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eec82323 | 1 | ;;; nnweb.el --- retrieving articles via web search engines |
e84b4b86 | 2 | |
ba318903 | 3 | ;; Copyright (C) 1996-2014 Free Software Foundation, Inc. |
eec82323 | 4 | |
6748645f | 5 | ;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org> |
eec82323 LMI |
6 | ;; Keywords: news |
7 | ||
8 | ;; This file is part of GNU Emacs. | |
9 | ||
5e809f55 | 10 | ;; GNU Emacs is free software: you can redistribute it and/or modify |
eec82323 | 11 | ;; it under the terms of the GNU General Public License as published by |
5e809f55 GM |
12 | ;; the Free Software Foundation, either version 3 of the License, or |
13 | ;; (at your option) any later version. | |
eec82323 LMI |
14 | |
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. | |
19 | ||
20 | ;; You should have received a copy of the GNU General Public License | |
5e809f55 | 21 | ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. |
eec82323 LMI |
22 | |
23 | ;;; Commentary: | |
24 | ||
eec82323 LMI |
25 | ;;; Code: |
26 | ||
5ab7173c RS |
27 | (eval-when-compile (require 'cl)) |
28 | ||
eec82323 LMI |
29 | (require 'nnoo) |
30 | (require 'message) | |
31 | (require 'gnus-util) | |
32 | (require 'gnus) | |
eec82323 | 33 | (require 'nnmail) |
16409b0b | 34 | (require 'mm-util) |
23f87bed MB |
35 | (require 'mm-url) |
36 | (eval-and-compile | |
0d5dc4a5 | 37 | (ignore-errors |
23f87bed | 38 | (require 'url))) |
eec82323 LMI |
39 | |
40 | (nnoo-declare nnweb) | |
41 | ||
42 | (defvoo nnweb-directory (nnheader-concat gnus-directory "nnweb/") | |
43 | "Where nnweb will save its files.") | |
44 | ||
95fa1ff7 | 45 | (defvoo nnweb-type 'google |
6748645f | 46 | "What search engine type is being used. |
23f87bed | 47 | Valid types include `google', `dejanews', and `gmane'.") |
eec82323 | 48 | |
16409b0b | 49 | (defvar nnweb-type-definition |
23f87bed | 50 | |
4a2358e9 | 51 | (id . "http://www.google.com/groups?as_umsgid=%s&hl=en&dmode=source") |
46e8fe3d | 52 | (result . "http://groups.google.com/group/%s/msg/%s?dmode=source") |
4a2358e9 | 53 | (article . nnweb-google-wash-article) |
95fa1ff7 SZ |
54 | (reference . identity) |
55 | (map . nnweb-google-create-mapping) | |
56 | (search . nnweb-google-search) | |
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57 | (address . "http://groups.google.com/groups") |
58 | (base . "http://groups.google.com") | |
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59 | (identifier . nnweb-google-identity)) |
60 | (dejanews ;; alias of google | |
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61 | (id . "http://www.google.com/groups?as_umsgid=%s&hl=en&dmode=source") |
62 | (result . "http://groups.google.com/group/%s/msg/%s?dmode=source") | |
63 | (article . nnweb-google-wash-article) | |
95fa1ff7 SZ |
64 | (reference . identity) |
65 | (map . nnweb-google-create-mapping) | |
66 | (search . nnweb-google-search) | |
67 | (address . "http://groups.google.com/groups") | |
5f5475ac | 68 | (base . "http://groups.google.com") |
95fa1ff7 | 69 | (identifier . nnweb-google-identity)) |
23f87bed MB |
70 | (gmane |
71 | (article . nnweb-gmane-wash-article) | |
72 | (id . "http://gmane.org/view.php?group=%s") | |
73 | (reference . identity) | |
74 | (map . nnweb-gmane-create-mapping) | |
75 | (search . nnweb-gmane-search) | |
719120ef | 76 | (address . "http://search.gmane.org/nov.php") |
23f87bed | 77 | (identifier . nnweb-gmane-identity))) |
eec82323 LMI |
78 | "Type-definition alist.") |
79 | ||
80 | (defvoo nnweb-search nil | |
23f87bed | 81 | "Search string to feed to Google.") |
eec82323 | 82 | |
6748645f | 83 | (defvoo nnweb-max-hits 999 |
eec82323 LMI |
84 | "Maximum number of hits to display.") |
85 | ||
86 | (defvoo nnweb-ephemeral-p nil | |
87 | "Whether this nnweb server is ephemeral.") | |
88 | ||
89 | ;;; Internal variables | |
90 | ||
91 | (defvoo nnweb-articles nil) | |
92 | (defvoo nnweb-buffer nil) | |
719120ef | 93 | (defvoo nnweb-group-alist nil) |
eec82323 LMI |
94 | (defvoo nnweb-group nil) |
95 | (defvoo nnweb-hashtb nil) | |
96 | ||
97 | ;;; Interface functions | |
98 | ||
99 | (nnoo-define-basics nnweb) | |
100 | ||
101 | (deffoo nnweb-retrieve-headers (articles &optional group server fetch-old) | |
102 | (nnweb-possibly-change-server group server) | |
20a673b2 | 103 | (with-current-buffer nntp-server-buffer |
eec82323 LMI |
104 | (erase-buffer) |
105 | (let (article header) | |
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106 | (mm-with-unibyte-current-buffer |
107 | (while (setq article (pop articles)) | |
108 | (when (setq header (cadr (assq article nnweb-articles))) | |
109 | (nnheader-insert-nov header)))) | |
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110 | 'nov))) |
111 | ||
112 | (deffoo nnweb-request-scan (&optional group server) | |
113 | (nnweb-possibly-change-server group server) | |
95fa1ff7 | 114 | (if nnweb-ephemeral-p |
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115 | (setq nnweb-hashtb (gnus-make-hashtable 4095)) |
116 | (unless nnweb-articles | |
117 | (nnweb-read-overview group))) | |
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118 | (funcall (nnweb-definition 'map)) |
119 | (unless nnweb-ephemeral-p | |
120 | (nnweb-write-active) | |
121 | (nnweb-write-overview group))) | |
122 | ||
286c4fc2 | 123 | (deffoo nnweb-request-group (group &optional server dont-check info) |
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124 | (nnweb-possibly-change-server group server) |
125 | (unless (or nnweb-ephemeral-p | |
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126 | dont-check |
127 | nnweb-articles) | |
46e8fe3d | 128 | (nnweb-read-overview group)) |
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129 | (cond |
130 | ((not nnweb-articles) | |
131 | (nnheader-report 'nnweb "No matching articles")) | |
132 | (t | |
133 | (let ((active (if nnweb-ephemeral-p | |
134 | (cons (caar nnweb-articles) | |
135 | (caar (last nnweb-articles))) | |
136 | (cadr (assoc group nnweb-group-alist))))) | |
137 | (nnheader-report 'nnweb "Opened group %s" group) | |
138 | (nnheader-insert | |
139 | "211 %d %d %d %s\n" (length nnweb-articles) | |
140 | (car active) (cdr active) group))))) | |
141 | ||
142 | (deffoo nnweb-close-group (group &optional server) | |
143 | (nnweb-possibly-change-server group server) | |
144 | (when (gnus-buffer-live-p nnweb-buffer) | |
20a673b2 | 145 | (with-current-buffer nnweb-buffer |
eec82323 LMI |
146 | (set-buffer-modified-p nil) |
147 | (kill-buffer nnweb-buffer))) | |
148 | t) | |
149 | ||
150 | (deffoo nnweb-request-article (article &optional group server buffer) | |
151 | (nnweb-possibly-change-server group server) | |
20a673b2 | 152 | (with-current-buffer (or buffer nntp-server-buffer) |
eec82323 LMI |
153 | (let* ((header (cadr (assq article nnweb-articles))) |
154 | (url (and header (mail-header-xref header)))) | |
155 | (when (or (and url | |
16409b0b | 156 | (mm-with-unibyte-current-buffer |
23f87bed | 157 | (mm-url-insert url))) |
eec82323 LMI |
158 | (and (stringp article) |
159 | (nnweb-definition 'id t) | |
160 | (let ((fetch (nnweb-definition 'id)) | |
95fa1ff7 | 161 | art active) |
eec82323 LMI |
162 | (when (string-match "^<\\(.*\\)>$" article) |
163 | (setq art (match-string 1 article))) | |
95fa1ff7 | 164 | (when (and fetch art) |
7ce31649 MB |
165 | (setq url (format fetch |
166 | (mm-url-form-encode-xwfu art))) | |
95fa1ff7 | 167 | (mm-with-unibyte-current-buffer |
23f87bed | 168 | (mm-url-insert url)) |
95fa1ff7 SZ |
169 | (if (nnweb-definition 'reference t) |
170 | (setq article | |
171 | (funcall (nnweb-definition | |
172 | 'reference) article))))))) | |
eec82323 | 173 | (unless nnheader-callback-function |
95fa1ff7 | 174 | (funcall (nnweb-definition 'article))) |
eec82323 | 175 | (nnheader-report 'nnweb "Fetched article %s" article) |
16409b0b | 176 | (cons group (and (numberp article) article)))))) |
eec82323 LMI |
177 | |
178 | (deffoo nnweb-close-server (&optional server) | |
179 | (when (and (nnweb-server-opened server) | |
180 | (gnus-buffer-live-p nnweb-buffer)) | |
20a673b2 | 181 | (with-current-buffer nnweb-buffer |
eec82323 LMI |
182 | (set-buffer-modified-p nil) |
183 | (kill-buffer nnweb-buffer))) | |
184 | (nnoo-close-server 'nnweb server)) | |
185 | ||
186 | (deffoo nnweb-request-list (&optional server) | |
187 | (nnweb-possibly-change-server nil server) | |
20a673b2 | 188 | (with-current-buffer nntp-server-buffer |
46e8fe3d | 189 | (nnmail-generate-active (list (assoc server nnweb-group-alist))) |
eec82323 LMI |
190 | t)) |
191 | ||
b1ae92ba | 192 | (deffoo nnweb-request-update-info (group info &optional server)) |
eec82323 LMI |
193 | |
194 | (deffoo nnweb-asynchronous-p () | |
23f87bed | 195 | nil) |
eec82323 LMI |
196 | |
197 | (deffoo nnweb-request-create-group (group &optional server args) | |
198 | (nnweb-possibly-change-server nil server) | |
199 | (nnweb-request-delete-group group) | |
46e8fe3d | 200 | (push `(,group ,(cons 1 0)) nnweb-group-alist) |
eec82323 LMI |
201 | (nnweb-write-active) |
202 | t) | |
203 | ||
204 | (deffoo nnweb-request-delete-group (group &optional force server) | |
205 | (nnweb-possibly-change-server group server) | |
36d3245f | 206 | (gnus-alist-pull group nnweb-group-alist t) |
16409b0b | 207 | (nnweb-write-active) |
eec82323 LMI |
208 | (gnus-delete-file (nnweb-overview-file group)) |
209 | t) | |
210 | ||
211 | (nnoo-define-skeleton nnweb) | |
212 | ||
213 | ;;; Internal functions | |
214 | ||
215 | (defun nnweb-read-overview (group) | |
216 | "Read the overview of GROUP and build the map." | |
217 | (when (file-exists-p (nnweb-overview-file group)) | |
16409b0b | 218 | (mm-with-unibyte-buffer |
eec82323 LMI |
219 | (nnheader-insert-file-contents (nnweb-overview-file group)) |
220 | (goto-char (point-min)) | |
221 | (let (header) | |
222 | (while (not (eobp)) | |
223 | (setq header (nnheader-parse-nov)) | |
224 | (forward-line 1) | |
225 | (push (list (mail-header-number header) | |
226 | header (mail-header-xref header)) | |
227 | nnweb-articles) | |
228 | (nnweb-set-hashtb header (car nnweb-articles))))))) | |
229 | ||
230 | (defun nnweb-write-overview (group) | |
231 | "Write the overview file for GROUP." | |
16409b0b | 232 | (with-temp-file (nnweb-overview-file group) |
eec82323 LMI |
233 | (let ((articles nnweb-articles)) |
234 | (while articles | |
235 | (nnheader-insert-nov (cadr (pop articles))))))) | |
236 | ||
237 | (defun nnweb-set-hashtb (header data) | |
238 | (gnus-sethash (nnweb-identifier (mail-header-xref header)) | |
239 | data nnweb-hashtb)) | |
240 | ||
241 | (defun nnweb-get-hashtb (url) | |
242 | (gnus-gethash (nnweb-identifier url) nnweb-hashtb)) | |
243 | ||
244 | (defun nnweb-identifier (ident) | |
245 | (funcall (nnweb-definition 'identifier) ident)) | |
246 | ||
247 | (defun nnweb-overview-file (group) | |
248 | "Return the name of the overview file of GROUP." | |
249 | (nnheader-concat nnweb-directory group ".overview")) | |
250 | ||
251 | (defun nnweb-write-active () | |
252 | "Save the active file." | |
16409b0b GM |
253 | (gnus-make-directory nnweb-directory) |
254 | (with-temp-file (nnheader-concat nnweb-directory "active") | |
eec82323 LMI |
255 | (prin1 `(setq nnweb-group-alist ',nnweb-group-alist) (current-buffer)))) |
256 | ||
257 | (defun nnweb-read-active () | |
258 | "Read the active file." | |
259 | (load (nnheader-concat nnweb-directory "active") t t t)) | |
260 | ||
261 | (defun nnweb-definition (type &optional noerror) | |
262 | "Return the definition of TYPE." | |
263 | (let ((def (cdr (assq type (assq nnweb-type nnweb-type-definition))))) | |
264 | (when (and (not def) | |
265 | (not noerror)) | |
266 | (error "Undefined definition %s" type)) | |
267 | def)) | |
268 | ||
269 | (defun nnweb-possibly-change-server (&optional group server) | |
eec82323 LMI |
270 | (when server |
271 | (unless (nnweb-server-opened server) | |
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272 | (nnweb-open-server server)) |
273 | (nnweb-init server)) | |
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274 | (unless nnweb-group-alist |
275 | (nnweb-read-active)) | |
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276 | (unless nnweb-hashtb |
277 | (setq nnweb-hashtb (gnus-make-hashtable 4095))) | |
eec82323 | 278 | (when group |
46e8fe3d | 279 | (setq nnweb-group group))) |
eec82323 LMI |
280 | |
281 | (defun nnweb-init (server) | |
282 | "Initialize buffers and such." | |
283 | (unless (gnus-buffer-live-p nnweb-buffer) | |
284 | (setq nnweb-buffer | |
3b728e95 SM |
285 | (save-current-buffer |
286 | (nnheader-set-temp-buffer | |
287 | (format " *nnweb %s %s %s*" | |
288 | nnweb-type nnweb-search server)) | |
289 | (mm-disable-multibyte) | |
290 | (current-buffer))))) | |
eec82323 | 291 | |
95fa1ff7 | 292 | ;;; |
4a2358e9 | 293 | ;;; groups.google.com |
95fa1ff7 SZ |
294 | ;;; |
295 | ||
296 | (defun nnweb-google-wash-article () | |
4a2358e9 | 297 | ;; We have Google's masked e-mail addresses here. :-/ |
719120ef | 298 | (let ((case-fold-search t) |
0565caeb MB |
299 | (start-re "<pre>[\r\n ]*") |
300 | (end-re "[\r\n ]*</pre>")) | |
95fa1ff7 | 301 | (goto-char (point-min)) |
d752cf53 MB |
302 | (if (save-excursion |
303 | (or (re-search-forward "The requested message.*could not be found." | |
304 | nil t) | |
719120ef MB |
305 | (not (and (re-search-forward start-re nil t) |
306 | (re-search-forward end-re nil t))))) | |
d752cf53 MB |
307 | ;; FIXME: Don't know how to indicate "not found". |
308 | ;; Should this function throw an error? --rsteib | |
309 | (progn | |
310 | (gnus-message 3 "Requested article not found") | |
311 | (erase-buffer)) | |
312 | (delete-region (point-min) | |
719120ef | 313 | (re-search-forward start-re)) |
d752cf53 | 314 | (goto-char (point-min)) |
719120ef MB |
315 | (delete-region (progn |
316 | (re-search-forward end-re) | |
317 | (match-beginning 0)) | |
d752cf53 MB |
318 | (point-max)) |
319 | (mm-url-decode-entities)))) | |
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320 | |
321 | (defun nnweb-google-parse-1 (&optional Message-ID) | |
46e8fe3d | 322 | "Parse search result in current buffer." |
95fa1ff7 SZ |
323 | (let ((i 0) |
324 | (case-fold-search t) | |
325 | (active (cadr (assoc nnweb-group nnweb-group-alist))) | |
326 | Subject Score Date Newsgroups From | |
327 | map url mid) | |
328 | (unless active | |
46e8fe3d | 329 | (push (list nnweb-group (setq active (cons 1 0))) |
95fa1ff7 SZ |
330 | nnweb-group-alist)) |
331 | ;; Go through all the article hits on this page. | |
332 | (goto-char (point-min)) | |
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333 | (while |
334 | (re-search-forward | |
335 | "a +href=\"/group/\\([^>\"]+\\)/browse_thread/[^>]+#\\([0-9a-f]+\\)" | |
336 | nil t) | |
337 | (setq Newsgroups (match-string-no-properties 1) | |
338 | ;; Note: Starting with Google Groups 2, `mid' is a Google-internal | |
339 | ;; ID, not a proper Message-ID. | |
340 | mid (match-string-no-properties 2) | |
debad045 | 341 | url (format |
46e8fe3d | 342 | (nnweb-definition 'result) Newsgroups mid)) |
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343 | (narrow-to-region (search-forward ">" nil t) |
344 | (search-forward "</a>" nil t)) | |
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345 | (mm-url-remove-markup) |
346 | (mm-url-decode-entities) | |
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347 | (setq Subject (buffer-string)) |
348 | (goto-char (point-max)) | |
349 | (widen) | |
46e8fe3d | 350 | (narrow-to-region (point) |
c91f4b83 | 351 | (search-forward "</table" nil t)) |
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352 | |
353 | (mm-url-remove-markup) | |
354 | (mm-url-decode-entities) | |
c91f4b83 MB |
355 | (goto-char (point-max)) |
356 | (when | |
357 | (re-search-backward | |
14e8de0c | 358 | "^\\(?:\\(\\w+\\) \\([0-9]+\\)\\|\\S-+\\)\\(?: \\([0-9]\\{4\\}\\)\\)? by ?\\(.*\\)" |
c91f4b83 | 359 | nil t) |
aa260d63 MB |
360 | (setq Date (if (match-string 1) |
361 | (format "%s %s 00:00:00 %s" | |
362 | (match-string 1) | |
363 | (match-string 2) | |
364 | (or (match-string 3) | |
0bfcf5c5 | 365 | (format-time-string "%Y"))) |
aa260d63 | 366 | (current-time-string))) |
c91f4b83 | 367 | (setq From (match-string 4))) |
46e8fe3d | 368 | (widen) |
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369 | (incf i) |
370 | (unless (nnweb-get-hashtb url) | |
371 | (push | |
372 | (list | |
373 | (incf (cdr active)) | |
374 | (make-full-mail-header | |
375 | (cdr active) (if Newsgroups | |
376 | (concat "(" Newsgroups ") " Subject) | |
377 | Subject) | |
378 | From Date (or Message-ID mid) | |
379 | nil 0 0 url)) | |
380 | map) | |
381 | (nnweb-set-hashtb (cadar map) (car map)))) | |
382 | map)) | |
383 | ||
384 | (defun nnweb-google-reference (id) | |
385 | (let ((map (nnweb-google-parse-1 id)) header) | |
386 | (setq nnweb-articles | |
387 | (nconc nnweb-articles map)) | |
388 | (when (setq header (cadar map)) | |
389 | (mm-with-unibyte-current-buffer | |
23f87bed | 390 | (mm-url-insert (mail-header-xref header))) |
95fa1ff7 SZ |
391 | (caar map)))) |
392 | ||
393 | (defun nnweb-google-create-mapping () | |
debad045 | 394 | "Perform the search and create a number-to-url alist." |
20a673b2 | 395 | (with-current-buffer nnweb-buffer |
95fa1ff7 | 396 | (erase-buffer) |
719120ef | 397 | (nnheader-message 7 "Searching google...") |
95fa1ff7 | 398 | (when (funcall (nnweb-definition 'search) nnweb-search) |
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399 | (let ((more t) |
400 | (i 0)) | |
95fa1ff7 SZ |
401 | (while more |
402 | (setq nnweb-articles | |
403 | (nconc nnweb-articles (nnweb-google-parse-1))) | |
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404 | ;; Check if there are more articles to fetch |
405 | (goto-char (point-min)) | |
406 | (incf i 100) | |
407 | (if (or (not (re-search-forward | |
bd876f90 | 408 | "<a [^>]+href=\"\n?\\([^>\" \n\t]+\\)[^<]*<img[^>]+src=[^>]+next" |
719120ef | 409 | nil t)) |
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410 | (>= i nnweb-max-hits)) |
411 | (setq more nil) | |
412 | ;; Yup, there are more articles | |
5f5475ac | 413 | (setq more (concat (nnweb-definition 'base) (match-string 1))) |
23f87bed MB |
414 | (when more |
415 | (erase-buffer) | |
719120ef | 416 | (nnheader-message 7 "Searching google...(%d)" i) |
23f87bed | 417 | (mm-url-insert more)))) |
95fa1ff7 | 418 | ;; Return the articles in the right order. |
719120ef | 419 | (nnheader-message 7 "Searching google...done") |
95fa1ff7 SZ |
420 | (setq nnweb-articles |
421 | (sort nnweb-articles 'car-less-than-car)))))) | |
422 | ||
423 | (defun nnweb-google-search (search) | |
23f87bed | 424 | (mm-url-insert |
95fa1ff7 SZ |
425 | (concat |
426 | (nnweb-definition 'address) | |
427 | "?" | |
23f87bed | 428 | (mm-url-encode-www-form-urlencoded |
95fa1ff7 | 429 | `(("q" . ,search) |
7ce31649 MB |
430 | ("num" . ,(number-to-string |
431 | (min 100 nnweb-max-hits))) | |
95fa1ff7 | 432 | ("hq" . "") |
5f5475ac | 433 | ("hl" . "en") |
95fa1ff7 SZ |
434 | ("lr" . "") |
435 | ("safe" . "off") | |
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436 | ("sites" . "groups") |
437 | ("filter" . "0"))))) | |
95fa1ff7 SZ |
438 | t) |
439 | ||
440 | (defun nnweb-google-identity (url) | |
441 | "Return an unique identifier based on URL." | |
442 | (if (string-match "selm=\\([^ &>]+\\)" url) | |
443 | (match-string 1 url) | |
444 | url)) | |
445 | ||
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446 | ;;; |
447 | ;;; gmane.org | |
448 | ;;; | |
449 | (defun nnweb-gmane-create-mapping () | |
450 | "Perform the search and create a number-to-url alist." | |
20a673b2 | 451 | (with-current-buffer nnweb-buffer |
719120ef MB |
452 | (let ((case-fold-search t) |
453 | (active (or (cadr (assoc nnweb-group nnweb-group-alist)) | |
454 | (cons 1 0))) | |
455 | map) | |
456 | (erase-buffer) | |
457 | (nnheader-message 7 "Searching Gmane..." ) | |
458 | (when (funcall (nnweb-definition 'search) nnweb-search) | |
23f87bed | 459 | (goto-char (point-min)) |
719120ef MB |
460 | ;; Skip the status line |
461 | (forward-line 1) | |
462 | ;; Thanks to Olly Betts we now have NOV lines in our buffer! | |
463 | (while (not (eobp)) | |
464 | (unless (or (eolp) (looking-at "\x0d")) | |
465 | (let ((header (nnheader-parse-nov))) | |
466 | (let ((xref (mail-header-xref header)) | |
467 | (from (mail-header-from header)) | |
468 | (subject (mail-header-subject header)) | |
469 | (rfc2047-encoding-type 'mime)) | |
ba361211 | 470 | (when (string-match " \\([^:]+\\)[:/]\\([0-9]+\\)" xref) |
719120ef MB |
471 | (mail-header-set-xref |
472 | header | |
473 | (format "http://article.gmane.org/%s/%s/raw" | |
474 | (match-string 1 xref) | |
475 | (match-string 2 xref)))) | |
476 | ||
477 | ;; Add host part to gmane-encrypted addresses | |
478 | (when (string-match "@$" from) | |
479 | (mail-header-set-from header | |
480 | (concat from "public.gmane.org"))) | |
481 | ||
482 | (mail-header-set-subject header | |
483 | (rfc2047-encode-string subject)) | |
484 | ||
485 | (unless (nnweb-get-hashtb (mail-header-xref header)) | |
ba361211 MB |
486 | (mail-header-set-number header (incf (cdr active))) |
487 | (push (list (mail-header-number header) header) map) | |
719120ef MB |
488 | (nnweb-set-hashtb (cadar map) (car map)))))) |
489 | (forward-line 1))) | |
490 | (nnheader-message 7 "Searching Gmane...done") | |
491 | (setq nnweb-articles | |
492 | (sort (nconc nnweb-articles map) 'car-less-than-car))))) | |
23f87bed MB |
493 | |
494 | (defun nnweb-gmane-wash-article () | |
495 | (let ((case-fold-search t)) | |
496 | (goto-char (point-min)) | |
719120ef MB |
497 | (when (search-forward "<!--X-Head-of-Message-->" nil t) |
498 | (delete-region (point-min) (point)) | |
499 | (goto-char (point-min)) | |
500 | (while (looking-at "^<li><em>\\([^ ]+\\)</em>.*</li>") | |
501 | (replace-match "\\1\\2" t) | |
502 | (forward-line 1)) | |
503 | (mm-url-remove-markup)))) | |
23f87bed MB |
504 | |
505 | (defun nnweb-gmane-search (search) | |
506 | (mm-url-insert | |
507 | (concat | |
508 | (nnweb-definition 'address) | |
509 | "?" | |
510 | (mm-url-encode-www-form-urlencoded | |
719120ef | 511 | `(("query" . ,search) |
01c52d31 MB |
512 | ("HITSPERPAGE" . ,(number-to-string nnweb-max-hits)) |
513 | ;;("TOPDOC" . "1000") | |
514 | )))) | |
23f87bed | 515 | (setq buffer-file-name nil) |
765d4319 | 516 | (unless (featurep 'xemacs) (set-buffer-multibyte t)) |
719120ef | 517 | (mm-decode-coding-region (point-min) (point-max) 'utf-8) |
23f87bed MB |
518 | t) |
519 | ||
23f87bed MB |
520 | (defun nnweb-gmane-identity (url) |
521 | "Return a unique identifier based on URL." | |
522 | (if (string-match "group=\\(.+\\)" url) | |
523 | (match-string 1 url) | |
524 | url)) | |
525 | ||
16409b0b | 526 | ;;; |
4d2226bf | 527 | ;;; General web interface utility functions |
16409b0b GM |
528 | ;;; |
529 | ||
530 | (defun nnweb-insert-html (parse) | |
531 | "Insert HTML based on a w3 parse tree." | |
532 | (if (stringp parse) | |
944c87e0 SM |
533 | ;; We used to call nnheader-string-as-multibyte here, but it cannot |
534 | ;; be right, so I removed it. If a bug shows up because of this change, | |
535 | ;; please do not blindly revert the change, but help me find the real | |
536 | ;; cause of the bug instead. --Stef | |
537 | (insert parse) | |
16409b0b GM |
538 | (insert "<" (symbol-name (car parse)) " ") |
539 | (insert (mapconcat | |
540 | (lambda (param) | |
541 | (concat (symbol-name (car param)) "=" | |
542 | (prin1-to-string | |
543 | (if (consp (cdr param)) | |
544 | (cadr param) | |
545 | (cdr param))))) | |
546 | (nth 1 parse) | |
547 | " ")) | |
548 | (insert ">\n") | |
01c52d31 | 549 | (mapc 'nnweb-insert-html (nth 2 parse)) |
16409b0b GM |
550 | (insert "</" (symbol-name (car parse)) ">\n"))) |
551 | ||
16409b0b GM |
552 | (defun nnweb-parse-find (type parse &optional maxdepth) |
553 | "Find the element of TYPE in PARSE." | |
554 | (catch 'found | |
555 | (nnweb-parse-find-1 type parse maxdepth))) | |
556 | ||
557 | (defun nnweb-parse-find-1 (type contents maxdepth) | |
558 | (when (or (null maxdepth) | |
559 | (not (zerop maxdepth))) | |
560 | (when (consp contents) | |
561 | (when (eq (car contents) type) | |
562 | (throw 'found contents)) | |
563 | (when (listp (cdr contents)) | |
564 | (dolist (element contents) | |
565 | (when (consp element) | |
566 | (nnweb-parse-find-1 type element | |
567 | (and maxdepth (1- maxdepth))))))))) | |
568 | ||
569 | (defun nnweb-parse-find-all (type parse) | |
570 | "Find all elements of TYPE in PARSE." | |
571 | (catch 'found | |
572 | (nnweb-parse-find-all-1 type parse))) | |
573 | ||
574 | (defun nnweb-parse-find-all-1 (type contents) | |
575 | (let (result) | |
576 | (when (consp contents) | |
577 | (if (eq (car contents) type) | |
578 | (push contents result) | |
579 | (when (listp (cdr contents)) | |
580 | (dolist (element contents) | |
581 | (when (consp element) | |
582 | (setq result | |
583 | (nconc result (nnweb-parse-find-all-1 type element)))))))) | |
584 | result)) | |
585 | ||
586 | (defvar nnweb-text) | |
587 | (defun nnweb-text (parse) | |
588 | "Return a list of text contents in PARSE." | |
589 | (let ((nnweb-text nil)) | |
590 | (nnweb-text-1 parse) | |
591 | (nreverse nnweb-text))) | |
592 | ||
593 | (defun nnweb-text-1 (contents) | |
594 | (dolist (element contents) | |
595 | (if (stringp element) | |
596 | (push element nnweb-text) | |
597 | (when (and (consp element) | |
598 | (listp (cdr element))) | |
599 | (nnweb-text-1 element))))) | |
600 | ||
eec82323 LMI |
601 | (provide 'nnweb) |
602 | ||
603 | ;;; nnweb.el ends here |