mirror of
https://git.savannah.gnu.org/git/emacs.git
synced 2024-12-24 10:38:38 +00:00
318 lines
10 KiB
EmacsLisp
318 lines
10 KiB
EmacsLisp
;;; nndraft.el --- draft article access for Gnus
|
||
|
||
;; Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
|
||
;; 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
|
||
|
||
;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
|
||
;; Keywords: news
|
||
|
||
;; This file is part of GNU Emacs.
|
||
|
||
;; GNU Emacs is free software: you can redistribute it and/or modify
|
||
;; it under the terms of the GNU General Public License as published by
|
||
;; the Free Software Foundation, either version 3 of the License, or
|
||
;; (at your option) any later version.
|
||
|
||
;; GNU Emacs is distributed in the hope that it will be useful,
|
||
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
;; GNU General Public License for more details.
|
||
|
||
;; You should have received a copy of the GNU General Public License
|
||
;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
|
||
|
||
;;; Commentary:
|
||
|
||
;;; Code:
|
||
|
||
(require 'nnheader)
|
||
(require 'nnmail)
|
||
(require 'gnus-start)
|
||
(require 'nnmh)
|
||
(require 'nnoo)
|
||
(require 'mm-util)
|
||
(eval-when-compile (require 'cl))
|
||
|
||
(nnoo-declare nndraft
|
||
nnmh)
|
||
|
||
(defvoo nndraft-directory (nnheader-concat gnus-directory "drafts/")
|
||
"Where nndraft will store its files."
|
||
nnmh-directory)
|
||
|
||
(defvar nndraft-required-headers '(Date)
|
||
"*Headers to be generated when saving a draft message.
|
||
The headers in this variable and the ones in `message-required-headers'
|
||
are generated if and only if they are also in `message-draft-headers'.")
|
||
|
||
|
||
|
||
(defvoo nndraft-current-group "" nil nnmh-current-group)
|
||
(defvoo nndraft-get-new-mail nil nil nnmh-get-new-mail)
|
||
(defvoo nndraft-current-directory nil nil nnmh-current-directory)
|
||
|
||
(defconst nndraft-version "nndraft 1.0")
|
||
(defvoo nndraft-status-string "" nil nnmh-status-string)
|
||
|
||
|
||
|
||
;;; Interface functions.
|
||
|
||
(nnoo-define-basics nndraft)
|
||
|
||
(deffoo nndraft-open-server (server &optional defs)
|
||
(nnoo-change-server 'nndraft server defs)
|
||
(cond
|
||
((not (file-exists-p nndraft-directory))
|
||
(nndraft-close-server)
|
||
(nnheader-report 'nndraft "No such file or directory: %s"
|
||
nndraft-directory))
|
||
((not (file-directory-p (file-truename nndraft-directory)))
|
||
(nndraft-close-server)
|
||
(nnheader-report 'nndraft "Not a directory: %s" nndraft-directory))
|
||
(t
|
||
(nnheader-report 'nndraft "Opened server %s using directory %s"
|
||
server nndraft-directory)
|
||
t)))
|
||
|
||
(deffoo nndraft-retrieve-headers (articles &optional group server fetch-old)
|
||
(nndraft-possibly-change-group group)
|
||
(save-excursion
|
||
(set-buffer nntp-server-buffer)
|
||
(erase-buffer)
|
||
(let* (article)
|
||
;; We don't support fetching by Message-ID.
|
||
(if (stringp (car articles))
|
||
'headers
|
||
(while articles
|
||
(narrow-to-region (point) (point))
|
||
(when (nndraft-request-article
|
||
(setq article (pop articles)) group server (current-buffer))
|
||
(goto-char (point-min))
|
||
(if (search-forward "\n\n" nil t)
|
||
(forward-line -1)
|
||
(goto-char (point-max)))
|
||
(delete-region (point) (point-max))
|
||
(goto-char (point-min))
|
||
(insert (format "221 %d Article retrieved.\n" article))
|
||
(widen)
|
||
(goto-char (point-max))
|
||
(insert ".\n")))
|
||
|
||
(nnheader-fold-continuation-lines)
|
||
'headers))))
|
||
|
||
(deffoo nndraft-request-article (id &optional group server buffer)
|
||
(nndraft-possibly-change-group group)
|
||
(when (numberp id)
|
||
;; We get the newest file of the auto-saved file and the
|
||
;; "real" file.
|
||
(let* ((file (nndraft-article-filename id))
|
||
(auto (nndraft-auto-save-file-name file))
|
||
(newest (if (file-newer-than-file-p file auto) file auto))
|
||
(nntp-server-buffer (or buffer nntp-server-buffer)))
|
||
(when (and (file-exists-p newest)
|
||
(let ((nnmail-file-coding-system
|
||
(if (file-newer-than-file-p file auto)
|
||
(if (member group '("drafts" "delayed"))
|
||
message-draft-coding-system
|
||
mm-text-coding-system)
|
||
mm-auto-save-coding-system)))
|
||
(nnmail-find-file newest)))
|
||
(save-excursion
|
||
(set-buffer nntp-server-buffer)
|
||
(goto-char (point-min))
|
||
;; If there's a mail header separator in this file,
|
||
;; we remove it.
|
||
(when (re-search-forward
|
||
(concat "^" (regexp-quote mail-header-separator) "$") nil t)
|
||
(replace-match "" t t)))
|
||
t))))
|
||
|
||
(deffoo nndraft-request-restore-buffer (article &optional group server)
|
||
"Request a new buffer that is restored to the state of ARTICLE."
|
||
(nndraft-possibly-change-group group)
|
||
(when (nndraft-request-article article group server (current-buffer))
|
||
(message-remove-header "xref")
|
||
(message-remove-header "lines")
|
||
;; Articles in nndraft:queue are considered as sent messages. The
|
||
;; Date field should be the time when they are sent.
|
||
;;(message-remove-header "date")
|
||
t))
|
||
|
||
(deffoo nndraft-request-update-info (group info &optional server)
|
||
(nndraft-possibly-change-group group)
|
||
(gnus-info-set-read
|
||
info
|
||
(gnus-update-read-articles (gnus-group-prefixed-name group '(nndraft ""))
|
||
(nndraft-articles) t))
|
||
(let ((marks (nth 3 info)))
|
||
(when marks
|
||
;; Nix out all marks except the `unsend'-able article marks.
|
||
(setcar (nthcdr 3 info)
|
||
(if (assq 'unsend marks)
|
||
(list (assq 'unsend marks))
|
||
nil))))
|
||
t)
|
||
|
||
(defun nndraft-generate-headers ()
|
||
(save-excursion
|
||
(message-generate-headers
|
||
(message-headers-to-generate
|
||
nndraft-required-headers message-draft-headers nil))))
|
||
|
||
(deffoo nndraft-request-associate-buffer (group)
|
||
"Associate the current buffer with some article in the draft group."
|
||
(nndraft-open-server "")
|
||
(nndraft-request-group group)
|
||
(nndraft-possibly-change-group group)
|
||
(let ((gnus-verbose-backends nil)
|
||
(buf (current-buffer))
|
||
article file)
|
||
(with-temp-buffer
|
||
(insert-buffer-substring buf)
|
||
(setq article (nndraft-request-accept-article
|
||
group (nnoo-current-server 'nndraft) t 'noinsert)
|
||
file (nndraft-article-filename article)))
|
||
(setq buffer-file-name (expand-file-name file)
|
||
buffer-auto-save-file-name (make-auto-save-file-name))
|
||
(clear-visited-file-modtime)
|
||
(let ((hook (if (boundp 'write-contents-functions)
|
||
'write-contents-functions
|
||
'write-contents-hooks)))
|
||
(gnus-make-local-hook hook)
|
||
(add-hook hook 'nndraft-generate-headers nil t))
|
||
article))
|
||
|
||
(deffoo nndraft-request-group (group &optional server dont-check)
|
||
(nndraft-possibly-change-group group)
|
||
(unless dont-check
|
||
(let* ((pathname (nnmail-group-pathname group nndraft-directory))
|
||
(file-name-coding-system nnmail-pathname-coding-system)
|
||
dir file)
|
||
(nnheader-re-read-dir pathname)
|
||
(setq dir (mapcar (lambda (name) (string-to-number (substring name 1)))
|
||
(ignore-errors (directory-files
|
||
pathname nil "^#[0-9]+#$" t))))
|
||
(dolist (n dir)
|
||
(unless (file-exists-p
|
||
(setq file (expand-file-name (int-to-string n) pathname)))
|
||
(rename-file (nndraft-auto-save-file-name file) file)))))
|
||
(nnoo-parent-function 'nndraft
|
||
'nnmh-request-group
|
||
(list group server dont-check)))
|
||
|
||
(deffoo nndraft-request-move-article (article group server accept-form
|
||
&optional last move-is-internal)
|
||
(nndraft-possibly-change-group group)
|
||
(let ((buf (get-buffer-create " *nndraft move*"))
|
||
result)
|
||
(and
|
||
(nndraft-request-article article group server)
|
||
(save-excursion
|
||
(set-buffer buf)
|
||
(erase-buffer)
|
||
(insert-buffer-substring nntp-server-buffer)
|
||
(setq result (eval accept-form))
|
||
(kill-buffer (current-buffer))
|
||
result)
|
||
(null (nndraft-request-expire-articles (list article) group server 'force))
|
||
result)))
|
||
|
||
(deffoo nndraft-request-expire-articles (articles group &optional server force)
|
||
(nndraft-possibly-change-group group)
|
||
(let* ((nnmh-allow-delete-final t)
|
||
(res (nnoo-parent-function 'nndraft
|
||
'nnmh-request-expire-articles
|
||
(list articles group server force)))
|
||
article)
|
||
;; Delete all the "state" files of articles that have been expired.
|
||
(while articles
|
||
(unless (memq (setq article (pop articles)) res)
|
||
(let ((auto (nndraft-auto-save-file-name
|
||
(nndraft-article-filename article))))
|
||
(when (file-exists-p auto)
|
||
(funcall nnmail-delete-file-function auto)))
|
||
(dolist (backup
|
||
(let ((kept-new-versions 1)
|
||
(kept-old-versions 0))
|
||
(find-backup-file-name
|
||
(nndraft-article-filename article))))
|
||
(when (file-exists-p backup)
|
||
(funcall nnmail-delete-file-function backup)))))
|
||
res))
|
||
|
||
(deffoo nndraft-request-accept-article (group &optional server last noinsert)
|
||
(nndraft-possibly-change-group group)
|
||
(let ((gnus-verbose-backends nil))
|
||
(nnoo-parent-function 'nndraft 'nnmh-request-accept-article
|
||
(list group server last noinsert))))
|
||
|
||
(deffoo nndraft-request-replace-article (article group buffer)
|
||
(nndraft-possibly-change-group group)
|
||
(let ((nnmail-file-coding-system
|
||
(if (member group '("drafts" "delayed"))
|
||
message-draft-coding-system
|
||
mm-text-coding-system)))
|
||
(nnoo-parent-function 'nndraft 'nnmh-request-replace-article
|
||
(list article group buffer))))
|
||
|
||
(deffoo nndraft-request-create-group (group &optional server args)
|
||
(nndraft-possibly-change-group group)
|
||
(if (file-exists-p nndraft-current-directory)
|
||
(if (file-directory-p nndraft-current-directory)
|
||
t
|
||
nil)
|
||
(condition-case ()
|
||
(progn
|
||
(gnus-make-directory nndraft-current-directory)
|
||
t)
|
||
(file-error nil))))
|
||
|
||
|
||
;;; Low-Level Interface
|
||
|
||
(defun nndraft-possibly-change-group (group)
|
||
(when (and group
|
||
(not (equal group nndraft-current-group)))
|
||
(nndraft-open-server "")
|
||
(setq nndraft-current-group group)
|
||
(setq nndraft-current-directory
|
||
(nnheader-concat nndraft-directory group))))
|
||
|
||
(defun nndraft-article-filename (article &rest args)
|
||
(apply 'concat
|
||
(file-name-as-directory nndraft-current-directory)
|
||
(int-to-string article)
|
||
args))
|
||
|
||
(defun nndraft-auto-save-file-name (file)
|
||
(save-excursion
|
||
(prog1
|
||
(progn
|
||
(set-buffer (get-buffer-create " *draft tmp*"))
|
||
(setq buffer-file-name file)
|
||
(make-auto-save-file-name))
|
||
(kill-buffer (current-buffer)))))
|
||
|
||
(defun nndraft-articles ()
|
||
"Return the list of messages in the group."
|
||
(gnus-make-directory nndraft-current-directory)
|
||
(sort
|
||
(mapcar 'string-to-number
|
||
(directory-files nndraft-current-directory nil "\\`[0-9]+\\'" t))
|
||
'<))
|
||
|
||
(nnoo-import nndraft
|
||
(nnmh
|
||
nnmh-retrieve-headers
|
||
nnmh-request-group
|
||
nnmh-close-group
|
||
nnmh-request-list
|
||
nnmh-request-newsgroups))
|
||
|
||
(provide 'nndraft)
|
||
|
||
;; arch-tag: 3ce26ca0-41cb-48b1-8703-4dad35e188aa
|
||
;;; nndraft.el ends here
|