1 ;;; gnus-srvr.el --- virtual server support for Gnus
3 ;; Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
4 ;; 2004, 2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
6 ;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
9 ;; This file is part of GNU Emacs.
11 ;; GNU Emacs is free software: you can redistribute it and/or modify
12 ;; it under the terms of the GNU General Public License as published by
13 ;; the Free Software Foundation, either version 3 of the License, or
14 ;; (at your option) any later version.
16 ;; GNU Emacs is distributed in the hope that it will be useful,
17 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
18 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 ;; GNU General Public License for more details.
21 ;; You should have received a copy of the GNU General Public License
22 ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
28 (eval-when-compile (require 'cl))
37 (defcustom gnus-server-mode-hook nil
38 "Hook run in `gnus-server-mode' buffers."
42 (defcustom gnus-server-exit-hook nil
43 "Hook run when exiting the server buffer."
47 (defcustom gnus-server-line-format " {%(%h:%w%)} %s%a\n"
48 "Format of server lines.
49 It works along the same lines as a normal formatting string,
50 with some simple extensions.
52 The following specs are understood:
60 General format specifiers can also be used.
61 See Info node `(gnus)Formatting Variables'."
62 :link '(custom-manual "(gnus)Formatting Variables")
63 :group 'gnus-server-visual
66 (defcustom gnus-server-mode-line-format "Gnus: %%b"
67 "The format specification for the server mode line."
68 :group 'gnus-server-visual
71 (defcustom gnus-server-browse-in-group-buffer nil
72 "Whether server browsing should take place in the group buffer.
73 If nil, a faster, but more primitive, buffer is used instead."
75 :group 'gnus-server-visual
78 ;;; Internal variables.
80 (defvar gnus-inserted-opened-servers nil)
82 (defvar gnus-server-line-format-alist
83 `((?h gnus-tmp-how ?s)
85 (?w gnus-tmp-where ?s)
86 (?s gnus-tmp-status ?s)
87 (?a gnus-tmp-agent ?s)))
89 (defvar gnus-server-mode-line-format-alist
90 `((?S gnus-tmp-news-server ?s)
91 (?M gnus-tmp-news-method ?s)
92 (?u gnus-tmp-user-defined ?s)))
94 (defvar gnus-server-line-format-spec nil)
95 (defvar gnus-server-mode-line-format-spec nil)
96 (defvar gnus-server-killed-servers nil)
98 (defvar gnus-server-mode-map)
100 (defvar gnus-server-menu-hook nil
101 "*Hook run after the creation of the server mode menu.")
103 (defun gnus-server-make-menu-bar ()
104 (gnus-turn-off-edit-menu 'server)
105 (unless (boundp 'gnus-server-server-menu)
107 gnus-server-server-menu gnus-server-mode-map ""
109 ["Add..." gnus-server-add-server t]
110 ["Browse" gnus-server-read-server t]
111 ["Scan" gnus-server-scan-server t]
112 ["List" gnus-server-list-servers t]
113 ["Kill" gnus-server-kill-server t]
114 ["Yank" gnus-server-yank-server t]
115 ["Copy" gnus-server-copy-server t]
116 ["Edit" gnus-server-edit-server t]
117 ["Regenerate" gnus-server-regenerate-server t]
118 ["Compact" gnus-server-compact-server t]
119 ["Exit" gnus-server-exit t]))
122 gnus-server-connections-menu gnus-server-mode-map ""
124 ["Open" gnus-server-open-server t]
125 ["Close" gnus-server-close-server t]
126 ["Offline" gnus-server-offline-server t]
127 ["Deny" gnus-server-deny-server t]
129 ["Open All" gnus-server-open-all-servers t]
130 ["Close All" gnus-server-close-all-servers t]
131 ["Reset All" gnus-server-remove-denials t]))
133 (gnus-run-hooks 'gnus-server-menu-hook)))
135 (defvar gnus-server-mode-map nil)
136 (put 'gnus-server-mode 'mode-class 'special)
138 (unless gnus-server-mode-map
139 (setq gnus-server-mode-map (make-sparse-keymap))
140 (suppress-keymap gnus-server-mode-map)
142 (gnus-define-keys gnus-server-mode-map
143 " " gnus-server-read-server-in-server-buffer
144 "\r" gnus-server-read-server
145 gnus-mouse-2 gnus-server-pick-server
147 "l" gnus-server-list-servers
148 "k" gnus-server-kill-server
149 "y" gnus-server-yank-server
150 "c" gnus-server-copy-server
151 "a" gnus-server-add-server
152 "e" gnus-server-edit-server
153 "s" gnus-server-scan-server
155 "O" gnus-server-open-server
156 "\M-o" gnus-server-open-all-servers
157 "C" gnus-server-close-server
158 "\M-c" gnus-server-close-all-servers
159 "D" gnus-server-deny-server
160 "L" gnus-server-offline-server
161 "R" gnus-server-remove-denials
166 "g" gnus-server-regenerate-server
168 "z" gnus-server-compact-server
170 "\C-c\C-i" gnus-info-find-node
171 "\C-c\C-b" gnus-bug))
173 (defface gnus-server-agent
174 '((((class color) (background light)) (:foreground "PaleTurquoise" :bold t))
175 (((class color) (background dark)) (:foreground "PaleTurquoise" :bold t))
177 "Face used for displaying AGENTIZED servers"
178 :group 'gnus-server-visual)
179 ;; backward-compatibility alias
180 (put 'gnus-server-agent-face 'face-alias 'gnus-server-agent)
181 (put 'gnus-server-agent-face 'obsolete-face "22.1")
183 (defface gnus-server-opened
184 '((((class color) (background light)) (:foreground "Green3" :bold t))
185 (((class color) (background dark)) (:foreground "Green1" :bold t))
187 "Face used for displaying OPENED servers"
188 :group 'gnus-server-visual)
189 ;; backward-compatibility alias
190 (put 'gnus-server-opened-face 'face-alias 'gnus-server-opened)
191 (put 'gnus-server-opened-face 'obsolete-face "22.1")
193 (defface gnus-server-closed
194 '((((class color) (background light)) (:foreground "Steel Blue" :italic t))
195 (((class color) (background dark))
196 (:foreground "LightBlue" :italic t))
198 "Face used for displaying CLOSED servers"
199 :group 'gnus-server-visual)
200 ;; backward-compatibility alias
201 (put 'gnus-server-closed-face 'face-alias 'gnus-server-closed)
202 (put 'gnus-server-closed-face 'obsolete-face "22.1")
204 (defface gnus-server-denied
205 '((((class color) (background light)) (:foreground "Red" :bold t))
206 (((class color) (background dark)) (:foreground "Pink" :bold t))
207 (t (:inverse-video t :bold t)))
208 "Face used for displaying DENIED servers"
209 :group 'gnus-server-visual)
210 ;; backward-compatibility alias
211 (put 'gnus-server-denied-face 'face-alias 'gnus-server-denied)
212 (put 'gnus-server-denied-face 'obsolete-face "22.1")
214 (defface gnus-server-offline
215 '((((class color) (background light)) (:foreground "Orange" :bold t))
216 (((class color) (background dark)) (:foreground "Yellow" :bold t))
217 (t (:inverse-video t :bold t)))
218 "Face used for displaying OFFLINE servers"
219 :group 'gnus-server-visual)
220 ;; backward-compatibility alias
221 (put 'gnus-server-offline-face 'face-alias 'gnus-server-offline)
222 (put 'gnus-server-offline-face 'obsolete-face "22.1")
224 (defvar gnus-server-font-lock-keywords
225 '(("(\\(agent\\))" 1 'gnus-server-agent)
226 ("(\\(opened\\))" 1 'gnus-server-opened)
227 ("(\\(closed\\))" 1 'gnus-server-closed)
228 ("(\\(offline\\))" 1 'gnus-server-offline)
229 ("(\\(denied\\))" 1 'gnus-server-denied)))
231 (defun gnus-server-mode ()
232 "Major mode for listing and editing servers.
234 All normal editing commands are switched off.
235 \\<gnus-server-mode-map>
236 For more in-depth information on this mode, read the manual
237 \(`\\[gnus-info-find-node]').
239 The following commands are available:
241 \\{gnus-server-mode-map}"
243 (when (gnus-visual-p 'server-menu 'menu)
244 (gnus-server-make-menu-bar))
245 (kill-all-local-variables)
246 (gnus-simplify-mode-line)
247 (setq major-mode 'gnus-server-mode)
248 (setq mode-name "Server")
249 (gnus-set-default-directory)
250 (setq mode-line-process nil)
251 (use-local-map gnus-server-mode-map)
252 (buffer-disable-undo)
253 (setq truncate-lines t)
254 (setq buffer-read-only t)
255 (if (featurep 'xemacs)
256 (put 'gnus-server-mode 'font-lock-defaults '(gnus-server-font-lock-keywords t))
257 (set (make-local-variable 'font-lock-defaults)
258 '(gnus-server-font-lock-keywords t)))
259 (gnus-run-mode-hooks 'gnus-server-mode-hook))
261 (defun gnus-server-insert-server-line (gnus-tmp-name method)
262 (let* ((gnus-tmp-how (car method))
263 (gnus-tmp-where (nth 1 method))
264 (elem (assoc method gnus-opened-servers))
267 ((eq (nth 1 elem) 'denied) "(denied)")
268 ((eq (nth 1 elem) 'offline) "(offline)")
271 (if (or (gnus-server-opened method)
272 (eq (nth 1 elem) 'ok))
275 ((error) "(error)")))))
276 (gnus-tmp-agent (if (and gnus-agent
277 (gnus-agent-method-p method))
281 (gnus-add-text-properties
285 (eval gnus-server-line-format-spec))
286 (list 'gnus-server (intern gnus-tmp-name)
287 'gnus-named-server (intern (gnus-method-to-server method t))))))
289 (defun gnus-enter-server-buffer ()
290 "Set up the server buffer."
291 (gnus-server-setup-buffer)
292 (gnus-configure-windows 'server)
293 ;; Usually `gnus-configure-windows' will finish with the
294 ;; `gnus-server-buffer' selected as the current buffer, but not always (I
295 ;; bumped into it when starting from a dedicated *Group* frame, and
296 ;; gnus-configure-windows opened *Server* into its own dedicated frame).
297 (with-current-buffer (get-buffer gnus-server-buffer)
298 (gnus-server-prepare)))
300 (defun gnus-server-setup-buffer ()
301 "Initialize the server buffer."
302 (unless (get-buffer gnus-server-buffer)
303 (with-current-buffer (gnus-get-buffer-create gnus-server-buffer)
306 (gnus-carpal-setup-buffer 'server)))))
308 (defun gnus-server-prepare ()
309 (gnus-set-format 'server-mode)
310 (gnus-set-format 'server t)
311 (let ((alist gnus-server-alist)
312 (buffer-read-only nil)
315 (setq gnus-inserted-opened-servers nil)
316 ;; First we do the real list of servers.
318 (unless (member (cdar alist) done)
319 (push (cdar alist) done)
320 (setq server (pop alist))
321 (when (and server (car server) (cdr server))
322 (gnus-server-insert-server-line (car server) (cdr server))))
323 (when (member (cdar alist) done)
325 ;; Then we insert the list of servers that have been opened in
327 (dolist (open gnus-opened-servers)
328 (when (and (not (member (car open) done))
329 ;; Just ignore ephemeral servers.
330 (not (member (car open) gnus-ephemeral-servers)))
331 (push (car open) done)
332 (gnus-server-insert-server-line
333 (setq op-ser (format "%s:%s" (caar open) (nth 1 (car open))))
335 (push (list op-ser (car open)) gnus-inserted-opened-servers))))
336 (goto-char (point-min))
337 (gnus-server-position-point))
339 (defun gnus-server-server-name ()
340 (let ((server (get-text-property (point-at-bol) 'gnus-server)))
341 (and server (symbol-name server))))
343 (defun gnus-server-named-server ()
344 "Return a server name that matches one of the names returned by
345 `gnus-method-to-server'."
346 (let ((server (get-text-property (point-at-bol) 'gnus-named-server)))
347 (and server (symbol-name server))))
349 (defalias 'gnus-server-position-point 'gnus-goto-colon)
351 (defconst gnus-server-edit-buffer "*Gnus edit server*")
353 (defun gnus-server-update-server (server)
354 (with-current-buffer gnus-server-buffer
355 (let* ((buffer-read-only nil)
356 (entry (assoc server gnus-server-alist))
357 (oentry (assoc (gnus-server-to-method server)
358 gnus-opened-servers)))
361 (concat "(gnus-server-set-info \"" server "\" '"
362 (gnus-prin1-to-string (cdr entry)) ")\n")))
363 (when (or entry oentry)
364 ;; Buffer may be narrowed.
367 (when (gnus-server-goto-server server)
370 (gnus-server-insert-server-line (car entry) (cdr entry))
371 (gnus-server-insert-server-line
372 (format "%s:%s" (caar oentry) (nth 1 (car oentry)))
374 (gnus-server-position-point))))))
376 (defun gnus-server-set-info (server info)
377 ;; Enter a select method into the virtual server alist.
378 (when (and server info)
380 (concat "(gnus-server-set-info \"" server "\" '"
381 (gnus-prin1-to-string info) ")"))
382 (let* ((server (nth 1 info))
383 (entry (assoc server gnus-server-alist))
384 (cached (assoc server gnus-server-method-cache)))
386 (setq gnus-server-method-cache
387 (delq cached gnus-server-method-cache)))
390 ;; Remove the server from `gnus-opened-servers' since
391 ;; it has never been opened with the new `info' yet.
392 (gnus-opened-servers-remove (cdr entry))
393 ;; Don't make a new Lisp object.
394 (setcar (cdr entry) (car info))
395 (setcdr (cdr entry) (cdr info)))
396 (setq gnus-server-alist
397 (nconc gnus-server-alist (list (cons server info))))))))
399 ;;; Interactive server functions.
401 (defun gnus-server-kill-server (server)
402 "Kill the server on the current line."
403 (interactive (list (gnus-server-server-name)))
404 (unless (gnus-server-goto-server server)
405 (if server (error "No such server: %s" server)
406 (error "No server on the current line")))
407 (unless (assoc server gnus-server-alist)
408 (error "Read-only server %s" server))
410 (let ((buffer-read-only nil))
412 (push (assoc server gnus-server-alist) gnus-server-killed-servers)
413 (setq gnus-server-alist (delq (car gnus-server-killed-servers)
415 (let ((groups (gnus-groups-from-server server)))
418 (format "Kill all %s groups from this server? "
420 (dolist (group groups)
421 (setq gnus-newsrc-alist
422 (delq (assoc group gnus-newsrc-alist)
424 (when gnus-group-change-level-function
425 (funcall gnus-group-change-level-function
426 group gnus-level-killed 3)))))
427 (gnus-server-position-point))
429 (defun gnus-server-yank-server ()
430 "Yank the previously killed server."
432 (unless gnus-server-killed-servers
433 (error "No killed servers to be yanked"))
434 (let ((alist gnus-server-alist)
435 (server (gnus-server-server-name))
436 (killed (car gnus-server-killed-servers)))
438 (setq gnus-server-alist (nconc gnus-server-alist (list killed)))
439 (if (string= server (caar gnus-server-alist))
440 (push killed gnus-server-alist)
441 (while (and (cdr alist)
442 (not (string= server (caadr alist))))
443 (setq alist (cdr alist)))
445 (setcdr alist (cons killed (cdr alist)))
446 (setq gnus-server-alist (list killed)))))
447 (gnus-server-update-server (car killed))
448 (setq gnus-server-killed-servers (cdr gnus-server-killed-servers))
449 (gnus-server-position-point)))
451 (defun gnus-server-exit ()
452 "Return to the group buffer."
454 (gnus-run-hooks 'gnus-server-exit-hook)
455 (gnus-kill-buffer (current-buffer))
456 (gnus-configure-windows 'group t))
458 (defun gnus-server-list-servers ()
459 "List all available servers."
461 (let ((cur (gnus-server-server-name)))
462 (gnus-server-prepare)
463 (if cur (gnus-server-goto-server cur)
464 (goto-char (point-max))
466 (gnus-server-position-point)))
468 (defun gnus-server-set-status (method status)
469 "Make METHOD have STATUS."
470 (let ((entry (assoc method gnus-opened-servers)))
472 (setcar (cdr entry) status)
473 (push (list method status) gnus-opened-servers))))
475 (defun gnus-opened-servers-remove (method)
476 "Remove METHOD from the list of opened servers."
477 (setq gnus-opened-servers (delq (assoc method gnus-opened-servers)
478 gnus-opened-servers)))
480 (defun gnus-server-open-server (server)
481 "Force an open of SERVER."
482 (interactive (list (gnus-server-server-name)))
483 (let ((method (gnus-server-to-method server)))
485 (error "No such server: %s" server))
486 (gnus-server-set-status method 'ok)
488 (or (gnus-open-server method)
489 (progn (message "Couldn't open %s" server) nil))
490 (gnus-server-update-server server)
491 (gnus-server-position-point))))
493 (defun gnus-server-open-all-servers ()
496 (dolist (server gnus-inserted-opened-servers)
497 (gnus-server-open-server (car server))))
499 (defun gnus-server-close-server (server)
501 (interactive (list (gnus-server-server-name)))
502 (let ((method (gnus-server-to-method server)))
504 (error "No such server: %s" server))
505 (gnus-server-set-status method 'closed)
507 (gnus-close-server method)
508 (gnus-server-update-server server)
509 (gnus-server-position-point))))
511 (defun gnus-server-offline-server (server)
512 "Set SERVER to offline."
513 (interactive (list (gnus-server-server-name)))
514 (let ((method (gnus-server-to-method server)))
516 (error "No such server: %s" server))
518 (gnus-close-server method)
519 (gnus-server-set-status method 'offline)
520 (gnus-server-update-server server)
521 (gnus-server-position-point))))
523 (defun gnus-server-close-all-servers ()
526 (dolist (server gnus-inserted-opened-servers)
527 (gnus-server-close-server (car server)))
528 (dolist (server gnus-server-alist)
529 (gnus-server-close-server (car server))))
531 (defun gnus-server-deny-server (server)
532 "Make sure SERVER will never be attempted opened."
533 (interactive (list (gnus-server-server-name)))
534 (let ((method (gnus-server-to-method server)))
536 (error "No such server: %s" server))
537 (gnus-server-set-status method 'denied))
538 (gnus-server-update-server server)
539 (gnus-server-position-point)
542 (defun gnus-server-remove-denials ()
543 "Make all denied servers into closed servers."
545 (dolist (server gnus-opened-servers)
546 (when (eq (nth 1 server) 'denied)
547 (setcar (nthcdr 1 server) 'closed)))
548 (gnus-server-list-servers))
550 (defun gnus-server-copy-server (from to)
551 "Copy a server definiton to a new name."
554 (or (gnus-server-server-name)
555 (error "No server on the current line"))
556 (read-string "Copy to: ")))
558 (error "No server on current line"))
559 (unless (and to (not (string= to "")))
560 (error "No name to copy to"))
561 (when (assoc to gnus-server-alist)
562 (error "%s already exists" to))
563 (unless (gnus-server-to-method from)
564 (error "%s: no such server" from))
565 (let ((to-entry (cons from (gnus-copy-sequence
566 (gnus-server-to-method from)))))
568 (setcar (nthcdr 2 to-entry) to)
569 (push to-entry gnus-server-killed-servers)
570 (gnus-server-yank-server)))
572 (defun gnus-server-add-server (how where)
574 (list (intern (gnus-completing-read "Server method"
575 (mapcar 'car gnus-valid-select-methods)
577 (read-string "Server name: ")))
578 (when (assq where gnus-server-alist)
579 (error "Server with that name already defined"))
580 (push (list where how where) gnus-server-killed-servers)
581 (gnus-server-yank-server))
583 (defun gnus-server-goto-server (server)
584 "Jump to a server line."
586 (list (gnus-completing-read "Goto server" (mapcar 'car gnus-server-alist) t)))
587 (let ((to (text-property-any (point-min) (point-max)
588 'gnus-server (intern server))))
591 (gnus-server-position-point))))
593 (defun gnus-server-edit-server (server)
594 "Edit the server on the current line."
595 (interactive (list (gnus-server-server-name)))
597 (error "No server on current line"))
598 (unless (assoc server gnus-server-alist)
599 (error "This server can't be edited"))
600 (let ((info (cdr (assoc server gnus-server-alist))))
601 (gnus-close-server info)
603 info "Editing the server."
605 (gnus-server-set-info ,server form)
606 (gnus-server-list-servers)
607 (gnus-server-position-point))
610 (defun gnus-server-scan-server (server)
611 "Request a scan from the current server."
612 (interactive (list (gnus-server-server-name)))
613 (let ((method (gnus-server-to-method server)))
614 (if (not (gnus-get-function method 'request-scan))
615 (error "Server %s can't scan" (car method))
616 (gnus-message 3 "Scanning %s..." server)
617 (gnus-request-scan nil method)
618 (gnus-message 3 "Scanning %s...done" server))))
620 (defun gnus-server-read-server-in-server-buffer (server)
621 "Browse a server in server buffer."
622 (interactive (list (gnus-server-server-name)))
623 (let (gnus-server-browse-in-group-buffer)
624 (gnus-server-read-server server)))
626 (defun gnus-server-read-server (server)
628 (interactive (list (gnus-server-server-name)))
629 (let ((buf (current-buffer)))
631 (gnus-browse-foreign-server server buf)
632 (with-current-buffer buf
633 (gnus-server-update-server (gnus-server-server-name))
634 (gnus-server-position-point)))))
636 (defun gnus-server-pick-server (e)
639 (gnus-server-read-server (gnus-server-server-name)))
643 ;;; Browse Server Mode
646 (defvar gnus-browse-menu-hook nil
647 "*Hook run after the creation of the browse mode menu.")
649 (defcustom gnus-browse-subscribe-newsgroup-method
650 'gnus-subscribe-alphabetically
651 "Function(s) called when subscribing groups in the Browse Server Buffer
652 A few pre-made functions are supplied: `gnus-subscribe-randomly'
653 inserts new groups at the beginning of the list of groups;
654 `gnus-subscribe-alphabetically' inserts new groups in strict
655 alphabetic order; `gnus-subscribe-hierarchically' inserts new groups
656 in hierarchical newsgroup order; `gnus-subscribe-interactively' asks
657 for your decision; `gnus-subscribe-killed' kills all new groups;
658 `gnus-subscribe-zombies' will make all new groups into zombies;
659 `gnus-subscribe-topics' will enter groups into the topics that
663 :type '(radio (function-item gnus-subscribe-randomly)
664 (function-item gnus-subscribe-alphabetically)
665 (function-item gnus-subscribe-hierarchically)
666 (function-item gnus-subscribe-interactively)
667 (function-item gnus-subscribe-killed)
668 (function-item gnus-subscribe-zombies)
669 (function-item gnus-subscribe-topics)
673 (defvar gnus-browse-mode-hook nil)
674 (defvar gnus-browse-mode-map nil)
675 (put 'gnus-browse-mode 'mode-class 'special)
677 (unless gnus-browse-mode-map
678 (setq gnus-browse-mode-map (make-keymap))
679 (suppress-keymap gnus-browse-mode-map)
683 " " gnus-browse-read-group
684 "=" gnus-browse-select-group
685 "n" gnus-browse-next-group
686 "p" gnus-browse-prev-group
687 "\177" gnus-browse-prev-group
688 [delete] gnus-browse-prev-group
689 "N" gnus-browse-next-group
690 "P" gnus-browse-prev-group
691 "\M-n" gnus-browse-next-group
692 "\M-p" gnus-browse-prev-group
693 "\r" gnus-browse-select-group
694 "u" gnus-browse-unsubscribe-current-group
699 "d" gnus-browse-describe-group
700 "\C-c\C-c" gnus-browse-exit
701 "?" gnus-browse-describe-briefly
703 "\C-c\C-i" gnus-info-find-node
704 "\C-c\C-b" gnus-bug))
706 (defun gnus-browse-make-menu-bar ()
707 (gnus-turn-off-edit-menu 'browse)
708 (unless (boundp 'gnus-browse-menu)
710 gnus-browse-menu gnus-browse-mode-map ""
712 ["Subscribe" gnus-browse-unsubscribe-current-group t]
713 ["Read" gnus-browse-read-group t]
714 ["Select" gnus-browse-select-group t]
715 ["Describe" gnus-browse-describe-group t]
716 ["Next" gnus-browse-next-group t]
717 ["Prev" gnus-browse-prev-group t]
718 ["Exit" gnus-browse-exit t]))
719 (gnus-run-hooks 'gnus-browse-menu-hook)))
721 (defvar gnus-browse-current-method nil)
722 (defvar gnus-browse-return-buffer nil)
724 (defvar gnus-browse-buffer "*Gnus Browse Server*")
726 (defun gnus-browse-foreign-server (server &optional return-buffer)
727 "Browse the server SERVER."
728 (setq gnus-browse-current-method (gnus-server-to-method server))
729 (setq gnus-browse-return-buffer return-buffer)
730 (let* ((method gnus-browse-current-method)
731 (orig-select-method gnus-select-method)
732 (gnus-select-method method)
734 (gnus-message 5 "Connecting to %s..." (nth 1 method))
736 ((not (gnus-check-server method))
738 1 "Unable to contact server %s: %s" (nth 1 method)
739 (gnus-status-message method))
743 (gnus-message 6 "Reading active file...")
744 (gnus-request-list method)
745 (gnus-message 6 "Reading active file...done")))
747 1 "Couldn't request list: %s" (gnus-status-message method))
750 (with-current-buffer nntp-server-buffer
751 (let ((cur (current-buffer)))
752 (goto-char (point-min))
753 (unless (string= gnus-ignored-newsgroups "")
754 (delete-matching-lines gnus-ignored-newsgroups))
755 ;; We treat NNTP as a special case to avoid problems with
756 ;; garbage group names like `"foo' that appear in some badly
757 ;; managed active files. -jh.
758 (if (eq (car method) 'nntp)
762 (mm-string-as-unibyte
766 (skip-chars-forward "^ \t")
768 (let ((last (read cur)))
769 (cons (read cur) last)))
775 (mm-string-as-unibyte
776 (if (eq (char-after) ?\")
778 (let ((p (point)) (name ""))
779 (skip-chars-forward "^ \t\\\\")
780 (setq name (buffer-substring p (point)))
781 (while (eq (char-after) ?\\)
782 (setq p (1+ (point)))
784 (skip-chars-forward "^ \t\\\\")
785 (setq name (concat name (buffer-substring
788 (let ((last (read cur)))
789 (cons (read cur) last)))
792 (setq groups (sort groups
794 (string< (car l1) (car l2)))))
795 (if gnus-server-browse-in-group-buffer
796 (let* ((gnus-select-method orig-select-method)
797 (gnus-group-listed-groups
798 (mapcar (lambda (group)
800 (gnus-group-prefixed-name
801 (car group) method)))
802 (gnus-set-active name (cdr group))
805 (gnus-configure-windows 'group)
806 (funcall gnus-group-prepare-function
807 gnus-level-killed 'ignore 1 'ignore))
808 (gnus-get-buffer-create gnus-browse-buffer)
810 (gnus-carpal-setup-buffer 'browse))
811 (gnus-configure-windows 'browse)
812 (buffer-disable-undo)
813 (let ((buffer-read-only nil))
816 (setq mode-line-buffer-identification
819 "Gnus: %%b {%s:%s}" (car method) (cadr method))))
820 (let ((buffer-read-only nil)
822 (prefix (let ((gnus-select-method orig-select-method))
823 (gnus-group-prefixed-name "" method))))
824 (while (setq group (pop groups))
825 (gnus-add-text-properties
829 (format "%c%7d: %s\n"
831 (if (string= prefix "")
832 (gnus-group-level (setq name (car group)))
834 (concat prefix (setq name (car group)))))))
836 ((<= level gnus-level-subscribed) ? )
837 ((<= level gnus-level-unsubscribed) ?U)
838 ((= level gnus-level-zombie) ?Z)
840 (max 0 (- (1+ (cddr group)) (cadr group)))
841 ;; Don't decode if name is ASCII
842 (if (and (fboundp 'detect-coding-string)
843 (eq (detect-coding-string name t) 'undecided))
845 (mm-decode-coding-string
847 (inline (gnus-group-name-charset method name)))))))
848 (list 'gnus-group name)
850 (switch-to-buffer (current-buffer)))
851 (goto-char (point-min))
852 (gnus-group-position-point)
853 (gnus-message 5 "Connecting to %s...done" (nth 1 method))
856 (defun gnus-browse-mode ()
857 "Major mode for browsing a foreign server.
859 All normal editing commands are switched off.
861 \\<gnus-browse-mode-map>
862 The only things you can do in this buffer is
864 1) `\\[gnus-browse-unsubscribe-current-group]' to subscribe to a group.
865 The group will be inserted into the group buffer upon exit from this
868 2) `\\[gnus-browse-read-group]' to read a group ephemerally.
870 3) `\\[gnus-browse-exit]' to return to the group buffer."
872 (kill-all-local-variables)
873 (when (gnus-visual-p 'browse-menu 'menu)
874 (gnus-browse-make-menu-bar))
875 (gnus-simplify-mode-line)
876 (setq major-mode 'gnus-browse-mode)
877 (setq mode-name "Browse Server")
878 (setq mode-line-process nil)
879 (use-local-map gnus-browse-mode-map)
880 (buffer-disable-undo)
881 (setq truncate-lines t)
882 (gnus-set-default-directory)
883 (setq buffer-read-only t)
884 (gnus-run-mode-hooks 'gnus-browse-mode-hook))
886 (defun gnus-browse-read-group (&optional no-article number)
887 "Enter the group at the current line.
888 If NUMBER, fetch this number of articles."
890 (let ((group (gnus-browse-group-name)))
891 (if (or (not (gnus-get-info group))
892 (gnus-ephemeral-group-p group))
893 (unless (gnus-group-read-ephemeral-group
894 group gnus-browse-current-method nil
895 (cons (current-buffer) 'browse)
897 (error "Couldn't enter %s" group))
898 (unless (gnus-group-read-group nil no-article group)
899 (error "Couldn't enter %s" group)))))
901 (defun gnus-browse-select-group (&optional number)
902 "Select the current group.
903 If NUMBER, fetch this number of articles."
905 (gnus-browse-read-group 'no number))
907 (defun gnus-browse-next-group (n)
908 "Go to the next group."
912 (gnus-group-position-point)))
914 (defun gnus-browse-prev-group (n)
915 "Go to the next group."
917 (gnus-browse-next-group (- n)))
919 (defun gnus-browse-unsubscribe-current-group (arg)
920 "(Un)subscribe to the next ARG groups.
921 The variable `gnus-browse-subscribe-newsgroup-method' determines
922 how new groups will be entered into the group buffer."
925 (error "No group at current line"))
926 (let ((ward (if (< arg 0) -1 1))
928 (while (and (> arg 0)
930 (gnus-browse-unsubscribe-group)
931 (zerop (gnus-browse-next-group ward)))
933 (gnus-group-position-point)
935 (gnus-message 7 "No more newsgroups"))
938 (defun gnus-browse-group-name ()
941 (let ((name (get-text-property (point) 'gnus-group)))
942 (when (re-search-forward ": \\(.*\\)$" (point-at-eol) t)
943 (concat (gnus-method-to-server-name gnus-browse-current-method) ":"
945 (match-string-no-properties 1)))))))
947 (defun gnus-browse-describe-group (group)
948 "Describe the current group."
949 (interactive (list (gnus-browse-group-name)))
950 (gnus-group-describe-group nil group))
952 (defun gnus-browse-unsubscribe-group ()
953 "Toggle subscription of the current group in the browse buffer."
955 (buffer-read-only nil)
959 ;; If this group it killed, then we want to subscribe it.
960 (unless (eq (char-after) ? )
962 (setq group (gnus-browse-group-name))
963 (when (gnus-server-equal gnus-browse-current-method "native")
964 (setq group (gnus-group-real-name group)))
967 ;; Make sure the group has been properly removed before we
969 (if (gnus-ephemeral-group-p group)
970 (gnus-kill-ephemeral-group group))
971 (let ((entry (gnus-group-entry group)))
973 ;; Just change the subscription level if it is an
974 ;; unsubscribed group.
975 (gnus-group-change-level entry
976 gnus-level-default-subscribed)
977 ;; If it is a killed group or a zombie, feed it to the
978 ;; mechanism for new group subscription.
979 (gnus-call-subscribe-functions
980 gnus-browse-subscribe-newsgroup-method
983 (insert (let ((lvl (gnus-group-level group)))
985 ((< lvl gnus-level-unsubscribed) ? )
986 ((< lvl gnus-level-zombie) ?U)
987 ((< lvl gnus-level-killed) ?Z)
989 (gnus-group-change-level
990 group gnus-level-unsubscribed gnus-level-default-subscribed)
995 (defun gnus-browse-exit ()
996 "Quit browsing and return to the group buffer."
998 (when (eq major-mode 'gnus-browse-mode)
999 (gnus-kill-buffer (current-buffer)))
1000 ;; Insert the newly subscribed groups in the group buffer.
1001 (with-current-buffer gnus-group-buffer
1002 (gnus-group-list-groups nil))
1003 (if gnus-browse-return-buffer
1004 (gnus-configure-windows 'server 'force)
1005 (gnus-configure-windows 'group 'force)))
1007 (defun gnus-browse-describe-briefly ()
1008 "Give a one line description of the group mode commands."
1010 (gnus-message 6 "%s"
1011 (substitute-command-keys "\\<gnus-browse-mode-map>\\[gnus-group-next-group]:Forward \\[gnus-group-prev-group]:Backward \\[gnus-browse-exit]:Exit \\[gnus-info-find-node]:Run Info \\[gnus-browse-describe-briefly]:This help")))
1013 (defun gnus-server-regenerate-server ()
1014 "Issue a command to the server to regenerate all its data structures."
1016 (let ((server (gnus-server-server-name)))
1018 (error "No server on the current line"))
1020 (gnus-get-function (gnus-server-to-method server)
1021 'request-regenerate)
1023 (error "This back end doesn't support regeneration")))
1024 (gnus-message 5 "Requesting regeneration of %s..." server)
1025 (unless (gnus-open-server server)
1026 (error "Couldn't open server"))
1027 (if (gnus-request-regenerate server)
1028 (gnus-message 5 "Requesting regeneration of %s...done" server)
1029 (gnus-message 5 "Couldn't regenerate %s" server))))
1033 ;;; Server compaction. -- dvl
1036 ;; #### FIXME: this function currently fails to update the Group buffer's
1038 (defun gnus-server-compact-server ()
1039 "Issue a command to the server to compact all its groups.
1041 Note: currently only implemented in nnml."
1043 (let ((server (gnus-server-server-name)))
1045 (error "No server on the current line"))
1047 (gnus-get-function (gnus-server-to-method server)
1050 (error "This back end doesn't support compaction")))
1052 Requesting compaction of %s... (this may take a long time)"
1054 (unless (gnus-open-server server)
1055 (error "Couldn't open server"))
1056 (if (not (gnus-request-compact server))
1057 (gnus-message 5 "Couldn't compact %s" server)
1058 (gnus-message 5 "Requesting compaction of %s...done" server)
1059 ;; Invalidate the original article buffer which might be out of date.
1060 ;; #### NOTE: Yes, this might be a bit rude, but since compaction
1061 ;; #### will not happen very often, I think this is acceptable.
1062 (let ((original (get-buffer gnus-original-article-buffer)))
1063 (and original (gnus-kill-buffer original))))))
1065 (provide 'gnus-srvr)
1067 ;;; gnus-srvr.el ends here