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704 lines
22 KiB
EmacsLisp
704 lines
22 KiB
EmacsLisp
;;; nnml.el --- mail spool access for Gnus
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;; Copyright (C) 1995 Free Software Foundation, Inc.
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;; Author: Lars Magne Ingebrigtsen <larsi@ifi.uio.no>
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;; Masanobu UMEDA <umerin@flab.flab.fujitsu.junet>
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;; Keywords: news, mail
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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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;; Based on nnspool.el by Masanobu UMEDA <umerin@flab.flab.fujitsu.junet>.
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;; For an overview of what the interface functions do, please see the
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;; Gnus sources.
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;;; Code:
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(require 'nnheader)
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(require 'nnmail)
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(defvar nnml-directory "~/Mail/"
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"Mail spool directory.")
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(defvar nnml-active-file (concat nnml-directory "active")
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"Mail active file.")
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(defvar nnml-newsgroups-file (concat nnml-directory "newsgroups")
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"Mail newsgroups description file.")
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(defvar nnml-get-new-mail t
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"If non-nil, nnml will check the incoming mail file and split the mail.")
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(defvar nnml-nov-is-evil nil
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"If non-nil, Gnus will never generate and use nov databases for mail groups.
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Using nov databases will speed up header fetching considerably.
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This variable shouldn't be flipped much. If you have, for some reason,
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set this to t, and want to set it to nil again, you should always run
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the `nnml-generate-nov-databases' command. The function will go
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through all nnml directories and generate nov databases for them
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all. This may very well take some time.")
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(defvar nnml-prepare-save-mail-hook nil
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"Hook run narrowed to an article before saving.")
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(defconst nnml-version "nnml 1.0"
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"nnml version.")
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(defvar nnml-nov-file-name ".overview")
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(defvar nnml-current-directory nil)
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(defvar nnml-status-string "")
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(defvar nnml-nov-buffer-alist nil)
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(defvar nnml-group-alist nil)
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(defvar nnml-active-timestamp nil)
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;; Server variables.
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(defvar nnml-current-server nil)
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(defvar nnml-server-alist nil)
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(defvar nnml-server-variables
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(list
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(list 'nnml-directory nnml-directory)
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(list 'nnml-active-file nnml-active-file)
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(list 'nnml-newsgroups-file nnml-newsgroups-file)
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(list 'nnml-get-new-mail nnml-get-new-mail)
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(list 'nnml-nov-is-evil nnml-nov-is-evil)
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(list 'nnml-nov-file-name nnml-nov-file-name)
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'(nnml-current-directory nil)
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'(nnml-status-string "")
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'(nnml-nov-buffer-alist nil)
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'(nnml-group-alist nil)
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'(nnml-active-timestamp nil)))
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;;; Interface functions.
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(defun nnml-retrieve-headers (sequence &optional newsgroup server)
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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 ((file nil)
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(number (length sequence))
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(count 0)
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beg article)
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(if (stringp (car sequence))
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'headers
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(nnml-possibly-change-directory newsgroup)
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(if (nnml-retrieve-headers-with-nov sequence)
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'nov
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(while sequence
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(setq article (car sequence))
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(setq file
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(concat nnml-current-directory (int-to-string article)))
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(if (and (file-exists-p file)
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(not (file-directory-p file)))
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(progn
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(insert (format "221 %d Article retrieved.\n" article))
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(setq beg (point))
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(nnheader-insert-head file)
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(goto-char beg)
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(if (search-forward "\n\n" nil t)
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(forward-char -1)
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(goto-char (point-max))
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(insert "\n\n"))
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(insert ".\n")
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(delete-region (point) (point-max))))
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(setq sequence (cdr sequence))
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(setq count (1+ count))
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(and (numberp nnmail-large-newsgroup)
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(> number nnmail-large-newsgroup)
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(zerop (% count 20))
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gnus-verbose-backends
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(message "nnml: Receiving headers... %d%%"
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(/ (* count 100) number))))
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(and (numberp nnmail-large-newsgroup)
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(> number nnmail-large-newsgroup)
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gnus-verbose-backends
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(message "nnml: Receiving headers...done"))
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;; Fold continuation lines.
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(goto-char (point-min))
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(while (re-search-forward "\\(\r?\n[ \t]+\\)+" nil t)
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(replace-match " " t t))
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'headers)))))
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(defun nnml-open-server (server &optional defs)
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(nnheader-init-server-buffer)
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(if (equal server nnml-current-server)
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t
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(if nnml-current-server
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(setq nnml-server-alist
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(cons (list nnml-current-server
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(nnheader-save-variables nnml-server-variables))
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nnml-server-alist)))
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(let ((state (assoc server nnml-server-alist)))
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(if state
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(progn
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(nnheader-restore-variables (nth 1 state))
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(setq nnml-server-alist (delq state nnml-server-alist)))
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(nnheader-set-init-variables nnml-server-variables defs)))
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(setq nnml-current-server server)))
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(defun nnml-close-server (&optional server)
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t)
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(defun nnml-server-opened (&optional server)
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(and (equal server nnml-current-server)
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nntp-server-buffer
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(buffer-name nntp-server-buffer)))
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(defun nnml-status-message (&optional server)
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nnml-status-string)
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(defun nnml-request-article (id &optional newsgroup server buffer)
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(nnml-possibly-change-directory newsgroup)
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(let ((file (if (stringp id)
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nil
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(concat nnml-current-directory (int-to-string id))))
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(nntp-server-buffer (or buffer nntp-server-buffer)))
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(if (and (stringp file)
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(file-exists-p file)
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(not (file-directory-p file)))
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(save-excursion
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(nnmail-find-file file)))))
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(defun nnml-request-group (group &optional server dont-check)
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(if (not (nnml-possibly-change-directory group))
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(progn
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(setq nnml-status-string "Invalid group (no such directory)")
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nil)
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(if dont-check
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t
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(nnml-get-new-mail group)
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(nnmail-activate 'nnml)
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(let ((active (nth 1 (assoc group nnml-group-alist))))
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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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(if (not active)
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()
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(insert (format "211 %d %d %d %s\n"
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(max (1+ (- (cdr active) (car active))) 0)
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(car active) (cdr active) group))
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t))))))
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(defun nnml-close-group (group &optional server)
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t)
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(defun nnml-request-close ()
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(setq nnml-current-server nil)
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(setq nnml-server-alist nil)
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t)
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(defun nnml-request-create-group (group &optional server)
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(nnmail-activate 'nnml)
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(or (assoc group nnml-group-alist)
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(let (active)
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(setq nnml-group-alist (cons (list group (setq active (cons 1 0)))
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nnml-group-alist))
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(nnml-possibly-create-directory group)
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(nnml-possibly-change-directory group)
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(let ((articles (mapcar
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(lambda (file)
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(string-to-int file))
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(directory-files
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nnml-current-directory nil "^[0-9]+$"))))
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(and articles
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(progn
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(setcar active (apply 'min articles))
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(setcdr active (apply 'max articles)))))
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(nnmail-save-active nnml-group-alist nnml-active-file)))
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t)
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(defun nnml-request-list (&optional server)
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(if server (nnml-get-new-mail))
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(save-excursion
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(nnmail-find-file nnml-active-file)
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(setq nnml-group-alist (nnmail-get-active))))
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(defun nnml-request-newgroups (date &optional server)
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(nnml-request-list server))
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(defun nnml-request-list-newsgroups (&optional server)
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(save-excursion
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(nnmail-find-file nnml-newsgroups-file)))
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(defun nnml-request-post (&optional server)
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(mail-send-and-exit nil))
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(defalias 'nnml-request-post-buffer 'nnmail-request-post-buffer)
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(defun nnml-request-expire-articles (articles newsgroup &optional server force)
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(nnml-possibly-change-directory newsgroup)
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(let* ((days (or (and nnmail-expiry-wait-function
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(funcall nnmail-expiry-wait-function newsgroup))
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nnmail-expiry-wait))
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(active-articles
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(mapcar
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(function
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(lambda (name)
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(string-to-int name)))
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(directory-files nnml-current-directory nil "^[0-9]+$" t)))
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(max-article (and active-articles (apply 'max active-articles)))
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(is-old t)
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article rest mod-time)
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(nnmail-activate 'nnml)
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(while (and articles is-old)
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(setq article (concat nnml-current-directory
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(int-to-string (car articles))))
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(if (setq mod-time (nth 5 (file-attributes article)))
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(if (and (or (not nnmail-keep-last-article)
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(not max-article)
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(not (= (car articles) max-article)))
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(or force
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(and (not (equal mod-time '(0 0)))
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(setq is-old
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(> (nnmail-days-between
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(current-time-string)
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(current-time-string mod-time))
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days)))))
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(progn
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(and gnus-verbose-backends
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(message "Deleting article %s..." article))
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(condition-case ()
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(delete-file article)
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(file-error
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(setq rest (cons (car articles) rest))))
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(setq active-articles (delq (car articles) active-articles))
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(nnml-nov-delete-article newsgroup (car articles)))
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(setq rest (cons (car articles) rest))))
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(setq articles (cdr articles)))
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(let ((active (nth 1 (assoc newsgroup nnml-group-alist))))
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(and active
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(setcar active (or (and active-articles
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(apply 'min active-articles))
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0)))
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(nnmail-save-active nnml-group-alist nnml-active-file))
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(nnml-save-nov)
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(message "")
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(nconc rest articles)))
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(defun nnml-request-move-article
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(article group server accept-form &optional last)
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(let ((buf (get-buffer-create " *nnml move*"))
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result)
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(and
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(nnml-request-article article group server)
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(save-excursion
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(set-buffer buf)
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(insert-buffer-substring nntp-server-buffer)
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(setq result (eval accept-form))
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(kill-buffer (current-buffer))
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result)
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(progn
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(condition-case ()
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(delete-file (concat nnml-current-directory
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(int-to-string article)))
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(file-error nil))
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(nnml-nov-delete-article group article)
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(and last (nnml-save-nov))))
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result))
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(defun nnml-request-accept-article (group &optional last)
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(let (result)
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(if (stringp group)
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(and
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(nnmail-activate 'nnml)
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;; We trick the choosing function into believing that only one
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;; group is available.
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(let ((nnmail-split-methods (list (list group ""))))
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(setq result (car (nnml-save-mail))))
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(progn
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(nnmail-save-active nnml-group-alist nnml-active-file)
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(and last (nnml-save-nov))))
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(and
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(nnmail-activate 'nnml)
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(setq result (car (nnml-save-mail)))
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(progn
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(nnmail-save-active nnml-group-alist nnml-active-file)
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(and last (nnml-save-nov)))))
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result))
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(defun nnml-request-replace-article (article group buffer)
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(nnml-possibly-change-directory group)
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(save-excursion
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(set-buffer buffer)
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(nnml-possibly-create-directory group)
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(if (not (condition-case ()
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(progn
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(write-region (point-min) (point-max)
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(concat nnml-current-directory
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(int-to-string article))
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nil (if gnus-verbose-backends nil 'nomesg))
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t)
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(error nil)))
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()
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(let ((chars (nnmail-insert-lines))
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(art (concat (int-to-string article) "\t"))
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nov-line)
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(setq nov-line (nnml-make-nov-line chars))
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;; Replace the NOV line in the NOV file.
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(save-excursion
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(set-buffer (nnml-open-nov group))
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(goto-char (point-min))
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(if (or (looking-at art)
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(search-forward (concat "\n" art) nil t))
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;; Delete the old NOV line.
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(delete-region (progn (beginning-of-line) (point))
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(progn (forward-line 1) (point)))
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;; The line isn't here, so we have to find out where
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;; we should insert it. (This situation should never
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;; occur, but one likes to make sure...)
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(while (and (looking-at "[0-9]+\t")
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(< (string-to-int
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(buffer-substring
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(match-beginning 0) (match-end 0)))
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article)
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(zerop (forward-line 1)))))
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(beginning-of-line)
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(insert (int-to-string article) nov-line)
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(nnml-save-nov)
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t)))))
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;;; Internal functions
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(defun nnml-retrieve-headers-with-nov (articles)
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(if (or gnus-nov-is-evil nnml-nov-is-evil)
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nil
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(let ((first (car articles))
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(last (progn (while (cdr articles) (setq articles (cdr articles)))
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(car articles)))
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(nov (concat nnml-current-directory nnml-nov-file-name)))
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(if (file-exists-p nov)
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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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(insert-file-contents nov)
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(goto-char (point-min))
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(while (and (not (eobp)) (< first (read (current-buffer))))
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(forward-line 1))
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(beginning-of-line)
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(if (not (eobp)) (delete-region 1 (point)))
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(while (and (not (eobp)) (>= last (read (current-buffer))))
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(forward-line 1))
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(beginning-of-line)
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(if (not (eobp)) (delete-region (point) (point-max)))
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t)))))
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(defun nnml-possibly-change-directory (newsgroup &optional force)
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(if newsgroup
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(let ((pathname (nnmail-article-pathname newsgroup nnml-directory)))
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(and (or force (file-directory-p pathname))
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(setq nnml-current-directory pathname)))
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t))
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(defun nnml-possibly-create-directory (group)
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(let (dir dirs)
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(setq dir (nnmail-article-pathname group nnml-directory))
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(while (not (file-directory-p dir))
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(setq dirs (cons dir dirs))
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(setq dir (file-name-directory (directory-file-name dir))))
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(while dirs
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(make-directory (directory-file-name (car dirs)))
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(and gnus-verbose-backends
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(message "Creating mail directory %s" (car dirs)))
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(setq dirs (cdr dirs)))))
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(defun nnml-save-mail ()
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"Called narrowed to an article."
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(let ((group-art (nreverse (nnmail-article-group 'nnml-active-number)))
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chars nov-line)
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(setq chars (nnmail-insert-lines))
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(nnmail-insert-xref group-art)
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(run-hooks 'nnml-prepare-save-mail-hook)
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(goto-char (point-min))
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(while (looking-at "From ")
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(replace-match "X-From-Line: ")
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(forward-line 1))
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;; We save the article in all the newsgroups it belongs in.
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(let ((ga group-art)
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first)
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(while ga
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(nnml-possibly-create-directory (car (car ga)))
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(let ((file (concat (nnmail-article-pathname
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(car (car ga)) nnml-directory)
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(int-to-string (cdr (car ga))))))
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(if first
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;; It was already saved, so we just make a hard link.
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(add-name-to-file first file t)
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;; Save the article.
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(write-region (point-min) (point-max) file nil
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(if gnus-verbose-backends nil 'nomesg))
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(setq first file)))
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(setq ga (cdr ga))))
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;; Generate a nov line for this article. We generate the nov
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;; line after saving, because nov generation destroys the
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;; header.
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(setq nov-line (nnml-make-nov-line chars))
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;; Output the nov line to all nov databases that should have it.
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(let ((ga group-art))
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(while ga
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(nnml-add-nov (car (car ga)) (cdr (car ga)) nov-line)
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(setq ga (cdr ga))))
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group-art))
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(defun nnml-active-number (group)
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"Compute the next article number in GROUP."
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(let ((active (car (cdr (assoc group nnml-group-alist)))))
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;; The group wasn't known to nnml, so we just create an active
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;; entry for it.
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(or active
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(progn
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(setq active (cons 1 0))
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(setq nnml-group-alist (cons (list group active) nnml-group-alist))))
|
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(setcdr active (1+ (cdr active)))
|
||
(while (file-exists-p
|
||
(concat (nnmail-article-pathname group nnml-directory)
|
||
(int-to-string (cdr active))))
|
||
(setcdr active (1+ (cdr active))))
|
||
(cdr active)))
|
||
|
||
(defun nnml-get-new-mail (&optional group)
|
||
"Read new incoming mail."
|
||
(let* ((spools (nnmail-get-spool-files group))
|
||
(group-in group)
|
||
incoming incomings)
|
||
(if (or (not nnml-get-new-mail) (not nnmail-spool-file))
|
||
()
|
||
;; We first activate all the groups.
|
||
(nnmail-activate 'nnml)
|
||
;; The we go through all the existing spool files and split the
|
||
;; mail from each.
|
||
(while spools
|
||
(and
|
||
(file-exists-p (car spools))
|
||
(> (nth 7 (file-attributes (car spools))) 0)
|
||
(progn
|
||
(and gnus-verbose-backends
|
||
(message "nnml: Reading incoming mail..."))
|
||
(if (not (setq incoming
|
||
(nnmail-move-inbox
|
||
(car spools) (concat nnml-directory "Incoming"))))
|
||
()
|
||
(setq group (nnmail-get-split-group (car spools) group-in))
|
||
(nnmail-split-incoming incoming 'nnml-save-mail nil group)
|
||
(setq incomings (cons incoming incomings)))))
|
||
(setq spools (cdr spools)))
|
||
;; If we did indeed read any incoming spools, we save all info.
|
||
(if incoming
|
||
(progn
|
||
(nnmail-save-active nnml-group-alist nnml-active-file)
|
||
(nnml-save-nov)
|
||
(run-hooks 'nnmail-read-incoming-hook)
|
||
(and gnus-verbose-backends
|
||
(message "nnml: Reading incoming mail...done"))))
|
||
(while incomings
|
||
(setq incoming (car incomings))
|
||
(and nnmail-delete-incoming
|
||
(file-exists-p incoming)
|
||
(file-writable-p incoming)
|
||
(delete-file incoming))
|
||
(setq incomings (cdr incomings))))))
|
||
|
||
|
||
(defun nnml-add-nov (group article line)
|
||
"Add a nov line for the GROUP base."
|
||
(save-excursion
|
||
(set-buffer (nnml-open-nov group))
|
||
(goto-char (point-max))
|
||
(insert (int-to-string article) line)))
|
||
|
||
(defsubst nnml-header-value ()
|
||
(buffer-substring (match-end 0) (save-excursion (end-of-line) (point))))
|
||
|
||
(defun nnml-make-nov-line (chars)
|
||
"Create a nov from the current headers."
|
||
(let ((case-fold-search t)
|
||
subject from date id references lines xref in-reply-to char)
|
||
(save-excursion
|
||
(save-restriction
|
||
(goto-char (point-min))
|
||
(narrow-to-region
|
||
(point)
|
||
(1- (or (search-forward "\n\n" nil t) (point-max))))
|
||
;; Fold continuation lines.
|
||
(goto-char (point-min))
|
||
(while (re-search-forward "\\(\r?\n[ \t]+\\)+" nil t)
|
||
(replace-match " " t t))
|
||
(subst-char-in-region (point-min) (point-max) ?\t ? )
|
||
;; [number subject from date id references chars lines xref]
|
||
(save-excursion
|
||
(goto-char (point-min))
|
||
(while (re-search-forward "^\\(from\\|subject\\|message-id\\|date\\|lines\\|xref\\|references\\|in-reply-to\\): "
|
||
nil t)
|
||
(beginning-of-line)
|
||
(setq char (downcase (following-char)))
|
||
(cond
|
||
((eq char ?s)
|
||
(setq subject (nnml-header-value)))
|
||
((eq char ?f)
|
||
(setq from (nnml-header-value)))
|
||
((eq char ?x)
|
||
(setq xref (nnml-header-value)))
|
||
((eq char ?l)
|
||
(setq lines (nnml-header-value)))
|
||
((eq char ?d)
|
||
(setq date (nnml-header-value)))
|
||
((eq char ?m)
|
||
(setq id (setq id (nnml-header-value))))
|
||
((eq char ?r)
|
||
(setq references (nnml-header-value)))
|
||
((eq char ?i)
|
||
(setq in-reply-to (nnml-header-value))))
|
||
(forward-line 1))
|
||
|
||
(and (not references)
|
||
in-reply-to
|
||
(string-match "<[^>]+>" in-reply-to)
|
||
(setq references
|
||
(substring in-reply-to (match-beginning 0)
|
||
(match-end 0)))))
|
||
;; [number subject from date id references chars lines xref]
|
||
(format "\t%s\t%s\t%s\t%s\t%s\t%d\t%s\t%s\t\n"
|
||
(or subject "(none)")
|
||
(or from "(nobody)") (or date "")
|
||
(or id (concat "nnml-dummy-id-"
|
||
(mapconcat
|
||
(lambda (time) (int-to-string time))
|
||
(current-time) "-")))
|
||
(or references "")
|
||
(or chars 0) (or lines "0") (or xref ""))))))
|
||
|
||
(defun nnml-open-nov (group)
|
||
(or (cdr (assoc group nnml-nov-buffer-alist))
|
||
(let ((buffer (find-file-noselect
|
||
(concat (nnmail-article-pathname
|
||
group nnml-directory) nnml-nov-file-name))))
|
||
(save-excursion
|
||
(set-buffer buffer)
|
||
(buffer-disable-undo (current-buffer)))
|
||
(setq nnml-nov-buffer-alist
|
||
(cons (cons group buffer) nnml-nov-buffer-alist))
|
||
buffer)))
|
||
|
||
(defun nnml-save-nov ()
|
||
(save-excursion
|
||
(while nnml-nov-buffer-alist
|
||
(if (buffer-name (cdr (car nnml-nov-buffer-alist)))
|
||
(progn
|
||
(set-buffer (cdr (car nnml-nov-buffer-alist)))
|
||
(and (buffer-modified-p)
|
||
(write-region
|
||
1 (point-max) (buffer-file-name) nil 'nomesg))
|
||
(set-buffer-modified-p nil)
|
||
(kill-buffer (current-buffer))))
|
||
(setq nnml-nov-buffer-alist (cdr nnml-nov-buffer-alist)))))
|
||
|
||
;;;###autoload
|
||
(defun nnml-generate-nov-databases (dir)
|
||
"Generate nov databases in all nnml mail newsgroups."
|
||
(interactive
|
||
(progn
|
||
(setq nnml-group-alist nil)
|
||
(list nnml-directory)))
|
||
(nnml-open-server (or nnml-current-server ""))
|
||
(let ((dirs (directory-files dir t nil t)))
|
||
(while dirs
|
||
(if (and (not (string-match "/\\.\\.$" (car dirs)))
|
||
(not (string-match "/\\.$" (car dirs)))
|
||
(file-directory-p (car dirs)))
|
||
(nnml-generate-nov-databases (car dirs)))
|
||
(setq dirs (cdr dirs))))
|
||
(let ((files (sort
|
||
(mapcar
|
||
(function
|
||
(lambda (name)
|
||
(string-to-int name)))
|
||
(directory-files dir nil "^[0-9]+$" t))
|
||
(function <)))
|
||
(nov (concat dir "/" nnml-nov-file-name))
|
||
(nov-buffer (get-buffer-create "*nov*"))
|
||
nov-line chars)
|
||
(if files
|
||
(setq nnml-group-alist
|
||
(cons (list (nnmail-replace-chars-in-string
|
||
(substring (expand-file-name dir)
|
||
(length (expand-file-name
|
||
nnml-directory)))
|
||
?/ ?.)
|
||
(cons (car files)
|
||
(let ((f files))
|
||
(while (cdr f) (setq f (cdr f)))
|
||
(car f))))
|
||
nnml-group-alist)))
|
||
(if files
|
||
(save-excursion
|
||
(set-buffer nntp-server-buffer)
|
||
(if (file-exists-p nov)
|
||
(delete-file nov))
|
||
(save-excursion
|
||
(set-buffer nov-buffer)
|
||
(buffer-disable-undo (current-buffer))
|
||
(erase-buffer))
|
||
(while files
|
||
(erase-buffer)
|
||
(insert-file-contents (concat dir "/" (int-to-string (car files))))
|
||
(goto-char (point-min))
|
||
(narrow-to-region 1 (save-excursion (search-forward "\n\n" nil t)
|
||
(setq chars (- (point-max)
|
||
(point)))
|
||
(point)))
|
||
(if (not (= 0 chars)) ; none of them empty files...
|
||
(progn
|
||
(setq nov-line (nnml-make-nov-line chars))
|
||
(save-excursion
|
||
(set-buffer nov-buffer)
|
||
(goto-char (point-max))
|
||
(insert (int-to-string (car files)) nov-line))))
|
||
(widen)
|
||
(setq files (cdr files)))
|
||
(save-excursion
|
||
(set-buffer nov-buffer)
|
||
(write-region 1 (point-max) (expand-file-name nov) nil
|
||
'nomesg)
|
||
(kill-buffer (current-buffer)))))
|
||
(nnmail-save-active nnml-group-alist nnml-active-file)))
|
||
|
||
(defun nnml-nov-delete-article (group article)
|
||
(save-excursion
|
||
(set-buffer (nnml-open-nov group))
|
||
(goto-char (point-min))
|
||
(if (re-search-forward (concat "^" (int-to-string article) "\t") nil t)
|
||
(delete-region (match-beginning 0) (progn (forward-line 1) (point))))
|
||
t))
|
||
|
||
(provide 'nnml)
|
||
|
||
;;; nnml.el ends here
|