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))
38 (nnoo-declare nnslashdot)
40 (defvoo nnslashdot-directory (nnheader-concat gnus-directory "slashdot/")
41 "Where nnslashdot will save its files.")
43 (defvoo nnslashdot-active-url "http://slashdot.org/search.pl?section=&min=%d"
44 "Where nnslashdot will fetch the active file from.")
46 (defvoo nnslashdot-comments-url "http://slashdot.org/comments.pl?sid=%s&threshold=%d&commentsort=%d&mode=flat&startat=%d"
47 "Where nnslashdot will fetch comments from.")
49 (defvoo nnslashdot-article-url
50 "http://slashdot.org/article.pl?sid=%s&mode=nocomment"
51 "Where nnslashdot will fetch the article from.")
53 (defvoo nnslashdot-backslash-url "http://slashdot.org/slashdot.xml"
54 "Where nnslashdot will fetch the stories from.")
56 (defvoo nnslashdot-use-front-page nil
57 "Use the front page in addition to the backslash page.")
59 (defvoo nnslashdot-threshold -1
60 "The article threshold.")
62 (defvoo nnslashdot-threaded t
63 "Whether the nnslashdot groups should be threaded or not.")
65 (defvoo nnslashdot-group-number 0
66 "The number of non-fresh groups to keep updated.")
68 (defvoo nnslashdot-login-name ""
69 "The login name to use when posting.")
71 (defvoo nnslashdot-password ""
72 "The password to use when posting.")
74 ;;; Internal variables
76 (defvar nnslashdot-groups nil)
77 (defvar nnslashdot-buffer nil)
78 (defvar nnslashdot-headers nil)
80 ;;; Interface functions
82 (nnoo-define-basics nnslashdot)
84 (deffoo nnslashdot-retrieve-headers (articles &optional group server fetch-old)
85 (nnslashdot-possibly-change-server group server)
87 (unless gnus-nov-is-evil
88 (nnslashdot-retrieve-headers-1 articles group))
89 (search-failed (nnslashdot-lose why))))
91 (deffoo nnslashdot-retrieve-headers-1 (articles group)
92 (let* ((last (car (last articles)))
93 (start (if nnslashdot-threaded 1 (pop articles)))
94 (entry (assoc group nnslashdot-groups))
97 headers article subject score from date lines parent point cid
100 (set-buffer nnslashdot-buffer)
101 (let ((case-fold-search t))
104 (mm-url-insert (format nnslashdot-article-url sid) t)
105 (goto-char (point-min))
107 (error "Couldn't open connection to slashdot"))
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 "<" 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 sid
130 nnslashdot-threshold 0 (- start 2))
132 (when (and nnslashdot-threaded first-comments)
133 (setq first-comments nil)
134 (goto-char (point-max))
135 (while (re-search-backward "startat=\\([0-9]+\\)" nil t)
136 (setq s (string-to-number (match-string 1)))
137 (unless (memq s startats)
139 (setq startats (sort startats '<)))
140 (setq article (if (and article (< start article)) article start))
142 (while (re-search-forward
143 "<a name=\"\\([0-9]+\\)\"><\\(b\\|H4\\)>\\([^<]+\\)</\\(b\\|H4\\)>.*score:\\([^)]+\\))"
145 (setq cid (match-string 1)
146 subject (match-string 3)
147 score (match-string 5))
148 (unless (assq article (nth 4 entry))
149 (setcar (nthcdr 4 entry) (cons (cons article cid) (nth 4 entry)))
151 (when (string-match "^Re: *" subject)
152 (setq subject (concat "Re: " (substring subject (match-end 0)))))
153 (setq subject (mm-url-decode-entities-string subject))
154 (search-forward "<BR>")
156 "by[ \t\n]+<a[^>]+>\\([^<]+\\)</a>[ \t\n]*(\\(<[^>]+>\\)*\\([^<>)]+\\))")
158 (goto-char (- (match-end 0) 5))
160 (mm-url-decode-entities-string (match-string 1))
161 " <" (match-string 3) ">")))
163 (when (looking-at "by \\([^<>]*\\) on ")
164 (goto-char (- (match-end 0) 5))
165 (setq from (mm-url-decode-entities-string (match-string 1)))))
166 (search-forward " on ")
168 (nnslashdot-date-to-date
169 (buffer-substring (point) (progn (skip-chars-forward "^()<>\n\r") (point)))))
170 (setq lines (/ (abs (- (search-forward "<td")
171 (search-forward "</td>")))
174 (re-search-forward ".*cid=\\([0-9]+\\)\">Parent</A>" nil t))
176 (setq parent (match-string 1))
177 (when (string= parent "0")
182 (make-full-mail-header
184 (concat subject " (" score ")")
186 (concat "<" sid "%" cid "@slashdot>")
188 (concat "<" sid "%" parent "@slashdot>")
192 (while (and articles (<= (car articles) article))
194 (setq article (1+ article)))
195 (if nnslashdot-threaded
197 (setq start (pop startats))
198 (if start (setq start (+ start 2))))
199 (setq start (pop articles))))))
200 (if changed (nnslashdot-write-groups))
201 (setq nnslashdot-headers (sort headers 'car-less-than-car))
203 (set-buffer nntp-server-buffer)
205 (mm-with-unibyte-current-buffer
206 (dolist (header nnslashdot-headers)
207 (nnheader-insert-nov (cdr header)))))
210 (deffoo nnslashdot-request-group (group &optional server dont-check)
211 (nnslashdot-possibly-change-server nil server)
212 (let ((elem (assoc group nnslashdot-groups)))
215 (nnheader-report 'nnslashdot "Group does not exist"))
217 (nnheader-report 'nnslashdot "Opened group %s" group)
219 "211 %d %d %d %s\n" (cadr elem) 1 (cadr elem)
220 (prin1-to-string group))))))
222 (deffoo nnslashdot-close-group (group &optional server)
223 (nnslashdot-possibly-change-server group server)
224 (when (gnus-buffer-live-p nnslashdot-buffer)
226 (set-buffer nnslashdot-buffer)
227 (kill-buffer nnslashdot-buffer)))
230 (deffoo nnslashdot-request-article (article &optional group server buffer)
231 (nnslashdot-possibly-change-server group server)
235 (set-buffer nnslashdot-buffer)
236 (let ((case-fold-search t))
237 (goto-char (point-min))
238 (when (and (stringp article)
239 (string-match "%\\([0-9]+\\)@" article))
240 (setq cid (match-string 1 article))
241 (let ((map (nth 4 (assoc group nnslashdot-groups))))
243 (if (equal (cdar map) cid)
244 (setq article (caar map)
246 (setq map (cdr map))))))
247 (when (numberp article)
252 (search-forward "<BR>")
258 "<IFRAME\\|<SCRIPT LANGUAGE=\"JAVASCRIPT\">\\|<!-- no ad 6 -->\\|< [ \t\r\n]*<A HREF=\"\\(\\(http:\\)?//slashdot\\.org\\)?/article")
259 (match-beginning 0)))))
260 (setq cid (cdr (assq article
261 (nth 4 (assoc group nnslashdot-groups)))))
262 (search-forward (format "<a name=\"%s\">" cid))
265 (re-search-forward "<td[^>]*>")
266 (search-forward "</td>")))))))
267 (search-failed (nnslashdot-lose why)))
271 (set-buffer (or buffer nntp-server-buffer))
273 (mm-with-unibyte-current-buffer
275 (goto-char (point-min))
276 (while (re-search-forward "\\(<br>\r?\\)+" nil t)
277 (replace-match "<p>" t t))
278 (goto-char (point-min))
279 (insert "Content-Type: text/html\nMIME-Version: 1.0\n")
280 (insert "Newsgroups: " (caddr (assoc group nnslashdot-groups))
282 (let ((header (cdr (assq article nnslashdot-headers))))
283 (nnheader-insert-header header))
284 (nnheader-report 'nnslashdot "Fetched article %s" article))
285 (cons group article)))))
287 (deffoo nnslashdot-close-server (&optional server)
288 (when (and (nnslashdot-server-opened server)
289 (gnus-buffer-live-p nnslashdot-buffer))
291 (set-buffer nnslashdot-buffer)
292 (kill-buffer nnslashdot-buffer)))
293 (nnoo-close-server 'nnslashdot server))
295 (deffoo nnslashdot-request-list (&optional server)
296 (nnslashdot-possibly-change-server nil server)
298 (first nnslashdot-use-front-page)
299 sid elem description articles gname)
301 ;; First we do the Ultramode to get info on all the latest groups.
303 (mm-with-unibyte-buffer
304 (mm-url-insert nnslashdot-backslash-url t)
305 (goto-char (point-min))
307 (error "Couldn't open connection to slashdot"))
308 (while (search-forward "<story>" nil t)
309 (narrow-to-region (point) (search-forward "</story>"))
310 (goto-char (point-min))
311 (re-search-forward "<title>\\([^<]+\\)</title>")
313 (mm-url-decode-entities-string (match-string 1)))
314 (re-search-forward "<url>\\([^<]+\\)</url>")
315 (setq sid (match-string 1))
316 (string-match "sid=\\([0-9/]+\\)\\(.shtml\\|$\\)" sid)
317 (setq sid (match-string 1 sid))
318 (re-search-forward "<comments>\\([^<]+\\)</comments>")
319 (setq articles (string-to-number (match-string 1)))
320 (setq gname (concat description " (" sid ")"))
321 (if (setq elem (assoc gname nnslashdot-groups))
322 (setcar (cdr elem) articles)
323 (push (list gname articles sid (current-time) nil)
325 (goto-char (point-max))
327 ;; Then do the older groups.
329 (> (- nnslashdot-group-number number) 0))
331 (mm-with-unibyte-buffer
332 (let ((case-fold-search t))
333 (mm-url-insert (format nnslashdot-active-url number) t)
334 (goto-char (point-min))
335 (while (re-search-forward
336 "article.pl\\?sid=\\([^&]+\\).*>\\([^<]+\\)</a>"
338 (setq sid (match-string 1)
340 (mm-url-decode-entities-string (match-string 2)))
342 (when (re-search-forward "with \\([0-9]+\\) comment" nil t)
343 (setq articles (1+ (string-to-number (match-string 1)))))
344 (setq gname (concat description " (" sid ")"))
345 (if (setq elem (assoc gname nnslashdot-groups))
346 (setcar (cdr elem) articles)
347 (push (list gname articles sid (current-time) nil)
348 nnslashdot-groups)))))
350 (search-failed (nnslashdot-lose why)))
351 (nnslashdot-write-groups)
352 (nnslashdot-generate-active)
355 (deffoo nnslashdot-request-newgroups (date &optional server)
356 (nnslashdot-possibly-change-server nil server)
357 (nnslashdot-generate-active)
360 (deffoo nnslashdot-request-post (&optional server)
361 (nnslashdot-possibly-change-server nil server)
362 (let ((sid (message-fetch-field "newsgroups"))
363 (subject (message-fetch-field "subject"))
364 (references (car (last (split-string
365 (message-fetch-field "references")))))
367 (string-match "%\\([0-9]+\\)@slashdot" references)
368 (setq pid (match-string 1 references))
370 (narrow-to-region (point) (progn (message-goto-signature) (point)))
371 (goto-char (point-min))
373 (if (looking-at "> ")
375 (delete-region (point) (+ (point) 2))
377 (insert "<blockquote>\n"))
380 (insert "</blockquote>\n")
383 (goto-char (point-min))
384 (while (re-search-forward "^ *\n" nil t)
385 (replace-match "<p>\n"))
387 (when (message-goto-signature)
395 (setq body (buffer-substring (point) (point-max)))
398 "http://slashdot.org/comments.pl"
401 ("rlogin" . "userlogin")
402 ("unickname" . ,nnslashdot-login-name)
403 ("upasswd" . ,nnslashdot-password)
404 ("postersubj" . ,subject)
406 ("postercomment" . ,body)
407 ("posttype" . "html")))))
409 (deffoo nnslashdot-request-delete-group (group &optional force server)
410 (nnslashdot-possibly-change-server group server)
411 (setq nnslashdot-groups (delq (assoc group nnslashdot-groups)
413 (nnslashdot-write-groups))
415 (deffoo nnslashdot-request-close ()
416 (setq nnslashdot-headers nil
417 nnslashdot-groups nil))
419 (deffoo nnslashdot-request-expire-articles
420 (articles group &optional server force)
421 (nnslashdot-possibly-change-server group server)
422 (let ((item (assoc group nnslashdot-groups)))
425 (when (and (>= (length articles) (cadr item)) ;; All are expirable.
426 (nnmail-expired-article-p
430 (setq nnslashdot-groups (delq item nnslashdot-groups))
431 (nnslashdot-write-groups)
432 (setq articles nil)) ;; all expired.
433 (setcdr (cddr item) (list (current-time)))
434 (nnslashdot-write-groups))))
437 (nnoo-define-skeleton nnslashdot)
439 ;;; Internal functions
441 (defun nnslashdot-possibly-change-server (&optional group server)
442 (nnslashdot-init server)
444 (not (nnslashdot-server-opened server)))
445 (nnslashdot-open-server server))
446 (unless nnslashdot-groups
447 (nnslashdot-read-groups)))
449 (defun nnslashdot-make-tuple (tuple n)
454 (setcdr tuple (list nil)))
455 (setq tuple (cdr tuple)
458 (defun nnslashdot-read-groups ()
459 (let ((file (expand-file-name "groups" nnslashdot-directory)))
460 (when (file-exists-p file)
461 (mm-with-unibyte-buffer
462 (insert-file-contents file)
463 (goto-char (point-min))
464 (setq nnslashdot-groups (read (current-buffer))))
465 (if (and nnslashdot-groups (< (length (car nnslashdot-groups)) 5))
466 (let ((groups nnslashdot-groups))
468 (nnslashdot-make-tuple (car groups) 5)
469 (setq groups (cdr groups))))))))
471 (defun nnslashdot-write-groups ()
472 (with-temp-file (expand-file-name "groups" nnslashdot-directory)
473 (gnus-prin1 nnslashdot-groups)))
475 (defun nnslashdot-init (server)
476 "Initialize buffers and such."
477 (unless (file-exists-p nnslashdot-directory)
478 (gnus-make-directory nnslashdot-directory))
479 (unless (gnus-buffer-live-p nnslashdot-buffer)
480 (setq nnslashdot-buffer
482 (nnheader-set-temp-buffer
483 (format " *nnslashdot %s*" server))))
484 (push nnslashdot-buffer gnus-buffers)))
486 (defun nnslashdot-date-to-date (sdate)
488 (let ((elem (delete "" (split-string sdate))))
489 (concat (substring (nth 0 elem) 0 3) " "
490 (substring (nth 1 elem) 0 3) " "
491 (substring (nth 2 elem) 0 2) " "
492 (substring (nth 3 elem) 1 6) " "
493 (format-time-string "%Y") " "
497 (defun nnslashdot-generate-active ()
499 (set-buffer nntp-server-buffer)
501 (dolist (elem nnslashdot-groups)
502 (when (numberp (cadr elem))
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 (provide 'nnslashdot)
512 ;;; nnslashdot.el ends here