lisp/gnus/nnnil.el

   1 ;;; nnnil.el --- empty backend for Gnus
   2
   3 ;; This file is in the public domain.
   4
   5 ;; Author: Paul Jarc <prj@po.cwru.edu>
   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 3 of the License, or
  12 ;; (at your option) 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.  If not, see <http://www.gnu.org/licenses/>.
  21
  22 ;;; Commentary:
  23
  24 ;; nnnil is a Gnus backend that provides no groups or articles.  It's useful
  25 ;; as a primary select method when you want all your real select methods to
  26 ;; be secondary or foreign.
  27
  28 ;;; Code:
  29
  30 (eval-and-compile
  31   (require 'nnheader))
  32
  33 (defvar nnnil-status-string "")
  34
  35 (defun nnnil-retrieve-headers (articles &optional group server fetch-old)
  36   (with-current-buffer nntp-server-buffer
  37     (erase-buffer))
  38   'nov)
  39
  40 (defun nnnil-open-server (server &optional definitions)
  41   t)
  42
  43 (defun nnnil-close-server (&optional server)
  44   t)
  45
  46 (defun nnnil-request-close ()
  47   t)
  48
  49 (defun nnnil-server-opened (&optional server)
  50   t)
  51
  52 (defun nnnil-status-message (&optional server)
  53   nnnil-status-string)
  54
  55 (defun nnnil-request-article (article &optional group server to-buffer)
  56   (setq nnnil-status-string "No such group")
  57   nil)
  58
  59 (defun nnnil-request-group (group &optional server fast info)
  60   (let (deactivate-mark)
  61     (with-current-buffer nntp-server-buffer
  62       (erase-buffer)
  63       (insert "411 no such news group\n")))
  64   (setq nnnil-status-string "No such group")
  65   nil)
  66
  67 (defun nnnil-close-group (group &optional server)
  68   t)
  69
  70 (defun nnnil-request-list (&optional server)
  71   (with-current-buffer nntp-server-buffer
  72     (erase-buffer))
  73   t)
  74
  75 (defun nnnil-request-post (&optional server)
  76   (setq nnnil-status-string "Read-only server")
  77   nil)
  78
  79 (provide 'nnnil)
  80
  81 ;;; nnnil.el ends here