1 ;;; nnwfm.el --- interfacing with a web forum
3 ;; Copyright (C) 2000, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
5 ;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
8 ;; This file is part of GNU Emacs.
10 ;; GNU Emacs is free software; you can redistribute it and/or modify
11 ;; it under the terms of the GNU General Public License as published by
12 ;; the Free Software Foundation; either version 2, or (at your option)
15 ;; GNU Emacs is distributed in the hope that it will be useful,
16 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 ;; GNU General Public License for more details.
20 ;; You should have received a copy of the GNU General Public License
21 ;; along with GNU Emacs; see the file COPYING. If not, write to the
22 ;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
23 ;; Boston, MA 02110-1301, USA.
27 ;; Note: You need to have `url' and `w3' installed for this
32 (eval-when-compile (require 'cl
))
42 (autoload 'w3-parse-buffer
"w3-parse")
46 (defvoo nnwfm-directory
(nnheader-concat gnus-directory
"wfm/")
47 "Where nnwfm will save its files.")
49 (defvoo nnwfm-address
""
50 "The address of the Ultimate bulletin board.")
52 ;;; Internal variables
54 (defvar nnwfm-groups-alist nil
)
55 (defvoo nnwfm-groups nil
)
56 (defvoo nnwfm-headers nil
)
57 (defvoo nnwfm-articles nil
)
58 (defvar nnwfm-table-regexp
59 "postings.*editpost\\|forumdisplay\\|Forum[0-9]+/HTML\\|getbio")
61 ;;; Interface functions
63 (nnoo-define-basics nnwfm
)
65 (deffoo nnwfm-retrieve-headers
(articles &optional group server fetch-old
)
66 (nnwfm-possibly-change-server group server
)
67 (unless gnus-nov-is-evil
68 (let* ((last (car (last articles
)))
71 (entry (assoc group nnwfm-groups
))
73 (topics (nth 4 entry
))
74 (mapping (nth 5 entry
))
75 (old-total (or (nth 6 entry
) 1))
76 (nnwfm-table-regexp "Thread.asp")
77 headers article subject score from date lines parent point
78 contents tinfo fetchers map elem a href garticles topic old-max
79 inc datel table string current-page total-contents pages
80 farticles forum-contents parse furl-fetched mmap farticle
81 thread-id tables hstuff bstuff time
)
83 (while (and (setq article
(car articles
))
86 (or (> article
(caar map
))
87 (< (cadar map
) (caar map
))))
89 (when (setq mmap
(car map
))
92 (<= article
(nth 1 mmap
)))
93 ;; Do we already have a fetcher for this topic?
94 (if (setq elem
(assq (nth 2 mmap
) fetchers
))
95 ;; Yes, so we just add the spec to the end.
96 (nconc elem
(list (cons article
97 (+ (nth 3 mmap
) (incf farticle
)))))
98 ;; No, so we add a new one.
99 (push (list (nth 2 mmap
)
101 (+ (nth 3 mmap
) (incf farticle
))))
104 (setq article
(car articles
)))))
105 ;; Now we have the mapping from/to Gnus/nnwfm article numbers,
106 ;; so we start fetching the topics that we need to satisfy the
110 (set-buffer nntp-server-buffer
)
112 (setq nnwfm-articles nil
)
113 (mm-with-unibyte-buffer
114 (dolist (elem fetchers
)
116 (setq subject
(nth 2 (assq (car elem
) topics
))
117 thread-id
(nth 0 (assq (car elem
) topics
)))
119 (concat nnwfm-address
120 (format "Item.asp?GroupID=%d&ThreadID=%d" sid
122 (goto-char (point-min))
128 (w3-parse-buffer (current-buffer)))))))))
129 (setq tables
(cdr (caddar (memq (assq 'div tables
) tables
))))
131 (dolist (table tables
)
132 (when (eq (car table
) 'table
)
133 (setq table
(caddar (caddar (caddr table
)))
134 hstuff
(delete ":link" (nnweb-text (car table
)))
135 bstuff
(car (caddar (cdr table
)))
138 (setq time
(nnwfm-date-to-time (nth 2 hstuff
)))
139 (push (list from time bstuff
) contents
))))
140 (setq contents
(nreverse contents
))
141 (dolist (art (cdr elem
))
142 (push (list (car art
)
143 (nth (1- (cdr art
)) contents
)
147 (sort nnwfm-articles
'car-less-than-car
))
148 ;; Now we have all the articles, conveniently in an alist
149 ;; where the key is the Gnus article number.
150 (dolist (articlef nnwfm-articles
)
151 (setq article
(nth 0 articlef
)
152 contents
(nth 1 articlef
)
153 subject
(nth 2 articlef
))
154 (setq from
(nth 0 contents
)
155 date
(message-make-date (nth 1 contents
)))
159 (make-full-mail-header
162 (concat "<" (number-to-string sid
) "%"
163 (number-to-string article
)
166 (/ (length (mapconcat 'identity
(nnweb-text (nth 2 contents
)) ""))
170 (setq nnwfm-headers
(sort headers
'car-less-than-car
))
172 (set-buffer nntp-server-buffer
)
173 (mm-with-unibyte-current-buffer
175 (dolist (header nnwfm-headers
)
176 (nnheader-insert-nov (cdr header
))))))
179 (deffoo nnwfm-request-group
(group &optional server dont-check
)
180 (nnwfm-possibly-change-server nil server
)
181 (when (not nnwfm-groups
)
182 (nnwfm-request-list))
184 (nnwfm-create-mapping group
))
185 (let ((elem (assoc group nnwfm-groups
)))
188 (nnheader-report 'nnwfm
"Group does not exist"))
190 (nnheader-report 'nnwfm
"Opened group %s" group
)
192 "211 %d %d %d %s\n" (cadr elem
) 1 (cadr elem
)
193 (prin1-to-string group
))))))
195 (deffoo nnwfm-request-close
()
196 (setq nnwfm-groups-alist nil
199 (deffoo nnwfm-request-article
(article &optional group server buffer
)
200 (nnwfm-possibly-change-server group server
)
201 (let ((contents (cdr (assq article nnwfm-articles
))))
202 (when (setq contents
(nth 2 (car contents
)))
204 (set-buffer (or buffer nntp-server-buffer
))
206 (nnweb-insert-html contents
)
207 (goto-char (point-min))
208 (insert "Content-Type: text/html\nMIME-Version: 1.0\n")
209 (let ((header (cdr (assq article nnwfm-headers
))))
210 (mm-with-unibyte-current-buffer
211 (nnheader-insert-header header
)))
212 (nnheader-report 'nnwfm
"Fetched article %s" article
)
213 (cons group article
)))))
215 (deffoo nnwfm-request-list
(&optional server
)
216 (nnwfm-possibly-change-server nil server
)
217 (mm-with-unibyte-buffer
219 (if (string-match "/$" nnwfm-address
)
220 (concat nnwfm-address
"Group.asp")
222 (let* ((nnwfm-table-regexp "Thread.asp")
223 (contents (w3-parse-buffer (current-buffer)))
224 sid elem description articles a href group forum
226 (dolist (row (cdr (nth 2 (car (nth 2 (nnwfm-find-forum-table
228 (setq row
(nth 2 row
))
229 (when (setq a
(nnweb-parse-find 'a row
))
230 (setq group
(car (last (nnweb-text a
)))
231 href
(cdr (assq 'href
(nth 1 a
))))
232 (setq description
(car (last (nnweb-text (nth 1 row
)))))
235 (gnus-replace-in-string
236 (car (last (nnweb-text (nth 3 row
)))) "," "")))
238 (string-match "GroupId=\\([0-9]+\\)" href
))
239 (setq forum
(string-to-number (match-string 1 href
)))
240 (if (setq elem
(assoc group nnwfm-groups
))
241 (setcar (cdr elem
) articles
)
242 (push (list group articles forum description nil nil nil nil
)
245 (nnwfm-generate-active)
248 (deffoo nnwfm-request-newgroups
(date &optional server
)
249 (nnwfm-possibly-change-server nil server
)
250 (nnwfm-generate-active)
253 (nnoo-define-skeleton nnwfm
)
255 ;;; Internal functions
257 (defun nnwfm-new-threads-p (group time
)
258 "See whether we want to fetch the threads for GROUP written before TIME."
259 (let ((old-time (nth 7 (assoc group nnwfm-groups
))))
261 (time-less-p old-time time
))))
263 (defun nnwfm-create-mapping (group)
264 (let* ((entry (assoc group nnwfm-groups
))
266 (topics (nth 4 entry
))
267 (mapping (nth 5 entry
))
268 (old-total (or (nth 6 entry
) 1))
269 (current-time (current-time))
270 (nnwfm-table-regexp "Thread.asp")
271 (furls (list (concat nnwfm-address
272 (format "Thread.asp?GroupId=%d" sid
))))
274 contents forum-contents a subject href
275 garticles topic tinfo old-max inc parse elem date
277 (mm-with-unibyte-buffer
280 (push (car furls
) fetched-urls
)
281 (mm-url-insert (pop furls
))
282 (goto-char (point-min))
283 (while (re-search-forward " wr(" nil t
)
285 (setq elem
(message-tokenize-header
286 (gnus-replace-in-string
294 (string-to-number (nth 1 elem
))
295 (gnus-replace-in-string (nth 2 elem
) "\"" "")
296 (string-to-number (nth 5 elem
)))
298 (when (re-search-forward "href=\"\\(Thread.*DateLast=\\([^\"]+\\)\\)"
300 (setq url
(match-string 1)
301 time
(nnwfm-date-to-time (gnus-url-unhex-string
303 (when (and (nnwfm-new-threads-p group time
)
307 (mm-url-decode-entities-string url
)))
310 ;; The main idea here is to map Gnus article numbers to
311 ;; nnwfm article numbers. Say there are three topics in
312 ;; this forum, the first with 4 articles, the seconds with 2,
313 ;; and the third with 1. Then this will translate into 7 Gnus
314 ;; article numbers, where 1-4 comes from the first topic, 5-6
315 ;; from the second and 7 from the third. Now, then next time
316 ;; the group is entered, there's 2 new articles in topic one
317 ;; and 1 in topic three. Then Gnus article number 8-9 be 5-6
318 ;; in topic one and 10 will be the 2 in topic three.
319 (dolist (elem (nreverse forum-contents
))
320 (setq subject
(nth 1 elem
)
322 garticles
(nth 2 elem
))
323 (if (setq tinfo
(assq topic topics
))
325 (setq old-max
(cadr tinfo
))
326 (setcar (cdr tinfo
) garticles
))
328 (push (list topic garticles subject
) topics
)
329 (setcar (nthcdr 4 entry
) topics
))
330 (when (not (= old-max garticles
))
331 (setq inc
(- garticles old-max
))
332 (setq mapping
(nconc mapping
335 old-total
(1- (incf old-total inc
))
336 topic
(1+ old-max
)))))
338 (setcar (nthcdr 5 entry
) mapping
)
339 (setcar (nthcdr 6 entry
) old-total
))))
340 (setcar (nthcdr 7 entry
) current-time
)
341 (setcar (nthcdr 1 entry
) (1- old-total
))
345 (defun nnwfm-possibly-change-server (&optional group server
)
348 (not (nnwfm-server-opened server
)))
349 (nnwfm-open-server server
))
350 (unless nnwfm-groups-alist
352 (setq nnwfm-groups
(cdr (assoc nnwfm-address
353 nnwfm-groups-alist
)))))
355 (deffoo nnwfm-open-server
(server &optional defs connectionless
)
356 (nnheader-init-server-buffer)
357 (if (nnwfm-server-opened server
)
359 (unless (assq 'nnwfm-address defs
)
360 (setq defs
(append defs
(list (list 'nnwfm-address server
)))))
361 (nnoo-change-server 'nnwfm server defs
)))
363 (defun nnwfm-read-groups ()
364 (setq nnwfm-groups-alist nil
)
365 (let ((file (expand-file-name "groups" nnwfm-directory
)))
366 (when (file-exists-p file
)
367 (mm-with-unibyte-buffer
368 (insert-file-contents file
)
369 (goto-char (point-min))
370 (setq nnwfm-groups-alist
(read (current-buffer)))))))
372 (defun nnwfm-write-groups ()
373 (setq nnwfm-groups-alist
374 (delq (assoc nnwfm-address nnwfm-groups-alist
)
376 (push (cons nnwfm-address nnwfm-groups
)
378 (with-temp-file (expand-file-name "groups" nnwfm-directory
)
379 (prin1 nnwfm-groups-alist
(current-buffer))))
381 (defun nnwfm-init (server)
382 "Initialize buffers and such."
383 (unless (file-exists-p nnwfm-directory
)
384 (gnus-make-directory nnwfm-directory
)))
386 (defun nnwfm-generate-active ()
388 (set-buffer nntp-server-buffer
)
390 (dolist (elem nnwfm-groups
)
391 (insert (prin1-to-string (car elem
))
392 " " (number-to-string (cadr elem
)) " 1 y\n"))))
394 (defun nnwfm-find-forum-table (contents)
396 (nnwfm-find-forum-table-1 contents
)))
398 (defun nnwfm-find-forum-table-1 (contents)
399 (dolist (element contents
)
400 (unless (stringp element
)
401 (when (and (eq (car element
) 'table
)
402 (nnwfm-forum-table-p element
))
403 (throw 'found element
))
404 (when (nth 2 element
)
405 (nnwfm-find-forum-table-1 (nth 2 element
))))))
407 (defun nnwfm-forum-table-p (parse)
408 (when (not (apply 'gnus-or
411 (nnweb-parse-find 'table p
))
413 (let ((href (cdr (assq 'href
(nth 1 (nnweb-parse-find 'a parse
20)))))
415 (when (and href
(string-match nnwfm-table-regexp href
))
418 (defun nnwfm-date-to-time (date)
419 (let ((time (mapcar #'string-to-number
(split-string date
"[\\.\\+ :]"))))
420 (encode-time 0 (nth 4 time
) (nth 3 time
)
421 (nth 0 time
) (nth 1 time
)
422 (if (< (nth 2 time
) 70)
423 (+ 2000 (nth 2 time
))
424 (+ 1900 (nth 2 time
))))))
429 ;; coding: iso-8859-1
432 ;;; arch-tag: d813966a-4211-4557-ad11-d1ac2bc86536
433 ;;; nnwfm.el ends here