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, or (at your option)
  12 ;; 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; see the file COPYING.  If not, write to the
  21 ;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  22 ;; Boston, MA 02110-1301, USA.
  23
  24 ;;; Commentary:
  25
  26 ;; nnnil is a Gnus backend that provides no groups or articles.  It's useful
  27 ;; as a primary select method when you want all your real select methods to
  28 ;; be secondary or foreign.
  29
  30 ;;; Code:
  31
  32 (eval-and-compile
  33   (require 'nnheader))
  34
  35 (defvar nnnil-status-string "")
  36
  37 (defun nnnil-retrieve-headers (articles &optional group server fetch-old)
  38   (with-current-buffer nntp-server-buffer
  39     (erase-buffer))
  40   'nov)
  41
  42 (defun nnnil-open-server (server &optional definitions)
  43   t)
  44
  45 (defun nnnil-close-server (&optional server)
  46   t)
  47
  48 (defun nnnil-request-close ()
  49   t)
  50
  51 (defun nnnil-server-opened (&optional server)
  52   t)
  53
  54 (defun nnnil-status-message (&optional server)
  55   nnnil-status-string)
  56
  57 (defun nnnil-request-article (article &optional group server to-buffer)
  58   (setq nnnil-status-string "No such group")
  59   nil)
  60
  61 (defun nnnil-request-group (group &optional server fast)
  62   (let (deactivate-mark)
  63     (save-excursion
  64       (set-buffer nntp-server-buffer)
  65       (erase-buffer)
  66       (insert "411 no such news group\n")))
  67   (setq nnnil-status-string "No such group")
  68   nil)
  69
  70 (defun nnnil-close-group (group &optional server)
  71   t)
  72
  73 (defun nnnil-request-list (&optional server)
  74   (with-current-buffer nntp-server-buffer
  75     (erase-buffer))
  76   t)
  77
  78 (defun nnnil-request-post (&optional server)
  79   (setq nnnil-status-string "Read-only server")
  80   nil)
  81
  82 (provide 'nnnil)
  83
  84 ;; arch-tag: a982a1a3-bc5e-4fb1-a233-d7657a3e3257