1 ;;; gnus-agent.el --- unplugged support for Gnus
2 ;; Copyright (C) 1997, 1998, 1999, 2000, 2001
3 ;; Free Software Foundation, Inc.
5 ;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
6 ;; This file is part of GNU Emacs.
8 ;; GNU Emacs is free software; you can redistribute it and/or modify
9 ;; it under the terms of the GNU General Public License as published by
10 ;; the Free Software Foundation; either version 2, or (at your option)
13 ;; GNU Emacs is distributed in the hope that it will be useful,
14 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
15 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 ;; GNU General Public License for more details.
18 ;; You should have received a copy of the GNU General Public License
19 ;; along with GNU Emacs; see the file COPYING. If not, write to the
20 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
21 ;; Boston, MA 02111-1307, USA.
33 (if (featurep 'xemacs)
39 (autoload 'gnus-server-update-server "gnus-srvr"))
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 ;; Extracted from gnus-xmas-redefine in order to preserve user settings
78 (when (featurep 'xemacs)
79 (add-hook 'gnus-agent-group-mode-hook 'gnus-xmas-agent-group-menu-add))
81 (defcustom gnus-agent-summary-mode-hook nil
82 "Hook run in Agent summary minor modes."
86 ;; Extracted from gnus-xmas-redefine in order to preserve user settings
87 (when (featurep 'xemacs)
88 (add-hook 'gnus-agent-summary-mode-hook 'gnus-xmas-agent-summary-menu-add))
90 (defcustom gnus-agent-server-mode-hook nil
91 "Hook run in Agent summary minor modes."
95 ;; Extracted from gnus-xmas-redefine in order to preserve user settings
96 (when (featurep 'xemacs)
97 (add-hook 'gnus-agent-server-mode-hook 'gnus-xmas-agent-server-menu-add))
99 (defcustom gnus-agent-confirmation-function 'y-or-n-p
100 "Function to confirm when error happens."
105 (defcustom gnus-agent-synchronize-flags 'ask
106 "Indicate if flags are synchronized when you plug in.
107 If this is `ask' the hook will query the user."
109 :type '(choice (const :tag "Always" t)
110 (const :tag "Never" nil)
111 (const :tag "Ask" ask))
114 ;;; Internal variables
116 (defvar gnus-agent-history-buffers nil)
117 (defvar gnus-agent-buffer-alist nil)
118 (defvar gnus-agent-article-alist nil)
119 (defvar gnus-agent-group-alist nil)
120 (defvar gnus-agent-covered-methods nil)
121 (defvar gnus-category-alist nil)
122 (defvar gnus-agent-current-history nil)
123 (defvar gnus-agent-overview-buffer nil)
124 (defvar gnus-category-predicate-cache nil)
125 (defvar gnus-category-group-cache nil)
126 (defvar gnus-agent-spam-hashtb nil)
127 (defvar gnus-agent-file-name nil)
128 (defvar gnus-agent-send-mail-function nil)
129 (defvar gnus-agent-file-coding-system 'raw-text)
132 (defvar gnus-headers)
139 (defun gnus-open-agent ()
141 (gnus-agent-read-servers)
143 (gnus-agent-create-buffer)
144 (add-hook 'gnus-group-mode-hook 'gnus-agent-mode)
145 (add-hook 'gnus-summary-mode-hook 'gnus-agent-mode)
146 (add-hook 'gnus-server-mode-hook 'gnus-agent-mode))
148 (defun gnus-agent-create-buffer ()
149 (if (gnus-buffer-live-p gnus-agent-overview-buffer)
151 (setq gnus-agent-overview-buffer
152 (gnus-get-buffer-create " *Gnus agent overview*"))
153 (with-current-buffer gnus-agent-overview-buffer
154 (mm-enable-multibyte))
157 (gnus-add-shutdown 'gnus-close-agent 'gnus)
159 (defun gnus-close-agent ()
160 (setq gnus-agent-covered-methods nil
161 gnus-category-predicate-cache nil
162 gnus-category-group-cache nil
163 gnus-agent-spam-hashtb nil)
164 (gnus-kill-buffer gnus-agent-overview-buffer))
167 ;;; Utility functions
170 (defun gnus-agent-read-file (file)
171 "Load FILE and do a `read' there."
174 (nnheader-insert-file-contents file)
175 (goto-char (point-min))
176 (read (current-buffer)))))
178 (defsubst gnus-agent-method ()
179 (concat (symbol-name (car gnus-command-method)) "/"
180 (if (equal (cadr gnus-command-method) "")
182 (cadr gnus-command-method))))
184 (defsubst gnus-agent-directory ()
185 "Path of the Gnus agent directory."
186 (nnheader-concat gnus-agent-directory
187 (nnheader-translate-file-chars (gnus-agent-method)) "/"))
189 (defun gnus-agent-lib-file (file)
190 "The full path of the Gnus agent library FILE."
191 (expand-file-name file
192 (file-name-as-directory
193 (expand-file-name "agent.lib" (gnus-agent-directory)))))
195 ;;; Fetching setup functions.
197 (defun gnus-agent-start-fetch ()
198 "Initialize data structures for efficient fetching."
199 (gnus-agent-open-history)
200 (setq gnus-agent-current-history (gnus-agent-history-buffer))
201 (gnus-agent-create-buffer))
203 (defun gnus-agent-stop-fetch ()
204 "Save all data structures and clean up."
205 (gnus-agent-save-history)
206 (gnus-agent-close-history)
207 (setq gnus-agent-spam-hashtb nil)
209 (set-buffer nntp-server-buffer)
212 (defmacro gnus-agent-with-fetch (&rest forms)
215 (let ((gnus-agent-fetching t))
216 (gnus-agent-start-fetch)
218 (gnus-agent-stop-fetch)))
220 (put 'gnus-agent-with-fetch 'lisp-indent-function 0)
221 (put 'gnus-agent-with-fetch 'edebug-form-spec '(body))
227 (defvar gnus-agent-mode-hook nil
228 "Hook run when installing agent mode.")
230 (defvar gnus-agent-mode nil)
231 (defvar gnus-agent-mode-status '(gnus-agent-mode " Plugged"))
233 (defun gnus-agent-mode ()
234 "Minor mode for providing a agent support in Gnus buffers."
235 (let* ((buffer (progn (string-match "^gnus-\\(.*\\)-mode$"
236 (symbol-name major-mode))
237 (match-string 1 (symbol-name major-mode))))
238 (mode (intern (format "gnus-agent-%s-mode" buffer))))
239 (set (make-local-variable 'gnus-agent-mode) t)
241 (set (make-local-variable mode) t)
243 (when (gnus-visual-p 'agent-menu 'menu)
244 (funcall (intern (format "gnus-agent-%s-make-menu-bar" buffer))))
245 (unless (assq 'gnus-agent-mode minor-mode-alist)
246 (push gnus-agent-mode-status minor-mode-alist))
247 (unless (assq mode minor-mode-map-alist)
248 (push (cons mode (symbol-value (intern (format "gnus-agent-%s-mode-map"
250 minor-mode-map-alist))
251 (when (eq major-mode 'gnus-group-mode)
252 (gnus-agent-toggle-plugged gnus-plugged))
253 (gnus-run-hooks 'gnus-agent-mode-hook
254 (intern (format "gnus-agent-%s-mode-hook" buffer)))))
256 (defvar gnus-agent-group-mode-map (make-sparse-keymap))
257 (gnus-define-keys gnus-agent-group-mode-map
258 "Ju" gnus-agent-fetch-groups
259 "Jc" gnus-enter-category-buffer
260 "Jj" gnus-agent-toggle-plugged
261 "Js" gnus-agent-fetch-session
262 "JY" gnus-agent-synchronize-flags
263 "JS" gnus-group-send-drafts
264 "Ja" gnus-agent-add-group
265 "Jr" gnus-agent-remove-group)
267 (defun gnus-agent-group-make-menu-bar ()
268 (unless (boundp 'gnus-agent-group-menu)
270 gnus-agent-group-menu gnus-agent-group-mode-map ""
272 ["Toggle plugged" gnus-agent-toggle-plugged t]
273 ["List categories" gnus-enter-category-buffer t]
274 ["Send drafts" gnus-group-send-drafts gnus-plugged]
276 ["All" gnus-agent-fetch-session gnus-plugged]
277 ["Group" gnus-agent-fetch-group gnus-plugged])))))
279 (defvar gnus-agent-summary-mode-map (make-sparse-keymap))
280 (gnus-define-keys gnus-agent-summary-mode-map
281 "Jj" gnus-agent-toggle-plugged
282 "J#" gnus-agent-mark-article
283 "J\M-#" gnus-agent-unmark-article
284 "@" gnus-agent-toggle-mark
285 "Jc" gnus-agent-catchup)
287 (defun gnus-agent-summary-make-menu-bar ()
288 (unless (boundp 'gnus-agent-summary-menu)
290 gnus-agent-summary-menu gnus-agent-summary-mode-map ""
292 ["Toggle plugged" gnus-agent-toggle-plugged t]
293 ["Mark as downloadable" gnus-agent-mark-article t]
294 ["Unmark as downloadable" gnus-agent-unmark-article t]
295 ["Toggle mark" gnus-agent-toggle-mark t]
296 ["Catchup undownloaded" gnus-agent-catchup t]))))
298 (defvar gnus-agent-server-mode-map (make-sparse-keymap))
299 (gnus-define-keys gnus-agent-server-mode-map
300 "Jj" gnus-agent-toggle-plugged
301 "Ja" gnus-agent-add-server
302 "Jr" gnus-agent-remove-server)
304 (defun gnus-agent-server-make-menu-bar ()
305 (unless (boundp 'gnus-agent-server-menu)
307 gnus-agent-server-menu gnus-agent-server-mode-map ""
309 ["Toggle plugged" gnus-agent-toggle-plugged t]
310 ["Add" gnus-agent-add-server t]
311 ["Remove" gnus-agent-remove-server t]))))
313 (defun gnus-agent-make-mode-line-string (string mouse2-func)
314 (if (and (fboundp 'propertize)
315 (fboundp 'make-mode-line-mouse2-map))
316 (propertize string 'local-map
317 (make-mode-line-mouse2-map mouse2-func))
320 (defun gnus-agent-toggle-plugged (plugged)
321 "Toggle whether Gnus is unplugged or not."
322 (interactive (list (not gnus-plugged)))
325 (setq gnus-plugged plugged)
326 (gnus-agent-possibly-synchronize-flags)
327 (gnus-run-hooks 'gnus-agent-plugged-hook)
328 (setcar (cdr gnus-agent-mode-status)
329 (gnus-agent-make-mode-line-string " Plugged"
330 'gnus-agent-toggle-plugged)))
331 (gnus-agent-close-connections)
332 (setq gnus-plugged plugged)
333 (gnus-run-hooks 'gnus-agent-unplugged-hook)
334 (setcar (cdr gnus-agent-mode-status)
335 (gnus-agent-make-mode-line-string " Unplugged"
336 'gnus-agent-toggle-plugged)))
337 (set-buffer-modified-p t))
339 (defun gnus-agent-close-connections ()
340 "Close all methods covered by the Gnus agent."
341 (let ((methods gnus-agent-covered-methods))
343 (gnus-close-server (pop methods)))))
346 (defun gnus-unplugged ()
347 "Start Gnus unplugged."
349 (setq gnus-plugged nil)
353 (defun gnus-plugged ()
354 "Start Gnus plugged."
356 (setq gnus-plugged t)
360 (defun gnus-agentize ()
361 "Allow Gnus to be an offline newsreader.
362 The normal usage of this command is to put the following as the
363 last form in your `.gnus.el' file:
367 This will modify the `gnus-setup-news-hook', and
368 `message-send-mail-real-function' variables, and install the Gnus agent
369 minor mode in all Gnus buffers."
372 (add-hook 'gnus-setup-news-hook 'gnus-agent-queue-setup)
373 (unless gnus-agent-send-mail-function
374 (setq gnus-agent-send-mail-function (or
375 message-send-mail-real-function
376 message-send-mail-function)
377 message-send-mail-real-function 'gnus-agent-send-mail))
378 (unless gnus-agent-covered-methods
379 (setq gnus-agent-covered-methods (list gnus-select-method))))
381 (defun gnus-agent-queue-setup ()
382 "Make sure the queue group exists."
383 (unless (gnus-gethash "nndraft:queue" gnus-newsrc-hashtb)
384 (gnus-request-create-group "queue" '(nndraft ""))
385 (let ((gnus-level-default-subscribed 1))
386 (gnus-subscribe-group "nndraft:queue" nil '(nndraft "")))
387 (gnus-group-set-parameter
388 "nndraft:queue" 'gnus-dummy '((gnus-draft-mode)))))
390 (defun gnus-agent-send-mail ()
392 (funcall gnus-agent-send-mail-function)
393 (goto-char (point-min))
395 (concat "^" (regexp-quote mail-header-separator) "\n"))
397 (gnus-agent-insert-meta-information 'mail)
398 (gnus-request-accept-article "nndraft:queue" nil t t)))
400 (defun gnus-agent-insert-meta-information (type &optional method)
401 "Insert meta-information into the message that says how it's to be posted.
402 TYPE can be either `mail' or `news'. If the latter, then METHOD can
405 (message-remove-header gnus-agent-meta-information-header)
406 (goto-char (point-min))
407 (insert gnus-agent-meta-information-header ": "
408 (symbol-name type) " " (format "%S" method)
411 (while (search-backward "\n" nil t)
412 (replace-match "\\n" t t))))
414 (defun gnus-agent-restore-gcc ()
415 "Restore GCC field from saved header."
417 (goto-char (point-min))
418 (while (re-search-forward (concat gnus-agent-gcc-header ":") nil t)
419 (replace-match "Gcc:" 'fixedcase))))
421 (defun gnus-agent-any-covered-gcc ()
423 (message-narrow-to-headers)
424 (let* ((gcc (mail-fetch-field "gcc" nil t))
426 (mapcar 'gnus-inews-group-method
427 (message-unquote-tokens
428 (message-tokenize-header
431 (while (and (not covered) methods)
433 (member (car methods) gnus-agent-covered-methods)
434 methods (cdr methods)))
437 (defun gnus-agent-possibly-save-gcc ()
438 "Save GCC if Gnus is unplugged."
439 (when (and (not gnus-plugged) (gnus-agent-any-covered-gcc))
441 (goto-char (point-min))
442 (let ((case-fold-search t))
443 (while (re-search-forward "^gcc:" nil t)
444 (replace-match (concat gnus-agent-gcc-header ":") 'fixedcase))))))
446 (defun gnus-agent-possibly-do-gcc ()
447 "Do GCC if Gnus is plugged."
448 (when (or gnus-plugged (not (gnus-agent-any-covered-gcc)))
449 (gnus-inews-do-gcc)))
452 ;;; Group mode commands
455 (defun gnus-agent-fetch-groups (n)
456 "Put all new articles in the current groups into the Agent."
459 (error "Groups can't be fetched when Gnus is unplugged"))
460 (gnus-group-iterate n 'gnus-agent-fetch-group))
462 (defun gnus-agent-fetch-group (group)
463 "Put all new articles in GROUP into the Agent."
464 (interactive (list (gnus-group-group-name)))
466 (error "Groups can't be fetched when Gnus is unplugged"))
468 (error "No group on the current line"))
469 (let ((gnus-command-method (gnus-find-method-for-group group)))
470 (gnus-agent-with-fetch
471 (gnus-agent-fetch-group-1 group gnus-command-method)
472 (gnus-message 5 "Fetching %s...done" group))))
474 (defun gnus-agent-add-group (category arg)
475 "Add the current group to an agent category."
481 (mapcar (lambda (cat) (list (symbol-name (car cat))))
485 (let ((cat (assq category gnus-category-alist))
487 (gnus-group-iterate arg
489 (when (cadddr (setq c (gnus-group-category group)))
490 (setf (cadddr c) (delete group (cadddr c))))
491 (push group groups)))
492 (setf (cadddr cat) (nconc (cadddr cat) groups))
493 (gnus-category-write)))
495 (defun gnus-agent-remove-group (arg)
496 "Remove the current group from its agent category, if any."
499 (gnus-group-iterate arg
501 (when (cadddr (setq c (gnus-group-category group)))
502 (setf (cadddr c) (delete group (cadddr c))))))
503 (gnus-category-write)))
505 (defun gnus-agent-synchronize-flags ()
506 "Synchronize unplugged flags with servers."
509 (dolist (gnus-command-method gnus-agent-covered-methods)
510 (when (file-exists-p (gnus-agent-lib-file "flags"))
511 (gnus-agent-synchronize-flags-server gnus-command-method)))))
513 (defun gnus-agent-possibly-synchronize-flags ()
514 "Synchronize flags according to `gnus-agent-synchronize-flags'."
517 (dolist (gnus-command-method gnus-agent-covered-methods)
518 (when (file-exists-p (gnus-agent-lib-file "flags"))
519 (gnus-agent-possibly-synchronize-flags-server gnus-command-method)))))
521 (defun gnus-agent-synchronize-flags-server (method)
522 "Synchronize flags set when unplugged for server."
523 (let ((gnus-command-method method))
524 (when (file-exists-p (gnus-agent-lib-file "flags"))
525 (set-buffer (get-buffer-create " *Gnus Agent flag synchronize*"))
527 (nnheader-insert-file-contents (gnus-agent-lib-file "flags"))
528 (if (null (gnus-check-server gnus-command-method))
529 (message "Couldn't open server %s" (nth 1 gnus-command-method))
531 (if (null (eval (read (current-buffer))))
532 (progn (forward-line)
534 (write-file (gnus-agent-lib-file "flags"))
535 (error "Couldn't set flags from file %s"
536 (gnus-agent-lib-file "flags"))))
537 (delete-file (gnus-agent-lib-file "flags")))
540 (defun gnus-agent-possibly-synchronize-flags-server (method)
541 "Synchronize flags for server according to `gnus-agent-synchronize-flags'."
542 (when (or (and gnus-agent-synchronize-flags
543 (not (eq gnus-agent-synchronize-flags 'ask)))
544 (and (eq gnus-agent-synchronize-flags 'ask)
545 (gnus-y-or-n-p (format "Synchronize flags on server `%s'? "
547 (gnus-agent-synchronize-flags-server method)))
550 ;;; Server mode commands
553 (defun gnus-agent-add-server (server)
554 "Enroll SERVER in the agent program."
555 (interactive (list (gnus-server-server-name)))
557 (error "No server on the current line"))
558 (let ((method (gnus-server-get-method nil (gnus-server-server-name))))
559 (when (member method gnus-agent-covered-methods)
560 (error "Server already in the agent program"))
561 (push method gnus-agent-covered-methods)
562 (gnus-server-update-server server)
563 (gnus-agent-write-servers)
564 (message "Entered %s into the Agent" server)))
566 (defun gnus-agent-remove-server (server)
567 "Remove SERVER from the agent program."
568 (interactive (list (gnus-server-server-name)))
570 (error "No server on the current line"))
571 (let ((method (gnus-server-get-method nil (gnus-server-server-name))))
572 (unless (member method gnus-agent-covered-methods)
573 (error "Server not in the agent program"))
574 (setq gnus-agent-covered-methods
575 (delete method gnus-agent-covered-methods))
576 (gnus-server-update-server server)
577 (gnus-agent-write-servers)
578 (message "Removed %s from the agent" server)))
580 (defun gnus-agent-read-servers ()
581 "Read the alist of covered servers."
582 (setq gnus-agent-covered-methods
583 (gnus-agent-read-file
584 (nnheader-concat gnus-agent-directory "lib/servers"))))
586 (defun gnus-agent-write-servers ()
587 "Write the alist of covered servers."
588 (gnus-make-directory (nnheader-concat gnus-agent-directory "lib"))
589 (let ((coding-system-for-write nnheader-file-coding-system)
590 (file-name-coding-system nnmail-pathname-coding-system))
591 (with-temp-file (nnheader-concat gnus-agent-directory "lib/servers")
592 (prin1 gnus-agent-covered-methods (current-buffer)))))
598 (defun gnus-agent-mark-article (n &optional unmark)
599 "Mark the next N articles as downloadable.
600 If N is negative, mark backward instead. If UNMARK is non-nil, remove
601 the mark instead. The difference between N and the actual number of
602 articles marked is returned."
604 (let ((backward (< n 0))
609 (gnus-summary-set-agent-mark
610 (gnus-summary-article-number) unmark)
611 (zerop (gnus-summary-next-subject (if backward -1 1) nil t))))
614 (gnus-message 7 "No more articles"))
615 (gnus-summary-recenter)
616 (gnus-summary-position-point)
619 (defun gnus-agent-unmark-article (n)
620 "Remove the downloadable mark from the next N articles.
621 If N is negative, unmark backward instead. The difference between N and
622 the actual number of articles unmarked is returned."
624 (gnus-agent-mark-article n t))
626 (defun gnus-agent-toggle-mark (n)
627 "Toggle the downloadable mark from the next N articles.
628 If N is negative, toggle backward instead. The difference between N and
629 the actual number of articles toggled is returned."
631 (gnus-agent-mark-article n 'toggle))
633 (defun gnus-summary-set-agent-mark (article &optional unmark)
634 "Mark ARTICLE as downloadable."
635 (let ((unmark (if (and (not (null unmark)) (not (eq t unmark)))
636 (memq article gnus-newsgroup-downloadable)
640 (setq gnus-newsgroup-downloadable
641 (delq article gnus-newsgroup-downloadable))
642 (push article gnus-newsgroup-undownloaded))
643 (setq gnus-newsgroup-undownloaded
644 (delq article gnus-newsgroup-undownloaded))
645 (push article gnus-newsgroup-downloadable))
646 (gnus-summary-update-mark
647 (if unmark gnus-undownloaded-mark gnus-downloadable-mark)
650 (defun gnus-agent-get-undownloaded-list ()
651 "Mark all unfetched articles as read."
652 (let ((gnus-command-method (gnus-find-method-for-group gnus-newsgroup-name)))
653 (when (and (not gnus-plugged)
654 (gnus-agent-method-p gnus-command-method))
655 (gnus-agent-load-alist gnus-newsgroup-name)
656 ;; First mark all undownloaded articles as undownloaded.
657 (dolist (article (mapcar (lambda (header) (mail-header-number header))
658 gnus-newsgroup-headers))
659 (unless (or (cdr (assq article gnus-agent-article-alist))
660 (memq article gnus-newsgroup-downloadable)
661 (memq article gnus-newsgroup-cached))
662 (push article gnus-newsgroup-undownloaded)))
663 ;; Then mark downloaded downloadable as not-downloadable,
664 ;; if you get my drift.
665 (dolist (article gnus-newsgroup-downloadable)
666 (when (cdr (assq article gnus-agent-article-alist))
667 (setq gnus-newsgroup-downloadable
668 (delq article gnus-newsgroup-downloadable)))))))
670 (defun gnus-agent-catchup ()
671 "Mark all undownloaded articles as read."
674 (while gnus-newsgroup-undownloaded
675 (gnus-summary-mark-article
676 (pop gnus-newsgroup-undownloaded) gnus-catchup-mark)))
677 (gnus-summary-position-point))
680 ;;; Internal functions
683 (defun gnus-agent-save-active (method)
684 (gnus-agent-save-active-1 method 'gnus-active-to-gnus-format))
686 (defun gnus-agent-save-active-1 (method function)
687 (when (gnus-agent-method-p method)
688 (let* ((gnus-command-method method)
689 (new (gnus-make-hashtable (count-lines (point-min) (point-max))))
690 (file (gnus-agent-lib-file "active")))
691 (funcall function nil new)
692 (gnus-agent-write-active file new)
694 (nnheader-insert-file-contents file))))
696 (defun gnus-agent-write-active (file new)
697 (let ((orig (gnus-make-hashtable (count-lines (point-min) (point-max))))
698 (file (gnus-agent-lib-file "active"))
700 (when (file-exists-p file)
702 (nnheader-insert-file-contents file)
703 (gnus-active-to-gnus-format nil orig))
706 (when (and sym (boundp sym))
707 (if (and (boundp (setq osym (intern (symbol-name sym) orig)))
708 (setq elem (symbol-value osym)))
709 (setcdr elem (cdr (symbol-value sym)))
710 (set (intern (symbol-name sym) orig) (symbol-value sym)))))
712 (gnus-make-directory (file-name-directory file))
713 (let ((coding-system-for-write gnus-agent-file-coding-system))
714 ;; The hashtable contains real names of groups, no more prefix
715 ;; removing, so set `full' to `t'.
716 (gnus-write-active-file file orig t))))
718 (defun gnus-agent-save-groups (method)
719 (gnus-agent-save-active-1 method 'gnus-groups-to-gnus-format))
721 (defun gnus-agent-save-group-info (method group active)
722 (when (gnus-agent-method-p method)
723 (let* ((gnus-command-method method)
724 (coding-system-for-write nnheader-file-coding-system)
725 (file-name-coding-system nnmail-pathname-coding-system)
726 (file (gnus-agent-lib-file "active"))
728 (gnus-make-directory (file-name-directory file))
730 ;; Emacs got problem to match non-ASCII group in multibyte buffer.
731 (mm-disable-multibyte)
732 (when (file-exists-p file)
733 (nnheader-insert-file-contents file))
734 (goto-char (point-min))
735 (when (re-search-forward
736 (concat "^" (regexp-quote group) " ") nil t)
738 (read (current-buffer)) ;; max
739 (setq oactive-min (read (current-buffer)))) ;; min
741 (insert (format "%S %d %d y\n" (intern group)
743 (or oactive-min (car active))))
744 (goto-char (point-max))
745 (while (search-backward "\\." nil t)
748 (defun gnus-agent-group-path (group)
749 "Translate GROUP into a path."
750 (if nnmail-use-long-file-names
751 (gnus-group-real-name group)
752 (nnheader-translate-file-chars
753 (nnheader-replace-chars-in-string
754 (nnheader-replace-duplicate-chars-in-string
755 (nnheader-replace-chars-in-string
756 (gnus-group-real-name group)
763 (defun gnus-agent-method-p (method)
764 "Say whether METHOD is covered by the agent."
765 (member method gnus-agent-covered-methods))
767 (defun gnus-agent-get-function (method)
768 (if (and (not gnus-plugged)
769 (gnus-agent-method-p method))
775 ;;; History functions
777 (defun gnus-agent-history-buffer ()
778 (cdr (assoc (gnus-agent-method) gnus-agent-history-buffers)))
780 (defun gnus-agent-open-history ()
782 (push (cons (gnus-agent-method)
783 (set-buffer (gnus-get-buffer-create
784 (format " *Gnus agent %s history*"
785 (gnus-agent-method)))))
786 gnus-agent-history-buffers)
787 (mm-disable-multibyte) ;; everything is binary
790 (let ((file (gnus-agent-lib-file "history")))
791 (when (file-exists-p file)
792 (nnheader-insert-file-contents file))
793 (set (make-local-variable 'gnus-agent-file-name) file))))
795 (defun gnus-agent-save-history ()
797 (set-buffer gnus-agent-current-history)
798 (gnus-make-directory (file-name-directory gnus-agent-file-name))
799 (let ((coding-system-for-write gnus-agent-file-coding-system))
800 (write-region (1+ (point-min)) (point-max)
801 gnus-agent-file-name nil 'silent))))
803 (defun gnus-agent-close-history ()
804 (when (gnus-buffer-live-p gnus-agent-current-history)
805 (kill-buffer gnus-agent-current-history)
806 (setq gnus-agent-history-buffers
807 (delq (assoc (gnus-agent-method) gnus-agent-history-buffers)
808 gnus-agent-history-buffers))))
810 (defun gnus-agent-enter-history (id group-arts date)
812 (set-buffer gnus-agent-current-history)
813 (goto-char (point-max))
815 (insert id "\t" (number-to-string date) "\t")
817 (insert (format "%S" (intern (caar group-arts)))
818 " " (number-to-string (cdr (pop group-arts)))
821 (while (search-backward "\\." p t)
824 (defun gnus-agent-article-in-history-p (id)
826 (set-buffer (gnus-agent-history-buffer))
827 (goto-char (point-min))
828 (search-forward (concat "\n" id "\t") nil t)))
830 (defun gnus-agent-history-path (id)
832 (set-buffer (gnus-agent-history-buffer))
833 (goto-char (point-min))
834 (when (search-forward (concat "\n" id "\t") nil t)
835 (let ((method (gnus-agent-method)))
837 (while (not (numberp (setq group (read (current-buffer)))))
838 (push (concat method "/" group) paths))
839 (nreverse paths))))))
845 (defun gnus-agent-fetch-articles (group articles)
846 "Fetch ARTICLES from GROUP and put them into the Agent."
848 ;; Prune off articles that we have already fetched.
850 (cdr (assq (car articles) gnus-agent-article-alist)))
852 (let ((arts articles))
854 (if (cdr (assq (cadr arts) gnus-agent-article-alist))
855 (setcdr arts (cddr arts))
856 (setq arts (cdr arts)))))
859 (gnus-agent-directory)
860 (gnus-agent-group-path group) "/"))
861 (date (time-to-days (current-time)))
864 (gnus-make-directory dir)
865 (gnus-message 7 "Fetching articles for %s..." group)
866 ;; Fetch the articles from the backend.
867 (if (gnus-check-backend-function 'retrieve-articles group)
868 (setq pos (gnus-retrieve-articles articles group))
871 (while (setq article (pop articles))
873 (gnus-backlog-request-article group article
875 (gnus-request-article article group))
876 (goto-char (point-max))
877 (push (cons article (point)) pos)
878 (insert-buffer-substring nntp-server-buffer)))
879 (copy-to-buffer nntp-server-buffer (point-min) (point-max))
880 (setq pos (nreverse pos)))))
881 ;; Then save these articles into the Agent.
883 (set-buffer nntp-server-buffer)
885 (narrow-to-region (cdar pos) (or (cdadr pos) (point-max)))
886 (goto-char (point-min))
887 (when (search-forward "\n\n" nil t)
888 (when (search-backward "\nXrefs: " nil t)
889 ;; Handle crossposting.
890 (skip-chars-forward "^ ")
891 (skip-chars-forward " ")
893 (while (looking-at "\\([^: \n]+\\):\\([0-9]+\\) +")
894 (push (cons (buffer-substring (match-beginning 1)
896 (buffer-substring (match-beginning 2)
899 (goto-char (match-end 0)))
900 (gnus-agent-crosspost crosses (caar pos))))
901 (goto-char (point-min))
902 (if (not (re-search-forward "^Message-ID: *<\\([^>\n]+\\)>" nil t))
903 (setq id "No-Message-ID-in-article")
904 (setq id (buffer-substring (match-beginning 1) (match-end 1))))
905 (let ((coding-system-for-write
906 gnus-agent-file-coding-system))
907 (write-region (point-min) (point-max)
908 (concat dir (number-to-string (caar pos)))
910 (when (setq elem (assq (caar pos) gnus-agent-article-alist))
912 (gnus-agent-enter-history
913 id (or crosses (list (cons group (caar pos)))) date)
916 (gnus-agent-save-alist group)))))
918 (defun gnus-agent-crosspost (crosses article)
919 (let (gnus-agent-article-alist group alist beg end)
921 (set-buffer gnus-agent-overview-buffer)
922 (when (nnheader-find-nov-line article)
925 (setq end (progn (forward-line 1) (point)))))
927 (setq group (caar crosses))
928 (unless (setq alist (assoc group gnus-agent-group-alist))
929 (push (setq alist (list group (gnus-agent-load-alist (caar crosses))))
930 gnus-agent-group-alist))
931 (setcdr alist (cons (cons (cdar crosses) t) (cdr alist)))
933 (set-buffer (gnus-get-buffer-create (format " *Gnus agent overview %s*"
935 (when (= (point-max) (point-min))
936 (push (cons group (current-buffer)) gnus-agent-buffer-alist)
938 (nnheader-insert-file-contents
939 (gnus-agent-article-name ".overview" group))))
940 (nnheader-find-nov-line (string-to-number (cdar crosses)))
941 (insert (string-to-number (cdar crosses)))
942 (insert-buffer-substring gnus-agent-overview-buffer beg end))
945 (defun gnus-agent-flush-cache ()
947 (while gnus-agent-buffer-alist
948 (set-buffer (cdar gnus-agent-buffer-alist))
949 (let ((coding-system-for-write
950 gnus-agent-file-coding-system))
951 (write-region (point-min) (point-max)
952 (gnus-agent-article-name ".overview"
953 (caar gnus-agent-buffer-alist))
955 (pop gnus-agent-buffer-alist))
956 (while gnus-agent-group-alist
957 (with-temp-file (caar gnus-agent-group-alist)
958 (princ (cdar gnus-agent-group-alist))
960 (pop gnus-agent-group-alist))))
962 (defun gnus-agent-fetch-headers (group &optional force)
963 (let ((articles (gnus-list-of-unread-articles group))
964 (gnus-decode-encoded-word-function 'identity)
965 (file (gnus-agent-article-name ".overview" group)))
966 ;; Add article with marks to list of article headers we want to fetch.
967 (dolist (arts (gnus-info-marks (gnus-get-info group)))
968 (setq articles (gnus-union (gnus-uncompress-sequence (cdr arts))
970 (setq articles (sort articles '<))
971 ;; Remove known articles.
972 (when (gnus-agent-load-alist group)
973 (setq articles (gnus-sorted-intersection
975 (gnus-uncompress-range
976 (cons (1+ (caar (last gnus-agent-article-alist)))
977 (cdr (gnus-active group)))))))
979 (gnus-make-directory (nnheader-translate-file-chars
980 (file-name-directory file) t))
982 (gnus-message 7 "Fetching headers for %s..." group)
984 (set-buffer nntp-server-buffer)
985 (unless (eq 'nov (gnus-retrieve-headers articles group))
986 (nnvirtual-convert-headers))
987 ;; Save these headers for later processing.
988 (copy-to-buffer gnus-agent-overview-buffer (point-min) (point-max))
989 (when (file-exists-p file)
990 (gnus-agent-braid-nov group articles file))
991 (let ((coding-system-for-write
992 gnus-agent-file-coding-system))
993 (write-region (point-min) (point-max) file nil 'silent))
994 (gnus-agent-save-alist group articles nil)
995 (gnus-agent-enter-history
996 "last-header-fetched-for-session"
997 (list (cons group (nth (- (length articles) 1) articles)))
998 (time-to-days (current-time)))
1001 (defsubst gnus-agent-copy-nov-line (article)
1003 (set-buffer gnus-agent-overview-buffer)
1005 (if (eq article (read (current-buffer)))
1006 (setq e (progn (forward-line 1) (point)))
1010 (set-buffer nntp-server-buffer)
1011 (insert-buffer-substring gnus-agent-overview-buffer b e)))
1013 (defun gnus-agent-braid-nov (group articles file)
1014 (set-buffer gnus-agent-overview-buffer)
1015 (goto-char (point-min))
1016 (set-buffer nntp-server-buffer)
1018 (nnheader-insert-file-contents file)
1019 (goto-char (point-max))
1020 (if (or (= (point-min) (point-max))
1023 (< (read (current-buffer)) (car articles))))
1024 ;; We have only headers that are after the older headers,
1025 ;; so we just append them.
1027 (goto-char (point-max))
1028 (insert-buffer-substring gnus-agent-overview-buffer))
1029 ;; We do it the hard way.
1030 (nnheader-find-nov-line (car articles))
1031 (gnus-agent-copy-nov-line (car articles))
1033 (while (and articles
1035 (while (and (not (eobp))
1036 (< (read (current-buffer)) (car articles)))
1040 (gnus-agent-copy-nov-line (car articles))
1041 (setq articles (cdr articles))))
1044 (set-buffer gnus-agent-overview-buffer)
1047 (set-buffer nntp-server-buffer)
1048 (insert-buffer-substring gnus-agent-overview-buffer b e)))))
1050 (defun gnus-agent-load-alist (group &optional dir)
1051 "Load the article-state alist for GROUP."
1052 (setq gnus-agent-article-alist
1053 (gnus-agent-read-file
1055 (expand-file-name ".agentview" dir)
1056 (gnus-agent-article-name ".agentview" group)))))
1058 (defun gnus-agent-save-alist (group &optional articles state dir)
1059 "Save the article-state alist for GROUP."
1060 (let ((file-name-coding-system nnmail-pathname-coding-system)
1061 print-level print-length)
1062 (with-temp-file (if dir
1063 (expand-file-name ".agentview" dir)
1064 (gnus-agent-article-name ".agentview" group))
1065 (princ (setq gnus-agent-article-alist
1066 (nconc gnus-agent-article-alist
1067 (mapcar (lambda (article) (cons article state))
1072 (defun gnus-agent-article-name (article group)
1073 (expand-file-name (if (stringp article) article (string-to-number article))
1074 (file-name-as-directory
1075 (expand-file-name (gnus-agent-group-path group)
1076 (gnus-agent-directory)))))
1078 (defun gnus-agent-batch-confirmation (msg)
1079 "Show error message and return t."
1080 (gnus-message 1 msg)
1084 (defun gnus-agent-batch-fetch ()
1085 "Start Gnus and fetch session."
1088 (let ((gnus-agent-confirmation-function 'gnus-agent-batch-confirmation))
1089 (gnus-agent-fetch-session))
1092 (defun gnus-agent-fetch-session ()
1093 "Fetch all articles and headers that are eligible for fetching."
1095 (unless gnus-agent-covered-methods
1096 (error "No servers are covered by the Gnus agent"))
1097 (unless gnus-plugged
1098 (error "Can't fetch articles while Gnus is unplugged"))
1099 (let ((methods gnus-agent-covered-methods)
1100 groups group gnus-command-method)
1105 (setq gnus-command-method (car methods))
1106 (when (or (gnus-server-opened gnus-command-method)
1107 (gnus-open-server gnus-command-method))
1108 (setq groups (gnus-groups-from-server (car methods)))
1109 (gnus-agent-with-fetch
1110 (while (setq group (pop groups))
1111 (when (<= (gnus-group-level group) gnus-agent-handle-level)
1112 (gnus-agent-fetch-group-1 group gnus-command-method))))))
1114 (unless (funcall gnus-agent-confirmation-function
1115 (format "Error (%s). Continue? " err))
1116 (error "Cannot fetch articles into the Gnus agent")))
1118 (unless (funcall gnus-agent-confirmation-function
1119 (format "Quit fetching session (%s). Continue? "
1121 (signal 'quit "Cannot fetch articles into the Gnus agent"))))
1123 (gnus-message 6 "Finished fetching articles into the Gnus agent"))))
1125 (defun gnus-agent-fetch-group-1 (group method)
1127 (let ((gnus-command-method method)
1128 (gnus-newsgroup-name group)
1129 gnus-newsgroup-dependencies gnus-newsgroup-headers
1130 gnus-newsgroup-scored gnus-headers gnus-score
1131 gnus-use-cache articles arts
1132 category predicate info marks score-param
1133 (gnus-summary-expunge-below gnus-summary-expunge-below)
1134 (gnus-summary-mark-below gnus-summary-mark-below)
1135 (gnus-orphan-score gnus-orphan-score)
1136 ;; Maybe some other gnus-summary local variables should also
1139 (unless (gnus-check-group group)
1140 (error "Can't open server for %s" group))
1142 (when (and (or (gnus-active group) (gnus-activate-group group))
1143 (setq articles (gnus-agent-fetch-headers group))
1144 (let ((nntp-server-buffer gnus-agent-overview-buffer))
1145 ;; Parse them and see which articles we want to fetch.
1146 (setq gnus-newsgroup-dependencies
1147 (make-vector (length articles) 0))
1148 (setq gnus-newsgroup-headers
1149 (gnus-get-newsgroup-headers-xover articles nil nil
1151 ;; `gnus-agent-overview-buffer' may be killed for
1152 ;; timeout reason. If so, recreate it.
1153 (gnus-agent-create-buffer)))
1154 (setq category (gnus-group-category group))
1157 (or (gnus-group-find-parameter group 'agent-predicate t)
1159 (if (memq predicate '(gnus-agent-true gnus-agent-false))
1160 ;; Simple implementation
1162 (and (eq predicate 'gnus-agent-true) articles))
1165 (or (gnus-group-get-parameter group 'agent-score t)
1167 ;; Translate score-param into real one
1170 ((eq score-param 'file)
1171 (setq score-param (gnus-all-score-files group)))
1172 ((stringp (car score-param)))
1174 (setq score-param (list (list score-param)))))
1176 (gnus-score-headers score-param))
1177 (while (setq gnus-headers (pop gnus-newsgroup-headers))
1179 (or (cdr (assq (mail-header-number gnus-headers)
1180 gnus-newsgroup-scored))
1181 gnus-summary-default-score))
1182 (when (funcall predicate)
1183 (push (mail-header-number gnus-headers)
1185 ;; Fetch the articles.
1187 (gnus-agent-fetch-articles group arts)))
1188 ;; Perhaps we have some additional articles to fetch.
1189 (setq arts (assq 'download (gnus-info-marks
1190 (setq info (gnus-get-info group)))))
1192 (gnus-agent-fetch-articles
1193 group (gnus-uncompress-range (cdr arts)))
1194 (setq marks (delq arts (gnus-info-marks info)))
1195 (gnus-info-set-marks info marks)
1197 (concat "(gnus-group-set-info '"
1198 (gnus-prin1-to-string info)
1202 ;;; Agent Category Mode
1205 (defvar gnus-category-mode-hook nil
1206 "Hook run in `gnus-category-mode' buffers.")
1208 (defvar gnus-category-line-format " %(%20c%): %g\n"
1209 "Format of category lines.")
1211 (defvar gnus-category-mode-line-format "Gnus: %%b"
1212 "The format specification for the category mode line.")
1214 (defvar gnus-agent-short-article 100
1215 "Articles that have fewer lines than this are short.")
1217 (defvar gnus-agent-long-article 200
1218 "Articles that have more lines than this are long.")
1220 (defvar gnus-agent-low-score 0
1221 "Articles that have a score lower than this have a low score.")
1223 (defvar gnus-agent-high-score 0
1224 "Articles that have a score higher than this have a high score.")
1227 ;;; Internal variables.
1229 (defvar gnus-category-buffer "*Agent Category*")
1231 (defvar gnus-category-line-format-alist
1232 `((?c gnus-tmp-name ?s)
1233 (?g gnus-tmp-groups ?d)))
1235 (defvar gnus-category-mode-line-format-alist
1236 `((?u user-defined ?s)))
1238 (defvar gnus-category-line-format-spec nil)
1239 (defvar gnus-category-mode-line-format-spec nil)
1241 (defvar gnus-category-mode-map nil)
1242 (put 'gnus-category-mode 'mode-class 'special)
1244 (unless gnus-category-mode-map
1245 (setq gnus-category-mode-map (make-sparse-keymap))
1246 (suppress-keymap gnus-category-mode-map)
1248 (gnus-define-keys gnus-category-mode-map
1249 "q" gnus-category-exit
1250 "k" gnus-category-kill
1251 "c" gnus-category-copy
1252 "a" gnus-category-add
1253 "p" gnus-category-edit-predicate
1254 "g" gnus-category-edit-groups
1255 "s" gnus-category-edit-score
1256 "l" gnus-category-list
1258 "\C-c\C-i" gnus-info-find-node
1259 "\C-c\C-b" gnus-bug))
1261 (defvar gnus-category-menu-hook nil
1262 "*Hook run after the creation of the menu.")
1264 (defun gnus-category-make-menu-bar ()
1265 (gnus-turn-off-edit-menu 'category)
1266 (unless (boundp 'gnus-category-menu)
1268 gnus-category-menu gnus-category-mode-map ""
1270 ["Add" gnus-category-add t]
1271 ["Kill" gnus-category-kill t]
1272 ["Copy" gnus-category-copy t]
1273 ["Edit predicate" gnus-category-edit-predicate t]
1274 ["Edit score" gnus-category-edit-score t]
1275 ["Edit groups" gnus-category-edit-groups t]
1276 ["Exit" gnus-category-exit t]))
1278 (gnus-run-hooks 'gnus-category-menu-hook)))
1280 (defun gnus-category-mode ()
1281 "Major mode for listing and editing agent categories.
1283 All normal editing commands are switched off.
1284 \\<gnus-category-mode-map>
1285 For more in-depth information on this mode, read the manual
1286 (`\\[gnus-info-find-node]').
1288 The following commands are available:
1290 \\{gnus-category-mode-map}"
1292 (when (gnus-visual-p 'category-menu 'menu)
1293 (gnus-category-make-menu-bar))
1294 (kill-all-local-variables)
1295 (gnus-simplify-mode-line)
1296 (setq major-mode 'gnus-category-mode)
1297 (setq mode-name "Category")
1298 (gnus-set-default-directory)
1299 (setq mode-line-process nil)
1300 (use-local-map gnus-category-mode-map)
1301 (buffer-disable-undo)
1302 (setq truncate-lines t)
1303 (setq buffer-read-only t)
1304 (gnus-run-hooks 'gnus-category-mode-hook))
1306 (defalias 'gnus-category-position-point 'gnus-goto-colon)
1308 (defun gnus-category-insert-line (category)
1309 (let* ((gnus-tmp-name (car category))
1310 (gnus-tmp-groups (length (cadddr category))))
1312 (gnus-add-text-properties
1316 (eval gnus-category-line-format-spec))
1317 (list 'gnus-category gnus-tmp-name))))
1319 (defun gnus-enter-category-buffer ()
1320 "Go to the Category buffer."
1322 (gnus-category-setup-buffer)
1323 (gnus-configure-windows 'category)
1324 (gnus-category-prepare))
1326 (defun gnus-category-setup-buffer ()
1327 (unless (get-buffer gnus-category-buffer)
1329 (set-buffer (gnus-get-buffer-create gnus-category-buffer))
1330 (gnus-category-mode))))
1332 (defun gnus-category-prepare ()
1333 (gnus-set-format 'category-mode)
1334 (gnus-set-format 'category t)
1335 (let ((alist gnus-category-alist)
1336 (buffer-read-only nil))
1339 (gnus-category-insert-line (pop alist)))
1340 (goto-char (point-min))
1341 (gnus-category-position-point)))
1343 (defun gnus-category-name ()
1344 (or (get-text-property (gnus-point-at-bol) 'gnus-category)
1345 (error "No category on the current line")))
1347 (defun gnus-category-read ()
1348 "Read the category alist."
1349 (setq gnus-category-alist
1350 (or (gnus-agent-read-file
1351 (nnheader-concat gnus-agent-directory "lib/categories"))
1352 (list (list 'default 'short nil nil)))))
1354 (defun gnus-category-write ()
1355 "Write the category alist."
1356 (setq gnus-category-predicate-cache nil
1357 gnus-category-group-cache nil)
1358 (gnus-make-directory (nnheader-concat gnus-agent-directory "lib"))
1359 (with-temp-file (nnheader-concat gnus-agent-directory "lib/categories")
1360 (prin1 gnus-category-alist (current-buffer))))
1362 (defun gnus-category-edit-predicate (category)
1363 "Edit the predicate for CATEGORY."
1364 (interactive (list (gnus-category-name)))
1365 (let ((info (assq category gnus-category-alist)))
1367 (cadr info) (format "Editing the predicate for category %s" category)
1368 `(lambda (predicate)
1369 (setcar (cdr (assq ',category gnus-category-alist)) predicate)
1370 (gnus-category-write)
1371 (gnus-category-list)))))
1373 (defun gnus-category-edit-score (category)
1374 "Edit the score expression for CATEGORY."
1375 (interactive (list (gnus-category-name)))
1376 (let ((info (assq category gnus-category-alist)))
1379 (format "Editing the score expression for category %s" category)
1381 (setcar (cddr (assq ',category gnus-category-alist)) groups)
1382 (gnus-category-write)
1383 (gnus-category-list)))))
1385 (defun gnus-category-edit-groups (category)
1386 "Edit the group list for CATEGORY."
1387 (interactive (list (gnus-category-name)))
1388 (let ((info (assq category gnus-category-alist)))
1390 (cadddr info) (format "Editing the group list for category %s" category)
1392 (setcar (nthcdr 3 (assq ',category gnus-category-alist)) groups)
1393 (gnus-category-write)
1394 (gnus-category-list)))))
1396 (defun gnus-category-kill (category)
1397 "Kill the current category."
1398 (interactive (list (gnus-category-name)))
1399 (let ((info (assq category gnus-category-alist))
1400 (buffer-read-only nil))
1402 (setq gnus-category-alist (delq info gnus-category-alist))
1403 (gnus-category-write)))
1405 (defun gnus-category-copy (category to)
1406 "Copy the current category."
1407 (interactive (list (gnus-category-name) (intern (read-string "New name: "))))
1408 (let ((info (assq category gnus-category-alist)))
1409 (push (list to (gnus-copy-sequence (cadr info))
1410 (gnus-copy-sequence (caddr info)) nil)
1411 gnus-category-alist)
1412 (gnus-category-write)
1413 (gnus-category-list)))
1415 (defun gnus-category-add (category)
1416 "Create a new category."
1417 (interactive "SCategory name: ")
1418 (when (assq category gnus-category-alist)
1419 (error "Category %s already exists" category))
1420 (push (list category 'false nil nil)
1421 gnus-category-alist)
1422 (gnus-category-write)
1423 (gnus-category-list))
1425 (defun gnus-category-list ()
1426 "List all categories."
1428 (gnus-category-prepare))
1430 (defun gnus-category-exit ()
1431 "Return to the group buffer."
1433 (kill-buffer (current-buffer))
1434 (gnus-configure-windows 'group t))
1436 ;; To avoid having 8-bit characters in the source file.
1437 (defvar gnus-category-not (list '! 'not (intern (format "%c" 172))))
1439 (defvar gnus-category-predicate-alist
1440 '((spam . gnus-agent-spam-p)
1441 (short . gnus-agent-short-p)
1442 (long . gnus-agent-long-p)
1443 (low . gnus-agent-low-scored-p)
1444 (high . gnus-agent-high-scored-p)
1445 (true . gnus-agent-true)
1446 (false . gnus-agent-false))
1447 "Mapping from short score predicate symbols to predicate functions.")
1449 (defun gnus-agent-spam-p ()
1450 "Say whether an article is spam or not."
1451 (unless gnus-agent-spam-hashtb
1452 (setq gnus-agent-spam-hashtb (gnus-make-hashtable 1000)))
1453 (if (not (equal (mail-header-references gnus-headers) ""))
1455 (let ((string (gnus-simplify-subject (mail-header-subject gnus-headers))))
1457 (gnus-gethash string gnus-agent-spam-hashtb)
1458 (gnus-sethash string t gnus-agent-spam-hashtb)))))
1460 (defun gnus-agent-short-p ()
1461 "Say whether an article is short or not."
1462 (< (mail-header-lines gnus-headers) gnus-agent-short-article))
1464 (defun gnus-agent-long-p ()
1465 "Say whether an article is long or not."
1466 (> (mail-header-lines gnus-headers) gnus-agent-long-article))
1468 (defun gnus-agent-low-scored-p ()
1469 "Say whether an article has a low score or not."
1470 (< gnus-score gnus-agent-low-score))
1472 (defun gnus-agent-high-scored-p ()
1473 "Say whether an article has a high score or not."
1474 (> gnus-score gnus-agent-high-score))
1476 (defun gnus-category-make-function (cat)
1477 "Make a function from category CAT."
1478 (let ((func (gnus-category-make-function-1 cat)))
1479 (if (and (= (length func) 1)
1480 (symbolp (car func)))
1482 (gnus-byte-compile `(lambda () ,func)))))
1484 (defun gnus-agent-true ()
1488 (defun gnus-agent-false ()
1492 (defun gnus-category-make-function-1 (cat)
1493 "Make a function from category CAT."
1495 ;; Functions are just returned as is.
1497 (gnus-functionp cat))
1498 `(,(or (cdr (assq cat gnus-category-predicate-alist))
1500 ;; More complex category.
1503 ((memq (car cat) '(& and))
1505 ((memq (car cat) '(| or))
1507 ((memq (car cat) gnus-category-not)
1509 ,@(mapcar 'gnus-category-make-function-1 (cdr cat))))
1511 (error "Unknown category type: %s" cat))))
1513 (defun gnus-get-predicate (predicate)
1514 "Return the predicate for CATEGORY."
1515 (or (cdr (assoc predicate gnus-category-predicate-cache))
1516 (cdar (push (cons predicate
1517 (gnus-category-make-function predicate))
1518 gnus-category-predicate-cache))))
1520 (defun gnus-group-category (group)
1521 "Return the category GROUP belongs to."
1522 (unless gnus-category-group-cache
1523 (setq gnus-category-group-cache (gnus-make-hashtable 1000))
1524 (let ((cs gnus-category-alist)
1526 (while (setq cat (pop cs))
1527 (setq groups (cadddr cat))
1529 (gnus-sethash (pop groups) cat gnus-category-group-cache)))))
1530 (or (gnus-gethash group gnus-category-group-cache)
1531 (assq 'default gnus-category-alist)))
1533 (defun gnus-agent-expire ()
1534 "Expire all old articles."
1536 (let ((methods gnus-agent-covered-methods)
1537 (day (- (time-to-days (current-time)) gnus-agent-expire-days))
1538 gnus-command-method sym group articles
1539 history overview file histories elem art nov-file low info
1540 unreads marked article orig lowest highest)
1542 (setq overview (gnus-get-buffer-create " *expire overview*"))
1543 (while (setq gnus-command-method (pop methods))
1544 (when (file-exists-p (gnus-agent-lib-file "active"))
1546 (nnheader-insert-file-contents (gnus-agent-lib-file "active"))
1547 (gnus-active-to-gnus-format
1549 (setq orig (gnus-make-hashtable
1550 (count-lines (point-min) (point-max))))))
1551 (let ((expiry-hashtb (gnus-make-hashtable 1023)))
1552 (gnus-agent-open-history)
1554 (setq gnus-agent-current-history
1555 (setq history (gnus-agent-history-buffer))))
1556 (goto-char (point-min))
1557 (when (> (buffer-size) 1)
1558 (goto-char (point-min))
1560 (skip-chars-forward "^\t")
1561 (if (let ((fetch-date (read (current-buffer))))
1562 (if (numberp fetch-date)
1564 ;; History file is corrupted.
1567 (format "File %s is corrupted!"
1568 (gnus-agent-lib-file "history")))
1572 ;; New article; we don't expire it.
1574 ;; Old article. Schedule it for possible nuking.
1576 (setq sym (let ((obarray expiry-hashtb) s)
1577 (setq s (read (current-buffer)))
1578 (if (stringp s) (intern s) s)))
1580 (set sym (cons (cons (read (current-buffer)) (point))
1581 (symbol-value sym)))
1582 (set sym (list (cons (read (current-buffer)) (point)))))
1583 (skip-chars-forward " "))
1585 ;; We now have all articles that can possibly be expired.
1588 (setq group (symbol-name sym)
1589 articles (sort (symbol-value sym) 'car-less-than-car)
1590 low (car (gnus-active group))
1591 info (gnus-get-info group)
1592 unreads (ignore-errors
1593 (gnus-list-of-unread-articles group))
1595 (gnus-uncompress-range
1596 (cdr (assq 'tick (gnus-info-marks info))))
1597 (gnus-uncompress-range
1599 (gnus-info-marks info)))))
1600 nov-file (gnus-agent-article-name ".overview" group)
1603 (gnus-agent-load-alist group)
1604 (gnus-message 5 "Expiring articles in %s" group)
1605 (set-buffer overview)
1607 (when (file-exists-p nov-file)
1608 (nnheader-insert-file-contents nov-file))
1609 (goto-char (point-min))
1611 (while (setq elem (pop articles))
1612 (setq article (car elem))
1613 (when (or (null low)
1615 gnus-agent-expire-all
1616 (and (not (memq article unreads))
1617 (not (memq article marked))))
1618 ;; Find and nuke the NOV line.
1619 (while (and (not (eobp))
1621 (setq art (read (current-buffer)))))
1623 (if (and (numberp art)
1625 (gnus-agent-article-name
1626 (number-to-string art) group)))
1632 ;; Remove old NOV lines that have no articles.
1633 (gnus-delete-line)))
1638 ;; Nuke the article.
1639 (when (file-exists-p
1640 (setq file (gnus-agent-article-name
1641 (number-to-string article)
1644 ;; Schedule the history line for nuking.
1645 (push (cdr elem) histories)))
1646 (gnus-make-directory (file-name-directory nov-file))
1647 (let ((coding-system-for-write
1648 gnus-agent-file-coding-system))
1649 (write-region (point-min) (point-max) nov-file nil 'silent))
1650 ;; Delete the unwanted entries in the alist.
1651 (setq gnus-agent-article-alist
1652 (sort gnus-agent-article-alist 'car-less-than-car))
1653 (let* ((alist gnus-agent-article-alist)
1654 (prev (cons nil alist))
1658 (<= (caar alist) article))
1659 (if (or (not (cdar alist))
1661 (gnus-agent-article-name
1666 (push (caar alist) expired)
1667 (setcdr prev (setq alist (cdr alist))))
1669 alist (cdr alist))))
1670 (setq gnus-agent-article-alist (cdr first))
1671 (gnus-agent-save-alist group)
1672 ;; Mark all articles up to the first article
1673 ;; in `gnus-article-alist' as read.
1674 (when (and info (caar gnus-agent-article-alist))
1675 (setcar (nthcdr 2 info)
1678 (cons 1 (- (caar gnus-agent-article-alist) 1)))))
1679 ;; Maybe everything has been expired from `gnus-article-alist'
1680 ;; and so the above marking as read could not be conducted,
1681 ;; or there are expired article within the range of the alist.
1684 (or (not (caar gnus-agent-article-alist))
1686 (caar gnus-agent-article-alist))))
1687 (setcar (nthcdr 2 info)
1690 (nreverse expired))))
1692 (concat "(gnus-group-set-info '"
1693 (gnus-prin1-to-string info)
1696 (if (gnus-gethash group orig)
1697 (setcar (gnus-gethash group orig) lowest)
1698 (gnus-sethash group (cons lowest highest) orig))))
1700 (set-buffer history)
1701 (setq histories (nreverse (sort histories '<)))
1703 (goto-char (pop histories))
1705 (gnus-agent-save-history)
1706 (gnus-agent-close-history)
1707 (gnus-write-active-file
1708 (gnus-agent-lib-file "active") orig))
1709 (gnus-message 4 "Expiry...done")))))))
1712 (defun gnus-agent-batch ()
1714 (let ((init-file-user "")
1715 (gnus-always-read-dribble-file t))
1717 (gnus-group-send-drafts)
1718 (gnus-agent-fetch-session))
1720 (provide 'gnus-agent)
1722 ;;; gnus-agent.el ends here