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- ;;; nndraft.el --- draft article access for Gnus
- ;; Copyright (C) 1995,96,97 Free Software Foundation, Inc.
-
- ;; Author: Lars Magne Ingebrigtsen <larsi@ifi.uio.no>
- ;; 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 2, 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; see the file COPYING. If not, write to the
- ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- ;; Boston, MA 02111-1307, USA.
-
- ;;; Commentary:
-
- ;;; Code:
-
- (require 'nnheader)
- (require 'nnmh)
- (require 'nnoo)
- (eval-and-compile (require 'cl))
-
- (nnoo-declare nndraft)
-
- (eval-and-compile
- (autoload 'mail-send-and-exit "sendmail"))
-
- (defvoo nndraft-directory nil
- "Where nndraft will store its directory.")
-
-
-
- (defconst nndraft-version "nndraft 1.0")
- (defvoo nndraft-status-string "")
-
-
-
- ;;; Interface functions.
-
- (nnoo-define-basics nndraft)
-
- (deffoo nndraft-retrieve-headers (articles &optional group server fetch-old)
- (save-excursion
- (set-buffer nntp-server-buffer)
- (erase-buffer)
- (let* ((buf (get-buffer-create " *draft headers*"))
- article)
- (set-buffer buf)
- (buffer-disable-undo (current-buffer))
- (erase-buffer)
- ;; We don't support fetching by Message-ID.
- (if (stringp (car articles))
- 'headers
- (while articles
- (set-buffer buf)
- (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))
- (set-buffer nntp-server-buffer)
- (goto-char (point-max))
- (insert (format "221 %d Article retrieved.\n" article))
- (insert-buffer-substring buf)
- (insert ".\n")))
-
- (nnheader-fold-continuation-lines)
- 'headers))))
-
- (deffoo nndraft-open-server (server &optional defs)
- (nnoo-change-server 'nndraft server defs)
- (unless (assq 'nndraft-directory defs)
- (setq nndraft-directory server))
- (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-request-article (id &optional group server buffer)
- (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)
- (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 "^" 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."
- (let ((file (nndraft-article-filename article ".state"))
- nndraft-point nndraft-mode nndraft-buffer-name)
- (when (file-exists-p file)
- (load file t t t)
- (when nndraft-buffer-name
- (set-buffer (get-buffer-create
- (generate-new-buffer-name nndraft-buffer-name)))
- (nndraft-request-article article group server (current-buffer))
- (funcall nndraft-mode)
- (let ((gnus-verbose-backends nil))
- (nndraft-request-expire-articles (list article) group server t))
- (goto-char nndraft-point))
- nndraft-buffer-name)))
-
- (deffoo nndraft-request-update-info (group info &optional server)
- (setcar (cddr info) nil)
- (when (nth 3 info)
- (setcar (nthcdr 3 info) nil))
- t)
-
- (deffoo nndraft-request-associate-buffer (group)
- "Associate the current buffer with some article in the draft group."
- (let* ((gnus-verbose-backends nil)
- (article (cdr (nndraft-request-accept-article
- group (nnoo-current-server 'nndraft) t 'noinsert)))
- (file (nndraft-article-filename article)))
- (setq buffer-file-name file)
- (setq buffer-auto-save-file-name (make-auto-save-file-name))
- (clear-visited-file-modtime)
- article))
-
- (deffoo nndraft-request-group (group &optional server dont-check)
- (prog1
- (nndraft-execute-nnmh-command
- `(nnmh-request-group group "" ,dont-check))
- (nnheader-report 'nndraft nnmh-status-string)))
-
- (deffoo nndraft-request-list (&optional server dir)
- (nndraft-execute-nnmh-command
- `(nnmh-request-list nil ,dir)))
-
- (deffoo nndraft-request-newgroups (date &optional server)
- (nndraft-execute-nnmh-command
- `(nnmh-request-newgroups ,date ,server)))
-
- (deffoo nndraft-request-expire-articles
- (articles group &optional server force)
- (let ((res (nndraft-execute-nnmh-command
- `(nnmh-request-expire-articles
- ',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 ((file (nndraft-article-filename article ".state"))
- (auto (nndraft-auto-save-file-name
- (nndraft-article-filename article))))
- (when (file-exists-p file)
- (funcall nnmail-delete-file-function file))
- (when (file-exists-p auto)
- (funcall nnmail-delete-file-function auto)))))
- res))
-
- (deffoo nndraft-request-accept-article (group &optional server last noinsert)
- (let* ((point (point))
- (mode major-mode)
- (name (buffer-name))
- (gnus-verbose-backends nil)
- (gart (nndraft-execute-nnmh-command
- `(nnmh-request-accept-article group ,server ,last noinsert)))
- (state
- (nndraft-article-filename (cdr gart) ".state")))
- ;; Write the "state" file.
- (save-excursion
- (nnheader-set-temp-buffer " *draft state*")
- (insert (format "%S\n" `(setq nndraft-mode (quote ,mode)
- nndraft-point ,point
- nndraft-buffer-name ,name)))
- (write-region (point-min) (point-max) state nil 'silent)
- (kill-buffer (current-buffer)))
- gart))
-
- (deffoo nndraft-close-group (group &optional server)
- t)
-
- (deffoo nndraft-request-create-group (group &optional server args)
- (if (file-exists-p nndraft-directory)
- (if (file-directory-p nndraft-directory)
- t
- nil)
- (condition-case ()
- (progn
- (gnus-make-directory nndraft-directory)
- t)
- (file-error nil))))
-
-
- ;;; Low-Level Interface
-
- (defun nndraft-execute-nnmh-command (command)
- (let ((dir (expand-file-name nndraft-directory)))
- (when (string-match "/$" dir)
- (setq dir (substring dir 0 (match-beginning 0))))
- (string-match "/[^/]+$" dir)
- (let ((group (substring dir (1+ (match-beginning 0))))
- (nnmh-directory (substring dir 0 (1+ (match-beginning 0))))
- (nnmail-keep-last-article nil)
- (nnmh-get-new-mail nil))
- (eval command))))
-
- (defun nndraft-article-filename (article &rest args)
- (apply 'concat
- (file-name-as-directory nndraft-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)))))
-
- (provide 'nndraft)
-
- ;;; nndraft.el ends here
-