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Diffstat (limited to 'lisp/gnus/nnmbox.el')
| -rw-r--r-- | lisp/gnus/nnmbox.el | 552 |
1 files changed, 552 insertions, 0 deletions
diff --git a/lisp/gnus/nnmbox.el b/lisp/gnus/nnmbox.el new file mode 100644 index 00000000000..a5c46769e3c --- /dev/null +++ b/lisp/gnus/nnmbox.el @@ -0,0 +1,552 @@ +;;; nnmbox.el --- mail mbox access for Gnus +;; Copyright (C) 1995,96,97 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) + (when (or (search-forward art-string nil t) + (progn (goto-char (point-min)) + (search-forward art-string nil t))) + (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) + (nnmbox-create-mbox) + (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)) + (when (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-possibly-change-newsgroup group server) + (nnmbox-read-mbox) + (nnmail-get-new-mail + 'nnmbox + (lambda () + (save-excursion + (set-buffer nnmbox-mbox-buffer) + (save-buffer))) + (file-name-directory 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)) + t)) + +(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)) + (when (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)) + (push (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) + (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 + (nnmbox-possibly-change-newsgroup group server) + (set-buffer nnmbox-mbox-buffer) + (goto-char (point-min)) + (when (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)) + ;; The From line may have been quoted by movemail. + (when (looking-at (concat ">" message-unix-mail-delimiter)) + (delete-char 1)) + (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)))) + (when nnmail-cache-accepted-message-ids + (nnmail-cache-insert (nnmail-fetch-field "message-id"))) + (setq result (if (stringp group) + (list (cons group (nnmbox-active-number group))) + (nnmail-article-group 'nnmbox-active-number))) + (if (and (null result) + (yes-or-no-p "Moved to `junk' group; delete article? ")) + (setq result 'junk) + (setq result (car (nnmbox-save-mail result))))) + (save-excursion + (set-buffer nnmbox-mbox-buffer) + (goto-char (point-max)) + (insert-buffer-substring buf) + (when last + (when nnmail-cache-accepted-message-ids + (nnmail-cache-close)) + (nnmail-save-active nnmbox-group-alist nnmbox-active-file) + (save-buffer)))) + 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)) + (when 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)) + (when found + (save-buffer)))) + (let ((entry (assoc group nnmbox-group-alist))) + (when 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. + (when (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)) + (when (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)))) + (when (not nnmbox-group-alist) + (nnmail-activate 'nnmbox)) + (if newsgroup + (when (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)) + (when (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 (group-art) + "Called narrowed to an article." + (let ((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)) + (when (search-forward "\n\n" nil t) + (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... + (push (list group (setq active (cons 1 1))) + nnmbox-group-alist)) + (cdr active))) + +(defun nnmbox-create-mbox () + (when (not (file-exists-p nnmbox-mbox-file)) + (nnmail-write-region 1 1 nnmbox-mbox-file t 'nomesg))) + +(defun nnmbox-read-mbox () + (nnmail-activate 'nnmbox) + (nnmbox-create-mbox) + (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)) + (when (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 + (nnmail-article-group 'nnmbox-active-number))))) + (goto-char end)))))) + +(provide 'nnmbox) + +;;; nnmbox.el ends here |