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|
;;; nnslashdot.el --- interfacing with Slashdot
;; Copyright (C) 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
;; Keywords: news
;; This file is part of GNU Emacs.
;; GNU Emacs is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation; either version 2, or (at your option)
;; any later version.
;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; 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.
;;; Commentary:
;; Note: You need to have `url' and `w3' installed for this
;; backend to work.
;;; Code:
(eval-when-compile (require 'cl))
(require 'nnoo)
(require 'message)
(require 'gnus-util)
(require 'gnus)
(require 'nnmail)
(require 'mm-util)
(eval-when-compile
(ignore-errors
(require 'nnweb)))
;; Report failure to find w3 at load time if appropriate.
(eval '(require 'nnweb))
(nnoo-declare nnslashdot)
(defvoo nnslashdot-directory (nnheader-concat gnus-directory "slashdot/")
"Where nnslashdot will save its files.")
(defvoo nnslashdot-active-url "http://slashdot.org/search.pl?section=&min=%d"
"Where nnslashdot will fetch the active file from.")
(defvoo nnslashdot-comments-url "http://slashdot.org/comments.pl?sid=%s&threshold=%d&commentsort=%d&mode=flat&startat=%d"
"Where nnslashdot will fetch comments from.")
(defvoo nnslashdot-article-url
"http://slashdot.org/article.pl?sid=%s&mode=nocomment"
"Where nnslashdot will fetch the article from.")
(defvoo nnslashdot-backslash-url "http://slashdot.org/slashdot.xml"
"Where nnslashdot will fetch the stories from.")
(defvoo nnslashdot-threshold -1
"The article threshold.")
(defvoo nnslashdot-threaded t
"Whether the nnslashdot groups should be threaded or not.")
(defvoo nnslashdot-group-number 0
"The number of non-fresh groups to keep updated.")
(defvoo nnslashdot-login-name ""
"The login name to use when posting.")
(defvoo nnslashdot-password ""
"The password to use when posting.")
;;; Internal variables
(defvar nnslashdot-groups nil)
(defvar nnslashdot-buffer nil)
(defvar nnslashdot-headers nil)
;;; Interface functions
(nnoo-define-basics nnslashdot)
(deffoo nnslashdot-retrieve-headers (articles &optional group server fetch-old)
(nnslashdot-possibly-change-server group server)
(condition-case why
(unless gnus-nov-is-evil
(nnslashdot-retrieve-headers-1 articles group))
(search-failed (nnslashdot-lose why))))
(deffoo nnslashdot-retrieve-headers-1 (articles group)
(let* ((last (car (last articles)))
(start (if nnslashdot-threaded 1 (pop articles)))
(entry (assoc group nnslashdot-groups))
(sid (nth 2 entry))
(first-comments t)
headers article subject score from date lines parent point cid
s startats changed)
(save-excursion
(set-buffer nnslashdot-buffer)
(let ((case-fold-search t))
(erase-buffer)
(when (= start 1)
(nnweb-insert (format nnslashdot-article-url
(nnslashdot-sid-strip sid)) t)
(goto-char (point-min))
(re-search-forward "Posted by[ \t\r\n]+")
(when (looking-at "\\(<a[^>]+>\\)?[ \t\r\n]*\\([^<\r\n]+\\)")
(setq from (nnweb-decode-entities-string (match-string 2))))
(search-forward "on ")
(setq date (nnslashdot-date-to-date
(buffer-substring (point) (1- (search-forward "<")))))
(setq lines (/ (- (point)
(progn (forward-line 1) (point)))
60))
(push
(cons
1
(make-full-mail-header
1 group from date
(concat "<" (nnslashdot-sid-strip sid) "%1@slashdot>")
"" 0 lines nil nil))
headers)
(setq start (if nnslashdot-threaded 2 (pop articles))))
(while (and start (<= start last))
(setq point (goto-char (point-max)))
(nnweb-insert
(format nnslashdot-comments-url
(nnslashdot-sid-strip sid)
nnslashdot-threshold 0 (- start 2))
t)
(when (and nnslashdot-threaded first-comments)
(setq first-comments nil)
(goto-char (point-max))
(while (re-search-backward "startat=\\([0-9]+\\)" nil t)
(setq s (string-to-number (match-string 1)))
(unless (memq s startats)
(push s startats)))
(setq startats (sort startats '<)))
(setq article (if (and article (< start article)) article start))
(goto-char point)
(while (re-search-forward
"<a name=\"\\([0-9]+\\)\"><\\(b\\|H4\\)>\\([^<]+\\)</\\(b\\|H4\\)>.*score:\\([^)]+\\))"
nil t)
(setq cid (match-string 1)
subject (match-string 3)
score (match-string 5))
(unless (assq article (nth 4 entry))
(setcar (nthcdr 4 entry) (cons (cons article cid) (nth 4 entry)))
(setq changed t))
(when (string-match "^Re: *" subject)
(setq subject (concat "Re: " (substring subject (match-end 0)))))
(setq subject (nnweb-decode-entities-string subject))
(search-forward "<BR>")
(if (looking-at
"by[ \t\n]+<a[^>]+>\\([^<]+\\)</a>[ \t\n]*(\\(<[^>]+>\\)*\\([^<>)]+\\))")
(progn
(goto-char (- (match-end 0) 5))
(setq from (concat
(nnweb-decode-entities-string (match-string 1))
" <" (match-string 3) ">")))
(setq from "")
(when (looking-at "by \\([^<>]*\\) on ")
(goto-char (- (match-end 0) 5))
(setq from (nnweb-decode-entities-string (match-string 1)))))
(search-forward " on ")
(setq date
(nnslashdot-date-to-date
(buffer-substring (point) (progn (skip-chars-forward "^()<>\n\r") (point)))))
(setq lines (/ (abs (- (search-forward "<td")
(search-forward "</td>")))
70))
(if (not
(re-search-forward ".*cid=\\([0-9]+\\)\">Parent</A>" nil t))
(setq parent nil)
(setq parent (match-string 1))
(when (string= parent "0")
(setq parent nil)))
(push
(cons
article
(make-full-mail-header
article
(concat subject " (" score ")")
from date
(concat "<" (nnslashdot-sid-strip sid) "%" cid "@slashdot>")
(if parent
(concat "<" (nnslashdot-sid-strip sid) "%"
parent "@slashdot>")
"")
0 lines nil nil))
headers)
(while (and articles (<= (car articles) article))
(pop articles))
(setq article (1+ article)))
(if nnslashdot-threaded
(progn
(setq start (pop startats))
(if start (setq start (+ start 2))))
(setq start (pop articles))))))
(if changed (nnslashdot-write-groups))
(setq nnslashdot-headers (sort headers 'car-less-than-car))
(save-excursion
(set-buffer nntp-server-buffer)
(erase-buffer)
(mm-with-unibyte-current-buffer
(dolist (header nnslashdot-headers)
(nnheader-insert-nov (cdr header)))))
'nov))
(deffoo nnslashdot-request-group (group &optional server dont-check)
(nnslashdot-possibly-change-server nil server)
(let ((elem (assoc group nnslashdot-groups)))
(cond
((not elem)
(nnheader-report 'nnslashdot "Group does not exist"))
(t
(nnheader-report 'nnslashdot "Opened group %s" group)
(nnheader-insert
"211 %d %d %d %s\n" (cadr elem) 1 (cadr elem)
(prin1-to-string group))))))
(deffoo nnslashdot-close-group (group &optional server)
(nnslashdot-possibly-change-server group server)
(when (gnus-buffer-live-p nnslashdot-buffer)
(save-excursion
(set-buffer nnslashdot-buffer)
(kill-buffer nnslashdot-buffer)))
t)
(deffoo nnslashdot-request-article (article &optional group server buffer)
(nnslashdot-possibly-change-server group server)
(let (contents cid)
(condition-case why
(save-excursion
(set-buffer nnslashdot-buffer)
(let ((case-fold-search t))
(goto-char (point-min))
(when (and (stringp article)
(string-match "%\\([0-9]+\\)@" article))
(setq cid (match-string 1 article))
(let ((map (nth 4 (assoc group nnslashdot-groups))))
(while map
(if (equal (cdar map) cid)
(setq article (caar map)
map nil)
(setq map (cdr map))))))
(when (numberp article)
(if (= article 1)
(progn
(re-search-forward
"Posted by")
(search-forward "<BR>")
(setq contents
(buffer-substring
(point)
(progn
(re-search-forward
"< [ \t\r\n]*<A HREF=\"\\(\\(http:\\)?//slashdot\\.org\\)?/article")
(match-beginning 0)))))
(setq cid (cdr (assq article
(nth 4 (assoc group nnslashdot-groups)))))
(search-forward (format "<a name=\"%s\">" cid))
(setq contents
(buffer-substring
(re-search-forward "<td[^>]*>")
(search-forward "</td>")))))))
(search-failed (nnslashdot-lose why)))
(when contents
(save-excursion
(set-buffer (or buffer nntp-server-buffer))
(erase-buffer)
(mm-with-unibyte-current-buffer
(insert contents)
(goto-char (point-min))
(while (re-search-forward "\\(<br>\r?\\)+" nil t)
(replace-match "<p>" t t))
(goto-char (point-min))
(insert "Content-Type: text/html\nMIME-Version: 1.0\n")
(insert "Newsgroups: " (caddr (assoc group nnslashdot-groups))
"\n")
(let ((header (cdr (assq article nnslashdot-headers))))
(nnheader-insert-header header))
(nnheader-report 'nnslashdot "Fetched article %s" article))
(cons group article)))))
(deffoo nnslashdot-close-server (&optional server)
(when (and (nnslashdot-server-opened server)
(gnus-buffer-live-p nnslashdot-buffer))
(save-excursion
(set-buffer nnslashdot-buffer)
(kill-buffer nnslashdot-buffer)))
(nnoo-close-server 'nnslashdot server))
(deffoo nnslashdot-request-list (&optional server)
(nnslashdot-possibly-change-server nil server)
(let ((number 0)
sid elem description articles gname)
(condition-case why
;; First we do the Ultramode to get info on all the latest groups.
(progn
(mm-with-unibyte-buffer
(nnweb-insert nnslashdot-backslash-url t)
(goto-char (point-min))
(while (search-forward "<story>" nil t)
(narrow-to-region (point) (search-forward "</story>"))
(goto-char (point-min))
(re-search-forward "<title>\\([^<]+\\)</title>")
(setq description
(nnweb-decode-entities-string (match-string 1)))
(re-search-forward "<url>\\([^<]+\\)</url>")
(setq sid (match-string 1))
(string-match "sid=\\([0-9/]+\\)\\(.shtml\\|$\\)" sid)
(setq sid (match-string 1 sid))
(re-search-forward "<comments>\\([^<]+\\)</comments>")
(setq articles (string-to-number (match-string 1)))
(setq gname (concat description " (" sid ")"))
(if (setq elem (assoc gname nnslashdot-groups))
(setcar (cdr elem) articles)
(push (list gname articles sid (current-time) nil)
nnslashdot-groups))
(goto-char (point-max))
(widen)))
;; Then do the older groups.
(while (> (- nnslashdot-group-number number) 0)
(mm-with-unibyte-buffer
(let ((case-fold-search t))
(nnweb-insert (format nnslashdot-active-url number) t)
(goto-char (point-min))
(while (re-search-forward
"article.pl\\?sid=\\([^&]+\\).*<b>\\([^<]+\\)</b>"
nil t)
(setq sid (match-string 1)
description
(nnweb-decode-entities-string (match-string 2)))
(forward-line 1)
(when (re-search-forward "<b>\\([0-9]+\\)</b>" nil t)
(setq articles (string-to-number (match-string 1))))
(setq gname (concat description " (" sid ")"))
(if (setq elem (assoc gname nnslashdot-groups))
(setcar (cdr elem) articles)
(push (list gname articles sid (current-time) nil)
nnslashdot-groups)))))
(incf number 30)))
(search-failed (nnslashdot-lose why)))
(nnslashdot-write-groups)
(nnslashdot-generate-active)
t))
(deffoo nnslashdot-request-newgroups (date &optional server)
(nnslashdot-possibly-change-server nil server)
(nnslashdot-generate-active)
t)
(deffoo nnslashdot-request-post (&optional server)
(nnslashdot-possibly-change-server nil server)
(let ((sid (nnslashdot-sid-strip (message-fetch-field "newsgroups")))
(subject (message-fetch-field "subject"))
(references (car (last (split-string
(message-fetch-field "references")))))
body quoted pid)
(string-match "%\\([0-9]+\\)@slashdot" references)
(setq pid (match-string 1 references))
(message-goto-body)
(narrow-to-region (point) (progn (message-goto-signature) (point)))
(goto-char (point-min))
(while (not (eobp))
(if (looking-at "> ")
(progn
(delete-region (point) (+ (point) 2))
(unless quoted
(insert "<blockquote>\n"))
(setq quoted t))
(when quoted
(insert "</blockquote>\n")
(setq quoted nil)))
(forward-line 1))
(goto-char (point-min))
(while (re-search-forward "^ *\n" nil t)
(replace-match "<p>\n"))
(widen)
(when (message-goto-signature)
(forward-line -1)
(insert "<p>\n")
(while (not (eobp))
(end-of-line)
(insert "<br>")
(forward-line 1)))
(message-goto-body)
(setq body (buffer-substring (point) (point-max)))
(erase-buffer)
(nnweb-fetch-form
"http://slashdot.org/comments.pl"
`(("sid" . ,sid)
("pid" . ,pid)
("rlogin" . "userlogin")
("unickname" . ,nnslashdot-login-name)
("upasswd" . ,nnslashdot-password)
("postersubj" . ,subject)
("op" . "Submit")
("postercomment" . ,body)
("posttype" . "html")))))
(deffoo nnslashdot-request-delete-group (group &optional force server)
(nnslashdot-possibly-change-server group server)
(setq nnslashdot-groups (delq (assoc group nnslashdot-groups)
nnslashdot-groups))
(nnslashdot-write-groups))
(deffoo nnslashdot-request-close ()
(setq nnslashdot-headers nil
nnslashdot-groups nil))
(deffoo nnslashdot-request-expire-articles
(articles group &optional server force)
(nnslashdot-possibly-change-server group server)
(let ((item (assoc group nnslashdot-groups)))
(when item
(if (fourth item)
(when (and (>= (length articles) (cadr item)) ;; All are expirable.
(nnmail-expired-article-p
group
(fourth item)
force))
(setq nnslashdot-groups (delq item nnslashdot-groups))
(nnslashdot-write-groups)
(setq articles nil)) ;; all expired.
(setcdr (cddr item) (list (current-time)))
(nnslashdot-write-groups))))
articles)
(nnoo-define-skeleton nnslashdot)
;;; Internal functions
(defun nnslashdot-possibly-change-server (&optional group server)
(nnslashdot-init server)
(when (and server
(not (nnslashdot-server-opened server)))
(nnslashdot-open-server server))
(unless nnslashdot-groups
(nnslashdot-read-groups)))
(defun nnslashdot-make-tuple (tuple n)
(prog1
tuple
(while (> n 1)
(unless (cdr tuple)
(setcdr tuple (list nil)))
(setq tuple (cdr tuple)
n (1- n)))))
(defun nnslashdot-read-groups ()
(let ((file (expand-file-name "groups" nnslashdot-directory)))
(when (file-exists-p file)
(mm-with-unibyte-buffer
(insert-file-contents file)
(goto-char (point-min))
(setq nnslashdot-groups (read (current-buffer))))
(if (and nnslashdot-groups (< (length (car nnslashdot-groups)) 5))
(let ((groups nnslashdot-groups))
(while groups
(nnslashdot-make-tuple (car groups) 5)
(setq groups (cdr groups))))))))
(defun nnslashdot-write-groups ()
(with-temp-file (expand-file-name "groups" nnslashdot-directory)
(gnus-prin1 nnslashdot-groups)))
(defun nnslashdot-init (server)
"Initialize buffers and such."
(unless (file-exists-p nnslashdot-directory)
(gnus-make-directory nnslashdot-directory))
(unless (gnus-buffer-live-p nnslashdot-buffer)
(setq nnslashdot-buffer
(save-excursion
(nnheader-set-temp-buffer
(format " *nnslashdot %s*" server))))
(push nnslashdot-buffer gnus-buffers)))
(defun nnslashdot-date-to-date (sdate)
(condition-case err
(let ((elem (delete "" (split-string sdate))))
(concat (substring (nth 0 elem) 0 3) " "
(substring (nth 1 elem) 0 3) " "
(substring (nth 2 elem) 0 2) " "
(substring (nth 3 elem) 1 6) " "
(format-time-string "%Y") " "
(nth 4 elem)))
(error "")))
(defun nnslashdot-generate-active ()
(save-excursion
(set-buffer nntp-server-buffer)
(erase-buffer)
(dolist (elem nnslashdot-groups)
(insert (prin1-to-string (car elem))
" " (number-to-string (cadr elem)) " 1 y\n"))))
(defun nnslashdot-lose (why)
(error "Slashdot HTML has changed; please get a new version of nnslashdot"))
(defalias 'nnslashdot-sid-strip 'identity)
(provide 'nnslashdot)
;;; nnslashdot.el ends here
|
