1 ;;; nnslashdot.el --- interfacing with Slashdot
2 ;; Copyright (C) 1999, 2000, 2001 Free Software Foundation, Inc.
4 ;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
7 ;; This file is part of GNU Emacs.
9 ;; GNU Emacs is free software; you can redistribute it and/or modify
10 ;; it under the terms of the GNU General Public License as published by
11 ;; the Free Software Foundation; either version 2, or (at your option)
14 ;; GNU Emacs is distributed in the hope that it will be useful,
15 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
16 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 ;; GNU General Public License for more details.
19 ;; You should have received a copy of the GNU General Public License
20 ;; along with GNU Emacs; see the file COPYING. If not, write to the
21 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
22 ;; Boston, MA 02111-1307, USA.
26 ;; Note: You need to have `url' and `w3' installed for this
31 (eval-when-compile (require 'cl))
32 (eval-when-compile (require 'gnus-clfns))
42 (nnoo-declare nnslashdot)
44 (defvoo nnslashdot-directory (nnheader-concat gnus-directory "slashdot/")
45 "Where nnslashdot will save its files.")
47 (defvoo nnslashdot-active-url "http://slashdot.org/search.pl?section=&min=%d"
48 "Where nnslashdot will fetch the active file from.")
50 (defvoo nnslashdot-comments-url "http://slashdot.org/comments.pl?sid=%s&threshold=%d&commentsort=%d&mode=flat&startat=%d"
51 "Where nnslashdot will fetch comments from.")
53 (defvoo nnslashdot-article-url
54 "http://slashdot.org/article.pl?sid=%s&mode=nocomment"
55 "Where nnslashdot will fetch the article from.")
57 (defvoo nnslashdot-backslash-url "http://slashdot.org/slashdot.xml"
58 "Where nnslashdot will fetch the stories from.")
60 (defvoo nnslashdot-threshold -1
61 "The article threshold.")
63 (defvoo nnslashdot-threaded t
64 "Whether the nnslashdot groups should be threaded or not.")
66 (defvoo nnslashdot-group-number 0
67 "The number of non-fresh groups to keep updated.")
69 (defvoo nnslashdot-login-name ""
70 "The login name to use when posting.")
72 (defvoo nnslashdot-password ""
73 "The password to use when posting.")
75 ;;; Internal variables
77 (defvar nnslashdot-groups nil)
78 (defvar nnslashdot-buffer nil)
79 (defvar nnslashdot-headers nil)
81 ;;; Interface functions
83 (nnoo-define-basics nnslashdot)
85 (deffoo nnslashdot-retrieve-headers (articles &optional group server fetch-old)
86 (nnslashdot-possibly-change-server group server)
88 (unless gnus-nov-is-evil
89 (nnslashdot-retrieve-headers-1 articles group))
90 (search-failed (nnslashdot-lose why))))
92 (deffoo nnslashdot-retrieve-headers-1 (articles group)
93 (let* ((last (car (last articles)))
94 (start (if nnslashdot-threaded 1 (pop articles)))
95 (entry (assoc group nnslashdot-groups))
98 headers article subject score from date lines parent point cid
101 (set-buffer nnslashdot-buffer)
102 (let ((case-fold-search t))
105 (mm-url-insert (format nnslashdot-article-url
106 (nnslashdot-sid-strip sid)) t)
107 (goto-char (point-min))
108 (re-search-forward "Posted by[ \t\r\n]+")
109 (when (looking-at "\\(<a[^>]+>\\)?[ \t\r\n]*\\([^<\r\n]+\\)")
110 (setq from (mm-url-decode-entities-string (match-string 2))))
111 (search-forward "on ")
112 (setq date (nnslashdot-date-to-date
113 (buffer-substring (point) (1- (search-forward "<")))))
114 (setq lines (/ (- (point)
115 (progn (forward-line 1) (point)))
120 (make-full-mail-header
122 (concat "<" (nnslashdot-sid-strip sid) "%1@slashdot>")
125 (setq start (if nnslashdot-threaded 2 (pop articles))))
126 (while (and start (<= start last))
127 (setq point (goto-char (point-max)))
129 (format nnslashdot-comments-url
130 (nnslashdot-sid-strip sid)
131 nnslashdot-threshold 0 (- start 2))
133 (when (and nnslashdot-threaded first-comments)
134 (setq first-comments nil)
135 (goto-char (point-max))
136 (while (re-search-backward "startat=\\([0-9]+\\)" nil t)
137 (setq s (string-to-number (match-string 1)))
138 (unless (memq s startats)
140 (setq startats (sort startats '<)))
141 (setq article (if (and article (< start article)) article start))
143 (while (re-search-forward
144 "<a name=\"\\([0-9]+\\)\"><\\(b\\|H4\\)>\\([^<]+\\)</\\(b\\|H4\\)>.*score:\\([^)]+\\))"
146 (setq cid (match-string 1)
147 subject (match-string 3)
148 score (match-string 5))
149 (unless (assq article (nth 4 entry))
150 (setcar (nthcdr 4 entry) (cons (cons article cid) (nth 4 entry)))
152 (when (string-match "^Re: *" subject)
153 (setq subject (concat "Re: " (substring subject (match-end 0)))))
154 (setq subject (mm-url-decode-entities-string subject))
155 (search-forward "<BR>")
157 "by[ \t\n]+<a[^>]+>\\([^<]+\\)</a>[ \t\n]*(\\(<[^>]+>\\)*\\([^<>)]+\\))")
159 (goto-char (- (match-end 0) 5))
161 (mm-url-decode-entities-string (match-string 1))
162 " <" (match-string 3) ">")))
164 (when (looking-at "by \\([^<>]*\\) on ")
165 (goto-char (- (match-end 0) 5))
166 (setq from (mm-url-decode-entities-string (match-string 1)))))
167 (search-forward " on ")
169 (nnslashdot-date-to-date
170 (buffer-substring (point) (progn (skip-chars-forward "^()<>\n\r") (point)))))
171 (setq lines (/ (abs (- (search-forward "<td")
172 (search-forward "</td>")))
175 (re-search-forward ".*cid=\\([0-9]+\\)\">Parent</A>" nil t))
177 (setq parent (match-string 1))
178 (when (string= parent "0")
183 (make-full-mail-header
185 (concat subject " (" score ")")
187 (concat "<" (nnslashdot-sid-strip sid) "%" cid "@slashdot>")
189 (concat "<" (nnslashdot-sid-strip sid) "%"
194 (while (and articles (<= (car articles) article))
196 (setq article (1+ article)))
197 (if nnslashdot-threaded
199 (setq start (pop startats))
200 (if start (setq start (+ start 2))))
201 (setq start (pop articles))))))
202 (if changed (nnslashdot-write-groups))
203 (setq nnslashdot-headers (sort headers 'car-less-than-car))
205 (set-buffer nntp-server-buffer)
207 (mm-with-unibyte-current-buffer
208 (dolist (header nnslashdot-headers)
209 (nnheader-insert-nov (cdr header)))))
212 (deffoo nnslashdot-request-group (group &optional server dont-check)
213 (nnslashdot-possibly-change-server nil server)
214 (let ((elem (assoc group nnslashdot-groups)))
217 (nnheader-report 'nnslashdot "Group does not exist"))
219 (nnheader-report 'nnslashdot "Opened group %s" group)
221 "211 %d %d %d %s\n" (cadr elem) 1 (cadr elem)
222 (prin1-to-string group))))))
224 (deffoo nnslashdot-close-group (group &optional server)
225 (nnslashdot-possibly-change-server group server)
226 (when (gnus-buffer-live-p nnslashdot-buffer)
228 (set-buffer nnslashdot-buffer)
229 (kill-buffer nnslashdot-buffer)))
232 (deffoo nnslashdot-request-article (article &optional group server buffer)
233 (nnslashdot-possibly-change-server group server)
237 (set-buffer nnslashdot-buffer)
238 (let ((case-fold-search t))
239 (goto-char (point-min))
240 (when (and (stringp article)
241 (string-match "%\\([0-9]+\\)@" article))
242 (setq cid (match-string 1 article))
243 (let ((map (nth 4 (assoc group nnslashdot-groups))))
245 (if (equal (cdar map) cid)
246 (setq article (caar map)
248 (setq map (cdr map))))))
249 (when (numberp article)
254 (search-forward "<BR>")
260 "< [ \t\r\n]*<A HREF=\"\\(\\(http:\\)?//slashdot\\.org\\)?/article")
261 (match-beginning 0)))))
262 (setq cid (cdr (assq article
263 (nth 4 (assoc group nnslashdot-groups)))))
264 (search-forward (format "<a name=\"%s\">" cid))
267 (re-search-forward "<td[^>]*>")
268 (search-forward "</td>")))))))
269 (search-failed (nnslashdot-lose why)))
273 (set-buffer (or buffer nntp-server-buffer))
275 (mm-with-unibyte-current-buffer
277 (goto-char (point-min))
278 (while (re-search-forward "\\(<br>\r?\\)+" nil t)
279 (replace-match "<p>" t t))
280 (goto-char (point-min))
281 (insert "Content-Type: text/html\nMIME-Version: 1.0\n")
282 (insert "Newsgroups: " (caddr (assoc group nnslashdot-groups))
284 (let ((header (cdr (assq article nnslashdot-headers))))
285 (nnheader-insert-header header))
286 (nnheader-report 'nnslashdot "Fetched article %s" article))
287 (cons group article)))))
289 (deffoo nnslashdot-close-server (&optional server)
290 (when (and (nnslashdot-server-opened server)
291 (gnus-buffer-live-p nnslashdot-buffer))
293 (set-buffer nnslashdot-buffer)
294 (kill-buffer nnslashdot-buffer)))
295 (nnoo-close-server 'nnslashdot server))
297 (deffoo nnslashdot-request-list (&optional server)
298 (nnslashdot-possibly-change-server nil server)
300 sid elem description articles gname)
302 ;; First we do the Ultramode to get info on all the latest groups.
304 (mm-with-unibyte-buffer
305 (mm-url-insert nnslashdot-backslash-url t)
306 (goto-char (point-min))
307 (while (search-forward "<story>" nil t)
308 (narrow-to-region (point) (search-forward "</story>"))
309 (goto-char (point-min))
310 (re-search-forward "<title>\\([^<]+\\)</title>")
312 (mm-url-decode-entities-string (match-string 1)))
313 (re-search-forward "<url>\\([^<]+\\)</url>")
314 (setq sid (match-string 1))
315 (string-match "sid=\\([0-9/]+\\)\\(.shtml\\|$\\)" sid)
316 (setq sid (match-string 1 sid))
317 (re-search-forward "<comments>\\([^<]+\\)</comments>")
318 (setq articles (string-to-number (match-string 1)))
319 (setq gname (concat description " (" sid ")"))
320 (if (setq elem (assoc gname nnslashdot-groups))
321 (setcar (cdr elem) articles)
322 (push (list gname articles sid (current-time) nil)
324 (goto-char (point-max))
326 ;; Then do the older groups.
327 (while (> (- nnslashdot-group-number number) 0)
328 (mm-with-unibyte-buffer
329 (let ((case-fold-search t))
330 (mm-url-insert (format nnslashdot-active-url number) t)
331 (goto-char (point-min))
332 (while (re-search-forward
333 "article.pl\\?sid=\\([^&]+\\).*<b>\\([^<]+\\)</b>"
335 (setq sid (match-string 1)
337 (mm-url-decode-entities-string (match-string 2)))
339 (when (re-search-forward "<b>\\([0-9]+\\)</b>" nil t)
340 (setq articles (string-to-number (match-string 1))))
341 (setq gname (concat description " (" sid ")"))
342 (if (setq elem (assoc gname nnslashdot-groups))
343 (setcar (cdr elem) articles)
344 (push (list gname articles sid (current-time) nil)
345 nnslashdot-groups)))))
347 (search-failed (nnslashdot-lose why)))
348 (nnslashdot-write-groups)
349 (nnslashdot-generate-active)
352 (deffoo nnslashdot-request-newgroups (date &optional server)
353 (nnslashdot-possibly-change-server nil server)
354 (nnslashdot-generate-active)
357 (deffoo nnslashdot-request-post (&optional server)
358 (nnslashdot-possibly-change-server nil server)
359 (let ((sid (nnslashdot-sid-strip (message-fetch-field "newsgroups")))
360 (subject (message-fetch-field "subject"))
361 (references (car (last (split-string
362 (message-fetch-field "references")))))
364 (string-match "%\\([0-9]+\\)@slashdot" references)
365 (setq pid (match-string 1 references))
367 (narrow-to-region (point) (progn (message-goto-signature) (point)))
368 (goto-char (point-min))
370 (if (looking-at "> ")
372 (delete-region (point) (+ (point) 2))
374 (insert "<blockquote>\n"))
377 (insert "</blockquote>\n")
380 (goto-char (point-min))
381 (while (re-search-forward "^ *\n" nil t)
382 (replace-match "<p>\n"))
384 (when (message-goto-signature)
392 (setq body (buffer-substring (point) (point-max)))
395 "http://slashdot.org/comments.pl"
398 ("rlogin" . "userlogin")
399 ("unickname" . ,nnslashdot-login-name)
400 ("upasswd" . ,nnslashdot-password)
401 ("postersubj" . ,subject)
403 ("postercomment" . ,body)
404 ("posttype" . "html")))))
406 (deffoo nnslashdot-request-delete-group (group &optional force server)
407 (nnslashdot-possibly-change-server group server)
408 (setq nnslashdot-groups (delq (assoc group nnslashdot-groups)
410 (nnslashdot-write-groups))
412 (deffoo nnslashdot-request-close ()
413 (setq nnslashdot-headers nil
414 nnslashdot-groups nil))
416 (deffoo nnslashdot-request-expire-articles
417 (articles group &optional server force)
418 (nnslashdot-possibly-change-server group server)
419 (let ((item (assoc group nnslashdot-groups)))
422 (when (and (>= (length articles) (cadr item)) ;; All are expirable.
423 (nnmail-expired-article-p
427 (setq nnslashdot-groups (delq item nnslashdot-groups))
428 (nnslashdot-write-groups)
429 (setq articles nil)) ;; all expired.
430 (setcdr (cddr item) (list (current-time)))
431 (nnslashdot-write-groups))))
434 (nnoo-define-skeleton nnslashdot)
436 ;;; Internal functions
438 (defun nnslashdot-possibly-change-server (&optional group server)
439 (nnslashdot-init server)
441 (not (nnslashdot-server-opened server)))
442 (nnslashdot-open-server server))
443 (unless nnslashdot-groups
444 (nnslashdot-read-groups)))
446 (defun nnslashdot-make-tuple (tuple n)
451 (setcdr tuple (list nil)))
452 (setq tuple (cdr tuple)
455 (defun nnslashdot-read-groups ()
456 (let ((file (expand-file-name "groups" nnslashdot-directory)))
457 (when (file-exists-p file)
458 (mm-with-unibyte-buffer
459 (insert-file-contents file)
460 (goto-char (point-min))
461 (setq nnslashdot-groups (read (current-buffer))))
462 (if (and nnslashdot-groups (< (length (car nnslashdot-groups)) 5))
463 (let ((groups nnslashdot-groups))
465 (nnslashdot-make-tuple (car groups) 5)
466 (setq groups (cdr groups))))))))
468 (defun nnslashdot-write-groups ()
469 (with-temp-file (expand-file-name "groups" nnslashdot-directory)
470 (gnus-prin1 nnslashdot-groups)))
472 (defun nnslashdot-init (server)
473 "Initialize buffers and such."
474 (unless (file-exists-p nnslashdot-directory)
475 (gnus-make-directory nnslashdot-directory))
476 (unless (gnus-buffer-live-p nnslashdot-buffer)
477 (setq nnslashdot-buffer
479 (nnheader-set-temp-buffer
480 (format " *nnslashdot %s*" server))))
481 (push nnslashdot-buffer gnus-buffers)))
483 (defun nnslashdot-date-to-date (sdate)
485 (let ((elem (delete "" (split-string sdate))))
486 (concat (substring (nth 0 elem) 0 3) " "
487 (substring (nth 1 elem) 0 3) " "
488 (substring (nth 2 elem) 0 2) " "
489 (substring (nth 3 elem) 1 6) " "
490 (format-time-string "%Y") " "
494 (defun nnslashdot-generate-active ()
496 (set-buffer nntp-server-buffer)
498 (dolist (elem nnslashdot-groups)
499 (insert (prin1-to-string (car elem))
500 " " (number-to-string (cadr elem)) " 1 y\n"))))
502 (defun nnslashdot-lose (why)
503 (error "Slashdot HTML has changed; please get a new version of nnslashdot"))
505 ;(defun nnslashdot-sid-strip (sid)
506 ; (if (string-match "^00/" sid)
507 ; (substring sid (match-end 0))
510 (defalias 'nnslashdot-sid-strip 'identity)
512 (provide 'nnslashdot)
514 ;;; nnslashdot.el ends here