (and gnus-agent-consider-all-articles
2899 (>= article-number (car active)))
2900 ;; I have to keep this ID in the alist
2901 (gnus-agent-append-to-list
2902 tail-alist (cons article-number fetch-date))
2903 (push (format "Removed %s article number from \
2904 article alist" type) actions))
2907 (gnus-agent-message 8 "gnus-agent-expire: %s:%d: %s"
2908 group article-number
2909 (mapconcat 'identity actions ", ")))))
2912 10 "gnus-agent-expire: %s:%d: Article kept as \
2913 expiration tests failed." group article-number)
2914 (gnus-agent-append-to-list
2915 tail-alist (cons article-number fetch-date)))
2918 ;; Clean up markers as I want to recycle this buffer
2919 ;; over several groups.
2921 (set-marker marker nil))
2923 (setq dlist (cdr dlist))))
2925 (setq alist (cdr alist))
2927 (let ((inhibit-quit t))
2928 (unless (equal alist gnus-agent-article-alist)
2929 (setq gnus-agent-article-alist alist)
2930 (gnus-agent-save-alist group)
2932 ;; The active list changed, set the agent's active range
2933 ;; to match the beginning of the list.
2935 (setcar active (caar alist))))
2937 (when (buffer-modified-p)
2938 (gnus-make-directory dir)
2939 (write-region-as-coding-system gnus-agent-file-coding-system
2940 (point-min) (point-max) nov-file
2942 ;; clear the modified flag as that I'm not confused by
2943 ;; its status on the next pass through this routine.
2944 (set-buffer-modified-p nil))
2946 (when (eq articles t)
2947 (gnus-summary-update-info))))))))
2949 (defun gnus-agent-expire (&optional articles group force)
2950 "Expire all old articles.
2951 If you want to force expiring of certain articles, this function can
2952 take ARTICLES, GROUP and FORCE parameters as well.
2954 The articles on which the expiration process runs are selected as follows:
2955 if ARTICLES is null, all read and unmarked articles.
2956 if ARTICLES is t, all articles.
2957 if ARTICLES is a list, just those articles.
2958 Setting GROUP will limit expiration to that group.
2959 FORCE is equivalent to setting the expiration predicates to true."
2963 (gnus-agent-expire-group group articles force)
2964 (if (or (not (eq articles t))
2965 (yes-or-no-p "Are you sure that you want to expire all \
2966 articles in every agentized group."))
2967 (let ((methods (gnus-agent-covered-methods))
2968 ;; Bind gnus-agent-expire-current-dirs to enable tracking
2969 ;; of agent directories.
2970 (gnus-agent-expire-current-dirs nil)
2971 ;; Bind gnus-agent-expire-stats to enable tracking of
2972 ;; expiration statistics across all groups
2973 (gnus-agent-expire-stats (list 0 0 0.0))
2974 gnus-command-method overview orig)
2975 (setq overview (gnus-get-buffer-create " *expire overview*"))
2977 (while (setq gnus-command-method (pop methods))
2978 (let ((active-file (gnus-agent-lib-file "active")))
2979 (when (file-exists-p active-file)
2981 (nnheader-insert-file-contents active-file)
2982 (gnus-active-to-gnus-format
2984 (setq orig (gnus-make-hashtable
2985 (count-lines (point-min) (point-max))))))
2986 (dolist (expiring-group (gnus-groups-from-server
2987 gnus-command-method))
2989 (gnus-gethash-safe expiring-group orig)))
2993 (gnus-agent-expire-group-1
2994 expiring-group overview active articles force)))))
2995 (gnus-agent-write-active active-file orig t))))
2996 (kill-buffer overview))
2997 (gnus-agent-expire-unagentized-dirs)
2998 (gnus-message 4 (gnus-agent-expire-done-message))))))
3000 (defun gnus-agent-expire-done-message ()
3001 (if (and (> gnus-verbose 4)
3002 (boundp 'gnus-agent-expire-stats))
3003 (let* ((stats (symbol-value 'gnus-agent-expire-stats))
3004 (size (nth 2 stats))
3005 (units '(B KB MB GB)))
3006 (while (and (> size 1024.0)
3008 (setq size (/ size 1024.0)
3011 (format "Expiry recovered %d NOV entries, deleted %d files,\
3018 (defun gnus-agent-expire-unagentized-dirs ()
3019 (when (and gnus-agent-expire-unagentized-dirs
3020 (boundp 'gnus-agent-expire-current-dirs))
3021 (let* ((keep (gnus-make-hashtable))
3022 ;; Formally bind gnus-agent-expire-current-dirs so that the
3023 ;; compiler will not complain about free references.
3024 (gnus-agent-expire-current-dirs
3025 (symbol-value 'gnus-agent-expire-current-dirs))
3028 (gnus-sethash gnus-agent-directory t keep)
3029 (while gnus-agent-expire-current-dirs
3030 (setq dir (pop gnus-agent-expire-current-dirs))
3031 (when (and (stringp dir)
3032 (file-directory-p dir))
3033 (while (not (gnus-gethash dir keep))
3034 (gnus-sethash dir t keep)
3035 (setq dir (file-name-directory (directory-file-name dir))))))
3042 "Given a directory, check it and its subdirectories for
3043 membership in the keep hash. If it isn't found, add
3045 (let ((files (directory-files d))
3047 (while (setq file (pop files))
3048 (cond ((equal file ".") ; Ignore self
3050 ((equal file "..") ; Ignore parent
3052 ((equal file ".overview")
3053 ;; Directory must contain .overview to be
3054 ;; agent's cache of a group.
3055 (let ((d (file-name-as-directory d))
3057 ;; Search ancestor's for last directory NOT
3058 ;; found in keep hash.
3059 (while (not (gnus-gethash
3060 (setq d (file-name-directory d)) keep))
3062 d (directory-file-name d)))
3063 ;; if ANY ancestor was NOT in keep hash and
3064 ;; it it's already in to-remove, add it to
3067 (not (member r to-remove)))
3068 (push r to-remove))))
3069 ((file-directory-p (setq file (nnheader-concat d file)))
3070 (funcall checker file)))))))))
3071 (funcall checker (expand-file-name gnus-agent-directory))
3073 (when (and to-remove
3074 (or gnus-expert-user
3076 "gnus-agent-expire has identified local directories that are\
3077 not currently required by any agentized group. Do you wish to consider\
3080 (let ((dir (pop to-remove)))
3081 (if (gnus-y-or-n-p (format "Delete %s? " dir))
3082 (let* (delete-recursive
3087 (if (file-directory-p f-or-d)
3089 (delete-directory f-or-d)
3092 (or (member f '("." ".."))
3093 (funcall delete-recursive
3096 (directory-files f-or-d))
3097 (delete-directory f-or-d)))
3098 (delete-file f-or-d)))))))
3099 (funcall delete-recursive dir))))))))))
3102 (defun gnus-agent-batch ()
3103 "Start Gnus, send queue and fetch session."
3105 (let ((init-file-user "")
3106 (gnus-always-read-dribble-file t))
3108 (let ((gnus-agent-confirmation-function 'gnus-agent-batch-confirmation))
3109 (gnus-group-send-queue)
3110 (gnus-agent-fetch-session)))
3112 (defun gnus-agent-unread-articles (group)
3113 (let* ((read (gnus-info-read (gnus-get-info group)))
3114 (known (gnus-agent-load-alist group))
3116 (tail-unread unread))
3117 (while (and known read)
3118 (let ((candidate (car (pop known))))
3119 (while (let* ((range (car read))
3120 (min (if (numberp range) range (car range)))
3121 (max (if (numberp range) range (cdr range))))
3122 (cond ((or (not min)
3124 (gnus-agent-append-to-list tail-unread candidate)
3127 (setq read (cdr read))
3128 ;; return t so that I always loop one more
3129 ;; time. If I just iterated off the end of
3130 ;; read, min will become nil and the current
3131 ;; candidate will be added to the unread list.
3134 (gnus-agent-append-to-list tail-unread (car (pop known))))
3137 (defun gnus-agent-uncached-articles (articles group &optional cached-header)
3138 "Restrict ARTICLES to numbers already fetched.
3139 Returns a sublist of ARTICLES that excludes thos article ids in GROUP
3140 that have already been fetched.
3141 If CACHED-HEADER is nil, articles are only excluded if the article itself
3144 ;; Logically equivalent to: (gnus-sorted-difference articles (mapcar
3145 ;; 'car gnus-agent-article-alist))
3147 ;; Functionally, I don't need to construct a temp list using mapcar.
3149 (if (and (or gnus-agent-cache (not gnus-plugged))
3150 (gnus-agent-load-alist group))
3151 (let* ((ref gnus-agent-article-alist)
3153 (uncached (list nil))
3154 (tail-uncached uncached))
3155 (while (and ref arts)
3156 (let ((v1 (car arts))
3158 (cond ((< v1 v2) ; v1 does not appear in the reference list
3159 (gnus-agent-append-to-list tail-uncached v1)
3160 (setq arts (cdr arts)))
3162 (unless (or cached-header (cdar ref)) ; v1 is already cached
3163 (gnus-agent-append-to-list tail-uncached v1))
3164 (setq arts (cdr arts))
3165 (setq ref (cdr ref)))
3166 (t ; reference article (v2) preceeds the list being filtered
3167 (setq ref (cdr ref))))))
3169 (gnus-agent-append-to-list tail-uncached (pop arts)))
3171 ;; if gnus-agent-load-alist fails, no articles are cached.
3174 (defun gnus-agent-retrieve-headers (articles group &optional fetch-old)
3176 (gnus-agent-create-buffer)
3177 (let ((gnus-decode-encoded-word-function 'identity)
3178 (file (gnus-agent-article-name ".overview" group))
3179 cached-articles uncached-articles)
3180 (gnus-make-directory (nnheader-translate-file-chars
3181 (file-name-directory file) t))
3183 ;; Populate temp buffer with known headers
3184 (when (file-exists-p file)
3185 (with-current-buffer gnus-agent-overview-buffer
3187 (let ((nnheader-file-coding-system
3188 gnus-agent-file-coding-system))
3189 (nnheader-insert-nov-file file (car articles)))))
3191 (if (setq uncached-articles (gnus-agent-uncached-articles articles group
3194 ;; Populate nntp-server-buffer with uncached headers
3195 (set-buffer nntp-server-buffer)
3197 (cond ((not (eq 'nov (let (gnus-agent) ; Turn off agent
3198 (gnus-retrieve-headers
3199 uncached-articles group fetch-old))))
3200 (nnvirtual-convert-headers))
3201 ((eq 'nntp (car gnus-current-select-method))
3202 ;; The author of gnus-get-newsgroup-headers-xover
3203 ;; reports that the XOVER command is commonly
3204 ;; unreliable. The problem is that recently
3205 ;; posted articles may not be entered into the
3206 ;; NOV database in time to respond to my XOVER
3209 ;; I'm going to use his assumption that the NOV
3210 ;; database is updated in order of ascending
3211 ;; article ID. Therefore, a response containing
3212 ;; article ID N implies that all articles from 1
3213 ;; to N-1 are up-to-date. Therefore, missing
3214 ;; articles in that range have expired.
3216 (set-buffer nntp-server-buffer)
3217 (let* ((fetched-articles (list nil))
3218 (tail-fetched-articles fetched-articles)
3219 (min (cond ((numberp fetch-old)
3220 (max 1 (- (car articles) fetch-old)))
3225 (max (car (last articles))))
3227 ;; Get the list of articles that were fetched
3228 (goto-char (point-min))
3229 (let ((pm (point-max)))
3230 (while (< (point) pm)
3231 (when (looking-at "[0-9]+\t")
3232 (gnus-agent-append-to-list
3233 tail-fetched-articles
3234 (read (current-buffer))))
3237 ;; Clip this list to the headers that will
3238 ;; actually be returned
3239 (setq fetched-articles (gnus-list-range-intersection
3240 (cdr fetched-articles)
3243 ;; Clip the uncached articles list to exclude
3244 ;; IDs after the last FETCHED header. The
3245 ;; excluded IDs may be fetchable using HEAD.
3246 (if (car tail-fetched-articles)
3247 (setq uncached-articles
3248 (gnus-list-range-intersection
3250 (cons (car uncached-articles)
3251 (car tail-fetched-articles)))))
3253 ;; Create the list of articles that were
3254 ;; "successfully" fetched. Success, in this
3255 ;; case, means that the ID should not be
3256 ;; fetched again. In the case of an expired
3257 ;; article, the header will not be fetched.
3258 (setq uncached-articles
3259 (gnus-sorted-nunion fetched-articles
3263 ;; Erase the temp buffer
3264 (set-buffer gnus-agent-overview-buffer)
3267 ;; Copy the nntp-server-buffer to the temp buffer
3268 (set-buffer nntp-server-buffer)
3269 (copy-to-buffer gnus-agent-overview-buffer (point-min) (point-max))
3271 ;; Merge the temp buffer with the known headers (found on
3272 ;; disk in FILE) into the nntp-server-buffer
3273 (when (and uncached-articles (file-exists-p file))
3274 (gnus-agent-braid-nov group uncached-articles file))
3276 ;; Save the new set of known headers to FILE
3277 (set-buffer nntp-server-buffer)
3278 (gnus-agent-check-overview-buffer)
3279 (write-region-as-coding-system
3280 gnus-agent-file-coding-system
3281 (point-min) (point-max) file nil 'silent)
3283 ;; Update the group's article alist to include the newly
3284 ;; fetched articles.
3285 (gnus-agent-load-alist group)
3286 (gnus-agent-save-alist group uncached-articles nil)
3289 ;; Copy the temp buffer to the nntp-server-buffer
3290 (set-buffer nntp-server-buffer)
3292 (insert-buffer-substring gnus-agent-overview-buffer)))
3295 (not (numberp fetch-old)))
3296 t ; Don't remove anything.
3297 (nnheader-nov-delete-outside-range
3298 (if fetch-old (max 1 (- (car articles) fetch-old))
3300 (car (last articles)))
3305 (defun gnus-agent-request-article (article group)
3306 "Retrieve ARTICLE in GROUP from the agent cache."
3307 (when (and gnus-agent
3308 (or gnus-agent-cache
3311 (let* ((gnus-command-method (gnus-find-method-for-group group))
3312 (file (gnus-agent-article-name (number-to-string article) group))
3313 (buffer-read-only nil))
3314 (when (and (file-exists-p file)
3315 (> (nth 7 (file-attributes file)) 0))
3317 (gnus-kill-all-overlays)
3318 (insert-file-contents-as-coding-system gnus-cache-coding-system file)
3321 (defun gnus-agent-regenerate-group (group &optional reread)
3323 If REREAD is t, all articles in the .overview are marked as unread.
3324 If REREAD is not nil, downloaded articles are marked as unread."
3326 (list (let ((def (or (gnus-group-group-name)
3327 gnus-newsgroup-name)))
3328 (let ((select (read-string (if def
3329 (concat "Group Name ("
3332 (if (and (equal "" select)
3337 (while (let ((c (read-char-exclusive
3338 "Mark as unread: (n)one / (a)ll / all (d)ownloaded articles? (n)"
3340 (cond ((or (eq c ?\r) (eq c ?n) (eq c ?N))
3342 ((or (eq c ?a) (eq c ?A))
3344 ((or (eq c ?d) (eq c ?D))
3345 (throw 'mark 'some)))
3346 (message "Ignoring unexpected input")
3351 (gnus-message 5 "Regenerating in %s" group)
3352 (let* ((gnus-command-method (or gnus-command-method
3353 (gnus-find-method-for-group group)))
3354 (file (gnus-agent-article-name ".overview" group))
3355 (dir (file-name-directory file))
3357 (downloaded (if (file-exists-p dir)
3358 (sort (mapcar (lambda (name) (string-to-int name))
3359 (directory-files dir nil "^[0-9]+$" t))
3361 (progn (gnus-make-directory dir) nil)))
3366 (mm-with-unibyte-buffer
3367 (if (file-exists-p file)
3368 (let ((nnheader-file-coding-system
3369 gnus-agent-file-coding-system))
3370 (nnheader-insert-file-contents file)))
3371 (set-buffer-modified-p nil)
3373 ;; Load the article IDs found in the overview file. As a
3374 ;; side-effect, validate the file contents.
3378 (goto-char (point-min))
3379 (while (< (point) (point-max))
3380 (cond ((and (looking-at "[0-9]+\t")
3381 (<= (- (match-end 0) (match-beginning 0)) 9))
3382 (push (read (current-buffer)) nov-arts)
3384 (let ((l1 (car nov-arts))
3385 (l2 (cadr nov-arts)))
3389 (gnus-message 3 "gnus-agent-regenerate-group: NOV\
3390 entries are NOT in ascending order.")
3391 ;; Don't sort now as I haven't verified
3392 ;; that every line begins with a number
3396 (gnus-message 4 "gnus-agent-regenerate-group: NOV\
3397 entries contained duplicate of article %s. Duplicate deleted." l1)
3399 (setq nov-arts (cdr nov-arts))))))
3401 (gnus-message 1 "gnus-agent-regenerate-group: NOV\
3402 entries contained line that did not begin with an article number. Deleted\
3404 (gnus-delete-line))))
3407 (gnus-message 5 "gnus-agent-regenerate-group: Sorting NOV\
3408 entries into ascending order.")
3409 (sort-numeric-fields 1 (point-min) (point-max))
3410 (setq nov-arts nil)))))
3411 (gnus-agent-check-overview-buffer)
3413 ;; Construct a new article alist whose nodes match every header
3414 ;; in the .overview file. As a side-effect, missing headers are
3415 ;; reconstructed from the downloaded article file.
3416 (while (or downloaded nov-arts)
3417 (cond ((and downloaded
3419 (> (car downloaded) (car nov-arts))))
3420 ;; This entry is missing from the overview file
3421 (gnus-message 3 "Regenerating NOV %s %d..." group
3423 (let ((file (concat dir (number-to-string (car downloaded)))))
3424 (mm-with-unibyte-buffer
3425 (nnheader-insert-file-contents file)
3426 (nnheader-remove-body)
3427 (setq header (nnheader-parse-naked-head)))
3428 (mail-header-set-number header (car downloaded))
3430 (let ((key (concat "^" (int-to-string (car nov-arts))
3432 (or (re-search-backward key nil t)
3433 (re-search-forward key))
3435 (goto-char (point-min)))
3436 (nnheader-insert-nov header))
3437 (setq nov-arts (cons (car downloaded) nov-arts)))
3438 ((eq (car downloaded) (car nov-arts))
3439 ;; This entry in the overview has been downloaded
3440 (push (cons (car downloaded)
3442 (nth 5 (file-attributes
3443 (concat dir (number-to-string
3444 (car downloaded))))))) alist)
3445 (setq downloaded (cdr downloaded))
3446 (setq nov-arts (cdr nov-arts)))
3448 ;; This entry in the overview has not been downloaded
3449 (push (cons (car nov-arts) nil) alist)
3450 (setq nov-arts (cdr nov-arts)))))
3452 ;; When gnus-agent-consider-all-articles is set,
3453 ;; gnus-agent-regenerate-group should NOT remove article IDs from
3454 ;; the alist. Those IDs serve as markers to indicate that an
3455 ;; attempt has been made to fetch that article's header.
3457 ;; When gnus-agent-consider-all-articles is NOT set,
3458 ;; gnus-agent-regenerate-group can remove the article ID of every
3459 ;; article (with the exception of the last ID in the list - it's
3460 ;; special) that no longer appears in the overview. In this
3461 ;; situtation, the last article ID in the list implies that it,
3462 ;; and every article ID preceeding it, have been fetched from the
3465 (if gnus-agent-consider-all-articles
3466 ;; Restore all article IDs that were not found in the overview file.
3467 (let* ((n (cons nil alist))
3469 (o (gnus-agent-load-alist group)))
3471 (let ((nID (caadr n))
3474 (setq n (setcdr n (list (list oID))))
3477 (setcdr n (cons (list oID) (cdr n)))
3483 (setq n (cdr n))))))
3484 (setq alist (cdr merged)))
3485 ;; Restore the last article ID if it is not already in the new alist
3486 (let ((n (last alist))
3487 (o (last (gnus-agent-load-alist group))))
3491 (push (cons (caar o) nil) alist))
3492 ((< (caar n) (caar o))
3493 (setcdr n (list (car o)))))))
3495 (let ((inhibit-quit t))
3496 (if (setq regenerated (buffer-modified-p))
3497 (write-region-as-coding-system
3498 gnus-agent-file-coding-system
3499 (point-min) (point-max) file nil 'silent))
3501 (setq regenerated (or regenerated
3502 (and reread gnus-agent-article-alist)
3503 (not (equal alist gnus-agent-article-alist))))
3505 (setq gnus-agent-article-alist alist)
3508 (gnus-agent-save-alist group)
3510 ;; I have to alter the group's active range NOW as
3511 ;; gnus-make-ascending-articles-unread will use it to
3512 ;; recalculate the number of unread articles in the group
3514 (let ((group (gnus-group-real-name group))
3515 (group-active (gnus-active group)))
3517 (let ((new-min (or (caar gnus-agent-article-alist)
3518 (car group-active)))
3519 (new-max (or (caar (last gnus-agent-article-alist))
3520 (cdr group-active))))
3522 (when (< new-min (car group-active))
3523 (setcar group-active new-min))
3525 (when (> new-max (cdr group-active))
3526 (setcdr group-active new-max))))))))
3528 (when (and reread gnus-agent-article-alist)
3529 (gnus-make-ascending-articles-unread
3531 (delq nil (mapcar (function (lambda (c)
3532 (cond ((eq reread t)
3536 gnus-agent-article-alist)))
3538 (when (gnus-buffer-live-p gnus-group-buffer)
3539 (gnus-group-update-group group t)
3542 (gnus-message 5 nil)
3546 (defun gnus-agent-regenerate (&optional clean reread)
3547 "Regenerate all agent covered files.
3548 If CLEAN, obsolete (ignore)."
3551 (gnus-message 4 "Regenerating Gnus agent files...")
3552 (dolist (gnus-command-method (gnus-agent-covered-methods))
3553 (dolist (group (gnus-groups-from-server gnus-command-method))
3554 (setq regenerated (or (gnus-agent-regenerate-group group reread)
3556 (gnus-message 4 "Regenerating Gnus agent files...done")
3560 (defun gnus-agent-go-online (&optional force)
3561 "Switch servers into online status."
3562 (interactive (list t))
3563 (dolist (server gnus-opened-servers)
3564 (when (eq (nth 1 server) 'offline)
3565 (if (if (eq force 'ask)
3567 (format "Switch %s:%s into online status? "
3568 (caar server) (cadar server)))
3570 (setcar (nthcdr 1 server) 'close)))))
3572 (defun gnus-agent-toggle-group-plugged (group)
3573 "Toggle the status of the server of the current group."
3574 (interactive (list (gnus-group-group-name)))
3575 (let* ((method (gnus-find-method-for-group group))
3576 (status (cadr (assoc method gnus-opened-servers))))
3577 (if (eq status 'offline)
3578 (gnus-server-set-status method 'closed)
3579 (gnus-close-server method)
3580 (gnus-server-set-status method 'offline))
3581 (message "Turn %s:%s from %s to %s." (car method) (cadr method)
3582 (if (eq status 'offline) 'offline 'online)
3583 (if (eq status 'offline) 'online 'offline))))
3585 (defun gnus-agent-group-covered-p (group)
3586 (gnus-agent-method-p (gnus-group-method group)))
3588 (add-hook 'gnus-group-prepare-hook
3592 (when (listp gnus-agent-expire-days)
3595 (gnus-message 1 "WARNING: gnus-agent-expire-days no longer\
3596 supports being set to a list.")(sleep-for 3)
3597 (gnus-message 1 "Change your configuration to set it to an\
3598 integer.")(sleep-for 3)
3599 (gnus-message 1 "I am now setting group parameters on each\
3600 group to match the configuration that the list offered.")
3603 (let ((groups (gnus-group-listed-groups)))
3605 (let* ((group (pop groups))
3606 (days gnus-agent-expire-days)
3609 (when (eq 0 (string-match
3612 (throw 'found (cadar days)))
3613 (setq days (cdr days)))
3616 (gnus-group-set-parameter group 'agent-days-until-old
3619 (let ((h gnus-group-prepare-hook))
3621 (let ((func (pop h)))
3622 (when (and (listp func)
3623 (eq (cadr (caddr func)) 'gnus-agent-do-once))
3624 (remove-hook 'gnus-group-prepare-hook func)
3627 (gnus-message 1 "I have finished setting group parameters on\
3628 each group. You may now customize your groups and/or topics to control the\
3631 (provide 'gnus-agent)
3633 ;;; gnus-agent.el ends here