;;; nnweb.el --- retrieving articles via web search engines
-;; Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002
-;; Free Software Foundation, Inc.
+
+;; Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
+;; 2004, 2005 Free Software Foundation, Inc.
;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
;; Keywords: news
;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs; see the file COPYING. If not, write to the
-;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-;; Boston, MA 02111-1307, USA.
+;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+;; Boston, MA 02110-1301, USA.
;;; Commentary:
;; Note: You need to have `w3' installed for some functions to work.
+;; FIXME: Due to changes in the HTML output of Google Groups and Gmane, stuff
+;; related to web groups (gnus-group-make-web-group) doesn't work anymore.
+
+;; Fetching an article by MID (cf. gnus-refer-article-method) over Google
+;; Groups should work.
+
;;; Code:
(eval-when-compile (require 'cl))
(defvoo nnweb-type 'google
"What search engine type is being used.
-Valid types include `google', `dejanews', `reference', and `altavista'.")
+Valid types include `google', `dejanews', and `gmane'.")
(defvar nnweb-type-definition
'((google
- (article . ignore)
- (id . "http://groups.google.com/groups?selm=%s&output=gplain")
+ (id . "http://www.google.com/groups?as_umsgid=%s&hl=en&dmode=source")
+ (article . nnweb-google-wash-article)
(reference . identity)
(map . nnweb-google-create-mapping)
(search . nnweb-google-search)
(address . "http://groups.google.com/groups")
+ (base . "http://groups.google.com")
(identifier . nnweb-google-identity))
(dejanews ;; alias of google
- ;;(article . nnweb-google-wash-article)
- ;;(id . "http://groups.google.com/groups?as_umsgid=%s")
(article . ignore)
(id . "http://groups.google.com/groups?selm=%s&output=gplain")
- ;;(reference . nnweb-google-reference)
(reference . identity)
(map . nnweb-google-create-mapping)
(search . nnweb-google-search)
(address . "http://groups.google.com/groups")
+ (base . "http://groups.google.com")
(identifier . nnweb-google-identity))
- (reference
- (article . nnweb-reference-wash-article)
- (map . nnweb-reference-create-mapping)
- (search . nnweb-reference-search)
- (address . "http://www.reference.com/cgi-bin/pn/go")
- (identifier . identity))
- (altavista
- (article . nnweb-altavista-wash-article)
- (map . nnweb-altavista-create-mapping)
- (search . nnweb-altavista-search)
- (address . "http://www.altavista.digital.com/cgi-bin/query")
- (id . "/cgi-bin/news?id@%s")
- (identifier . identity)))
+ (gmane
+ (article . nnweb-gmane-wash-article)
+ (id . "http://gmane.org/view.php?group=%s")
+ (reference . identity)
+ (map . nnweb-gmane-create-mapping)
+ (search . nnweb-gmane-search)
+ (address . "http://gmane.org/")
+ (identifier . nnweb-gmane-identity)))
"Type-definition alist.")
(defvoo nnweb-search nil
- "Search string to feed to DejaNews.")
+ "Search string to feed to Google.")
(defvoo nnweb-max-hits 999
"Maximum number of hits to display.")
(nnweb-possibly-change-server group server))
(deffoo nnweb-asynchronous-p ()
- t)
+ nil)
(deffoo nnweb-request-create-group (group &optional server args)
(nnweb-possibly-change-server nil server)
nnweb-type nnweb-search server))
(current-buffer))))))
-;; (defun nnweb-fetch-url (url)
-;; (let (buf)
-;; (save-excursion
-;; (if (not nnheader-callback-function)
-;; (progn
-;; (with-temp-buffer
-;; (mm-enable-multibyte)
-;; (let ((coding-system-for-read 'binary)
-;; (coding-system-for-write 'binary)
-;; (default-process-coding-system 'binary))
-;; (nnweb-insert url))
-;; (setq buf (buffer-string)))
-;; (erase-buffer)
-;; (insert buf)
-;; t)
-;; (nnweb-url-retrieve-asynch
-;; url 'nnweb-callback (current-buffer) nnheader-callback-function)
-;; t))))
-
-;; (defun nnweb-callback (buffer callback)
-;; (when (gnus-buffer-live-p url-working-buffer)
-;; (save-excursion
-;; (set-buffer url-working-buffer)
-;; (funcall (nnweb-definition 'article))
-;; (nnweb-decode-entities)
-;; (set-buffer buffer)
-;; (goto-char (point-max))
-;; (insert-buffer-substring url-working-buffer))
-;; (funcall callback t)
-;; (gnus-kill-buffer url-working-buffer)))
-
-;; (defun nnweb-url-retrieve-asynch (url callback &rest data)
-;; (let ((url-request-method "GET")
-;; (old-asynch url-be-asynchronous)
-;; (url-request-data nil)
-;; (url-request-extra-headers nil)
-;; (url-working-buffer (generate-new-buffer-name " *nnweb*")))
-;; (setq-default url-be-asynchronous t)
-;; (save-excursion
-;; (set-buffer (get-buffer-create url-working-buffer))
-;; (setq url-current-callback-data data
-;; url-be-asynchronous t
-;; url-current-callback-func callback)
-;; (url-retrieve url nil))
-;; (setq-default url-be-asynchronous old-asynch)))
-
-;; (if (fboundp 'url-retrieve-synchronously)
-;; (defun nnweb-url-retrieve-asynch (url callback &rest data)
-;; (url-retrieve url callback data)))
-
-;;;
-;;; DejaNews functions.
-;;;
-
-(defun nnweb-dejanews-create-mapping ()
- "Perform the search and create an number-to-url alist."
- (save-excursion
- (set-buffer nnweb-buffer)
- (erase-buffer)
- (when (funcall (nnweb-definition 'search) nnweb-search)
- (let ((i 0)
- (more t)
- (case-fold-search t)
- (active (or (cadr (assoc nnweb-group nnweb-group-alist))
- (cons 1 0)))
- subject date from
- map url parse a table group text)
- (while more
- ;; Go through all the article hits on this page.
- (goto-char (point-min))
- (setq parse (w3-parse-buffer (current-buffer))
- table (nth 1 (nnweb-parse-find-all 'table parse)))
- (dolist (row (nth 2 (car (nth 2 table))))
- (setq a (nnweb-parse-find 'a row)
- url (cdr (assq 'href (nth 1 a)))
- text (nreverse (nnweb-text row)))
- (when a
- (setq subject (nth 4 text)
- group (nth 2 text)
- date (nth 1 text)
- from (nth 0 text))
- (if (string-match "\\([0-9]+\\)/\\([0-9]+\\)/\\([0-9]+\\)" date)
- (setq date (format "%s %s 00:00:00 %s"
- (car (rassq (string-to-number
- (match-string 2 date))
- parse-time-months))
- (match-string 3 date)
- (match-string 1 date)))
- (setq date "Jan 1 00:00:00 0000"))
- (incf i)
- (setq url (concat url "&fmt=text"))
- (when (string-match "&context=[^&]+" url)
- (setq url (replace-match "" t t url)))
- (unless (nnweb-get-hashtb url)
- (push
- (list
- (incf (cdr active))
- (make-full-mail-header
- (cdr active) (concat subject " (" group ")") from date
- (concat "<" (nnweb-identifier url) "@dejanews>")
- nil 0 0 url))
- map)
- (nnweb-set-hashtb (cadar map) (car map)))))
- ;; See whether there is a "Get next 20 hits" button here.
- (goto-char (point-min))
- (if (or (not (re-search-forward
- "HREF=\"\\([^\"]+\\)\"[<>b]+Next result" nil t))
- (>= i nnweb-max-hits))
- (setq more nil)
- ;; Yup -- fetch it.
- (setq more (match-string 1))
- (erase-buffer)
- (mm-url-insert more)))
- ;; Return the articles in the right order.
- (setq nnweb-articles
- (sort (nconc nnweb-articles map) 'car-less-than-car))))))
-
-(defun nnweb-dejanews-search (search)
- (mm-url-insert
- (concat
- (nnweb-definition 'address)
- "?"
- (mm-url-encode-www-form-urlencoded
- `(("ST" . "PS")
- ("svcclass" . "dnyr")
- ("QRY" . ,search)
- ("defaultOp" . "AND")
- ("DBS" . "1")
- ("OP" . "dnquery.xp")
- ("LNG" . "ALL")
- ("maxhits" . "100")
- ("threaded" . "0")
- ("format" . "verbose2")
- ("showsort" . "date")
- ("agesign" . "1")
- ("ageweight" . "1")))))
- t)
-
-;; (defun nnweb-dejanewsold-search (search)
-;; (nnweb-fetch-form
-;; (nnweb-definition 'address)
-;; `(("query" . ,search)
-;; ("defaultOp" . "AND")
-;; ("svcclass" . "dnold")
-;; ("maxhits" . "100")
-;; ("format" . "verbose2")
-;; ("threaded" . "0")
-;; ("showsort" . "date")
-;; ("agesign" . "1")
-;; ("ageweight" . "1")))
-;; t)
-
-(defun nnweb-dejanews-identity (url)
- "Return an unique identifier based on URL."
- (if (string-match "AN=\\([0-9]+\\)" url)
- (match-string 1 url)
- url))
-
;;;
-;;; InReference
+;;; groups.google.com
;;;
-(defun nnweb-reference-create-mapping ()
- "Perform the search and create an number-to-url alist."
- (save-excursion
- (set-buffer nnweb-buffer)
- (erase-buffer)
- (when (funcall (nnweb-definition 'search) nnweb-search)
- (let ((i 0)
- (more t)
- (case-fold-search t)
- (active (or (cadr (assoc nnweb-group nnweb-group-alist))
- (cons 1 0)))
- Subject Score Date Newsgroups From Message-ID
- map url)
- (while more
- ;; Go through all the article hits on this page.
- (goto-char (point-min))
- (search-forward "</pre><hr>" nil t)
- (delete-region (point-min) (point))
- (goto-char (point-min))
- (while (re-search-forward "^ +[0-9]+\\." nil t)
- (narrow-to-region
- (point)
- (if (re-search-forward "^$" nil t)
- (match-beginning 0)
- (point-max)))
- (goto-char (point-min))
- (when (looking-at ".*href=\"\\([^\"]+\\)\"")
- (setq url (match-string 1)))
- (mm-url-remove-markup)
- (goto-char (point-min))
- (while (search-forward "\t" nil t)
- (replace-match " "))
- (goto-char (point-min))
- (while (re-search-forward "^\\([^:]+\\): \\(.*\\)$" nil t)
- (set (intern (match-string 1)) (match-string 2)))
- (widen)
- (search-forward "</pre>" nil t)
- (incf i)
- (unless (nnweb-get-hashtb url)
- (push
- (list
- (incf (cdr active))
- (make-full-mail-header
- (cdr active) (concat "(" Newsgroups ") " Subject) From Date
- Message-ID
- nil 0 (string-to-int Score) url))
- map)
- (nnweb-set-hashtb (cadar map) (car map))))
- (setq more nil))
- ;; Return the articles in the right order.
- (setq nnweb-articles
- (sort (nconc nnweb-articles map) 'car-less-than-car))))))
-
-(defun nnweb-reference-wash-article ()
- (let ((case-fold-search t))
- (goto-char (point-min))
- (re-search-forward "^</center><hr>" nil t)
- (delete-region (point-min) (point))
- (search-forward "<pre>" nil t)
- (forward-line -1)
- (let ((body (point-marker)))
- (search-forward "</pre>" nil t)
- (delete-region (point) (point-max))
- (mm-url-remove-markup)
- (goto-char (point-min))
- (while (looking-at " *$")
- (gnus-delete-line))
- (narrow-to-region (point-min) body)
- (while (and (re-search-forward "^$" nil t)
- (not (eobp)))
- (gnus-delete-line))
- (goto-char (point-min))
- (while (looking-at "\\(^[^ ]+:\\) *")
- (replace-match "\\1 " t)
- (forward-line 1))
- (goto-char (point-min))
- (when (re-search-forward "^References:" nil t)
- (narrow-to-region
- (point) (if (re-search-forward "^$\\|^[^:]+:" nil t)
- (match-beginning 0)
- (point-max)))
- (goto-char (point-min))
- (while (not (eobp))
- (unless (looking-at "References")
- (insert "\t")
- (forward-line 1)))
- (goto-char (point-min))
- (while (search-forward "," nil t)
- (replace-match " " t t)))
- (widen)
- (mm-url-decode-entities)
- (set-marker body nil))))
-
-(defun nnweb-reference-search (search)
- (mm-url-insert
- (concat
- (nnweb-definition 'address)
- "?"
- (mm-url-encode-www-form-urlencoded
- `(("search" . "advanced")
- ("querytext" . ,search)
- ("subj" . "")
- ("name" . "")
- ("login" . "")
- ("host" . "")
- ("organization" . "")
- ("groups" . "")
- ("keywords" . "")
- ("choice" . "Search")
- ("startmonth" . "Jul")
- ("startday" . "25")
- ("startyear" . "1996")
- ("endmonth" . "Aug")
- ("endday" . "24")
- ("endyear" . "1996")
- ("mode" . "Quick")
- ("verbosity" . "Verbose")
- ("ranking" . "Relevance")
- ("first" . "1")
- ("last" . "25")
- ("score" . "50")))))
- (setq buffer-file-name nil)
- t)
-
-;;;
-;;; Alta Vista
-;;;
-
-(defun nnweb-altavista-create-mapping ()
- "Perform the search and create an number-to-url alist."
- (save-excursion
- (set-buffer nnweb-buffer)
- (erase-buffer)
- (let ((part 0))
- (when (funcall (nnweb-definition 'search) nnweb-search part)
- (let ((i 0)
- (more t)
- (case-fold-search t)
- (active (or (cadr (assoc nnweb-group nnweb-group-alist))
- (cons 1 0)))
- subject date from id group
- map url)
- (while more
- ;; Go through all the article hits on this page.
- (goto-char (point-min))
- (search-forward "<dt>" nil t)
- (delete-region (point-min) (match-beginning 0))
- (goto-char (point-min))
- (while (search-forward "<dt>" nil t)
- (replace-match "\n<blubb>"))
- (mm-url-decode-entities)
- (goto-char (point-min))
- (while (re-search-forward "<blubb>.*href=\"\\([^\"]+\\)\"><strong>\\([^>]*\\)</strong></a><dd>\\([^-]+\\)- <b>\\([^<]+\\)<.*href=\"news:\\([^\"]+\\)\">.*\">\\(.+\\)</a><P>"
- nil t)
- (setq url (match-string 1)
- subject (match-string 2)
- date (match-string 3)
- group (match-string 4)
- id (concat "<" (match-string 5) ">")
- from (match-string 6))
- (incf i)
- (unless (nnweb-get-hashtb url)
- (push
- (list
- (incf (cdr active))
- (make-full-mail-header
- (cdr active) (concat "(" group ") " subject) from date
- id nil 0 0 url))
- map)
- (nnweb-set-hashtb (cadar map) (car map))))
- ;; See if we want more.
- (when (or (not nnweb-articles)
- (>= i nnweb-max-hits)
- (not (funcall (nnweb-definition 'search)
- nnweb-search (incf part))))
- (setq more nil)))
- ;; Return the articles in the right order.
- (setq nnweb-articles
- (sort (nconc nnweb-articles map) 'car-less-than-car)))))))
-
-(defun nnweb-altavista-wash-article ()
- (goto-char (point-min))
+(defun nnweb-google-wash-article ()
+ ;; We have Google's masked e-mail addresses here. :-/
(let ((case-fold-search t))
- (when (re-search-forward "^<strong>" nil t)
- (delete-region (point-min) (match-beginning 0)))
(goto-char (point-min))
- (while (looking-at "<strong>\\([^ ]+\\) +</strong> +\\(.*\\)$")
- (replace-match "\\1: \\2" t)
- (forward-line 1))
- (when (re-search-backward "^References:" nil t)
- (narrow-to-region (point) (progn (forward-line 1) (point)))
+ (if (save-excursion
+ (or (re-search-forward "The requested message.*could not be found."
+ nil t)
+ (not (and (re-search-forward "^<pre>" nil t)
+ (re-search-forward "^</pre>" nil t)))))
+ ;; FIXME: Don't know how to indicate "not found".
+ ;; Should this function throw an error? --rsteib
+ (progn
+ (gnus-message 3 "Requested article not found")
+ (erase-buffer))
+ (delete-region (point-min)
+ (1+ (re-search-forward "^<pre>" nil t)))
(goto-char (point-min))
- (while (re-search-forward "<A.*\\?id@\\([^\"]+\\)\">[0-9]+</A>" nil t)
- (replace-match "<\\1> " t)))
- (widen)
- (mm-url-remove-markup)
- (mm-url-decode-entities)))
-
-(defun nnweb-altavista-search (search &optional part)
- (mm-url-insert
- (concat
- (nnweb-definition 'address)
- "?"
- (mm-url-encode-www-form-urlencoded
- `(("pg" . "aq")
- ("what" . "news")
- ,@(when part `(("stq" . ,(int-to-string (* part 30)))))
- ("fmt" . "d")
- ("q" . ,search)
- ("r" . "")
- ("d0" . "")
- ("d1" . "")))))
- (setq buffer-file-name nil)
- t)
-
-;;;
-;;; Deja bought by google.com
-;;;
-
-(defun nnweb-google-wash-article ()
- (let ((case-fold-search t) url)
- (goto-char (point-min))
- (re-search-forward "^<pre>" nil t)
- (narrow-to-region (point-min) (point))
- (search-backward "<table " nil t 2)
- (delete-region (point-min) (point))
- (if (re-search-forward "Search Result [0-9]+" nil t)
- (replace-match ""))
- (if (re-search-forward "View complete thread ([0-9]+ articles?)" nil t)
- (replace-match ""))
- (goto-char (point-min))
- (while (search-forward "<br>" nil t)
- (replace-match "\n"))
- (mm-url-remove-markup)
- (goto-char (point-min))
- (while (re-search-forward "^[ \t]*\n" nil t)
- (replace-match ""))
- (goto-char (point-max))
- (insert "\n")
- (widen)
- (narrow-to-region (point) (point-max))
- (search-forward "</pre>" nil t)
- (delete-region (point) (point-max))
- (mm-url-remove-markup)
- (widen)))
+ (delete-region (- (re-search-forward "^</pre>" nil t) (length "</pre>"))
+ (point-max))
+ (mm-url-decode-entities))))
(defun nnweb-google-parse-1 (&optional Message-ID)
(let ((i 0)
"a href=/groups\\(\\?[^ \">]*selm=\\([^ &\">]+\\)\\)" nil t)
(setq mid (match-string 2)
url (format
- "http://groups.google.com/groups?selm=%s&output=gplain" mid))
+ (nnweb-definition 'id) mid))
(narrow-to-region (search-forward ">" nil t)
(search-forward "</a>" nil t))
(mm-url-remove-markup)
(setq Subject (buffer-string))
(goto-char (point-max))
(widen)
- (forward-line 1)
+ (forward-line 2)
(when (looking-at "<br><font[^>]+>")
(goto-char (match-end 0)))
(if (not (looking-at "<a[^>]+>"))
(caar map))))
(defun nnweb-google-create-mapping ()
- "Perform the search and create an number-to-url alist."
+ "Perform the search and create a number-to-url alist."
(save-excursion
(set-buffer nnweb-buffer)
(erase-buffer)
(when (funcall (nnweb-definition 'search) nnweb-search)
- (let ((more t))
+ (let ((more t)
+ (i 0))
(while more
(setq nnweb-articles
(nconc nnweb-articles (nnweb-google-parse-1)))
- ;; FIXME: There is more.
- (setq more nil))
+ ;; Check if there are more articles to fetch
+ (goto-char (point-min))
+ (incf i 100)
+ (if (or (not (re-search-forward
+ "<td nowrap><a href=\\([^>]+\\).*<span class=b>Next</span>" nil t))
+ (>= i nnweb-max-hits))
+ (setq more nil)
+ ;; Yup, there are more articles
+ (setq more (concat (nnweb-definition 'base) (match-string 1)))
+ (when more
+ (erase-buffer)
+ (mm-url-insert more))))
;; Return the articles in the right order.
(setq nnweb-articles
(sort nnweb-articles 'car-less-than-car))))))
"?"
(mm-url-encode-www-form-urlencoded
`(("q" . ,search)
- ("num". "100")
+ ("num" . "100")
("hq" . "")
- ("hl" . "")
+ ("hl" . "en")
("lr" . "")
("safe" . "off")
("sites" . "groups")))))
(match-string 1 url)
url))
+;;;
+;;; gmane.org
+;;;
+(defun nnweb-gmane-create-mapping ()
+ "Perform the search and create a number-to-url alist."
+ (save-excursion
+ (set-buffer nnweb-buffer)
+ (erase-buffer)
+ (when (funcall (nnweb-definition 'search) nnweb-search)
+ (let ((more t)
+ (case-fold-search t)
+ (active (or (cadr (assoc nnweb-group nnweb-group-alist))
+ (cons 1 0)))
+ subject group url
+ map)
+ ;; Remove stuff from the beginning of results
+ (goto-char (point-min))
+ (search-forward "Search Results</h1><ul>" nil t)
+ (delete-region (point-min) (point))
+ (goto-char (point-min))
+ ;; Iterate over the actual hits
+ (while (re-search-forward ".*href=\"\\([^\"]+\\)\">\\(.*\\)" nil t)
+ (setq url (concat "http://gmane.org/" (match-string 1)))
+ (setq subject (match-string 2))
+ (unless (nnweb-get-hashtb url)
+ (push
+ (list
+ (incf (cdr active))
+ (make-full-mail-header
+ (cdr active) (concat "(" group ") " subject) nil nil
+ nil nil 0 0 url))
+ map)
+ (nnweb-set-hashtb (cadar map) (car map))))
+ ;; Return the articles in the right order.
+ (setq nnweb-articles
+ (sort (nconc nnweb-articles map) 'car-less-than-car))))))
+
+(defun nnweb-gmane-wash-article ()
+ (let ((case-fold-search t))
+ (goto-char (point-min))
+ (search-forward "<!--X-Head-of-Message-->" nil t)
+ (delete-region (point-min) (point))
+ (goto-char (point-min))
+ (while (looking-at "^<li><em>\\([^ ]+\\)</em>.*</li>")
+ (replace-match "\\1\\2" t)
+ (forward-line 1))
+ (mm-url-remove-markup)))
+
+(defun nnweb-gmane-search (search)
+ (mm-url-insert
+ (concat
+ (nnweb-definition 'address)
+ "?"
+ (mm-url-encode-www-form-urlencoded
+ `(("query" . ,search)))))
+ (setq buffer-file-name nil)
+ t)
+
+
+(defun nnweb-gmane-identity (url)
+ "Return a unique identifier based on URL."
+ (if (string-match "group=\\(.+\\)" url)
+ (match-string 1 url)
+ url))
+
;;;
;;; General web/w3 interface utility functions
;;;
(nth 1 parse)
" "))
(insert ">\n")
- (mapcar 'nnweb-insert-html (nth 2 parse))
+ (mapc 'nnweb-insert-html (nth 2 parse))
(insert "</" (symbol-name (car parse)) ">\n")))
(defun nnweb-parse-find (type parse &optional maxdepth)
(provide 'nnweb)
+;;; arch-tag: f59307eb-c90f-479f-b7d2-dbd8bf51b697
;;; nnweb.el ends here
projects / gnus / blobdiff