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

;;; nnmbox.el --- mail mbox access for Gnus

;; Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000
;;	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)

(defvoo nnmbox-file-coding-system mm-binary-coding-system)
(defvoo nnmbox-file-coding-system-for-write nil)
(defvoo nnmbox-active-file-coding-system mm-binary-coding-system)
(defvoo nnmbox-active-file-coding-system-for-write 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)
  (nnmbox-possibly-change-newsgroup nil server)
  (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)))))

(defun nnmbox-save-buffer ()
  (let ((coding-system-for-write
	 (or nnmbox-file-coding-system-for-write
	     nnmbox-file-coding-system)))
    (save-buffer)))

(defun nnmbox-save-active (group-alist active-file)
  (let ((nnmail-active-file-coding-system
	 (or nnmbox-active-file-coding-system-for-write
	     nnmbox-active-file-coding-system)))
    (nnmail-save-active group-alist active-file)))

(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)
       (nnmbox-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)))
     (nnmbox-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)
    (nnmbox-save-active nnmbox-group-alist nnmbox-active-file))
  t)

(deffoo nnmbox-request-list (&optional server)
  (save-excursion
    (let ((nnmail-file-coding-system
	   nnmbox-active-file-coding-system))
      (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
		(unless (eq nnmail-expiry-target 'delete)
		  (with-temp-buffer
		    (nnmbox-request-article (car articles)
					     newsgroup server
					     (current-buffer))
		    (let ((nnml-current-directory nil))
		      (nnmail-expiry-target-group
		       nnmail-expiry-target newsgroup))))
		(nnheader-message 5 "Deleting article %d in %s..."
				  (car articles) newsgroup)
		(nnmbox-delete-mail))
	    (push (car articles) rest)))
	(setq articles (cdr articles)))
      (nnmbox-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))))
      (nnmbox-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)
       (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 (nnmbox-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))
	 (nnmbox-save-active nnmbox-group-alist nnmbox-active-file)
	 (nnmbox-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)
      (nnmbox-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
	  (nnmbox-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.
  (nnmbox-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
	(nnmbox-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.
    (nnmbox-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
			(let ((nnheader-file-coding-system
			       nnmbox-file-coding-system))
			  (nnheader-find-file-noselect
			   nnmbox-mbox-file nil t))))
      (mm-enable-multibyte)
      (buffer-disable-undo)))
  (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))
    (let ((nnmail-file-coding-system
	   (or nnmbox-file-coding-system-for-write
	       nnmbox-file-coding-system)))
      (nnmail-write-region (point-min) (point-min)
			   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
			  (let ((nnheader-file-coding-system
				 nnmbox-file-coding-system))
			    (nnheader-find-file-noselect
			     nnmbox-mbox-file nil t))))
	(mm-enable-multibyte)
	(buffer-disable-undo)

	;; 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) number))
	  (setq alist (cdr alist)))

	(goto-char (point-min))
	(while (re-search-forward delim nil t)
	  (setq start (match-beginning 0))
	  (unless (search-forward
		   "\nX-Gnus-Newsgroup: "
		   (save-excursion
		     (setq end
			   (or
			    (and
			     ;; skip to end of headers first, since mail
			     ;; which has been respooled has additional
			     ;; "From nobody" lines.
			     (search-forward "\n\n" nil t)
			     (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)

;;; arch-tag: 611dd95f-be37-413a-b3ae-8b059ba93659
;;; nnmbox.el ends here
Commit	Line	Data
eec82323	1	;;; nnmbox.el --- mail mbox access for Gnus
16409b0b GM	2
	3	;; Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000
	4	;; Free Software Foundation, Inc.
eec82323	5
6748645f	6	;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
eec82323 LMI	7	;; Masanobu UMEDA <umerin@flab.flab.fujitsu.junet>
	8	;; Keywords: news, mail
	9
	10	;; This file is part of GNU Emacs.
	11
	12	;; GNU Emacs is free software; you can redistribute it and/or modify
	13	;; it under the terms of the GNU General Public License as published by
	14	;; the Free Software Foundation; either version 2, or (at your option)
	15	;; any later version.
	16
eec82323 LMI	17	;; You should have received a copy of the GNU General Public License
	18	;; along with GNU Emacs; see the file COPYING. If not, write to the
	19	;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
	20	;; Boston, MA 02111-1307, USA.
	21
	22	;;; Commentary:
	23
	24	;; For an overview of what the interface functions do, please see the
	25	;; Gnus sources.
	26
	27	;;; Code:
	28
	29	(require 'nnheader)
	30	(require 'message)
	31	(require 'nnmail)
	32	(require 'nnoo)
	33	(eval-when-compile (require 'cl))
	34
	35	(nnoo-declare nnmbox)
	36
	37	(defvoo nnmbox-mbox-file (expand-file-name "~/mbox")
	38	"The name of the mail box file in the user's home directory.")
	39
	40	(defvoo nnmbox-active-file (expand-file-name "~/.mbox-active")
	41	"The name of the active file for the mail box.")
	42
	43	(defvoo nnmbox-get-new-mail t
	44	"If non-nil, nnmbox will check the incoming mail file and split the mail.")
	45
	46	(defvoo nnmbox-prepare-save-mail-hook nil
	47	"Hook run narrowed to an article before saving.")
	48
	49	\f
	50
	51	(defconst nnmbox-version "nnmbox 1.0"
	52	"nnmbox version.")
	53
	54	(defvoo nnmbox-current-group nil
	55	"Current nnmbox news group directory.")
	56
	57	(defconst nnmbox-mbox-buffer nil)
	58
	59	(defvoo nnmbox-status-string "")
	60
	61	(defvoo nnmbox-group-alist nil)
	62	(defvoo nnmbox-active-timestamp nil)
	63
158d6e07	64	(defvoo nnmbox-file-coding-system mm-binary-coding-system)
16409b0b	65	(defvoo nnmbox-file-coding-system-for-write nil)
158d6e07	66	(defvoo nnmbox-active-file-coding-system mm-binary-coding-system)
16409b0b GM	67	(defvoo nnmbox-active-file-coding-system-for-write nil)
16409b0b GM	68
eec82323 LMI	69	\f
	70
	71	;;; Interface functions
	72
	73	(nnoo-define-basics nnmbox)
	74
	75	(deffoo nnmbox-retrieve-headers (sequence &optional newsgroup server fetch-old)
	76	(save-excursion
	77	(set-buffer nntp-server-buffer)
	78	(erase-buffer)
	79	(let ((number (length sequence))
	80	(count 0)
	81	article art-string start stop)
	82	(nnmbox-possibly-change-newsgroup newsgroup server)
	83	(while sequence
	84	(setq article (car sequence))
	85	(setq art-string (nnmbox-article-string article))
	86	(set-buffer nnmbox-mbox-buffer)
	87	(when (or (search-forward art-string nil t)
	88	(progn (goto-char (point-min))
	89	(search-forward art-string nil t)))
	90	(setq start
	91	(save-excursion
	92	(re-search-backward
	93	(concat "^" message-unix-mail-delimiter) nil t)
	94	(point)))
	95	(search-forward "\n\n" nil t)
	96	(setq stop (1- (point)))
	97	(set-buffer nntp-server-buffer)
	98	(insert (format "221 %d Article retrieved.\n" article))
	99	(insert-buffer-substring nnmbox-mbox-buffer start stop)
	100	(goto-char (point-max))
	101	(insert ".\n"))
	102	(setq sequence (cdr sequence))
	103	(setq count (1+ count))
	104	(and (numberp nnmail-large-newsgroup)
	105	(> number nnmail-large-newsgroup)
	106	(zerop (% count 20))
	107	(nnheader-message 5 "nnmbox: Receiving headers... %d%%"
	108	(/ (* count 100) number))))
	109
	110	(and (numberp nnmail-large-newsgroup)
	111	(> number nnmail-large-newsgroup)
	112	(nnheader-message 5 "nnmbox: Receiving headers...done"))
	113
	114	(set-buffer nntp-server-buffer)
	115	(nnheader-fold-continuation-lines)
	116	'headers)))
	117
	118	(deffoo nnmbox-open-server (server &optional defs)
	119	(nnoo-change-server 'nnmbox server defs)
	120	(nnmbox-create-mbox)
	121	(cond
	122	((not (file-exists-p nnmbox-mbox-file))
	123	(nnmbox-close-server)
	124	(nnheader-report 'nnmbox "No such file: %s" nnmbox-mbox-file))
	125	((file-directory-p nnmbox-mbox-file)
	126	(nnmbox-close-server)
	127	(nnheader-report 'nnmbox "Not a regular file: %s" nnmbox-mbox-file))
	128	(t
	129	(nnheader-report 'nnmbox "Opened server %s using mbox %s" server
	130	nnmbox-mbox-file)
	131	t)))
	132
133	(deffoo nnmbox-close-server (&optional server)
134	(when (and nnmbox-mbox-buffer
135	(buffer-name nnmbox-mbox-buffer))
136	(kill-buffer nnmbox-mbox-buffer))
137	(nnoo-close-server 'nnmbox server)
138	t)
139
140	(deffoo nnmbox-server-opened (&optional server)
141	(and (nnoo-current-server-p 'nnmbox server)
142	nnmbox-mbox-buffer
143	(buffer-name nnmbox-mbox-buffer)
144	nntp-server-buffer
145	(buffer-name nntp-server-buffer)))
146
147	(deffoo nnmbox-request-article (article &optional newsgroup server buffer)
148	(nnmbox-possibly-change-newsgroup newsgroup server)
149	(save-excursion
150	(set-buffer nnmbox-mbox-buffer)
151	(goto-char (point-min))
152	(when (search-forward (nnmbox-article-string article) nil t)
153	(let (start stop)
154	(re-search-backward (concat "^" message-unix-mail-delimiter) nil t)
155	(setq start (point))
156	(forward-line 1)
157	(or (and (re-search-forward
158	(concat "^" message-unix-mail-delimiter) nil t)
159	(forward-line -1))
160	(goto-char (point-max)))
161	(setq stop (point))
162	(let ((nntp-server-buffer (or buffer nntp-server-buffer)))
163	(set-buffer nntp-server-buffer)
164	(erase-buffer)
165	(insert-buffer-substring nnmbox-mbox-buffer start stop)
166	(goto-char (point-min))
167	(while (looking-at "From ")
168	(delete-char 5)
169	(insert "X-From-Line: ")
170	(forward-line 1))
171	(if (numberp article)
172	(cons nnmbox-current-group article)
173	(nnmbox-article-group-number)))))))
174
175	(deffoo nnmbox-request-group (group &optional server dont-check)
16409b0b	176	(nnmbox-possibly-change-newsgroup nil server)
eec82323 LMI	177	(let ((active (cadr (assoc group nnmbox-group-alist))))
	178	(cond
	179	((or (null active)
	180	(null (nnmbox-possibly-change-newsgroup group server)))
	181	(nnheader-report 'nnmbox "No such group: %s" group))
	182	(dont-check
	183	(nnheader-report 'nnmbox "Selected group %s" group)
	184	(nnheader-insert ""))
	185	(t
	186	(nnheader-report 'nnmbox "Selected group %s" group)
	187	(nnheader-insert "211 %d %d %d %s\n"
	188	(1+ (- (cdr active) (car active)))
	189	(car active) (cdr active) group)))))
	190
16409b0b	191	(defun nnmbox-save-buffer ()
a1506d29	192	(let ((coding-system-for-write
16409b0b GM	193	(or nnmbox-file-coding-system-for-write
	194	nnmbox-file-coding-system)))
	195	(save-buffer)))
	196
	197	(defun nnmbox-save-active (group-alist active-file)
	198	(let ((nnmail-active-file-coding-system
	199	(or nnmbox-active-file-coding-system-for-write
	200	nnmbox-active-file-coding-system)))
	201	(nnmail-save-active group-alist active-file)))
	202
eec82323 LMI	203	(deffoo nnmbox-request-scan (&optional group server)
	204	(nnmbox-possibly-change-newsgroup group server)
	205	(nnmbox-read-mbox)
	206	(nnmail-get-new-mail
	207	'nnmbox
	208	(lambda ()
	209	(save-excursion
	210	(set-buffer nnmbox-mbox-buffer)
16409b0b	211	(nnmbox-save-buffer)))
eec82323 LMI	212	(file-name-directory nnmbox-mbox-file)
	213	group
	214	(lambda ()
	215	(save-excursion
	216	(let ((in-buf (current-buffer)))
	217	(set-buffer nnmbox-mbox-buffer)
	218	(goto-char (point-max))
	219	(insert-buffer-substring in-buf)))
16409b0b	220	(nnmbox-save-active nnmbox-group-alist nnmbox-active-file))))
eec82323 LMI	221
	222	(deffoo nnmbox-close-group (group &optional server)
	223	t)
	224
6748645f LMI	225	(deffoo nnmbox-request-create-group (group &optional server args)
	226	(nnmail-activate 'nnmbox)
	227	(unless (assoc group nnmbox-group-alist)
	228	(push (list group (cons 1 0))
	229	nnmbox-group-alist)
16409b0b	230	(nnmbox-save-active nnmbox-group-alist nnmbox-active-file))
6748645f LMI	231	t)
6748645f LMI	232
eec82323 LMI	233	(deffoo nnmbox-request-list (&optional server)
eec82323 LMI	234	(save-excursion
16409b0b GM	235	(let ((nnmail-file-coding-system
	236	nnmbox-active-file-coding-system))
	237	(nnmail-find-file nnmbox-active-file))
eec82323 LMI	238	(setq nnmbox-group-alist (nnmail-get-active))
	239	t))
	240
	241	(deffoo nnmbox-request-newgroups (date &optional server)
	242	(nnmbox-request-list server))
	243
	244	(deffoo nnmbox-request-list-newsgroups (&optional server)
	245	(nnheader-report 'nnmbox "LIST NEWSGROUPS is not implemented."))
	246
	247	(deffoo nnmbox-request-expire-articles
16409b0b	248	(articles newsgroup &optional server force)
eec82323 LMI	249	(nnmbox-possibly-change-newsgroup newsgroup server)
	250	(let* ((is-old t)
	251	rest)
	252	(nnmail-activate 'nnmbox)
	253
	254	(save-excursion
	255	(set-buffer nnmbox-mbox-buffer)
	256	(while (and articles is-old)
	257	(goto-char (point-min))
	258	(when (search-forward (nnmbox-article-string (car articles)) nil t)
	259	(if (setq is-old
	260	(nnmail-expired-article-p
	261	newsgroup
	262	(buffer-substring
	263	(point) (progn (end-of-line) (point))) force))
	264	(progn
0d972486 SZ	265	(unless (eq nnmail-expiry-target 'delete)
0d972486 SZ	266	(with-temp-buffer
a1506d29 JB	267	(nnmbox-request-article (car articles)
a1506d29 JB	268	newsgroup server
0d972486 SZ	269	(current-buffer))
	270	(let ((nnml-current-directory nil))
	271	(nnmail-expiry-target-group
	272	nnmail-expiry-target newsgroup))))
eec82323 LMI	273	(nnheader-message 5 "Deleting article %d in %s..."
	274	(car articles) newsgroup)
	275	(nnmbox-delete-mail))
	276	(push (car articles) rest)))
	277	(setq articles (cdr articles)))
16409b0b	278	(nnmbox-save-buffer)
eec82323 LMI	279	;; Find the lowest active article in this group.
	280	(let ((active (nth 1 (assoc newsgroup nnmbox-group-alist))))
	281	(goto-char (point-min))
	282	(while (and (not (search-forward
	283	(nnmbox-article-string (car active)) nil t))
	284	(<= (car active) (cdr active)))
	285	(setcar active (1+ (car active)))
	286	(goto-char (point-min))))
16409b0b	287	(nnmbox-save-active nnmbox-group-alist nnmbox-active-file)
eec82323 LMI	288	(nconc rest articles))))
	289
	290	(deffoo nnmbox-request-move-article
16409b0b	291	(article group server accept-form &optional last)
eec82323 LMI	292	(let ((buf (get-buffer-create " nnmbox move"))
	293	result)
	294	(and
	295	(nnmbox-request-article article group server)
	296	(save-excursion
	297	(set-buffer buf)
eec82323 LMI	298	(erase-buffer)
	299	(insert-buffer-substring nntp-server-buffer)
	300	(goto-char (point-min))
	301	(while (re-search-forward
	302	"^X-Gnus-Newsgroup:"
	303	(save-excursion (search-forward "\n\n" nil t) (point)) t)
	304	(delete-region (progn (beginning-of-line) (point))
	305	(progn (forward-line 1) (point))))
	306	(setq result (eval accept-form))
	307	(kill-buffer buf)
	308	result)
	309	(save-excursion
	310	(nnmbox-possibly-change-newsgroup group server)
	311	(set-buffer nnmbox-mbox-buffer)
	312	(goto-char (point-min))
	313	(when (search-forward (nnmbox-article-string article) nil t)
	314	(nnmbox-delete-mail))
16409b0b	315	(and last (nnmbox-save-buffer))))
eec82323 LMI	316	result))
	317
	318	(deffoo nnmbox-request-accept-article (group &optional server last)
	319	(nnmbox-possibly-change-newsgroup group server)
	320	(nnmail-check-syntax)
	321	(let ((buf (current-buffer))
	322	result)
	323	(goto-char (point-min))
	324	;; The From line may have been quoted by movemail.
	325	(when (looking-at (concat ">" message-unix-mail-delimiter))
	326	(delete-char 1))
	327	(if (looking-at "X-From-Line: ")
	328	(replace-match "From ")
	329	(insert "From nobody " (current-time-string) "\n"))
	330	(and
	331	(nnmail-activate 'nnmbox)
	332	(progn
	333	(set-buffer buf)
	334	(goto-char (point-min))
	335	(search-forward "\n\n" nil t)
	336	(forward-line -1)
	337	(while (re-search-backward "^X-Gnus-Newsgroup: " nil t)
	338	(delete-region (point) (progn (forward-line 1) (point))))
	339	(when nnmail-cache-accepted-message-ids
	340	(nnmail-cache-insert (nnmail-fetch-field "message-id")))
	341	(setq result (if (stringp group)
	342	(list (cons group (nnmbox-active-number group)))
	343	(nnmail-article-group 'nnmbox-active-number)))
	344	(if (and (null result)
	345	(yes-or-no-p "Moved to `junk' group; delete article? "))
	346	(setq result 'junk)
	347	(setq result (car (nnmbox-save-mail result)))))
	348	(save-excursion
	349	(set-buffer nnmbox-mbox-buffer)
	350	(goto-char (point-max))
	351	(insert-buffer-substring buf)
	352	(when last
	353	(when nnmail-cache-accepted-message-ids
	354	(nnmail-cache-close))
16409b0b GM	355	(nnmbox-save-active nnmbox-group-alist nnmbox-active-file)
16409b0b GM	356	(nnmbox-save-buffer))))
eec82323 LMI	357	result))
	358
	359	(deffoo nnmbox-request-replace-article (article group buffer)
	360	(nnmbox-possibly-change-newsgroup group)
	361	(save-excursion
	362	(set-buffer nnmbox-mbox-buffer)
	363	(goto-char (point-min))
	364	(if (not (search-forward (nnmbox-article-string article) nil t))
	365	nil
	366	(nnmbox-delete-mail t t)
	367	(insert-buffer-substring buffer)
16409b0b	368	(nnmbox-save-buffer)
eec82323 LMI	369	t)))
	370
	371	(deffoo nnmbox-request-delete-group (group &optional force server)
	372	(nnmbox-possibly-change-newsgroup group server)
	373	;; Delete all articles in GROUP.
	374	(if (not force)
	375	() ; Don't delete the articles.
	376	(save-excursion
	377	(set-buffer nnmbox-mbox-buffer)
	378	(goto-char (point-min))
	379	;; Delete all articles in this group.
	380	(let ((ident (concat "\nX-Gnus-Newsgroup: " nnmbox-current-group ":"))
	381	found)
	382	(while (search-forward ident nil t)
	383	(setq found t)
	384	(nnmbox-delete-mail))
	385	(when found
16409b0b	386	(nnmbox-save-buffer)))))
eec82323 LMI	387	;; Remove the group from all structures.
	388	(setq nnmbox-group-alist
	389	(delq (assoc group nnmbox-group-alist) nnmbox-group-alist)
	390	nnmbox-current-group nil)
	391	;; Save the active file.
16409b0b	392	(nnmbox-save-active nnmbox-group-alist nnmbox-active-file)
eec82323 LMI	393	t)
	394
	395	(deffoo nnmbox-request-rename-group (group new-name &optional server)
	396	(nnmbox-possibly-change-newsgroup group server)
	397	(save-excursion
	398	(set-buffer nnmbox-mbox-buffer)
	399	(goto-char (point-min))
	400	(let ((ident (concat "\nX-Gnus-Newsgroup: " nnmbox-current-group ":"))
	401	(new-ident (concat "\nX-Gnus-Newsgroup: " new-name ":"))
	402	found)
	403	(while (search-forward ident nil t)
	404	(replace-match new-ident t t)
	405	(setq found t))
	406	(when found
16409b0b	407	(nnmbox-save-buffer))))
eec82323 LMI	408	(let ((entry (assoc group nnmbox-group-alist)))
	409	(when entry
	410	(setcar entry new-name))
	411	(setq nnmbox-current-group nil)
	412	;; Save the new group alist.
16409b0b	413	(nnmbox-save-active nnmbox-group-alist nnmbox-active-file)
eec82323 LMI	414	t))
	415
	416	\f
	417	;;; Internal functions.
	418
	419	;; If FORCE, delete article no matter how many X-Gnus-Newsgroup
	420	;; headers there are. If LEAVE-DELIM, don't delete the Unix mbox
	421	;; delimiter line.
	422	(defun nnmbox-delete-mail (&optional force leave-delim)
	423	;; Delete the current X-Gnus-Newsgroup line.
	424	(or force
	425	(delete-region
	426	(progn (beginning-of-line) (point))
	427	(progn (forward-line 1) (point))))
	428	;; Beginning of the article.
	429	(save-excursion
	430	(save-restriction
	431	(narrow-to-region
	432	(save-excursion
	433	(re-search-backward (concat "^" message-unix-mail-delimiter) nil t)
	434	(if leave-delim (progn (forward-line 1) (point))
	435	(match-beginning 0)))
	436	(progn
	437	(forward-line 1)
	438	(or (and (re-search-forward (concat "^" message-unix-mail-delimiter)
	439	nil t)
	440	(if (and (not (bobp)) leave-delim)
	441	(progn (forward-line -2) (point))
	442	(match-beginning 0)))
	443	(point-max))))
	444	(goto-char (point-min))
	445	;; Only delete the article if no other groups owns it as well.
	446	(when (or force (not (re-search-forward "^X-Gnus-Newsgroup: " nil t)))
	447	(delete-region (point-min) (point-max))))))
	448
	449	(defun nnmbox-possibly-change-newsgroup (newsgroup &optional server)
	450	(when (and server
	451	(not (nnmbox-server-opened server)))
	452	(nnmbox-open-server server))
	453	(when (or (not nnmbox-mbox-buffer)
	454	(not (buffer-name nnmbox-mbox-buffer)))
	455	(save-excursion
	456	(set-buffer (setq nnmbox-mbox-buffer
16409b0b GM	457	(let ((nnheader-file-coding-system
	458	nnmbox-file-coding-system))
	459	(nnheader-find-file-noselect
	460	nnmbox-mbox-file nil t))))
	461	(mm-enable-multibyte)
	462	(buffer-disable-undo)))
eec82323 LMI	463	(when (not nnmbox-group-alist)
	464	(nnmail-activate 'nnmbox))
	465	(if newsgroup
	466	(when (assoc newsgroup nnmbox-group-alist)
	467	(setq nnmbox-current-group newsgroup))
	468	t))
	469
	470	(defun nnmbox-article-string (article)
	471	(if (numberp article)
	472	(concat "\nX-Gnus-Newsgroup: " nnmbox-current-group ":"
	473	(int-to-string article) " ")
	474	(concat "\nMessage-ID: " article)))
	475
	476	(defun nnmbox-article-group-number ()
	477	(save-excursion
	478	(goto-char (point-min))
	479	(when (re-search-forward "^X-Gnus-Newsgroup: +\\([^:]+\\):\\([0-9]+\\) "
	480	nil t)
	481	(cons (buffer-substring (match-beginning 1) (match-end 1))
	482	(string-to-int
	483	(buffer-substring (match-beginning 2) (match-end 2)))))))
	484
	485	(defun nnmbox-save-mail (group-art)
	486	"Called narrowed to an article."
	487	(let ((delim (concat "^" message-unix-mail-delimiter)))
	488	(goto-char (point-min))
	489	;; This might come from somewhere else.
	490	(unless (looking-at delim)
	491	(insert "From nobody " (current-time-string) "\n")
	492	(goto-char (point-min)))
	493	;; Quote all "From " lines in the article.
	494	(forward-line 1)
	495	(while (re-search-forward delim nil t)
	496	(beginning-of-line)
	497	(insert "> "))
	498	(nnmail-insert-lines)
	499	(nnmail-insert-xref group-art)
	500	(nnmbox-insert-newsgroup-line group-art)
	501	(run-hooks 'nnmail-prepare-save-mail-hook)
	502	(run-hooks 'nnmbox-prepare-save-mail-hook)
	503	group-art))
	504
	505	(defun nnmbox-insert-newsgroup-line (group-art)
	506	(save-excursion
	507	(goto-char (point-min))
	508	(when (search-forward "\n\n" nil t)
	509	(forward-char -1)
	510	(while group-art
	511	(insert (format "X-Gnus-Newsgroup: %s:%d %s\n"
	512	(caar group-art) (cdar group-art)
	513	(current-time-string)))
	514	(setq group-art (cdr group-art))))
	515	t))
	516
	517	(defun nnmbox-active-number (group)
	518	;; Find the next article number in GROUP.
	519	(let ((active (cadr (assoc group nnmbox-group-alist))))
	520	(if active
	521	(setcdr active (1+ (cdr active)))
	522	;; This group is new, so we create a new entry for it.
	523	;; This might be a bit naughty... creating groups on the drop of
	524	;; a hat, but I don't know...
	525	(push (list group (setq active (cons 1 1)))
	526	nnmbox-group-alist))
527	(cdr active)))
528
529	(defun nnmbox-create-mbox ()
530	(when (not (file-exists-p nnmbox-mbox-file))
16409b0b GM	531	(let ((nnmail-file-coding-system
	532	(or nnmbox-file-coding-system-for-write
	533	nnmbox-file-coding-system)))
a76a4381 SM	534	(nnmail-write-region (point-min) (point-min)
a76a4381 SM	535	nnmbox-mbox-file t 'nomesg))))
eec82323 LMI	536
	537	(defun nnmbox-read-mbox ()
	538	(nnmail-activate 'nnmbox)
	539	(nnmbox-create-mbox)
	540	(if (and nnmbox-mbox-buffer
	541	(buffer-name nnmbox-mbox-buffer)
	542	(save-excursion
	543	(set-buffer nnmbox-mbox-buffer)
	544	(= (buffer-size) (nnheader-file-size nnmbox-mbox-file))))
	545	()
	546	(save-excursion
	547	(let ((delim (concat "^" message-unix-mail-delimiter))
	548	(alist nnmbox-group-alist)
	549	start end number)
	550	(set-buffer (setq nnmbox-mbox-buffer
16409b0b GM	551	(let ((nnheader-file-coding-system
	552	nnmbox-file-coding-system))
	553	(nnheader-find-file-noselect
	554	nnmbox-mbox-file nil t))))
	555	(mm-enable-multibyte)
	556	(buffer-disable-undo)
eec82323 LMI	557
	558	;; Go through the group alist and compare against
	559	;; the mbox file.
	560	(while alist
	561	(goto-char (point-max))
	562	(when (and (re-search-backward
	563	(format "^X-Gnus-Newsgroup: %s:\\([0-9]+\\) "
	564	(caar alist)) nil t)
16409b0b GM	565	(> (setq number
	566	(string-to-number
	567	(buffer-substring
	568	(match-beginning 1) (match-end 1))))
	569	(cdadar alist)))
	570	(setcdr (cadar alist) number))
eec82323 LMI	571	(setq alist (cdr alist)))
	572
	573	(goto-char (point-min))
	574	(while (re-search-forward delim nil t)
	575	(setq start (match-beginning 0))
16409b0b GM	576	(unless (search-forward
	577	"\nX-Gnus-Newsgroup: "
	578	(save-excursion
	579	(setq end
	580	(or
	581	(and
	582	;; skip to end of headers first, since mail
	583	;; which has been respooled has additional
	584	;; "From nobody" lines.
	585	(search-forward "\n\n" nil t)
	586	(re-search-forward delim nil t)
	587	(match-beginning 0))
	588	(point-max))))
	589	t)
eec82323 LMI	590	(save-excursion
	591	(save-restriction
	592	(narrow-to-region start end)
	593	(nnmbox-save-mail
	594	(nnmail-article-group 'nnmbox-active-number)))))
	595	(goto-char end))))))
	596
	597	(provide 'nnmbox)
	598
ab5796a9	599	;;; arch-tag: 611dd95f-be37-413a-b3ae-8b059ba93659
eec82323	600	;;; nnmbox.el ends here