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eec82323 | 1 | ;;; nndraft.el --- draft article access for Gnus |
23f87bed | 2 | |
e84b4b86 | 3 | ;; Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, |
d7a0267c | 4 | ;; 2004, 2005, 2006, 2007 Free Software Foundation, Inc. |
eec82323 | 5 | |
6748645f | 6 | ;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org> |
eec82323 LMI |
7 | ;; Keywords: news |
8 | ||
9 | ;; This file is part of GNU Emacs. | |
10 | ||
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) | |
14 | ;; any later version. | |
15 | ||
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. | |
20 | ||
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 | |
3a35cf56 LK |
23 | ;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
24 | ;; Boston, MA 02110-1301, USA. | |
eec82323 LMI |
25 | |
26 | ;;; Commentary: | |
27 | ||
28 | ;;; Code: | |
29 | ||
30 | (require 'nnheader) | |
6748645f LMI |
31 | (require 'nnmail) |
32 | (require 'gnus-start) | |
eec82323 LMI |
33 | (require 'nnmh) |
34 | (require 'nnoo) | |
16409b0b | 35 | (require 'mm-util) |
23f87bed | 36 | (eval-when-compile (require 'cl)) |
eec82323 | 37 | |
6748645f LMI |
38 | (nnoo-declare nndraft |
39 | nnmh) | |
eec82323 | 40 | |
6748645f LMI |
41 | (defvoo nndraft-directory (nnheader-concat gnus-directory "drafts/") |
42 | "Where nndraft will store its files." | |
43 | nnmh-directory) | |
eec82323 LMI |
44 | |
45 | \f | |
46 | ||
6748645f LMI |
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) | |
50 | ||
eec82323 | 51 | (defconst nndraft-version "nndraft 1.0") |
6748645f | 52 | (defvoo nndraft-status-string "" nil nnmh-status-string) |
eec82323 LMI |
53 | |
54 | \f | |
55 | ||
56 | ;;; Interface functions. | |
57 | ||
58 | (nnoo-define-basics nndraft) | |
59 | ||
6748645f LMI |
60 | (deffoo nndraft-open-server (server &optional defs) |
61 | (nnoo-change-server 'nndraft server defs) | |
62 | (cond | |
63 | ((not (file-exists-p nndraft-directory)) | |
64 | (nndraft-close-server) | |
65 | (nnheader-report 'nndraft "No such file or directory: %s" | |
66 | nndraft-directory)) | |
67 | ((not (file-directory-p (file-truename nndraft-directory))) | |
68 | (nndraft-close-server) | |
69 | (nnheader-report 'nndraft "Not a directory: %s" nndraft-directory)) | |
70 | (t | |
71 | (nnheader-report 'nndraft "Opened server %s using directory %s" | |
72 | server nndraft-directory) | |
73 | t))) | |
74 | ||
eec82323 | 75 | (deffoo nndraft-retrieve-headers (articles &optional group server fetch-old) |
6748645f | 76 | (nndraft-possibly-change-group group) |
eec82323 LMI |
77 | (save-excursion |
78 | (set-buffer nntp-server-buffer) | |
79 | (erase-buffer) | |
16409b0b | 80 | (let* (article) |
eec82323 LMI |
81 | ;; We don't support fetching by Message-ID. |
82 | (if (stringp (car articles)) | |
83 | 'headers | |
84 | (while articles | |
16409b0b | 85 | (narrow-to-region (point) (point)) |
eec82323 LMI |
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) | |
90 | (forward-line -1) | |
91 | (goto-char (point-max))) | |
92 | (delete-region (point) (point-max)) | |
16409b0b | 93 | (goto-char (point-min)) |
eec82323 | 94 | (insert (format "221 %d Article retrieved.\n" article)) |
16409b0b GM |
95 | (widen) |
96 | (goto-char (point-max)) | |
eec82323 LMI |
97 | (insert ".\n"))) |
98 | ||
99 | (nnheader-fold-continuation-lines) | |
100 | 'headers)))) | |
101 | ||
eec82323 | 102 | (deffoo nndraft-request-article (id &optional group server buffer) |
6748645f | 103 | (nndraft-possibly-change-group group) |
eec82323 LMI |
104 | (when (numberp id) |
105 | ;; We get the newest file of the auto-saved file and the | |
106 | ;; "real" file. | |
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) | |
16409b0b GM |
112 | (let ((nnmail-file-coding-system |
113 | (if (file-newer-than-file-p file auto) | |
23f87bed | 114 | (if (member group '("drafts" "delayed")) |
16409b0b GM |
115 | message-draft-coding-system |
116 | mm-text-coding-system) | |
117 | mm-auto-save-coding-system))) | |
118 | (nnmail-find-file newest))) | |
eec82323 LMI |
119 | (save-excursion |
120 | (set-buffer nntp-server-buffer) | |
121 | (goto-char (point-min)) | |
122 | ;; If there's a mail header separator in this file, | |
123 | ;; we remove it. | |
124 | (when (re-search-forward | |
23f87bed | 125 | (concat "^" (regexp-quote mail-header-separator) "$") nil t) |
eec82323 LMI |
126 | (replace-match "" t t))) |
127 | t)))) | |
128 | ||
129 | (deffoo nndraft-request-restore-buffer (article &optional group server) | |
130 | "Request a new buffer that is restored to the state of ARTICLE." | |
6748645f LMI |
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") | |
23f87bed MB |
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") | |
6748645f | 138 | t)) |
eec82323 LMI |
139 | |
140 | (deffoo nndraft-request-update-info (group info &optional server) | |
6748645f LMI |
141 | (nndraft-possibly-change-group group) |
142 | (gnus-info-set-read | |
143 | info | |
144 | (gnus-update-read-articles (gnus-group-prefixed-name group '(nndraft "")) | |
145 | (nndraft-articles) t)) | |
16409b0b GM |
146 | (let ((marks (nth 3 info))) |
147 | (when marks | |
148 | ;; Nix out all marks except the `unsend'-able article marks. | |
6748645f LMI |
149 | (setcar (nthcdr 3 info) |
150 | (if (assq 'unsend marks) | |
151 | (list (assq 'unsend marks)) | |
152 | nil)))) | |
eec82323 LMI |
153 | t) |
154 | ||
23f87bed MB |
155 | (defun nndraft-generate-headers () |
156 | (save-excursion | |
157 | (message-generate-headers | |
158 | (message-headers-to-generate | |
159 | message-required-headers message-draft-headers nil)))) | |
160 | ||
eec82323 LMI |
161 | (deffoo nndraft-request-associate-buffer (group) |
162 | "Associate the current buffer with some article in the draft group." | |
6748645f LMI |
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)) | |
16409b0b GM |
168 | article file) |
169 | (with-temp-buffer | |
170 | (insert-buffer-substring buf) | |
6748645f | 171 | (setq article (nndraft-request-accept-article |
16409b0b GM |
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)) | |
eec82323 | 176 | (clear-visited-file-modtime) |
4a43ee9b MB |
177 | (let ((hook (if (boundp 'write-contents-functions) |
178 | 'write-contents-functions | |
179 | 'write-contents-hooks))) | |
180 | (gnus-make-local-hook hook) | |
181 | (add-hook hook 'nndraft-generate-headers nil t)) | |
eec82323 LMI |
182 | article)) |
183 | ||
23f87bed MB |
184 | (deffoo nndraft-request-group (group &optional server dont-check) |
185 | (nndraft-possibly-change-group group) | |
186 | (unless dont-check | |
187 | (let* ((pathname (nnmail-group-pathname group nndraft-directory)) | |
188 | (file-name-coding-system nnmail-pathname-coding-system) | |
189 | dir file) | |
190 | (nnheader-re-read-dir pathname) | |
e9bd5782 | 191 | (setq dir (mapcar (lambda (name) (string-to-number (substring name 1))) |
23f87bed MB |
192 | (ignore-errors (directory-files |
193 | pathname nil "^#[0-9]+#$" t)))) | |
194 | (dolist (n dir) | |
195 | (unless (file-exists-p | |
196 | (setq file (expand-file-name (int-to-string n) pathname))) | |
197 | (rename-file (nndraft-auto-save-file-name file) file))))) | |
198 | (nnoo-parent-function 'nndraft | |
199 | 'nnmh-request-group | |
200 | (list group server dont-check))) | |
201 | ||
202 | (deffoo nndraft-request-move-article (article group server | |
203 | accept-form &optional last) | |
204 | (nndraft-possibly-change-group group) | |
205 | (let ((buf (get-buffer-create " *nndraft move*")) | |
206 | result) | |
207 | (and | |
208 | (nndraft-request-article article group server) | |
209 | (save-excursion | |
210 | (set-buffer buf) | |
211 | (erase-buffer) | |
212 | (insert-buffer-substring nntp-server-buffer) | |
213 | (setq result (eval accept-form)) | |
214 | (kill-buffer (current-buffer)) | |
215 | result) | |
216 | (null (nndraft-request-expire-articles (list article) group server 'force)) | |
217 | result))) | |
218 | ||
6748645f LMI |
219 | (deffoo nndraft-request-expire-articles (articles group &optional server force) |
220 | (nndraft-possibly-change-group group) | |
221 | (let* ((nnmh-allow-delete-final t) | |
222 | (res (nnoo-parent-function 'nndraft | |
223 | 'nnmh-request-expire-articles | |
224 | (list articles group server force))) | |
225 | article) | |
eec82323 LMI |
226 | ;; Delete all the "state" files of articles that have been expired. |
227 | (while articles | |
228 | (unless (memq (setq article (pop articles)) res) | |
6748645f | 229 | (let ((auto (nndraft-auto-save-file-name |
eec82323 | 230 | (nndraft-article-filename article)))) |
eec82323 | 231 | (when (file-exists-p auto) |
16409b0b GM |
232 | (funcall nnmail-delete-file-function auto))) |
233 | (dolist (backup | |
234 | (let ((kept-new-versions 1) | |
235 | (kept-old-versions 0)) | |
236 | (find-backup-file-name | |
237 | (nndraft-article-filename article)))) | |
238 | (when (file-exists-p backup) | |
239 | (funcall nnmail-delete-file-function backup))))) | |
eec82323 LMI |
240 | res)) |
241 | ||
242 | (deffoo nndraft-request-accept-article (group &optional server last noinsert) | |
6748645f LMI |
243 | (nndraft-possibly-change-group group) |
244 | (let ((gnus-verbose-backends nil)) | |
245 | (nnoo-parent-function 'nndraft 'nnmh-request-accept-article | |
246 | (list group server last noinsert)))) | |
eec82323 | 247 | |
16409b0b GM |
248 | (deffoo nndraft-request-replace-article (article group buffer) |
249 | (nndraft-possibly-change-group group) | |
250 | (let ((nnmail-file-coding-system | |
23f87bed MB |
251 | (if (member group '("drafts" "delayed")) |
252 | message-draft-coding-system | |
16409b0b GM |
253 | mm-text-coding-system))) |
254 | (nnoo-parent-function 'nndraft 'nnmh-request-replace-article | |
255 | (list article group buffer)))) | |
256 | ||
eec82323 | 257 | (deffoo nndraft-request-create-group (group &optional server args) |
6748645f LMI |
258 | (nndraft-possibly-change-group group) |
259 | (if (file-exists-p nndraft-current-directory) | |
260 | (if (file-directory-p nndraft-current-directory) | |
eec82323 LMI |
261 | t |
262 | nil) | |
263 | (condition-case () | |
264 | (progn | |
6748645f | 265 | (gnus-make-directory nndraft-current-directory) |
eec82323 LMI |
266 | t) |
267 | (file-error nil)))) | |
268 | ||
269 | \f | |
270 | ;;; Low-Level Interface | |
271 | ||
6748645f LMI |
272 | (defun nndraft-possibly-change-group (group) |
273 | (when (and group | |
274 | (not (equal group nndraft-current-group))) | |
275 | (nndraft-open-server "") | |
276 | (setq nndraft-current-group group) | |
277 | (setq nndraft-current-directory | |
278 | (nnheader-concat nndraft-directory group)))) | |
eec82323 LMI |
279 | |
280 | (defun nndraft-article-filename (article &rest args) | |
281 | (apply 'concat | |
6748645f | 282 | (file-name-as-directory nndraft-current-directory) |
eec82323 LMI |
283 | (int-to-string article) |
284 | args)) | |
285 | ||
286 | (defun nndraft-auto-save-file-name (file) | |
287 | (save-excursion | |
288 | (prog1 | |
289 | (progn | |
290 | (set-buffer (get-buffer-create " *draft tmp*")) | |
291 | (setq buffer-file-name file) | |
292 | (make-auto-save-file-name)) | |
293 | (kill-buffer (current-buffer))))) | |
294 | ||
6748645f LMI |
295 | (defun nndraft-articles () |
296 | "Return the list of messages in the group." | |
297 | (gnus-make-directory nndraft-current-directory) | |
298 | (sort | |
e9bd5782 | 299 | (mapcar 'string-to-number |
6748645f LMI |
300 | (directory-files nndraft-current-directory nil "\\`[0-9]+\\'" t)) |
301 | '<)) | |
302 | ||
303 | (nnoo-import nndraft | |
304 | (nnmh | |
305 | nnmh-retrieve-headers | |
306 | nnmh-request-group | |
307 | nnmh-close-group | |
16409b0b | 308 | nnmh-request-list |
23f87bed | 309 | nnmh-request-newsgroups)) |
6748645f | 310 | |
eec82323 LMI |
311 | (provide 'nndraft) |
312 | ||
ab5796a9 | 313 | ;;; arch-tag: 3ce26ca0-41cb-48b1-8703-4dad35e188aa |
eec82323 | 314 | ;;; nndraft.el ends here |