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41487370 | 1 | ;;; nnspool.el --- spool access for GNU Emacs |
b578f267 | 2 | |
41487370 | 3 | ;; Copyright (C) 1988,89,90,93,94,95 Free Software Foundation, Inc. |
3a801d0c | 4 | |
c2c2f720 | 5 | ;; Author: Masanobu UMEDA <umerin@flab.flab.fujitsu.junet> |
41487370 | 6 | ;; Lars Magne Ingebrigtsen <larsi@ifi.uio.no> |
d7b4d18f | 7 | ;; Keywords: news |
c2c2f720 | 8 | |
05328297 | 9 | ;; This file is part of GNU Emacs. |
10 | ||
4da31937 RS |
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) | |
14 | ;; any later version. | |
15 | ||
05328297 | 16 | ;; GNU Emacs is distributed in the hope that it will be useful, |
4da31937 RS |
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. | |
20 | ||
21 | ;; You should have received a copy of the GNU General Public License | |
b578f267 EN |
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. | |
05328297 | 25 | |
41487370 LMI |
26 | ;;; Commentary: |
27 | ||
c2c2f720 ER |
28 | ;;; Code: |
29 | ||
41487370 | 30 | (require 'nnheader) |
05328297 | 31 | (require 'nntp) |
41487370 | 32 | (require 'timezone) |
05328297 | 33 | |
34 | (defvar nnspool-inews-program news-inews-program | |
41487370 LMI |
35 | "Program to post news. |
36 | This is most commonly `inews' or `injnews'.") | |
05328297 | 37 | |
38 | (defvar nnspool-inews-switches '("-h") | |
41487370 LMI |
39 | "Switches for nnspool-request-post to pass to `inews' for posting news. |
40 | If you are using Cnews, you probably should set this variable to nil.") | |
05328297 | 41 | |
42 | (defvar nnspool-spool-directory news-path | |
41487370 LMI |
43 | "Local news spool directory.") |
44 | ||
45 | (defvar nnspool-nov-directory (concat nnspool-spool-directory "over.view/") | |
46 | "Local news nov directory.") | |
47 | ||
48 | (defvar nnspool-lib-dir "/usr/lib/news/" | |
49 | "Where the local news library files are stored.") | |
50 | ||
51 | (defvar nnspool-active-file (concat nnspool-lib-dir "active") | |
52 | "Local news active file.") | |
05328297 | 53 | |
41487370 LMI |
54 | (defvar nnspool-newsgroups-file (concat nnspool-lib-dir "newsgroups") |
55 | "Local news newsgroups file.") | |
05328297 | 56 | |
41487370 LMI |
57 | (defvar nnspool-distributions-file (concat nnspool-lib-dir "distributions") |
58 | "Local news distributions file.") | |
b027f415 | 59 | |
41487370 LMI |
60 | (defvar nnspool-history-file (concat nnspool-lib-dir "history") |
61 | "Local news history file.") | |
b027f415 | 62 | |
41487370 LMI |
63 | (defvar nnspool-active-times-file (concat nnspool-lib-dir "active.times") |
64 | "Local news active date file.") | |
65 | ||
66 | (defvar nnspool-large-newsgroup 50 | |
67 | "The number of the articles which indicates a large newsgroup. | |
68 | If the number of the articles is greater than the value, verbose | |
69 | messages will be shown to indicate the current status.") | |
70 | ||
71 | (defvar nnspool-nov-is-evil nil | |
72 | "Non-nil means that nnspool will never return NOV lines instead of headers.") | |
73 | ||
74 | (defconst nnspool-sift-nov-with-sed nil | |
75 | "If non-nil, use sed to get the relevant portion from the overview file. | |
76 | If nil, nnspool will load the entire file into a buffer and process it | |
77 | there.") | |
05328297 | 78 | |
79 | \f | |
80 | ||
41487370 | 81 | (defconst nnspool-version "nnspool 2.0" |
05328297 | 82 | "Version numbers of this version of NNSPOOL.") |
83 | ||
84 | (defvar nnspool-current-directory nil | |
85 | "Current news group directory.") | |
86 | ||
41487370 LMI |
87 | (defvar nnspool-current-group nil) |
88 | (defvar nnspool-status-string "") | |
89 | ||
90 | \f | |
91 | ||
92 | (defvar nnspool-current-server nil) | |
93 | (defvar nnspool-server-alist nil) | |
94 | (defvar nnspool-server-variables | |
95 | (list | |
96 | (list 'nnspool-inews-program nnspool-inews-program) | |
97 | (list 'nnspool-inews-switches nnspool-inews-switches) | |
98 | (list 'nnspool-spool-directory nnspool-spool-directory) | |
99 | (list 'nnspool-nov-directory nnspool-nov-directory) | |
100 | (list 'nnspool-lib-dir nnspool-lib-dir) | |
101 | (list 'nnspool-active-file nnspool-active-file) | |
102 | (list 'nnspool-newsgroups-file nnspool-newsgroups-file) | |
103 | (list 'nnspool-distributions-file nnspool-distributions-file) | |
104 | (list 'nnspool-history-file nnspool-history-file) | |
105 | (list 'nnspool-active-times-file nnspool-active-times-file) | |
106 | (list 'nnspool-large-newsgroup nnspool-large-newsgroup) | |
107 | (list 'nnspool-nov-is-evil nnspool-nov-is-evil) | |
108 | (list 'nnspool-sift-nov-with-sed nnspool-sift-nov-with-sed) | |
109 | '(nnspool-current-directory nil) | |
110 | '(nnspool-current-group nil) | |
111 | '(nnspool-status-string ""))) | |
05328297 | 112 | |
113 | \f | |
41487370 LMI |
114 | ;;; Interface functions. |
115 | ||
116 | (defun nnspool-retrieve-headers (sequence &optional newsgroup server) | |
117 | "Retrieve the headers for the articles in SEQUENCE. | |
118 | Newsgroup must be selected before calling this function." | |
119 | (save-excursion | |
120 | (set-buffer nntp-server-buffer) | |
121 | (erase-buffer) | |
122 | (let* ((number (length sequence)) | |
123 | (count 0) | |
124 | (do-message (and (numberp nnspool-large-newsgroup) | |
125 | (> number nnspool-large-newsgroup))) | |
126 | file beg article) | |
127 | (if (not (nnspool-possibly-change-directory newsgroup)) | |
128 | () | |
129 | (if (and (numberp (car sequence)) | |
130 | (nnspool-retrieve-headers-with-nov sequence)) | |
131 | 'nov | |
132 | (while sequence | |
133 | (setq article (car sequence)) | |
134 | (if (stringp article) | |
135 | (progn | |
136 | (setq file (nnspool-find-article-by-message-id article)) | |
137 | (setq article 0)) | |
138 | (setq file (concat nnspool-current-directory | |
139 | (int-to-string article)))) | |
140 | (and file (file-exists-p file) | |
141 | (progn | |
142 | (insert (format "221 %d Article retrieved.\n" article)) | |
143 | (setq beg (point)) | |
144 | (nnheader-insert-head file) | |
145 | (goto-char beg) | |
146 | (search-forward "\n\n" nil t) | |
147 | (forward-char -1) | |
148 | (insert ".\n") | |
149 | (delete-region (point) (point-max)))) | |
150 | (setq sequence (cdr sequence)) | |
151 | ||
152 | (and do-message | |
153 | (zerop (% (setq count (1+ count)) 20)) | |
154 | (message "NNSPOOL: Receiving headers... %d%%" | |
155 | (/ (* count 100) number)))) | |
156 | ||
157 | (and do-message (message "NNSPOOL: Receiving headers...done")) | |
158 | ||
159 | ;; Fold continuation lines. | |
160 | (goto-char (point-min)) | |
161 | (while (re-search-forward "\\(\r?\n[ \t]+\\)+" nil t) | |
162 | (replace-match " " t t)) | |
163 | 'headers))))) | |
164 | ||
165 | (defun nnspool-open-server (server &optional defs) | |
166 | (nnheader-init-server-buffer) | |
167 | (if (equal server nnspool-current-server) | |
168 | t | |
169 | (if nnspool-current-server | |
170 | (setq nnspool-server-alist | |
171 | (cons (list nnspool-current-server | |
172 | (nnheader-save-variables nnspool-server-variables)) | |
173 | nnspool-server-alist))) | |
174 | (let ((state (assoc server nnspool-server-alist))) | |
175 | (if state | |
176 | (progn | |
177 | (nnheader-restore-variables (nth 1 state)) | |
178 | (setq nnspool-server-alist (delq state nnspool-server-alist))) | |
179 | (nnheader-set-init-variables nnspool-server-variables defs))) | |
180 | (setq nnspool-current-server server))) | |
181 | ||
182 | (defun nnspool-close-server (&optional server) | |
183 | t) | |
184 | ||
185 | (defun nnspool-server-opened (&optional server) | |
186 | (and (equal server nnspool-current-server) | |
187 | nntp-server-buffer | |
188 | (buffer-name nntp-server-buffer))) | |
189 | ||
190 | (defun nnspool-status-message (&optional server) | |
05328297 | 191 | "Return server status response as string." |
41487370 | 192 | nnspool-status-string) |
05328297 | 193 | |
41487370 | 194 | (defun nnspool-request-article (id &optional newsgroup server buffer) |
05328297 | 195 | "Select article by message ID (or number)." |
41487370 | 196 | (nnspool-possibly-change-directory newsgroup) |
05328297 | 197 | (let ((file (if (stringp id) |
198 | (nnspool-find-article-by-message-id id) | |
41487370 LMI |
199 | (concat nnspool-current-directory (prin1-to-string id)))) |
200 | (nntp-server-buffer (or buffer nntp-server-buffer))) | |
05328297 | 201 | (if (and (stringp file) |
202 | (file-exists-p file) | |
203 | (not (file-directory-p file))) | |
204 | (save-excursion | |
41487370 | 205 | (nnspool-find-file file))))) |
05328297 | 206 | |
41487370 | 207 | (defun nnspool-request-body (id &optional newsgroup server) |
05328297 | 208 | "Select article body by message ID (or number)." |
41487370 | 209 | (nnspool-possibly-change-directory newsgroup) |
05328297 | 210 | (if (nnspool-request-article id) |
211 | (save-excursion | |
212 | (set-buffer nntp-server-buffer) | |
213 | (goto-char (point-min)) | |
214 | (if (search-forward "\n\n" nil t) | |
215 | (delete-region (point-min) (point))) | |
41487370 | 216 | t))) |
05328297 | 217 | |
41487370 | 218 | (defun nnspool-request-head (id &optional newsgroup server) |
05328297 | 219 | "Select article head by message ID (or number)." |
41487370 | 220 | (nnspool-possibly-change-directory newsgroup) |
05328297 | 221 | (if (nnspool-request-article id) |
222 | (save-excursion | |
223 | (set-buffer nntp-server-buffer) | |
224 | (goto-char (point-min)) | |
225 | (if (search-forward "\n\n" nil t) | |
226 | (delete-region (1- (point)) (point-max))) | |
41487370 | 227 | t))) |
05328297 | 228 | |
41487370 | 229 | (defun nnspool-request-group (group &optional server dont-check) |
05328297 | 230 | "Select news GROUP." |
231 | (let ((pathname (nnspool-article-pathname | |
41487370 LMI |
232 | (nnspool-replace-chars-in-string group ?. ?/))) |
233 | dir) | |
234 | (if (not (file-directory-p pathname)) | |
235 | (progn | |
236 | (setq nnspool-status-string | |
237 | "Invalid group name (no such directory)") | |
238 | nil) | |
239 | (setq nnspool-current-directory pathname) | |
240 | (setq nnspool-status-string "") | |
241 | (if (not dont-check) | |
242 | (progn | |
243 | (setq dir (directory-files pathname nil "^[0-9]+$" t)) | |
244 | ;; yes, completely empty spool directories *are* possible | |
245 | ;; Fix by Sudish Joseph <joseph@cis.ohio-state.edu> | |
246 | (and dir | |
247 | (setq dir | |
248 | (sort | |
249 | (mapcar | |
250 | (function | |
251 | (lambda (name) | |
252 | (string-to-int name))) | |
253 | dir) | |
254 | '<))) | |
255 | (save-excursion | |
256 | (set-buffer nntp-server-buffer) | |
257 | (erase-buffer) | |
258 | (if dir | |
259 | (insert | |
260 | (format "211 %d %d %d %s\n" (length dir) (car dir) | |
261 | (progn (while (cdr dir) (setq dir (cdr dir))) | |
262 | (car dir)) | |
263 | group)) | |
264 | (insert (format "211 0 0 0 %s\n" group)))))) | |
265 | t))) | |
266 | ||
267 | (defun nnspool-close-group (group &optional server) | |
268 | t) | |
269 | ||
270 | (defun nnspool-request-list (&optional server) | |
271 | "List active newsgroups." | |
05328297 | 272 | (save-excursion |
273 | (nnspool-find-file nnspool-active-file))) | |
274 | ||
41487370 | 275 | (defun nnspool-request-list-newsgroups (&optional server) |
b027f415 RS |
276 | "List newsgroups (defined in NNTP2)." |
277 | (save-excursion | |
278 | (nnspool-find-file nnspool-newsgroups-file))) | |
279 | ||
41487370 | 280 | (defun nnspool-request-list-distributions (&optional server) |
b027f415 RS |
281 | "List distributions (defined in NNTP2)." |
282 | (save-excursion | |
283 | (nnspool-find-file nnspool-distributions-file))) | |
284 | ||
41487370 LMI |
285 | ;; Suggested by Hallvard B Furuseth <h.b.furuseth@usit.uio.no>. |
286 | (defun nnspool-request-newgroups (date &optional server) | |
287 | "List groups created after DATE." | |
288 | (if (nnspool-find-file nnspool-active-times-file) | |
289 | (save-excursion | |
290 | ;; Find the last valid line. | |
291 | (goto-char (point-max)) | |
292 | (while (and (not (looking-at | |
293 | "\\([^ ]+\\) +\\([0-9]+\\)[0-9][0-9][0-9] ")) | |
294 | (zerop (forward-line -1)))) | |
295 | (let ((seconds (nnspool-seconds-since-epoch date)) | |
296 | groups) | |
297 | ;; Go through lines and add the latest groups to a list. | |
298 | (while (and (looking-at "\\([^ ]+\\) +[0-9]+ ") | |
299 | (progn | |
300 | ;; We insert a .0 to make the list reader | |
301 | ;; interpret the number as a float. It is far | |
302 | ;; too big to be stored in a lisp integer. | |
303 | (goto-char (1- (match-end 0))) | |
304 | (insert ".0") | |
305 | (> (progn | |
306 | (goto-char (match-end 1)) | |
307 | (read (current-buffer))) | |
308 | seconds)) | |
309 | (setq groups (cons (buffer-substring | |
310 | (match-beginning 1) (match-end 1)) | |
311 | groups)) | |
312 | (zerop (forward-line -1)))) | |
313 | (erase-buffer) | |
314 | (while groups | |
315 | (insert (car groups) " 0 0 y\n") | |
316 | (setq groups (cdr groups)))) | |
317 | t) | |
318 | nil)) | |
319 | ||
320 | (defun nnspool-request-post (&optional server) | |
05328297 | 321 | "Post a new news in current buffer." |
322 | (save-excursion | |
41487370 LMI |
323 | (let* ((process-connection-type nil) ; t bugs out on Solaris |
324 | (inews-buffer (generate-new-buffer " *nnspool post*")) | |
325 | (proc (apply 'start-process "*nnspool inews*" inews-buffer | |
326 | nnspool-inews-program nnspool-inews-switches))) | |
327 | (set-process-sentinel proc 'nnspool-inews-sentinel) | |
328 | (process-send-region proc (point-min) (point-max)) | |
329 | ;; We slap a condition-case around this, because the process may | |
330 | ;; have exited already... | |
331 | (condition-case nil | |
332 | (process-send-eof proc) | |
333 | (error nil)) | |
334 | t))) | |
335 | ||
336 | (defun nnspool-inews-sentinel (proc status) | |
337 | (save-excursion | |
338 | (set-buffer (process-buffer proc)) | |
339 | (goto-char (point-min)) | |
340 | (if (or (zerop (buffer-size)) | |
341 | (search-forward "spooled" nil t)) | |
342 | (kill-buffer (current-buffer)) | |
05328297 | 343 | ;; Make status message by unfolding lines. |
344 | (subst-char-in-region (point-min) (point-max) ?\n ?\\ 'noundo) | |
41487370 LMI |
345 | (setq nnspool-status-string (buffer-string)) |
346 | (message "nnspool: %s" nnspool-status-string) | |
347 | ;(kill-buffer (current-buffer)) | |
348 | ))) | |
05328297 | 349 | |
41487370 | 350 | (defalias 'nnspool-request-post-buffer 'nntp-request-post-buffer) |
05328297 | 351 | |
41487370 LMI |
352 | \f |
353 | ;;; Internal functions. | |
354 | ||
355 | (defun nnspool-retrieve-headers-with-nov (articles) | |
356 | (if (or gnus-nov-is-evil nnspool-nov-is-evil) | |
357 | nil | |
358 | (let ((nov (concat (file-name-as-directory nnspool-nov-directory) | |
359 | (nnspool-replace-chars-in-string | |
360 | nnspool-current-group ?. ?/) | |
361 | "/.overview")) | |
362 | article) | |
363 | (if (file-exists-p nov) | |
364 | (save-excursion | |
365 | (set-buffer nntp-server-buffer) | |
366 | (erase-buffer) | |
367 | (if nnspool-sift-nov-with-sed | |
368 | (nnspool-sift-nov-with-sed articles nov) | |
369 | (insert-file-contents nov) | |
370 | ;; First we find the first wanted line. We issue a number | |
a7acbbe4 | 371 | ;; of search-forwards - the first article we are looking |
41487370 LMI |
372 | ;; for may be expired, so we have to go on searching until |
373 | ;; we find one of the articles we want. | |
374 | (while (and articles | |
375 | (setq article (concat (int-to-string | |
376 | (car articles)) "\t")) | |
377 | (not (or (looking-at article) | |
378 | (search-forward (concat "\n" article) | |
379 | nil t)))) | |
380 | (setq articles (cdr articles))) | |
381 | (if (not articles) | |
382 | () | |
383 | (beginning-of-line) | |
384 | (delete-region (point-min) (point)) | |
385 | ;; Then we find the last wanted line. We go to the end | |
386 | ;; of the buffer and search backward much the same way | |
387 | ;; we did to find the first article. | |
388 | ;; !!! Perhaps it would be better just to do a (last articles), | |
389 | ;; and go forward successively over each line and | |
390 | ;; compare to avoid this (reverse), like this: | |
391 | ;; (while (and (>= last (read nntp-server-buffer))) | |
392 | ;; (zerop (forward-line 1)))) | |
393 | (setq articles (reverse articles)) | |
394 | (goto-char (point-max)) | |
395 | (while (and articles | |
396 | (not (search-backward | |
397 | (concat "\n" (int-to-string (car articles)) | |
398 | "\t") nil t))) | |
399 | (setq articles (cdr articles))) | |
400 | (if articles | |
401 | (progn | |
402 | (forward-line 2) | |
403 | (delete-region (point) (point-max))))) | |
404 | (or articles (progn (erase-buffer) nil)))))))) | |
405 | ||
406 | (defun nnspool-sift-nov-with-sed (articles file) | |
407 | (let ((first (car articles)) | |
408 | (last (progn (while (cdr articles) (setq articles (cdr articles))) | |
409 | (car articles)))) | |
410 | (call-process "awk" nil t nil | |
411 | (format "BEGIN {firstmsg=%d; lastmsg=%d;}\n $1 >= firstmsg && $1 <= lastmsg {print;}" | |
412 | (1- first) (1+ last)) | |
413 | file))) | |
414 | ||
415 | ;; Fixed by fdc@cliwe.ping.de (Frank D. Cringle). | |
05328297 | 416 | (defun nnspool-find-article-by-message-id (id) |
eb8c3be9 | 417 | "Return full pathname of an article identified by message-ID." |
05328297 | 418 | (save-excursion |
41487370 LMI |
419 | (let ((buf (get-buffer-create " *nnspool work*"))) |
420 | (set-buffer buf) | |
421 | (erase-buffer) | |
422 | (call-process "grep" nil t nil id nnspool-history-file) | |
423 | (goto-char (point-min)) | |
424 | (if (looking-at "<[^>]+>[ \t]+[-0-9~]+[ \t]+\\([^ \t\n]*\\)") | |
425 | (concat nnspool-spool-directory | |
426 | (nnspool-replace-chars-in-string | |
427 | (buffer-substring (match-beginning 1) (match-end 1)) | |
428 | ?. ?/)))))) | |
05328297 | 429 | |
430 | (defun nnspool-find-file (file) | |
431 | "Insert FILE in server buffer safely." | |
432 | (set-buffer nntp-server-buffer) | |
433 | (erase-buffer) | |
434 | (condition-case () | |
435 | (progn (insert-file-contents file) t) | |
41487370 LMI |
436 | (file-error nil))) |
437 | ||
438 | (defun nnspool-possibly-change-directory (newsgroup) | |
439 | (if newsgroup | |
440 | (let ((pathname (nnspool-article-pathname | |
441 | (nnspool-replace-chars-in-string newsgroup ?. ?/)))) | |
442 | (if (file-directory-p pathname) | |
443 | (progn | |
444 | (setq nnspool-current-directory pathname) | |
445 | (setq nnspool-current-group newsgroup)) | |
446 | (setq nnspool-status-string | |
447 | (format "No such newsgroup: %s" newsgroup)) | |
448 | nil)) | |
449 | t)) | |
05328297 | 450 | |
451 | (defun nnspool-article-pathname (group) | |
452 | "Make pathname for GROUP." | |
453 | (concat (file-name-as-directory nnspool-spool-directory) group "/")) | |
454 | ||
455 | (defun nnspool-replace-chars-in-string (string from to) | |
456 | "Replace characters in STRING from FROM to TO." | |
457 | (let ((string (substring string 0)) ;Copy string. | |
458 | (len (length string)) | |
459 | (idx 0)) | |
eb8c3be9 | 460 | ;; Replace all occurrences of FROM with TO. |
05328297 | 461 | (while (< idx len) |
462 | (if (= (aref string idx) from) | |
463 | (aset string idx to)) | |
464 | (setq idx (1+ idx))) | |
41487370 LMI |
465 | string)) |
466 | ||
467 | (defun nnspool-number-base-10 (num pos) | |
468 | (if (<= pos 0) "" | |
469 | (setcdr num (+ (* (% (car num) 10) 65536) (cdr num))) | |
470 | (apply | |
471 | 'concat | |
472 | (reverse | |
473 | (list | |
474 | (char-to-string | |
475 | (aref "0123456789" (% (cdr num) 10))) | |
476 | (progn | |
477 | (setcdr num (/ (cdr num) 10)) | |
478 | (setcar num (/ (car num) 10)) | |
479 | (nnspool-number-base-10 num (1- pos)))))))) | |
480 | ||
481 | (defun nnspool-seconds-since-epoch (date) | |
482 | (let* ((tdate (mapcar (lambda (ti) (and ti (string-to-int ti))) | |
483 | (timezone-parse-date date))) | |
484 | (ttime (mapcar (lambda (ti) (and ti (string-to-int ti))) | |
485 | (timezone-parse-time | |
486 | (aref (timezone-parse-date date) 3)))) | |
487 | (unix (encode-time (nth 2 ttime) (nth 1 ttime) (nth 0 ttime) | |
488 | (nth 2 tdate) (nth 1 tdate) (nth 0 tdate) (nth 4 tdate)))) | |
489 | (+ (* (car unix) 65536.0) | |
490 | (car (cdr unix))))) | |
49116ac0 JB |
491 | |
492 | (provide 'nnspool) | |
6594deb0 ER |
493 | |
494 | ;;; nnspool.el ends here |