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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, |
114f9c96 | 4 | ;; 2004, 2005, 2006, 2007, 2008, 2009, 2010 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 | ||
5e809f55 | 11 | ;; GNU Emacs is free software: you can redistribute it and/or modify |
eec82323 | 12 | ;; it under the terms of the GNU General Public License as published by |
5e809f55 GM |
13 | ;; the Free Software Foundation, either version 3 of the License, or |
14 | ;; (at your option) any later version. | |
eec82323 LMI |
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 | |
5e809f55 | 22 | ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. |
eec82323 LMI |
23 | |
24 | ;;; Commentary: | |
25 | ||
26 | ;;; Code: | |
27 | ||
28 | (require 'nnheader) | |
6748645f LMI |
29 | (require 'nnmail) |
30 | (require 'gnus-start) | |
eec82323 LMI |
31 | (require 'nnmh) |
32 | (require 'nnoo) | |
16409b0b | 33 | (require 'mm-util) |
23f87bed | 34 | (eval-when-compile (require 'cl)) |
eec82323 | 35 | |
6748645f LMI |
36 | (nnoo-declare nndraft |
37 | nnmh) | |
eec82323 | 38 | |
6748645f LMI |
39 | (defvoo nndraft-directory (nnheader-concat gnus-directory "drafts/") |
40 | "Where nndraft will store its files." | |
41 | nnmh-directory) | |
eec82323 | 42 | |
01c52d31 MB |
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'.") | |
47 | ||
eec82323 LMI |
48 | \f |
49 | ||
6748645f LMI |
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) | |
53 | ||
eec82323 | 54 | (defconst nndraft-version "nndraft 1.0") |
6748645f | 55 | (defvoo nndraft-status-string "" nil nnmh-status-string) |
eec82323 LMI |
56 | |
57 | \f | |
58 | ||
59 | ;;; Interface functions. | |
60 | ||
61 | (nnoo-define-basics nndraft) | |
62 | ||
6748645f LMI |
63 | (deffoo nndraft-open-server (server &optional defs) |
64 | (nnoo-change-server 'nndraft server defs) | |
65 | (cond | |
66 | ((not (file-exists-p nndraft-directory)) | |
67 | (nndraft-close-server) | |
68 | (nnheader-report 'nndraft "No such file or directory: %s" | |
69 | nndraft-directory)) | |
70 | ((not (file-directory-p (file-truename nndraft-directory))) | |
71 | (nndraft-close-server) | |
72 | (nnheader-report 'nndraft "Not a directory: %s" nndraft-directory)) | |
73 | (t | |
74 | (nnheader-report 'nndraft "Opened server %s using directory %s" | |
75 | server nndraft-directory) | |
76 | t))) | |
77 | ||
eec82323 | 78 | (deffoo nndraft-retrieve-headers (articles &optional group server fetch-old) |
6748645f | 79 | (nndraft-possibly-change-group group) |
eec82323 LMI |
80 | (save-excursion |
81 | (set-buffer nntp-server-buffer) | |
82 | (erase-buffer) | |
16409b0b | 83 | (let* (article) |
eec82323 LMI |
84 | ;; We don't support fetching by Message-ID. |
85 | (if (stringp (car articles)) | |
86 | 'headers | |
87 | (while articles | |
16409b0b | 88 | (narrow-to-region (point) (point)) |
eec82323 LMI |
89 | (when (nndraft-request-article |
90 | (setq article (pop articles)) group server (current-buffer)) | |
91 | (goto-char (point-min)) | |
92 | (if (search-forward "\n\n" nil t) | |
93 | (forward-line -1) | |
94 | (goto-char (point-max))) | |
95 | (delete-region (point) (point-max)) | |
16409b0b | 96 | (goto-char (point-min)) |
eec82323 | 97 | (insert (format "221 %d Article retrieved.\n" article)) |
16409b0b GM |
98 | (widen) |
99 | (goto-char (point-max)) | |
eec82323 LMI |
100 | (insert ".\n"))) |
101 | ||
102 | (nnheader-fold-continuation-lines) | |
103 | 'headers)))) | |
104 | ||
eec82323 | 105 | (deffoo nndraft-request-article (id &optional group server buffer) |
6748645f | 106 | (nndraft-possibly-change-group group) |
eec82323 LMI |
107 | (when (numberp id) |
108 | ;; We get the newest file of the auto-saved file and the | |
109 | ;; "real" file. | |
110 | (let* ((file (nndraft-article-filename id)) | |
111 | (auto (nndraft-auto-save-file-name file)) | |
112 | (newest (if (file-newer-than-file-p file auto) file auto)) | |
113 | (nntp-server-buffer (or buffer nntp-server-buffer))) | |
114 | (when (and (file-exists-p newest) | |
16409b0b GM |
115 | (let ((nnmail-file-coding-system |
116 | (if (file-newer-than-file-p file auto) | |
23f87bed | 117 | (if (member group '("drafts" "delayed")) |
16409b0b GM |
118 | message-draft-coding-system |
119 | mm-text-coding-system) | |
120 | mm-auto-save-coding-system))) | |
121 | (nnmail-find-file newest))) | |
eec82323 LMI |
122 | (save-excursion |
123 | (set-buffer nntp-server-buffer) | |
124 | (goto-char (point-min)) | |
125 | ;; If there's a mail header separator in this file, | |
126 | ;; we remove it. | |
127 | (when (re-search-forward | |
23f87bed | 128 | (concat "^" (regexp-quote mail-header-separator) "$") nil t) |
eec82323 LMI |
129 | (replace-match "" t t))) |
130 | t)))) | |
131 | ||
132 | (deffoo nndraft-request-restore-buffer (article &optional group server) | |
133 | "Request a new buffer that is restored to the state of ARTICLE." | |
6748645f LMI |
134 | (nndraft-possibly-change-group group) |
135 | (when (nndraft-request-article article group server (current-buffer)) | |
136 | (message-remove-header "xref") | |
137 | (message-remove-header "lines") | |
23f87bed MB |
138 | ;; Articles in nndraft:queue are considered as sent messages. The |
139 | ;; Date field should be the time when they are sent. | |
140 | ;;(message-remove-header "date") | |
6748645f | 141 | t)) |
eec82323 LMI |
142 | |
143 | (deffoo nndraft-request-update-info (group info &optional server) | |
6748645f LMI |
144 | (nndraft-possibly-change-group group) |
145 | (gnus-info-set-read | |
146 | info | |
147 | (gnus-update-read-articles (gnus-group-prefixed-name group '(nndraft "")) | |
148 | (nndraft-articles) t)) | |
16409b0b GM |
149 | (let ((marks (nth 3 info))) |
150 | (when marks | |
151 | ;; Nix out all marks except the `unsend'-able article marks. | |
6748645f LMI |
152 | (setcar (nthcdr 3 info) |
153 | (if (assq 'unsend marks) | |
154 | (list (assq 'unsend marks)) | |
155 | nil)))) | |
eec82323 LMI |
156 | t) |
157 | ||
23f87bed MB |
158 | (defun nndraft-generate-headers () |
159 | (save-excursion | |
160 | (message-generate-headers | |
161 | (message-headers-to-generate | |
01c52d31 | 162 | nndraft-required-headers message-draft-headers nil)))) |
23f87bed | 163 | |
eec82323 LMI |
164 | (deffoo nndraft-request-associate-buffer (group) |
165 | "Associate the current buffer with some article in the draft group." | |
6748645f LMI |
166 | (nndraft-open-server "") |
167 | (nndraft-request-group group) | |
168 | (nndraft-possibly-change-group group) | |
169 | (let ((gnus-verbose-backends nil) | |
170 | (buf (current-buffer)) | |
16409b0b GM |
171 | article file) |
172 | (with-temp-buffer | |
173 | (insert-buffer-substring buf) | |
6748645f | 174 | (setq article (nndraft-request-accept-article |
16409b0b GM |
175 | group (nnoo-current-server 'nndraft) t 'noinsert) |
176 | file (nndraft-article-filename article))) | |
177 | (setq buffer-file-name (expand-file-name file) | |
178 | buffer-auto-save-file-name (make-auto-save-file-name)) | |
eec82323 | 179 | (clear-visited-file-modtime) |
4a43ee9b MB |
180 | (let ((hook (if (boundp 'write-contents-functions) |
181 | 'write-contents-functions | |
182 | 'write-contents-hooks))) | |
183 | (gnus-make-local-hook hook) | |
184 | (add-hook hook 'nndraft-generate-headers nil t)) | |
eec82323 LMI |
185 | article)) |
186 | ||
23f87bed MB |
187 | (deffoo nndraft-request-group (group &optional server dont-check) |
188 | (nndraft-possibly-change-group group) | |
189 | (unless dont-check | |
190 | (let* ((pathname (nnmail-group-pathname group nndraft-directory)) | |
191 | (file-name-coding-system nnmail-pathname-coding-system) | |
192 | dir file) | |
193 | (nnheader-re-read-dir pathname) | |
e9bd5782 | 194 | (setq dir (mapcar (lambda (name) (string-to-number (substring name 1))) |
23f87bed MB |
195 | (ignore-errors (directory-files |
196 | pathname nil "^#[0-9]+#$" t)))) | |
197 | (dolist (n dir) | |
198 | (unless (file-exists-p | |
199 | (setq file (expand-file-name (int-to-string n) pathname))) | |
200 | (rename-file (nndraft-auto-save-file-name file) file))))) | |
201 | (nnoo-parent-function 'nndraft | |
202 | 'nnmh-request-group | |
203 | (list group server dont-check))) | |
204 | ||
01c52d31 MB |
205 | (deffoo nndraft-request-move-article (article group server accept-form |
206 | &optional last move-is-internal) | |
23f87bed MB |
207 | (nndraft-possibly-change-group group) |
208 | (let ((buf (get-buffer-create " *nndraft move*")) | |
209 | result) | |
210 | (and | |
211 | (nndraft-request-article article group server) | |
212 | (save-excursion | |
213 | (set-buffer buf) | |
214 | (erase-buffer) | |
215 | (insert-buffer-substring nntp-server-buffer) | |
216 | (setq result (eval accept-form)) | |
217 | (kill-buffer (current-buffer)) | |
218 | result) | |
219 | (null (nndraft-request-expire-articles (list article) group server 'force)) | |
220 | result))) | |
221 | ||
6748645f LMI |
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 | (res (nnoo-parent-function 'nndraft | |
226 | 'nnmh-request-expire-articles | |
227 | (list articles group server force))) | |
228 | article) | |
eec82323 LMI |
229 | ;; Delete all the "state" files of articles that have been expired. |
230 | (while articles | |
231 | (unless (memq (setq article (pop articles)) res) | |
6748645f | 232 | (let ((auto (nndraft-auto-save-file-name |
eec82323 | 233 | (nndraft-article-filename article)))) |
eec82323 | 234 | (when (file-exists-p auto) |
16409b0b GM |
235 | (funcall nnmail-delete-file-function auto))) |
236 | (dolist (backup | |
237 | (let ((kept-new-versions 1) | |
238 | (kept-old-versions 0)) | |
239 | (find-backup-file-name | |
240 | (nndraft-article-filename article)))) | |
241 | (when (file-exists-p backup) | |
242 | (funcall nnmail-delete-file-function backup))))) | |
eec82323 LMI |
243 | res)) |
244 | ||
245 | (deffoo nndraft-request-accept-article (group &optional server last noinsert) | |
6748645f LMI |
246 | (nndraft-possibly-change-group group) |
247 | (let ((gnus-verbose-backends nil)) | |
248 | (nnoo-parent-function 'nndraft 'nnmh-request-accept-article | |
249 | (list group server last noinsert)))) | |
eec82323 | 250 | |
16409b0b GM |
251 | (deffoo nndraft-request-replace-article (article group buffer) |
252 | (nndraft-possibly-change-group group) | |
253 | (let ((nnmail-file-coding-system | |
23f87bed MB |
254 | (if (member group '("drafts" "delayed")) |
255 | message-draft-coding-system | |
16409b0b GM |
256 | mm-text-coding-system))) |
257 | (nnoo-parent-function 'nndraft 'nnmh-request-replace-article | |
258 | (list article group buffer)))) | |
259 | ||
eec82323 | 260 | (deffoo nndraft-request-create-group (group &optional server args) |
6748645f LMI |
261 | (nndraft-possibly-change-group group) |
262 | (if (file-exists-p nndraft-current-directory) | |
263 | (if (file-directory-p nndraft-current-directory) | |
eec82323 LMI |
264 | t |
265 | nil) | |
266 | (condition-case () | |
267 | (progn | |
6748645f | 268 | (gnus-make-directory nndraft-current-directory) |
eec82323 LMI |
269 | t) |
270 | (file-error nil)))) | |
271 | ||
272 | \f | |
273 | ;;; Low-Level Interface | |
274 | ||
6748645f LMI |
275 | (defun nndraft-possibly-change-group (group) |
276 | (when (and group | |
277 | (not (equal group nndraft-current-group))) | |
278 | (nndraft-open-server "") | |
279 | (setq nndraft-current-group group) | |
280 | (setq nndraft-current-directory | |
281 | (nnheader-concat nndraft-directory group)))) | |
eec82323 LMI |
282 | |
283 | (defun nndraft-article-filename (article &rest args) | |
284 | (apply 'concat | |
6748645f | 285 | (file-name-as-directory nndraft-current-directory) |
eec82323 LMI |
286 | (int-to-string article) |
287 | args)) | |
288 | ||
289 | (defun nndraft-auto-save-file-name (file) | |
290 | (save-excursion | |
291 | (prog1 | |
292 | (progn | |
293 | (set-buffer (get-buffer-create " *draft tmp*")) | |
294 | (setq buffer-file-name file) | |
295 | (make-auto-save-file-name)) | |
296 | (kill-buffer (current-buffer))))) | |
297 | ||
6748645f LMI |
298 | (defun nndraft-articles () |
299 | "Return the list of messages in the group." | |
300 | (gnus-make-directory nndraft-current-directory) | |
301 | (sort | |
e9bd5782 | 302 | (mapcar 'string-to-number |
6748645f LMI |
303 | (directory-files nndraft-current-directory nil "\\`[0-9]+\\'" t)) |
304 | '<)) | |
305 | ||
306 | (nnoo-import nndraft | |
307 | (nnmh | |
308 | nnmh-retrieve-headers | |
309 | nnmh-request-group | |
310 | nnmh-close-group | |
16409b0b | 311 | nnmh-request-list |
23f87bed | 312 | nnmh-request-newsgroups)) |
6748645f | 313 | |
eec82323 LMI |
314 | (provide 'nndraft) |
315 | ||
cbee283d | 316 | ;; arch-tag: 3ce26ca0-41cb-48b1-8703-4dad35e188aa |
eec82323 | 317 | ;;; nndraft.el ends here |