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991 lines
35 KiB
EmacsLisp
991 lines
35 KiB
EmacsLisp
;;; rnews.el --- USENET news reader for gnu emacs
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;; Copyright (C) 1985, 1986, 1987 Free Software Foundation, Inc.
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;; Maintainer: FSF
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;; Keywords: news
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;; This file is part of GNU Emacs.
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;; GNU Emacs is free software; you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation; either version 2, or (at your option)
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;; any later version.
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;; GNU Emacs is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs; see the file COPYING. If not, write to
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;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
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;;; Change Log:
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;; Created Sun Mar 10,1985 at 21:35:01 ads and sundar@hernes.ai.mit.edu
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;; Should do the point pdl stuff sometime
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;; finito except pdl.... Sat Mar 16,1985 at 06:43:44
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;; lets keep the summary stuff out until we get it working ..
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;; sundar@hermes.ai.mit.edu Wed Apr 10,1985 at 16:32:06
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;; hack slash maim. mly@prep.ai.mit.edu Thu 18 Apr, 1985 06:11:14
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;; modified to correct reentrance bug, to not bother with groups that
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;; received no new traffic since last read completely, to find out
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;; what traffic a group has available much more quickly when
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;; possible, to do some completing reads for group names - should
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;; be much faster...
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;; KING@KESTREL.arpa, Thu Mar 13 09:03:28 1986
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;; made news-{next,previous}-group skip groups with no new messages; and
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;; added checking for unsubscribed groups to news-add-news-group
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;; tower@prep.ai.mit.edu Jul 18 1986
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;; bound rmail-output to C-o; and changed header-field commands binding to
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;; agree with the new C-c C-f usage in sendmail
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;; tower@prep Sep 3 1986
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;; added news-rotate-buffer-body
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;; tower@prep Oct 17 1986
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;; made messages more user friendly, cleanuped news-inews
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;; move posting and mail code to new file rnewpost.el
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;; tower@prep Oct 29 1986
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;; added caesar-region, rename news-caesar-buffer-body, hacked accordingly
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;; tower@prep Nov 21 1986
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;; added tower@prep 22 Apr 87
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;;; Code:
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(require 'mail-utils)
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(autoload 'rmail-output "rmailout"
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"Append this message to Unix mail file named FILE-NAME."
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t)
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(autoload 'news-reply "rnewspost"
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"Compose and post a reply to the current article on USENET.
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While composing the reply, use \\[mail-yank-original] to yank the original
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message into it."
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t)
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(autoload 'news-mail-other-window "rnewspost"
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"Send mail in another window.
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While composing the message, use \\[mail-yank-original] to yank the
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original message into it."
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t)
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(autoload 'news-post-news "rnewspost"
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"Begin editing a new USENET news article to be posted."
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t)
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(autoload 'news-mail-reply "rnewspost"
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"Mail a reply to the author of the current article.
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While composing the reply, use \\[mail-yank-original] to yank the original
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message into it."
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t)
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(defvar news-group-hook-alist nil
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"Alist of (GROUP-REGEXP . HOOK) pairs.
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Just before displaying a message, each HOOK is called
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if its GROUP-REGEXP matches the current newsgroup name.")
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(defvar rmail-last-file (expand-file-name "~/mbox.news"))
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;Now in paths.el.
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;(defvar news-path "/usr/spool/news/"
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; "The root directory below which all news files are stored.")
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(defvar news-startup-file "$HOME/.newsrc" "Contains ~/.newsrc")
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(defvar news-certification-file "$HOME/.news-dates" "Contains ~/.news-dates")
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;; random headers that we decide to ignore.
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(defvar news-ignored-headers
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"^Path:\\|^Posting-Version:\\|^Article-I.D.:\\|^Expires:\\|^Date-Received:\\|^References:\\|^Control:\\|^Xref:\\|^Lines:\\|^Posted:\\|^Relay-Version:\\|^Message-ID:\\|^Nf-ID:\\|^Nf-From:\\|^Approved:\\|^Sender:"
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"All random fields within the header of a message.")
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(defvar news-mode-map nil)
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(defvar news-read-first-time-p t)
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;; Contains the (dotified) news groups of which you are a member.
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(defvar news-user-group-list nil)
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(defvar news-current-news-group nil)
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(defvar news-current-group-begin nil)
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(defvar news-current-group-end nil)
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(defvar news-current-certifications nil
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"An assoc list of a group name and the time at which it is
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known that the group had no new traffic")
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(defvar news-current-certifiable nil
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"The time when the directory we are now working on was written")
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(defvar news-message-filter nil
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"User specifiable filter function that will be called during
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formatting of the news file")
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;(defvar news-mode-group-string "Starting-Up"
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; "Mode line group name info is held in this variable")
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(defvar news-list-of-files nil
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"Global variable in which we store the list of files
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associated with the current newsgroup")
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(defvar news-list-of-files-possibly-bogus nil
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"variable indicating we only are guessing at which files are available.
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Not currently used.")
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;; association list in which we store lists of the form
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;; (pointified-group-name (first last old-last))
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(defvar news-group-article-assoc nil)
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(defvar news-current-message-number 0 "Displayed Article Number")
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(defvar news-total-current-group 0 "Total no of messages in group")
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(defvar news-unsubscribe-groups ())
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(defvar news-point-pdl () "List of visited news messages.")
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(defvar news-no-jumps-p t)
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(defvar news-buffer () "Buffer into which news files are read.")
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(defmacro news-push (item ref)
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(list 'setq ref (list 'cons item ref)))
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(defmacro news-cadr (x) (list 'car (list 'cdr x)))
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(defmacro news-cdar (x) (list 'cdr (list 'car x)))
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(defmacro news-caddr (x) (list 'car (list 'cdr (list 'cdr x))))
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(defmacro news-cadar (x) (list 'car (list 'cdr (list 'car x))))
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(defmacro news-caadr (x) (list 'car (list 'car (list 'cdr x))))
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(defmacro news-cdadr (x) (list 'cdr (list 'car (list 'cdr x))))
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(defmacro news-wins (pfx index)
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(` (file-exists-p (concat (, pfx) "/" (int-to-string (, index))))))
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(defvar news-max-plausible-gap 2
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"* In an rnews directory, the maximum possible gap size.
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A gap is a sequence of missing messages between two messages that exist.
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An empty file does not contribute to a gap -- it ends one.")
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(defun news-find-first-and-last (prefix base)
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(and (news-wins prefix base)
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(cons (news-find-first-or-last prefix base -1)
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(news-find-first-or-last prefix base 1))))
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(defmacro news-/ (a1 a2)
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;; a form of / that guarantees that (/ -1 2) = 0
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(if (zerop (/ -1 2))
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(` (/ (, a1) (, a2)))
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(` (if (< (, a1) 0)
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(- (/ (- (, a1)) (, a2)))
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(/ (, a1) (, a2))))))
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(defun news-find-first-or-last (pfx base dirn)
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;; first use powers of two to find a plausible ceiling
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(let ((original-dir dirn))
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(while (news-wins pfx (+ base dirn))
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(setq dirn (* dirn 2)))
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(setq dirn (news-/ dirn 2))
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;; Then use a binary search to find the high water mark
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(let ((offset (news-/ dirn 2)))
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(while (/= offset 0)
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(if (news-wins pfx (+ base dirn offset))
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(setq dirn (+ dirn offset)))
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(setq offset (news-/ offset 2))))
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;; If this high-water mark is bogus, recurse.
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(let ((offset (* news-max-plausible-gap original-dir)))
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(while (and (/= offset 0) (not (news-wins pfx (+ base dirn offset))))
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(setq offset (- offset original-dir)))
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(if (= offset 0)
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(+ base dirn)
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(news-find-first-or-last pfx (+ base dirn offset) original-dir)))))
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(defun rnews ()
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"Read USENET news for groups for which you are a member and add or
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delete groups.
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You can reply to articles posted and send articles to any group.
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Type \\[describe-mode] once reading news to get a list of rnews commands."
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(interactive)
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(let ((last-buffer (buffer-name)))
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(make-local-variable 'rmail-last-file)
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(switch-to-buffer (setq news-buffer (get-buffer-create "*news*")))
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(news-mode)
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(setq news-buffer-save last-buffer)
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(setq buffer-read-only nil)
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(erase-buffer)
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(setq buffer-read-only t)
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(set-buffer-modified-p t)
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(sit-for 0)
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(message "Getting new USENET news...")
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(news-set-mode-line)
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(news-get-certifications)
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(news-get-new-news)))
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(defun news-group-certification (group)
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(cdr-safe (assoc group news-current-certifications)))
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(defun news-set-current-certifiable ()
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;; Record the date that corresponds to the directory you are about to check
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(let ((file (concat news-path
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(string-subst-char ?/ ?. news-current-news-group))))
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(setq news-current-certifiable
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(nth 5 (file-attributes
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(or (file-symlink-p file) file))))))
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(defun news-get-certifications ()
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;; Read the certified-read file from last session
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(save-excursion
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(save-window-excursion
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(setq news-current-certifications
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(car-safe
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(condition-case var
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(let*
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((file (substitute-in-file-name news-certification-file))
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(buf (find-file-noselect file)))
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(and (file-exists-p file)
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(progn
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(switch-to-buffer buf 'norecord)
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(unwind-protect
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(read-from-string (buffer-string))
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(kill-buffer buf)))))
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(error nil)))))))
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(defun news-write-certifications ()
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;; Write a certification file.
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;; This is an assoc list of group names with doubletons that represent
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;; mod times of the directory when group is read completely.
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(save-excursion
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(save-window-excursion
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(with-output-to-temp-buffer
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"*CeRtIfIcAtIoNs*"
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(print news-current-certifications))
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(let ((buf (get-buffer "*CeRtIfIcAtIoNs*")))
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(switch-to-buffer buf)
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(write-file (substitute-in-file-name news-certification-file))
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(kill-buffer buf)))))
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(defun news-set-current-group-certification ()
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(let ((cgc (assoc news-current-news-group news-current-certifications)))
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(if cgc (setcdr cgc news-current-certifiable)
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(news-push (cons news-current-news-group news-current-certifiable)
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news-current-certifications))))
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(defun news-set-minor-modes ()
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"Creates a minor mode list that has group name, total articles,
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and attribute for current article."
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(setq news-minor-modes (list (cons 'foo
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(concat news-current-message-number
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"/"
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news-total-current-group
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(news-get-attribute-string)))))
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;; Detect Emacs versions 18.16 and up, which display
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;; directly from news-minor-modes by using a list for mode-name.
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(or (boundp 'minor-mode-alist)
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(setq minor-modes news-minor-modes)))
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(defun news-set-message-counters ()
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"Scan through current news-groups filelist to figure out how many messages
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are there. Set counters for use with minor mode display."
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(if (null news-list-of-files)
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(setq news-current-message-number 0)))
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(if news-mode-map
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nil
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(setq news-mode-map (make-keymap))
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(suppress-keymap news-mode-map)
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(define-key news-mode-map "." 'beginning-of-buffer)
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(define-key news-mode-map " " 'scroll-up)
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(define-key news-mode-map "\177" 'scroll-down)
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(define-key news-mode-map "n" 'news-next-message)
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(define-key news-mode-map "c" 'news-make-link-to-message)
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(define-key news-mode-map "p" 'news-previous-message)
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(define-key news-mode-map "j" 'news-goto-message)
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(define-key news-mode-map "q" 'news-exit)
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(define-key news-mode-map "e" 'news-exit)
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(define-key news-mode-map "\ej" 'news-goto-news-group)
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(define-key news-mode-map "\en" 'news-next-group)
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(define-key news-mode-map "\ep" 'news-previous-group)
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(define-key news-mode-map "l" 'news-list-news-groups)
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(define-key news-mode-map "?" 'describe-mode)
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(define-key news-mode-map "g" 'news-get-new-news)
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(define-key news-mode-map "f" 'news-reply)
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(define-key news-mode-map "m" 'news-mail-other-window)
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(define-key news-mode-map "a" 'news-post-news)
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(define-key news-mode-map "r" 'news-mail-reply)
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(define-key news-mode-map "o" 'news-save-item-in-file)
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(define-key news-mode-map "\C-o" 'rmail-output)
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(define-key news-mode-map "t" 'news-show-all-headers)
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(define-key news-mode-map "x" 'news-force-update)
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(define-key news-mode-map "A" 'news-add-news-group)
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(define-key news-mode-map "u" 'news-unsubscribe-current-group)
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(define-key news-mode-map "U" 'news-unsubscribe-group)
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(define-key news-mode-map "\C-c\C-r" 'news-caesar-buffer-body))
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(defun news-mode ()
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"News Mode is used by M-x rnews for reading USENET Newsgroups articles.
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New readers can find additional help in newsgroup: news.announce.newusers .
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All normal editing commands are turned off.
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Instead, these commands are available:
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. move point to front of this news article (same as Meta-<).
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Space scroll to next screen of this news article.
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Delete scroll down previous page of this news article.
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n move to next news article, possibly next group.
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p move to previous news article, possibly previous group.
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j jump to news article specified by numeric position.
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M-j jump to news group.
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M-n goto next news group.
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M-p goto previous news group.
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l list all the news groups with current status.
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? print this help message.
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C-c C-r caesar rotate all letters by 13 places in the article's body (rot13).
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g get new USENET news.
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f post a reply article to USENET.
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a post an original news article.
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A add a newsgroup.
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o save the current article in the named file (append if file exists).
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C-o output this message to a Unix-format mail file (append it).
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c \"copy\" (actually link) current or prefix-arg msg to file.
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warning: target directory and message file must be on same device
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(UNIX magic)
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t show all the headers this news article originally had.
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q quit reading news after updating .newsrc file.
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e exit updating .newsrc file.
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m mail a news article. Same as C-x 4 m.
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x update last message seen to be the current message.
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r mail a reply to this news article. Like m but initializes some fields.
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u unsubscribe from current newsgroup.
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U unsubscribe from specified newsgroup."
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(interactive)
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(kill-all-local-variables)
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(make-local-variable 'news-read-first-time-p)
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(setq news-read-first-time-p t)
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(make-local-variable 'news-current-news-group)
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; (setq news-current-news-group "??")
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(make-local-variable 'news-current-group-begin)
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(setq news-current-group-begin 0)
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(make-local-variable 'news-current-message-number)
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(setq news-current-message-number 0)
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(make-local-variable 'news-total-current-group)
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(make-local-variable 'news-buffer-save)
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(make-local-variable 'version-control)
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(setq version-control 'never)
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(make-local-variable 'news-point-pdl)
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; This breaks it. I don't have time to figure out why. -- RMS
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; (make-local-variable 'news-group-article-assoc)
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(setq major-mode 'news-mode)
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(if (boundp 'minor-mode-alist)
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;; Emacs versions 18.16 and up.
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(setq mode-name '("NEWS" news-minor-modes))
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;; Earlier versions display minor-modes via a special mechanism.
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(setq mode-name "NEWS"))
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(news-set-mode-line)
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(set-syntax-table text-mode-syntax-table)
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(use-local-map news-mode-map)
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(setq local-abbrev-table text-mode-abbrev-table)
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(run-hooks 'news-mode-hook))
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(defun string-subst-char (new old string)
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(let (index)
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(setq old (regexp-quote (char-to-string old))
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string (substring string 0))
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(while (setq index (string-match old string))
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(aset string index new)))
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string)
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;; update read message number
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(defmacro news-update-message-read (ngroup nno)
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(list 'setcar
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(list 'news-cdadr
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(list 'assoc ngroup 'news-group-article-assoc))
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nno))
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(defun news-parse-range (number-string)
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"Parse string representing range of numbers of he form <a>-<b>
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to a list (a . b)"
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(let ((n (string-match "-" number-string)))
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(if n
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(cons (string-to-int (substring number-string 0 n))
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(string-to-int (substring number-string (1+ n))))
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(setq n (string-to-int number-string))
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(cons n n))))
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;(defun is-in (elt lis)
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; (catch 'foo
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; (while lis
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; (if (equal (car lis) elt)
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; (throw 'foo t)
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; (setq lis (cdr lis))))))
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(defun news-get-new-news ()
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"Get new USENET news, if there is any for the current user."
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(interactive)
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(if (not (null news-user-group-list))
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(news-update-newsrc-file))
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(setq news-group-article-assoc ())
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(setq news-user-group-list ())
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(message "Looking up %s file..." news-startup-file)
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(let ((file (substitute-in-file-name news-startup-file))
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(temp-user-groups ()))
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(save-excursion
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(let ((newsrcbuf (find-file-noselect file))
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start end endofline tem)
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(set-buffer newsrcbuf)
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(goto-char 0)
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(while (search-forward ": " nil t)
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(setq end (point))
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(beginning-of-line)
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(setq start (point))
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(end-of-line)
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(setq endofline (point))
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(setq tem (buffer-substring start (- end 2)))
|
|
(let ((range (news-parse-range
|
|
(buffer-substring end endofline))))
|
|
(if (assoc tem news-group-article-assoc)
|
|
(message "You are subscribed twice to %s; I ignore second"
|
|
tem)
|
|
(setq temp-user-groups (cons tem temp-user-groups)
|
|
news-group-article-assoc
|
|
(cons (list tem (list (car range)
|
|
(cdr range)
|
|
(cdr range)))
|
|
news-group-article-assoc)))))
|
|
(kill-buffer newsrcbuf)))
|
|
(setq temp-user-groups (nreverse temp-user-groups))
|
|
(message "Prefrobnicating...")
|
|
(switch-to-buffer news-buffer)
|
|
(setq news-user-group-list temp-user-groups)
|
|
(while (and temp-user-groups
|
|
(not (news-read-files-into-buffer
|
|
(car temp-user-groups) nil)))
|
|
(setq temp-user-groups (cdr temp-user-groups)))
|
|
(if (null temp-user-groups)
|
|
(message "No news is good news.")
|
|
(message ""))))
|
|
|
|
(defun news-list-news-groups ()
|
|
"Display all the news groups to which you belong."
|
|
(interactive)
|
|
(with-output-to-temp-buffer "*Newsgroups*"
|
|
(save-excursion
|
|
(set-buffer standard-output)
|
|
(insert
|
|
"News Group Msg No. News Group Msg No.\n")
|
|
(insert
|
|
"------------------------- -------------------------\n")
|
|
(let ((temp news-user-group-list)
|
|
(flag nil))
|
|
(while temp
|
|
(let ((item (assoc (car temp) news-group-article-assoc)))
|
|
(insert (car item))
|
|
(indent-to (if flag 52 20))
|
|
(insert (int-to-string (news-cadr (news-cadr item))))
|
|
(if flag
|
|
(insert "\n")
|
|
(indent-to 33))
|
|
(setq temp (cdr temp) flag (not flag))))))))
|
|
|
|
;; Mode line hack
|
|
(defun news-set-mode-line ()
|
|
"Set mode line string to something useful."
|
|
(setq mode-line-process
|
|
(concat " "
|
|
(if (integerp news-current-message-number)
|
|
(int-to-string news-current-message-number)
|
|
"??")
|
|
"/"
|
|
(if (integerp news-current-group-end)
|
|
(int-to-string news-current-group-end)
|
|
news-current-group-end)))
|
|
(setq mode-line-buffer-identification
|
|
(concat "NEWS: "
|
|
news-current-news-group
|
|
;; Enough spaces to pad group name to 17 positions.
|
|
(substring " "
|
|
0 (max 0 (- 17 (length news-current-news-group))))))
|
|
(set-buffer-modified-p t)
|
|
(sit-for 0))
|
|
|
|
(defun news-goto-news-group (gp)
|
|
"Takes a string and goes to that news group."
|
|
(interactive (list (completing-read "NewsGroup: "
|
|
news-group-article-assoc)))
|
|
(message "Jumping to news group %s..." gp)
|
|
(news-select-news-group gp)
|
|
(message "Jumping to news group %s... done." gp))
|
|
|
|
(defun news-select-news-group (gp)
|
|
(let ((grp (assoc gp news-group-article-assoc)))
|
|
(if (null grp)
|
|
(error "Group %s not subscribed to" gp)
|
|
(progn
|
|
(news-update-message-read news-current-news-group
|
|
(news-cdar news-point-pdl))
|
|
(news-read-files-into-buffer (car grp) nil)
|
|
(news-set-mode-line)))))
|
|
|
|
(defun news-goto-message (arg)
|
|
"Goes to the article ARG in current newsgroup."
|
|
(interactive "p")
|
|
(if (null current-prefix-arg)
|
|
(setq arg (read-no-blanks-input "Go to article: " "")))
|
|
(news-select-message arg))
|
|
|
|
(defun news-select-message (arg)
|
|
(if (stringp arg) (setq arg (string-to-int arg)))
|
|
(let ((file (concat news-path
|
|
(string-subst-char ?/ ?. news-current-news-group)
|
|
"/" arg)))
|
|
(if (file-exists-p file)
|
|
(let ((buffer-read-only ()))
|
|
(if (= arg
|
|
(or (news-cadr (memq (news-cdar news-point-pdl) news-list-of-files))
|
|
0))
|
|
(setcdr (car news-point-pdl) arg))
|
|
(setq news-current-message-number arg)
|
|
(news-read-in-file file)
|
|
(news-set-mode-line))
|
|
(error "Article %d nonexistent" arg))))
|
|
|
|
(defun news-force-update ()
|
|
"updates the position of last article read in the current news group"
|
|
(interactive)
|
|
(setcdr (car news-point-pdl) news-current-message-number)
|
|
(message "Updated to %d" news-current-message-number))
|
|
|
|
(defun news-next-message (arg)
|
|
"Move ARG messages forward within one newsgroup.
|
|
Negative ARG moves backward.
|
|
If ARG is 1 or -1, moves to next or previous newsgroup if at end."
|
|
(interactive "p")
|
|
(let ((no (+ arg news-current-message-number)))
|
|
(if (or (< no news-current-group-begin)
|
|
(> no news-current-group-end))
|
|
(cond ((= arg 1)
|
|
(news-set-current-group-certification)
|
|
(news-next-group))
|
|
((= arg -1)
|
|
(news-previous-group))
|
|
(t (error "Article out of range")))
|
|
(let ((plist (news-get-motion-lists
|
|
news-current-message-number
|
|
news-list-of-files)))
|
|
(if (< arg 0)
|
|
(news-select-message (nth (1- (- arg)) (car (cdr plist))))
|
|
(news-select-message (nth (1- arg) (car plist))))))))
|
|
|
|
(defun news-previous-message (arg)
|
|
"Move ARG messages backward in current newsgroup.
|
|
With no arg or arg of 1, move one message
|
|
and move to previous newsgroup if at beginning.
|
|
A negative ARG means move forward."
|
|
(interactive "p")
|
|
(news-next-message (- arg)))
|
|
|
|
(defun news-move-to-group (arg)
|
|
"Given arg move forward or backward to a new newsgroup."
|
|
(let ((cg news-current-news-group))
|
|
(let ((plist (news-get-motion-lists cg news-user-group-list))
|
|
ngrp)
|
|
(if (< arg 0)
|
|
(or (setq ngrp (nth (1- (- arg)) (news-cadr plist)))
|
|
(error "No previous news groups"))
|
|
(or (setq ngrp (nth arg (car plist)))
|
|
(error "No more news groups")))
|
|
(news-select-news-group ngrp))))
|
|
|
|
(defun news-next-group ()
|
|
"Moves to the next user group."
|
|
(interactive)
|
|
; (message "Moving to next group...")
|
|
(news-move-to-group 0)
|
|
(while (null news-list-of-files)
|
|
(news-move-to-group 0)))
|
|
; (message "Moving to next group... done.")
|
|
|
|
(defun news-previous-group ()
|
|
"Moves to the previous user group."
|
|
(interactive)
|
|
; (message "Moving to previous group...")
|
|
(news-move-to-group -1)
|
|
(while (null news-list-of-files)
|
|
(news-move-to-group -1)))
|
|
; (message "Moving to previous group... done.")
|
|
|
|
(defun news-get-motion-lists (arg listy)
|
|
"Given a msgnumber/group this will return a list of two lists;
|
|
one for moving forward and one for moving backward."
|
|
(let ((temp listy)
|
|
(result ()))
|
|
(catch 'out
|
|
(while temp
|
|
(if (equal (car temp) arg)
|
|
(throw 'out (cons (cdr temp) (list result)))
|
|
(setq result (nconc (list (car temp)) result))
|
|
(setq temp (cdr temp)))))))
|
|
|
|
;; miscellaneous io routines
|
|
(defun news-read-in-file (filename)
|
|
(erase-buffer)
|
|
(let ((start (point)))
|
|
(insert-file-contents filename)
|
|
(news-convert-format)
|
|
;; Run each hook that applies to the current newsgroup.
|
|
(let ((hooks news-group-hook-alist))
|
|
(while hooks
|
|
(goto-char start)
|
|
(if (string-match (car (car hooks)) news-group-name)
|
|
(funcall (cdr (car hooks))))
|
|
(setq hooks (cdr hooks))))
|
|
(goto-char start)
|
|
(forward-line 1)
|
|
(if (eobp)
|
|
(message "(Empty file?)")
|
|
(goto-char start))))
|
|
|
|
(defun news-convert-format ()
|
|
(save-excursion
|
|
(save-restriction
|
|
(let* ((start (point))
|
|
(end (condition-case ()
|
|
(progn (search-forward "\n\n") (point))
|
|
(error nil)))
|
|
has-from has-date)
|
|
(cond (end
|
|
(narrow-to-region start end)
|
|
(goto-char start)
|
|
(setq has-from (search-forward "\nFrom:" nil t))
|
|
(cond ((and (not has-from) has-date)
|
|
(goto-char start)
|
|
(search-forward "\nDate:")
|
|
(beginning-of-line)
|
|
(kill-line) (kill-line)))
|
|
(news-delete-headers start)
|
|
(goto-char start)))))))
|
|
|
|
(defun news-show-all-headers ()
|
|
"Redisplay current news item with all original headers"
|
|
(interactive)
|
|
(let (news-ignored-headers
|
|
(buffer-read-only ()))
|
|
(erase-buffer)
|
|
(news-set-mode-line)
|
|
(news-read-in-file
|
|
(concat news-path
|
|
(string-subst-char ?/ ?. news-current-news-group)
|
|
"/" (int-to-string news-current-message-number)))))
|
|
|
|
(defun news-delete-headers (pos)
|
|
(goto-char pos)
|
|
(and (stringp news-ignored-headers)
|
|
(while (re-search-forward news-ignored-headers nil t)
|
|
(beginning-of-line)
|
|
(delete-region (point)
|
|
(progn (re-search-forward "\n[^ \t]")
|
|
(forward-char -1)
|
|
(point))))))
|
|
|
|
(defun news-exit ()
|
|
"Quit news reading session and update the .newsrc file."
|
|
(interactive)
|
|
(if (y-or-n-p "Do you really wanna quit reading news ? ")
|
|
(progn (message "Updating %s..." news-startup-file)
|
|
(news-update-newsrc-file)
|
|
(news-write-certifications)
|
|
(message "Updating %s... done" news-startup-file)
|
|
(message "Now do some real work")
|
|
(and (fboundp 'bury-buffer) (bury-buffer (current-buffer)))
|
|
(switch-to-buffer news-buffer-save)
|
|
(setq news-user-group-list ()))
|
|
(message "")))
|
|
|
|
(defun news-update-newsrc-file ()
|
|
"Updates the .newsrc file in the users home dir."
|
|
(let ((newsrcbuf (find-file-noselect
|
|
(substitute-in-file-name news-startup-file)))
|
|
(tem news-user-group-list)
|
|
group)
|
|
(save-excursion
|
|
(if (not (null news-current-news-group))
|
|
(news-update-message-read news-current-news-group
|
|
(news-cdar news-point-pdl)))
|
|
(set-buffer newsrcbuf)
|
|
(while tem
|
|
(setq group (assoc (car tem) news-group-article-assoc))
|
|
(if (= (news-cadr (news-cadr group)) (news-caddr (news-cadr group)))
|
|
nil
|
|
(goto-char 0)
|
|
(if (search-forward (concat (car group) ": ") nil t)
|
|
(kill-line nil)
|
|
(insert (car group) ": \n") (backward-char 1))
|
|
(insert (int-to-string (car (news-cadr group))) "-"
|
|
(int-to-string (news-cadr (news-cadr group)))))
|
|
(setq tem (cdr tem)))
|
|
(while news-unsubscribe-groups
|
|
(setq group (assoc (car news-unsubscribe-groups)
|
|
news-group-article-assoc))
|
|
(goto-char 0)
|
|
(if (search-forward (concat (car group) ": ") nil t)
|
|
(progn
|
|
(backward-char 2)
|
|
(kill-line nil)
|
|
(insert "! " (int-to-string (car (news-cadr group)))
|
|
"-" (int-to-string (news-cadr (news-cadr group))))))
|
|
(setq news-unsubscribe-groups (cdr news-unsubscribe-groups)))
|
|
(save-buffer)
|
|
(kill-buffer (current-buffer)))))
|
|
|
|
|
|
(defun news-unsubscribe-group (group)
|
|
"Removes you from newgroup GROUP."
|
|
(interactive (list (completing-read "Unsubscribe from group: "
|
|
news-group-article-assoc)))
|
|
(news-unsubscribe-internal group))
|
|
|
|
(defun news-unsubscribe-current-group ()
|
|
"Removes you from the newsgroup you are now reading."
|
|
(interactive)
|
|
(if (y-or-n-p "Do you really want to unsubscribe from this group ? ")
|
|
(news-unsubscribe-internal news-current-news-group)))
|
|
|
|
(defun news-unsubscribe-internal (group)
|
|
(let ((tem (assoc group news-group-article-assoc)))
|
|
(if tem
|
|
(progn
|
|
(setq news-unsubscribe-groups (cons group news-unsubscribe-groups))
|
|
(news-update-message-read group (news-cdar news-point-pdl))
|
|
(if (equal group news-current-news-group)
|
|
(news-next-group))
|
|
(message ""))
|
|
(error "Not subscribed to group: %s" group))))
|
|
|
|
(defun news-save-item-in-file (file)
|
|
"Save the current article that is being read by appending to a file."
|
|
(interactive "FSave item in file: ")
|
|
(append-to-file (point-min) (point-max) file))
|
|
|
|
(defun news-get-pruned-list-of-files (gp-list end-file-no)
|
|
"Given a news group it finds all files in the news group.
|
|
The arg must be in slashified format.
|
|
Using ls was found to be too slow in a previous version."
|
|
(let
|
|
((answer
|
|
(and
|
|
(not (and end-file-no
|
|
(equal (news-set-current-certifiable)
|
|
(news-group-certification gp-list))
|
|
(setq news-list-of-files nil
|
|
news-list-of-files-possibly-bogus t)))
|
|
(let* ((file-directory (concat news-path
|
|
(string-subst-char ?/ ?. gp-list)))
|
|
tem
|
|
(last-winner
|
|
(and end-file-no
|
|
(news-wins file-directory end-file-no)
|
|
(news-find-first-or-last file-directory end-file-no 1))))
|
|
(setq news-list-of-files-possibly-bogus t news-list-of-files nil)
|
|
(if last-winner
|
|
(progn
|
|
(setq news-list-of-files-possibly-bogus t
|
|
news-current-group-end last-winner)
|
|
(while (> last-winner end-file-no)
|
|
(news-push last-winner news-list-of-files)
|
|
(setq last-winner (1- last-winner)))
|
|
news-list-of-files)
|
|
(if (or (not (file-directory-p file-directory))
|
|
(not (file-readable-p file-directory)))
|
|
nil
|
|
(setq news-list-of-files
|
|
(condition-case error
|
|
(directory-files file-directory)
|
|
(file-error
|
|
(if (string= (nth 2 error) "permission denied")
|
|
(message "Newsgroup %s is read-protected"
|
|
gp-list)
|
|
(signal 'file-error (cdr error)))
|
|
nil)))
|
|
(setq tem news-list-of-files)
|
|
(while tem
|
|
(if (or (not (string-match "^[0-9]*$" (car tem)))
|
|
;; dont get confused by directories that look like numbers
|
|
(file-directory-p
|
|
(concat file-directory "/" (car tem)))
|
|
(<= (string-to-int (car tem)) end-file-no))
|
|
(setq news-list-of-files
|
|
(delq (car tem) news-list-of-files)))
|
|
(setq tem (cdr tem)))
|
|
(if (null news-list-of-files)
|
|
(progn (setq news-current-group-end 0)
|
|
nil)
|
|
(setq news-list-of-files
|
|
(mapcar 'string-to-int news-list-of-files))
|
|
(setq news-list-of-files (sort news-list-of-files '<))
|
|
(setq news-current-group-end
|
|
(elt news-list-of-files
|
|
(1- (length news-list-of-files))))
|
|
news-list-of-files)))))))
|
|
(or answer (progn (news-set-current-group-certification) nil))))
|
|
|
|
(defun news-read-files-into-buffer (group reversep)
|
|
(let* ((files-start-end (news-cadr (assoc group news-group-article-assoc)))
|
|
(start-file-no (car files-start-end))
|
|
(end-file-no (news-cadr files-start-end))
|
|
(buffer-read-only nil))
|
|
(setq news-current-news-group group)
|
|
(setq news-current-message-number nil)
|
|
(setq news-current-group-end nil)
|
|
(news-set-mode-line)
|
|
(news-get-pruned-list-of-files group end-file-no)
|
|
(news-set-mode-line)
|
|
;; @@ should be a lot smarter than this if we have to move
|
|
;; @@ around correctly.
|
|
(setq news-point-pdl (list (cons (car files-start-end)
|
|
(news-cadr files-start-end))))
|
|
(if (null news-list-of-files)
|
|
(progn (erase-buffer)
|
|
(setq news-current-group-end end-file-no)
|
|
(setq news-current-group-begin end-file-no)
|
|
(setq news-current-message-number end-file-no)
|
|
(news-set-mode-line)
|
|
; (message "No new articles in " group " group.")
|
|
nil)
|
|
(setq news-current-group-begin (car news-list-of-files))
|
|
(if reversep
|
|
(setq news-current-message-number news-current-group-end)
|
|
(if (> (car news-list-of-files) end-file-no)
|
|
(setcdr (car news-point-pdl) (car news-list-of-files)))
|
|
(setq news-current-message-number news-current-group-begin))
|
|
(news-set-message-counters)
|
|
(news-set-mode-line)
|
|
(news-read-in-file (concat news-path
|
|
(string-subst-char ?/ ?. group)
|
|
"/"
|
|
(int-to-string
|
|
news-current-message-number)))
|
|
(news-set-message-counters)
|
|
(news-set-mode-line)
|
|
t)))
|
|
|
|
(defun news-add-news-group (gp)
|
|
"Resubscribe to or add a USENET news group named GROUP (a string)."
|
|
; @@ (completing-read ...)
|
|
; @@ could be based on news library file ../active (slightly facist)
|
|
; @@ or (expensive to compute) all directories under the news spool directory
|
|
(interactive "sAdd news group: ")
|
|
(let ((file-dir (concat news-path (string-subst-char ?/ ?. gp))))
|
|
(save-excursion
|
|
(if (null (assoc gp news-group-article-assoc))
|
|
(let ((newsrcbuf (find-file-noselect
|
|
(substitute-in-file-name news-startup-file))))
|
|
(if (file-directory-p file-dir)
|
|
(progn
|
|
(switch-to-buffer newsrcbuf)
|
|
(goto-char 0)
|
|
(if (search-forward (concat gp "! ") nil t)
|
|
(progn
|
|
(message "Re-subscribing to group %s." gp)
|
|
;;@@ news-unsubscribe-groups isn't being used
|
|
;;(setq news-unsubscribe-groups
|
|
;; (delq gp news-unsubscribe-groups))
|
|
(backward-char 2)
|
|
(delete-char 1)
|
|
(insert ":"))
|
|
(progn
|
|
(message
|
|
"Added %s to your list of newsgroups." gp)
|
|
(end-of-buffer)
|
|
(insert gp ": 1-1\n")))
|
|
(search-backward gp nil t)
|
|
(let (start end endofline tem)
|
|
(search-forward ": " nil t)
|
|
(setq end (point))
|
|
(beginning-of-line)
|
|
(setq start (point))
|
|
(end-of-line)
|
|
(setq endofline (point))
|
|
(setq tem (buffer-substring start (- end 2)))
|
|
(let ((range (news-parse-range
|
|
(buffer-substring end endofline))))
|
|
(setq news-group-article-assoc
|
|
(cons (list tem (list (car range)
|
|
(cdr range)
|
|
(cdr range)))
|
|
news-group-article-assoc))))
|
|
(save-buffer)
|
|
(kill-buffer (current-buffer)))
|
|
(message "Newsgroup %s doesn't exist." gp)))
|
|
(message "Already subscribed to group %s." gp)))))
|
|
|
|
(defun news-make-link-to-message (number newname)
|
|
"Forges a link to an rnews message numbered number (current if no arg)
|
|
Good for hanging on to a message that might or might not be
|
|
automatically deleted."
|
|
(interactive "P
|
|
FName to link to message: ")
|
|
(add-name-to-file
|
|
(concat news-path
|
|
(string-subst-char ?/ ?. news-current-news-group)
|
|
"/" (if number
|
|
(prefix-numeric-value number)
|
|
news-current-message-number))
|
|
newname))
|
|
|
|
;;; caesar-region written by phr@prep.ai.mit.edu Nov 86
|
|
;;; modified by tower@prep Nov 86
|
|
(defun caesar-region (&optional n)
|
|
"Caesar rotation of region by N, default 13, for decrypting netnews."
|
|
(interactive (if current-prefix-arg ; Was there a prefix arg?
|
|
(list (prefix-numeric-value current-prefix-arg))
|
|
(list nil)))
|
|
(cond ((not (numberp n)) (setq n 13))
|
|
(t (setq n (mod n 26)))) ;canonicalize N
|
|
(if (not (zerop n)) ; no action needed for a rot of 0
|
|
(progn
|
|
(if (or (not (boundp 'caesar-translate-table))
|
|
(/= (aref caesar-translate-table ?a) (+ ?a n)))
|
|
(let ((i 0) (lower "abcdefghijklmnopqrstuvwxyz") upper)
|
|
(message "Building caesar-translate-table...")
|
|
(setq caesar-translate-table (make-vector 256 0))
|
|
(while (< i 256)
|
|
(aset caesar-translate-table i i)
|
|
(setq i (1+ i)))
|
|
(setq lower (concat lower lower) upper (upcase lower) i 0)
|
|
(while (< i 26)
|
|
(aset caesar-translate-table (+ ?a i) (aref lower (+ i n)))
|
|
(aset caesar-translate-table (+ ?A i) (aref upper (+ i n)))
|
|
(setq i (1+ i)))
|
|
(message "Building caesar-translate-table... done")))
|
|
(let ((from (region-beginning))
|
|
(to (region-end))
|
|
(i 0) str len)
|
|
(setq str (buffer-substring from to))
|
|
(setq len (length str))
|
|
(while (< i len)
|
|
(aset str i (aref caesar-translate-table (aref str i)))
|
|
(setq i (1+ i)))
|
|
(goto-char from)
|
|
(kill-region from to)
|
|
(insert str)))))
|
|
|
|
;;; news-caesar-buffer-body written by paul@media-lab.mit.edu Wed Oct 1, 1986
|
|
;;; hacked further by tower@prep.ai.mit.edu
|
|
(defun news-caesar-buffer-body (&optional rotnum)
|
|
"Caesar rotates all letters in the current buffer by 13 places.
|
|
Used to encode/decode possibly offensive messages (commonly in net.jokes).
|
|
With prefix arg, specifies the number of places to rotate each letter forward.
|
|
Mail and USENET news headers are not rotated."
|
|
(interactive (if current-prefix-arg ; Was there a prefix arg?
|
|
(list (prefix-numeric-value current-prefix-arg))
|
|
(list nil)))
|
|
(save-excursion
|
|
(let ((buffer-status buffer-read-only))
|
|
(setq buffer-read-only nil)
|
|
;; setup the region
|
|
(set-mark (if (progn (goto-char (point-min))
|
|
(search-forward
|
|
(concat "\n"
|
|
(if (equal major-mode 'news-mode)
|
|
""
|
|
mail-header-separator)
|
|
"\n") nil t))
|
|
(point)
|
|
(point-min)))
|
|
(goto-char (point-max))
|
|
(caesar-region rotnum)
|
|
(setq buffer-read-only buffer-status))))
|
|
|
|
(provide 'rnews)
|
|
|
|
;;; rnews.el ends here
|