[Emacs-diffs] Changes to emacs/lisp/gnus/nnslashdot.el [gnus-5_10-branch]

[Andreas Schwab]

Index: emacs/lisp/gnus/nnslashdot.el
diff -c /dev/null emacs/lisp/gnus/nnslashdot.el:1.5.2.1
*** /dev/null   Thu Jul 22 16:47:16 2004
--- emacs/lisp/gnus/nnslashdot.el       Thu Jul 22 16:45:51 2004
***************
*** 0 ****
--- 1,518 ----
+ ;;; nnslashdot.el --- interfacing with Slashdot
+ ;; Copyright (C) 1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
+ 
+ ;; Author: Lars Magne Ingebrigtsen <address@hidden>
+ ;; 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:
+ 
+ ;;; Code:
+ 
+ (eval-when-compile (require 'cl))
+ 
+ (require 'nnoo)
+ (require 'message)
+ (require 'gnus-util)
+ (require 'gnus)
+ (require 'nnmail)
+ (require 'mm-util)
+ (require 'mm-url)
+ 
+ (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-use-front-page nil
+   "Use the front page in addition to the backslash page.")
+ 
+ (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)
+         (mm-url-insert (format nnslashdot-article-url sid) t)
+         (goto-char (point-min))
+         (if (eobp)
+             (error "Couldn't open connection to slashdot"))
+         (re-search-forward "Posted by[ \t\r\n]+")
+         (when (looking-at "\\(<a[^>]+>\\)?[ \t\r\n]*\\([^<\r\n]+\\)")
+           (setq from (mm-url-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 "<" sid "address@hidden>")
+            "" 0 lines nil nil))
+          headers)
+         (setq start (if nnslashdot-threaded 2 (pop articles))))
+       (while (and start (<= start last))
+         (setq point (goto-char (point-max)))
+         (mm-url-insert
+          (format nnslashdot-comments-url 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 (mm-url-decode-entities-string subject))
+           (search-forward "<BR>")
+           (cond 
+            ((looking-at
+              "by[ \t\n]+<a[^>]+>\\([^<]+\\)</a>[ 
\t\n]*(\\(<[^>]+>\\)*\\([^<>)]+\\))")
+             (goto-char (- (match-end 0) 5))
+             (setq from (concat
+                         (mm-url-decode-entities-string (match-string 1))
+                         " <" (match-string 3) ">")))
+            ((looking-at "by[ \t\n]+<a[^>]+>\\([^<(]+\\) (\\([0-9]+\\))</a>")
+             (goto-char (- (match-end 0) 5))
+             (setq from (concat 
+                         (mm-url-decode-entities-string (match-string 1))
+                         " <" (match-string 2) ">")))
+            ((looking-at "by \\([^<>]*\\)[\t\n\r ]+on ")
+             (goto-char (- (match-end 0) 5))
+             (setq from (mm-url-decode-entities-string (match-string 1))))
+            (t
+             (setq from "")))
+           (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 "<" sid "%" cid "@slashdot>")
+              (if parent
+                  (concat "<" 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
+                             "<IFRAME\\|<SCRIPT 
LANGUAGE=\"JAVASCRIPT\">\\|<!-- no ad 6 -->\\|&lt;&nbsp;[ \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)
+       (first nnslashdot-use-front-page)
+       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
+           (mm-url-insert nnslashdot-backslash-url t)
+           (goto-char (point-min))
+           (if (eobp)
+               (error "Couldn't open connection to slashdot"))
+           (while (search-forward "<story>" nil t)
+             (narrow-to-region (point) (search-forward "</story>"))
+             (goto-char (point-min))
+             (re-search-forward "<title>\\([^<]+\\)</title>")
+             (setq description
+                   (mm-url-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 (or first
+                    (> (- nnslashdot-group-number number) 0))
+           (setq first nil)
+           (mm-with-unibyte-buffer
+             (let ((case-fold-search t))
+               (mm-url-insert (format nnslashdot-active-url number) t)
+               (goto-char (point-min))
+               (while (re-search-forward
+                       "article.pl\\?sid=\\([^&]+\\).*>\\([^<]+\\)</a>"
+                       nil t)
+                 (setq sid (match-string 1)
+                       description
+                       (mm-url-decode-entities-string (match-string 2)))
+                 (forward-line 1)
+                 (when (re-search-forward "with \\([0-9]+\\) comment" nil t)
+                   (setq articles (1+ (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 (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)
+     (mm-url-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)
+       (when (numberp (cadr elem))
+       (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"))
+ 
+ (provide 'nnslashdot)
+ 
+ ;;; arch-tag: aa73df7a-f7e6-4eef-bdea-5ce2f8c691b3
+ ;;; nnslashdot.el ends here