1 ;;; nndraft.el --- draft article access for Gnus
3 ;; Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2003
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.
30 (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 (file-newer-than-file-p file auto) file auto))
110 (nntp-server-buffer (or buffer nntp-server-buffer)))
111 (when (and (file-exists-p newest)
112 (let ((nnmail-file-coding-system
113 (if (file-newer-than-file-p file auto)
114 (if (member group '("drafts" "delayed"))
115 message-draft-coding-system
116 nnheader-text-coding-system)
117 nnheader-auto-save-coding-system)))
118 (nnmail-find-file newest)))
120 (set-buffer nntp-server-buffer)
121 (goto-char (point-min))
122 ;; If there's a mail header separator in this file,
124 (when (re-search-forward
125 (concat "^" (regexp-quote mail-header-separator) "$") nil t)
126 (replace-match "" t t)))
129 (deffoo nndraft-request-restore-buffer (article &optional group server)
130 "Request a new buffer that is restored to the state of ARTICLE."
131 (nndraft-possibly-change-group group)
132 (when (nndraft-request-article article group server (current-buffer))
133 (message-remove-header "xref")
134 (message-remove-header "lines")
135 ;; Articles in nndraft:queue are considered as sent messages. The
136 ;; Date field should be the time when they are sent.
137 ;;(message-remove-header "date")
140 (deffoo nndraft-request-update-info (group info &optional server)
141 (nndraft-possibly-change-group group)
144 (gnus-update-read-articles (gnus-group-prefixed-name group '(nndraft ""))
145 (nndraft-articles) t))
146 (let ((marks (nth 3 info)))
148 ;; Nix out all marks except the `unsend'-able article marks.
149 (setcar (nthcdr 3 info)
150 (if (assq 'unsend marks)
151 (list (assq 'unsend marks))
155 (defun nndraft-generate-headers ()
157 (message-generate-headers
158 (message-headers-to-generate
159 message-required-headers message-draft-headers nil))))
161 (deffoo nndraft-request-associate-buffer (group)
162 "Associate the current buffer with some article in the draft group."
163 (nndraft-open-server "")
164 (nndraft-request-group group)
165 (nndraft-possibly-change-group group)
166 (let ((gnus-verbose-backends nil)
167 (buf (current-buffer))
170 (insert-buffer-substring buf)
171 (setq article (nndraft-request-accept-article
172 group (nnoo-current-server 'nndraft) t 'noinsert)
173 file (nndraft-article-filename article)))
174 (setq buffer-file-name (expand-file-name file)
175 buffer-auto-save-file-name (make-auto-save-file-name))
176 (clear-visited-file-modtime)
177 (make-local-variable 'write-contents-hooks)
178 (push 'nndraft-generate-headers write-contents-hooks)
181 (deffoo nndraft-request-group (group &optional server dont-check)
182 (nndraft-possibly-change-group group)
184 (let* ((pathname (nnmail-group-pathname group nndraft-directory))
185 (file-name-coding-system nnmail-pathname-coding-system)
187 (nnheader-re-read-dir pathname)
188 (setq dir (mapcar (lambda (name) (string-to-int (substring name 1)))
189 (ignore-errors (directory-files
190 pathname nil "^#[0-9]+#$" t))))
192 (unless (file-exists-p
193 (setq file (expand-file-name (int-to-string n) pathname)))
194 (rename-file (nndraft-auto-save-file-name file) file)))))
195 (nnoo-parent-function 'nndraft
197 (list group server dont-check)))
199 (deffoo nndraft-request-move-article (article group server
200 accept-form &optional last)
201 (nndraft-possibly-change-group group)
202 (let ((buf (get-buffer-create " *nndraft move*"))
205 (nndraft-request-article article group server)
209 (insert-buffer-substring nntp-server-buffer)
210 (setq result (eval accept-form))
211 (kill-buffer (current-buffer))
213 (null (nndraft-request-expire-articles (list article) group server 'force))
216 (deffoo nndraft-request-expire-articles (articles group &optional server force)
217 (nndraft-possibly-change-group group)
218 (let* ((nnmh-allow-delete-final t)
219 (res (nnoo-parent-function 'nndraft
220 'nnmh-request-expire-articles
221 (list articles group server force)))
223 ;; Delete all the "state" files of articles that have been expired.
225 (unless (memq (setq article (pop articles)) res)
226 (let ((auto (nndraft-auto-save-file-name
227 (nndraft-article-filename article))))
228 (when (file-exists-p auto)
229 (funcall nnmail-delete-file-function auto)))
231 (let ((kept-new-versions 1)
232 (kept-old-versions 0))
233 (find-backup-file-name
234 (nndraft-article-filename article))))
235 (when (file-exists-p backup)
236 (funcall nnmail-delete-file-function backup)))))
239 (deffoo nndraft-request-accept-article (group &optional server last noinsert)
240 (nndraft-possibly-change-group group)
241 (let ((gnus-verbose-backends nil))
242 (nnoo-parent-function 'nndraft 'nnmh-request-accept-article
243 (list group server last noinsert))))
245 (deffoo nndraft-request-replace-article (article group buffer)
246 (nndraft-possibly-change-group group)
247 (let ((nnmail-file-coding-system
248 (if (member group '("drafts" "delayed"))
249 message-draft-coding-system
250 nnheader-text-coding-system)))
251 (nnoo-parent-function 'nndraft 'nnmh-request-replace-article
252 (list article group buffer))))
254 (deffoo nndraft-request-create-group (group &optional server args)
255 (nndraft-possibly-change-group group)
256 (if (file-exists-p nndraft-current-directory)
257 (if (file-directory-p nndraft-current-directory)
262 (gnus-make-directory nndraft-current-directory)
267 ;;; Low-Level Interface
269 (defun nndraft-possibly-change-group (group)
271 (not (equal group nndraft-current-group)))
272 (nndraft-open-server "")
273 (setq nndraft-current-group group)
274 (setq nndraft-current-directory
275 (nnheader-concat nndraft-directory group))))
277 (defun nndraft-article-filename (article &rest args)
279 (file-name-as-directory nndraft-current-directory)
280 (int-to-string article)
283 (defun nndraft-auto-save-file-name (file)
287 (set-buffer (get-buffer-create " *draft tmp*"))
288 (setq buffer-file-name file)
289 (make-auto-save-file-name))
290 (kill-buffer (current-buffer)))))
292 (defun nndraft-articles ()
293 "Return the list of messages in the group."
294 (gnus-make-directory nndraft-current-directory)
296 (mapcar 'string-to-int
297 (directory-files nndraft-current-directory nil "\\`[0-9]+\\'" t))
302 nnmh-retrieve-headers
306 nnmh-request-newsgroups))
310 ;;; nndraft.el ends here