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- ;;; nnbabyl.el --- rmail mbox access for Gnus
- ;; Copyright (C) 1995,96 Free Software Foundation, Inc.
-
- ;; Author: Lars Magne Ingebrigtsen <larsi@ifi.uio.no>
- ;; Masanobu UMEDA <umerin@flab.flab.fujitsu.junet>
- ;; Keywords: news, mail
-
- ;; 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:
-
- ;; For an overview of what the interface functions do, please see the
- ;; Gnus sources.
-
- ;;; Code:
-
- (require 'nnheader)
- (require 'rmail)
- (require 'nnmail)
- (require 'nnoo)
- (eval-when-compile (require 'cl))
-
- (nnoo-declare nnbabyl)
-
- (defvoo nnbabyl-mbox-file (expand-file-name "~/RMAIL")
- "The name of the rmail box file in the users home directory.")
-
- (defvoo nnbabyl-active-file (expand-file-name "~/.rmail-active")
- "The name of the active file for the rmail box.")
-
- (defvoo nnbabyl-get-new-mail t
- "If non-nil, nnbabyl will check the incoming mail file and split the mail.")
-
- (defvoo nnbabyl-prepare-save-mail-hook nil
- "Hook run narrowed to an article before saving.")
-
-
-
- (defvar nnbabyl-mail-delimiter "\^_")
-
- (defconst nnbabyl-version "nnbabyl 1.0"
- "nnbabyl version.")
-
- (defvoo nnbabyl-mbox-buffer nil)
- (defvoo nnbabyl-current-group nil)
- (defvoo nnbabyl-status-string "")
- (defvoo nnbabyl-group-alist nil)
- (defvoo nnbabyl-active-timestamp nil)
-
- (defvoo nnbabyl-previous-buffer-mode nil)
-
- (eval-and-compile
- (autoload 'gnus-set-text-properties "gnus-ems"))
-
-
-
- ;;; Interface functions
-
- (nnoo-define-basics nnbabyl)
-
- (deffoo nnbabyl-retrieve-headers (articles &optional group server fetch-old)
- (save-excursion
- (set-buffer nntp-server-buffer)
- (erase-buffer)
- (let ((number (length articles))
- (count 0)
- (delim (concat "^" nnbabyl-mail-delimiter))
- article art-string start stop)
- (nnbabyl-possibly-change-newsgroup group server)
- (while (setq article (pop articles))
- (setq art-string (nnbabyl-article-string article))
- (set-buffer nnbabyl-mbox-buffer)
- (beginning-of-line)
- (when (or (search-forward art-string nil t)
- (search-backward art-string nil t))
- (re-search-backward delim nil t)
- (while (and (not (looking-at ".+:"))
- (zerop (forward-line 1))))
- (setq start (point))
- (search-forward "\n\n" nil t)
- (setq stop (1- (point)))
- (set-buffer nntp-server-buffer)
- (insert "221 ")
- (princ article (current-buffer))
- (insert " Article retrieved.\n")
- (insert-buffer-substring nnbabyl-mbox-buffer start stop)
- (goto-char (point-max))
- (insert ".\n"))
- (and (numberp nnmail-large-newsgroup)
- (> number nnmail-large-newsgroup)
- (zerop (% (incf count) 20))
- (nnheader-message 5 "nnbabyl: Receiving headers... %d%%"
- (/ (* count 100) number))))
-
- (and (numberp nnmail-large-newsgroup)
- (> number nnmail-large-newsgroup)
- (nnheader-message 5 "nnbabyl: Receiving headers...done"))
-
- (set-buffer nntp-server-buffer)
- (nnheader-fold-continuation-lines)
- 'headers)))
-
- (deffoo nnbabyl-open-server (server &optional defs)
- (nnoo-change-server 'nnbabyl server defs)
- (cond
- ((not (file-exists-p nnbabyl-mbox-file))
- (nnbabyl-close-server)
- (nnheader-report 'nnbabyl "No such file: %s" nnbabyl-mbox-file))
- ((file-directory-p nnbabyl-mbox-file)
- (nnbabyl-close-server)
- (nnheader-report 'nnbabyl "Not a regular file: %s" nnbabyl-mbox-file))
- (t
- (nnheader-report 'nnbabyl "Opened server %s using mbox %s" server
- nnbabyl-mbox-file)
- t)))
-
- (deffoo nnbabyl-close-server (&optional server)
- ;; Restore buffer mode.
- (when (and (nnbabyl-server-opened)
- nnbabyl-previous-buffer-mode)
- (save-excursion
- (set-buffer nnbabyl-mbox-buffer)
- (narrow-to-region
- (caar nnbabyl-previous-buffer-mode)
- (cdar nnbabyl-previous-buffer-mode))
- (funcall (cdr nnbabyl-previous-buffer-mode))))
- (nnoo-close-server 'nnbabyl server)
- (setq nnbabyl-mbox-buffer nil)
- t)
-
- (deffoo nnbabyl-server-opened (&optional server)
- (and (nnoo-current-server-p 'nnbabyl server)
- nnbabyl-mbox-buffer
- (buffer-name nnbabyl-mbox-buffer)
- nntp-server-buffer
- (buffer-name nntp-server-buffer)))
-
- (deffoo nnbabyl-request-article (article &optional newsgroup server buffer)
- (nnbabyl-possibly-change-newsgroup newsgroup server)
- (save-excursion
- (set-buffer nnbabyl-mbox-buffer)
- (goto-char (point-min))
- (when (search-forward (nnbabyl-article-string article) nil t)
- (let (start stop summary-line)
- (re-search-backward (concat "^" nnbabyl-mail-delimiter) nil t)
- (while (and (not (looking-at ".+:"))
- (zerop (forward-line 1))))
- (setq start (point))
- (or (and (re-search-forward
- (concat "^" nnbabyl-mail-delimiter) nil t)
- (forward-line -1))
- (goto-char (point-max)))
- (setq stop (point))
- (let ((nntp-server-buffer (or buffer nntp-server-buffer)))
- (set-buffer nntp-server-buffer)
- (erase-buffer)
- (insert-buffer-substring nnbabyl-mbox-buffer start stop)
- (goto-char (point-min))
- ;; If there is an EOOH header, then we have to remove some
- ;; duplicated headers.
- (setq summary-line (looking-at "Summary-line:"))
- (when (search-forward "\n*** EOOH ***" nil t)
- (if summary-line
- ;; The headers to be deleted are located before the
- ;; EOOH line...
- (delete-region (point-min) (progn (forward-line 1)
- (point)))
- ;; ...or after.
- (delete-region (progn (beginning-of-line) (point))
- (or (search-forward "\n\n" nil t)
- (point)))))
- (if (numberp article)
- (cons nnbabyl-current-group article)
- (nnbabyl-article-group-number)))))))
-
- (deffoo nnbabyl-request-group (group &optional server dont-check)
- (let ((active (cadr (assoc group nnbabyl-group-alist))))
- (save-excursion
- (cond
- ((or (null active)
- (null (nnbabyl-possibly-change-newsgroup group server)))
- (nnheader-report 'nnbabyl "No such group: %s" group))
- (dont-check
- (nnheader-report 'nnbabyl "Selected group %s" group)
- (nnheader-insert ""))
- (t
- (nnheader-report 'nnbabyl "Selected group %s" group)
- (nnheader-insert "211 %d %d %d %s\n"
- (1+ (- (cdr active) (car active)))
- (car active) (cdr active) group))))))
-
- (deffoo nnbabyl-request-scan (&optional group server)
- (nnbabyl-read-mbox)
- (nnmail-get-new-mail
- 'nnbabyl
- (lambda ()
- (save-excursion
- (set-buffer nnbabyl-mbox-buffer)
- (save-buffer)))
- nnbabyl-mbox-file group
- (lambda ()
- (save-excursion
- (let ((in-buf (current-buffer)))
- (goto-char (point-min))
- (while (search-forward "\n\^_\n" nil t)
- (delete-char -1))
- (set-buffer nnbabyl-mbox-buffer)
- (goto-char (point-max))
- (search-backward "\n\^_" nil t)
- (goto-char (match-end 0))
- (insert-buffer-substring in-buf)))
- (nnmail-save-active nnbabyl-group-alist nnbabyl-active-file))))
-
- (deffoo nnbabyl-close-group (group &optional server)
- t)
-
- (deffoo nnbabyl-request-create-group (group &optional server)
- (nnmail-activate 'nnbabyl)
- (unless (assoc group nnbabyl-group-alist)
- (setq nnbabyl-group-alist (cons (list group (cons 1 0))
- nnbabyl-group-alist))
- (nnmail-save-active nnbabyl-group-alist nnbabyl-active-file))
- t)
-
- (deffoo nnbabyl-request-list (&optional server)
- (save-excursion
- (nnmail-find-file nnbabyl-active-file)
- (setq nnbabyl-group-alist (nnmail-get-active))))
-
- (deffoo nnbabyl-request-newgroups (date &optional server)
- (nnbabyl-request-list server))
-
- (deffoo nnbabyl-request-list-newsgroups (&optional server)
- (nnheader-report 'nnbabyl "nnbabyl: LIST NEWSGROUPS is not implemented."))
-
- (deffoo nnbabyl-request-expire-articles
- (articles newsgroup &optional server force)
- (nnbabyl-possibly-change-newsgroup newsgroup server)
- (let* ((is-old t)
- rest)
- (nnmail-activate 'nnbabyl)
-
- (save-excursion
- (set-buffer nnbabyl-mbox-buffer)
- (gnus-set-text-properties (point-min) (point-max) nil)
- (while (and articles is-old)
- (goto-char (point-min))
- (if (search-forward (nnbabyl-article-string (car articles)) nil t)
- (if (setq is-old
- (nnmail-expired-article-p
- newsgroup
- (buffer-substring
- (point) (progn (end-of-line) (point))) force))
- (progn
- (nnheader-message 5 "Deleting article %d in %s..."
- (car articles) newsgroup)
- (nnbabyl-delete-mail))
- (setq rest (cons (car articles) rest))))
- (setq articles (cdr articles)))
- (save-buffer)
- ;; Find the lowest active article in this group.
- (let ((active (nth 1 (assoc newsgroup nnbabyl-group-alist))))
- (goto-char (point-min))
- (while (and (not (search-forward
- (nnbabyl-article-string (car active)) nil t))
- (<= (car active) (cdr active)))
- (setcar active (1+ (car active)))
- (goto-char (point-min))))
- (nnmail-save-active nnbabyl-group-alist nnbabyl-active-file)
- (nconc rest articles))))
-
- (deffoo nnbabyl-request-move-article
- (article group server accept-form &optional last)
- (nnbabyl-possibly-change-newsgroup group server)
- (let ((buf (get-buffer-create " *nnbabyl move*"))
- result)
- (and
- (nnbabyl-request-article article group server)
- (save-excursion
- (set-buffer buf)
- (insert-buffer-substring nntp-server-buffer)
- (goto-char (point-min))
- (if (re-search-forward
- "^X-Gnus-Newsgroup:"
- (save-excursion (search-forward "\n\n" nil t) (point)) t)
- (delete-region (progn (beginning-of-line) (point))
- (progn (forward-line 1) (point))))
- (setq result (eval accept-form))
- (kill-buffer (current-buffer))
- result)
- (save-excursion
- (set-buffer nnbabyl-mbox-buffer)
- (goto-char (point-min))
- (if (search-forward (nnbabyl-article-string article) nil t)
- (nnbabyl-delete-mail))
- (and last (save-buffer))))
- result))
-
- (deffoo nnbabyl-request-accept-article (group &optional server last)
- (nnbabyl-possibly-change-newsgroup group server)
- (nnmail-check-syntax)
- (let ((buf (current-buffer))
- result beg)
- (and
- (nnmail-activate 'nnbabyl)
- (save-excursion
- (goto-char (point-min))
- (search-forward "\n\n" nil t)
- (forward-line -1)
- (save-excursion
- (while (re-search-backward "^X-Gnus-Newsgroup: " beg t)
- (delete-region (point) (progn (forward-line 1) (point)))))
- (let ((nnmail-split-methods
- (if (stringp group) (list (list group ""))
- nnmail-split-methods)))
- (setq result (car (nnbabyl-save-mail))))
- (set-buffer nnbabyl-mbox-buffer)
- (goto-char (point-max))
- (search-backward "\n\^_")
- (goto-char (match-end 0))
- (insert-buffer-substring buf)
- (when last
- (save-buffer)
- (nnmail-save-active nnbabyl-group-alist nnbabyl-active-file))
- result))))
-
- (deffoo nnbabyl-request-replace-article (article group buffer)
- (nnbabyl-possibly-change-newsgroup group)
- (save-excursion
- (set-buffer nnbabyl-mbox-buffer)
- (goto-char (point-min))
- (if (not (search-forward (nnbabyl-article-string article) nil t))
- nil
- (nnbabyl-delete-mail t t)
- (insert-buffer-substring buffer)
- (save-buffer)
- t)))
-
- (deffoo nnbabyl-request-delete-group (group &optional force server)
- (nnbabyl-possibly-change-newsgroup group server)
- ;; Delete all articles in GROUP.
- (if (not force)
- () ; Don't delete the articles.
- (save-excursion
- (set-buffer nnbabyl-mbox-buffer)
- (goto-char (point-min))
- ;; Delete all articles in this group.
- (let ((ident (concat "\nX-Gnus-Newsgroup: " nnbabyl-current-group ":"))
- found)
- (while (search-forward ident nil t)
- (setq found t)
- (nnbabyl-delete-mail))
- (and found (save-buffer)))))
- ;; Remove the group from all structures.
- (setq nnbabyl-group-alist
- (delq (assoc group nnbabyl-group-alist) nnbabyl-group-alist)
- nnbabyl-current-group nil)
- ;; Save the active file.
- (nnmail-save-active nnbabyl-group-alist nnbabyl-active-file)
- t)
-
- (deffoo nnbabyl-request-rename-group (group new-name &optional server)
- (nnbabyl-possibly-change-newsgroup group server)
- (save-excursion
- (set-buffer nnbabyl-mbox-buffer)
- (goto-char (point-min))
- (let ((ident (concat "\nX-Gnus-Newsgroup: " nnbabyl-current-group ":"))
- (new-ident (concat "\nX-Gnus-Newsgroup: " new-name ":"))
- found)
- (while (search-forward ident nil t)
- (replace-match new-ident t t)
- (setq found t))
- (and found (save-buffer))))
- (let ((entry (assoc group nnbabyl-group-alist)))
- (and entry (setcar entry new-name))
- (setq nnbabyl-current-group nil)
- ;; Save the new group alist.
- (nnmail-save-active nnbabyl-group-alist nnbabyl-active-file)
- t))
-
-
- ;;; Internal functions.
-
- ;; If FORCE, delete article no matter how many X-Gnus-Newsgroup
- ;; headers there are. If LEAVE-DELIM, don't delete the Unix mbox
- ;; delimiter line.
- (defun nnbabyl-delete-mail (&optional force leave-delim)
- ;; Delete the current X-Gnus-Newsgroup line.
- (or force
- (delete-region
- (progn (beginning-of-line) (point))
- (progn (forward-line 1) (point))))
- ;; Beginning of the article.
- (save-excursion
- (save-restriction
- (widen)
- (narrow-to-region
- (save-excursion
- (re-search-backward (concat "^" nnbabyl-mail-delimiter) nil t)
- (if leave-delim (progn (forward-line 1) (point))
- (match-beginning 0)))
- (progn
- (forward-line 1)
- (or (and (re-search-forward (concat "^" nnbabyl-mail-delimiter)
- nil t)
- (if (and (not (bobp)) leave-delim)
- (progn (forward-line -2) (point))
- (match-beginning 0)))
- (point-max))))
- (goto-char (point-min))
- ;; Only delete the article if no other groups owns it as well.
- (if (or force (not (re-search-forward "^X-Gnus-Newsgroup: " nil t)))
- (delete-region (point-min) (point-max))))))
-
- (defun nnbabyl-possibly-change-newsgroup (newsgroup &optional server)
- (when (and server
- (not (nnbabyl-server-opened server)))
- (nnbabyl-open-server server))
- (if (or (not nnbabyl-mbox-buffer)
- (not (buffer-name nnbabyl-mbox-buffer)))
- (save-excursion (nnbabyl-read-mbox)))
- (or nnbabyl-group-alist
- (nnmail-activate 'nnbabyl))
- (if newsgroup
- (if (assoc newsgroup nnbabyl-group-alist)
- (setq nnbabyl-current-group newsgroup)
- (nnheader-report 'nnbabyl "No such group in file"))
- t))
-
- (defun nnbabyl-article-string (article)
- (if (numberp article)
- (concat "\nX-Gnus-Newsgroup: " nnbabyl-current-group ":"
- (int-to-string article) " ")
- (concat "\nMessage-ID: " article)))
-
- (defun nnbabyl-article-group-number ()
- (save-excursion
- (goto-char (point-min))
- (and (re-search-forward "^X-Gnus-Newsgroup: +\\([^:]+\\):\\([0-9]+\\) "
- nil t)
- (cons (buffer-substring (match-beginning 1) (match-end 1))
- (string-to-int
- (buffer-substring (match-beginning 2) (match-end 2)))))))
-
- (defun nnbabyl-insert-lines ()
- "Insert how many lines and chars there are in the body of the mail."
- (let (lines chars)
- (save-excursion
- (goto-char (point-min))
- (when (search-forward "\n\n" nil t)
- ;; There may be an EOOH line here...
- (when (looking-at "\\*\\*\\* EOOH \\*\\*\\*")
- (search-forward "\n\n" nil t))
- (setq chars (- (point-max) (point))
- lines (max (- (count-lines (point) (point-max)) 1) 0))
- ;; Move back to the end of the headers.
- (goto-char (point-min))
- (search-forward "\n\n" nil t)
- (forward-char -1)
- (save-excursion
- (when (re-search-backward "^Lines: " nil t)
- (delete-region (point) (progn (forward-line 1) (point)))))
- (insert (format "Lines: %d\n" lines))
- chars))))
-
- (defun nnbabyl-save-mail ()
- ;; Called narrowed to an article.
- (let ((group-art (nreverse (nnmail-article-group 'nnbabyl-active-number))))
- (nnbabyl-insert-lines)
- (nnmail-insert-xref group-art)
- (nnbabyl-insert-newsgroup-line group-art)
- (run-hooks 'nnbabyl-prepare-save-mail-hook)
- group-art))
-
- (defun nnbabyl-insert-newsgroup-line (group-art)
- (save-excursion
- (goto-char (point-min))
- (while (looking-at "From ")
- (replace-match "Mail-from: From " t t)
- (forward-line 1))
- ;; If there is a C-l at the beginning of the narrowed region, this
- ;; isn't really a "save", but rather a "scan".
- (goto-char (point-min))
- (or (looking-at "\^L")
- (save-excursion
- (insert "\^L\n0, unseen,,\n*** EOOH ***\n")
- (goto-char (point-max))
- (insert "\^_\n")))
- (if (search-forward "\n\n" nil t)
- (progn
- (forward-char -1)
- (while group-art
- (insert (format "X-Gnus-Newsgroup: %s:%d %s\n"
- (caar group-art) (cdar group-art)
- (current-time-string)))
- (setq group-art (cdr group-art)))))
- t))
-
- (defun nnbabyl-active-number (group)
- ;; Find the next article number in GROUP.
- (let ((active (cadr (assoc group nnbabyl-group-alist))))
- (if active
- (setcdr active (1+ (cdr active)))
- ;; This group is new, so we create a new entry for it.
- ;; This might be a bit naughty... creating groups on the drop of
- ;; a hat, but I don't know...
- (setq nnbabyl-group-alist (cons (list group (setq active (cons 1 1)))
- nnbabyl-group-alist)))
- (cdr active)))
-
- (defun nnbabyl-read-mbox ()
- (nnmail-activate 'nnbabyl)
- (unless (file-exists-p nnbabyl-mbox-file)
- ;; Create a new, empty RMAIL mbox file.
- (save-excursion
- (set-buffer (setq nnbabyl-mbox-buffer
- (create-file-buffer nnbabyl-mbox-file)))
- (setq buffer-file-name nnbabyl-mbox-file)
- (insert "BABYL OPTIONS:\n\n\^_")
- (write-region (point-min) (point-max) nnbabyl-mbox-file t 'nomesg)))
-
- (if (and nnbabyl-mbox-buffer
- (buffer-name nnbabyl-mbox-buffer)
- (save-excursion
- (set-buffer nnbabyl-mbox-buffer)
- (= (buffer-size) (nnheader-file-size nnbabyl-mbox-file))))
- () ; This buffer hasn't changed since we read it last. Possibly.
- (save-excursion
- (let ((delim (concat "^" nnbabyl-mail-delimiter))
- (alist nnbabyl-group-alist)
- start end number)
- (set-buffer (setq nnbabyl-mbox-buffer
- (nnheader-find-file-noselect
- nnbabyl-mbox-file nil 'raw)))
- ;; Save previous buffer mode.
- (setq nnbabyl-previous-buffer-mode
- (cons (cons (point-min) (point-max))
- major-mode))
-
- (buffer-disable-undo (current-buffer))
- (widen)
- (setq buffer-read-only nil)
- (fundamental-mode)
-
- ;; Go through the group alist and compare against
- ;; the rmail file.
- (while alist
- (goto-char (point-max))
- (when (and (re-search-backward
- (format "^X-Gnus-Newsgroup: %s:\\([0-9]+\\) "
- (caar alist)) nil t)
- (> (setq number
- (string-to-number
- (buffer-substring
- (match-beginning 1) (match-end 1))))
- (cdadar alist)))
- (setcdr (cadar alist) (1+ number)))
- (setq alist (cdr alist)))
-
- ;; We go through the mbox and make sure that each and
- ;; every mail belongs to some group or other.
- (goto-char (point-min))
- (re-search-forward delim nil t)
- (setq start (match-end 0))
- (while (re-search-forward delim nil t)
- (setq end (match-end 0))
- (unless (search-backward "\nX-Gnus-Newsgroup: " start t)
- (goto-char end)
- (save-excursion
- (save-restriction
- (narrow-to-region (goto-char start) end)
- (nnbabyl-save-mail)
- (setq end (point-max)))))
- (goto-char (setq start end)))
- (when (buffer-modified-p (current-buffer))
- (save-buffer))
- (nnmail-save-active nnbabyl-group-alist nnbabyl-active-file)))))
-
- (defun nnbabyl-remove-incoming-delims ()
- (goto-char (point-min))
- (while (search-forward "\^_" nil t)
- (replace-match "?" t t)))
-
- (defun nnbabyl-check-mbox ()
- "Go through the nnbabyl mbox and make sure that no article numbers are reused."
- (interactive)
- (let ((idents (make-vector 1000 0))
- id)
- (save-excursion
- (when (or (not nnbabyl-mbox-buffer)
- (not (buffer-name nnbabyl-mbox-buffer)))
- (nnbabyl-read-mbox))
- (set-buffer nnbabyl-mbox-buffer)
- (goto-char (point-min))
- (while (re-search-forward "^X-Gnus-Newsgroup: \\([^ ]+\\) " nil t)
- (if (intern-soft (setq id (match-string 1)) idents)
- (progn
- (delete-region (progn (beginning-of-line) (point))
- (progn (forward-line 1) (point)))
- (nnheader-message 7 "Moving %s..." id)
- (nnbabyl-save-mail))
- (intern id idents)))
- (when (buffer-modified-p (current-buffer))
- (save-buffer))
- (nnmail-save-active nnbabyl-group-alist nnbabyl-active-file)
- (message ""))))
-
- (provide 'nnbabyl)
-
- ;;; nnbabyl.el ends here
-