1 ;;; nnspool.el --- spool access for GNU Emacs
2 ;; Copyright (C) 1988,89,90,93,94,95 Free Software Foundation, Inc.
4 ;; Author: Masanobu UMEDA <umerin@flab.flab.fujitsu.junet>
5 ;; Lars Magne Ingebrigtsen <larsi@ifi.uio.no>
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.
32 (defvar nnspool-inews-program news-inews-program
33 "Program to post news.
34 This is most commonly `inews' or `injnews'.")
36 (defvar nnspool-inews-switches '("-h")
37 "Switches for nnspool-request-post to pass to `inews' for posting news.
38 If you are using Cnews, you probably should set this variable to nil.")
40 (defvar nnspool-spool-directory (file-name-as-directory news-path)
41 "Local news spool directory.")
43 (defvar nnspool-nov-directory (concat nnspool-spool-directory "over.view/")
44 "Local news nov directory.")
46 (defvar nnspool-lib-dir "/usr/lib/news/"
47 "Where the local news library files are stored.")
49 (defvar nnspool-active-file (concat nnspool-lib-dir "active")
50 "Local news active file.")
52 (defvar nnspool-newsgroups-file (concat nnspool-lib-dir "newsgroups")
53 "Local news newsgroups file.")
55 (defvar nnspool-distributions-file (concat nnspool-lib-dir "distributions")
56 "Local news distributions file.")
58 (defvar nnspool-history-file (concat nnspool-lib-dir "history")
59 "Local news history file.")
61 (defvar nnspool-active-times-file (concat nnspool-lib-dir "active.times")
62 "Local news active date file.")
64 (defvar nnspool-large-newsgroup 50
65 "The number of the articles which indicates a large newsgroup.
66 If the number of the articles is greater than the value, verbose
67 messages will be shown to indicate the current status.")
69 (defvar nnspool-nov-is-evil nil
70 "Non-nil means that nnspool will never return NOV lines instead of headers.")
72 (defconst nnspool-sift-nov-with-sed nil
73 "If non-nil, use sed to get the relevant portion from the overview file.
74 If nil, nnspool will load the entire file into a buffer and process it
77 (defvar nnspool-rejected-article-hook nil
78 "*A hook that will be run when an article has been rejected by the server.")
82 (defconst nnspool-version "nnspool 2.0"
83 "Version numbers of this version of NNSPOOL.")
85 (defvar nnspool-current-directory nil
86 "Current news group directory.")
88 (defvar nnspool-current-group nil)
89 (defvar nnspool-status-string "")
93 (defvar nnspool-current-server nil)
94 (defvar nnspool-server-alist nil)
95 (defvar nnspool-server-variables
97 (list 'nnspool-inews-program nnspool-inews-program)
98 (list 'nnspool-inews-switches nnspool-inews-switches)
99 (list 'nnspool-spool-directory nnspool-spool-directory)
100 (list 'nnspool-nov-directory nnspool-nov-directory)
101 (list 'nnspool-lib-dir nnspool-lib-dir)
102 (list 'nnspool-active-file nnspool-active-file)
103 (list 'nnspool-newsgroups-file nnspool-newsgroups-file)
104 (list 'nnspool-distributions-file nnspool-distributions-file)
105 (list 'nnspool-history-file nnspool-history-file)
106 (list 'nnspool-active-times-file nnspool-active-times-file)
107 (list 'nnspool-large-newsgroup nnspool-large-newsgroup)
108 (list 'nnspool-nov-is-evil nnspool-nov-is-evil)
109 (list 'nnspool-sift-nov-with-sed nnspool-sift-nov-with-sed)
110 '(nnspool-current-directory nil)
111 '(nnspool-current-group nil)
112 '(nnspool-status-string "")))
115 ;;; Interface functions.
117 (defun nnspool-retrieve-headers (articles &optional group server fetch-old)
118 "Retrieve the headers of ARTICLES."
120 (set-buffer nntp-server-buffer)
122 (when (nnspool-possibly-change-directory group)
123 (let* ((number (length articles))
125 (do-message (and (numberp nnspool-large-newsgroup)
126 (> number nnspool-large-newsgroup)))
128 (if (and (numberp (car articles))
129 (nnspool-retrieve-headers-with-nov articles fetch-old))
130 ;; We successfully retrieved the NOV headers.
132 ;; No NOV headers here, so we do it the hard way.
134 (setq article (pop articles))
135 (if (stringp article)
136 ;; This is a Message-ID.
137 (setq ag (nnspool-find-id article)
138 file (and ag (nnspool-article-pathname
141 ;; This is an article in the current group.
142 (setq file (nnspool-article-pathname
143 nnspool-current-group article)))
144 ;; Insert the head of the article.
146 (file-exists-p file))
147 (insert (format "221 %d Article retrieved.\n" article))
149 (nnheader-insert-head file)
151 (search-forward "\n\n" nil t)
154 (delete-region (point) (point-max)))
157 (zerop (% (incf count) 20))
158 (message "nnspool: Receiving headers... %d%%"
159 (/ (* count 100) number))))
162 (message "nnspool: Receiving headers...done"))
164 ;; Fold continuation lines.
165 (nnheader-fold-continuation-lines)
168 (defun nnspool-open-server (server &optional defs)
169 (nnheader-init-server-buffer)
170 (if (equal server nnspool-current-server)
172 (if nnspool-current-server
173 (setq nnspool-server-alist
174 (cons (list nnspool-current-server
175 (nnheader-save-variables nnspool-server-variables))
176 nnspool-server-alist)))
177 (let ((state (assoc server nnspool-server-alist)))
180 (nnheader-restore-variables (nth 1 state))
181 (setq nnspool-server-alist (delq state nnspool-server-alist)))
182 (nnheader-set-init-variables nnspool-server-variables defs)))
183 (setq nnspool-current-server server)))
185 (defun nnspool-close-server (&optional server)
186 (setq nnspool-current-server nil)
189 (defun nnspool-server-opened (&optional server)
190 (and (equal server nnspool-current-server)
192 (buffer-name nntp-server-buffer)))
194 (defun nnspool-status-message (&optional server)
195 "Return server status response as string."
196 nnspool-status-string)
198 (defun nnspool-request-article (id &optional group server buffer)
199 "Select article by message ID (or number)."
200 (nnspool-possibly-change-directory group)
201 (let ((nntp-server-buffer (or buffer nntp-server-buffer))
204 ;; This is a Message-ID.
205 (when (setq ag (nnspool-find-id id))
206 (setq file (nnspool-article-pathname (car ag) (cdr ag))))
207 (setq file (nnspool-article-pathname nnspool-current-group id)))
210 (not (file-directory-p file))
211 (save-excursion (nnspool-find-file file))
212 ;; We return the article number and group name.
214 (cons nnspool-current-group id)
217 (defun nnspool-request-body (id &optional group server)
218 "Select article body by message ID (or number)."
219 (nnspool-possibly-change-directory group)
220 (if (nnspool-request-article id)
222 (set-buffer nntp-server-buffer)
223 (goto-char (point-min))
224 (if (search-forward "\n\n" nil t)
225 (delete-region (point-min) (point)))
228 (defun nnspool-request-head (id &optional group server)
229 "Select article head by message ID (or number)."
230 (nnspool-possibly-change-directory group)
231 (let ((res (nnspool-request-article id)))
234 (set-buffer nntp-server-buffer)
235 (goto-char (point-min))
236 (when (search-forward "\n\n" nil t)
237 (delete-region (1- (point)) (point-max)))))
240 (defun nnspool-request-group (group &optional server dont-check)
242 (let ((pathname (nnspool-article-pathname group))
244 (if (not (file-directory-p pathname))
246 (setq nnspool-status-string
247 "Invalid group name (no such directory)")
249 (setq nnspool-current-directory pathname)
250 (setq nnspool-status-string "")
253 (setq dir (directory-files pathname nil "^[0-9]+$" t))
254 ;; yes, completely empty spool directories *are* possible
255 ;; Fix by Sudish Joseph <joseph@cis.ohio-state.edu>
262 (string-to-int name)))
266 (set-buffer nntp-server-buffer)
270 (format "211 %d %d %d %s\n" (length dir) (car dir)
271 (progn (while (cdr dir) (setq dir (cdr dir)))
274 (insert (format "211 0 0 0 %s\n" group))))))
277 (defun nnspool-close-group (group &optional server)
280 (defun nnspool-request-list (&optional server)
281 "List active newsgroups."
283 (nnspool-find-file nnspool-active-file)))
285 (defun nnspool-request-list-newsgroups (&optional server)
286 "List newsgroups (defined in NNTP2)."
288 (nnspool-find-file nnspool-newsgroups-file)))
290 (defun nnspool-request-list-distributions (&optional server)
291 "List distributions (defined in NNTP2)."
293 (nnspool-find-file nnspool-distributions-file)))
295 ;; Suggested by Hallvard B Furuseth <h.b.furuseth@usit.uio.no>.
296 (defun nnspool-request-newgroups (date &optional server)
297 "List groups created after DATE."
298 (if (nnspool-find-file nnspool-active-times-file)
300 ;; Find the last valid line.
301 (goto-char (point-max))
302 (while (and (not (looking-at
303 "\\([^ ]+\\) +\\([0-9]+\\)[0-9][0-9][0-9] "))
304 (zerop (forward-line -1))))
305 (let ((seconds (nnspool-seconds-since-epoch date))
307 ;; Go through lines and add the latest groups to a list.
308 (while (and (looking-at "\\([^ ]+\\) +[0-9]+ ")
310 ;; We insert a .0 to make the list reader
311 ;; interpret the number as a float. It is far
312 ;; too big to be stored in a lisp integer.
313 (goto-char (1- (match-end 0)))
316 (goto-char (match-end 1))
317 (read (current-buffer)))
319 (setq groups (cons (buffer-substring
320 (match-beginning 1) (match-end 1))
322 (zerop (forward-line -1))))
325 (insert (car groups) " 0 0 y\n")
326 (setq groups (cdr groups))))
330 (defun nnspool-request-post (&optional server)
331 "Post a new news in current buffer."
333 (let* ((process-connection-type nil) ; t bugs out on Solaris
334 (inews-buffer (generate-new-buffer " *nnspool post*"))
337 (apply 'start-process "*nnspool inews*" inews-buffer
338 nnspool-inews-program nnspool-inews-switches)
340 (setq nnspool-status-string (format "inews error: %S" err))
343 ;; The inews program failed.
345 (setq nnspool-status-string "")
346 (set-process-sentinel proc 'nnspool-inews-sentinel)
347 (process-send-region proc (point-min) (point-max))
348 ;; We slap a condition-case around this, because the process may
349 ;; have exited already...
351 (process-send-eof proc)
355 (defun nnspool-inews-sentinel (proc status)
357 (set-buffer (process-buffer proc))
358 (goto-char (point-min))
359 (if (or (zerop (buffer-size))
360 (search-forward "spooled" nil t))
361 (kill-buffer (current-buffer))
362 ;; Make status message by folding lines.
363 (while (re-search-forward "[ \t\n]+" nil t)
364 (replace-match " " t t))
365 (setq nnspool-status-string (buffer-string))
366 (message "nnspool: %s" nnspool-status-string)
368 (run-hooks 'nnspool-rejected-article-hook))))
371 ;;; Internal functions.
373 (defun nnspool-retrieve-headers-with-nov (articles &optional fetch-old)
374 (if (or gnus-nov-is-evil nnspool-nov-is-evil)
376 (let ((nov (concat (file-name-as-directory nnspool-nov-directory)
377 (nnspool-replace-chars-in-string
378 nnspool-current-group ?. ?/)
380 (if (not (file-exists-p nov))
383 (set-buffer nntp-server-buffer)
385 (if nnspool-sift-nov-with-sed
386 (nnspool-sift-nov-with-sed articles nov)
387 (insert-file-contents nov)
389 (not (numberp fetch-old)))
390 t ; We want all the headers.
391 ;; First we find the first wanted line.
392 (nnspool-find-nov-line
393 (if fetch-old (max 1 (- (car articles) fetch-old))
395 (delete-region (point-min) (point))
396 ;; Then we find the last wanted line.
397 (if (nnspool-find-nov-line
398 (progn (while (cdr articles) (setq articles (cdr articles)))
401 (delete-region (point) (point-max))
402 ;; If the buffer is empty, this wasn't very successful.
403 (not (zerop (buffer-size))))))))))
405 (defun nnspool-find-nov-line (article)
406 (let ((max (point-max))
407 (min (goto-char (point-min)))
408 (cur (current-buffer))
412 (goto-char (/ (+ max min) 2))
414 (if (or (= (point) prev)
418 (cond ((> (setq num (read cur)) article)
424 (when (not (eq num article))
428 (= (setq num (read cur)) article)
434 (defun nnspool-sift-nov-with-sed (articles file)
435 (let ((first (car articles))
436 (last (progn (while (cdr articles) (setq articles (cdr articles)))
438 (call-process "awk" nil t nil
439 (format "BEGIN {firstmsg=%d; lastmsg=%d;}\n $1 >= firstmsg && $1 <= lastmsg {print;}"
440 (1- first) (1+ last))
443 ;; Fixed by fdc@cliwe.ping.de (Frank D. Cringle).
444 ;; Find out what group an article identified by a Message-ID is in.
445 (defun nnspool-find-id (id)
447 (set-buffer (get-buffer-create " *nnspool work*"))
448 (buffer-disable-undo (current-buffer))
450 (call-process "grep" nil t nil id nnspool-history-file)
451 (goto-char (point-min))
453 (if (looking-at "<[^>]+>[ \t]+[-0-9~]+[ \t]+\\([^ /\t\n]+\\)/\\([0-9]+\\)[ \t\n]")
454 (cons (match-string 1) (string-to-int (match-string 2))))
455 (kill-buffer (current-buffer)))))
457 (defun nnspool-find-file (file)
458 "Insert FILE in server buffer safely."
459 (set-buffer nntp-server-buffer)
462 (progn (insert-file-contents file) t)
465 (defun nnspool-possibly-change-directory (group)
467 (let ((pathname (nnspool-article-pathname group)))
468 (if (file-directory-p pathname)
470 (setq nnspool-current-directory pathname)
471 (setq nnspool-current-group group))
472 (setq nnspool-status-string
473 (format "No such newsgroup: %s" group))
477 (defun nnspool-article-pathname (group &optional article)
478 "Find the path for GROUP."
480 (file-name-as-directory nnspool-spool-directory)
481 (nnspool-replace-chars-in-string group ?. ?/)
483 (if article (int-to-string article) "")))
485 (defun nnspool-replace-chars-in-string (string from to)
486 "Replace characters in STRING from FROM to TO."
487 (let ((string (substring string 0)) ;Copy string.
488 (len (length string))
490 ;; Replace all occurrences of FROM with TO.
492 (if (= (aref string idx) from)
493 (aset string idx to))
497 (defun nnspool-number-base-10 (num pos)
499 (setcdr num (+ (* (% (car num) 10) 65536) (cdr num)))
505 (aref "0123456789" (% (cdr num) 10)))
507 (setcdr num (/ (cdr num) 10))
508 (setcar num (/ (car num) 10))
509 (nnspool-number-base-10 num (1- pos))))))))
511 (defun nnspool-seconds-since-epoch (date)
512 (let* ((tdate (mapcar (lambda (ti) (and ti (string-to-int ti)))
513 (timezone-parse-date date)))
514 (ttime (mapcar (lambda (ti) (and ti (string-to-int ti)))
516 (aref (timezone-parse-date date) 3))))
517 (unix (encode-time (nth 2 ttime) (nth 1 ttime) (nth 0 ttime)
518 (nth 2 tdate) (nth 1 tdate) (nth 0 tdate)
520 (+ (* (car unix) 65536.0)
525 ;;; nnspool.el ends here