1 ;;; nneething.el --- random file access for Gnus
2 ;; Copyright (C) 1995 Free Software Foundation, Inc.
4 ;; Author: Lars Magne Ingebrigtsen <larsi@ifi.uio.no>
5 ;; Masanobu UMEDA <umerin@flab.flab.fujitsu.junet>
6 ;; Keywords: news, mail
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
22 ;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
26 ;; Based on nnspool.el by Masanobu UMEDA <umerin@flab.flab.fujitsu.junet>.
27 ;; For an overview of what the interface functions do, please see the
35 (defvar nneething-map-file-directory "~/.nneething/"
36 "*Map files directory.")
38 (defvar nneething-exclude-files "~$"
39 "*Regexp saying what files to exclude from the group.")
41 (defvar nneething-map-file ".nneething"
42 "*Name of map files.")
46 (defconst nneething-version "nneething 0.1"
49 (defvar nneething-current-directory nil
50 "Current news group directory.")
52 (defvar nneething-status-string "")
53 (defvar nneething-group-alist nil)
57 (defvar nneething-directory nil)
58 (defvar nneething-group nil)
59 (defvar nneething-map nil)
60 (defvar nneething-read-only nil)
61 (defvar nneething-active nil)
62 (defvar nneething-server-variables
64 (list 'nneething-directory nneething-directory)
65 '(nneething-current-directory nil)
66 '(nneething-status-string "")
67 '(nneething-group-alist)))
71 ;;; Interface functions.
73 (defun nneething-retrieve-headers (sequence &optional newsgroup server)
74 (nneething-possibly-change-directory newsgroup)
77 (set-buffer nntp-server-buffer)
79 (let* ((number (length sequence))
81 (large (and (numberp nnmail-large-newsgroup)
82 (> number nnmail-large-newsgroup)))
85 (if (stringp (car sequence))
89 (setq article (car sequence))
90 (setq file (nneething-file-name article))
92 (if (and (file-exists-p file)
93 (> (nth 7 (file-attributes file)) 0))
95 (insert (format "221 %d Article retrieved.\n" article))
96 (nneething-insert-head file)
99 (setq sequence (cdr sequence)
104 (message "nneething: Receiving headers... %d%%"
105 (/ (* count 100) number))))
107 (and large (message "nneething: Receiving headers...done"))
109 ;; Fold continuation lines.
110 (goto-char (point-min))
111 (while (re-search-forward "\\(\r?\n[ \t]+\\)+" nil t)
112 (replace-match " " t t))
115 (defun nneething-open-server (server &optional defs)
116 (setq nneething-status-string "")
117 (nnheader-init-server-buffer))
119 (defun nneething-close-server (&optional server)
122 (defun nneething-server-opened (&optional server)
125 (defun nneething-status-message (&optional server)
126 nneething-status-string)
128 (defun nneething-request-article (id &optional newsgroup server buffer)
129 (nneething-possibly-change-directory newsgroup)
130 (let ((file (if (stringp id) nil (nneething-file-name id)))
131 (nntp-server-buffer (or buffer nntp-server-buffer)))
132 (and (stringp file) ; We did not request by Message-ID.
133 (file-exists-p file) ; The file exists.
134 (not (file-directory-p file)) ; It's not a dir.
136 (nnmail-find-file file) ; Insert the file in the nntp buf.
137 (or (nnheader-article-p) ; Either it's a real article...
139 (goto-char (point-min))
140 (nneething-make-head file) ; ... or we fake some headers.
144 (defun nneething-request-group (group &optional dir dont-check)
145 (nneething-possibly-change-directory group dir)
146 (or dont-check (nneething-create-mapping))
148 (set-buffer nntp-server-buffer)
150 (if (> (car nneething-active) (cdr nneething-active))
151 (insert (format "211 0 1 0 %s\n" group))
152 (insert (format "211 %d %d %d %s\n"
153 (- (1+ (cdr nneething-active)) (car nneething-active))
154 (car nneething-active) (cdr nneething-active)
158 (defun nneething-request-list (&optional server dir)
160 (set-buffer nntp-server-buffer)
164 (defun nneething-request-newgroups (date &optional server)
166 (set-buffer nntp-server-buffer)
170 (defun nneething-request-post (&optional server)
171 (mail-send-and-exit nil))
173 (defalias 'nneething-request-post-buffer 'nnmail-request-post-buffer)
175 (defun nneething-close-group (group &optional server)
179 ;;; Internal functions.
181 (defun nneething-possibly-change-directory (group &optional dir)
184 (if (and nneething-group
185 (string= group nneething-group))
188 (if (setq entry (assoc group nneething-group-alist))
190 (setq nneething-group group)
191 (setq nneething-directory (nth 1 entry))
192 (setq nneething-map (nth 2 entry))
193 (setq nneething-active (nth 3 entry)))
194 (setq nneething-group group)
195 (setq nneething-directory dir)
196 (setq nneething-map nil)
197 (setq nneething-active (cons 1 0))
198 (nneething-create-mapping)
199 (setq nneething-group-alist
200 (cons (list group dir nneething-map nneething-active)
201 nneething-group-alist)))))))
203 (defun nneething-map-file ()
204 ;; We store it in a special directory under the user's home dir.
205 (concat (file-name-as-directory nneething-map-file-directory)
206 nneething-group nneething-map-file))
208 (defun nneething-create-mapping ()
209 ;; Read nneething-active and nneething-map
210 (let ((map-file (nneething-map-file))
211 (files (directory-files nneething-directory))
212 (dir (file-name-as-directory nneething-directory))
214 (if (file-exists-p map-file)
216 (load map-file nil t t)
218 (or nneething-active (setq nneething-active (cons 1 0)))
219 ;; Remove files matching that regexp.
223 (if (string-match nneething-exclude-files (car f))
224 (if prev (setcdr prev (cdr f))
225 (setq files (cdr files)))
228 ;; Remove files that have disappeared from the map.
229 (let ((map nneething-map)
232 (if (member (car (car map)) files)
236 (setcdr prev (cdr map))
237 (setq nneething-map (cdr nneething-map))))
238 (setq map (cdr map))))
239 ;; Find all new files and enter them into the map.
241 (or (assoc (car files) nneething-map) ; If already in the map, ignore.
244 (setcdr nneething-active (1+ (cdr nneething-active)))
246 (cons (cons (car files) (cdr nneething-active)) nneething-map))))
247 (setq files (cdr files)))
248 (if (or (not touched) nneething-read-only)
251 (set-buffer (get-buffer-create " *nneething map*"))
252 (buffer-disable-undo (current-buffer))
254 (insert "(setq nneething-map '" (prin1-to-string nneething-map) ")\n"
255 "(setq nneething-active '" (prin1-to-string nneething-active)
257 (write-region (point-min) (point-max) map-file nil 'nomesg)
258 (kill-buffer (current-buffer))))))
260 (defvar nneething-message-id-number 0)
261 (defvar nneething-work-buffer " *nneething work*")
263 (defun nneething-insert-head (file)
264 (and (nneething-get-head file)
265 (insert-buffer-substring nneething-work-buffer)))
267 (defun nneething-make-head (file)
268 (let ((atts (file-attributes file)))
269 (insert "Subject: " (file-name-nondirectory file) "\n"
270 "Message-ID: <nneething-"
272 (setq nneething-message-id-number
273 (1+ nneething-message-id-number)))
274 "@" (system-name) ">\n"
275 "Date: " (current-time-string (nth 5 atts)) "\n"
276 (nneething-from-line (nth 2 atts))
277 "Chars: " (int-to-string (nth 7 atts)) "\n")))
279 (defun nneething-from-line (uid)
280 (let ((login (condition-case nil
281 (user-login-name uid)
283 (cond ((= uid (user-uid)) (user-login-name))
285 (t (int-to-string uid))))))
286 (name (condition-case nil
289 (cond ((= uid (user-uid)) (user-full-name))
290 ((zerop uid) "Ms. Root"))))))
291 (concat "From: " login "@" (system-name)
292 (if name (concat " (" name ")") "") "\n")))
294 (defun nneething-get-head (file)
296 (set-buffer (get-buffer-create nneething-work-buffer))
297 (setq case-fold-search nil)
298 (buffer-disable-undo (current-buffer))
301 ((not (file-exists-p file))
302 ;; The file do not exist.
304 ((not (file-regular-p file))
305 ;; It's a dir, so we fudge a head.
306 (nneething-make-head file) t)
308 ;; We examine the file.
309 (nnheader-insert-head file)
310 (if (nnheader-article-p)
313 (goto-char (point-min))
314 (or (and (search-forward "\n\n" nil t)
319 (nneething-make-head file) t)))))
321 (defun nneething-number-to-file (number)
322 (car (rassq number nneething-map)))
324 (defun nneething-file-name (article)
325 (concat (file-name-as-directory nneething-directory)
326 (if (numberp article) (nneething-number-to-file article)
331 ;;; nneething.el ends here