1 ;;; nndraft.el --- draft article access for Gnus
3 ;; Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
4 ;; 2004, 2005, 2006, 2007, 2008, 2009, 2010 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 3 of the License, or
14 ;; (at your option) any later version.
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. If not, see <http://www.gnu.org/licenses/>.
34 (eval-when-compile (require 'cl
))
39 (defvoo nndraft-directory
(nnheader-concat gnus-directory
"drafts/")
40 "Where nndraft will store its files."
43 (defvar nndraft-required-headers
'(Date)
44 "*Headers to be generated when saving a draft message.
45 The headers in this variable and the ones in `message-required-headers'
46 are generated if and only if they are also in `message-draft-headers'.")
50 (defvoo nndraft-current-group
"" nil nnmh-current-group
)
51 (defvoo nndraft-get-new-mail nil nil nnmh-get-new-mail
)
52 (defvoo nndraft-current-directory nil nil nnmh-current-directory
)
54 (defconst nndraft-version
"nndraft 1.0")
55 (defvoo nndraft-status-string
"" nil nnmh-status-string
)
59 ;;; Interface functions.
61 (nnoo-define-basics nndraft
)
63 (deffoo nndraft-open-server
(server &optional defs
)
64 (nnoo-change-server 'nndraft server defs
)
66 ((not (file-exists-p nndraft-directory
))
67 (nndraft-close-server)
68 (nnheader-report 'nndraft
"No such file or directory: %s"
70 ((not (file-directory-p (file-truename nndraft-directory
)))
71 (nndraft-close-server)
72 (nnheader-report 'nndraft
"Not a directory: %s" nndraft-directory
))
74 (nnheader-report 'nndraft
"Opened server %s using directory %s"
75 server nndraft-directory
)
78 (deffoo nndraft-retrieve-headers
(articles &optional group server fetch-old
)
79 (nndraft-possibly-change-group group
)
80 (with-current-buffer nntp-server-buffer
82 (let (article lines chars
)
83 ;; We don't support fetching by Message-ID.
84 (if (stringp (car articles
))
87 (narrow-to-region (point) (point))
88 (when (nndraft-request-article
89 (setq article
(pop articles
)) group server
(current-buffer))
90 (goto-char (point-min))
91 (if (search-forward "\n\n" nil t
)
93 (goto-char (point-max)))
94 (setq lines
(count-lines (point) (point-max))
95 chars
(- (point-max) (point)))
96 (delete-region (point) (point-max))
97 (goto-char (point-min))
98 (insert (format "221 %d Article retrieved.\n" article
))
99 (insert (format "Lines: %d\nChars: %d\n" lines chars
))
101 (goto-char (point-max))
104 (nnheader-fold-continuation-lines)
107 (deffoo nndraft-request-article
(id &optional group server buffer
)
108 (nndraft-possibly-change-group group
)
110 ;; We get the newest file of the auto-saved file and the
112 (let* ((file (nndraft-article-filename id
))
113 (auto (nndraft-auto-save-file-name file
))
114 (newest (if (file-newer-than-file-p file auto
) file auto
))
115 (nntp-server-buffer (or buffer nntp-server-buffer
)))
116 (when (and (file-exists-p newest
)
117 (let ((nnmail-file-coding-system
118 (if (file-newer-than-file-p file auto
)
119 (if (member group
'("drafts" "delayed"))
120 message-draft-coding-system
121 mm-text-coding-system
)
122 mm-auto-save-coding-system
)))
123 (nnmail-find-file newest
)))
124 (with-current-buffer nntp-server-buffer
125 (goto-char (point-min))
126 ;; If there's a mail header separator in this file,
128 (when (re-search-forward
129 (concat "^" (regexp-quote mail-header-separator
) "$") nil t
)
130 (replace-match "" t t
)))
133 (deffoo nndraft-request-restore-buffer
(article &optional group server
)
134 "Request a new buffer that is restored to the state of ARTICLE."
135 (nndraft-possibly-change-group group
)
136 (when (nndraft-request-article article group server
(current-buffer))
137 (message-remove-header "xref")
138 (message-remove-header "lines")
139 ;; Articles in nndraft:queue are considered as sent messages. The
140 ;; Date field should be the time when they are sent.
141 ;;(message-remove-header "date")
144 (deffoo nndraft-request-update-info
(group info
&optional server
)
145 (nndraft-possibly-change-group group
)
148 (gnus-update-read-articles (gnus-group-prefixed-name group
'(nndraft ""))
149 (nndraft-articles) t
))
150 (let ((marks (nth 3 info
)))
152 ;; Nix out all marks except the `unsend'-able article marks.
153 (setcar (nthcdr 3 info
)
154 (if (assq 'unsend marks
)
155 (list (assq 'unsend marks
))
159 (defun nndraft-generate-headers ()
161 (message-generate-headers
162 (message-headers-to-generate
163 nndraft-required-headers message-draft-headers nil
))))
165 (deffoo nndraft-request-associate-buffer
(group)
166 "Associate the current buffer with some article in the draft group."
167 (nndraft-open-server "")
168 (nndraft-request-group group
)
169 (nndraft-possibly-change-group group
)
170 (let ((gnus-verbose-backends nil
)
171 (buf (current-buffer))
174 (insert-buffer-substring buf
)
175 (setq article
(nndraft-request-accept-article
176 group
(nnoo-current-server 'nndraft
) t
'noinsert
)
177 file
(nndraft-article-filename article
)))
178 (setq buffer-file-name
(expand-file-name file
)
179 buffer-auto-save-file-name
(make-auto-save-file-name))
180 (clear-visited-file-modtime)
181 (let ((hook (if (boundp 'write-contents-functions
)
182 'write-contents-functions
183 'write-contents-hooks
)))
184 (gnus-make-local-hook hook
)
185 (add-hook hook
'nndraft-generate-headers nil t
))
188 (deffoo nndraft-request-group
(group &optional server dont-check info
)
189 (nndraft-possibly-change-group group
)
191 (let* ((pathname (nnmail-group-pathname group nndraft-directory
))
192 (file-name-coding-system nnmail-pathname-coding-system
)
194 (nnheader-re-read-dir pathname
)
195 (setq dir
(mapcar (lambda (name) (string-to-number (substring name
1)))
196 (ignore-errors (directory-files
197 pathname nil
"^#[0-9]+#$" t
))))
199 (unless (file-exists-p
200 (setq file
(expand-file-name (int-to-string n
) pathname
)))
201 (rename-file (nndraft-auto-save-file-name file
) file
)))))
202 (nnoo-parent-function 'nndraft
204 (list group server dont-check
)))
206 (deffoo nndraft-request-move-article
(article group server accept-form
207 &optional last move-is-internal
)
208 (nndraft-possibly-change-group group
)
209 (let ((buf (get-buffer-create " *nndraft move*"))
212 (nndraft-request-article article group server
)
213 (with-current-buffer buf
215 (insert-buffer-substring nntp-server-buffer
)
216 (setq result
(eval accept-form
))
217 (kill-buffer (current-buffer))
219 (null (nndraft-request-expire-articles (list article
) group server
'force
))
222 (deffoo nndraft-request-expire-articles
(articles group
&optional server force
)
223 (nndraft-possibly-change-group group
)
224 (let* ((nnmh-allow-delete-final t
)
225 (nnmail-expiry-target
226 (or (gnus-group-find-parameter
227 (gnus-group-prefixed-name group
(list 'nndraft server
))
229 nnmail-expiry-target
))
230 (res (nnoo-parent-function 'nndraft
231 'nnmh-request-expire-articles
232 (list articles group server force
)))
234 ;; Delete all the "state" files of articles that have been expired.
236 (unless (memq (setq article
(pop articles
)) res
)
237 (let ((auto (nndraft-auto-save-file-name
238 (nndraft-article-filename article
))))
239 (when (file-exists-p auto
)
240 (funcall nnmail-delete-file-function auto
)))
242 (let ((kept-new-versions 1)
243 (kept-old-versions 0))
244 (find-backup-file-name
245 (nndraft-article-filename article
))))
246 (when (file-exists-p backup
)
247 (funcall nnmail-delete-file-function backup
)))))
250 (deffoo nndraft-request-accept-article
(group &optional server last noinsert
)
251 (nndraft-possibly-change-group group
)
252 (let ((gnus-verbose-backends nil
))
253 (nnoo-parent-function 'nndraft
'nnmh-request-accept-article
254 (list group server last noinsert
))))
256 (deffoo nndraft-request-replace-article
(article group buffer
)
257 (nndraft-possibly-change-group group
)
258 (let ((nnmail-file-coding-system
259 (if (member group
'("drafts" "delayed"))
260 message-draft-coding-system
261 mm-text-coding-system
)))
262 (nnoo-parent-function 'nndraft
'nnmh-request-replace-article
263 (list article group buffer
))))
265 (deffoo nndraft-request-create-group
(group &optional server args
)
266 (nndraft-possibly-change-group group
)
267 (if (file-exists-p nndraft-current-directory
)
268 (if (file-directory-p nndraft-current-directory
)
273 (gnus-make-directory nndraft-current-directory
)
278 ;;; Low-Level Interface
280 (defun nndraft-possibly-change-group (group)
282 (not (equal group nndraft-current-group
)))
283 (nndraft-open-server "")
284 (setq nndraft-current-group group
)
285 (setq nndraft-current-directory
286 (nnheader-concat nndraft-directory group
))))
288 (defun nndraft-article-filename (article &rest args
)
290 (file-name-as-directory nndraft-current-directory
)
291 (int-to-string article
)
294 (defun nndraft-auto-save-file-name (file)
298 (set-buffer (get-buffer-create " *draft tmp*"))
299 (setq buffer-file-name file
)
300 (make-auto-save-file-name))
301 (kill-buffer (current-buffer)))))
303 (defun nndraft-articles ()
304 "Return the list of messages in the group."
305 (gnus-make-directory nndraft-current-directory
)
307 (mapcar 'string-to-number
308 (directory-files nndraft-current-directory nil
"\\`[0-9]+\\'" t
))
313 nnmh-retrieve-headers
317 nnmh-request-newsgroups
))
321 ;;; nndraft.el ends here