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eec82323 | 1 | ;;; nnweb.el --- retrieving articles via web search engines |
e84b4b86 TTN |
2 | |
3 | ;; Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, | |
4 | ;; 2004, 2005 Free Software Foundation, Inc. | |
eec82323 | 5 | |
6748645f | 6 | ;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org> |
eec82323 LMI |
7 | ;; Keywords: news |
8 | ||
9 | ;; This file is part of GNU Emacs. | |
10 | ||
11 | ;; GNU Emacs is free software; you can redistribute it and/or modify | |
12 | ;; it under the terms of the GNU General Public License as published by | |
13 | ;; the Free Software Foundation; either version 2, or (at your option) | |
14 | ;; any later version. | |
15 | ||
16 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
17 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | ;; GNU General Public License for more details. | |
20 | ||
21 | ;; You should have received a copy of the GNU General Public License | |
22 | ;; along with GNU Emacs; see the file COPYING. If not, write to the | |
3a35cf56 LK |
23 | ;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
24 | ;; Boston, MA 02110-1301, USA. | |
eec82323 LMI |
25 | |
26 | ;;; Commentary: | |
27 | ||
23f87bed | 28 | ;; Note: You need to have `w3' installed for some functions to work. |
eec82323 | 29 | |
4a2358e9 MB |
30 | ;; FIXME: Due to changes in the HTML output of Google Groups and Gmane, stuff |
31 | ;; related to web groups (gnus-group-make-web-group) doesn't work anymore. | |
32 | ||
33 | ;; Fetching an article by MID (cf. gnus-refer-article-method) over Google | |
34 | ;; Groups should work. | |
35 | ||
eec82323 LMI |
36 | ;;; Code: |
37 | ||
5ab7173c RS |
38 | (eval-when-compile (require 'cl)) |
39 | ||
eec82323 LMI |
40 | (require 'nnoo) |
41 | (require 'message) | |
42 | (require 'gnus-util) | |
43 | (require 'gnus) | |
eec82323 | 44 | (require 'nnmail) |
16409b0b | 45 | (require 'mm-util) |
23f87bed MB |
46 | (require 'mm-url) |
47 | (eval-and-compile | |
0d5dc4a5 | 48 | (ignore-errors |
23f87bed MB |
49 | (require 'url))) |
50 | (autoload 'w3-parse-buffer "w3-parse") | |
eec82323 LMI |
51 | |
52 | (nnoo-declare nnweb) | |
53 | ||
54 | (defvoo nnweb-directory (nnheader-concat gnus-directory "nnweb/") | |
55 | "Where nnweb will save its files.") | |
56 | ||
95fa1ff7 | 57 | (defvoo nnweb-type 'google |
6748645f | 58 | "What search engine type is being used. |
23f87bed | 59 | Valid types include `google', `dejanews', and `gmane'.") |
eec82323 | 60 | |
16409b0b | 61 | (defvar nnweb-type-definition |
23f87bed | 62 | |
4a2358e9 MB |
63 | (id . "http://www.google.com/groups?as_umsgid=%s&hl=en&dmode=source") |
64 | (article . nnweb-google-wash-article) | |
95fa1ff7 SZ |
65 | (reference . identity) |
66 | (map . nnweb-google-create-mapping) | |
67 | (search . nnweb-google-search) | |
4a2358e9 MB |
68 | (address . "http://groups.google.com/groups") |
69 | (base . "http://groups.google.com") | |
95fa1ff7 SZ |
70 | (identifier . nnweb-google-identity)) |
71 | (dejanews ;; alias of google | |
16409b0b | 72 | (article . ignore) |
95fa1ff7 | 73 | (id . "http://groups.google.com/groups?selm=%s&output=gplain") |
95fa1ff7 SZ |
74 | (reference . identity) |
75 | (map . nnweb-google-create-mapping) | |
76 | (search . nnweb-google-search) | |
77 | (address . "http://groups.google.com/groups") | |
5f5475ac | 78 | (base . "http://groups.google.com") |
95fa1ff7 | 79 | (identifier . nnweb-google-identity)) |
23f87bed MB |
80 | (gmane |
81 | (article . nnweb-gmane-wash-article) | |
82 | (id . "http://gmane.org/view.php?group=%s") | |
83 | (reference . identity) | |
84 | (map . nnweb-gmane-create-mapping) | |
85 | (search . nnweb-gmane-search) | |
86 | (address . "http://gmane.org/") | |
87 | (identifier . nnweb-gmane-identity))) | |
eec82323 LMI |
88 | "Type-definition alist.") |
89 | ||
90 | (defvoo nnweb-search nil | |
23f87bed | 91 | "Search string to feed to Google.") |
eec82323 | 92 | |
6748645f | 93 | (defvoo nnweb-max-hits 999 |
eec82323 LMI |
94 | "Maximum number of hits to display.") |
95 | ||
96 | (defvoo nnweb-ephemeral-p nil | |
97 | "Whether this nnweb server is ephemeral.") | |
98 | ||
99 | ;;; Internal variables | |
100 | ||
101 | (defvoo nnweb-articles nil) | |
102 | (defvoo nnweb-buffer nil) | |
103 | (defvoo nnweb-group-alist nil) | |
104 | (defvoo nnweb-group nil) | |
105 | (defvoo nnweb-hashtb nil) | |
106 | ||
107 | ;;; Interface functions | |
108 | ||
109 | (nnoo-define-basics nnweb) | |
110 | ||
111 | (deffoo nnweb-retrieve-headers (articles &optional group server fetch-old) | |
112 | (nnweb-possibly-change-server group server) | |
113 | (save-excursion | |
114 | (set-buffer nntp-server-buffer) | |
115 | (erase-buffer) | |
116 | (let (article header) | |
16409b0b GM |
117 | (mm-with-unibyte-current-buffer |
118 | (while (setq article (pop articles)) | |
119 | (when (setq header (cadr (assq article nnweb-articles))) | |
120 | (nnheader-insert-nov header)))) | |
eec82323 LMI |
121 | 'nov))) |
122 | ||
123 | (deffoo nnweb-request-scan (&optional group server) | |
124 | (nnweb-possibly-change-server group server) | |
95fa1ff7 SZ |
125 | (if nnweb-ephemeral-p |
126 | (setq nnweb-hashtb (gnus-make-hashtable 4095))) | |
eec82323 LMI |
127 | (funcall (nnweb-definition 'map)) |
128 | (unless nnweb-ephemeral-p | |
129 | (nnweb-write-active) | |
130 | (nnweb-write-overview group))) | |
131 | ||
132 | (deffoo nnweb-request-group (group &optional server dont-check) | |
133 | (nnweb-possibly-change-server nil server) | |
134 | (when (and group | |
135 | (not (equal group nnweb-group)) | |
136 | (not nnweb-ephemeral-p)) | |
95fa1ff7 SZ |
137 | (setq nnweb-group group |
138 | nnweb-articles nil) | |
eec82323 | 139 | (let ((info (assoc group nnweb-group-alist))) |
16409b0b | 140 | (when info |
16409b0b GM |
141 | (setq nnweb-type (nth 2 info)) |
142 | (setq nnweb-search (nth 3 info)) | |
143 | (unless dont-check | |
144 | (nnweb-read-overview group))))) | |
eec82323 LMI |
145 | (cond |
146 | ((not nnweb-articles) | |
147 | (nnheader-report 'nnweb "No matching articles")) | |
148 | (t | |
149 | (let ((active (if nnweb-ephemeral-p | |
150 | (cons (caar nnweb-articles) | |
151 | (caar (last nnweb-articles))) | |
152 | (cadr (assoc group nnweb-group-alist))))) | |
153 | (nnheader-report 'nnweb "Opened group %s" group) | |
154 | (nnheader-insert | |
155 | "211 %d %d %d %s\n" (length nnweb-articles) | |
156 | (car active) (cdr active) group))))) | |
157 | ||
158 | (deffoo nnweb-close-group (group &optional server) | |
159 | (nnweb-possibly-change-server group server) | |
160 | (when (gnus-buffer-live-p nnweb-buffer) | |
161 | (save-excursion | |
162 | (set-buffer nnweb-buffer) | |
163 | (set-buffer-modified-p nil) | |
164 | (kill-buffer nnweb-buffer))) | |
165 | t) | |
166 | ||
167 | (deffoo nnweb-request-article (article &optional group server buffer) | |
168 | (nnweb-possibly-change-server group server) | |
169 | (save-excursion | |
170 | (set-buffer (or buffer nntp-server-buffer)) | |
171 | (let* ((header (cadr (assq article nnweb-articles))) | |
172 | (url (and header (mail-header-xref header)))) | |
173 | (when (or (and url | |
16409b0b | 174 | (mm-with-unibyte-current-buffer |
23f87bed | 175 | (mm-url-insert url))) |
eec82323 LMI |
176 | (and (stringp article) |
177 | (nnweb-definition 'id t) | |
178 | (let ((fetch (nnweb-definition 'id)) | |
95fa1ff7 | 179 | art active) |
eec82323 LMI |
180 | (when (string-match "^<\\(.*\\)>$" article) |
181 | (setq art (match-string 1 article))) | |
95fa1ff7 SZ |
182 | (when (and fetch art) |
183 | (setq url (format fetch art)) | |
184 | (mm-with-unibyte-current-buffer | |
23f87bed | 185 | (mm-url-insert url)) |
95fa1ff7 SZ |
186 | (if (nnweb-definition 'reference t) |
187 | (setq article | |
188 | (funcall (nnweb-definition | |
189 | 'reference) article))))))) | |
eec82323 | 190 | (unless nnheader-callback-function |
95fa1ff7 | 191 | (funcall (nnweb-definition 'article))) |
eec82323 | 192 | (nnheader-report 'nnweb "Fetched article %s" article) |
16409b0b | 193 | (cons group (and (numberp article) article)))))) |
eec82323 LMI |
194 | |
195 | (deffoo nnweb-close-server (&optional server) | |
196 | (when (and (nnweb-server-opened server) | |
197 | (gnus-buffer-live-p nnweb-buffer)) | |
198 | (save-excursion | |
199 | (set-buffer nnweb-buffer) | |
200 | (set-buffer-modified-p nil) | |
201 | (kill-buffer nnweb-buffer))) | |
202 | (nnoo-close-server 'nnweb server)) | |
203 | ||
204 | (deffoo nnweb-request-list (&optional server) | |
205 | (nnweb-possibly-change-server nil server) | |
206 | (save-excursion | |
207 | (set-buffer nntp-server-buffer) | |
208 | (nnmail-generate-active nnweb-group-alist) | |
209 | t)) | |
210 | ||
211 | (deffoo nnweb-request-update-info (group info &optional server) | |
16409b0b | 212 | (nnweb-possibly-change-server group server)) |
eec82323 LMI |
213 | |
214 | (deffoo nnweb-asynchronous-p () | |
23f87bed | 215 | nil) |
eec82323 LMI |
216 | |
217 | (deffoo nnweb-request-create-group (group &optional server args) | |
218 | (nnweb-possibly-change-server nil server) | |
219 | (nnweb-request-delete-group group) | |
220 | (push `(,group ,(cons 1 0) ,@args) nnweb-group-alist) | |
221 | (nnweb-write-active) | |
222 | t) | |
223 | ||
224 | (deffoo nnweb-request-delete-group (group &optional force server) | |
225 | (nnweb-possibly-change-server group server) | |
16409b0b GM |
226 | (gnus-pull group nnweb-group-alist t) |
227 | (nnweb-write-active) | |
eec82323 LMI |
228 | (gnus-delete-file (nnweb-overview-file group)) |
229 | t) | |
230 | ||
231 | (nnoo-define-skeleton nnweb) | |
232 | ||
233 | ;;; Internal functions | |
234 | ||
235 | (defun nnweb-read-overview (group) | |
236 | "Read the overview of GROUP and build the map." | |
237 | (when (file-exists-p (nnweb-overview-file group)) | |
16409b0b | 238 | (mm-with-unibyte-buffer |
eec82323 LMI |
239 | (nnheader-insert-file-contents (nnweb-overview-file group)) |
240 | (goto-char (point-min)) | |
241 | (let (header) | |
242 | (while (not (eobp)) | |
243 | (setq header (nnheader-parse-nov)) | |
244 | (forward-line 1) | |
245 | (push (list (mail-header-number header) | |
246 | header (mail-header-xref header)) | |
247 | nnweb-articles) | |
248 | (nnweb-set-hashtb header (car nnweb-articles))))))) | |
249 | ||
250 | (defun nnweb-write-overview (group) | |
251 | "Write the overview file for GROUP." | |
16409b0b | 252 | (with-temp-file (nnweb-overview-file group) |
eec82323 LMI |
253 | (let ((articles nnweb-articles)) |
254 | (while articles | |
255 | (nnheader-insert-nov (cadr (pop articles))))))) | |
256 | ||
257 | (defun nnweb-set-hashtb (header data) | |
258 | (gnus-sethash (nnweb-identifier (mail-header-xref header)) | |
259 | data nnweb-hashtb)) | |
260 | ||
261 | (defun nnweb-get-hashtb (url) | |
262 | (gnus-gethash (nnweb-identifier url) nnweb-hashtb)) | |
263 | ||
264 | (defun nnweb-identifier (ident) | |
265 | (funcall (nnweb-definition 'identifier) ident)) | |
266 | ||
267 | (defun nnweb-overview-file (group) | |
268 | "Return the name of the overview file of GROUP." | |
269 | (nnheader-concat nnweb-directory group ".overview")) | |
270 | ||
271 | (defun nnweb-write-active () | |
272 | "Save the active file." | |
16409b0b GM |
273 | (gnus-make-directory nnweb-directory) |
274 | (with-temp-file (nnheader-concat nnweb-directory "active") | |
eec82323 LMI |
275 | (prin1 `(setq nnweb-group-alist ',nnweb-group-alist) (current-buffer)))) |
276 | ||
277 | (defun nnweb-read-active () | |
278 | "Read the active file." | |
279 | (load (nnheader-concat nnweb-directory "active") t t t)) | |
280 | ||
281 | (defun nnweb-definition (type &optional noerror) | |
282 | "Return the definition of TYPE." | |
283 | (let ((def (cdr (assq type (assq nnweb-type nnweb-type-definition))))) | |
284 | (when (and (not def) | |
285 | (not noerror)) | |
286 | (error "Undefined definition %s" type)) | |
287 | def)) | |
288 | ||
289 | (defun nnweb-possibly-change-server (&optional group server) | |
290 | (nnweb-init server) | |
291 | (when server | |
292 | (unless (nnweb-server-opened server) | |
293 | (nnweb-open-server server))) | |
294 | (unless nnweb-group-alist | |
295 | (nnweb-read-active)) | |
95fa1ff7 SZ |
296 | (unless nnweb-hashtb |
297 | (setq nnweb-hashtb (gnus-make-hashtable 4095))) | |
eec82323 LMI |
298 | (when group |
299 | (when (and (not nnweb-ephemeral-p) | |
95fa1ff7 | 300 | (equal group nnweb-group)) |
eec82323 LMI |
301 | (nnweb-request-group group nil t)))) |
302 | ||
303 | (defun nnweb-init (server) | |
304 | "Initialize buffers and such." | |
305 | (unless (gnus-buffer-live-p nnweb-buffer) | |
306 | (setq nnweb-buffer | |
307 | (save-excursion | |
16409b0b GM |
308 | (mm-with-unibyte |
309 | (nnheader-set-temp-buffer | |
310 | (format " *nnweb %s %s %s*" | |
311 | nnweb-type nnweb-search server)) | |
312 | (current-buffer)))))) | |
eec82323 | 313 | |
95fa1ff7 | 314 | ;;; |
4a2358e9 | 315 | ;;; groups.google.com |
95fa1ff7 SZ |
316 | ;;; |
317 | ||
318 | (defun nnweb-google-wash-article () | |
4a2358e9 MB |
319 | ;; We have Google's masked e-mail addresses here. :-/ |
320 | (let ((case-fold-search t)) | |
95fa1ff7 | 321 | (goto-char (point-min)) |
4a2358e9 MB |
322 | (delete-region (point-min) |
323 | (1+ (re-search-forward "^<pre>" nil t))) | |
95fa1ff7 | 324 | (goto-char (point-min)) |
4a2358e9 MB |
325 | (delete-region (- (re-search-forward "^</pre>" nil t) (length "</pre>")) |
326 | (point-max)) | |
327 | (mm-url-decode-entities))) | |
95fa1ff7 SZ |
328 | |
329 | (defun nnweb-google-parse-1 (&optional Message-ID) | |
330 | (let ((i 0) | |
331 | (case-fold-search t) | |
332 | (active (cadr (assoc nnweb-group nnweb-group-alist))) | |
333 | Subject Score Date Newsgroups From | |
334 | map url mid) | |
335 | (unless active | |
336 | (push (list nnweb-group (setq active (cons 1 0)) | |
337 | nnweb-type nnweb-search) | |
338 | nnweb-group-alist)) | |
339 | ;; Go through all the article hits on this page. | |
340 | (goto-char (point-min)) | |
341 | (while (re-search-forward | |
342 | "a href=/groups\\(\\?[^ \">]*selm=\\([^ &\">]+\\)\\)" nil t) | |
343 | (setq mid (match-string 2) | |
debad045 | 344 | url (format |
5f5475ac | 345 | (nnweb-definition 'id) mid)) |
95fa1ff7 SZ |
346 | (narrow-to-region (search-forward ">" nil t) |
347 | (search-forward "</a>" nil t)) | |
23f87bed MB |
348 | (mm-url-remove-markup) |
349 | (mm-url-decode-entities) | |
95fa1ff7 SZ |
350 | (setq Subject (buffer-string)) |
351 | (goto-char (point-max)) | |
352 | (widen) | |
23f87bed | 353 | (forward-line 2) |
95fa1ff7 SZ |
354 | (when (looking-at "<br><font[^>]+>") |
355 | (goto-char (match-end 0))) | |
356 | (if (not (looking-at "<a[^>]+>")) | |
357 | (skip-chars-forward " \t") | |
358 | (narrow-to-region (point) | |
359 | (search-forward "</a>" nil t)) | |
23f87bed MB |
360 | (mm-url-remove-markup) |
361 | (mm-url-decode-entities) | |
95fa1ff7 SZ |
362 | (setq Newsgroups (buffer-string)) |
363 | (goto-char (point-max)) | |
364 | (widen) | |
365 | (skip-chars-forward "- \t")) | |
366 | (when (looking-at | |
23f87bed MB |
367 | "\\([0-9]+\\)[/ ]\\([A-Za-z]+\\)[/ ]\\([0-9]+\\)[ \t]*by[ \t]*\\([^<]*\\) - <a") |
368 | (setq From (match-string 4) | |
369 | Date (format "%s %s 00:00:00 %s" | |
370 | (match-string 2) (match-string 1) | |
371 | (match-string 3)))) | |
95fa1ff7 SZ |
372 | (forward-line 1) |
373 | (incf i) | |
374 | (unless (nnweb-get-hashtb url) | |
375 | (push | |
376 | (list | |
377 | (incf (cdr active)) | |
378 | (make-full-mail-header | |
379 | (cdr active) (if Newsgroups | |
380 | (concat "(" Newsgroups ") " Subject) | |
381 | Subject) | |
382 | From Date (or Message-ID mid) | |
383 | nil 0 0 url)) | |
384 | map) | |
385 | (nnweb-set-hashtb (cadar map) (car map)))) | |
386 | map)) | |
387 | ||
388 | (defun nnweb-google-reference (id) | |
389 | (let ((map (nnweb-google-parse-1 id)) header) | |
390 | (setq nnweb-articles | |
391 | (nconc nnweb-articles map)) | |
392 | (when (setq header (cadar map)) | |
393 | (mm-with-unibyte-current-buffer | |
23f87bed | 394 | (mm-url-insert (mail-header-xref header))) |
95fa1ff7 SZ |
395 | (caar map)))) |
396 | ||
397 | (defun nnweb-google-create-mapping () | |
debad045 | 398 | "Perform the search and create a number-to-url alist." |
95fa1ff7 SZ |
399 | (save-excursion |
400 | (set-buffer nnweb-buffer) | |
401 | (erase-buffer) | |
402 | (when (funcall (nnweb-definition 'search) nnweb-search) | |
23f87bed MB |
403 | (let ((more t) |
404 | (i 0)) | |
95fa1ff7 SZ |
405 | (while more |
406 | (setq nnweb-articles | |
407 | (nconc nnweb-articles (nnweb-google-parse-1))) | |
23f87bed MB |
408 | ;; Check if there are more articles to fetch |
409 | (goto-char (point-min)) | |
410 | (incf i 100) | |
411 | (if (or (not (re-search-forward | |
412 | "<td nowrap><a href=\\([^>]+\\).*<span class=b>Next</span>" nil t)) | |
413 | (>= i nnweb-max-hits)) | |
414 | (setq more nil) | |
415 | ;; Yup, there are more articles | |
5f5475ac | 416 | (setq more (concat (nnweb-definition 'base) (match-string 1))) |
23f87bed MB |
417 | (when more |
418 | (erase-buffer) | |
419 | (mm-url-insert more)))) | |
95fa1ff7 SZ |
420 | ;; Return the articles in the right order. |
421 | (setq nnweb-articles | |
422 | (sort nnweb-articles 'car-less-than-car)))))) | |
423 | ||
424 | (defun nnweb-google-search (search) | |
23f87bed | 425 | (mm-url-insert |
95fa1ff7 SZ |
426 | (concat |
427 | (nnweb-definition 'address) | |
428 | "?" | |
23f87bed | 429 | (mm-url-encode-www-form-urlencoded |
95fa1ff7 | 430 | `(("q" . ,search) |
5f5475ac | 431 | ("num" . "100") |
95fa1ff7 | 432 | ("hq" . "") |
5f5475ac | 433 | ("hl" . "en") |
95fa1ff7 SZ |
434 | ("lr" . "") |
435 | ("safe" . "off") | |
436 | ("sites" . "groups"))))) | |
437 | t) | |
438 | ||
439 | (defun nnweb-google-identity (url) | |
440 | "Return an unique identifier based on URL." | |
441 | (if (string-match "selm=\\([^ &>]+\\)" url) | |
442 | (match-string 1 url) | |
443 | url)) | |
444 | ||
23f87bed MB |
445 | ;;; |
446 | ;;; gmane.org | |
447 | ;;; | |
448 | (defun nnweb-gmane-create-mapping () | |
449 | "Perform the search and create a number-to-url alist." | |
450 | (save-excursion | |
451 | (set-buffer nnweb-buffer) | |
452 | (erase-buffer) | |
453 | (when (funcall (nnweb-definition 'search) nnweb-search) | |
454 | (let ((more t) | |
455 | (case-fold-search t) | |
456 | (active (or (cadr (assoc nnweb-group nnweb-group-alist)) | |
457 | (cons 1 0))) | |
458 | subject group url | |
459 | map) | |
460 | ;; Remove stuff from the beginning of results | |
461 | (goto-char (point-min)) | |
462 | (search-forward "Search Results</h1><ul>" nil t) | |
463 | (delete-region (point-min) (point)) | |
464 | (goto-char (point-min)) | |
465 | ;; Iterate over the actual hits | |
466 | (while (re-search-forward ".*href=\"\\([^\"]+\\)\">\\(.*\\)" nil t) | |
467 | (setq url (concat "http://gmane.org/" (match-string 1))) | |
468 | (setq subject (match-string 2)) | |
469 | (unless (nnweb-get-hashtb url) | |
470 | (push | |
471 | (list | |
472 | (incf (cdr active)) | |
473 | (make-full-mail-header | |
474 | (cdr active) (concat "(" group ") " subject) nil nil | |
475 | nil nil 0 0 url)) | |
476 | map) | |
477 | (nnweb-set-hashtb (cadar map) (car map)))) | |
478 | ;; Return the articles in the right order. | |
479 | (setq nnweb-articles | |
480 | (sort (nconc nnweb-articles map) 'car-less-than-car)))))) | |
481 | ||
482 | (defun nnweb-gmane-wash-article () | |
483 | (let ((case-fold-search t)) | |
484 | (goto-char (point-min)) | |
485 | (re-search-forward "<!--X-Head-of-Message-->" nil t) | |
486 | (delete-region (point-min) (point)) | |
487 | (goto-char (point-min)) | |
488 | (while (looking-at "^<li><em>\\([^ ]+\\)</em>.*</li>") | |
489 | (replace-match "\\1\\2" t) | |
490 | (forward-line 1)) | |
491 | (mm-url-remove-markup))) | |
492 | ||
493 | (defun nnweb-gmane-search (search) | |
494 | (mm-url-insert | |
495 | (concat | |
496 | (nnweb-definition 'address) | |
497 | "?" | |
498 | (mm-url-encode-www-form-urlencoded | |
499 | `(("query" . ,search))))) | |
500 | (setq buffer-file-name nil) | |
501 | t) | |
502 | ||
503 | ||
504 | (defun nnweb-gmane-identity (url) | |
505 | "Return a unique identifier based on URL." | |
506 | (if (string-match "group=\\(.+\\)" url) | |
507 | (match-string 1 url) | |
508 | url)) | |
509 | ||
16409b0b GM |
510 | ;;; |
511 | ;;; General web/w3 interface utility functions | |
512 | ;;; | |
513 | ||
514 | (defun nnweb-insert-html (parse) | |
515 | "Insert HTML based on a w3 parse tree." | |
516 | (if (stringp parse) | |
95fa1ff7 | 517 | (insert (nnheader-string-as-multibyte parse)) |
16409b0b GM |
518 | (insert "<" (symbol-name (car parse)) " ") |
519 | (insert (mapconcat | |
520 | (lambda (param) | |
521 | (concat (symbol-name (car param)) "=" | |
522 | (prin1-to-string | |
523 | (if (consp (cdr param)) | |
524 | (cadr param) | |
525 | (cdr param))))) | |
526 | (nth 1 parse) | |
527 | " ")) | |
528 | (insert ">\n") | |
529 | (mapcar 'nnweb-insert-html (nth 2 parse)) | |
530 | (insert "</" (symbol-name (car parse)) ">\n"))) | |
531 | ||
16409b0b GM |
532 | (defun nnweb-parse-find (type parse &optional maxdepth) |
533 | "Find the element of TYPE in PARSE." | |
534 | (catch 'found | |
535 | (nnweb-parse-find-1 type parse maxdepth))) | |
536 | ||
537 | (defun nnweb-parse-find-1 (type contents maxdepth) | |
538 | (when (or (null maxdepth) | |
539 | (not (zerop maxdepth))) | |
540 | (when (consp contents) | |
541 | (when (eq (car contents) type) | |
542 | (throw 'found contents)) | |
543 | (when (listp (cdr contents)) | |
544 | (dolist (element contents) | |
545 | (when (consp element) | |
546 | (nnweb-parse-find-1 type element | |
547 | (and maxdepth (1- maxdepth))))))))) | |
548 | ||
549 | (defun nnweb-parse-find-all (type parse) | |
550 | "Find all elements of TYPE in PARSE." | |
551 | (catch 'found | |
552 | (nnweb-parse-find-all-1 type parse))) | |
553 | ||
554 | (defun nnweb-parse-find-all-1 (type contents) | |
555 | (let (result) | |
556 | (when (consp contents) | |
557 | (if (eq (car contents) type) | |
558 | (push contents result) | |
559 | (when (listp (cdr contents)) | |
560 | (dolist (element contents) | |
561 | (when (consp element) | |
562 | (setq result | |
563 | (nconc result (nnweb-parse-find-all-1 type element)))))))) | |
564 | result)) | |
565 | ||
566 | (defvar nnweb-text) | |
567 | (defun nnweb-text (parse) | |
568 | "Return a list of text contents in PARSE." | |
569 | (let ((nnweb-text nil)) | |
570 | (nnweb-text-1 parse) | |
571 | (nreverse nnweb-text))) | |
572 | ||
573 | (defun nnweb-text-1 (contents) | |
574 | (dolist (element contents) | |
575 | (if (stringp element) | |
576 | (push element nnweb-text) | |
577 | (when (and (consp element) | |
578 | (listp (cdr element))) | |
579 | (nnweb-text-1 element))))) | |
580 | ||
eec82323 LMI |
581 | (provide 'nnweb) |
582 | ||
ab5796a9 | 583 | ;;; arch-tag: f59307eb-c90f-479f-b7d2-dbd8bf51b697 |
eec82323 | 584 | ;;; nnweb.el ends here |