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1 ;;; gnus-srvr.el --- virtual server support for Gnus
2 ;; Copyright (C) 1995,96 Free Software Foundation, Inc.
3
4 ;; Author: Lars Magne Ingebrigtsen <larsi@ifi.uio.no>
5 ;; Keywords: news
6
7 ;; This file is part of GNU Emacs.
8
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 2, or (at your option)
12 ;; any later version.
13
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.
18
19 ;; You should have received a copy of the GNU General Public License
20 ;; along with GNU Emacs; see the file COPYING. If not, write to the
21 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
22 ;; Boston, MA 02111-1307, USA.
23
24 ;;; Commentary:
25
26 ;;; Code:
27
28 (require 'gnus)
29 (eval-when-compile (require 'cl))
30
31 (defvar gnus-server-mode-hook nil
32 "Hook run in `gnus-server-mode' buffers.")
33
34 (defconst gnus-server-line-format " {%(%h:%w%)} %s\n"
35 "Format of server lines.
36 It works along the same lines as a normal formatting string,
37 with some simple extensions.")
38
39 (defvar gnus-server-mode-line-format "Gnus List of servers"
40 "The format specification for the server mode line.")
41
42 (defvar gnus-server-exit-hook nil
43 "*Hook run when exiting the server buffer.")
44
45 ;;; Internal variables.
46
47 (defvar gnus-inserted-opened-servers nil)
48
49 (defvar gnus-server-line-format-alist
50 `((?h how ?s)
51 (?n name ?s)
52 (?w where ?s)
53 (?s status ?s)))
54
55 (defvar gnus-server-mode-line-format-alist
56 `((?S news-server ?s)
57 (?M news-method ?s)
58 (?u user-defined ?s)))
59
60 (defvar gnus-server-line-format-spec nil)
61 (defvar gnus-server-mode-line-format-spec nil)
62 (defvar gnus-server-killed-servers nil)
63
64 (defvar gnus-server-mode-map)
65
66 (defvar gnus-server-menu-hook nil
67 "*Hook run after the creation of the server mode menu.")
68
69 (defun gnus-server-make-menu-bar ()
70 (gnus-visual-turn-off-edit-menu 'server)
71 (unless (boundp 'gnus-server-server-menu)
72 (easy-menu-define
73 gnus-server-server-menu gnus-server-mode-map ""
74 '("Server"
75 ["Add" gnus-server-add-server t]
76 ["Browse" gnus-server-read-server t]
77 ["List" gnus-server-list-servers t]
78 ["Kill" gnus-server-kill-server t]
79 ["Yank" gnus-server-yank-server t]
80 ["Copy" gnus-server-copy-server t]
81 ["Edit" gnus-server-edit-server t]
82 ["Exit" gnus-server-exit t]
83 ))
84
85 (easy-menu-define
86 gnus-server-connections-menu gnus-server-mode-map ""
87 '("Connections"
88 ["Open" gnus-server-open-server t]
89 ["Close" gnus-server-close-server t]
90 ["Deny" gnus-server-deny-server t]
91 ["Reset" gnus-server-remove-denials t]
92 ))
93
94 (run-hooks 'gnus-server-menu-hook)))
95
96 (defvar gnus-server-mode-map nil)
97 (put 'gnus-server-mode 'mode-class 'special)
98
99 (unless gnus-server-mode-map
100 (setq gnus-server-mode-map (make-sparse-keymap))
101 (suppress-keymap gnus-server-mode-map)
102
103 (gnus-define-keys
104 gnus-server-mode-map
105 " " gnus-server-read-server
106 "\r" gnus-server-read-server
107 gnus-mouse-2 gnus-server-pick-server
108 "q" gnus-server-exit
109 "l" gnus-server-list-servers
110 "k" gnus-server-kill-server
111 "y" gnus-server-yank-server
112 "c" gnus-server-copy-server
113 "a" gnus-server-add-server
114 "e" gnus-server-edit-server
115
116 "O" gnus-server-open-server
117 "C" gnus-server-close-server
118 "D" gnus-server-deny-server
119 "R" gnus-server-remove-denials
120
121 "\C-c\C-i" gnus-info-find-node))
122
123 (defun gnus-server-mode ()
124 "Major mode for listing and editing servers.
125
126 All normal editing commands are switched off.
127 \\<gnus-server-mode-map>
128 For more in-depth information on this mode, read the manual
129 (`\\[gnus-info-find-node]').
130
131 The following commands are available:
132
133 \\{gnus-server-mode-map}"
134 (interactive)
135 (when (and menu-bar-mode
136 (gnus-visual-p 'server-menu 'menu))
137 (gnus-server-make-menu-bar))
138 (kill-all-local-variables)
139 (gnus-simplify-mode-line)
140 (setq major-mode 'gnus-server-mode)
141 (setq mode-name "Server")
142 ; (gnus-group-set-mode-line)
143 (setq mode-line-process nil)
144 (use-local-map gnus-server-mode-map)
145 (buffer-disable-undo (current-buffer))
146 (setq truncate-lines t)
147 (setq buffer-read-only t)
148 (run-hooks 'gnus-server-mode-hook))
149
150 (defun gnus-server-insert-server-line (name method)
151 (let* ((how (car method))
152 (where (nth 1 method))
153 (elem (assoc method gnus-opened-servers))
154 (status (cond ((eq (nth 1 elem) 'denied)
155 "(denied)")
156 ((or (gnus-server-opened method)
157 (eq (nth 1 elem) 'ok))
158 "(opened)")
159 (t
160 "(closed)"))))
161 (beginning-of-line)
162 (gnus-add-text-properties
163 (point)
164 (prog1 (1+ (point))
165 ;; Insert the text.
166 (eval gnus-server-line-format-spec))
167 (list 'gnus-server (intern name)))))
168
169 (defun gnus-enter-server-buffer ()
170 "Set up the server buffer."
171 (gnus-server-setup-buffer)
172 (gnus-configure-windows 'server)
173 (gnus-server-prepare))
174
175 (defun gnus-server-setup-buffer ()
176 "Initialize the server buffer."
177 (unless (get-buffer gnus-server-buffer)
178 (save-excursion
179 (set-buffer (get-buffer-create gnus-server-buffer))
180 (gnus-server-mode)
181 (when gnus-carpal
182 (gnus-carpal-setup-buffer 'server)))))
183
184 (defun gnus-server-prepare ()
185 (setq gnus-server-mode-line-format-spec
186 (gnus-parse-format gnus-server-mode-line-format
187 gnus-server-mode-line-format-alist))
188 (setq gnus-server-line-format-spec
189 (gnus-parse-format gnus-server-line-format
190 gnus-server-line-format-alist t))
191 (let ((alist gnus-server-alist)
192 (buffer-read-only nil)
193 (opened gnus-opened-servers)
194 done server op-ser)
195 (erase-buffer)
196 (setq gnus-inserted-opened-servers nil)
197 ;; First we do the real list of servers.
198 (while alist
199 (push (cdr (setq server (pop alist))) done)
200 (when (and server (car server) (cdr server))
201 (gnus-server-insert-server-line (car server) (cdr server))))
202 ;; Then we insert the list of servers that have been opened in
203 ;; this session.
204 (while opened
205 (unless (member (caar opened) done)
206 (gnus-server-insert-server-line
207 (setq op-ser (format "%s:%s" (caaar opened) (nth 1 (caar opened))))
208 (caar opened))
209 (push (list op-ser (caar opened)) gnus-inserted-opened-servers))
210 (setq opened (cdr opened))))
211 (goto-char (point-min))
212 (gnus-server-position-point))
213
214 (defun gnus-server-server-name ()
215 (let ((server (get-text-property (gnus-point-at-bol) 'gnus-server)))
216 (and server (symbol-name server))))
217
218 (defalias 'gnus-server-position-point 'gnus-goto-colon)
219
220 (defconst gnus-server-edit-buffer "*Gnus edit server*")
221
222 (defun gnus-server-update-server (server)
223 (save-excursion
224 (set-buffer gnus-server-buffer)
225 (let* ((buffer-read-only nil)
226 (entry (assoc server gnus-server-alist))
227 (oentry (assoc (gnus-server-to-method server)
228 gnus-opened-servers)))
229 (when entry
230 (gnus-dribble-enter
231 (concat "(gnus-server-set-info \"" server "\" '"
232 (prin1-to-string (cdr entry)) ")")))
233 (when (or entry oentry)
234 ;; Buffer may be narrowed.
235 (save-restriction
236 (widen)
237 (when (gnus-server-goto-server server)
238 (gnus-delete-line))
239 (if entry
240 (gnus-server-insert-server-line (car entry) (cdr entry))
241 (gnus-server-insert-server-line
242 (format "%s:%s" (caar oentry) (nth 1 (car oentry)))
243 (car oentry)))
244 (gnus-server-position-point))))))
245
246 (defun gnus-server-set-info (server info)
247 ;; Enter a select method into the virtual server alist.
248 (when (and server info)
249 (gnus-dribble-enter
250 (concat "(gnus-server-set-info \"" server "\" '"
251 (prin1-to-string info) ")"))
252 (let* ((server (nth 1 info))
253 (entry (assoc server gnus-server-alist)))
254 (if entry (setcdr entry info)
255 (setq gnus-server-alist
256 (nconc gnus-server-alist (list (cons server info))))))))
257
258 ;;; Interactive server functions.
259
260 (defun gnus-server-kill-server (server)
261 "Kill the server on the current line."
262 (interactive (list (gnus-server-server-name)))
263 (unless (gnus-server-goto-server server)
264 (if server (error "No such server: %s" server)
265 (error "No server on the current line")))
266 (unless (assoc server gnus-server-alist)
267 (error "Read-only server %s" server))
268 (gnus-dribble-enter "")
269 (let ((buffer-read-only nil))
270 (gnus-delete-line))
271 (setq gnus-server-killed-servers
272 (cons (assoc server gnus-server-alist) gnus-server-killed-servers))
273 (setq gnus-server-alist (delq (car gnus-server-killed-servers)
274 gnus-server-alist))
275 (gnus-server-position-point))
276
277 (defun gnus-server-yank-server ()
278 "Yank the previously killed server."
279 (interactive)
280 (or gnus-server-killed-servers
281 (error "No killed servers to be yanked"))
282 (let ((alist gnus-server-alist)
283 (server (gnus-server-server-name))
284 (killed (car gnus-server-killed-servers)))
285 (if (not server)
286 (setq gnus-server-alist (nconc gnus-server-alist (list killed)))
287 (if (string= server (caar gnus-server-alist))
288 (setq gnus-server-alist (cons killed gnus-server-alist))
289 (while (and (cdr alist)
290 (not (string= server (caadr alist))))
291 (setq alist (cdr alist)))
292 (if alist
293 (setcdr alist (cons killed (cdr alist)))
294 (setq gnus-server-alist (list killed)))))
295 (gnus-server-update-server (car killed))
296 (setq gnus-server-killed-servers (cdr gnus-server-killed-servers))
297 (gnus-server-position-point)))
298
299 (defun gnus-server-exit ()
300 "Return to the group buffer."
301 (interactive)
302 (kill-buffer (current-buffer))
303 (switch-to-buffer gnus-group-buffer)
304 (run-hooks 'gnus-server-exit-hook))
305
306 (defun gnus-server-list-servers ()
307 "List all available servers."
308 (interactive)
309 (let ((cur (gnus-server-server-name)))
310 (gnus-server-prepare)
311 (if cur (gnus-server-goto-server cur)
312 (goto-char (point-max))
313 (forward-line -1))
314 (gnus-server-position-point)))
315
316 (defun gnus-server-set-status (method status)
317 "Make METHOD have STATUS."
318 (let ((entry (assoc method gnus-opened-servers)))
319 (if entry
320 (setcar (cdr entry) status)
321 (push (list method status) gnus-opened-servers))))
322
323 (defun gnus-opened-servers-remove (method)
324 "Remove METHOD from the list of opened servers."
325 (setq gnus-opened-servers (delq (assoc method gnus-opened-servers)
326 gnus-opened-servers)))
327
328 (defun gnus-server-open-server (server)
329 "Force an open of SERVER."
330 (interactive (list (gnus-server-server-name)))
331 (let ((method (gnus-server-to-method server)))
332 (or method (error "No such server: %s" server))
333 (gnus-server-set-status method 'ok)
334 (prog1
335 (or (gnus-open-server method)
336 (progn (message "Couldn't open %s" server) nil))
337 (gnus-server-update-server server)
338 (gnus-server-position-point))))
339
340 (defun gnus-server-close-server (server)
341 "Close SERVER."
342 (interactive (list (gnus-server-server-name)))
343 (let ((method (gnus-server-to-method server)))
344 (or method (error "No such server: %s" server))
345 (gnus-server-set-status method 'closed)
346 (prog1
347 (gnus-close-server method)
348 (gnus-server-update-server server)
349 (gnus-server-position-point))))
350
351 (defun gnus-server-deny-server (server)
352 "Make sure SERVER will never be attempted opened."
353 (interactive (list (gnus-server-server-name)))
354 (let ((method (gnus-server-to-method server)))
355 (or method (error "No such server: %s" server))
356 (gnus-server-set-status method 'denied))
357 (gnus-server-update-server server)
358 (gnus-server-position-point)
359 t)
360
361 (defun gnus-server-remove-denials ()
362 "Make all denied servers into closed servers."
363 (interactive)
364 (let ((servers gnus-opened-servers))
365 (while servers
366 (when (eq (nth 1 (car servers)) 'denied)
367 (setcar (nthcdr 1 (car servers)) 'closed))
368 (setq servers (cdr servers))))
369 (gnus-server-list-servers))
370
371 (defun gnus-server-copy-server (from to)
372 (interactive
373 (list
374 (or (gnus-server-server-name)
375 (error "No server on the current line"))
376 (read-string "Copy to: ")))
377 (or from (error "No server on current line"))
378 (or (and to (not (string= to ""))) (error "No name to copy to"))
379 (and (assoc to gnus-server-alist) (error "%s already exists" to))
380 (or (assoc from gnus-server-alist)
381 (error "%s: no such server" from))
382 (let ((to-entry (gnus-copy-sequence (assoc from gnus-server-alist))))
383 (setcar to-entry to)
384 (setcar (nthcdr 2 to-entry) to)
385 (setq gnus-server-killed-servers
386 (cons to-entry gnus-server-killed-servers))
387 (gnus-server-yank-server)))
388
389 (defun gnus-server-add-server (how where)
390 (interactive
391 (list (intern (completing-read "Server method: "
392 gnus-valid-select-methods nil t))
393 (read-string "Server name: ")))
394 (setq gnus-server-killed-servers
395 (cons (list where how where) gnus-server-killed-servers))
396 (gnus-server-yank-server))
397
398 (defun gnus-server-goto-server (server)
399 "Jump to a server line."
400 (interactive
401 (list (completing-read "Goto server: " gnus-server-alist nil t)))
402 (let ((to (text-property-any (point-min) (point-max)
403 'gnus-server (intern server))))
404 (and to
405 (progn
406 (goto-char to)
407 (gnus-server-position-point)))))
408
409 (defun gnus-server-edit-server (server)
410 "Edit the server on the current line."
411 (interactive (list (gnus-server-server-name)))
412 (unless server
413 (error "No server on current line"))
414 (unless (assoc server gnus-server-alist)
415 (error "This server can't be edited"))
416 (let ((winconf (current-window-configuration))
417 (info (cdr (assoc server gnus-server-alist))))
418 (gnus-close-server info)
419 (get-buffer-create gnus-server-edit-buffer)
420 (gnus-configure-windows 'edit-server)
421 (gnus-add-current-to-buffer-list)
422 (emacs-lisp-mode)
423 (make-local-variable 'gnus-prev-winconf)
424 (setq gnus-prev-winconf winconf)
425 (use-local-map (copy-keymap (current-local-map)))
426 (let ((done-func '(lambda ()
427 "Exit editing mode and update the information."
428 (interactive)
429 (gnus-server-edit-server-done 'group))))
430 (setcar (cdr (nth 4 done-func)) server)
431 (local-set-key "\C-c\C-c" done-func))
432 (erase-buffer)
433 (insert ";; Type `C-c C-c' after you have edited the server.\n\n")
434 (insert (pp-to-string info))))
435
436 (defun gnus-server-edit-server-done (server)
437 (interactive)
438 (set-buffer (get-buffer-create gnus-server-edit-buffer))
439 (goto-char (point-min))
440 (let ((form (read (current-buffer)))
441 (winconf gnus-prev-winconf))
442 (gnus-server-set-info server form)
443 (kill-buffer (current-buffer))
444 (and winconf (set-window-configuration winconf))
445 (set-buffer gnus-server-buffer)
446 (gnus-server-update-server server)
447 (gnus-server-list-servers)
448 (gnus-server-position-point)))
449
450 (defun gnus-server-read-server (server)
451 "Browse a server."
452 (interactive (list (gnus-server-server-name)))
453 (let ((buf (current-buffer)))
454 (prog1
455 (gnus-browse-foreign-server (gnus-server-to-method server) buf)
456 (save-excursion
457 (set-buffer buf)
458 (gnus-server-update-server (gnus-server-server-name))
459 (gnus-server-position-point)))))
460
461 (defun gnus-server-pick-server (e)
462 (interactive "e")
463 (mouse-set-point e)
464 (gnus-server-read-server (gnus-server-server-name)))
465
466
467 ;;;
468 ;;; Browse Server Mode
469 ;;;
470
471 (defvar gnus-browse-menu-hook nil
472 "*Hook run after the creation of the browse mode menu.")
473
474 (defvar gnus-browse-mode-hook nil)
475 (defvar gnus-browse-mode-map nil)
476 (put 'gnus-browse-mode 'mode-class 'special)
477
478 (unless gnus-browse-mode-map
479 (setq gnus-browse-mode-map (make-keymap))
480 (suppress-keymap gnus-browse-mode-map)
481
482 (gnus-define-keys
483 gnus-browse-mode-map
484 " " gnus-browse-read-group
485 "=" gnus-browse-select-group
486 "n" gnus-browse-next-group
487 "p" gnus-browse-prev-group
488 "\177" gnus-browse-prev-group
489 "N" gnus-browse-next-group
490 "P" gnus-browse-prev-group
491 "\M-n" gnus-browse-next-group
492 "\M-p" gnus-browse-prev-group
493 "\r" gnus-browse-select-group
494 "u" gnus-browse-unsubscribe-current-group
495 "l" gnus-browse-exit
496 "L" gnus-browse-exit
497 "q" gnus-browse-exit
498 "Q" gnus-browse-exit
499 "\C-c\C-c" gnus-browse-exit
500 "?" gnus-browse-describe-briefly
501
502 "\C-c\C-i" gnus-info-find-node))
503
504 (defun gnus-browse-make-menu-bar ()
505 (gnus-visual-turn-off-edit-menu 'browse)
506 (or
507 (boundp 'gnus-browse-menu)
508 (progn
509 (easy-menu-define
510 gnus-browse-menu gnus-browse-mode-map ""
511 '("Browse"
512 ["Subscribe" gnus-browse-unsubscribe-current-group t]
513 ["Read" gnus-browse-read-group t]
514 ["Select" gnus-browse-read-group t]
515 ["Next" gnus-browse-next-group t]
516 ["Prev" gnus-browse-next-group t]
517 ["Exit" gnus-browse-exit t]
518 ))
519 (run-hooks 'gnus-browse-menu-hook))))
520
521 (defvar gnus-browse-current-method nil)
522 (defvar gnus-browse-return-buffer nil)
523
524 (defvar gnus-browse-buffer "*Gnus Browse Server*")
525
526 (defun gnus-browse-foreign-server (method &optional return-buffer)
527 "Browse the server METHOD."
528 (setq gnus-browse-current-method method)
529 (setq gnus-browse-return-buffer return-buffer)
530 (let ((gnus-select-method method)
531 groups group)
532 (gnus-message 5 "Connecting to %s..." (nth 1 method))
533 (cond
534 ((not (gnus-check-server method))
535 (gnus-message
536 1 "Unable to contact server: %s" (gnus-status-message method))
537 nil)
538 ((not (gnus-request-list method))
539 (gnus-message
540 1 "Couldn't request list: %s" (gnus-status-message method))
541 nil)
542 (t
543 (get-buffer-create gnus-browse-buffer)
544 (gnus-add-current-to-buffer-list)
545 (and gnus-carpal (gnus-carpal-setup-buffer 'browse))
546 (gnus-configure-windows 'browse)
547 (buffer-disable-undo (current-buffer))
548 (let ((buffer-read-only nil))
549 (erase-buffer))
550 (gnus-browse-mode)
551 (setq mode-line-buffer-identification
552 (list
553 (format
554 "Gnus: %%b {%s:%s}" (car method) (cadr method))))
555 (save-excursion
556 (set-buffer nntp-server-buffer)
557 (let ((cur (current-buffer)))
558 (goto-char (point-min))
559 (or (string= gnus-ignored-newsgroups "")
560 (delete-matching-lines gnus-ignored-newsgroups))
561 (while (re-search-forward
562 "\\(^[^ \t]+\\)[ \t]+[0-9]+[ \t]+[0-9]+" nil t)
563 (goto-char (match-end 1))
564 (setq groups (cons (cons (match-string 1)
565 (max 0 (- (1+ (read cur)) (read cur))))
566 groups)))))
567 (setq groups (sort groups
568 (lambda (l1 l2)
569 (string< (car l1) (car l2)))))
570 (let ((buffer-read-only nil))
571 (while groups
572 (setq group (car groups))
573 (insert
574 (format "K%7d: %s\n" (cdr group) (car group)))
575 (setq groups (cdr groups))))
576 (switch-to-buffer (current-buffer))
577 (goto-char (point-min))
578 (gnus-group-position-point)
579 (gnus-message 5 "Connecting to %s...done" (nth 1 method))
580 t))))
581
582 (defun gnus-browse-mode ()
583 "Major mode for browsing a foreign server.
584
585 All normal editing commands are switched off.
586
587 \\<gnus-browse-mode-map>
588 The only things you can do in this buffer is
589
590 1) `\\[gnus-browse-unsubscribe-current-group]' to subscribe to a group.
591 The group will be inserted into the group buffer upon exit from this
592 buffer.
593
594 2) `\\[gnus-browse-read-group]' to read a group ephemerally.
595
596 3) `\\[gnus-browse-exit]' to return to the group buffer."
597 (interactive)
598 (kill-all-local-variables)
599 (when (and menu-bar-mode
600 (gnus-visual-p 'browse-menu 'menu))
601 (gnus-browse-make-menu-bar))
602 (gnus-simplify-mode-line)
603 (setq major-mode 'gnus-browse-mode)
604 (setq mode-name "Browse Server")
605 (setq mode-line-process nil)
606 (use-local-map gnus-browse-mode-map)
607 (buffer-disable-undo (current-buffer))
608 (setq truncate-lines t)
609 (setq buffer-read-only t)
610 (run-hooks 'gnus-browse-mode-hook))
611
612 (defun gnus-browse-read-group (&optional no-article)
613 "Enter the group at the current line."
614 (interactive)
615 (let ((group (gnus-browse-group-name)))
616 (or (gnus-group-read-ephemeral-group
617 group gnus-browse-current-method nil
618 (cons (current-buffer) 'browse))
619 (error "Couldn't enter %s" group))))
620
621 (defun gnus-browse-select-group ()
622 "Select the current group."
623 (interactive)
624 (gnus-browse-read-group 'no))
625
626 (defun gnus-browse-next-group (n)
627 "Go to the next group."
628 (interactive "p")
629 (prog1
630 (forward-line n)
631 (gnus-group-position-point)))
632
633 (defun gnus-browse-prev-group (n)
634 "Go to the next group."
635 (interactive "p")
636 (gnus-browse-next-group (- n)))
637
638 (defun gnus-browse-unsubscribe-current-group (arg)
639 "(Un)subscribe to the next ARG groups."
640 (interactive "p")
641 (when (eobp)
642 (error "No group at current line."))
643 (let ((ward (if (< arg 0) -1 1))
644 (arg (abs arg)))
645 (while (and (> arg 0)
646 (not (eobp))
647 (gnus-browse-unsubscribe-group)
648 (zerop (gnus-browse-next-group ward)))
649 (decf arg))
650 (gnus-group-position-point)
651 (if (/= 0 arg) (gnus-message 7 "No more newsgroups"))
652 arg))
653
654 (defun gnus-browse-group-name ()
655 (save-excursion
656 (beginning-of-line)
657 (when (re-search-forward ": \\(.*\\)$" (gnus-point-at-eol) t)
658 (gnus-group-prefixed-name (match-string 1) gnus-browse-current-method))))
659
660 (defun gnus-browse-unsubscribe-group ()
661 "Toggle subscription of the current group in the browse buffer."
662 (let ((sub nil)
663 (buffer-read-only nil)
664 group)
665 (save-excursion
666 (beginning-of-line)
667 ;; If this group it killed, then we want to subscribe it.
668 (if (= (following-char) ?K) (setq sub t))
669 (setq group (gnus-browse-group-name))
670 (delete-char 1)
671 (if sub
672 (progn
673 (gnus-group-change-level
674 (list t group gnus-level-default-subscribed
675 nil nil gnus-browse-current-method)
676 gnus-level-default-subscribed gnus-level-killed
677 (and (car (nth 1 gnus-newsrc-alist))
678 (gnus-gethash (car (nth 1 gnus-newsrc-alist))
679 gnus-newsrc-hashtb))
680 t)
681 (insert ? ))
682 (gnus-group-change-level
683 group gnus-level-killed gnus-level-default-subscribed)
684 (insert ?K)))
685 t))
686
687 (defun gnus-browse-exit ()
688 "Quit browsing and return to the group buffer."
689 (interactive)
690 (when (eq major-mode 'gnus-browse-mode)
691 (kill-buffer (current-buffer)))
692 ;; Insert the newly subscribed groups in the group buffer.
693 (save-excursion
694 (set-buffer gnus-group-buffer)
695 (gnus-group-list-groups nil))
696 (if gnus-browse-return-buffer
697 (gnus-configure-windows 'server 'force)
698 (gnus-configure-windows 'group 'force)))
699
700 (defun gnus-browse-describe-briefly ()
701 "Give a one line description of the group mode commands."
702 (interactive)
703 (gnus-message 6
704 (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")))
705
706 (provide 'gnus-srvr)
707
708 ;;; gnus-srvr.el ends here.