[bpt/emacs.git] / lisp / nnmbox.el

;;; 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.")

\f

(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)

\f

;;; 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))

\f
;;; 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
Commit	Line	Data
41487370	1	;;; nnmbox.el --- mail mbox access for Gnus
231f989b	2	;; Copyright (C) 1995,96 Free Software Foundation, Inc.
41487370 LMI	3
	4	;; Author: Lars Magne Ingebrigtsen <larsi@ifi.uio.no>
	5	;; Masanobu UMEDA <umerin@flab.flab.fujitsu.junet>
	6	;; Keywords: news, mail
	7
	8	;; This file is part of GNU Emacs.
	9
	10	;; GNU Emacs is free software; you can redistribute it and/or modify
	11	;; it under the terms of the GNU General Public License as published by
	12	;; the Free Software Foundation; either version 2, or (at your option)
	13	;; any later version.
	14
	15	;; GNU Emacs is distributed in the hope that it will be useful,
	16	;; but WITHOUT ANY WARRANTY; without even the implied warranty of
	17	;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	18	;; GNU General Public License for more details.
	19
	20	;; You should have received a copy of the GNU General Public License
b578f267 EN	21	;; along with GNU Emacs; see the file COPYING. If not, write to the
	22	;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
	23	;; Boston, MA 02111-1307, USA.
41487370 LMI	24
	25	;;; Commentary:
	26
	27	;; For an overview of what the interface functions do, please see the
	28	;; Gnus sources.
	29
	30	;;; Code:
	31
	32	(require 'nnheader)
231f989b	33	(require 'message)
41487370	34	(require 'nnmail)
231f989b LMI	35	(require 'nnoo)
	36	(eval-when-compile (require 'cl))
	37
	38	(nnoo-declare nnmbox)
41487370	39
231f989b	40	(defvoo nnmbox-mbox-file (expand-file-name "~/mbox")
41487370 LMI	41	"The name of the mail box file in the user's home directory.")
41487370 LMI	42
231f989b	43	(defvoo nnmbox-active-file (expand-file-name "~/.mbox-active")
41487370 LMI	44	"The name of the active file for the mail box.")
41487370 LMI	45
231f989b	46	(defvoo nnmbox-get-new-mail t
41487370 LMI	47	"If non-nil, nnmbox will check the incoming mail file and split the mail.")
41487370 LMI	48
231f989b	49	(defvoo nnmbox-prepare-save-mail-hook nil
41487370 LMI	50	"Hook run narrowed to an article before saving.")
	51
	52	\f
	53
	54	(defconst nnmbox-version "nnmbox 1.0"
	55	"nnmbox version.")
	56
231f989b	57	(defvoo nnmbox-current-group nil
41487370 LMI	58	"Current nnmbox news group directory.")
	59
	60	(defconst nnmbox-mbox-buffer nil)
	61
231f989b	62	(defvoo nnmbox-status-string "")
41487370	63
231f989b LMI	64	(defvoo nnmbox-group-alist nil)
231f989b LMI	65	(defvoo nnmbox-active-timestamp nil)
41487370 LMI	66
	67	\f
	68
	69	;;; Interface functions
	70
231f989b LMI	71	(nnoo-define-basics nnmbox)
	72
	73	(deffoo nnmbox-retrieve-headers (sequence &optional newsgroup server fetch-old)
41487370 LMI	74	(save-excursion
	75	(set-buffer nntp-server-buffer)
	76	(erase-buffer)
	77	(let ((number (length sequence))
	78	(count 0)
	79	article art-string start stop)
231f989b LMI	80	(nnmbox-possibly-change-newsgroup newsgroup server)
	81	(while sequence
	82	(setq article (car sequence))
	83	(setq art-string (nnmbox-article-string article))
	84	(set-buffer nnmbox-mbox-buffer)
	85	(if (or (search-forward art-string nil t)
	86	(progn (goto-char (point-min))
	87	(search-forward art-string nil t)))
	88	(progn
	89	(setq start
	90	(save-excursion
	91	(re-search-backward
	92	(concat "^" message-unix-mail-delimiter) nil t)
	93	(point)))
	94	(search-forward "\n\n" nil t)
	95	(setq stop (1- (point)))
	96	(set-buffer nntp-server-buffer)
	97	(insert (format "221 %d Article retrieved.\n" article))
	98	(insert-buffer-substring nnmbox-mbox-buffer start stop)
	99	(goto-char (point-max))
	100	(insert ".\n")))
	101	(setq sequence (cdr sequence))
	102	(setq count (1+ count))
41487370 LMI	103	(and (numberp nnmail-large-newsgroup)
41487370 LMI	104	(> number nnmail-large-newsgroup)
231f989b LMI	105	(zerop (% count 20))
	106	(nnheader-message 5 "nnmbox: Receiving headers... %d%%"
	107	(/ (* count 100) number))))
	108
	109	(and (numberp nnmail-large-newsgroup)
	110	(> number nnmail-large-newsgroup)
	111	(nnheader-message 5 "nnmbox: Receiving headers...done"))
	112
	113	(set-buffer nntp-server-buffer)
	114	(nnheader-fold-continuation-lines)
	115	'headers)))
	116
	117	(deffoo nnmbox-open-server (server &optional defs)
	118	(nnoo-change-server 'nnmbox server defs)
	119	(cond
	120	((not (file-exists-p nnmbox-mbox-file))
	121	(nnmbox-close-server)
	122	(nnheader-report 'nnmbox "No such file: %s" nnmbox-mbox-file))
	123	((file-directory-p nnmbox-mbox-file)
	124	(nnmbox-close-server)
	125	(nnheader-report 'nnmbox "Not a regular file: %s" nnmbox-mbox-file))
	126	(t
	127	(nnheader-report 'nnmbox "Opened server %s using mbox %s" server
	128	nnmbox-mbox-file)
	129	t)))
	130
	131	(deffoo nnmbox-close-server (&optional server)
	132	(when (and nnmbox-mbox-buffer
	133	(buffer-name nnmbox-mbox-buffer))
	134	(kill-buffer nnmbox-mbox-buffer))
	135	(nnoo-close-server 'nnmbox server)
41487370 LMI	136	t)
41487370 LMI	137
231f989b LMI	138	(deffoo nnmbox-server-opened (&optional server)
231f989b LMI	139	(and (nnoo-current-server-p 'nnmbox server)
41487370 LMI	140	nnmbox-mbox-buffer
	141	(buffer-name nnmbox-mbox-buffer)
	142	nntp-server-buffer
	143	(buffer-name nntp-server-buffer)))
	144
231f989b LMI	145	(deffoo nnmbox-request-article (article &optional newsgroup server buffer)
231f989b LMI	146	(nnmbox-possibly-change-newsgroup newsgroup server)
41487370	147	(save-excursion
231f989b LMI	148	(set-buffer nnmbox-mbox-buffer)
	149	(goto-char (point-min))
	150	(if (search-forward (nnmbox-article-string article) nil t)
	151	(let (start stop)
	152	(re-search-backward (concat "^" message-unix-mail-delimiter) nil t)
	153	(setq start (point))
	154	(forward-line 1)
	155	(or (and (re-search-forward
	156	(concat "^" message-unix-mail-delimiter) nil t)
	157	(forward-line -1))
	158	(goto-char (point-max)))
	159	(setq stop (point))
	160	(let ((nntp-server-buffer (or buffer nntp-server-buffer)))
41487370 LMI	161	(set-buffer nntp-server-buffer)
41487370 LMI	162	(erase-buffer)
231f989b LMI	163	(insert-buffer-substring nnmbox-mbox-buffer start stop)
	164	(goto-char (point-min))
	165	(while (looking-at "From ")
	166	(delete-char 5)
	167	(insert "X-From-Line: ")
	168	(forward-line 1))
	169	(if (numberp article)
	170	(cons nnmbox-current-group article)
	171	(nnmbox-article-group-number)))))))
	172
	173	(deffoo nnmbox-request-group (group &optional server dont-check)
	174	(let ((active (cadr (assoc group nnmbox-group-alist))))
	175	(cond
	176	((or (null active)
	177	(null (nnmbox-possibly-change-newsgroup group server)))
	178	(nnheader-report 'nnmbox "No such group: %s" group))
	179	(dont-check
	180	(nnheader-report 'nnmbox "Selected group %s" group)
	181	(nnheader-insert ""))
	182	(t
	183	(nnheader-report 'nnmbox "Selected group %s" group)
	184	(nnheader-insert "211 %d %d %d %s\n"
	185	(1+ (- (cdr active) (car active)))
	186	(car active) (cdr active) group)))))
	187
	188	(deffoo nnmbox-request-scan (&optional group server)
	189	(nnmbox-read-mbox)
	190	(nnmail-get-new-mail
	191	'nnmbox
	192	(lambda ()
	193	(save-excursion
	194	(set-buffer nnmbox-mbox-buffer)
	195	(save-buffer)))
	196	nnmbox-mbox-file group
	197	(lambda ()
	198	(save-excursion
	199	(let ((in-buf (current-buffer)))
	200	(set-buffer nnmbox-mbox-buffer)
	201	(goto-char (point-max))
	202	(insert-buffer-substring in-buf)))
	203	(nnmail-save-active nnmbox-group-alist nnmbox-active-file))))
	204
	205	(deffoo nnmbox-close-group (group &optional server)
41487370 LMI	206	t)
41487370 LMI	207
231f989b	208	(deffoo nnmbox-request-list (&optional server)
41487370	209	(save-excursion
231f989b LMI	210	(nnmail-find-file nnmbox-active-file)
231f989b LMI	211	(setq nnmbox-group-alist (nnmail-get-active))))
41487370	212
231f989b	213	(deffoo nnmbox-request-newgroups (date &optional server)
41487370 LMI	214	(nnmbox-request-list server))
41487370 LMI	215
231f989b LMI	216	(deffoo nnmbox-request-list-newsgroups (&optional server)
231f989b LMI	217	(nnheader-report 'nnmbox "LIST NEWSGROUPS is not implemented."))
41487370	218
231f989b	219	(deffoo nnmbox-request-expire-articles
41487370	220	(articles newsgroup &optional server force)
231f989b LMI	221	(nnmbox-possibly-change-newsgroup newsgroup server)
231f989b LMI	222	(let* ((is-old t)
41487370 LMI	223	rest)
	224	(nnmail-activate 'nnmbox)
	225
	226	(save-excursion
	227	(set-buffer nnmbox-mbox-buffer)
	228	(while (and articles is-old)
	229	(goto-char (point-min))
	230	(if (search-forward (nnmbox-article-string (car articles)) nil t)
231f989b LMI	231	(if (setq is-old
	232	(nnmail-expired-article-p
	233	newsgroup
	234	(buffer-substring
	235	(point) (progn (end-of-line) (point))) force))
41487370	236	(progn
231f989b LMI	237	(nnheader-message 5 "Deleting article %d in %s..."
231f989b LMI	238	(car articles) newsgroup)
41487370 LMI	239	(nnmbox-delete-mail))
	240	(setq rest (cons (car articles) rest))))
	241	(setq articles (cdr articles)))
	242	(save-buffer)
	243	;; Find the lowest active article in this group.
	244	(let ((active (nth 1 (assoc newsgroup nnmbox-group-alist))))
	245	(goto-char (point-min))
	246	(while (and (not (search-forward
	247	(nnmbox-article-string (car active)) nil t))
	248	(<= (car active) (cdr active)))
	249	(setcar active (1+ (car active)))
	250	(goto-char (point-min))))
	251	(nnmail-save-active nnmbox-group-alist nnmbox-active-file)
	252	(nconc rest articles))))
	253
231f989b	254	(deffoo nnmbox-request-move-article
41487370	255	(article group server accept-form &optional last)
231f989b	256	(nnmbox-possibly-change-newsgroup group server)
41487370 LMI	257	(let ((buf (get-buffer-create " nnmbox move"))
	258	result)
	259	(and
	260	(nnmbox-request-article article group server)
	261	(save-excursion
	262	(set-buffer buf)
	263	(buffer-disable-undo (current-buffer))
	264	(erase-buffer)
	265	(insert-buffer-substring nntp-server-buffer)
	266	(goto-char (point-min))
	267	(while (re-search-forward
	268	"^X-Gnus-Newsgroup:"
	269	(save-excursion (search-forward "\n\n" nil t) (point)) t)
	270	(delete-region (progn (beginning-of-line) (point))
	271	(progn (forward-line 1) (point))))
	272	(setq result (eval accept-form))
	273	(kill-buffer buf)
	274	result)
	275	(save-excursion
	276	(set-buffer nnmbox-mbox-buffer)
	277	(goto-char (point-min))
	278	(if (search-forward (nnmbox-article-string article) nil t)
	279	(nnmbox-delete-mail))
	280	(and last (save-buffer))))
	281	result))
	282
231f989b LMI	283	(deffoo nnmbox-request-accept-article (group &optional server last)
	284	(nnmbox-possibly-change-newsgroup group server)
	285	(nnmail-check-syntax)
41487370 LMI	286	(let ((buf (current-buffer))
	287	result)
	288	(goto-char (point-min))
	289	(if (looking-at "X-From-Line: ")
	290	(replace-match "From ")
	291	(insert "From nobody " (current-time-string) "\n"))
	292	(and
	293	(nnmail-activate 'nnmbox)
	294	(progn
	295	(set-buffer buf)
	296	(goto-char (point-min))
	297	(search-forward "\n\n" nil t)
	298	(forward-line -1)
	299	(while (re-search-backward "^X-Gnus-Newsgroup: " nil t)
	300	(delete-region (point) (progn (forward-line 1) (point))))
	301	(setq result (nnmbox-save-mail (and (stringp group) group))))
	302	(save-excursion
	303	(set-buffer nnmbox-mbox-buffer)
231f989b	304	(goto-char (point-max))
41487370 LMI	305	(insert-buffer-substring buf)
	306	(and last (save-buffer))
	307	result)
	308	(nnmail-save-active nnmbox-group-alist nnmbox-active-file))
	309	(car result)))
	310
231f989b	311	(deffoo nnmbox-request-replace-article (article group buffer)
41487370 LMI	312	(nnmbox-possibly-change-newsgroup group)
	313	(save-excursion
	314	(set-buffer nnmbox-mbox-buffer)
	315	(goto-char (point-min))
	316	(if (not (search-forward (nnmbox-article-string article) nil t))
	317	nil
	318	(nnmbox-delete-mail t t)
	319	(insert-buffer-substring buffer)
	320	(save-buffer)
	321	t)))
	322
231f989b LMI	323	(deffoo nnmbox-request-delete-group (group &optional force server)
	324	(nnmbox-possibly-change-newsgroup group server)
	325	;; Delete all articles in GROUP.
	326	(if (not force)
	327	() ; Don't delete the articles.
	328	(save-excursion
	329	(set-buffer nnmbox-mbox-buffer)
	330	(goto-char (point-min))
	331	;; Delete all articles in this group.
	332	(let ((ident (concat "\nX-Gnus-Newsgroup: " nnmbox-current-group ":"))
	333	found)
	334	(while (search-forward ident nil t)
	335	(setq found t)
	336	(nnmbox-delete-mail))
	337	(and found (save-buffer)))))
	338	;; Remove the group from all structures.
	339	(setq nnmbox-group-alist
	340	(delq (assoc group nnmbox-group-alist) nnmbox-group-alist)
	341	nnmbox-current-group nil)
	342	;; Save the active file.
	343	(nnmail-save-active nnmbox-group-alist nnmbox-active-file)
	344	t)
	345
	346	(deffoo nnmbox-request-rename-group (group new-name &optional server)
	347	(nnmbox-possibly-change-newsgroup group server)
	348	(save-excursion
	349	(set-buffer nnmbox-mbox-buffer)
	350	(goto-char (point-min))
	351	(let ((ident (concat "\nX-Gnus-Newsgroup: " nnmbox-current-group ":"))
	352	(new-ident (concat "\nX-Gnus-Newsgroup: " new-name ":"))
	353	found)
	354	(while (search-forward ident nil t)
	355	(replace-match new-ident t t)
	356	(setq found t))
	357	(and found (save-buffer))))
	358	(let ((entry (assoc group nnmbox-group-alist)))
	359	(and entry (setcar entry new-name))
	360	(setq nnmbox-current-group nil)
	361	;; Save the new group alist.
	362	(nnmail-save-active nnmbox-group-alist nnmbox-active-file)
	363	t))
	364
41487370 LMI	365	\f
	366	;;; Internal functions.
	367
	368	;; If FORCE, delete article no matter how many X-Gnus-Newsgroup
	369	;; headers there are. If LEAVE-DELIM, don't delete the Unix mbox
a7acbbe4	370	;; delimiter line.
41487370 LMI	371	(defun nnmbox-delete-mail (&optional force leave-delim)
	372	;; Delete the current X-Gnus-Newsgroup line.
	373	(or force
	374	(delete-region
	375	(progn (beginning-of-line) (point))
	376	(progn (forward-line 1) (point))))
	377	;; Beginning of the article.
	378	(save-excursion
	379	(save-restriction
	380	(narrow-to-region
	381	(save-excursion
231f989b	382	(re-search-backward (concat "^" message-unix-mail-delimiter) nil t)
41487370 LMI	383	(if leave-delim (progn (forward-line 1) (point))
	384	(match-beginning 0)))
	385	(progn
	386	(forward-line 1)
231f989b	387	(or (and (re-search-forward (concat "^" message-unix-mail-delimiter)
41487370 LMI	388	nil t)
	389	(if (and (not (bobp)) leave-delim)
	390	(progn (forward-line -2) (point))
	391	(match-beginning 0)))
	392	(point-max))))
	393	(goto-char (point-min))
	394	;; Only delete the article if no other groups owns it as well.
	395	(if (or force (not (re-search-forward "^X-Gnus-Newsgroup: " nil t)))
	396	(delete-region (point-min) (point-max))))))
	397
231f989b LMI	398	(defun nnmbox-possibly-change-newsgroup (newsgroup &optional server)
	399	(when (and server
	400	(not (nnmbox-server-opened server)))
	401	(nnmbox-open-server server))
41487370 LMI	402	(if (or (not nnmbox-mbox-buffer)
	403	(not (buffer-name nnmbox-mbox-buffer)))
	404	(save-excursion
	405	(set-buffer (setq nnmbox-mbox-buffer
	406	(nnheader-find-file-noselect
	407	nnmbox-mbox-file nil 'raw)))
	408	(buffer-disable-undo (current-buffer))))
	409	(if (not nnmbox-group-alist)
	410	(nnmail-activate 'nnmbox))
	411	(if newsgroup
	412	(if (assoc newsgroup nnmbox-group-alist)
231f989b LMI	413	(setq nnmbox-current-group newsgroup))
231f989b LMI	414	t))
41487370 LMI	415
41487370 LMI	416	(defun nnmbox-article-string (article)
231f989b LMI	417	(if (numberp article)
	418	(concat "\nX-Gnus-Newsgroup: " nnmbox-current-group ":"
	419	(int-to-string article) " ")
	420	(concat "\nMessage-ID: " article)))
	421
	422	(defun nnmbox-article-group-number ()
	423	(save-excursion
	424	(goto-char (point-min))
	425	(and (re-search-forward "^X-Gnus-Newsgroup: +\\([^:]+\\):\\([0-9]+\\) "
	426	nil t)
	427	(cons (buffer-substring (match-beginning 1) (match-end 1))
	428	(string-to-int
	429	(buffer-substring (match-beginning 2) (match-end 2)))))))
41487370 LMI	430
	431	(defun nnmbox-save-mail (&optional group)
	432	"Called narrowed to an article."
	433	(let* ((nnmail-split-methods
	434	(if group (list (list group "")) nnmail-split-methods))
231f989b LMI	435	(group-art (nreverse (nnmail-article-group 'nnmbox-active-number)))
	436	(delim (concat "^" message-unix-mail-delimiter)))
	437	(goto-char (point-min))
	438	;; This might come from somewhere else.
	439	(unless (looking-at delim)
	440	(insert "From nobody " (current-time-string) "\n")
	441	(goto-char (point-min)))
	442	;; Quote all "From " lines in the article.
	443	(forward-line 1)
	444	(while (re-search-forward delim nil t)
	445	(beginning-of-line)
	446	(insert "> "))
41487370 LMI	447	(nnmail-insert-lines)
	448	(nnmail-insert-xref group-art)
	449	(nnmbox-insert-newsgroup-line group-art)
231f989b LMI	450	(run-hooks 'nnmail-prepare-save-mail-hook)
231f989b LMI	451	(run-hooks 'nnmbox-prepare-save-mail-hook)
41487370 LMI	452	group-art))
	453
	454	(defun nnmbox-insert-newsgroup-line (group-art)
	455	(save-excursion
	456	(goto-char (point-min))
	457	(if (search-forward "\n\n" nil t)
	458	(progn
	459	(forward-char -1)
	460	(while group-art
	461	(insert (format "X-Gnus-Newsgroup: %s:%d %s\n"
231f989b	462	(caar group-art) (cdar group-art)
41487370 LMI	463	(current-time-string)))
	464	(setq group-art (cdr group-art)))))
	465	t))
	466
	467	(defun nnmbox-active-number (group)
	468	;; Find the next article number in GROUP.
231f989b	469	(let ((active (cadr (assoc group nnmbox-group-alist))))
41487370 LMI	470	(if active
	471	(setcdr active (1+ (cdr active)))
	472	;; This group is new, so we create a new entry for it.
	473	;; This might be a bit naughty... creating groups on the drop of
	474	;; a hat, but I don't know...
	475	(setq nnmbox-group-alist (cons (list group (setq active (cons 1 1)))
	476	nnmbox-group-alist)))
	477	(cdr active)))
	478
	479	(defun nnmbox-read-mbox ()
	480	(nnmail-activate 'nnmbox)
	481	(if (not (file-exists-p nnmbox-mbox-file))
	482	(write-region 1 1 nnmbox-mbox-file t 'nomesg))
	483	(if (and nnmbox-mbox-buffer
	484	(buffer-name nnmbox-mbox-buffer)
	485	(save-excursion
	486	(set-buffer nnmbox-mbox-buffer)
c4c7f54c	487	(= (buffer-size) (nnheader-file-size nnmbox-mbox-file))))
41487370 LMI	488	()
41487370 LMI	489	(save-excursion
231f989b LMI	490	(let ((delim (concat "^" message-unix-mail-delimiter))
	491	(alist nnmbox-group-alist)
	492	start end number)
41487370	493	(set-buffer (setq nnmbox-mbox-buffer
231f989b	494	(nnheader-find-file-noselect
41487370 LMI	495	nnmbox-mbox-file nil 'raw)))
41487370 LMI	496	(buffer-disable-undo (current-buffer))
231f989b LMI	497
	498	;; Go through the group alist and compare against
	499	;; the mbox file.
	500	(while alist
	501	(goto-char (point-max))
	502	(when (and (re-search-backward
	503	(format "^X-Gnus-Newsgroup: %s:\\([0-9]+\\) "
	504	(caar alist)) nil t)
	505	(>= (setq number
	506	(string-to-number
	507	(buffer-substring
	508	(match-beginning 1) (match-end 1))))
	509	(cdadar alist)))
	510	(setcdr (cadar alist) (1+ number)))
	511	(setq alist (cdr alist)))
	512
41487370 LMI	513	(goto-char (point-min))
	514	(while (re-search-forward delim nil t)
	515	(setq start (match-beginning 0))
	516	(if (not (search-forward "\nX-Gnus-Newsgroup: "
	517	(save-excursion
	518	(setq end
	519	(or
	520	(and
	521	(re-search-forward delim nil t)
	522	(match-beginning 0))
	523	(point-max))))
	524	t))
	525	(save-excursion
	526	(save-restriction
	527	(narrow-to-region start end)
	528	(nnmbox-save-mail))))
	529	(goto-char end))))))
	530
41487370 LMI	531	(provide 'nnmbox)
	532
	533	;;; nnmbox.el ends here