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268 lines
8.3 KiB
EmacsLisp
268 lines
8.3 KiB
EmacsLisp
;;; nndraft.el --- draft article access for Gnus
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;; Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000
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;; Free Software Foundation, Inc.
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;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
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;; Keywords: news
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;; This file is part of GNU Emacs.
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;; GNU Emacs is free software; you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation; either version 2, or (at your option)
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;; any later version.
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;; GNU Emacs is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs; see the file COPYING. If not, write to the
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;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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;; Boston, MA 02111-1307, USA.
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;;; Commentary:
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;;; Code:
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(require 'nnheader)
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(require 'nnmail)
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(require 'gnus-start)
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(require 'nnmh)
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(require 'nnoo)
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(require 'mm-util)
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(eval-when-compile
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(require 'cl)
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;; This is just to shut up the byte-compiler.
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(fset 'nndraft-request-group 'ignore))
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(nnoo-declare nndraft
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nnmh)
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(defvoo nndraft-directory (nnheader-concat gnus-directory "drafts/")
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"Where nndraft will store its files."
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nnmh-directory)
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(defvoo nndraft-current-group "" nil nnmh-current-group)
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(defvoo nndraft-get-new-mail nil nil nnmh-get-new-mail)
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(defvoo nndraft-current-directory nil nil nnmh-current-directory)
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(defconst nndraft-version "nndraft 1.0")
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(defvoo nndraft-status-string "" nil nnmh-status-string)
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;;; Interface functions.
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(nnoo-define-basics nndraft)
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(deffoo nndraft-open-server (server &optional defs)
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(nnoo-change-server 'nndraft server defs)
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(cond
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((not (file-exists-p nndraft-directory))
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(nndraft-close-server)
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(nnheader-report 'nndraft "No such file or directory: %s"
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nndraft-directory))
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((not (file-directory-p (file-truename nndraft-directory)))
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(nndraft-close-server)
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(nnheader-report 'nndraft "Not a directory: %s" nndraft-directory))
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(t
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(nnheader-report 'nndraft "Opened server %s using directory %s"
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server nndraft-directory)
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t)))
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(deffoo nndraft-retrieve-headers (articles &optional group server fetch-old)
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(nndraft-possibly-change-group group)
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(save-excursion
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(set-buffer nntp-server-buffer)
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(erase-buffer)
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(let* (article)
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;; We don't support fetching by Message-ID.
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(if (stringp (car articles))
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'headers
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(while articles
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(narrow-to-region (point) (point))
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(when (nndraft-request-article
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(setq article (pop articles)) group server (current-buffer))
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(goto-char (point-min))
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(if (search-forward "\n\n" nil t)
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(forward-line -1)
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(goto-char (point-max)))
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(delete-region (point) (point-max))
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(goto-char (point-min))
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(insert (format "221 %d Article retrieved.\n" article))
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(widen)
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(goto-char (point-max))
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(insert ".\n")))
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(nnheader-fold-continuation-lines)
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'headers))))
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(deffoo nndraft-request-article (id &optional group server buffer)
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(nndraft-possibly-change-group group)
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(when (numberp id)
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;; We get the newest file of the auto-saved file and the
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;; "real" file.
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(let* ((file (nndraft-article-filename id))
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(auto (nndraft-auto-save-file-name file))
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(newest (if (file-newer-than-file-p file auto) file auto))
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(nntp-server-buffer (or buffer nntp-server-buffer)))
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(when (and (file-exists-p newest)
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(let ((nnmail-file-coding-system
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(if (file-newer-than-file-p file auto)
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(if (equal group "drafts")
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message-draft-coding-system
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mm-text-coding-system)
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mm-auto-save-coding-system)))
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(nnmail-find-file newest)))
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(save-excursion
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(set-buffer nntp-server-buffer)
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(goto-char (point-min))
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;; If there's a mail header separator in this file,
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;; we remove it.
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(when (re-search-forward
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(concat "^" mail-header-separator "$") nil t)
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(replace-match "" t t)))
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t))))
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(deffoo nndraft-request-restore-buffer (article &optional group server)
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"Request a new buffer that is restored to the state of ARTICLE."
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(nndraft-possibly-change-group group)
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(when (nndraft-request-article article group server (current-buffer))
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(message-remove-header "xref")
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(message-remove-header "lines")
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t))
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(deffoo nndraft-request-update-info (group info &optional server)
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(nndraft-possibly-change-group group)
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(gnus-info-set-read
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info
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(gnus-update-read-articles (gnus-group-prefixed-name group '(nndraft ""))
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(nndraft-articles) t))
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(let ((marks (nth 3 info)))
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(when marks
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;; Nix out all marks except the `unsend'-able article marks.
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(setcar (nthcdr 3 info)
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(if (assq 'unsend marks)
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(list (assq 'unsend marks))
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nil))))
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t)
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(deffoo nndraft-request-associate-buffer (group)
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"Associate the current buffer with some article in the draft group."
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(nndraft-open-server "")
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(nndraft-request-group group)
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(nndraft-possibly-change-group group)
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(let ((gnus-verbose-backends nil)
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(buf (current-buffer))
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article file)
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(with-temp-buffer
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(insert-buffer-substring buf)
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(setq article (nndraft-request-accept-article
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group (nnoo-current-server 'nndraft) t 'noinsert)
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file (nndraft-article-filename article)))
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(setq buffer-file-name (expand-file-name file)
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buffer-auto-save-file-name (make-auto-save-file-name))
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(clear-visited-file-modtime)
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article))
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(deffoo nndraft-request-expire-articles (articles group &optional server force)
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(nndraft-possibly-change-group group)
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(let* ((nnmh-allow-delete-final t)
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(res (nnoo-parent-function 'nndraft
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'nnmh-request-expire-articles
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(list articles group server force)))
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article)
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;; Delete all the "state" files of articles that have been expired.
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(while articles
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(unless (memq (setq article (pop articles)) res)
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(let ((auto (nndraft-auto-save-file-name
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(nndraft-article-filename article))))
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(when (file-exists-p auto)
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(funcall nnmail-delete-file-function auto)))
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(dolist (backup
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(let ((kept-new-versions 1)
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(kept-old-versions 0))
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(find-backup-file-name
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(nndraft-article-filename article))))
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(when (file-exists-p backup)
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(funcall nnmail-delete-file-function backup)))))
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res))
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(deffoo nndraft-request-accept-article (group &optional server last noinsert)
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(nndraft-possibly-change-group group)
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(let ((gnus-verbose-backends nil))
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(nnoo-parent-function 'nndraft 'nnmh-request-accept-article
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(list group server last noinsert))))
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(deffoo nndraft-request-replace-article (article group buffer)
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(nndraft-possibly-change-group group)
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(let ((nnmail-file-coding-system
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(if (equal group "drafts")
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mm-auto-save-coding-system
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mm-text-coding-system)))
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(nnoo-parent-function 'nndraft 'nnmh-request-replace-article
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(list article group buffer))))
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(deffoo nndraft-request-create-group (group &optional server args)
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(nndraft-possibly-change-group group)
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(if (file-exists-p nndraft-current-directory)
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(if (file-directory-p nndraft-current-directory)
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t
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nil)
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(condition-case ()
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(progn
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(gnus-make-directory nndraft-current-directory)
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t)
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(file-error nil))))
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;;; Low-Level Interface
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(defun nndraft-possibly-change-group (group)
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(when (and group
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(not (equal group nndraft-current-group)))
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(nndraft-open-server "")
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(setq nndraft-current-group group)
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(setq nndraft-current-directory
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(nnheader-concat nndraft-directory group))))
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(defun nndraft-article-filename (article &rest args)
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(apply 'concat
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(file-name-as-directory nndraft-current-directory)
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(int-to-string article)
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args))
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(defun nndraft-auto-save-file-name (file)
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(save-excursion
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(prog1
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(progn
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(set-buffer (get-buffer-create " *draft tmp*"))
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(setq buffer-file-name file)
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(make-auto-save-file-name))
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(kill-buffer (current-buffer)))))
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(defun nndraft-articles ()
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"Return the list of messages in the group."
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(gnus-make-directory nndraft-current-directory)
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(sort
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(mapcar 'string-to-int
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(directory-files nndraft-current-directory nil "\\`[0-9]+\\'" t))
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'<))
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(nnoo-import nndraft
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(nnmh
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nnmh-retrieve-headers
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nnmh-request-group
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nnmh-close-group
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nnmh-request-list
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nnmh-request-newsgroups
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nnmh-request-move-article))
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(provide 'nndraft)
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;;; nndraft.el ends here
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