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1 | ;;; gnus-srvr.el --- virtual server support for Gnus |
2 | ;; Copyright (C) 1995,96,97 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 | (require 'gnus-spec) | |
30 | (require 'gnus-group) | |
31 | (require 'gnus-int) | |
32 | (require 'gnus-range) | |
33 | ||
34 | (defvar gnus-server-mode-hook nil | |
35 | "Hook run in `gnus-server-mode' buffers.") | |
36 | ||
37 | (defconst gnus-server-line-format " {%(%h:%w%)} %s\n" | |
38 | "Format of server lines. | |
39 | It works along the same lines as a normal formatting string, | |
40 | with some simple extensions.") | |
41 | ||
42 | (defvar gnus-server-mode-line-format "Gnus List of servers" | |
43 | "The format specification for the server mode line.") | |
44 | ||
45 | (defvar gnus-server-exit-hook nil | |
46 | "*Hook run when exiting the server buffer.") | |
47 | ||
48 | ;;; Internal variables. | |
49 | ||
50 | (defvar gnus-inserted-opened-servers nil) | |
51 | ||
52 | (defvar gnus-server-line-format-alist | |
53 | `((?h how ?s) | |
54 | (?n name ?s) | |
55 | (?w where ?s) | |
56 | (?s status ?s))) | |
57 | ||
58 | (defvar gnus-server-mode-line-format-alist | |
59 | `((?S news-server ?s) | |
60 | (?M news-method ?s) | |
61 | (?u user-defined ?s))) | |
62 | ||
63 | (defvar gnus-server-line-format-spec nil) | |
64 | (defvar gnus-server-mode-line-format-spec nil) | |
65 | (defvar gnus-server-killed-servers nil) | |
66 | ||
67 | (defvar gnus-server-mode-map) | |
68 | ||
69 | (defvar gnus-server-menu-hook nil | |
70 | "*Hook run after the creation of the server mode menu.") | |
71 | ||
72 | (defun gnus-server-make-menu-bar () | |
73 | (gnus-turn-off-edit-menu 'server) | |
74 | (unless (boundp 'gnus-server-server-menu) | |
75 | (easy-menu-define | |
76 | gnus-server-server-menu gnus-server-mode-map "" | |
77 | '("Server" | |
78 | ["Add" gnus-server-add-server t] | |
79 | ["Browse" gnus-server-read-server t] | |
80 | ["Scan" gnus-server-scan-server t] | |
81 | ["List" gnus-server-list-servers t] | |
82 | ["Kill" gnus-server-kill-server t] | |
83 | ["Yank" gnus-server-yank-server t] | |
84 | ["Copy" gnus-server-copy-server t] | |
85 | ["Edit" gnus-server-edit-server t] | |
86 | ["Regenerate" gnus-server-regenerate-server t] | |
87 | ["Exit" gnus-server-exit t])) | |
88 | ||
89 | (easy-menu-define | |
90 | gnus-server-connections-menu gnus-server-mode-map "" | |
91 | '("Connections" | |
92 | ["Open" gnus-server-open-server t] | |
93 | ["Close" gnus-server-close-server t] | |
94 | ["Deny" gnus-server-deny-server t] | |
95 | "---" | |
96 | ["Open All" gnus-server-open-all-servers t] | |
97 | ["Close All" gnus-server-close-all-servers t] | |
98 | ["Reset All" gnus-server-remove-denials t])) | |
99 | ||
100 | (run-hooks 'gnus-server-menu-hook))) | |
101 | ||
102 | (defvar gnus-server-mode-map nil) | |
103 | (put 'gnus-server-mode 'mode-class 'special) | |
104 | ||
105 | (unless gnus-server-mode-map | |
106 | (setq gnus-server-mode-map (make-sparse-keymap)) | |
107 | (suppress-keymap gnus-server-mode-map) | |
108 | ||
109 | (gnus-define-keys | |
110 | gnus-server-mode-map | |
111 | " " gnus-server-read-server | |
112 | "\r" gnus-server-read-server | |
113 | gnus-mouse-2 gnus-server-pick-server | |
114 | "q" gnus-server-exit | |
115 | "l" gnus-server-list-servers | |
116 | "k" gnus-server-kill-server | |
117 | "y" gnus-server-yank-server | |
118 | "c" gnus-server-copy-server | |
119 | "a" gnus-server-add-server | |
120 | "e" gnus-server-edit-server | |
121 | "s" gnus-server-scan-server | |
122 | ||
123 | "O" gnus-server-open-server | |
124 | "\M-o" gnus-server-open-all-servers | |
125 | "C" gnus-server-close-server | |
126 | "\M-c" gnus-server-close-all-servers | |
127 | "D" gnus-server-deny-server | |
128 | "R" gnus-server-remove-denials | |
129 | ||
130 | "g" gnus-server-regenerate-server | |
131 | ||
132 | "\C-c\C-i" gnus-info-find-node | |
133 | "\C-c\C-b" gnus-bug)) | |
134 | ||
135 | (defun gnus-server-mode () | |
136 | "Major mode for listing and editing servers. | |
137 | ||
138 | All normal editing commands are switched off. | |
139 | \\<gnus-server-mode-map> | |
140 | For more in-depth information on this mode, read the manual | |
141 | (`\\[gnus-info-find-node]'). | |
142 | ||
143 | The following commands are available: | |
144 | ||
145 | \\{gnus-server-mode-map}" | |
146 | (interactive) | |
147 | (when (gnus-visual-p 'server-menu 'menu) | |
148 | (gnus-server-make-menu-bar)) | |
149 | (kill-all-local-variables) | |
150 | (gnus-simplify-mode-line) | |
151 | (setq major-mode 'gnus-server-mode) | |
152 | (setq mode-name "Server") | |
153 | (gnus-set-default-directory) | |
154 | (setq mode-line-process nil) | |
155 | (use-local-map gnus-server-mode-map) | |
156 | (buffer-disable-undo (current-buffer)) | |
157 | (setq truncate-lines t) | |
158 | (setq buffer-read-only t) | |
159 | (run-hooks 'gnus-server-mode-hook)) | |
160 | ||
161 | (defun gnus-server-insert-server-line (name method) | |
162 | (let* ((how (car method)) | |
163 | (where (nth 1 method)) | |
164 | (elem (assoc method gnus-opened-servers)) | |
165 | (status (cond ((eq (nth 1 elem) 'denied) | |
166 | "(denied)") | |
167 | ((or (gnus-server-opened method) | |
168 | (eq (nth 1 elem) 'ok)) | |
169 | "(opened)") | |
170 | (t | |
171 | "(closed)")))) | |
172 | (beginning-of-line) | |
173 | (gnus-add-text-properties | |
174 | (point) | |
175 | (prog1 (1+ (point)) | |
176 | ;; Insert the text. | |
177 | (eval gnus-server-line-format-spec)) | |
178 | (list 'gnus-server (intern name))))) | |
179 | ||
180 | (defun gnus-enter-server-buffer () | |
181 | "Set up the server buffer." | |
182 | (gnus-server-setup-buffer) | |
183 | (gnus-configure-windows 'server) | |
184 | (gnus-server-prepare)) | |
185 | ||
186 | (defun gnus-server-setup-buffer () | |
187 | "Initialize the server buffer." | |
188 | (unless (get-buffer gnus-server-buffer) | |
189 | (save-excursion | |
190 | (set-buffer (get-buffer-create gnus-server-buffer)) | |
191 | (gnus-server-mode) | |
192 | (when gnus-carpal | |
193 | (gnus-carpal-setup-buffer 'server))))) | |
194 | ||
195 | (defun gnus-server-prepare () | |
196 | (setq gnus-server-mode-line-format-spec | |
197 | (gnus-parse-format gnus-server-mode-line-format | |
198 | gnus-server-mode-line-format-alist)) | |
199 | (setq gnus-server-line-format-spec | |
200 | (gnus-parse-format gnus-server-line-format | |
201 | gnus-server-line-format-alist t)) | |
202 | (let ((alist gnus-server-alist) | |
203 | (buffer-read-only nil) | |
204 | (opened gnus-opened-servers) | |
205 | done server op-ser) | |
206 | (erase-buffer) | |
207 | (setq gnus-inserted-opened-servers nil) | |
208 | ;; First we do the real list of servers. | |
209 | (while alist | |
210 | (unless (member (cdar alist) done) | |
211 | (push (cdar alist) done) | |
212 | (cdr (setq server (pop alist))) | |
213 | (when (and server (car server) (cdr server)) | |
214 | (gnus-server-insert-server-line (car server) (cdr server)))) | |
215 | (when (member (cdar alist) done) | |
216 | (pop alist))) | |
217 | ;; Then we insert the list of servers that have been opened in | |
218 | ;; this session. | |
219 | (while opened | |
220 | (unless (member (caar opened) done) | |
221 | (push (caar opened) done) | |
222 | (gnus-server-insert-server-line | |
223 | (setq op-ser (format "%s:%s" (caaar opened) (nth 1 (caar opened)))) | |
224 | (caar opened)) | |
225 | (push (list op-ser (caar opened)) gnus-inserted-opened-servers)) | |
226 | (setq opened (cdr opened)))) | |
227 | (goto-char (point-min)) | |
228 | (gnus-server-position-point)) | |
229 | ||
230 | (defun gnus-server-server-name () | |
231 | (let ((server (get-text-property (gnus-point-at-bol) 'gnus-server))) | |
232 | (and server (symbol-name server)))) | |
233 | ||
234 | (defalias 'gnus-server-position-point 'gnus-goto-colon) | |
235 | ||
236 | (defconst gnus-server-edit-buffer "*Gnus edit server*") | |
237 | ||
238 | (defun gnus-server-update-server (server) | |
239 | (save-excursion | |
240 | (set-buffer gnus-server-buffer) | |
241 | (let* ((buffer-read-only nil) | |
242 | (entry (assoc server gnus-server-alist)) | |
243 | (oentry (assoc (gnus-server-to-method server) | |
244 | gnus-opened-servers))) | |
245 | (when entry | |
246 | (gnus-dribble-enter | |
247 | (concat "(gnus-server-set-info \"" server "\" '" | |
248 | (prin1-to-string (cdr entry)) ")\n"))) | |
249 | (when (or entry oentry) | |
250 | ;; Buffer may be narrowed. | |
251 | (save-restriction | |
252 | (widen) | |
253 | (when (gnus-server-goto-server server) | |
254 | (gnus-delete-line)) | |
255 | (if entry | |
256 | (gnus-server-insert-server-line (car entry) (cdr entry)) | |
257 | (gnus-server-insert-server-line | |
258 | (format "%s:%s" (caar oentry) (nth 1 (car oentry))) | |
259 | (car oentry))) | |
260 | (gnus-server-position-point)))))) | |
261 | ||
262 | (defun gnus-server-set-info (server info) | |
263 | ;; Enter a select method into the virtual server alist. | |
264 | (when (and server info) | |
265 | (gnus-dribble-enter | |
266 | (concat "(gnus-server-set-info \"" server "\" '" | |
267 | (prin1-to-string info) ")")) | |
268 | (let* ((server (nth 1 info)) | |
269 | (entry (assoc server gnus-server-alist))) | |
270 | (if entry (setcdr entry info) | |
271 | (setq gnus-server-alist | |
272 | (nconc gnus-server-alist (list (cons server info)))))))) | |
273 | ||
274 | ;;; Interactive server functions. | |
275 | ||
276 | (defun gnus-server-kill-server (server) | |
277 | "Kill the server on the current line." | |
278 | (interactive (list (gnus-server-server-name))) | |
279 | (unless (gnus-server-goto-server server) | |
280 | (if server (error "No such server: %s" server) | |
281 | (error "No server on the current line"))) | |
282 | (unless (assoc server gnus-server-alist) | |
283 | (error "Read-only server %s" server)) | |
284 | (gnus-dribble-enter "") | |
285 | (let ((buffer-read-only nil)) | |
286 | (gnus-delete-line)) | |
287 | (push (assoc server gnus-server-alist) gnus-server-killed-servers) | |
288 | (setq gnus-server-alist (delq (car gnus-server-killed-servers) | |
289 | gnus-server-alist)) | |
290 | (gnus-server-position-point)) | |
291 | ||
292 | (defun gnus-server-yank-server () | |
293 | "Yank the previously killed server." | |
294 | (interactive) | |
295 | (unless gnus-server-killed-servers | |
296 | (error "No killed servers to be yanked")) | |
297 | (let ((alist gnus-server-alist) | |
298 | (server (gnus-server-server-name)) | |
299 | (killed (car gnus-server-killed-servers))) | |
300 | (if (not server) | |
301 | (setq gnus-server-alist (nconc gnus-server-alist (list killed))) | |
302 | (if (string= server (caar gnus-server-alist)) | |
303 | (push killed gnus-server-alist) | |
304 | (while (and (cdr alist) | |
305 | (not (string= server (caadr alist)))) | |
306 | (setq alist (cdr alist))) | |
307 | (if alist | |
308 | (setcdr alist (cons killed (cdr alist))) | |
309 | (setq gnus-server-alist (list killed))))) | |
310 | (gnus-server-update-server (car killed)) | |
311 | (setq gnus-server-killed-servers (cdr gnus-server-killed-servers)) | |
312 | (gnus-server-position-point))) | |
313 | ||
314 | (defun gnus-server-exit () | |
315 | "Return to the group buffer." | |
316 | (interactive) | |
317 | (run-hooks 'gnus-server-exit-hook) | |
318 | (kill-buffer (current-buffer)) | |
319 | (gnus-configure-windows 'group t)) | |
320 | ||
321 | (defun gnus-server-list-servers () | |
322 | "List all available servers." | |
323 | (interactive) | |
324 | (let ((cur (gnus-server-server-name))) | |
325 | (gnus-server-prepare) | |
326 | (if cur (gnus-server-goto-server cur) | |
327 | (goto-char (point-max)) | |
328 | (forward-line -1)) | |
329 | (gnus-server-position-point))) | |
330 | ||
331 | (defun gnus-server-set-status (method status) | |
332 | "Make METHOD have STATUS." | |
333 | (let ((entry (assoc method gnus-opened-servers))) | |
334 | (if entry | |
335 | (setcar (cdr entry) status) | |
336 | (push (list method status) gnus-opened-servers)))) | |
337 | ||
338 | (defun gnus-opened-servers-remove (method) | |
339 | "Remove METHOD from the list of opened servers." | |
340 | (setq gnus-opened-servers (delq (assoc method gnus-opened-servers) | |
341 | gnus-opened-servers))) | |
342 | ||
343 | (defun gnus-server-open-server (server) | |
344 | "Force an open of SERVER." | |
345 | (interactive (list (gnus-server-server-name))) | |
346 | (let ((method (gnus-server-to-method server))) | |
347 | (unless method | |
348 | (error "No such server: %s" server)) | |
349 | (gnus-server-set-status method 'ok) | |
350 | (prog1 | |
351 | (or (gnus-open-server method) | |
352 | (progn (message "Couldn't open %s" server) nil)) | |
353 | (gnus-server-update-server server) | |
354 | (gnus-server-position-point)))) | |
355 | ||
356 | (defun gnus-server-open-all-servers () | |
357 | "Open all servers." | |
358 | (interactive) | |
359 | (let ((servers gnus-inserted-opened-servers)) | |
360 | (while servers | |
361 | (gnus-server-open-server (car (pop servers)))))) | |
362 | ||
363 | (defun gnus-server-close-server (server) | |
364 | "Close SERVER." | |
365 | (interactive (list (gnus-server-server-name))) | |
366 | (let ((method (gnus-server-to-method server))) | |
367 | (unless method | |
368 | (error "No such server: %s" server)) | |
369 | (gnus-server-set-status method 'closed) | |
370 | (prog1 | |
371 | (gnus-close-server method) | |
372 | (gnus-server-update-server server) | |
373 | (gnus-server-position-point)))) | |
374 | ||
375 | (defun gnus-server-close-all-servers () | |
376 | "Close all servers." | |
377 | (interactive) | |
378 | (let ((servers gnus-inserted-opened-servers)) | |
379 | (while servers | |
380 | (gnus-server-close-server (car (pop servers)))))) | |
381 | ||
382 | (defun gnus-server-deny-server (server) | |
383 | "Make sure SERVER will never be attempted opened." | |
384 | (interactive (list (gnus-server-server-name))) | |
385 | (let ((method (gnus-server-to-method server))) | |
386 | (unless method | |
387 | (error "No such server: %s" server)) | |
388 | (gnus-server-set-status method 'denied)) | |
389 | (gnus-server-update-server server) | |
390 | (gnus-server-position-point) | |
391 | t) | |
392 | ||
393 | (defun gnus-server-remove-denials () | |
394 | "Make all denied servers into closed servers." | |
395 | (interactive) | |
396 | (let ((servers gnus-opened-servers)) | |
397 | (while servers | |
398 | (when (eq (nth 1 (car servers)) 'denied) | |
399 | (setcar (nthcdr 1 (car servers)) 'closed)) | |
400 | (setq servers (cdr servers)))) | |
401 | (gnus-server-list-servers)) | |
402 | ||
403 | (defun gnus-server-copy-server (from to) | |
404 | (interactive | |
405 | (list | |
406 | (or (gnus-server-server-name) | |
407 | (error "No server on the current line")) | |
408 | (read-string "Copy to: "))) | |
409 | (unless from | |
410 | (error "No server on current line")) | |
411 | (unless (and to (not (string= to ""))) | |
412 | (error "No name to copy to")) | |
413 | (when (assoc to gnus-server-alist) | |
414 | (error "%s already exists" to)) | |
415 | (unless (gnus-server-to-method from) | |
416 | (error "%s: no such server" from)) | |
417 | (let ((to-entry (cons from (gnus-copy-sequence | |
418 | (gnus-server-to-method from))))) | |
419 | (setcar to-entry to) | |
420 | (setcar (nthcdr 2 to-entry) to) | |
421 | (push to-entry gnus-server-killed-servers) | |
422 | (gnus-server-yank-server))) | |
423 | ||
424 | (defun gnus-server-add-server (how where) | |
425 | (interactive | |
426 | (list (intern (completing-read "Server method: " | |
427 | gnus-valid-select-methods nil t)) | |
428 | (read-string "Server name: "))) | |
429 | (when (assq where gnus-server-alist) | |
430 | (error "Server with that name already defined")) | |
431 | (push (list where how where) gnus-server-killed-servers) | |
432 | (gnus-server-yank-server)) | |
433 | ||
434 | (defun gnus-server-goto-server (server) | |
435 | "Jump to a server line." | |
436 | (interactive | |
437 | (list (completing-read "Goto server: " gnus-server-alist nil t))) | |
438 | (let ((to (text-property-any (point-min) (point-max) | |
439 | 'gnus-server (intern server)))) | |
440 | (when to | |
441 | (goto-char to) | |
442 | (gnus-server-position-point)))) | |
443 | ||
444 | (defun gnus-server-edit-server (server) | |
445 | "Edit the server on the current line." | |
446 | (interactive (list (gnus-server-server-name))) | |
447 | (unless server | |
448 | (error "No server on current line")) | |
449 | (unless (assoc server gnus-server-alist) | |
450 | (error "This server can't be edited")) | |
451 | (let ((info (cdr (assoc server gnus-server-alist)))) | |
452 | (gnus-close-server info) | |
453 | (gnus-edit-form | |
454 | info "Editing the server." | |
455 | `(lambda (form) | |
456 | (gnus-server-set-info ,server form) | |
457 | (gnus-server-list-servers) | |
458 | (gnus-server-position-point))))) | |
459 | ||
460 | (defun gnus-server-scan-server (server) | |
461 | "Request a scan from the current server." | |
462 | (interactive (list (gnus-server-server-name))) | |
463 | (gnus-message 3 "Scanning %s...done" server) | |
464 | (gnus-request-scan nil (gnus-server-to-method server)) | |
465 | (gnus-message 3 "Scanning %s...done" server)) | |
466 | ||
467 | (defun gnus-server-read-server (server) | |
468 | "Browse a server." | |
469 | (interactive (list (gnus-server-server-name))) | |
470 | (let ((buf (current-buffer))) | |
471 | (prog1 | |
472 | (gnus-browse-foreign-server (gnus-server-to-method server) buf) | |
473 | (save-excursion | |
474 | (set-buffer buf) | |
475 | (gnus-server-update-server (gnus-server-server-name)) | |
476 | (gnus-server-position-point))))) | |
477 | ||
478 | (defun gnus-server-pick-server (e) | |
479 | (interactive "e") | |
480 | (mouse-set-point e) | |
481 | (gnus-server-read-server (gnus-server-server-name))) | |
482 | ||
483 | \f | |
484 | ;;; | |
485 | ;;; Browse Server Mode | |
486 | ;;; | |
487 | ||
488 | (defvar gnus-browse-menu-hook nil | |
489 | "*Hook run after the creation of the browse mode menu.") | |
490 | ||
491 | (defvar gnus-browse-mode-hook nil) | |
492 | (defvar gnus-browse-mode-map nil) | |
493 | (put 'gnus-browse-mode 'mode-class 'special) | |
494 | ||
495 | (unless gnus-browse-mode-map | |
496 | (setq gnus-browse-mode-map (make-keymap)) | |
497 | (suppress-keymap gnus-browse-mode-map) | |
498 | ||
499 | (gnus-define-keys | |
500 | gnus-browse-mode-map | |
501 | " " gnus-browse-read-group | |
502 | "=" gnus-browse-select-group | |
503 | "n" gnus-browse-next-group | |
504 | "p" gnus-browse-prev-group | |
505 | "\177" gnus-browse-prev-group | |
506 | "N" gnus-browse-next-group | |
507 | "P" gnus-browse-prev-group | |
508 | "\M-n" gnus-browse-next-group | |
509 | "\M-p" gnus-browse-prev-group | |
510 | "\r" gnus-browse-select-group | |
511 | "u" gnus-browse-unsubscribe-current-group | |
512 | "l" gnus-browse-exit | |
513 | "L" gnus-browse-exit | |
514 | "q" gnus-browse-exit | |
515 | "Q" gnus-browse-exit | |
516 | "\C-c\C-c" gnus-browse-exit | |
517 | "?" gnus-browse-describe-briefly | |
518 | ||
519 | "\C-c\C-i" gnus-info-find-node | |
520 | "\C-c\C-b" gnus-bug)) | |
521 | ||
522 | (defun gnus-browse-make-menu-bar () | |
523 | (gnus-turn-off-edit-menu 'browse) | |
524 | (unless (boundp 'gnus-browse-menu) | |
525 | (easy-menu-define | |
526 | gnus-browse-menu gnus-browse-mode-map "" | |
527 | '("Browse" | |
528 | ["Subscribe" gnus-browse-unsubscribe-current-group t] | |
529 | ["Read" gnus-browse-read-group t] | |
530 | ["Select" gnus-browse-read-group t] | |
531 | ["Next" gnus-browse-next-group t] | |
532 | ["Prev" gnus-browse-next-group t] | |
533 | ["Exit" gnus-browse-exit t])) | |
534 | (run-hooks 'gnus-browse-menu-hook))) | |
535 | ||
536 | (defvar gnus-browse-current-method nil) | |
537 | (defvar gnus-browse-return-buffer nil) | |
538 | ||
539 | (defvar gnus-browse-buffer "*Gnus Browse Server*") | |
540 | ||
541 | (defun gnus-browse-foreign-server (method &optional return-buffer) | |
542 | "Browse the server METHOD." | |
543 | (setq gnus-browse-current-method method) | |
544 | (setq gnus-browse-return-buffer return-buffer) | |
545 | (when (stringp method) | |
546 | (setq method (gnus-server-to-method method))) | |
547 | (let ((gnus-select-method method) | |
548 | groups group) | |
549 | (gnus-message 5 "Connecting to %s..." (nth 1 method)) | |
550 | (cond | |
551 | ((not (gnus-check-server method)) | |
552 | (gnus-message | |
553 | 1 "Unable to contact server: %s" (gnus-status-message method)) | |
554 | nil) | |
555 | ((not | |
556 | (prog2 | |
557 | (gnus-message 6 "Reading active file...") | |
558 | (gnus-request-list method) | |
559 | (gnus-message 6 "Reading active file...done"))) | |
560 | (gnus-message | |
561 | 1 "Couldn't request list: %s" (gnus-status-message method)) | |
562 | nil) | |
563 | (t | |
564 | (get-buffer-create gnus-browse-buffer) | |
565 | (gnus-add-current-to-buffer-list) | |
566 | (when gnus-carpal | |
567 | (gnus-carpal-setup-buffer 'browse)) | |
568 | (gnus-configure-windows 'browse) | |
569 | (buffer-disable-undo (current-buffer)) | |
570 | (let ((buffer-read-only nil)) | |
571 | (erase-buffer)) | |
572 | (gnus-browse-mode) | |
573 | (setq mode-line-buffer-identification | |
574 | (list | |
575 | (format | |
576 | "Gnus: %%b {%s:%s}" (car method) (cadr method)))) | |
577 | (save-excursion | |
578 | (set-buffer nntp-server-buffer) | |
579 | (let ((cur (current-buffer))) | |
580 | (goto-char (point-min)) | |
581 | (unless (string= gnus-ignored-newsgroups "") | |
582 | (delete-matching-lines gnus-ignored-newsgroups)) | |
583 | (while (re-search-forward | |
584 | "\\(^[^ \t]+\\)[ \t]+[0-9]+[ \t]+[0-9]+" nil t) | |
585 | (goto-char (match-end 1)) | |
586 | (push (cons (match-string 1) | |
587 | (max 0 (- (1+ (read cur)) (read cur)))) | |
588 | groups)))) | |
589 | (setq groups (sort groups | |
590 | (lambda (l1 l2) | |
591 | (string< (car l1) (car l2))))) | |
592 | (let ((buffer-read-only nil)) | |
593 | (while groups | |
594 | (setq group (car groups)) | |
595 | (insert | |
596 | (format "K%7d: %s\n" (cdr group) (car group))) | |
597 | (setq groups (cdr groups)))) | |
598 | (switch-to-buffer (current-buffer)) | |
599 | (goto-char (point-min)) | |
600 | (gnus-group-position-point) | |
601 | (gnus-message 5 "Connecting to %s...done" (nth 1 method)) | |
602 | t)))) | |
603 | ||
604 | (defun gnus-browse-mode () | |
605 | "Major mode for browsing a foreign server. | |
606 | ||
607 | All normal editing commands are switched off. | |
608 | ||
609 | \\<gnus-browse-mode-map> | |
610 | The only things you can do in this buffer is | |
611 | ||
612 | 1) `\\[gnus-browse-unsubscribe-current-group]' to subscribe to a group. | |
613 | The group will be inserted into the group buffer upon exit from this | |
614 | buffer. | |
615 | ||
616 | 2) `\\[gnus-browse-read-group]' to read a group ephemerally. | |
617 | ||
618 | 3) `\\[gnus-browse-exit]' to return to the group buffer." | |
619 | (interactive) | |
620 | (kill-all-local-variables) | |
621 | (when (gnus-visual-p 'browse-menu 'menu) | |
622 | (gnus-browse-make-menu-bar)) | |
623 | (gnus-simplify-mode-line) | |
624 | (setq major-mode 'gnus-browse-mode) | |
625 | (setq mode-name "Browse Server") | |
626 | (setq mode-line-process nil) | |
627 | (use-local-map gnus-browse-mode-map) | |
628 | (buffer-disable-undo (current-buffer)) | |
629 | (setq truncate-lines t) | |
630 | (gnus-set-default-directory) | |
631 | (setq buffer-read-only t) | |
632 | (run-hooks 'gnus-browse-mode-hook)) | |
633 | ||
634 | (defun gnus-browse-read-group (&optional no-article) | |
635 | "Enter the group at the current line." | |
636 | (interactive) | |
637 | (let ((group (gnus-group-real-name (gnus-browse-group-name)))) | |
638 | (unless (gnus-group-read-ephemeral-group | |
639 | group gnus-browse-current-method nil | |
640 | (cons (current-buffer) 'browse)) | |
641 | (error "Couldn't enter %s" group)))) | |
642 | ||
643 | (defun gnus-browse-select-group () | |
644 | "Select the current group." | |
645 | (interactive) | |
646 | (gnus-browse-read-group 'no)) | |
647 | ||
648 | (defun gnus-browse-next-group (n) | |
649 | "Go to the next group." | |
650 | (interactive "p") | |
651 | (prog1 | |
652 | (forward-line n) | |
653 | (gnus-group-position-point))) | |
654 | ||
655 | (defun gnus-browse-prev-group (n) | |
656 | "Go to the next group." | |
657 | (interactive "p") | |
658 | (gnus-browse-next-group (- n))) | |
659 | ||
660 | (defun gnus-browse-unsubscribe-current-group (arg) | |
661 | "(Un)subscribe to the next ARG groups." | |
662 | (interactive "p") | |
663 | (when (eobp) | |
664 | (error "No group at current line.")) | |
665 | (let ((ward (if (< arg 0) -1 1)) | |
666 | (arg (abs arg))) | |
667 | (while (and (> arg 0) | |
668 | (not (eobp)) | |
669 | (gnus-browse-unsubscribe-group) | |
670 | (zerop (gnus-browse-next-group ward))) | |
671 | (decf arg)) | |
672 | (gnus-group-position-point) | |
673 | (when (/= 0 arg) | |
674 | (gnus-message 7 "No more newsgroups")) | |
675 | arg)) | |
676 | ||
677 | (defun gnus-browse-group-name () | |
678 | (save-excursion | |
679 | (beginning-of-line) | |
680 | (when (re-search-forward ": \\(.*\\)$" (gnus-point-at-eol) t) | |
681 | (gnus-group-prefixed-name | |
682 | ;; Remove text props. | |
683 | (format "%s" (match-string 1)) | |
684 | gnus-browse-current-method)))) | |
685 | ||
686 | (defun gnus-browse-unsubscribe-group () | |
687 | "Toggle subscription of the current group in the browse buffer." | |
688 | (let ((sub nil) | |
689 | (buffer-read-only nil) | |
690 | group) | |
691 | (save-excursion | |
692 | (beginning-of-line) | |
693 | ;; If this group it killed, then we want to subscribe it. | |
694 | (when (= (following-char) ?K) | |
695 | (setq sub t)) | |
696 | (setq group (gnus-browse-group-name)) | |
697 | ;; Make sure the group has been properly removed before we | |
698 | ;; subscribe to it. | |
699 | (gnus-kill-ephemeral-group group) | |
700 | (delete-char 1) | |
701 | (if sub | |
702 | (progn | |
703 | (gnus-group-change-level | |
704 | (list t group gnus-level-default-subscribed | |
705 | nil nil gnus-browse-current-method) | |
706 | gnus-level-default-subscribed gnus-level-killed | |
707 | (and (car (nth 1 gnus-newsrc-alist)) | |
708 | (gnus-gethash (car (nth 1 gnus-newsrc-alist)) | |
709 | gnus-newsrc-hashtb)) | |
710 | t) | |
711 | (insert ? )) | |
712 | (gnus-group-change-level | |
713 | group gnus-level-killed gnus-level-default-subscribed) | |
714 | (insert ?K))) | |
715 | t)) | |
716 | ||
717 | (defun gnus-browse-exit () | |
718 | "Quit browsing and return to the group buffer." | |
719 | (interactive) | |
720 | (when (eq major-mode 'gnus-browse-mode) | |
721 | (kill-buffer (current-buffer))) | |
722 | ;; Insert the newly subscribed groups in the group buffer. | |
723 | (save-excursion | |
724 | (set-buffer gnus-group-buffer) | |
725 | (gnus-group-list-groups nil)) | |
726 | (if gnus-browse-return-buffer | |
727 | (gnus-configure-windows 'server 'force) | |
728 | (gnus-configure-windows 'group 'force))) | |
729 | ||
730 | (defun gnus-browse-describe-briefly () | |
731 | "Give a one line description of the group mode commands." | |
732 | (interactive) | |
733 | (gnus-message 6 | |
734 | (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"))) | |
735 | ||
736 | (defun gnus-server-regenerate-server () | |
737 | "Issue a command to the server to regenerate all its data structures." | |
738 | (interactive) | |
739 | (let ((server (gnus-server-server-name))) | |
740 | (unless server | |
741 | (error "No server on the current line")) | |
742 | (if (not (gnus-check-backend-function | |
743 | 'request-regenerate (car (gnus-server-to-method server)))) | |
744 | (error "This backend doesn't support regeneration") | |
745 | (gnus-message 5 "Requesting regeneration of %s..." server) | |
746 | (if (gnus-request-regenerate server) | |
747 | (gnus-message 5 "Requesting regeneration of %s...done" server) | |
748 | (gnus-message 5 "Couldn't regenerate %s" server))))) | |
749 | ||
750 | (provide 'gnus-srvr) | |
751 | ||
752 | ;;; gnus-srvr.el ends here. |