1 ;;; nneething.el --- random file access for Gnus
3 ;; Copyright (C) 1995 Free Software Foundation, Inc.
5 ;; Author: Lars Magne Ingebrigtsen <larsi@ifi.uio.no>
6 ;; Masanobu UMEDA <umerin@flab.flab.fujitsu.junet>
7 ;; Keywords: news, mail
9 ;; This file is part of GNU Emacs.
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)
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.
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.
28 ;; Based on nnspool.el by Masanobu UMEDA <umerin@flab.flab.fujitsu.junet>.
29 ;; For an overview of what the interface functions do, please see the
37 (defvar nneething-map-file-directory "~/.nneething/"
38 "*Map files directory.")
40 (defvar nneething-exclude-files "~$"
41 "*Regexp saying what files to exclude from the group.")
43 (defvar nneething-map-file ".nneething"
44 "*Name of map files.")
48 (defconst nneething-version "nneething 1.0"
51 (defvar nneething-current-directory nil
52 "Current news group directory.")
54 (defvar nneething-status-string "")
55 (defvar nneething-group-alist nil)
59 (defvar nneething-directory nil)
60 (defvar nneething-group nil)
61 (defvar nneething-map nil)
62 (defvar nneething-read-only nil)
63 (defvar nneething-active nil)
64 (defvar nneething-server-variables
66 (list 'nneething-directory nneething-directory)
67 '(nneething-current-directory nil)
68 '(nneething-status-string "")
69 '(nneething-group-alist)))
73 ;;; Interface functions.
75 (defun nneething-retrieve-headers (sequence &optional newsgroup server)
76 (nneething-possibly-change-directory newsgroup)
79 (set-buffer nntp-server-buffer)
81 (let* ((number (length sequence))
83 (large (and (numberp nnmail-large-newsgroup)
84 (> number nnmail-large-newsgroup)))
87 (if (stringp (car sequence))
91 (setq article (car sequence))
92 (setq file (nneething-file-name article))
94 (if (and (file-exists-p file)
95 (not (zerop (nth 7 (file-attributes file)))))
97 (insert (format "221 %d Article retrieved.\n" article))
98 (nneething-insert-head file)
101 (setq sequence (cdr sequence)
106 (message "nneething: Receiving headers... %d%%"
107 (/ (* count 100) number))))
109 (and large (message "nneething: Receiving headers...done"))
111 ;; Fold continuation lines.
112 (goto-char (point-min))
113 (while (re-search-forward "\\(\r?\n[ \t]+\\)+" nil t)
114 (replace-match " " t t))
117 (defun nneething-open-server (server &optional defs)
118 (setq nneething-status-string "")
119 (nnheader-init-server-buffer))
121 (defun nneething-close-server (&optional server)
124 (defun nneething-server-opened (&optional server)
127 (defun nneething-status-message (&optional server)
128 nneething-status-string)
130 (defun nneething-request-article (id &optional newsgroup server buffer)
131 (nneething-possibly-change-directory newsgroup)
132 (let ((file (if (stringp id) nil (nneething-file-name id)))
133 (nntp-server-buffer (or buffer nntp-server-buffer)))
134 (and (stringp file) ; We did not request by Message-ID.
135 (file-exists-p file) ; The file exists.
136 (not (file-directory-p file)) ; It's not a dir.
138 (nnmail-find-file file) ; Insert the file in the nntp buf.
139 (or (nnheader-article-p) ; Either it's a real article...
141 (goto-char (point-min))
142 (nneething-make-head file) ; ... or we fake some headers.
146 (defun nneething-request-group (group &optional dir dont-check)
147 (nneething-possibly-change-directory group dir)
148 (or dont-check (nneething-create-mapping))
150 (set-buffer nntp-server-buffer)
152 (if (> (car nneething-active) (cdr nneething-active))
153 (insert (format "211 0 1 0 %s\n" group))
154 (insert (format "211 %d %d %d %s\n"
155 (- (1+ (cdr nneething-active)) (car nneething-active))
156 (car nneething-active) (cdr nneething-active)
160 (defun nneething-request-list (&optional server dir)
162 (set-buffer nntp-server-buffer)
166 (defun nneething-request-newgroups (date &optional server)
168 (set-buffer nntp-server-buffer)
172 (defun nneething-request-post (&optional server)
173 (mail-send-and-exit nil))
175 (defalias 'nneething-request-post-buffer 'nnmail-request-post-buffer)
177 (defun nneething-close-group (group &optional server)
181 ;;; Internal functions.
183 (defun nneething-possibly-change-directory (group &optional dir)
186 (if (and nneething-group
187 (string= group nneething-group))
190 (if (setq entry (assoc group nneething-group-alist))
192 (setq nneething-group group)
193 (setq nneething-directory (nth 1 entry))
194 (setq nneething-map (nth 2 entry))
195 (setq nneething-active (nth 3 entry)))
196 (setq nneething-group group)
197 (setq nneething-directory dir)
198 (setq nneething-map nil)
199 (setq nneething-active (cons 1 0))
200 (nneething-create-mapping)
201 (setq nneething-group-alist
202 (cons (list group dir nneething-map nneething-active)
203 nneething-group-alist)))))))
205 (defun nneething-map-file ()
206 ;; We make sure that the .nneething directory exists.
207 (make-directory nneething-map-file-directory 'parents)
208 ;; We store it in a special directory under the user's home dir.
209 (concat (file-name-as-directory nneething-map-file-directory)
210 nneething-group nneething-map-file))
212 (defun nneething-create-mapping ()
213 ;; Read nneething-active and nneething-map
214 (let ((map-file (nneething-map-file))
215 (files (directory-files nneething-directory))
217 (if (file-exists-p map-file)
219 (load map-file nil t t)
221 (or nneething-active (setq nneething-active (cons 1 0)))
222 ;; Remove files matching that regexp.
226 (if (string-match nneething-exclude-files (car f))
227 (if prev (setcdr prev (cdr f))
228 (setq files (cdr files)))
231 ;; Remove files that have disappeared from the map.
232 (let ((map nneething-map)
235 (if (member (car (car map)) files)
239 (setcdr prev (cdr map))
240 (setq nneething-map (cdr nneething-map))))
241 (setq map (cdr map))))
242 ;; Find all new files and enter them into the map.
244 (or (assoc (car files) nneething-map) ; If already in the map, ignore.
247 (setcdr nneething-active (1+ (cdr nneething-active)))
249 (cons (cons (car files) (cdr nneething-active)) nneething-map))))
250 (setq files (cdr files)))
251 (if (or (not touched) nneething-read-only)
254 (set-buffer (get-buffer-create " *nneething map*"))
255 (buffer-disable-undo (current-buffer))
257 (insert "(setq nneething-map '" (prin1-to-string nneething-map) ")\n"
258 "(setq nneething-active '" (prin1-to-string nneething-active)
260 (write-region (point-min) (point-max) map-file nil 'nomesg)
261 (kill-buffer (current-buffer))))))
263 (defvar nneething-message-id-number 0)
264 (defvar nneething-work-buffer " *nneething work*")
266 (defun nneething-insert-head (file)
267 (and (nneething-get-head file)
268 (insert-buffer-substring nneething-work-buffer)))
270 (defun nneething-make-head (file)
271 (let ((atts (file-attributes file)))
272 (insert "Subject: " (file-name-nondirectory file) "\n"
273 "Message-ID: <nneething-"
275 (setq nneething-message-id-number
276 (1+ nneething-message-id-number)))
277 "@" (system-name) ">\n"
278 "Date: " (current-time-string (nth 5 atts)) "\n"
279 (nneething-from-line (nth 2 atts))
280 "Chars: " (int-to-string (nth 7 atts)) "\n")))
282 (defun nneething-from-line (uid)
283 (let ((login (condition-case nil
284 (user-login-name uid)
286 (cond ((= uid (user-uid)) (user-login-name))
288 (t (int-to-string uid))))))
289 (name (condition-case nil
292 (cond ((= uid (user-uid)) (user-full-name))
293 ((zerop uid) "Ms. Root"))))))
294 (concat "From: " login "@" (system-name)
295 (if name (concat " (" name ")") "") "\n")))
297 (defun nneething-get-head (file)
299 (set-buffer (get-buffer-create nneething-work-buffer))
300 (setq case-fold-search nil)
301 (buffer-disable-undo (current-buffer))
304 ((not (file-exists-p file))
305 ;; The file do not exist.
307 ((or (file-directory-p file)
308 (file-symlink-p file))
309 ;; It's a dir, so we fudge a head.
310 (nneething-make-head file) t)
312 ;; We examine the file.
313 (nnheader-insert-head file)
314 (if (nnheader-article-p)
317 (goto-char (point-min))
318 (or (and (search-forward "\n\n" nil t)
323 (nneething-make-head file))
326 (defun nneething-number-to-file (number)
327 (car (rassq number nneething-map)))
329 (defun nneething-file-name (article)
330 (concat (file-name-as-directory nneething-directory)
331 (if (numberp article) (nneething-number-to-file article)
336 ;;; nneething.el ends here