1 ;;; gnus-agent.el --- unplugged support for Semi-gnus
2 ;; Copyright (C) 1997, 1998, 1999, 2000 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.
27 (eval-when-compile (require 'cl))
28 (eval-when-compile (require 'gnus-clfns))
36 (if (featurep 'xemacs)
39 (require 'gnus-group))
41 (defcustom gnus-agent-directory (nnheader-concat gnus-directory "agent/")
42 "Where the Gnus agent will store its files."
46 (defcustom gnus-agent-plugged-hook nil
47 "Hook run when plugging into the network."
51 (defcustom gnus-agent-unplugged-hook nil
52 "Hook run when unplugging from the network."
56 (defcustom gnus-agent-handle-level gnus-level-subscribed
57 "Groups on levels higher than this variable will be ignored by the Agent."
61 (defcustom gnus-agent-expire-days 7
62 "Read articles older than this will be expired."
66 (defcustom gnus-agent-expire-all nil
67 "If non-nil, also expire unread, ticked and dormant articles.
68 If nil, only read articles will be expired."
72 (defcustom gnus-agent-group-mode-hook nil
73 "Hook run in Agent group minor modes."
77 (defcustom gnus-agent-summary-mode-hook nil
78 "Hook run in Agent summary minor modes."
82 (defcustom gnus-agent-server-mode-hook nil
83 "Hook run in Agent summary minor modes."
87 (defcustom gnus-agent-confirmation-function 'y-or-n-p
88 "Function to confirm when error happens."
92 (defcustom gnus-agent-large-newsgroup nil
93 "*The number of articles which indicates a large newsgroup.
94 If the number of unread articles exceeds it, The number of articles to be
95 fetched will be limited to it. If not a positive integer, never consider it."
97 :type '(choice (const nil)
98 (integer :tag "Number")))
100 (defcustom gnus-agent-synchronize-flags 'ask
101 "Indicate if flags are synchronized when you plug in.
102 If this is `ask' the hook will query the user."
103 :type '(choice (const :tag "Always" t)
104 (const :tag "Never" nil)
105 (const :tag "Ask" ask))
108 ;;; Internal variables
110 (defvar gnus-agent-history-buffers nil)
111 (defvar gnus-agent-buffer-alist nil)
112 (defvar gnus-agent-article-alist nil)
113 (defvar gnus-agent-group-alist nil)
114 (defvar gnus-agent-covered-methods nil)
115 (defvar gnus-category-alist nil)
116 (defvar gnus-agent-current-history nil)
117 (defvar gnus-agent-overview-buffer nil)
118 (defvar gnus-category-predicate-cache nil)
119 (defvar gnus-category-group-cache nil)
120 (defvar gnus-agent-spam-hashtb nil)
121 (defvar gnus-agent-file-name nil)
122 (defvar gnus-agent-send-mail-function nil)
123 (defvar gnus-agent-file-coding-system 'raw-text)
126 (defvar gnus-headers)
133 (defun gnus-open-agent ()
135 (gnus-agent-read-servers)
137 (gnus-agent-create-buffer)
138 (add-hook 'gnus-group-mode-hook 'gnus-agent-mode)
139 (add-hook 'gnus-summary-mode-hook 'gnus-agent-mode)
140 (add-hook 'gnus-server-mode-hook 'gnus-agent-mode))
142 (defun gnus-agent-create-buffer ()
143 (if (gnus-buffer-live-p gnus-agent-overview-buffer)
145 (setq gnus-agent-overview-buffer
146 (gnus-get-buffer-create " *Gnus agent overview*"))
147 (with-current-buffer gnus-agent-overview-buffer
148 (set-buffer-multibyte t))
151 (gnus-add-shutdown 'gnus-close-agent 'gnus)
153 (defun gnus-close-agent ()
154 (setq gnus-agent-covered-methods nil
155 gnus-category-predicate-cache nil
156 gnus-category-group-cache nil
157 gnus-agent-spam-hashtb nil)
158 (gnus-kill-buffer gnus-agent-overview-buffer))
161 ;;; Utility functions
164 (defun gnus-agent-read-file (file)
165 "Load FILE and do a `read' there."
168 (nnheader-insert-file-contents file)
169 (goto-char (point-min))
170 (read (current-buffer)))))
172 (defsubst gnus-agent-method ()
173 (concat (symbol-name (car gnus-command-method)) "/"
174 (if (equal (cadr gnus-command-method) "")
176 (cadr gnus-command-method))))
178 (defsubst gnus-agent-directory ()
179 "Path of the Gnus agent directory."
180 (nnheader-concat gnus-agent-directory
181 (nnheader-translate-file-chars (gnus-agent-method)) "/"))
183 (defun gnus-agent-lib-file (file)
184 "The full path of the Gnus agent library FILE."
185 (concat (gnus-agent-directory) "agent.lib/" file))
187 ;;; Fetching setup functions.
189 (defun gnus-agent-start-fetch ()
190 "Initialize data structures for efficient fetching."
191 (gnus-agent-open-history)
192 (setq gnus-agent-current-history (gnus-agent-history-buffer))
193 (gnus-agent-create-buffer))
195 (defun gnus-agent-stop-fetch ()
196 "Save all data structures and clean up."
197 (gnus-agent-save-history)
198 (gnus-agent-close-history)
199 (setq gnus-agent-spam-hashtb nil)
201 (set-buffer nntp-server-buffer)
204 (defmacro gnus-agent-with-fetch (&rest forms)
207 (let ((gnus-agent-fetching t))
208 (gnus-agent-start-fetch)
210 (gnus-agent-stop-fetch)))
212 (put 'gnus-agent-with-fetch 'lisp-indent-function 0)
213 (put 'gnus-agent-with-fetch 'edebug-form-spec '(body))
219 (defvar gnus-agent-mode-hook nil
220 "Hook run when installing agent mode.")
222 (defvar gnus-agent-mode nil)
223 (defvar gnus-agent-mode-status '(gnus-agent-mode " Plugged"))
225 (defun gnus-agent-mode ()
226 "Minor mode for providing a agent support in Gnus buffers."
227 (let* ((buffer (progn (string-match "^gnus-\\(.*\\)-mode$"
228 (symbol-name major-mode))
229 (match-string 1 (symbol-name major-mode))))
230 (mode (intern (format "gnus-agent-%s-mode" buffer))))
231 (set (make-local-variable 'gnus-agent-mode) t)
233 (set (make-local-variable mode) t)
235 (when (gnus-visual-p 'agent-menu 'menu)
236 (funcall (intern (format "gnus-agent-%s-make-menu-bar" buffer))))
237 (unless (assq 'gnus-agent-mode minor-mode-alist)
238 (push gnus-agent-mode-status minor-mode-alist))
239 (unless (assq mode minor-mode-map-alist)
240 (push (cons mode (symbol-value (intern (format "gnus-agent-%s-mode-map"
242 minor-mode-map-alist))
243 (when (eq major-mode 'gnus-group-mode)
244 (gnus-agent-toggle-plugged gnus-plugged))
245 (gnus-run-hooks 'gnus-agent-mode-hook
246 (intern (format "gnus-agent-%s-mode-hook" buffer)))))
248 (defvar gnus-agent-group-mode-map (make-sparse-keymap))
249 (gnus-define-keys gnus-agent-group-mode-map
250 "Ju" gnus-agent-fetch-groups
251 "Jc" gnus-enter-category-buffer
252 "Jj" gnus-agent-toggle-plugged
253 "Js" gnus-agent-fetch-session
254 "JY" gnus-agent-synchronize-flags
255 "JS" gnus-group-send-drafts
256 "Ja" gnus-agent-add-group
257 "Jr" gnus-agent-remove-group)
259 (defun gnus-agent-group-make-menu-bar ()
260 (unless (boundp 'gnus-agent-group-menu)
262 gnus-agent-group-menu gnus-agent-group-mode-map ""
264 ["Toggle plugged" gnus-agent-toggle-plugged t]
265 ["List categories" gnus-enter-category-buffer t]
266 ["Send drafts" gnus-group-send-drafts gnus-plugged]
268 ["All" gnus-agent-fetch-session gnus-plugged]
269 ["Group" gnus-agent-fetch-group gnus-plugged])))))
271 (defvar gnus-agent-summary-mode-map (make-sparse-keymap))
272 (gnus-define-keys gnus-agent-summary-mode-map
273 "Jj" gnus-agent-toggle-plugged
274 "J#" gnus-agent-mark-article
275 "J\M-#" gnus-agent-unmark-article
276 "@" gnus-agent-toggle-mark
277 "Jc" gnus-agent-catchup)
279 (defun gnus-agent-summary-make-menu-bar ()
280 (unless (boundp 'gnus-agent-summary-menu)
282 gnus-agent-summary-menu gnus-agent-summary-mode-map ""
284 ["Toggle plugged" gnus-agent-toggle-plugged t]
285 ["Mark as downloadable" gnus-agent-mark-article t]
286 ["Unmark as downloadable" gnus-agent-unmark-article t]
287 ["Toggle mark" gnus-agent-toggle-mark t]
288 ["Catchup undownloaded" gnus-agent-catchup t]))))
290 (defvar gnus-agent-server-mode-map (make-sparse-keymap))
291 (gnus-define-keys gnus-agent-server-mode-map
292 "Jj" gnus-agent-toggle-plugged
293 "Ja" gnus-agent-add-server
294 "Jr" gnus-agent-remove-server)
296 (defun gnus-agent-server-make-menu-bar ()
297 (unless (boundp 'gnus-agent-server-menu)
299 gnus-agent-server-menu gnus-agent-server-mode-map ""
301 ["Toggle plugged" gnus-agent-toggle-plugged t]
302 ["Add" gnus-agent-add-server t]
303 ["Remove" gnus-agent-remove-server t]))))
305 (defun gnus-agent-toggle-plugged (plugged)
306 "Toggle whether Gnus is unplugged or not."
307 (interactive (list (not gnus-plugged)))
310 (setq gnus-plugged plugged)
311 (gnus-agent-possibly-synchronize-flags)
312 (gnus-run-hooks 'gnus-agent-plugged-hook)
313 (setcar (cdr gnus-agent-mode-status) " Plugged"))
314 (gnus-agent-close-connections)
315 (setq gnus-plugged plugged)
316 (gnus-run-hooks 'gnus-agent-unplugged-hook)
317 (setcar (cdr gnus-agent-mode-status) " Unplugged"))
318 (force-mode-line-update))
320 (defun gnus-agent-close-connections ()
321 "Close all methods covered by the Gnus agent."
322 (let ((methods gnus-agent-covered-methods))
324 (gnus-close-server (pop methods)))))
327 (defun gnus-unplugged ()
328 "Start Gnus unplugged."
330 (setq gnus-plugged nil)
334 (defun gnus-plugged ()
335 "Start Gnus plugged."
337 (setq gnus-plugged t)
341 (defun gnus-agentize ()
342 "Allow Gnus to be an offline newsreader.
343 The normal usage of this command is to put the following as the
344 last form in your `.gnus.el' file:
348 This will modify the `gnus-before-startup-hook', `gnus-post-method',
349 and `message-send-mail-function' variables, and install the Gnus
350 agent minor mode in all Gnus buffers."
353 (add-hook 'gnus-setup-news-hook 'gnus-agent-queue-setup)
354 (unless gnus-agent-send-mail-function
355 (setq gnus-agent-send-mail-function message-send-mail-function
356 message-send-mail-function 'gnus-agent-send-mail))
357 (unless gnus-agent-covered-methods
358 (setq gnus-agent-covered-methods (list gnus-select-method))))
360 (defun gnus-agent-queue-setup ()
361 "Make sure the queue group exists."
362 (unless (gnus-gethash "nndraft:queue" gnus-newsrc-hashtb)
363 (gnus-request-create-group "queue" '(nndraft ""))
364 (let ((gnus-level-default-subscribed 1))
365 (gnus-subscribe-group "nndraft:queue" nil '(nndraft "")))
366 (gnus-group-set-parameter
367 "nndraft:queue" 'gnus-dummy '((gnus-draft-mode)))))
369 (defun gnus-agent-send-mail ()
371 (funcall gnus-agent-send-mail-function)
372 (goto-char (point-min))
374 (concat "^" (regexp-quote mail-header-separator) "\n"))
376 (gnus-agent-insert-meta-information 'mail)
377 (gnus-request-accept-article "nndraft:queue" nil t t)))
379 (defun gnus-agent-insert-meta-information (type &optional method)
380 "Insert meta-information into the message that says how it's to be posted.
381 TYPE can be either `mail' or `news'. If the latter METHOD can
384 (message-remove-header gnus-agent-meta-information-header)
385 (goto-char (point-min))
386 (insert gnus-agent-meta-information-header ": "
387 (symbol-name type) " " (format "%S" method)
390 (while (search-backward "\n" nil t)
391 (replace-match "\\n" t t))))
393 (defun gnus-agent-restore-gcc ()
394 "Restore GCC field from saved header."
396 (goto-char (point-min))
397 (while (re-search-forward (concat gnus-agent-gcc-header ":") nil t)
398 (replace-match "Gcc:" 'fixedcase))))
400 (defun gnus-agent-any-covered-gcc ()
402 (message-narrow-to-headers)
403 (let* ((gcc (mail-fetch-field "gcc" nil t))
405 (mapcar 'gnus-inews-group-method
406 (message-unquote-tokens
407 (message-tokenize-header
410 (while (and (not covered) methods)
412 (member (car methods) gnus-agent-covered-methods)
413 methods (cdr methods)))
416 (defun gnus-agent-possibly-save-gcc ()
417 "Save GCC if Gnus is unplugged."
418 (when (and (not gnus-plugged) (gnus-agent-any-covered-gcc))
420 (goto-char (point-min))
421 (let ((case-fold-search t))
422 (while (re-search-forward "^gcc:" nil t)
423 (replace-match (concat gnus-agent-gcc-header ":") 'fixedcase))))))
425 (defun gnus-agent-possibly-do-gcc ()
426 "Do GCC if Gnus is plugged."
427 (when (or gnus-plugged (not (gnus-agent-any-covered-gcc)))
428 (gnus-inews-do-gcc)))
431 ;;; Group mode commands
434 (defun gnus-agent-fetch-groups (n)
435 "Put all new articles in the current groups into the Agent."
438 (error "Groups can't be fetched when Gnus is unplugged"))
439 (gnus-group-iterate n 'gnus-agent-fetch-group))
441 (defun gnus-agent-fetch-group (group)
442 "Put all new articles in GROUP into the Agent."
443 (interactive (list (gnus-group-group-name)))
445 (error "Groups can't be fetched when Gnus is unplugged"))
447 (error "No group on the current line"))
448 (let ((gnus-command-method (gnus-find-method-for-group group)))
449 (gnus-agent-with-fetch
450 (gnus-agent-fetch-group-1 group gnus-command-method)
451 (gnus-message 5 "Fetching %s...done" group))))
453 (defun gnus-agent-add-group (category arg)
454 "Add the current group to an agent category."
460 (mapcar (lambda (cat) (list (symbol-name (car cat))))
464 (let ((cat (assq category gnus-category-alist))
466 (gnus-group-iterate arg
468 (when (cadddr (setq c (gnus-group-category group)))
469 (setf (cadddr c) (delete group (cadddr c))))
470 (push group groups)))
471 (setf (cadddr cat) (nconc (cadddr cat) groups))
472 (gnus-category-write)))
474 (defun gnus-agent-remove-group (arg)
475 "Remove the current group from its agent category, if any."
478 (gnus-group-iterate arg
480 (when (cadddr (setq c (gnus-group-category group)))
481 (setf (cadddr c) (delete group (cadddr c))))))
482 (gnus-category-write)))
484 (defun gnus-agent-synchronize-flags ()
485 "Synchronize unplugged flags with servers."
488 (dolist (gnus-command-method gnus-agent-covered-methods)
489 (when (file-exists-p (gnus-agent-lib-file "flags"))
490 (gnus-agent-synchronize-flags-server gnus-command-method)))))
492 (defun gnus-agent-possibly-synchronize-flags ()
493 "Synchronize flags according to `gnus-agent-synchronize-flags'."
496 (dolist (gnus-command-method gnus-agent-covered-methods)
497 (when (file-exists-p (gnus-agent-lib-file "flags"))
498 (gnus-agent-possibly-synchronize-flags-server gnus-command-method)))))
500 (defun gnus-agent-synchronize-flags-server (method)
501 "Synchronize flags set when unplugged for server."
502 (let ((gnus-command-method method))
503 (when (file-exists-p (gnus-agent-lib-file "flags"))
504 (set-buffer (get-buffer-create " *Gnus Agent flag synchronize*"))
506 (nnheader-insert-file-contents (gnus-agent-lib-file "flags"))
507 (if (null (gnus-check-server gnus-command-method))
508 (message "Couldn't open server %s" (nth 1 gnus-command-method))
510 (if (null (eval (read (current-buffer))))
511 (progn (forward-line)
513 (write-file (gnus-agent-lib-file "flags"))
514 (error "Couldn't set flags from file %s"
515 (gnus-agent-lib-file "flags"))))
516 (delete-file (gnus-agent-lib-file "flags")))
519 (defun gnus-agent-possibly-synchronize-flags-server (method)
520 "Synchronize flags for server according to `gnus-agent-synchronize-flags'."
521 (when (or (and gnus-agent-synchronize-flags
522 (not (eq gnus-agent-synchronize-flags 'ask)))
523 (and (eq gnus-agent-synchronize-flags 'ask)
524 (gnus-y-or-n-p (format "Synchronize flags on server `%s'? "
526 (gnus-agent-synchronize-flags-server method)))
529 ;;; Server mode commands
532 (defun gnus-agent-add-server (server)
533 "Enroll SERVER in the agent program."
534 (interactive (list (gnus-server-server-name)))
536 (error "No server on the current line"))
537 (let ((method (gnus-server-get-method nil (gnus-server-server-name))))
538 (when (member method gnus-agent-covered-methods)
539 (error "Server already in the agent program"))
540 (push method gnus-agent-covered-methods)
541 (gnus-agent-write-servers)
542 (message "Entered %s into the Agent" server)))
544 (defun gnus-agent-remove-server (server)
545 "Remove SERVER from the agent program."
546 (interactive (list (gnus-server-server-name)))
548 (error "No server on the current line"))
549 (let ((method (gnus-server-get-method nil (gnus-server-server-name))))
550 (unless (member method gnus-agent-covered-methods)
551 (error "Server not in the agent program"))
552 (setq gnus-agent-covered-methods
553 (delete method gnus-agent-covered-methods))
554 (gnus-agent-write-servers)
555 (message "Removed %s from the agent" server)))
557 (defun gnus-agent-read-servers ()
558 "Read the alist of covered servers."
559 (setq gnus-agent-covered-methods
560 (gnus-agent-read-file
561 (nnheader-concat gnus-agent-directory "lib/servers"))))
563 (defun gnus-agent-write-servers ()
564 "Write the alist of covered servers."
565 (gnus-make-directory (nnheader-concat gnus-agent-directory "lib"))
566 (let ((coding-system-for-write nnheader-file-coding-system)
567 (output-coding-system nnheader-file-coding-system)
568 (file-name-coding-system nnmail-pathname-coding-system)
569 (pathname-coding-system nnmail-pathname-coding-system))
570 (with-temp-file (nnheader-concat gnus-agent-directory "lib/servers")
571 (prin1 gnus-agent-covered-methods (current-buffer)))))
577 (defun gnus-agent-mark-article (n &optional unmark)
578 "Mark the next N articles as downloadable.
579 If N is negative, mark backward instead. If UNMARK is non-nil, remove
580 the mark instead. The difference between N and the actual number of
581 articles marked is returned."
583 (let ((backward (< n 0))
588 (gnus-summary-set-agent-mark
589 (gnus-summary-article-number) unmark)
590 (zerop (gnus-summary-next-subject (if backward -1 1) nil t))))
593 (gnus-message 7 "No more articles"))
594 (gnus-summary-recenter)
595 (gnus-summary-position-point)
598 (defun gnus-agent-unmark-article (n)
599 "Remove the downloadable mark from the next N articles.
600 If N is negative, unmark backward instead. The difference between N and
601 the actual number of articles unmarked is returned."
603 (gnus-agent-mark-article n t))
605 (defun gnus-agent-toggle-mark (n)
606 "Toggle the downloadable mark from the next N articles.
607 If N is negative, toggle backward instead. The difference between N and
608 the actual number of articles toggled is returned."
610 (gnus-agent-mark-article n 'toggle))
612 (defun gnus-summary-set-agent-mark (article &optional unmark)
613 "Mark ARTICLE as downloadable."
614 (let ((unmark (if (and (not (null unmark)) (not (eq t unmark)))
615 (memq article gnus-newsgroup-downloadable)
619 (setq gnus-newsgroup-downloadable
620 (delq article gnus-newsgroup-downloadable))
621 (push article gnus-newsgroup-undownloaded))
622 (setq gnus-newsgroup-undownloaded
623 (delq article gnus-newsgroup-undownloaded))
624 (push article gnus-newsgroup-downloadable))
625 (gnus-summary-update-mark
626 (if unmark gnus-undownloaded-mark gnus-downloadable-mark)
629 (defun gnus-agent-get-undownloaded-list ()
630 "Mark all unfetched articles as read."
631 (let ((gnus-command-method (gnus-find-method-for-group gnus-newsgroup-name)))
632 (when (and (not gnus-plugged)
633 (gnus-agent-method-p gnus-command-method))
634 (gnus-agent-load-alist gnus-newsgroup-name)
635 ;; First mark all undownloaded articles as undownloaded.
636 (let ((articles (append gnus-newsgroup-unreads
637 gnus-newsgroup-marked
638 gnus-newsgroup-dormant))
640 (while (setq article (pop articles))
641 (unless (or (cdr (assq article gnus-agent-article-alist))
642 (memq article gnus-newsgroup-downloadable)
643 (memq article gnus-newsgroup-cached))
644 (push article gnus-newsgroup-undownloaded))))
645 ;; Then mark downloaded downloadable as not-downloadable,
646 ;; if you get my drift.
647 (let ((articles gnus-newsgroup-downloadable)
649 (while (setq article (pop articles))
650 (when (cdr (assq article gnus-agent-article-alist))
651 (setq gnus-newsgroup-downloadable
652 (delq article gnus-newsgroup-downloadable))))))))
654 (defun gnus-agent-catchup ()
655 "Mark all undownloaded articles as read."
658 (while gnus-newsgroup-undownloaded
659 (gnus-summary-mark-article
660 (pop gnus-newsgroup-undownloaded) gnus-catchup-mark)))
661 (gnus-summary-position-point))
664 ;;; Internal functions
667 (defun gnus-agent-save-active (method)
668 (gnus-agent-save-active-1 method 'gnus-active-to-gnus-format))
670 (defun gnus-agent-save-active-1 (method function)
671 (when (gnus-agent-method-p method)
672 (let* ((gnus-command-method method)
673 (new (gnus-make-hashtable (count-lines (point-min) (point-max))))
674 (file (gnus-agent-lib-file "active")))
675 (funcall function nil new)
676 (gnus-agent-write-active file new)
678 (insert-file-contents-as-coding-system gnus-agent-file-coding-system
681 (defun gnus-agent-write-active (file new)
682 (let ((orig (gnus-make-hashtable (count-lines (point-min) (point-max))))
683 (file (gnus-agent-lib-file "active"))
685 (when (file-exists-p file)
687 (insert-file-contents-as-coding-system gnus-agent-file-coding-system
689 (gnus-active-to-gnus-format nil orig))
692 (when (and sym (boundp sym))
693 (if (and (boundp (setq osym (intern (symbol-name sym) orig)))
694 (setq elem (symbol-value osym)))
695 (setcdr elem (cdr (symbol-value sym)))
696 (set (intern (symbol-name sym) orig) (symbol-value sym)))))
698 (gnus-make-directory (file-name-directory file))
699 ;; The hashtable contains real names of groups, no more prefix
700 ;; removing, so set `full' to `t'.
701 (gnus-write-active-file file orig t)))
703 (defun gnus-agent-save-groups (method)
704 (gnus-agent-save-active-1 method 'gnus-groups-to-gnus-format))
706 (defun gnus-agent-save-group-info (method group active)
707 (when (gnus-agent-method-p method)
708 (let* ((gnus-command-method method)
709 (coding-system-for-write nnheader-file-coding-system)
710 (output-coding-system nnheader-file-coding-system)
711 (file-name-coding-system nnmail-pathname-coding-system)
712 (pathname-coding-system nnmail-pathname-coding-system)
713 (file (gnus-agent-lib-file "active"))
715 (gnus-make-directory (file-name-directory file))
717 (when (file-exists-p file)
718 (nnheader-insert-file-contents file))
719 (goto-char (point-min))
720 (when (re-search-forward
721 (concat "^" (regexp-quote group) " ") nil t)
724 (narrow-to-region (match-beginning 0)
728 (setq oactive (car (nnmail-parse-active)))))
730 (insert (format "%S %d %d y\n" (intern group)
732 (or (car oactive) (car active))))
733 (goto-char (point-max))
734 (while (search-backward "\\." nil t)
737 (defun gnus-agent-group-path (group)
738 "Translate GROUP into a path."
739 (if nnmail-use-long-file-names
740 (gnus-group-real-name group)
741 (nnheader-translate-file-chars
742 (nnheader-replace-chars-in-string
743 (nnheader-replace-duplicate-chars-in-string
744 (nnheader-replace-chars-in-string
745 (gnus-group-real-name group)
752 (defun gnus-agent-method-p (method)
753 "Say whether METHOD is covered by the agent."
754 (member method gnus-agent-covered-methods))
756 (defun gnus-agent-get-function (method)
757 (if (and (not gnus-plugged)
758 (gnus-agent-method-p method))
764 ;;; History functions
766 (defun gnus-agent-history-buffer ()
767 (cdr (assoc (gnus-agent-method) gnus-agent-history-buffers)))
769 (defun gnus-agent-open-history ()
771 (push (cons (gnus-agent-method)
772 (set-buffer (gnus-get-buffer-create
773 (format " *Gnus agent %s history*"
774 (gnus-agent-method)))))
775 gnus-agent-history-buffers)
778 (let ((file (gnus-agent-lib-file "history")))
779 (when (file-exists-p file)
780 (nnheader-insert-file-contents file))
781 (set (make-local-variable 'gnus-agent-file-name) file))))
783 (defun gnus-agent-save-history ()
785 (set-buffer gnus-agent-current-history)
786 (gnus-make-directory (file-name-directory gnus-agent-file-name))
787 (write-region-as-coding-system
788 gnus-agent-file-coding-system
789 (1+ (point-min)) (point-max) gnus-agent-file-name nil 'silent)))
791 (defun gnus-agent-close-history ()
792 (when (gnus-buffer-live-p gnus-agent-current-history)
793 (kill-buffer gnus-agent-current-history)
794 (setq gnus-agent-history-buffers
795 (delq (assoc (gnus-agent-method) gnus-agent-history-buffers)
796 gnus-agent-history-buffers))))
798 (defun gnus-agent-enter-history (id group-arts date)
800 (set-buffer gnus-agent-current-history)
801 (goto-char (point-max))
803 (insert id "\t" (number-to-string date) "\t")
805 (insert (format "%S" (intern (caar group-arts)))
806 " " (number-to-string (cdr (pop group-arts)))
809 (while (search-backward "\\." p t)
812 (defun gnus-agent-article-in-history-p (id)
814 (set-buffer (gnus-agent-history-buffer))
815 (goto-char (point-min))
816 (search-forward (concat "\n" id "\t") nil t)))
818 (defun gnus-agent-history-path (id)
820 (set-buffer (gnus-agent-history-buffer))
821 (goto-char (point-min))
822 (when (search-forward (concat "\n" id "\t") nil t)
823 (let ((method (gnus-agent-method)))
825 (while (not (numberp (setq group (read (current-buffer)))))
826 (push (concat method "/" group) paths))
827 (nreverse paths))))))
833 (defun gnus-agent-fetch-articles (group articles)
834 "Fetch ARTICLES from GROUP and put them into the Agent."
836 ;; Prune off articles that we have already fetched.
838 (cdr (assq (car articles) gnus-agent-article-alist)))
840 (let ((arts articles))
842 (if (cdr (assq (cadr arts) gnus-agent-article-alist))
843 (setcdr arts (cddr arts))
844 (setq arts (cdr arts)))))
847 (gnus-agent-directory)
848 (gnus-agent-group-path group) "/"))
849 (date (time-to-days (current-time)))
852 (gnus-make-directory dir)
853 (gnus-message 7 "Fetching articles for %s..." group)
854 ;; Fetch the articles from the backend.
855 (if (gnus-check-backend-function 'retrieve-articles group)
856 (setq pos (gnus-retrieve-articles articles group))
859 (while (setq article (pop articles))
861 (gnus-backlog-request-article group article
863 (gnus-request-article article group))
864 (goto-char (point-max))
865 (push (cons article (point)) pos)
866 (insert-buffer-substring nntp-server-buffer)))
867 (copy-to-buffer nntp-server-buffer (point-min) (point-max))
868 (setq pos (nreverse pos)))))
869 ;; Then save these articles into the Agent.
871 (set-buffer nntp-server-buffer)
873 (narrow-to-region (cdar pos) (or (cdadr pos) (point-max)))
874 (goto-char (point-min))
875 (when (search-forward "\n\n" nil t)
876 (when (search-backward "\nXrefs: " nil t)
877 ;; Handle crossposting.
878 (skip-chars-forward "^ ")
879 (skip-chars-forward " ")
881 (while (looking-at "\\([^: \n]+\\):\\([0-9]+\\) +")
882 (push (cons (buffer-substring (match-beginning 1)
884 (buffer-substring (match-beginning 2)
887 (goto-char (match-end 0)))
888 (gnus-agent-crosspost crosses (caar pos))))
889 (goto-char (point-min))
890 (if (not (re-search-forward "^Message-ID: *<\\([^>\n]+\\)>" nil t))
891 (setq id "No-Message-ID-in-article")
892 (setq id (buffer-substring (match-beginning 1) (match-end 1))))
893 (write-region-as-coding-system
894 gnus-agent-file-coding-system
895 (point-min) (point-max)
896 (concat dir (number-to-string (caar pos))) nil 'silent)
897 (when (setq elem (assq (caar pos) gnus-agent-article-alist))
899 (gnus-agent-enter-history
900 id (or crosses (list (cons group (caar pos)))) date)
903 (gnus-agent-save-alist group)))))
905 (defun gnus-agent-crosspost (crosses article)
906 (let (gnus-agent-article-alist group alist beg end)
908 (set-buffer gnus-agent-overview-buffer)
909 (when (nnheader-find-nov-line article)
912 (setq end (progn (forward-line 1) (point)))))
914 (setq group (caar crosses))
915 (unless (setq alist (assoc group gnus-agent-group-alist))
916 (push (setq alist (list group (gnus-agent-load-alist (caar crosses))))
917 gnus-agent-group-alist))
918 (setcdr alist (cons (cons (cdar crosses) t) (cdr alist)))
920 (set-buffer (gnus-get-buffer-create (format " *Gnus agent overview %s*"
922 (when (= (point-max) (point-min))
923 (push (cons group (current-buffer)) gnus-agent-buffer-alist)
925 (nnheader-insert-file-contents
926 (gnus-agent-article-name ".overview" group))))
927 (nnheader-find-nov-line (string-to-number (cdar crosses)))
928 (insert (string-to-number (cdar crosses)))
929 (insert-buffer-substring gnus-agent-overview-buffer beg end))
932 (defun gnus-agent-flush-cache ()
934 (while gnus-agent-buffer-alist
935 (set-buffer (cdar gnus-agent-buffer-alist))
936 (write-region-as-coding-system
937 gnus-agent-file-coding-system
938 (point-min) (point-max)
939 (gnus-agent-article-name ".overview"
940 (caar gnus-agent-buffer-alist))
942 (pop gnus-agent-buffer-alist))
943 (while gnus-agent-group-alist
944 (with-temp-file (caar gnus-agent-group-alist)
945 (princ (cdar gnus-agent-group-alist))
947 (pop gnus-agent-group-alist))))
949 (defun gnus-agent-fetch-headers (group &optional force)
950 (let* ((articles (gnus-list-of-unread-articles group))
951 (len (length articles))
952 (gnus-decode-encoded-word-function 'identity)
953 (file (gnus-agent-article-name ".overview" group))
955 ;; Check the number of articles is not too large.
956 (when (and (integerp gnus-agent-large-newsgroup)
957 (< 0 gnus-agent-large-newsgroup))
958 (and (< 0 (setq i (- len gnus-agent-large-newsgroup)))
959 (setq articles (nthcdr i articles))))
960 ;; add article with marks to list of article headers we want to fetch.
961 (dolist (arts (gnus-info-marks (gnus-get-info group)))
962 (setq articles (gnus-union (gnus-uncompress-sequence (cdr arts))
964 (setq articles (sort articles '<))
965 ;; Remove known articles.
966 (when (gnus-agent-load-alist group)
967 (setq articles (gnus-sorted-intersection
969 (gnus-uncompress-range
970 (cons (1+ (caar (last gnus-agent-article-alist)))
971 (cdr (gnus-active group)))))))
973 (gnus-make-directory (nnheader-translate-file-chars
974 (file-name-directory file) t))
976 (gnus-message 7 "Fetching headers for %s..." group)
978 (set-buffer nntp-server-buffer)
979 (unless (eq 'nov (gnus-retrieve-headers articles group))
980 (nnvirtual-convert-headers))
981 ;; Save these headers for later processing.
982 (copy-to-buffer gnus-agent-overview-buffer (point-min) (point-max))
983 (when (file-exists-p file)
984 (gnus-agent-braid-nov group articles file))
985 (write-region-as-coding-system
986 gnus-agent-file-coding-system
987 (point-min) (point-max) file nil 'silent)
988 (gnus-agent-save-alist group articles nil)
989 (gnus-agent-enter-history
990 "last-header-fetched-for-session"
991 (list (cons group (nth (- (length articles) 1) articles)))
992 (time-to-days (current-time)))
995 (defsubst gnus-agent-copy-nov-line (article)
997 (set-buffer gnus-agent-overview-buffer)
999 (if (eq article (read (current-buffer)))
1000 (setq e (progn (forward-line 1) (point)))
1004 (set-buffer nntp-server-buffer)
1005 (insert-buffer-substring gnus-agent-overview-buffer b e)))
1007 (defun gnus-agent-braid-nov (group articles file)
1008 (set-buffer gnus-agent-overview-buffer)
1009 (goto-char (point-min))
1010 (set-buffer nntp-server-buffer)
1012 (nnheader-insert-file-contents file)
1013 (goto-char (point-max))
1014 (if (or (= (point-min) (point-max))
1017 (< (read (current-buffer)) (car articles))))
1018 ;; We have only headers that are after the older headers,
1019 ;; so we just append them.
1021 (goto-char (point-max))
1022 (insert-buffer-substring gnus-agent-overview-buffer))
1023 ;; We do it the hard way.
1024 (nnheader-find-nov-line (car articles))
1025 (gnus-agent-copy-nov-line (car articles))
1027 (while (and articles
1029 (while (and (not (eobp))
1030 (< (read (current-buffer)) (car articles)))
1034 (gnus-agent-copy-nov-line (car articles))
1035 (setq articles (cdr articles))))
1038 (set-buffer gnus-agent-overview-buffer)
1041 (set-buffer nntp-server-buffer)
1042 (insert-buffer-substring gnus-agent-overview-buffer b e)))))
1044 (defun gnus-agent-load-alist (group &optional dir)
1045 "Load the article-state alist for GROUP."
1046 (setq gnus-agent-article-alist
1047 (gnus-agent-read-file
1049 (concat dir ".agentview")
1050 (gnus-agent-article-name ".agentview" group)))))
1052 (defun gnus-agent-save-alist (group &optional articles state dir)
1053 "Save the article-state alist for GROUP."
1054 (let ((file-name-coding-system nnmail-pathname-coding-system)
1055 (pathname-coding-system nnmail-pathname-coding-system))
1056 (with-temp-file (if dir
1057 (concat dir ".agentview")
1058 (gnus-agent-article-name ".agentview" group))
1059 (princ (setq gnus-agent-article-alist
1060 (nconc gnus-agent-article-alist
1061 (mapcar (lambda (article) (cons article state))
1066 (defun gnus-agent-article-name (article group)
1067 (concat (gnus-agent-directory) (gnus-agent-group-path group) "/"
1068 (if (stringp article) article (string-to-number article))))
1071 (defun gnus-agent-batch-fetch ()
1072 "Start Gnus and fetch session."
1075 (let ((gnus-agent-confirmation-function 'gnus-agent-batch-confirmation))
1076 (gnus-agent-fetch-session))
1079 (defun gnus-agent-fetch-session ()
1080 "Fetch all articles and headers that are eligible for fetching."
1082 (unless gnus-agent-covered-methods
1083 (error "No servers are covered by the Gnus agent"))
1084 (unless gnus-plugged
1085 (error "Can't fetch articles while Gnus is unplugged"))
1086 (let ((methods gnus-agent-covered-methods)
1087 groups group gnus-command-method)
1092 (setq gnus-command-method (car methods))
1093 (when (or (gnus-server-opened gnus-command-method)
1094 (gnus-open-server gnus-command-method))
1095 (setq groups (gnus-groups-from-server (car methods)))
1096 (gnus-agent-with-fetch
1097 (while (setq group (pop groups))
1098 (when (<= (gnus-group-level group) gnus-agent-handle-level)
1099 (gnus-agent-fetch-group-1 group gnus-command-method))))))
1101 (unless (funcall gnus-agent-confirmation-function
1102 (format "Error (%s). Continue? " err))
1103 (error "Cannot fetch articles into the Gnus agent.")))
1105 (unless (funcall gnus-agent-confirmation-function
1106 (format "Quit (%s). Continue? " err))
1107 (signal 'quit "Cannot fetch articles into the Gnus agent."))))
1109 (gnus-message 6 "Finished fetching articles into the Gnus agent"))))
1111 (defun gnus-agent-fetch-group-1 (group method)
1113 (let ((gnus-command-method method)
1114 (gnus-newsgroup-name group)
1115 gnus-newsgroup-dependencies gnus-newsgroup-headers
1116 gnus-newsgroup-scored gnus-headers gnus-score
1117 gnus-use-cache articles arts
1118 category predicate info marks score-param
1119 (gnus-summary-expunge-below gnus-summary-expunge-below)
1120 (gnus-summary-mark-below gnus-summary-mark-below)
1121 (gnus-orphan-score gnus-orphan-score)
1122 ;; Maybe some other gnus-summary local variables should also
1125 (unless (gnus-check-group group)
1126 (error "Can't open server for %s" group))
1128 (when (and (or (gnus-active group) (gnus-activate-group group))
1129 (setq articles (gnus-agent-fetch-headers group))
1130 (let ((nntp-server-buffer gnus-agent-overview-buffer))
1131 ;; Parse them and see which articles we want to fetch.
1132 (setq gnus-newsgroup-dependencies
1133 (make-vector (length articles) 0))
1134 (setq gnus-newsgroup-headers
1135 (gnus-get-newsgroup-headers-xover articles nil nil
1137 ;; `gnus-agent-overview-buffer' may be killed for
1138 ;; timeout reason. If so, recreate it.
1139 (gnus-agent-create-buffer)))
1140 (setq category (gnus-group-category group))
1143 (or (gnus-group-find-parameter group 'agent-predicate t)
1145 (if (memq (caaddr predicate) '(gnus-agent-true gnus-agent-false))
1146 ;; Simple implementation
1148 (and (eq (caaddr predicate) 'gnus-agent-true) articles))
1151 (or (gnus-group-get-parameter group 'agent-score t)
1153 ;; Translate score-param into real one
1156 ((eq score-param 'file)
1157 (setq score-param (gnus-all-score-files group)))
1158 ((stringp (car score-param)))
1160 (setq score-param (list (list score-param)))))
1162 (gnus-score-headers score-param))
1163 (while (setq gnus-headers (pop gnus-newsgroup-headers))
1165 (or (cdr (assq (mail-header-number gnus-headers)
1166 gnus-newsgroup-scored))
1167 gnus-summary-default-score))
1168 (when (funcall predicate)
1169 (push (mail-header-number gnus-headers)
1171 ;; Fetch the articles.
1173 (gnus-agent-fetch-articles group arts)))
1174 ;; Perhaps we have some additional articles to fetch.
1175 (setq arts (assq 'download (gnus-info-marks
1176 (setq info (gnus-get-info group)))))
1178 (gnus-agent-fetch-articles
1179 group (gnus-uncompress-range (cdr arts)))
1180 (setq marks (delq arts (gnus-info-marks info)))
1181 (gnus-info-set-marks info marks)
1183 (concat "(gnus-group-set-info '"
1184 (gnus-prin1-to-string info)
1188 ;;; Agent Category Mode
1191 (defvar gnus-category-mode-hook nil
1192 "Hook run in `gnus-category-mode' buffers.")
1194 (defvar gnus-category-line-format " %(%20c%): %g\n"
1195 "Format of category lines.")
1197 (defvar gnus-category-mode-line-format "Gnus: %%b"
1198 "The format specification for the category mode line.")
1200 (defvar gnus-agent-short-article 100
1201 "Articles that have fewer lines than this are short.")
1203 (defvar gnus-agent-long-article 200
1204 "Articles that have more lines than this are long.")
1206 (defvar gnus-agent-low-score 0
1207 "Articles that have a score lower than this have a low score.")
1209 (defvar gnus-agent-high-score 0
1210 "Articles that have a score higher than this have a high score.")
1213 ;;; Internal variables.
1215 (defvar gnus-category-buffer "*Agent Category*")
1217 (defvar gnus-category-line-format-alist
1218 `((?c gnus-tmp-name ?s)
1219 (?g gnus-tmp-groups ?d)))
1221 (defvar gnus-category-mode-line-format-alist
1222 `((?u user-defined ?s)))
1224 (defvar gnus-category-line-format-spec nil)
1225 (defvar gnus-category-mode-line-format-spec nil)
1227 (defvar gnus-category-mode-map nil)
1228 (put 'gnus-category-mode 'mode-class 'special)
1230 (unless gnus-category-mode-map
1231 (setq gnus-category-mode-map (make-sparse-keymap))
1232 (suppress-keymap gnus-category-mode-map)
1234 (gnus-define-keys gnus-category-mode-map
1235 "q" gnus-category-exit
1236 "k" gnus-category-kill
1237 "c" gnus-category-copy
1238 "a" gnus-category-add
1239 "p" gnus-category-edit-predicate
1240 "g" gnus-category-edit-groups
1241 "s" gnus-category-edit-score
1242 "l" gnus-category-list
1244 "\C-c\C-i" gnus-info-find-node
1245 "\C-c\C-b" gnus-bug))
1247 (defvar gnus-category-menu-hook nil
1248 "*Hook run after the creation of the menu.")
1250 (defun gnus-category-make-menu-bar ()
1251 (gnus-turn-off-edit-menu 'category)
1252 (unless (boundp 'gnus-category-menu)
1254 gnus-category-menu gnus-category-mode-map ""
1256 ["Add" gnus-category-add t]
1257 ["Kill" gnus-category-kill t]
1258 ["Copy" gnus-category-copy t]
1259 ["Edit predicate" gnus-category-edit-predicate t]
1260 ["Edit score" gnus-category-edit-score t]
1261 ["Edit groups" gnus-category-edit-groups t]
1262 ["Exit" gnus-category-exit t]))
1264 (gnus-run-hooks 'gnus-category-menu-hook)))
1266 (defun gnus-category-mode ()
1267 "Major mode for listing and editing agent categories.
1269 All normal editing commands are switched off.
1270 \\<gnus-category-mode-map>
1271 For more in-depth information on this mode, read the manual
1272 (`\\[gnus-info-find-node]').
1274 The following commands are available:
1276 \\{gnus-category-mode-map}"
1278 (when (gnus-visual-p 'category-menu 'menu)
1279 (gnus-category-make-menu-bar))
1280 (kill-all-local-variables)
1281 (gnus-simplify-mode-line)
1282 (setq major-mode 'gnus-category-mode)
1283 (setq mode-name "Category")
1284 (gnus-set-default-directory)
1285 (setq mode-line-process nil)
1286 (use-local-map gnus-category-mode-map)
1287 (buffer-disable-undo)
1288 (setq truncate-lines t)
1289 (setq buffer-read-only t)
1290 (gnus-run-hooks 'gnus-category-mode-hook))
1292 (defalias 'gnus-category-position-point 'gnus-goto-colon)
1294 (defun gnus-category-insert-line (category)
1295 (let* ((gnus-tmp-name (car category))
1296 (gnus-tmp-groups (length (cadddr category))))
1298 (gnus-add-text-properties
1302 (eval gnus-category-line-format-spec))
1303 (list 'gnus-category gnus-tmp-name))))
1305 (defun gnus-enter-category-buffer ()
1306 "Go to the Category buffer."
1308 (gnus-category-setup-buffer)
1309 (gnus-configure-windows 'category)
1310 (gnus-category-prepare))
1312 (defun gnus-category-setup-buffer ()
1313 (unless (get-buffer gnus-category-buffer)
1315 (set-buffer (gnus-get-buffer-create gnus-category-buffer))
1316 (gnus-category-mode))))
1318 (defun gnus-category-prepare ()
1319 (gnus-set-format 'category-mode)
1320 (gnus-set-format 'category t)
1321 (let ((alist gnus-category-alist)
1322 (buffer-read-only nil))
1325 (gnus-category-insert-line (pop alist)))
1326 (goto-char (point-min))
1327 (gnus-category-position-point)))
1329 (defun gnus-category-name ()
1330 (or (get-text-property (gnus-point-at-bol) 'gnus-category)
1331 (error "No category on the current line")))
1333 (defun gnus-category-read ()
1334 "Read the category alist."
1335 (setq gnus-category-alist
1336 (or (gnus-agent-read-file
1337 (nnheader-concat gnus-agent-directory "lib/categories"))
1338 (list (list 'default 'short nil nil)))))
1340 (defun gnus-category-write ()
1341 "Write the category alist."
1342 (setq gnus-category-predicate-cache nil
1343 gnus-category-group-cache nil)
1344 (gnus-make-directory (nnheader-concat gnus-agent-directory "lib"))
1345 (with-temp-file (nnheader-concat gnus-agent-directory "lib/categories")
1346 (prin1 gnus-category-alist (current-buffer))))
1348 (defun gnus-category-edit-predicate (category)
1349 "Edit the predicate for CATEGORY."
1350 (interactive (list (gnus-category-name)))
1351 (let ((info (assq category gnus-category-alist)))
1353 (cadr info) (format "Editing the predicate for category %s" category)
1354 `(lambda (predicate)
1355 (setcar (cdr (assq ',category gnus-category-alist)) predicate)
1356 (gnus-category-write)
1357 (gnus-category-list)))))
1359 (defun gnus-category-edit-score (category)
1360 "Edit the score expression for CATEGORY."
1361 (interactive (list (gnus-category-name)))
1362 (let ((info (assq category gnus-category-alist)))
1365 (format "Editing the score expression for category %s" category)
1367 (setcar (nthcdr 2 (assq ',category gnus-category-alist)) groups)
1368 (gnus-category-write)
1369 (gnus-category-list)))))
1371 (defun gnus-category-edit-groups (category)
1372 "Edit the group list for CATEGORY."
1373 (interactive (list (gnus-category-name)))
1374 (let ((info (assq category gnus-category-alist)))
1376 (cadddr info) (format "Editing the group list for category %s" category)
1378 (setcar (nthcdr 3 (assq ',category gnus-category-alist)) groups)
1379 (gnus-category-write)
1380 (gnus-category-list)))))
1382 (defun gnus-category-kill (category)
1383 "Kill the current category."
1384 (interactive (list (gnus-category-name)))
1385 (let ((info (assq category gnus-category-alist))
1386 (buffer-read-only nil))
1388 (setq gnus-category-alist (delq info gnus-category-alist))
1389 (gnus-category-write)))
1391 (defun gnus-category-copy (category to)
1392 "Copy the current category."
1393 (interactive (list (gnus-category-name) (intern (read-string "New name: "))))
1394 (let ((info (assq category gnus-category-alist)))
1395 (push (list to (gnus-copy-sequence (cadr info))
1396 (gnus-copy-sequence (caddr info)) nil)
1397 gnus-category-alist)
1398 (gnus-category-write)
1399 (gnus-category-list)))
1401 (defun gnus-category-add (category)
1402 "Create a new category."
1403 (interactive "SCategory name: ")
1404 (when (assq category gnus-category-alist)
1405 (error "Category %s already exists" category))
1406 (push (list category 'false nil nil)
1407 gnus-category-alist)
1408 (gnus-category-write)
1409 (gnus-category-list))
1411 (defun gnus-category-list ()
1412 "List all categories."
1414 (gnus-category-prepare))
1416 (defun gnus-category-exit ()
1417 "Return to the group buffer."
1419 (kill-buffer (current-buffer))
1420 (gnus-configure-windows 'group t))
1422 ;; To avoid having 8-bit characters in the source file.
1423 (defvar gnus-category-not (list '! 'not (intern (format "%c" 172))))
1425 (defvar gnus-category-predicate-alist
1426 '((spam . gnus-agent-spam-p)
1427 (short . gnus-agent-short-p)
1428 (long . gnus-agent-long-p)
1429 (low . gnus-agent-low-scored-p)
1430 (high . gnus-agent-high-scored-p)
1431 (true . gnus-agent-true)
1432 (false . gnus-agent-false))
1433 "Mapping from short score predicate symbols to predicate functions.")
1435 (defun gnus-agent-spam-p ()
1436 "Say whether an article is spam or not."
1437 (unless gnus-agent-spam-hashtb
1438 (setq gnus-agent-spam-hashtb (gnus-make-hashtable 1000)))
1439 (if (not (equal (mail-header-references gnus-headers) ""))
1441 (let ((string (gnus-simplify-subject (mail-header-subject gnus-headers))))
1443 (gnus-gethash string gnus-agent-spam-hashtb)
1444 (gnus-sethash string t gnus-agent-spam-hashtb)))))
1446 (defun gnus-agent-short-p ()
1447 "Say whether an article is short or not."
1448 (< (mail-header-lines gnus-headers) gnus-agent-short-article))
1450 (defun gnus-agent-long-p ()
1451 "Say whether an article is long or not."
1452 (> (mail-header-lines gnus-headers) gnus-agent-long-article))
1454 (defun gnus-agent-low-scored-p ()
1455 "Say whether an article has a low score or not."
1456 (< gnus-score gnus-agent-low-score))
1458 (defun gnus-agent-high-scored-p ()
1459 "Say whether an article has a high score or not."
1460 (> gnus-score gnus-agent-high-score))
1462 (defun gnus-category-make-function (cat)
1463 "Make a function from category CAT."
1464 `(lambda () ,(gnus-category-make-function-1 cat)))
1466 (defun gnus-agent-true ()
1470 (defun gnus-agent-false ()
1474 (defun gnus-category-make-function-1 (cat)
1475 "Make a function from category CAT."
1477 ;; Functions are just returned as is.
1479 (gnus-functionp cat))
1480 `(,(or (cdr (assq cat gnus-category-predicate-alist))
1482 ;; More complex category.
1485 ((memq (car cat) '(& and))
1487 ((memq (car cat) '(| or))
1489 ((memq (car cat) gnus-category-not)
1491 ,@(mapcar 'gnus-category-make-function-1 (cdr cat))))
1493 (error "Unknown category type: %s" cat))))
1495 (defun gnus-get-predicate (predicate)
1496 "Return the predicate for CATEGORY."
1497 (or (cdr (assoc predicate gnus-category-predicate-cache))
1498 (cdar (push (cons predicate
1499 (gnus-category-make-function predicate))
1500 gnus-category-predicate-cache))))
1502 (defun gnus-group-category (group)
1503 "Return the category GROUP belongs to."
1504 (unless gnus-category-group-cache
1505 (setq gnus-category-group-cache (gnus-make-hashtable 1000))
1506 (let ((cs gnus-category-alist)
1508 (while (setq cat (pop cs))
1509 (setq groups (cadddr cat))
1511 (gnus-sethash (pop groups) cat gnus-category-group-cache)))))
1512 (or (gnus-gethash group gnus-category-group-cache)
1513 (assq 'default gnus-category-alist)))
1515 (defun gnus-agent-expire ()
1516 "Expire all old articles."
1518 (let ((methods gnus-agent-covered-methods)
1519 (day (- (time-to-days (current-time)) gnus-agent-expire-days))
1520 gnus-command-method sym group articles
1521 history overview file histories elem art nov-file low info
1522 unreads marked article orig lowest highest)
1524 (setq overview (gnus-get-buffer-create " *expire overview*"))
1525 (while (setq gnus-command-method (pop methods))
1526 (when (file-exists-p (gnus-agent-lib-file "active"))
1528 (insert-file-contents-as-coding-system
1529 gnus-agent-file-coding-system (gnus-agent-lib-file "active"))
1530 (gnus-active-to-gnus-format
1532 (setq orig (gnus-make-hashtable
1533 (count-lines (point-min) (point-max))))))
1534 (let ((expiry-hashtb (gnus-make-hashtable 1023)))
1535 (gnus-agent-open-history)
1537 (setq gnus-agent-current-history
1538 (setq history (gnus-agent-history-buffer))))
1539 (goto-char (point-min))
1540 (when (> (buffer-size) 1)
1541 (goto-char (point-min))
1543 (skip-chars-forward "^\t")
1544 (if (let ((fetch-date (read (current-buffer))))
1545 (if (numberp fetch-date)
1547 ;; History file is corrupted.
1550 (format "File %s is corrupted!"
1551 (gnus-agent-lib-file "history")))
1555 ;; New article; we don't expire it.
1557 ;; Old article. Schedule it for possible nuking.
1559 (setq sym (let ((obarray expiry-hashtb) s)
1560 (setq s (read (current-buffer)))
1561 (if (stringp s) (intern s) s)))
1563 (set sym (cons (cons (read (current-buffer)) (point))
1564 (symbol-value sym)))
1565 (set sym (list (cons (read (current-buffer)) (point)))))
1566 (skip-chars-forward " "))
1568 ;; We now have all articles that can possibly be expired.
1571 (setq group (symbol-name sym)
1572 articles (sort (symbol-value sym) 'car-less-than-car)
1573 low (car (gnus-active group))
1574 info (gnus-get-info group)
1575 unreads (ignore-errors
1576 (gnus-list-of-unread-articles group))
1578 (gnus-uncompress-range
1579 (cdr (assq 'tick (gnus-info-marks info))))
1580 (gnus-uncompress-range
1581 (cdr (assq 'dormant (gnus-info-marks info))))
1582 (gnus-uncompress-range
1583 (cdr (assq 'save (gnus-info-marks info))))
1584 (gnus-uncompress-range
1585 (cdr (assq 'reply (gnus-info-marks info)))))
1586 nov-file (gnus-agent-article-name ".overview" group)
1589 (gnus-agent-load-alist group)
1590 (gnus-message 5 "Expiring articles in %s" group)
1591 (set-buffer overview)
1593 (when (file-exists-p nov-file)
1594 (nnheader-insert-file-contents nov-file))
1595 (goto-char (point-min))
1597 (while (setq elem (pop articles))
1598 (setq article (car elem))
1599 (when (or (null low)
1601 gnus-agent-expire-all
1602 (and (not (memq article unreads))
1603 (not (memq article marked))))
1604 ;; Find and nuke the NOV line.
1605 (while (and (not (eobp))
1607 (setq art (read (current-buffer)))))
1609 (if (and (numberp art)
1611 (gnus-agent-article-name
1612 (number-to-string art) group)))
1618 ;; Remove old NOV lines that have no articles.
1619 (gnus-delete-line)))
1624 ;; Nuke the article.
1625 (when (file-exists-p
1626 (setq file (gnus-agent-article-name
1627 (number-to-string article)
1630 ;; Schedule the history line for nuking.
1631 (push (cdr elem) histories)))
1632 (gnus-make-directory (file-name-directory nov-file))
1633 (write-region-as-coding-system
1634 gnus-agent-file-coding-system
1635 (point-min) (point-max) nov-file nil 'silent)
1636 ;; Delete the unwanted entries in the alist.
1637 (setq gnus-agent-article-alist
1638 (sort gnus-agent-article-alist 'car-less-than-car))
1639 (let* ((alist gnus-agent-article-alist)
1640 (prev (cons nil alist))
1644 (<= (caar alist) article))
1645 (if (or (not (cdar alist))
1647 (gnus-agent-article-name
1652 (push (caar alist) expired)
1653 (setcdr prev (setq alist (cdr alist))))
1655 alist (cdr alist))))
1656 (setq gnus-agent-article-alist (cdr first))
1657 (gnus-agent-save-alist group)
1658 ;; Mark all articles up to the first article
1659 ;; in `gnus-article-alist' as read.
1660 (when (and info (caar gnus-agent-article-alist))
1661 (setcar (nthcdr 2 info)
1664 (cons 1 (- (caar gnus-agent-article-alist) 1)))))
1665 ;; Maybe everything has been expired from `gnus-article-alist'
1666 ;; and so the above marking as read could not be conducted,
1667 ;; or there are expired article within the range of the alist.
1670 (or (not (caar gnus-agent-article-alist))
1672 (caar gnus-agent-article-alist))))
1673 (setcar (nthcdr 2 info)
1676 (nreverse expired))))
1678 (concat "(gnus-group-set-info '"
1679 (gnus-prin1-to-string info)
1682 (if (gnus-gethash group orig)
1683 (setcar (gnus-gethash group orig) lowest)
1684 (gnus-sethash group (cons lowest highest) orig))))
1686 (set-buffer history)
1687 (setq histories (nreverse (sort histories '<)))
1689 (goto-char (pop histories))
1691 (gnus-agent-save-history)
1692 (gnus-agent-close-history)
1693 (gnus-write-active-file (gnus-agent-lib-file "active") orig))
1694 (gnus-message 4 "Expiry...done")))))))
1697 (defun gnus-agent-batch ()
1699 (let ((init-file-user "")
1700 (gnus-always-read-dribble-file t))
1702 (gnus-group-send-drafts)
1703 (gnus-agent-fetch-session))
1705 (provide 'gnus-agent)
1707 ;;; gnus-agent.el ends here