1
0
mirror of https://git.savannah.gnu.org/git/emacs.git synced 2024-11-27 07:37:33 +00:00
emacs/lisp/gnus-srvr.el
Lars Magne Ingebrigtsen 526baa41c5 Initial revision
1996-06-25 22:35:26 +00:00

709 lines
22 KiB
EmacsLisp
Raw Blame History

This file contains invisible Unicode characters

This file contains invisible Unicode characters that are indistinguishable to humans but may be processed differently by a computer. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

;;; gnus-srvr.el --- virtual server support for Gnus
;; Copyright (C) 1995,96 Free Software Foundation, Inc.
;; Author: Lars Magne Ingebrigtsen <larsi@ifi.uio.no>
;; Keywords: news
;; This file is part of GNU Emacs.
;; GNU Emacs is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation; either version 2, or (at your option)
;; any later version.
;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs; see the file COPYING. If not, write to the
;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
;; Boston, MA 02111-1307, USA.
;;; Commentary:
;;; Code:
(require 'gnus)
(eval-when-compile (require 'cl))
(defvar gnus-server-mode-hook nil
"Hook run in `gnus-server-mode' buffers.")
(defconst gnus-server-line-format " {%(%h:%w%)} %s\n"
"Format of server lines.
It works along the same lines as a normal formatting string,
with some simple extensions.")
(defvar gnus-server-mode-line-format "Gnus List of servers"
"The format specification for the server mode line.")
(defvar gnus-server-exit-hook nil
"*Hook run when exiting the server buffer.")
;;; Internal variables.
(defvar gnus-inserted-opened-servers nil)
(defvar gnus-server-line-format-alist
`((?h how ?s)
(?n name ?s)
(?w where ?s)
(?s status ?s)))
(defvar gnus-server-mode-line-format-alist
`((?S news-server ?s)
(?M news-method ?s)
(?u user-defined ?s)))
(defvar gnus-server-line-format-spec nil)
(defvar gnus-server-mode-line-format-spec nil)
(defvar gnus-server-killed-servers nil)
(defvar gnus-server-mode-map)
(defvar gnus-server-menu-hook nil
"*Hook run after the creation of the server mode menu.")
(defun gnus-server-make-menu-bar ()
(gnus-visual-turn-off-edit-menu 'server)
(unless (boundp 'gnus-server-server-menu)
(easy-menu-define
gnus-server-server-menu gnus-server-mode-map ""
'("Server"
["Add" gnus-server-add-server t]
["Browse" gnus-server-read-server t]
["List" gnus-server-list-servers t]
["Kill" gnus-server-kill-server t]
["Yank" gnus-server-yank-server t]
["Copy" gnus-server-copy-server t]
["Edit" gnus-server-edit-server t]
["Exit" gnus-server-exit t]
))
(easy-menu-define
gnus-server-connections-menu gnus-server-mode-map ""
'("Connections"
["Open" gnus-server-open-server t]
["Close" gnus-server-close-server t]
["Deny" gnus-server-deny-server t]
["Reset" gnus-server-remove-denials t]
))
(run-hooks 'gnus-server-menu-hook)))
(defvar gnus-server-mode-map nil)
(put 'gnus-server-mode 'mode-class 'special)
(unless gnus-server-mode-map
(setq gnus-server-mode-map (make-sparse-keymap))
(suppress-keymap gnus-server-mode-map)
(gnus-define-keys
gnus-server-mode-map
" " gnus-server-read-server
"\r" gnus-server-read-server
gnus-mouse-2 gnus-server-pick-server
"q" gnus-server-exit
"l" gnus-server-list-servers
"k" gnus-server-kill-server
"y" gnus-server-yank-server
"c" gnus-server-copy-server
"a" gnus-server-add-server
"e" gnus-server-edit-server
"O" gnus-server-open-server
"C" gnus-server-close-server
"D" gnus-server-deny-server
"R" gnus-server-remove-denials
"\C-c\C-i" gnus-info-find-node))
(defun gnus-server-mode ()
"Major mode for listing and editing servers.
All normal editing commands are switched off.
\\<gnus-server-mode-map>
For more in-depth information on this mode, read the manual
(`\\[gnus-info-find-node]').
The following commands are available:
\\{gnus-server-mode-map}"
(interactive)
(when (and menu-bar-mode
(gnus-visual-p 'server-menu 'menu))
(gnus-server-make-menu-bar))
(kill-all-local-variables)
(gnus-simplify-mode-line)
(setq major-mode 'gnus-server-mode)
(setq mode-name "Server")
; (gnus-group-set-mode-line)
(setq mode-line-process nil)
(use-local-map gnus-server-mode-map)
(buffer-disable-undo (current-buffer))
(setq truncate-lines t)
(setq buffer-read-only t)
(run-hooks 'gnus-server-mode-hook))
(defun gnus-server-insert-server-line (name method)
(let* ((how (car method))
(where (nth 1 method))
(elem (assoc method gnus-opened-servers))
(status (cond ((eq (nth 1 elem) 'denied)
"(denied)")
((or (gnus-server-opened method)
(eq (nth 1 elem) 'ok))
"(opened)")
(t
"(closed)"))))
(beginning-of-line)
(gnus-add-text-properties
(point)
(prog1 (1+ (point))
;; Insert the text.
(eval gnus-server-line-format-spec))
(list 'gnus-server (intern name)))))
(defun gnus-enter-server-buffer ()
"Set up the server buffer."
(gnus-server-setup-buffer)
(gnus-configure-windows 'server)
(gnus-server-prepare))
(defun gnus-server-setup-buffer ()
"Initialize the server buffer."
(unless (get-buffer gnus-server-buffer)
(save-excursion
(set-buffer (get-buffer-create gnus-server-buffer))
(gnus-server-mode)
(when gnus-carpal
(gnus-carpal-setup-buffer 'server)))))
(defun gnus-server-prepare ()
(setq gnus-server-mode-line-format-spec
(gnus-parse-format gnus-server-mode-line-format
gnus-server-mode-line-format-alist))
(setq gnus-server-line-format-spec
(gnus-parse-format gnus-server-line-format
gnus-server-line-format-alist t))
(let ((alist gnus-server-alist)
(buffer-read-only nil)
(opened gnus-opened-servers)
done server op-ser)
(erase-buffer)
(setq gnus-inserted-opened-servers nil)
;; First we do the real list of servers.
(while alist
(push (cdr (setq server (pop alist))) done)
(when (and server (car server) (cdr server))
(gnus-server-insert-server-line (car server) (cdr server))))
;; Then we insert the list of servers that have been opened in
;; this session.
(while opened
(unless (member (caar opened) done)
(gnus-server-insert-server-line
(setq op-ser (format "%s:%s" (caaar opened) (nth 1 (caar opened))))
(caar opened))
(push (list op-ser (caar opened)) gnus-inserted-opened-servers))
(setq opened (cdr opened))))
(goto-char (point-min))
(gnus-server-position-point))
(defun gnus-server-server-name ()
(let ((server (get-text-property (gnus-point-at-bol) 'gnus-server)))
(and server (symbol-name server))))
(defalias 'gnus-server-position-point 'gnus-goto-colon)
(defconst gnus-server-edit-buffer "*Gnus edit server*")
(defun gnus-server-update-server (server)
(save-excursion
(set-buffer gnus-server-buffer)
(let* ((buffer-read-only nil)
(entry (assoc server gnus-server-alist))
(oentry (assoc (gnus-server-to-method server)
gnus-opened-servers)))
(when entry
(gnus-dribble-enter
(concat "(gnus-server-set-info \"" server "\" '"
(prin1-to-string (cdr entry)) ")")))
(when (or entry oentry)
;; Buffer may be narrowed.
(save-restriction
(widen)
(when (gnus-server-goto-server server)
(gnus-delete-line))
(if entry
(gnus-server-insert-server-line (car entry) (cdr entry))
(gnus-server-insert-server-line
(format "%s:%s" (caar oentry) (nth 1 (car oentry)))
(car oentry)))
(gnus-server-position-point))))))
(defun gnus-server-set-info (server info)
;; Enter a select method into the virtual server alist.
(when (and server info)
(gnus-dribble-enter
(concat "(gnus-server-set-info \"" server "\" '"
(prin1-to-string info) ")"))
(let* ((server (nth 1 info))
(entry (assoc server gnus-server-alist)))
(if entry (setcdr entry info)
(setq gnus-server-alist
(nconc gnus-server-alist (list (cons server info))))))))
;;; Interactive server functions.
(defun gnus-server-kill-server (server)
"Kill the server on the current line."
(interactive (list (gnus-server-server-name)))
(unless (gnus-server-goto-server server)
(if server (error "No such server: %s" server)
(error "No server on the current line")))
(unless (assoc server gnus-server-alist)
(error "Read-only server %s" server))
(gnus-dribble-enter "")
(let ((buffer-read-only nil))
(gnus-delete-line))
(setq gnus-server-killed-servers
(cons (assoc server gnus-server-alist) gnus-server-killed-servers))
(setq gnus-server-alist (delq (car gnus-server-killed-servers)
gnus-server-alist))
(gnus-server-position-point))
(defun gnus-server-yank-server ()
"Yank the previously killed server."
(interactive)
(or gnus-server-killed-servers
(error "No killed servers to be yanked"))
(let ((alist gnus-server-alist)
(server (gnus-server-server-name))
(killed (car gnus-server-killed-servers)))
(if (not server)
(setq gnus-server-alist (nconc gnus-server-alist (list killed)))
(if (string= server (caar gnus-server-alist))
(setq gnus-server-alist (cons killed gnus-server-alist))
(while (and (cdr alist)
(not (string= server (caadr alist))))
(setq alist (cdr alist)))
(if alist
(setcdr alist (cons killed (cdr alist)))
(setq gnus-server-alist (list killed)))))
(gnus-server-update-server (car killed))
(setq gnus-server-killed-servers (cdr gnus-server-killed-servers))
(gnus-server-position-point)))
(defun gnus-server-exit ()
"Return to the group buffer."
(interactive)
(kill-buffer (current-buffer))
(switch-to-buffer gnus-group-buffer)
(run-hooks 'gnus-server-exit-hook))
(defun gnus-server-list-servers ()
"List all available servers."
(interactive)
(let ((cur (gnus-server-server-name)))
(gnus-server-prepare)
(if cur (gnus-server-goto-server cur)
(goto-char (point-max))
(forward-line -1))
(gnus-server-position-point)))
(defun gnus-server-set-status (method status)
"Make METHOD have STATUS."
(let ((entry (assoc method gnus-opened-servers)))
(if entry
(setcar (cdr entry) status)
(push (list method status) gnus-opened-servers))))
(defun gnus-opened-servers-remove (method)
"Remove METHOD from the list of opened servers."
(setq gnus-opened-servers (delq (assoc method gnus-opened-servers)
gnus-opened-servers)))
(defun gnus-server-open-server (server)
"Force an open of SERVER."
(interactive (list (gnus-server-server-name)))
(let ((method (gnus-server-to-method server)))
(or method (error "No such server: %s" server))
(gnus-server-set-status method 'ok)
(prog1
(or (gnus-open-server method)
(progn (message "Couldn't open %s" server) nil))
(gnus-server-update-server server)
(gnus-server-position-point))))
(defun gnus-server-close-server (server)
"Close SERVER."
(interactive (list (gnus-server-server-name)))
(let ((method (gnus-server-to-method server)))
(or method (error "No such server: %s" server))
(gnus-server-set-status method 'closed)
(prog1
(gnus-close-server method)
(gnus-server-update-server server)
(gnus-server-position-point))))
(defun gnus-server-deny-server (server)
"Make sure SERVER will never be attempted opened."
(interactive (list (gnus-server-server-name)))
(let ((method (gnus-server-to-method server)))
(or method (error "No such server: %s" server))
(gnus-server-set-status method 'denied))
(gnus-server-update-server server)
(gnus-server-position-point)
t)
(defun gnus-server-remove-denials ()
"Make all denied servers into closed servers."
(interactive)
(let ((servers gnus-opened-servers))
(while servers
(when (eq (nth 1 (car servers)) 'denied)
(setcar (nthcdr 1 (car servers)) 'closed))
(setq servers (cdr servers))))
(gnus-server-list-servers))
(defun gnus-server-copy-server (from to)
(interactive
(list
(or (gnus-server-server-name)
(error "No server on the current line"))
(read-string "Copy to: ")))
(or from (error "No server on current line"))
(or (and to (not (string= to ""))) (error "No name to copy to"))
(and (assoc to gnus-server-alist) (error "%s already exists" to))
(or (assoc from gnus-server-alist)
(error "%s: no such server" from))
(let ((to-entry (gnus-copy-sequence (assoc from gnus-server-alist))))
(setcar to-entry to)
(setcar (nthcdr 2 to-entry) to)
(setq gnus-server-killed-servers
(cons to-entry gnus-server-killed-servers))
(gnus-server-yank-server)))
(defun gnus-server-add-server (how where)
(interactive
(list (intern (completing-read "Server method: "
gnus-valid-select-methods nil t))
(read-string "Server name: ")))
(setq gnus-server-killed-servers
(cons (list where how where) gnus-server-killed-servers))
(gnus-server-yank-server))
(defun gnus-server-goto-server (server)
"Jump to a server line."
(interactive
(list (completing-read "Goto server: " gnus-server-alist nil t)))
(let ((to (text-property-any (point-min) (point-max)
'gnus-server (intern server))))
(and to
(progn
(goto-char to)
(gnus-server-position-point)))))
(defun gnus-server-edit-server (server)
"Edit the server on the current line."
(interactive (list (gnus-server-server-name)))
(unless server
(error "No server on current line"))
(unless (assoc server gnus-server-alist)
(error "This server can't be edited"))
(let ((winconf (current-window-configuration))
(info (cdr (assoc server gnus-server-alist))))
(gnus-close-server info)
(get-buffer-create gnus-server-edit-buffer)
(gnus-configure-windows 'edit-server)
(gnus-add-current-to-buffer-list)
(emacs-lisp-mode)
(make-local-variable 'gnus-prev-winconf)
(setq gnus-prev-winconf winconf)
(use-local-map (copy-keymap (current-local-map)))
(let ((done-func '(lambda ()
"Exit editing mode and update the information."
(interactive)
(gnus-server-edit-server-done 'group))))
(setcar (cdr (nth 4 done-func)) server)
(local-set-key "\C-c\C-c" done-func))
(erase-buffer)
(insert ";; Type `C-c C-c' after you have edited the server.\n\n")
(insert (pp-to-string info))))
(defun gnus-server-edit-server-done (server)
(interactive)
(set-buffer (get-buffer-create gnus-server-edit-buffer))
(goto-char (point-min))
(let ((form (read (current-buffer)))
(winconf gnus-prev-winconf))
(gnus-server-set-info server form)
(kill-buffer (current-buffer))
(and winconf (set-window-configuration winconf))
(set-buffer gnus-server-buffer)
(gnus-server-update-server server)
(gnus-server-list-servers)
(gnus-server-position-point)))
(defun gnus-server-read-server (server)
"Browse a server."
(interactive (list (gnus-server-server-name)))
(let ((buf (current-buffer)))
(prog1
(gnus-browse-foreign-server (gnus-server-to-method server) buf)
(save-excursion
(set-buffer buf)
(gnus-server-update-server (gnus-server-server-name))
(gnus-server-position-point)))))
(defun gnus-server-pick-server (e)
(interactive "e")
(mouse-set-point e)
(gnus-server-read-server (gnus-server-server-name)))
;;;
;;; Browse Server Mode
;;;
(defvar gnus-browse-menu-hook nil
"*Hook run after the creation of the browse mode menu.")
(defvar gnus-browse-mode-hook nil)
(defvar gnus-browse-mode-map nil)
(put 'gnus-browse-mode 'mode-class 'special)
(unless gnus-browse-mode-map
(setq gnus-browse-mode-map (make-keymap))
(suppress-keymap gnus-browse-mode-map)
(gnus-define-keys
gnus-browse-mode-map
" " gnus-browse-read-group
"=" gnus-browse-select-group
"n" gnus-browse-next-group
"p" gnus-browse-prev-group
"\177" gnus-browse-prev-group
"N" gnus-browse-next-group
"P" gnus-browse-prev-group
"\M-n" gnus-browse-next-group
"\M-p" gnus-browse-prev-group
"\r" gnus-browse-select-group
"u" gnus-browse-unsubscribe-current-group
"l" gnus-browse-exit
"L" gnus-browse-exit
"q" gnus-browse-exit
"Q" gnus-browse-exit
"\C-c\C-c" gnus-browse-exit
"?" gnus-browse-describe-briefly
"\C-c\C-i" gnus-info-find-node))
(defun gnus-browse-make-menu-bar ()
(gnus-visual-turn-off-edit-menu 'browse)
(or
(boundp 'gnus-browse-menu)
(progn
(easy-menu-define
gnus-browse-menu gnus-browse-mode-map ""
'("Browse"
["Subscribe" gnus-browse-unsubscribe-current-group t]
["Read" gnus-browse-read-group t]
["Select" gnus-browse-read-group t]
["Next" gnus-browse-next-group t]
["Prev" gnus-browse-next-group t]
["Exit" gnus-browse-exit t]
))
(run-hooks 'gnus-browse-menu-hook))))
(defvar gnus-browse-current-method nil)
(defvar gnus-browse-return-buffer nil)
(defvar gnus-browse-buffer "*Gnus Browse Server*")
(defun gnus-browse-foreign-server (method &optional return-buffer)
"Browse the server METHOD."
(setq gnus-browse-current-method method)
(setq gnus-browse-return-buffer return-buffer)
(let ((gnus-select-method method)
groups group)
(gnus-message 5 "Connecting to %s..." (nth 1 method))
(cond
((not (gnus-check-server method))
(gnus-message
1 "Unable to contact server: %s" (gnus-status-message method))
nil)
((not (gnus-request-list method))
(gnus-message
1 "Couldn't request list: %s" (gnus-status-message method))
nil)
(t
(get-buffer-create gnus-browse-buffer)
(gnus-add-current-to-buffer-list)
(and gnus-carpal (gnus-carpal-setup-buffer 'browse))
(gnus-configure-windows 'browse)
(buffer-disable-undo (current-buffer))
(let ((buffer-read-only nil))
(erase-buffer))
(gnus-browse-mode)
(setq mode-line-buffer-identification
(list
(format
"Gnus: %%b {%s:%s}" (car method) (cadr method))))
(save-excursion
(set-buffer nntp-server-buffer)
(let ((cur (current-buffer)))
(goto-char (point-min))
(or (string= gnus-ignored-newsgroups "")
(delete-matching-lines gnus-ignored-newsgroups))
(while (re-search-forward
"\\(^[^ \t]+\\)[ \t]+[0-9]+[ \t]+[0-9]+" nil t)
(goto-char (match-end 1))
(setq groups (cons (cons (match-string 1)
(max 0 (- (1+ (read cur)) (read cur))))
groups)))))
(setq groups (sort groups
(lambda (l1 l2)
(string< (car l1) (car l2)))))
(let ((buffer-read-only nil))
(while groups
(setq group (car groups))
(insert
(format "K%7d: %s\n" (cdr group) (car group)))
(setq groups (cdr groups))))
(switch-to-buffer (current-buffer))
(goto-char (point-min))
(gnus-group-position-point)
(gnus-message 5 "Connecting to %s...done" (nth 1 method))
t))))
(defun gnus-browse-mode ()
"Major mode for browsing a foreign server.
All normal editing commands are switched off.
\\<gnus-browse-mode-map>
The only things you can do in this buffer is
1) `\\[gnus-browse-unsubscribe-current-group]' to subscribe to a group.
The group will be inserted into the group buffer upon exit from this
buffer.
2) `\\[gnus-browse-read-group]' to read a group ephemerally.
3) `\\[gnus-browse-exit]' to return to the group buffer."
(interactive)
(kill-all-local-variables)
(when (and menu-bar-mode
(gnus-visual-p 'browse-menu 'menu))
(gnus-browse-make-menu-bar))
(gnus-simplify-mode-line)
(setq major-mode 'gnus-browse-mode)
(setq mode-name "Browse Server")
(setq mode-line-process nil)
(use-local-map gnus-browse-mode-map)
(buffer-disable-undo (current-buffer))
(setq truncate-lines t)
(setq buffer-read-only t)
(run-hooks 'gnus-browse-mode-hook))
(defun gnus-browse-read-group (&optional no-article)
"Enter the group at the current line."
(interactive)
(let ((group (gnus-browse-group-name)))
(or (gnus-group-read-ephemeral-group
group gnus-browse-current-method nil
(cons (current-buffer) 'browse))
(error "Couldn't enter %s" group))))
(defun gnus-browse-select-group ()
"Select the current group."
(interactive)
(gnus-browse-read-group 'no))
(defun gnus-browse-next-group (n)
"Go to the next group."
(interactive "p")
(prog1
(forward-line n)
(gnus-group-position-point)))
(defun gnus-browse-prev-group (n)
"Go to the next group."
(interactive "p")
(gnus-browse-next-group (- n)))
(defun gnus-browse-unsubscribe-current-group (arg)
"(Un)subscribe to the next ARG groups."
(interactive "p")
(when (eobp)
(error "No group at current line."))
(let ((ward (if (< arg 0) -1 1))
(arg (abs arg)))
(while (and (> arg 0)
(not (eobp))
(gnus-browse-unsubscribe-group)
(zerop (gnus-browse-next-group ward)))
(decf arg))
(gnus-group-position-point)
(if (/= 0 arg) (gnus-message 7 "No more newsgroups"))
arg))
(defun gnus-browse-group-name ()
(save-excursion
(beginning-of-line)
(when (re-search-forward ": \\(.*\\)$" (gnus-point-at-eol) t)
(gnus-group-prefixed-name (match-string 1) gnus-browse-current-method))))
(defun gnus-browse-unsubscribe-group ()
"Toggle subscription of the current group in the browse buffer."
(let ((sub nil)
(buffer-read-only nil)
group)
(save-excursion
(beginning-of-line)
;; If this group it killed, then we want to subscribe it.
(if (= (following-char) ?K) (setq sub t))
(setq group (gnus-browse-group-name))
(delete-char 1)
(if sub
(progn
(gnus-group-change-level
(list t group gnus-level-default-subscribed
nil nil gnus-browse-current-method)
gnus-level-default-subscribed gnus-level-killed
(and (car (nth 1 gnus-newsrc-alist))
(gnus-gethash (car (nth 1 gnus-newsrc-alist))
gnus-newsrc-hashtb))
t)
(insert ? ))
(gnus-group-change-level
group gnus-level-killed gnus-level-default-subscribed)
(insert ?K)))
t))
(defun gnus-browse-exit ()
"Quit browsing and return to the group buffer."
(interactive)
(when (eq major-mode 'gnus-browse-mode)
(kill-buffer (current-buffer)))
;; Insert the newly subscribed groups in the group buffer.
(save-excursion
(set-buffer gnus-group-buffer)
(gnus-group-list-groups nil))
(if gnus-browse-return-buffer
(gnus-configure-windows 'server 'force)
(gnus-configure-windows 'group 'force)))
(defun gnus-browse-describe-briefly ()
"Give a one line description of the group mode commands."
(interactive)
(gnus-message 6
(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")))
(provide 'gnus-srvr)
;;; gnus-srvr.el ends here.