;;; 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
;;; Commentary:
-;; Note: You need to have `url' and `w3' installed for this
-;; backend to work.
+;; Note: You need to have `w3' installed for some functions to work.
;;; Code:
(require 'gnus)
(require 'nnmail)
(require 'mm-util)
-(eval-when-compile
- (ignore-errors
- (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)))
+(require 'mm-url)
+(autoload 'w3-parse-buffer "w3-parse")
(nnoo-declare nnweb)
(defvoo nnweb-directory (nnheader-concat gnus-directory "nnweb/")
"Where nnweb will save its files.")
-(defvoo nnweb-type 'dejanews
+(defvoo nnweb-type 'google
"What search engine type is being used.
-Valid types include `dejanews', `dejanewsold', `reference',
+Valid types include `google', `dejanews', `dejanewsold', `reference',
and `altavista'.")
(defvar nnweb-type-definition
- '((dejanews
+ '(
+ (google
+ ;;(article . nnweb-google-wash-article)
+ ;;(id . "http://groups.google.com/groups?as_umsgid=%s")
(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
+ (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")
+ (identifier . nnweb-google-identity))
+ (dejanews ;; alias of google
+ ;;(article . nnweb-google-wash-article)
+ ;;(id . "http://groups.google.com/groups?as_umsgid=%s")
(article . ignore)
- (map . nnweb-dejanews-create-mapping)
- (search . nnweb-dejanewsold-search)
- (address . "http://www.deja.com/dnquery.xp")
- (identifier . nnweb-dejanews-identity))
+ (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")
+ (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))
+ (if nnweb-ephemeral-p
+ (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"))
(url (and header (mail-header-xref header))))
(when (or (and url
(mm-with-unibyte-current-buffer
- (nnweb-fetch-url url)))
+ (mm-url-insert url)))
(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 art))
+ (mm-with-unibyte-current-buffer
+ (mm-url-insert url))
+ (if (nnweb-definition 'reference t)
+ (setq article
+ (funcall (nnweb-definition
+ 'reference) article)))))))
(unless nnheader-callback-function
- (funcall (nnweb-definition 'article))
- (nnweb-decode-entities))
+ (funcall (nnweb-definition 'article)))
(nnheader-report 'nnweb "Fetched article %s" article)
- t))))
+ (cons group (and (numberp article) article))))))
(deffoo nnweb-close-server (&optional server)
(when (and (nnweb-server-opened server)
t))
(deffoo nnweb-request-update-info (group info &optional server)
- (nnweb-possibly-change-server group server)
- ;;(setcar (cddr info) nil)
- )
+ (nnweb-possibly-change-server group server))
(deffoo nnweb-asynchronous-p ()
t)
(nnweb-open-server server)))
(unless nnweb-group-alist
(nnweb-read-active))
+ (unless nnweb-hashtb
+ (setq nnweb-hashtb (gnus-make-hashtable 4095)))
(when group
(when (and (not nnweb-ephemeral-p)
- (not (equal group nnweb-group)))
+ (equal group nnweb-group))
(nnweb-request-group group nil t))))
(defun nnweb-init (server)
(unless (gnus-buffer-live-p nnweb-buffer)
(setq nnweb-buffer
(save-excursion
- (let ((multibyte (default-value 'enable-multibyte-characters)))
- (unwind-protect
- (progn
- (setq-default enable-multibyte-characters nil)
- (nnheader-set-temp-buffer
- (format " *nnweb %s %s %s*"
- nnweb-type nnweb-search server)))
- (setq-default enable-multibyte-characters multibyte))
+ (mm-with-unibyte
+ (nnheader-set-temp-buffer
+ (format " *nnweb %s %s %s*"
+ 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))
- (setq-default url-be-asynchronous old-asynch)))
+;; (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.
(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
;; Yup -- fetch it.
(setq more (match-string 1))
(erase-buffer)
- (url-insert-file-contents more)))
+ (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)
- (nnweb-insert
+ (mm-url-insert
(concat
(nnweb-definition 'address)
"?"
- (nnweb-encode-www-form-urlencoded
+ (mm-url-encode-www-form-urlencoded
`(("ST" . "PS")
("svcclass" . "dnyr")
("QRY" . ,search)
("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-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."
(goto-char (point-min))
(search-forward "</pre><hr>" nil t)
(delete-region (point-min) (point))
- ;(nnweb-decode-entities)
(goto-char (point-min))
(while (re-search-forward "^ +[0-9]+\\." nil t)
(narrow-to-region
(goto-char (point-min))
(when (looking-at ".*href=\"\\([^\"]+\\)\"")
(setq url (match-string 1)))
- (nnweb-remove-markup)
+ (mm-url-remove-markup)
(goto-char (point-min))
(while (search-forward "\t" nil t)
(replace-match " "))
(let ((body (point-marker)))
(search-forward "</pre>" nil t)
(delete-region (point) (point-max))
- (nnweb-remove-markup)
+ (mm-url-remove-markup)
(goto-char (point-min))
(while (looking-at " *$")
(gnus-delete-line))
(while (search-forward "," nil t)
(replace-match " " t t)))
(widen)
+ (mm-url-decode-entities)
(set-marker body nil))))
(defun nnweb-reference-search (search)
- (url-insert-file-contents
+ (mm-url-insert
(concat
(nnweb-definition 'address)
"?"
- (nnweb-encode-www-form-urlencoded
+ (mm-url-encode-www-form-urlencoded
`(("search" . "advanced")
("querytext" . ,search)
("subj" . "")
(goto-char (point-min))
(while (search-forward "<dt>" nil t)
(replace-match "\n<blubb>"))
- (nnweb-decode-entities)
+ (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)
(while (re-search-forward "<A.*\\?id@\\([^\"]+\\)\">[0-9]+</A>" nil t)
(replace-match "<\\1> " t)))
(widen)
- (nnweb-remove-markup)))
+ (mm-url-remove-markup)
+ (mm-url-decode-entities)))
(defun nnweb-altavista-search (search &optional part)
- (url-insert-file-contents
+ (mm-url-insert
(concat
(nnweb-definition 'address)
"?"
- (nnweb-encode-www-form-urlencoded
+ (mm-url-encode-www-form-urlencoded
`(("pg" . "aq")
("what" . "news")
,@(when part `(("stq" . ,(int-to-string (* part 30)))))
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)))
+
+(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 mid)
+ (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\\(\\?[^ \">]*selm=\\([^ &\">]+\\)\\)" nil t)
+ (setq mid (match-string 2)
+ url (format
+ "http://groups.google.com/groups?selm=%s&output=gplain" mid))
+ (narrow-to-region (search-forward ">" nil t)
+ (search-forward "</a>" nil t))
+ (mm-url-remove-markup)
+ (mm-url-decode-entities)
+ (setq Subject (buffer-string))
+ (goto-char (point-max))
+ (widen)
+ (forward-line 1)
+ (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))
+ (mm-url-remove-markup)
+ (mm-url-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 (or Message-ID mid)
+ 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
+ (mm-url-insert (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)
+ (mm-url-insert
+ (concat
+ (nnweb-definition 'address)
+ "?"
+ (mm-url-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 "selm=\\([^ &>]+\\)" 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)
(mapcar 'nnweb-insert-html (nth 2 parse))
(insert "</" (symbol-name (car parse)) ">\n")))
-(defun nnweb-encode-www-form-urlencoded (pairs)
- "Return PAIRS encoded for forms."
- (mapconcat
- (function
- (lambda (data)
- (concat (w3-form-encode-xwfu (car data)) "="
- (w3-form-encode-xwfu (cdr data)))))
- pairs "&"))
-
-(defun nnweb-fetch-form (url pairs)
- "Fetch a form from URL with PAIRS as the data using the POST method."
- (let ((url-request-data (nnweb-encode-www-form-urlencoded pairs))
- (url-request-method "POST")
- (url-request-extra-headers
- '(("Content-type" . "application/x-www-form-urlencoded"))))
- (url-insert-file-contents url)
- (setq buffer-file-name nil))
- t)
-
-(defun nnweb-decode-entities ()
- "Decode all HTML entities."
- (goto-char (point-min))
- (while (re-search-forward "&\\([a-z]+\\);" nil t)
- (replace-match (char-to-string (or (cdr (assq (intern (match-string 1))
- w3-html-entities))
- ?#))
- t t)))
-
-(defun nnweb-remove-markup ()
- "Remove all HTML markup, leaving just plain text."
- (goto-char (point-min))
- (while (search-forward "<!--" nil t)
- (delete-region (match-beginning 0)
- (or (search-forward "-->" nil t)
- (point-max))))
- (goto-char (point-min))
- (while (re-search-forward "<[^>]+>" nil t)
- (replace-match "" t t)))
-
-(defun nnweb-insert (url)
- "Insert the contents from an URL in the current buffer."
- (let ((name buffer-file-name))
- (url-insert-file-contents url)
- (setq buffer-file-name name)))
-
(defun nnweb-parse-find (type parse &optional maxdepth)
"Find the element of TYPE in PARSE."
(catch 'found
projects / elisp / gnus.git- / blobdiff