1 ;;; gnus-agent.el --- unplugged support for Gnus
2 ;; Copyright (C) 1997,98,99 Free Software Foundation, Inc.
4 ;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
5 ;; This file is part of GNU Emacs.
7 ;; GNU Emacs is free software; you can redistribute it and/or modify
8 ;; it under the terms of the GNU General Public License as published by
9 ;; the Free Software Foundation; either version 2, or (at your option)
12 ;; GNU Emacs is distributed in the hope that it will be useful,
13 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
14 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 ;; GNU General Public License for more details.
17 ;; You should have received a copy of the GNU General Public License
18 ;; along with GNU Emacs; see the file COPYING. If not, write to the
19 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
20 ;; Boston, MA 02111-1307, USA.
32 (require 'gnus-score))
34 (defcustom gnus-agent-directory (nnheader-concat gnus-directory "agent/")
35 "Where the Gnus agent will store its files."
39 (defcustom gnus-agent-plugged-hook nil
40 "Hook run when plugging into the network."
44 (defcustom gnus-agent-unplugged-hook nil
45 "Hook run when unplugging from the network."
49 (defcustom gnus-agent-handle-level gnus-level-subscribed
50 "Groups on levels higher than this variable will be ignored by the Agent."
54 (defcustom gnus-agent-expire-days 7
55 "Read articles older than this will be expired."
59 (defcustom gnus-agent-expire-all nil
60 "If non-nil, also expire unread, ticked and dormant articles.
61 If nil, only read articles will be expired."
65 (defcustom gnus-agent-group-mode-hook nil
66 "Hook run in Agent group minor modes."
70 (defcustom gnus-agent-summary-mode-hook nil
71 "Hook run in Agent summary minor modes."
75 (defcustom gnus-agent-server-mode-hook nil
76 "Hook run in Agent summary minor modes."
80 ;;; Internal variables
82 (defvar gnus-agent-history-buffers nil)
83 (defvar gnus-agent-buffer-alist nil)
84 (defvar gnus-agent-article-alist nil)
85 (defvar gnus-agent-group-alist nil)
86 (defvar gnus-agent-covered-methods nil)
87 (defvar gnus-category-alist nil)
88 (defvar gnus-agent-current-history nil)
89 (defvar gnus-agent-overview-buffer nil)
90 (defvar gnus-category-predicate-cache nil)
91 (defvar gnus-category-group-cache nil)
92 (defvar gnus-agent-spam-hashtb nil)
93 (defvar gnus-agent-file-name nil)
94 (defvar gnus-agent-send-mail-function nil)
95 (defvar gnus-agent-file-coding-system 'raw-text)
97 (defconst gnus-agent-scoreable-headers
98 '("subject" "from" "date" "message-id" "references" "chars" "lines" "xref")
99 "Headers that are considered when scoring articles for download via the Agent.")
102 (defvar gnus-headers)
109 (defun gnus-open-agent ()
111 (gnus-agent-read-servers)
113 (gnus-agent-create-buffer)
114 (add-hook 'gnus-group-mode-hook 'gnus-agent-mode)
115 (add-hook 'gnus-summary-mode-hook 'gnus-agent-mode)
116 (add-hook 'gnus-server-mode-hook 'gnus-agent-mode))
118 (defun gnus-agent-create-buffer ()
119 (if (gnus-buffer-live-p gnus-agent-overview-buffer)
121 (setq gnus-agent-overview-buffer
122 (gnus-get-buffer-create " *Gnus agent overview*"))
123 (with-current-buffer gnus-agent-overview-buffer
124 (mm-enable-multibyte))
127 (gnus-add-shutdown 'gnus-close-agent 'gnus)
129 (defun gnus-close-agent ()
130 (setq gnus-agent-covered-methods nil
131 gnus-category-predicate-cache nil
132 gnus-category-group-cache nil
133 gnus-agent-spam-hashtb nil)
134 (gnus-kill-buffer gnus-agent-overview-buffer))
137 ;;; Utility functions
140 (defun gnus-agent-read-file (file)
141 "Load FILE and do a `read' there."
144 (nnheader-insert-file-contents file)
145 (goto-char (point-min))
146 (read (current-buffer)))))
148 (defsubst gnus-agent-method ()
149 (concat (symbol-name (car gnus-command-method)) "/"
150 (if (equal (cadr gnus-command-method) "")
152 (cadr gnus-command-method))))
154 (defsubst gnus-agent-directory ()
155 "Path of the Gnus agent directory."
156 (nnheader-concat gnus-agent-directory
157 (nnheader-translate-file-chars (gnus-agent-method)) "/"))
159 (defun gnus-agent-lib-file (file)
160 "The full path of the Gnus agent library FILE."
161 (concat (gnus-agent-directory) "agent.lib/" file))
163 ;;; Fetching setup functions.
165 (defun gnus-agent-start-fetch ()
166 "Initialize data structures for efficient fetching."
167 (gnus-agent-open-history)
168 (setq gnus-agent-current-history (gnus-agent-history-buffer))
169 (gnus-agent-create-buffer))
171 (defun gnus-agent-stop-fetch ()
172 "Save all data structures and clean up."
173 (gnus-agent-save-history)
174 (gnus-agent-close-history)
175 (setq gnus-agent-spam-hashtb nil)
177 (set-buffer nntp-server-buffer)
180 (defmacro gnus-agent-with-fetch (&rest forms)
184 (gnus-agent-start-fetch)
186 (gnus-agent-stop-fetch)))
188 (put 'gnus-agent-with-fetch 'lisp-indent-function 0)
189 (put 'gnus-agent-with-fetch 'edebug-form-spec '(body))
195 (defvar gnus-agent-mode-hook nil
196 "Hook run when installing agent mode.")
198 (defvar gnus-agent-mode nil)
199 (defvar gnus-agent-mode-status '(gnus-agent-mode " Plugged"))
201 (defun gnus-agent-mode ()
202 "Minor mode for providing a agent support in Gnus buffers."
203 (let* ((buffer (progn (string-match "^gnus-\\(.*\\)-mode$"
204 (symbol-name major-mode))
205 (match-string 1 (symbol-name major-mode))))
206 (mode (intern (format "gnus-agent-%s-mode" buffer))))
207 (set (make-local-variable 'gnus-agent-mode) t)
209 (set (make-local-variable mode) t)
211 (when (gnus-visual-p 'agent-menu 'menu)
212 (funcall (intern (format "gnus-agent-%s-make-menu-bar" buffer))))
213 (unless (assq 'gnus-agent-mode minor-mode-alist)
214 (push gnus-agent-mode-status minor-mode-alist))
215 (unless (assq mode minor-mode-map-alist)
216 (push (cons mode (symbol-value (intern (format "gnus-agent-%s-mode-map"
218 minor-mode-map-alist))
219 (when (eq major-mode 'gnus-group-mode)
220 (gnus-agent-toggle-plugged gnus-plugged))
221 (gnus-run-hooks 'gnus-agent-mode-hook
222 (intern (format "gnus-agent-%s-mode-hook" buffer)))))
224 (defvar gnus-agent-group-mode-map (make-sparse-keymap))
225 (gnus-define-keys gnus-agent-group-mode-map
226 "Ju" gnus-agent-fetch-groups
227 "Jc" gnus-enter-category-buffer
228 "Jj" gnus-agent-toggle-plugged
229 "Js" gnus-agent-fetch-session
230 "JS" gnus-group-send-drafts
231 "Ja" gnus-agent-add-group
232 "Jr" gnus-agent-remove-group)
234 (defun gnus-agent-group-make-menu-bar ()
235 (unless (boundp 'gnus-agent-group-menu)
237 gnus-agent-group-menu gnus-agent-group-mode-map ""
239 ["Toggle plugged" gnus-agent-toggle-plugged t]
240 ["List categories" gnus-enter-category-buffer t]
241 ["Send drafts" gnus-group-send-drafts gnus-plugged]
243 ["All" gnus-agent-fetch-session gnus-plugged]
244 ["Group" gnus-agent-fetch-group gnus-plugged])))))
246 (defvar gnus-agent-summary-mode-map (make-sparse-keymap))
247 (gnus-define-keys gnus-agent-summary-mode-map
248 "Jj" gnus-agent-toggle-plugged
249 "J#" gnus-agent-mark-article
250 "J\M-#" gnus-agent-unmark-article
251 "@" gnus-agent-toggle-mark
252 "Jc" gnus-agent-catchup)
254 (defun gnus-agent-summary-make-menu-bar ()
255 (unless (boundp 'gnus-agent-summary-menu)
257 gnus-agent-summary-menu gnus-agent-summary-mode-map ""
259 ["Toggle plugged" gnus-agent-toggle-plugged t]
260 ["Mark as downloadable" gnus-agent-mark-article t]
261 ["Unmark as downloadable" gnus-agent-unmark-article t]
262 ["Toggle mark" gnus-agent-toggle-mark t]
263 ["Catchup undownloaded" gnus-agent-catchup t]))))
265 (defvar gnus-agent-server-mode-map (make-sparse-keymap))
266 (gnus-define-keys gnus-agent-server-mode-map
267 "Jj" gnus-agent-toggle-plugged
268 "Ja" gnus-agent-add-server
269 "Jr" gnus-agent-remove-server)
271 (defun gnus-agent-server-make-menu-bar ()
272 (unless (boundp 'gnus-agent-server-menu)
274 gnus-agent-server-menu gnus-agent-server-mode-map ""
276 ["Toggle plugged" gnus-agent-toggle-plugged t]
277 ["Add" gnus-agent-add-server t]
278 ["Remove" gnus-agent-remove-server t]))))
280 (defun gnus-agent-toggle-plugged (plugged)
281 "Toggle whether Gnus is unplugged or not."
282 (interactive (list (not gnus-plugged)))
285 (setq gnus-plugged plugged)
286 (gnus-run-hooks 'gnus-agent-plugged-hook)
287 (setcar (cdr gnus-agent-mode-status) " Plugged"))
288 (gnus-agent-close-connections)
289 (setq gnus-plugged plugged)
290 (gnus-run-hooks 'gnus-agent-unplugged-hook)
291 (setcar (cdr gnus-agent-mode-status) " Unplugged"))
292 (set-buffer-modified-p t))
294 (defun gnus-agent-close-connections ()
295 "Close all methods covered by the Gnus agent."
296 (let ((methods gnus-agent-covered-methods))
298 (gnus-close-server (pop methods)))))
301 (defun gnus-unplugged ()
302 "Start Gnus unplugged."
304 (setq gnus-plugged nil)
308 (defun gnus-plugged ()
309 "Start Gnus plugged."
311 (setq gnus-plugged t)
315 (defun gnus-agentize ()
316 "Allow Gnus to be an offline newsreader.
317 The normal usage of this command is to put the following as the
318 last form in your `.gnus.el' file:
322 This will modify the `gnus-before-startup-hook', `gnus-post-method',
323 and `message-send-mail-function' variables, and install the Gnus
324 agent minor mode in all Gnus buffers."
327 (add-hook 'gnus-setup-news-hook 'gnus-agent-queue-setup)
328 (unless gnus-agent-send-mail-function
329 (setq gnus-agent-send-mail-function message-send-mail-function
330 message-send-mail-function 'gnus-agent-send-mail))
331 (unless gnus-agent-covered-methods
332 (setq gnus-agent-covered-methods (list gnus-select-method))))
334 (defun gnus-agent-queue-setup ()
335 "Make sure the queue group exists."
336 (unless (gnus-gethash "nndraft:queue" gnus-newsrc-hashtb)
337 (gnus-request-create-group "queue" '(nndraft ""))
338 (let ((gnus-level-default-subscribed 1))
339 (gnus-subscribe-group "nndraft:queue" nil '(nndraft "")))
340 (gnus-group-set-parameter
341 "nndraft:queue" 'gnus-dummy '((gnus-draft-mode)))))
343 (defun gnus-agent-send-mail ()
345 (funcall gnus-agent-send-mail-function)
346 (goto-char (point-min))
348 (concat "^" (regexp-quote mail-header-separator) "\n"))
350 (gnus-agent-insert-meta-information 'mail)
351 (gnus-request-accept-article "nndraft:queue" nil t t)))
353 (defun gnus-agent-insert-meta-information (type &optional method)
354 "Insert meta-information into the message that says how it's to be posted.
355 TYPE can be either `mail' or `news'. If the latter METHOD can
358 (message-remove-header gnus-agent-meta-information-header)
359 (goto-char (point-min))
360 (insert gnus-agent-meta-information-header ": "
361 (symbol-name type) " " (format "%S" method)
364 (while (search-backward "\n" nil t)
365 (replace-match "\\n" t t))))
368 ;;; Group mode commands
371 (defun gnus-agent-fetch-groups (n)
372 "Put all new articles in the current groups into the Agent."
375 (error "Groups can't be fetched when Gnus is unplugged"))
376 (gnus-group-iterate n 'gnus-agent-fetch-group))
378 (defun gnus-agent-fetch-group (group)
379 "Put all new articles in GROUP into the Agent."
380 (interactive (list (gnus-group-group-name)))
382 (error "Groups can't be fetched when Gnus is unplugged"))
384 (error "No group on the current line"))
385 (let ((gnus-command-method (gnus-find-method-for-group group)))
386 (gnus-agent-with-fetch
387 (gnus-agent-fetch-group-1 group gnus-command-method)
388 (gnus-message 5 "Fetching %s...done" group))))
390 (defun gnus-agent-add-group (category arg)
391 "Add the current group to an agent category."
397 (mapcar (lambda (cat) (list (symbol-name (car cat))))
401 (let ((cat (assq category gnus-category-alist))
403 (gnus-group-iterate arg
405 (when (cadddr (setq c (gnus-group-category group)))
406 (setf (cadddr c) (delete group (cadddr c))))
407 (push group groups)))
408 (setf (cadddr cat) (nconc (cadddr cat) groups))
409 (gnus-category-write)))
411 (defun gnus-agent-remove-group (arg)
412 "Remove the current group from its agent category, if any."
415 (gnus-group-iterate arg
417 (when (cadddr (setq c (gnus-group-category group)))
418 (setf (cadddr c) (delete group (cadddr c))))))
419 (gnus-category-write)))
422 ;;; Server mode commands
425 (defun gnus-agent-add-server (server)
426 "Enroll SERVER in the agent program."
427 (interactive (list (gnus-server-server-name)))
429 (error "No server on the current line"))
430 (let ((method (gnus-server-get-method nil (gnus-server-server-name))))
431 (when (member method gnus-agent-covered-methods)
432 (error "Server already in the agent program"))
433 (push method gnus-agent-covered-methods)
434 (gnus-agent-write-servers)
435 (message "Entered %s into the Agent" server)))
437 (defun gnus-agent-remove-server (server)
438 "Remove SERVER from the agent program."
439 (interactive (list (gnus-server-server-name)))
441 (error "No server on the current line"))
442 (let ((method (gnus-server-get-method nil (gnus-server-server-name))))
443 (unless (member method gnus-agent-covered-methods)
444 (error "Server not in the agent program"))
445 (setq gnus-agent-covered-methods
446 (delete method gnus-agent-covered-methods))
447 (gnus-agent-write-servers)
448 (message "Removed %s from the agent" server)))
450 (defun gnus-agent-read-servers ()
451 "Read the alist of covered servers."
452 (setq gnus-agent-covered-methods
453 (gnus-agent-read-file
454 (nnheader-concat gnus-agent-directory "lib/servers"))))
456 (defun gnus-agent-write-servers ()
457 "Write the alist of covered servers."
458 (gnus-make-directory (nnheader-concat gnus-agent-directory "lib"))
459 (with-temp-file (nnheader-concat gnus-agent-directory "lib/servers")
460 (prin1 gnus-agent-covered-methods (current-buffer))))
466 (defun gnus-agent-mark-article (n &optional unmark)
467 "Mark the next N articles as downloadable.
468 If N is negative, mark backward instead. If UNMARK is non-nil, remove
469 the mark instead. The difference between N and the actual number of
470 articles marked is returned."
472 (let ((backward (< n 0))
477 (gnus-summary-set-agent-mark
478 (gnus-summary-article-number) unmark)
479 (zerop (gnus-summary-next-subject (if backward -1 1) nil t))))
482 (gnus-message 7 "No more articles"))
483 (gnus-summary-recenter)
484 (gnus-summary-position-point)
487 (defun gnus-agent-unmark-article (n)
488 "Remove the downloadable mark from the next N articles.
489 If N is negative, unmark backward instead. The difference between N and
490 the actual number of articles unmarked is returned."
492 (gnus-agent-mark-article n t))
494 (defun gnus-agent-toggle-mark (n)
495 "Toggle the downloadable mark from the next N articles.
496 If N is negative, toggle backward instead. The difference between N and
497 the actual number of articles toggled is returned."
499 (gnus-agent-mark-article n 'toggle))
501 (defun gnus-summary-set-agent-mark (article &optional unmark)
502 "Mark ARTICLE as downloadable."
503 (let ((unmark (if (and (not (null unmark)) (not (eq t unmark)))
504 (memq article gnus-newsgroup-downloadable)
508 (setq gnus-newsgroup-downloadable
509 (delq article gnus-newsgroup-downloadable))
510 (push article gnus-newsgroup-undownloaded))
511 (setq gnus-newsgroup-undownloaded
512 (delq article gnus-newsgroup-undownloaded))
513 (push article gnus-newsgroup-downloadable))
514 (gnus-summary-update-mark
515 (if unmark gnus-undownloaded-mark gnus-downloadable-mark)
518 (defun gnus-agent-get-undownloaded-list ()
519 "Mark all unfetched articles as read."
520 (let ((gnus-command-method (gnus-find-method-for-group gnus-newsgroup-name)))
521 (when (and (not gnus-plugged)
522 (gnus-agent-method-p gnus-command-method))
523 (gnus-agent-load-alist gnus-newsgroup-name)
524 ;; First mark all undownloaded articles as undownloaded.
525 (let ((articles (append gnus-newsgroup-unreads
526 gnus-newsgroup-marked
527 gnus-newsgroup-dormant))
529 (while (setq article (pop articles))
530 (unless (or (cdr (assq article gnus-agent-article-alist))
531 (memq article gnus-newsgroup-downloadable)
532 (memq article gnus-newsgroup-cached))
533 (push article gnus-newsgroup-undownloaded))))
534 ;; Then mark downloaded downloadable as not-downloadable,
535 ;; if you get my drift.
536 (let ((articles gnus-newsgroup-downloadable)
538 (while (setq article (pop articles))
539 (when (cdr (assq article gnus-agent-article-alist))
540 (setq gnus-newsgroup-downloadable
541 (delq article gnus-newsgroup-downloadable))))))))
543 (defun gnus-agent-catchup ()
544 "Mark all undownloaded articles as read."
547 (while gnus-newsgroup-undownloaded
548 (gnus-summary-mark-article
549 (pop gnus-newsgroup-undownloaded) gnus-catchup-mark)))
550 (gnus-summary-position-point))
553 ;;; Internal functions
556 (defun gnus-agent-save-active (method)
557 (gnus-agent-save-active-1 method 'gnus-active-to-gnus-format))
559 (defun gnus-agent-save-active-1 (method function)
560 (when (gnus-agent-method-p method)
561 (let* ((gnus-command-method method)
562 (new (gnus-make-hashtable (count-lines (point-min) (point-max))))
563 (file (gnus-agent-lib-file "active")))
564 (funcall function nil new)
565 (gnus-agent-write-active file new)
567 (insert-file-contents-literally file))))
569 (defun gnus-agent-write-active (file new)
570 (let ((orig (gnus-make-hashtable (count-lines (point-min) (point-max))))
571 (file (gnus-agent-lib-file "active"))
573 (when (file-exists-p file)
575 (insert-file-contents file)
576 (gnus-active-to-gnus-format nil orig))
579 (when (and sym (boundp sym))
580 (if (and (boundp (setq osym (intern (symbol-name sym) orig)))
581 (setq elem (symbol-value osym)))
582 (setcdr elem (cdr (symbol-value sym)))
583 (set (intern (symbol-name sym) orig) (symbol-value sym)))))
585 (gnus-make-directory (file-name-directory file))
586 (let ((coding-system-for-write gnus-agent-file-coding-system))
587 (gnus-write-active-file file orig))))
589 (defun gnus-agent-save-groups (method)
590 (gnus-agent-save-active-1 method 'gnus-groups-to-gnus-format))
592 (defun gnus-agent-save-group-info (method group active)
593 (when (gnus-agent-method-p method)
594 (let* ((gnus-command-method method)
595 (file (gnus-agent-lib-file "active")))
596 (gnus-make-directory (file-name-directory file))
598 (when (file-exists-p file)
599 (nnheader-insert-file-contents file))
600 (goto-char (point-min))
601 (when (re-search-forward
602 (concat "^" (regexp-quote group) " ") nil t)
604 (insert group " " (number-to-string (cdr active)) " "
605 (number-to-string (car active)) " y\n")))))
607 (defun gnus-agent-group-path (group)
608 "Translate GROUP into a path."
609 (if nnmail-use-long-file-names
610 (gnus-group-real-name group)
611 (nnheader-replace-chars-in-string
612 (nnheader-translate-file-chars (gnus-group-real-name group))
617 (defun gnus-agent-method-p (method)
618 "Say whether METHOD is covered by the agent."
619 (member method gnus-agent-covered-methods))
621 (defun gnus-agent-get-function (method)
622 (if (and (not gnus-plugged)
623 (gnus-agent-method-p method))
629 ;;; History functions
631 (defun gnus-agent-history-buffer ()
632 (cdr (assoc (gnus-agent-method) gnus-agent-history-buffers)))
634 (defun gnus-agent-open-history ()
636 (push (cons (gnus-agent-method)
637 (set-buffer (gnus-get-buffer-create
638 (format " *Gnus agent %s history*"
639 (gnus-agent-method)))))
640 gnus-agent-history-buffers)
643 (let ((file (gnus-agent-lib-file "history")))
644 (when (file-exists-p file)
646 (set (make-local-variable 'gnus-agent-file-name) file))))
648 (defun gnus-agent-save-history ()
650 (set-buffer gnus-agent-current-history)
651 (gnus-make-directory (file-name-directory gnus-agent-file-name))
652 (let ((coding-system-for-write gnus-agent-file-coding-system))
653 (write-region (1+ (point-min)) (point-max)
654 gnus-agent-file-name nil 'silent))))
656 (defun gnus-agent-close-history ()
657 (when (gnus-buffer-live-p gnus-agent-current-history)
658 (kill-buffer gnus-agent-current-history)
659 (setq gnus-agent-history-buffers
660 (delq (assoc (gnus-agent-method) gnus-agent-history-buffers)
661 gnus-agent-history-buffers))))
663 (defun gnus-agent-enter-history (id group-arts date)
665 (set-buffer gnus-agent-current-history)
666 (goto-char (point-max))
667 (insert id "\t" (number-to-string date) "\t")
669 (insert (caar group-arts) " " (number-to-string (cdr (pop group-arts)))
673 (defun gnus-agent-article-in-history-p (id)
675 (set-buffer (gnus-agent-history-buffer))
676 (goto-char (point-min))
677 (search-forward (concat "\n" id "\t") nil t)))
679 (defun gnus-agent-history-path (id)
681 (set-buffer (gnus-agent-history-buffer))
682 (goto-char (point-min))
683 (when (search-forward (concat "\n" id "\t") nil t)
684 (let ((method (gnus-agent-method)))
686 (while (not (numberp (setq group (read (current-buffer)))))
687 (push (concat method "/" group) paths))
688 (nreverse paths))))))
694 (defun gnus-agent-fetch-articles (group articles)
695 "Fetch ARTICLES from GROUP and put them into the Agent."
697 ;; Prune off articles that we have already fetched.
699 (cdr (assq (car articles) gnus-agent-article-alist)))
701 (let ((arts articles))
703 (if (cdr (assq (cadr arts) gnus-agent-article-alist))
704 (setcdr arts (cddr arts))
705 (setq arts (cdr arts)))))
708 (gnus-agent-directory)
709 (gnus-agent-group-path group) "/"))
710 (date (time-to-days (current-time)))
713 (gnus-make-directory dir)
714 (gnus-message 7 "Fetching articles for %s..." group)
715 ;; Fetch the articles from the backend.
716 (if (gnus-check-backend-function 'retrieve-articles group)
717 (setq pos (gnus-retrieve-articles articles group))
720 (while (setq article (pop articles))
721 (when (gnus-request-article article group)
722 (goto-char (point-max))
723 (push (cons article (point)) pos)
724 (insert-buffer-substring nntp-server-buffer)))
725 (copy-to-buffer nntp-server-buffer (point-min) (point-max))
726 (setq pos (nreverse pos)))))
727 ;; Then save these articles into the Agent.
729 (set-buffer nntp-server-buffer)
731 (narrow-to-region (cdar pos) (or (cdadr pos) (point-max)))
732 (goto-char (point-min))
733 (when (search-forward "\n\n" nil t)
734 (when (search-backward "\nXrefs: " nil t)
735 ;; Handle crossposting.
736 (skip-chars-forward "^ ")
737 (skip-chars-forward " ")
739 (while (looking-at "\\([^: \n]+\\):\\([0-9]+\\) +")
740 (push (cons (buffer-substring (match-beginning 1)
742 (buffer-substring (match-beginning 2)
745 (goto-char (match-end 0)))
746 (gnus-agent-crosspost crosses (caar pos))))
747 (goto-char (point-min))
748 (if (not (re-search-forward "^Message-ID: *<\\([^>\n]+\\)>" nil t))
749 (setq id "No-Message-ID-in-article")
750 (setq id (buffer-substring (match-beginning 1) (match-end 1))))
751 (let ((coding-system-for-write
752 gnus-agent-file-coding-system))
753 (write-region (point-min) (point-max)
754 (concat dir (number-to-string (caar pos)))
756 (when (setq elem (assq (caar pos) gnus-agent-article-alist))
758 (gnus-agent-enter-history
759 id (or crosses (list (cons group (caar pos)))) date)
762 (gnus-agent-save-alist group)))))
764 (defun gnus-agent-crosspost (crosses article)
765 (let (gnus-agent-article-alist group alist beg end)
767 (set-buffer gnus-agent-overview-buffer)
768 (when (nnheader-find-nov-line article)
771 (setq end (progn (forward-line 1) (point)))))
773 (setq group (caar crosses))
774 (unless (setq alist (assoc group gnus-agent-group-alist))
775 (push (setq alist (list group (gnus-agent-load-alist (caar crosses))))
776 gnus-agent-group-alist))
777 (setcdr alist (cons (cons (cdar crosses) t) (cdr alist)))
779 (set-buffer (gnus-get-buffer-create (format " *Gnus agent overview %s*"
781 (when (= (point-max) (point-min))
782 (push (cons group (current-buffer)) gnus-agent-buffer-alist)
784 (nnheader-insert-file-contents
785 (gnus-agent-article-name ".overview" group))))
786 (nnheader-find-nov-line (string-to-number (cdar crosses)))
787 (insert (string-to-number (cdar crosses)))
788 (insert-buffer-substring gnus-agent-overview-buffer beg end))
791 (defun gnus-agent-flush-cache ()
793 (while gnus-agent-buffer-alist
794 (set-buffer (cdar gnus-agent-buffer-alist))
795 (let ((coding-system-for-write
796 gnus-agent-file-coding-system))
797 (write-region (point-min) (point-max)
798 (gnus-agent-article-name ".overview"
799 (caar gnus-agent-buffer-alist))
801 (pop gnus-agent-buffer-alist))
802 (while gnus-agent-group-alist
803 (with-temp-file (caar gnus-agent-group-alist)
804 (princ (cdar gnus-agent-group-alist))
806 (pop gnus-agent-group-alist))))
808 (defun gnus-agent-fetch-headers (group &optional force)
809 (let ((articles (gnus-list-of-unread-articles group))
810 (gnus-decode-encoded-word-function 'identity)
811 (file (gnus-agent-article-name ".overview" group)))
812 ;; add article with marks to list of article headers we want to fetch
813 (dolist (arts (gnus-info-marks (gnus-get-info group)))
814 (setq articles (union (gnus-uncompress-sequence (cdr arts))
816 (setq articles (sort articles '<))
817 ;; remove known articles
818 (when (gnus-agent-load-alist group)
819 (setq articles (gnus-sorted-intersection
821 (gnus-uncompress-range
822 (cons (1+ (caar (last gnus-agent-article-alist)))
823 (cdr (gnus-active group)))))))
825 (gnus-make-directory (nnheader-translate-file-chars
826 (file-name-directory file)))
828 (gnus-message 7 "Fetching headers for %s..." group)
830 (set-buffer nntp-server-buffer)
831 (unless (eq 'nov (gnus-retrieve-headers articles group))
832 (nnvirtual-convert-headers))
833 ;; Save these headers for later processing.
834 (copy-to-buffer gnus-agent-overview-buffer (point-min) (point-max))
835 (when (file-exists-p file)
836 (gnus-agent-braid-nov group articles file))
837 (let ((coding-system-for-write
838 gnus-agent-file-coding-system))
839 (write-region (point-min) (point-max) file nil 'silent))
840 (gnus-agent-save-alist group articles nil)
841 (gnus-agent-enter-history
842 "last-header-fetched-for-session"
843 (list (cons group (nth (- (length articles) 1) articles)))
844 (time-to-days (current-time)))
847 (defsubst gnus-agent-copy-nov-line (article)
849 (set-buffer gnus-agent-overview-buffer)
851 (if (eq article (read (current-buffer)))
852 (setq e (progn (forward-line 1) (point)))
856 (set-buffer nntp-server-buffer)
857 (insert-buffer-substring gnus-agent-overview-buffer b e)))
859 (defun gnus-agent-braid-nov (group articles file)
860 (set-buffer gnus-agent-overview-buffer)
861 (goto-char (point-min))
862 (set-buffer nntp-server-buffer)
864 (nnheader-insert-file-contents file)
865 (goto-char (point-max))
866 (if (or (= (point-min) (point-max))
869 (< (read (current-buffer)) (car articles))))
870 ;; We have only headers that are after the older headers,
871 ;; so we just append them.
873 (goto-char (point-max))
874 (insert-buffer-substring gnus-agent-overview-buffer))
875 ;; We do it the hard way.
876 (nnheader-find-nov-line (car articles))
877 (gnus-agent-copy-nov-line (car articles))
881 (while (and (not (eobp))
882 (< (read (current-buffer)) (car articles)))
886 (gnus-agent-copy-nov-line (car articles))
887 (setq articles (cdr articles))))
890 (set-buffer gnus-agent-overview-buffer)
893 (set-buffer nntp-server-buffer)
894 (insert-buffer-substring gnus-agent-overview-buffer b e)))))
896 (defun gnus-agent-load-alist (group &optional dir)
897 "Load the article-state alist for GROUP."
898 (setq gnus-agent-article-alist
899 (gnus-agent-read-file
901 (concat dir ".agentview")
902 (gnus-agent-article-name ".agentview" group)))))
904 (defun gnus-agent-save-alist (group &optional articles state dir)
905 "Save the article-state alist for GROUP."
906 (with-temp-file (if dir
907 (concat dir ".agentview")
908 (gnus-agent-article-name ".agentview" group))
909 (princ (setq gnus-agent-article-alist
910 (nconc gnus-agent-article-alist
911 (mapcar (lambda (article) (cons article state))
916 (defun gnus-agent-article-name (article group)
917 (concat (gnus-agent-directory) (gnus-agent-group-path group) "/"
918 (if (stringp article) article (string-to-number article))))
921 (defun gnus-agent-batch-fetch ()
922 "Start Gnus and fetch session."
925 (gnus-agent-fetch-session)
928 (defun gnus-agent-fetch-session ()
929 "Fetch all articles and headers that are eligible for fetching."
931 (unless gnus-agent-covered-methods
932 (error "No servers are covered by the Gnus agent"))
934 (error "Can't fetch articles while Gnus is unplugged"))
935 (let ((methods gnus-agent-covered-methods)
936 groups group gnus-command-method)
939 (setq gnus-command-method (car methods))
940 (when (or (gnus-server-opened gnus-command-method)
941 (gnus-open-server gnus-command-method))
942 (setq groups (gnus-groups-from-server (car methods)))
943 (gnus-agent-with-fetch
944 (while (setq group (pop groups))
945 (when (<= (gnus-group-level group) gnus-agent-handle-level)
946 (gnus-agent-fetch-group-1 group gnus-command-method)))))
948 (gnus-message 6 "Finished fetching articles into the Gnus agent"))))
950 (defun gnus-agent-fetch-group-1 (group method)
952 (let ((gnus-command-method method)
953 (gnus-newsgroup-name group)
954 gnus-newsgroup-dependencies gnus-newsgroup-headers
955 gnus-newsgroup-scored gnus-headers gnus-score
956 gnus-use-cache articles arts
957 category predicate info marks score-param)
959 (when (and (or (gnus-active group) (gnus-activate-group group))
960 (setq articles (gnus-agent-fetch-headers group))
962 ;; Parse them and see which articles we want to fetch.
963 (setq gnus-newsgroup-dependencies
964 (make-vector (length articles) 0))
965 ;; No need to call `gnus-get-newsgroup-headers-xover' with
966 ;; the entire .overview for group as we still have the just
967 ;; downloaded headers in `gnus-agent-overview-buffer'.
968 (let ((nntp-server-buffer gnus-agent-overview-buffer))
969 (setq gnus-newsgroup-headers
970 (gnus-get-newsgroup-headers-xover articles nil nil
972 ;; `gnus-agent-overview-buffer' may be killed for
973 ;; timeout reason. If so, recreate it.
974 (gnus-agent-create-buffer)))
975 (setq category (gnus-group-category group))
978 (or (gnus-group-find-parameter group 'agent-predicate t)
980 ;; Do we want to download everything, or nothing?
981 (if (or (eq (caaddr predicate) 'gnus-agent-true)
982 (eq (caaddr predicate) 'gnus-agent-false))
984 (setq arts (symbol-value
985 (cadr (assoc (caaddr predicate)
986 '((gnus-agent-true articles)
987 (gnus-agent-false nil))))))
988 ;; No, we need to decide what we want.
992 (gnus-group-find-parameter group 'agent-score t)
995 (require 'gnus-score)
996 (if (eq score-method 'file)
998 (gnus-score-load-files
999 (gnus-all-score-files group)))
1001 (while (setq list (car entries))
1002 (push (car list) score-file)
1003 (setq list (cdr list))
1005 (when (member (caar list)
1006 gnus-agent-scoreable-headers)
1007 (push (car list) score-file))
1008 (setq list (cdr list)))
1010 (append score-param (list (nreverse score-file)))
1011 score-file nil entries (cdr entries)))
1013 (if (stringp (car score-method))
1015 (list (list score-method)))))))
1017 (gnus-score-headers score-param))
1019 (while (setq gnus-headers (pop gnus-newsgroup-headers))
1021 (or (cdr (assq (mail-header-number gnus-headers)
1022 gnus-newsgroup-scored))
1023 gnus-summary-default-score))
1024 (when (funcall predicate)
1025 (push (mail-header-number gnus-headers)
1027 ;; Fetch the articles.
1029 (gnus-agent-fetch-articles group arts)))
1030 ;; Perhaps we have some additional articles to fetch.
1031 (setq arts (assq 'download (gnus-info-marks
1032 (setq info (gnus-get-info group)))))
1034 (gnus-agent-fetch-articles
1035 group (gnus-uncompress-range (cdr arts)))
1036 (setq marks (delq arts (gnus-info-marks info)))
1037 (gnus-info-set-marks info marks)
1039 (concat "(gnus-group-set-info '"
1040 (gnus-prin1-to-string info)
1044 ;;; Agent Category Mode
1047 (defvar gnus-category-mode-hook nil
1048 "Hook run in `gnus-category-mode' buffers.")
1050 (defvar gnus-category-line-format " %(%20c%): %g\n"
1051 "Format of category lines.")
1053 (defvar gnus-category-mode-line-format "Gnus: %%b"
1054 "The format specification for the category mode line.")
1056 (defvar gnus-agent-short-article 100
1057 "Articles that have fewer lines than this are short.")
1059 (defvar gnus-agent-long-article 200
1060 "Articles that have more lines than this are long.")
1062 (defvar gnus-agent-low-score 0
1063 "Articles that have a score lower than this have a low score.")
1065 (defvar gnus-agent-high-score 0
1066 "Articles that have a score higher than this have a high score.")
1069 ;;; Internal variables.
1071 (defvar gnus-category-buffer "*Agent Category*")
1073 (defvar gnus-category-line-format-alist
1074 `((?c gnus-tmp-name ?s)
1075 (?g gnus-tmp-groups ?d)))
1077 (defvar gnus-category-mode-line-format-alist
1078 `((?u user-defined ?s)))
1080 (defvar gnus-category-line-format-spec nil)
1081 (defvar gnus-category-mode-line-format-spec nil)
1083 (defvar gnus-category-mode-map nil)
1084 (put 'gnus-category-mode 'mode-class 'special)
1086 (unless gnus-category-mode-map
1087 (setq gnus-category-mode-map (make-sparse-keymap))
1088 (suppress-keymap gnus-category-mode-map)
1090 (gnus-define-keys gnus-category-mode-map
1091 "q" gnus-category-exit
1092 "k" gnus-category-kill
1093 "c" gnus-category-copy
1094 "a" gnus-category-add
1095 "p" gnus-category-edit-predicate
1096 "g" gnus-category-edit-groups
1097 "s" gnus-category-edit-score
1098 "l" gnus-category-list
1100 "\C-c\C-i" gnus-info-find-node
1101 "\C-c\C-b" gnus-bug))
1103 (defvar gnus-category-menu-hook nil
1104 "*Hook run after the creation of the menu.")
1106 (defun gnus-category-make-menu-bar ()
1107 (gnus-turn-off-edit-menu 'category)
1108 (unless (boundp 'gnus-category-menu)
1110 gnus-category-menu gnus-category-mode-map ""
1112 ["Add" gnus-category-add t]
1113 ["Kill" gnus-category-kill t]
1114 ["Copy" gnus-category-copy t]
1115 ["Edit predicate" gnus-category-edit-predicate t]
1116 ["Edit score" gnus-category-edit-score t]
1117 ["Edit groups" gnus-category-edit-groups t]
1118 ["Exit" gnus-category-exit t]))
1120 (gnus-run-hooks 'gnus-category-menu-hook)))
1122 (defun gnus-category-mode ()
1123 "Major mode for listing and editing agent categories.
1125 All normal editing commands are switched off.
1126 \\<gnus-category-mode-map>
1127 For more in-depth information on this mode, read the manual
1128 (`\\[gnus-info-find-node]').
1130 The following commands are available:
1132 \\{gnus-category-mode-map}"
1134 (when (gnus-visual-p 'category-menu 'menu)
1135 (gnus-category-make-menu-bar))
1136 (kill-all-local-variables)
1137 (gnus-simplify-mode-line)
1138 (setq major-mode 'gnus-category-mode)
1139 (setq mode-name "Category")
1140 (gnus-set-default-directory)
1141 (setq mode-line-process nil)
1142 (use-local-map gnus-category-mode-map)
1143 (buffer-disable-undo)
1144 (setq truncate-lines t)
1145 (setq buffer-read-only t)
1146 (gnus-run-hooks 'gnus-category-mode-hook))
1148 (defalias 'gnus-category-position-point 'gnus-goto-colon)
1150 (defun gnus-category-insert-line (category)
1151 (let* ((gnus-tmp-name (car category))
1152 (gnus-tmp-groups (length (cadddr category))))
1154 (gnus-add-text-properties
1158 (eval gnus-category-line-format-spec))
1159 (list 'gnus-category gnus-tmp-name))))
1161 (defun gnus-enter-category-buffer ()
1162 "Go to the Category buffer."
1164 (gnus-category-setup-buffer)
1165 (gnus-configure-windows 'category)
1166 (gnus-category-prepare))
1168 (defun gnus-category-setup-buffer ()
1169 (unless (get-buffer gnus-category-buffer)
1171 (set-buffer (gnus-get-buffer-create gnus-category-buffer))
1172 (gnus-category-mode))))
1174 (defun gnus-category-prepare ()
1175 (gnus-set-format 'category-mode)
1176 (gnus-set-format 'category t)
1177 (let ((alist gnus-category-alist)
1178 (buffer-read-only nil))
1181 (gnus-category-insert-line (pop alist)))
1182 (goto-char (point-min))
1183 (gnus-category-position-point)))
1185 (defun gnus-category-name ()
1186 (or (get-text-property (gnus-point-at-bol) 'gnus-category)
1187 (error "No category on the current line")))
1189 (defun gnus-category-read ()
1190 "Read the category alist."
1191 (setq gnus-category-alist
1192 (or (gnus-agent-read-file
1193 (nnheader-concat gnus-agent-directory "lib/categories"))
1194 (list (list 'default 'short nil nil)))))
1196 (defun gnus-category-write ()
1197 "Write the category alist."
1198 (setq gnus-category-predicate-cache nil
1199 gnus-category-group-cache nil)
1200 (gnus-make-directory (nnheader-concat gnus-agent-directory "lib"))
1201 (with-temp-file (nnheader-concat gnus-agent-directory "lib/categories")
1202 (prin1 gnus-category-alist (current-buffer))))
1204 (defun gnus-category-edit-predicate (category)
1205 "Edit the predicate for CATEGORY."
1206 (interactive (list (gnus-category-name)))
1207 (let ((info (assq category gnus-category-alist)))
1209 (cadr info) (format "Editing the predicate for category %s" category)
1210 `(lambda (predicate)
1211 (setf (cadr (assq ',category gnus-category-alist)) predicate)
1212 (gnus-category-write)
1213 (gnus-category-list)))))
1215 (defun gnus-category-edit-score (category)
1216 "Edit the score expression for CATEGORY."
1217 (interactive (list (gnus-category-name)))
1218 (let ((info (assq category gnus-category-alist)))
1221 (format "Editing the score expression for category %s" category)
1223 (setf (caddr (assq ',category gnus-category-alist)) groups)
1224 (gnus-category-write)
1225 (gnus-category-list)))))
1227 (defun gnus-category-edit-groups (category)
1228 "Edit the group list for CATEGORY."
1229 (interactive (list (gnus-category-name)))
1230 (let ((info (assq category gnus-category-alist)))
1232 (cadddr info) (format "Editing the group list for category %s" category)
1234 (setf (cadddr (assq ',category gnus-category-alist)) groups)
1235 (gnus-category-write)
1236 (gnus-category-list)))))
1238 (defun gnus-category-kill (category)
1239 "Kill the current category."
1240 (interactive (list (gnus-category-name)))
1241 (let ((info (assq category gnus-category-alist))
1242 (buffer-read-only nil))
1244 (gnus-category-write)
1245 (setq gnus-category-alist (delq info gnus-category-alist))))
1247 (defun gnus-category-copy (category to)
1248 "Copy the current category."
1249 (interactive (list (gnus-category-name) (intern (read-string "New name: "))))
1250 (let ((info (assq category gnus-category-alist)))
1251 (push (list to (gnus-copy-sequence (cadr info))
1252 (gnus-copy-sequence (caddr info)) nil)
1253 gnus-category-alist)
1254 (gnus-category-write)
1255 (gnus-category-list)))
1257 (defun gnus-category-add (category)
1258 "Create a new category."
1259 (interactive "SCategory name: ")
1260 (when (assq category gnus-category-alist)
1261 (error "Category %s already exists" category))
1262 (push (list category 'false nil nil)
1263 gnus-category-alist)
1264 (gnus-category-write)
1265 (gnus-category-list))
1267 (defun gnus-category-list ()
1268 "List all categories."
1270 (gnus-category-prepare))
1272 (defun gnus-category-exit ()
1273 "Return to the group buffer."
1275 (kill-buffer (current-buffer))
1276 (gnus-configure-windows 'group t))
1278 ;; To avoid having 8-bit characters in the source file.
1279 (defvar gnus-category-not (list '! 'not (intern (format "%c" 172))))
1281 (defvar gnus-category-predicate-alist
1282 '((spam . gnus-agent-spam-p)
1283 (short . gnus-agent-short-p)
1284 (long . gnus-agent-long-p)
1285 (low . gnus-agent-low-scored-p)
1286 (high . gnus-agent-high-scored-p)
1287 (true . gnus-agent-true)
1288 (false . gnus-agent-false))
1289 "Mapping from short score predicate symbols to predicate functions.")
1291 (defun gnus-agent-spam-p ()
1292 "Say whether an article is spam or not."
1293 (unless gnus-agent-spam-hashtb
1294 (setq gnus-agent-spam-hashtb (gnus-make-hashtable 1000)))
1295 (if (not (equal (mail-header-references gnus-headers) ""))
1297 (let ((string (gnus-simplify-subject (mail-header-subject gnus-headers))))
1299 (gnus-gethash string gnus-agent-spam-hashtb)
1300 (gnus-sethash string t gnus-agent-spam-hashtb)))))
1302 (defun gnus-agent-short-p ()
1303 "Say whether an article is short or not."
1304 (< (mail-header-lines gnus-headers) gnus-agent-short-article))
1306 (defun gnus-agent-long-p ()
1307 "Say whether an article is long or not."
1308 (> (mail-header-lines gnus-headers) gnus-agent-long-article))
1310 (defun gnus-agent-low-scored-p ()
1311 "Say whether an article has a low score or not."
1312 (< gnus-score gnus-agent-low-score))
1314 (defun gnus-agent-high-scored-p ()
1315 "Say whether an article has a high score or not."
1316 (> gnus-score gnus-agent-high-score))
1318 (defun gnus-category-make-function (cat)
1319 "Make a function from category CAT."
1320 `(lambda () ,(gnus-category-make-function-1 cat)))
1322 (defun gnus-agent-true ()
1326 (defun gnus-agent-false ()
1330 (defun gnus-category-make-function-1 (cat)
1331 "Make a function from category CAT."
1333 ;; Functions are just returned as is.
1335 (gnus-functionp cat))
1336 `(,(or (cdr (assq cat gnus-category-predicate-alist))
1338 ;; More complex category.
1341 ((memq (car cat) '(& and))
1343 ((memq (car cat) '(| or))
1345 ((memq (car cat) gnus-category-not)
1347 ,@(mapcar 'gnus-category-make-function-1 (cdr cat))))
1349 (error "Unknown category type: %s" cat))))
1351 (defun gnus-get-predicate (predicate)
1352 "Return the predicate for CATEGORY."
1353 (or (cdr (assoc predicate gnus-category-predicate-cache))
1354 (cdar (push (cons predicate
1355 (gnus-category-make-function predicate))
1356 gnus-category-predicate-cache))))
1358 (defun gnus-group-category (group)
1359 "Return the category GROUP belongs to."
1360 (unless gnus-category-group-cache
1361 (setq gnus-category-group-cache (gnus-make-hashtable 1000))
1362 (let ((cs gnus-category-alist)
1364 (while (setq cat (pop cs))
1365 (setq groups (cadddr cat))
1367 (gnus-sethash (pop groups) cat gnus-category-group-cache)))))
1368 (or (gnus-gethash group gnus-category-group-cache)
1369 (assq 'default gnus-category-alist)))
1371 (defun gnus-agent-expire ()
1372 "Expire all old articles."
1374 (let ((methods gnus-agent-covered-methods)
1375 (day (- (time-to-days (current-time)) gnus-agent-expire-days))
1376 gnus-command-method sym group articles
1377 history overview file histories elem art nov-file low info
1378 unreads marked article orig lowest highest)
1380 (setq overview (gnus-get-buffer-create " *expire overview*"))
1381 (while (setq gnus-command-method (pop methods))
1382 (when (file-exists-p (gnus-agent-lib-file "active"))
1384 (insert-file-contents (gnus-agent-lib-file "active"))
1385 (gnus-active-to-gnus-format
1387 (setq orig (gnus-make-hashtable
1388 (count-lines (point-min) (point-max))))))
1389 (let ((expiry-hashtb (gnus-make-hashtable 1023)))
1390 (gnus-agent-open-history)
1392 (setq gnus-agent-current-history
1393 (setq history (gnus-agent-history-buffer))))
1394 (goto-char (point-min))
1395 (when (> (buffer-size) 1)
1396 (goto-char (point-min))
1398 (skip-chars-forward "^\t")
1399 (if (> (read (current-buffer)) day)
1400 ;; New article; we don't expire it.
1402 ;; Old article. Schedule it for possible nuking.
1404 (setq sym (let ((obarray expiry-hashtb))
1405 (read (current-buffer))))
1407 (set sym (cons (cons (read (current-buffer)) (point))
1408 (symbol-value sym)))
1409 (set sym (list (cons (read (current-buffer)) (point)))))
1410 (skip-chars-forward " "))
1412 ;; We now have all articles that can possibly be expired.
1415 (setq group (symbol-name sym)
1416 articles (sort (symbol-value sym) 'car-less-than-car)
1417 low (car (gnus-active group))
1418 info (gnus-get-info group)
1419 unreads (ignore-errors
1420 (gnus-list-of-unread-articles group))
1422 (gnus-uncompress-range
1423 (cdr (assq 'tick (gnus-info-marks info))))
1424 (gnus-uncompress-range
1426 (gnus-info-marks info)))))
1427 nov-file (gnus-agent-article-name ".overview" group)
1430 (gnus-agent-load-alist group)
1431 (gnus-message 5 "Expiring articles in %s" group)
1432 (set-buffer overview)
1434 (when (file-exists-p nov-file)
1435 (nnheader-insert-file-contents nov-file))
1436 (goto-char (point-min))
1438 (while (setq elem (pop articles))
1439 (setq article (car elem))
1440 (when (or (null low)
1442 gnus-agent-expire-all
1443 (and (not (memq article unreads))
1444 (not (memq article marked))))
1445 ;; Find and nuke the NOV line.
1446 (while (and (not (eobp))
1448 (setq art (read (current-buffer)))))
1451 (gnus-agent-article-name
1452 (number-to-string art) group))
1458 ;; Remove old NOV lines that have no articles.
1459 (gnus-delete-line)))
1464 ;; Nuke the article.
1465 (when (file-exists-p
1466 (setq file (gnus-agent-article-name
1467 (number-to-string article)
1470 ;; Schedule the history line for nuking.
1471 (push (cdr elem) histories)))
1472 (gnus-make-directory (file-name-directory nov-file))
1473 (let ((coding-system-for-write
1474 gnus-agent-file-coding-system))
1475 (write-region (point-min) (point-max) nov-file nil 'silent))
1476 ;; Delete the unwanted entries in the alist.
1477 (setq gnus-agent-article-alist
1478 (sort gnus-agent-article-alist 'car-less-than-car))
1479 (let* ((alist gnus-agent-article-alist)
1480 (prev (cons nil alist))
1484 (<= (caar alist) article))
1485 (if (or (not (cdar alist))
1487 (gnus-agent-article-name
1492 (push (caar alist) expired)
1493 (setcdr prev (setq alist (cdr alist))))
1495 alist (cdr alist))))
1496 (setq gnus-agent-article-alist (cdr first))
1497 (gnus-agent-save-alist group)
1498 ;; Mark all articles up to the first article
1499 ;; in `gnus-article-alist' as read.
1500 (when (and info (caar gnus-agent-article-alist))
1501 (setcar (nthcdr 2 info)
1504 (cons 1 (- (caar gnus-agent-article-alist) 1)))))
1505 ;; Maybe everything has been expired from `gnus-article-alist'
1506 ;; and so the above marking as read could not be conducted,
1507 ;; or there are expired article within the range of the alist.
1510 (or (not (caar gnus-agent-article-alist))
1512 (caar gnus-agent-article-alist))))
1513 (setcar (nthcdr 2 info)
1516 (nreverse expired))))
1518 (concat "(gnus-group-set-info '"
1519 (gnus-prin1-to-string info)
1522 (if (gnus-gethash group orig)
1523 (setcar (gnus-gethash group orig) lowest)
1524 (gnus-sethash group (cons lowest highest) orig))))
1526 (set-buffer history)
1527 (setq histories (nreverse (sort histories '<)))
1529 (goto-char (pop histories))
1531 (gnus-agent-save-history)
1532 (gnus-agent-close-history)
1533 (gnus-write-active-file
1534 (gnus-agent-lib-file "active") orig))
1535 (gnus-message 4 "Expiry...done")))))))
1538 (defun gnus-agent-batch ()
1540 (let ((init-file-user "")
1541 (gnus-always-read-dribble-file t))
1543 (gnus-group-send-drafts)
1544 (gnus-agent-fetch-session))
1546 (provide 'gnus-agent)
1548 ;;; gnus-agent.el ends here