1;;; nndraft.el --- draft article access for Gnus 2 3;; Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 4;; 2004, 2005, 2006, 2007 Free Software Foundation, Inc. 5 6;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org> 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 23;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 24;; Boston, MA 02110-1301, USA. 25 26;;; Commentary: 27 28;;; Code: 29 30(require 'nnheader) 31(require 'nnmail) 32(require 'gnus-start) 33(require 'nnmh) 34(require 'nnoo) 35(require 'mm-util) 36(eval-when-compile (require 'cl)) 37 38(nnoo-declare nndraft 39 nnmh) 40 41(defvoo nndraft-directory (nnheader-concat gnus-directory "drafts/") 42 "Where nndraft will store its files." 43 nnmh-directory) 44 45 46 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 51(defconst nndraft-version "nndraft 1.0") 52(defvoo nndraft-status-string "" nil nnmh-status-string) 53 54 55 56;;; Interface functions. 57 58(nnoo-define-basics nndraft) 59 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 75(deffoo nndraft-retrieve-headers (articles &optional group server fetch-old) 76 (nndraft-possibly-change-group group) 77 (save-excursion 78 (set-buffer nntp-server-buffer) 79 (erase-buffer) 80 (let* (article) 81 ;; We don't support fetching by Message-ID. 82 (if (stringp (car articles)) 83 'headers 84 (while 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) 90 (forward-line -1) 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)) 95 (widen) 96 (goto-char (point-max)) 97 (insert ".\n"))) 98 99 (nnheader-fold-continuation-lines) 100 'headers)))) 101 102(deffoo nndraft-request-article (id &optional group server buffer) 103 (nndraft-possibly-change-group group) 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) 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 mm-text-coding-system) 117 mm-auto-save-coding-system))) 118 (nnmail-find-file newest))) 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 125 (concat "^" (regexp-quote mail-header-separator) "$") nil t) 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." 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") 138 t)) 139 140(deffoo nndraft-request-update-info (group info &optional server) 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)) 146 (let ((marks (nth 3 info))) 147 (when marks 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)) 152 nil)))) 153 t) 154 155(defun nndraft-generate-headers () 156 (save-excursion 157 (message-generate-headers 158 (message-headers-to-generate 159 message-required-headers message-draft-headers nil)))) 160 161(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)) 168 article file) 169 (with-temp-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 (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)) 182 article)) 183 184(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) 191 (setq dir (mapcar (lambda (name) (string-to-number (substring name 1))) 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))) 218 219(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) 226 ;; Delete all the "state" files of articles that have been expired. 227 (while articles 228 (unless (memq (setq article (pop articles)) res) 229 (let ((auto (nndraft-auto-save-file-name 230 (nndraft-article-filename article)))) 231 (when (file-exists-p auto) 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))))) 240 res)) 241 242(deffoo nndraft-request-accept-article (group &optional server last noinsert) 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)))) 247 248(deffoo nndraft-request-replace-article (article group buffer) 249 (nndraft-possibly-change-group group) 250 (let ((nnmail-file-coding-system 251 (if (member group '("drafts" "delayed")) 252 message-draft-coding-system 253 mm-text-coding-system))) 254 (nnoo-parent-function 'nndraft 'nnmh-request-replace-article 255 (list article group buffer)))) 256 257(deffoo nndraft-request-create-group (group &optional server args) 258 (nndraft-possibly-change-group group) 259 (if (file-exists-p nndraft-current-directory) 260 (if (file-directory-p nndraft-current-directory) 261 t 262 nil) 263 (condition-case () 264 (progn 265 (gnus-make-directory nndraft-current-directory) 266 t) 267 (file-error nil)))) 268 269 270;;; Low-Level Interface 271 272(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)))) 279 280(defun nndraft-article-filename (article &rest args) 281 (apply 'concat 282 (file-name-as-directory nndraft-current-directory) 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))))) 294 295(defun nndraft-articles () 296 "Return the list of messages in the group." 297 (gnus-make-directory nndraft-current-directory) 298 (sort 299 (mapcar 'string-to-number 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 308 nnmh-request-list 309 nnmh-request-newsgroups)) 310 311(provide 'nndraft) 312 313;;; arch-tag: 3ce26ca0-41cb-48b1-8703-4dad35e188aa 314;;; nndraft.el ends here 315