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))
43 ;; Report failure to find w3 at load time if appropriate.
44 (eval '(require 'nnweb))
46 (nnoo-declare nnslashdot)
48 (defvoo nnslashdot-directory (nnheader-concat gnus-directory "slashdot/")
49 "Where nnslashdot will save its files.")
51 (defvoo nnslashdot-active-url "http://slashdot.org/search.pl?section=&min=%d"
52 "Where nnslashdot will fetch the active file from.")
54 (defvoo nnslashdot-comments-url "http://slashdot.org/comments.pl?sid=%s&threshold=%d&commentsort=%d&mode=flat&startat=%d"
55 "Where nnslashdot will fetch comments from.")
57 (defvoo nnslashdot-article-url
58 "http://slashdot.org/article.pl?sid=%s&mode=nocomment"
59 "Where nnslashdot will fetch the article from.")
61 (defvoo nnslashdot-backslash-url "http://slashdot.org/slashdot.xml"
62 "Where nnslashdot will fetch the stories from.")
64 (defvoo nnslashdot-threshold -1
65 "The article threshold.")
67 (defvoo nnslashdot-threaded t
68 "Whether the nnslashdot groups should be threaded or not.")
70 (defvoo nnslashdot-group-number 0
71 "The number of non-fresh groups to keep updated.")
73 (defvoo nnslashdot-login-name ""
74 "The login name to use when posting.")
76 (defvoo nnslashdot-password ""
77 "The password to use when posting.")
79 ;;; Internal variables
81 (defvar nnslashdot-groups nil)
82 (defvar nnslashdot-buffer nil)
83 (defvar nnslashdot-headers nil)
85 ;;; Interface functions
87 (nnoo-define-basics nnslashdot)
89 (deffoo nnslashdot-retrieve-headers (articles &optional group server fetch-old)
90 (nnslashdot-possibly-change-server group server)
92 (unless gnus-nov-is-evil
93 (nnslashdot-retrieve-headers-1 articles group))
94 (search-failed (nnslashdot-lose why))))
96 (deffoo nnslashdot-retrieve-headers-1 (articles group)
97 (let* ((last (car (last articles)))
98 (start (if nnslashdot-threaded 1 (pop articles)))
99 (entry (assoc group nnslashdot-groups))
102 headers article subject score from date lines parent point cid
105 (set-buffer nnslashdot-buffer)
106 (let ((case-fold-search t))
109 (nnweb-insert (format nnslashdot-article-url
110 (nnslashdot-sid-strip sid)) t)
111 (goto-char (point-min))
112 (re-search-forward "Posted by[ \t\r\n]+")
113 (when (looking-at "\\(<a[^>]+>\\)?[ \t\r\n]*\\([^<\r\n]+\\)")
114 (setq from (nnweb-decode-entities-string (match-string 2))))
115 (search-forward "on ")
116 (setq date (nnslashdot-date-to-date
117 (buffer-substring (point) (1- (search-forward "<")))))
118 (setq lines (/ (- (point)
119 (progn (forward-line 1) (point)))
124 (make-full-mail-header
126 (concat "<" (nnslashdot-sid-strip sid) "%1@slashdot>")
129 (setq start (if nnslashdot-threaded 2 (pop articles))))
130 (while (and start (<= start last))
131 (setq point (goto-char (point-max)))
133 (format nnslashdot-comments-url
134 (nnslashdot-sid-strip sid)
135 nnslashdot-threshold 0 (- start 2))
137 (when (and nnslashdot-threaded first-comments)
138 (setq first-comments nil)
139 (goto-char (point-max))
140 (while (re-search-backward "startat=\\([0-9]+\\)" nil t)
141 (setq s (string-to-number (match-string 1)))
142 (unless (memq s startats)
144 (setq startats (sort startats '<)))
145 (setq article (if (and article (< start article)) article start))
147 (while (re-search-forward
148 "<a name=\"\\([0-9]+\\)\"><\\(b\\|H4\\)>\\([^<]+\\)</\\(b\\|H4\\)>.*score:\\([^)]+\\))"
150 (setq cid (match-string 1)
151 subject (match-string 3)
152 score (match-string 5))
153 (unless (assq article (nth 4 entry))
154 (setcar (nthcdr 4 entry) (cons (cons article cid) (nth 4 entry)))
156 (when (string-match "^Re: *" subject)
157 (setq subject (concat "Re: " (substring subject (match-end 0)))))
158 (setq subject (nnweb-decode-entities-string subject))
159 (search-forward "<BR>")
161 "by[ \t\n]+<a[^>]+>\\([^<]+\\)</a>[ \t\n]*(\\(<[^>]+>\\)*\\([^<>)]+\\))")
163 (goto-char (- (match-end 0) 5))
165 (nnweb-decode-entities-string (match-string 1))
166 " <" (match-string 3) ">")))
168 (when (looking-at "by \\([^<>]*\\) on ")
169 (goto-char (- (match-end 0) 5))
170 (setq from (nnweb-decode-entities-string (match-string 1)))))
171 (search-forward " on ")
173 (nnslashdot-date-to-date
174 (buffer-substring (point) (progn (skip-chars-forward "^()<>\n\r") (point)))))
175 (setq lines (/ (abs (- (search-forward "<td")
176 (search-forward "</td>")))
179 (re-search-forward ".*cid=\\([0-9]+\\)\">Parent</A>" nil t))
181 (setq parent (match-string 1))
182 (when (string= parent "0")
187 (make-full-mail-header
189 (concat subject " (" score ")")
191 (concat "<" (nnslashdot-sid-strip sid) "%" cid "@slashdot>")
193 (concat "<" (nnslashdot-sid-strip sid) "%"
198 (while (and articles (<= (car articles) article))
200 (setq article (1+ article)))
201 (if nnslashdot-threaded
203 (setq start (pop startats))
204 (if start (setq start (+ start 2))))
205 (setq start (pop articles))))))
206 (if changed (nnslashdot-write-groups))
207 (setq nnslashdot-headers (sort headers 'car-less-than-car))
209 (set-buffer nntp-server-buffer)
211 (mm-with-unibyte-current-buffer
212 (dolist (header nnslashdot-headers)
213 (nnheader-insert-nov (cdr header)))))
216 (deffoo nnslashdot-request-group (group &optional server dont-check)
217 (nnslashdot-possibly-change-server nil server)
218 (let ((elem (assoc group nnslashdot-groups)))
221 (nnheader-report 'nnslashdot "Group does not exist"))
223 (nnheader-report 'nnslashdot "Opened group %s" group)
225 "211 %d %d %d %s\n" (cadr elem) 1 (cadr elem)
226 (prin1-to-string group))))))
228 (deffoo nnslashdot-close-group (group &optional server)
229 (nnslashdot-possibly-change-server group server)
230 (when (gnus-buffer-live-p nnslashdot-buffer)
232 (set-buffer nnslashdot-buffer)
233 (kill-buffer nnslashdot-buffer)))
236 (deffoo nnslashdot-request-article (article &optional group server buffer)
237 (nnslashdot-possibly-change-server group server)
241 (set-buffer nnslashdot-buffer)
242 (let ((case-fold-search t))
243 (goto-char (point-min))
244 (when (and (stringp article)
245 (string-match "%\\([0-9]+\\)@" article))
246 (setq cid (match-string 1 article))
247 (let ((map (nth 4 (assoc group nnslashdot-groups))))
249 (if (equal (cdar map) cid)
250 (setq article (caar map)
252 (setq map (cdr map))))))
253 (when (numberp article)
258 (search-forward "<BR>")
264 "< [ \t\r\n]*<A HREF=\"\\(\\(http:\\)?//slashdot\\.org\\)?/article")
265 (match-beginning 0)))))
266 (setq cid (cdr (assq article
267 (nth 4 (assoc group nnslashdot-groups)))))
268 (search-forward (format "<a name=\"%s\">" cid))
271 (re-search-forward "<td[^>]*>")
272 (search-forward "</td>")))))))
273 (search-failed (nnslashdot-lose why)))
277 (set-buffer (or buffer nntp-server-buffer))
279 (mm-with-unibyte-current-buffer
281 (goto-char (point-min))
282 (while (re-search-forward "\\(<br>\r?\\)+" nil t)
283 (replace-match "<p>" t t))
284 (goto-char (point-min))
285 (insert "Content-Type: text/html\nMIME-Version: 1.0\n")
286 (insert "Newsgroups: " (caddr (assoc group nnslashdot-groups))
288 (let ((header (cdr (assq article nnslashdot-headers))))
289 (nnheader-insert-header header))
290 (nnheader-report 'nnslashdot "Fetched article %s" article))
291 (cons group article)))))
293 (deffoo nnslashdot-close-server (&optional server)
294 (when (and (nnslashdot-server-opened server)
295 (gnus-buffer-live-p nnslashdot-buffer))
297 (set-buffer nnslashdot-buffer)
298 (kill-buffer nnslashdot-buffer)))
299 (nnoo-close-server 'nnslashdot server))
301 (deffoo nnslashdot-request-list (&optional server)
302 (nnslashdot-possibly-change-server nil server)
304 sid elem description articles gname)
306 ;; First we do the Ultramode to get info on all the latest groups.
308 (mm-with-unibyte-buffer
309 (nnweb-insert nnslashdot-backslash-url t)
310 (goto-char (point-min))
311 (while (search-forward "<story>" nil t)
312 (narrow-to-region (point) (search-forward "</story>"))
313 (goto-char (point-min))
314 (re-search-forward "<title>\\([^<]+\\)</title>")
316 (nnweb-decode-entities-string (match-string 1)))
317 (re-search-forward "<url>\\([^<]+\\)</url>")
318 (setq sid (match-string 1))
319 (string-match "sid=\\([0-9/]+\\)\\(.shtml\\|$\\)" sid)
320 (setq sid (match-string 1 sid))
321 (re-search-forward "<comments>\\([^<]+\\)</comments>")
322 (setq articles (string-to-number (match-string 1)))
323 (setq gname (concat description " (" sid ")"))
324 (if (setq elem (assoc gname nnslashdot-groups))
325 (setcar (cdr elem) articles)
326 (push (list gname articles sid (current-time) nil)
328 (goto-char (point-max))
330 ;; Then do the older groups.
331 (while (> (- nnslashdot-group-number number) 0)
332 (mm-with-unibyte-buffer
333 (let ((case-fold-search t))
334 (nnweb-insert (format nnslashdot-active-url number) t)
335 (goto-char (point-min))
336 (while (re-search-forward
337 "article.pl\\?sid=\\([^&]+\\).*<b>\\([^<]+\\)</b>"
339 (setq sid (match-string 1)
341 (nnweb-decode-entities-string (match-string 2)))
343 (when (re-search-forward "<b>\\([0-9]+\\)</b>" nil t)
344 (setq articles (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 (nnslashdot-sid-strip (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 (defalias 'nnslashdot-sid-strip 'identity)
516 (provide 'nnslashdot)
518 ;;; nnslashdot.el ends here