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))
41 (nnoo-declare nnslashdot)
43 (defvoo nnslashdot-directory (nnheader-concat gnus-directory "slashdot/")
44 "Where nnslashdot will save its files.")
46 (defvoo nnslashdot-active-url "http://slashdot.org/search.pl?section=&min=%d"
47 "Where nnslashdot will fetch the active file from.")
49 (defvoo nnslashdot-comments-url "http://slashdot.org/comments.pl?sid=%s&threshold=%d&commentsort=%d&mode=flat&startat=%d"
50 "Where nnslashdot will fetch comments from.")
52 (defvoo nnslashdot-article-url
53 "http://slashdot.org/article.pl?sid=%s&mode=nocomment"
54 "Where nnslashdot will fetch the article from.")
56 (defvoo nnslashdot-backslash-url "http://slashdot.org/slashdot.xml"
57 "Where nnslashdot will fetch the stories from.")
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
105 (nnslashdot-sid-strip sid)) t)
106 (goto-char (point-min))
107 (re-search-forward "Posted by[ \t\r\n]+")
108 (when (looking-at "\\(<a[^>]+>\\)?[ \t\r\n]*\\([^<\r\n]+\\)")
109 (setq from (mm-url-decode-entities-string (match-string 2))))
110 (search-forward "on ")
111 (setq date (nnslashdot-date-to-date
112 (buffer-substring (point) (1- (search-forward "<")))))
113 (setq lines (/ (- (point)
114 (progn (forward-line 1) (point)))
119 (make-full-mail-header
121 (concat "<" (nnslashdot-sid-strip sid) "%1@slashdot>")
124 (setq start (if nnslashdot-threaded 2 (pop articles))))
125 (while (and start (<= start last))
126 (setq point (goto-char (point-max)))
128 (format nnslashdot-comments-url
129 (nnslashdot-sid-strip 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 "<" (nnslashdot-sid-strip sid) "%" cid "@slashdot>")
188 (concat "<" (nnslashdot-sid-strip sid) "%"
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 "< [ \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 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))
306 (while (search-forward "<story>" nil t)
307 (narrow-to-region (point) (search-forward "</story>"))
308 (goto-char (point-min))
309 (re-search-forward "<title>\\([^<]+\\)</title>")
311 (mm-url-decode-entities-string (match-string 1)))
312 (re-search-forward "<url>\\([^<]+\\)</url>")
313 (setq sid (match-string 1))
314 (string-match "sid=\\([0-9/]+\\)\\(.shtml\\|$\\)" sid)
315 (setq sid (match-string 1 sid))
316 (re-search-forward "<comments>\\([^<]+\\)</comments>")
317 (setq articles (string-to-number (match-string 1)))
318 (setq gname (concat description " (" sid ")"))
319 (if (setq elem (assoc gname nnslashdot-groups))
320 (setcar (cdr elem) articles)
321 (push (list gname articles sid (current-time) nil)
323 (goto-char (point-max))
325 ;; Then do the older groups.
326 (while (> (- nnslashdot-group-number number) 0)
327 (mm-with-unibyte-buffer
328 (let ((case-fold-search t))
329 (mm-url-insert (format nnslashdot-active-url number) t)
330 (goto-char (point-min))
331 (while (re-search-forward
332 "article.pl\\?sid=\\([^&]+\\).*<b>\\([^<]+\\)</b>"
334 (setq sid (match-string 1)
336 (mm-url-decode-entities-string (match-string 2)))
338 (when (re-search-forward "<b>\\([0-9]+\\)</b>" nil t)
339 (setq articles (string-to-number (match-string 1))))
340 (setq gname (concat description " (" sid ")"))
341 (if (setq elem (assoc gname nnslashdot-groups))
342 (setcar (cdr elem) articles)
343 (push (list gname articles sid (current-time) nil)
344 nnslashdot-groups)))))
346 (search-failed (nnslashdot-lose why)))
347 (nnslashdot-write-groups)
348 (nnslashdot-generate-active)
351 (deffoo nnslashdot-request-newgroups (date &optional server)
352 (nnslashdot-possibly-change-server nil server)
353 (nnslashdot-generate-active)
356 (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 (defalias 'nnslashdot-sid-strip 'identity)
507 (provide 'nnslashdot)
509 ;;; nnslashdot.el ends here