1 ;;; nnslashdot.el --- interfacing with Slashdot
2 ;; Copyright (C) 1999, 2000, 2001, 2002 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.
28 (eval-when-compile (require 'cl))
29 (eval-when-compile (require 'gnus-clfns))
39 (nnoo-declare nnslashdot)
41 (defvoo nnslashdot-directory (nnheader-concat gnus-directory "slashdot/")
42 "Where nnslashdot will save its files.")
44 (defvoo nnslashdot-active-url "http://slashdot.org/search.pl?section=&min=%d"
45 "Where nnslashdot will fetch the active file from.")
47 (defvoo nnslashdot-comments-url "http://slashdot.org/comments.pl?sid=%s&threshold=%d&commentsort=%d&mode=flat&startat=%d"
48 "Where nnslashdot will fetch comments from.")
50 (defvoo nnslashdot-article-url
51 "http://slashdot.org/article.pl?sid=%s&mode=nocomment"
52 "Where nnslashdot will fetch the article from.")
54 (defvoo nnslashdot-backslash-url "http://slashdot.org/slashdot.xml"
55 "Where nnslashdot will fetch the stories from.")
57 (defvoo nnslashdot-use-front-page nil
58 "Use the front page in addition to the backslash page.")
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 sid) t)
106 (goto-char (point-min))
108 (error "Couldn't open connection to slashdot"))
109 (re-search-forward "Posted by[ \t\r\n]+")
110 (when (looking-at "\\(<a[^>]+>\\)?[ \t\r\n]*\\([^<\r\n]+\\)")
111 (setq from (mm-url-decode-entities-string (match-string 2))))
112 (search-forward "on ")
113 (setq date (nnslashdot-date-to-date
114 (buffer-substring (point) (1- (search-forward "<")))))
115 (setq lines (/ (- (point)
116 (progn (forward-line 1) (point)))
121 (make-full-mail-header
123 (concat "<" sid "%1@slashdot>")
126 (setq start (if nnslashdot-threaded 2 (pop articles))))
127 (while (and start (<= start last))
128 (setq point (goto-char (point-max)))
130 (format nnslashdot-comments-url 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 "<" sid "%" cid "@slashdot>")
189 (concat "<" sid "%" parent "@slashdot>")
193 (while (and articles (<= (car articles) article))
195 (setq article (1+ article)))
196 (if nnslashdot-threaded
198 (setq start (pop startats))
199 (if start (setq start (+ start 2))))
200 (setq start (pop articles))))))
201 (if changed (nnslashdot-write-groups))
202 (setq nnslashdot-headers (sort headers 'car-less-than-car))
204 (set-buffer nntp-server-buffer)
206 (mm-with-unibyte-current-buffer
207 (dolist (header nnslashdot-headers)
208 (nnheader-insert-nov (cdr header)))))
211 (deffoo nnslashdot-request-group (group &optional server dont-check)
212 (nnslashdot-possibly-change-server nil server)
213 (let ((elem (assoc group nnslashdot-groups)))
216 (nnheader-report 'nnslashdot "Group does not exist"))
218 (nnheader-report 'nnslashdot "Opened group %s" group)
220 "211 %d %d %d %s\n" (cadr elem) 1 (cadr elem)
221 (prin1-to-string group))))))
223 (deffoo nnslashdot-close-group (group &optional server)
224 (nnslashdot-possibly-change-server group server)
225 (when (gnus-buffer-live-p nnslashdot-buffer)
227 (set-buffer nnslashdot-buffer)
228 (kill-buffer nnslashdot-buffer)))
231 (deffoo nnslashdot-request-article (article &optional group server buffer)
232 (nnslashdot-possibly-change-server group server)
236 (set-buffer nnslashdot-buffer)
237 (let ((case-fold-search t))
238 (goto-char (point-min))
239 (when (and (stringp article)
240 (string-match "%\\([0-9]+\\)@" article))
241 (setq cid (match-string 1 article))
242 (let ((map (nth 4 (assoc group nnslashdot-groups))))
244 (if (equal (cdar map) cid)
245 (setq article (caar map)
247 (setq map (cdr map))))))
248 (when (numberp article)
253 (search-forward "<BR>")
259 "<IFRAME\\|<SCRIPT LANGUAGE=\"JAVASCRIPT\">\\|<!-- no ad 6 -->\\|< [ \t\r\n]*<A HREF=\"\\(\\(http:\\)?//slashdot\\.org\\)?/article")
260 (match-beginning 0)))))
261 (setq cid (cdr (assq article
262 (nth 4 (assoc group nnslashdot-groups)))))
263 (search-forward (format "<a name=\"%s\">" cid))
266 (re-search-forward "<td[^>]*>")
267 (search-forward "</td>")))))))
268 (search-failed (nnslashdot-lose why)))
272 (set-buffer (or buffer nntp-server-buffer))
274 (mm-with-unibyte-current-buffer
276 (goto-char (point-min))
277 (while (re-search-forward "\\(<br>\r?\\)+" nil t)
278 (replace-match "<p>" t t))
279 (goto-char (point-min))
280 (insert "Content-Type: text/html\nMIME-Version: 1.0\n")
281 (insert "Newsgroups: " (caddr (assoc group nnslashdot-groups))
283 (let ((header (cdr (assq article nnslashdot-headers))))
284 (nnheader-insert-header header))
285 (nnheader-report 'nnslashdot "Fetched article %s" article))
286 (cons group article)))))
288 (deffoo nnslashdot-close-server (&optional server)
289 (when (and (nnslashdot-server-opened server)
290 (gnus-buffer-live-p nnslashdot-buffer))
292 (set-buffer nnslashdot-buffer)
293 (kill-buffer nnslashdot-buffer)))
294 (nnoo-close-server 'nnslashdot server))
296 (deffoo nnslashdot-request-list (&optional server)
297 (nnslashdot-possibly-change-server nil server)
299 (first nnslashdot-use-front-page)
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))
308 (error "Couldn't open connection to slashdot"))
309 (while (search-forward "<story>" nil t)
310 (narrow-to-region (point) (search-forward "</story>"))
311 (goto-char (point-min))
312 (re-search-forward "<title>\\([^<]+\\)</title>")
314 (mm-url-decode-entities-string (match-string 1)))
315 (re-search-forward "<url>\\([^<]+\\)</url>")
316 (setq sid (match-string 1))
317 (string-match "sid=\\([0-9/]+\\)\\(.shtml\\|$\\)" sid)
318 (setq sid (match-string 1 sid))
319 (re-search-forward "<comments>\\([^<]+\\)</comments>")
320 (setq articles (string-to-number (match-string 1)))
321 (setq gname (concat description " (" sid ")"))
322 (if (setq elem (assoc gname nnslashdot-groups))
323 (setcar (cdr elem) articles)
324 (push (list gname articles sid (current-time) nil)
326 (goto-char (point-max))
328 ;; Then do the older groups.
330 (> (- nnslashdot-group-number number) 0))
332 (mm-with-unibyte-buffer
333 (let ((case-fold-search t))
334 (mm-url-insert (format nnslashdot-active-url number) t)
335 (goto-char (point-min))
336 (while (re-search-forward
337 "article.pl\\?sid=\\([^&]+\\).*>\\([^<]+\\)</a>"
339 (setq sid (match-string 1)
341 (mm-url-decode-entities-string (match-string 2)))
343 (when (re-search-forward "with \\([0-9]+\\) comment" nil t)
344 (setq articles (1+ (string-to-number (match-string 1)))))
345 (setq gname (concat description " (" sid ")"))
346 (if (setq elem (assoc gname nnslashdot-groups))
347 (setcar (cdr elem) articles)
348 (push (list gname articles sid (current-time) nil)
349 nnslashdot-groups)))))
351 (search-failed (nnslashdot-lose why)))
352 (nnslashdot-write-groups)
353 (nnslashdot-generate-active)
356 (deffoo nnslashdot-request-newgroups (date &optional server)
357 (nnslashdot-possibly-change-server nil server)
358 (nnslashdot-generate-active)
361 (deffoo nnslashdot-request-post (&optional server)
362 (nnslashdot-possibly-change-server nil server)
363 (let ((sid (message-fetch-field "newsgroups"))
364 (subject (message-fetch-field "subject"))
365 (references (car (last (split-string
366 (message-fetch-field "references")))))
368 (string-match "%\\([0-9]+\\)@slashdot" references)
369 (setq pid (match-string 1 references))
371 (narrow-to-region (point) (progn (message-goto-signature) (point)))
372 (goto-char (point-min))
374 (if (looking-at "> ")
376 (delete-region (point) (+ (point) 2))
378 (insert "<blockquote>\n"))
381 (insert "</blockquote>\n")
384 (goto-char (point-min))
385 (while (re-search-forward "^ *\n" nil t)
386 (replace-match "<p>\n"))
388 (when (message-goto-signature)
396 (setq body (buffer-substring (point) (point-max)))
399 "http://slashdot.org/comments.pl"
402 ("rlogin" . "userlogin")
403 ("unickname" . ,nnslashdot-login-name)
404 ("upasswd" . ,nnslashdot-password)
405 ("postersubj" . ,subject)
407 ("postercomment" . ,body)
408 ("posttype" . "html")))))
410 (deffoo nnslashdot-request-delete-group (group &optional force server)
411 (nnslashdot-possibly-change-server group server)
412 (setq nnslashdot-groups (delq (assoc group nnslashdot-groups)
414 (nnslashdot-write-groups))
416 (deffoo nnslashdot-request-close ()
417 (setq nnslashdot-headers nil
418 nnslashdot-groups nil))
420 (deffoo nnslashdot-request-expire-articles
421 (articles group &optional server force)
422 (nnslashdot-possibly-change-server group server)
423 (let ((item (assoc group nnslashdot-groups)))
426 (when (and (>= (length articles) (cadr item)) ;; All are expirable.
427 (nnmail-expired-article-p
431 (setq nnslashdot-groups (delq item nnslashdot-groups))
432 (nnslashdot-write-groups)
433 (setq articles nil)) ;; all expired.
434 (setcdr (cddr item) (list (current-time)))
435 (nnslashdot-write-groups))))
438 (nnoo-define-skeleton nnslashdot)
440 ;;; Internal functions
442 (defun nnslashdot-possibly-change-server (&optional group server)
443 (nnslashdot-init server)
445 (not (nnslashdot-server-opened server)))
446 (nnslashdot-open-server server))
447 (unless nnslashdot-groups
448 (nnslashdot-read-groups)))
450 (defun nnslashdot-make-tuple (tuple n)
455 (setcdr tuple (list nil)))
456 (setq tuple (cdr tuple)
459 (defun nnslashdot-read-groups ()
460 (let ((file (expand-file-name "groups" nnslashdot-directory)))
461 (when (file-exists-p file)
462 (mm-with-unibyte-buffer
463 (insert-file-contents file)
464 (goto-char (point-min))
465 (setq nnslashdot-groups (read (current-buffer))))
466 (if (and nnslashdot-groups (< (length (car nnslashdot-groups)) 5))
467 (let ((groups nnslashdot-groups))
469 (nnslashdot-make-tuple (car groups) 5)
470 (setq groups (cdr groups))))))))
472 (defun nnslashdot-write-groups ()
473 (with-temp-file (expand-file-name "groups" nnslashdot-directory)
474 (gnus-prin1 nnslashdot-groups)))
476 (defun nnslashdot-init (server)
477 "Initialize buffers and such."
478 (unless (file-exists-p nnslashdot-directory)
479 (gnus-make-directory nnslashdot-directory))
480 (unless (gnus-buffer-live-p nnslashdot-buffer)
481 (setq nnslashdot-buffer
483 (nnheader-set-temp-buffer
484 (format " *nnslashdot %s*" server))))
485 (push nnslashdot-buffer gnus-buffers)))
487 (defun nnslashdot-date-to-date (sdate)
489 (let ((elem (delete "" (split-string sdate))))
490 (concat (substring (nth 0 elem) 0 3) " "
491 (substring (nth 1 elem) 0 3) " "
492 (substring (nth 2 elem) 0 2) " "
493 (substring (nth 3 elem) 1 6) " "
494 (format-time-string "%Y") " "
498 (defun nnslashdot-generate-active ()
500 (set-buffer nntp-server-buffer)
502 (dolist (elem nnslashdot-groups)
503 (insert (prin1-to-string (car elem))
504 " " (number-to-string (cadr elem)) " 1 y\n"))))
506 (defun nnslashdot-lose (why)
507 (error "Slashdot HTML has changed; please get a new version of nnslashdot"))
509 ;(defun nnslashdot-sid-strip (sid)
510 ; (if (string-match "^00/" sid)
511 ; (substring sid (match-end 0))
514 (provide 'nnslashdot)
516 ;;; nnslashdot.el ends here