lisp/gnus/nndir.el

   1 ;;; nndir.el --- single directory newsgroup access for Gnus
   2
   3 ;; Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000
   4 ;;      Free Software Foundation, Inc.
   5
   6 ;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
   7 ;; Keywords: news
   8
   9 ;; This file is part of GNU Emacs.
  10
  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 2, or (at your option)
  14 ;; any later version.
  15
  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.
  20
  21 ;; You should have received a copy of the GNU General Public License
  22 ;; along with GNU Emacs; see the file COPYING.  If not, write to the
  23 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  24 ;; Boston, MA 02111-1307, USA.
  25
  26 ;;; Commentary:
  27
  28 ;;; Code:
  29
  30 (require 'nnheader)
  31 (require 'nnmh)
  32 (require 'nnml)
  33 (require 'nnoo)
  34 (eval-when-compile (require 'cl))
  35
  36 (nnoo-declare nndir
  37   nnml nnmh)
  38
  39 (defvoo nndir-directory nil
  40   "Where nndir will look for groups."
  41   nnml-current-directory nnmh-current-directory)
  42
  43 (defvoo nndir-nov-is-evil nil
  44   "*Non-nil means that nndir will never retrieve NOV headers."
  45   nnml-nov-is-evil)
  46
  47 \f
  48
  49 (defvoo nndir-current-group "" nil nnml-current-group nnmh-current-group)
  50 (defvoo nndir-top-directory nil nil nnml-directory nnmh-directory)
  51 (defvoo nndir-get-new-mail nil nil nnml-get-new-mail nnmh-get-new-mail)
  52
  53 (defvoo nndir-status-string "" nil nnmh-status-string)
  54 (defconst nndir-version "nndir 1.0")
  55
  56 \f
  57
  58 ;;; Interface functions.
  59
  60 (nnoo-define-basics nndir)
  61
  62 (deffoo nndir-open-server (server &optional defs)
  63   (setq nndir-directory
  64         (or (cadr (assq 'nndir-directory defs))
  65             server))
  66   (unless (assq 'nndir-directory defs)
  67     (push `(nndir-directory ,server) defs))
  68   (push `(nndir-current-group
  69           ,(file-name-nondirectory (directory-file-name nndir-directory)))
  70         defs)
  71   (push `(nndir-top-directory
  72           ,(file-name-directory (directory-file-name nndir-directory)))
  73         defs)
  74   (nnoo-change-server 'nndir server defs)
  75   (let (err)
  76     (cond
  77      ((not (condition-case arg
  78                (file-exists-p nndir-directory)
  79              (ftp-error (setq err (format "%s" arg)))))
  80       (nndir-close-server)
  81       (nnheader-report
  82        'nndir (or err "No such file or directory: %s" nndir-directory)))
  83      ((not (file-directory-p (file-truename nndir-directory)))
  84       (nndir-close-server)
  85       (nnheader-report 'nndir "Not a directory: %s" nndir-directory))
  86      (t
  87       (nnheader-report 'nndir "Opened server %s using directory %s"
  88                        server nndir-directory)
  89       t))))
  90
  91 (nnoo-map-functions nndir
  92   (nnml-retrieve-headers 0 nndir-current-group 0 0)
  93   (nnml-request-article 0 nndir-current-group 0 0)
  94   (nnmh-request-group nndir-current-group 0 0)
  95   (nnml-close-group nndir-current-group 0)
  96   (nnml-request-list (nnoo-current-server 'nndir) nndir-directory)
  97   (nnml-request-newsgroups (nnoo-current-server 'nndir) nndir-directory))
  98
  99 (provide 'nndir)
 100
 101 ;;; nndir.el ends here