1 ;;; gnus-agent.el --- unplugged support for Semi-gnus
2 ;; Copyright (C) 1997,98,99 Free Software Foundation, Inc.
4 ;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
5 ;; Tatsuya Ichikawa <t-ichi@po.shiojiri.ne.jp>
6 ;; This file is part of GNU Emacs.
8 ;; GNU Emacs is free software; you can redistribute it and/or modify
9 ;; it under the terms of the GNU General Public License as published by
10 ;; the Free Software Foundation; either version 2, or (at your option)
13 ;; GNU Emacs is distributed in the hope that it will be useful,
14 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
15 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 ;; GNU General Public License for more details.
18 ;; You should have received a copy of the GNU General Public License
19 ;; along with GNU Emacs; see the file COPYING. If not, write to the
20 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
21 ;; Boston, MA 02111-1307, USA.
33 (require 'gnus-score))
35 (defcustom gnus-agent-directory (nnheader-concat gnus-directory "agent/")
36 "Where the Gnus agent will store its files."
40 (defcustom gnus-agent-plugged-hook nil
41 "Hook run when plugging into the network."
45 (defcustom gnus-agent-unplugged-hook nil
46 "Hook run when unplugging from the network."
50 (defcustom gnus-agent-handle-level gnus-level-subscribed
51 "Groups on levels higher than this variable will be ignored by the Agent."
55 (defcustom gnus-agent-expire-days 7
56 "Read articles older than this will be expired."
60 (defcustom gnus-agent-expire-all nil
61 "If non-nil, also expire unread, ticked and dormant articles.
62 If nil, only read articles will be expired."
66 (defcustom gnus-agent-group-mode-hook nil
67 "Hook run in Agent group minor modes."
71 (defcustom gnus-agent-summary-mode-hook nil
72 "Hook run in Agent summary minor modes."
76 (defcustom gnus-agent-server-mode-hook nil
77 "Hook run in Agent summary minor modes."
81 ;;; Internal variables
83 (defvar gnus-agent-history-buffers nil)
84 (defvar gnus-agent-buffer-alist nil)
85 (defvar gnus-agent-article-alist nil)
86 (defvar gnus-agent-group-alist nil)
87 (defvar gnus-agent-covered-methods nil)
88 (defvar gnus-category-alist nil)
89 (defvar gnus-agent-current-history nil)
90 (defvar gnus-agent-overview-buffer nil)
91 (defvar gnus-category-predicate-cache nil)
92 (defvar gnus-category-group-cache nil)
93 (defvar gnus-agent-spam-hashtb nil)
94 (defvar gnus-agent-file-name nil)
95 (defvar gnus-agent-send-mail-function nil)
96 (defvar gnus-agent-file-coding-system 'raw-text)
98 (defconst gnus-agent-scoreable-headers
99 '("subject" "from" "date" "message-id" "references" "chars" "lines" "xref")
100 "Headers that are considered when scoring articles for download via the Agent.")
103 (defvar gnus-headers)
110 (defun gnus-open-agent ()
112 (gnus-agent-read-servers)
114 (setq gnus-agent-overview-buffer
115 (gnus-get-buffer-create " *Gnus agent overview*"))
116 (add-hook 'gnus-group-mode-hook 'gnus-agent-mode)
117 (add-hook 'gnus-summary-mode-hook 'gnus-agent-mode)
118 (add-hook 'gnus-server-mode-hook 'gnus-agent-mode))
120 (gnus-add-shutdown 'gnus-close-agent 'gnus)
122 (defun gnus-close-agent ()
123 (setq gnus-agent-covered-methods nil
124 gnus-category-predicate-cache nil
125 gnus-category-group-cache nil
126 gnus-agent-spam-hashtb nil)
127 (gnus-kill-buffer gnus-agent-overview-buffer))
130 ;;; Utility functions
133 (defun gnus-agent-read-file (file)
134 "Load FILE and do a `read' there."
137 (nnheader-insert-file-contents file)
138 (goto-char (point-min))
139 (read (current-buffer)))))
141 (defsubst gnus-agent-method ()
142 (concat (symbol-name (car gnus-command-method)) "/"
143 (if (equal (cadr gnus-command-method) "")
145 (cadr gnus-command-method))))
147 (defsubst gnus-agent-directory ()
148 "Path of the Gnus agent directory."
149 (nnheader-concat gnus-agent-directory
150 (nnheader-translate-file-chars (gnus-agent-method)) "/"))
152 (defun gnus-agent-lib-file (file)
153 "The full path of the Gnus agent library FILE."
154 (concat (gnus-agent-directory) "agent.lib/" file))
156 ;;; Fetching setup functions.
158 (defun gnus-agent-start-fetch ()
159 "Initialize data structures for efficient fetching."
160 (gnus-agent-open-history)
161 (setq gnus-agent-current-history (gnus-agent-history-buffer)))
163 (defun gnus-agent-stop-fetch ()
164 "Save all data structures and clean up."
165 (gnus-agent-save-history)
166 (gnus-agent-close-history)
167 (setq gnus-agent-spam-hashtb nil)
169 (set-buffer nntp-server-buffer)
172 (defmacro gnus-agent-with-fetch (&rest forms)
176 (gnus-agent-start-fetch)
178 (gnus-agent-stop-fetch)))
180 (put 'gnus-agent-with-fetch 'lisp-indent-function 0)
181 (put 'gnus-agent-with-fetch 'edebug-form-spec '(body))
187 (defvar gnus-agent-mode-hook nil
188 "Hook run when installing agent mode.")
190 (defvar gnus-agent-mode nil)
191 (defvar gnus-agent-mode-status '(gnus-agent-mode " Plugged"))
193 (defun gnus-agent-mode ()
194 "Minor mode for providing a agent support in Gnus buffers."
195 (let* ((buffer (progn (string-match "^gnus-\\(.*\\)-mode$"
196 (symbol-name major-mode))
197 (match-string 1 (symbol-name major-mode))))
198 (mode (intern (format "gnus-agent-%s-mode" buffer))))
199 (set (make-local-variable 'gnus-agent-mode) t)
201 (set (make-local-variable mode) t)
203 (when (gnus-visual-p 'agent-menu 'menu)
204 (funcall (intern (format "gnus-agent-%s-make-menu-bar" buffer))))
205 (unless (assq 'gnus-agent-mode minor-mode-alist)
206 (push gnus-agent-mode-status minor-mode-alist))
207 (unless (assq mode minor-mode-map-alist)
208 (push (cons mode (symbol-value (intern (format "gnus-agent-%s-mode-map"
210 minor-mode-map-alist))
211 (when (eq major-mode 'gnus-group-mode)
212 (gnus-agent-toggle-plugged gnus-plugged))
213 (gnus-run-hooks 'gnus-agent-mode-hook
214 (intern (format "gnus-agent-%s-mode-hook" buffer)))))
216 (defvar gnus-agent-group-mode-map (make-sparse-keymap))
217 (gnus-define-keys gnus-agent-group-mode-map
218 "Ju" gnus-agent-fetch-groups
219 "Jc" gnus-enter-category-buffer
220 "Jj" gnus-agent-toggle-plugged
221 "Js" gnus-agent-fetch-session
222 "JS" gnus-group-send-drafts
223 "Ja" gnus-agent-add-group
224 "Jr" gnus-agent-remove-group)
226 (defun gnus-agent-group-make-menu-bar ()
227 (unless (boundp 'gnus-agent-group-menu)
229 gnus-agent-group-menu gnus-agent-group-mode-map ""
231 ["Toggle plugged" gnus-agent-toggle-plugged t]
232 ["List categories" gnus-enter-category-buffer t]
233 ["Send drafts" gnus-group-send-drafts gnus-plugged]
235 ["All" gnus-agent-fetch-session gnus-plugged]
236 ["Group" gnus-agent-fetch-group gnus-plugged])))))
238 (defvar gnus-agent-summary-mode-map (make-sparse-keymap))
239 (gnus-define-keys gnus-agent-summary-mode-map
240 "Jj" gnus-agent-toggle-plugged
241 "J#" gnus-agent-mark-article
242 "J\M-#" gnus-agent-unmark-article
243 "@" gnus-agent-toggle-mark
244 "Jc" gnus-agent-catchup)
246 (defun gnus-agent-summary-make-menu-bar ()
247 (unless (boundp 'gnus-agent-summary-menu)
249 gnus-agent-summary-menu gnus-agent-summary-mode-map ""
251 ["Toggle plugged" gnus-agent-toggle-plugged t]
252 ["Mark as downloadable" gnus-agent-mark-article t]
253 ["Unmark as downloadable" gnus-agent-unmark-article t]
254 ["Toggle mark" gnus-agent-toggle-mark t]
255 ["Catchup undownloaded" gnus-agent-catchup t]))))
257 (defvar gnus-agent-server-mode-map (make-sparse-keymap))
258 (gnus-define-keys gnus-agent-server-mode-map
259 "Jj" gnus-agent-toggle-plugged
260 "Ja" gnus-agent-add-server
261 "Jr" gnus-agent-remove-server)
263 (defun gnus-agent-server-make-menu-bar ()
264 (unless (boundp 'gnus-agent-server-menu)
266 gnus-agent-server-menu gnus-agent-server-mode-map ""
268 ["Toggle plugged" gnus-agent-toggle-plugged t]
269 ["Add" gnus-agent-add-server t]
270 ["Remove" gnus-agent-remove-server t]))))
272 (defun gnus-agent-toggle-plugged (plugged)
273 "Toggle whether Gnus is unplugged or not."
274 (interactive (list (not gnus-plugged)))
277 (setq gnus-plugged plugged)
278 (gnus-run-hooks 'gnus-agent-plugged-hook)
279 (setcar (cdr gnus-agent-mode-status) " Plugged"))
280 (gnus-agent-close-connections)
281 (setq gnus-plugged plugged)
282 (gnus-run-hooks 'gnus-agent-unplugged-hook)
283 (setcar (cdr gnus-agent-mode-status) " Unplugged"))
284 (set-buffer-modified-p t))
286 (defun gnus-agent-close-connections ()
287 "Close all methods covered by the Gnus agent."
288 (let ((methods gnus-agent-covered-methods))
290 (gnus-close-server (pop methods)))))
293 (defun gnus-unplugged ()
294 "Start Gnus unplugged."
296 (setq gnus-plugged nil)
300 (defun gnus-plugged ()
301 "Start Gnus plugged."
303 (setq gnus-plugged t)
307 (defun gnus-agentize ()
308 "Allow Gnus to be an offline newsreader.
309 The normal usage of this command is to put the following as the
310 last form in your `.gnus.el' file:
314 This will modify the `gnus-before-startup-hook', `gnus-post-method',
315 and `message-send-mail-function' variables, and install the Gnus
316 agent minor mode in all Gnus buffers."
319 (add-hook 'gnus-setup-news-hook 'gnus-agent-queue-setup)
320 (unless gnus-agent-send-mail-function
321 (setq gnus-agent-send-mail-function message-send-mail-function
322 message-send-mail-function 'gnus-agent-send-mail))
323 (unless gnus-agent-covered-methods
324 (setq gnus-agent-covered-methods (list gnus-select-method))))
326 (defun gnus-agent-queue-setup ()
327 "Make sure the queue group exists."
328 (unless (gnus-gethash "nndraft:queue" gnus-newsrc-hashtb)
329 (gnus-request-create-group "queue" '(nndraft ""))
330 (let ((gnus-level-default-subscribed 1))
331 (gnus-subscribe-group "nndraft:queue" nil '(nndraft "")))
332 (gnus-group-set-parameter
333 "nndraft:queue" 'gnus-dummy '((gnus-draft-mode)))))
335 (defun gnus-agent-send-mail ()
337 (funcall gnus-agent-send-mail-function)
338 (goto-char (point-min))
340 (concat "^" (regexp-quote mail-header-separator) "\n"))
342 (gnus-agent-insert-meta-information 'mail)
343 (gnus-request-accept-article "nndraft:queue" nil t t)))
345 (defun gnus-agent-insert-meta-information (type &optional method)
346 "Insert meta-information into the message that says how it's to be posted.
347 TYPE can be either `mail' or `news'. If the latter METHOD can
350 (message-remove-header gnus-agent-meta-information-header)
351 (goto-char (point-min))
352 (insert gnus-agent-meta-information-header ": "
353 (symbol-name type) " " (format "%S" method)
356 (while (search-backward "\n" nil t)
357 (replace-match "\\n" t t))))
360 ;;; Group mode commands
363 (defun gnus-agent-fetch-groups (n)
364 "Put all new articles in the current groups into the Agent."
367 (error "Groups can't be fetched when Gnus is unplugged"))
368 (gnus-group-iterate n 'gnus-agent-fetch-group))
370 (defun gnus-agent-fetch-group (group)
371 "Put all new articles in GROUP into the Agent."
372 (interactive (list (gnus-group-group-name)))
374 (error "Groups can't be fetched when Gnus is unplugged"))
376 (error "No group on the current line"))
377 (let ((gnus-command-method (gnus-find-method-for-group group)))
378 (gnus-agent-with-fetch
379 (gnus-agent-fetch-group-1 group gnus-command-method)
380 (gnus-message 5 "Fetching %s...done" group))))
382 (defun gnus-agent-add-group (category arg)
383 "Add the current group to an agent category."
389 (mapcar (lambda (cat) (list (symbol-name (car cat))))
393 (let ((cat (assq category gnus-category-alist))
395 (gnus-group-iterate arg
397 (when (cadddr (setq c (gnus-group-category group)))
398 (setf (cadddr c) (delete group (cadddr c))))
399 (push group groups)))
400 (setf (cadddr cat) (nconc (cadddr cat) groups))
401 (gnus-category-write)))
403 (defun gnus-agent-remove-group (arg)
404 "Remove the current group from its agent category, if any."
407 (gnus-group-iterate arg
409 (when (cadddr (setq c (gnus-group-category group)))
410 (setf (cadddr c) (delete group (cadddr c))))))
411 (gnus-category-write)))
414 ;;; Server mode commands
417 (defun gnus-agent-add-server (server)
418 "Enroll SERVER in the agent program."
419 (interactive (list (gnus-server-server-name)))
421 (error "No server on the current line"))
422 (let ((method (gnus-server-get-method nil (gnus-server-server-name))))
423 (when (member method gnus-agent-covered-methods)
424 (error "Server already in the agent program"))
425 (push method gnus-agent-covered-methods)
426 (gnus-agent-write-servers)
427 (message "Entered %s into the Agent" server)))
429 (defun gnus-agent-remove-server (server)
430 "Remove SERVER from the agent program."
431 (interactive (list (gnus-server-server-name)))
433 (error "No server on the current line"))
434 (let ((method (gnus-server-get-method nil (gnus-server-server-name))))
435 (unless (member method gnus-agent-covered-methods)
436 (error "Server not in the agent program"))
437 (setq gnus-agent-covered-methods
438 (delete method gnus-agent-covered-methods))
439 (gnus-agent-write-servers)
440 (message "Removed %s from the agent" server)))
442 (defun gnus-agent-read-servers ()
443 "Read the alist of covered servers."
444 (setq gnus-agent-covered-methods
445 (gnus-agent-read-file
446 (nnheader-concat gnus-agent-directory "lib/servers"))))
448 (defun gnus-agent-write-servers ()
449 "Write the alist of covered servers."
450 (gnus-make-directory (nnheader-concat gnus-agent-directory "lib"))
451 (with-temp-file (nnheader-concat gnus-agent-directory "lib/servers")
452 (prin1 gnus-agent-covered-methods (current-buffer))))
458 (defun gnus-agent-mark-article (n &optional unmark)
459 "Mark the next N articles as downloadable.
460 If N is negative, mark backward instead. If UNMARK is non-nil, remove
461 the mark instead. The difference between N and the actual number of
462 articles marked is returned."
464 (let ((backward (< n 0))
469 (gnus-summary-set-agent-mark
470 (gnus-summary-article-number) unmark)
471 (zerop (gnus-summary-next-subject (if backward -1 1) nil t))))
474 (gnus-message 7 "No more articles"))
475 (gnus-summary-recenter)
476 (gnus-summary-position-point)
479 (defun gnus-agent-unmark-article (n)
480 "Remove the downloadable mark from the next N articles.
481 If N is negative, unmark backward instead. The difference between N and
482 the actual number of articles unmarked is returned."
484 (gnus-agent-mark-article n t))
486 (defun gnus-agent-toggle-mark (n)
487 "Toggle the downloadable mark from the next N articles.
488 If N is negative, toggle backward instead. The difference between N and
489 the actual number of articles toggled is returned."
491 (gnus-agent-mark-article n 'toggle))
493 (defun gnus-summary-set-agent-mark (article &optional unmark)
494 "Mark ARTICLE as downloadable."
495 (let ((unmark (if (and (not (null unmark)) (not (eq t unmark)))
496 (memq article gnus-newsgroup-downloadable)
500 (setq gnus-newsgroup-downloadable
501 (delq article gnus-newsgroup-downloadable))
502 (push article gnus-newsgroup-undownloaded))
503 (setq gnus-newsgroup-undownloaded
504 (delq article gnus-newsgroup-undownloaded))
505 (push article gnus-newsgroup-downloadable))
506 (gnus-summary-update-mark
507 (if unmark gnus-undownloaded-mark gnus-downloadable-mark)
510 (defun gnus-agent-get-undownloaded-list ()
511 "Mark all unfetched articles as read."
512 (let ((gnus-command-method (gnus-find-method-for-group gnus-newsgroup-name)))
513 (when (and (not gnus-plugged)
514 (gnus-agent-method-p gnus-command-method))
515 (gnus-agent-load-alist gnus-newsgroup-name)
516 ;; First mark all undownloaded articles as undownloaded.
517 (let ((articles (append gnus-newsgroup-unreads
518 gnus-newsgroup-marked
519 gnus-newsgroup-dormant))
521 (while (setq article (pop articles))
522 (unless (or (cdr (assq article gnus-agent-article-alist))
523 (memq article gnus-newsgroup-downloadable))
524 (push article gnus-newsgroup-undownloaded))))
525 ;; Then mark downloaded downloadable as not-downloadable,
526 ;; if you get my drift.
527 (let ((articles gnus-newsgroup-downloadable)
529 (while (setq article (pop articles))
530 (when (cdr (assq article gnus-agent-article-alist))
531 (setq gnus-newsgroup-downloadable
532 (delq article gnus-newsgroup-downloadable))))))))
534 (defun gnus-agent-catchup ()
535 "Mark all undownloaded articles as read."
538 (while gnus-newsgroup-undownloaded
539 (gnus-summary-mark-article
540 (pop gnus-newsgroup-undownloaded) gnus-catchup-mark)))
541 (gnus-summary-position-point))
544 ;;; Internal functions
547 (defun gnus-agent-save-active (method)
548 (gnus-agent-save-active-1 method 'gnus-active-to-gnus-format))
550 (defun gnus-agent-save-active-1 (method function)
551 (when (gnus-agent-method-p method)
552 (let* ((gnus-command-method method)
553 (new (gnus-make-hashtable (count-lines (point-min) (point-max))))
554 (file (gnus-agent-lib-file "active")))
555 (funcall function nil new)
556 (gnus-agent-write-active file new)
558 (insert-file-contents-as-coding-system gnus-agent-file-coding-system
561 (defun gnus-agent-write-active (file new)
562 (let ((orig (gnus-make-hashtable (count-lines (point-min) (point-max))))
563 (file (gnus-agent-lib-file "active"))
565 (when (file-exists-p file)
567 (insert-file-contents-as-coding-system gnus-agent-file-coding-system
569 (gnus-active-to-gnus-format nil orig))
572 (when (and sym (boundp sym))
573 (if (and (boundp (setq osym (intern (symbol-name sym) orig)))
574 (setq elem (symbol-value osym)))
575 (setcdr elem (cdr (symbol-value sym)))
576 (set (intern (symbol-name sym) orig) (symbol-value sym)))))
578 (gnus-make-directory (file-name-directory file))
579 (gnus-write-active-file-as-coding-system gnus-agent-file-coding-system
582 (defun gnus-agent-save-groups (method)
583 (gnus-agent-save-active-1 method 'gnus-groups-to-gnus-format))
585 (defun gnus-agent-save-group-info (method group active)
586 (when (gnus-agent-method-p method)
587 (let* ((gnus-command-method method)
588 (file (gnus-agent-lib-file "active")))
589 (gnus-make-directory (file-name-directory file))
591 (when (file-exists-p file)
592 (nnheader-insert-file-contents file))
593 (goto-char (point-min))
594 (when (re-search-forward
595 (concat "^" (regexp-quote group) " ") nil t)
597 (insert group " " (number-to-string (cdr active)) " "
598 (number-to-string (car active)) " y\n")))))
600 (defun gnus-agent-group-path (group)
601 "Translate GROUP into a path."
602 (if nnmail-use-long-file-names
603 (gnus-group-real-name group)
604 (nnheader-replace-chars-in-string
605 (nnheader-translate-file-chars (gnus-group-real-name group))
610 (defun gnus-agent-method-p (method)
611 "Say whether METHOD is covered by the agent."
612 (member method gnus-agent-covered-methods))
614 (defun gnus-agent-get-function (method)
615 (if (and (not gnus-plugged)
616 (gnus-agent-method-p method))
622 ;;; History functions
624 (defun gnus-agent-history-buffer ()
625 (cdr (assoc (gnus-agent-method) gnus-agent-history-buffers)))
627 (defun gnus-agent-open-history ()
629 (push (cons (gnus-agent-method)
630 (set-buffer (gnus-get-buffer-create
631 (format " *Gnus agent %s history*"
632 (gnus-agent-method)))))
633 gnus-agent-history-buffers)
636 (let ((file (gnus-agent-lib-file "history")))
637 (when (file-exists-p file)
639 (set (make-local-variable 'gnus-agent-file-name) file))))
641 (defun gnus-agent-save-history ()
643 (set-buffer gnus-agent-current-history)
644 (gnus-make-directory (file-name-directory gnus-agent-file-name))
645 (write-region-as-coding-system
646 gnus-agent-file-coding-system
647 (1+ (point-min)) (point-max) gnus-agent-file-name nil 'silent)))
649 (defun gnus-agent-close-history ()
650 (when (gnus-buffer-live-p gnus-agent-current-history)
651 (kill-buffer gnus-agent-current-history)
652 (setq gnus-agent-history-buffers
653 (delq (assoc (gnus-agent-method) gnus-agent-history-buffers)
654 gnus-agent-history-buffers))))
656 (defun gnus-agent-enter-history (id group-arts date)
658 (set-buffer gnus-agent-current-history)
659 (goto-char (point-max))
660 (insert id "\t" (number-to-string date) "\t")
662 (insert (caar group-arts) " " (number-to-string (cdr (pop group-arts)))
666 (defun gnus-agent-article-in-history-p (id)
668 (set-buffer (gnus-agent-history-buffer))
669 (goto-char (point-min))
670 (search-forward (concat "\n" id "\t") nil t)))
672 (defun gnus-agent-history-path (id)
674 (set-buffer (gnus-agent-history-buffer))
675 (goto-char (point-min))
676 (when (search-forward (concat "\n" id "\t") nil t)
677 (let ((method (gnus-agent-method)))
679 (while (not (numberp (setq group (read (current-buffer)))))
680 (push (concat method "/" group) paths))
681 (nreverse paths))))))
687 (defun gnus-agent-fetch-articles (group articles)
688 "Fetch ARTICLES from GROUP and put them into the Agent."
690 ;; Prune off articles that we have already fetched.
692 (cdr (assq (car articles) gnus-agent-article-alist)))
694 (let ((arts articles))
696 (if (cdr (assq (cadr arts) gnus-agent-article-alist))
697 (setcdr arts (cddr arts))
698 (setq arts (cdr arts)))))
701 (gnus-agent-directory)
702 (gnus-agent-group-path group) "/"))
703 (date (time-to-days (current-time)))
706 (gnus-make-directory dir)
707 (gnus-message 7 "Fetching articles for %s..." group)
708 ;; Fetch the articles from the backend.
709 (if (gnus-check-backend-function 'retrieve-articles group)
710 (setq pos (gnus-retrieve-articles articles group))
713 (while (setq article (pop articles))
714 (when (gnus-request-article article group)
715 (goto-char (point-max))
716 (push (cons article (point)) pos)
717 (insert-buffer-substring nntp-server-buffer)))
718 (copy-to-buffer nntp-server-buffer (point-min) (point-max))
719 (setq pos (nreverse pos)))))
720 ;; Then save these articles into the Agent.
722 (set-buffer nntp-server-buffer)
724 (narrow-to-region (cdar pos) (or (cdadr pos) (point-max)))
725 (goto-char (point-min))
726 (when (search-forward "\n\n" nil t)
727 (when (search-backward "\nXrefs: " nil t)
728 ;; Handle crossposting.
729 (skip-chars-forward "^ ")
730 (skip-chars-forward " ")
732 (while (looking-at "\\([^: \n]+\\):\\([0-9]+\\) +")
733 (push (cons (buffer-substring (match-beginning 1)
735 (buffer-substring (match-beginning 2)
738 (goto-char (match-end 0)))
739 (gnus-agent-crosspost crosses (caar pos))))
740 (goto-char (point-min))
741 (if (not (re-search-forward "^Message-ID: *<\\([^>\n]+\\)>" nil t))
742 (setq id "No-Message-ID-in-article")
743 (setq id (buffer-substring (match-beginning 1) (match-end 1))))
744 (write-region-as-coding-system
745 gnus-agent-file-coding-system
746 (point-min) (point-max)
747 (concat dir (number-to-string (caar pos))) nil 'silent)
748 (when (setq elem (assq (caar pos) gnus-agent-article-alist))
750 (gnus-agent-enter-history
751 id (or crosses (list (cons group (caar pos)))) date)
754 (gnus-agent-save-alist group)))))
756 (defun gnus-agent-crosspost (crosses article)
757 (let (gnus-agent-article-alist group alist beg end)
759 (set-buffer gnus-agent-overview-buffer)
760 (when (nnheader-find-nov-line article)
763 (setq end (progn (forward-line 1) (point)))))
765 (setq group (caar crosses))
766 (unless (setq alist (assoc group gnus-agent-group-alist))
767 (push (setq alist (list group (gnus-agent-load-alist (caar crosses))))
768 gnus-agent-group-alist))
769 (setcdr alist (cons (cons (cdar crosses) t) (cdr alist)))
771 (set-buffer (gnus-get-buffer-create (format " *Gnus agent overview %s*"
773 (when (= (point-max) (point-min))
774 (push (cons group (current-buffer)) gnus-agent-buffer-alist)
776 (nnheader-insert-file-contents
777 (gnus-agent-article-name ".overview" group))))
778 (nnheader-find-nov-line (string-to-number (cdar crosses)))
779 (insert (string-to-number (cdar crosses)))
780 (insert-buffer-substring gnus-agent-overview-buffer beg end))
783 (defun gnus-agent-flush-cache ()
785 (while gnus-agent-buffer-alist
786 (set-buffer (cdar gnus-agent-buffer-alist))
787 (write-region-as-coding-system
788 gnus-agent-file-coding-system
789 (point-min) (point-max)
790 (gnus-agent-article-name ".overview"
791 (caar gnus-agent-buffer-alist))
793 (pop gnus-agent-buffer-alist))
794 (while gnus-agent-group-alist
795 (with-temp-file (caar gnus-agent-group-alist)
796 (princ (cdar gnus-agent-group-alist))
798 (pop gnus-agent-group-alist))))
800 (defun gnus-agent-fetch-headers (group &optional force)
801 (let ((articles (gnus-list-of-unread-articles group))
802 (gnus-decode-encoded-word-function 'identity)
803 (file (gnus-agent-article-name ".overview" group)))
804 ;; add article with marks to list of article headers we want to fetch
805 (dolist (arts (gnus-info-marks (gnus-get-info group)))
806 (setq articles (union (gnus-uncompress-sequence (cdr arts))
808 (setq articles (sort articles '<))
809 ;; remove known articles
810 (when (gnus-agent-load-alist group)
811 (setq articles (gnus-sorted-intersection
813 (gnus-uncompress-range
814 (cons (1+ (caar (last gnus-agent-article-alist)))
815 (cdr (gnus-active group)))))))
817 (gnus-make-directory (nnheader-translate-file-chars
818 (file-name-directory file)))
820 (gnus-message 7 "Fetching headers for %s..." group)
822 (set-buffer nntp-server-buffer)
823 (unless (eq 'nov (gnus-retrieve-headers articles group))
824 (nnvirtual-convert-headers))
825 ;; Save these headers for later processing.
826 (copy-to-buffer gnus-agent-overview-buffer (point-min) (point-max))
827 (when (file-exists-p file)
828 (gnus-agent-braid-nov group articles file))
829 (write-region-as-coding-system
830 gnus-agent-file-coding-system
831 (point-min) (point-max) file nil 'silent)
832 (gnus-agent-save-alist group articles nil)
833 (gnus-agent-enter-history
834 "last-header-fetched-for-session"
835 (list (cons group (nth (- (length articles) 1) articles)))
836 (time-to-days (current-time)))
839 (defsubst gnus-agent-copy-nov-line (article)
841 (set-buffer gnus-agent-overview-buffer)
843 (if (eq article (read (current-buffer)))
844 (setq e (progn (forward-line 1) (point)))
848 (set-buffer nntp-server-buffer)
849 (insert-buffer-substring gnus-agent-overview-buffer b e)))
851 (defun gnus-agent-braid-nov (group articles file)
852 (set-buffer gnus-agent-overview-buffer)
853 (goto-char (point-min))
854 (set-buffer nntp-server-buffer)
856 (nnheader-insert-file-contents file)
857 (goto-char (point-max))
858 (if (or (= (point-min) (point-max))
861 (< (read (current-buffer)) (car articles))))
862 ;; We have only headers that are after the older headers,
863 ;; so we just append them.
865 (goto-char (point-max))
866 (insert-buffer-substring gnus-agent-overview-buffer))
867 ;; We do it the hard way.
868 (nnheader-find-nov-line (car articles))
869 (gnus-agent-copy-nov-line (car articles))
873 (while (and (not (eobp))
874 (< (read (current-buffer)) (car articles)))
878 (gnus-agent-copy-nov-line (car articles))
879 (setq articles (cdr articles))))
882 (set-buffer gnus-agent-overview-buffer)
885 (set-buffer nntp-server-buffer)
886 (insert-buffer-substring gnus-agent-overview-buffer b e)))))
888 (defun gnus-agent-load-alist (group &optional dir)
889 "Load the article-state alist for GROUP."
890 (setq gnus-agent-article-alist
891 (gnus-agent-read-file
893 (concat dir ".agentview")
894 (gnus-agent-article-name ".agentview" group)))))
896 (defun gnus-agent-save-alist (group &optional articles state dir)
897 "Save the article-state alist for GROUP."
898 (with-temp-file (if dir
899 (concat dir ".agentview")
900 (gnus-agent-article-name ".agentview" group))
901 (princ (setq gnus-agent-article-alist
902 (nconc gnus-agent-article-alist
903 (mapcar (lambda (article) (cons article state))
908 (defun gnus-agent-article-name (article group)
909 (concat (gnus-agent-directory) (gnus-agent-group-path group) "/"
910 (if (stringp article) article (string-to-number article))))
913 (defun gnus-agent-batch-fetch ()
914 "Start Gnus and fetch session."
917 (gnus-agent-fetch-session)
920 (defun gnus-agent-fetch-session ()
921 "Fetch all articles and headers that are eligible for fetching."
923 (unless gnus-agent-covered-methods
924 (error "No servers are covered by the Gnus agent"))
926 (error "Can't fetch articles while Gnus is unplugged"))
927 (let ((methods gnus-agent-covered-methods)
928 groups group gnus-command-method)
931 (setq gnus-command-method (car methods))
932 (when (or (gnus-server-opened gnus-command-method)
933 (gnus-open-server gnus-command-method))
934 (setq groups (gnus-groups-from-server (car methods)))
935 (gnus-agent-with-fetch
936 (while (setq group (pop groups))
937 (when (<= (gnus-group-level group) gnus-agent-handle-level)
938 (gnus-agent-fetch-group-1 group gnus-command-method)))))
940 (gnus-message 6 "Finished fetching articles into the Gnus agent"))))
942 (defun gnus-agent-fetch-group-1 (group method)
944 (let ((gnus-command-method method)
945 (gnus-newsgroup-name group)
946 gnus-newsgroup-dependencies gnus-newsgroup-headers
947 gnus-newsgroup-scored gnus-headers gnus-score
948 gnus-use-cache articles arts
949 category predicate info marks score-param)
951 (when (and (or (gnus-active group) (gnus-activate-group group))
952 (setq articles (gnus-agent-fetch-headers group)))
953 ;; Parse them and see which articles we want to fetch.
954 (setq gnus-newsgroup-dependencies
955 (make-vector (length articles) 0))
956 ;; No need to call `gnus-get-newsgroup-headers-xover' with
957 ;; the entire .overview for group as we still have the just
958 ;; downloaded headers in `gnus-agent-overview-buffer'.
959 (let ((nntp-server-buffer gnus-agent-overview-buffer))
960 (setq gnus-newsgroup-headers
961 (gnus-get-newsgroup-headers-xover articles nil nil group)))
962 (setq category (gnus-group-category group))
965 (or (gnus-group-get-parameter group 'agent-predicate t)
967 ;; Do we want to download everything, or nothing?
968 (if (or (eq (caaddr predicate) 'gnus-agent-true)
969 (eq (caaddr predicate) 'gnus-agent-false))
971 (setq arts (symbol-value
972 (cadr (assoc (caaddr predicate)
973 '((gnus-agent-true articles)
974 (gnus-agent-false nil))))))
975 ;; No, we need to decide what we want.
979 (gnus-group-get-parameter group 'agent-score t)
982 (require 'gnus-score)
983 (if (eq score-method 'file)
985 (gnus-score-load-files
986 (gnus-all-score-files group)))
988 (while (setq list (car entries))
989 (push (car list) score-file)
990 (setq list (cdr list))
992 (when (member (caar list)
993 gnus-agent-scoreable-headers)
994 (push (car list) score-file))
995 (setq list (cdr list)))
997 (append score-param (list (nreverse score-file)))
998 score-file nil entries (cdr entries)))
1000 (if (stringp (car score-method))
1002 (list (list score-method)))))))
1004 (gnus-score-headers score-param))
1006 (while (setq gnus-headers (pop gnus-newsgroup-headers))
1008 (or (cdr (assq (mail-header-number gnus-headers)
1009 gnus-newsgroup-scored))
1010 gnus-summary-default-score))
1011 (when (funcall predicate)
1012 (push (mail-header-number gnus-headers)
1014 ;; Fetch the articles.
1016 (gnus-agent-fetch-articles group arts)))
1017 ;; Perhaps we have some additional articles to fetch.
1018 (setq arts (assq 'download (gnus-info-marks
1019 (setq info (gnus-get-info group)))))
1021 (gnus-agent-fetch-articles
1022 group (gnus-uncompress-range (cdr arts)))
1023 (setq marks (delq arts (gnus-info-marks info)))
1024 (gnus-info-set-marks info marks)
1026 (concat "(gnus-group-set-info '"
1027 (gnus-prin1-to-string info)
1031 ;;; Agent Category Mode
1034 (defvar gnus-category-mode-hook nil
1035 "Hook run in `gnus-category-mode' buffers.")
1037 (defvar gnus-category-line-format " %(%20c%): %g\n"
1038 "Format of category lines.")
1040 (defvar gnus-category-mode-line-format "Gnus: %%b"
1041 "The format specification for the category mode line.")
1043 (defvar gnus-agent-short-article 100
1044 "Articles that have fewer lines than this are short.")
1046 (defvar gnus-agent-long-article 200
1047 "Articles that have more lines than this are long.")
1049 (defvar gnus-agent-low-score 0
1050 "Articles that have a score lower than this have a low score.")
1052 (defvar gnus-agent-high-score 0
1053 "Articles that have a score higher than this have a high score.")
1056 ;;; Internal variables.
1058 (defvar gnus-category-buffer "*Agent Category*")
1060 (defvar gnus-category-line-format-alist
1061 `((?c gnus-tmp-name ?s)
1062 (?g gnus-tmp-groups ?d)))
1064 (defvar gnus-category-mode-line-format-alist
1065 `((?u user-defined ?s)))
1067 (defvar gnus-category-line-format-spec nil)
1068 (defvar gnus-category-mode-line-format-spec nil)
1070 (defvar gnus-category-mode-map nil)
1071 (put 'gnus-category-mode 'mode-class 'special)
1073 (unless gnus-category-mode-map
1074 (setq gnus-category-mode-map (make-sparse-keymap))
1075 (suppress-keymap gnus-category-mode-map)
1077 (gnus-define-keys gnus-category-mode-map
1078 "q" gnus-category-exit
1079 "k" gnus-category-kill
1080 "c" gnus-category-copy
1081 "a" gnus-category-add
1082 "p" gnus-category-edit-predicate
1083 "g" gnus-category-edit-groups
1084 "s" gnus-category-edit-score
1085 "l" gnus-category-list
1087 "\C-c\C-i" gnus-info-find-node
1088 "\C-c\C-b" gnus-bug))
1090 (defvar gnus-category-menu-hook nil
1091 "*Hook run after the creation of the menu.")
1093 (defun gnus-category-make-menu-bar ()
1094 (gnus-turn-off-edit-menu 'category)
1095 (unless (boundp 'gnus-category-menu)
1097 gnus-category-menu gnus-category-mode-map ""
1099 ["Add" gnus-category-add t]
1100 ["Kill" gnus-category-kill t]
1101 ["Copy" gnus-category-copy t]
1102 ["Edit predicate" gnus-category-edit-predicate t]
1103 ["Edit score" gnus-category-edit-score t]
1104 ["Edit groups" gnus-category-edit-groups t]
1105 ["Exit" gnus-category-exit t]))
1107 (gnus-run-hooks 'gnus-category-menu-hook)))
1109 (defun gnus-category-mode ()
1110 "Major mode for listing and editing agent categories.
1112 All normal editing commands are switched off.
1113 \\<gnus-category-mode-map>
1114 For more in-depth information on this mode, read the manual
1115 (`\\[gnus-info-find-node]').
1117 The following commands are available:
1119 \\{gnus-category-mode-map}"
1121 (when (gnus-visual-p 'category-menu 'menu)
1122 (gnus-category-make-menu-bar))
1123 (kill-all-local-variables)
1124 (gnus-simplify-mode-line)
1125 (setq major-mode 'gnus-category-mode)
1126 (setq mode-name "Category")
1127 (gnus-set-default-directory)
1128 (setq mode-line-process nil)
1129 (use-local-map gnus-category-mode-map)
1130 (buffer-disable-undo)
1131 (setq truncate-lines t)
1132 (setq buffer-read-only t)
1133 (gnus-run-hooks 'gnus-category-mode-hook))
1135 (defalias 'gnus-category-position-point 'gnus-goto-colon)
1137 (defun gnus-category-insert-line (category)
1138 (let* ((gnus-tmp-name (car category))
1139 (gnus-tmp-groups (length (cadddr category))))
1141 (gnus-add-text-properties
1145 (eval gnus-category-line-format-spec))
1146 (list 'gnus-category gnus-tmp-name))))
1148 (defun gnus-enter-category-buffer ()
1149 "Go to the Category buffer."
1151 (gnus-category-setup-buffer)
1152 (gnus-configure-windows 'category)
1153 (gnus-category-prepare))
1155 (defun gnus-category-setup-buffer ()
1156 (unless (get-buffer gnus-category-buffer)
1158 (set-buffer (gnus-get-buffer-create gnus-category-buffer))
1159 (gnus-category-mode))))
1161 (defun gnus-category-prepare ()
1162 (gnus-set-format 'category-mode)
1163 (gnus-set-format 'category t)
1164 (let ((alist gnus-category-alist)
1165 (buffer-read-only nil))
1168 (gnus-category-insert-line (pop alist)))
1169 (goto-char (point-min))
1170 (gnus-category-position-point)))
1172 (defun gnus-category-name ()
1173 (or (get-text-property (gnus-point-at-bol) 'gnus-category)
1174 (error "No category on the current line")))
1176 (defun gnus-category-read ()
1177 "Read the category alist."
1178 (setq gnus-category-alist
1179 (or (gnus-agent-read-file
1180 (nnheader-concat gnus-agent-directory "lib/categories"))
1181 (list (list 'default 'short nil nil)))))
1183 (defun gnus-category-write ()
1184 "Write the category alist."
1185 (setq gnus-category-predicate-cache nil
1186 gnus-category-group-cache nil)
1187 (gnus-make-directory (nnheader-concat gnus-agent-directory "lib"))
1188 (with-temp-file (nnheader-concat gnus-agent-directory "lib/categories")
1189 (prin1 gnus-category-alist (current-buffer))))
1191 (defun gnus-category-edit-predicate (category)
1192 "Edit the predicate for CATEGORY."
1193 (interactive (list (gnus-category-name)))
1194 (let ((info (assq category gnus-category-alist)))
1196 (cadr info) (format "Editing the predicate for category %s" category)
1197 `(lambda (predicate)
1198 (setf (cadr (assq ',category gnus-category-alist)) predicate)
1199 (gnus-category-write)
1200 (gnus-category-list)))))
1202 (defun gnus-category-edit-score (category)
1203 "Edit the score expression for CATEGORY."
1204 (interactive (list (gnus-category-name)))
1205 (let ((info (assq category gnus-category-alist)))
1208 (format "Editing the score expression for category %s" category)
1210 (setf (caddr (assq ',category gnus-category-alist)) groups)
1211 (gnus-category-write)
1212 (gnus-category-list)))))
1214 (defun gnus-category-edit-groups (category)
1215 "Edit the group list for CATEGORY."
1216 (interactive (list (gnus-category-name)))
1217 (let ((info (assq category gnus-category-alist)))
1219 (cadddr info) (format "Editing the group list for category %s" category)
1221 (setf (cadddr (assq ',category gnus-category-alist)) groups)
1222 (gnus-category-write)
1223 (gnus-category-list)))))
1225 (defun gnus-category-kill (category)
1226 "Kill the current category."
1227 (interactive (list (gnus-category-name)))
1228 (let ((info (assq category gnus-category-alist))
1229 (buffer-read-only nil))
1231 (gnus-category-write)
1232 (setq gnus-category-alist (delq info gnus-category-alist))))
1234 (defun gnus-category-copy (category to)
1235 "Copy the current category."
1236 (interactive (list (gnus-category-name) (intern (read-string "New name: "))))
1237 (let ((info (assq category gnus-category-alist)))
1238 (push (list to (gnus-copy-sequence (cadr info))
1239 (gnus-copy-sequence (caddr info)) nil)
1240 gnus-category-alist)
1241 (gnus-category-write)
1242 (gnus-category-list)))
1244 (defun gnus-category-add (category)
1245 "Create a new category."
1246 (interactive "SCategory name: ")
1247 (when (assq category gnus-category-alist)
1248 (error "Category %s already exists" category))
1249 (push (list category 'false nil nil)
1250 gnus-category-alist)
1251 (gnus-category-write)
1252 (gnus-category-list))
1254 (defun gnus-category-list ()
1255 "List all categories."
1257 (gnus-category-prepare))
1259 (defun gnus-category-exit ()
1260 "Return to the group buffer."
1262 (kill-buffer (current-buffer))
1263 (gnus-configure-windows 'group t))
1265 ;; To avoid having 8-bit characters in the source file.
1266 (defvar gnus-category-not (list '! 'not (intern (format "%c" 172))))
1268 (defvar gnus-category-predicate-alist
1269 '((spam . gnus-agent-spam-p)
1270 (short . gnus-agent-short-p)
1271 (long . gnus-agent-long-p)
1272 (low . gnus-agent-low-scored-p)
1273 (high . gnus-agent-high-scored-p)
1274 (true . gnus-agent-true)
1275 (false . gnus-agent-false))
1276 "Mapping from short score predicate symbols to predicate functions.")
1278 (defun gnus-agent-spam-p ()
1279 "Say whether an article is spam or not."
1280 (unless gnus-agent-spam-hashtb
1281 (setq gnus-agent-spam-hashtb (gnus-make-hashtable 1000)))
1282 (if (not (equal (mail-header-references gnus-headers) ""))
1284 (let ((string (gnus-simplify-subject (mail-header-subject gnus-headers))))
1286 (gnus-gethash string gnus-agent-spam-hashtb)
1287 (gnus-sethash string t gnus-agent-spam-hashtb)))))
1289 (defun gnus-agent-short-p ()
1290 "Say whether an article is short or not."
1291 (< (mail-header-lines gnus-headers) gnus-agent-short-article))
1293 (defun gnus-agent-long-p ()
1294 "Say whether an article is long or not."
1295 (> (mail-header-lines gnus-headers) gnus-agent-long-article))
1297 (defun gnus-agent-low-scored-p ()
1298 "Say whether an article has a low score or not."
1299 (< gnus-score gnus-agent-low-score))
1301 (defun gnus-agent-high-scored-p ()
1302 "Say whether an article has a high score or not."
1303 (> gnus-score gnus-agent-high-score))
1305 (defun gnus-category-make-function (cat)
1306 "Make a function from category CAT."
1307 `(lambda () ,(gnus-category-make-function-1 cat)))
1309 (defun gnus-agent-true ()
1313 (defun gnus-agent-false ()
1317 (defun gnus-category-make-function-1 (cat)
1318 "Make a function from category CAT."
1320 ;; Functions are just returned as is.
1322 (gnus-functionp cat))
1323 `(,(or (cdr (assq cat gnus-category-predicate-alist))
1325 ;; More complex category.
1328 ((memq (car cat) '(& and))
1330 ((memq (car cat) '(| or))
1332 ((memq (car cat) gnus-category-not)
1334 ,@(mapcar 'gnus-category-make-function-1 (cdr cat))))
1336 (error "Unknown category type: %s" cat))))
1338 (defun gnus-get-predicate (predicate)
1339 "Return the predicate for CATEGORY."
1340 (or (cdr (assoc predicate gnus-category-predicate-cache))
1341 (cdar (push (cons predicate
1342 (gnus-category-make-function predicate))
1343 gnus-category-predicate-cache))))
1345 (defun gnus-group-category (group)
1346 "Return the category GROUP belongs to."
1347 (unless gnus-category-group-cache
1348 (setq gnus-category-group-cache (gnus-make-hashtable 1000))
1349 (let ((cs gnus-category-alist)
1351 (while (setq cat (pop cs))
1352 (setq groups (cadddr cat))
1354 (gnus-sethash (pop groups) cat gnus-category-group-cache)))))
1355 (or (gnus-gethash group gnus-category-group-cache)
1356 (assq 'default gnus-category-alist)))
1358 (defun gnus-agent-expire ()
1359 "Expire all old articles."
1361 (let ((methods gnus-agent-covered-methods)
1362 (day (- (time-to-days (current-time)) gnus-agent-expire-days))
1363 gnus-command-method sym group articles
1364 history overview file histories elem art nov-file low info
1365 unreads marked article orig lowest highest)
1367 (setq overview (gnus-get-buffer-create " *expire overview*"))
1368 (while (setq gnus-command-method (pop methods))
1370 (insert-file-contents-as-coding-system
1371 gnus-agent-file-coding-system (gnus-agent-lib-file "active"))
1372 (gnus-active-to-gnus-format
1374 (setq orig (gnus-make-hashtable
1375 (count-lines (point-min) (point-max))))))
1376 (let ((expiry-hashtb (gnus-make-hashtable 1023)))
1377 (gnus-agent-open-history)
1379 (setq gnus-agent-current-history
1380 (setq history (gnus-agent-history-buffer))))
1381 (goto-char (point-min))
1382 (when (> (buffer-size) 1)
1383 (goto-char (point-min))
1385 (skip-chars-forward "^\t")
1386 (if (> (read (current-buffer)) day)
1387 ;; New article; we don't expire it.
1389 ;; Old article. Schedule it for possible nuking.
1391 (setq sym (let ((obarray expiry-hashtb))
1392 (read (current-buffer))))
1394 (set sym (cons (cons (read (current-buffer)) (point))
1395 (symbol-value sym)))
1396 (set sym (list (cons (read (current-buffer)) (point)))))
1397 (skip-chars-forward " "))
1399 ;; We now have all articles that can possibly be expired.
1402 (setq group (symbol-name sym)
1403 articles (sort (symbol-value sym) 'car-less-than-car)
1404 low (car (gnus-active group))
1405 info (gnus-get-info group)
1406 unreads (ignore-errors (gnus-list-of-unread-articles group))
1407 marked (nconc (gnus-uncompress-range
1408 (cdr (assq 'tick (gnus-info-marks info))))
1409 (gnus-uncompress-range
1411 (gnus-info-marks info)))))
1412 nov-file (gnus-agent-article-name ".overview" group)
1415 (gnus-agent-load-alist group)
1416 (gnus-message 5 "Expiring articles in %s" group)
1417 (set-buffer overview)
1419 (when (file-exists-p nov-file)
1420 (nnheader-insert-file-contents nov-file))
1421 (goto-char (point-min))
1423 (while (setq elem (pop articles))
1424 (setq article (car elem))
1425 (when (or (null low)
1427 gnus-agent-expire-all
1428 (and (not (memq article unreads))
1429 (not (memq article marked))))
1430 ;; Find and nuke the NOV line.
1431 (while (and (not (eobp))
1433 (setq art (read (current-buffer)))))
1436 (gnus-agent-article-name
1437 (number-to-string art) group))
1443 ;; Remove old NOV lines that have no articles.
1444 (gnus-delete-line)))
1449 ;; Nuke the article.
1450 (when (file-exists-p (setq file (gnus-agent-article-name
1451 (number-to-string article)
1454 ;; Schedule the history line for nuking.
1455 (push (cdr elem) histories)))
1456 (gnus-make-directory (file-name-directory nov-file))
1457 (write-region-as-coding-system
1458 gnus-agent-file-coding-system
1459 (point-min) (point-max) nov-file nil 'silent)
1460 ;; Delete the unwanted entries in the alist.
1461 (setq gnus-agent-article-alist
1462 (sort gnus-agent-article-alist 'car-less-than-car))
1463 (let* ((alist gnus-agent-article-alist)
1464 (prev (cons nil alist))
1468 (<= (caar alist) article))
1469 (if (or (not (cdar alist))
1471 (gnus-agent-article-name
1476 (push (caar alist) expired)
1477 (setcdr prev (setq alist (cdr alist))))
1479 alist (cdr alist))))
1480 (setq gnus-agent-article-alist (cdr first))
1481 (gnus-agent-save-alist group)
1482 ;; Mark all articles up to the first article
1483 ;; in `gnus-article-alist' as read.
1484 (when (and info (caar gnus-agent-article-alist))
1485 (setcar (nthcdr 2 info)
1488 (cons 1 (- (caar gnus-agent-article-alist) 1)))))
1489 ;; Maybe everything has been expired from `gnus-article-alist'
1490 ;; and so the above marking as read could not be conducted,
1491 ;; or there are expired article within the range of the alist.
1494 (or (not (caar gnus-agent-article-alist))
1496 (caar gnus-agent-article-alist))))
1497 (setcar (nthcdr 2 info)
1500 (nreverse expired))))
1502 (concat "(gnus-group-set-info '"
1503 (gnus-prin1-to-string info)
1506 (if (gnus-gethash group orig)
1507 (setcar (gnus-gethash group orig) lowest)
1508 (gnus-sethash group (cons lowest highest) orig))))
1510 (set-buffer history)
1511 (setq histories (nreverse (sort histories '<)))
1513 (goto-char (pop histories))
1515 (gnus-agent-save-history)
1516 (gnus-agent-close-history)
1517 (gnus-write-active-file-as-coding-system
1518 gnus-agent-file-coding-system
1519 (gnus-agent-lib-file "active") orig))
1520 (gnus-message 4 "Expiry...done"))))))
1523 (defun gnus-agent-batch ()
1525 (let ((init-file-user "")
1526 (gnus-always-read-dribble-file t))
1528 (gnus-group-send-drafts)
1529 (gnus-agent-fetch-session))
1531 (provide 'gnus-agent)
1533 ;;; gnus-agent.el ends here