1 ;;; gnus-srvr.el --- virtual server support for Gnus
2 ;; Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001
3 ;; Free Software Foundation, Inc.
5 ;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
8 ;; This file is part of GNU Emacs.
10 ;; GNU Emacs is free software; you can redistribute it and/or modify
11 ;; it under the terms of the GNU General Public License as published by
12 ;; the Free Software Foundation; either version 2, or (at your option)
15 ;; GNU Emacs is distributed in the hope that it will be useful,
16 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 ;; GNU General Public License for more details.
20 ;; You should have received a copy of the GNU General Public License
21 ;; along with GNU Emacs; see the file COPYING. If not, write to the
22 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
23 ;; Boston, MA 02111-1307, USA.
29 (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:
59 :group 'gnus-server-visual
62 (defcustom gnus-server-mode-line-format "Gnus: %%b"
63 "The format specification for the server mode line."
64 :group 'gnus-server-visual
67 (defcustom gnus-server-browse-in-group-buffer nil
68 "Whether browse server in group buffer."
69 :group 'gnus-server-visual
72 ;;; Internal variables.
74 (defvar gnus-inserted-opened-servers nil)
76 (defvar gnus-server-line-format-alist
77 `((?h gnus-tmp-how ?s)
79 (?w gnus-tmp-where ?s)
80 (?s gnus-tmp-status ?s)
81 (?a gnus-tmp-agent ?s)))
83 (defvar gnus-server-mode-line-format-alist
84 `((?S gnus-tmp-news-server ?s)
85 (?M gnus-tmp-news-method ?s)
86 (?u gnus-tmp-user-defined ?s)))
88 (defvar gnus-server-line-format-spec nil)
89 (defvar gnus-server-mode-line-format-spec nil)
90 (defvar gnus-server-killed-servers nil)
92 (defvar gnus-server-mode-map)
94 (defvar gnus-server-menu-hook nil
95 "*Hook run after the creation of the server mode menu.")
97 (defun gnus-server-make-menu-bar ()
98 (gnus-turn-off-edit-menu 'server)
99 (unless (boundp 'gnus-server-server-menu)
101 gnus-server-server-menu gnus-server-mode-map ""
103 ["Add" gnus-server-add-server t]
104 ["Browse" gnus-server-read-server t]
105 ["Scan" gnus-server-scan-server t]
106 ["List" gnus-server-list-servers t]
107 ["Kill" gnus-server-kill-server t]
108 ["Yank" gnus-server-yank-server t]
109 ["Copy" gnus-server-copy-server t]
110 ["Edit" gnus-server-edit-server t]
111 ["Regenerate" gnus-server-regenerate-server t]
112 ["Exit" gnus-server-exit t]))
115 gnus-server-connections-menu gnus-server-mode-map ""
117 ["Open" gnus-server-open-server t]
118 ["Close" gnus-server-close-server t]
119 ["Deny" gnus-server-deny-server t]
121 ["Open All" gnus-server-open-all-servers t]
122 ["Close All" gnus-server-close-all-servers t]
123 ["Reset All" gnus-server-remove-denials t]))
125 (gnus-run-hooks 'gnus-server-menu-hook)))
127 (defvar gnus-server-mode-map nil)
128 (put 'gnus-server-mode 'mode-class 'special)
130 (unless gnus-server-mode-map
131 (setq gnus-server-mode-map (make-sparse-keymap))
132 (suppress-keymap gnus-server-mode-map)
134 (gnus-define-keys gnus-server-mode-map
135 " " gnus-server-read-server-in-server-buffer
136 "\r" gnus-server-read-server
137 gnus-mouse-2 gnus-server-pick-server
139 "l" gnus-server-list-servers
140 "k" gnus-server-kill-server
141 "y" gnus-server-yank-server
142 "c" gnus-server-copy-server
143 "a" gnus-server-add-server
144 "e" gnus-server-edit-server
145 "s" gnus-server-scan-server
147 "O" gnus-server-open-server
148 "\M-o" gnus-server-open-all-servers
149 "C" gnus-server-close-server
150 "\M-c" gnus-server-close-all-servers
151 "D" gnus-server-deny-server
152 "R" gnus-server-remove-denials
157 "g" gnus-server-regenerate-server
159 "\C-c\C-i" gnus-info-find-node
160 "\C-c\C-b" gnus-bug))
162 (defface gnus-server-agent-face
163 '((((class color) (background light)) (:foreground "PaleTurquoise" :bold t))
164 (((class color) (background dark)) (:foreground "PaleTurquoise" :bold t))
166 "Face used for displaying AGENTIZED servers"
167 :group 'gnus-server-visual)
169 (defface gnus-server-opened-face
170 '((((class color) (background light)) (:foreground "Green3" :bold t))
171 (((class color) (background dark)) (:foreground "Green1" :bold t))
173 "Face used for displaying OPENED servers"
174 :group 'gnus-server-visual)
176 (defface gnus-server-closed-face
177 '((((class color) (background light)) (:foreground "Steel Blue" :italic t))
178 (((class color) (background dark))
179 (:foreground "Light Steel Blue" :italic t))
181 "Face used for displaying CLOSED servers"
182 :group 'gnus-server-visual)
184 (defface gnus-server-denied-face
185 '((((class color) (background light)) (:foreground "Red" :bold t))
186 (((class color) (background dark)) (:foreground "Pink" :bold t))
187 (t (:inverse-video t :bold t)))
188 "Face used for displaying DENIED servers"
189 :group 'gnus-server-visual)
191 (defcustom gnus-server-agent-face 'gnus-server-agent-face
192 "Face name to use on AGENTIZED servers."
193 :group 'gnus-server-visual
196 (defcustom gnus-server-opened-face 'gnus-server-opened-face
197 "Face name to use on OPENED servers."
198 :group 'gnus-server-visual
201 (defcustom gnus-server-closed-face 'gnus-server-closed-face
202 "Face name to use on CLOSED servers."
203 :group 'gnus-server-visual
206 (defcustom gnus-server-denied-face 'gnus-server-denied-face
207 "Face name to use on DENIED servers."
208 :group 'gnus-server-visual
211 (defvar gnus-server-font-lock-keywords
213 '("(\\(agent\\))" 1 gnus-server-agent-face)
214 '("(\\(opened\\))" 1 gnus-server-opened-face)
215 '("(\\(closed\\))" 1 gnus-server-closed-face)
216 '("(\\(denied\\))" 1 gnus-server-denied-face)))
218 (defun gnus-server-mode ()
219 "Major mode for listing and editing servers.
221 All normal editing commands are switched off.
222 \\<gnus-server-mode-map>
223 For more in-depth information on this mode, read the manual
224 \(`\\[gnus-info-find-node]').
226 The following commands are available:
228 \\{gnus-server-mode-map}"
230 (when (gnus-visual-p 'server-menu 'menu)
231 (gnus-server-make-menu-bar))
232 (kill-all-local-variables)
233 (gnus-simplify-mode-line)
234 (setq major-mode 'gnus-server-mode)
235 (setq mode-name "Server")
236 (gnus-set-default-directory)
237 (setq mode-line-process nil)
238 (use-local-map gnus-server-mode-map)
239 (buffer-disable-undo)
240 (setq truncate-lines t)
241 (setq buffer-read-only t)
242 (if (featurep 'xemacs)
243 (put 'gnus-server-mode 'font-lock-defaults '(gnus-server-font-lock-keywords t))
244 (set (make-local-variable 'font-lock-defaults)
245 '(gnus-server-font-lock-keywords t)))
246 (gnus-run-hooks 'gnus-server-mode-hook))
248 (defun gnus-server-insert-server-line (gnus-tmp-name method)
249 (let* ((gnus-tmp-how (car method))
250 (gnus-tmp-where (nth 1 method))
251 (elem (assoc method gnus-opened-servers))
253 (if (eq (nth 1 elem) 'denied)
256 (if (or (gnus-server-opened method)
257 (eq (nth 1 elem) 'ok))
260 ((error) "(error)"))))
261 (gnus-tmp-agent (if (and gnus-agent
263 gnus-agent-covered-methods))
267 (gnus-add-text-properties
271 (eval gnus-server-line-format-spec))
272 (list 'gnus-server (intern gnus-tmp-name)))))
274 (defun gnus-enter-server-buffer ()
275 "Set up the server buffer."
276 (gnus-server-setup-buffer)
277 (gnus-configure-windows 'server)
278 (gnus-server-prepare))
280 (defun gnus-server-setup-buffer ()
281 "Initialize the server buffer."
282 (unless (get-buffer gnus-server-buffer)
284 (set-buffer (gnus-get-buffer-create gnus-server-buffer))
287 (gnus-carpal-setup-buffer 'server)))))
289 (defun gnus-server-prepare ()
290 (gnus-set-format 'server-mode)
291 (gnus-set-format 'server t)
292 (let ((alist gnus-server-alist)
293 (buffer-read-only nil)
294 (opened gnus-opened-servers)
297 (setq gnus-inserted-opened-servers nil)
298 ;; First we do the real list of servers.
300 (unless (member (cdar alist) done)
301 (push (cdar alist) done)
302 (cdr (setq server (pop alist)))
303 (when (and server (car server) (cdr server))
304 (gnus-server-insert-server-line (car server) (cdr server))))
305 (when (member (cdar alist) done)
307 ;; Then we insert the list of servers that have been opened in
310 (when (and (not (member (caar opened) done))
311 ;; Just ignore ephemeral servers.
312 (not (member (caar opened) gnus-ephemeral-servers)))
313 (push (caar opened) done)
314 (gnus-server-insert-server-line
315 (setq op-ser (format "%s:%s" (caaar opened) (nth 1 (caar opened))))
317 (push (list op-ser (caar opened)) gnus-inserted-opened-servers))
318 (setq opened (cdr opened))))
319 (goto-char (point-min))
320 (gnus-server-position-point))
322 (defun gnus-server-server-name ()
323 (let ((server (get-text-property (gnus-point-at-bol) 'gnus-server)))
324 (and server (symbol-name server))))
326 (defalias 'gnus-server-position-point 'gnus-goto-colon)
328 (defconst gnus-server-edit-buffer "*Gnus edit server*")
330 (defun gnus-server-update-server (server)
332 (set-buffer gnus-server-buffer)
333 (let* ((buffer-read-only nil)
334 (entry (assoc server gnus-server-alist))
335 (oentry (assoc (gnus-server-to-method server)
336 gnus-opened-servers)))
339 (concat "(gnus-server-set-info \"" server "\" '"
340 (prin1-to-string (cdr entry)) ")\n")))
341 (when (or entry oentry)
342 ;; Buffer may be narrowed.
345 (when (gnus-server-goto-server server)
348 (gnus-server-insert-server-line (car entry) (cdr entry))
349 (gnus-server-insert-server-line
350 (format "%s:%s" (caar oentry) (nth 1 (car oentry)))
352 (gnus-server-position-point))))))
354 (defun gnus-server-set-info (server info)
355 ;; Enter a select method into the virtual server alist.
356 (when (and server info)
358 (concat "(gnus-server-set-info \"" server "\" '"
359 (prin1-to-string info) ")"))
360 (let* ((server (nth 1 info))
361 (entry (assoc server gnus-server-alist)))
362 (if entry (setcdr entry info)
363 (setq gnus-server-alist
364 (nconc gnus-server-alist (list (cons server info))))))))
366 ;;; Interactive server functions.
368 (defun gnus-server-kill-server (server)
369 "Kill the server on the current line."
370 (interactive (list (gnus-server-server-name)))
371 (unless (gnus-server-goto-server server)
372 (if server (error "No such server: %s" server)
373 (error "No server on the current line")))
374 (unless (assoc server gnus-server-alist)
375 (error "Read-only server %s" server))
377 (let ((buffer-read-only nil))
379 (push (assoc server gnus-server-alist) gnus-server-killed-servers)
380 (setq gnus-server-alist (delq (car gnus-server-killed-servers)
382 (let ((groups (gnus-groups-from-server server)))
385 (format "Kill all %s groups from this server? "
387 (dolist (group groups)
388 (setq gnus-newsrc-alist
389 (delq (assoc group gnus-newsrc-alist)
391 (when gnus-group-change-level-function
392 (funcall gnus-group-change-level-function
393 group gnus-level-killed 3)))))
394 (gnus-server-position-point))
396 (defun gnus-server-yank-server ()
397 "Yank the previously killed server."
399 (unless gnus-server-killed-servers
400 (error "No killed servers to be yanked"))
401 (let ((alist gnus-server-alist)
402 (server (gnus-server-server-name))
403 (killed (car gnus-server-killed-servers)))
405 (setq gnus-server-alist (nconc gnus-server-alist (list killed)))
406 (if (string= server (caar gnus-server-alist))
407 (push killed gnus-server-alist)
408 (while (and (cdr alist)
409 (not (string= server (caadr alist))))
410 (setq alist (cdr alist)))
412 (setcdr alist (cons killed (cdr alist)))
413 (setq gnus-server-alist (list killed)))))
414 (gnus-server-update-server (car killed))
415 (setq gnus-server-killed-servers (cdr gnus-server-killed-servers))
416 (gnus-server-position-point)))
418 (defun gnus-server-exit ()
419 "Return to the group buffer."
421 (gnus-run-hooks 'gnus-server-exit-hook)
422 (kill-buffer (current-buffer))
423 (gnus-configure-windows 'group t))
425 (defun gnus-server-list-servers ()
426 "List all available servers."
428 (let ((cur (gnus-server-server-name)))
429 (gnus-server-prepare)
430 (if cur (gnus-server-goto-server cur)
431 (goto-char (point-max))