;;; nnweb.el --- retrieving articles via web search engines
-;; Copyright (C) 1996,97,98 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 'message)
(require 'gnus-util)
(require 'gnus)
-(require 'w3)
-(require 'url)
(require 'nnmail)
-(ignore-errors
- (require 'w3-forms))
+(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.
+(unless noninteractive
+ (eval '(progn
+ (require 'w3)
+ (require 'url)
+ (require 'w3-forms))))
(nnoo-declare nnweb)
Valid types include `dejanews', `dejanewsold', `reference',
and `altavista'.")
-(defvoo nnweb-type-definition
- '((dejanews
- (article . nnweb-dejanews-wash-article)
- (map . nnweb-dejanews-create-mapping)
- (search . nnweb-dejanews-search)
- (address . "http://x8.dejanews.com/dnquery.xp")
- (identifier . nnweb-dejanews-identity))
- (dejanewsold
- (article . nnweb-dejanews-wash-article)
- (map . nnweb-dejanews-create-mapping)
- (search . nnweb-dejanewsold-search)
- (address . "http://x8.dejanews.com/dnquery.xp")
- (identifier . nnweb-dejanews-identity))
+(defvar nnweb-type-definition
+ '(
+ (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)
(set-buffer nntp-server-buffer)
(erase-buffer)
(let (article header)
- (while (setq article (pop articles))
- (when (setq header (cadr (assq article nnweb-articles)))
- (nnheader-insert-nov header)))
+ (mm-with-unibyte-current-buffer
+ (while (setq article (pop articles))
+ (when (setq header (cadr (assq article nnweb-articles)))
+ (nnheader-insert-nov header))))
'nov)))
(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)))
- (setq nnweb-group group)
- (setq nnweb-type (nth 2 info))
- (setq nnweb-search (nth 3 info))
- (unless dont-check
- (nnweb-read-overview group))))
+ (when info
+ (setq nnweb-type (nth 2 info))
+ (setq nnweb-search (nth 3 info))
+ (unless dont-check
+ (nnweb-read-overview group)))))
(cond
((not nnweb-articles)
(nnheader-report 'nnweb "No matching articles"))
(let* ((header (cadr (assq article nnweb-articles)))
(url (and header (mail-header-xref header))))
(when (or (and url
- (nnweb-fetch-url url))
+ (mm-with-unibyte-current-buffer
+ (nnweb-fetch-url 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
- (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))
(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)
(deffoo nnweb-request-delete-group (group &optional force server)
(nnweb-possibly-change-server group server)
- (gnus-pull group nnweb-group-alist)
+ (gnus-pull group nnweb-group-alist t)
+ (nnweb-write-active)
(gnus-delete-file (nnweb-overview-file group))
t)
(defun nnweb-read-overview (group)
"Read the overview of GROUP and build the map."
(when (file-exists-p (nnweb-overview-file group))
- (nnheader-temp-write nil
+ (mm-with-unibyte-buffer
(nnheader-insert-file-contents (nnweb-overview-file group))
(goto-char (point-min))
(let (header)
(defun nnweb-write-overview (group)
"Write the overview file for GROUP."
- (nnheader-temp-write (nnweb-overview-file group)
+ (with-temp-file (nnweb-overview-file group)
(let ((articles nnweb-articles))
(while articles
(nnheader-insert-nov (cadr (pop articles)))))))
(defun nnweb-write-active ()
"Save the active file."
- (nnheader-temp-write (nnheader-concat nnweb-directory "active")
+ (gnus-make-directory nnweb-directory)
+ (with-temp-file (nnheader-concat nnweb-directory "active")
(prin1 `(setq nnweb-group-alist ',nnweb-group-alist) (current-buffer))))
(defun nnweb-read-active ()
(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)
(unless (gnus-buffer-live-p nnweb-buffer)
(setq nnweb-buffer
(save-excursion
- (nnheader-set-temp-buffer
- (format " *nnweb %s %s %s*" nnweb-type nnweb-search server))))))
+ (mm-with-unibyte
+ (nnheader-set-temp-buffer
+ (format " *nnweb %s %s %s*"
+ nnweb-type nnweb-search server))
+ (current-buffer))))))
(defun nnweb-fetch-url (url)
- (save-excursion
- (if (not nnheader-callback-function)
- (let ((buf (current-buffer)))
- (save-excursion
- (set-buffer nnweb-buffer)
+ (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)
- (url-insert-file-contents url)
- (copy-to-buffer buf (point-min) (point-max))
- t))
- (nnweb-url-retrieve-asynch
- url 'nnweb-callback (current-buffer) nnheader-callback-function)
- t)))
+ (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)
(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)))
-(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)
- (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 ()
- (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 ()
- (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)))
+(if (fboundp 'url-retrieve-synchronously)
+ (defun nnweb-url-retrieve-asynch (url callback &rest data)
+ (url-retrieve url callback data)))
;;;
;;; DejaNews functions.
(case-fold-search t)
(active (or (cadr (assoc nnweb-group nnweb-group-alist))
(cons 1 0)))
- Subject (Score "0") Date Newsgroup Author
- map url)
+ 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))
- (nnweb-decode-entities)
- (goto-char (point-min))
- (while (re-search-forward "^ <P>\n" nil t)
- (narrow-to-region
- (point)
- (cond ((re-search-forward "^ <P>\n" nil t)
- (match-beginning 0))
- ((search-forward "\n\n" nil t)
- (point))
- (t
- (point-max))))
- (goto-char (point-min))
- (looking-at ".*HREF=\"\\([^\"]+\\)\"\\(.*\\)")
- (setq url (match-string 1))
- (let ((begin (point)))
- (nnweb-remove-markup)
- (goto-char begin)
- (while (search-forward "\t" nil t)
- (replace-match " "))
- (goto-char begin)
- (end-of-line)
- (setq Subject (buffer-substring begin (point)))
- (if (re-search-forward
- "^ Newsgroup: \\(.*\\)\n Posted on \\([0-9/]+\\) by \\(.*\\)$" nil t)
- (setq Newsgroup (match-string 1)
- Date (match-string 2)
- Author (match-string 3))))
- (widen)
- (incf i)
- (unless (nnweb-get-hashtb url)
- (push
- (list
- (incf (cdr active))
- (make-full-mail-header
- (cdr active) Subject Author Date
- (concat "<" (nnweb-identifier url) "@dejanews>")
- nil 0 (string-to-int Score) url))
- map)
- (nnweb-set-hashtb (cadar map) (car map))))
+ (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 nnweb-articles
(sort (nconc nnweb-articles map) 'car-less-than-car))))))
-(defun nnweb-dejanews-wash-article ()
- (let ((case-fold-search t))
- (goto-char (point-min))
- (re-search-forward "<PRE>" nil t)
- (delete-region (point-min) (point))
- (re-search-forward "</PRE>" nil t)
- (delete-region (point) (point-max))
- (nnweb-remove-markup)
- (goto-char (point-min))
- (while (and (looking-at " *$")
- (not (eobp)))
- (gnus-delete-line))
- (while (looking-at "\\(^[^ ]+:\\) *")
- (replace-match "\\1 " t)
- (forward-line 1))
- (when (re-search-forward "\n\n+" nil t)
- (replace-match "\n" t t))
- (goto-char (point-min))
- (when (search-forward "[More Headers]" nil t)
- (replace-match "" t t))))
-
(defun nnweb-dejanews-search (search)
- (nnweb-fetch-form
- (nnweb-definition 'address)
- `(("query" . ,search)
- ("defaultOp" . "AND")
- ("svcclass" . "dncurrent")
- ("maxhits" . "100")
- ("format" . "verbose2")
- ("threaded" . "0")
- ("showsort" . "date")
- ("agesign" . "1")
- ("ageweight" . "1")))
+ (nnweb-insert
+ (concat
+ (nnweb-definition 'address)
+ "?"
+ (nnweb-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)
(defun nnweb-dejanews-identity (url)
"Return an unique identifier based on URL."
- (if (string-match "recnum=\\([0-9]+\\)" url)
+ (if (string-match "AN=\\([0-9]+\\)" url)
(match-string 1 url)
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
(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 (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 (nnheader-string-as-multibyte parse))
+ (insert "<" (symbol-name (car parse)) " ")
+ (insert (mapconcat
+ (lambda (param)
+ (concat (symbol-name (car param)) "="
+ (prin1-to-string
+ (if (consp (cdr param))
+ (cadr param)
+ (cdr param)))))
+ (nth 1 parse)
+ " "))
+ (insert ">\n")
+ (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 "&\\(#[0-9]+\\|[a-z]+\\);" nil t)
+ (let ((elem (if (eq (aref (match-string 1) 0) ?\#)
+ (let ((c
+ (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))
+ ?#))))
+ (unless (stringp elem)
+ (setq elem (char-to-string elem)))
+ (replace-match elem t t))))
+
+(defun nnweb-decode-entities-string (string)
+ (with-temp-buffer
+ (insert string)
+ (nnweb-decode-entities)
+ (buffer-substring (point-min) (point-max))))
+
+(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 &optional follow-refresh)
+ "Insert the contents from an URL in the current buffer.
+If FOLLOW-REFRESH is non-nil, redirect refresh url in META."
+ (let ((name buffer-file-name))
+ (if follow-refresh
+ (save-restriction
+ (narrow-to-region (point) (point))
+ (url-insert-file-contents url)
+ (goto-char (point-min))
+ (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))))
+ (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
+ (nnweb-parse-find-1 type parse maxdepth)))
+
+(defun nnweb-parse-find-1 (type contents maxdepth)
+ (when (or (null maxdepth)
+ (not (zerop maxdepth)))
+ (when (consp contents)
+ (when (eq (car contents) type)
+ (throw 'found contents))
+ (when (listp (cdr contents))
+ (dolist (element contents)
+ (when (consp element)
+ (nnweb-parse-find-1 type element
+ (and maxdepth (1- maxdepth)))))))))
+
+(defun nnweb-parse-find-all (type parse)
+ "Find all elements of TYPE in PARSE."
+ (catch 'found
+ (nnweb-parse-find-all-1 type parse)))
+
+(defun nnweb-parse-find-all-1 (type contents)
+ (let (result)
+ (when (consp contents)
+ (if (eq (car contents) type)
+ (push contents result)
+ (when (listp (cdr contents))
+ (dolist (element contents)
+ (when (consp element)
+ (setq result
+ (nconc result (nnweb-parse-find-all-1 type element))))))))
+ result))
+
+(defvar nnweb-text)
+(defun nnweb-text (parse)
+ "Return a list of text contents in PARSE."
+ (let ((nnweb-text nil))
+ (nnweb-text-1 parse)
+ (nreverse nnweb-text)))
+
+(defun nnweb-text-1 (contents)
+ (dolist (element contents)
+ (if (stringp element)
+ (push element nnweb-text)
+ (when (and (consp element)
+ (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