+++ /dev/null
-;;; nnkiboze.el --- select virtual news access for Gnus
-
-;; Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000
-;; 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:
-
-;; The other access methods (nntp, nnspool, etc) are general news
-;; access methods. This module relies on Gnus and can't be used
-;; separately.
-
-;;; Code:
-
-(eval-when-compile (require 'cl))
-(eval-when-compile (require 'gnus-clfns))
-
-(require 'nntp)
-(require 'nnheader)
-(require 'gnus)
-(require 'gnus-score)
-(require 'nnoo)
-
-(nnoo-declare nnkiboze)
-(defvoo nnkiboze-directory (nnheader-concat gnus-directory "kiboze/")
- "nnkiboze will put its files in this directory.")
-
-(defvoo nnkiboze-level 9
- "The maximum level to be searched for articles.")
-
-(defvoo nnkiboze-remove-read-articles t
- "If non-nil, nnkiboze will remove read articles from the kiboze group.")
-
-(defvoo nnkiboze-ephemeral nil
- "If non-nil, don't store any data anywhere.")
-
-(defvoo nnkiboze-scores nil
- "Score rules for generating the nnkiboze group.")
-
-(defvoo nnkiboze-regexp nil
- "Regexp for matching component groups.")
-
-(defvoo nnkiboze-file-coding-system nnheader-text-coding-system
- "Coding system for nnkiboze files.")
-
-\f
-
-(defconst nnkiboze-version "nnkiboze 1.0")
-
-(defvoo nnkiboze-current-group nil)
-(defvoo nnkiboze-status-string "")
-
-(defvoo nnkiboze-headers nil)
-
-\f
-
-;;; Interface functions.
-
-(nnoo-define-basics nnkiboze)
-
-(deffoo nnkiboze-retrieve-headers (articles &optional group server fetch-old)
- (nnkiboze-possibly-change-group group)
- (unless gnus-nov-is-evil
- (if (stringp (car articles))
- 'headers
- (let ((nov (nnkiboze-nov-file-name)))
- (when (file-exists-p nov)
- (save-excursion
- (set-buffer nntp-server-buffer)
- (erase-buffer)
- (let ((nnheader-file-coding-system nnkiboze-file-coding-system))
- (nnheader-insert-file-contents nov))
- (nnheader-nov-delete-outside-range
- (car articles) (car (last articles)))
- 'nov))))))
-
-(deffoo nnkiboze-request-article (article &optional newsgroup server buffer)
- (nnkiboze-possibly-change-group newsgroup)
- (if (not (numberp article))
- ;; This is a real kludge. It might not work at times, but it
- ;; does no harm I think. The only alternative is to offer no
- ;; article fetching by message-id at all.
- (nntp-request-article article newsgroup gnus-nntp-server buffer)
- (let* ((header (gnus-summary-article-header article))
- (xref (mail-header-xref header))
- num group)
- (unless xref
- (error "nnkiboze: No xref"))
- (unless (string-match " \\([^ ]+\\):\\([0-9]+\\)" xref)
- (error "nnkiboze: Malformed xref"))
- (setq num (string-to-int (match-string 2 xref))
- group (match-string 1 xref))
- (or (with-current-buffer buffer
- (gnus-cache-request-article num group))
- (gnus-request-article num group buffer)))))
-
-(deffoo nnkiboze-request-scan (&optional group server)
- (nnkiboze-generate-group (concat "nnkiboze:" group)))
-
-(deffoo nnkiboze-request-group (group &optional server dont-check)
- "Make GROUP the current newsgroup."
- (nnkiboze-possibly-change-group group)
- (if dont-check
- t
- (let ((nov-file (nnkiboze-nov-file-name))
- beg end total)
- (save-excursion
- (set-buffer nntp-server-buffer)
- (erase-buffer)
- (unless (file-exists-p nov-file)
- (nnkiboze-request-scan group))
- (if (not (file-exists-p nov-file))
- (nnheader-report 'nnkiboze "Can't select group %s" group)
- (let ((nnheader-file-coding-system nnkiboze-file-coding-system))
- (nnheader-insert-file-contents nov-file))
- (if (zerop (buffer-size))
- (nnheader-insert "211 0 0 0 %s\n" group)
- (goto-char (point-min))
- (when (looking-at "[0-9]+")
- (setq beg (read (current-buffer))))
- (goto-char (point-max))
- (when (re-search-backward "^[0-9]" nil t)
- (setq end (read (current-buffer))))
- (setq total (count-lines (point-min) (point-max)))
- (nnheader-insert "211 %d %d %d %s\n" total beg end group)))))))
-
-(deffoo nnkiboze-close-group (group &optional server)
- (nnkiboze-possibly-change-group group)
- ;; Remove NOV lines of articles that are marked as read.
- (when (and (file-exists-p (nnkiboze-nov-file-name))
- nnkiboze-remove-read-articles)
- (let ((coding-system-for-write nnkiboze-file-coding-system)
- (output-coding-system nnkiboze-file-coding-system))
- (with-temp-file (nnkiboze-nov-file-name)
- (let ((cur (current-buffer))
- (nnheader-file-coding-system nnkiboze-file-coding-system))
- (nnheader-insert-file-contents (nnkiboze-nov-file-name))
- (goto-char (point-min))
- (while (not (eobp))
- (if (not (gnus-article-read-p (read cur)))
- (forward-line 1)
- (gnus-delete-line))))))
- (setq nnkiboze-current-group nil)))
-
-(deffoo nnkiboze-open-server (server &optional defs)
- (unless (assq 'nnkiboze-regexp defs)
- (push `(nnkiboze-regexp ,server)
- defs))
- (nnoo-change-server 'nnkiboze server defs))
-
-(deffoo nnkiboze-request-delete-group (group &optional force server)
- (nnkiboze-possibly-change-group group)
- (when force
- (let ((files (nconc
- (nnkiboze-score-file group)
- (list (nnkiboze-nov-file-name)
- (nnkiboze-nov-file-name ".newsrc")))))
- (while files
- (and (file-exists-p (car files))
- (file-writable-p (car files))
- (delete-file (car files)))
- (setq files (cdr files)))))
- (setq nnkiboze-current-group nil)
- t)
-
-(nnoo-define-skeleton nnkiboze)
-
-\f
-;;; Internal functions.
-
-(defun nnkiboze-possibly-change-group (group)
- (setq nnkiboze-current-group group))
-
-(defun nnkiboze-prefixed-name (group)
- (gnus-group-prefixed-name group '(nnkiboze "")))
-
-;;;###autoload
-(defun nnkiboze-generate-groups ()
- "\"Usage: emacs -batch -l nnkiboze -f nnkiboze-generate-groups\".
-Finds out what articles are to be part of the nnkiboze groups."
- (interactive)
- (let ((nnmail-spool-file nil)
- (mail-sources nil)
- (gnus-use-dribble-file nil)
- (gnus-read-active-file t)
- (gnus-expert-user t))
- (gnus))
- (let* ((gnus-newsrc-alist (gnus-copy-sequence gnus-newsrc-alist))
- (newsrc (cdr gnus-newsrc-alist))
- gnus-newsrc-hashtb info)
- (gnus-make-hashtable-from-newsrc-alist)
- ;; We have copied all the newsrc alist info over to local copies
- ;; so that we can mess all we want with these lists.
- (while (setq info (pop newsrc))
- (when (string-match "nnkiboze" (gnus-info-group info))
- ;; For each kiboze group, we call this function to generate
- ;; it.
- (nnkiboze-generate-group (gnus-info-group info) t))))
- (save-excursion
- (set-buffer gnus-group-buffer)
- (gnus-group-list-groups)))
-
-(defun nnkiboze-score-file (group)
- (list (expand-file-name
- (concat (file-name-as-directory gnus-kill-files-directory)
- (nnheader-translate-file-chars
- (concat (nnkiboze-prefixed-name nnkiboze-current-group)
- "." gnus-score-file-suffix))))))
-
-(defun nnkiboze-generate-group (group &optional inhibit-list-groups)
- (let* ((info (nth 2 (gnus-gethash group gnus-newsrc-hashtb)))
- (newsrc-file (concat nnkiboze-directory
- (nnheader-translate-file-chars
- (concat group ".newsrc"))))
- (nov-file (concat nnkiboze-directory
- (nnheader-translate-file-chars
- (concat group ".nov"))))
- method nnkiboze-newsrc gname newsrc active
- ginfo lowest glevel orig-info nov-buffer
- ;; Bind various things to nil to make group entry faster.
- (gnus-expert-user t)
- (gnus-large-newsgroup nil)
- (gnus-score-find-score-files-function 'nnkiboze-score-file)
- ;; Use only nnkiboze-score-file!
- (gnus-score-use-all-scores nil)
- (gnus-use-scoring t)
- (gnus-verbose (min gnus-verbose 3))
- gnus-select-group-hook gnus-summary-prepare-hook
- gnus-thread-sort-functions gnus-show-threads
- gnus-visual gnus-suppress-duplicates num-unread)
- (unless info
- (error "No such group: %s" group))
- ;; Load the kiboze newsrc file for this group.
- (when (file-exists-p newsrc-file)
- (load newsrc-file))
- (let ((coding-system-for-write nnkiboze-file-coding-system)
- (output-coding-system nnkiboze-file-coding-system))
- (with-temp-file nov-file
- (when (file-exists-p nov-file)
- (nnheader-insert-file-contents nov-file))
- (setq nov-buffer (current-buffer))
- ;; Go through the active hashtb and add new all groups that match the
- ;; kiboze regexp.
- (mapatoms
- (lambda (group)
- (and (string-match nnkiboze-regexp
- (setq gname (symbol-name group))) ; Match
- (not (assoc gname nnkiboze-newsrc)) ; It isn't registered
- (numberp (car (symbol-value group))) ; It is active
- (or (> nnkiboze-level 7)
- (and (setq glevel (nth 1 (nth 2 (gnus-gethash
- gname gnus-newsrc-hashtb))))
- (>= nnkiboze-level glevel)))
- (not (string-match "^nnkiboze:" gname)) ; Exclude kibozes
- (push (cons gname (1- (car (symbol-value group))))
- nnkiboze-newsrc)))
- gnus-active-hashtb)
- ;; `newsrc' is set to the list of groups that possibly are
- ;; component groups to this kiboze group. This list has elements
- ;; on the form `(GROUP . NUMBER)', where NUMBER is the highest
- ;; number that has been kibozed in GROUP in this kiboze group.
- (setq newsrc nnkiboze-newsrc)
- (while newsrc
- (if (not (setq active (gnus-gethash
- (caar newsrc) gnus-active-hashtb)))
- ;; This group isn't active after all, so we remove it from
- ;; the list of component groups.
- (setq nnkiboze-newsrc (delq (car newsrc) nnkiboze-newsrc))
- (setq lowest (cdar newsrc))
- ;; Ok, we have a valid component group, so we jump to it.
- (switch-to-buffer gnus-group-buffer)
- (gnus-group-jump-to-group (caar newsrc))
- (gnus-message 3 "nnkiboze: Checking %s..." (caar newsrc))
- (setq ginfo (gnus-get-info (gnus-group-group-name))
- orig-info (gnus-copy-sequence ginfo)
- num-unread (car (gnus-gethash (caar newsrc)
- gnus-newsrc-hashtb)))
- (unwind-protect
- (progn
- ;; We set all list of article marks to nil. Since we operate
- ;; on copies of the real lists, we can destroy anything we
- ;; want here.
- (when (nth 3 ginfo)
- (setcar (nthcdr 3 ginfo) nil))
- ;; We set the list of read articles to be what we expect for
- ;; this kiboze group -- either nil or `(1 . LOWEST)'.
- (when ginfo
- (setcar (nthcdr 2 ginfo)
- (and (not (= lowest 1)) (cons 1 lowest))))
- (when (and (or (not ginfo)
- (> (length (gnus-list-of-unread-articles
- (car ginfo)))
- 0))
- (progn
- (ignore-errors
- (gnus-group-select-group nil))
- (eq major-mode 'gnus-summary-mode)))
- ;; We are now in the group where we want to be.
- (setq method (gnus-find-method-for-group
- gnus-newsgroup-name))
- (when (eq method gnus-select-method)
- (setq method nil))
- ;; We go through the list of scored articles.
- (while gnus-newsgroup-scored
- (when (> (caar gnus-newsgroup-scored) lowest)
- ;; If it has a good score, then we enter this article
- ;; into the kiboze group.
- (nnkiboze-enter-nov
- nov-buffer
- (gnus-summary-article-header
- (caar gnus-newsgroup-scored))
- gnus-newsgroup-name))
- (setq gnus-newsgroup-scored (cdr gnus-newsgroup-scored)))
- ;; That's it. We exit this group.
- (when (eq major-mode 'gnus-summary-mode)
- (kill-buffer (current-buffer)))))
- ;; Restore the proper info.
- (when ginfo
- (setcdr ginfo (cdr orig-info)))
- (setcar (gnus-gethash (caar newsrc) gnus-newsrc-hashtb)
- num-unread)))
- (setcdr (car newsrc) (car active))
- (gnus-message 3 "nnkiboze: Checking %s...done" (caar newsrc))
- (setq newsrc (cdr newsrc)))))
- ;; We save the kiboze newsrc for this group.
- (with-temp-file newsrc-file
- (insert "(setq nnkiboze-newsrc '")
- (gnus-prin1 nnkiboze-newsrc)
- (insert ")\n")))
- (unless inhibit-list-groups
- (save-excursion
- (set-buffer gnus-group-buffer)
- (gnus-group-list-groups)))
- t)
-
-(defun nnkiboze-enter-nov (buffer header group)
- (save-excursion
- (set-buffer buffer)
- (goto-char (point-max))
- (let ((prefix (gnus-group-real-prefix group))
- (oheader (copy-sequence header))
- article)
- (if (zerop (forward-line -1))
- (progn
- (setq article (1+ (read (current-buffer))))
- (forward-line 1))
- (setq article 1))
- (mail-header-set-number oheader article)
- (with-temp-buffer
- (insert (or (mail-header-xref oheader) ""))
- (goto-char (point-min))
- (if (re-search-forward " [^ ]+:[0-9]+" nil t)
- (goto-char (match-beginning 0))
- (or (eobp) (forward-char 1)))
- ;; The first Xref has to be the group this article
- ;; really came for - this is the article nnkiboze
- ;; will request when it is asked for the article.
- (insert " " group ":"
- (int-to-string (mail-header-number header)) " ")
- (while (re-search-forward " [^ ]+:[0-9]+" nil t)
- (goto-char (1+ (match-beginning 0)))
- (insert prefix))
- (mail-header-set-xref oheader (buffer-string)))
- (nnheader-insert-nov oheader))))
-
-(defun nnkiboze-nov-file-name (&optional suffix)
- (concat (file-name-as-directory nnkiboze-directory)
- (nnheader-translate-file-chars
- (concat (nnkiboze-prefixed-name nnkiboze-current-group)
- (or suffix ".nov")))))
-
-(provide 'nnkiboze)
-
-;;; nnkiboze.el ends here
projects / elisp / gnus.git- / blobdiff