;;; nnweb.el --- retrieving articles via web search engines
-;; Copyright (C) 1996,97,98,99 Free Software Foundation, Inc.
+;; Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001
+;; Free Software Foundation, Inc.
;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
;; Keywords: news
(require 'w3)
(require 'url)
(require 'w3-forms)))
+
;; Report failure to find w3 at load time if appropriate.
-(eval '(progn
- (require 'w3)
- (require 'url)
- (require 'w3-forms)))
+(unless noninteractive
+ (eval '(progn
+ (require 'w3)
+ (require 'url)
+ (require 'w3-forms))))
(nnoo-declare nnweb)
and `altavista'.")
(defvar nnweb-type-definition
- '((dejanews
- (article . ignore)
- (id . "http://search.dejanews.com/msgid.xp?MID=%s&fmt=text")
- (map . nnweb-dejanews-create-mapping)
- (search . nnweb-dejanews-search)
- (address . "http://www.deja.com/=dnc/qs.xp")
- (identifier . nnweb-dejanews-identity))
- (dejanewsold
- (article . ignore)
- (map . nnweb-dejanews-create-mapping)
- (search . nnweb-dejanewsold-search)
- (address . "http://www.deja.com/dnquery.xp")
- (identifier . nnweb-dejanews-identity))
+ '(
+ (dejanews ;; bought by google.com
+ (article . nnweb-google-wash-article)
+ (id . "http://groups.google.com/groups?as_umsgid=%s")
+ (reference . nnweb-google-reference)
+ (map . nnweb-google-create-mapping)
+ (search . nnweb-google-search)
+ (address . "http://groups.google.com/groups")
+ (identifier . nnweb-google-identity))
+;;; (dejanews
+;;; (article . ignore)
+;;; (id . "http://search.dejanews.com/msgid.xp?MID=%s&fmt=text")
+;;; (map . nnweb-dejanews-create-mapping)
+;;; (search . nnweb-dejanews-search)
+;;; (address . "http://www.deja.com/=dnc/qs.xp")
+;;; (identifier . nnweb-dejanews-identity))
+;;; (dejanewsold
+;;; (article . ignore)
+;;; (map . nnweb-dejanews-create-mapping)
+;;; (search . nnweb-dejanewsold-search)
+;;; (address . "http://www.deja.com/dnquery.xp")
+;;; (identifier . nnweb-dejanews-identity))
(reference
(article . nnweb-reference-wash-article)
(map . nnweb-reference-create-mapping)
(deffoo nnweb-request-scan (&optional group server)
(nnweb-possibly-change-server group server)
- (setq nnweb-hashtb (gnus-make-hashtable 4095))
(funcall (nnweb-definition 'map))
(unless nnweb-ephemeral-p
(nnweb-write-active)
(when (and group
(not (equal group nnweb-group))
(not nnweb-ephemeral-p))
+ (setq nnweb-group group
+ nnweb-articles nil)
(let ((info (assoc group nnweb-group-alist)))
(when info
- (setq nnweb-group group)
(setq nnweb-type (nth 2 info))
(setq nnweb-search (nth 3 info))
(unless dont-check
(nnweb-read-overview group)))))
- (unless dont-check
- (nnweb-request-scan group))
(cond
((not nnweb-articles)
(nnheader-report 'nnweb "No matching articles"))
(and (stringp article)
(nnweb-definition 'id t)
(let ((fetch (nnweb-definition 'id))
- art)
+ art active)
(when (string-match "^<\\(.*\\)>$" article)
(setq art (match-string 1 article)))
- (and fetch
- art
- (mm-with-unibyte-current-buffer
- (nnweb-fetch-url
- (format fetch article)))))))
+ (when (and fetch art)
+ (setq url (format fetch article))
+ (mm-with-unibyte-current-buffer
+ (nnweb-fetch-url url))
+ (if (nnweb-definition 'reference t)
+ (setq article
+ (funcall (nnweb-definition
+ 'reference) article)))))))
(unless nnheader-callback-function
(funcall (nnweb-definition 'article))
(nnweb-decode-entities))
(when group
(when (and (not nnweb-ephemeral-p)
(not (equal group nnweb-group)))
+ (setq nnweb-hashtb (gnus-make-hashtable 4095))
(nnweb-request-group group nil t))))
(defun nnweb-init (server)
(setq url-current-callback-data data
url-be-asynchronous t
url-current-callback-func callback)
- (url-retrieve url))
+ (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.
;;;
(car (rassq (string-to-number
(match-string 2 date))
parse-time-months))
- (match-string 3 date)
+ (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
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 (search-forward "[view thread]" nil t)
+ (replace-match ""))
+ (goto-char (point-min))
+ (while (search-forward "<br>" nil t)
+ (replace-match "\n"))
+ (nnweb-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))
+ (nnweb-remove-markup)
+ (widen)))
+
+(defun nnweb-google-parse-1 (&optional Message-ID)
+ (let ((i 0)
+ (case-fold-search t)
+ (active (cadr (assoc nnweb-group nnweb-group-alist)))
+ Subject Score Date Newsgroups From
+ map url)
+ (unless active
+ (push (list nnweb-group (setq active (cons 1 0))
+ nnweb-type nnweb-search)
+ nnweb-group-alist))
+ ;; Go through all the article hits on this page.
+ (goto-char (point-min))
+ (while (re-search-forward
+ "a href=/groups\\(\\?[^ \">]*seld=[0-9]+[^ \">]*\\)" nil t)
+ (setq url
+ (concat (nnweb-definition 'address)
+ (match-string 1)))
+ (narrow-to-region (search-forward ">" nil t)
+ (search-forward "</a>" nil t))
+ (nnweb-remove-markup)
+ (nnweb-decode-entities)
+ (setq Subject (buffer-string))
+ (goto-char (point-max))
+ (widen)
+ (forward-line 2)
+ (when (looking-at "<br><font[^>]+>")
+ (goto-char (match-end 0)))
+ (if (not (looking-at "<a[^>]+>"))
+ (skip-chars-forward " \t")
+ (narrow-to-region (point)
+ (search-forward "</a>" nil t))
+ (nnweb-remove-markup)
+ (nnweb-decode-entities)
+ (setq Newsgroups (buffer-string))
+ (goto-char (point-max))
+ (widen)
+ (skip-chars-forward "- \t"))
+ (when (looking-at
+ "\\([0-9]+/[A-Za-z]+/[0-9]+\\)[ \t]*by[ \t]*\\([^<]*\\) - <a")
+ (setq From (match-string 2)
+ Date (match-string 1)))
+ (forward-line 1)
+ (incf i)
+ (unless (nnweb-get-hashtb url)
+ (push
+ (list
+ (incf (cdr active))
+ (make-full-mail-header
+ (cdr active) (if Newsgroups
+ (concat "(" Newsgroups ") " Subject)
+ Subject)
+ From Date Message-ID
+ nil 0 0 url))
+ map)
+ (nnweb-set-hashtb (cadar map) (car map))))
+ map))
+
+(defun nnweb-google-reference (id)
+ (let ((map (nnweb-google-parse-1 id)) header)
+ (setq nnweb-articles
+ (nconc nnweb-articles map))
+ (when (setq header (cadar map))
+ (mm-with-unibyte-current-buffer
+ (nnweb-fetch-url (mail-header-xref header)))
+ (caar map))))
+
+(defun nnweb-google-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 ((more t))
+ (while more
+ (setq nnweb-articles
+ (nconc nnweb-articles (nnweb-google-parse-1)))
+ ;; FIXME: There is more.
+ (setq more nil))
+ ;; Return the articles in the right order.
+ (setq nnweb-articles
+ (sort nnweb-articles 'car-less-than-car))))))
+
+(defun nnweb-google-search (search)
+ (nnweb-insert
+ (concat
+ (nnweb-definition 'address)
+ "?"
+ (nnweb-encode-www-form-urlencoded
+ `(("q" . ,search)
+ ("num". "100")
+ ("hq" . "")
+ ("hl" . "")
+ ("lr" . "")
+ ("safe" . "off")
+ ("sites" . "groups")))))
+ t)
+
+(defun nnweb-google-identity (url)
+ "Return an unique identifier based on URL."
+ (if (string-match "seld=\\([0-9]+\\)" url)
+ (match-string 1 url)
+ url))
+
+;;;
;;; General web/w3 interface utility functions
;;;
(defun nnweb-insert-html (parse)
"Insert HTML based on a w3 parse tree."
(if (stringp parse)
- (insert parse)
+ (insert (nnheader-string-as-multibyte parse))
(insert "<" (symbol-name (car parse)) " ")
(insert (mapconcat
(lambda (param)
"Decode all HTML entities."
(goto-char (point-min))
(while (re-search-forward "&\\(#[0-9]+\\|[a-z]+\\);" nil t)
- (replace-match (char-to-string
- (if (eq (aref (match-string 1) 0) ?\#)
+ (let ((elem (if (eq (aref (match-string 1) 0) ?\#)
(let ((c
- (string-to-number (substring
+ (string-to-number (substring
(match-string 1) 1))))
(if (mm-char-or-char-int-p c) c 32))
(or (cdr (assq (intern (match-string 1))
w3-html-entities))
- ?#)))
- t t)))
+ ?#))))
+ (unless (stringp elem)
+ (setq elem (char-to-string elem)))
+ (replace-match elem t t))))
-(defun nnweb-decode-entities-string (str)
+(defun nnweb-decode-entities-string (string)
(with-temp-buffer
- (insert str)
+ (insert string)
(nnweb-decode-entities)
(buffer-substring (point-min) (point-max))))
(narrow-to-region (point) (point))
(url-insert-file-contents url)
(goto-char (point-min))
- (when (re-search-forward
- "HTTP-EQUIV=\"Refresh\"[^>]*URL=\\([^\"]+\\)\"" nil t)
+ (when (re-search-forward
+ "<meta[ \t\r\n]*http-equiv=\"Refresh\"[^>]*URL=\\([^\"]+\\)\"" nil t)
(let ((url (match-string 1)))
(delete-region (point-min) (point-max))
(nnweb-insert url t))))
(listp (cdr element)))
(nnweb-text-1 element)))))
+(defun nnweb-replace-in-string (string match newtext)
+ (while (string-match match string)
+ (setq string (replace-match newtext t t string)))
+ string)
+
(provide 'nnweb)
;;; nnweb.el ends here
projects / elisp / gnus.git- / blobdiff