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)
304 (gnus-server-mode))))
306 (defun gnus-server-prepare ()
307 (gnus-set-format 'server-mode)
308 (gnus-set-format 'server t)
309 (let ((alist gnus-server-alist)
310 (buffer-read-only nil)
313 (setq gnus-inserted-opened-servers nil)
314 ;; First we do the real list of servers.
316 (unless (member (cdar alist) done)
317 (push (cdar alist) done)
318 (setq server (pop alist))
319 (when (and server (car server) (cdr server))
320 (gnus-server-insert-server-line (car server) (cdr server))))
321 (when (member (cdar alist) done)
323 ;; Then we insert the list of servers that have been opened in
325 (dolist (open gnus-opened-servers)
326 (when (and (not (member (car open) done))
327 ;; Just ignore ephemeral servers.
328 (not (member (car open) gnus-ephemeral-servers)))
329 (push (car open) done)
330 (gnus-server-insert-server-line
331 (setq op-ser (format "%s:%s" (caar open) (nth 1 (car open))))
333 (push (list op-ser (car open)) gnus-inserted-opened-servers))))
334 (goto-char (point-min))
335 (gnus-server-position-point))
337 (defun gnus-server-server-name ()
338 (let ((server (get-text-property (point-at-bol) 'gnus-server)))
339 (and server (symbol-name server))))
341 (defun gnus-server-named-server ()
342 "Return a server name that matches one of the names returned by
343 `gnus-method-to-server'."
344 (let ((server (get-text-property (point-at-bol) 'gnus-named-server)))
345 (and server (symbol-name server))))
347 (defalias 'gnus-server-position-point 'gnus-goto-colon)
349 (defconst gnus-server-edit-buffer "*Gnus edit server*")
351 (defun gnus-server-update-server (server)
352 (with-current-buffer gnus-server-buffer
353 (let* ((buffer-read-only nil)
354 (entry (assoc server gnus-server-alist))
355 (oentry (assoc (gnus-server-to-method server)
356 gnus-opened-servers)))
359 (concat "(gnus-server-set-info \"" server "\" '"
360 (gnus-prin1-to-string (cdr entry)) ")\n")))
361 (when (or entry oentry)
362 ;; Buffer may be narrowed.
365 (when (gnus-server-goto-server server)
368 (gnus-server-insert-server-line (car entry) (cdr entry))
369 (gnus-server-insert-server-line
370 (format "%s:%s" (caar oentry) (nth 1 (car oentry)))
372 (gnus-server-position-point))))))
374 (defun gnus-server-set-info (server info)
375 ;; Enter a select method into the virtual server alist.
376 (when (and server info)
378 (concat "(gnus-server-set-info \"" server "\" '"
379 (gnus-prin1-to-string info) ")"))
380 (let* ((server (nth 1 info))
381 (entry (assoc server gnus-server-alist))
382 (cached (assoc server gnus-server-method-cache)))
384 (setq gnus-server-method-cache
385 (delq cached gnus-server-method-cache)))
388 ;; Remove the server from `gnus-opened-servers' since
389 ;; it has never been opened with the new `info' yet.
390 (gnus-opened-servers-remove (cdr entry))
391 ;; Don't make a new Lisp object.
392 (setcar (cdr entry) (car info))
393 (setcdr (cdr entry) (cdr info)))
394 (setq gnus-server-alist
395 (nconc gnus-server-alist (list (cons server info))))))))
397 ;;; Interactive server functions.
399 (defun gnus-server-kill-server (server)