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 (setq gnus-agent-overview-buffer
114 (gnus-get-buffer-create " *Gnus agent overview*"))
115 (with-current-buffer gnus-agent-overview-buffer
116 (mm-enable-multibyte))
117 (add-hook 'gnus-group-mode-hook 'gnus-agent-mode)
118 (add-hook 'gnus-summary-mode-hook 'gnus-agent-mode)
119 (add-hook 'gnus-server-mode-hook 'gnus-agent-mode))
121 (gnus-add-shutdown 'gnus-close-agent 'gnus)
123 (defun gnus-close-agent ()
124 (setq gnus-agent-covered-methods nil
125 gnus-category-predicate-cache nil
126 gnus-category-group-cache nil
127 gnus-agent-spam-hashtb nil)
128 (gnus-kill-buffer gnus-agent-overview-buffer))
131 ;;; Utility functions
134 (defun gnus-agent-read-file (file)
135 "Load FILE and do a `read' there."
138 (nnheader-insert-file-contents file)
139 (goto-char (point-min))
140 (read (current-buffer)))))
142 (defsubst gnus-agent-method ()
143 (concat (symbol-name (car gnus-command-method)) "/"
144 (if (equal (cadr gnus-command-method) "")
146 (cadr gnus-command-method))))
148 (defsubst gnus-agent-directory ()
149 "Path of the Gnus agent directory."
150 (nnheader-concat gnus-agent-directory
151 (nnheader-translate-file-chars (gnus-agent-method)) "/"))
153 (defun gnus-agent-lib-file (file)
154 "The full path of the Gnus agent library FILE."
155 (concat (gnus-agent-directory) "agent.lib/" file))
157 ;;; Fetching setup functions.
159 (defun gnus-agent-start-fetch ()
160 "Initialize data structures for efficient fetching."
161 (gnus-agent-open-history)
162 (setq gnus-agent-current-history (gnus-agent-history-buffer)))
164 (defun gnus-agent-stop-fetch ()
165 "Save all data structures and clean up."
166 (gnus-agent-save-history)
167 (gnus-agent-close-history)
168 (setq gnus-agent-spam-hashtb nil)
170 (set-buffer nntp-server-buffer)
173 (defmacro gnus-agent-with-fetch (&rest forms)
177 (gnus-agent-start-fetch)
179 (gnus-agent-stop-fetch)))
181 (put 'gnus-agent-with-fetch 'lisp-indent-function 0)
182 (put 'gnus-agent-with-fetch 'edebug-form-spec '(body))
188 (defvar gnus-agent-mode-hook nil
189 "Hook run when installing agent mode.")
191 (defvar gnus-agent-mode nil)
192 (defvar gnus-agent-mode-status '(gnus-agent-mode " Plugged"))
194 (defun gnus-agent-mode ()
195 "Minor mode for providing a agent support in Gnus buffers."
196 (let* ((buffer (progn (string-match "^gnus-\\(.*\\)-mode$"
197 (symbol-name major-mode))
198 (match-string 1 (symbol-name major-mode))))
199 (mode (intern (format "gnus-agent-%s-mode" buffer))))
200 (set (make-local-variable 'gnus-agent-mode) t)
202 (set (make-local-variable mode) t)
204 (when (gnus-visual-p 'agent-menu 'menu)
205 (funcall (intern (format "gnus-agent-%s-make-menu-bar" buffer))))
206 (unless (assq 'gnus-agent-mode minor-mode-alist)
207 (push gnus-agent-mode-status minor-mode-alist))
208 (unless (assq mode minor-mode-map-alist)
209 (push (cons mode (symbol-value (intern (format "gnus-agent-%s-mode-map"
211 minor-mode-map-alist))
212 (when (eq major-mode 'gnus-group-mode)
213 (gnus-agent-toggle-plugged gnus-plugged))
214 (gnus-run-hooks 'gnus-agent-mode-hook
215 (intern (format "gnus-agent-%s-mode-hook" buffer)))))
217 (defvar gnus-agent-group-mode-map (make-sparse-keymap))
218 (gnus-define-keys gnus-agent-group-mode-map
219 "Ju" gnus-agent-fetch-groups
220 "Jc" gnus-enter-category-buffer
221 "Jj" gnus-agent-toggle-plugged
222 "Js" gnus-agent-fetch-session
223 "JS" gnus-group-send-drafts
224 "Ja" gnus-agent-add-group
225 "Jr" gnus-agent-remove-group)
227 (defun gnus-agent-group-make-menu-bar ()
228 (unless (boundp 'gnus-agent-group-menu)
230 gnus-agent-group-menu gnus-agent-group-mode-map ""
232 ["Toggle plugged" gnus-agent-toggle-plugged t]
233 ["List categories" gnus-enter-category-buffer t]
234 ["Send drafts" gnus-group-send-drafts gnus-plugged]
236 ["All" gnus-agent-fetch-session gnus-plugged]
237 ["Group" gnus-agent-fetch-group gnus-plugged])))))
239 (defvar gnus-agent-summary-mode-map (make-sparse-keymap))
240 (gnus-define-keys gnus-agent-summary-mode-map
241 "Jj" gnus-agent-toggle-plugged
242 "J#" gnus-agent-mark-article
243 "J\M-#" gnus-agent-unmark-article
244 "@" gnus-agent-toggle-mark
245 "Jc" gnus-agent-catchup)
247 (defun gnus-agent-summary-make-menu-bar ()
248 (unless (boundp 'gnus-agent-summary-menu)
250 gnus-agent-summary-menu gnus-agent-summary-mode-map ""
252 ["Toggle plugged" gnus-agent-toggle-plugged t]
253 ["Mark as downloadable" gnus-agent-mark-article t]
254 ["Unmark as downloadable" gnus-agent-unmark-article t]
255 ["Toggle mark" gnus-agent-toggle-mark t]
256 ["Catchup undownloaded" gnus-agent-catchup t]))))
258 (defvar gnus-agent-server-mode-map (make-sparse-keymap))
259 (gnus-define-keys gnus-agent-server-mode-map
260 "Jj" gnus-agent-toggle-plugged
261 "Ja" gnus-agent-add-server
262 "Jr" gnus-agent-remove-server)
264 (defun gnus-agent-server-make-menu-bar ()
265 (unless (boundp 'gnus-agent-server-menu)
267 gnus-agent-server-menu gnus-agent-server-mode-map ""
269 ["Toggle plugged" gnus-agent-toggle-plugged t]
270 ["Add" gnus-agent-add-server t]
271 ["Remove" gnus-agent-remove-server t]))))
273 (defun gnus-agent-toggle-plugged (plugged)
274 "Toggle whether Gnus is unplugged or not."
275 (interactive (list (not gnus-plugged)))
278 (setq gnus-plugged plugged)
279 (gnus-run-hooks 'gnus-agent-plugged-hook)
280 (setcar (cdr gnus-agent-mode-status) " Plugged"))
281 (gnus-agent-close-connections)
282 (setq gnus-plugged plugged)
283 (gnus-run-hooks 'gnus-agent-unplugged-hook)
284 (setcar (cdr gnus-agent-mode-status) " Unplugged"))
285 (set-buffer-modified-p t))
287 (defun gnus-agent-close-connections ()
288 "Close all methods covered by the Gnus agent."
289 (let ((methods gnus-agent-covered-methods))
291 (gnus-close-server (pop methods)))))
294 (defun gnus-unplugged ()
295 "Start Gnus unplugged."
297 (setq gnus-plugged nil)
301 (defun gnus-plugged ()
302 "Start Gnus plugged."
304 (setq gnus-plugged t)
308 (defun gnus-agentize ()
309 "Allow Gnus to be an offline newsreader.
310 The normal usage of this command is to put the following as the
311 last form in your `.gnus.el' file:
315 This will modify the `gnus-before-startup-hook', `gnus-post-method',
316 and `message-send-mail-function' variables, and install the Gnus
317 agent minor mode in all Gnus buffers."
320 (add-hook 'gnus-setup-news-hook 'gnus-agent-queue-setup)
321 (unless gnus-agent-send-mail-function
322 (setq gnus-agent-send-mail-function message-send-mail-function
323 message-send-mail-function 'gnus-agent-send-mail))
324 (unless gnus-agent-covered-methods
325 (setq gnus-agent-covered-methods (list gnus-select-method))))
327 (defun gnus-agent-queue-setup ()
328 "Make sure the queue group exists."
329 (unless (gnus-gethash "nndraft:queue" gnus-newsrc-hashtb)
330 (gnus-request-create-group "queue" '(nndraft ""))
331 (let ((gnus-level-default-subscribed 1))
332 (gnus-subscribe-group "nndraft:queue" nil '(nndraft "")))
333 (gnus-group-set-parameter
334 "nndraft:queue" 'gnus-dummy '((gnus-draft-mode)))))
336 (defun gnus-agent-send-mail ()
338 (funcall gnus-agent-send-mail-function)
339 (goto-char (point-min))
341 (concat "^" (regexp-quote mail-header-separator) "\n"))
343 (gnus-agent-insert-meta-information 'mail)
344 (gnus-request-accept-article "nndraft:queue" nil t t)))
346 (defun gnus-agent-insert-meta-information (type &optional method)
347 "Insert meta-information into the message that says how it's to be posted.
348 TYPE can be either `mail' or `news'. If the latter METHOD can
351 (message-remove-header gnus-agent-meta-information-header)
352 (goto-char (point-min))
353 (insert gnus-agent-meta-information-header ": "
354 (symbol-name type) " " (format "%S" method)
357 (while (search-backward "\n" nil t)
358 (replace-match "\\n" t t))))
361 ;;; Group mode commands
364 (defun gnus-agent-fetch-groups (n)
365 "Put all new articles in the current groups into the Agent."
368 (error "Groups can't be fetched when Gnus is unplugged"))
369 (gnus-group-iterate n 'gnus-agent-fetch-group))
371 (defun gnus-agent-fetch-group (group)
372 "Put all new articles in GROUP into the Agent."
373 (interactive (list (gnus-group-group-name)))
375 (error "Groups can't be fetched when Gnus is unplugged"))
377 (error "No group on the current line"))
378 (let ((gnus-command-method (gnus-find-method-for-group group)))
379 (gnus-agent-with-fetch
380 (gnus-agent-fetch-group-1 group gnus-command-method)
381 (gnus-message 5 "Fetching %s...done" group))))
383 (defun gnus-agent-add-group (category arg)
384 "Add the current group to an agent category."
390 (mapcar (lambda (cat) (list (symbol-name (car cat))))
394 (let ((cat (assq category gnus-category-alist))
396 (gnus-group-iterate arg
398 (when (cadddr (setq c (gnus-group-category group)))
399 (setf (cadddr c) (delete group (cadddr c))))
400 (push group groups)))
401 (setf (cadddr cat) (nconc (cadddr cat) groups))
402 (gnus-category-write)))
404 (defun gnus-agent-remove-group (arg)
405 "Remove the current group from its agent category, if any."
408 (gnus-group-iterate arg
410 (when (cadddr (setq c (gnus-group-category group)))
411 (setf (cadddr c) (delete group (cadddr c))))))
412 (gnus-category-write)))
415 ;;; Server mode commands
418 (defun gnus-agent-add-server (server)
419 "Enroll SERVER in the agent program."
420 (interactive (list (gnus-server-server-name)))
422 (error "No server on the current line"))
423 (let ((method (gnus-server-get-method nil (gnus-server-server-name))))
424 (when (member method gnus-agent-covered-methods)
425 (error "Server already in the agent program"))
426 (push method gnus-agent-covered-methods)
427 (gnus-agent-write-servers)
428 (message "Entered %s into the Agent" server)))
430 (defun gnus-agent-remove-server (server)
431 "Remove SERVER from the agent program."
432 (interactive (list (gnus-server-server-name)))
434 (error "No server on the current line"))
435 (let ((method (gnus-server-get-method nil (gnus-server-server-name))))
436 (unless (member method gnus-agent-covered-methods)
437 (error "Server not in the agent program"))
438 (setq gnus-agent-covered-methods
439 (delete method gnus-agent-covered-methods))
440 (gnus-agent-write-servers)
441 (message "Removed %s from the agent" server)))
443 (defun gnus-agent-read-servers ()
444 "Read the alist of covered servers."
445 (setq gnus-agent-covered-methods
446 (gnus-agent-read-file
447 (nnheader-concat gnus-agent-directory "lib/servers"))))
449 (defun gnus-agent-write-servers ()
450 "Write the alist of covered servers."
451 (gnus-make-directory (nnheader-concat gnus-agent-directory "lib"))
452 (with-temp-file (nnheader-concat gnus-agent-directory "lib/servers")
453 (prin1 gnus-agent-covered-methods (current-buffer))))
459 (defun gnus-agent-mark-article (n &optional unmark)
460 "Mark the next N articles as downloadable.
461 If N is negative, mark backward instead. If UNMARK is non-nil, remove
462 the mark instead. The difference between N and the actual number of
463 articles marked is returned."
465 (let ((backward (< n 0))
470 (gnus-summary-set-agent-mark
471 (gnus-summary-article-number) unmark)
472 (zerop (gnus-summary-next-subject (if backward -1 1) nil t))))
475 (gnus-message 7 "No more articles"))
476 (gnus-summary-recenter)
477 (gnus-summary-position-point)
480 (defun gnus-agent-unmark-article (n)
481 "Remove the downloadable mark from the next N articles.
482 If N is negative, unmark backward instead. The difference between N and
483 the actual number of articles unmarked is returned."
485 (gnus-agent-mark-article n t))
487 (defun gnus-agent-toggle-mark (n)
488 "Toggle the downloadable mark from the next N articles.
489 If N is negative, toggle backward instead. The difference between N and
490 the actual number of articles toggled is returned."
492 (gnus-agent-mark-article n 'toggle))
494 (defun gnus-summary-set-agent-mark (article &optional unmark)
495 "Mark ARTICLE as downloadable."
496 (let ((unmark (if (and (not (null unmark)) (not (eq t unmark)))
497 (memq article gnus-newsgroup-downloadable)
501 (setq gnus-newsgroup-downloadable
502 (delq article gnus-newsgroup-downloadable))
503 (push article gnus-newsgroup-undownloaded))
504 (setq gnus-newsgroup-undownloaded
505 (delq article gnus-newsgroup-undownloaded))
506 (push article gnus-newsgroup-downloadable))
507 (gnus-summary-update-mark
508 (if unmark gnus-undownloaded-mark gnus-downloadable-mark)
511 (defun gnus-agent-get-undownloaded-list ()
512 "Mark all unfetched articles as read."
513 (let ((gnus-command-method (gnus-find-method-for-group gnus-newsgroup-name)))
514 (when (and (not gnus-plugged)
515 (gnus-agent-method-p gnus-command-method))
516 (gnus-agent-load-alist gnus-newsgroup-name)
517 ;; First mark all undownloaded articles as undownloaded.
518 (let ((articles (append gnus-newsgroup-unreads
519 gnus-newsgroup-marked
520 gnus-newsgroup-dormant))
522 (while (setq article (pop articles))
523 (unless (or (cdr (assq article gnus-agent-article-alist))
524 (memq article gnus-newsgroup-downloadable)
525 (memq article gnus-newsgroup-cached))
526 (push article gnus-newsgroup-undownloaded))))
527 ;; Then mark downloaded downloadable as not-downloadable,
528 ;; if you get my drift.
529 (let ((articles gnus-newsgroup-downloadable)
531 (while (setq article (pop articles))
532 (when (cdr (assq article gnus-agent-article-alist))
533 (setq gnus-newsgroup-downloadable
534 (delq article gnus-newsgroup-downloadable))))))))
536 (defun gnus-agent-catchup ()
537 "Mark all undownloaded articles as read."
540 (while gnus-newsgroup-undownloaded
541 (gnus-summary-mark-article
542 (pop gnus-newsgroup-undownloaded) gnus-catchup-mark)))
543 (gnus-summary-position-point))
546 ;;; Internal functions
549 (defun gnus-agent-save-active (method)
550 (gnus-agent-save-active-1 method 'gnus-active-to-gnus-format))
552 (defun gnus-agent-save-active-1 (method function)
553 (when (gnus-agent-method-p method)
554 (let* ((gnus-command-method method)
555 (new (gnus-make-hashtable (count-lines (point-min) (point-max))))
556 (file (gnus-agent-lib-file "active")))
557 (funcall function nil new)
558 (gnus-agent-write-active file new)
560 (insert-file-contents-literally file))))
562 (defun gnus-agent-write-active (file new)
563 (let ((orig (gnus-make-hashtable (count-lines (point-min) (point-max))))
564 (file (gnus-agent-lib-file "active"))
566 (when (file-exists-p file)
568 (insert-file-contents file)
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 (let ((coding-system-for-write gnus-agent-file-coding-system))
580 (gnus-write-active-file file orig))))
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 (let ((coding-system-for-write gnus-agent-file-coding-system))
646 (write-region (1+ (point-min)) (point-max)
647 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 (let ((coding-system-for-write
745 gnus-agent-file-coding-system))
746 (write-region (point-min) (point-max)
747 (concat dir (number-to-string (caar pos)))
749 (when (setq elem (assq (caar pos) gnus-agent-article-alist))
751 (gnus-agent-enter-history
752 id (or crosses (list (cons group (caar pos)))) date)
755 (gnus-agent-save-alist group)))))
757 (defun gnus-agent-crosspost (crosses article)
758 (let (gnus-agent-article-alist group alist beg end)
760 (set-buffer gnus-agent-overview-buffer)
761 (when (nnheader-find-nov-line article)
764 (setq end (progn (forward-line 1) (point)))))
766 (setq group (caar crosses))
767 (unless (setq alist (assoc group gnus-agent-group-alist))
768 (push (setq alist (list group (gnus-agent-load-alist (caar crosses))))
769 gnus-agent-group-alist))
770 (setcdr alist (cons (cons (cdar crosses) t) (cdr alist)))
772 (set-buffer (gnus-get-buffer-create (format " *Gnus agent overview %s*"
774 (when (= (point-max) (point-min))
775 (push (cons group (current-buffer)) gnus-agent-buffer-alist)
777 (nnheader-insert-file-contents
778 (gnus-agent-article-name ".overview" group))))
779 (nnheader-find-nov-line (string-to-number (cdar crosses)))
780 (insert (string-to-number (cdar crosses)))
781 (insert-buffer-substring gnus-agent-overview-buffer beg end))
784 (defun gnus-agent-flush-cache ()
786 (while gnus-agent-buffer-alist
787 (set-buffer (cdar gnus-agent-buffer-alist))
788 (let ((coding-system-for-write
789 gnus-agent-file-coding-system))
790 (write-region (point-min) (point-max)
791 (gnus-agent-article-name ".overview"
792 (caar gnus-agent-buffer-alist))
794 (pop gnus-agent-buffer-alist))
795 (while gnus-agent-group-alist
796 (with-temp-file (caar gnus-agent-group-alist)
797 (princ (cdar gnus-agent-group-alist))
799 (pop gnus-agent-group-alist))))
801 (defun gnus-agent-fetch-headers (group &optional force)
802 (let ((articles (gnus-list-of-unread-articles group))
803 (gnus-decode-encoded-word-function 'identity)
804 (file (gnus-agent-article-name ".overview" group)))
805 ;; add article with marks to list of article headers we want to fetch
806 (dolist (arts (gnus-info-marks (gnus-get-info group)))
807 (setq articles (union (gnus-uncompress-sequence (cdr arts))
809 (setq articles (sort articles '<))
810 ;; remove known articles
811 (when (gnus-agent-load-alist group)
812 (setq articles (gnus-sorted-intersection
814 (gnus-uncompress-range
815 (cons (1+ (caar (last gnus-agent-article-alist)))
816 (cdr (gnus-active group)))))))
818 (gnus-make-directory (nnheader-translate-file-chars
819 (file-name-directory file)))
821 (gnus-message 7 "Fetching headers for %s..." group)
823 (set-buffer nntp-server-buffer)
824 (unless (eq 'nov (gnus-retrieve-headers articles group))
825 (nnvirtual-convert-headers))
826 ;; Save these headers for later processing.
827 (copy-to-buffer gnus-agent-overview-buffer (point-min) (point-max))
828 (when (file-exists-p file)
829 (gnus-agent-braid-nov group articles file))
830 (let ((coding-system-for-write
831 gnus-agent-file-coding-system))
832 (write-region (point-min) (point-max) file nil 'silent))
833 (gnus-agent-save-alist group articles nil)
834 (gnus-agent-enter-history
835 "last-header-fetched-for-session"
836 (list (cons group (nth (- (length articles) 1) articles)))
837 (time-to-days (current-time)))
840 (defsubst gnus-agent-copy-nov-line (article)
842 (set-buffer gnus-agent-overview-buffer)
844 (if (eq article (read (current-buffer)))
845 (setq e (progn (forward-line 1) (point)))
849 (set-buffer nntp-server-buffer)
850 (insert-buffer-substring gnus-agent-overview-buffer b e)))
852 (defun gnus-agent-braid-nov (group articles file)
853 (set-buffer gnus-agent-overview-buffer)
854 (goto-char (point-min))
855 (set-buffer nntp-server-buffer)
857 (nnheader-insert-file-contents file)
858 (goto-char (point-max))
859 (if (or (= (point-min) (point-max))
862 (< (read (current-buffer)) (car articles))))
863 ;; We have only headers that are after the older headers,
864 ;; so we just append them.
866 (goto-char (point-max))
867 (insert-buffer-substring gnus-agent-overview-buffer))
868 ;; We do it the hard way.
869 (nnheader-find-nov-line (car articles))
870 (gnus-agent-copy-nov-line (car articles))
874 (while (and (not (eobp))
875 (< (read (current-buffer)) (car articles)))
879 (gnus-agent-copy-nov-line (car articles))
880 (setq articles (cdr articles))))
883 (set-buffer gnus-agent-overview-buffer)
886 (set-buffer nntp-server-buffer)
887 (insert-buffer-substring gnus-agent-overview-buffer b e)))))
889 (defun gnus-agent-load-alist (group &optional dir)
890 "Load the article-state alist for GROUP."
891 (setq gnus-agent-article-alist
892 (gnus-agent-read-file
894 (concat dir ".agentview")
895 (gnus-agent-article-name ".agentview" group)))))
897 (defun gnus-agent-save-alist (group &optional articles state dir)
898 "Save the article-state alist for GROUP."
899 (with-temp-file (if dir
900 (concat dir ".agentview")
901 (gnus-agent-article-name ".agentview" group))
902 (princ (setq gnus-agent-article-alist
903 (nconc gnus-agent-article-alist
904 (mapcar (lambda (article) (cons article state))
909 (defun gnus-agent-article-name (article group)
910 (concat (gnus-agent-directory) (gnus-agent-group-path group) "/"
911 (if (stringp article) article (string-to-number article))))
914 (defun gnus-agent-batch-fetch ()
915 "Start Gnus and fetch session."
918 (gnus-agent-fetch-session)
921 (defun gnus-agent-fetch-session ()
922 "Fetch all articles and headers that are eligible for fetching."
924 (unless gnus-agent-covered-methods
925 (error "No servers are covered by the Gnus agent"))
927 (error "Can't fetch articles while Gnus is unplugged"))
928 (let ((methods gnus-agent-covered-methods)
929 groups group gnus-command-method)
932 (setq gnus-command-method (car methods))
933 (when (or (gnus-server-opened gnus-command-method)
934 (gnus-open-server gnus-command-method))
935 (setq groups (gnus-groups-from-server (car methods)))
936 (gnus-agent-with-fetch
937 (while (setq group (pop groups))
938 (when (<= (gnus-group-level group) gnus-agent-handle-level)
939 (gnus-agent-fetch-group-1 group gnus-command-method)))))
941 (gnus-message 6 "Finished fetching articles into the Gnus agent"))))
943 (defun gnus-agent-fetch-group-1 (group method)
945 (let ((gnus-command-method method)
946 (gnus-newsgroup-name group)
947 gnus-newsgroup-dependencies gnus-newsgroup-headers
948 gnus-newsgroup-scored gnus-headers gnus-score
949 gnus-use-cache articles arts
950 category predicate info marks score-param)
952 (when (and (or (gnus-active group) (gnus-activate-group group))
953 (setq articles (gnus-agent-fetch-headers group))
955 ;; Parse them and see which articles we want to fetch.
956 (setq gnus-newsgroup-dependencies
957 (make-vector (length articles) 0))
958 ;; No need to call `gnus-get-newsgroup-headers-xover' with
959 ;; the entire .overview for group as we still have the just
960 ;; downloaded headers in `gnus-agent-overview-buffer'.
961 (let ((nntp-server-buffer gnus-agent-overview-buffer))
962 (setq gnus-newsgroup-headers
963 (gnus-get-newsgroup-headers-xover articles nil nil
965 ;; `gnus-agent-overview-buffer' may be killed for
966 ;; timeout reason. If so, recreate it.
967 (if (gnus-buffer-live-p gnus-agent-overview-buffer)
969 (setq gnus-agent-overview-buffer
970 (gnus-get-buffer-create " *Gnus agent overview*"))
971 (with-current-buffer gnus-agent-overview-buffer
972 (mm-enable-multibyte))
974 (setq category (gnus-group-category group))
977 (or (gnus-group-find-parameter group 'agent-predicate t)
979 ;; Do we want to download everything, or nothing?
980 (if (or (eq (caaddr predicate) 'gnus-agent-true)
981 (eq (caaddr predicate) 'gnus-agent-false))
983 (setq arts (symbol-value
984 (cadr (assoc (caaddr predicate)
985 '((gnus-agent-true articles)
986 (gnus-agent-false nil))))))
987 ;; No, we need to decide what we want.
991 (gnus-group-find-parameter group 'agent-score t)
994 (require 'gnus-score)
995 (if (eq score-method 'file)
997 (gnus-score-load-files
998 (gnus-all-score-files group)))
1000 (while (setq list (car entries))
1001 (push (car list) score-file)
1002 (setq list (cdr list))
1004 (when (member (caar list)
1005 gnus-agent-scoreable-headers)
1006 (push (car list) score-file))
1007 (setq list (cdr list)))
1009 (append score-param (list (nreverse score-file)))
1010 score-file nil entries (cdr entries)))
1012 (if (stringp (car score-method))
1014 (list (list score-method)))))))
1016 (gnus-score-headers score-param))
1018 (while (setq gnus-headers (pop gnus-newsgroup-headers))
1020 (or (cdr (assq (mail-header-number gnus-headers)
1021 gnus-newsgroup-scored))
1022 gnus-summary-default-score))
1023 (when (funcall predicate)
1024 (push (mail-header-number gnus-headers)
1026 ;; Fetch the articles.
1028 (gnus-agent-fetch-articles group arts)))
1029 ;; Perhaps we have some additional articles to fetch.
1030 (setq arts (assq 'download (gnus-info-marks
1031 (setq info (gnus-get-info group)))))
1033 (gnus-agent-fetch-articles
1034 group (gnus-uncompress-range (cdr arts)))
1035 (setq marks (delq arts (gnus-info-marks info)))
1036 (gnus-info-set-marks info marks)
1038 (concat "(gnus-group-set-info '"
1039 (gnus-prin1-to-string info)
1043 ;;; Agent Category Mode
1046 (defvar gnus-category-mode-hook nil
1047 "Hook run in `gnus-category-mode' buffers.")
1049 (defvar gnus-category-line-format " %(%20c%): %g\n"
1050 "Format of category lines.")
1052 (defvar gnus-category-mode-line-format "Gnus: %%b"
1053 "The format specification for the category mode line.")
1055 (defvar gnus-agent-short-article 100
1056 "Articles that have fewer lines than this are short.")
1058 (defvar gnus-agent-long-article 200
1059 "Articles that have more lines than this are long.")
1061 (defvar gnus-agent-low-score 0
1062 "Articles that have a score lower than this have a low score.")
1064 (defvar gnus-agent-high-score 0
1065 "Articles that have a score higher than this have a high score.")
1068 ;;; Internal variables.
1070 (defvar gnus-category-buffer "*Agent Category*")
1072 (defvar gnus-category-line-format-alist
1073 `((?c gnus-tmp-name ?s)
1074 (?g gnus-tmp-groups ?d)))
1076 (defvar gnus-category-mode-line-format-alist
1077 `((?u user-defined ?s)))
1079 (defvar gnus-category-line-format-spec nil)
1080 (defvar gnus-category-mode-line-format-spec nil)
1082 (defvar gnus-category-mode-map nil)
1083 (put 'gnus-category-mode 'mode-class 'special)
1085 (unless gnus-category-mode-map
1086 (setq gnus-category-mode-map (make-sparse-keymap))
1087 (suppress-keymap gnus-category-mode-map)
1089 (gnus-define-keys gnus-category-mode-map
1090 "q" gnus-category-exit
1091 "k" gnus-category-kill
1092 "c" gnus-category-copy
1093 "a" gnus-category-add
1094 "p" gnus-category-edit-predicate
1095 "g" gnus-category-edit-groups
1096 "s" gnus-category-edit-score
1097 "l" gnus-category-list
1099 "\C-c\C-i" gnus-info-find-node
1100 "\C-c\C-b" gnus-bug))
1102 (defvar gnus-category-menu-hook nil
1103 "*Hook run after the creation of the menu.")
1105 (defun gnus-category-make-menu-bar ()
1106 (gnus-turn-off-edit-menu 'category)
1107 (unless (boundp 'gnus-category-menu)
1109 gnus-category-menu gnus-category-mode-map ""
1111 ["Add" gnus-category-add t]
1112 ["Kill" gnus-category-kill t]
1113 ["Copy" gnus-category-copy t]
1114 ["Edit predicate" gnus-category-edit-predicate t]
1115 ["Edit score" gnus-category-edit-score t]
1116 ["Edit groups" gnus-category-edit-groups t]
1117 ["Exit" gnus-category-exit t]))
1119 (gnus-run-hooks 'gnus-category-menu-hook)))
1121 (defun gnus-category-mode ()
1122 "Major mode for listing and editing agent categories.
1124 All normal editing commands are switched off.
1125 \\<gnus-category-mode-map>
1126 For more in-depth information on this mode, read the manual
1127 (`\\[gnus-info-find-node]').
1129 The following commands are available:
1131 \\{gnus-category-mode-map}"
1133 (when (gnus-visual-p 'category-menu 'menu)
1134 (gnus-category-make-menu-bar))
1135 (kill-all-local-variables)
1136 (gnus-simplify-mode-line)
1137 (setq major-mode 'gnus-category-mode)
1138 (setq mode-name "Category")
1139 (gnus-set-default-directory)
1140 (setq mode-line-process nil)
1141 (use-local-map gnus-category-mode-map)
1142 (buffer-disable-undo)
1143 (setq truncate-lines t)
1144 (setq buffer-read-only t)
1145 (gnus-run-hooks 'gnus-category-mode-hook))
1147 (defalias 'gnus-category-position-point 'gnus-goto-colon)
1149 (defun gnus-category-insert-line (category)
1150 (let* ((gnus-tmp-name (car category))
1151 (gnus-tmp-groups (length (cadddr category))))
1153 (gnus-add-text-properties
1157 (eval gnus-category-line-format-spec))
1158 (list 'gnus-category gnus-tmp-name))))
1160 (defun gnus-enter-category-buffer ()
1161 "Go to the Category buffer."
1163 (gnus-category-setup-buffer)
1164 (gnus-configure-windows 'category)
1165 (gnus-category-prepare))
1167 (defun gnus-category-setup-buffer ()
1168 (unless (get-buffer gnus-category-buffer)
1170 (set-buffer (gnus-get-buffer-create gnus-category-buffer))
1171 (gnus-category-mode))))
1173 (defun gnus-category-prepare ()
1174 (gnus-set-format 'category-mode)
1175 (gnus-set-format 'category t)
1176 (let ((alist gnus-category-alist)
1177 (buffer-read-only nil))
1180 (gnus-category-insert-line (pop alist)))
1181 (goto-char (point-min))
1182 (gnus-category-position-point)))
1184 (defun gnus-category-name ()
1185 (or (get-text-property (gnus-point-at-bol) 'gnus-category)
1186 (error "No category on the current line")))
1188 (defun gnus-category-read ()
1189 "Read the category alist."
1190 (setq gnus-category-alist
1191 (or (gnus-agent-read-file
1192 (nnheader-concat gnus-agent-directory "lib/categories"))
1193 (list (list 'default 'short nil nil)))))
1195 (defun gnus-category-write ()
1196 "Write the category alist."
1197 (setq gnus-category-predicate-cache nil
1198 gnus-category-group-cache nil)
1199 (gnus-make-directory (nnheader-concat gnus-agent-directory "lib"))
1200 (with-temp-file (nnheader-concat gnus-agent-directory "lib/categories")
1201 (prin1 gnus-category-alist (current-buffer))))
1203 (defun gnus-category-edit-predicate (category)
1204 "Edit the predicate for CATEGORY."
1205 (interactive (list (gnus-category-name)))
1206 (let ((info (assq category gnus-category-alist)))
1208 (cadr info) (format "Editing the predicate for category %s" category)
1209 `(lambda (predicate)
1210 (setf (cadr (assq ',category gnus-category-alist)) predicate)
1211 (gnus-category-write)
1212 (gnus-category-list)))))
1214 (defun gnus-category-edit-score (category)
1215 "Edit the score expression for CATEGORY."
1216 (interactive (list (gnus-category-name)))
1217 (let ((info (assq category gnus-category-alist)))
1220 (format "Editing the score expression for category %s" category)
1222 (setf (caddr (assq ',category gnus-category-alist)) groups)
1223 (gnus-category-write)
1224 (gnus-category-list)))))
1226 (defun gnus-category-edit-groups (category)
1227 "Edit the group list for CATEGORY."
1228 (interactive (list (gnus-category-name)))
1229 (let ((info (assq category gnus-category-alist)))
1231 (cadddr info) (format "Editing the group list for category %s" category)
1233 (setf (cadddr (assq ',category gnus-category-alist)) groups)
1234 (gnus-category-write)
1235 (gnus-category-list)))))
1237 (defun gnus-category-kill (category)
1238 "Kill the current category."
1239 (interactive (list (gnus-category-name)))
1240 (let ((info (assq category gnus-category-alist))
1241 (buffer-read-only nil))
1243 (gnus-category-write)
1244 (setq gnus-category-alist (delq info gnus-category-alist))))
1246 (defun gnus-category-copy (category to)
1247 "Copy the current category."
1248 (interactive (list (gnus-category-name) (intern (read-string "New name: "))))
1249 (let ((info (assq category gnus-category-alist)))
1250 (push (list to (gnus-copy-sequence (cadr info))
1251 (gnus-copy-sequence (caddr info)) nil)
1252 gnus-category-alist)
1253 (gnus-category-write)
1254 (gnus-category-list)))
1256 (defun gnus-category-add (category)
1257 "Create a new category."
1258 (interactive "SCategory name: ")
1259 (when (assq category gnus-category-alist)
1260 (error "Category %s already exists" category))
1261 (push (list category 'false nil nil)
1262 gnus-category-alist)
1263 (gnus-category-write)
1264 (gnus-category-list))
1266 (defun gnus-category-list ()
1267 "List all categories."
1269 (gnus-category-prepare))
1271 (defun gnus-category-exit ()
1272 "Return to the group buffer."
1274 (kill-buffer (current-buffer))
1275 (gnus-configure-windows 'group t))
1277 ;; To avoid having 8-bit characters in the source file.
1278 (defvar gnus-category-not (list '! 'not (intern (format "%c" 172))))
1280 (defvar gnus-category-predicate-alist
1281 '((spam . gnus-agent-spam-p)
1282 (short . gnus-agent-short-p)
1283 (long . gnus-agent-long-p)
1284 (low . gnus-agent-low-scored-p)
1285 (high . gnus-agent-high-scored-p)
1286 (true . gnus-agent-true)
1287 (false . gnus-agent-false))
1288 "Mapping from short score predicate symbols to predicate functions.")
1290 (defun gnus-agent-spam-p ()
1291 "Say whether an article is spam or not."
1292 (unless gnus-agent-spam-hashtb
1293 (setq gnus-agent-spam-hashtb (gnus-make-hashtable 1000)))
1294 (if (not (equal (mail-header-references gnus-headers) ""))
1296 (let ((string (gnus-simplify-subject (mail-header-subject gnus-headers))))
1298 (gnus-gethash string gnus-agent-spam-hashtb)
1299 (gnus-sethash string t gnus-agent-spam-hashtb)))))
1301 (defun gnus-agent-short-p ()
1302 "Say whether an article is short or not."
1303 (< (mail-header-lines gnus-headers) gnus-agent-short-article))
1305 (defun gnus-agent-long-p ()
1306 "Say whether an article is long or not."
1307 (> (mail-header-lines gnus-headers) gnus-agent-long-article))
1309 (defun gnus-agent-low-scored-p ()
1310 "Say whether an article has a low score or not."
1311 (< gnus-score gnus-agent-low-score))
1313 (defun gnus-agent-high-scored-p ()
1314 "Say whether an article has a high score or not."
1315 (> gnus-score gnus-agent-high-score))
1317 (defun gnus-category-make-function (cat)
1318 "Make a function from category CAT."
1319 `(lambda () ,(gnus-category-make-function-1 cat)))
1321 (defun gnus-agent-true ()
1325 (defun gnus-agent-false ()
1329 (defun gnus-category-make-function-1 (cat)
1330 "Make a function from category CAT."
1332 ;; Functions are just returned as is.
1334 (gnus-functionp cat))
1335 `(,(or (cdr (assq cat gnus-category-predicate-alist))
1337 ;; More complex category.
1340 ((memq (car cat) '(& and))
1342 ((memq (car cat) '(| or))
1344 ((memq (car cat) gnus-category-not)
1346 ,@(mapcar 'gnus-category-make-function-1 (cdr cat))))
1348 (error "Unknown category type: %s" cat))))
1350 (defun gnus-get-predicate (predicate)
1351 "Return the predicate for CATEGORY."
1352 (or (cdr (assoc predicate gnus-category-predicate-cache))
1353 (cdar (push (cons predicate
1354 (gnus-category-make-function predicate))
1355 gnus-category-predicate-cache))))
1357 (defun gnus-group-category (group)
1358 "Return the category GROUP belongs to."
1359 (unless gnus-category-group-cache
1360 (setq gnus-category-group-cache (gnus-make-hashtable 1000))
1361 (let ((cs gnus-category-alist)
1363 (while (setq cat (pop cs))
1364 (setq groups (cadddr cat))
1366 (gnus-sethash (pop groups) cat gnus-category-group-cache)))))
1367 (or (gnus-gethash group gnus-category-group-cache)
1368 (assq 'default gnus-category-alist)))
1370 (defun gnus-agent-expire ()
1371 "Expire all old articles."
1373 (let ((methods gnus-agent-covered-methods)
1374 (day (- (time-to-days (current-time)) gnus-agent-expire-days))
1375 gnus-command-method sym group articles
1376 history overview file histories elem art nov-file low info
1377 unreads marked article orig lowest highest)
1379 (setq overview (gnus-get-buffer-create " *expire overview*"))
1380 (while (setq gnus-command-method (pop methods))
1381 (when (file-exists-p (gnus-agent-lib-file "active"))
1383 (insert-file-contents (gnus-agent-lib-file "active"))
1384 (gnus-active-to-gnus-format
1386 (setq orig (gnus-make-hashtable
1387 (count-lines (point-min) (point-max))))))
1388 (let ((expiry-hashtb (gnus-make-hashtable 1023)))
1389 (gnus-agent-open-history)
1391 (setq gnus-agent-current-history
1392 (setq history (gnus-agent-history-buffer))))
1393 (goto-char (point-min))
1394 (when (> (buffer-size) 1)
1395 (goto-char (point-min))
1397 (skip-chars-forward "^\t")
1398 (if (> (read (current-buffer)) day)
1399 ;; New article; we don't expire it.
1401 ;; Old article. Schedule it for possible nuking.
1403 (setq sym (let ((obarray expiry-hashtb))
1404 (read (current-buffer))))
1406 (set sym (cons (cons (read (current-buffer)) (point))
1407 (symbol-value sym)))
1408 (set sym (list (cons (read (current-buffer)) (point)))))
1409 (skip-chars-forward " "))
1411 ;; We now have all articles that can possibly be expired.
1414 (setq group (symbol-name sym)
1415 articles (sort (symbol-value sym) 'car-less-than-car)
1416 low (car (gnus-active group))
1417 info (gnus-get-info group)
1418 unreads (ignore-errors
1419 (gnus-list-of-unread-articles group))
1421 (gnus-uncompress-range
1422 (cdr (assq 'tick (gnus-info-marks info))))
1423 (gnus-uncompress-range
1425 (gnus-info-marks info)))))
1426 nov-file (gnus-agent-article-name ".overview" group)
1429 (gnus-agent-load-alist group)
1430 (gnus-message 5 "Expiring articles in %s" group)
1431 (set-buffer overview)
1433 (when (file-exists-p nov-file)
1434 (nnheader-insert-file-contents nov-file))
1435 (goto-char (point-min))
1437 (while (setq elem (pop articles))
1438 (setq article (car elem))
1439 (when (or (null low)
1441 gnus-agent-expire-all
1442 (and (not (memq article unreads))
1443 (not (memq article marked))))
1444 ;; Find and nuke the NOV line.
1445 (while (and (not (eobp))
1447 (setq art (read (current-buffer)))))
1450 (gnus-agent-article-name
1451 (number-to-string art) group))
1457 ;; Remove old NOV lines that have no articles.
1458 (gnus-delete-line)))
1463 ;; Nuke the article.
1464 (when (file-exists-p
1465 (setq file (gnus-agent-article-name
1466 (number-to-string article)
1469 ;; Schedule the history line for nuking.
1470 (push (cdr elem) histories)))
1471 (gnus-make-directory (file-name-directory nov-file))
1472 (let ((coding-system-for-write
1473 gnus-agent-file-coding-system))
1474 (write-region (point-min) (point-max) nov-file nil 'silent))
1475 ;; Delete the unwanted entries in the alist.
1476 (setq gnus-agent-article-alist
1477 (sort gnus-agent-article-alist 'car-less-than-car))
1478 (let* ((alist gnus-agent-article-alist)
1479 (prev (cons nil alist))
1483 (<= (caar alist) article))
1484 (if (or (not (cdar alist))
1486 (gnus-agent-article-name
1491 (push (caar alist) expired)
1492 (setcdr prev (setq alist (cdr alist))))
1494 alist (cdr alist))))
1495 (setq gnus-agent-article-alist (cdr first))
1496 (gnus-agent-save-alist group)
1497 ;; Mark all articles up to the first article
1498 ;; in `gnus-article-alist' as read.
1499 (when (and info (caar gnus-agent-article-alist))
1500 (setcar (nthcdr 2 info)
1503 (cons 1 (- (caar gnus-agent-article-alist) 1)))))
1504 ;; Maybe everything has been expired from `gnus-article-alist'
1505 ;; and so the above marking as read could not be conducted,
1506 ;; or there are expired article within the range of the alist.
1509 (or (not (caar gnus-agent-article-alist))
1511 (caar gnus-agent-article-alist))))
1512 (setcar (nthcdr 2 info)
1515 (nreverse expired))))
1517 (concat "(gnus-group-set-info '"
1518 (gnus-prin1-to-string info)
1521 (if (gnus-gethash group orig)
1522 (setcar (gnus-gethash group orig) lowest)
1523 (gnus-sethash group (cons lowest highest) orig))))
1525 (set-buffer history)
1526 (setq histories (nreverse (sort histories '<)))
1528 (goto-char (pop histories))
1530 (gnus-agent-save-history)
1531 (gnus-agent-close-history)
1532 (gnus-write-active-file
1533 (gnus-agent-lib-file "active") orig))
1534 (gnus-message 4 "Expiry...done")))))))
1537 (defun gnus-agent-batch ()
1539 (let ((init-file-user "")
1540 (gnus-always-read-dribble-file t))
1542 (gnus-group-send-drafts)
1543 (gnus-agent-fetch-session))
1545 (provide 'gnus-agent)
1547 ;;; gnus-agent.el ends here