1 ;;; gnus-agent.el --- unplugged support for Gnus
2 ;; Copyright (C) 1997,98 Free Software Foundation, Inc.
4 ;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
5 ;; This file is part of GNU Emacs.
7 ;; GNU Emacs is free software; you can redistribute it and/or modify
8 ;; it under the terms of the GNU General Public License as published by
9 ;; the Free Software Foundation; either version 2, or (at your option)
12 ;; GNU Emacs is distributed in the hope that it will be useful,
13 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
14 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 ;; GNU General Public License for more details.
17 ;; You should have received a copy of the GNU General Public License
18 ;; along with GNU Emacs; see the file COPYING. If not, write to the
19 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
20 ;; Boston, MA 02111-1307, USA.
32 (require 'gnus-score))
34 (defcustom gnus-agent-directory (nnheader-concat gnus-directory "agent/")
35 "Where the Gnus agent will store its files."
39 (defcustom gnus-agent-plugged-hook nil
40 "Hook run when plugging into the network."
44 (defcustom gnus-agent-unplugged-hook nil
45 "Hook run when unplugging from the network."
49 (defcustom gnus-agent-handle-level gnus-level-subscribed
50 "Groups on levels higher than this variable will be ignored by the Agent."
54 (defcustom gnus-agent-expire-days 7
55 "Read articles older than this will be expired."
59 (defcustom gnus-agent-expire-all nil
60 "If non-nil, also expire unread, ticked and dormant articles.
61 If nil, only read articles will be expired."
65 (defcustom gnus-agent-group-mode-hook nil
66 "Hook run in Agent group minor modes."
70 (defcustom gnus-agent-summary-mode-hook nil
71 "Hook run in Agent summary minor modes."
75 (defcustom gnus-agent-server-mode-hook nil
76 "Hook run in Agent summary minor modes."
80 ;;; Internal variables
82 (defvar gnus-agent-history-buffers nil)
83 (defvar gnus-agent-buffer-alist nil)
84 (defvar gnus-agent-article-alist nil)
85 (defvar gnus-agent-group-alist nil)
86 (defvar gnus-agent-covered-methods nil)
87 (defvar gnus-category-alist nil)
88 (defvar gnus-agent-current-history nil)
89 (defvar gnus-agent-overview-buffer nil)
90 (defvar gnus-category-predicate-cache nil)
91 (defvar gnus-category-group-cache nil)
92 (defvar gnus-agent-spam-hashtb nil)
93 (defvar gnus-agent-file-name nil)
94 (defvar gnus-agent-send-mail-function nil)
95 (defvar gnus-agent-article-file-coding-system 'no-conversion)
97 (defconst gnus-agent-scoreable-headers
99 "subject" "from" "date" "message-id"
100 "references" "chars" "lines" "xref")
101 "Headers that are considered when scoring articles
102 for download via the Agent.")
105 (defvar gnus-headers)
112 (defun gnus-open-agent ()
114 (gnus-agent-read-servers)
116 (setq gnus-agent-overview-buffer
117 (gnus-get-buffer-create " *Gnus agent overview*"))
118 (add-hook 'gnus-group-mode-hook 'gnus-agent-mode)
119 (add-hook 'gnus-summary-mode-hook 'gnus-agent-mode)
120 (add-hook 'gnus-server-mode-hook 'gnus-agent-mode))
122 (gnus-add-shutdown 'gnus-close-agent 'gnus)
124 (defun gnus-close-agent ()
125 (setq gnus-agent-covered-methods nil
126 gnus-category-predicate-cache nil
127 gnus-category-group-cache nil
128 gnus-agent-spam-hashtb nil)
129 (gnus-kill-buffer gnus-agent-overview-buffer))
132 ;;; Utility functions
135 (defun gnus-agent-read-file (file)
136 "Load FILE and do a `read' there."
139 (nnheader-insert-file-contents file)
140 (goto-char (point-min))
141 (read (current-buffer)))))
143 (defsubst gnus-agent-method ()
144 (concat (symbol-name (car gnus-command-method)) "/"
145 (if (equal (cadr gnus-command-method) "")
147 (cadr gnus-command-method))))
149 (defsubst gnus-agent-directory ()
150 "Path of the Gnus agent directory."
151 (nnheader-concat gnus-agent-directory
152 (nnheader-translate-file-chars (gnus-agent-method)) "/"))
154 (defun gnus-agent-lib-file (file)
155 "The full path of the Gnus agent library FILE."
156 (concat (gnus-agent-directory) "agent.lib/" file))
158 ;;; Fetching setup functions.
160 (defun gnus-agent-start-fetch ()
161 "Initialize data structures for efficient fetching."
162 (gnus-agent-open-history)
163 (setq gnus-agent-current-history (gnus-agent-history-buffer)))
165 (defun gnus-agent-stop-fetch ()
166 "Save all data structures and clean up."
167 (gnus-agent-save-history)
168 (gnus-agent-close-history)
169 (setq gnus-agent-spam-hashtb nil)
171 (set-buffer nntp-server-buffer)
174 (defmacro gnus-agent-with-fetch (&rest forms)
178 (gnus-agent-start-fetch)
180 (gnus-agent-stop-fetch)))
182 (put 'gnus-agent-with-fetch 'lisp-indent-function 0)
183 (put 'gnus-agent-with-fetch 'edebug-form-spec '(body))
189 (defvar gnus-agent-mode-hook nil
190 "Hook run when installing agent mode.")
192 (defvar gnus-agent-mode nil)
193 (defvar gnus-agent-mode-status '(gnus-agent-mode " Plugged"))
195 (defun gnus-agent-mode ()
196 "Minor mode for providing a agent support in Gnus buffers."
197 (let* ((buffer (progn (string-match "^gnus-\\(.*\\)-mode$"
198 (symbol-name major-mode))
199 (match-string 1 (symbol-name major-mode))))
200 (mode (intern (format "gnus-agent-%s-mode" buffer))))
201 (set (make-local-variable 'gnus-agent-mode) t)
203 (set (make-local-variable mode) t)
205 (when (gnus-visual-p 'agent-menu 'menu)
206 (funcall (intern (format "gnus-agent-%s-make-menu-bar" buffer))))
207 (unless (assq 'gnus-agent-mode minor-mode-alist)
208 (push gnus-agent-mode-status minor-mode-alist))
209 (unless (assq mode minor-mode-map-alist)
210 (push (cons mode (symbol-value (intern (format "gnus-agent-%s-mode-map"
212 minor-mode-map-alist))
213 (when (eq major-mode 'gnus-group-mode)
214 (gnus-agent-toggle-plugged gnus-plugged))
215 (gnus-run-hooks 'gnus-agent-mode-hook
216 (intern (format "gnus-agent-%s-mode-hook" buffer)))))
218 (defvar gnus-agent-group-mode-map (make-sparse-keymap))
219 (gnus-define-keys gnus-agent-group-mode-map
220 "Ju" gnus-agent-fetch-groups
221 "Jc" gnus-enter-category-buffer
222 "Jj" gnus-agent-toggle-plugged
223 "Js" gnus-agent-fetch-session
224 "JS" gnus-group-send-drafts
225 "Ja" gnus-agent-add-group)
227 (defun gnus-agent-group-make-menu-bar ()
228 (unless (boundp 'gnus-agent-group-menu)
230 gnus-agent-group-menu gnus-agent-group-mode-map ""
232 ["Toggle plugged" gnus-agent-toggle-plugged t]
233 ["List categories" gnus-enter-category-buffer t]
234 ["Send drafts" gnus-group-send-drafts gnus-plugged]
236 ["All" gnus-agent-fetch-session gnus-plugged]
237 ["Group" gnus-agent-fetch-group gnus-plugged])))))
239 (defvar gnus-agent-summary-mode-map (make-sparse-keymap))
240 (gnus-define-keys gnus-agent-summary-mode-map
241 "Jj" gnus-agent-toggle-plugged
242 "J#" gnus-agent-mark-article
243 "J\M-#" gnus-agent-unmark-article
244 "@" gnus-agent-toggle-mark
245 "Jc" gnus-agent-catchup)
247 (defun gnus-agent-summary-make-menu-bar ()
248 (unless (boundp 'gnus-agent-summary-menu)
250 gnus-agent-summary-menu gnus-agent-summary-mode-map ""
252 ["Toggle plugged" gnus-agent-toggle-plugged t]
253 ["Mark as downloadable" gnus-agent-mark-article t]
254 ["Unmark as downloadable" gnus-agent-unmark-article t]
255 ["Toggle mark" gnus-agent-toggle-mark t]
256 ["Catchup undownloaded" gnus-agent-catchup t]))))
258 (defvar gnus-agent-server-mode-map (make-sparse-keymap))
259 (gnus-define-keys gnus-agent-server-mode-map
260 "Jj" gnus-agent-toggle-plugged
261 "Ja" gnus-agent-add-server
262 "Jr" gnus-agent-remove-server)
264 (defun gnus-agent-server-make-menu-bar ()
265 (unless (boundp 'gnus-agent-server-menu)
267 gnus-agent-server-menu gnus-agent-server-mode-map ""
269 ["Toggle plugged" gnus-agent-toggle-plugged t]
270 ["Add" gnus-agent-add-server t]
271 ["Remove" gnus-agent-remove-server t]))))
273 (defun gnus-agent-toggle-plugged (plugged)
274 "Toggle whether Gnus is unplugged or not."
275 (interactive (list (not gnus-plugged)))
278 (setq gnus-plugged plugged)
279 (gnus-run-hooks 'gnus-agent-plugged-hook)
280 (setcar (cdr gnus-agent-mode-status) " Plugged"))
281 (gnus-agent-close-connections)
282 (setq gnus-plugged plugged)
283 (gnus-run-hooks 'gnus-agent-unplugged-hook)
284 (setcar (cdr gnus-agent-mode-status) " Unplugged"))
285 (set-buffer-modified-p t))
287 (defun gnus-agent-close-connections ()
288 "Close all methods covered by the Gnus agent."
289 (let ((methods gnus-agent-covered-methods))
291 (gnus-close-server (pop methods)))))
294 (defun gnus-unplugged ()
295 "Start Gnus unplugged."
297 (setq gnus-plugged nil)
301 (defun gnus-plugged ()
302 "Start Gnus plugged."
304 (setq gnus-plugged t)
308 (defun gnus-agentize ()
309 "Allow Gnus to be an offline newsreader.
310 The normal usage of this command is to put the following as the
311 last form in your `.gnus.el' file:
315 This will modify the `gnus-before-startup-hook', `gnus-post-method',
316 and `message-send-mail-function' variables, and install the Gnus
317 agent minor mode in all Gnus buffers."
320 (add-hook 'gnus-setup-news-hook 'gnus-agent-queue-setup)
321 (unless gnus-agent-send-mail-function
322 (setq gnus-agent-send-mail-function message-send-mail-function
323 message-send-mail-function 'gnus-agent-send-mail))
324 (unless gnus-agent-covered-methods
325 (setq gnus-agent-covered-methods (list gnus-select-method))))
327 (defun gnus-agent-queue-setup ()
328 "Make sure the queue group exists."
329 (unless (gnus-gethash "nndraft:queue" gnus-newsrc-hashtb)
330 (gnus-request-create-group "queue" '(nndraft ""))
331 (let ((gnus-level-default-subscribed 1))
332 (gnus-subscribe-group "nndraft:queue" nil '(nndraft "")))
333 (gnus-group-set-parameter
334 "nndraft:queue" 'gnus-dummy '((gnus-draft-mode)))))
336 (defun gnus-agent-send-mail ()
338 (funcall gnus-agent-send-mail-function)
339 (goto-char (point-min))
341 (concat "^" (regexp-quote mail-header-separator) "\n"))
343 (gnus-agent-insert-meta-information 'mail)
344 (gnus-request-accept-article "nndraft:queue" nil t t)))
346 (defun gnus-agent-insert-meta-information (type &optional method)
347 "Insert meta-information into the message that says how it's to be posted.
348 TYPE can be either `mail' or `news'. If the latter METHOD can
351 (message-remove-header gnus-agent-meta-information-header)
352 (goto-char (point-min))
353 (insert gnus-agent-meta-information-header ": "
354 (symbol-name type) " " (format "%S" method)
357 (while (search-backward "\n" nil t)
358 (replace-match "\\n" t t))))
361 ;;; Group mode commands
364 (defun gnus-agent-fetch-groups (n)
365 "Put all new articles in the current groups into the Agent."
367 (gnus-group-iterate n 'gnus-agent-fetch-group))
369 (defun gnus-agent-fetch-group (group)
370 "Put all new articles in GROUP into the Agent."
371 (interactive (list (gnus-group-group-name)))
373 (error "No group on the current line"))
374 (let ((gnus-command-method (gnus-find-method-for-group group)))
375 (gnus-agent-with-fetch
376 (gnus-agent-fetch-group-1 group gnus-command-method)
377 (gnus-message 5 "Fetching %s...done" group))))
379 (defun gnus-agent-add-group (category arg)
380 "Add the current group to an agent category."
386 (mapcar (lambda (cat) (list (symbol-name (car cat))))
390 (let ((cat (assq category gnus-category-alist))
392 (gnus-group-iterate arg
394 (when (cadddr (setq c (gnus-group-category group)))
395 (setf (cadddr c) (delete group (cadddr c))))
396 (push group groups)))
397 (setf (cadddr cat) (nconc (cadddr cat) groups))
398 (gnus-category-write)))
401 ;;; Server mode commands
404 (defun gnus-agent-add-server (server)
405 "Enroll SERVER in the agent program."
406 (interactive (list (gnus-server-server-name)))
408 (error "No server on the current line"))
409 (let ((method (gnus-server-get-method nil (gnus-server-server-name))))
410 (when (member method gnus-agent-covered-methods)
411 (error "Server already in the agent program"))
412 (push method gnus-agent-covered-methods)
413 (gnus-agent-write-servers)
414 (message "Entered %s into the Agent" server)))
416 (defun gnus-agent-remove-server (server)
417 "Remove SERVER from the agent program."
418 (interactive (list (gnus-server-server-name)))
420 (error "No server on the current line"))
421 (let ((method (gnus-server-get-method nil (gnus-server-server-name))))
422 (unless (member method gnus-agent-covered-methods)
423 (error "Server not in the agent program"))
424 (setq gnus-agent-covered-methods
425 (delete method gnus-agent-covered-methods))
426 (gnus-agent-write-servers)
427 (message "Removed %s from the agent" server)))
429 (defun gnus-agent-read-servers ()
430 "Read the alist of covered servers."
431 (setq gnus-agent-covered-methods
432 (gnus-agent-read-file
433 (nnheader-concat gnus-agent-directory "lib/servers"))))
435 (defun gnus-agent-write-servers ()
436 "Write the alist of covered servers."
437 (with-temp-file (nnheader-concat gnus-agent-directory "lib/servers")
438 (prin1 gnus-agent-covered-methods (current-buffer))))
444 (defun gnus-agent-mark-article (n &optional unmark)
445 "Mark the next N articles as downloadable.
446 If N is negative, mark backward instead. If UNMARK is non-nil, remove
447 the mark instead. The difference between N and the actual number of
448 articles marked is returned."
450 (let ((backward (< n 0))
455 (gnus-summary-set-agent-mark
456 (gnus-summary-article-number) unmark)
457 (zerop (gnus-summary-next-subject (if backward -1 1) nil t))))
460 (gnus-message 7 "No more articles"))
461 (gnus-summary-recenter)
462 (gnus-summary-position-point)
465 (defun gnus-agent-unmark-article (n)
466 "Remove the downloadable mark from the next N articles.
467 If N is negative, unmark backward instead. The difference between N and
468 the actual number of articles unmarked is returned."
470 (gnus-agent-mark-article n t))
472 (defun gnus-agent-toggle-mark (n)
473 "Toggle the downloadable mark from the next N articles.
474 If N is negative, toggle backward instead. The difference between N and
475 the actual number of articles toggled is returned."
477 (gnus-agent-mark-article n 'toggle))
479 (defun gnus-summary-set-agent-mark (article &optional unmark)
480 "Mark ARTICLE as downloadable."
481 (let ((unmark (if (and (not (null unmark)) (not (eq t unmark)))
482 (memq article gnus-newsgroup-downloadable)
486 (setq gnus-newsgroup-downloadable
487 (delq article gnus-newsgroup-downloadable))
488 (push article gnus-newsgroup-undownloaded))
489 (setq gnus-newsgroup-undownloaded
490 (delq article gnus-newsgroup-undownloaded))
491 (push article gnus-newsgroup-downloadable))
492 (gnus-summary-update-mark
493 (if unmark gnus-undownloaded-mark gnus-downloadable-mark)
496 (defun gnus-agent-get-undownloaded-list ()
497 "Mark all unfetched articles as read."
498 (let ((gnus-command-method (gnus-find-method-for-group gnus-newsgroup-name)))
499 (when (and (not gnus-plugged)
500 (gnus-agent-method-p gnus-command-method))
501 (gnus-agent-load-alist gnus-newsgroup-name)
502 (let ((articles gnus-newsgroup-unreads)
504 (while (setq article (pop articles))
505 (unless (or (cdr (assq article gnus-agent-article-alist))
506 (memq article gnus-newsgroup-downloadable))
507 (push article gnus-newsgroup-undownloaded)))))))
509 (defun gnus-agent-catchup ()
510 "Mark all undownloaded articles as read."
513 (while gnus-newsgroup-undownloaded
514 (gnus-summary-mark-article
515 (pop gnus-newsgroup-undownloaded) gnus-catchup-mark)))
516 (gnus-summary-position-point))
519 ;;; Internal functions
522 (defun gnus-agent-save-active (method)
523 (when (gnus-agent-method-p method)
524 (let* ((gnus-command-method method)
525 (file (gnus-agent-lib-file "active")))
526 (gnus-make-directory (file-name-directory file))
527 (let ((coding-system-for-write gnus-agent-article-file-coding-system))
528 (write-region (point-min) (point-max) file nil 'silent))
529 (when (file-exists-p (gnus-agent-lib-file "groups"))
530 (delete-file (gnus-agent-lib-file "groups"))))))
532 (defun gnus-agent-save-groups (method)
533 (let* ((gnus-command-method method)
534 (file (gnus-agent-lib-file "groups")))
535 (gnus-make-directory (file-name-directory file))
536 (write-region (point-min) (point-max) file nil 'silent))
537 (when (file-exists-p (gnus-agent-lib-file "active"))
538 (delete-file (gnus-agent-lib-file "active"))))
540 (defun gnus-agent-save-group-info (method group active)
541 (when (gnus-agent-method-p method)
542 (let* ((gnus-command-method method)
543 (file (if nntp-server-list-active-group
544 (gnus-agent-lib-file "active")
545 (gnus-agent-lib-file "groups"))))
546 (gnus-make-directory (file-name-directory file))
548 (when (file-exists-p file)
549 (nnheader-insert-file-contents file))
550 (goto-char (point-min))
551 (if nntp-server-list-active-group
553 (when (re-search-forward
554 (concat "^" (regexp-quote group) " ") nil t)
556 (insert group " " (number-to-string (cdr active)) " "
557 (number-to-string (car active)) "\n"))
558 (when (re-search-forward (concat (regexp-quote group) " ") nil t)
560 (insert-buffer-substring nntp-server-buffer))))))
562 (defun gnus-agent-group-path (group)
563 "Translate GROUP into a path."
564 (if nnmail-use-long-file-names
565 (gnus-group-real-name group)
566 (nnheader-replace-chars-in-string
567 (nnheader-translate-file-chars (gnus-group-real-name group))
572 (defun gnus-agent-method-p (method)
573 "Say whether METHOD is covered by the agent."
574 (member method gnus-agent-covered-methods))
576 (defun gnus-agent-get-function (method)
577 (if (and (not gnus-plugged)
578 (gnus-agent-method-p method))
584 ;;; History functions
586 (defun gnus-agent-history-buffer ()
587 (cdr (assoc (gnus-agent-method) gnus-agent-history-buffers)))
589 (defun gnus-agent-open-history ()
591 (push (cons (gnus-agent-method)
592 (set-buffer (gnus-get-buffer-create
593 (format " *Gnus agent %s history*"
594 (gnus-agent-method)))))
595 gnus-agent-history-buffers)
598 (let ((file (gnus-agent-lib-file "history")))
599 (when (file-exists-p file)
601 (set (make-local-variable 'gnus-agent-file-name) file))))
603 (defun gnus-agent-save-history ()
605 (set-buffer gnus-agent-current-history)
606 (gnus-make-directory (file-name-directory gnus-agent-file-name))
607 (write-region (1+ (point-min)) (point-max)
608 gnus-agent-file-name nil 'silent)))
610 (defun gnus-agent-close-history ()
611 (when (gnus-buffer-live-p gnus-agent-current-history)
612 (kill-buffer gnus-agent-current-history)
613 (setq gnus-agent-history-buffers
614 (delq (assoc (gnus-agent-method) gnus-agent-history-buffers)
615 gnus-agent-history-buffers))))
617 (defun gnus-agent-enter-history (id group-arts date)
619 (set-buffer gnus-agent-current-history)
620 (goto-char (point-max))
621 (insert id "\t" (number-to-string date) "\t")
623 (insert (caar group-arts) " " (number-to-string (cdr (pop group-arts)))
627 (defun gnus-agent-article-in-history-p (id)
629 (set-buffer (gnus-agent-history-buffer))
630 (goto-char (point-min))
631 (search-forward (concat "\n" id "\t") nil t)))
633 (defun gnus-agent-history-path (id)
635 (set-buffer (gnus-agent-history-buffer))
636 (goto-char (point-min))
637 (when (search-forward (concat "\n" id "\t") nil t)
638 (let ((method (gnus-agent-method)))
640 (while (not (numberp (setq group (read (current-buffer)))))
641 (push (concat method "/" group) paths))
642 (nreverse paths))))))
648 (defun gnus-agent-fetch-articles (group articles)
649 "Fetch ARTICLES from GROUP and put them into the Agent."
651 ;; Prune off articles that we have already fetched.
653 (cdr (assq (car articles) gnus-agent-article-alist)))
655 (let ((arts articles))
657 (if (cdr (assq (cadr arts) gnus-agent-article-alist))
658 (setcdr arts (cddr arts))
659 (setq arts (cdr arts)))))
662 (gnus-agent-directory)
663 (gnus-agent-group-path group) "/"))
664 (date (time-to-days (current-time)))
667 (gnus-make-directory dir)
668 (gnus-message 7 "Fetching articles for %s..." group)
669 ;; Fetch the articles from the backend.
670 (if (gnus-check-backend-function 'retrieve-articles group)
671 (setq pos (gnus-retrieve-articles articles group))
674 (while (setq article (pop articles))
675 (when (gnus-request-article article group)
676 (goto-char (point-max))
677 (push (cons article (point)) pos)
678 (insert-buffer-substring nntp-server-buffer)))
679 (copy-to-buffer nntp-server-buffer (point-min) (point-max))
680 (setq pos (nreverse pos)))))
681 ;; Then save these articles into the Agent.
683 (set-buffer nntp-server-buffer)
685 (narrow-to-region (cdar pos) (or (cdadr pos) (point-max)))
686 (goto-char (point-min))
687 (when (search-forward "\n\n" nil t)
688 (when (search-backward "\nXrefs: " nil t)
689 ;; Handle crossposting.
690 (skip-chars-forward "^ ")
691 (skip-chars-forward " ")
693 (while (looking-at "\\([^: \n]+\\):\\([0-9]+\\) +")
694 (push (cons (buffer-substring (match-beginning 1)
696 (buffer-substring (match-beginning 2)
699 (goto-char (match-end 0)))
700 (gnus-agent-crosspost crosses (caar pos))))
701 (goto-char (point-min))
702 (if (not (re-search-forward "^Message-ID: *<\\([^>\n]+\\)>" nil t))
703 (setq id "No-Message-ID-in-article")
704 (setq id (buffer-substring (match-beginning 1) (match-end 1))))
705 (let ((coding-system-for-write
706 gnus-agent-article-file-coding-system))
707 (write-region (point-min) (point-max)
708 (concat dir (number-to-string (caar pos)))
710 (when (setq elem (assq (caar pos) gnus-agent-article-alist))
712 (gnus-agent-enter-history
713 id (or crosses (list (cons group (caar pos)))) date)
716 (gnus-agent-save-alist group)))))
718 (defun gnus-agent-crosspost (crosses article)
719 (let (gnus-agent-article-alist group alist beg end)
721 (set-buffer gnus-agent-overview-buffer)
722 (when (nnheader-find-nov-line article)
725 (setq end (progn (forward-line 1) (point)))))
727 (setq group (caar crosses))
728 (unless (setq alist (assoc group gnus-agent-group-alist))
729 (push (setq alist (list group (gnus-agent-load-alist (caar crosses))))
730 gnus-agent-group-alist))
731 (setcdr alist (cons (cons (cdar crosses) t) (cdr alist)))
733 (set-buffer (gnus-get-buffer-create (format " *Gnus agent overview %s*"
735 (when (= (point-max) (point-min))
736 (push (cons group (current-buffer)) gnus-agent-buffer-alist)
738 (nnheader-insert-file-contents
739 (gnus-agent-article-name ".overview" group))))
740 (nnheader-find-nov-line (string-to-number (cdar crosses)))
741 (insert (string-to-number (cdar crosses)))
742 (insert-buffer-substring gnus-agent-overview-buffer beg end))
745 (defun gnus-agent-flush-cache ()
747 (while gnus-agent-buffer-alist
748 (set-buffer (cdar gnus-agent-buffer-alist))
749 (write-region (point-min) (point-max)
750 (gnus-agent-article-name ".overview"
751 (caar gnus-agent-buffer-alist))
753 (pop gnus-agent-buffer-alist))
754 (while gnus-agent-group-alist
755 (with-temp-file (caar gnus-agent-group-alist)
756 (princ (cdar gnus-agent-group-alist))
758 (pop gnus-agent-group-alist))))
760 (defun gnus-agent-fetch-headers (group &optional force)
761 (let ((articles (if (gnus-agent-load-alist group)
762 (gnus-sorted-intersection
763 (gnus-list-of-unread-articles group)
764 (gnus-uncompress-range
765 (cons (1+ (caar (last gnus-agent-article-alist)))
766 (cdr (gnus-active group)))))
767 (gnus-list-of-unread-articles group))))
770 (gnus-message 7 "Fetching headers for %s..." group)
772 (set-buffer nntp-server-buffer)
773 (unless (eq 'nov (gnus-retrieve-headers articles group))
774 (nnvirtual-convert-headers))
775 ;; Save these headers for later processing.
776 (copy-to-buffer gnus-agent-overview-buffer (point-min) (point-max))
779 (setq file (gnus-agent-article-name ".overview" group)))
780 (gnus-agent-braid-nov group articles file))
781 (gnus-make-directory (nnheader-translate-file-chars
782 (file-name-directory file)))
783 (write-region (point-min) (point-max) file nil 'silent)
784 (gnus-agent-save-alist group articles nil)
785 (gnus-agent-enter-history
786 "last-header-fetched-for-session"
787 (list (cons group (nth (- (length articles) 1) articles)))
788 (time-to-days (current-time)))
791 (defsubst gnus-agent-copy-nov-line (article)
793 (set-buffer gnus-agent-overview-buffer)
795 (if (eq article (read (current-buffer)))
796 (setq e (progn (forward-line 1) (point)))
800 (set-buffer nntp-server-buffer)
801 (insert-buffer-substring gnus-agent-overview-buffer b e)))
803 (defun gnus-agent-braid-nov (group articles file)
804 (set-buffer gnus-agent-overview-buffer)
805 (goto-char (point-min))
806 (set-buffer nntp-server-buffer)
808 (nnheader-insert-file-contents file)
809 (goto-char (point-max))
810 (if (or (= (point-min) (point-max))
813 (< (read (current-buffer)) (car articles))))
814 ;; We have only headers that are after the older headers,
815 ;; so we just append them.
817 (goto-char (point-max))
818 (insert-buffer-substring gnus-agent-overview-buffer))
819 ;; We do it the hard way.
820 (nnheader-find-nov-line (car articles))
821 (gnus-agent-copy-nov-line (car articles))
825 (while (and (not (eobp))
826 (< (read (current-buffer)) (car articles)))
830 (gnus-agent-copy-nov-line (car articles))
831 (setq articles (cdr articles))))
834 (set-buffer gnus-agent-overview-buffer)
837 (set-buffer nntp-server-buffer)
838 (insert-buffer-substring gnus-agent-overview-buffer b e)))))
840 (defun gnus-agent-load-alist (group &optional dir)
841 "Load the article-state alist for GROUP."
842 (setq gnus-agent-article-alist
843 (gnus-agent-read-file
845 (concat dir ".agentview")
846 (gnus-agent-article-name ".agentview" group)))))
848 (defun gnus-agent-save-alist (group &optional articles state dir)
849 "Save the article-state alist for GROUP."
850 (with-temp-file (if dir
851 (concat dir ".agentview")
852 (gnus-agent-article-name ".agentview" group))
853 (princ (setq gnus-agent-article-alist
854 (nconc gnus-agent-article-alist
855 (mapcar (lambda (article) (cons article state))
860 (defun gnus-agent-article-name (article group)
861 (concat (gnus-agent-directory) (gnus-agent-group-path group) "/"
862 (if (stringp article) article (string-to-number article))))
865 (defun gnus-agent-batch-fetch ()
866 "Start Gnus and fetch session."
869 (gnus-agent-fetch-session)
872 (defun gnus-agent-fetch-session ()
873 "Fetch all articles and headers that are eligible for fetching."
875 (unless gnus-agent-covered-methods
876 (error "No servers are covered by the Gnus agent"))
878 (error "Can't fetch articles while Gnus is unplugged"))
879 (let ((methods gnus-agent-covered-methods)
880 groups group gnus-command-method)
883 (setq gnus-command-method (car methods))
884 (when (or (gnus-server-opened gnus-command-method)
885 (gnus-open-server gnus-command-method))
886 (setq groups (gnus-groups-from-server (car methods)))
887 (gnus-agent-with-fetch
888 (while (setq group (pop groups))
889 (when (<= (gnus-group-level group) gnus-agent-handle-level)
890 (gnus-agent-fetch-group-1 group gnus-command-method)))))
892 (gnus-message 6 "Finished fetching articles into the Gnus agent"))))
894 (defun gnus-agent-fetch-group-1 (group method)
896 (let ((gnus-command-method method)
897 gnus-newsgroup-dependencies gnus-newsgroup-headers
898 gnus-newsgroup-scored gnus-headers gnus-score
899 gnus-use-cache articles arts
900 category predicate info marks score-param)
902 (when (and (or (gnus-active group) (gnus-activate-group group))
903 (setq articles (gnus-agent-fetch-headers group)))
904 ;; Parse them and see which articles we want to fetch.
905 (setq gnus-newsgroup-dependencies
906 (make-vector (length articles) 0))
907 ;; No need to call `gnus-get-newsgroup-headers-xover' with
908 ;; the entire .overview for group as we still have the just
909 ;; downloaded headers in `gnus-agent-overview-buffer'.
910 (let ((nntp-server-buffer gnus-agent-overview-buffer))
911 (setq gnus-newsgroup-headers
912 (gnus-get-newsgroup-headers-xover articles nil nil group)))
913 (setq category (gnus-group-category group))
916 (or (gnus-group-get-parameter group 'agent-predicate t)
918 ;; Do we want to download everything, or nothing?
919 (if (or (eq (caaddr predicate) 'gnus-agent-true)
920 (eq (caaddr predicate) 'gnus-agent-false))
922 (setq arts (symbol-value
923 (cadr (assoc (caaddr predicate)
924 '((gnus-agent-true articles)
925 (gnus-agent-false nil))))))
926 ;; No, we need to decide what we want.
928 (let ((score-method (or
929 (gnus-group-get-parameter group 'agent-score t)
932 (require 'gnus-score)
933 (if (eq score-method 'file)
935 (gnus-score-load-files
936 (gnus-all-score-files group)))
938 (while (setq list (car entries))
939 (push (car list) score-file)
940 (setq list (cdr list))
942 (when (member (caar list)
943 gnus-agent-scoreable-headers)
944 (push (car list) score-file))
945 (setq list (cdr list)))
947 (append score-param (list (nreverse score-file)))
948 score-file nil entries (cdr entries)))
950 (if (stringp (car score-method))
952 (list (list score-method)))))))
954 (gnus-score-headers score-param))
956 (while (setq gnus-headers (pop gnus-newsgroup-headers))
958 (or (cdr (assq (mail-header-number gnus-headers)
959 gnus-newsgroup-scored))
960 gnus-summary-default-score))
961 (when (funcall predicate)
962 (push (mail-header-number gnus-headers)
964 ;; Fetch the articles.
966 (gnus-agent-fetch-articles group arts)))
967 ;; Perhaps we have some additional articles to fetch.
968 (setq arts (assq 'download (gnus-info-marks
969 (setq info (gnus-get-info group)))))
971 (gnus-agent-fetch-articles
972 group (gnus-uncompress-range (cdr arts)))
973 (setq marks (delq arts (gnus-info-marks info)))
974 (gnus-info-set-marks info marks))))
977 ;;; Agent Category Mode
980 (defvar gnus-category-mode-hook nil
981 "Hook run in `gnus-category-mode' buffers.")
983 (defvar gnus-category-line-format " %(%20c%): %g\n"
984 "Format of category lines.")
986 (defvar gnus-category-mode-line-format "Gnus: %%b"
987 "The format specification for the category mode line.")
989 (defvar gnus-agent-short-article 100
990 "Articles that have fewer lines than this are short.")
992 (defvar gnus-agent-long-article 200
993 "Articles that have more lines than this are long.")
995 (defvar gnus-agent-low-score 0
996 "Articles that have a score lower than this have a low score.")
998 (defvar gnus-agent-high-score 0
999 "Articles that have a score higher than this have a high score.")
1002 ;;; Internal variables.
1004 (defvar gnus-category-buffer "*Agent Category*")
1006 (defvar gnus-category-line-format-alist
1007 `((?c gnus-tmp-name ?s)
1008 (?g gnus-tmp-groups ?d)))
1010 (defvar gnus-category-mode-line-format-alist
1011 `((?u user-defined ?s)))
1013 (defvar gnus-category-line-format-spec nil)
1014 (defvar gnus-category-mode-line-format-spec nil)
1016 (defvar gnus-category-mode-map nil)
1017 (put 'gnus-category-mode 'mode-class 'special)
1019 (unless gnus-category-mode-map
1020 (setq gnus-category-mode-map (make-sparse-keymap))
1021 (suppress-keymap gnus-category-mode-map)
1023 (gnus-define-keys gnus-category-mode-map
1024 "q" gnus-category-exit
1025 "k" gnus-category-kill
1026 "c" gnus-category-copy
1027 "a" gnus-category-add
1028 "p" gnus-category-edit-predicate
1029 "g" gnus-category-edit-groups
1030 "s" gnus-category-edit-score
1031 "l" gnus-category-list
1033 "\C-c\C-i" gnus-info-find-node
1034 "\C-c\C-b" gnus-bug))
1036 (defvar gnus-category-menu-hook nil
1037 "*Hook run after the creation of the menu.")
1039 (defun gnus-category-make-menu-bar ()
1040 (gnus-turn-off-edit-menu 'category)
1041 (unless (boundp 'gnus-category-menu)
1043 gnus-category-menu gnus-category-mode-map ""
1045 ["Add" gnus-category-add t]
1046 ["Kill" gnus-category-kill t]
1047 ["Copy" gnus-category-copy t]
1048 ["Edit predicate" gnus-category-edit-predicate t]
1049 ["Edit score" gnus-category-edit-score t]
1050 ["Edit groups" gnus-category-edit-groups t]
1051 ["Exit" gnus-category-exit t]))
1053 (gnus-run-hooks 'gnus-category-menu-hook)))
1055 (defun gnus-category-mode ()
1056 "Major mode for listing and editing agent categories.
1058 All normal editing commands are switched off.
1059 \\<gnus-category-mode-map>
1060 For more in-depth information on this mode, read the manual
1061 (`\\[gnus-info-find-node]').
1063 The following commands are available:
1065 \\{gnus-category-mode-map}"
1067 (when (gnus-visual-p 'category-menu 'menu)
1068 (gnus-category-make-menu-bar))
1069 (kill-all-local-variables)
1070 (gnus-simplify-mode-line)
1071 (setq major-mode 'gnus-category-mode)
1072 (setq mode-name "Category")
1073 (gnus-set-default-directory)
1074 (setq mode-line-process nil)
1075 (use-local-map gnus-category-mode-map)
1076 (buffer-disable-undo)
1077 (setq truncate-lines t)
1078 (setq buffer-read-only t)
1079 (gnus-run-hooks 'gnus-category-mode-hook))
1081 (defalias 'gnus-category-position-point 'gnus-goto-colon)
1083 (defun gnus-category-insert-line (category)
1084 (let* ((gnus-tmp-name (car category))
1085 (gnus-tmp-groups (length (cadddr category))))
1087 (gnus-add-text-properties
1091 (eval gnus-category-line-format-spec))
1092 (list 'gnus-category gnus-tmp-name))))
1094 (defun gnus-enter-category-buffer ()
1095 "Go to the Category buffer."
1097 (gnus-category-setup-buffer)
1098 (gnus-configure-windows 'category)
1099 (gnus-category-prepare))
1101 (defun gnus-category-setup-buffer ()
1102 (unless (get-buffer gnus-category-buffer)
1104 (set-buffer (gnus-get-buffer-create gnus-category-buffer))
1105 (gnus-category-mode))))
1107 (defun gnus-category-prepare ()
1108 (gnus-set-format 'category-mode)
1109 (gnus-set-format 'category t)
1110 (let ((alist gnus-category-alist)
1111 (buffer-read-only nil))
1114 (gnus-category-insert-line (pop alist)))
1115 (goto-char (point-min))
1116 (gnus-category-position-point)))
1118 (defun gnus-category-name ()
1119 (or (get-text-property (gnus-point-at-bol) 'gnus-category)
1120 (error "No category on the current line")))
1122 (defun gnus-category-read ()
1123 "Read the category alist."
1124 (setq gnus-category-alist
1125 (or (gnus-agent-read-file
1126 (nnheader-concat gnus-agent-directory "lib/categories"))
1127 (list (list 'default 'short nil nil)))))
1129 (defun gnus-category-write ()
1130 "Write the category alist."
1131 (setq gnus-category-predicate-cache nil
1132 gnus-category-group-cache nil)
1133 (with-temp-file (nnheader-concat gnus-agent-directory "lib/categories")
1134 (prin1 gnus-category-alist (current-buffer))))
1136 (defun gnus-category-edit-predicate (category)
1137 "Edit the predicate for CATEGORY."
1138 (interactive (list (gnus-category-name)))
1139 (let ((info (assq category gnus-category-alist)))
1141 (cadr info) (format "Editing the predicate for category %s" category)
1142 `(lambda (predicate)
1143 (setf (cadr (assq ',category gnus-category-alist)) predicate)
1144 (gnus-category-write)
1145 (gnus-category-list)))))
1147 (defun gnus-category-edit-score (category)
1148 "Edit the score expression for CATEGORY."
1149 (interactive (list (gnus-category-name)))
1150 (let ((info (assq category gnus-category-alist)))
1153 (format "Editing the score expression for category %s" category)
1155 (setf (caddr (assq ',category gnus-category-alist)) groups)
1156 (gnus-category-write)
1157 (gnus-category-list)))))
1159 (defun gnus-category-edit-groups (category)
1160 "Edit the group list for CATEGORY."
1161 (interactive (list (gnus-category-name)))
1162 (let ((info (assq category gnus-category-alist)))
1164 (cadddr info) (format "Editing the group list for category %s" category)
1166 (setf (cadddr (assq ',category gnus-category-alist)) groups)
1167 (gnus-category-write)
1168 (gnus-category-list)))))
1170 (defun gnus-category-kill (category)
1171 "Kill the current category."
1172 (interactive (list (gnus-category-name)))
1173 (let ((info (assq category gnus-category-alist))
1174 (buffer-read-only nil))
1176 (gnus-category-write)
1177 (setq gnus-category-alist (delq info gnus-category-alist))))
1179 (defun gnus-category-copy (category to)
1180 "Copy the current category."
1181 (interactive (list (gnus-category-name) (intern (read-string "New name: "))))
1182 (let ((info (assq category gnus-category-alist)))
1183 (push (list to (gnus-copy-sequence (cadr info))
1184 (gnus-copy-sequence (caddr info)) nil)
1185 gnus-category-alist)
1186 (gnus-category-write)
1187 (gnus-category-list)))
1189 (defun gnus-category-add (category)
1190 "Create a new category."
1191 (interactive "SCategory name: ")
1192 (when (assq category gnus-category-alist)
1193 (error "Category %s already exists" category))
1194 (push (list category 'true nil nil)
1195 gnus-category-alist)
1196 (gnus-category-write)
1197 (gnus-category-list))
1199 (defun gnus-category-list ()
1200 "List all categories."
1202 (gnus-category-prepare))
1204 (defun gnus-category-exit ()
1205 "Return to the group buffer."
1207 (kill-buffer (current-buffer))
1208 (gnus-configure-windows 'group t))
1210 ;; To avoid having 8-bit characters in the source file.
1211 (defvar gnus-category-not (list '! 'not (intern (format "%c" 172))))
1213 (defvar gnus-category-predicate-alist
1214 '((spam . gnus-agent-spam-p)
1215 (short . gnus-agent-short-p)
1216 (long . gnus-agent-long-p)
1217 (low . gnus-agent-low-scored-p)
1218 (high . gnus-agent-high-scored-p)
1219 (true . gnus-agent-true)
1220 (false . gnus-agent-false))
1221 "Mapping from short score predicate symbols to predicate functions.")
1223 (defun gnus-agent-spam-p ()
1224 "Say whether an article is spam or not."
1225 (unless gnus-agent-spam-hashtb
1226 (setq gnus-agent-spam-hashtb (gnus-make-hashtable 1000)))
1227 (if (not (equal (mail-header-references gnus-headers) ""))
1229 (let ((string (gnus-simplify-subject (mail-header-subject gnus-headers))))
1231 (gnus-gethash string gnus-agent-spam-hashtb)
1232 (gnus-sethash string t gnus-agent-spam-hashtb)))))
1234 (defun gnus-agent-short-p ()
1235 "Say whether an article is short or not."
1236 (< (mail-header-lines gnus-headers) gnus-agent-short-article))
1238 (defun gnus-agent-long-p ()
1239 "Say whether an article is long or not."
1240 (> (mail-header-lines gnus-headers) gnus-agent-long-article))
1242 (defun gnus-agent-low-scored-p ()
1243 "Say whether an article has a low score or not."
1244 (< gnus-score gnus-agent-low-score))
1246 (defun gnus-agent-high-scored-p ()
1247 "Say whether an article has a high score or not."
1248 (> gnus-score gnus-agent-high-score))
1250 (defun gnus-category-make-function (cat)
1251 "Make a function from category CAT."
1252 `(lambda () ,(gnus-category-make-function-1 cat)))
1254 (defun gnus-agent-true ()
1258 (defun gnus-agent-false ()
1262 (defun gnus-category-make-function-1 (cat)
1263 "Make a function from category CAT."
1265 ;; Functions are just returned as is.
1267 (gnus-functionp cat))
1268 `(,(or (cdr (assq cat gnus-category-predicate-alist))
1270 ;; More complex category.
1273 ((memq (car cat) '(& and))
1275 ((memq (car cat) '(| or))
1277 ((memq (car cat) gnus-category-not)
1279 ,@(mapcar 'gnus-category-make-function-1 (cdr cat))))
1281 (error "Unknown category type: %s" cat))))
1283 (defun gnus-get-predicate (predicate)
1284 "Return the predicate for CATEGORY."
1285 (or (cdr (assoc predicate gnus-category-predicate-cache))
1286 (cdar (push (cons predicate
1287 (gnus-category-make-function predicate))
1288 gnus-category-predicate-cache))))
1290 (defun gnus-group-category (group)
1291 "Return the category GROUP belongs to."
1292 (unless gnus-category-group-cache
1293 (setq gnus-category-group-cache (gnus-make-hashtable 1000))
1294 (let ((cs gnus-category-alist)
1296 (while (setq cat (pop cs))
1297 (setq groups (cadddr cat))
1299 (gnus-sethash (pop groups) cat gnus-category-group-cache)))))
1300 (or (gnus-gethash group gnus-category-group-cache)
1301 (assq 'default gnus-category-alist)))
1303 (defun gnus-agent-expire ()
1304 "Expire all old articles."
1306 (let ((methods gnus-agent-covered-methods)
1307 (day (- (time-to-days (current-time)) gnus-agent-expire-days))
1308 gnus-command-method sym group articles
1309 history overview file histories elem art nov-file low info
1310 unreads marked article)
1312 (setq overview (gnus-get-buffer-create " *expire overview*"))
1313 (while (setq gnus-command-method (pop methods))
1314 (let ((expiry-hashtb (gnus-make-hashtable 1023)))
1315 (gnus-agent-open-history)
1317 (setq gnus-agent-current-history
1318 (setq history (gnus-agent-history-buffer))))
1319 (goto-char (point-min))
1320 (when (> (buffer-size) 1)
1321 (goto-char (point-min))
1323 (skip-chars-forward "^\t")
1324 (if (> (read (current-buffer)) day)
1325 ;; New article; we don't expire it.
1327 ;; Old article. Schedule it for possible nuking.
1329 (setq sym (let ((obarray expiry-hashtb))
1330 (read (current-buffer))))
1332 (set sym (cons (cons (read (current-buffer)) (point))
1333 (symbol-value sym)))
1334 (set sym (list (cons (read (current-buffer)) (point)))))
1335 (skip-chars-forward " "))
1337 ;; We now have all articles that can possibly be expired.
1340 (setq group (symbol-name sym)
1341 articles (sort (symbol-value sym) 'car-less-than-car)
1342 low (car (gnus-active group))
1343 info (gnus-get-info group)
1344 unreads (ignore-errors (gnus-list-of-unread-articles group))
1345 marked (nconc (gnus-uncompress-range
1346 (cdr (assq 'tick (gnus-info-marks info))))
1347 (gnus-uncompress-range
1349 (gnus-info-marks info)))))
1350 nov-file (gnus-agent-article-name ".overview" group))
1351 (gnus-agent-load-alist group)
1352 (gnus-message 5 "Expiring articles in %s" group)
1353 (set-buffer overview)
1355 (when (file-exists-p nov-file)
1356 (nnheader-insert-file-contents nov-file))
1357 (goto-char (point-min))
1359 (while (setq elem (pop articles))
1360 (setq article (car elem))
1361 (when (or (null low)
1363 gnus-agent-expire-all
1364 (and (not (memq article unreads))
1365 (not (memq article marked))))
1366 ;; Find and nuke the NOV line.
1367 (while (and (not (eobp))
1369 (setq art (read (current-buffer)))))
1372 (gnus-agent-article-name
1373 (number-to-string art) group))
1375 ;; Remove old NOV lines that have no articles.
1376 (gnus-delete-line)))
1381 ;; Nuke the article.
1382 (when (file-exists-p (setq file (gnus-agent-article-name
1383 (number-to-string article)
1386 ;; Schedule the history line for nuking.
1387 (push (cdr elem) histories)))
1388 (gnus-make-directory (file-name-directory nov-file))
1389 (write-region (point-min) (point-max) nov-file nil 'silent)
1390 ;; Delete the unwanted entries in the alist.
1391 (setq gnus-agent-article-alist
1392 (sort gnus-agent-article-alist 'car-less-than-car))
1393 (let* ((alist gnus-agent-article-alist)
1394 (prev (cons nil alist))
1398 (<= (caar alist) article))
1399 (if (or (not (cdar alist))
1401 (gnus-agent-article-name
1406 (push (caar alist) expired)
1407 (setcdr prev (setq alist (cdr alist))))
1409 alist (cdr alist))))
1410 (setq gnus-agent-article-alist (cdr first))
1411 (gnus-agent-save-alist group)
1412 ;; Mark all articles up to the first article
1413 ;; in `gnus-article-alist' as read.
1414 (when (and info (caar gnus-agent-article-alist))
1415 (setcar (nthcdr 2 info)
1418 (cons 1 (- (caar gnus-agent-article-alist) 1)))))
1419 ;; Maybe everything has been expired from `gnus-article-alist'
1420 ;; and so the above marking as read could not be conducted,
1421 ;; or there are expired article within the range of the alist.
1424 (or (not (caar gnus-agent-article-alist))
1426 (caar gnus-agent-article-alist))))
1427 (setcar (nthcdr 2 info)
1430 (nreverse expired))))
1432 (concat "(gnus-group-set-info '"
1433 (gnus-prin1-to-string info)
1436 (set-buffer history)
1437 (setq histories (nreverse (sort histories '<)))
1439 (goto-char (pop histories))
1441 (gnus-agent-save-history)
1442 (gnus-agent-close-history))
1443 (gnus-message 4 "Expiry...done"))))))
1446 (defun gnus-agent-batch ()
1448 (let ((init-file-user "")
1449 (gnus-always-read-dribble-file t))
1451 (gnus-group-send-drafts)
1452 (gnus-agent-fetch-session))
1454 (provide 'gnus-agent)
1456 ;;; gnus-agent.el ends here