1 ;;; gnus-srvr.el --- virtual server support for Gnus
2 ;; Copyright (C) 1995 Free Software Foundation, Inc.
4 ;; Author: Lars Magne Ingebrigtsen <larsi@ifi.uio.no>
7 ;; This file is part of GNU Emacs.
9 ;; GNU Emacs is free software; you can redistribute it and/or modify
10 ;; it under the terms of the GNU General Public License as published by
11 ;; the Free Software Foundation; either version 2, or (at your option)
14 ;; GNU Emacs is distributed in the hope that it will be useful,
15 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
16 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 ;; GNU General Public License for more details.
19 ;; You should have received a copy of the GNU General Public License
20 ;; along with GNU Emacs; see the file COPYING. If not, write to
21 ;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
28 (eval-when-compile (require 'cl))
30 (defvar gnus-server-mode-hook nil
31 "Hook run in `gnus-server-mode' buffers.")
33 (defconst gnus-server-line-format " {%(%h:%w%)} %s\n"
34 "Format of server lines.
35 It works along the same lines as a normal formatting string,
36 with some simple extensions.")
38 (defvar gnus-server-mode-line-format "Gnus List of servers"
39 "The format specification for the server mode line.")
41 ;;; Internal variables.
43 (defconst gnus-server-line-format-alist
49 (defconst gnus-server-mode-line-format-alist
50 (` ((?S news-server ?s)
52 (?u user-defined ?s))))
54 (defvar gnus-server-line-format-spec nil)
55 (defvar gnus-server-mode-line-format-spec nil)
56 (defvar gnus-server-killed-servers nil)
58 (defvar gnus-server-mode-map nil)
59 (put 'gnus-server-mode 'mode-class 'special)
61 (if gnus-server-mode-map
63 (setq gnus-server-mode-map (make-sparse-keymap))
64 (suppress-keymap gnus-server-mode-map)
65 (define-key gnus-server-mode-map " " 'gnus-server-read-server)
66 (define-key gnus-server-mode-map "\r" 'gnus-server-read-server)
67 (define-key gnus-server-mode-map gnus-mouse-2 'gnus-server-pick-server)
68 (define-key gnus-server-mode-map "q" 'gnus-server-exit)
69 (define-key gnus-server-mode-map "l" 'gnus-server-list-servers)
70 (define-key gnus-server-mode-map "k" 'gnus-server-kill-server)
71 (define-key gnus-server-mode-map "y" 'gnus-server-yank-server)
72 (define-key gnus-server-mode-map "c" 'gnus-server-copy-server)
73 (define-key gnus-server-mode-map "a" 'gnus-server-add-server)
74 (define-key gnus-server-mode-map "e" 'gnus-server-edit-server)
76 (define-key gnus-server-mode-map "O" 'gnus-server-open-server)
77 (define-key gnus-server-mode-map "C" 'gnus-server-close-server)
78 (define-key gnus-server-mode-map "D" 'gnus-server-deny-server)
79 (define-key gnus-server-mode-map "R" 'gnus-server-remove-denials)
82 (defun gnus-server-mode ()
83 "Major mode for listing and editing servers.
85 All normal editing commands are switched off.
86 \\<gnus-server-mode-map>
88 For more in-depth information on this mode, read the manual (`\\[gnus-info-find-node]').
90 The following commands are available:
92 \\{gnus-server-mode-map}"
94 (when (and menu-bar-mode
95 (gnus-visual-p 'server-menu 'menu))
96 (gnus-server-make-menu-bar))
97 (kill-all-local-variables)
98 (gnus-simplify-mode-line)
99 (setq major-mode 'gnus-server-mode)
100 (setq mode-name "Server")
101 ; (gnus-group-set-mode-line)
102 (setq mode-line-process nil)
103 (use-local-map gnus-server-mode-map)
104 (buffer-disable-undo (current-buffer))
105 (setq truncate-lines t)
106 (setq buffer-read-only t)
107 (run-hooks 'gnus-server-mode-hook))
109 (defun gnus-server-insert-server-line (name method)
110 (let* ((how (car method))
111 (where (nth 1 method))
112 (elem (assoc method gnus-opened-servers))
113 (status (cond ((eq (nth 1 elem) 'denied)
115 ((or (gnus-server-opened method)
116 (eq (nth 1 elem) 'ok))
125 (eval gnus-server-line-format-spec))
126 (list 'gnus-server (intern name)))))
128 (defun gnus-enter-server-buffer ()
129 "Set up the server buffer."
130 (gnus-server-setup-buffer)
131 (gnus-configure-windows 'server)
132 (gnus-server-prepare))
134 (defun gnus-server-setup-buffer ()
135 "Initialize the server buffer."
136 (unless (get-buffer gnus-server-buffer)
138 (set-buffer (get-buffer-create gnus-server-buffer))
141 (gnus-carpal-setup-buffer 'server)))))
143 (defun gnus-server-prepare ()
144 (setq gnus-server-mode-line-format-spec
145 (gnus-parse-format gnus-server-mode-line-format
146 gnus-server-mode-line-format-alist))
147 (setq gnus-server-line-format-spec
148 (gnus-parse-format gnus-server-line-format
149 gnus-server-line-format-alist t))
150 (let ((alist gnus-server-alist)
151 (buffer-read-only nil)
152 (opened gnus-opened-servers)
155 ;; First we do the real list of servers.
157 (push (cdr (setq server (pop alist))) done)
159 (gnus-server-insert-server-line (car server) (cdr server))))
160 ;; Then we insert the list of servers that have been opened in
163 (unless (member (car (car opened)) done)
164 (gnus-server-insert-server-line
165 (format "%s:%s" (car (car (car opened))) (nth 1 (car (car opened))))
167 (setq opened (cdr opened))))
168 (goto-char (point-min))
169 (gnus-server-position-point))
171 (defun gnus-server-server-name ()
172 (let ((server (get-text-property (gnus-point-at-bol) 'gnus-server)))
173 (and server (symbol-name server))))
175 (defalias 'gnus-server-position-point 'gnus-goto-colon)
177 (defconst gnus-server-edit-buffer "*Gnus edit server*")
179 (defun gnus-server-update-server (server)
181 (set-buffer gnus-server-buffer)
182 (let ((buffer-read-only nil)
183 (info (cdr (assoc server gnus-server-alist))))
185 (concat "(gnus-server-set-info \"" server "\" '"
186 (prin1-to-string info) ")"))
187 ;; Buffer may be narrowed.
190 (if (gnus-server-goto-server server)
191 (delete-region (progn (beginning-of-line) (point))
192 (progn (forward-line 1) (point))))
193 (let ((entry (assoc server gnus-server-alist)))
194 (gnus-server-insert-server-line (car entry) (cdr entry))
195 (gnus-server-position-point))))))
197 (defun gnus-server-set-info (server info)
198 ;; Enter a select method into the virtual server alist.
200 (concat "(gnus-server-set-info \"" server "\" '"
201 (prin1-to-string info) ")"))
202 (let* ((server (nth 1 info))
203 (entry (assoc server gnus-server-alist)))
204 (if entry (setcdr entry info)
205 (setq gnus-server-alist
206 (nconc gnus-server-alist (list (cons server info)))))))
208 ;;; Interactive server functions.
210 (defun gnus-server-kill-server (server)
211 "Kill the server on the current line."
212 (interactive (list (gnus-server-server-name)))
213 (or (gnus-server-goto-server server)
214 (if server (error "No such server: %s" server)
215 (error "No server on the current line")))
216 (gnus-dribble-enter "")
217 (let ((buffer-read-only nil))
218 (delete-region (progn (beginning-of-line) (point))
219 (progn (forward-line 1) (point))))
220 (setq gnus-server-killed-servers
221 (cons (assoc server gnus-server-alist) gnus-server-killed-servers))
222 (setq gnus-server-alist (delq (car gnus-server-killed-servers)
224 (gnus-server-position-point))
226 (defun gnus-server-yank-server ()
227 "Yank the previously killed server."
229 (or gnus-server-killed-servers
230 (error "No killed servers to be yanked"))
231 (let ((alist gnus-server-alist)
232 (server (gnus-server-server-name))
233 (killed (car gnus-server-killed-servers)))
235 (setq gnus-server-alist (nconc gnus-server-alist (list killed)))
236 (if (string= server (car (car gnus-server-alist)))
237 (setq gnus-server-alist (cons killed gnus-server-alist))
238 (while (and (cdr alist)
239 (not (string= server (car (car (cdr alist))))))
240 (setq alist (cdr alist)))
241 (setcdr alist (cons killed (cdr alist)))
243 (setcdr alist (cons killed (cdr alist)))
244 (setq gnus-server-alist (list killed)))))
245 (gnus-server-update-server (car killed))
246 (setq gnus-server-killed-servers (cdr gnus-server-killed-servers))
247 (gnus-server-position-point)))
249 (defun gnus-server-exit ()
250 "Return to the group buffer."
252 (kill-buffer (current-buffer))
253 (switch-to-buffer gnus-group-buffer))
255 (defun gnus-server-list-servers ()
256 "List all available servers."
258 (let ((cur (gnus-server-server-name)))
259 (gnus-server-prepare)
260 (if cur (gnus-server-goto-server cur)
261 (goto-char (point-max))
263 (gnus-server-position-point)))
265 (defun gnus-opened-servers-remove (method)
266 "Remove METHOD from the list of opened servers."
267 (setq gnus-opened-servers (delq (assoc method gnus-opened-servers)
268 gnus-opened-servers)))
270 (defun gnus-server-open-server (server)
271 "Force an open of SERVER."
272 (interactive (list (gnus-server-server-name)))
273 (let ((method (gnus-server-to-method server)))
274 (or method (error "No such server: %s" server))
275 (gnus-opened-servers-remove method)
277 (or (gnus-open-server method)
278 (progn (message "Couldn't open %s" server) nil))
279 (gnus-server-update-server server)
280 (gnus-server-position-point))))
282 (defun gnus-server-close-server (server)
284 (interactive (list (gnus-server-server-name)))
285 (let ((method (gnus-server-to-method server)))
286 (or method (error "No such server: %s" server))
287 (gnus-opened-servers-remove method)
289 (gnus-close-server method)
290 (gnus-server-update-server server)
291 (gnus-server-position-point))))
293 (defun gnus-server-deny-server (server)
294 "Make sure SERVER will never be attempted opened."
295 (interactive (list (gnus-server-server-name)))
296 (let ((method (gnus-server-to-method server)))
297 (or method (error "No such server: %s" server))
298 (gnus-opened-servers-remove method)
299 (setq gnus-opened-servers
300 (cons (list method 'denied) gnus-opened-servers)))
301 (gnus-server-update-server server)
302 (gnus-server-position-point))
304 (defun gnus-server-remove-denials ()
305 "Make all denied servers into closed servers."
307 (let ((servers gnus-opened-servers))
309 (when (eq (nth 1 (car servers)) 'denied)
310 (setcar (nthcdr 1 (car servers)) 'closed))
311 (setq servers (cdr servers))))
312 (gnus-server-list-servers))
314 (defun gnus-server-copy-server (from to)
317 (or (gnus-server-server-name)
318 (error "No server on the current line"))
319 (read-string "Copy to: ")))
320 (or from (error "No server on current line"))
321 (or (and to (not (string= to ""))) (error "No name to copy to"))
322 (and (assoc to gnus-server-alist) (error "%s already exists" to))
323 (or (assoc from gnus-server-alist)
324 (error "%s: no such server" from))
325 (let ((to-entry (gnus-copy-sequence (assoc from gnus-server-alist))))
327 (setcar (nthcdr 2 to-entry) to)
328 (setq gnus-server-killed-servers
329 (cons to-entry gnus-server-killed-servers))
330 (gnus-server-yank-server)))
332 (defun gnus-server-add-server (how where)
334 (list (intern (completing-read "Server method: "
335 gnus-valid-select-methods nil t))
336 (read-string "Server name: ")))
337 (setq gnus-server-killed-servers
338 (cons (list where how where) gnus-server-killed-servers))
339 (gnus-server-yank-server))
341 (defun gnus-server-goto-server (server)
342 "Jump to a server line."
344 (list (completing-read "Goto server: " gnus-server-alist nil t)))
345 (let ((to (text-property-any (point-min) (point-max)
346 'gnus-server (intern server))))
350 (gnus-server-position-point)))))
352 (defun gnus-server-edit-server (server)
353 "Edit the server on the current line."
354 (interactive (list (gnus-server-server-name)))
356 (error "No server on current line"))
357 (let ((winconf (current-window-configuration)))
358 (get-buffer-create gnus-server-edit-buffer)
359 (gnus-configure-windows 'edit-server)
360 (gnus-add-current-to-buffer-list)
362 (make-local-variable 'gnus-prev-winconf)
363 (setq gnus-prev-winconf winconf)
364 (use-local-map (copy-keymap (current-local-map)))
365 (let ((done-func '(lambda ()
366 "Exit editing mode and update the information."
368 (gnus-server-edit-server-done 'group))))
369 (setcar (cdr (nth 4 done-func)) server)
370 (local-set-key "\C-c\C-c" done-func))
372 (insert ";; Type `C-c C-c' after you have edited the server.\n\n")
373 (insert (pp-to-string (cdr (assoc server gnus-server-alist))))))
375 (defun gnus-server-edit-server-done (server)
377 (set-buffer (get-buffer-create gnus-server-edit-buffer))
378 (goto-char (point-min))
379 (let ((form (read (current-buffer)))
380 (winconf gnus-prev-winconf))
381 (gnus-server-set-info server form)
382 (kill-buffer (current-buffer))
383 (and winconf (set-window-configuration winconf))
384 (set-buffer gnus-server-buffer)
385 (gnus-server-update-server (gnus-server-server-name))
386 (gnus-server-list-servers)
387 (gnus-server-position-point)))
389 (defun gnus-server-read-server (server)
391 (interactive (list (gnus-server-server-name)))
392 (let ((buf (current-buffer)))
394 (gnus-browse-foreign-server (gnus-server-to-method server) buf)
397 (gnus-server-update-server (gnus-server-server-name))
398 (gnus-server-position-point)))))
400 (defun gnus-server-pick-server (e)
403 (gnus-server-read-server (gnus-server-server-name)))
405 ;;; gnus-srvr.el ends here.