1 ;;; gnus-agent.el --- unplugged support for Gnus
3 ;; Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
4 ;; 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
6 ;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
7 ;; This file is part of GNU Emacs.
9 ;; GNU Emacs is free software: you can redistribute it and/or modify
10 ;; it under the terms of the GNU General Public License as published by
11 ;; the Free Software Foundation, either version 3 of the License, or
12 ;; (at your option) any later version.
14 ;; GNU Emacs is distributed in the hope that it will be useful,
15 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
16 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 ;; GNU General Public License for more details.
19 ;; You should have received a copy of the GNU General Public License
20 ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
35 (if (featurep 'xemacs)
40 (autoload 'gnus-server-update-server "gnus-srvr")
41 (autoload 'gnus-agent-customize-category "gnus-cus")
43 (defcustom gnus-agent-directory (nnheader-concat gnus-directory "agent/")
44 "Where the Gnus agent will store its files."
48 (defcustom gnus-agent-plugged-hook nil
49 "Hook run when plugging into the network."
53 (defcustom gnus-agent-unplugged-hook nil
54 "Hook run when unplugging from the network."
58 (defcustom gnus-agent-fetched-hook nil
59 "Hook run when finished fetching articles."
64 (defcustom gnus-agent-handle-level gnus-level-subscribed
65 "Groups on levels higher than this variable will be ignored by the Agent."
69 (defcustom gnus-agent-expire-days 7
70 "Read articles older than this will be expired.
71 If you wish to disable Agent expiring, see `gnus-agent-enable-expiration'."
73 :type '(number :tag "days"))
75 (defcustom gnus-agent-expire-all nil
76 "If non-nil, also expire unread, ticked and dormant articles.
77 If nil, only read articles will be expired."
81 (defcustom gnus-agent-group-mode-hook nil
82 "Hook run in Agent group minor modes."
86 ;; Extracted from gnus-xmas-redefine in order to preserve user settings
87 (when (featurep 'xemacs)
88 (add-hook 'gnus-agent-group-mode-hook 'gnus-xmas-agent-group-menu-add))
90 (defcustom gnus-agent-summary-mode-hook nil
91 "Hook run in Agent summary minor modes."
95 ;; Extracted from gnus-xmas-redefine in order to preserve user settings
96 (when (featurep 'xemacs)
97 (add-hook 'gnus-agent-summary-mode-hook 'gnus-xmas-agent-summary-menu-add))
99 (defcustom gnus-agent-server-mode-hook nil
100 "Hook run in Agent summary minor modes."
104 ;; Extracted from gnus-xmas-redefine in order to preserve user settings
105 (when (featurep 'xemacs)
106 (add-hook 'gnus-agent-server-mode-hook 'gnus-xmas-agent-server-menu-add))
108 (defcustom gnus-agent-confirmation-function 'y-or-n-p
109 "Function to confirm when error happens."
114 (defcustom gnus-agent-synchronize-flags nil
115 "Indicate if flags are synchronized when you plug in.
116 If this is `ask' the hook will query the user."
117 ;; If the default switches to something else than nil, then the function
118 ;; should be fixed not be exceedingly slow. See 2005-09-20 ChangeLog entry.
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
166 (defcustom gnus-agent-enable-expiration 'ENABLE
167 "The default expiration state for each group.
168 When set to ENABLE, the default, `gnus-agent-expire' will expire old
169 contents from a group's local storage. This value may be overridden
170 to disable expiration in specific categories, topics, and groups. Of
171 course, you could change gnus-agent-enable-expiration to DISABLE then
172 enable expiration per categories, topics, and groups."
175 :type '(radio (const :format "Enable " ENABLE)
176 (const :format "Disable " DISABLE)))
178 (defcustom gnus-agent-expire-unagentized-dirs t
179 "*Whether expiration should expire in unagentized directories.
180 Have gnus-agent-expire scan the directories under
181 \(gnus-agent-directory) for groups that are no longer agentized.
182 When found, offer to remove them."
187 (defcustom gnus-agent-auto-agentize-methods nil
188 "Initially, all servers from these methods are agentized.
189 The user may remove or add servers using the Server buffer.
190 See Info node `(gnus)Server Buffer'."
192 :type '(repeat symbol)
195 (defcustom gnus-agent-queue-mail t
196 "Whether and when outgoing mail should be queued by the agent.
197 When `always', always queue outgoing mail. When nil, never
198 queue. Otherwise, queue if and only if unplugged."
201 :type '(radio (const :format "Always" always)
202 (const :format "Never" nil)
203 (const :format "When unplugged" t)))
205 (defcustom gnus-agent-prompt-send-queue nil
206 "If non-nil, `gnus-group-send-queue' will prompt if called when
212 (defcustom gnus-agent-article-alist-save-format 1
213 "Indicates whether to use compression(2), versus no
214 compression(1), when writing agentview files. The compressed
215 files do save space but load times are 6-7 times higher. A group
216 must be opened then closed for the agentview to be updated using
218 ;; Wouldn't symbols instead numbers be nicer? --rsteib
221 :type '(radio (const :format "Compressed" 2)
222 (const :format "Uncompressed" 1)))
224 ;;; Internal variables
226 (defvar gnus-agent-history-buffers nil)
227 (defvar gnus-agent-buffer-alist nil)
228 (defvar gnus-agent-article-alist nil
229 "An assoc list identifying the articles whose headers have been fetched.
230 If successfully fetched, these headers will be stored in the group's overview
231 file. The key of each assoc pair is the article ID, the value of each assoc
232 pair is a flag indicating whether the identified article has been downloaded
233 \(gnus-agent-fetch-articles sets the value to the day of the download).
235 1) The last element of this list can not be expired as some
236 routines (for example, get-agent-fetch-headers) use the last
237 value to track which articles have had their headers retrieved.
238 2) The function `gnus-agent-regenerate' may destructively modify the value.")
239 (defvar gnus-agent-group-alist nil)
240 (defvar gnus-category-alist nil)
241 (defvar gnus-agent-current-history nil)
242 (defvar gnus-agent-overview-buffer nil)
243 (defvar gnus-category-predicate-cache nil)
244 (defvar gnus-category-group-cache nil)
245 (defvar gnus-agent-spam-hashtb nil)
246 (defvar gnus-agent-file-name nil)
247 (defvar gnus-agent-send-mail-function nil)
248 (defvar gnus-agent-file-coding-system 'raw-text)
249 (defvar gnus-agent-file-loading-cache nil)
250 (defvar gnus-agent-total-fetched-hashtb nil)
251 (defvar gnus-agent-inhibit-update-total-fetched-for nil)
252 (defvar gnus-agent-need-update-total-fetched-for nil)
255 (defvar gnus-headers)
258 ;; Added to support XEmacs
260 (unless (fboundp 'directory-files-and-attributes)
261 (defun directory-files-and-attributes (directory
262 &optional full match nosort)
264 (dolist (file (directory-files directory full match nosort))
265 (push (cons file (file-attributes file)) result))
266 (nreverse result)))))
272 (defun gnus-open-agent ()
274 (gnus-agent-read-servers)
276 (gnus-agent-create-buffer)
277 (add-hook 'gnus-group-mode-hook 'gnus-agent-mode)
278 (add-hook 'gnus-summary-mode-hook 'gnus-agent-mode)
279 (add-hook 'gnus-server-mode-hook 'gnus-agent-mode))
281 (defun gnus-agent-create-buffer ()
282 (if (gnus-buffer-live-p gnus-agent-overview-buffer)
284 (setq gnus-agent-overview-buffer
285 (gnus-get-buffer-create " *Gnus agent overview*"))
286 (with-current-buffer gnus-agent-overview-buffer
287 (mm-enable-multibyte))
290 (gnus-add-shutdown 'gnus-close-agent 'gnus)
292 (defun gnus-close-agent ()
293 (setq gnus-category-predicate-cache nil
294 gnus-category-group-cache nil
295 gnus-agent-spam-hashtb nil)
296 (gnus-kill-buffer gnus-agent-overview-buffer))
299 ;;; Utility functions
302 (defmacro gnus-agent-with-refreshed-group (group &rest body)
303 "Performs the body then updates the group's line in the group
304 buffer. Automatically blocks multiple updates due to recursion."
305 `(prog1 (let ((gnus-agent-inhibit-update-total-fetched-for t)) ,@body)
306 (when (and gnus-agent-need-update-total-fetched-for
307 (not gnus-agent-inhibit-update-total-fetched-for))
308 (with-current-buffer gnus-group-buffer
309 (setq gnus-agent-need-update-total-fetched-for nil)
310 (gnus-group-update-group ,group t)))))
312 (defun gnus-agent-read-file (file)
313 "Load FILE and do a `read' there."
316 (nnheader-insert-file-contents file)
317 (goto-char (point-min))
318 (read (current-buffer)))))
320 (defsubst gnus-agent-method ()
321 (concat (symbol-name (car gnus-command-method)) "/"
322 (if (equal (cadr gnus-command-method) "")
324 (cadr gnus-command-method))))
326 (defsubst gnus-agent-directory ()
327 "The name of the Gnus agent directory."
328 (nnheader-concat gnus-agent-directory
329 (nnheader-translate-file-chars (gnus-agent-method)) "/"))
331 (defun gnus-agent-lib-file (file)
332 "The full name of the Gnus agent library FILE."
333 (expand-file-name file
334 (file-name-as-directory
335 (expand-file-name "agent.lib" (gnus-agent-directory)))))
337 (defun gnus-agent-cat-set-property (category property value)
339 (setcdr (or (assq property category)
340 (let ((cell (cons property nil)))
341 (setcdr category (cons cell (cdr category)))
343 (let ((category category))
344 (while (cond ((eq property (caadr category))
345 (setcdr category (cddr category))
348 (setq category (cdr category)))))))
352 (defmacro gnus-agent-cat-defaccessor (name prop-name)
353 "Define accessor and setter methods for manipulating a list of the form
354 \(NAME (PROPERTY1 VALUE1) ... (PROPERTY_N VALUE_N)).
355 Given the call (gnus-agent-cat-defaccessor func PROPERTY1), the list may be
356 manipulated as follows:
357 (func LIST): Returns VALUE1
358 (setf (func LIST) NEW_VALUE1): Replaces VALUE1 with NEW_VALUE1."
359 `(progn (defmacro ,name (category)
360 (list (quote cdr) (list (quote assq)
361 (quote (quote ,prop-name)) category)))
363 (define-setf-method ,name (category)
364 (let* ((--category--temp-- (make-symbol "--category--"))
365 (--value--temp-- (make-symbol "--value--")))
366 (list (list --category--temp--) ; temporary-variables
367 (list category) ; value-forms
368 (list --value--temp--) ; store-variables
369 (let* ((category --category--temp--) ; store-form
370 (value --value--temp--))
371 (list (quote gnus-agent-cat-set-property)
373 (quote (quote ,prop-name))
375 (list (quote ,name) --category--temp--) ; access-form
379 (defmacro gnus-agent-cat-name (category)
382 (gnus-agent-cat-defaccessor
383 gnus-agent-cat-days-until-old agent-days-until-old)
384 (gnus-agent-cat-defaccessor
385 gnus-agent-cat-enable-expiration agent-enable-expiration)
386 (gnus-agent-cat-defaccessor
387 gnus-agent-cat-groups agent-groups)
388 (gnus-agent-cat-defaccessor
389 gnus-agent-cat-high-score agent-high-score)
390 (gnus-agent-cat-defaccessor
391 gnus-agent-cat-length-when-long agent-long-article)
392 (gnus-agent-cat-defaccessor
393 gnus-agent-cat-length-when-short agent-short-article)
394 (gnus-agent-cat-defaccessor
395 gnus-agent-cat-low-score agent-low-score)
396 (gnus-agent-cat-defaccessor
397 gnus-agent-cat-predicate agent-predicate)
398 (gnus-agent-cat-defaccessor
399 gnus-agent-cat-score-file agent-score)
400 (gnus-agent-cat-defaccessor
401 gnus-agent-cat-enable-undownloaded-faces agent-enable-undownloaded-faces)
404 ;; This form is equivalent to defsetf except that it calls make-symbol
405 ;; whereas defsetf calls gensym (Using gensym creates a run-time
406 ;; dependency on the CL library).
409 (define-setf-method gnus-agent-cat-groups (category)
410 (let* ((--category--temp-- (make-symbol "--category--"))
411 (--groups--temp-- (make-symbol "--groups--")))
412 (list (list --category--temp--)
414 (list --groups--temp--)
415 (let* ((category --category--temp--)
416 (groups --groups--temp--))
417 (list (quote gnus-agent-set-cat-groups) category groups))
418 (list (quote gnus-agent-cat-groups) --category--temp--))))
421 (defun gnus-agent-set-cat-groups (category groups)
422 (unless (eq groups 'ignore)
424 (old-g (gnus-agent-cat-groups category)))
425 (cond ((eq new-g old-g)
426 ;; gnus-agent-add-group is fiddling with the group
427 ;; list. Still, Im done.
430 ((eq new-g (cdr old-g))
431 ;; gnus-agent-add-group is fiddling with the group list
432 (setcdr (or (assq 'agent-groups category)
433 (let ((cell (cons 'agent-groups nil)))
434 (setcdr category (cons cell (cdr category)))
437 (let ((groups groups))
439 (let* ((group (pop groups))
440 (old-category (gnus-group-category group)))
441 (if (eq category old-category)
443 (setf (gnus-agent-cat-groups old-category)
444 (delete group (gnus-agent-cat-groups
446 ;; Purge cache as preceeding loop invalidated it.
447 (setq gnus-category-group-cache nil))
449 (setcdr (or (assq 'agent-groups category)
450 (let ((cell (cons 'agent-groups nil)))
451 (setcdr category (cons cell (cdr category)))
454 (defsubst gnus-agent-cat-make (name &optional default-agent-predicate)
455 (list name `(agent-predicate . ,(or default-agent-predicate 'false))))
457 (defun gnus-agent-read-group ()
458 "Read a group name in the minibuffer, with completion."
459 (let ((def (or (gnus-group-group-name) gnus-newsgroup-name)))
461 (setq def (gnus-group-decoded-name def)))
462 (gnus-group-completing-read nil nil t nil nil def)))
464 ;;; Fetching setup functions.
466 (defun gnus-agent-start-fetch ()
467 "Initialize data structures for efficient fetching."
468 (gnus-agent-create-buffer))
470 (defun gnus-agent-stop-fetch ()
471 "Save all data structures and clean up."
472 (setq gnus-agent-spam-hashtb nil)
473 (with-current-buffer nntp-server-buffer
476 (defmacro gnus-agent-with-fetch (&rest forms)
479 (let ((gnus-agent-fetching t))
480 (gnus-agent-start-fetch)
482 (gnus-agent-stop-fetch)))
484 (put 'gnus-agent-with-fetch 'lisp-indent-function 0)
485 (put 'gnus-agent-with-fetch 'edebug-form-spec '(body))
487 (defmacro gnus-agent-append-to-list (tail value)
488 `(setq ,tail (setcdr ,tail (cons ,value nil))))
490 (defmacro gnus-agent-message (level &rest args)
491 `(if (<= ,level gnus-verbose)
498 (defvar gnus-agent-mode-hook nil
499 "Hook run when installing agent mode.")
501 (defvar gnus-agent-mode nil)
502 (defvar gnus-agent-mode-status '(gnus-agent-mode " Plugged"))
504 (defun gnus-agent-mode ()
505 "Minor mode for providing a agent support in Gnus buffers."
506 (let* ((buffer (progn (string-match "^gnus-\\(.*\\)-mode$"
507 (symbol-name major-mode))
508 (match-string 1 (symbol-name major-mode))))
509 (mode (intern (format "gnus-agent-%s-mode" buffer))))
510 (set (make-local-variable 'gnus-agent-mode) t)
512 (set (make-local-variable mode) t)
514 (when (gnus-visual-p 'agent-menu 'menu)
515 (funcall (intern (format "gnus-agent-%s-make-menu-bar" buffer))))
516 (unless (assq 'gnus-agent-mode minor-mode-alist)
517 (push gnus-agent-mode-status minor-mode-alist))
518 (unless (assq mode minor-mode-map-alist)
519 (push (cons mode (symbol-value (intern (format "gnus-agent-%s-mode-map"
521 minor-mode-map-alist))
522 (when (eq major-mode 'gnus-group-mode)
523 (let ((init-plugged gnus-plugged)
524 (gnus-agent-go-online nil))
525 ;; g-a-t-p does nothing when gnus-plugged isn't changed.
526 ;; Therefore, make certain that the current value does not
527 ;; match the desired initial value.
528 (setq gnus-plugged :unknown)
529 (gnus-agent-toggle-plugged init-plugged)))
530 (gnus-run-hooks 'gnus-agent-mode-hook
531 (intern (format "gnus-agent-%s-mode-hook" buffer)))))
533 (defvar gnus-agent-group-mode-map (make-sparse-keymap))
534 (gnus-define-keys gnus-agent-group-mode-map
535 "Ju" gnus-agent-fetch-groups
536 "Jc" gnus-enter-category-buffer
537 "Jj" gnus-agent-toggle-plugged
538 "Js" gnus-agent-fetch-session
539 "JY" gnus-agent-synchronize-flags
540 "JS" gnus-group-send-queue
541 "Ja" gnus-agent-add-group
542 "Jr" gnus-agent-remove-group
543 "Jo" gnus-agent-toggle-group-plugged)
545 (defun gnus-agent-group-make-menu-bar ()
546 (unless (boundp 'gnus-agent-group-menu)
548 gnus-agent-group-menu gnus-agent-group-mode-map ""
550 ["Toggle plugged" gnus-agent-toggle-plugged t]
551 ["Toggle group plugged" gnus-agent-toggle-group-plugged t]
552 ["List categories" gnus-enter-category-buffer t]
553 ["Add (current) group to category" gnus-agent-add-group t]
554 ["Remove (current) group from category" gnus-agent-remove-group t]
555 ["Send queue" gnus-group-send-queue gnus-plugged]
557 ["All" gnus-agent-fetch-session gnus-plugged]
558 ["Group" gnus-agent-fetch-group gnus-plugged])
559 ["Synchronize flags" gnus-agent-synchronize-flags t]
562 (defvar gnus-agent-summary-mode-map (make-sparse-keymap))
563 (gnus-define-keys gnus-agent-summary-mode-map
564 "Jj" gnus-agent-toggle-plugged
565 "Ju" gnus-agent-summary-fetch-group
566 "JS" gnus-agent-fetch-group
567 "Js" gnus-agent-summary-fetch-series
568 "J#" gnus-agent-mark-article
569 "J\M-#" gnus-agent-unmark-article
570 "@" gnus-agent-toggle-mark
571 "Jc" gnus-agent-catchup)
573 (defun gnus-agent-summary-make-menu-bar ()
574 (unless (boundp 'gnus-agent-summary-menu)
576 gnus-agent-summary-menu gnus-agent-summary-mode-map ""
578 ["Toggle plugged" gnus-agent-toggle-plugged t]
579 ["Mark as downloadable" gnus-agent-mark-article t]
580 ["Unmark as downloadable" gnus-agent-unmark-article t]
581 ["Toggle mark" gnus-agent-toggle-mark t]
582 ["Fetch downloadable" gnus-agent-summary-fetch-group t]
583 ["Catchup undownloaded" gnus-agent-catchup t]))))
585 (defvar gnus-agent-server-mode-map (make-sparse-keymap))
586 (gnus-define-keys gnus-agent-server-mode-map
587 "Jj" gnus-agent-toggle-plugged
588 "Ja" gnus-agent-add-server
589 "Jr" gnus-agent-remove-server)
591 (defun gnus-agent-server-make-menu-bar ()
592 (unless (boundp 'gnus-agent-server-menu)
594 gnus-agent-server-menu gnus-agent-server-mode-map ""
596 ["Toggle plugged" gnus-agent-toggle-plugged t]
597 ["Add" gnus-agent-add-server t]
598 ["Remove" gnus-agent-remove-server t]))))
600 (defun gnus-agent-make-mode-line-string (string mouse-button mouse-func)
601 (if (and (fboundp 'propertize)
602 (fboundp 'make-mode-line-mouse-map))
603 (propertize string 'local-map
604 (make-mode-line-mouse-map mouse-button mouse-func)
606 (if (and (featurep 'xemacs)
607 ;; XEmacs' `facep' only checks for a face
608 ;; object, not for a face name, so it's useless
609 ;; to check with `facep'.
610 (find-face 'modeline))
612 'mode-line-highlight))
615 (defun gnus-agent-toggle-plugged (set-to)
616 "Toggle whether Gnus is unplugged or not."
617 (interactive (list (not gnus-plugged)))
618 (cond ((eq set-to gnus-plugged)
621 (setq gnus-plugged set-to)
622 (gnus-run-hooks 'gnus-agent-plugged-hook)
623 (setcar (cdr gnus-agent-mode-status)
624 (gnus-agent-make-mode-line-string " Plugged"
626 'gnus-agent-toggle-plugged))
627 (gnus-agent-go-online gnus-agent-go-online))
629 (gnus-agent-close-connections)
630 (setq gnus-plugged set-to)
631 (gnus-run-hooks 'gnus-agent-unplugged-hook)
632 (setcar (cdr gnus-agent-mode-status)
633 (gnus-agent-make-mode-line-string " Unplugged"
635 'gnus-agent-toggle-plugged))))
636 (set-buffer-modified-p t))
638 (defmacro gnus-agent-while-plugged (&rest body)
639 `(let ((original-gnus-plugged gnus-plugged))
641 (progn (gnus-agent-toggle-plugged t)
643 (gnus-agent-toggle-plugged original-gnus-plugged))))
645 (put 'gnus-agent-while-plugged 'lisp-indent-function 0)
646 (put 'gnus-agent-while-plugged 'edebug-form-spec '(body))
648 (defun gnus-agent-close-connections ()
649 "Close all methods covered by the Gnus agent."
650 (let ((methods (gnus-agent-covered-methods)))
652 (gnus-close-server (pop methods)))))
655 (defun gnus-unplugged ()
656 "Start Gnus unplugged."
658 (setq gnus-plugged nil)
662 (defun gnus-plugged ()
663 "Start Gnus plugged."
665 (setq gnus-plugged t)
669 (defun gnus-slave-unplugged (&optional arg)
670 "Read news as a slave unplugged."
672 (setq gnus-plugged nil)
673 (gnus arg nil 'slave))
676 (defun gnus-agentize ()
677 "Allow Gnus to be an offline newsreader.
679 The gnus-agentize function is now called internally by gnus when
680 gnus-agent is set. If you wish to avoid calling gnus-agentize,
681 customize gnus-agent to nil.
683 This will modify the `gnus-setup-news-hook', and
684 `message-send-mail-real-function' variables, and install the Gnus agent
685 minor mode in all Gnus buffers."
688 (add-hook 'gnus-setup-news-hook 'gnus-agent-queue-setup)
689 (unless gnus-agent-send-mail-function
690 (setq gnus-agent-send-mail-function
691 (or message-send-mail-real-function
692 (function (lambda () (funcall message-send-mail-function))))
693 message-send-mail-real-function 'gnus-agent-send-mail))
695 ;; If the servers file doesn't exist, auto-agentize some servers and
696 ;; save the servers file so this auto-agentizing isn't invoked
698 (unless (file-exists-p (nnheader-concat gnus-agent-directory "lib/servers"))
699 (gnus-message 3 "First time agent user, agentizing remote groups...")
701 (lambda (server-or-method)
702 (let ((method (gnus-server-to-method server-or-method)))
703 (when (memq (car method)
704 gnus-agent-auto-agentize-methods)
705 (push (gnus-method-to-server method)
706 gnus-agent-covered-methods)
707 (setq gnus-agent-method-p-cache nil))))
708 (cons gnus-select-method gnus-secondary-select-methods))
709 (gnus-agent-write-servers)))
711 (defun gnus-agent-queue-setup (&optional group-name)
712 "Make sure the queue group exists.
713 Optional arg GROUP-NAME allows to specify another group."
714 (unless (gnus-gethash (format "nndraft:%s" (or group-name "queue"))
716 (gnus-request-create-group (or group-name "queue") '(nndraft ""))
717 (let ((gnus-level-default-subscribed 1))
718 (gnus-subscribe-group (format "nndraft:%s" (or group-name "queue"))
720 (gnus-group-set-parameter
721 (format "nndraft:%s" (or group-name "queue"))
722 'gnus-dummy '((gnus-draft-mode)))))
724 (defun gnus-agent-send-mail ()
725 (if (or (not gnus-agent-queue-mail)
726 (and gnus-plugged (not (eq gnus-agent-queue-mail 'always))))
727 (funcall gnus-agent-send-mail-function)
728 (goto-char (point-min))
730 (concat "^" (regexp-quote mail-header-separator) "\n"))
732 (gnus-agent-insert-meta-information 'mail)
733 (gnus-request-accept-article "nndraft:queue" nil t t)))
735 (defun gnus-agent-insert-meta-information (type &optional method)
736 "Insert meta-information into the message that says how it's to be posted.
737 TYPE can be either `mail' or `news'. If the latter, then METHOD can
740 (message-remove-header gnus-agent-meta-information-header)
741 (goto-char (point-min))
742 (insert gnus-agent-meta-information-header ": "
743 (symbol-name type) " " (format "%S" method)
746 (while (search-backward "\n" nil t)
747 (replace-match "\\n" t t))))
749 (defun gnus-agent-restore-gcc ()
750 "Restore GCC field from saved header."
752 (goto-char (point-min))
753 (while (re-search-forward
754 (concat "^" (regexp-quote gnus-agent-gcc-header) ":") nil t)
755 (replace-match "Gcc:" 'fixedcase))))
757 (defun gnus-agent-any-covered-gcc ()
759 (message-narrow-to-headers)
760 (let* ((gcc (mail-fetch-field "gcc" nil t))
762 (mapcar 'gnus-inews-group-method
763 (message-unquote-tokens
764 (message-tokenize-header
767 (while (and (not covered) methods)
768 (setq covered (gnus-agent-method-p (car methods))
769 methods (cdr methods)))
773 (defun gnus-agent-possibly-save-gcc ()
774 "Save GCC if Gnus is unplugged."
775 (when (and (not gnus-plugged) (gnus-agent-any-covered-gcc))
777 (goto-char (point-min))
778 (let ((case-fold-search t))
779 (while (re-search-forward "^gcc:" nil t)
780 (replace-match (concat gnus-agent-gcc-header ":") 'fixedcase))))))
782 (defun gnus-agent-possibly-do-gcc ()
783 "Do GCC if Gnus is plugged."
784 (when (or gnus-plugged (not (gnus-agent-any-covered-gcc)))
785 (gnus-inews-do-gcc)))
788 ;;; Group mode commands
791 (defun gnus-agent-fetch-groups (n)
792 "Put all new articles in the current groups into the Agent."
795 (error "Groups can't be fetched when Gnus is unplugged"))
796 (gnus-group-iterate n 'gnus-agent-fetch-group))
798 (defun gnus-agent-fetch-group (&optional group)
799 "Put all new articles in GROUP into the Agent."
800 (interactive (list (gnus-group-group-name)))
801 (setq group (or group gnus-newsgroup-name))
803 (error "No group on the current line"))
805 (gnus-agent-while-plugged
806 (let ((gnus-command-method (gnus-find-method-for-group group)))
807 (gnus-agent-with-fetch
808 (gnus-agent-fetch-group-1 group gnus-command-method)
809 (gnus-message 5 "Fetching %s...done" group)))))
811 (defun gnus-agent-add-group (category arg)
812 "Add the current group to an agent category."
816 (gnus-completing-read
818 (mapcar (lambda (cat) (symbol-name (car cat)))
822 (let ((cat (assq category gnus-category-alist))
824 (gnus-group-iterate arg
826 (when (gnus-agent-cat-groups (setq c (gnus-group-category group)))
827 (setf (gnus-agent-cat-groups c)
828 (delete group (gnus-agent-cat-groups c))))
829 (push group groups)))
830 (setf (gnus-agent-cat-groups cat)
831 (nconc (gnus-agent-cat-groups cat) groups))
832 (gnus-category-write)))
834 (defun gnus-agent-remove-group (arg)
835 "Remove the current group from its agent category, if any."
838 (gnus-group-iterate arg
840 (when (gnus-agent-cat-groups (setq c (gnus-group-category group)))
841 (setf (gnus-agent-cat-groups c)
842 (delete group (gnus-agent-cat-groups c))))))
843 (gnus-category-write)))
845 (defun gnus-agent-synchronize-flags ()
846 "Synchronize unplugged flags with servers."
849 (dolist (gnus-command-method (gnus-agent-covered-methods))
850 (when (file-exists-p (gnus-agent-lib-file "flags"))
851 (gnus-agent-synchronize-flags-server gnus-command-method)))))
853 (defun gnus-agent-possibly-synchronize-flags ()
854 "Synchronize flags according to `gnus-agent-synchronize-flags'."
857 (dolist (gnus-command-method (gnus-agent-covered-methods))
858 (when (eq (gnus-server-status gnus-command-method) 'ok)
859 (gnus-agent-possibly-synchronize-flags-server gnus-command-method)))))
861 (defun gnus-agent-synchronize-flags-server (method)
862 "Synchronize flags set when unplugged for server."
863 (let ((gnus-command-method method)
865 (when (file-exists-p (gnus-agent-lib-file "flags"))
866 (set-buffer (get-buffer-create " *Gnus Agent flag synchronize*"))
868 (nnheader-insert-file-contents (gnus-agent-lib-file "flags"))
869 (cond ((null gnus-plugged)
871 1 "You must be plugged to synchronize flags with server %s"
872 (nth 1 gnus-command-method)))
873 ((null (gnus-check-server gnus-command-method))
875 1 "Couldn't open server %s" (nth 1 gnus-command-method)))
880 (eval (read (current-buffer)))
881 (delete-region bgn (point))))
883 (delete-file (gnus-agent-lib-file "flags")))
885 (let ((file (gnus-agent-lib-file "flags")))
886 (write-region (point-min) (point-max)
887 (gnus-agent-lib-file "flags") nil 'silent)
888 (error "Couldn't set flags from file %s due to %s"
889 file (error-message-string err)))))))
892 (defun gnus-agent-possibly-synchronize-flags-server (method)
893 "Synchronize flags for server according to `gnus-agent-synchronize-flags'."
894 (when (and (file-exists-p (gnus-agent-lib-file "flags"))
895 (or (and gnus-agent-synchronize-flags
896 (not (eq gnus-agent-synchronize-flags 'ask)))
897 (and (eq gnus-agent-synchronize-flags 'ask)
899 (format "Synchronize flags on server `%s'? "
901 (gnus-agent-synchronize-flags-server method)))
904 (defun gnus-agent-rename-group (old-group new-group)
905 "Rename fully-qualified OLD-GROUP as NEW-GROUP.
906 Always updates the agent, even when disabled, as the old agent
907 files would corrupt gnus when the agent was next enabled.
908 Depends upon the caller to determine whether group renaming is
910 (let* ((old-command-method (gnus-find-method-for-group old-group))
911 (old-path (directory-file-name
912 (let (gnus-command-method old-command-method)
913 (gnus-agent-group-pathname old-group))))
914 (new-command-method (gnus-find-method-for-group new-group))
915 (new-path (directory-file-name
916 (let (gnus-command-method new-command-method)
917 (gnus-agent-group-pathname new-group))))
918 (file-name-coding-system nnmail-pathname-coding-system))
919 (gnus-rename-file old-path new-path t)
921 (let* ((old-real-group (gnus-group-real-name old-group))
922 (new-real-group (gnus-group-real-name new-group))
923 (old-active (gnus-agent-get-group-info old-command-method old-real-group)))
924 (gnus-agent-save-group-info old-command-method old-real-group nil)
925 (gnus-agent-save-group-info new-command-method new-real-group old-active)
927 (let ((old-local (gnus-agent-get-local old-group
928 old-real-group old-command-method)))
929 (gnus-agent-set-local old-group
931 old-real-group old-command-method)
932 (gnus-agent-set-local new-group
933 (car old-local) (cdr old-local)
934 new-real-group new-command-method)))))
937 (defun gnus-agent-delete-group (group)
938 "Delete fully-qualified GROUP.
939 Always updates the agent, even when disabled, as the old agent
940 files would corrupt gnus when the agent was next enabled.
941 Depends upon the caller to determine whether group deletion is
943 (let* ((command-method (gnus-find-method-for-group group))
944 (path (directory-file-name
945 (let (gnus-command-method command-method)
946 (gnus-agent-group-pathname group))))
947 (file-name-coding-system nnmail-pathname-coding-system))
948 (gnus-delete-directory path)
950 (let* ((real-group (gnus-group-real-name group)))
951 (gnus-agent-save-group-info command-method real-group nil)
953 (let ((local (gnus-agent-get-local group
954 real-group command-method)))
955 (gnus-agent-set-local group
957 real-group command-method)))))
960 ;;; Server mode commands
963 (defun gnus-agent-add-server ()
964 "Enroll SERVER in the agent program."
966 (let* ((server (gnus-server-server-name))
967 (named-server (gnus-server-named-server))
969 (gnus-server-get-method nil server))))
971 (error "No server on the current line"))
973 (when (gnus-agent-method-p method)
974 (error "Server already in the agent program"))
976 (push named-server gnus-agent-covered-methods)
978 (setq gnus-agent-method-p-cache nil)
979 (gnus-server-update-server server)
980 (gnus-agent-write-servers)
981 (gnus-message 1 "Entered %s into the Agent" server)))
983 (defun gnus-agent-remove-server ()
984 "Remove SERVER from the agent program."
986 (let* ((server (gnus-server-server-name))
987 (named-server (gnus-server-named-server)))
989 (error "No server on the current line"))
991 (unless (member named-server gnus-agent-covered-methods)
992 (error "Server not in the agent program"))
994 (setq gnus-agent-covered-methods
995 (delete named-server gnus-agent-covered-methods)
996 gnus-agent-method-p-cache nil)
998 (gnus-server-update-server server)
999 (gnus-agent-write-servers)
1000 (gnus-message 1 "Removed %s from the agent" server)))
1002 (defun gnus-agent-read-servers ()
1003 "Read the alist of covered servers."
1004 (setq gnus-agent-covered-methods
1005 (gnus-agent-read-file
1006 (nnheader-concat gnus-agent-directory "lib/servers"))
1007 gnus-agent-method-p-cache nil)
1009 ;; I am called so early in start-up that I can not validate server
1010 ;; names. When that is the case, I skip the validation. That is
1011 ;; alright as the gnus startup code calls the validate methods
1013 (if gnus-server-alist
1014 (gnus-agent-read-servers-validate)))
1016 (defun gnus-agent-read-servers-validate ()
1017 (mapcar (lambda (server-or-method)
1018 (let* ((server (if (stringp server-or-method)
1020 (gnus-method-to-server server-or-method)))
1021 (method (gnus-server-to-method server)))
1023 (unless (member server gnus-agent-covered-methods)
1024 (push server gnus-agent-covered-methods)
1025 (setq gnus-agent-method-p-cache nil))
1026 (gnus-message 8 "Ignoring disappeared server `%s'" server))))
1027 (prog1 gnus-agent-covered-methods
1028 (setq gnus-agent-covered-methods nil))))
1030 (defun gnus-agent-read-servers-validate-native (native-method)
1031 (setq gnus-agent-covered-methods
1032 (mapcar (lambda (method)
1033 (if (or (not method)
1034 (equal method native-method))
1036 method)) gnus-agent-covered-methods)))
1038 (defun gnus-agent-write-servers ()
1039 "Write the alist of covered servers."
1040 (gnus-make-directory (nnheader-concat gnus-agent-directory "lib"))
1041 (let ((coding-system-for-write nnheader-file-coding-system)
1042 (file-name-coding-system nnmail-pathname-coding-system))
1043 (with-temp-file (nnheader-concat gnus-agent-directory "lib/servers")
1044 (prin1 gnus-agent-covered-methods
1045 (current-buffer)))))
1048 ;;; Summary commands
1051 (defun gnus-agent-mark-article (n &optional unmark)
1052 "Mark the next N articles as downloadable.
1053 If N is negative, mark backward instead. If UNMARK is non-nil, remove
1054 the mark instead. The difference between N and the actual number of
1055 articles marked is returned."
1057 (let ((backward (< n 0))
1062 (gnus-summary-set-agent-mark
1063 (gnus-summary-article-number) unmark)
1064 (zerop (gnus-summary-next-subject (if backward -1 1) nil t))))
1067 (gnus-message 7 "No more articles"))
1068 (gnus-summary-recenter)
1069 (gnus-summary-position-point)
1072 (defun gnus-agent-unmark-article (n)
1073 "Remove the downloadable mark from the next N articles.
1074 If N is negative, unmark backward instead. The difference between N and
1075 the actual number of articles unmarked is returned."
1077 (gnus-agent-mark-article n t))
1079 (defun gnus-agent-toggle-mark (n)
1080 "Toggle the downloadable mark from the next N articles.
1081 If N is negative, toggle backward instead. The difference between N and
1082 the actual number of articles toggled is returned."
1084 (gnus-agent-mark-article n 'toggle))
1086 (defun gnus-summary-set-agent-mark (article &optional unmark)
1087 "Mark ARTICLE as downloadable. If UNMARK is nil, article is marked.
1088 When UNMARK is t, the article is unmarked. For any other value, the
1089 article's mark is toggled."
1090 (let ((unmark (cond ((eq nil unmark)
1095 (memq article gnus-newsgroup-downloadable)))))
1096 (when (gnus-summary-goto-subject article nil t)
1097 (gnus-summary-update-mark
1100 (setq gnus-newsgroup-downloadable
1101 (delq article gnus-newsgroup-downloadable))
1102 (gnus-article-mark article))
1103 (setq gnus-newsgroup-downloadable
1104 (gnus-add-to-sorted-list gnus-newsgroup-downloadable article))
1105 gnus-downloadable-mark)
1109 (defun gnus-agent-get-undownloaded-list ()
1110 "Construct list of articles that have not been downloaded."
1111 (let ((gnus-command-method (gnus-find-method-for-group gnus-newsgroup-name)))
1112 (when (set (make-local-variable 'gnus-newsgroup-agentized)
1113 (gnus-agent-method-p gnus-command-method))
1114 (let* ((alist (gnus-agent-load-alist gnus-newsgroup-name))
1115 (headers (sort (mapcar (lambda (h)
1116 (mail-header-number h))
1117 gnus-newsgroup-headers) '<))
1118 (cached (and gnus-use-cache gnus-newsgroup-cached))
1119 (undownloaded (list nil))
1120 (tail-undownloaded undownloaded)
1121 (unfetched (list nil))
1122 (tail-unfetched unfetched))
1123 (while (and alist headers)
1124 (let ((a (caar alist))
1127 ;; Ignore IDs in the alist that are not being
1128 ;; displayed in the summary.
1129 (setq alist (cdr alist)))
1131 ;; Headers that are not in the alist should be
1132 ;; fictious (see nnagent-retrieve-headers); they
1133 ;; imply that this article isn't in the agent.
1134 (gnus-agent-append-to-list tail-undownloaded h)
1135 (gnus-agent-append-to-list tail-unfetched h)
1136 (setq headers (cdr headers)))
1138 (setq alist (cdr alist))
1139 (setq headers (cdr headers))
1140 nil ; ignore already downloaded
1143 (setq alist (cdr alist))
1144 (setq headers (cdr headers))
1146 ;; This article isn't in the agent. Check to see
1147 ;; if it is in the cache. If it is, it's been
1149 (while (and cached (< (car cached) a))
1150 (setq cached (cdr cached)))
1151 (unless (equal a (car cached))
1152 (gnus-agent-append-to-list tail-undownloaded a))))))
1155 (let ((num (pop headers)))
1156 (gnus-agent-append-to-list tail-undownloaded num)
1157 (gnus-agent-append-to-list tail-unfetched num)))
1159 (setq gnus-newsgroup-undownloaded (cdr undownloaded)
1160 gnus-newsgroup-unfetched (cdr unfetched))))))
1162 (defun gnus-agent-catchup ()
1163 "Mark as read all unhandled articles.
1164 An article is unhandled if it is neither cached, nor downloaded, nor
1168 (let ((articles gnus-newsgroup-undownloaded))
1169 (when (or gnus-newsgroup-downloadable
1170 gnus-newsgroup-cached)
1171 (setq articles (gnus-sorted-ndifference
1172 (gnus-sorted-ndifference
1173 (gnus-copy-sequence articles)
1174 gnus-newsgroup-downloadable)
1175 gnus-newsgroup-cached)))
1178 (gnus-summary-mark-article
1179 (pop articles) gnus-catchup-mark)))
1180 (gnus-summary-position-point)))
1182 (defun gnus-agent-summary-fetch-series ()
1184 (when gnus-newsgroup-processable
1185 (setq gnus-newsgroup-downloadable
1186 (let* ((dl gnus-newsgroup-downloadable)
1187 (processable (sort (gnus-copy-sequence gnus-newsgroup-processable) '<))
1188 (gnus-newsgroup-downloadable processable))
1189 (gnus-agent-summary-fetch-group)
1191 ;; For each article that I processed that is no longer
1192 ;; undownloaded, remove its processable mark.
1194 (mapc #'gnus-summary-remove-process-mark
1195 (gnus-sorted-ndifference gnus-newsgroup-processable gnus-newsgroup-undownloaded))
1197 ;; The preceeding call to (gnus-agent-summary-fetch-group)
1198 ;; updated the temporary gnus-newsgroup-downloadable to
1199 ;; remove each article successfully fetched. Now, I
1200 ;; update the real gnus-newsgroup-downloadable to only
1201 ;; include undownloaded articles.
1202 (gnus-sorted-ndifference dl (gnus-sorted-ndifference processable gnus-newsgroup-undownloaded))))))
1204 (defun gnus-agent-summary-fetch-group (&optional all)
1205 "Fetch the downloadable articles in the group.
1206 Optional arg ALL, if non-nil, means to fetch all articles."
1209 (if all gnus-newsgroup-articles
1210 gnus-newsgroup-downloadable))
1211 (gnus-command-method (gnus-find-method-for-group gnus-newsgroup-name))
1213 (gnus-agent-while-plugged
1215 (error "No articles to download"))
1216 (gnus-agent-with-fetch
1217 (setq gnus-newsgroup-undownloaded
1218 (gnus-sorted-ndifference
1219 gnus-newsgroup-undownloaded
1220 (setq fetched-articles
1221 (gnus-agent-fetch-articles
1222 gnus-newsgroup-name articles)))))
1224 (dolist (article articles)
1225 (let ((was-marked-downloadable
1226 (memq article gnus-newsgroup-downloadable)))
1227 (cond (gnus-agent-mark-unread-after-downloaded
1228 (setq gnus-newsgroup-downloadable
1229 (delq article gnus-newsgroup-downloadable))
1231 (gnus-summary-mark-article article gnus-unread-mark))
1232 (was-marked-downloadable
1233 (gnus-summary-set-agent-mark article t)))
1234 (when (gnus-summary-goto-subject article nil t)
1235 (gnus-summary-update-download-mark article))))))
1238 (defun gnus-agent-fetch-selected-article ()
1239 "Fetch the current article as it is selected.
1240 This can be added to `gnus-select-article-hook' or
1241 `gnus-mark-article-hook'."
1242 (let ((gnus-command-method gnus-current-select-method))
1243 (when (and gnus-plugged (gnus-agent-method-p gnus-command-method))
1244 (when (gnus-agent-fetch-articles
1246 (list gnus-current-article))
1247 (setq gnus-newsgroup-undownloaded
1248 (delq gnus-current-article gnus-newsgroup-undownloaded))
1249 (gnus-summary-update-download-mark gnus-current-article)))))
1252 ;;; Internal functions
1255 (defun gnus-agent-synchronize-group-flags (group actions server)
1256 "Update a plugged group by performing the indicated actions."
1257 (let* ((gnus-command-method (gnus-server-to-method server))
1259 ;; This initializer is required as gnus-request-set-mark
1260 ;; calls gnus-group-real-name to strip off the host name
1261 ;; before calling the backend. Now that the backend is
1262 ;; trying to call gnus-request-set-mark, I have to
1263 ;; reconstruct the original group name.
1264 (or (gnus-get-info group)
1266 (setq group (gnus-group-full-name
1267 group gnus-command-method))))))
1268 (gnus-request-set-mark group actions)
1271 (dolist (action actions)
1272 (let ((range (nth 0 action))
1273 (what (nth 1 action))
1274 (marks (nth 2 action)))
1275 (dolist (mark marks)
1276 (cond ((eq mark 'read)
1279 (funcall (if (eq what 'add)
1281 'gnus-remove-from-range)
1282 (gnus-info-read info)
1284 (gnus-get-unread-articles-in-group
1286 (gnus-active (gnus-info-group info))))
1287 ((memq mark '(tick))
1288 (let ((info-marks (assoc mark (gnus-info-marks info))))
1290 (gnus-info-set-marks info (cons (setq info-marks (list mark)) (gnus-info-marks info))))
1291 (setcdr info-marks (funcall (if (eq what 'add)
1293 'gnus-remove-from-range)
1297 ;;Marks can be synchronized at any time by simply toggling from
1298 ;;unplugged to plugged. If that is what is happening right now, make
1299 ;;sure that the group buffer is up to date.
1300 (when (gnus-buffer-live-p gnus-group-buffer)
1301 (gnus-group-update-group group t)))
1304 (defun gnus-agent-save-active (method)
1305 (when (gnus-agent-method-p method)
1306 (let* ((gnus-command-method method)
1307 (new (gnus-make-hashtable (count-lines (point-min) (point-max))))
1308 (file (gnus-agent-lib-file "active")))
1309 (gnus-active-to-gnus-format nil new)
1310 (gnus-agent-write-active file new)
1312 (let ((nnheader-file-coding-system gnus-agent-file-coding-system))
1313 (nnheader-insert-file-contents file)))))
1315 (defun gnus-agent-write-active (file new)
1316 (gnus-make-directory (file-name-directory file))
1317 (let ((nnmail-active-file-coding-system gnus-agent-file-coding-system))
1318 ;; The hashtable contains real names of groups. However, do NOT
1319 ;; add the foreign server prefix as gnus-active-to-gnus-format
1320 ;; will add it while reading the file.
1321 (gnus-write-active-file file new nil)))
1324 (defun gnus-agent-possibly-alter-active (group active &optional info)
1325 "Possibly expand a group's active range to include articles
1326 downloaded into the agent."
1327 (let* ((gnus-command-method (or gnus-command-method
1328 (gnus-find-method-for-group group))))
1329 (when (gnus-agent-method-p gnus-command-method)
1330 (let* ((local (gnus-agent-get-local group))
1331 (active-min (or (car active) 0))
1332 (active-max (or (cdr active) 0))
1333 (agent-min (or (car local) active-min))
1334 (agent-max (or (cdr local) active-max)))
1336 (when (< agent-min active-min)
1337 (setcar active agent-min))
1339 (when (> agent-max active-max)
1340 (setcdr active agent-max))
1342 (when (and info (< agent-max (- active-min 100)))
1343 ;; I'm expanding the active range by such a large amount
1344 ;; that there is a gap of more than 100 articles between the
1345 ;; last article known to the agent and the first article
1346 ;; currently available on the server. This gap contains
1347 ;; articles that have been lost, mark them as read so that
1348 ;; gnus doesn't waste resources trying to fetch them.
1350 ;; NOTE: I don't do this for smaller gaps (< 100) as I don't
1351 ;; want to modify the local file everytime someone restarts
1352 ;; gnus. The small gap will cause a tiny performance hit
1353 ;; when gnus tries, and fails, to retrieve the articles.
1354 ;; Still that should be smaller than opening a buffer,
1355 ;; printing this list to the buffer, and then writing it to a
1358 (let ((read (gnus-info-read info)))
1363 (list (cons (1+ agent-max)
1364 (1- active-min))))))
1366 ;; Lie about the agent's local range for this group to
1367 ;; disable the set read each time this server is opened.
1368 ;; NOTE: Opening this group will restore the valid local
1369 ;; range but it will also expand the local range to
1370 ;; incompass the new active range.
1371 (gnus-agent-set-local group agent-min (1- active-min)))))))
1373 (defun gnus-agent-save-group-info (method group active)
1374 "Update a single group's active range in the agent's copy of the server's active file."
1375 (when (gnus-agent-method-p method)
1376 (let* ((gnus-command-method (or method gnus-command-method))
1377 (coding-system-for-write nnheader-file-coding-system)
1378 (file-name-coding-system nnmail-pathname-coding-system)
1379 (file (gnus-agent-lib-file "active"))
1380 oactive-min oactive-max)
1381 (gnus-make-directory (file-name-directory file))
1382 (with-temp-file file
1383 ;; Emacs got problem to match non-ASCII group in multibyte buffer.
1384 (mm-disable-multibyte)
1385 (when (file-exists-p file)
1386 (nnheader-insert-file-contents file)
1388 (goto-char (point-min))
1389 (when (re-search-forward
1390 (concat "^" (regexp-quote group) " ") nil t)
1392 (setq oactive-max (read (current-buffer)) ;; max
1393 oactive-min (read (current-buffer)))) ;; min
1394 (gnus-delete-line)))
1396 (insert (format "%S %d %d y\n" (intern group)
1397 (max (or oactive-max (cdr active)) (cdr active))
1398 (min (or oactive-min (car active)) (car active))))
1399 (goto-char (point-max))
1400 (while (search-backward "\\." nil t)
1401 (delete-char 1)))))))
1403 (defun gnus-agent-get-group-info (method group)
1404 "Get a single group's active range in the agent's copy of the server's active file."
1405 (when (gnus-agent-method-p method)
1406 (let* ((gnus-command-method (or method gnus-command-method))
1407 (coding-system-for-write nnheader-file-coding-system)
1408 (file-name-coding-system nnmail-pathname-coding-system)
1409 (file (gnus-agent-lib-file "active"))
1410 oactive-min oactive-max)
1411 (gnus-make-directory (file-name-directory file))
1413 ;; Emacs got problem to match non-ASCII group in multibyte buffer.
1414 (mm-disable-multibyte)
1415 (when (file-exists-p file)
1416 (nnheader-insert-file-contents file)
1418 (goto-char (point-min))
1419 (when (re-search-forward
1420 (concat "^" (regexp-quote group) " ") nil t)
1422 (setq oactive-max (read (current-buffer)) ;; max
1423 oactive-min (read (current-buffer))) ;; min
1424 (cons oactive-min oactive-max))))))))
1426 (defvar gnus-agent-decoded-group-names nil
1427 "Alist of non-ASCII group names and decoded ones.")
1429 (defun gnus-agent-decoded-group-name (group)
1430 "Return a decoded group name of GROUP."
1431 (or (cdr (assoc group gnus-agent-decoded-group-names))
1432 (if (string-match "[^\000-\177]" group)
1433 (let ((decoded (gnus-group-decoded-name group)))
1434 (push (cons group decoded) gnus-agent-decoded-group-names)
1438 (defun gnus-agent-group-path (group)
1439 "Translate GROUP into a file name."
1441 ;; NOTE: This is what nnmail-group-pathname does as of Apr 2003.
1442 ;; The two methods must be kept synchronized, which is why
1443 ;; gnus-agent-group-pathname was added.
1446 (nnheader-translate-file-chars
1447 (nnheader-replace-duplicate-chars-in-string
1448 (nnheader-replace-chars-in-string
1449 (gnus-group-real-name (gnus-agent-decoded-group-name group))
1452 (if (or nnmail-use-long-file-names
1453 (file-directory-p (expand-file-name group (gnus-agent-directory))))
1455 (nnheader-replace-chars-in-string group ?. ?/)))
1457 (defun gnus-agent-group-pathname (group)
1458 "Translate GROUP into a file name."
1459 ;; nnagent uses nnmail-group-pathname to read articles while
1460 ;; unplugged. The agent must, therefore, use the same directory
1462 (nnmail-group-pathname
1463 (gnus-group-real-name (gnus-agent-decoded-group-name group))
1464 (if gnus-command-method
1465 (gnus-agent-directory)
1466 (let ((gnus-command-method (gnus-find-method-for-group group)))
1467 (gnus-agent-directory)))))
1469 (defun gnus-agent-get-function (method)
1470 (if (gnus-online method)
1475 (defun gnus-agent-covered-methods ()
1476 "Return the subset of methods that are covered by the agent."
1477 (delq nil (mapcar #'gnus-server-to-method gnus-agent-covered-methods)))
1479 ;;; History functions
1481 (defun gnus-agent-history-buffer ()
1482 (cdr (assoc (gnus-agent-method) gnus-agent-history-buffers)))
1484 (defun gnus-agent-open-history ()
1486 (push (cons (gnus-agent-method)
1487 (set-buffer (gnus-get-buffer-create
1488 (format " *Gnus agent %s history*"
1489 (gnus-agent-method)))))
1490 gnus-agent-history-buffers)
1491 (mm-disable-multibyte) ;; everything is binary
1494 (let ((file (gnus-agent-lib-file "history")))
1495 (when (file-exists-p file)
1496 (nnheader-insert-file-contents file))
1497 (set (make-local-variable 'gnus-agent-file-name) file))))
1499 (defun gnus-agent-close-history ()
1500 (when (gnus-buffer-live-p gnus-agent-current-history)
1501 (kill-buffer gnus-agent-current-history)
1502 (setq gnus-agent-history-buffers
1503 (delq (assoc (gnus-agent-method) gnus-agent-history-buffers)
1504 gnus-agent-history-buffers))))
1510 (defun gnus-agent-fetch-articles (group articles)
1511 "Fetch ARTICLES from GROUP and put them into the Agent."
1513 (gnus-agent-load-alist group)
1514 (let* ((alist gnus-agent-article-alist)
1515 (headers (if (< (length articles) 2) nil gnus-newsgroup-headers))
1516 (selected-sets (list nil))
1517 (current-set-size 0)
1520 ;; Check each article
1521 (while (setq article (pop articles))
1522 ;; Skip alist entries preceeding this article
1523 (while (> article (or (caar alist) (1+ article)))
1524 (setq alist (cdr alist)))
1526 ;; Prune off articles that we have already fetched.
1527 (unless (and (eq article (caar alist))
1529 ;; Skip headers preceeding this article
1532 (let* ((header (car headers)))
1534 (mail-header-number header)
1536 (setq headers (cdr headers)))
1538 ;; Add this article to the current set
1539 (setcar selected-sets (cons article (car selected-sets)))
1541 ;; Update the set size, when the set is too large start a
1542 ;; new one. I do this after adding the article as I want at
1543 ;; least one article in each set.
1544 (when (< gnus-agent-max-fetch-size
1545 (setq current-set-size
1547 (if (= header-number article)
1548 (let ((char-size (mail-header-chars
1550 (if (<= char-size 0)
1551 ;; The char size was missing/invalid,
1552 ;; assume a worst-case situation of
1553 ;; 65 char/line. If the line count
1554 ;; is missing, arbitrarily assume a
1555 ;; size of 1000 characters.
1556 (max (* 65 (mail-header-lines
1561 (setcar selected-sets (nreverse (car selected-sets)))
1562 (setq selected-sets (cons nil selected-sets)
1563 current-set-size 0))))
1565 (when (or (cdr selected-sets) (car selected-sets))
1566 (let* ((fetched-articles (list nil))
1567 (tail-fetched-articles fetched-articles)
1568 (dir (gnus-agent-group-pathname group))
1569 (date (time-to-days (current-time)))
1570 (case-fold-search t)
1572 (file-name-coding-system nnmail-pathname-coding-system))
1574 (setcar selected-sets (nreverse (car selected-sets)))
1575 (setq selected-sets (nreverse selected-sets))
1577 (gnus-make-directory dir)
1578 (gnus-message 7 "Fetching articles for %s..."
1579 (gnus-agent-decoded-group-name group))
1582 (while (setq articles (pop selected-sets))
1583 ;; Fetch the articles from the backend.
1584 (if (gnus-check-backend-function 'retrieve-articles group)
1585 (setq pos (gnus-retrieve-articles articles group))
1588 (while (setq article (pop articles))
1589 (gnus-message 10 "Fetching article %s for %s..."
1591 (gnus-agent-decoded-group-name group))
1593 (gnus-backlog-request-article group article
1595 (gnus-request-article article group))
1596 (goto-char (point-max))
1597 (push (cons article (point)) pos)
1598 (insert-buffer-substring nntp-server-buffer)))
1600 nntp-server-buffer (point-min) (point-max))
1601 (setq pos (nreverse pos)))))
1602 ;; Then save these articles into the Agent.
1603 (with-current-buffer nntp-server-buffer
1605 (narrow-to-region (cdar pos) (or (cdadr pos) (point-max)))
1606 (goto-char (point-min))
1607 (unless (eobp) ;; Don't save empty articles.
1608 (when (search-forward "\n\n" nil t)
1609 (when (search-backward "\nXrefs: " nil t)
1610 ;; Handle cross posting.
1611 (goto-char (match-end 0)) ; move to end of header name
1612 (skip-chars-forward "^ ") ; skip server name
1613 (skip-chars-forward " ")
1615 (while (looking-at "\\([^: \n]+\\):\\([0-9]+\\) *")
1616 (push (cons (buffer-substring (match-beginning 1)
1619 (buffer-substring (match-beginning 2)
1622 (goto-char (match-end 0)))
1623 (gnus-agent-crosspost crosses (caar pos) date)))
1624 (goto-char (point-min))
1625 (if (not (re-search-forward
1626 "^Message-ID: *<\\([^>\n]+\\)>" nil t))
1627 (setq id "No-Message-ID-in-article")
1628 (setq id (buffer-substring
1629 (match-beginning 1) (match-end 1))))
1630 (let ((coding-system-for-write
1631 gnus-agent-file-coding-system))
1632 (write-region (point-min) (point-max)
1633 (concat dir (number-to-string (caar pos)))
1636 (gnus-agent-append-to-list
1637 tail-fetched-articles (caar pos)))
1639 (setq pos (cdr pos)))))
1641 (gnus-agent-save-alist group (cdr fetched-articles) date)
1642 (gnus-agent-update-files-total-fetched-for group (cdr fetched-articles))
1644 (gnus-message 7 ""))
1645 (cdr fetched-articles))))))
1647 (defun gnus-agent-unfetch-articles (group articles)
1648 "Delete ARTICLES that were fetched from GROUP into the agent."
1650 (gnus-agent-with-refreshed-group
1652 (gnus-agent-load-alist group)
1653 (let* ((alist (cons nil gnus-agent-article-alist))
1654 (articles (sort articles #'<))
1655 (next-possibility alist)
1656 (delete-this (pop articles)))
1657 (while (and (cdr next-possibility) delete-this)
1658 (let ((have-this (caar (cdr next-possibility))))
1660 ((< delete-this have-this)
1661 (setq delete-this (pop articles)))
1662 ((= delete-this have-this)
1663 (let ((timestamp (cdar (cdr next-possibility))))
1665 (let* ((file-name (concat (gnus-agent-group-pathname group)
1666 (number-to-string have-this)))
1668 (float (or (and gnus-agent-total-fetched-hashtb
1669 (nth 7 (file-attributes file-name)))
1671 (file-name-coding-system
1672 nnmail-pathname-coding-system))
1673 (delete-file file-name)
1674 (gnus-agent-update-files-total-fetched-for
1675 group (- size-file)))))
1677 (setcdr next-possibility (cddr next-possibility)))
1679 (setq next-possibility (cdr next-possibility))))))
1680 (setq gnus-agent-article-alist (cdr alist))
1681 (gnus-agent-save-alist group)))))
1683 (defun gnus-agent-crosspost (crosses article &optional date)
1684 (setq date (or date t))
1686 (let (gnus-agent-article-alist group alist beg end)
1687 (with-current-buffer gnus-agent-overview-buffer
1688 (when (nnheader-find-nov-line article)
1691 (setq end (progn (forward-line 1) (point)))))
1693 (setq group (caar crosses))
1694 (unless (setq alist (assoc group gnus-agent-group-alist))
1695 (push (setq alist (list group (gnus-agent-load-alist (caar crosses))))
1696 gnus-agent-group-alist))
1697 (setcdr alist (cons (cons (cdar crosses) date) (cdr alist)))
1698 (with-current-buffer (gnus-get-buffer-create
1699 (format " *Gnus agent overview %s*"group))
1700 (when (= (point-max) (point-min))
1701 (push (cons group (current-buffer)) gnus-agent-buffer-alist)
1703 (let ((file-name-coding-system nnmail-pathname-coding-system))
1704 (nnheader-insert-file-contents
1705 (gnus-agent-article-name ".overview" group)))))
1706 (nnheader-find-nov-line (string-to-number (cdar crosses)))
1707 (insert (string-to-number (cdar crosses)))
1708 (insert-buffer-substring gnus-agent-overview-buffer beg end)
1709 (gnus-agent-check-overview-buffer))
1710 (setq crosses (cdr crosses)))))
1712 (defun gnus-agent-backup-overview-buffer ()
1713 (when gnus-newsgroup-name
1714 (let ((root (gnus-agent-article-name ".overview" gnus-newsgroup-name))
1717 (file-name-coding-system nnmail-pathname-coding-system))
1718 (while (file-exists-p
1719 (setq name (concat root "~"
1720 (int-to-string (setq cnt (1+ cnt))) "~"))))
1721 (write-region (point-min) (point-max) name nil 'no-msg)
1722 (gnus-message 1 "Created backup copy of overview in %s." name)))
1725 (defun gnus-agent-check-overview-buffer (&optional buffer)
1726 "Check the overview file given for sanity.
1727 In particular, checks that the file is sorted by article number
1728 and that there are no duplicates."
1733 (set-buffer buffer))
1736 (goto-char (point-min))
1738 (while (< (point) (point-max))
1740 (cur (condition-case nil
1741 (read (current-buffer))
1744 ((or (not (integerp cur))
1745 (not (eq (char-after) ?\t)))
1747 (setq backed-up (gnus-agent-backup-overview-buffer)))
1749 "Overview buffer contains garbage '%s'."
1754 (setq backed-up (gnus-agent-backup-overview-buffer)))
1756 "Duplicate overview line for %d" cur)
1757 (delete-region p (progn (forward-line 1) (point))))
1760 (setq backed-up (gnus-agent-backup-overview-buffer)))
1761 (gnus-message 1 "Overview buffer not sorted!")
1762 (sort-numeric-fields 1 (point-min) (point-max))
1763 (goto-char (point-min))
1766 (setq prev-num cur)))
1767 (forward-line 1)))))))
1769 (defun gnus-agent-flush-server (&optional server-or-method)
1770 "Flush all agent index files for every subscribed group within
1771 the given SERVER-OR-METHOD. When called with nil, the current
1772 value of gnus-command-method identifies the server."
1773 (let* ((gnus-command-method (if server-or-method
1774 (gnus-server-to-method server-or-method)
1775 gnus-command-method))
1776 (alist gnus-newsrc-alist))
1778 (let ((entry (pop alist)))
1779 (when (gnus-methods-equal-p gnus-command-method (gnus-info-method entry))
1780 (gnus-agent-flush-group (gnus-info-group entry)))))))
1782 (defun gnus-agent-flush-group (group)
1783 "Flush the agent's index files such that the GROUP no longer
1784 appears to have any local content. The actual content, the
1785 article files, may then be deleted using gnus-agent-expire-group.
1786 If flushing was a mistake, the gnus-agent-regenerate-group method
1787 provides an undo mechanism by reconstructing the index files from
1789 (interactive (list (gnus-agent-read-group)))
1791 (let* ((gnus-command-method (or gnus-command-method
1792 (gnus-find-method-for-group group)))
1793 (overview (gnus-agent-article-name ".overview" group))
1794 (agentview (gnus-agent-article-name ".agentview" group))
1795 (file-name-coding-system nnmail-pathname-coding-system))
1797 (if (file-exists-p overview)
1798 (delete-file overview))
1799 (if (file-exists-p agentview)
1800 (delete-file agentview))
1802 (gnus-agent-update-view-total-fetched-for group nil gnus-command-method)
1803 (gnus-agent-update-view-total-fetched-for group t gnus-command-method)
1805 ;(gnus-agent-set-local group nil nil)
1806 ;(gnus-agent-save-local t)
1807 (gnus-agent-save-group-info nil group nil)))
1809 (defun gnus-agent-flush-cache ()
1810 "Flush the agent's index files such that the group no longer
1811 appears to have any local content. The actual content, the
1812 article files, is then deleted using gnus-agent-expire-group. The
1813 gnus-agent-regenerate-group method provides an undo mechanism by
1814 reconstructing the index files from the article files."
1817 (let ((file-name-coding-system nnmail-pathname-coding-system))
1818 (while gnus-agent-buffer-alist
1819 (set-buffer (cdar gnus-agent-buffer-alist))
1820 (let ((coding-system-for-write gnus-agent-file-coding-system))
1821 (write-region (point-min) (point-max)
1822 (gnus-agent-article-name ".overview"
1823 (caar gnus-agent-buffer-alist))
1825 (setq gnus-agent-buffer-alist (cdr gnus-agent-buffer-alist)))
1826 (while gnus-agent-group-alist
1827 (with-temp-file (gnus-agent-article-name
1828 ".agentview" (caar gnus-agent-group-alist))
1829 (princ (cdar gnus-agent-group-alist))
1831 (princ 1 (current-buffer))
1833 (setq gnus-agent-group-alist (cdr gnus-agent-group-alist))))))
1836 (defun gnus-agent-find-parameter (group symbol)
1837 "Search for GROUPs SYMBOL in the group's parameters, the group's
1838 topic parameters, the group's category, or the customizable
1839 variables. Returns the first non-nil value found."
1840 (or (gnus-group-find-parameter group symbol t)
1841 (gnus-group-parameter-value (cdr (gnus-group-category group)) symbol t)
1845 '((agent-short-article . gnus-agent-short-article)
1846 (agent-long-article . gnus-agent-long-article)
1847 (agent-low-score . gnus-agent-low-score)
1848 (agent-high-score . gnus-agent-high-score)
1849 (agent-days-until-old . gnus-agent-expire-days)
1850 (agent-enable-expiration
1851 . gnus-agent-enable-expiration)
1852 (agent-predicate . gnus-agent-predicate)))))))
1854 (defun gnus-agent-fetch-headers (group &optional force)
1855 "Fetch interesting headers into the agent. The group's overview
1856 file will be updated to include the headers while a list of available
1857 article numbers will be returned."
1858 (let* ((fetch-all (and gnus-agent-consider-all-articles
1859 ;; Do not fetch all headers if the predicate
1860 ;; implies that we only consider unread articles.
1861 (not (gnus-predicate-implies-unread
1862 (gnus-agent-find-parameter group
1863 'agent-predicate)))))
1864 (articles (if fetch-all
1865 (if gnus-newsgroup-maximum-articles
1866 (let ((active (gnus-active group)))
1867 (gnus-uncompress-range
1868 (cons (max (car active)
1870 gnus-newsgroup-maximum-articles
1873 (gnus-uncompress-range (gnus-active group)))
1874 (gnus-list-of-unread-articles group)))
1875 (gnus-decode-encoded-word-function 'identity)
1876 (gnus-decode-encoded-address-function 'identity)
1877 (file (gnus-agent-article-name ".overview" group))
1878 (file-name-coding-system nnmail-pathname-coding-system))
1881 ;; Add articles with marks to the list of article headers we want to
1882 ;; fetch. Don't fetch articles solely on the basis of a recent or seen
1883 ;; mark, but do fetch recent or seen articles if they have other, more
1884 ;; interesting marks. (We have to fetch articles with boring marks
1885 ;; because otherwise the agent will remove their marks.)
1886 (dolist (arts (gnus-info-marks (gnus-get-info group)))
1887 (unless (memq (car arts) '(seen recent killed cache))
1888 (setq articles (gnus-range-add articles (cdr arts)))))
1889 (setq articles (sort (gnus-uncompress-sequence articles) '<)))
1891 ;; At this point, I have the list of articles to consider for
1892 ;; fetching. This is the list that I'll return to my caller. Some
1893 ;; of these articles may have already been fetched. That's OK as
1894 ;; the fetch article code will filter those out. Internally, I'll
1895 ;; filter this list to just those articles whose headers need to
1897 (let ((articles articles))
1898 ;; Remove known articles.
1899 (when (and (or gnus-agent-cache
1901 (gnus-agent-load-alist group))
1902 ;; Remove articles marked as downloaded.
1904 ;; I want to fetch all headers in the active range.
1905 ;; Therefore, exclude only those headers that are in the
1907 ;; NOTE: This is probably NOT what I want to do after
1908 ;; agent expiration in this group.
1909 (setq articles (gnus-agent-uncached-articles articles group))
1911 ;; I want to only fetch those headers that have never been
1912 ;; fetched. Therefore, exclude all headers that are, or
1913 ;; WERE, in the article alist.
1914 (let ((low (1+ (caar (last gnus-agent-article-alist))))
1915 (high (cdr (gnus-active group))))
1916 ;; Low can be greater than High when the same group is
1917 ;; fetched twice in the same session {The first fetch will
1918 ;; fill the article alist such that (last
1919 ;; gnus-agent-article-alist) equals (cdr (gnus-active
1920 ;; group))}. The addition of one(the 1+ above) then
1921 ;; forces Low to be greater than High. When this happens,
1922 ;; gnus-list-range-intersection returns nil which
1923 ;; indicates that no headers need to be fetched. -- Kevin
1924 (setq articles (gnus-list-range-intersection
1925 articles (list (cons low high)))))))
1928 10 "gnus-agent-fetch-headers: undownloaded articles are '%s'"
1929 (gnus-compress-sequence articles t))
1931 (with-current-buffer nntp-server-buffer
1934 (gnus-message 7 "Fetching headers for %s..."
1935 (gnus-agent-decoded-group-name group))
1938 (gnus-make-directory (nnheader-translate-file-chars
1939 (file-name-directory file) t))
1941 (unless (eq 'nov (gnus-retrieve-headers articles group))
1942 (nnvirtual-convert-headers))
1943 (gnus-agent-check-overview-buffer)
1944 ;; Move these headers to the overview buffer so that
1945 ;; gnus-agent-braid-nov can merge them with the contents
1948 gnus-agent-overview-buffer (point-min) (point-max))
1949 ;; NOTE: Call g-a-brand-nov even when the file does not
1950 ;; exist. As a minimum, it will validate the article
1951 ;; numbers already in the buffer.
1952 (gnus-agent-braid-nov group articles file)
1953 (let ((coding-system-for-write
1954 gnus-agent-file-coding-system))
1955 (gnus-agent-check-overview-buffer)
1956 (write-region (point-min) (point-max) file nil 'silent))
1957 (gnus-agent-update-view-total-fetched-for group t)
1958 (gnus-agent-save-alist group articles nil)
1962 (nnheader-insert-file-contents file)))))
1965 (defsubst gnus-agent-read-article-number ()
1966 "Reads the article number at point. Returns nil when a valid article number can not be read."
1968 ;; It is unfortunate but the read function quietly overflows
1969 ;; integer. As a result, I have to use string operations to test
1970 ;; for overflow BEFORE calling read.
1971 (when (looking-at "[0-9]+\t")
1972 (let ((len (- (match-end 0) (match-beginning 0))))
1974 (read (current-buffer)))
1976 ;; Many 9 digit base-10 numbers can be represented in a 27-bit int
1977 ;; Back convert from int to string to ensure that this is one of them.
1978 (let* ((str1 (buffer-substring (match-beginning 0) (1- (match-end 0))))
1979 (num (read (current-buffer)))
1980 (str2 (int-to-string num)))
1981 (when (equal str1 str2)
1984 (defsubst gnus-agent-copy-nov-line (article)
1985 "Copy the indicated ARTICLE from the overview buffer to the nntp server buffer."
1987 (set-buffer gnus-agent-overview-buffer)
1988 (while (and (not (eobp))
1989 (or (not (setq art (gnus-agent-read-article-number)))
1994 (not (eq article art)))
1995 (set-buffer nntp-server-buffer)
1997 (setq e (progn (forward-line 1) (point)))
1998 (set-buffer nntp-server-buffer)
1999 (insert-buffer-substring gnus-agent-overview-buffer b e))))
2001 (defun gnus-agent-braid-nov (group articles file)
2002 "Merge agent overview data with given file.
2003 Takes unvalidated headers for ARTICLES from
2004 `gnus-agent-overview-buffer' and validated headers from the given
2005 FILE and places the combined valid headers into
2006 `nntp-server-buffer'. This function can be used, when file
2007 doesn't exist, to valid the overview buffer."
2009 (set-buffer gnus-agent-overview-buffer)
2010 (goto-char (point-min))
2011 (set-buffer nntp-server-buffer)
2013 (when (file-exists-p file)
2014 (nnheader-insert-file-contents file))
2015 (goto-char (point-max))
2018 (unless (or (= (point-min) (point-max))
2019 (< (setq last (read (current-buffer))) (car articles)))
2020 ;; Old and new overlap -- We do it the hard way.
2021 (when (nnheader-find-nov-line (car articles))
2022 ;; Replacing existing NOV entry
2023 (delete-region (point) (progn (forward-line 1) (point))))
2024 (gnus-agent-copy-nov-line (pop articles))
2028 (while (let ((art (read (current-buffer))))
2029 (cond ((< art (car articles))
2032 ((= art (car articles))
2035 (point) (progn (forward-line 1) (point)))
2041 (gnus-agent-copy-nov-line (pop articles)))))
2043 (goto-char (point-max))
2045 ;; Append the remaining lines
2048 (set-buffer gnus-agent-overview-buffer)
2049 (setq start (point))
2050 (set-buffer nntp-server-buffer))
2053 (insert-buffer-substring gnus-agent-overview-buffer start)
2056 (setq last (or last -134217728))
2057 (while (catch 'problems
2060 (setq art (gnus-agent-read-article-number))
2062 ;; Bad art num - delete this line
2064 (delete-region (point) (progn (forward-line 1) (point))))
2066 ;; Art num out of order - enable sort
2070 ;; Bad repeat of art number - delete this line
2072 (delete-region (point) (progn (forward-line 1) (point))))
2078 ;; something is seriously wrong as we simply shouldn't see out-of-order data.
2079 ;; First, we'll fix the sort.
2080 (sort-numeric-fields 1 (point-min) (point-max))
2082 ;; but now we have to consider that we may have duplicate rows...
2083 ;; so reset to beginning of file
2084 (goto-char (point-min))
2085 (setq last -134217728)
2087 ;; and throw a code that restarts this scan
2088 (throw 'problems t))
2091 ;; Keeps the compiler from warning about the free variable in
2092 ;; gnus-agent-read-agentview.
2093 (defvar gnus-agent-read-agentview)
2095 (defun gnus-agent-load-alist (group)
2096 "Load the article-state alist for GROUP."
2097 ;; Bind free variable that's used in `gnus-agent-read-agentview'.
2098 (let* ((gnus-agent-read-agentview group)
2099 (file-name-coding-system nnmail-pathname-coding-system)
2100 (agentview (gnus-agent-article-name ".agentview" group)))
2101 (setq gnus-agent-article-alist
2102 (and (file-exists-p agentview)
2103 (gnus-cache-file-contents
2105 'gnus-agent-file-loading-cache
2106 'gnus-agent-read-agentview)))))
2108 (defun gnus-agent-read-agentview (file)
2109 "Load FILE and do a `read' there."
2113 (nnheader-insert-file-contents file)
2114 (goto-char (point-min))
2115 (let ((alist (read (current-buffer)))
2116 (version (condition-case nil (read (current-buffer))
2122 (let ((inhibit-quit t)
2124 (gnus-agent-open-history)
2125 (set-buffer (gnus-agent-history-buffer))
2126 (goto-char (point-min))
2128 (if (and (looking-at
2129 "[^\t\n]+\t\\([0-9]+\\)\t\\([^ \n]+\\) \\([0-9]+\\)")
2130 (string= (match-string 2)
2131 gnus-agent-read-agentview)
2132 (setq entry (assoc (string-to-number (match-string 3)) alist)))
2133 (setcdr entry (string-to-number (match-string 1))))
2135 (gnus-agent-close-history)
2136 (setq changed-version t)))
2138 (setq changed-version (not (= 1 gnus-agent-article-alist-save-format))))
2140 (let (state sequence uncomp)
2142 (setq state (caar alist)
2143 sequence (inline (gnus-uncompress-range (cdar alist)))
2146 (push (cons (pop sequence) state) uncomp)))
2147 (setq alist (sort uncomp 'car-less-than-car)))
2148 (setq changed-version (not (= 2 gnus-agent-article-alist-save-format)))))
2149 (when changed-version
2150 (let ((gnus-agent-article-alist alist))
2151 (gnus-agent-save-alist gnus-agent-read-agentview)))
2153 ((end-of-file file-error)
2154 ;; The agentview file is missing.
2156 ;; If the agent directory exists, attempt to perform a brute-force
2157 ;; reconstruction of its contents.
2159 (file-name-coding-system nnmail-pathname-coding-system)
2160 (file-attributes (directory-files-and-attributes
2161 (gnus-agent-article-name ""
2162 gnus-agent-read-agentview) nil "^[0-9]+$" t)))
2163 (while file-attributes
2164 (let ((fa (pop file-attributes)))
2166 (push (cons (string-to-number (nth 0 fa)) (time-to-days (nth 5 fa))) alist))))
2168 (file-error nil))))))
2170 (defun gnus-agent-save-alist (group &optional articles state)
2171 "Save the article-state alist for GROUP."
2172 (let* ((file-name-coding-system nnmail-pathname-coding-system)
2173 (prev (cons nil gnus-agent-article-alist))
2175 print-level print-length item article)
2176 (while (setq article (pop articles))
2177 (while (and (cdr prev)
2178 (< (caadr prev) article))
2179 (setq prev (cdr prev)))
2182 (setcdr prev (list (cons article state))))
2183 ((> (caadr prev) article)
2184 (setcdr prev (cons (cons article state) (cdr prev))))
2185 ((= (caadr prev) article)
2186 (setcdr (cadr prev) state)))
2187 (setq prev (cdr prev)))
2188 (setq gnus-agent-article-alist (cdr all))
2190 (gnus-agent-set-local group
2191 (caar gnus-agent-article-alist)
2192 (caar (last gnus-agent-article-alist)))
2194 (gnus-make-directory (gnus-agent-article-name "" group))
2195 (with-temp-file (gnus-agent-article-name ".agentview" group)
2196 (cond ((eq gnus-agent-article-alist-save-format 1)
2197 (princ gnus-agent-article-alist (current-buffer)))
2198 ((eq gnus-agent-article-alist-save-format 2)
2199 (let ((alist gnus-agent-article-alist)
2200 article-id day-of-download comp-list compressed)
2202 (setq article-id (caar alist)
2203 day-of-download (cdar alist)
2204 comp-list (assq day-of-download compressed)
2207 (setcdr comp-list (cons article-id (cdr comp-list)))
2208 (push (list day-of-download article-id) compressed)))
2209 (setq alist compressed)
2211 (setq comp-list (pop alist))
2213 (gnus-compress-sequence (nreverse (cdr comp-list)))))
2214 (princ compressed (current-buffer)))))
2216 (princ gnus-agent-article-alist-save-format (current-buffer))
2219 (gnus-agent-update-view-total-fetched-for group nil)))
2221 (defvar gnus-agent-article-local nil)
2222 (defvar gnus-agent-article-local-times nil)
2223 (defvar gnus-agent-file-loading-local nil)
2225 (defun gnus-agent-load-local (&optional method)
2226 "Load the METHOD'S local file. The local file contains min/max
2227 article counts for each of the method's subscribed groups."
2228 (let ((gnus-command-method (or method gnus-command-method)))
2229 (when (or (null gnus-agent-article-local-times)
2230 (zerop gnus-agent-article-local-times))
2231 (setq gnus-agent-article-local
2232 (gnus-cache-file-contents
2233 (gnus-agent-lib-file "local")
2234 'gnus-agent-file-loading-local
2235 'gnus-agent-read-and-cache-local))
2236 (when gnus-agent-article-local-times
2237 (incf gnus-agent-article-local-times)))
2238 gnus-agent-article-local))
2240 (defun gnus-agent-read-and-cache-local (file)
2241 "Load and read FILE then bind its contents to
2242 gnus-agent-article-local. If that variable had `dirty' (also known as
2243 modified) original contents, they are first saved to their own file."
2244 (if (and gnus-agent-article-local
2245 (symbol-value (intern "+dirty" gnus-agent-article-local)))
2246 (gnus-agent-save-local))
2247 (gnus-agent-read-local file))
2249 (defun gnus-agent-read-local (file)
2250 "Load FILE and do a `read' there."
2251 (let ((my-obarray (gnus-make-hashtable (count-lines (point-min)
2256 (let ((nnheader-file-coding-system gnus-agent-file-coding-system))
2257 (nnheader-insert-file-contents file))
2260 (goto-char (point-min))
2261 ;; Skip any comments at the beginning of the file (the only place where they may appear)
2262 (while (= (following-char) ?\;)
2264 (setq line (1+ line)))
2271 (cur (current-buffer))
2272 (obarray my-obarray))
2273 (setq group (read cur)
2277 (when (stringp group)
2278 (setq group (intern group my-obarray)))
2280 ;; NOTE: The '+ 0' ensure that min and max are both numerics.
2281 (set group (cons (+ 0 min) (+ 0 max))))
2283 (gnus-message 3 "Warning - invalid agent local: %s on line %d: %s"
2284 file line (error-message-string err))))
2286 (setq line (1+ line))))
2288 (set (intern "+dirty" my-obarray) nil)
2289 (set (intern "+method" my-obarray) gnus-command-method)
2292 (defun gnus-agent-save-local (&optional force)
2293 "Save gnus-agent-article-local under it method's agent.lib directory."
2294 (let ((my-obarray gnus-agent-article-local))
2295 (when (and my-obarray
2296 (or force (symbol-value (intern "+dirty" my-obarray))))
2297 (let* ((gnus-command-method (symbol-value (intern "+method" my-obarray)))
2298 ;; NOTE: gnus-command-method is used within gnus-agent-lib-file.
2299 (dest (gnus-agent-lib-file "local")))
2300 (gnus-make-directory (gnus-agent-lib-file ""))
2302 (let ((coding-system-for-write gnus-agent-file-coding-system)
2303 (file-name-coding-system nnmail-pathname-coding-system))
2304 (with-temp-file dest
2305 (let ((gnus-command-method (symbol-value (intern "+method" my-obarray)))
2306 print-level print-length item article
2307 (standard-output (current-buffer)))
2308 (mapatoms (lambda (symbol)
2309 (cond ((not (boundp symbol))
2311 ((member (symbol-name symbol) '("+dirty" "+method"))
2314 (let ((range (symbol-value symbol)))
2324 (defun gnus-agent-get-local (group &optional gmane method)
2325 (let* ((gmane (or gmane (gnus-group-real-name group)))
2326 (gnus-command-method (or method (gnus-find-method-for-group group)))
2327 (local (gnus-agent-load-local))
2328 (symb (intern gmane local))
2329 (minmax (and (boundp symb) (symbol-value symb))))
2331 ;; Bind these so that gnus-agent-load-alist doesn't change the
2332 ;; current alist (i.e. gnus-agent-article-alist)
2333 (let* ((gnus-agent-article-alist gnus-agent-article-alist)
2334 (gnus-agent-file-loading-cache gnus-agent-file-loading-cache)
2335 (alist (gnus-agent-load-alist group)))
2339 (caar (last alist))))
2340 (gnus-agent-set-local group (car minmax) (cdr minmax)
2341 gmane gnus-command-method local))))
2344 (defun gnus-agent-set-local (group min max &optional gmane method local)
2345 (let* ((gmane (or gmane (gnus-group-real-name group)))
2346 (gnus-command-method (or method (gnus-find-method-for-group group)))
2347 (local (or local (gnus-agent-load-local)))
2348 (symb (intern gmane local))
2349 (minmax (and (boundp symb) (symbol-value symb))))
2350 (if (cond ((and minmax
2351 (or (not (eq min (car minmax)))
2352 (not (eq max (cdr minmax))))
2361 (set symb (cons min max))
2364 (unintern symb local)))
2365 (set (intern "+dirty" local) t))))
2367 (defun gnus-agent-article-name (article group)
2368 (expand-file-name article
2369 (file-name-as-directory
2370 (gnus-agent-group-pathname group))))
2372 (defun gnus-agent-batch-confirmation (msg)
2373 "Show error message and return t."
2374 (gnus-message 1 "%s" msg)
2378 (defun gnus-agent-batch-fetch ()
2379 "Start Gnus and fetch session."
2382 (let ((gnus-agent-confirmation-function 'gnus-agent-batch-confirmation))
2383 (gnus-agent-fetch-session))
2386 (defun gnus-agent-fetch-session ()
2387 "Fetch all articles and headers that are eligible for fetching."
2389 (unless gnus-agent-covered-methods
2390 (error "No servers are covered by the Gnus agent"))
2391 (unless gnus-plugged
2392 (error "Can't fetch articles while Gnus is unplugged"))
2393 (let ((methods (gnus-agent-covered-methods))
2394 groups group gnus-command-method)
2397 (setq gnus-command-method (car methods))
2398 (when (and (or (gnus-server-opened gnus-command-method)
2399 (gnus-open-server gnus-command-method))
2400 (gnus-online gnus-command-method))
2401 (setq groups (gnus-groups-from-server (car methods)))
2402 (gnus-agent-with-fetch
2403 (while (setq group (pop groups))
2404 (when (<= (gnus-group-level group)
2405 gnus-agent-handle-level)
2406 (if (or debug-on-error debug-on-quit)
2407 (gnus-agent-fetch-group-1
2408 group gnus-command-method)
2410 (gnus-agent-fetch-group-1
2411 group gnus-command-method)
2413 (unless (funcall gnus-agent-confirmation-function
2414 (format "Error %s while fetching session. Should gnus continue? "
2415 (error-message-string err)))
2416 (error "Cannot fetch articles into the Gnus agent")))
2418 (gnus-agent-regenerate-group group)
2419 (unless (funcall gnus-agent-confirmation-function
2421 "%s while fetching session. Should gnus continue? "
2422 (error-message-string err)))
2424 "Cannot fetch articles into the Gnus agent")))))))))
2425 (setq methods (cdr methods)))
2426 (gnus-run-hooks 'gnus-agent-fetched-hook)
2427 (gnus-message 6 "Finished fetching articles into the Gnus agent"))))
2429 (defun gnus-agent-fetch-group-1 (group method)
2431 (let ((gnus-command-method method)
2432 (gnus-newsgroup-name group)
2433 (gnus-newsgroup-dependencies gnus-newsgroup-dependencies)
2434 (gnus-newsgroup-headers gnus-newsgroup-headers)
2435 (gnus-newsgroup-scored gnus-newsgroup-scored)
2436 (gnus-use-cache gnus-use-cache)
2437 (gnus-summary-expunge-below gnus-summary-expunge-below)
2438 (gnus-summary-mark-below gnus-summary-mark-below)
2439 (gnus-orphan-score gnus-orphan-score)
2440 ;; Maybe some other gnus-summary local variables should also
2446 category predicate info marks score-param
2448 (unless (gnus-check-group group)
2449 (error "Can't open server for %s" group))
2452 (when (or gnus-newsgroup-active
2454 (gnus-activate-group group))
2455 (let ((marked-articles gnus-newsgroup-downloadable))
2456 ;; Identify the articles marked for download
2457 (unless gnus-newsgroup-active
2458 ;; The variable gnus-newsgroup-active was selected as I need
2459 ;; a gnus-summary local variable that is NOT bound to any
2460 ;; value (its global value should default to nil).
2461 (dolist (mark gnus-agent-download-marks)
2462 (let ((arts (cdr (assq mark (gnus-info-marks
2463 (setq info (gnus-get-info group)))))))
2465 (setq marked-articles (nconc (gnus-uncompress-range arts)
2468 (setq marked-articles (sort marked-articles '<))
2470 ;; Fetch any new articles from the server
2471 (setq articles (gnus-agent-fetch-headers group))
2473 ;; Merge new articles with marked
2474 (setq articles (sort (append marked-articles articles) '<))
2477 ;; Parse them and see which articles we want to fetch.
2478 (setq gnus-newsgroup-dependencies
2479 (or gnus-newsgroup-dependencies
2480 (make-vector (length articles) 0)))
2481 (setq gnus-newsgroup-headers
2482 (or gnus-newsgroup-headers
2483 (gnus-get-newsgroup-headers-xover articles nil nil
2485 ;; `gnus-agent-overview-buffer' may be killed for
2486 ;; timeout reason. If so, recreate it.
2487 (gnus-agent-create-buffer)
2489 ;; Figure out how to select articles in this group
2490 (setq category (gnus-group-category group))
2494 (gnus-agent-find-parameter group 'agent-predicate)))
2496 ;; If the selection predicate requires scoring, score each header
2497 (unless (memq predicate '(gnus-agent-true gnus-agent-false))
2499 (gnus-agent-find-parameter group 'agent-score-file)))
2500 ;; Translate score-param into real one
2503 ((eq score-param 'file)
2504 (setq score-param (gnus-all-score-files group)))
2505 ((stringp (car score-param)))
2507 (setq score-param (list (list score-param)))))
2509 (gnus-score-headers score-param))))
2511 (unless (and (eq predicate 'gnus-agent-false)
2512 (not marked-articles))
2513 (let ((arts (list nil)))
2514 (let ((arts-tail arts)
2515 (alist (gnus-agent-load-alist group))
2516 (marked-articles marked-articles)
2517 (gnus-newsgroup-headers gnus-newsgroup-headers))
2518 (while (setq gnus-headers (pop gnus-newsgroup-headers))
2519 (let ((num (mail-header-number gnus-headers)))
2520 ;; Determine if this article is already in the cache
2522 (> num (caar alist)))
2523 (setq alist (cdr alist)))
2525 (unless (and (eq num (caar alist))
2528 ;; Determine if this article was marked for download.
2529 (while (and marked-articles
2530 (> num (car marked-articles)))
2531 (setq marked-articles
2532 (cdr marked-articles)))
2534 ;; When this article is marked, or selected by the
2535 ;; predicate, add it to the download list
2536 (when (or (eq num (car marked-articles))
2539 (assq num gnus-newsgroup-scored))
2540 gnus-summary-default-score))
2541 (gnus-agent-long-article
2542 (gnus-agent-find-parameter
2543 group 'agent-long-article))
2544 (gnus-agent-short-article
2545 (gnus-agent-find-parameter
2546 group 'agent-short-article))
2547 (gnus-agent-low-score
2548 (gnus-agent-find-parameter
2549 group 'agent-low-score))
2550 (gnus-agent-high-score
2551 (gnus-agent-find-parameter
2552 group 'agent-high-score))
2553 (gnus-agent-expire-days
2554 (gnus-agent-find-parameter
2555 group 'agent-days-until-old)))
2556 (funcall predicate)))
2557 (gnus-agent-append-to-list arts-tail num))))))
2559 (let (fetched-articles)
2560 ;; Fetch all selected articles
2561 (setq gnus-newsgroup-undownloaded
2562 (gnus-sorted-ndifference
2563 gnus-newsgroup-undownloaded
2564 (setq fetched-articles
2566 (gnus-agent-fetch-articles group (cdr arts))
2569 (let ((unfetched-articles
2570 (gnus-sorted-ndifference (cdr arts) fetched-articles)))
2571 (if gnus-newsgroup-active
2572 ;; Update the summary buffer
2574 (dolist (article marked-articles)
2575 (gnus-summary-set-agent-mark article t))
2576 (dolist (article fetched-articles)
2577 (when gnus-agent-mark-unread-after-downloaded
2578 (setq gnus-newsgroup-downloadable
2579 (delq article gnus-newsgroup-downloadable))
2580 (gnus-summary-mark-article
2581 article gnus-unread-mark))
2582 (when (gnus-summary-goto-subject article nil t)
2583 (gnus-summary-update-download-mark article)))
2584 (dolist (article unfetched-articles)
2585 (gnus-summary-mark-article
2586 article gnus-canceled-mark)))
2588 ;; Update the group buffer.
2590 ;; When some, or all, of the marked articles came
2591 ;; from the download mark. Remove that mark. I
2592 ;; didn't do this earlier as I only want to remove
2593 ;; the marks after the fetch is completed.
2595 (dolist (mark gnus-agent-download-marks)
2596 (when (eq mark 'download)
2598 (assq mark (gnus-info-marks
2599 (setq info (gnus-get-info group))))))
2600 (when (cdr marked-arts)
2602 (delq marked-arts (gnus-info-marks info)))
2603 (gnus-info-set-marks info marks)))))
2604 (let ((read (gnus-info-read
2605 (or info (setq info (gnus-get-info group))))))
2607 info (gnus-add-to-range read unfetched-articles)))
2609 (gnus-group-update-group group t)
2613 (concat "(gnus-group-set-info '"
2614 (gnus-prin1-to-string info)
2618 ;;; Agent Category Mode
2621 (defvar gnus-category-mode-hook nil
2622 "Hook run in `gnus-category-mode' buffers.")
2624 (defvar gnus-category-line-format " %(%20c%): %g\n"
2625 "Format of category lines.
2627 Valid specifiers include:
2628 %c Topic name (string)
2629 %g The number of groups in the topic (integer)
2631 General format specifiers can also be used. See Info node
2632 `(gnus)Formatting Variables'.")
2634 (defvar gnus-category-mode-line-format "Gnus: %%b"
2635 "The format specification for the category mode line.")
2637 (defvar gnus-agent-predicate 'false
2638 "The selection predicate used when no other source is available.")
2640 (defvar gnus-agent-short-article 500
2641 "Articles that have fewer lines than this are short.")
2643 (defvar gnus-agent-long-article 1000
2644 "Articles that have more lines than this are long.")
2646 (defvar gnus-agent-low-score 0
2647 "Articles that have a score lower than this have a low score.")
2649 (defvar gnus-agent-high-score 0
2650 "Articles that have a score higher than this have a high score.")
2653 ;;; Internal variables.
2655 (defvar gnus-category-buffer "*Agent Category*")
2657 (defvar gnus-category-line-format-alist
2658 `((?c gnus-tmp-name ?s)
2659 (?g gnus-tmp-groups ?d)))
2661 (defvar gnus-category-mode-line-format-alist
2662 `((?u user-defined ?s)))
2664 (defvar gnus-category-line-format-spec nil)
2665 (defvar gnus-category-mode-line-format-spec nil)
2667 (defvar gnus-category-mode-map nil)
2668 (put 'gnus-category-mode 'mode-class 'special)
2670 (unless gnus-category-mode-map
2671 (setq gnus-category-mode-map (make-sparse-keymap))
2672 (suppress-keymap gnus-category-mode-map)
2674 (gnus-define-keys gnus-category-mode-map
2675 "q" gnus-category-exit
2676 "k" gnus-category-kill
2677 "c" gnus-category-copy
2678 "a" gnus-category-add
2679 "e" gnus-agent-customize-category
2680 "p" gnus-category-edit-predicate
2681 "g" gnus-category-edit-groups
2682 "s" gnus-category-edit-score
2683 "l" gnus-category-list
2685 "\C-c\C-i" gnus-info-find-node
2686 "\C-c\C-b" gnus-bug))
2688 (defvar gnus-category-menu-hook nil
2689 "*Hook run after the creation of the menu.")
2691 (defun gnus-category-make-menu-bar ()
2692 (gnus-turn-off-edit-menu 'category)
2693 (unless (boundp 'gnus-category-menu)
2695 gnus-category-menu gnus-category-mode-map ""
2697 ["Add" gnus-category-add t]
2698 ["Kill" gnus-category-kill t]
2699 ["Copy" gnus-category-copy t]
2700 ["Edit category" gnus-agent-customize-category t]
2701 ["Edit predicate" gnus-category-edit-predicate t]
2702 ["Edit score" gnus-category-edit-score t]
2703 ["Edit groups" gnus-category-edit-groups t]
2704 ["Exit" gnus-category-exit t]))
2706 (gnus-run-hooks 'gnus-category-menu-hook)))
2708 (defun gnus-category-mode ()
2709 "Major mode for listing and editing agent categories.
2711 All normal editing commands are switched off.
2712 \\<gnus-category-mode-map>
2713 For more in-depth information on this mode, read the manual
2714 \(`\\[gnus-info-find-node]').
2716 The following commands are available:
2718 \\{gnus-category-mode-map}"
2720 (when (gnus-visual-p 'category-menu 'menu)
2721 (gnus-category-make-menu-bar))
2722 (kill-all-local-variables)
2723 (gnus-simplify-mode-line)
2724 (setq major-mode 'gnus-category-mode)
2725 (setq mode-name "Category")
2726 (gnus-set-default-directory)
2727 (setq mode-line-process nil)
2728 (use-local-map gnus-category-mode-map)
2729 (buffer-disable-undo)
2730 (setq truncate-lines t)
2731 (setq buffer-read-only t)
2732 (gnus-run-mode-hooks 'gnus-category-mode-hook))
2734 (defalias 'gnus-category-position-point 'gnus-goto-colon)
2736 (defun gnus-category-insert-line (category)
2737 (let* ((gnus-tmp-name (format "%s" (car category)))
2738 (gnus-tmp-groups (length (gnus-agent-cat-groups category))))
2740 (gnus-add-text-properties
2744 (eval gnus-category-line-format-spec))
2745 (list 'gnus-category gnus-tmp-name))))
2747 (defun gnus-enter-category-buffer ()
2748 "Go to the Category buffer."
2750 (gnus-category-setup-buffer)
2751 (gnus-configure-windows 'category)
2752 (gnus-category-prepare))
2754 (defun gnus-category-setup-buffer ()
2755 (unless (get-buffer gnus-category-buffer)
2756 (with-current-buffer (gnus-get-buffer-create gnus-category-buffer)
2757 (gnus-category-mode))))
2759 (defun gnus-category-prepare ()
2760 (gnus-set-format 'category-mode)
2761 (gnus-set-format 'category t)
2762 (let ((alist gnus-category-alist)
2763 (buffer-read-only nil))
2766 (gnus-category-insert-line (pop alist)))
2767 (goto-char (point-min))
2768 (gnus-category-position-point)))
2770 (defun gnus-category-name ()
2771 (or (intern (get-text-property (point-at-bol) 'gnus-category))
2772 (error "No category on the current line")))
2774 (defun gnus-category-read ()
2775 "Read the category alist."
2776 (setq gnus-category-alist
2780 (nnheader-insert-file-contents (nnheader-concat gnus-agent-directory "lib/categories"))
2781 (goto-char (point-min))
2782 ;; This code isn't temp, it will be needed so long as
2783 ;; anyone may be migrating from an older version.
2785 ;; Once we're certain that people will not revert to an
2786 ;; earlier version, we can take out the old-list code in
2787 ;; gnus-category-write.
2788 (let* ((old-list (read (current-buffer)))
2789 (new-list (ignore-errors (read (current-buffer)))))
2792 ;; Convert from a positional list to an alist.
2802 '(agent-predicate agent-score-file agent-groups))))
2805 (list (gnus-agent-cat-make 'default 'short)))))
2807 (defun gnus-category-write ()
2808 "Write the category alist."
2809 (setq gnus-category-predicate-cache nil
2810 gnus-category-group-cache nil)
2811 (gnus-make-directory (nnheader-concat gnus-agent-directory "lib"))
2812 (with-temp-file (nnheader-concat gnus-agent-directory "lib/categories")
2813 ;; This prin1 is temporary. It exists so that people can revert
2814 ;; to an earlier version of gnus-agent.
2815 (prin1 (mapcar (lambda (c)
2817 (cdr (assoc 'agent-predicate c))
2818 (cdr (assoc 'agent-score-file c))
2819 (cdr (assoc 'agent-groups c))))
2820 gnus-category-alist)
2823 (prin1 gnus-category-alist (current-buffer))))
2825 (defun gnus-category-edit-predicate (category)
2826 "Edit the predicate for CATEGORY."
2827 (interactive (list (gnus-category-name)))
2828 (let ((info (assq category gnus-category-alist)))
2830 (gnus-agent-cat-predicate info)
2831 (format "Editing the select predicate for category %s" category)
2832 `(lambda (predicate)
2833 ;; Avoid run-time execution of setf form
2834 ;; (setf (gnus-agent-cat-predicate (assq ',category gnus-category-alist))
2836 ;; use its expansion instead:
2837 (gnus-agent-cat-set-property (assq ',category gnus-category-alist)
2838 'agent-predicate predicate)
2840 (gnus-category-write)
2841 (gnus-category-list)))))
2843 (defun gnus-category-edit-score (category)
2844 "Edit the score expression for CATEGORY."
2845 (interactive (list (gnus-category-name)))
2846 (let ((info (assq category gnus-category-alist)))
2848 (gnus-agent-cat-score-file info)
2849 (format "Editing the score expression for category %s" category)
2850 `(lambda (score-file)
2851 ;; Avoid run-time execution of setf form
2852 ;; (setf (gnus-agent-cat-score-file (assq ',category gnus-category-alist))
2854 ;; use its expansion instead:
2855 (gnus-agent-cat-set-property (assq ',category gnus-category-alist)
2856 'agent-score-file score-file)
2858 (gnus-category-write)
2859 (gnus-category-list)))))
2861 (defun gnus-category-edit-groups (category)
2862 "Edit the group list for CATEGORY."
2863 (interactive (list (gnus-category-name)))
2864 (let ((info (assq category gnus-category-alist)))
2866 (gnus-agent-cat-groups info)
2867 (format "Editing the group list for category %s" category)
2869 ;; Avoid run-time execution of setf form
2870 ;; (setf (gnus-agent-cat-groups (assq ',category gnus-category-alist))
2872 ;; use its expansion instead:
2873 (gnus-agent-set-cat-groups (assq ',category gnus-category-alist)
2876 (gnus-category-write)
2877 (gnus-category-list)))))
2879 (defun gnus-category-kill (category)
2880 "Kill the current category."
2881 (interactive (list (gnus-category-name)))
2882 (let ((info (assq category gnus-category-alist))
2883 (buffer-read-only nil))
2885 (setq gnus-category-alist (delq info gnus-category-alist))
2886 (gnus-category-write)))
2888 (defun gnus-category-copy (category to)
2889 "Copy the current category."
2890 (interactive (list (gnus-category-name) (intern (read-string "New name: "))))
2891 (let ((info (assq category gnus-category-alist)))
2892 (push (let ((newcat (gnus-copy-sequence info)))
2893 (setf (gnus-agent-cat-name newcat) to)
2894 (setf (gnus-agent-cat-groups newcat) nil)
2896 gnus-category-alist)
2897 (gnus-category-write)
2898 (gnus-category-list)))
2900 (defun gnus-category-add (category)
2901 "Create a new category."
2902 (interactive "SCategory name: ")
2903 (when (assq category gnus-category-alist)
2904 (error "Category %s already exists" category))
2905 (push (gnus-agent-cat-make category)
2906 gnus-category-alist)
2907 (gnus-category-write)
2908 (gnus-category-list))
2910 (defun gnus-category-list ()
2911 "List all categories."
2913 (gnus-category-prepare))
2915 (defun gnus-category-exit ()
2916 "Return to the group buffer."
2918 (kill-buffer (current-buffer))
2919 (gnus-configure-windows 'group t))
2921 ;; To avoid having 8-bit characters in the source file.
2922 (defvar gnus-category-not (list '! 'not (intern (format "%c" 172))))
2924 (defvar gnus-category-predicate-alist
2925 '((spam . gnus-agent-spam-p)
2926 (short . gnus-agent-short-p)
2927 (long . gnus-agent-long-p)
2928 (low . gnus-agent-low-scored-p)
2929 (high . gnus-agent-high-scored-p)
2930 (read . gnus-agent-read-p)
2931 (true . gnus-agent-true)
2932 (false . gnus-agent-false))
2933 "Mapping from short score predicate symbols to predicate functions.")
2935 (defun gnus-agent-spam-p ()
2936 "Say whether an article is spam or not."
2937 (unless gnus-agent-spam-hashtb
2938 (setq gnus-agent-spam-hashtb (gnus-make-hashtable 1000)))
2939 (if (not (equal (mail-header-references gnus-headers) ""))
2941 (let ((string (gnus-simplify-subject (mail-header-subject gnus-headers))))
2943 (gnus-gethash string gnus-agent-spam-hashtb)
2944 (gnus-sethash string t gnus-agent-spam-hashtb)))))
2946 (defun gnus-agent-short-p ()
2947 "Say whether an article is short or not."
2948 (< (mail-header-lines gnus-headers) gnus-agent-short-article))
2950 (defun gnus-agent-long-p ()
2951 "Say whether an article is long or not."
2952 (> (mail-header-lines gnus-headers) gnus-agent-long-article))
2954 (defun gnus-agent-low-scored-p ()
2955 "Say whether an article has a low score or not."
2956 (< gnus-score gnus-agent-low-score))
2958 (defun gnus-agent-high-scored-p ()
2959 "Say whether an article has a high score or not."
2960 (> gnus-score gnus-agent-high-score))
2962 (defun gnus-agent-read-p ()
2963 "Say whether an article is read or not."
2964 (gnus-member-of-range (mail-header-number gnus-headers)
2965 (gnus-info-read (gnus-get-info gnus-newsgroup-name))))
2967 (defun gnus-category-make-function (predicate)
2968 "Make a function from PREDICATE."
2969 (let ((func (gnus-category-make-function-1 predicate)))
2970 (if (and (= (length func) 1)
2971 (symbolp (car func)))
2973 (gnus-byte-compile `(lambda () ,func)))))
2975 (defun gnus-agent-true ()
2979 (defun gnus-agent-false ()
2983 (defun gnus-category-make-function-1 (predicate)
2984 "Make a function from PREDICATE."
2986 ;; Functions are just returned as is.
2987 ((or (symbolp predicate)
2988 (functionp predicate))
2989 `(,(or (cdr (assq predicate gnus-category-predicate-alist))
2991 ;; More complex predicate.
2994 ((memq (car predicate) '(& and))
2996 ((memq (car predicate) '(| or))
2998 ((memq (car predicate) gnus-category-not)
3000 ,@(mapcar 'gnus-category-make-function-1 (cdr predicate))))
3002 (error "Unknown predicate type: %s" predicate))))
3004 (defun gnus-get-predicate (predicate)
3005 "Return the function implementing PREDICATE."
3006 (or (cdr (assoc predicate gnus-category-predicate-cache))
3007 (let ((func (gnus-category-make-function predicate)))
3008 (setq gnus-category-predicate-cache
3009 (nconc gnus-category-predicate-cache
3010 (list (cons predicate func))))
3013 (defun gnus-predicate-implies-unread (predicate)
3014 "Say whether PREDICATE implies unread articles only.
3015 It is okay to miss some cases, but there must be no false positives.
3016 That is, if this predicate returns true, then indeed the predicate must
3017 return only unread articles."
3018 (eq t (gnus-function-implies-unread-1
3019 (gnus-category-make-function-1 predicate))))
3021 (defun gnus-function-implies-unread-1 (function)
3022 "Recursively evaluate a predicate function to determine whether it can select
3023 any read articles. Returns t if the function is known to never
3024 return read articles, nil when it is known to always return read
3025 articles, and t_nil when the function may return both read and unread
3027 (let ((func (car function))
3028 (args (mapcar 'gnus-function-implies-unread-1 (cdr function))))
3029 (cond ((eq func 'and)
3030 (cond ((memq t args) ; if any argument returns only unread articles
3031 ;; then that argument constrains the result to only unread articles.
3033 ((memq 't_nil args) ; if any argument is indeterminate
3034 ;; then the result is indeterminate
3037 (cond ((memq nil args) ; if any argument returns read articles
3038 ;; then that argument ensures that the results includes read articles.
3040 ((memq 't_nil args) ; if any argument is indeterminate
3041 ;; then that argument ensures that the results are indeterminate
3043 (t ; if all arguments return only unread articles
3044 ;; then the result returns only unread articles
3047 (cond ((eq (car args) 't_nil) ; if the argument is indeterminate
3048 ; then the result is indeterminate
3051 ; toggle the result to be the opposite of the argument
3053 ((eq func 'gnus-agent-read-p)
3054 nil) ; The read predicate NEVER returns unread articles
3055 ((eq func 'gnus-agent-false)
3056 t) ; The false predicate returns t as the empty set excludes all read articles
3057 ((eq func 'gnus-agent-true)
3058 nil) ; The true predicate ALWAYS returns read articles
3059 ((catch 'found-match
3060 (let ((alist gnus-category-predicate-alist))
3062 (if (eq func (cdar alist))
3063 (throw 'found-match t)
3064 (setq alist (cdr alist))))))
3065 't_nil) ; All other predicates return read and unread articles
3067 (error "Unknown predicate function: %s" function)))))
3069 (defun gnus-group-category (group)
3070 "Return the category GROUP belongs to."
3071 (unless gnus-category-group-cache
3072 (setq gnus-category-group-cache (gnus-make-hashtable 1000))
3073 (let ((cs gnus-category-alist)
3075 (while (setq cat (pop cs))
3076 (setq groups (gnus-agent-cat-groups cat))
3078 (gnus-sethash (pop groups) cat gnus-category-group-cache)))))
3079 (or (gnus-gethash group gnus-category-group-cache)
3080 (assq 'default gnus-category-alist)))
3082 (defun gnus-agent-expire-group (group &optional articles force)
3083 "Expire all old articles in GROUP.
3084 If you want to force expiring of certain articles, this function can
3085 take ARTICLES, and FORCE parameters as well.
3087 The articles on which the expiration process runs are selected as follows:
3088 if ARTICLES is null, all read and unmarked articles.
3089 if ARTICLES is t, all articles.
3090 if ARTICLES is a list, just those articles.
3091 FORCE is equivalent to setting the expiration predicates to true."
3092 (interactive (list (gnus-agent-read-group)))
3095 (gnus-agent-expire articles group force)
3096 (let ( ;; Bind gnus-agent-expire-stats to enable tracking of
3097 ;; expiration statistics of this single group
3098 (gnus-agent-expire-stats (list 0 0 0.0)))
3099 (if (or (not (eq articles t))
3101 (concat "Are you sure that you want to "
3102 "expire all articles in " group "? ")))
3103 (let ((gnus-command-method (gnus-find-method-for-group group))
3104 (overview (gnus-get-buffer-create " *expire overview*"))
3107 (let ((active-file (gnus-agent-lib-file "active")))
3108 (when (file-exists-p active-file)
3110 (nnheader-insert-file-contents active-file)
3111 (gnus-active-to-gnus-format
3113 (setq orig (gnus-make-hashtable
3114 (count-lines (point-min) (point-max))))))
3116 (gnus-agent-expire-group-1
3117 group overview (gnus-gethash-safe group orig)
3119 (kill-buffer overview))))
3120 (gnus-message 4 "%s" (gnus-agent-expire-done-message)))))
3122 (defun gnus-agent-expire-group-1 (group overview active articles force)
3123 ;; Internal function - requires caller to have set
3124 ;; gnus-command-method, initialized overview buffer, and to have
3125 ;; provided a non-nil active
3127 (let ((dir (gnus-agent-group-pathname group))
3128 (file-name-coding-system nnmail-pathname-coding-system)
3129 (decoded (gnus-agent-decoded-group-name group)))
3130 (gnus-agent-with-refreshed-group
3132 (when (boundp 'gnus-agent-expire-current-dirs)
3133 (set 'gnus-agent-expire-current-dirs
3135 (symbol-value 'gnus-agent-expire-current-dirs))))
3137 (if (and (not force)
3138 (eq 'DISABLE (gnus-agent-find-parameter group
3139 'agent-enable-expiration)))
3140 (gnus-message 5 "Expiry skipping over %s" decoded)
3141 (gnus-message 5 "Expiring articles in %s" decoded)
3142 (gnus-agent-load-alist group)
3143 (let* ((bytes-freed 0)
3144 (size-files-deleted 0.0)
3146 (nov-entries-deleted 0)
3147 (info (gnus-get-info group))
3148 (alist gnus-agent-article-alist)
3149 (day (- (time-to-days (current-time))
3150 (gnus-agent-find-parameter group 'agent-days-until-old)))
3151 (specials (if (and alist
3153 ;; This could be a bit of a problem. I need to
3154 ;; keep the last article to avoid refetching
3155 ;; headers when using nntp in the backend. At
3156 ;; the same time, if someone uses a backend
3157 ;; that supports article moving then I may have
3158 ;; to remove the last article to complete the
3159 ;; move. Right now, I'm going to assume that
3160 ;; FORCE overrides specials.
3161 (list (caar (last alist)))))
3162 (unreads ;; Articles that are excluded from the
3163 ;; expiration process
3164 (cond (gnus-agent-expire-all
3165 ;; All articles are marked read by global decree
3168 ;; All articles are marked read by function
3172 ;; Unread articles are marked protected from
3173 ;; expiration Don't call
3174 ;; gnus-list-of-unread-articles as it returns
3175 ;; articles that have not been fetched into the
3178 (gnus-agent-unread-articles group)))
3180 ;; All articles EXCEPT those named by the caller
3181 ;; are protected from expiration
3182 (gnus-sorted-difference
3183 (gnus-uncompress-range
3185 (caar (last alist))))
3186 (sort articles '<)))))
3187 (marked ;; More articles that are excluded from the
3188 ;; expiration process
3189 (cond (gnus-agent-expire-all
3190 ;; All articles are unmarked by global decree
3193 ;; All articles are unmarked by function
3197 ;; All articles may as well be unmarked as the
3198 ;; unreads list already names the articles we are
3202 ;; Ticked and/or dormant articles are excluded
3205 (gnus-uncompress-range
3206 (cdr (assq 'tick (gnus-info-marks info))))
3207 (gnus-uncompress-range
3209 (gnus-info-marks info))))))))
3210 (nov-file (concat dir ".overview"))
3216 ;; The normal article alist contains elements that look like
3217 ;; (article# . fetch_date) I need to combine other
3218 ;; information with this list. For example, a flag indicating
3219 ;; that a particular article MUST BE KEPT. To do this, I'm
3220 ;; going to transform the elements to look like (article#
3221 ;; fetch_date keep_flag NOV_entry_position) Later, I'll reverse
3222 ;; the process to generate the expired article alist.
3224 ;; Convert the alist elements to (article# fetch_date nil
3226 (setq dlist (mapcar (lambda (e)
3227 (list (car e) (cdr e) nil nil)) alist))
3229 ;; Convert the keep lists to elements that look like (article#
3230 ;; nil keep_flag nil) then append it to the expanded dlist
3231 ;; These statements are sorted by ascending precidence of the
3233 (setq dlist (nconc dlist
3235 (list e nil 'unread nil))
3237 (setq dlist (nconc dlist
3239 (list e nil 'marked nil))
3241 (setq dlist (nconc dlist
3243 (list e nil 'special nil))
3246 (set-buffer overview)
3248 (buffer-disable-undo)
3249 (when (file-exists-p nov-file)
3250 (gnus-message 7 "gnus-agent-expire: Loading overview...")
3251 (nnheader-insert-file-contents nov-file)
3252 (goto-char (point-min))
3255 (while (< (setq p (point)) (point-max))
3257 ;; If I successfully read an integer (the plus zero
3258 ;; ensures a numeric type), append the position
3260 (push (list (+ 0 (read (current-buffer))) nil nil
3264 (gnus-message 1 "gnus-agent-expire: read error \
3265 occurred when reading expression at %s in %s. Skipping to next \
3266 line." (point) nov-file)))
3267 ;; Whether I succeeded, or failed, it doesn't matter.
3268 ;; Move to the next line then try again.
3272 7 "gnus-agent-expire: Loading overview... Done"))
3273 (set-buffer-modified-p nil)
3275 ;; At this point, all of the information is in dlist. The
3276 ;; only problem is that much of it is spread across multiple
3277 ;; entries. Sort then MERGE!!
3278 (gnus-message 7 "gnus-agent-expire: Sorting entries... ")
3279 ;; If two entries have the same article-number then sort by
3280 ;; ascending keep_flag.
3287 (cond ((< (nth 0 a) (nth 0 b))
3289 ((> (nth 0 a) (nth 0 b))
3292 (let ((a (or (symbol-value (nth 2 a))
3294 (b (or (symbol-value (nth 2 b))
3297 (gnus-message 7 "gnus-agent-expire: Sorting entries... Done")
3298 (gnus-message 7 "gnus-agent-expire: Merging entries... ")
3299 (let ((dlist dlist))
3300 (while (cdr dlist) ; I'm not at the end-of-list
3301 (if (eq (caar dlist) (caadr dlist))
3302 (let ((first (cdr (car dlist)))
3303 (secnd (cdr (cadr dlist))))
3304 (setcar first (or (car first)
3305 (car secnd))) ; fetch_date
3306 (setq first (cdr first)
3308 (setcar first (or (car first)
3309 (car secnd))) ; Keep_flag
3310 (setq first (cdr first)
3312 (setcar first (or (car first)
3313 (car secnd))) ; NOV_entry_position
3315 (setcdr dlist (cddr dlist)))
3316 (setq dlist (cdr dlist)))))
3318 ;; Check the order of the entry positions. They should be in
3319 ;; ascending order. If they aren't, the positions must be
3320 ;; converted to markers.
3321 (when (catch 'sort-results
3326 (if (setq pos (nth 3 (pop dlist)))
3327 (if (< pos prev-pos)
3328 (throw 'sort-results 'unsorted)
3329 (setq prev-pos pos))))))
3330 (gnus-message 7 "gnus-agent-expire: Unsorted overview; inserting markers to compensate.")
3331 (mapc (lambda (entry)
3332 (let ((pos (nth 3 entry)))
3335 (set-marker (make-marker)
3339 (gnus-message 7 "gnus-agent-expire: Merging entries... Done")
3341 (let* ((len (float (length dlist)))
3348 (let ((new-completed (truncate (* 100.0
3349 (/ (setq cnt (1+ cnt))
3352 (when (> new-completed completed)
3353 (setq completed new-completed)
3354 (gnus-message 7 "%3d%% completed..." completed)))
3355 (let* ((entry (car dlist))
3356 (article-number (nth 0 entry))
3357 (fetch-date (nth 1 entry))
3358 (keep (nth 2 entry))
3359 (marker (nth 3 entry)))
3362 ;; Kept articles are unread, marked, or special.
3364 (gnus-agent-message 10
3365 "gnus-agent-expire: %s:%d: Kept %s article%s."
3366 decoded article-number keep (if fetch-date " and file" ""))
3368 (unless (file-exists-p
3369 (concat dir (number-to-string
3371 (setf (nth 1 entry) nil)
3372 (gnus-agent-message 3 "gnus-agent-expire cleared \
3373 download flag on %s:%d as the cached article file is missing."
3374 decoded (caar dlist)))
3376 (gnus-message 1 "gnus-agent-expire detected a \
3377 missing NOV entry. Run gnus-agent-regenerate-group to restore it.")))
3378 (gnus-agent-append-to-list
3380 (cons article-number fetch-date)))
3382 ;; The following articles are READ, UNMARKED, and
3383 ;; ORDINARY. See if they can be EXPIRED!!!
3386 ((not (integerp fetch-date))
3387 'read) ;; never fetched article (may expire
3389 ((not (file-exists-p
3390 (concat dir (number-to-string
3392 (setf (nth 1 entry) nil)
3393 'externally-expired) ;; Can't find the cached
3394 ;; article. Handle case
3395 ;; as though this article
3396 ;; was never fetched.
3398 ;; We now have the arrival day, so we see
3399 ;; whether it's old enough to be expired.
3405 ;; I found some reason to expire this entry.
3407 (let ((actions nil))
3408 (when (memq type '(forced expired))
3409 (ignore-errors ; Just being paranoid.
3410 (let* ((file-name (nnheader-concat dir (number-to-string
3412 (size (float (nth 7 (file-attributes file-name)))))
3413 (incf bytes-freed size)
3414 (incf size-files-deleted size)
3415 (incf files-deleted)
3416 (delete-file file-name))
3417 (push "expired cached article" actions))
3418 (setf (nth 1 entry) nil)
3422 (push "NOV entry removed" actions)
3424 (goto-char (if (markerp marker)
3426 (- marker position-offset)))
3428 (incf nov-entries-deleted)
3430 (let* ((from (point-at-bol))
3431 (to (progn (forward-line 1) (point)))
3432 (freed (- to from)))
3433 (incf bytes-freed freed)
3434 (incf position-offset freed)
3435 (delete-region from to)))
3437 ;; If considering all articles is set, I can only
3438 ;; expire article IDs that are no longer in the
3439 ;; active range (That is, articles that preceed the
3440 ;; first article in the new alist).
3441 (if (and gnus-agent-consider-all-articles
3442 (>= article-number (car active)))
3443 ;; I have to keep this ID in the alist
3444 (gnus-agent-append-to-list
3445 tail-alist (cons article-number fetch-date))
3446 (push (format "Removed %s article number from \
3447 article alist" type) actions))
3450 (gnus-agent-message 8 "gnus-agent-expire: %s:%d: %s"
3451 decoded article-number
3452 (mapconcat 'identity actions ", ")))))
3455 10 "gnus-agent-expire: %s:%d: Article kept as \
3456 expiration tests failed." decoded article-number)
3457 (gnus-agent-append-to-list
3458 tail-alist (cons article-number fetch-date)))
3461 ;; Remove markers as I intend to reuse this buffer again.
3464 (set-marker marker nil))
3466 (setq dlist (cdr dlist))))
3468 (setq alist (cdr alist))
3470 (let ((inhibit-quit t))
3471 (unless (equal alist gnus-agent-article-alist)
3472 (setq gnus-agent-article-alist alist)
3473 (gnus-agent-save-alist group))
3475 (when (buffer-modified-p)
3476 (let ((coding-system-for-write
3477 gnus-agent-file-coding-system))
3478 (gnus-make-directory dir)
3479 (write-region (point-min) (point-max) nov-file nil
3481 ;; clear the modified flag as that I'm not confused by
3482 ;; its status on the next pass through this routine.
3483 (set-buffer-modified-p nil)
3484 (gnus-agent-update-view-total-fetched-for group t)))
3486 (when (eq articles t)
3487 (gnus-summary-update-info))))
3489 (when (boundp 'gnus-agent-expire-stats)
3490 (let ((stats (symbol-value 'gnus-agent-expire-stats)))
3491 (incf (nth 2 stats) bytes-freed)
3492 (incf (nth 1 stats) files-deleted)
3493 (incf (nth 0 stats) nov-entries-deleted)))
3495 (gnus-agent-update-files-total-fetched-for group (- size-files-deleted)))))))
3497 (defun gnus-agent-expire (&optional articles group force)
3498 "Expire all old articles.
3499 If you want to force expiring of certain articles, this function can
3500 take ARTICLES, GROUP and FORCE parameters as well.
3502 The articles on which the expiration process runs are selected as follows:
3503 if ARTICLES is null, all read and unmarked articles.
3504 if ARTICLES is t, all articles.
3505 if ARTICLES is a list, just those articles.
3506 Setting GROUP will limit expiration to that group.
3507 FORCE is equivalent to setting the expiration predicates to true."
3511 (gnus-agent-expire-group group articles force)
3512 (if (or (not (eq articles t))
3513 (yes-or-no-p "Are you sure that you want to expire all \
3514 articles in every agentized group? "))
3515 (let ((methods (gnus-agent-covered-methods))
3516 ;; Bind gnus-agent-expire-current-dirs to enable tracking
3517 ;; of agent directories.
3518 (gnus-agent-expire-current-dirs nil)
3519 ;; Bind gnus-agent-expire-stats to enable tracking of
3520 ;; expiration statistics across all groups
3521 (gnus-agent-expire-stats (list 0 0 0.0))
3522 gnus-command-method overview orig)
3523 (setq overview (gnus-get-buffer-create " *expire overview*"))
3525 (while (setq gnus-command-method (pop methods))
3526 (let ((active-file (gnus-agent-lib-file "active")))
3527 (when (file-exists-p active-file)
3529 (nnheader-insert-file-contents active-file)
3530 (gnus-active-to-gnus-format
3532 (setq orig (gnus-make-hashtable
3533 (count-lines (point-min) (point-max))))))
3534 (dolist (expiring-group (gnus-groups-from-server
3535 gnus-command-method))
3537 (gnus-gethash-safe expiring-group orig)))
3541 (gnus-agent-expire-group-1
3542 expiring-group overview active articles force))))))))
3543 (kill-buffer overview))
3544 (gnus-agent-expire-unagentized-dirs)
3545 (gnus-message 4 "%s" (gnus-agent-expire-done-message))))))
3547 (defun gnus-agent-expire-done-message ()
3548 (if (and (> gnus-verbose 4)
3549 (boundp 'gnus-agent-expire-stats))
3550 (let* ((stats (symbol-value 'gnus-agent-expire-stats))
3551 (size (nth 2 stats))
3552 (units '(B KB MB GB)))
3553 (while (and (> size 1024.0)
3555 (setq size (/ size 1024.0)
3558 (format "Expiry recovered %d NOV entries, deleted %d files,\
3565 (defun gnus-agent-expire-unagentized-dirs ()
3566 (when (and gnus-agent-expire-unagentized-dirs
3567 (boundp 'gnus-agent-expire-current-dirs))
3568 (let* ((keep (gnus-make-hashtable))
3569 ;; Formally bind gnus-agent-expire-current-dirs so that the
3570 ;; compiler will not complain about free references.
3571 (gnus-agent-expire-current-dirs
3572 (symbol-value 'gnus-agent-expire-current-dirs))
3574 (file-name-coding-system nnmail-pathname-coding-system))
3576 (gnus-sethash gnus-agent-directory t keep)
3577 (while gnus-agent-expire-current-dirs
3578 (setq dir (pop gnus-agent-expire-current-dirs))
3579 (when (and (stringp dir)
3580 (file-directory-p dir))
3581 (while (not (gnus-gethash dir keep))
3582 (gnus-sethash dir t keep)
3583 (setq dir (file-name-directory (directory-file-name dir))))))
3590 "Given a directory, check it and its subdirectories for
3591 membership in the keep hash. If it isn't found, add
3593 (let ((files (directory-files d))
3595 (while (setq file (pop files))
3596 (cond ((equal file ".") ; Ignore self
3598 ((equal file "..") ; Ignore parent
3600 ((equal file ".overview")
3601 ;; Directory must contain .overview to be
3602 ;; agent's cache of a group.
3603 (let ((d (file-name-as-directory d))
3605 ;; Search ancestor's for last directory NOT
3606 ;; found in keep hash.
3607 (while (not (gnus-gethash
3608 (setq d (file-name-directory d)) keep))
3610 d (directory-file-name d)))
3611 ;; if ANY ancestor was NOT in keep hash and
3612 ;; it it's already in to-remove, add it to
3615 (not (member r to-remove)))
3616 (push r to-remove))))
3617 ((file-directory-p (setq file (nnheader-concat d file)))
3618 (funcall checker file)))))))))
3619 (funcall checker (expand-file-name gnus-agent-directory))
3621 (when (and to-remove
3622 (or gnus-expert-user
3624 "gnus-agent-expire has identified local directories that are\
3625 not currently required by any agentized group. Do you wish to consider\
3628 (let ((dir (pop to-remove)))
3629 (if (or gnus-expert-user
3630 (gnus-y-or-n-p (format "Delete %s? " dir)))
3631 (let* (delete-recursive
3637 (if (file-directory-p f-or-d)
3639 (delete-directory f-or-d)
3641 (setq files (directory-files f-or-d))
3643 (setq f (pop files))
3644 (or (member f '("." ".."))
3645 (funcall delete-recursive
3648 (delete-directory f-or-d)))
3649 (delete-file f-or-d)))))))
3650 (funcall delete-recursive dir))))))))))
3653 (defun gnus-agent-batch ()
3654 "Start Gnus, send queue and fetch session."
3656 (let ((init-file-user "")
3657 (gnus-always-read-dribble-file t))
3659 (let ((gnus-agent-confirmation-function 'gnus-agent-batch-confirmation))
3660 (gnus-group-send-queue)
3661 (gnus-agent-fetch-session)))
3663 (defun gnus-agent-unread-articles (group)
3664 (let* ((read (gnus-info-read (gnus-get-info group)))
3665 (known (gnus-agent-load-alist group))
3667 (tail-unread unread))
3668 (while (and known read)
3669 (let ((candidate (car (pop known))))
3670 (while (let* ((range (car read))
3671 (min (if (numberp range) range (car range)))
3672 (max (if (numberp range) range (cdr range))))
3673 (cond ((or (not min)
3675 (gnus-agent-append-to-list tail-unread candidate)
3678 (setq read (cdr read))
3679 ;; return t so that I always loop one more
3680 ;; time. If I just iterated off the end of
3681 ;; read, min will become nil and the current
3682 ;; candidate will be added to the unread list.
3685 (gnus-agent-append-to-list tail-unread (car (pop known))))
3688 (defun gnus-agent-uncached-articles (articles group &optional cached-header)
3689 "Restrict ARTICLES to numbers already fetched.
3690 Returns a sublist of ARTICLES that excludes those article ids in GROUP
3691 that have already been fetched.
3692 If CACHED-HEADER is nil, articles are only excluded if the article itself
3695 ;; Logically equivalent to: (gnus-sorted-difference articles (mapcar
3696 ;; 'car gnus-agent-article-alist))
3698 ;; Functionally, I don't need to construct a temp list using mapcar.
3700 (if (and (or gnus-agent-cache (not gnus-plugged))
3701 (gnus-agent-load-alist group))
3702 (let* ((ref gnus-agent-article-alist)
3704 (uncached (list nil))
3705 (tail-uncached uncached))
3706 (while (and ref arts)
3707 (let ((v1 (car arts))
3709 (cond ((< v1 v2) ; v1 does not appear in the reference list
3710 (gnus-agent-append-to-list tail-uncached v1)
3711 (setq arts (cdr arts)))
3713 (unless (or cached-header (cdar ref)) ; v1 is already cached
3714 (gnus-agent-append-to-list tail-uncached v1))
3715 (setq arts (cdr arts))
3716 (setq ref (cdr ref)))
3717 (t ; reference article (v2) preceeds the list being filtered
3718 (setq ref (cdr ref))))))
3720 (gnus-agent-append-to-list tail-uncached (pop arts)))
3722 ;; if gnus-agent-load-alist fails, no articles are cached.
3725 (defun gnus-agent-retrieve-headers (articles group &optional fetch-old)
3727 (gnus-agent-create-buffer)
3728 (let ((gnus-decode-encoded-word-function 'identity)
3729 (gnus-decode-encoded-address-function 'identity)
3730 (file (gnus-agent-article-name ".overview" group))
3731 cached-articles uncached-articles
3732 (file-name-coding-system nnmail-pathname-coding-system))
3733 (gnus-make-directory (nnheader-translate-file-chars
3734 (file-name-directory file) t))
3736 ;; Populate temp buffer with known headers
3737 (when (file-exists-p file)
3738 (with-current-buffer gnus-agent-overview-buffer
3740 (let ((nnheader-file-coding-system
3741 gnus-agent-file-coding-system))
3742 (nnheader-insert-nov-file file (car articles)))))
3744 (if (setq uncached-articles (gnus-agent-uncached-articles articles group
3747 ;; Populate nntp-server-buffer with uncached headers
3748 (set-buffer nntp-server-buffer)
3750 (cond ((not (eq 'nov (let (gnus-agent) ; Turn off agent
3751 (gnus-retrieve-headers
3752 uncached-articles group))))
3753 (nnvirtual-convert-headers))
3754 ((eq 'nntp (car gnus-current-select-method))
3755 ;; The author of gnus-get-newsgroup-headers-xover
3756 ;; reports that the XOVER command is commonly
3757 ;; unreliable. The problem is that recently
3758 ;; posted articles may not be entered into the
3759 ;; NOV database in time to respond to my XOVER
3762 ;; I'm going to use his assumption that the NOV
3763 ;; database is updated in order of ascending
3764 ;; article ID. Therefore, a response containing
3765 ;; article ID N implies that all articles from 1
3766 ;; to N-1 are up-to-date. Therefore, missing
3767 ;; articles in that range have expired.
3769 (set-buffer nntp-server-buffer)
3770 (let* ((fetched-articles (list nil))
3771 (tail-fetched-articles fetched-articles)
3772 (min (cond ((numberp fetch-old)
3773 (max 1 (- (car articles) fetch-old)))
3778 (max (car (last articles))))
3780 ;; Get the list of articles that were fetched
3781 (goto-char (point-min))
3782 (let ((pm (point-max))
3784 (while (< (point) pm)
3785 (when (setq art (gnus-agent-read-article-number))
3786 (gnus-agent-append-to-list tail-fetched-articles art))
3789 ;; Clip this list to the headers that will
3790 ;; actually be returned
3791 (setq fetched-articles (gnus-list-range-intersection
3792 (cdr fetched-articles)
3795 ;; Clip the uncached articles list to exclude
3796 ;; IDs after the last FETCHED header. The
3797 ;; excluded IDs may be fetchable using HEAD.
3798 (if (car tail-fetched-articles)
3799 (setq uncached-articles
3800 (gnus-list-range-intersection
3802 (cons (car uncached-articles)
3803 (car tail-fetched-articles)))))
3805 ;; Create the list of articles that were
3806 ;; "successfully" fetched. Success, in this
3807 ;; case, means that the ID should not be
3808 ;; fetched again. In the case of an expired
3809 ;; article, the header will not be fetched.
3810 (setq uncached-articles
3811 (gnus-sorted-nunion fetched-articles
3815 ;; Erase the temp buffer
3816 (set-buffer gnus-agent-overview-buffer)
3819 ;; Copy the nntp-server-buffer to the temp buffer
3820 (set-buffer nntp-server-buffer)
3821 (copy-to-buffer gnus-agent-overview-buffer (point-min) (point-max))
3823 ;; Merge the temp buffer with the known headers (found on
3824 ;; disk in FILE) into the nntp-server-buffer
3825 (when uncached-articles
3826 (gnus-agent-braid-nov group uncached-articles file))
3828 ;; Save the new set of known headers to FILE
3829 (set-buffer nntp-server-buffer)
3830 (let ((coding-system-for-write
3831 gnus-agent-file-coding-system))
3832 (gnus-agent-check-overview-buffer)
3833 (write-region (point-min) (point-max) file nil 'silent))
3835 (gnus-agent-update-view-total-fetched-for group t)
3837 ;; Update the group's article alist to include the newly
3838 ;; fetched articles.
3839 (gnus-agent-load-alist group)
3840 (gnus-agent-save-alist group uncached-articles nil)
3843 ;; Copy the temp buffer to the nntp-server-buffer
3844 (set-buffer nntp-server-buffer)
3846 (insert-buffer-substring gnus-agent-overview-buffer)))
3849 (not (numberp fetch-old)))
3850 t ; Don't remove anything.
3851 (nnheader-nov-delete-outside-range
3852 (if fetch-old (max 1 (- (car articles) fetch-old))
3854 (car (last articles)))
3859 (defun gnus-agent-request-article (article group)
3860 "Retrieve ARTICLE in GROUP from the agent cache."
3861 (when (and gnus-agent
3862 (or gnus-agent-cache
3865 (let* ((gnus-command-method (gnus-find-method-for-group group))
3866 (file (gnus-agent-article-name (number-to-string article) group))
3867 (buffer-read-only nil)
3868 (file-name-coding-system nnmail-pathname-coding-system))
3869 (when (and (file-exists-p file)
3870 (> (nth 7 (file-attributes file)) 0))
3872 (gnus-kill-all-overlays)
3873 (let ((coding-system-for-read gnus-cache-coding-system))
3874 (insert-file-contents file))
3877 (defun gnus-agent-regenerate-group (group &optional reread)
3879 If REREAD is t, all articles in the .overview are marked as unread.
3880 If REREAD is a list, the specified articles will be marked as unread.
3881 In addition, their NOV entries in .overview will be refreshed using
3882 the articles' current headers.
3883 If REREAD is not nil, downloaded articles are marked as unread."
3885 (list (gnus-agent-read-group)
3888 (cursor-in-echo-area t)
3889 (echo-keystrokes 0))
3890 (message "Mark as unread: (n)one / (a)ll / all (d)ownloaded articles? (n) ")
3891 (setq c (read-char-exclusive))
3893 (cond ((or (eq c ?\r) (eq c ?n) (eq c ?N))
3895 ((or (eq c ?a) (eq c ?A))
3897 ((or (eq c ?d) (eq c ?D))
3898 (throw 'mark 'some)))
3899 (gnus-message 3 "Ignoring unexpected input")
3903 (gnus-message 5 "Regenerating in %s" (gnus-agent-decoded-group-name group))
3904 (let* ((gnus-command-method (or gnus-command-method
3905 (gnus-find-method-for-group group)))
3906 (file (gnus-agent-article-name ".overview" group))
3907 (dir (file-name-directory file))
3909 (file-name-coding-system nnmail-pathname-coding-system)
3910 (downloaded (if (file-exists-p dir)
3911 (sort (delq nil (mapcar (lambda (name)
3912 (and (not (file-directory-p (nnheader-concat dir name)))
3913 (string-to-number name)))
3914 (directory-files dir nil "^[0-9]+$" t)))
3916 (progn (gnus-make-directory dir) nil)))
3921 (mm-with-unibyte-buffer
3922 (if (file-exists-p file)
3923 (let ((nnheader-file-coding-system
3924 gnus-agent-file-coding-system))
3925 (nnheader-insert-file-contents file)))
3926 (set-buffer-modified-p nil)
3928 ;; Load the article IDs found in the overview file. As a
3929 ;; side-effect, validate the file contents.
3933 (goto-char (point-min))
3934 (while (< (point) (point-max))
3935 (cond ((and (looking-at "[0-9]+\t")
3936 (<= (- (match-end 0) (match-beginning 0)) 9))
3937 (push (read (current-buffer)) nov-arts)
3939 (let ((l1 (car nov-arts))
3940 (l2 (cadr nov-arts)))
3941 (cond ((and (listp reread) (memq l1 reread))
3943 (setq nov-arts (cdr nov-arts))
3944 (gnus-message 4 "gnus-agent-regenerate-group: NOV\
3945 entry of article %s deleted." l1))
3949 (gnus-message 3 "gnus-agent-regenerate-group: NOV\
3950 entries are NOT in ascending order.")
3951 ;; Don't sort now as I haven't verified
3952 ;; that every line begins with a number
3956 (gnus-message 4 "gnus-agent-regenerate-group: NOV\
3957 entries contained duplicate of article %s. Duplicate deleted." l1)
3959 (setq nov-arts (cdr nov-arts))))))
3961 (gnus-message 1 "gnus-agent-regenerate-group: NOV\
3962 entries contained line that did not begin with an article number. Deleted\
3964 (gnus-delete-line))))
3966 (gnus-message 5 "gnus-agent-regenerate-group: Sorting NOV\
3967 entries into ascending order.")
3968 (sort-numeric-fields 1 (point-min) (point-max))
3969 (setq nov-arts nil))))
3970 (gnus-agent-check-overview-buffer)
3972 ;; Construct a new article alist whose nodes match every header
3973 ;; in the .overview file. As a side-effect, missing headers are
3974 ;; reconstructed from the downloaded article file.
3975 (while (or downloaded nov-arts)
3976 (cond ((and downloaded
3978 (> (car downloaded) (car nov-arts))))
3979 ;; This entry is missing from the overview file
3980 (gnus-message 3 "Regenerating NOV %s %d..."
3981 (gnus-agent-decoded-group-name group)
3983 (let ((file (concat dir (number-to-string (car downloaded)))))
3984 (mm-with-unibyte-buffer
3985 (nnheader-insert-file-contents file)
3986 (nnheader-remove-body)
3987 (setq header (nnheader-parse-naked-head)))
3988 (mail-header-set-number header (car downloaded))
3990 (let ((key (concat "^" (int-to-string (car nov-arts))
3992 (or (re-search-backward key nil t)
3993 (re-search-forward key))
3995 (goto-char (point-min)))
3996 (nnheader-insert-nov header))
3997 (setq nov-arts (cons (car downloaded) nov-arts)))
3998 ((eq (car downloaded) (car nov-arts))
3999 ;; This entry in the overview has been downloaded
4000 (push (cons (car downloaded)
4002 (nth 5 (file-attributes
4003 (concat dir (number-to-string
4004 (car downloaded))))))) alist)
4005 (setq downloaded (cdr downloaded))
4006 (setq nov-arts (cdr nov-arts)))
4008 ;; This entry in the overview has not been downloaded
4009 (push (cons (car nov-arts) nil) alist)
4010 (setq nov-arts (cdr nov-arts)))))
4012 ;; When gnus-agent-consider-all-articles is set,
4013 ;; gnus-agent-regenerate-group should NOT remove article IDs from
4014 ;; the alist. Those IDs serve as markers to indicate that an
4015 ;; attempt has been made to fetch that article's header.
4017 ;; When gnus-agent-consider-all-articles is NOT set,
4018 ;; gnus-agent-regenerate-group can remove the article ID of every
4019 ;; article (with the exception of the last ID in the list - it's
4020 ;; special) that no longer appears in the overview. In this
4021 ;; situtation, the last article ID in the list implies that it,
4022 ;; and every article ID preceeding it, have been fetched from the
4025 (if gnus-agent-consider-all-articles
4026 ;; Restore all article IDs that were not found in the overview file.
4027 (let* ((n (cons nil alist))
4029 (o (gnus-agent-load-alist group)))
4031 (let ((nID (caadr n))
4034 (setq n (setcdr n (list (list oID))))
4037 (setcdr n (cons (list oID) (cdr n)))
4043 (setq n (cdr n))))))
4044 (setq alist (cdr merged)))
4045 ;; Restore the last article ID if it is not already in the new alist
4046 (let ((n (last alist))
4047 (o (last (gnus-agent-load-alist group))))
4051 (push (cons (caar o) nil) alist))
4052 ((< (caar n) (caar o))
4053 (setcdr n (list (car o)))))))
4055 (let ((inhibit-quit t))
4056 (if (setq regenerated (buffer-modified-p))
4057 (let ((coding-system-for-write gnus-agent-file-coding-system))
4058 (write-region (point-min) (point-max) file nil 'silent)))
4060 (setq regenerated (or regenerated
4061 (and reread gnus-agent-article-alist)
4062 (not (equal alist gnus-agent-article-alist))))
4064 (setq gnus-agent-article-alist alist)
4067 (gnus-agent-save-alist group)
4069 ;; I have to alter the group's active range NOW as
4070 ;; gnus-make-ascending-articles-unread will use it to
4071 ;; recalculate the number of unread articles in the group
4073 (let ((group (gnus-group-real-name group))
4074 (group-active (or (gnus-active group)
4075 (gnus-activate-group group))))
4076 (gnus-agent-possibly-alter-active group group-active)))))
4078 (when (and reread gnus-agent-article-alist)
4079 (gnus-agent-synchronize-group-flags
4084 (delq nil (mapcar (function (lambda (c)
4085 (cond ((eq reread t)
4089 gnus-agent-article-alist)))
4091 gnus-command-method)
4094 (gnus-agent-update-files-total-fetched-for group nil)))
4100 (defun gnus-agent-regenerate (&optional clean reread)
4101 "Regenerate all agent covered files.
4102 If CLEAN, obsolete (ignore)."
4105 (gnus-message 4 "Regenerating Gnus agent files...")
4106 (dolist (gnus-command-method (gnus-agent-covered-methods))
4107 (dolist (group (gnus-groups-from-server gnus-command-method))
4108 (setq regenerated (or (gnus-agent-regenerate-group group reread)
4110 (gnus-message 4 "Regenerating Gnus agent files...done")
4114 (defun gnus-agent-go-online (&optional force)
4115 "Switch servers into online status."
4116 (interactive (list t))
4117 (dolist (server gnus-opened-servers)
4118 (when (eq (nth 1 server) 'offline)
4119 (if (if (eq force 'ask)
4121 (format "Switch %s:%s into online status? "
4122 (caar server) (cadar server)))
4124 (setcar (nthcdr 1 server) 'close)))))
4126 (defun gnus-agent-toggle-group-plugged (group)
4127 "Toggle the status of the server of the current group."
4128 (interactive (list (gnus-group-group-name)))
4129 (let* ((method (gnus-find-method-for-group group))
4130 (status (cadr (assoc method gnus-opened-servers))))
4131 (if (eq status 'offline)
4132 (gnus-server-set-status method 'closed)
4133 (gnus-close-server method)
4134 (gnus-server-set-status method 'offline))
4135 (message "Turn %s:%s from %s to %s." (car method) (cadr method)
4136 (if (eq status 'offline) 'offline 'online)
4137 (if (eq status 'offline) 'online 'offline))))
4139 (defun gnus-agent-group-covered-p (group)
4140 (gnus-agent-method-p (gnus-group-method group)))
4142 (defun gnus-agent-update-files-total-fetched-for
4143 (group delta &optional method path)
4144 "Update, or set, the total disk space used by the articles that the
4146 (when gnus-agent-total-fetched-hashtb
4147 (gnus-agent-with-refreshed-group
4149 ;; if null, gnus-agent-group-pathname will calc method.
4150 (let* ((gnus-command-method method)
4151 (path (or path (gnus-agent-group-pathname group)))
4152 (entry (or (gnus-gethash path gnus-agent-total-fetched-hashtb)
4153 (gnus-sethash path (make-list 3 0)
4154 gnus-agent-total-fetched-hashtb)))
4155 (file-name-coding-system nnmail-pathname-coding-system))
4160 (while (setq file (pop delta))
4161 (incf sum (float (or (nth 7 (file-attributes
4165 (number-to-string file)
4168 (let ((sum (- (nth 2 entry)))
4169 (info (directory-files-and-attributes path nil "^-?[0-9]+$" t))
4171 (while (setq file (pop info))
4172 (incf sum (float (or (nth 8 file) 0))))
4175 (setq gnus-agent-need-update-total-fetched-for t)
4176 (incf (nth 2 entry) delta)))))
4178 (defun gnus-agent-update-view-total-fetched-for
4179 (group agent-over &optional method path)
4180 "Update, or set, the total disk space used by the .agentview and
4181 .overview files. These files are calculated separately as they can be
4183 (when gnus-agent-total-fetched-hashtb
4184 (gnus-agent-with-refreshed-group
4186 ;; if null, gnus-agent-group-pathname will calc method.
4187 (let* ((gnus-command-method method)
4188 (path (or path (gnus-agent-group-pathname group)))
4189 (entry (or (gnus-gethash path gnus-agent-total-fetched-hashtb)
4190 (gnus-sethash path (make-list 3 0)
4191 gnus-agent-total-fetched-hashtb)))
4192 (file-name-coding-system nnmail-pathname-coding-system)
4193 (size (or (nth 7 (file-attributes
4199 (setq gnus-agent-need-update-total-fetched-for t)
4200 (setf (nth (if agent-over 1 0) entry) size)))))
4202 (defun gnus-agent-total-fetched-for (group &optional method no-inhibit)
4203 "Get the total disk space used by the specified GROUP."
4204 (unless (equal group "dummy.group")
4205 (unless gnus-agent-total-fetched-hashtb
4206 (setq gnus-agent-total-fetched-hashtb (gnus-make-hashtable 1024)))
4208 ;; if null, gnus-agent-group-pathname will calc method.
4209 (let* ((gnus-command-method method)
4210 (path (gnus-agent-group-pathname group))
4211 (entry (gnus-gethash path gnus-agent-total-fetched-hashtb)))
4214 (let ((gnus-agent-inhibit-update-total-fetched-for (not no-inhibit)))
4216 (gnus-agent-update-view-total-fetched-for group nil method path)
4217 (gnus-agent-update-view-total-fetched-for group t method path)
4218 (gnus-agent-update-files-total-fetched-for group nil method path)))))))
4220 (provide 'gnus-agent)
4222 ;;; gnus-agent.el ends here