1 ;;; gnus-agent.el --- unplugged support for Gnus
2 ;; Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003
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.
36 (if (featurep 'xemacs)
42 (autoload 'gnus-server-update-server "gnus-srvr")
43 (autoload 'gnus-agent-customize-category "gnus-cus")
46 (defcustom gnus-agent-directory (nnheader-concat gnus-directory "agent/")
47 "Where the Gnus agent will store its files."
51 (defcustom gnus-agent-plugged-hook nil
52 "Hook run when plugging into the network."
56 (defcustom gnus-agent-unplugged-hook nil
57 "Hook run when unplugging from the network."
61 (defcustom gnus-agent-fetched-hook nil
62 "Hook run when finished fetching articles."
66 (defcustom gnus-agent-handle-level gnus-level-subscribed
67 "Groups on levels higher than this variable will be ignored by the Agent."
71 (defcustom gnus-agent-expire-days 7
72 "Read articles older than this will be expired.
73 If you wish to disable Agent expiring, see `gnus-agent-enable-expiration'."
75 :type '(number :tag "days"))
77 (defcustom gnus-agent-expire-all nil
78 "If non-nil, also expire unread, ticked and dormant articles.
79 If nil, only read articles will be expired."
83 (defcustom gnus-agent-group-mode-hook nil
84 "Hook run in Agent group minor modes."
88 ;; Extracted from gnus-xmas-redefine in order to preserve user settings
89 (when (featurep 'xemacs)
90 (add-hook 'gnus-agent-group-mode-hook 'gnus-xmas-agent-group-menu-add))
92 (defcustom gnus-agent-summary-mode-hook nil
93 "Hook run in Agent summary minor modes."
97 ;; Extracted from gnus-xmas-redefine in order to preserve user settings
98 (when (featurep 'xemacs)
99 (add-hook 'gnus-agent-summary-mode-hook 'gnus-xmas-agent-summary-menu-add))
101 (defcustom gnus-agent-server-mode-hook nil
102 "Hook run in Agent summary minor modes."
106 ;; Extracted from gnus-xmas-redefine in order to preserve user settings
107 (when (featurep 'xemacs)
108 (add-hook 'gnus-agent-server-mode-hook 'gnus-xmas-agent-server-menu-add))
110 (defcustom gnus-agent-confirmation-function 'y-or-n-p
111 "Function to confirm when error happens."
116 (defcustom gnus-agent-synchronize-flags 'ask
117 "Indicate if flags are synchronized when you plug in.
118 If this is `ask' the hook will query the user."
120 :type '(choice (const :tag "Always" t)
121 (const :tag "Never" nil)
122 (const :tag "Ask" ask))
125 (defcustom gnus-agent-go-online 'ask
126 "Indicate if offline servers go online when you plug in.
127 If this is `ask' the hook will query the user."
129 :type '(choice (const :tag "Always" t)
130 (const :tag "Never" nil)
131 (const :tag "Ask" ask))
134 (defcustom gnus-agent-mark-unread-after-downloaded t
135 "Indicate whether to mark articles unread after downloaded."
140 (defcustom gnus-agent-download-marks '(download)
141 "Marks for downloading."
143 :type '(repeat (symbol :tag "Mark"))
146 (defcustom gnus-agent-consider-all-articles nil
147 "When non-nil, the agent will let the agent predicate decide
148 whether articles need to be downloaded or not, for all articles. When
149 nil, the default, the agent will only let the predicate decide
150 whether unread articles are downloaded or not. If you enable this,
151 groups with large active ranges may open slower and you may also want
152 to look into the agent expiry settings to block the expiration of
153 read articles as they would just be downloaded again."
158 (defcustom gnus-agent-max-fetch-size 10000000 ;; 10 Mb
159 "Chunk size for `gnus-agent-fetch-session'.
160 The function will split its article fetches into chunks smaller than
165 (defcustom gnus-agent-enable-expiration 'ENABLE
166 "The default expiration state for each group.
167 When set to ENABLE, the default, `gnus-agent-expire' will expire old
168 contents from a group's local storage. This value may be overridden
169 to disable expiration in specific categories, topics, and groups. Of
170 course, you could change gnus-agent-enable-expiration to DISABLE then
171 enable expiration per categories, topics, and groups."
173 :type '(radio (const :format "Enable " ENABLE)
174 (const :format "Disable " DISABLE)))
176 (defcustom gnus-agent-expire-unagentized-dirs t
177 "*Whether expiration should expire in unagentized directories.
178 Have gnus-agent-expire scan the directories under
179 \(gnus-agent-directory) for groups that are no longer agentized.
180 When found, offer to remove them."
184 (defcustom gnus-agent-auto-agentize-methods '(nntp nnimap)
185 "Initially, all servers from these methods are agentized.
186 The user may remove or add servers using the Server buffer.
187 See Info node `(gnus)Server Buffer'."
188 :type '(repeat symbol)
191 (defcustom gnus-agent-queue-mail t
192 "Whether and when outgoing mail should be queued by the agent.
193 When `always', always queue outgoing mail. When nil, never
194 queue. Otherwise, queue if and only if unplugged."
196 :type '(radio (const :format "Always" always)
197 (const :format "Never" nil)
198 (const :format "When plugged" t)))
200 (defcustom gnus-agent-prompt-send-queue nil
201 "If non-nil, `gnus-group-send-queue' will prompt if called when
206 ;;; Internal variables
208 (defvar gnus-agent-history-buffers nil)
209 (defvar gnus-agent-buffer-alist nil)
210 (defvar gnus-agent-article-alist nil
211 "An assoc list identifying the articles whose headers have been fetched.
212 If successfully fetched, these headers will be stored in the group's overview
213 file. The key of each assoc pair is the article ID, the value of each assoc
214 pair is a flag indicating whether the identified article has been downloaded
215 \(gnus-agent-fetch-articles sets the value to the day of the download).
217 1) The last element of this list can not be expired as some
218 routines (for example, get-agent-fetch-headers) use the last
219 value to track which articles have had their headers retrieved.
220 2) The function `gnus-agent-regenerate' may destructively modify the value.")
221 (defvar gnus-agent-group-alist nil)
222 (defvar gnus-category-alist nil)
223 (defvar gnus-agent-current-history nil)
224 (defvar gnus-agent-overview-buffer nil)
225 (defvar gnus-category-predicate-cache nil)
226 (defvar gnus-category-group-cache nil)
227 (defvar gnus-agent-spam-hashtb nil)
228 (defvar gnus-agent-file-name nil)
229 (defvar gnus-agent-send-mail-function nil)
230 (defvar gnus-agent-file-coding-system 'raw-text)
231 (defvar gnus-agent-file-loading-cache nil)
232 (defvar gnus-agent-file-header-cache nil)
235 (defvar gnus-headers)
242 (defun gnus-open-agent ()
244 (gnus-agent-read-servers)
246 (gnus-agent-create-buffer)
247 (add-hook 'gnus-group-mode-hook 'gnus-agent-mode)
248 (add-hook 'gnus-summary-mode-hook 'gnus-agent-mode)
249 (add-hook 'gnus-server-mode-hook 'gnus-agent-mode))
251 (defun gnus-agent-create-buffer ()
252 (if (gnus-buffer-live-p gnus-agent-overview-buffer)
254 (setq gnus-agent-overview-buffer
255 (gnus-get-buffer-create " *Gnus agent overview*"))
256 (with-current-buffer gnus-agent-overview-buffer
257 (mm-enable-multibyte))
260 (gnus-add-shutdown 'gnus-close-agent 'gnus)
262 (defun gnus-close-agent ()
263 (setq gnus-category-predicate-cache nil
264 gnus-category-group-cache nil
265 gnus-agent-spam-hashtb nil)
266 (gnus-kill-buffer gnus-agent-overview-buffer))
269 ;;; Utility functions
272 (defun gnus-agent-read-file (file)
273 "Load FILE and do a `read' there."
276 (nnheader-insert-file-contents file)
277 (goto-char (point-min))
278 (read (current-buffer)))))
280 (defsubst gnus-agent-method ()
281 (concat (symbol-name (car gnus-command-method)) "/"
282 (if (equal (cadr gnus-command-method) "")
284 (cadr gnus-command-method))))
286 (defsubst gnus-agent-directory ()
287 "The name of the Gnus agent directory."
288 (nnheader-concat gnus-agent-directory
289 (nnheader-translate-file-chars (gnus-agent-method)) "/"))
291 (defun gnus-agent-lib-file (file)
292 "The full name of the Gnus agent library FILE."
293 (expand-file-name file
294 (file-name-as-directory
295 (expand-file-name "agent.lib" (gnus-agent-directory)))))
297 (defun gnus-agent-cat-set-property (category property value)
299 (setcdr (or (assq property category)
300 (let ((cell (cons property nil)))
301 (setcdr category (cons cell (cdr category)))
303 (let ((category category))
304 (while (cond ((eq property (caadr category))
305 (setcdr category (cddr category))
308 (setq category (cdr category)))))))
312 (defmacro gnus-agent-cat-defaccessor (name prop-name)
313 "Define accessor and setter methods for manipulating a list of the form
314 \(NAME (PROPERTY1 VALUE1) ... (PROPERTY_N VALUE_N)).
315 Given the call (gnus-agent-cat-defaccessor func PROPERTY1), the list may be
316 manipulated as follows:
317 (func LIST): Returns VALUE1
318 (setf (func LIST) NEW_VALUE1): Replaces VALUE1 with NEW_VALUE1."
319 `(progn (defmacro ,name (category)
320 (list (quote cdr) (list (quote assq)
321 (quote (quote ,prop-name)) category)))
323 (define-setf-method ,name (category)
324 (let* ((--category--temp-- (make-symbol "--category--"))
325 (--value--temp-- (make-symbol "--value--")))
326 (list (list --category--temp--) ; temporary-variables
327 (list category) ; value-forms
328 (list --value--temp--) ; store-variables
329 (let* ((category --category--temp--) ; store-form
330 (value --value--temp--))
331 (list (quote gnus-agent-cat-set-property)
333 (quote (quote ,prop-name))
335 (list (quote ,name) --category--temp--) ; access-form
339 (defmacro gnus-agent-cat-name (category)
342 (gnus-agent-cat-defaccessor
343 gnus-agent-cat-days-until-old agent-days-until-old)
344 (gnus-agent-cat-defaccessor
345 gnus-agent-cat-enable-expiration agent-enable-expiration)
346 (gnus-agent-cat-defaccessor
347 gnus-agent-cat-groups agent-groups)
348 (gnus-agent-cat-defaccessor
349 gnus-agent-cat-high-score agent-high-score)
350 (gnus-agent-cat-defaccessor
351 gnus-agent-cat-length-when-long agent-length-when-long)
352 (gnus-agent-cat-defaccessor
353 gnus-agent-cat-length-when-short agent-length-when-short)
354 (gnus-agent-cat-defaccessor
355 gnus-agent-cat-low-score agent-low-score)
356 (gnus-agent-cat-defaccessor
357 gnus-agent-cat-predicate agent-predicate)
358 (gnus-agent-cat-defaccessor
359 gnus-agent-cat-score-file agent-score-file)
360 (gnus-agent-cat-defaccessor
361 gnus-agent-cat-enable-undownloaded-faces agent-enable-undownloaded-faces)
364 (defsetf gnus-agent-cat-groups (category) (groups)
365 (list 'gnus-agent-set-cat-groups category groups)))
367 (defun gnus-agent-set-cat-groups (category groups)
368 (unless (eq groups 'ignore)
370 (old-g (gnus-agent-cat-groups category)))
371 (cond ((eq new-g old-g)
372 ;; gnus-agent-add-group is fiddling with the group
373 ;; list. Still, Im done.
376 ((eq new-g (cdr old-g))
377 ;; gnus-agent-add-group is fiddling with the group list
378 (setcdr (or (assq 'agent-groups category)
379 (let ((cell (cons 'agent-groups nil)))
380 (setcdr category (cons cell (cdr category)))
383 (let ((groups groups))
385 (let* ((group (pop groups))
386 (old-category (gnus-group-category group)))
387 (if (eq category old-category)
389 (setf (gnus-agent-cat-groups old-category)
390 (delete group (gnus-agent-cat-groups
392 ;; Purge cache as preceeding loop invalidated it.
393 (setq gnus-category-group-cache nil))
395 (setcdr (or (assq 'agent-groups category)
396 (let ((cell (cons 'agent-groups nil)))
397 (setcdr category (cons cell (cdr category)))
400 (defsubst gnus-agent-cat-make (name &optional default-agent-predicate)
401 (list name `(agent-predicate . ,(or default-agent-predicate 'false))))
403 ;;; Fetching setup functions.
405 (defun gnus-agent-start-fetch ()
406 "Initialize data structures for efficient fetching."
407 (gnus-agent-create-buffer))
409 (defun gnus-agent-stop-fetch ()
410 "Save all data structures and clean up."
411 (setq gnus-agent-spam-hashtb nil)
413 (set-buffer nntp-server-buffer)
416 (defmacro gnus-agent-with-fetch (&rest forms)
419 (let ((gnus-agent-fetching t))
420 (gnus-agent-start-fetch)
422 (gnus-agent-stop-fetch)))
424 (put 'gnus-agent-with-fetch 'lisp-indent-function 0)
425 (put 'gnus-agent-with-fetch 'edebug-form-spec '(body))
427 (defmacro gnus-agent-append-to-list (tail value)
428 `(setq ,tail (setcdr ,tail (cons ,value nil))))
430 (defmacro gnus-agent-message (level &rest args)
431 `(if (<= ,level gnus-verbose)
438 (defvar gnus-agent-mode-hook nil
439 "Hook run when installing agent mode.")
441 (defvar gnus-agent-mode nil)
442 (defvar gnus-agent-mode-status '(gnus-agent-mode " Plugged"))
444 (defun gnus-agent-mode ()
445 "Minor mode for providing a agent support in Gnus buffers."
446 (let* ((buffer (progn (string-match "^gnus-\\(.*\\)-mode$"
447 (symbol-name major-mode))
448 (match-string 1 (symbol-name major-mode))))
449 (mode (intern (format "gnus-agent-%s-mode" buffer))))
450 (set (make-local-variable 'gnus-agent-mode) t)
452 (set (make-local-variable mode) t)
454 (when (gnus-visual-p 'agent-menu 'menu)
455 (funcall (intern (format "gnus-agent-%s-make-menu-bar" buffer))))
456 (unless (assq 'gnus-agent-mode minor-mode-alist)
457 (push gnus-agent-mode-status minor-mode-alist))
458 (unless (assq mode minor-mode-map-alist)
459 (push (cons mode (symbol-value (intern (format "gnus-agent-%s-mode-map"
461 minor-mode-map-alist))
462 (when (eq major-mode 'gnus-group-mode)
463 (let ((init-plugged gnus-plugged)
464 (gnus-agent-go-online nil))
465 ;; g-a-t-p does nothing when gnus-plugged isn't changed.
466 ;; Therefore, make certain that the current value does not
467 ;; match the desired initial value.
468 (setq gnus-plugged :unknown)
469 (gnus-agent-toggle-plugged init-plugged)))
470 (gnus-run-hooks 'gnus-agent-mode-hook
471 (intern (format "gnus-agent-%s-mode-hook" buffer)))))
473 (defvar gnus-agent-group-mode-map (make-sparse-keymap))
474 (gnus-define-keys gnus-agent-group-mode-map
475 "Ju" gnus-agent-fetch-groups
476 "Jc" gnus-enter-category-buffer
477 "Jj" gnus-agent-toggle-plugged
478 "Js" gnus-agent-fetch-session
479 "JY" gnus-agent-synchronize-flags
480 "JS" gnus-group-send-queue
481 "Ja" gnus-agent-add-group
482 "Jr" gnus-agent-remove-group
483 "Jo" gnus-agent-toggle-group-plugged)
485 (defun gnus-agent-group-make-menu-bar ()
486 (unless (boundp 'gnus-agent-group-menu)
488 gnus-agent-group-menu gnus-agent-group-mode-map ""
490 ["Toggle plugged" gnus-agent-toggle-plugged t]
491 ["Toggle group plugged" gnus-agent-toggle-group-plugged t]
492 ["List categories" gnus-enter-category-buffer t]
493 ["Add (current) group to category" gnus-agent-add-group t]
494 ["Remove (current) group from category" gnus-agent-remove-group t]
495 ["Send queue" gnus-group-send-queue gnus-plugged]
497 ["All" gnus-agent-fetch-session gnus-plugged]
498 ["Group" gnus-agent-fetch-group gnus-plugged])
499 ["Synchronize flags" gnus-agent-synchronize-flags t]
502 (defvar gnus-agent-summary-mode-map (make-sparse-keymap))
503 (gnus-define-keys gnus-agent-summary-mode-map
504 "Jj" gnus-agent-toggle-plugged
505 "Ju" gnus-agent-summary-fetch-group
506 "JS" gnus-agent-fetch-group
507 "Js" gnus-agent-summary-fetch-series
508 "J#" gnus-agent-mark-article
509 "J\M-#" gnus-agent-unmark-article
510 "@" gnus-agent-toggle-mark
511 "Jc" gnus-agent-catchup)
513 (defun gnus-agent-summary-make-menu-bar ()
514 (unless (boundp 'gnus-agent-summary-menu)
516 gnus-agent-summary-menu gnus-agent-summary-mode-map ""
518 ["Toggle plugged" gnus-agent-toggle-plugged t]
519 ["Mark as downloadable" gnus-agent-mark-article t]
520 ["Unmark as downloadable" gnus-agent-unmark-article t]
521 ["Toggle mark" gnus-agent-toggle-mark t]
522 ["Fetch downloadable" gnus-agent-summary-fetch-group t]
523 ["Catchup undownloaded" gnus-agent-catchup t]))))
525 (defvar gnus-agent-server-mode-map (make-sparse-keymap))
526 (gnus-define-keys gnus-agent-server-mode-map
527 "Jj" gnus-agent-toggle-plugged
528 "Ja" gnus-agent-add-server
529 "Jr" gnus-agent-remove-server)
531 (defun gnus-agent-server-make-menu-bar ()
532 (unless (boundp 'gnus-agent-server-menu)
534 gnus-agent-server-menu gnus-agent-server-mode-map ""
536 ["Toggle plugged" gnus-agent-toggle-plugged t]
537 ["Add" gnus-agent-add-server t]
538 ["Remove" gnus-agent-remove-server t]))))
540 (defun gnus-agent-make-mode-line-string (string mouse-button mouse-func)
541 (if (and (fboundp 'propertize)
542 (fboundp 'make-mode-line-mouse-map))
543 (propertize string 'local-map
544 (make-mode-line-mouse-map mouse-button mouse-func))
547 (defun gnus-agent-toggle-plugged (set-to)
548 "Toggle whether Gnus is unplugged or not."
549 (interactive (list (not gnus-plugged)))
550 (cond ((eq set-to gnus-plugged)
553 (setq gnus-plugged set-to)
554 (gnus-run-hooks 'gnus-agent-plugged-hook)
555 (setcar (cdr gnus-agent-mode-status)
556 (gnus-agent-make-mode-line-string " Plugged"
558 'gnus-agent-toggle-plugged))
559 (gnus-agent-go-online gnus-agent-go-online)
560 (gnus-agent-possibly-synchronize-flags))
562 (gnus-agent-close-connections)
563 (setq gnus-plugged set-to)
564 (gnus-run-hooks 'gnus-agent-unplugged-hook)
565 (setcar (cdr gnus-agent-mode-status)
566 (gnus-agent-make-mode-line-string " Unplugged"
568 'gnus-agent-toggle-plugged))))
569 (set-buffer-modified-p t))
571 (defmacro gnus-agent-while-plugged (&rest body)
572 `(let ((original-gnus-plugged gnus-plugged))
574 (progn (gnus-agent-toggle-plugged t)
576 (gnus-agent-toggle-plugged original-gnus-plugged))))
578 (put 'gnus-agent-while-plugged 'lisp-indent-function 0)
579 (put 'gnus-agent-while-plugged 'edebug-form-spec '(body))
581 (defun gnus-agent-close-connections ()
582 "Close all methods covered by the Gnus agent."
583 (let ((methods (gnus-agent-covered-methods)))
585 (gnus-close-server (pop methods)))))
588 (defun gnus-unplugged ()
589 "Start Gnus unplugged."
591 (setq gnus-plugged nil)
595 (defun gnus-plugged ()
596 "Start Gnus plugged."
598 (setq gnus-plugged t)
602 (defun gnus-slave-unplugged (&optional arg)
603 "Read news as a slave unplugged."
605 (setq gnus-plugged nil)
606 (gnus arg nil 'slave))
609 (defun gnus-agentize ()
610 "Allow Gnus to be an offline newsreader.
612 The gnus-agentize function is now called internally by gnus when
613 gnus-agent is set. If you wish to avoid calling gnus-agentize,
614 customize gnus-agent to nil.
616 This will modify the `gnus-setup-news-hook', and
617 `message-send-mail-real-function' variables, and install the Gnus agent
618 minor mode in all Gnus buffers."
621 (add-hook 'gnus-setup-news-hook 'gnus-agent-queue-setup)
622 (unless gnus-agent-send-mail-function
623 (setq gnus-agent-send-mail-function
624 (or message-send-mail-real-function
625 message-send-mail-function)
626 message-send-mail-real-function 'gnus-agent-send-mail))
628 ;; If the servers file doesn't exist, auto-agentize some servers and
629 ;; save the servers file so this auto-agentizing isn't invoked
631 (unless (file-exists-p (nnheader-concat gnus-agent-directory "lib/servers"))
632 (gnus-message 3 "First time agent user, agentizing remote groups...")
634 (lambda (server-or-method)
635 (let ((method (gnus-server-to-method server-or-method)))
636 (when (memq (car method)
637 gnus-agent-auto-agentize-methods)
638 (push (gnus-method-to-server method)
639 gnus-agent-covered-methods)
640 (setq gnus-agent-method-p-cache nil))))
641 (cons gnus-select-method gnus-secondary-select-methods))
642 (gnus-agent-write-servers)))
644 (defun gnus-agent-queue-setup (&optional group-name)
645 "Make sure the queue group exists.
646 Optional arg GROUP-NAME allows to specify another group."
647 (unless (gnus-gethash (format "nndraft:%s" (or group-name "queue"))
649 (gnus-request-create-group (or group-name "queue") '(nndraft ""))
650 (let ((gnus-level-default-subscribed 1))
651 (gnus-subscribe-group (format "nndraft:%s" (or group-name "queue"))
653 (gnus-group-set-parameter
654 (format "nndraft:%s" (or group-name "queue"))
655 'gnus-dummy '((gnus-draft-mode)))))
657 (defun gnus-agent-send-mail ()
658 (if (or (not gnus-agent-queue-mail)
659 (and gnus-plugged (not (eq gnus-agent-queue-mail 'always))))
660 (funcall gnus-agent-send-mail-function)
661 (goto-char (point-min))
663 (concat "^" (regexp-quote mail-header-separator) "\n"))
665 (gnus-agent-insert-meta-information 'mail)
666 (gnus-request-accept-article "nndraft:queue" nil t t)))
668 (defun gnus-agent-insert-meta-information (type &optional method)
669 "Insert meta-information into the message that says how it's to be posted.
670 TYPE can be either `mail' or `news'. If the latter, then METHOD can
673 (message-remove-header gnus-agent-meta-information-header)
674 (goto-char (point-min))
675 (insert gnus-agent-meta-information-header ": "
676 (symbol-name type) " " (format "%S" method)
679 (while (search-backward "\n" nil t)
680 (replace-match "\\n" t t))))
682 (defun gnus-agent-restore-gcc ()
683 "Restore GCC field from saved header."
685 (goto-char (point-min))
686 (while (re-search-forward (concat gnus-agent-gcc-header ":") nil t)
687 (replace-match "Gcc:" 'fixedcase))))
689 (defun gnus-agent-any-covered-gcc ()
691 (message-narrow-to-headers)
692 (let* ((gcc (mail-fetch-field "gcc" nil t))
694 (mapcar 'gnus-inews-group-method
695 (message-unquote-tokens
696 (message-tokenize-header
699 (while (and (not covered) methods)
700 (setq covered (gnus-agent-method-p (car methods))
701 methods (cdr methods)))
705 (defun gnus-agent-possibly-save-gcc ()
706 "Save GCC if Gnus is unplugged."
707 (when (and (not gnus-plugged) (gnus-agent-any-covered-gcc))
709 (goto-char (point-min))
710 (let ((case-fold-search t))
711 (while (re-search-forward "^gcc:" nil t)
712 (replace-match (concat gnus-agent-gcc-header ":") 'fixedcase))))))
714 (defun gnus-agent-possibly-do-gcc ()
715 "Do GCC if Gnus is plugged."
716 (when (or gnus-plugged (not (gnus-agent-any-covered-gcc)))
717 (gnus-inews-do-gcc)))
720 ;;; Group mode commands
723 (defun gnus-agent-fetch-groups (n)
724 "Put all new articles in the current groups into the Agent."
727 (error "Groups can't be fetched when Gnus is unplugged"))
728 (gnus-group-iterate n 'gnus-agent-fetch-group))
730 (defun gnus-agent-fetch-group (&optional group)
731 "Put all new articles in GROUP into the Agent."
732 (interactive (list (gnus-group-group-name)))
733 (setq group (or group gnus-newsgroup-name))
735 (error "No group on the current line"))
737 (gnus-agent-while-plugged
738 (let ((gnus-command-method (gnus-find-method-for-group group)))
739 (gnus-agent-with-fetch
740 (gnus-agent-fetch-group-1 group gnus-command-method)
741 (gnus-message 5 "Fetching %s...done" group)))))
743 (defun gnus-agent-add-group (category arg)
744 "Add the current group to an agent category."
750 (mapcar (lambda (cat) (list (symbol-name (car cat))))
754 (let ((cat (assq category gnus-category-alist))
756 (gnus-group-iterate arg
758 (when (gnus-agent-cat-groups (setq c (gnus-group-category group)))
759 (setf (gnus-agent-cat-groups c)
760 (delete group (gnus-agent-cat-groups c))))
761 (push group groups)))
762 (setf (gnus-agent-cat-groups cat)
763 (nconc (gnus-agent-cat-groups cat) groups))
764 (gnus-category-write)))
766 (defun gnus-agent-remove-group (arg)
767 "Remove the current group from its agent category, if any."
770 (gnus-group-iterate arg
772 (when (gnus-agent-cat-groups (setq c (gnus-group-category group)))
773 (setf (gnus-agent-cat-groups c)
774 (delete group (gnus-agent-cat-groups c))))))
775 (gnus-category-write)))
777 (defun gnus-agent-synchronize-flags ()
778 "Synchronize unplugged flags with servers."
781 (dolist (gnus-command-method (gnus-agent-covered-methods))
782 (when (file-exists-p (gnus-agent-lib-file "flags"))
783 (gnus-agent-synchronize-flags-server gnus-command-method)))))
785 (defun gnus-agent-possibly-synchronize-flags ()
786 "Synchronize flags according to `gnus-agent-synchronize-flags'."
789 (dolist (gnus-command-method (gnus-agent-covered-methods))
790 (when (file-exists-p (gnus-agent-lib-file "flags"))
791 (gnus-agent-possibly-synchronize-flags-server gnus-command-method)))))
793 (defun gnus-agent-synchronize-flags-server (method)
794 "Synchronize flags set when unplugged for server."
795 (let ((gnus-command-method method))
796 (when (file-exists-p (gnus-agent-lib-file "flags"))
797 (set-buffer (get-buffer-create " *Gnus Agent flag synchronize*"))
799 (nnheader-insert-file-contents (gnus-agent-lib-file "flags"))
800 (if (null (gnus-check-server gnus-command-method))
801 (gnus-message 1 "Couldn't open server %s" (nth 1 gnus-command-method))
803 (if (null (eval (read (current-buffer))))
805 (write-file (gnus-agent-lib-file "flags"))
806 (error "Couldn't set flags from file %s"
807 (gnus-agent-lib-file "flags"))))
808 (delete-file (gnus-agent-lib-file "flags")))
811 (defun gnus-agent-possibly-synchronize-flags-server (method)
812 "Synchronize flags for server according to `gnus-agent-synchronize-flags'."
813 (when (or (and gnus-agent-synchronize-flags
814 (not (eq gnus-agent-synchronize-flags 'ask)))
815 (and (eq gnus-agent-synchronize-flags 'ask)
816 (gnus-y-or-n-p (format "Synchronize flags on server `%s'? "
818 (gnus-agent-synchronize-flags-server method)))
821 ;;; Server mode commands
824 (defun gnus-agent-add-server ()
825 "Enroll SERVER in the agent program."
827 (let* ((server (gnus-server-server-name))
828 (named-server (gnus-server-named-server))
830 (gnus-server-get-method nil server))))
832 (error "No server on the current line"))
834 (when (gnus-agent-method-p method)
835 (error "Server already in the agent program"))
837 (push named-server gnus-agent-covered-methods)
839 (setq gnus-agent-method-p-cache nil)
840 (gnus-server-update-server server)
841 (gnus-agent-write-servers)
842 (gnus-message 1 "Entered %s into the Agent" server)))
844 (defun gnus-agent-remove-server ()
845 "Remove SERVER from the agent program."
847 (let* ((server (gnus-server-server-name))
848 (named-server (gnus-server-named-server)))
850 (error "No server on the current line"))
852 (unless (member named-server gnus-agent-covered-methods)
853 (error "Server not in the agent program"))
855 (setq gnus-agent-covered-methods
856 (delete named-server gnus-agent-covered-methods)
857 gnus-agent-method-p-cache nil)
859 (gnus-server-update-server server)
860 (gnus-agent-write-servers)
861 (gnus-message 1 "Removed %s from the agent" server)))
863 (defun gnus-agent-read-servers ()
864 "Read the alist of covered servers."
865 (setq gnus-agent-covered-methods
866 (gnus-agent-read-file
867 (nnheader-concat gnus-agent-directory "lib/servers"))
868 gnus-agent-method-p-cache nil)
870 ;; I am called so early in start-up that I can not validate server
871 ;; names. When that is the case, I skip the validation. That is
872 ;; alright as the gnus startup code calls the validate methods
874 (if gnus-server-alist
875 (gnus-agent-read-servers-validate)))
877 (defun gnus-agent-read-servers-validate ()
878 (mapcar (lambda (server-or-method)
879 (let* ((server (if (stringp server-or-method)
881 (gnus-method-to-server server-or-method)))
882 (method (gnus-server-to-method server)))
884 (unless (member server gnus-agent-covered-methods)
885 (push server gnus-agent-covered-methods)
886 (setq gnus-agent-method-p-cache nil))
887 (gnus-message 1 "Ignoring disappeared server `%s'" server))))
888 (prog1 gnus-agent-covered-methods
889 (setq gnus-agent-covered-methods nil))))
891 (defun gnus-agent-read-servers-validate-native (native-method)
892 (setq gnus-agent-covered-methods
893 (mapcar (lambda (method)
895 (equal method native-method))
897 method)) gnus-agent-covered-methods)))
899 (defun gnus-agent-write-servers ()
900 "Write the alist of covered servers."
901 (gnus-make-directory (nnheader-concat gnus-agent-directory "lib"))
902 (let ((coding-system-for-write nnheader-file-coding-system)
903 (file-name-coding-system nnmail-pathname-coding-system))
904 (with-temp-file (nnheader-concat gnus-agent-directory "lib/servers")
905 (prin1 gnus-agent-covered-methods
912 (defun gnus-agent-mark-article (n &optional unmark)
913 "Mark the next N articles as downloadable.
914 If N is negative, mark backward instead. If UNMARK is non-nil, remove
915 the mark instead. The difference between N and the actual number of
916 articles marked is returned."
918 (let ((backward (< n 0))
923 (gnus-summary-set-agent-mark
924 (gnus-summary-article-number) unmark)
925 (zerop (gnus-summary-next-subject (if backward -1 1) nil t))))
928 (gnus-message 7 "No more articles"))
929 (gnus-summary-recenter)
930 (gnus-summary-position-point)
933 (defun gnus-agent-unmark-article (n)
934 "Remove the downloadable mark from the next N articles.
935 If N is negative, unmark backward instead. The difference between N and
936 the actual number of articles unmarked is returned."
938 (gnus-agent-mark-article n t))
940 (defun gnus-agent-toggle-mark (n)
941 "Toggle the downloadable mark from the next N articles.
942 If N is negative, toggle backward instead. The difference between N and
943 the actual number of articles toggled is returned."
945 (gnus-agent-mark-article n 'toggle))
947 (defun gnus-summary-set-agent-mark (article &optional unmark)
948 "Mark ARTICLE as downloadable. If UNMARK is nil, article is marked.
949 When UNMARK is t, the article is unmarked. For any other value, the
950 article's mark is toggled."
951 (let ((unmark (cond ((eq nil unmark)
956 (memq article gnus-newsgroup-downloadable)))))
957 (when (gnus-summary-goto-subject article nil t)
958 (gnus-summary-update-mark
961 (setq gnus-newsgroup-downloadable
962 (delq article gnus-newsgroup-downloadable))
963 (gnus-article-mark article))
964 (setq gnus-newsgroup-downloadable
965 (gnus-add-to-sorted-list gnus-newsgroup-downloadable article))
966 gnus-downloadable-mark)
969 (defun gnus-agent-get-undownloaded-list ()
970 "Construct list of articles that have not been downloaded."
971 (let ((gnus-command-method (gnus-find-method-for-group gnus-newsgroup-name)))
972 (when (set (make-local-variable 'gnus-newsgroup-agentized)
973 (gnus-agent-method-p gnus-command-method))
974 (let* ((alist (gnus-agent-load-alist gnus-newsgroup-name))
975 (headers (sort (mapcar (lambda (h)
976 (mail-header-number h))
977 gnus-newsgroup-headers) '<))
978 (cached (and gnus-use-cache gnus-newsgroup-cached))
979 (undownloaded (list nil))
980 (tail-undownloaded undownloaded)
981 (unfetched (list nil))
982 (tail-unfetched unfetched))
983 (while (and alist headers)
984 (let ((a (caar alist))
987 ;; Ignore IDs in the alist that are not being
988 ;; displayed in the summary.
989 (setq alist (cdr alist)))
991 ;; Headers that are not in the alist should be
992 ;; fictious (see nnagent-retrieve-headers); they
993 ;; imply that this article isn't in the agent.
994 (gnus-agent-append-to-list tail-undownloaded h)
995 (gnus-agent-append-to-list tail-unfetched h)
996 (setq headers (cdr headers)))
998 (setq alist (cdr alist))
999 (setq headers (cdr headers))
1000 nil ; ignore already downloaded
1003 (setq alist (cdr alist))
1004 (setq headers (cdr headers))
1006 ;; This article isn't in the agent. Check to see
1007 ;; if it is in the cache. If it is, it's been
1009 (while (and cached (< (car cached) a))
1010 (setq cached (cdr cached)))
1011 (unless (equal a (car cached))
1012 (gnus-agent-append-to-list tail-undownloaded a))))))
1015 (let ((num (pop headers)))
1016 (gnus-agent-append-to-list tail-undownloaded num)
1017 (gnus-agent-append-to-list tail-unfetched num)))
1019 (setq gnus-newsgroup-undownloaded (cdr undownloaded)
1020 gnus-newsgroup-unfetched (cdr unfetched))))))
1022 (defun gnus-agent-catchup ()
1023 "Mark as read all unhandled articles.
1024 An article is unhandled if it is neither cached, nor downloaded, nor
1028 (let ((articles gnus-newsgroup-undownloaded))
1029 (when (or gnus-newsgroup-downloadable
1030 gnus-newsgroup-cached)
1031 (setq articles (gnus-sorted-ndifference
1032 (gnus-sorted-ndifference
1033 (gnus-copy-sequence articles)
1034 gnus-newsgroup-downloadable)
1035 gnus-newsgroup-cached)))
1038 (gnus-summary-mark-article
1039 (pop articles) gnus-catchup-mark)))
1040 (gnus-summary-position-point)))
1042 (defun gnus-agent-summary-fetch-series ()
1044 (when gnus-newsgroup-processable
1045 (setq gnus-newsgroup-downloadable
1046 (let* ((dl gnus-newsgroup-downloadable)
1047 (gnus-newsgroup-downloadable
1048 (sort (gnus-copy-sequence gnus-newsgroup-processable) '<))
1049 (fetched-articles (gnus-agent-summary-fetch-group)))
1050 ;; The preceeding call to (gnus-agent-summary-fetch-group)
1051 ;; updated gnus-newsgroup-downloadable to remove each
1052 ;; article successfully fetched.
1054 ;; For each article that I processed, remove its
1055 ;; processable mark IF the article is no longer
1056 ;; downloadable (i.e. it's already downloaded)
1057 (dolist (article gnus-newsgroup-processable)
1058 (unless (memq article gnus-newsgroup-downloadable)
1059 (gnus-summary-remove-process-mark article)))
1060 (gnus-sorted-ndifference dl fetched-articles)))))
1062 (defun gnus-agent-summary-fetch-group (&optional all)
1063 "Fetch the downloadable articles in the group.
1064 Optional arg ALL, if non-nil, means to fetch all articles."
1067 (if all gnus-newsgroup-articles
1068 gnus-newsgroup-downloadable))
1069 (gnus-command-method (gnus-find-method-for-group gnus-newsgroup-name))
1071 (gnus-agent-while-plugged
1073 (error "No articles to download"))
1074 (gnus-agent-with-fetch
1075 (setq gnus-newsgroup-undownloaded
1076 (gnus-sorted-ndifference
1077 gnus-newsgroup-undownloaded
1078 (setq fetched-articles
1079 (gnus-agent-fetch-articles
1080 gnus-newsgroup-name articles)))))
1082 (dolist (article articles)
1083 (let ((was-marked-downloadable
1084 (memq article gnus-newsgroup-downloadable)))
1085 (cond (gnus-agent-mark-unread-after-downloaded
1086 (setq gnus-newsgroup-downloadable
1087 (delq article gnus-newsgroup-downloadable))
1089 (gnus-summary-mark-article article gnus-unread-mark))
1090 (was-marked-downloadable
1091 (gnus-summary-set-agent-mark article t)))
1092 (when (gnus-summary-goto-subject article nil t)
1093 (gnus-summary-update-download-mark article))))))
1096 (defun gnus-agent-fetch-selected-article ()
1097 "Fetch the current article as it is selected.
1098 This can be added to `gnus-select-article-hook' or
1099 `gnus-mark-article-hook'."
1100 (let ((gnus-command-method gnus-current-select-method))
1101 (when (and gnus-plugged (gnus-agent-method-p gnus-command-method))
1102 (when (gnus-agent-fetch-articles
1104 (list gnus-current-article))
1105 (setq gnus-newsgroup-undownloaded
1106 (delq gnus-current-article gnus-newsgroup-undownloaded))
1107 (gnus-summary-update-download-mark gnus-current-article)))))
1110 ;;; Internal functions
1113 (defun gnus-agent-save-active (method)
1114 (when (gnus-agent-method-p method)
1115 (let* ((gnus-command-method method)
1116 (new (gnus-make-hashtable (count-lines (point-min) (point-max))))
1117 (file (gnus-agent-lib-file "active")))
1118 (gnus-active-to-gnus-format nil new)
1119 (gnus-agent-write-active file new)
1121 (nnheader-insert-file-contents file))))
1123 (defun gnus-agent-write-active (file new)
1124 (gnus-make-directory (file-name-directory file))
1125 (let ((nnmail-active-file-coding-system gnus-agent-file-coding-system))
1126 ;; The hashtable contains real names of groups. However, do NOT
1127 ;; add the foreign server prefix as gnus-active-to-gnus-format
1128 ;; will add it while reading the file.
1129 (gnus-write-active-file file new nil)))
1131 (defun gnus-agent-possibly-alter-active (group active &optional info)
1132 "Possibly expand a group's active range to include articles
1133 downloaded into the agent."
1134 (let* ((gnus-command-method (or gnus-command-method
1135 (gnus-find-method-for-group group))))
1136 (when (gnus-agent-method-p gnus-command-method)
1137 (let* ((local (gnus-agent-get-local group))
1138 (active-min (car active))
1139 (active-max (cdr active))
1140 (agent-min (or (car local) active-min))
1141 (agent-max (or (cdr local) active-max)))
1143 (when (< agent-min active-min)
1144 (setcar active agent-min))
1146 (when (> agent-max active-max)
1147 (setcdr active agent-max))
1149 (when (and info (< agent-max (- active-min 100)))
1150 ;; I'm expanding the active range by such a large amount
1151 ;; that there is a gap of more than 100 articles between the
1152 ;; last article known to the agent and the first article
1153 ;; currently available on the server. This gap contains
1154 ;; articles that have been lost, mark them as read so that
1155 ;; gnus doesn't waste resources trying to fetch them.
1157 ;; NOTE: I don't do this for smaller gaps (< 100) as I don't
1158 ;; want to modify the local file everytime someone restarts
1159 ;; gnus. The small gap will cause a tiny performance hit
1160 ;; when gnus tries, and fails, to retrieve the articles.
1161 ;; Still that should be smaller than opening a buffer,
1162 ;; printing this list to the buffer, and then writing it to a
1165 (let ((read (gnus-info-read info)))
1170 (list (cons (1+ agent-max)
1171 (1- active-min))))))
1173 ;; Lie about the agent's local range for this group to
1174 ;; disable the set read each time this server is opened.
1175 ;; NOTE: Opening this group will restore the valid local
1176 ;; range but it will also expand the local range to
1177 ;; incompass the new active range.
1178 (gnus-agent-set-local group agent-min (1- active-min)))))))
1180 (defun gnus-agent-save-group-info (method group active)
1181 "Update a single group's active range in the agent's copy of the server's active file."
1182 (when (gnus-agent-method-p method)
1183 (let* ((gnus-command-method method)
1184 (coding-system-for-write nnheader-file-coding-system)
1185 (file-name-coding-system nnmail-pathname-coding-system)
1186 (file (gnus-agent-lib-file "active"))
1187 oactive-min oactive-max)
1188 (gnus-make-directory (file-name-directory file))
1189 (with-temp-file file
1190 ;; Emacs got problem to match non-ASCII group in multibyte buffer.
1191 (mm-disable-multibyte)
1192 (when (file-exists-p file)
1193 (nnheader-insert-file-contents file)
1195 (goto-char (point-min))
1196 (when (re-search-forward
1197 (concat "^" (regexp-quote group) " ") nil t)
1199 (setq oactive-max (read (current-buffer)) ;; max
1200 oactive-min (read (current-buffer)))) ;; min
1201 (gnus-delete-line)))
1202 (insert (format "%S %d %d y\n" (intern group)
1203 (max (or oactive-max (cdr active)) (cdr active))
1204 (min (or oactive-min (car active)) (car active))))
1205 (goto-char (point-max))
1206 (while (search-backward "\\." nil t)
1207 (delete-char 1))))))
1209 (defun gnus-agent-group-path (group)
1210 "Translate GROUP into a file name."
1212 ;; NOTE: This is what nnmail-group-pathname does as of Apr 2003.
1213 ;; The two methods must be kept synchronized, which is why
1214 ;; gnus-agent-group-pathname was added.
1217 (nnheader-translate-file-chars
1218 (nnheader-replace-duplicate-chars-in-string
1219 (nnheader-replace-chars-in-string
1220 (gnus-group-real-name group)
1223 (if (or nnmail-use-long-file-names
1224 (file-directory-p (expand-file-name group (gnus-agent-directory))))
1226 (mm-encode-coding-string
1227 (nnheader-replace-chars-in-string group ?. ?/)
1228 nnmail-pathname-coding-system)))
1230 (defun gnus-agent-group-pathname (group)
1231 "Translate GROUP into a file name."
1232 ;; nnagent uses nnmail-group-pathname to read articles while
1233 ;; unplugged. The agent must, therefore, use the same directory
1235 (let ((gnus-command-method (or gnus-command-method
1236 (gnus-find-method-for-group group))))
1237 (nnmail-group-pathname (gnus-group-real-name group) (gnus-agent-directory))))
1239 (defun gnus-agent-get-function (method)
1240 (if (gnus-online method)
1245 (defun gnus-agent-covered-methods ()
1246 "Return the subset of methods that are covered by the agent."
1247 (delq nil (mapcar #'gnus-server-to-method gnus-agent-covered-methods)))
1249 ;;; History functions
1251 (defun gnus-agent-history-buffer ()
1252 (cdr (assoc (gnus-agent-method) gnus-agent-history-buffers)))
1254 (defun gnus-agent-open-history ()
1256 (push (cons (gnus-agent-method)
1257 (set-buffer (gnus-get-buffer-create
1258 (format " *Gnus agent %s history*"
1259 (gnus-agent-method)))))
1260 gnus-agent-history-buffers)
1261 (mm-disable-multibyte) ;; everything is binary
1264 (let ((file (gnus-agent-lib-file "history")))
1265 (when (file-exists-p file)
1266 (nnheader-insert-file-contents file))
1267 (set (make-local-variable 'gnus-agent-file-name) file))))
1269 (defun gnus-agent-close-history ()
1270 (when (gnus-buffer-live-p gnus-agent-current-history)
1271 (kill-buffer gnus-agent-current-history)
1272 (setq gnus-agent-history-buffers
1273 (delq (assoc (gnus-agent-method) gnus-agent-history-buffers)
1274 gnus-agent-history-buffers))))
1280 (defun gnus-agent-fetch-articles (group articles)
1281 "Fetch ARTICLES from GROUP and put them into the Agent."
1283 (gnus-agent-load-alist group)
1284 (let* ((alist gnus-agent-article-alist)
1285 (headers (if (< (length articles) 2) nil gnus-newsgroup-headers))
1286 (selected-sets (list nil))
1287 (current-set-size 0)
1290 ;; Check each article
1291 (while (setq article (pop articles))
1292 ;; Skip alist entries preceeding this article
1293 (while (> article (or (caar alist) (1+ article)))
1294 (setq alist (cdr alist)))
1296 ;; Prune off articles that we have already fetched.
1297 (unless (and (eq article (caar alist))
1299 ;; Skip headers preceeding this article
1302 (let* ((header (car headers)))
1304 (mail-header-number header)
1306 (setq headers (cdr headers)))
1308 ;; Add this article to the current set
1309 (setcar selected-sets (cons article (car selected-sets)))
1311 ;; Update the set size, when the set is too large start a
1312 ;; new one. I do this after adding the article as I want at
1313 ;; least one article in each set.
1314 (when (< gnus-agent-max-fetch-size
1315 (setq current-set-size
1317 (if (= header-number article)
1318 (let ((char-size (mail-header-chars
1320 (if (<= char-size 0)
1321 ;; The char size was missing/invalid,
1322 ;; assume a worst-case situation of
1323 ;; 65 char/line. If the line count
1324 ;; is missing, arbitrarily assume a
1325 ;; size of 1000 characters.
1326 (max (* 65 (mail-header-lines
1331 (setcar selected-sets (nreverse (car selected-sets)))
1332 (setq selected-sets (cons nil selected-sets)
1333 current-set-size 0))))
1335 (when (or (cdr selected-sets) (car selected-sets))
1336 (let* ((fetched-articles (list nil))
1337 (tail-fetched-articles fetched-articles)
1338 (dir (gnus-agent-group-pathname group))
1339 (date (time-to-days (current-time)))
1340 (case-fold-search t)
1343 (setcar selected-sets (nreverse (car selected-sets)))
1344 (setq selected-sets (nreverse selected-sets))
1346 (gnus-make-directory dir)
1347 (gnus-message 7 "Fetching articles for %s..." group)
1350 (while (setq articles (pop selected-sets))
1351 ;; Fetch the articles from the backend.
1352 (if (gnus-check-backend-function 'retrieve-articles group)
1353 (setq pos (gnus-retrieve-articles articles group))
1356 (while (setq article (pop articles))
1357 (gnus-message 10 "Fetching article %s for %s..."
1360 (gnus-backlog-request-article group article
1362 (gnus-request-article article group))
1363 (goto-char (point-max))
1364 (push (cons article (point)) pos)
1365 (insert-buffer-substring nntp-server-buffer)))
1367 nntp-server-buffer (point-min) (point-max))
1368 (setq pos (nreverse pos)))))
1369 ;; Then save these articles into the Agent.
1371 (set-buffer nntp-server-buffer)
1373 (narrow-to-region (cdar pos) (or (cdadr pos) (point-max)))
1374 (goto-char (point-min))
1375 (unless (eobp) ;; Don't save empty articles.
1376 (when (search-forward "\n\n" nil t)
1377 (when (search-backward "\nXrefs: " nil t)
1378 ;; Handle cross posting.
1379 (goto-char (match-end 0)) ; move to end of header name
1380 (skip-chars-forward "^ ") ; skip server name
1381 (skip-chars-forward " ")
1383 (while (looking-at "\\([^: \n]+\\):\\([0-9]+\\) *")
1384 (push (cons (buffer-substring (match-beginning 1)
1387 (buffer-substring (match-beginning 2)
1390 (goto-char (match-end 0)))
1391 (gnus-agent-crosspost crosses (caar pos) date)))
1392 (goto-char (point-min))
1393 (if (not (re-search-forward
1394 "^Message-ID: *<\\([^>\n]+\\)>" nil t))
1395 (setq id "No-Message-ID-in-article")
1396 (setq id (buffer-substring
1397 (match-beginning 1) (match-end 1))))
1398 (let ((coding-system-for-write
1399 gnus-agent-file-coding-system))
1400 (write-region (point-min) (point-max)
1401 (concat dir (number-to-string (caar pos)))
1404 (gnus-agent-append-to-list
1405 tail-fetched-articles (caar pos)))
1407 (setq pos (cdr pos)))))
1409 (gnus-agent-save-alist group (cdr fetched-articles) date)
1410 (gnus-message 7 ""))
1411 (cdr fetched-articles))))))
1413 (defun gnus-agent-crosspost (crosses article &optional date)
1414 (setq date (or date t))
1416 (let (gnus-agent-article-alist group alist beg end)
1418 (set-buffer gnus-agent-overview-buffer)
1419 (when (nnheader-find-nov-line article)
1422 (setq end (progn (forward-line 1) (point)))))
1424 (setq group (caar crosses))
1425 (unless (setq alist (assoc group gnus-agent-group-alist))
1426 (push (setq alist (list group (gnus-agent-load-alist (caar crosses))))
1427 gnus-agent-group-alist))
1428 (setcdr alist (cons (cons (cdar crosses) date) (cdr alist)))
1430 (set-buffer (gnus-get-buffer-create (format " *Gnus agent overview %s*"
1432 (when (= (point-max) (point-min))
1433 (push (cons group (current-buffer)) gnus-agent-buffer-alist)
1435 (nnheader-insert-file-contents
1436 (gnus-agent-article-name ".overview" group))))
1437 (nnheader-find-nov-line (string-to-number (cdar crosses)))
1438 (insert (string-to-number (cdar crosses)))
1439 (insert-buffer-substring gnus-agent-overview-buffer beg end)
1440 (gnus-agent-check-overview-buffer))
1441 (setq crosses (cdr crosses)))))
1443 (defun gnus-agent-backup-overview-buffer ()
1444 (when gnus-newsgroup-name
1445 (let ((root (gnus-agent-article-name ".overview" gnus-newsgroup-name))
1448 (while (file-exists-p
1449 (setq name (concat root "~"
1450 (int-to-string (setq cnt (1+ cnt))) "~"))))
1451 (write-region (point-min) (point-max) name nil 'no-msg)
1452 (gnus-message 1 "Created backup copy of overview in %s." name)))
1455 (defun gnus-agent-check-overview-buffer (&optional buffer)
1456 "Check the overview file given for sanity.
1457 In particular, checks that the file is sorted by article number
1458 and that there are no duplicates."
1463 (set-buffer buffer))
1466 (goto-char (point-min))
1468 (while (< (point) (point-max))
1470 (cur (condition-case nil
1471 (read (current-buffer))
1474 ((or (not (integerp cur))
1475 (not (eq (char-after) ?\t)))
1477 (setq backed-up (gnus-agent-backup-overview-buffer)))
1479 "Overview buffer contains garbage '%s'."
1484 (setq backed-up (gnus-agent-backup-overview-buffer)))
1486 "Duplicate overview line for %d" cur)
1487 (delete-region (point) (progn (forward-line 1) (point))))
1490 (setq backed-up (gnus-agent-backup-overview-buffer)))
1491 (gnus-message 1 "Overview buffer not sorted!")
1492 (sort-numeric-fields 1 (point-min) (point-max))
1493 (goto-char (point-min))
1496 (setq prev-num cur)))
1497 (forward-line 1)))))))
1499 (defun gnus-agent-flush-cache ()
1501 (while gnus-agent-buffer-alist
1502 (set-buffer (cdar gnus-agent-buffer-alist))
1503 (let ((coding-system-for-write
1504 gnus-agent-file-coding-system))
1505 (write-region (point-min) (point-max)
1506 (gnus-agent-article-name ".overview"
1507 (caar gnus-agent-buffer-alist))
1509 (setq gnus-agent-buffer-alist (cdr gnus-agent-buffer-alist)))
1510 (while gnus-agent-group-alist
1511 (with-temp-file (gnus-agent-article-name
1512 ".agentview" (caar gnus-agent-group-alist))
1513 (princ (cdar gnus-agent-group-alist))
1515 (princ 1 (current-buffer))
1517 (setq gnus-agent-group-alist (cdr gnus-agent-group-alist)))))
1519 (defun gnus-agent-find-parameter (group symbol)
1520 "Search for GROUPs SYMBOL in the group's parameters, the group's
1521 topic parameters, the group's category, or the customizable
1522 variables. Returns the first non-nil value found."
1523 (or (gnus-group-find-parameter group symbol t)
1524 (gnus-group-parameter-value (cdr (gnus-group-category group)) symbol t)
1528 '((agent-short-article . gnus-agent-short-article)
1529 (agent-long-article . gnus-agent-long-article)
1530 (agent-low-score . gnus-agent-low-score)
1531 (agent-high-score . gnus-agent-high-score)
1532 (agent-days-until-old . gnus-agent-expire-days)
1533 (agent-enable-expiration
1534 . gnus-agent-enable-expiration)
1535 (agent-predicate . gnus-agent-predicate)))))))
1537 (defun gnus-agent-fetch-headers (group &optional force)
1538 "Fetch interesting headers into the agent. The group's overview
1539 file will be updated to include the headers while a list of available
1540 article numbers will be returned."
1541 (let* ((fetch-all (and gnus-agent-consider-all-articles
1542 ;; Do not fetch all headers if the predicate
1543 ;; implies that we only consider unread articles.
1544 (not (gnus-predicate-implies-unread
1545 (gnus-agent-find-parameter group
1546 'agent-predicate)))))
1547 (articles (if fetch-all
1548 (gnus-uncompress-range (gnus-active group))
1549 (gnus-list-of-unread-articles group)))
1550 (gnus-decode-encoded-word-function 'identity)
1551 (file (gnus-agent-article-name ".overview" group)))
1554 ;; Add articles with marks to the list of article headers we want to
1555 ;; fetch. Don't fetch articles solely on the basis of a recent or seen
1556 ;; mark, but do fetch recent or seen articles if they have other, more
1557 ;; interesting marks. (We have to fetch articles with boring marks
1558 ;; because otherwise the agent will remove their marks.)
1559 (dolist (arts (gnus-info-marks (gnus-get-info group)))
1560 (unless (memq (car arts) '(seen recent killed cache))
1561 (setq articles (gnus-range-add articles (cdr arts)))))
1562 (setq articles (sort (gnus-uncompress-sequence articles) '<)))
1564 ;; At this point, I have the list of articles to consider for
1565 ;; fetching. This is the list that I'll return to my caller. Some
1566 ;; of these articles may have already been fetched. That's OK as
1567 ;; the fetch article code will filter those out. Internally, I'll
1568 ;; filter this list to just those articles whose headers need to
1570 (let ((articles articles))
1571 ;; Remove known articles.
1572 (when (and (or gnus-agent-cache
1574 (gnus-agent-load-alist group))
1575 ;; Remove articles marked as downloaded.
1577 ;; I want to fetch all headers in the active range.
1578 ;; Therefore, exclude only those headers that are in the
1580 ;; NOTE: This is probably NOT what I want to do after
1581 ;; agent expiration in this group.
1582 (setq articles (gnus-agent-uncached-articles articles group))
1584 ;; I want to only fetch those headers that have never been
1585 ;; fetched. Therefore, exclude all headers that are, or
1586 ;; WERE, in the article alist.
1587 (let ((low (1+ (caar (last gnus-agent-article-alist))))
1588 (high (cdr (gnus-active group))))
1589 ;; Low can be greater than High when the same group is
1590 ;; fetched twice in the same session {The first fetch will
1591 ;; fill the article alist such that (last
1592 ;; gnus-agent-article-alist) equals (cdr (gnus-active
1593 ;; group))}. The addition of one(the 1+ above) then
1594 ;; forces Low to be greater than High. When this happens,
1595 ;; gnus-list-range-intersection returns nil which
1596 ;; indicates that no headers need to be fetched. -- Kevin
1597 (setq articles (gnus-list-range-intersection
1598 articles (list (cons low high)))))))
1601 10 "gnus-agent-fetch-headers: undownloaded articles are '%s'"
1602 (gnus-compress-sequence articles t))
1605 (set-buffer nntp-server-buffer)
1609 (gnus-message 7 "Fetching headers for %s..." group)
1612 (gnus-make-directory (nnheader-translate-file-chars
1613 (file-name-directory file) t))
1615 (unless (eq 'nov (gnus-retrieve-headers articles group))
1616 (nnvirtual-convert-headers))
1617 (gnus-agent-check-overview-buffer)
1618 ;; Move these headers to the overview buffer so that
1619 ;; gnus-agent-braid-nov can merge them with the contents
1622 gnus-agent-overview-buffer (point-min) (point-max))
1623 (when (file-exists-p file)
1624 (gnus-agent-braid-nov group articles file))
1625 (let ((coding-system-for-write
1626 gnus-agent-file-coding-system))
1627 (gnus-agent-check-overview-buffer)
1628 (write-region (point-min) (point-max) file nil 'silent))
1629 (gnus-agent-save-alist group articles nil)
1633 (nnheader-insert-file-contents file)))))
1636 (defsubst gnus-agent-copy-nov-line (article)
1638 (set-buffer gnus-agent-overview-buffer)
1639 (while (and (not (eobp))
1640 (< (setq art (read (current-buffer))) article))
1644 (not (eq article art)))
1645 (set-buffer nntp-server-buffer)
1647 (setq e (progn (forward-line 1) (point)))
1648 (set-buffer nntp-server-buffer)
1649 (insert-buffer-substring gnus-agent-overview-buffer b e))))
1651 (defun gnus-agent-braid-nov (group articles file)
1652 "Merge agent overview data with given file.
1653 Takes headers for ARTICLES from `gnus-agent-overview-buffer' and the given
1654 FILE and places the combined headers into `nntp-server-buffer'."
1656 (set-buffer gnus-agent-overview-buffer)
1657 (goto-char (point-min))
1658 (set-buffer nntp-server-buffer)
1660 (nnheader-insert-file-contents file)
1661 (goto-char (point-max))
1663 (unless (looking-at "[0-9]+\t")
1664 ;; Remove corrupted lines
1666 1 "Overview %s is corrupted. Removing corrupted lines..." file)
1667 (goto-char (point-min))
1669 (if (looking-at "[0-9]+\t")
1671 (delete-region (point) (progn (forward-line 1) (point)))))
1673 (unless (or (= (point-min) (point-max))
1674 (< (setq last (read (current-buffer))) (car articles)))
1675 ;; We do it the hard way.
1676 (when (nnheader-find-nov-line (car articles))
1677 ;; Replacing existing NOV entry
1678 (delete-region (point) (progn (forward-line 1) (point))))
1679 (gnus-agent-copy-nov-line (pop articles))
1683 (while (let ((art (read (current-buffer))))
1684 (cond ((< art (car articles))
1687 ((= art (car articles))
1690 (point) (progn (forward-line 1) (point)))
1696 (gnus-agent-copy-nov-line (pop articles)))))
1698 ;; Copy the rest lines
1699 (set-buffer nntp-server-buffer)
1700 (goto-char (point-max))
1703 (set-buffer gnus-agent-overview-buffer)
1705 (while (<= (read (current-buffer)) last)
1708 (setq start (point))
1709 (set-buffer nntp-server-buffer))
1710 (insert-buffer-substring gnus-agent-overview-buffer start))))
1712 ;; Keeps the compiler from warning about the free variable in
1713 ;; gnus-agent-read-agentview.
1715 (defvar gnus-agent-read-agentview))
1717 (defun gnus-agent-load-alist (group)
1718 "Load the article-state alist for GROUP."
1719 ;; Bind free variable that's used in `gnus-agent-read-agentview'.
1720 (let ((gnus-agent-read-agentview group))
1721 (setq gnus-agent-article-alist
1722 (gnus-cache-file-contents
1723 (gnus-agent-article-name ".agentview" group)
1724 'gnus-agent-file-loading-cache
1725 'gnus-agent-read-agentview))))
1727 ;; Save format may be either 1 or 2. Two is the new, compressed
1728 ;; format that is still being tested. Format 1 is uncompressed but
1729 ;; known to be reliable.
1730 (defconst gnus-agent-article-alist-save-format 2)
1732 (defun gnus-agent-read-agentview (file)
1733 "Load FILE and do a `read' there."
1736 (nnheader-insert-file-contents file)
1737 (goto-char (point-min))
1738 (let ((alist (read (current-buffer)))
1739 (version (condition-case nil (read (current-buffer))
1745 (let ((inhibit-quit t)
1747 (gnus-agent-open-history)
1748 (set-buffer (gnus-agent-history-buffer))
1749 (goto-char (point-min))
1751 (if (and (looking-at
1752 "[^\t\n]+\t\\([0-9]+\\)\t\\([^ \n]+\\) \\([0-9]+\\)")
1753 (string= (match-string 2)
1754 gnus-agent-read-agentview)
1755 (setq entry (assoc (string-to-number (match-string 3)) alist)))
1756 (setcdr entry (string-to-number (match-string 1))))
1758 (gnus-agent-close-history)
1759 (setq changed-version t)))
1761 (setq changed-version (not (= 1 gnus-agent-article-alist-save-format))))
1766 (let ((state (car comp-list))
1767 (sequence (gnus-uncompress-sequence
1769 (mapcar (lambda (article-id)
1770 (setq uncomp (cons (cons article-id state) uncomp)))
1773 (setq alist (sort uncomp 'car-less-than-car)))))
1774 (when changed-version
1775 (let ((gnus-agent-article-alist alist))
1776 (gnus-agent-save-alist gnus-agent-read-agentview)))
1779 (defun gnus-agent-save-alist (group &optional articles state)
1780 "Save the article-state alist for GROUP."
1781 (let* ((file-name-coding-system nnmail-pathname-coding-system)
1782 (prev (cons nil gnus-agent-article-alist))
1784 print-level print-length item article)
1785 (while (setq article (pop articles))
1786 (while (and (cdr prev)
1787 (< (caadr prev) article))
1788 (setq prev (cdr prev)))
1791 (setcdr prev (list (cons article state))))
1792 ((> (caadr prev) article)
1793 (setcdr prev (cons (cons article state) (cdr prev))))
1794 ((= (caadr prev) article)
1795 (setcdr (cadr prev) state)))
1796 (setq prev (cdr prev)))
1797 (setq gnus-agent-article-alist (cdr all))
1799 (gnus-agent-set-local group
1800 (caar gnus-agent-article-alist)
1801 (caar (last gnus-agent-article-alist)))
1803 (gnus-make-directory (gnus-agent-article-name "" group))
1804 (with-temp-file (gnus-agent-article-name ".agentview" group)
1805 (cond ((eq gnus-agent-article-alist-save-format 1)
1806 (princ gnus-agent-article-alist (current-buffer)))
1807 ((eq gnus-agent-article-alist-save-format 2)
1808 (let ((compressed nil))
1809 (mapcar (lambda (pair)
1810 (let* ((article-id (car pair))
1811 (day-of-download (cdr pair))
1812 (comp-list (assq day-of-download compressed)))
1815 (cons article-id (cdr comp-list)))
1817 (cons (list day-of-download article-id)
1819 nil)) gnus-agent-article-alist)
1820 (mapcar (lambda (comp-list)
1822 (gnus-compress-sequence
1823 (nreverse (cdr comp-list)))))
1825 (princ compressed (current-buffer)))))
1827 (princ gnus-agent-article-alist-save-format (current-buffer))
1830 (defvar gnus-agent-article-local nil)
1831 (defvar gnus-agent-file-loading-local nil)
1833 (defun gnus-agent-load-local (&optional method)
1834 "Load the METHOD'S local file. The local file contains min/max
1835 article counts for each of the method's subscribed groups."
1836 (let ((gnus-command-method (or method gnus-command-method)))
1837 (setq gnus-agent-article-local
1838 (gnus-cache-file-contents
1839 (gnus-agent-lib-file "local")
1840 'gnus-agent-file-loading-local
1841 'gnus-agent-read-and-cache-local))))
1843 (defun gnus-agent-read-and-cache-local (file)
1844 "Load and read FILE then bind its contents to
1845 gnus-agent-article-local. If that variable had `dirty' (also known as
1846 modified) original contents, they are first saved to their own file."
1848 (if (and gnus-agent-article-local
1849 (symbol-value (intern "+dirty" gnus-agent-article-local)))
1850 (gnus-agent-save-local))
1851 (gnus-agent-read-local file))
1853 (defun gnus-agent-read-local (file)
1854 "Load FILE and do a `read' there."
1855 (let ((obarray (gnus-make-hashtable (count-lines (point-min) (point-max))))
1859 (nnheader-insert-file-contents file)
1862 (goto-char (point-min))
1863 ;; Skip any comments at the beginning of the file (the only place where they may appear)
1864 (while (= (following-char) ?\;)
1866 (setq line (1+ line)))
1873 (cur (current-buffer)))
1874 (setq group (read cur)
1878 (when (stringp group)
1879 (setq group (intern group obarray)))
1881 ;; NOTE: The '+ 0' ensure that min and max are both numerics.
1882 (set group (cons (+ 0 min) (+ 0 max))))
1884 (gnus-message 3 "Warning - invalid agent local: %s on line %d: " file line (error-message-string err))))
1886 (setq line (1+ line))))
1888 (set (intern "+dirty" obarray) nil)
1889 (set (intern "+method" obarray) gnus-command-method)
1892 (defun gnus-agent-save-local (&optional force)
1893 "Save gnus-agent-article-local under it method's agent.lib directory."
1894 (let ((obarray gnus-agent-article-local))
1896 (or force (symbol-value (intern "+dirty" obarray))))
1897 (let* ((gnus-command-method (symbol-value (intern "+method" obarray)))
1898 ;; NOTE: gnus-command-method is used within gnus-agent-lib-file.
1899 (dest (gnus-agent-lib-file "local")))
1900 (gnus-make-directory (gnus-agent-lib-file ""))
1901 (with-temp-file dest
1902 (let ((gnus-command-method (symbol-value (intern "+method" obarray)))
1903 (file-name-coding-system nnmail-pathname-coding-system)
1904 (coding-system-for-write
1905 gnus-agent-file-coding-system)
1906 print-level print-length item article
1907 (standard-output (current-buffer)))
1908 (mapatoms (lambda (symbol)
1909 (cond ((not (boundp symbol))
1911 ((member (symbol-name symbol) '("+dirty" "+method"))
1915 (let ((range (symbol-value symbol)))
1920 (princ "\n"))))))))))))
1922 (defun gnus-agent-get-local (group)
1923 (let* ((gmane (gnus-group-real-name group))
1924 (gnus-command-method (gnus-find-method-for-group group))
1925 (local (gnus-agent-load-local))
1926 (symb (intern gmane local))
1927 (minmax (and (boundp symb) (symbol-value symb))))
1929 ;; Bind these so that gnus-agent-load-alist doesn't change the
1930 ;; current alist (i.e. gnus-agent-article-alist)
1931 (let* ((gnus-agent-article-alist gnus-agent-article-alist)
1932 (gnus-agent-file-loading-cache gnus-agent-file-loading-cache)
1933 (alist (gnus-agent-load-alist group)))
1937 (caar (last alist))))
1938 (gnus-agent-set-local group (car minmax) (cdr minmax)
1939 gmane gnus-command-method local))))
1942 (defun gnus-agent-set-local (group min max &optional gmane method local)
1943 (let* ((gmane (or gmane (gnus-group-real-name group)))
1944 (gnus-command-method (or method (gnus-find-method-for-group group)))
1945 (local (or local (gnus-agent-load-local)))
1946 (symb (intern gmane local))
1947 (minmax (and (boundp symb) (symbol-value symb))))
1949 (if (cond ((and minmax
1950 (or (not (eq min (car minmax)))
1951 (not (eq max (cdr minmax)))))
1958 (set symb (cons min max))
1960 (set (intern "+dirty" local) t))))
1962 (defun gnus-agent-article-name (article group)
1963 (expand-file-name article
1964 (file-name-as-directory
1965 (gnus-agent-group-pathname group))))
1967 (defun gnus-agent-batch-confirmation (msg)
1968 "Show error message and return t."
1969 (gnus-message 1 msg)
1973 (defun gnus-agent-batch-fetch ()
1974 "Start Gnus and fetch session."
1977 (let ((gnus-agent-confirmation-function 'gnus-agent-batch-confirmation))
1978 (gnus-agent-fetch-session))
1981 (defun gnus-agent-fetch-session ()
1982 "Fetch all articles and headers that are eligible for fetching."
1984 (unless gnus-agent-covered-methods
1985 (error "No servers are covered by the Gnus agent"))
1986 (unless gnus-plugged
1987 (error "Can't fetch articles while Gnus is unplugged"))
1988 (let ((methods (gnus-agent-covered-methods))
1989 groups group gnus-command-method)
1992 (setq gnus-command-method (car methods))
1993 (when (and (or (gnus-server-opened gnus-command-method)
1994 (gnus-open-server gnus-command-method))
1995 (gnus-online gnus-command-method))
1996 (setq groups (gnus-groups-from-server (car methods)))
1997 (gnus-agent-with-fetch
1998 (while (setq group (pop groups))
1999 (when (<= (gnus-group-level group)
2000 gnus-agent-handle-level)
2001 (if (or debug-on-error debug-on-quit)
2002 (gnus-agent-fetch-group-1
2003 group gnus-command-method)
2005 (gnus-agent-fetch-group-1
2006 group gnus-command-method)
2008 (unless (funcall gnus-agent-confirmation-function
2009 (format "Error %s. Continue? "
2010 (error-message-string err)))
2011 (error "Cannot fetch articles into the Gnus agent")))
2013 (unless (funcall gnus-agent-confirmation-function
2015 "Quit fetching session %s. Continue? "
2016 (error-message-string err)))
2018 "Cannot fetch articles into the Gnus agent")))))))))
2019 (setq methods (cdr methods)))
2020 (gnus-run-hooks 'gnus-agent-fetched-hook)
2021 (gnus-message 6 "Finished fetching articles into the Gnus agent"))))
2023 (defun gnus-agent-fetch-group-1 (group method)
2025 (let ((gnus-command-method method)
2026 (gnus-newsgroup-name group)
2027 (gnus-newsgroup-dependencies gnus-newsgroup-dependencies)
2028 (gnus-newsgroup-headers gnus-newsgroup-headers)
2029 (gnus-newsgroup-scored gnus-newsgroup-scored)
2030 (gnus-use-cache gnus-use-cache)
2031 (gnus-summary-expunge-below gnus-summary-expunge-below)
2032 (gnus-summary-mark-below gnus-summary-mark-below)
2033 (gnus-orphan-score gnus-orphan-score)
2034 ;; Maybe some other gnus-summary local variables should also
2040 category predicate info marks score-param
2042 (unless (gnus-check-group group)
2043 (error "Can't open server for %s" group))
2046 (when (or gnus-newsgroup-active
2048 (gnus-activate-group group))
2049 (let ((marked-articles gnus-newsgroup-downloadable))
2050 ;; Identify the articles marked for download
2051 (unless gnus-newsgroup-active
2052 ;; The variable gnus-newsgroup-active was selected as I need
2053 ;; a gnus-summary local variable that is NOT bound to any
2054 ;; value (its global value should default to nil).
2055 (dolist (mark gnus-agent-download-marks)
2056 (let ((arts (cdr (assq mark (gnus-info-marks
2057 (setq info (gnus-get-info group)))))))
2059 (setq marked-articles (nconc (gnus-uncompress-range arts)
2062 (setq marked-articles (sort marked-articles '<))
2064 ;; Fetch any new articles from the server
2065 (setq articles (gnus-agent-fetch-headers group))
2067 ;; Merge new articles with marked
2068 (setq articles (sort (append marked-articles articles) '<))
2071 ;; Parse them and see which articles we want to fetch.
2072 (setq gnus-newsgroup-dependencies
2073 (or gnus-newsgroup-dependencies
2074 (make-vector (length articles) 0)))
2075 (setq gnus-newsgroup-headers
2076 (or gnus-newsgroup-headers
2077 (gnus-get-newsgroup-headers-xover articles nil nil
2079 ;; `gnus-agent-overview-buffer' may be killed for
2080 ;; timeout reason. If so, recreate it.
2081 (gnus-agent-create-buffer)
2083 ;; Figure out how to select articles in this group
2084 (setq category (gnus-group-category group))
2088 (gnus-agent-find-parameter group 'agent-predicate)))
2090 ;; If the selection predicate requires scoring, score each header
2091 (unless (memq predicate '(gnus-agent-true gnus-agent-false))
2093 (gnus-agent-find-parameter group 'agent-score-file)))
2094 ;; Translate score-param into real one
2097 ((eq score-param 'file)
2098 (setq score-param (gnus-all-score-files group)))
2099 ((stringp (car score-param)))
2101 (setq score-param (list (list score-param)))))
2103 (gnus-score-headers score-param))))
2105 (unless (and (eq predicate 'gnus-agent-false)
2106 (not marked-articles))
2107 (let ((arts (list nil)))
2108 (let ((arts-tail arts)
2109 (alist (gnus-agent-load-alist group))
2110 (marked-articles marked-articles)
2111 (gnus-newsgroup-headers gnus-newsgroup-headers))
2112 (while (setq gnus-headers (pop gnus-newsgroup-headers))
2113 (let ((num (mail-header-number gnus-headers)))
2114 ;; Determine if this article is already in the cache
2116 (> num (caar alist)))
2117 (setq alist (cdr alist)))
2119 (unless (and (eq num (caar alist))
2122 ;; Determine if this article was marked for download.
2123 (while (and marked-articles
2124 (> num (car marked-articles)))
2125 (setq marked-articles
2126 (cdr marked-articles)))
2128 ;; When this article is marked, or selected by the
2129 ;; predicate, add it to the download list
2130 (when (or (eq num (car marked-articles))
2133 (assq num gnus-newsgroup-scored))
2134 gnus-summary-default-score))
2135 (gnus-agent-long-article
2136 (gnus-agent-find-parameter
2137 group 'agent-long-article))
2138 (gnus-agent-short-article
2139 (gnus-agent-find-parameter
2140 group 'agent-short-article))
2141 (gnus-agent-low-score
2142 (gnus-agent-find-parameter
2143 group 'agent-low-score))
2144 (gnus-agent-high-score
2145 (gnus-agent-find-parameter
2146 group 'agent-high-score))
2147 (gnus-agent-expire-days
2148 (gnus-agent-find-parameter
2149 group 'agent-days-until-old)))
2150 (funcall predicate)))
2151 (gnus-agent-append-to-list arts-tail num))))))
2153 (let (fetched-articles)
2154 ;; Fetch all selected articles
2155 (setq gnus-newsgroup-undownloaded
2156 (gnus-sorted-ndifference
2157 gnus-newsgroup-undownloaded
2158 (setq fetched-articles
2160 (gnus-agent-fetch-articles group (cdr arts))
2163 (let ((unfetched-articles
2164 (gnus-sorted-ndifference (cdr arts) fetched-articles)))
2165 (if gnus-newsgroup-active
2166 ;; Update the summary buffer
2168 (dolist (article marked-articles)
2169 (gnus-summary-set-agent-mark article t))
2170 (dolist (article fetched-articles)
2171 (if gnus-agent-mark-unread-after-downloaded
2172 (gnus-summary-mark-article
2173 article gnus-unread-mark))
2174 (when (gnus-summary-goto-subject article nil t)
2175 (gnus-summary-update-download-mark article)))
2176 (dolist (article unfetched-articles)
2177 (gnus-summary-mark-article
2178 article gnus-canceled-mark)))
2180 ;; Update the group buffer.
2182 ;; When some, or all, of the marked articles came
2183 ;; from the download mark. Remove that mark. I
2184 ;; didn't do this earlier as I only want to remove
2185 ;; the marks after the fetch is completed.
2187 (dolist (mark gnus-agent-download-marks)
2188 (when (eq mark 'download)
2190 (assq mark (gnus-info-marks
2191 (setq info (gnus-get-info group))))))
2192 (when (cdr marked-arts)
2194 (delq marked-arts (gnus-info-marks info)))
2195 (gnus-info-set-marks info marks)))))
2196 (let ((read (gnus-info-read
2197 (or info (setq info (gnus-get-info group))))))
2199 info (gnus-add-to-range read unfetched-articles)))
2201 (gnus-group-update-group group t)
2205 (concat "(gnus-group-set-info '"
2206 (gnus-prin1-to-string info)
2210 ;;; Agent Category Mode
2213 (defvar gnus-category-mode-hook nil
2214 "Hook run in `gnus-category-mode' buffers.")
2216 (defvar gnus-category-line-format " %(%20c%): %g\n"
2217 "Format of category lines.
2219 Valid specifiers include:
2220 %c Topic name (string)
2221 %g The number of groups in the topic (integer)
2223 General format specifiers can also be used. See Info node
2224 `(gnus)Formatting Variables'.")
2226 (defvar gnus-category-mode-line-format "Gnus: %%b"
2227 "The format specification for the category mode line.")
2229 (defvar gnus-agent-predicate 'false
2230 "The selection predicate used when no other source is available.")
2232 (defvar gnus-agent-short-article 100
2233 "Articles that have fewer lines than this are short.")
2235 (defvar gnus-agent-long-article 200
2236 "Articles that have more lines than this are long.")
2238 (defvar gnus-agent-low-score 0
2239 "Articles that have a score lower than this have a low score.")
2241 (defvar gnus-agent-high-score 0
2242 "Articles that have a score higher than this have a high score.")
2245 ;;; Internal variables.
2247 (defvar gnus-category-buffer "*Agent Category*")
2249 (defvar gnus-category-line-format-alist
2250 `((?c gnus-tmp-name ?s)
2251 (?g gnus-tmp-groups ?d)))
2253 (defvar gnus-category-mode-line-format-alist
2254 `((?u user-defined ?s)))
2256 (defvar gnus-category-line-format-spec nil)
2257 (defvar gnus-category-mode-line-format-spec nil)
2259 (defvar gnus-category-mode-map nil)
2260 (put 'gnus-category-mode 'mode-class 'special)
2262 (unless gnus-category-mode-map
2263 (setq gnus-category-mode-map (make-sparse-keymap))
2264 (suppress-keymap gnus-category-mode-map)
2266 (gnus-define-keys gnus-category-mode-map
2267 "q" gnus-category-exit
2268 "k" gnus-category-kill
2269 "c" gnus-category-copy
2270 "a" gnus-category-add
2271 "e" gnus-agent-customize-category
2272 "p" gnus-category-edit-predicate
2273 "g" gnus-category-edit-groups
2274 "s" gnus-category-edit-score
2275 "l" gnus-category-list
2277 "\C-c\C-i" gnus-info-find-node
2278 "\C-c\C-b" gnus-bug))
2280 (defvar gnus-category-menu-hook nil
2281 "*Hook run after the creation of the menu.")
2283 (defun gnus-category-make-menu-bar ()
2284 (gnus-turn-off-edit-menu 'category)
2285 (unless (boundp 'gnus-category-menu)
2287 gnus-category-menu gnus-category-mode-map ""
2289 ["Add" gnus-category-add t]
2290 ["Kill" gnus-category-kill t]
2291 ["Copy" gnus-category-copy t]
2292 ["Edit category" gnus-agent-customize-category t]
2293 ["Edit predicate" gnus-category-edit-predicate t]
2294 ["Edit score" gnus-category-edit-score t]
2295 ["Edit groups" gnus-category-edit-groups t]
2296 ["Exit" gnus-category-exit t]))
2298 (gnus-run-hooks 'gnus-category-menu-hook)))
2300 (defun gnus-category-mode ()
2301 "Major mode for listing and editing agent categories.
2303 All normal editing commands are switched off.
2304 \\<gnus-category-mode-map>
2305 For more in-depth information on this mode, read the manual
2306 \(`\\[gnus-info-find-node]').
2308 The following commands are available:
2310 \\{gnus-category-mode-map}"
2312 (when (gnus-visual-p 'category-menu 'menu)
2313 (gnus-category-make-menu-bar))
2314 (kill-all-local-variables)
2315 (gnus-simplify-mode-line)
2316 (setq major-mode 'gnus-category-mode)
2317 (setq mode-name "Category")
2318 (gnus-set-default-directory)
2319 (setq mode-line-process nil)
2320 (use-local-map gnus-category-mode-map)
2321 (buffer-disable-undo)
2322 (setq truncate-lines t)
2323 (setq buffer-read-only t)
2324 (gnus-run-hooks 'gnus-category-mode-hook))
2326 (defalias 'gnus-category-position-point 'gnus-goto-colon)
2328 (defun gnus-category-insert-line (category)
2329 (let* ((gnus-tmp-name (format "%s" (car category)))
2330 (gnus-tmp-groups (length (gnus-agent-cat-groups category))))
2332 (gnus-add-text-properties
2336 (eval gnus-category-line-format-spec))
2337 (list 'gnus-category gnus-tmp-name))))
2339 (defun gnus-enter-category-buffer ()
2340 "Go to the Category buffer."
2342 (gnus-category-setup-buffer)
2343 (gnus-configure-windows 'category)
2344 (gnus-category-prepare))
2346 (defun gnus-category-setup-buffer ()
2347 (unless (get-buffer gnus-category-buffer)
2349 (set-buffer (gnus-get-buffer-create gnus-category-buffer))
2350 (gnus-category-mode))))
2352 (defun gnus-category-prepare ()
2353 (gnus-set-format 'category-mode)
2354 (gnus-set-format 'category t)
2355 (let ((alist gnus-category-alist)
2356 (buffer-read-only nil))
2359 (gnus-category-insert-line (pop alist)))
2360 (goto-char (point-min))
2361 (gnus-category-position-point)))
2363 (defun gnus-category-name ()
2364 (or (intern (get-text-property (point-at-bol) 'gnus-category))
2365 (error "No category on the current line")))
2367 (defun gnus-category-read ()
2368 "Read the category alist."
2369 (setq gnus-category-alist
2373 (nnheader-insert-file-contents (nnheader-concat gnus-agent-directory "lib/categories"))
2374 (goto-char (point-min))
2375 ;; This code isn't temp, it will be needed so long as
2376 ;; anyone may be migrating from an older version.
2378 ;; Once we're certain that people will not revert to an
2379 ;; earlier version, we can take out the old-list code in
2380 ;; gnus-category-write.
2381 (let* ((old-list (read (current-buffer)))
2382 (new-list (ignore-errors (read (current-buffer)))))
2385 ;; Convert from a positional list to an alist.
2395 '(agent-predicate agent-score-file agent-groups))))
2398 (list (gnus-agent-cat-make 'default 'short)))))
2400 (defun gnus-category-write ()
2401 "Write the category alist."
2402 (setq gnus-category-predicate-cache nil
2403 gnus-category-group-cache nil)
2404 (gnus-make-directory (nnheader-concat gnus-agent-directory "lib"))
2405 (with-temp-file (nnheader-concat gnus-agent-directory "lib/categories")
2406 ;; This prin1 is temporary. It exists so that people can revert
2407 ;; to an earlier version of gnus-agent.
2408 (prin1 (mapcar (lambda (c)
2410 (cdr (assoc 'agent-predicate c))
2411 (cdr (assoc 'agent-score-file c))
2412 (cdr (assoc 'agent-groups c))))
2413 gnus-category-alist)
2416 (prin1 gnus-category-alist (current-buffer))))
2418 (defun gnus-category-edit-predicate (category)
2419 "Edit the predicate for CATEGORY."
2420 (interactive (list (gnus-category-name)))
2421 (let ((info (assq category gnus-category-alist)))
2423 (gnus-agent-cat-predicate info)
2424 (format "Editing the select predicate for category %s" category)
2425 `(lambda (predicate)
2426 ;; Avoid run-time execution of setf form
2427 ;; (setf (gnus-agent-cat-predicate (assq ',category gnus-category-alist))
2429 ;; use its expansion instead:
2430 (gnus-agent-cat-set-property (assq ',category gnus-category-alist)
2431 'agent-predicate predicate)
2433 (gnus-category-write)
2434 (gnus-category-list)))))
2436 (defun gnus-category-edit-score (category)
2437 "Edit the score expression for CATEGORY."
2438 (interactive (list (gnus-category-name)))
2439 (let ((info (assq category gnus-category-alist)))
2441 (gnus-agent-cat-score-file info)
2442 (format "Editing the score expression for category %s" category)
2443 `(lambda (score-file)
2444 ;; Avoid run-time execution of setf form
2445 ;; (setf (gnus-agent-cat-score-file (assq ',category gnus-category-alist))
2447 ;; use its expansion instead:
2448 (gnus-agent-cat-set-property (assq ',category gnus-category-alist)
2449 'agent-score-file score-file)
2451 (gnus-category-write)
2452 (gnus-category-list)))))
2454 (defun gnus-category-edit-groups (category)
2455 "Edit the group list for CATEGORY."
2456 (interactive (list (gnus-category-name)))
2457 (let ((info (assq category gnus-category-alist)))
2459 (gnus-agent-cat-groups info)
2460 (format "Editing the group list for category %s" category)
2462 ;; Avoid run-time execution of setf form
2463 ;; (setf (gnus-agent-cat-groups (assq ',category gnus-category-alist))
2465 ;; use its expansion instead:
2466 (gnus-agent-set-cat-groups (assq ',category gnus-category-alist)
2469 (gnus-category-write)
2470 (gnus-category-list)))))
2472 (defun gnus-category-kill (category)
2473 "Kill the current category."
2474 (interactive (list (gnus-category-name)))
2475 (let ((info (assq category gnus-category-alist))
2476 (buffer-read-only nil))
2478 (setq gnus-category-alist (delq info gnus-category-alist))
2479 (gnus-category-write)))
2481 (defun gnus-category-copy (category to)
2482 "Copy the current category."
2483 (interactive (list (gnus-category-name) (intern (read-string "New name: "))))
2484 (let ((info (assq category gnus-category-alist)))
2485 (push (let ((newcat (gnus-copy-sequence info)))
2486 (setf (gnus-agent-cat-name newcat) to)
2487 (setf (gnus-agent-cat-groups newcat) nil)
2489 gnus-category-alist)
2490 (gnus-category-write)
2491 (gnus-category-list)))
2493 (defun gnus-category-add (category)
2494 "Create a new category."
2495 (interactive "SCategory name: ")
2496 (when (assq category gnus-category-alist)
2497 (error "Category %s already exists" category))
2498 (push (gnus-agent-cat-make category)
2499 gnus-category-alist)
2500 (gnus-category-write)
2501 (gnus-category-list))
2503 (defun gnus-category-list ()
2504 "List all categories."
2506 (gnus-category-prepare))
2508 (defun gnus-category-exit ()
2509 "Return to the group buffer."
2511 (kill-buffer (current-buffer))
2512 (gnus-configure-windows 'group t))
2514 ;; To avoid having 8-bit characters in the source file.
2515 (defvar gnus-category-not (list '! 'not (intern (format "%c" 172))))
2517 (defvar gnus-category-predicate-alist
2518 '((spam . gnus-agent-spam-p)
2519 (short . gnus-agent-short-p)
2520 (long . gnus-agent-long-p)
2521 (low . gnus-agent-low-scored-p)
2522 (high . gnus-agent-high-scored-p)
2523 (read . gnus-agent-read-p)
2524 (true . gnus-agent-true)
2525 (false . gnus-agent-false))
2526 "Mapping from short score predicate symbols to predicate functions.")
2528 (defun gnus-agent-spam-p ()
2529 "Say whether an article is spam or not."
2530 (unless gnus-agent-spam-hashtb
2531 (setq gnus-agent-spam-hashtb (gnus-make-hashtable 1000)))
2532 (if (not (equal (mail-header-references gnus-headers) ""))
2534 (let ((string (gnus-simplify-subject (mail-header-subject gnus-headers))))
2536 (gnus-gethash string gnus-agent-spam-hashtb)
2537 (gnus-sethash string t gnus-agent-spam-hashtb)))))
2539 (defun gnus-agent-short-p ()
2540 "Say whether an article is short or not."
2541 (< (mail-header-lines gnus-headers) gnus-agent-short-article))
2543 (defun gnus-agent-long-p ()
2544 "Say whether an article is long or not."
2545 (> (mail-header-lines gnus-headers) gnus-agent-long-article))
2547 (defun gnus-agent-low-scored-p ()
2548 "Say whether an article has a low score or not."
2549 (< gnus-score gnus-agent-low-score))
2551 (defun gnus-agent-high-scored-p ()
2552 "Say whether an article has a high score or not."
2553 (> gnus-score gnus-agent-high-score))
2555 (defun gnus-agent-read-p ()
2556 "Say whether an article is read or not."
2557 (gnus-member-of-range (mail-header-number gnus-headers)
2558 (gnus-info-read (gnus-get-info gnus-newsgroup-name))))
2560 (defun gnus-category-make-function (predicate)
2561 "Make a function from PREDICATE."
2562 (let ((func (gnus-category-make-function-1 predicate)))
2563 (if (and (= (length func) 1)
2564 (symbolp (car func)))
2566 (gnus-byte-compile `(lambda () ,func)))))
2568 (defun gnus-agent-true ()
2572 (defun gnus-agent-false ()
2576 (defun gnus-category-make-function-1 (predicate)
2577 "Make a function from PREDICATE."
2579 ;; Functions are just returned as is.
2580 ((or (symbolp predicate)
2581 (functionp predicate))
2582 `(,(or (cdr (assq predicate gnus-category-predicate-alist))
2584 ;; More complex predicate.
2587 ((memq (car predicate) '(& and))
2589 ((memq (car predicate) '(| or))
2591 ((memq (car predicate) gnus-category-not)
2593 ,@(mapcar 'gnus-category-make-function-1 (cdr predicate))))
2595 (error "Unknown predicate type: %s" predicate))))
2597 (defun gnus-get-predicate (predicate)
2598 "Return the function implementing PREDICATE."
2599 (or (cdr (assoc predicate gnus-category-predicate-cache))
2600 (let ((func (gnus-category-make-function predicate)))
2601 (setq gnus-category-predicate-cache
2602 (nconc gnus-category-predicate-cache
2603 (list (cons predicate func))))
2606 (defun gnus-predicate-implies-unread (predicate)
2607 "Say whether PREDICATE implies unread articles only.
2608 It is okay to miss some cases, but there must be no false positives.
2609 That is, if this predicate returns true, then indeed the predicate must
2610 return only unread articles."
2611 (eq t (gnus-function-implies-unread-1
2612 (gnus-category-make-function-1 predicate))))
2614 (defun gnus-function-implies-unread-1 (function)
2615 "Recursively evaluate a predicate function to determine whether it can select
2616 any read articles. Returns t if the function is known to never
2617 return read articles, nil when it is known to always return read
2618 articles, and t_nil when the function may return both read and unread
2620 (let ((func (car function))
2621 (args (mapcar 'gnus-function-implies-unread-1 (cdr function))))
2622 (cond ((eq func 'and)
2623 (cond ((memq t args) ; if any argument returns only unread articles
2624 ;; then that argument constrains the result to only unread articles.
2626 ((memq 't_nil args) ; if any argument is indeterminate
2627 ;; then the result is indeterminate
2630 (cond ((memq nil args) ; if any argument returns read articles
2631 ;; then that argument ensures that the results includes read articles.
2633 ((memq 't_nil args) ; if any argument is indeterminate
2634 ;; then that argument ensures that the results are indeterminate
2636 (t ; if all arguments return only unread articles
2637 ;; then the result returns only unread articles
2640 (cond ((eq (car args) 't_nil) ; if the argument is indeterminate
2641 ; then the result is indeterminate
2644 ; toggle the result to be the opposite of the argument
2646 ((eq func 'gnus-agent-read-p)
2647 nil) ; The read predicate NEVER returns unread articles
2648 ((eq func 'gnus-agent-false)
2649 t) ; The false predicate returns t as the empty set excludes all read articles
2650 ((eq func 'gnus-agent-true)
2651 nil) ; The true predicate ALWAYS returns read articles
2652 ((catch 'found-match
2653 (let ((alist gnus-category-predicate-alist))
2655 (if (eq func (cdar alist))
2656 (throw 'found-match t)
2657 (setq alist (cdr alist))))))
2658 't_nil) ; All other predicates return read and unread articles
2660 (error "Unknown predicate function: %s" function)))))
2662 (defun gnus-group-category (group)
2663 "Return the category GROUP belongs to."
2664 (unless gnus-category-group-cache
2665 (setq gnus-category-group-cache (gnus-make-hashtable 1000))
2666 (let ((cs gnus-category-alist)
2668 (while (setq cat (pop cs))
2669 (setq groups (gnus-agent-cat-groups cat))
2671 (gnus-sethash (pop groups) cat gnus-category-group-cache)))))
2672 (or (gnus-gethash group gnus-category-group-cache)
2673 (assq 'default gnus-category-alist)))
2675 (defun gnus-agent-expire-group (group &optional articles force)
2676 "Expire all old articles in GROUP.
2677 If you want to force expiring of certain articles, this function can
2678 take ARTICLES, and FORCE parameters as well.
2680 The articles on which the expiration process runs are selected as follows:
2681 if ARTICLES is null, all read and unmarked articles.
2682 if ARTICLES is t, all articles.
2683 if ARTICLES is a list, just those articles.
2684 FORCE is equivalent to setting the expiration predicates to true."
2686 (list (let ((def (or (gnus-group-group-name)
2687 gnus-newsgroup-name)))
2688 (let ((select (read-string (if def
2689 (concat "Group Name ("
2692 (if (and (equal "" select)
2698 (gnus-agent-expire articles group force)
2699 (let ( ;; Bind gnus-agent-expire-stats to enable tracking of
2700 ;; expiration statistics of this single group
2701 (gnus-agent-expire-stats (list 0 0 0.0)))
2702 (if (or (not (eq articles t))
2704 (concat "Are you sure that you want to "
2705 "expire all articles in " group ".")))
2706 (let ((gnus-command-method (gnus-find-method-for-group group))
2707 (overview (gnus-get-buffer-create " *expire overview*"))
2710 (let ((active-file (gnus-agent-lib-file "active")))
2711 (when (file-exists-p active-file)
2713 (nnheader-insert-file-contents active-file)
2714 (gnus-active-to-gnus-format
2716 (setq orig (gnus-make-hashtable
2717 (count-lines (point-min) (point-max))))))
2719 (gnus-agent-expire-group-1
2720 group overview (gnus-gethash-safe group orig)
2722 (kill-buffer overview))))
2723 (gnus-message 4 (gnus-agent-expire-done-message)))))
2725 (defun gnus-agent-expire-group-1 (group overview active articles force)
2726 ;; Internal function - requires caller to have set
2727 ;; gnus-command-method, initialized overview buffer, and to have
2728 ;; provided a non-nil active
2730 (let ((dir (gnus-agent-group-pathname group)))
2731 (when (boundp 'gnus-agent-expire-current-dirs)
2732 (set 'gnus-agent-expire-current-dirs
2734 (symbol-value 'gnus-agent-expire-current-dirs))))
2736 (if (and (not force)
2737 (eq 'DISABLE (gnus-agent-find-parameter group
2738 'agent-enable-expiration)))
2739 (gnus-message 5 "Expiry skipping over %s" group)
2740 (gnus-message 5 "Expiring articles in %s" group)
2741 (gnus-agent-load-alist group)
2742 (let* ((stats (if (boundp 'gnus-agent-expire-stats)
2743 ;; Use the list provided by my caller
2744 (symbol-value 'gnus-agent-expire-stats)
2745 ;; otherwise use my own temporary list
2747 (info (gnus-get-info group))
2748 (alist gnus-agent-article-alist)
2749 (day (- (time-to-days (current-time))
2750 (gnus-agent-find-parameter group 'agent-days-until-old)))
2751 (specials (if (and alist
2753 ;; This could be a bit of a problem. I need to
2754 ;; keep the last article to avoid refetching
2755 ;; headers when using nntp in the backend. At
2756 ;; the same time, if someone uses a backend
2757 ;; that supports article moving then I may have
2758 ;; to remove the last article to complete the
2759 ;; move. Right now, I'm going to assume that
2760 ;; FORCE overrides specials.
2761 (list (caar (last alist)))))
2762 (unreads ;; Articles that are excluded from the
2763 ;; expiration process
2764 (cond (gnus-agent-expire-all
2765 ;; All articles are marked read by global decree
2768 ;; All articles are marked read by function
2772 ;; Unread articles are marked protected from
2773 ;; expiration Don't call
2774 ;; gnus-list-of-unread-articles as it returns
2775 ;; articles that have not been fetched into the
2778 (gnus-agent-unread-articles group)))
2780 ;; All articles EXCEPT those named by the caller
2781 ;; are protected from expiration
2782 (gnus-sorted-difference
2783 (gnus-uncompress-range
2785 (caar (last alist))))
2786 (sort articles '<)))))
2787 (marked ;; More articles that are excluded from the
2788 ;; expiration process
2789 (cond (gnus-agent-expire-all
2790 ;; All articles are unmarked by global decree
2793 ;; All articles are unmarked by function
2797 ;; All articles may as well be unmarked as the
2798 ;; unreads list already names the articles we are
2802 ;; Ticked and/or dormant articles are excluded
2805 (gnus-uncompress-range
2806 (cdr (assq 'tick (gnus-info-marks info))))
2807 (gnus-uncompress-range
2809 (gnus-info-marks info))))))))
2810 (nov-file (concat dir ".overview"))
2816 ;; The normal article alist contains elements that look like
2817 ;; (article# . fetch_date) I need to combine other
2818 ;; information with this list. For example, a flag indicating
2819 ;; that a particular article MUST BE KEPT. To do this, I'm
2820 ;; going to transform the elements to look like (article#
2821 ;; fetch_date keep_flag NOV_entry_marker) Later, I'll reverse
2822 ;; the process to generate the expired article alist.
2824 ;; Convert the alist elements to (article# fetch_date nil
2826 (setq dlist (mapcar (lambda (e)
2827 (list (car e) (cdr e) nil nil)) alist))
2829 ;; Convert the keep lists to elements that look like (article#
2830 ;; nil keep_flag nil) then append it to the expanded dlist
2831 ;; These statements are sorted by ascending precidence of the
2833 (setq dlist (nconc dlist
2835 (list e nil 'unread nil))
2837 (setq dlist (nconc dlist
2839 (list e nil 'marked nil))
2841 (setq dlist (nconc dlist
2843 (list e nil 'special nil))
2846 (set-buffer overview)
2848 (buffer-disable-undo)
2849 (when (file-exists-p nov-file)
2850 (gnus-message 7 "gnus-agent-expire: Loading overview...")
2851 (nnheader-insert-file-contents nov-file)
2852 (goto-char (point-min))
2855 (while (< (setq p (point)) (point-max))
2857 ;; If I successfully read an integer (the plus zero
2858 ;; ensures a numeric type), prepend a marker entry
2860 (push (list (+ 0 (read (current-buffer))) nil nil
2861 (set-marker (make-marker) p))
2864 (gnus-message 1 "gnus-agent-expire: read error \
2865 occurred when reading expression at %s in %s. Skipping to next \
2866 line." (point) nov-file)))
2867 ;; Whether I succeeded, or failed, it doesn't matter.
2868 ;; Move to the next line then try again.
2872 7 "gnus-agent-expire: Loading overview... Done"))
2873 (set-buffer-modified-p nil)
2875 ;; At this point, all of the information is in dlist. The
2876 ;; only problem is that much of it is spread across multiple
2877 ;; entries. Sort then MERGE!!
2878 (gnus-message 7 "gnus-agent-expire: Sorting entries... ")
2879 ;; If two entries have the same article-number then sort by
2880 ;; ascending keep_flag.
2887 (cond ((< (nth 0 a) (nth 0 b))
2889 ((> (nth 0 a) (nth 0 b))
2892 (let ((a (or (symbol-value (nth 2 a))
2894 (b (or (symbol-value (nth 2 b))
2897 (gnus-message 7 "gnus-agent-expire: Sorting entries... Done")
2898 (gnus-message 7 "gnus-agent-expire: Merging entries... ")
2899 (let ((dlist dlist))
2900 (while (cdr dlist) ; I'm not at the end-of-list
2901 (if (eq (caar dlist) (caadr dlist))
2902 (let ((first (cdr (car dlist)))
2903 (secnd (cdr (cadr dlist))))
2904 (setcar first (or (car first)
2905 (car secnd))) ; fetch_date
2906 (setq first (cdr first)
2908 (setcar first (or (car first)
2909 (car secnd))) ; Keep_flag
2910 (setq first (cdr first)
2912 (setcar first (or (car first)
2913 (car secnd))) ; NOV_entry_marker
2915 (setcdr dlist (cddr dlist)))
2916 (setq dlist (cdr dlist)))))
2917 (gnus-message 7 "gnus-agent-expire: Merging entries... Done")
2919 (let* ((len (float (length dlist)))
2923 (let ((new-completed (truncate (* 100.0
2924 (/ (setq cnt (1+ cnt))
2927 (when (> new-completed completed)
2928 (setq completed new-completed)
2929 (gnus-message 7 "%3d%% completed..." completed)))
2930 (let* ((entry (car dlist))
2931 (article-number (nth 0 entry))
2932 (fetch-date (nth 1 entry))
2933 (keep (nth 2 entry))
2934 (marker (nth 3 entry)))
2937 ;; Kept articles are unread, marked, or special.
2939 (gnus-agent-message 10
2940 "gnus-agent-expire: %s:%d: Kept %s article%s."
2941 group article-number keep (if fetch-date " and file" ""))
2943 (unless (file-exists-p
2944 (concat dir (number-to-string
2946 (setf (nth 1 entry) nil)
2947 (gnus-agent-message 3 "gnus-agent-expire cleared \
2948 download flag on %s:%d as the cached article file is missing."
2949 group (caar dlist)))
2951 (gnus-message 1 "gnus-agent-expire detected a \
2952 missing NOV entry. Run gnus-agent-regenerate-group to restore it.")))
2953 (gnus-agent-append-to-list
2955 (cons article-number fetch-date)))
2957 ;; The following articles are READ, UNMARKED, and
2958 ;; ORDINARY. See if they can be EXPIRED!!!
2961 ((not (integerp fetch-date))
2962 'read) ;; never fetched article (may expire
2964 ((not (file-exists-p
2965 (concat dir (number-to-string
2967 (setf (nth 1 entry) nil)
2968 'externally-expired) ;; Can't find the cached
2969 ;; article. Handle case
2970 ;; as though this article
2971 ;; was never fetched.
2973 ;; We now have the arrival day, so we see
2974 ;; whether it's old enough to be expired.
2980 ;; I found some reason to expire this entry.
2982 (let ((actions nil))
2983 (when (memq type '(forced expired))
2984 (ignore-errors ; Just being paranoid.
2985 (let ((file-name (concat dir (number-to-string
2987 (incf (nth 2 stats) (nth 7 (file-attributes file-name)))
2988 (incf (nth 1 stats))
2989 (delete-file file-name))
2990 (push "expired cached article" actions))
2991 (setf (nth 1 entry) nil)
2995 (push "NOV entry removed" actions)
2998 (incf (nth 0 stats))
3000 (let ((from (point-at-bol))
3001 (to (progn (forward-line 1) (point))))
3002 (incf (nth 2 stats) (- to from))
3003 (delete-region from to)))
3005 ;; If considering all articles is set, I can only
3006 ;; expire article IDs that are no longer in the
3007 ;; active range (That is, articles that preceed the
3008 ;; first article in the new alist).
3009 (if (and gnus-agent-consider-all-articles
3010 (>= article-number (car active)))
3011 ;; I have to keep this ID in the alist
3012 (gnus-agent-append-to-list
3013 tail-alist (cons article-number fetch-date))
3014 (push (format "Removed %s article number from \
3015 article alist" type) actions))
3018 (gnus-agent-message 8 "gnus-agent-expire: %s:%d: %s"
3019 group article-number
3020 (mapconcat 'identity actions ", ")))))
3023 10 "gnus-agent-expire: %s:%d: Article kept as \
3024 expiration tests failed." group article-number)
3025 (gnus-agent-append-to-list
3026 tail-alist (cons article-number fetch-date)))
3029 ;; Clean up markers as I want to recycle this buffer
3030 ;; over several groups.
3032 (set-marker marker nil))
3034 (setq dlist (cdr dlist))))
3036 (setq alist (cdr alist))
3038 (let ((inhibit-quit t))
3039 (unless (equal alist gnus-agent-article-alist)
3040 (setq gnus-agent-article-alist alist)
3041 (gnus-agent-save-alist group))
3043 (when (buffer-modified-p)
3044 (let ((coding-system-for-write
3045 gnus-agent-file-coding-system))
3046 (gnus-make-directory dir)
3047 (write-region (point-min) (point-max) nov-file nil
3049 ;; clear the modified flag as that I'm not confused by
3050 ;; its status on the next pass through this routine.
3051 (set-buffer-modified-p nil)))
3053 (when (eq articles t)
3054 (gnus-summary-update-info))))))))
3056 (defun gnus-agent-expire (&optional articles group force)
3057 "Expire all old articles.
3058 If you want to force expiring of certain articles, this function can
3059 take ARTICLES, GROUP and FORCE parameters as well.
3061 The articles on which the expiration process runs are selected as follows:
3062 if ARTICLES is null, all read and unmarked articles.
3063 if ARTICLES is t, all articles.
3064 if ARTICLES is a list, just those articles.
3065 Setting GROUP will limit expiration to that group.
3066 FORCE is equivalent to setting the expiration predicates to true."
3070 (gnus-agent-expire-group group articles force)
3071 (if (or (not (eq articles t))
3072 (yes-or-no-p "Are you sure that you want to expire all \
3073 articles in every agentized group."))
3074 (let ((methods (gnus-agent-covered-methods))
3075 ;; Bind gnus-agent-expire-current-dirs to enable tracking
3076 ;; of agent directories.
3077 (gnus-agent-expire-current-dirs nil)
3078 ;; Bind gnus-agent-expire-stats to enable tracking of
3079 ;; expiration statistics across all groups
3080 (gnus-agent-expire-stats (list 0 0 0.0))
3081 gnus-command-method overview orig)
3082 (setq overview (gnus-get-buffer-create " *expire overview*"))
3084 (while (setq gnus-command-method (pop methods))
3085 (let ((active-file (gnus-agent-lib-file "active")))
3086 (when (file-exists-p active-file)
3088 (nnheader-insert-file-contents active-file)
3089 (gnus-active-to-gnus-format
3091 (setq orig (gnus-make-hashtable
3092 (count-lines (point-min) (point-max))))))
3093 (dolist (expiring-group (gnus-groups-from-server
3094 gnus-command-method))
3096 (gnus-gethash-safe expiring-group orig)))
3100 (gnus-agent-expire-group-1
3101 expiring-group overview active articles force))))))))
3102 (kill-buffer overview))
3103 (gnus-agent-expire-unagentized-dirs)
3104 (gnus-message 4 (gnus-agent-expire-done-message))))))
3106 (defun gnus-agent-expire-done-message ()
3107 (if (and (> gnus-verbose 4)
3108 (boundp 'gnus-agent-expire-stats))
3109 (let* ((stats (symbol-value 'gnus-agent-expire-stats))
3110 (size (nth 2 stats))
3111 (units '(B KB MB GB)))
3112 (while (and (> size 1024.0)
3114 (setq size (/ size 1024.0)
3117 (format "Expiry recovered %d NOV entries, deleted %d files,\
3124 (defun gnus-agent-expire-unagentized-dirs ()
3125 (when (and gnus-agent-expire-unagentized-dirs
3126 (boundp 'gnus-agent-expire-current-dirs))
3127 (let* ((keep (gnus-make-hashtable))
3128 ;; Formally bind gnus-agent-expire-current-dirs so that the
3129 ;; compiler will not complain about free references.
3130 (gnus-agent-expire-current-dirs
3131 (symbol-value 'gnus-agent-expire-current-dirs))
3134 (gnus-sethash gnus-agent-directory t keep)
3135 (while gnus-agent-expire-current-dirs
3136 (setq dir (pop gnus-agent-expire-current-dirs))
3137 (when (and (stringp dir)
3138 (file-directory-p dir))
3139 (while (not (gnus-gethash dir keep))
3140 (gnus-sethash dir t keep)
3141 (setq dir (file-name-directory (directory-file-name dir))))))
3148 "Given a directory, check it and its subdirectories for
3149 membership in the keep hash. If it isn't found, add
3151 (let ((files (directory-files d))
3153 (while (setq file (pop files))
3154 (cond ((equal file ".") ; Ignore self
3156 ((equal file "..") ; Ignore parent
3158 ((equal file ".overview")
3159 ;; Directory must contain .overview to be
3160 ;; agent's cache of a group.
3161 (let ((d (file-name-as-directory d))
3163 ;; Search ancestor's for last directory NOT
3164 ;; found in keep hash.
3165 (while (not (gnus-gethash
3166 (setq d (file-name-directory d)) keep))
3168 d (directory-file-name d)))
3169 ;; if ANY ancestor was NOT in keep hash and
3170 ;; it it's already in to-remove, add it to
3173 (not (member r to-remove)))
3174 (push r to-remove))))
3175 ((file-directory-p (setq file (nnheader-concat d file)))
3176 (funcall checker file)))))))))
3177 (funcall checker (expand-file-name gnus-agent-directory))
3179 (when (and to-remove
3180 (or gnus-expert-user
3182 "gnus-agent-expire has identified local directories that are\
3183 not currently required by any agentized group. Do you wish to consider\
3186 (let ((dir (pop to-remove)))
3187 (if (gnus-y-or-n-p (format "Delete %s? " dir))
3188 (let* (delete-recursive
3193 (if (file-directory-p f-or-d)
3195 (delete-directory f-or-d)
3198 (or (member f '("." ".."))
3199 (funcall delete-recursive
3202 (directory-files f-or-d))
3203 (delete-directory f-or-d)))
3204 (delete-file f-or-d)))))))
3205 (funcall delete-recursive dir))))))))))
3208 (defun gnus-agent-batch ()
3209 "Start Gnus, send queue and fetch session."
3211 (let ((init-file-user "")
3212 (gnus-always-read-dribble-file t))
3214 (let ((gnus-agent-confirmation-function 'gnus-agent-batch-confirmation))
3215 (gnus-group-send-queue)
3216 (gnus-agent-fetch-session)))
3218 (defun gnus-agent-unread-articles (group)
3219 (let* ((read (gnus-info-read (gnus-get-info group)))
3220 (known (gnus-agent-load-alist group))
3222 (tail-unread unread))
3223 (while (and known read)
3224 (let ((candidate (car (pop known))))
3225 (while (let* ((range (car read))
3226 (min (if (numberp range) range (car range)))
3227 (max (if (numberp range) range (cdr range))))
3228 (cond ((or (not min)
3230 (gnus-agent-append-to-list tail-unread candidate)
3233 (setq read (cdr read))
3234 ;; return t so that I always loop one more
3235 ;; time. If I just iterated off the end of
3236 ;; read, min will become nil and the current
3237 ;; candidate will be added to the unread list.
3240 (gnus-agent-append-to-list tail-unread (car (pop known))))
3243 (defun gnus-agent-uncached-articles (articles group &optional cached-header)
3244 "Restrict ARTICLES to numbers already fetched.
3245 Returns a sublist of ARTICLES that excludes thos article ids in GROUP
3246 that have already been fetched.
3247 If CACHED-HEADER is nil, articles are only excluded if the article itself
3250 ;; Logically equivalent to: (gnus-sorted-difference articles (mapcar
3251 ;; 'car gnus-agent-article-alist))
3253 ;; Functionally, I don't need to construct a temp list using mapcar.
3255 (if (and (or gnus-agent-cache (not gnus-plugged))
3256 (gnus-agent-load-alist group))
3257 (let* ((ref gnus-agent-article-alist)
3259 (uncached (list nil))
3260 (tail-uncached uncached))
3261 (while (and ref arts)
3262 (let ((v1 (car arts))
3264 (cond ((< v1 v2) ; v1 does not appear in the reference list
3265 (gnus-agent-append-to-list tail-uncached v1)
3266 (setq arts (cdr arts)))
3268 (unless (or cached-header (cdar ref)) ; v1 is already cached
3269 (gnus-agent-append-to-list tail-uncached v1))
3270 (setq arts (cdr arts))
3271 (setq ref (cdr ref)))
3272 (t ; reference article (v2) preceeds the list being filtered
3273 (setq ref (cdr ref))))))
3275 (gnus-agent-append-to-list tail-uncached (pop arts)))
3277 ;; if gnus-agent-load-alist fails, no articles are cached.
3280 (defun gnus-agent-retrieve-headers (articles group &optional fetch-old)
3282 (gnus-agent-create-buffer)
3283 (let ((gnus-decode-encoded-word-function 'identity)
3284 (file (gnus-agent-article-name ".overview" group))
3285 cached-articles uncached-articles)
3286 (gnus-make-directory (nnheader-translate-file-chars
3287 (file-name-directory file) t))
3289 ;; Populate temp buffer with known headers
3290 (when (file-exists-p file)
3291 (with-current-buffer gnus-agent-overview-buffer
3293 (let ((nnheader-file-coding-system
3294 gnus-agent-file-coding-system))
3295 (nnheader-insert-nov-file file (car articles)))))
3297 (if (setq uncached-articles (gnus-agent-uncached-articles articles group
3300 ;; Populate nntp-server-buffer with uncached headers
3301 (set-buffer nntp-server-buffer)
3303 (cond ((not (eq 'nov (let (gnus-agent) ; Turn off agent
3304 (gnus-retrieve-headers
3305 uncached-articles group fetch-old))))
3306 (nnvirtual-convert-headers))
3307 ((eq 'nntp (car gnus-current-select-method))
3308 ;; The author of gnus-get-newsgroup-headers-xover
3309 ;; reports that the XOVER command is commonly
3310 ;; unreliable. The problem is that recently
3311 ;; posted articles may not be entered into the
3312 ;; NOV database in time to respond to my XOVER
3315 ;; I'm going to use his assumption that the NOV
3316 ;; database is updated in order of ascending
3317 ;; article ID. Therefore, a response containing
3318 ;; article ID N implies that all articles from 1
3319 ;; to N-1 are up-to-date. Therefore, missing
3320 ;; articles in that range have expired.
3322 (set-buffer nntp-server-buffer)
3323 (let* ((fetched-articles (list nil))
3324 (tail-fetched-articles fetched-articles)
3325 (min (cond ((numberp fetch-old)
3326 (max 1 (- (car articles) fetch-old)))
3331 (max (car (last articles))))
3333 ;; Get the list of articles that were fetched
3334 (goto-char (point-min))
3335 (let ((pm (point-max)))
3336 (while (< (point) pm)
3337 (when (looking-at "[0-9]+\t")
3338 (gnus-agent-append-to-list
3339 tail-fetched-articles
3340 (read (current-buffer))))
3343 ;; Clip this list to the headers that will
3344 ;; actually be returned
3345 (setq fetched-articles (gnus-list-range-intersection
3346 (cdr fetched-articles)
3349 ;; Clip the uncached articles list to exclude
3350 ;; IDs after the last FETCHED header. The
3351 ;; excluded IDs may be fetchable using HEAD.
3352 (if (car tail-fetched-articles)
3353 (setq uncached-articles
3354 (gnus-list-range-intersection
3356 (cons (car uncached-articles)
3357 (car tail-fetched-articles)))))
3359 ;; Create the list of articles that were
3360 ;; "successfully" fetched. Success, in this
3361 ;; case, means that the ID should not be
3362 ;; fetched again. In the case of an expired
3363 ;; article, the header will not be fetched.
3364 (setq uncached-articles
3365 (gnus-sorted-nunion fetched-articles
3369 ;; Erase the temp buffer
3370 (set-buffer gnus-agent-overview-buffer)
3373 ;; Copy the nntp-server-buffer to the temp buffer
3374 (set-buffer nntp-server-buffer)
3375 (copy-to-buffer gnus-agent-overview-buffer (point-min) (point-max))
3377 ;; Merge the temp buffer with the known headers (found on
3378 ;; disk in FILE) into the nntp-server-buffer
3379 (when (and uncached-articles (file-exists-p file))
3380 (gnus-agent-braid-nov group uncached-articles file))
3382 ;; Save the new set of known headers to FILE
3383 (set-buffer nntp-server-buffer)
3384 (let ((coding-system-for-write
3385 gnus-agent-file-coding-system))
3386 (gnus-agent-check-overview-buffer)
3387 (write-region (point-min) (point-max) file nil 'silent))
3389 ;; Update the group's article alist to include the newly
3390 ;; fetched articles.
3391 (gnus-agent-load-alist group)
3392 (gnus-agent-save-alist group uncached-articles nil)
3395 ;; Copy the temp buffer to the nntp-server-buffer
3396 (set-buffer nntp-server-buffer)
3398 (insert-buffer-substring gnus-agent-overview-buffer)))
3401 (not (numberp fetch-old)))
3402 t ; Don't remove anything.
3403 (nnheader-nov-delete-outside-range
3404 (if fetch-old (max 1 (- (car articles) fetch-old))
3406 (car (last articles)))
3411 (defun gnus-agent-request-article (article group)
3412 "Retrieve ARTICLE in GROUP from the agent cache."
3413 (when (and gnus-agent
3414 (or gnus-agent-cache
3417 (let* ((gnus-command-method (gnus-find-method-for-group group))
3418 (file (gnus-agent-article-name (number-to-string article) group))
3419 (buffer-read-only nil))
3420 (when (and (file-exists-p file)
3421 (> (nth 7 (file-attributes file)) 0))
3423 (gnus-kill-all-overlays)
3424 (let ((coding-system-for-read gnus-cache-coding-system))
3425 (insert-file-contents file))
3428 (defun gnus-agent-regenerate-group (group &optional reread)
3430 If REREAD is t, all articles in the .overview are marked as unread.
3431 If REREAD is not nil, downloaded articles are marked as unread."
3433 (list (let ((def (or (gnus-group-group-name)
3434 gnus-newsgroup-name)))
3435 (let ((select (read-string (if def
3436 (concat "Group Name ("
3439 (if (and (equal "" select)
3445 (cursor-in-echo-area t)
3446 (echo-keystrokes 0))
3447 (message "Mark as unread: (n)one / (a)ll / all (d)ownloaded articles? (n) ")
3448 (setq c (read-char-exclusive))
3450 (cond ((or (eq c ?\r) (eq c ?n) (eq c ?N))
3452 ((or (eq c ?a) (eq c ?A))
3454 ((or (eq c ?d) (eq c ?D))
3455 (throw 'mark 'some)))
3456 (gnus-message 3 "Ignoring unexpected input")
3461 (gnus-message 5 "Regenerating in %s" group)
3462 (let* ((gnus-command-method (or gnus-command-method
3463 (gnus-find-method-for-group group)))
3464 (file (gnus-agent-article-name ".overview" group))
3465 (dir (file-name-directory file))
3467 (downloaded (if (file-exists-p dir)
3468 (sort (mapcar (lambda (name) (string-to-int name))
3469 (directory-files dir nil "^[0-9]+$" t))
3471 (progn (gnus-make-directory dir) nil)))
3476 (mm-with-unibyte-buffer
3477 (if (file-exists-p file)
3478 (let ((nnheader-file-coding-system
3479 gnus-agent-file-coding-system))
3480 (nnheader-insert-file-contents file)))
3481 (set-buffer-modified-p nil)
3483 ;; Load the article IDs found in the overview file. As a
3484 ;; side-effect, validate the file contents.
3488 (goto-char (point-min))
3489 (while (< (point) (point-max))
3490 (cond ((and (looking-at "[0-9]+\t")
3491 (<= (- (match-end 0) (match-beginning 0)) 9))
3492 (push (read (current-buffer)) nov-arts)
3494 (let ((l1 (car nov-arts))
3495 (l2 (cadr nov-arts)))
3499 (gnus-message 3 "gnus-agent-regenerate-group: NOV\
3500 entries are NOT in ascending order.")
3501 ;; Don't sort now as I haven't verified
3502 ;; that every line begins with a number
3506 (gnus-message 4 "gnus-agent-regenerate-group: NOV\
3507 entries contained duplicate of article %s. Duplicate deleted." l1)
3509 (setq nov-arts (cdr nov-arts))))))
3511 (gnus-message 1 "gnus-agent-regenerate-group: NOV\
3512 entries contained line that did not begin with an article number. Deleted\
3514 (gnus-delete-line))))
3516 (gnus-message 5 "gnus-agent-regenerate-group: Sorting NOV\
3517 entries into ascending order.")
3518 (sort-numeric-fields 1 (point-min) (point-max))
3519 (setq nov-arts nil))))
3520 (gnus-agent-check-overview-buffer)
3522 ;; Construct a new article alist whose nodes match every header
3523 ;; in the .overview file. As a side-effect, missing headers are
3524 ;; reconstructed from the downloaded article file.
3525 (while (or downloaded nov-arts)
3526 (cond ((and downloaded
3528 (> (car downloaded) (car nov-arts))))
3529 ;; This entry is missing from the overview file
3530 (gnus-message 3 "Regenerating NOV %s %d..." group
3532 (let ((file (concat dir (number-to-string (car downloaded)))))
3533 (mm-with-unibyte-buffer
3534 (nnheader-insert-file-contents file)
3535 (nnheader-remove-body)
3536 (setq header (nnheader-parse-naked-head)))
3537 (mail-header-set-number header (car downloaded))
3539 (let ((key (concat "^" (int-to-string (car nov-arts))
3541 (or (re-search-backward key nil t)
3542 (re-search-forward key))
3544 (goto-char (point-min)))
3545 (nnheader-insert-nov header))
3546 (setq nov-arts (cons (car downloaded) nov-arts)))
3547 ((eq (car downloaded) (car nov-arts))
3548 ;; This entry in the overview has been downloaded
3549 (push (cons (car downloaded)
3551 (nth 5 (file-attributes
3552 (concat dir (number-to-string
3553 (car downloaded))))))) alist)
3554 (setq downloaded (cdr downloaded))
3555 (setq nov-arts (cdr nov-arts)))
3557 ;; This entry in the overview has not been downloaded
3558 (push (cons (car nov-arts) nil) alist)
3559 (setq nov-arts (cdr nov-arts)))))
3561 ;; When gnus-agent-consider-all-articles is set,
3562 ;; gnus-agent-regenerate-group should NOT remove article IDs from
3563 ;; the alist. Those IDs serve as markers to indicate that an
3564 ;; attempt has been made to fetch that article's header.
3566 ;; When gnus-agent-consider-all-articles is NOT set,
3567 ;; gnus-agent-regenerate-group can remove the article ID of every
3568 ;; article (with the exception of the last ID in the list - it's
3569 ;; special) that no longer appears in the overview. In this
3570 ;; situtation, the last article ID in the list implies that it,
3571 ;; and every article ID preceeding it, have been fetched from the
3574 (if gnus-agent-consider-all-articles
3575 ;; Restore all article IDs that were not found in the overview file.
3576 (let* ((n (cons nil alist))
3578 (o (gnus-agent-load-alist group)))
3580 (let ((nID (caadr n))
3583 (setq n (setcdr n (list (list oID))))
3586 (setcdr n (cons (list oID) (cdr n)))
3592 (setq n (cdr n))))))
3593 (setq alist (cdr merged)))
3594 ;; Restore the last article ID if it is not already in the new alist
3595 (let ((n (last alist))
3596 (o (last (gnus-agent-load-alist group))))
3600 (push (cons (caar o) nil) alist))
3601 ((< (caar n) (caar o))
3602 (setcdr n (list (car o)))))))
3604 (let ((inhibit-quit t))
3605 (if (setq regenerated (buffer-modified-p))
3606 (let ((coding-system-for-write gnus-agent-file-coding-system))
3607 (write-region (point-min) (point-max) file nil 'silent)))
3609 (setq regenerated (or regenerated
3610 (and reread gnus-agent-article-alist)
3611 (not (equal alist gnus-agent-article-alist))))
3613 (setq gnus-agent-article-alist alist)
3616 (gnus-agent-save-alist group)
3618 ;; I have to alter the group's active range NOW as
3619 ;; gnus-make-ascending-articles-unread will use it to
3620 ;; recalculate the number of unread articles in the group
3622 (let ((group (gnus-group-real-name group))
3623 (group-active (gnus-active group)))
3624 (gnus-agent-possibly-alter-active group group-active)))))
3626 (when (and reread gnus-agent-article-alist)
3627 (gnus-make-ascending-articles-unread
3629 (delq nil (mapcar (function (lambda (c)
3630 (cond ((eq reread t)
3634 gnus-agent-article-alist)))
3636 (when (gnus-buffer-live-p gnus-group-buffer)
3637 (gnus-group-update-group group t)
3640 (gnus-message 5 nil)
3644 (defun gnus-agent-regenerate (&optional clean reread)
3645 "Regenerate all agent covered files.
3646 If CLEAN, obsolete (ignore)."
3649 (gnus-message 4 "Regenerating Gnus agent files...")
3650 (dolist (gnus-command-method (gnus-agent-covered-methods))
3651 (dolist (group (gnus-groups-from-server gnus-command-method))
3652 (setq regenerated (or (gnus-agent-regenerate-group group reread)
3654 (gnus-message 4 "Regenerating Gnus agent files...done")
3658 (defun gnus-agent-go-online (&optional force)
3659 "Switch servers into online status."
3660 (interactive (list t))
3661 (dolist (server gnus-opened-servers)
3662 (when (eq (nth 1 server) 'offline)
3663 (if (if (eq force 'ask)
3665 (format "Switch %s:%s into online status? "
3666 (caar server) (cadar server)))
3668 (setcar (nthcdr 1 server) 'close)))))
3670 (defun gnus-agent-toggle-group-plugged (group)
3671 "Toggle the status of the server of the current group."
3672 (interactive (list (gnus-group-group-name)))
3673 (let* ((method (gnus-find-method-for-group group))
3674 (status (cadr (assoc method gnus-opened-servers))))
3675 (if (eq status 'offline)
3676 (gnus-server-set-status method 'closed)
3677 (gnus-close-server method)
3678 (gnus-server-set-status method 'offline))
3679 (message "Turn %s:%s from %s to %s." (car method) (cadr method)
3680 (if (eq status 'offline) 'offline 'online)
3681 (if (eq status 'offline) 'online 'offline))))
3683 (defun gnus-agent-group-covered-p (group)
3684 (gnus-agent-method-p (gnus-group-method group)))
3686 (add-hook 'gnus-group-prepare-hook
3690 (when (listp gnus-agent-expire-days)
3693 (gnus-message 1 "WARNING: gnus-agent-expire-days no longer\
3694 supports being set to a list.")(sleep-for 3)
3695 (gnus-message 1 "Change your configuration to set it to an\
3696 integer.")(sleep-for 3)
3697 (gnus-message 1 "I am now setting group parameters on each\
3698 group to match the configuration that the list offered.")
3701 (let ((groups (gnus-group-listed-groups)))
3703 (let* ((group (pop groups))
3704 (days gnus-agent-expire-days)
3707 (when (eq 0 (string-match
3710 (throw 'found (cadar days)))
3711 (setq days (cdr days)))
3714 (gnus-group-set-parameter group 'agent-days-until-old
3717 (let ((h gnus-group-prepare-hook))
3719 (let ((func (pop h)))
3720 (when (and (listp func)
3721 (eq (cadr (caddr func)) 'gnus-agent-do-once))
3722 (remove-hook 'gnus-group-prepare-hook func)
3725 (gnus-message 1 "I have finished setting group parameters on\
3726 each group. You may now customize your groups and/or topics to control the\
3729 (provide 'gnus-agent)
3731 ;;; gnus-agent.el ends here