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