1 ;;; nndraft.el --- draft article access for Gnus
3 ;; Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001
4 ;; Free Software Foundation, Inc.
6 ;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
9 ;; This file is part of GNU Emacs.
11 ;; GNU Emacs is free software; you can redistribute it and/or modify
12 ;; it under the terms of the GNU General Public License as published by
13 ;; the Free Software Foundation; either version 2, or (at your option)
16 ;; GNU Emacs is distributed in the hope that it will be useful,
17 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
18 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 ;; GNU General Public License for more details.
21 ;; You should have received a copy of the GNU General Public License
22 ;; along with GNU Emacs; see the file COPYING. If not, write to the
23 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
24 ;; Boston, MA 02111-1307, USA.
36 (eval-when-compile (require 'cl))
41 (defvoo nndraft-directory (nnheader-concat gnus-directory "drafts/")
42 "Where nndraft will store its files."
47 (defvoo nndraft-current-group "" nil nnmh-current-group)
48 (defvoo nndraft-get-new-mail nil nil nnmh-get-new-mail)
49 (defvoo nndraft-current-directory nil nil nnmh-current-directory)
51 (defconst nndraft-version "nndraft 1.0")
52 (defvoo nndraft-status-string "" nil nnmh-status-string)
56 ;;; Interface functions.
58 (nnoo-define-basics nndraft)
60 (deffoo nndraft-open-server (server &optional defs)
61 (nnoo-change-server 'nndraft server defs)
63 ((not (file-exists-p nndraft-directory))
64 (nndraft-close-server)
65 (nnheader-report 'nndraft "No such file or directory: %s"
67 ((not (file-directory-p (file-truename nndraft-directory)))
68 (nndraft-close-server)
69 (nnheader-report 'nndraft "Not a directory: %s" nndraft-directory))
71 (nnheader-report 'nndraft "Opened server %s using directory %s"
72 server nndraft-directory)
75 (deffoo nndraft-retrieve-headers (articles &optional group server fetch-old)
76 (nndraft-possibly-change-group group)
78 (set-buffer nntp-server-buffer)
81 ;; We don't support fetching by Message-ID.
82 (if (stringp (car articles))
85 (narrow-to-region (point) (point))
86 (when (nndraft-request-article
87 (setq article (pop articles)) group server (current-buffer))
88 (goto-char (point-min))
89 (if (search-forward "\n\n" nil t)
91 (goto-char (point-max)))
92 (delete-region (point) (point-max))
93 (goto-char (point-min))
94 (insert (format "221 %d Article retrieved.\n" article))
96 (goto-char (point-max))
99 (nnheader-fold-continuation-lines)
102 (deffoo nndraft-request-article (id &optional group server buffer)
103 (nndraft-possibly-change-group group)
105 ;; We get the newest file of the auto-saved file and the
107 (let* ((file (nndraft-article-filename id))
108 (auto (nndraft-auto-save-file-name file))
109 (newest (if (or (member group '("drafts" "delayed"))
110 (file-newer-than-file-p file auto))
113 (nntp-server-buffer (or buffer nntp-server-buffer))
114 ;; The default value for `message-draft-coding-system' was
115 ;; `emacs-mule' for Emacs in the past, and the existing draft
116 ;; files may have been saved using that coding-system.
117 (maybe-emacs-mule-p (and (not (featurep 'xemacs))
118 (not (equal "queue" group))
119 (eq message-draft-coding-system
120 ;; The present default value.
122 (mm-coding-system-p 'emacs-mule))))
123 (when (and (file-exists-p newest)
124 (if (equal "queue" group)
125 (nnmail-find-file newest)
126 (let ((nnmail-file-coding-system
127 (if (file-newer-than-file-p file auto)
128 (if (member group '("drafts" "delayed"))
129 (if maybe-emacs-mule-p
130 mm-text-coding-system
131 message-draft-coding-system)
132 mm-text-coding-system)
133 mm-auto-save-coding-system)))
134 (nnmail-find-file newest))))
136 (set-buffer nntp-server-buffer)
137 (when maybe-emacs-mule-p
138 (goto-char (point-min))
139 (if (re-search-forward "[^\000-\177]" nil t)
140 ;; Consider the file has been saved using `emacs-mule'.
141 (mm-decode-coding-region (point-min) (point-max)
143 (mm-decode-coding-region (point-min) (point-max)
144 message-draft-coding-system)))
145 (goto-char (point-min))
146 ;; If there's a mail header separator in this file,
148 (when (re-search-forward
149 (concat "^" mail-header-separator "$") nil t)
150 (replace-match "" t t)))
153 (deffoo nndraft-request-restore-buffer (article &optional group server)
154 "Request a new buffer that is restored to the state of ARTICLE."
155 (nndraft-possibly-change-group group)
156 (when (nndraft-request-article article group server (current-buffer))
157 (message-remove-header "xref")
158 (message-remove-header "lines")
159 ;; Articles in nndraft:queue are considered as sent messages. The
160 ;; Date field should be the time when they are sent.
161 ;;(message-remove-header "date")
164 (deffoo nndraft-request-update-info (group info &optional server)
165 (nndraft-possibly-change-group group)
168 (gnus-update-read-articles (gnus-group-prefixed-name group '(nndraft ""))
169 (nndraft-articles) t))
170 (let ((marks (nth 3 info)))
172 ;; Nix out all marks except the `unsend'-able article marks.
173 (setcar (nthcdr 3 info)
174 (if (assq 'unsend marks)
175 (list (assq 'unsend marks))
179 (deffoo nndraft-request-associate-buffer (group)
180 "Associate the current buffer with some article in the draft group."
181 (nndraft-open-server "")
182 (nndraft-request-group group)
183 (nndraft-possibly-change-group group)
184 (let ((gnus-verbose-backends nil)
185 (buf (current-buffer))
188 (insert-buffer-substring buf)
189 (setq article (nndraft-request-accept-article
190 group (nnoo-current-server 'nndraft) t 'noinsert)
191 file (nndraft-article-filename article)))
192 (setq buffer-file-name (expand-file-name file)
193 buffer-auto-save-file-name (make-auto-save-file-name))
194 (clear-visited-file-modtime)
197 (deffoo nndraft-request-group (group &optional server dont-check)
198 (nndraft-possibly-change-group group)
200 (let* ((pathname (nnmail-group-pathname group nndraft-directory))
201 (file-name-coding-system nnmail-pathname-coding-system)
203 (nnheader-re-read-dir pathname)
204 (setq dir (mapcar (lambda (name) (string-to-int (substring name 1)))
205 (directory-files pathname nil "^#[0-9]+#$" t)))
207 (unless (file-exists-p
208 (setq file (expand-file-name (int-to-string n) pathname)))
209 (rename-file (nndraft-auto-save-file-name file) file)))))
210 (nnoo-parent-function 'nndraft
212 (list group server dont-check)))
214 (deffoo nndraft-request-expire-articles (articles group &optional server force)
215 (nndraft-possibly-change-group group)
216 (let* ((nnmh-allow-delete-final t)
217 (res (nnoo-parent-function 'nndraft
218 'nnmh-request-expire-articles
219 (list articles group server force)))
221 ;; Delete all the "state" files of articles that have been expired.
223 (unless (memq (setq article (pop articles)) res)
224 (let ((auto (nndraft-auto-save-file-name
225 (nndraft-article-filename article))))
226 (when (file-exists-p auto)
227 (funcall nnmail-delete-file-function auto)))
229 (let ((kept-new-versions 1)
230 (kept-old-versions 0))
231 (find-backup-file-name
232 (nndraft-article-filename article))))
233 (when (file-exists-p backup)
234 (funcall nnmail-delete-file-function backup)))))
237 (deffoo nndraft-request-accept-article (group &optional server last noinsert)
238 (nndraft-possibly-change-group group)
239 (let ((gnus-verbose-backends nil))
240 (nnoo-parent-function 'nndraft 'nnmh-request-accept-article
241 (list group server last noinsert))))
243 (deffoo nndraft-request-replace-article (article group buffer)
244 (nndraft-possibly-change-group group)
245 (let ((nnmail-file-coding-system
246 (if (member group '("drafts" "delayed"))
247 message-draft-coding-system
248 mm-text-coding-system)))
249 (nnoo-parent-function 'nndraft 'nnmh-request-replace-article
250 (list article group buffer))))
252 (deffoo nndraft-request-create-group (group &optional server args)
253 (nndraft-possibly-change-group group)
254 (if (file-exists-p nndraft-current-directory)
255 (if (file-directory-p nndraft-current-directory)
260 (gnus-make-directory nndraft-current-directory)
265 ;;; Low-Level Interface
267 (defun nndraft-possibly-change-group (group)
269 (not (equal group nndraft-current-group)))
270 (nndraft-open-server "")
271 (setq nndraft-current-group group)
272 (setq nndraft-current-directory
273 (nnheader-concat nndraft-directory group))))
275 (defun nndraft-article-filename (article &rest args)
277 (file-name-as-directory nndraft-current-directory)
278 (int-to-string article)
281 (defun nndraft-auto-save-file-name (file)
285 (set-buffer (get-buffer-create " *draft tmp*"))
286 (setq buffer-file-name file)
287 (make-auto-save-file-name))
288 (kill-buffer (current-buffer)))))
290 (defun nndraft-articles ()
291 "Return the list of messages in the group."
292 (gnus-make-directory nndraft-current-directory)
294 (mapcar 'string-to-int
295 (directory-files nndraft-current-directory nil "\\`[0-9]+\\'" t))
300 nnmh-retrieve-headers
304 nnmh-request-newsgroups
305 nnmh-request-move-article))
309 ;;; nndraft.el ends here