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

;;; nnmbox.el --- mail mbox access for Gnus
;; Copyright (C) 1995,96,97,98 Free Software Foundation, Inc.

;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
;; 	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.

;; 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)
	(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-create-group (group &optional server args)
  (nnmail-activate 'nnmbox)
  (unless (assoc group nnmbox-group-alist)
    (push (list group (cons 1 0))
	  nnmbox-group-alist)
    (nnmail-save-active nnmbox-group-alist nnmbox-active-file))
  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))

\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.
      (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
Commit	Line	Data
eec82323	1	;;; nnmbox.el --- mail mbox access for Gnus
6748645f	2	;; Copyright (C) 1995,96,97,98 Free Software Foundation, Inc.
eec82323	3
6748645f	4	;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
eec82323 LMI	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
eec82323 LMI	15	;; You should have received a copy of the GNU General Public License
	16	;; along with GNU Emacs; see the file COPYING. If not, write to the
	17	;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
	18	;; Boston, MA 02111-1307, USA.
	19
	20	;;; Commentary:
	21
	22	;; For an overview of what the interface functions do, please see the
	23	;; Gnus sources.
	24
	25	;;; Code:
	26
	27	(require 'nnheader)
	28	(require 'message)
	29	(require 'nnmail)
	30	(require 'nnoo)
	31	(eval-when-compile (require 'cl))
	32
	33	(nnoo-declare nnmbox)
	34
	35	(defvoo nnmbox-mbox-file (expand-file-name "~/mbox")
	36	"The name of the mail box file in the user's home directory.")
	37
	38	(defvoo nnmbox-active-file (expand-file-name "~/.mbox-active")
	39	"The name of the active file for the mail box.")
	40
	41	(defvoo nnmbox-get-new-mail t
	42	"If non-nil, nnmbox will check the incoming mail file and split the mail.")
	43
	44	(defvoo nnmbox-prepare-save-mail-hook nil
	45	"Hook run narrowed to an article before saving.")
	46
	47	\f
	48
	49	(defconst nnmbox-version "nnmbox 1.0"
	50	"nnmbox version.")
	51
	52	(defvoo nnmbox-current-group nil
	53	"Current nnmbox news group directory.")
	54
	55	(defconst nnmbox-mbox-buffer nil)
	56
	57	(defvoo nnmbox-status-string "")
	58
	59	(defvoo nnmbox-group-alist nil)
	60	(defvoo nnmbox-active-timestamp nil)
	61
	62	\f
	63
	64	;;; Interface functions
	65
	66	(nnoo-define-basics nnmbox)
	67
	68	(deffoo nnmbox-retrieve-headers (sequence &optional newsgroup server fetch-old)
	69	(save-excursion
	70	(set-buffer nntp-server-buffer)
	71	(erase-buffer)
	72	(let ((number (length sequence))
	73	(count 0)
	74	article art-string start stop)
	75	(nnmbox-possibly-change-newsgroup newsgroup server)
	76	(while sequence
	77	(setq article (car sequence))
	78	(setq art-string (nnmbox-article-string article))
79	(set-buffer nnmbox-mbox-buffer)
80	(when (or (search-forward art-string nil t)
81	(progn (goto-char (point-min))
82	(search-forward art-string nil t)))
83	(setq start
84	(save-excursion
85	(re-search-backward
86	(concat "^" message-unix-mail-delimiter) nil t)
87	(point)))
88	(search-forward "\n\n" nil t)
89	(setq stop (1- (point)))
90	(set-buffer nntp-server-buffer)
91	(insert (format "221 %d Article retrieved.\n" article))
92	(insert-buffer-substring nnmbox-mbox-buffer start stop)
93	(goto-char (point-max))
94	(insert ".\n"))
95	(setq sequence (cdr sequence))
96	(setq count (1+ count))
97	(and (numberp nnmail-large-newsgroup)
98	(> number nnmail-large-newsgroup)
99	(zerop (% count 20))
100	(nnheader-message 5 "nnmbox: Receiving headers... %d%%"
101	(/ (* count 100) number))))
102
103	(and (numberp nnmail-large-newsgroup)
104	(> number nnmail-large-newsgroup)
105	(nnheader-message 5 "nnmbox: Receiving headers...done"))
106
107	(set-buffer nntp-server-buffer)
108	(nnheader-fold-continuation-lines)
109	'headers)))
110
111	(deffoo nnmbox-open-server (server &optional defs)
112	(nnoo-change-server 'nnmbox server defs)
113	(nnmbox-create-mbox)
114	(cond
115	((not (file-exists-p nnmbox-mbox-file))
116	(nnmbox-close-server)
117	(nnheader-report 'nnmbox "No such file: %s" nnmbox-mbox-file))
118	((file-directory-p nnmbox-mbox-file)
119	(nnmbox-close-server)
120	(nnheader-report 'nnmbox "Not a regular file: %s" nnmbox-mbox-file))
121	(t
122	(nnheader-report 'nnmbox "Opened server %s using mbox %s" server
123	nnmbox-mbox-file)
124	t)))
125
126	(deffoo nnmbox-close-server (&optional server)
127	(when (and nnmbox-mbox-buffer
128	(buffer-name nnmbox-mbox-buffer))
129	(kill-buffer nnmbox-mbox-buffer))
130	(nnoo-close-server 'nnmbox server)
131	t)
132
133	(deffoo nnmbox-server-opened (&optional server)
134	(and (nnoo-current-server-p 'nnmbox server)
135	nnmbox-mbox-buffer
136	(buffer-name nnmbox-mbox-buffer)
137	nntp-server-buffer
138	(buffer-name nntp-server-buffer)))
139
140	(deffoo nnmbox-request-article (article &optional newsgroup server buffer)
141	(nnmbox-possibly-change-newsgroup newsgroup server)
142	(save-excursion
143	(set-buffer nnmbox-mbox-buffer)
144	(goto-char (point-min))
145	(when (search-forward (nnmbox-article-string article) nil t)
146	(let (start stop)
147	(re-search-backward (concat "^" message-unix-mail-delimiter) nil t)
148	(setq start (point))
149	(forward-line 1)
150	(or (and (re-search-forward
151	(concat "^" message-unix-mail-delimiter) nil t)
152	(forward-line -1))
153	(goto-char (point-max)))
154	(setq stop (point))
155	(let ((nntp-server-buffer (or buffer nntp-server-buffer)))
156	(set-buffer nntp-server-buffer)
157	(erase-buffer)
158	(insert-buffer-substring nnmbox-mbox-buffer start stop)
159	(goto-char (point-min))
160	(while (looking-at "From ")
161	(delete-char 5)
162	(insert "X-From-Line: ")
163	(forward-line 1))
164	(if (numberp article)
165	(cons nnmbox-current-group article)
166	(nnmbox-article-group-number)))))))
167
168	(deffoo nnmbox-request-group (group &optional server dont-check)
169	(let ((active (cadr (assoc group nnmbox-group-alist))))
170	(cond
171	((or (null active)
172	(null (nnmbox-possibly-change-newsgroup group server)))
173	(nnheader-report 'nnmbox "No such group: %s" group))
174	(dont-check
175	(nnheader-report 'nnmbox "Selected group %s" group)
176	(nnheader-insert ""))
177	(t
178	(nnheader-report 'nnmbox "Selected group %s" group)
179	(nnheader-insert "211 %d %d %d %s\n"
180	(1+ (- (cdr active) (car active)))
181	(car active) (cdr active) group)))))
182
183	(deffoo nnmbox-request-scan (&optional group server)
184	(nnmbox-possibly-change-newsgroup group server)
185	(nnmbox-read-mbox)
186	(nnmail-get-new-mail
187	'nnmbox
188	(lambda ()
189	(save-excursion
190	(set-buffer nnmbox-mbox-buffer)
191	(save-buffer)))
192	(file-name-directory nnmbox-mbox-file)
193	group
194	(lambda ()
195	(save-excursion
196	(let ((in-buf (current-buffer)))
197	(set-buffer nnmbox-mbox-buffer)
198	(goto-char (point-max))
199	(insert-buffer-substring in-buf)))
200	(nnmail-save-active nnmbox-group-alist nnmbox-active-file))))
201
202	(deffoo nnmbox-close-group (group &optional server)
203	t)
204
6748645f LMI	205	(deffoo nnmbox-request-create-group (group &optional server args)
	206	(nnmail-activate 'nnmbox)
	207	(unless (assoc group nnmbox-group-alist)
	208	(push (list group (cons 1 0))
	209	nnmbox-group-alist)
	210	(nnmail-save-active nnmbox-group-alist nnmbox-active-file))
	211	t)
	212
eec82323 LMI	213	(deffoo nnmbox-request-list (&optional server)
	214	(save-excursion
	215	(nnmail-find-file nnmbox-active-file)
	216	(setq nnmbox-group-alist (nnmail-get-active))
	217	t))
	218
	219	(deffoo nnmbox-request-newgroups (date &optional server)
	220	(nnmbox-request-list server))
	221
	222	(deffoo nnmbox-request-list-newsgroups (&optional server)
	223	(nnheader-report 'nnmbox "LIST NEWSGROUPS is not implemented."))
	224
	225	(deffoo nnmbox-request-expire-articles
	226	(articles newsgroup &optional server force)
	227	(nnmbox-possibly-change-newsgroup newsgroup server)
	228	(let* ((is-old t)
	229	rest)
	230	(nnmail-activate 'nnmbox)
	231
	232	(save-excursion
	233	(set-buffer nnmbox-mbox-buffer)
	234	(while (and articles is-old)
	235	(goto-char (point-min))
	236	(when (search-forward (nnmbox-article-string (car articles)) nil t)
	237	(if (setq is-old
	238	(nnmail-expired-article-p
	239	newsgroup
	240	(buffer-substring
	241	(point) (progn (end-of-line) (point))) force))
	242	(progn
	243	(nnheader-message 5 "Deleting article %d in %s..."
	244	(car articles) newsgroup)
	245	(nnmbox-delete-mail))
	246	(push (car articles) rest)))
	247	(setq articles (cdr articles)))
	248	(save-buffer)
	249	;; Find the lowest active article in this group.
	250	(let ((active (nth 1 (assoc newsgroup nnmbox-group-alist))))
	251	(goto-char (point-min))
	252	(while (and (not (search-forward
	253	(nnmbox-article-string (car active)) nil t))
	254	(<= (car active) (cdr active)))
	255	(setcar active (1+ (car active)))
	256	(goto-char (point-min))))
	257	(nnmail-save-active nnmbox-group-alist nnmbox-active-file)
	258	(nconc rest articles))))
	259
	260	(deffoo nnmbox-request-move-article
	261	(article group server accept-form &optional last)
	262	(let ((buf (get-buffer-create " nnmbox move"))
	263	result)
	264	(and
	265	(nnmbox-request-article article group server)
	266	(save-excursion
	267	(set-buffer buf)
	268	(buffer-disable-undo (current-buffer))
	269	(erase-buffer)
	270	(insert-buffer-substring nntp-server-buffer)
	271	(goto-char (point-min))
	272	(while (re-search-forward
	273	"^X-Gnus-Newsgroup:"
	274	(save-excursion (search-forward "\n\n" nil t) (point)) t)
	275	(delete-region (progn (beginning-of-line) (point))
	276	(progn (forward-line 1) (point))))
277	(setq result (eval accept-form))
278	(kill-buffer buf)
279	result)
280	(save-excursion
281	(nnmbox-possibly-change-newsgroup group server)
282	(set-buffer nnmbox-mbox-buffer)
283	(goto-char (point-min))
284	(when (search-forward (nnmbox-article-string article) nil t)
285	(nnmbox-delete-mail))
286	(and last (save-buffer))))
287	result))
288
289	(deffoo nnmbox-request-accept-article (group &optional server last)
290	(nnmbox-possibly-change-newsgroup group server)
291	(nnmail-check-syntax)
292	(let ((buf (current-buffer))
293	result)
294	(goto-char (point-min))
295	;; The From line may have been quoted by movemail.
296	(when (looking-at (concat ">" message-unix-mail-delimiter))
297	(delete-char 1))
298	(if (looking-at "X-From-Line: ")
299	(replace-match "From ")
300	(insert "From nobody " (current-time-string) "\n"))
301	(and
302	(nnmail-activate 'nnmbox)
303	(progn
304	(set-buffer buf)
305	(goto-char (point-min))
306	(search-forward "\n\n" nil t)
307	(forward-line -1)
308	(while (re-search-backward "^X-Gnus-Newsgroup: " nil t)
309	(delete-region (point) (progn (forward-line 1) (point))))
310	(when nnmail-cache-accepted-message-ids
311	(nnmail-cache-insert (nnmail-fetch-field "message-id")))
312	(setq result (if (stringp group)
313	(list (cons group (nnmbox-active-number group)))
314	(nnmail-article-group 'nnmbox-active-number)))
315	(if (and (null result)
316	(yes-or-no-p "Moved to `junk' group; delete article? "))
317	(setq result 'junk)
318	(setq result (car (nnmbox-save-mail result)))))
319	(save-excursion
320	(set-buffer nnmbox-mbox-buffer)
321	(goto-char (point-max))
322	(insert-buffer-substring buf)
323	(when last
324	(when nnmail-cache-accepted-message-ids
325	(nnmail-cache-close))
326	(nnmail-save-active nnmbox-group-alist nnmbox-active-file)
327	(save-buffer))))
328	result))
329
330	(deffoo nnmbox-request-replace-article (article group buffer)
331	(nnmbox-possibly-change-newsgroup group)
332	(save-excursion
333	(set-buffer nnmbox-mbox-buffer)
334	(goto-char (point-min))
335	(if (not (search-forward (nnmbox-article-string article) nil t))
336	nil
337	(nnmbox-delete-mail t t)
338	(insert-buffer-substring buffer)
339	(save-buffer)
340	t)))
341
342	(deffoo nnmbox-request-delete-group (group &optional force server)
343	(nnmbox-possibly-change-newsgroup group server)
344	;; Delete all articles in GROUP.
345	(if (not force)
346	() ; Don't delete the articles.
347	(save-excursion
348	(set-buffer nnmbox-mbox-buffer)
349	(goto-char (point-min))
350	;; Delete all articles in this group.
351	(let ((ident (concat "\nX-Gnus-Newsgroup: " nnmbox-current-group ":"))
352	found)
353	(while (search-forward ident nil t)
354	(setq found t)
355	(nnmbox-delete-mail))
356	(when found
357	(save-buffer)))))
358	;; Remove the group from all structures.
359	(setq nnmbox-group-alist
360	(delq (assoc group nnmbox-group-alist) nnmbox-group-alist)
361	nnmbox-current-group nil)
362	;; Save the active file.
363	(nnmail-save-active nnmbox-group-alist nnmbox-active-file)
364	t)
365
366	(deffoo nnmbox-request-rename-group (group new-name &optional server)
367	(nnmbox-possibly-change-newsgroup group server)
368	(save-excursion
369	(set-buffer nnmbox-mbox-buffer)
370	(goto-char (point-min))
371	(let ((ident (concat "\nX-Gnus-Newsgroup: " nnmbox-current-group ":"))
372	(new-ident (concat "\nX-Gnus-Newsgroup: " new-name ":"))
373	found)
374	(while (search-forward ident nil t)
375	(replace-match new-ident t t)
376	(setq found t))
377	(when found
378	(save-buffer))))
379	(let ((entry (assoc group nnmbox-group-alist)))
380	(when entry
381	(setcar entry new-name))
382	(setq nnmbox-current-group nil)
383	;; Save the new group alist.
384	(nnmail-save-active nnmbox-group-alist nnmbox-active-file)
385	t))
386
387	\f
388	;;; Internal functions.
389
390	;; If FORCE, delete article no matter how many X-Gnus-Newsgroup
391	;; headers there are. If LEAVE-DELIM, don't delete the Unix mbox
392	;; delimiter line.
393	(defun nnmbox-delete-mail (&optional force leave-delim)
394	;; Delete the current X-Gnus-Newsgroup line.
395	(or force
396	(delete-region
397	(progn (beginning-of-line) (point))
398	(progn (forward-line 1) (point))))
399	;; Beginning of the article.
400	(save-excursion
401	(save-restriction
402	(narrow-to-region
403	(save-excursion
404	(re-search-backward (concat "^" message-unix-mail-delimiter) nil t)
405	(if leave-delim (progn (forward-line 1) (point))
406	(match-beginning 0)))
407	(progn
408	(forward-line 1)
409	(or (and (re-search-forward (concat "^" message-unix-mail-delimiter)
410	nil t)
411	(if (and (not (bobp)) leave-delim)
412	(progn (forward-line -2) (point))
413	(match-beginning 0)))
414	(point-max))))
415	(goto-char (point-min))
416	;; Only delete the article if no other groups owns it as well.
417	(when (or force (not (re-search-forward "^X-Gnus-Newsgroup: " nil t)))
418	(delete-region (point-min) (point-max))))))
419
420	(defun nnmbox-possibly-change-newsgroup (newsgroup &optional server)
421	(when (and server
422	(not (nnmbox-server-opened server)))
423	(nnmbox-open-server server))
424	(when (or (not nnmbox-mbox-buffer)
425	(not (buffer-name nnmbox-mbox-buffer)))
426	(save-excursion
427	(set-buffer (setq nnmbox-mbox-buffer
428	(nnheader-find-file-noselect
429	nnmbox-mbox-file nil 'raw)))
430	(buffer-disable-undo (current-buffer))))
431	(when (not nnmbox-group-alist)
432	(nnmail-activate 'nnmbox))
433	(if newsgroup
434	(when (assoc newsgroup nnmbox-group-alist)
435	(setq nnmbox-current-group newsgroup))
436	t))
437
438	(defun nnmbox-article-string (article)
439	(if (numberp article)
440	(concat "\nX-Gnus-Newsgroup: " nnmbox-current-group ":"
441	(int-to-string article) " ")
442	(concat "\nMessage-ID: " article)))
443
444	(defun nnmbox-article-group-number ()
445	(save-excursion
446	(goto-char (point-min))
447	(when (re-search-forward "^X-Gnus-Newsgroup: +\\([^:]+\\):\\([0-9]+\\) "
448	nil t)
449	(cons (buffer-substring (match-beginning 1) (match-end 1))
450	(string-to-int
451	(buffer-substring (match-beginning 2) (match-end 2)))))))
452
453	(defun nnmbox-save-mail (group-art)
454	"Called narrowed to an article."
455	(let ((delim (concat "^" message-unix-mail-delimiter)))
456	(goto-char (point-min))
457	;; This might come from somewhere else.
458	(unless (looking-at delim)
459	(insert "From nobody " (current-time-string) "\n")
460	(goto-char (point-min)))
461	;; Quote all "From " lines in the article.
462	(forward-line 1)
463	(while (re-search-forward delim nil t)
464	(beginning-of-line)
465	(insert "> "))
466	(nnmail-insert-lines)
467	(nnmail-insert-xref group-art)
468	(nnmbox-insert-newsgroup-line group-art)
469	(run-hooks 'nnmail-prepare-save-mail-hook)
470	(run-hooks 'nnmbox-prepare-save-mail-hook)
471	group-art))
472
473	(defun nnmbox-insert-newsgroup-line (group-art)
474	(save-excursion
475	(goto-char (point-min))
476	(when (search-forward "\n\n" nil t)
477	(forward-char -1)
478	(while group-art
479	(insert (format "X-Gnus-Newsgroup: %s:%d %s\n"
480	(caar group-art) (cdar group-art)
481	(current-time-string)))
482	(setq group-art (cdr group-art))))
483	t))
484
485	(defun nnmbox-active-number (group)
486	;; Find the next article number in GROUP.
487	(let ((active (cadr (assoc group nnmbox-group-alist))))
488	(if active
489	(setcdr active (1+ (cdr active)))
490	;; This group is new, so we create a new entry for it.
491	;; This might be a bit naughty... creating groups on the drop of
492	;; a hat, but I don't know...
493	(push (list group (setq active (cons 1 1)))
494	nnmbox-group-alist))
495	(cdr active)))
496
497	(defun nnmbox-create-mbox ()
498	(when (not (file-exists-p nnmbox-mbox-file))
499	(nnmail-write-region 1 1 nnmbox-mbox-file t 'nomesg)))
500
501	(defun nnmbox-read-mbox ()
502	(nnmail-activate 'nnmbox)
503	(nnmbox-create-mbox)
504	(if (and nnmbox-mbox-buffer
505	(buffer-name nnmbox-mbox-buffer)
506	(save-excursion
507	(set-buffer nnmbox-mbox-buffer)
508	(= (buffer-size) (nnheader-file-size nnmbox-mbox-file))))
509	()
510	(save-excursion
511	(let ((delim (concat "^" message-unix-mail-delimiter))
512	(alist nnmbox-group-alist)
513	start end number)
514	(set-buffer (setq nnmbox-mbox-buffer
515	(nnheader-find-file-noselect
516	nnmbox-mbox-file nil 'raw)))
517	(buffer-disable-undo (current-buffer))
518
519	;; Go through the group alist and compare against
520	;; the mbox file.
521	(while alist
522	(goto-char (point-max))
523	(when (and (re-search-backward
524	(format "^X-Gnus-Newsgroup: %s:\\([0-9]+\\) "
525	(caar alist)) nil t)
526	(>= (setq number
527	(string-to-number
528	(buffer-substring
529	(match-beginning 1) (match-end 1))))
530	(cdadar alist)))
531	(setcdr (cadar alist) (1+ number)))
532	(setq alist (cdr alist)))
533
534	(goto-char (point-min))
535	(while (re-search-forward delim nil t)
536	(setq start (match-beginning 0))
537	(when (not (search-forward "\nX-Gnus-Newsgroup: "
538	(save-excursion
539	(setq end
540	(or
541	(and
542	(re-search-forward delim nil t)
543	(match-beginning 0))
544	(point-max))))
545	t))
546	(save-excursion
547	(save-restriction
548	(narrow-to-region start end)
549	(nnmbox-save-mail
550	(nnmail-article-group 'nnmbox-active-number)))))
551	(goto-char end))))))
552
553	(provide 'nnmbox)
554
555	;;; nnmbox.el ends here