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- ;;; nnmbox.el --- mail 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 'message)
- (require 'nnmail)
- (require 'nnoo)
- (eval-when-compile (require 'cl))
-
- (nnoo-declare nnmbox)
-
- (defvoo nnmbox-mbox-file (expand-file-name "~/mbox")
- "The name of the mail box file in the user's home directory.")
-
- (defvoo nnmbox-active-file (expand-file-name "~/.mbox-active")
- "The name of the active file for the mail box.")
-
- (defvoo nnmbox-get-new-mail t
- "If non-nil, nnmbox will check the incoming mail file and split the mail.")
-
- (defvoo nnmbox-prepare-save-mail-hook nil
- "Hook run narrowed to an article before saving.")
-
-
-
- (defconst nnmbox-version "nnmbox 1.0"
- "nnmbox version.")
-
- (defvoo nnmbox-current-group nil
- "Current nnmbox news group directory.")
-
- (defconst nnmbox-mbox-buffer nil)
-
- (defvoo nnmbox-status-string "")
-
- (defvoo nnmbox-group-alist nil)
- (defvoo nnmbox-active-timestamp nil)
-
-
-
- ;;; Interface functions
-
- (nnoo-define-basics nnmbox)
-
- (deffoo nnmbox-retrieve-headers (sequence &optional newsgroup server fetch-old)
- (save-excursion
- (set-buffer nntp-server-buffer)
- (erase-buffer)
- (let ((number (length sequence))
- (count 0)
- article art-string start stop)
- (nnmbox-possibly-change-newsgroup newsgroup server)
- (while sequence
- (setq article (car sequence))
- (setq art-string (nnmbox-article-string article))
- (set-buffer nnmbox-mbox-buffer)
- (if (or (search-forward art-string nil t)
- (progn (goto-char (point-min))
- (search-forward art-string nil t)))
- (progn
- (setq start
- (save-excursion
- (re-search-backward
- (concat "^" message-unix-mail-delimiter) nil t)
- (point)))
- (search-forward "\n\n" nil t)
- (setq stop (1- (point)))
- (set-buffer nntp-server-buffer)
- (insert (format "221 %d Article retrieved.\n" article))
- (insert-buffer-substring nnmbox-mbox-buffer start stop)
- (goto-char (point-max))
- (insert ".\n")))
- (setq sequence (cdr sequence))
- (setq count (1+ count))
- (and (numberp nnmail-large-newsgroup)
- (> number nnmail-large-newsgroup)
- (zerop (% count 20))
- (nnheader-message 5 "nnmbox: Receiving headers... %d%%"
- (/ (* count 100) number))))
-
- (and (numberp nnmail-large-newsgroup)
- (> number nnmail-large-newsgroup)
- (nnheader-message 5 "nnmbox: Receiving headers...done"))
-
- (set-buffer nntp-server-buffer)
- (nnheader-fold-continuation-lines)
- 'headers)))
-
- (deffoo nnmbox-open-server (server &optional defs)
- (nnoo-change-server 'nnmbox server defs)
- (cond
- ((not (file-exists-p nnmbox-mbox-file))
- (nnmbox-close-server)
- (nnheader-report 'nnmbox "No such file: %s" nnmbox-mbox-file))
- ((file-directory-p nnmbox-mbox-file)
- (nnmbox-close-server)
- (nnheader-report 'nnmbox "Not a regular file: %s" nnmbox-mbox-file))
- (t
- (nnheader-report 'nnmbox "Opened server %s using mbox %s" server
- nnmbox-mbox-file)
- t)))
-
- (deffoo nnmbox-close-server (&optional server)
- (when (and nnmbox-mbox-buffer
- (buffer-name nnmbox-mbox-buffer))
- (kill-buffer nnmbox-mbox-buffer))
- (nnoo-close-server 'nnmbox server)
- t)
-
- (deffoo nnmbox-server-opened (&optional server)
- (and (nnoo-current-server-p 'nnmbox server)
- nnmbox-mbox-buffer
- (buffer-name nnmbox-mbox-buffer)
- nntp-server-buffer
- (buffer-name nntp-server-buffer)))
-
- (deffoo nnmbox-request-article (article &optional newsgroup server buffer)
- (nnmbox-possibly-change-newsgroup newsgroup server)
- (save-excursion
- (set-buffer nnmbox-mbox-buffer)
- (goto-char (point-min))
- (if (search-forward (nnmbox-article-string article) nil t)
- (let (start stop)
- (re-search-backward (concat "^" message-unix-mail-delimiter) nil t)
- (setq start (point))
- (forward-line 1)
- (or (and (re-search-forward
- (concat "^" message-unix-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 nnmbox-mbox-buffer start stop)
- (goto-char (point-min))
- (while (looking-at "From ")
- (delete-char 5)
- (insert "X-From-Line: ")
- (forward-line 1))
- (if (numberp article)
- (cons nnmbox-current-group article)
- (nnmbox-article-group-number)))))))
-
- (deffoo nnmbox-request-group (group &optional server dont-check)
- (let ((active (cadr (assoc group nnmbox-group-alist))))
- (cond
- ((or (null active)
- (null (nnmbox-possibly-change-newsgroup group server)))
- (nnheader-report 'nnmbox "No such group: %s" group))
- (dont-check
- (nnheader-report 'nnmbox "Selected group %s" group)
- (nnheader-insert ""))
- (t
- (nnheader-report 'nnmbox "Selected group %s" group)
- (nnheader-insert "211 %d %d %d %s\n"
- (1+ (- (cdr active) (car active)))
- (car active) (cdr active) group)))))
-
- (deffoo nnmbox-request-scan (&optional group server)
- (nnmbox-read-mbox)
- (nnmail-get-new-mail
- 'nnmbox
- (lambda ()
- (save-excursion
- (set-buffer nnmbox-mbox-buffer)
- (save-buffer)))
- nnmbox-mbox-file group
- (lambda ()
- (save-excursion
- (let ((in-buf (current-buffer)))
- (set-buffer nnmbox-mbox-buffer)
- (goto-char (point-max))
- (insert-buffer-substring in-buf)))
- (nnmail-save-active nnmbox-group-alist nnmbox-active-file))))
-
- (deffoo nnmbox-close-group (group &optional server)
- t)
-
- (deffoo nnmbox-request-list (&optional server)
- (save-excursion
- (nnmail-find-file nnmbox-active-file)
- (setq nnmbox-group-alist (nnmail-get-active))))
-
- (deffoo nnmbox-request-newgroups (date &optional server)
- (nnmbox-request-list server))
-
- (deffoo nnmbox-request-list-newsgroups (&optional server)
- (nnheader-report 'nnmbox "LIST NEWSGROUPS is not implemented."))
-
- (deffoo nnmbox-request-expire-articles
- (articles newsgroup &optional server force)
- (nnmbox-possibly-change-newsgroup newsgroup server)
- (let* ((is-old t)
- rest)
- (nnmail-activate 'nnmbox)
-
- (save-excursion
- (set-buffer nnmbox-mbox-buffer)
- (while (and articles is-old)
- (goto-char (point-min))
- (if (search-forward (nnmbox-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)
- (nnmbox-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 nnmbox-group-alist))))
- (goto-char (point-min))
- (while (and (not (search-forward
- (nnmbox-article-string (car active)) nil t))
- (<= (car active) (cdr active)))
- (setcar active (1+ (car active)))
- (goto-char (point-min))))
- (nnmail-save-active nnmbox-group-alist nnmbox-active-file)
- (nconc rest articles))))
-
- (deffoo nnmbox-request-move-article
- (article group server accept-form &optional last)
- (nnmbox-possibly-change-newsgroup group server)
- (let ((buf (get-buffer-create " *nnmbox move*"))
- result)
- (and
- (nnmbox-request-article article group server)
- (save-excursion
- (set-buffer buf)
- (buffer-disable-undo (current-buffer))
- (erase-buffer)
- (insert-buffer-substring nntp-server-buffer)
- (goto-char (point-min))
- (while (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 buf)
- result)
- (save-excursion
- (set-buffer nnmbox-mbox-buffer)
- (goto-char (point-min))
- (if (search-forward (nnmbox-article-string article) nil t)
- (nnmbox-delete-mail))
- (and last (save-buffer))))
- result))
-
- (deffoo nnmbox-request-accept-article (group &optional server last)
- (nnmbox-possibly-change-newsgroup group server)
- (nnmail-check-syntax)
- (let ((buf (current-buffer))
- result)
- (goto-char (point-min))
- (if (looking-at "X-From-Line: ")
- (replace-match "From ")
- (insert "From nobody " (current-time-string) "\n"))
- (and
- (nnmail-activate 'nnmbox)
- (progn
- (set-buffer buf)
- (goto-char (point-min))
- (search-forward "\n\n" nil t)
- (forward-line -1)
- (while (re-search-backward "^X-Gnus-Newsgroup: " nil t)
- (delete-region (point) (progn (forward-line 1) (point))))
- (setq result (nnmbox-save-mail (and (stringp group) group))))
- (save-excursion
- (set-buffer nnmbox-mbox-buffer)
- (goto-char (point-max))
- (insert-buffer-substring buf)
- (and last (save-buffer))
- result)
- (nnmail-save-active nnmbox-group-alist nnmbox-active-file))
- (car result)))
-
- (deffoo nnmbox-request-replace-article (article group buffer)
- (nnmbox-possibly-change-newsgroup group)
- (save-excursion
- (set-buffer nnmbox-mbox-buffer)
- (goto-char (point-min))
- (if (not (search-forward (nnmbox-article-string article) nil t))
- nil
- (nnmbox-delete-mail t t)
- (insert-buffer-substring buffer)
- (save-buffer)
- t)))
-
- (deffoo nnmbox-request-delete-group (group &optional force server)
- (nnmbox-possibly-change-newsgroup group server)
- ;; Delete all articles in GROUP.
- (if (not force)
- () ; Don't delete the articles.
- (save-excursion
- (set-buffer nnmbox-mbox-buffer)
- (goto-char (point-min))
- ;; Delete all articles in this group.
- (let ((ident (concat "\nX-Gnus-Newsgroup: " nnmbox-current-group ":"))
- found)
- (while (search-forward ident nil t)
- (setq found t)
- (nnmbox-delete-mail))
- (and found (save-buffer)))))
- ;; Remove the group from all structures.
- (setq nnmbox-group-alist
- (delq (assoc group nnmbox-group-alist) nnmbox-group-alist)
- nnmbox-current-group nil)
- ;; Save the active file.
- (nnmail-save-active nnmbox-group-alist nnmbox-active-file)
- t)
-
- (deffoo nnmbox-request-rename-group (group new-name &optional server)
- (nnmbox-possibly-change-newsgroup group server)
- (save-excursion
- (set-buffer nnmbox-mbox-buffer)
- (goto-char (point-min))
- (let ((ident (concat "\nX-Gnus-Newsgroup: " nnmbox-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 nnmbox-group-alist)))
- (and entry (setcar entry new-name))
- (setq nnmbox-current-group nil)
- ;; Save the new group alist.
- (nnmail-save-active nnmbox-group-alist nnmbox-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 nnmbox-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
- (narrow-to-region
- (save-excursion
- (re-search-backward (concat "^" message-unix-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 "^" message-unix-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 nnmbox-possibly-change-newsgroup (newsgroup &optional server)
- (when (and server
- (not (nnmbox-server-opened server)))
- (nnmbox-open-server server))
- (if (or (not nnmbox-mbox-buffer)
- (not (buffer-name nnmbox-mbox-buffer)))
- (save-excursion
- (set-buffer (setq nnmbox-mbox-buffer
- (nnheader-find-file-noselect
- nnmbox-mbox-file nil 'raw)))
- (buffer-disable-undo (current-buffer))))
- (if (not nnmbox-group-alist)
- (nnmail-activate 'nnmbox))
- (if newsgroup
- (if (assoc newsgroup nnmbox-group-alist)
- (setq nnmbox-current-group newsgroup))
- t))
-
- (defun nnmbox-article-string (article)
- (if (numberp article)
- (concat "\nX-Gnus-Newsgroup: " nnmbox-current-group ":"
- (int-to-string article) " ")
- (concat "\nMessage-ID: " article)))
-
- (defun nnmbox-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 nnmbox-save-mail (&optional group)
- "Called narrowed to an article."
- (let* ((nnmail-split-methods
- (if group (list (list group "")) nnmail-split-methods))
- (group-art (nreverse (nnmail-article-group 'nnmbox-active-number)))
- (delim (concat "^" message-unix-mail-delimiter)))
- (goto-char (point-min))
- ;; This might come from somewhere else.
- (unless (looking-at delim)
- (insert "From nobody " (current-time-string) "\n")
- (goto-char (point-min)))
- ;; Quote all "From " lines in the article.
- (forward-line 1)
- (while (re-search-forward delim nil t)
- (beginning-of-line)
- (insert "> "))
- (nnmail-insert-lines)
- (nnmail-insert-xref group-art)
- (nnmbox-insert-newsgroup-line group-art)
- (run-hooks 'nnmail-prepare-save-mail-hook)
- (run-hooks 'nnmbox-prepare-save-mail-hook)
- group-art))
-
- (defun nnmbox-insert-newsgroup-line (group-art)
- (save-excursion
- (goto-char (point-min))
- (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 nnmbox-active-number (group)
- ;; Find the next article number in GROUP.
- (let ((active (cadr (assoc group nnmbox-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 nnmbox-group-alist (cons (list group (setq active (cons 1 1)))
- nnmbox-group-alist)))
- (cdr active)))
-
- (defun nnmbox-read-mbox ()
- (nnmail-activate 'nnmbox)
- (if (not (file-exists-p nnmbox-mbox-file))
- (write-region 1 1 nnmbox-mbox-file t 'nomesg))
- (if (and nnmbox-mbox-buffer
- (buffer-name nnmbox-mbox-buffer)
- (save-excursion
- (set-buffer nnmbox-mbox-buffer)
- (= (buffer-size) (nnheader-file-size nnmbox-mbox-file))))
- ()
- (save-excursion
- (let ((delim (concat "^" message-unix-mail-delimiter))
- (alist nnmbox-group-alist)
- start end number)
- (set-buffer (setq nnmbox-mbox-buffer
- (nnheader-find-file-noselect
- nnmbox-mbox-file nil 'raw)))
- (buffer-disable-undo (current-buffer))
-
- ;; Go through the group alist and compare against
- ;; the mbox 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)))
-
- (goto-char (point-min))
- (while (re-search-forward delim nil t)
- (setq start (match-beginning 0))
- (if (not (search-forward "\nX-Gnus-Newsgroup: "
- (save-excursion
- (setq end
- (or
- (and
- (re-search-forward delim nil t)
- (match-beginning 0))
- (point-max))))
- t))
- (save-excursion
- (save-restriction
- (narrow-to-region start end)
- (nnmbox-save-mail))))
- (goto-char end))))))
-
- (provide 'nnmbox)
-
- ;;; nnmbox.el ends here
-