1 ;;; nnspool.el --- spool access for GNU Emacs
2 ;; Copyright (C) 1988,89,90,93,94,95,96,97,98 Free Software Foundation, Inc.
4 ;; Author: Masanobu UMEDA <umerin@flab.flab.fujitsu.junet>
5 ;; Lars Magne Ingebrigtsen <larsi@gnus.org>
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 the
22 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
23 ;; Boston, MA 02111-1307, USA.
29 (eval-when-compile (require 'cl))
30 (eval-when-compile (require 'gnus-clfns))
36 (nnoo-declare nnspool)
38 (defvoo nnspool-inews-program news-inews-program
39 "Program to post news.
40 This is most commonly `inews' or `injnews'.")
42 (defvoo nnspool-inews-switches '("-h" "-S")
43 "Switches for nnspool-request-post to pass to `inews' for posting news.
44 If you are using Cnews, you probably should set this variable to nil.")
46 (defvoo nnspool-spool-directory (file-name-as-directory news-path)
47 "Local news spool directory.")
49 (defvoo nnspool-nov-directory (concat nnspool-spool-directory "over.view/")
50 "Local news nov directory.")
52 (defvoo nnspool-lib-dir "/usr/lib/news/"
53 "Where the local news library files are stored.")
55 (defvoo nnspool-active-file (concat nnspool-lib-dir "active")
56 "Local news active file.")
58 (defvoo nnspool-newsgroups-file (concat nnspool-lib-dir "newsgroups")
59 "Local news newsgroups file.")
61 (defvoo nnspool-distributions-file (concat nnspool-lib-dir "distribs.pat")
62 "Local news distributions file.")
64 (defvoo nnspool-history-file (concat nnspool-lib-dir "history")
65 "Local news history file.")
67 (defvoo nnspool-active-times-file (concat nnspool-lib-dir "active.times")
68 "Local news active date file.")
70 (defvoo nnspool-large-newsgroup 50
71 "The number of the articles which indicates a large newsgroup.
72 If the number of the articles is greater than the value, verbose
73 messages will be shown to indicate the current status.")
75 (defvoo nnspool-nov-is-evil nil
76 "Non-nil means that nnspool will never return NOV lines instead of headers.")
78 (defconst nnspool-sift-nov-with-sed nil
79 "If non-nil, use sed to get the relevant portion from the overview file.
80 If nil, nnspool will load the entire file into a buffer and process it
83 (defvoo nnspool-rejected-article-hook nil
84 "*A hook that will be run when an article has been rejected by the server.")
86 (defvoo nnspool-file-coding-system nnheader-file-coding-system
87 "Coding system for nnspool.")
91 (defconst nnspool-version "nnspool 2.0"
92 "Version numbers of this version of NNSPOOL.")
94 (defvoo nnspool-current-directory nil
95 "Current news group directory.")
97 (defvoo nnspool-current-group nil)
98 (defvoo nnspool-status-string "")
101 ;;; Interface functions.
103 (nnoo-define-basics nnspool)
105 (deffoo nnspool-retrieve-headers (articles &optional group server fetch-old)
106 "Retrieve the headers of ARTICLES."
108 (set-buffer nntp-server-buffer)
110 (when (nnspool-possibly-change-directory group)
111 (let* ((number (length articles))
113 (default-directory nnspool-current-directory)
114 (do-message (and (numberp nnspool-large-newsgroup)
115 (> number nnspool-large-newsgroup)))
116 (nnheader-file-coding-system nnspool-file-coding-system)
118 (if (and (numberp (car articles))
119 (nnspool-retrieve-headers-with-nov articles fetch-old))
120 ;; We successfully retrieved the NOV headers.
122 ;; No NOV headers here, so we do it the hard way.
123 (while (setq article (pop articles))
124 (if (stringp article)
125 ;; This is a Message-ID.
126 (setq ag (nnspool-find-id article)
127 file (and ag (nnspool-article-pathname
130 ;; This is an article in the current group.
131 (setq file (int-to-string article)))
132 ;; Insert the head of the article.
134 (file-exists-p file))
136 (princ article (current-buffer))
137 (insert " Article retrieved.\n")
139 (inline (nnheader-insert-head file))
141 (if (search-forward "\n\n" nil t)
142 (progn (forward-char -1)
144 (goto-char (point-max))
148 (delete-region (point) (point-max)))
151 (zerop (% (incf count) 20))
152 (nnheader-message 5 "nnspool: Receiving headers... %d%%"
153 (/ (* count 100) number))))
156 (nnheader-message 5 "nnspool: Receiving headers...done"))
158 ;; Fold continuation lines.
159 (nnheader-fold-continuation-lines)
162 (deffoo nnspool-open-server (server &optional defs)
163 (nnoo-change-server 'nnspool server defs)
165 ((not (file-exists-p nnspool-spool-directory))
166 (nnspool-close-server)
167 (nnheader-report 'nnspool "Spool directory doesn't exist: %s"
168 nnspool-spool-directory))
169 ((not (file-directory-p
171 (file-truename nnspool-spool-directory))))
172 (nnspool-close-server)
173 (nnheader-report 'nnspool "Not a directory: %s" nnspool-spool-directory))
174 ((not (file-exists-p nnspool-active-file))
175 (nnheader-report 'nnspool "The active file doesn't exist: %s"
176 nnspool-active-file))
178 (nnheader-report 'nnspool "Opened server %s using directory %s"
179 server nnspool-spool-directory)
182 (deffoo nnspool-request-article (id &optional group server buffer)
183 "Select article by message ID (or number)."
184 (nnspool-possibly-change-directory group)
185 (let ((nntp-server-buffer (or buffer nntp-server-buffer))
188 ;; This is a Message-ID.
189 (when (setq ag (nnspool-find-id id))
190 (setq file (nnspool-article-pathname (car ag) (cdr ag))))
191 (setq file (nnspool-article-pathname nnspool-current-group id)))
194 (not (file-directory-p file))
195 (save-excursion (nnspool-find-file file))
196 ;; We return the article number and group name.
198 (cons nnspool-current-group id)
201 (deffoo nnspool-request-body (id &optional group server)
202 "Select article body by message ID (or number)."
203 (nnspool-possibly-change-directory group)
204 (let ((res (nnspool-request-article id)))
207 (set-buffer nntp-server-buffer)
208 (goto-char (point-min))
209 (when (search-forward "\n\n" nil t)
210 (delete-region (point-min) (point)))
213 (deffoo nnspool-request-head (id &optional group server)
214 "Select article head by message ID (or number)."
215 (nnspool-possibly-change-directory group)
216 (let ((res (nnspool-request-article id)))
219 (set-buffer nntp-server-buffer)
220 (goto-char (point-min))
221 (when (search-forward "\n\n" nil t)
222 (delete-region (1- (point)) (point-max)))
223 (nnheader-fold-continuation-lines)))
226 (deffoo nnspool-request-group (group &optional server dont-check)
228 (let ((pathname (nnspool-article-pathname group))
230 (if (not (file-directory-p pathname))
232 'nnspool "Invalid group name (no such directory): %s" group)
233 (setq nnspool-current-directory pathname)
234 (nnheader-report 'nnspool "Selected group %s" group)
237 (nnheader-report 'nnspool "Selected group %s" group)
239 ;; Yes, completely empty spool directories *are* possible.
240 ;; Fix by Sudish Joseph <joseph@cis.ohio-state.edu>
241 (when (setq dir (directory-files pathname nil "^[0-9]+$" t))
243 (sort (mapcar (lambda (name) (string-to-int name)) dir) '<)))
246 "211 %d %d %d %s\n" (length dir) (car dir)
247 (progn (while (cdr dir) (setq dir (cdr dir))) (car dir))
249 (nnheader-report 'nnspool "Empty group %s" group)
250 (nnheader-insert "211 0 0 0 %s\n" group))))))
252 (deffoo nnspool-request-type (group &optional article)
255 (deffoo nnspool-close-group (group &optional server)
258 (deffoo nnspool-request-list (&optional server)
259 "List active newsgroups."
261 (or (nnspool-find-file nnspool-active-file)
262 (nnheader-report 'nnspool (nnheader-file-error nnspool-active-file)))))
264 (deffoo nnspool-request-list-newsgroups (&optional server)
265 "List newsgroups (defined in NNTP2)."
267 (or (nnspool-find-file nnspool-newsgroups-file)
268 (nnheader-report 'nnspool (nnheader-file-error
269 nnspool-newsgroups-file)))))
271 (deffoo nnspool-request-list-distributions (&optional server)
272 "List distributions (defined in NNTP2)."
274 (or (nnspool-find-file nnspool-distributions-file)
275 (nnheader-report 'nnspool (nnheader-file-error
276 nnspool-distributions-file)))))
278 ;; Suggested by Hallvard B Furuseth <h.b.furuseth@usit.uio.no>.
279 (deffoo nnspool-request-newgroups (date &optional server)
280 "List groups created after DATE."
281 (if (nnspool-find-file nnspool-active-times-file)
283 ;; Find the last valid line.
284 (goto-char (point-max))
285 (while (and (not (looking-at
286 "\\([^ ]+\\) +\\([0-9]+\\)[0-9][0-9][0-9] "))
287 (zerop (forward-line -1))))
288 (let ((seconds (time-to-seconds (date-to-time date)))
290 ;; Go through lines and add the latest groups to a list.
291 (while (and (looking-at "\\([^ ]+\\) +[0-9]+ ")
293 ;; We insert a .0 to make the list reader
294 ;; interpret the number as a float. It is far
295 ;; too big to be stored in a lisp integer.
296 (goto-char (1- (match-end 0)))
299 (goto-char (match-end 1))
300 (read (current-buffer)))
302 (push (buffer-substring
303 (match-beginning 1) (match-end 1))
305 (zerop (forward-line -1))))
308 (insert (car groups) " 0 0 y\n")
309 (setq groups (cdr groups))))
313 (deffoo nnspool-request-post (&optional server)
314 "Post a new news in current buffer."
316 (let* ((process-connection-type nil) ; t bugs out on Solaris
317 (inews-buffer (generate-new-buffer " *nnspool post*"))
320 (apply 'start-process "*nnspool inews*" inews-buffer
321 nnspool-inews-program nnspool-inews-switches)
323 (nnheader-report 'nnspool "inews error: %S" err)))))
325 ;; The inews program failed.
327 (nnheader-report 'nnspool "")
328 (set-process-sentinel proc 'nnspool-inews-sentinel)
329 (process-send-region proc (point-min) (point-max))
330 ;; We slap a condition-case around this, because the process may
331 ;; have exited already...
333 (process-send-eof proc))
338 ;;; Internal functions.
340 (defun nnspool-inews-sentinel (proc status)
342 (set-buffer (process-buffer proc))
343 (goto-char (point-min))
344 (if (or (zerop (buffer-size))
345 (search-forward "spooled" nil t))
346 (kill-buffer (current-buffer))
347 ;; Make status message by folding lines.
348 (while (re-search-forward "[ \t\n]+" nil t)
349 (replace-match " " t t))
350 (nnheader-report 'nnspool "%s" (buffer-string))
351 (nnheader-message 5 "nnspool: %s" nnspool-status-string)
353 (run-hooks 'nnspool-rejected-article-hook))))
355 (defun nnspool-retrieve-headers-with-nov (articles &optional fetch-old)
356 (if (or gnus-nov-is-evil nnspool-nov-is-evil)
358 (let ((nov (nnheader-group-pathname
359 nnspool-current-group nnspool-nov-directory ".overview"))
361 (nnheader-file-coding-system nnspool-file-coding-system)
363 (if (not (file-exists-p nov))
366 (set-buffer nntp-server-buffer)
368 (if nnspool-sift-nov-with-sed
369 (nnspool-sift-nov-with-sed articles nov)
370 (nnheader-insert-file-contents nov)
372 (not (numberp fetch-old)))
373 t ; We want all the headers.
375 ;; Delete unwanted NOV lines.
376 (nnheader-nov-delete-outside-range
377 (if fetch-old (max 1 (- (car articles) fetch-old))
379 (car (last articles)))
380 ;; If the buffer is empty, this wasn't very successful.
381 (unless (zerop (buffer-size))
382 ;; We check what the last article number was.
383 ;; The NOV file may be out of sync with the articles
386 (setq last (read (current-buffer)))
387 (if (= last (car articles))
388 ;; Yup, it's all there.
390 ;; Perhaps not. We try to find the missing articles.
392 (<= last (car arts)))
394 ;; The articles in `arts' are missing from the buffer.
396 (nnspool-insert-nov-head (pop arts)))
399 (defun nnspool-insert-nov-head (article)
400 "Read the head of ARTICLE, convert to NOV headers, and insert."
402 (let ((cur (current-buffer))
404 (setq buf (nnheader-set-temp-buffer " *nnspool head*"))
405 (when (nnheader-insert-head
406 (nnspool-article-pathname nnspool-current-group article))
407 (nnheader-insert-article-line article)
408 (let ((headers (nnheader-parse-head)))
410 (goto-char (point-max))
411 (nnheader-insert-nov headers)))
414 (defun nnspool-sift-nov-with-sed (articles file)
415 (let ((first (car articles))
416 (last (progn (while (cdr articles) (setq articles (cdr articles)))
418 (call-process "awk" nil t nil
419 (format "BEGIN {firstmsg=%d; lastmsg=%d;}\n $1 >= firstmsg && $1 <= lastmsg {print;}"
420 (1- first) (1+ last))
423 ;; Fixed by fdc@cliwe.ping.de (Frank D. Cringle).
424 ;; Find out what group an article identified by a Message-ID is in.
425 (defun nnspool-find-id (id)
427 (set-buffer (get-buffer-create " *nnspool work*"))
430 (call-process "grep" nil t nil (regexp-quote id) nnspool-history-file))
431 (goto-char (point-min))
433 (when (looking-at "<[^>]+>[ \t]+[-0-9~]+[ \t]+\\([^ /\t\n]+\\)/\\([0-9]+\\)[ \t\n]")
434 (cons (match-string 1) (string-to-int (match-string 2))))
435 (kill-buffer (current-buffer)))))
437 (defun nnspool-find-file (file)
438 "Insert FILE in server buffer safely."
439 (set-buffer nntp-server-buffer)
442 (let ((nnheader-file-coding-system nnspool-file-coding-system))
443 (nnheader-insert-file-contents file)
447 (defun nnspool-possibly-change-directory (group)
450 (let ((pathname (nnspool-article-pathname group)))
451 (if (file-directory-p pathname)
452 (setq nnspool-current-directory pathname
453 nnspool-current-group group)
454 (nnheader-report 'nnspool "No such newsgroup: %s" group)))))
456 (defun nnspool-article-pathname (group &optional article)
457 "Find the path for GROUP."
458 (nnheader-group-pathname group nnspool-spool-directory article))
462 ;;; nnspool.el ends here