1 ;;; nndraft.el --- draft article access for Gnus
2 ;; Copyright (C) 1995,96,97 Free Software Foundation, Inc.
4 ;; Author: Lars Magne Ingebrigtsen <larsi@ifi.uio.no>
7 ;; This file is part of GNU Emacs.
9 ;; GNU Emacs is free software; you can redistribute it and/or modify
10 ;; it under the terms of the GNU General Public License as published by
11 ;; the Free Software Foundation; either version 2, or (at your option)
14 ;; GNU Emacs is distributed in the hope that it will be useful,
15 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
16 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 ;; GNU General Public License for more details.
19 ;; You should have received a copy of the GNU General Public License
20 ;; along with GNU Emacs; see the file COPYING. If not, write to the
21 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
22 ;; Boston, MA 02111-1307, USA.
33 (eval-when-compile (require 'cl))
38 (defvoo nndraft-directory (nnheader-concat gnus-directory "drafts/")
39 "Where nndraft will store its files."
44 (defvoo nndraft-current-group "" nil nnmh-current-group)
45 (defvoo nndraft-get-new-mail nil nil nnmh-get-new-mail)
46 (defvoo nndraft-current-directory nil nil nnmh-current-directory)
48 (defconst nndraft-version "nndraft 1.0")
49 (defvoo nndraft-status-string "" nil nnmh-status-string)
53 ;;; Interface functions.
55 (nnoo-define-basics nndraft)
57 (deffoo nndraft-open-server (server &optional defs)
58 (nnoo-change-server 'nndraft server defs)
60 ((not (file-exists-p nndraft-directory))
61 (nndraft-close-server)
62 (nnheader-report 'nndraft "No such file or directory: %s"
64 ((not (file-directory-p (file-truename nndraft-directory)))
65 (nndraft-close-server)
66 (nnheader-report 'nndraft "Not a directory: %s" nndraft-directory))
68 (nnheader-report 'nndraft "Opened server %s using directory %s"
69 server nndraft-directory)
72 (deffoo nndraft-retrieve-headers (articles &optional group server fetch-old)
73 (nndraft-possibly-change-group group)
75 (set-buffer nntp-server-buffer)
77 (let* ((buf (get-buffer-create " *draft headers*"))
80 (buffer-disable-undo (current-buffer))
82 ;; We don't support fetching by Message-ID.
83 (if (stringp (car articles))
87 (when (nndraft-request-article
88 (setq article (pop articles)) group server (current-buffer))
89 (goto-char (point-min))
90 (if (search-forward "\n\n" nil t)
92 (goto-char (point-max)))
93 (delete-region (point) (point-max))
94 (set-buffer nntp-server-buffer)
95 (goto-char (point-max))
96 (insert (format "221 %d Article retrieved.\n" article))
97 (insert-buffer-substring buf)
100 (nnheader-fold-continuation-lines)
103 (deffoo nndraft-request-article (id &optional group server buffer)
104 (nndraft-possibly-change-group group)
106 ;; We get the newest file of the auto-saved file and the
108 (let* ((file (nndraft-article-filename id))
109 (auto (nndraft-auto-save-file-name file))
110 (newest (if (file-newer-than-file-p file auto) file auto))
111 (nntp-server-buffer (or buffer nntp-server-buffer)))
112 (when (and (file-exists-p newest)
113 (nnmail-find-file newest))
115 (set-buffer nntp-server-buffer)
116 (goto-char (point-min))
117 ;; If there's a mail header separator in this file,
119 (when (re-search-forward
120 (concat "^" mail-header-separator "$") nil t)
121 (replace-match "" t t)))
124 (deffoo nndraft-request-restore-buffer (article &optional group server)
125 "Request a new buffer that is restored to the state of ARTICLE."
126 (nndraft-possibly-change-group group)
127 (when (nndraft-request-article article group server (current-buffer))
128 (let ((gnus-verbose-backends nil))
129 (nndraft-request-expire-articles (list article) group server t))
132 (deffoo nndraft-request-update-info (group info &optional server)
133 (nndraft-possibly-change-group group)
136 (gnus-update-read-articles (gnus-group-prefixed-name group '(nndraft ""))
137 (nndraft-articles) t))
139 (when (setq marks (nth 3 info))
140 (setcar (nthcdr 3 info)
141 (if (assq 'unsend marks)
142 (list (assq 'unsend marks))
146 (deffoo nndraft-request-associate-buffer (group)
147 "Associate the current buffer with some article in the draft group."
148 (nndraft-possibly-change-group group)
149 (let ((gnus-verbose-backends nil)
150 (buf (current-buffer))
152 (nnheader-temp-write nil
154 (setq article (nndraft-request-accept-article
155 group (nnoo-current-server 'nndraft) t 'noinsert))
156 (setq file (nndraft-article-filename article)))
157 (setq buffer-file-name file)
158 (setq buffer-auto-save-file-name (make-auto-save-file-name))
159 (clear-visited-file-modtime)
162 (deffoo nndraft-request-expire-articles (articles group &optional server force)
163 (nndraft-possibly-change-group group)
164 (let* ((nnmh-allow-delete-final t)
165 (res (nndraft-execute-nnmh-command
166 `(nnmh-request-expire-articles
167 ',articles group ,server ,force)))
169 ;; Delete all the "state" files of articles that have been expired.
171 (unless (memq (setq article (pop articles)) res)
172 (let ((auto (nndraft-auto-save-file-name
173 (nndraft-article-filename article))))
174 (when (file-exists-p auto)
175 (funcall nnmail-delete-file-function auto)))))
178 (deffoo nndraft-request-accept-article (group &optional server last noinsert)
179 (nndraft-possibly-change-group group)
180 (let ((gnus-verbose-backends nil))
181 (nndraft-execute-nnmh-command
182 `(nnmh-request-accept-article group ,server ,last noinsert))))
184 (deffoo nndraft-request-create-group (group &optional server args)
185 (nndraft-possibly-change-group group)
186 (if (file-exists-p nndraft-current-directory)
187 (if (file-directory-p nndraft-current-directory)
192 (gnus-make-directory nndraft-current-directory)
197 ;;; Low-Level Interface
199 (defun nndraft-possibly-change-group (group)
201 (not (equal group nndraft-current-group)))
202 (setq nndraft-current-group group)
203 (setq nndraft-current-directory
204 (nnheader-concat nndraft-directory group))))
206 (defun nndraft-execute-nnmh-command (command)
207 (let* ((dir (directory-file-name
208 (expand-file-name nndraft-current-directory)))
209 (group (file-name-nondirectory dir))
210 (nnmh-directory (file-name-directory dir))
211 (nnmail-keep-last-article nil)
212 (nnmh-get-new-mail nil))
215 (defun nndraft-article-filename (article &rest args)
217 (file-name-as-directory nndraft-current-directory)
218 (int-to-string article)
221 (defun nndraft-auto-save-file-name (file)
225 (set-buffer (get-buffer-create " *draft tmp*"))
226 (setq buffer-file-name file)
227 (make-auto-save-file-name))
228 (kill-buffer (current-buffer)))))
230 (defun nndraft-articles ()
231 "Return the list of messages in the group."
232 (gnus-make-directory nndraft-current-directory)
234 (mapcar 'string-to-int
235 (directory-files nndraft-current-directory nil "\\`[0-9]+\\'" t))
240 nnmh-retrieve-headers
244 nnmh-request-newsgroups
245 nnmh-request-move-article
246 nnmh-request-replace-article))
250 ;;; nndraft.el ends here