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authorLars Magne Ingebrigtsen <larsi@gnus.org>1995-11-04 03:54:42 +0000
committerLars Magne Ingebrigtsen <larsi@gnus.org>1995-11-04 03:54:42 +0000
commit6b76bab63643f58d366b3f0df1623bb9200d89b8 (patch)
tree5f4a6290051a012b4b91c032889342879ca76dbe /lisp/nnml.el
parent56ec0cbb180cf6068a00c1eca7f1a5cd73f0b753 (diff)
downloademacs-6b76bab63643f58d366b3f0df1623bb9200d89b8.tar.gz
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+;;; nnml.el --- mail spool access for Gnus
+;; Copyright (C) 1995 Free Software Foundation, Inc.
+
+;; Author: Lars Magne Ingebrigtsen <larsi@ifi.uio.no>
+;; Masanobu UMEDA <umerin@flab.flab.fujitsu.junet>
+;; Keywords: news, mail
+
+;; 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, 675 Mass Ave, Cambridge, MA 02139, USA.
+
+;;; Commentary:
+
+;; Based on nnspool.el by Masanobu UMEDA <umerin@flab.flab.fujitsu.junet>.
+;; For an overview of what the interface functions do, please see the
+;; Gnus sources.
+
+;;; Code:
+
+(require 'nnheader)
+(require 'nnmail)
+
+(defvar nnml-directory "~/Mail/"
+ "Mail spool directory.")
+
+(defvar nnml-active-file (concat nnml-directory "active")
+ "Mail active file.")
+
+(defvar nnml-newsgroups-file (concat nnml-directory "newsgroups")
+ "Mail newsgroups description file.")
+
+(defvar nnml-get-new-mail t
+ "If non-nil, nnml will check the incoming mail file and split the mail.")
+
+(defvar nnml-nov-is-evil nil
+ "If non-nil, Gnus will never generate and use nov databases for mail groups.
+Using nov databases will speed up header fetching considerably.
+This variable shouldn't be flipped much. If you have, for some reason,
+set this to t, and want to set it to nil again, you should always run
+the `nnml-generate-nov-databases' command. The function will go
+through all nnml directories and generate nov databases for them
+all. This may very well take some time.")
+
+(defvar nnml-prepare-save-mail-hook nil
+ "Hook run narrowed to an article before saving.")
+
+
+
+(defconst nnml-version "nnml 1.0"
+ "nnml version.")
+
+(defvar nnml-nov-file-name ".overview")
+
+(defvar nnml-current-directory nil)
+(defvar nnml-status-string "")
+(defvar nnml-nov-buffer-alist nil)
+(defvar nnml-group-alist nil)
+(defvar nnml-active-timestamp nil)
+
+
+
+;; Server variables.
+
+(defvar nnml-current-server nil)
+(defvar nnml-server-alist nil)
+(defvar nnml-server-variables
+ (list
+ (list 'nnml-directory nnml-directory)
+ (list 'nnml-active-file nnml-active-file)
+ (list 'nnml-newsgroups-file nnml-newsgroups-file)
+ (list 'nnml-get-new-mail nnml-get-new-mail)
+ (list 'nnml-nov-is-evil nnml-nov-is-evil)
+ (list 'nnml-nov-file-name nnml-nov-file-name)
+ '(nnml-current-directory nil)
+ '(nnml-status-string "")
+ '(nnml-nov-buffer-alist nil)
+ '(nnml-group-alist nil)
+ '(nnml-active-timestamp nil)))
+
+
+
+;;; Interface functions.
+
+(defun nnml-retrieve-headers (sequence &optional newsgroup server)
+ (save-excursion
+ (set-buffer nntp-server-buffer)
+ (erase-buffer)
+ (let ((file nil)
+ (number (length sequence))
+ (count 0)
+ beg article)
+ (if (stringp (car sequence))
+ 'headers
+ (nnml-possibly-change-directory newsgroup)
+ (if (nnml-retrieve-headers-with-nov sequence)
+ 'nov
+ (while sequence
+ (setq article (car sequence))
+ (setq file
+ (concat nnml-current-directory (int-to-string article)))
+ (if (and (file-exists-p file)
+ (not (file-directory-p file)))
+ (progn
+ (insert (format "221 %d Article retrieved.\n" article))
+ (setq beg (point))
+ (nnheader-insert-head file)
+ (goto-char beg)
+ (if (search-forward "\n\n" nil t)
+ (forward-char -1)
+ (goto-char (point-max))
+ (insert "\n\n"))
+ (insert ".\n")
+ (delete-region (point) (point-max))))
+ (setq sequence (cdr sequence))
+ (setq count (1+ count))
+ (and (numberp nnmail-large-newsgroup)
+ (> number nnmail-large-newsgroup)
+ (zerop (% count 20))
+ gnus-verbose-backends
+ (message "nnml: Receiving headers... %d%%"
+ (/ (* count 100) number))))
+
+ (and (numberp nnmail-large-newsgroup)
+ (> number nnmail-large-newsgroup)
+ gnus-verbose-backends
+ (message "nnml: Receiving headers...done"))
+
+ ;; Fold continuation lines.
+ (goto-char (point-min))
+ (while (re-search-forward "\\(\r?\n[ \t]+\\)+" nil t)
+ (replace-match " " t t))
+ 'headers)))))
+
+(defun nnml-open-server (server &optional defs)
+ (nnheader-init-server-buffer)
+ (if (equal server nnml-current-server)
+ t
+ (if nnml-current-server
+ (setq nnml-server-alist
+ (cons (list nnml-current-server
+ (nnheader-save-variables nnml-server-variables))
+ nnml-server-alist)))
+ (let ((state (assoc server nnml-server-alist)))
+ (if state
+ (progn
+ (nnheader-restore-variables (nth 1 state))
+ (setq nnml-server-alist (delq state nnml-server-alist)))
+ (nnheader-set-init-variables nnml-server-variables defs)))
+ (setq nnml-current-server server)))
+
+(defun nnml-close-server (&optional server)
+ t)
+
+(defun nnml-server-opened (&optional server)
+ (and (equal server nnml-current-server)
+ nntp-server-buffer
+ (buffer-name nntp-server-buffer)))
+
+(defun nnml-status-message (&optional server)
+ nnml-status-string)
+
+(defun nnml-request-article (id &optional newsgroup server buffer)
+ (nnml-possibly-change-directory newsgroup)
+ (let ((file (if (stringp id)
+ nil
+ (concat nnml-current-directory (int-to-string id))))
+ (nntp-server-buffer (or buffer nntp-server-buffer)))
+ (if (and (stringp file)
+ (file-exists-p file)
+ (not (file-directory-p file)))
+ (save-excursion
+ (nnmail-find-file file)))))
+
+(defun nnml-request-group (group &optional server dont-check)
+ (if (not (nnml-possibly-change-directory group))
+ (progn
+ (setq nnml-status-string "Invalid group (no such directory)")
+ nil)
+ (if dont-check
+ t
+ (nnml-get-new-mail group)
+ (nnmail-activate 'nnml)
+ (let ((active (nth 1 (assoc group nnml-group-alist))))
+ (save-excursion
+ (set-buffer nntp-server-buffer)
+ (erase-buffer)
+ (if (not active)
+ ()
+ (insert (format "211 %d %d %d %s\n"
+ (max (1+ (- (cdr active) (car active))) 0)
+ (car active) (cdr active) group))
+ t))))))
+
+(defun nnml-close-group (group &optional server)
+ t)
+
+(defun nnml-request-close ()
+ (setq nnml-current-server nil)
+ (setq nnml-server-alist nil)
+ t)
+
+(defun nnml-request-create-group (group &optional server)
+ (nnmail-activate 'nnml)
+ (or (assoc group nnml-group-alist)
+ (let (active)
+ (setq nnml-group-alist (cons (list group (setq active (cons 1 0)))
+ nnml-group-alist))
+ (nnml-possibly-create-directory group)
+ (nnml-possibly-change-directory group)
+ (let ((articles (mapcar
+ (lambda (file)
+ (string-to-int file))
+ (directory-files
+ nnml-current-directory nil "^[0-9]+$"))))
+ (and articles
+ (progn
+ (setcar active (apply 'min articles))
+ (setcdr active (apply 'max articles)))))
+ (nnmail-save-active nnml-group-alist nnml-active-file)))
+ t)
+
+(defun nnml-request-list (&optional server)
+ (if server (nnml-get-new-mail))
+ (save-excursion
+ (nnmail-find-file nnml-active-file)
+ (setq nnml-group-alist (nnmail-get-active))))
+
+(defun nnml-request-newgroups (date &optional server)
+ (nnml-request-list server))
+
+(defun nnml-request-list-newsgroups (&optional server)
+ (save-excursion
+ (nnmail-find-file nnml-newsgroups-file)))
+
+(defun nnml-request-post (&optional server)
+ (mail-send-and-exit nil))
+
+(defalias 'nnml-request-post-buffer 'nnmail-request-post-buffer)
+
+(defun nnml-request-expire-articles (articles newsgroup &optional server force)
+ (nnml-possibly-change-directory newsgroup)
+ (let* ((days (or (and nnmail-expiry-wait-function
+ (funcall nnmail-expiry-wait-function newsgroup))
+ nnmail-expiry-wait))
+ (active-articles
+ (mapcar
+ (function
+ (lambda (name)
+ (string-to-int name)))
+ (directory-files nnml-current-directory nil "^[0-9]+$" t)))
+ (max-article (and active-articles (apply 'max active-articles)))
+ (is-old t)
+ article rest mod-time)
+ (nnmail-activate 'nnml)
+
+ (while (and articles is-old)
+ (setq article (concat nnml-current-directory
+ (int-to-string (car articles))))
+ (if (setq mod-time (nth 5 (file-attributes article)))
+ (if (and (or (not nnmail-keep-last-article)
+ (not max-article)
+ (not (= (car articles) max-article)))
+ (or force
+ (and (not (equal mod-time '(0 0)))
+ (setq is-old
+ (> (nnmail-days-between
+ (current-time-string)
+ (current-time-string mod-time))
+ days)))))
+ (progn
+ (and gnus-verbose-backends
+ (message "Deleting article %s..." article))
+ (condition-case ()
+ (delete-file article)
+ (file-error
+ (setq rest (cons (car articles) rest))))
+ (setq active-articles (delq (car articles) active-articles))
+ (nnml-nov-delete-article newsgroup (car articles)))
+ (setq rest (cons (car articles) rest))))
+ (setq articles (cdr articles)))
+ (let ((active (nth 1 (assoc newsgroup nnml-group-alist))))
+ (and active
+ (setcar active (or (and active-articles
+ (apply 'min active-articles))
+ 0)))
+ (nnmail-save-active nnml-group-alist nnml-active-file))
+ (nnml-save-nov)
+ (message "")
+ (nconc rest articles)))
+
+(defun nnml-request-move-article
+ (article group server accept-form &optional last)
+ (let ((buf (get-buffer-create " *nnml move*"))
+ result)
+ (and
+ (nnml-request-article article group server)
+ (save-excursion
+ (set-buffer buf)
+ (insert-buffer-substring nntp-server-buffer)
+ (setq result (eval accept-form))
+ (kill-buffer (current-buffer))
+ result)
+ (progn
+ (condition-case ()
+ (delete-file (concat nnml-current-directory
+ (int-to-string article)))
+ (file-error nil))
+ (nnml-nov-delete-article group article)
+ (and last (nnml-save-nov))))
+ result))
+
+(defun nnml-request-accept-article (group &optional last)
+ (let (result)
+ (if (stringp group)
+ (and
+ (nnmail-activate 'nnml)
+ ;; We trick the choosing function into believing that only one
+ ;; group is availiable.
+ (let ((nnmail-split-methods (list (list group ""))))
+ (setq result (car (nnml-save-mail))))
+ (progn
+ (nnmail-save-active nnml-group-alist nnml-active-file)
+ (and last (nnml-save-nov))))
+ (and
+ (nnmail-activate 'nnml)
+ (setq result (car (nnml-save-mail)))
+ (progn
+ (nnmail-save-active nnml-group-alist nnml-active-file)
+ (and last (nnml-save-nov)))))
+ result))
+
+(defun nnml-request-replace-article (article group buffer)
+ (nnml-possibly-change-directory group)
+ (save-excursion
+ (set-buffer buffer)
+ (nnml-possibly-create-directory group)
+ (if (not (condition-case ()
+ (progn
+ (write-region (point-min) (point-max)
+ (concat nnml-current-directory
+ (int-to-string article))
+ nil (if gnus-verbose-backends nil 'nomesg))
+ t)
+ (error nil)))
+ ()
+ (let ((chars (nnmail-insert-lines))
+ (art (concat (int-to-string article) "\t"))
+ nov-line)
+ (setq nov-line (nnml-make-nov-line chars))
+ ;; Replace the NOV line in the NOV file.
+ (save-excursion
+ (set-buffer (nnml-open-nov group))
+ (goto-char (point-min))
+ (if (or (looking-at art)
+ (search-forward (concat "\n" art) nil t))
+ ;; Delete the old NOV line.
+ (delete-region (progn (beginning-of-line) (point))
+ (progn (forward-line 1) (point)))
+ ;; The line isn't here, so we have to find out where
+ ;; we should insert it. (This situation should never
+ ;; occur, but one likes to make sure...)
+ (while (and (looking-at "[0-9]+\t")
+ (< (string-to-int
+ (buffer-substring
+ (match-beginning 0) (match-end 0)))
+ article)
+ (zerop (forward-line 1)))))
+ (beginning-of-line)
+ (insert (int-to-string article) nov-line)
+ (nnml-save-nov)
+ t)))))
+
+
+
+;;; Internal functions
+
+(defun nnml-retrieve-headers-with-nov (articles)
+ (if (or gnus-nov-is-evil nnml-nov-is-evil)
+ nil
+ (let ((first (car articles))
+ (last (progn (while (cdr articles) (setq articles (cdr articles)))
+ (car articles)))
+ (nov (concat nnml-current-directory nnml-nov-file-name)))
+ (if (file-exists-p nov)
+ (save-excursion
+ (set-buffer nntp-server-buffer)
+ (erase-buffer)
+ (insert-file-contents nov)
+ (goto-char (point-min))
+ (while (and (not (eobp)) (< first (read (current-buffer))))
+ (forward-line 1))
+ (beginning-of-line)
+ (if (not (eobp)) (delete-region 1 (point)))
+ (while (and (not (eobp)) (>= last (read (current-buffer))))
+ (forward-line 1))
+ (beginning-of-line)
+ (if (not (eobp)) (delete-region (point) (point-max)))
+ t)))))
+
+(defun nnml-possibly-change-directory (newsgroup &optional force)
+ (if newsgroup
+ (let ((pathname (nnmail-article-pathname newsgroup nnml-directory)))
+ (and (or force (file-directory-p pathname))
+ (setq nnml-current-directory pathname)))
+ t))
+
+(defun nnml-possibly-create-directory (group)
+ (let (dir dirs)
+ (setq dir (nnmail-article-pathname group nnml-directory))
+ (while (not (file-directory-p dir))
+ (setq dirs (cons dir dirs))
+ (setq dir (file-name-directory (directory-file-name dir))))
+ (while dirs
+ (make-directory (directory-file-name (car dirs)))
+ (and gnus-verbose-backends
+ (message "Creating mail directory %s" (car dirs)))
+ (setq dirs (cdr dirs)))))
+
+(defun nnml-save-mail ()
+ "Called narrowed to an article."
+ (let ((group-art (nreverse (nnmail-article-group 'nnml-active-number)))
+ chars nov-line)
+ (setq chars (nnmail-insert-lines))
+ (nnmail-insert-xref group-art)
+ (run-hooks 'nnml-prepare-save-mail-hook)
+ (goto-char (point-min))
+ (while (looking-at "From ")
+ (replace-match "X-From-Line: ")
+ (forward-line 1))
+ ;; We save the article in all the newsgroups it belongs in.
+ (let ((ga group-art)
+ first)
+ (while ga
+ (nnml-possibly-create-directory (car (car ga)))
+ (let ((file (concat (nnmail-article-pathname
+ (car (car ga)) nnml-directory)
+ (int-to-string (cdr (car ga))))))
+ (if first
+ ;; It was already saved, so we just make a hard link.
+ (add-name-to-file first file t)
+ ;; Save the article.
+ (write-region (point-min) (point-max) file nil
+ (if gnus-verbose-backends nil 'nomesg))
+ (setq first file)))
+ (setq ga (cdr ga))))
+ ;; Generate a nov line for this article. We generate the nov
+ ;; line after saving, because nov generation destroys the
+ ;; header.
+ (setq nov-line (nnml-make-nov-line chars))
+ ;; Output the nov line to all nov databases that should have it.
+ (let ((ga group-art))
+ (while ga
+ (nnml-add-nov (car (car ga)) (cdr (car ga)) nov-line)
+ (setq ga (cdr ga))))
+ group-art))
+
+(defun nnml-active-number (group)
+ "Compute the next article number in GROUP."
+ (let ((active (car (cdr (assoc group nnml-group-alist)))))
+ ;; The group wasn't known to nnml, so we just create an active
+ ;; entry for it.
+ (or active
+ (progn
+ (setq active (cons 1 0))
+ (setq nnml-group-alist (cons (list group active) nnml-group-alist))))
+ (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