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1180 lines
42 KiB
EmacsLisp
1180 lines
42 KiB
EmacsLisp
;;; nnfolder.el --- mail folder access for Gnus -*- lexical-binding: t; -*-
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;; Copyright (C) 1995-2023 Free Software Foundation, Inc.
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;; Author: Simon Josefsson <simon@josefsson.org>
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;; ShengHuo Zhu <zsh@cs.rochester.edu> (adding NOV)
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;; Scott Byer <byer@mv.us.adobe.com>
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;; Lars Magne Ingebrigtsen <larsi@gnus.org>
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;; Masanobu UMEDA <umerin@flab.flab.fujitsu.junet>
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;; Keywords: 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 3 of the License, or
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;; (at your option) 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. If not, see <https://www.gnu.org/licenses/>.
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;;; Commentary:
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;;; Code:
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(require 'nnheader)
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(require 'message)
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(require 'nnmail)
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(require 'nnoo)
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(require 'gnus)
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(require 'gnus-util)
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(require 'gnus-range)
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;; FIXME not explicitly used in this file.
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(autoload 'gnus-article-unpropagatable-p "gnus-sum")
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(nnoo-declare nnfolder)
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(defvoo nnfolder-directory (expand-file-name message-directory)
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"The name of the nnfolder directory.")
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(defvoo nnfolder-nov-directory nil
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"The name of the nnfolder NOV directory.
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If nil, `nnfolder-directory' is used.")
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(defvoo nnfolder-active-file
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(nnheader-concat nnfolder-directory "active")
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"The name of the active file.")
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;; I renamed this variable to something more in keeping with the general GNU
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;; style. -SLB
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(defvoo nnfolder-ignore-active-file nil
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"If non-nil, the active file is ignored.
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This causes nnfolder to do some extra work in order to determine the
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true active ranges of an mbox file. Note that the active file is
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still saved, but its values are not used. This costs some extra time
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when scanning an mbox when opening it.")
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(defvoo nnfolder-distrust-mbox nil
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"If non-nil, the folder will be distrusted.
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This means that nnfolder will not trust the user with respect to
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inserting unaccounted for mail in the middle of an mbox file. This
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can greatly slow down scans, which now must scan the entire file for
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unmarked messages. When nil, scans occur forward from the last marked
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message, a huge time saver for large mailboxes.")
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(defvoo nnfolder-newsgroups-file
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(concat (file-name-as-directory nnfolder-directory) "newsgroups")
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"Mail newsgroups description file.")
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(defvoo nnfolder-get-new-mail t
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"If non-nil, nnfolder will check the incoming mail file and split the mail.")
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(defvoo nnfolder-prepare-save-mail-hook nil
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"Hook run narrowed to an article before saving.")
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(defvoo nnfolder-save-buffer-hook nil
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"Hook run before saving the nnfolder mbox buffer.")
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(defvoo nnfolder-inhibit-expiry nil
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"If non-nil, inhibit expiry.")
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(defconst nnfolder-version "nnfolder 2.0"
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"nnfolder version.")
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(make-obsolete-variable 'nnfolder-version 'emacs-version "29.1")
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(defconst nnfolder-article-marker "X-Gnus-Article-Number: "
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"String used to demarcate what the article number for a message is.")
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(defvoo nnfolder-current-group nil)
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(defvoo nnfolder-current-buffer nil)
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(defvoo nnfolder-status-string "")
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(defvoo nnfolder-group-alist nil)
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(defvoo nnfolder-buffer-alist nil)
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(defvoo nnfolder-scantime-alist nil)
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(defvoo nnfolder-active-timestamp nil)
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(defvoo nnfolder-active-file-coding-system mm-text-coding-system)
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(defvoo nnfolder-active-file-coding-system-for-write
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nnmail-active-file-coding-system)
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(defvoo nnfolder-file-coding-system mm-text-coding-system)
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(defvoo nnfolder-file-coding-system-for-write nnheader-file-coding-system
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"Coding system for save nnfolder file.
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if nil, `nnfolder-file-coding-system' is used.") ; FIXME: fill-in the doc-string of this variable
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(defvoo nnfolder-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 `nnfolder-generate-active-file' command. The function will go
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through all nnfolder directories and generate nov databases for them
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all. This may very well take some time.")
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(defvoo nnfolder-nov-file-suffix ".nov")
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(defvoo nnfolder-nov-buffer-alist nil)
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(defvar nnfolder-nov-buffer-file-name nil)
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;;; Interface functions
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(nnoo-define-basics nnfolder)
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(deffoo nnfolder-retrieve-headers (articles &optional group server fetch-old)
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(with-current-buffer nntp-server-buffer
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(erase-buffer)
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(let (article start stop num)
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(nnfolder-possibly-change-group group server)
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(when nnfolder-current-buffer
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(set-buffer nnfolder-current-buffer)
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(goto-char (point-min))
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(if (stringp (car articles))
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'headers
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(if (nnfolder-retrieve-headers-with-nov articles fetch-old)
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'nov
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(setq articles (gnus-sorted-intersection
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;; Is ARTICLES sorted?
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(sort articles #'<)
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(nnfolder-existing-articles)))
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(while (setq article (pop articles))
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(set-buffer nnfolder-current-buffer)
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(cond ((nnfolder-goto-article article)
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(setq start (point))
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(setq stop (if (search-forward "\n\n" nil t)
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(1- (point))
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(point-max)))
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(set-buffer nntp-server-buffer)
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(insert (format "221 %d Article retrieved.\n" article))
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(insert-buffer-substring nnfolder-current-buffer
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start stop)
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(goto-char (point-max))
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(insert ".\n"))
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;; If we couldn't find this article, skip over ranges
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;; of missing articles so we don't search the whole file
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;; for each of them.
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((numberp article)
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(setq start (point))
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(and
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;; Check that we are either at BOF or after an
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;; article with a lower number. We do this so we
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;; won't be confused by out-of-order article numbers,
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;; as caused by active file bogosity.
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(cond
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((bobp))
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((search-backward (concat "\n" nnfolder-article-marker)
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nil t)
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(goto-char (match-end 0))
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(setq num (string-to-number
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(buffer-substring
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(point) (line-end-position))))
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(goto-char start)
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(< num article)))
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;; Check that we are before an article with a
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;; higher number.
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(search-forward (concat "\n" nnfolder-article-marker)
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nil t)
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(progn
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(setq num (string-to-number
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(buffer-substring
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(point) (line-end-position))))
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(> num article))
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;; Discard any article numbers before the one we're
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;; now looking at.
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(while (and articles
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(< (car articles) num))
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(setq articles (cdr articles))))
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(goto-char start))))
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(set-buffer nntp-server-buffer)
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(nnheader-fold-continuation-lines)
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'headers))))))
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(deffoo nnfolder-open-server (server &optional defs)
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(nnoo-change-server 'nnfolder server defs)
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(nnmail-activate 'nnfolder t)
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(gnus-make-directory nnfolder-directory)
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(unless (or gnus-nov-is-evil nnfolder-nov-is-evil)
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(and nnfolder-nov-directory
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(gnus-make-directory nnfolder-nov-directory)))
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(cond
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((not (file-exists-p nnfolder-directory))
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(nnfolder-close-server)
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(nnheader-report 'nnfolder "Couldn't create directory: %s"
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nnfolder-directory))
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((not (file-directory-p (file-truename nnfolder-directory)))
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(nnfolder-close-server)
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(nnheader-report 'nnfolder "Not a directory: %s" nnfolder-directory))
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(t
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(nnmail-activate 'nnfolder)
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(nnheader-report 'nnfolder "Opened server %s using directory %s"
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server nnfolder-directory)
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t)))
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(deffoo nnfolder-request-close ()
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(let ((alist nnfolder-buffer-alist))
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(while alist
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(nnfolder-close-group (caar alist) nil t)
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(setq alist (cdr alist))))
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(nnoo-close-server 'nnfolder)
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(setq nnfolder-buffer-alist nil
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nnfolder-group-alist nil))
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(deffoo nnfolder-request-article (article &optional group server buffer)
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(nnfolder-possibly-change-group group server)
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(with-current-buffer nnfolder-current-buffer
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(goto-char (point-min))
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(when (nnfolder-goto-article article)
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(let (start stop)
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(setq start (point))
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(forward-line 1)
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(unless (and (nnmail-search-unix-mail-delim)
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(forward-line -1))
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(goto-char (point-max)))
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(setq stop (point))
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(let ((nntp-server-buffer (or buffer nntp-server-buffer)))
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(set-buffer nntp-server-buffer)
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(erase-buffer)
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(insert-buffer-substring nnfolder-current-buffer start stop)
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(goto-char (point-min))
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(while (looking-at "From ")
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(delete-char 5)
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(insert "X-From-Line: ")
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(forward-line 1))
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(if (numberp article)
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(cons nnfolder-current-group article)
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(goto-char (point-min))
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(cons nnfolder-current-group
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(if (search-forward (concat "\n" nnfolder-article-marker)
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nil t)
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(string-to-number (buffer-substring
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(point) (line-end-position)))
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-1))))))))
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(deffoo nnfolder-request-group (group &optional server dont-check _info)
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(nnfolder-possibly-change-group group server t)
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(save-excursion
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(cond ((not (assoc group nnfolder-group-alist))
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(nnheader-report 'nnfolder "No such group: %s" group))
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((file-directory-p (nnfolder-group-pathname group))
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(nnheader-report 'nnfolder "%s is a directory"
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(file-name-as-directory
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(let ((nnmail-pathname-coding-system nil))
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(nnfolder-group-pathname group)))))
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(dont-check
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(nnheader-report 'nnfolder "Selected group %s" group)
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t)
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(t
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(let* ((active (assoc group nnfolder-group-alist))
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(group (car active))
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(range (cadr active)))
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(cond
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((null active)
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(nnheader-report 'nnfolder "No such group: %s" group))
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((null nnfolder-current-group)
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(nnheader-report 'nnfolder "Empty group: %s" group))
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(t
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(nnheader-report 'nnfolder "Selected group %s" group)
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(nnheader-insert "211 %d %d %d %s\n"
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(1+ (- (cdr range) (car range)))
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(car range) (cdr range) group))))))))
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(deffoo nnfolder-request-scan (&optional group server)
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(nnfolder-possibly-change-group nil server)
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(when nnfolder-get-new-mail
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(nnfolder-possibly-change-group group server)
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(nnmail-get-new-mail
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'nnfolder 'nnfolder-save-all-buffers
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nnfolder-directory group)))
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(defun nnfolder-save-all-buffers ()
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(let ((bufs nnfolder-buffer-alist))
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(save-excursion
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(while bufs
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(if (not (gnus-buffer-live-p (nth 1 (car bufs))))
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(setq nnfolder-buffer-alist
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(delq (car bufs) nnfolder-buffer-alist))
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(set-buffer (nth 1 (car bufs)))
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(nnfolder-save-buffer)
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(kill-buffer (current-buffer)))
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(setq bufs (cdr bufs))))))
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;; Don't close the buffer if we're not shutting down the server. This way,
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;; we can keep the buffer in the group buffer cache, and not have to grovel
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;; over the buffer again unless we add new mail to it or modify it in some
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;; way.
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(deffoo nnfolder-close-group (group &optional _server _force)
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;; Make sure we _had_ the group open.
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(when (or (assoc group nnfolder-buffer-alist)
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(equal group nnfolder-current-group))
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(let ((inf (assoc group nnfolder-buffer-alist)))
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(when inf
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(when (and nnfolder-current-group
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nnfolder-current-buffer)
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(push (list nnfolder-current-group nnfolder-current-buffer)
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nnfolder-buffer-alist))
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(setq nnfolder-buffer-alist
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(delq inf nnfolder-buffer-alist))
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(setq nnfolder-current-buffer (cadr inf)
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nnfolder-current-group (car inf))))
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(when (buffer-live-p nnfolder-current-buffer)
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(with-current-buffer nnfolder-current-buffer
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;; If the buffer was modified, write the file out now.
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(nnfolder-save-buffer)
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;; If we're shutting the server down, we need to kill the
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;; buffer and remove it from the open buffer list. Or, of
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;; course, if we're trying to minimize our space impact.
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(kill-buffer (current-buffer))
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(setq nnfolder-buffer-alist (delq (assoc group nnfolder-buffer-alist)
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nnfolder-buffer-alist)))))
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(setq nnfolder-current-group nil
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nnfolder-current-buffer nil)
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t)
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(deffoo nnfolder-request-create-group (group &optional server _args)
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(nnfolder-possibly-change-group nil server)
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(nnmail-activate 'nnfolder)
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(cond ((zerop (length group))
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(nnheader-report 'nnfolder "Invalid (empty) group name"))
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((file-directory-p (nnfolder-group-pathname group))
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(nnheader-report 'nnfolder "%s is a directory"
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(file-name-as-directory
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(let ((nnmail-pathname-coding-system nil))
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(nnfolder-group-pathname group)))))
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((assoc group nnfolder-group-alist)
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t)
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(t
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(push (list group (cons 1 0)) nnfolder-group-alist)
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(nnfolder-save-active nnfolder-group-alist nnfolder-active-file)
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(save-current-buffer
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(nnfolder-read-folder group))
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t)))
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(deffoo nnfolder-request-list (&optional server)
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(nnfolder-possibly-change-group nil server)
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(save-excursion
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(let ((nnmail-file-coding-system nnfolder-active-file-coding-system))
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(nnmail-find-file nnfolder-active-file)
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(setq nnfolder-group-alist (nnmail-get-active)))
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t))
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(deffoo nnfolder-request-newgroups (_date &optional server)
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(nnfolder-possibly-change-group nil server)
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(nnfolder-request-list server))
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(deffoo nnfolder-request-list-newsgroups (&optional server)
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(nnfolder-possibly-change-group nil server)
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(save-excursion
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(let ((nnmail-file-coding-system nnfolder-file-coding-system))
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(nnmail-find-file nnfolder-newsgroups-file))))
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;; Return a list consisting of all article numbers existing in the
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;; current folder.
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(defun nnfolder-existing-articles ()
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(when nnfolder-current-buffer
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(with-current-buffer nnfolder-current-buffer
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(goto-char (point-min))
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(let ((marker (concat "\n" nnfolder-article-marker))
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(number "[0-9]+")
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numbers)
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(while (and (search-forward marker nil t)
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(re-search-forward number nil t))
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(let ((newnum (string-to-number (match-string 0))))
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(if (nnmail-within-headers-p)
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(push newnum numbers))))
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;; The article numbers are increasing, so this result is sorted.
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(nreverse numbers)))))
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(autoload 'gnus-request-group "gnus-int")
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(declare-function gnus-request-create-group "gnus-int"
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(group &optional gnus-command-method args))
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(defvar nnfolder-current-directory)
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(deffoo nnfolder-request-expire-articles (articles newsgroup
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&optional server force)
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(nnfolder-possibly-change-group newsgroup server)
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(let ((is-old t)
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;; The articles we have deleted so far.
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(deleted-articles nil)
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;; The articles that really exist and will
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;; be expired if they are old enough.
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(maybe-expirable
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(gnus-sorted-intersection articles (nnfolder-existing-articles)))
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target)
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(nnmail-activate 'nnfolder)
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(with-current-buffer nnfolder-current-buffer
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;; Since messages are sorted in arrival order and expired in the
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;; same order, we can stop as soon as we find a message that is
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;; too old.
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(while (and maybe-expirable is-old)
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(goto-char (point-min))
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(when (and (nnfolder-goto-article (car maybe-expirable))
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(search-forward (concat "\n" nnfolder-article-marker)
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nil t))
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(forward-sexp)
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(when (setq is-old
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(nnmail-expired-article-p
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newsgroup
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(buffer-substring
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(point) (progn (end-of-line) (point)))
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force nnfolder-inhibit-expiry))
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(setq target nnmail-expiry-target)
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(unless (eq target 'delete)
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(with-temp-buffer
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(nnfolder-request-article (car maybe-expirable)
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newsgroup server (current-buffer))
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(let ((nnfolder-current-directory nil))
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(when (functionp target)
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(setq target (funcall target newsgroup)))
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(when (and target (not (eq target 'delete)))
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(if (or (gnus-request-group target)
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(gnus-request-create-group target))
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(nnmail-expiry-target-group target newsgroup)
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(setq target nil)))))
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(nnfolder-possibly-change-group newsgroup server))
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(when target
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(nnheader-message 5 "Deleting article %d in %s..."
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(car maybe-expirable) newsgroup)
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(nnfolder-delete-mail)
|
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(unless (or gnus-nov-is-evil nnfolder-nov-is-evil)
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(nnfolder-nov-delete-article newsgroup (car maybe-expirable)))
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||
;; Must remember which articles were actually deleted
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(push (car maybe-expirable) deleted-articles))))
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(setq maybe-expirable (cdr maybe-expirable)))
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(unless nnfolder-inhibit-expiry
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(nnheader-message 5 "Deleting articles...done"))
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(nnfolder-save-buffer)
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(nnfolder-adjust-min-active newsgroup)
|
||
(nnfolder-save-active nnfolder-group-alist nnfolder-active-file)
|
||
(nnfolder-save-all-buffers)
|
||
(gnus-sorted-difference articles (nreverse deleted-articles)))))
|
||
|
||
(deffoo nnfolder-request-move-article (article group server accept-form
|
||
&optional last _move-is-internal)
|
||
(save-excursion
|
||
(let ((buf (gnus-get-buffer-create " *nnfolder move*"))
|
||
result)
|
||
(and
|
||
(nnfolder-request-article article group server)
|
||
(with-current-buffer buf
|
||
(erase-buffer)
|
||
(insert-buffer-substring nntp-server-buffer)
|
||
(goto-char (point-min))
|
||
(while (re-search-forward
|
||
(concat "^" nnfolder-article-marker)
|
||
(save-excursion (and (search-forward "\n\n" nil t) (point)))
|
||
t)
|
||
(gnus-delete-line))
|
||
(setq result (eval accept-form t))
|
||
(kill-buffer buf)
|
||
result)
|
||
(save-excursion
|
||
(nnfolder-possibly-change-group group server)
|
||
(set-buffer nnfolder-current-buffer)
|
||
(goto-char (point-min))
|
||
(when (nnfolder-goto-article article)
|
||
(nnfolder-delete-mail))
|
||
(unless (or gnus-nov-is-evil nnfolder-nov-is-evil)
|
||
(nnfolder-nov-delete-article group article))
|
||
(when last
|
||
(nnfolder-save-buffer)
|
||
(nnfolder-adjust-min-active group)
|
||
(nnfolder-save-active nnfolder-group-alist nnfolder-active-file))))
|
||
result)))
|
||
|
||
(deffoo nnfolder-request-accept-article (group &optional server last)
|
||
(save-excursion
|
||
(nnfolder-possibly-change-group group server)
|
||
(nnmail-check-syntax)
|
||
(let (;; (buf (current-buffer))
|
||
result art-group)
|
||
(goto-char (point-min))
|
||
(when (looking-at "X-From-Line: ")
|
||
(replace-match "From ")
|
||
(while (progn (forward-line) (looking-at "[ \t]"))
|
||
(delete-char -1)))
|
||
(with-temp-buffer
|
||
(let ((nnmail-file-coding-system nnfolder-active-file-coding-system)
|
||
(nntp-server-buffer (current-buffer)))
|
||
(nnmail-find-file nnfolder-active-file)
|
||
(setq nnfolder-group-alist (nnmail-parse-active))))
|
||
(save-excursion
|
||
(goto-char (point-min))
|
||
(if (search-forward "\n\n" nil t)
|
||
(forward-line -1)
|
||
(goto-char (point-max)))
|
||
(while (re-search-backward (concat "^" nnfolder-article-marker) nil t)
|
||
(delete-region (point) (progn (forward-line 1) (point))))
|
||
(when nnmail-cache-accepted-message-ids
|
||
(nnmail-cache-insert (nnmail-fetch-field "message-id")
|
||
group
|
||
(nnmail-fetch-field "subject")
|
||
(nnmail-fetch-field "from")))
|
||
(setq result (if (stringp group)
|
||
(list (cons group (nnfolder-active-number group)))
|
||
(setq art-group
|
||
(nnmail-article-group 'nnfolder-active-number))))
|
||
(if (and (null result)
|
||
(yes-or-no-p "Moved to `junk' group; delete article? "))
|
||
(setq result 'junk)
|
||
(setq result
|
||
(car (nnfolder-save-mail result)))))
|
||
(when last
|
||
(save-excursion
|
||
(nnfolder-possibly-change-folder (or (caar art-group) group))
|
||
(nnfolder-save-buffer)
|
||
(when nnmail-cache-accepted-message-ids
|
||
(nnmail-cache-close))))
|
||
(nnfolder-save-active nnfolder-group-alist nnfolder-active-file)
|
||
(unless result
|
||
(nnheader-report 'nnfolder "Couldn't store article"))
|
||
result)))
|
||
|
||
(deffoo nnfolder-request-replace-article (article group buffer)
|
||
(nnfolder-possibly-change-group group)
|
||
(with-current-buffer buffer
|
||
(goto-char (point-min))
|
||
(if (not (looking-at "X-From-Line: "))
|
||
(insert "From nobody " (current-time-string) "\n")
|
||
(replace-match "From ")
|
||
(forward-line 1)
|
||
(while (looking-at "[ \t]")
|
||
(delete-char -1)
|
||
(forward-line 1)))
|
||
(nnfolder-normalize-buffer)
|
||
(set-buffer nnfolder-current-buffer)
|
||
(goto-char (point-min))
|
||
(if (not (nnfolder-goto-article article))
|
||
nil
|
||
(nnfolder-delete-mail)
|
||
(insert-buffer-substring buffer)
|
||
(unless (or gnus-nov-is-evil nnfolder-nov-is-evil)
|
||
(with-current-buffer buffer
|
||
(let ((headers (nnfolder-parse-head article
|
||
(point-min) (point-max))))
|
||
(with-current-buffer (nnfolder-open-nov group)
|
||
(if (nnheader-find-nov-line article)
|
||
(delete-region (point) (progn (forward-line 1) (point))))
|
||
(nnheader-insert-nov headers)))))
|
||
(nnfolder-save-buffer)
|
||
t)))
|
||
|
||
(deffoo nnfolder-request-delete-group (group &optional force server)
|
||
(nnfolder-close-group group server t)
|
||
;; Delete all articles in GROUP.
|
||
(if (not force)
|
||
() ; Don't delete the articles.
|
||
;; Delete the file that holds the group.
|
||
(let ((data (nnfolder-group-pathname group))
|
||
(nov (nnfolder-group-nov-pathname group)))
|
||
(ignore-errors (delete-file data))
|
||
(ignore-errors (delete-file nov))))
|
||
;; Remove the group from all structures.
|
||
(setq nnfolder-group-alist
|
||
(delq (assoc group nnfolder-group-alist) nnfolder-group-alist)
|
||
nnfolder-current-group nil
|
||
nnfolder-current-buffer nil)
|
||
;; Save the active file.
|
||
(nnfolder-save-active nnfolder-group-alist nnfolder-active-file)
|
||
t)
|
||
|
||
(deffoo nnfolder-request-rename-group (group new-name &optional server)
|
||
(nnfolder-possibly-change-group group server)
|
||
(with-current-buffer nnfolder-current-buffer
|
||
(and (file-writable-p buffer-file-name)
|
||
(ignore-errors
|
||
(let ((new-file (nnfolder-group-pathname new-name)))
|
||
(gnus-make-directory (file-name-directory new-file))
|
||
(rename-file buffer-file-name new-file)
|
||
(when (file-exists-p (nnfolder-group-nov-pathname group))
|
||
(setq new-file (nnfolder-group-nov-pathname new-name))
|
||
(gnus-make-directory (file-name-directory new-file))
|
||
(rename-file (nnfolder-group-nov-pathname group) new-file)))
|
||
t)
|
||
;; That went ok, so we change the internal structures.
|
||
(let ((entry (assoc group nnfolder-group-alist)))
|
||
(and entry (setcar entry new-name))
|
||
(setq nnfolder-current-buffer nil
|
||
nnfolder-current-group nil)
|
||
;; Save the new group alist.
|
||
(nnfolder-save-active nnfolder-group-alist nnfolder-active-file)
|
||
;; We kill the buffer instead of renaming it and stuff.
|
||
(kill-buffer (current-buffer))
|
||
t))))
|
||
|
||
(deffoo nnfolder-request-regenerate (server)
|
||
(nnfolder-possibly-change-group nil server)
|
||
(nnfolder-generate-active-file)
|
||
t)
|
||
|
||
|
||
;;; Internal functions.
|
||
|
||
(defun nnfolder-adjust-min-active (group)
|
||
;; Find the lowest active article in this group.
|
||
(let* ((active (cadr (assoc group nnfolder-group-alist)))
|
||
(marker (concat "\n" nnfolder-article-marker))
|
||
(number "[0-9]+")
|
||
(activemin (cdr active)))
|
||
(with-current-buffer nnfolder-current-buffer
|
||
(goto-char (point-min))
|
||
(while (and (search-forward marker nil t)
|
||
(re-search-forward number nil t))
|
||
(let ((newnum (string-to-number (match-string 0))))
|
||
(if (nnmail-within-headers-p)
|
||
(setq activemin (min activemin newnum)))))
|
||
(setcar active activemin))))
|
||
|
||
(defun nnfolder-article-string (article)
|
||
(if (numberp article)
|
||
(concat "\n" nnfolder-article-marker (int-to-string article) " ")
|
||
(concat "\nMessage-ID: " article)))
|
||
|
||
(defun nnfolder-goto-article (article)
|
||
"Place point at the start of the headers of ARTICLE.
|
||
ARTICLE can be an article number or a Message-ID.
|
||
Returns t if successful, nil otherwise."
|
||
(let ((art-string (nnfolder-article-string article))
|
||
start found)
|
||
;; It is likely that we are at or before the delimiter line.
|
||
;; We therefore go to the end of the previous line, and start
|
||
;; searching from there.
|
||
(beginning-of-line)
|
||
(unless (bobp)
|
||
(forward-char -1))
|
||
(setq start (point))
|
||
;; First search forward.
|
||
(while (and (setq found (search-forward art-string nil t))
|
||
(not (nnmail-within-headers-p))))
|
||
;; If unsuccessful, search backward from where we started,
|
||
(unless found
|
||
(goto-char start)
|
||
(while (and (setq found (search-backward art-string nil t))
|
||
(not (nnmail-within-headers-p)))))
|
||
(when found
|
||
(nnmail-search-unix-mail-delim-backward))))
|
||
|
||
(defun nnfolder-delete-mail (&optional leave-delim)
|
||
"Delete the message that point is in.
|
||
If optional argument LEAVE-DELIM is t, then mailbox delimiter is not
|
||
deleted. Point is left where the deleted region was."
|
||
(save-restriction
|
||
(narrow-to-region
|
||
(save-excursion
|
||
;; In case point is at the beginning of the message already.
|
||
(forward-line 1)
|
||
(nnmail-search-unix-mail-delim-backward)
|
||
(if leave-delim (progn (forward-line 1) (point))
|
||
(point)))
|
||
(progn
|
||
(forward-line 1)
|
||
(if (nnmail-search-unix-mail-delim)
|
||
(point)
|
||
(point-max))))
|
||
(run-hooks 'nnfolder-delete-mail-hook)
|
||
(delete-region (point-min) (point-max))))
|
||
|
||
(defun nnfolder-possibly-change-group (group &optional server dont-check)
|
||
;; Change servers.
|
||
(when (and server
|
||
(not (nnfolder-server-opened server)))
|
||
(nnfolder-open-server server))
|
||
(unless (gnus-buffer-live-p nnfolder-current-buffer)
|
||
(setq nnfolder-current-buffer nil
|
||
nnfolder-current-group nil))
|
||
;; Change group.
|
||
(let ((file-name-coding-system nnmail-pathname-coding-system))
|
||
(when (and group
|
||
(not (equal group nnfolder-current-group))
|
||
(progn
|
||
(nnmail-activate 'nnfolder)
|
||
(and (assoc group nnfolder-group-alist)
|
||
(file-exists-p (nnfolder-group-pathname group)))))
|
||
(if dont-check
|
||
(setq nnfolder-current-group group
|
||
nnfolder-current-buffer nil)
|
||
(let (file) ;; inf
|
||
;; If we have to change groups, see if we don't already have
|
||
;; the folder in memory. If we do, verify the modtime and
|
||
;; destroy the folder if needed so we can rescan it.
|
||
(setq nnfolder-current-buffer
|
||
(nth 1 (assoc group nnfolder-buffer-alist)))
|
||
|
||
;; If the buffer is not live, make sure it isn't in the
|
||
;; alist. If it is live, verify that nobody else has
|
||
;; touched the file since last time.
|
||
(when (and nnfolder-current-buffer
|
||
(not (gnus-buffer-live-p nnfolder-current-buffer)))
|
||
(setq nnfolder-buffer-alist (delq nil nnfolder-buffer-alist) ;; inf
|
||
nnfolder-current-buffer nil))
|
||
|
||
(setq nnfolder-current-group group)
|
||
|
||
(when (or (not nnfolder-current-buffer)
|
||
(not (verify-visited-file-modtime
|
||
nnfolder-current-buffer)))
|
||
(save-excursion
|
||
(setq file (nnfolder-group-pathname group))
|
||
;; See whether we need to create the new file.
|
||
(unless (file-exists-p file)
|
||
(gnus-make-directory (file-name-directory file))
|
||
(let ((nnmail-file-coding-system
|
||
(or nnfolder-file-coding-system-for-write
|
||
nnfolder-file-coding-system-for-write)))
|
||
(nnmail-write-region (point-min) (point-min)
|
||
file t 'nomesg nil 'excl)))
|
||
(when (setq nnfolder-current-buffer (nnfolder-read-folder group))
|
||
(set-buffer nnfolder-current-buffer)
|
||
(push (list group nnfolder-current-buffer)
|
||
nnfolder-buffer-alist)))))))))
|
||
|
||
(defun nnfolder-save-mail (group-art-list)
|
||
"Called narrowed to an article."
|
||
(let* (save-list group-art)
|
||
(goto-char (point-min))
|
||
;; The From line may have been quoted by movemail.
|
||
(when (looking-at ">From")
|
||
(delete-char 1))
|
||
;; This might come from somewhere else.
|
||
(unless (looking-at "From ")
|
||
(insert "From nobody " (current-time-string) "\n")
|
||
(goto-char (point-min)))
|
||
;; Quote all "From " lines in the article.
|
||
(forward-line 1)
|
||
(let (case-fold-search)
|
||
(while (re-search-forward "^From " nil t)
|
||
(beginning-of-line)
|
||
(insert "> ")))
|
||
(setq save-list group-art-list)
|
||
(nnmail-insert-lines)
|
||
(nnmail-insert-xref group-art-list)
|
||
(run-hooks 'nnmail-prepare-save-mail-hook)
|
||
(run-hooks 'nnfolder-prepare-save-mail-hook)
|
||
|
||
;; Insert the mail into each of the destination groups.
|
||
(while (setq group-art (pop group-art-list))
|
||
;; Kill any previous newsgroup markers.
|
||
(goto-char (point-min))
|
||
(if (search-forward "\n\n" nil t)
|
||
(forward-line -1)
|
||
(goto-char (point-max)))
|
||
(while (search-backward (concat "\n" nnfolder-article-marker) nil t)
|
||
(delete-region (1+ (point)) (progn (forward-line 2) (point))))
|
||
|
||
;; Insert the new newsgroup marker.
|
||
(nnfolder-insert-newsgroup-line group-art)
|
||
|
||
(save-excursion
|
||
(let ((beg (point-min))
|
||
(end (point-max))
|
||
(obuf (current-buffer)))
|
||
(nnfolder-possibly-change-folder (car group-art))
|
||
(let ((buffer-read-only nil))
|
||
(nnfolder-normalize-buffer)
|
||
(insert-buffer-substring obuf beg end))
|
||
(unless (or gnus-nov-is-evil nnfolder-nov-is-evil)
|
||
(set-buffer obuf)
|
||
(nnfolder-add-nov (car group-art) (cdr group-art)
|
||
(nnfolder-parse-head nil beg end))))))
|
||
|
||
;; Did we save it anywhere?
|
||
save-list))
|
||
|
||
(defun nnfolder-normalize-buffer ()
|
||
"Make sure there are two newlines at the end of the buffer."
|
||
(goto-char (point-max))
|
||
(skip-chars-backward "\n")
|
||
(delete-region (point) (point-max))
|
||
(unless (bobp)
|
||
(insert "\n\n")))
|
||
|
||
(defun nnfolder-insert-newsgroup-line (group-art)
|
||
(save-excursion
|
||
(goto-char (point-min))
|
||
(unless (search-forward "\n\n" nil t)
|
||
(goto-char (point-max))
|
||
(insert "\n"))
|
||
(forward-char -1)
|
||
(insert (format (concat nnfolder-article-marker "%d %s\n")
|
||
(cdr group-art) (message-make-date)))))
|
||
|
||
(defun nnfolder-active-number (group)
|
||
;; Find the next article number in GROUP.
|
||
(let ((active (cadr (assoc group nnfolder-group-alist))))
|
||
(if active
|
||
(setcdr active (1+ (cdr active)))
|
||
;; This group is new, so we create a new entry for it.
|
||
;; This might be a bit naughty... creating groups on the drop of
|
||
;; a hat, but I don't know...
|
||
(push (list group (setq active (cons 1 1)))
|
||
nnfolder-group-alist))
|
||
(cdr active)))
|
||
|
||
(defun nnfolder-possibly-change-folder (group)
|
||
(let ((inf (assoc group nnfolder-buffer-alist)))
|
||
(if (and inf
|
||
(gnus-buffer-live-p (cadr inf)))
|
||
(set-buffer (cadr inf))
|
||
(when inf
|
||
(setq nnfolder-buffer-alist (delq inf nnfolder-buffer-alist)))
|
||
(when nnfolder-group-alist
|
||
(nnfolder-save-active nnfolder-group-alist nnfolder-active-file))
|
||
(push (list group (nnfolder-read-folder group))
|
||
nnfolder-buffer-alist))))
|
||
|
||
;; This method has a problem if you've accidentally let the active
|
||
;; list get out of sync with the files. This could happen, say, if
|
||
;; you've accidentally gotten new mail with something other than Gnus
|
||
;; (but why would _that_ ever happen? :-). In that case, we will be
|
||
;; in the middle of processing the file, ready to add new X-Gnus
|
||
;; article number markers, and we'll run across a message with no ID
|
||
;; yet - the active list _may_not_ be ready for us yet.
|
||
|
||
;; To handle this, I'm modifying this routine to maintain the maximum
|
||
;; ID seen so far, and when we hit a message with no ID, we will
|
||
;; _manually_ scan the rest of the message looking for any more,
|
||
;; possibly higher IDs. We'll assume the maximum that we find is the
|
||
;; highest active. Note that this shouldn't cost us much extra time
|
||
;; at all, but will be a lot less vulnerable to glitches between the
|
||
;; mbox and the active file.
|
||
|
||
(defun nnfolder-read-folder (group)
|
||
(let* ((file (nnfolder-group-pathname group))
|
||
(nov (nnfolder-group-nov-pathname group))
|
||
(buffer (set-buffer
|
||
(let ((nnheader-file-coding-system
|
||
nnfolder-file-coding-system))
|
||
(nnheader-find-file-noselect file t)))))
|
||
(mm-enable-multibyte) ;; Use multibyte buffer for future copying.
|
||
(buffer-disable-undo)
|
||
(if (time-equal-p
|
||
(cadr (assoc group nnfolder-scantime-alist))
|
||
(file-attribute-modification-time (file-attributes file)))
|
||
;; This looks up-to-date, so we don't do any scanning.
|
||
(if (file-exists-p file)
|
||
buffer
|
||
(push (list group buffer) nnfolder-buffer-alist)
|
||
(set-buffer-modified-p t)
|
||
(nnfolder-save-buffer))
|
||
;; Parse the damn thing.
|
||
(save-excursion
|
||
(goto-char (point-min))
|
||
;; Remove any blank lines at the start.
|
||
(while (eq (following-char) ?\n)
|
||
(delete-char 1))
|
||
(nnmail-activate 'nnfolder)
|
||
;; Read in the file.
|
||
(let* ((delim "^From ")
|
||
(marker (concat "\n" nnfolder-article-marker))
|
||
(number "[0-9]+")
|
||
(active (or (cadr (assoc group nnfolder-group-alist))
|
||
(cons 1 0)))
|
||
(scantime (assoc group nnfolder-scantime-alist))
|
||
(minid (cdr active))
|
||
maxid start end newscantime
|
||
novbuf articles newnum
|
||
buffer-read-only)
|
||
(setq maxid minid)
|
||
|
||
(unless (or gnus-nov-is-evil nnfolder-nov-is-evil
|
||
(and (file-exists-p nov)
|
||
(file-newer-than-file-p nov file)))
|
||
(unless (file-exists-p nov)
|
||
(gnus-make-directory (file-name-directory nov)))
|
||
(with-current-buffer
|
||
(setq novbuf (nnfolder-open-nov group))
|
||
(goto-char (point-min))
|
||
(while (not (eobp))
|
||
(push (read novbuf) articles)
|
||
(forward-line 1))
|
||
(setq articles (nreverse articles))))
|
||
(goto-char (point-min))
|
||
|
||
;; Anytime the active number is 1 or 0, it is suspect. In
|
||
;; that case, search the file manually to find the active
|
||
;; number. Or, of course, if we're being paranoid. (This
|
||
;; would also be the place to build other lists from the
|
||
;; header markers, such as expunge lists, etc., if we ever
|
||
;; desired to abandon the active file entirely for mboxes.)
|
||
(when (or nnfolder-ignore-active-file
|
||
novbuf
|
||
(< maxid 2))
|
||
(while (and (search-forward marker nil t)
|
||
(looking-at number))
|
||
(setq newnum (string-to-number (match-string 0)))
|
||
(when (nnmail-within-headers-p)
|
||
(setq maxid (max maxid newnum)
|
||
minid (min minid newnum))
|
||
(when novbuf
|
||
(if (memq newnum articles)
|
||
(setq articles (delq newnum articles))
|
||
(let ((headers (nnfolder-parse-head newnum)))
|
||
(with-current-buffer novbuf
|
||
(nnheader-find-nov-line newnum)
|
||
(nnheader-insert-nov headers)))))))
|
||
(when (and novbuf articles)
|
||
(with-current-buffer novbuf
|
||
(dolist (article articles)
|
||
(when (nnheader-find-nov-line article)
|
||
(delete-region (point)
|
||
(progn (forward-line 1) (point)))))))
|
||
(setcar active (max 1 (min minid maxid)))
|
||
(setcdr active (max maxid (cdr active)))
|
||
(goto-char (point-min)))
|
||
|
||
;; As long as we trust that the user will only insert
|
||
;; unmarked mail at the end, go to the end and search
|
||
;; backwards for the last marker. Find the start of that
|
||
;; message, and begin to search for unmarked messages from
|
||
;; there.
|
||
(when (not (or nnfolder-distrust-mbox
|
||
(< maxid 2)))
|
||
(goto-char (point-max))
|
||
(unless (re-search-backward marker nil t)
|
||
(goto-char (point-min)))
|
||
;;(when (nnmail-search-unix-mail-delim)
|
||
;; (goto-char (point-min)))
|
||
)
|
||
|
||
;; Keep track of the active number on our own, and insert it
|
||
;; back into the active list when we're done. Also, prime
|
||
;; the pump to cut down on the number of searches we do.
|
||
(unless (nnmail-search-unix-mail-delim)
|
||
(goto-char (point-max)))
|
||
(setq end (point-marker))
|
||
(while (not (= end (point-max)))
|
||
(setq start (marker-position end))
|
||
(goto-char end)
|
||
;; There may be more than one "From " line, so we skip past
|
||
;; them.
|
||
(while (looking-at delim)
|
||
(forward-line 1))
|
||
(set-marker end (if (nnmail-search-unix-mail-delim)
|
||
(point)
|
||
(point-max)))
|
||
(goto-char start)
|
||
(when (not (search-forward marker end t))
|
||
(narrow-to-region start end)
|
||
(nnmail-insert-lines)
|
||
(nnfolder-insert-newsgroup-line
|
||
(cons nil
|
||
(setq newnum
|
||
(nnfolder-active-number group))))
|
||
(when novbuf
|
||
(let ((headers (nnfolder-parse-head newnum (point-min)
|
||
(point-max))))
|
||
(with-current-buffer novbuf
|
||
(goto-char (point-max))
|
||
(nnheader-insert-nov headers))))
|
||
(widen)))
|
||
|
||
(set-marker end nil)
|
||
;; Make absolutely sure that the active list reflects
|
||
;; reality!
|
||
(nnfolder-save-active nnfolder-group-alist nnfolder-active-file)
|
||
|
||
;; Set the scantime for this group.
|
||
(setq newscantime (visited-file-modtime))
|
||
(if scantime
|
||
(setcdr scantime (list newscantime))
|
||
(push (list group newscantime)
|
||
nnfolder-scantime-alist))
|
||
;; Save nov.
|
||
(when novbuf
|
||
(nnfolder-save-nov))
|
||
(current-buffer))))))
|
||
|
||
(defun nnfolder-recursive-directory-files (dir prefix)
|
||
(let ((files nil))
|
||
(dolist (file (directory-files dir))
|
||
(cond
|
||
((or (file-symlink-p (expand-file-name file dir))
|
||
(member file '("." "..")))
|
||
;; Ignore
|
||
)
|
||
((file-directory-p (expand-file-name file dir))
|
||
(setq files (nconc (nnfolder-recursive-directory-files
|
||
(expand-file-name file dir)
|
||
(if prefix
|
||
(concat prefix "." (directory-file-name file))
|
||
(file-name-nondirectory file)))
|
||
files)))
|
||
((file-regular-p (expand-file-name file dir))
|
||
(push (if prefix
|
||
(concat prefix "." file)
|
||
file)
|
||
files))))
|
||
files))
|
||
|
||
;;;###autoload
|
||
(defun nnfolder-generate-active-file ()
|
||
"Look for mbox folders in the nnfolder directory and make them into groups.
|
||
This command does not work if you use short group names."
|
||
(interactive)
|
||
(nnmail-activate 'nnfolder)
|
||
(unless (or gnus-nov-is-evil nnfolder-nov-is-evil)
|
||
(dolist (file (directory-files (or nnfolder-nov-directory
|
||
nnfolder-directory)
|
||
t
|
||
(concat
|
||
(regexp-quote nnfolder-nov-file-suffix)
|
||
"$")))
|
||
(when (not (message-mail-file-mbox-p file))
|
||
(ignore-errors
|
||
(delete-file file)))))
|
||
(dolist (file (if nnmail-use-long-file-names
|
||
(directory-files nnfolder-directory)
|
||
(nnfolder-recursive-directory-files
|
||
nnfolder-directory nil)))
|
||
(when (and (not (backup-file-name-p file))
|
||
(message-mail-file-mbox-p
|
||
(nnfolder-group-pathname file)))
|
||
(let ((oldgroup (assoc file nnfolder-group-alist)))
|
||
(if oldgroup
|
||
(nnheader-message 5 "Refreshing group %s..." file)
|
||
(nnheader-message 5 "Adding group %s..." file))
|
||
(if oldgroup
|
||
(setq nnfolder-group-alist
|
||
(delq oldgroup (copy-sequence nnfolder-group-alist))))
|
||
(push (list file (cons 1 0)) nnfolder-group-alist)
|
||
(nnfolder-possibly-change-folder file)
|
||
(nnfolder-possibly-change-group file)
|
||
(nnfolder-close-group file))))
|
||
(nnheader-message 5 ""))
|
||
|
||
(defun nnfolder-group-pathname (group)
|
||
"Make file name for GROUP."
|
||
(setq group
|
||
(encode-coding-string group nnmail-pathname-coding-system))
|
||
(let ((dir (file-name-as-directory (expand-file-name nnfolder-directory))))
|
||
;; If this file exists, we use it directly.
|
||
(if (or nnmail-use-long-file-names
|
||
(file-exists-p (concat dir group)))
|
||
(concat dir group)
|
||
;; If not, we translate dots into slashes.
|
||
(concat dir (nnheader-replace-chars-in-string group ?. ?/)))))
|
||
|
||
(defun nnfolder-group-nov-pathname (group)
|
||
"Make pathname for GROUP NOV."
|
||
(let ((nnfolder-directory
|
||
(or nnfolder-nov-directory nnfolder-directory)))
|
||
(concat (nnfolder-group-pathname group) nnfolder-nov-file-suffix)))
|
||
|
||
(defvar copyright-update)
|
||
|
||
(defun nnfolder-save-buffer ()
|
||
"Save the buffer."
|
||
(let ((delete-old-versions t))
|
||
(when (buffer-modified-p)
|
||
(run-hooks 'nnfolder-save-buffer-hook)
|
||
(gnus-make-directory (file-name-directory (buffer-file-name)))
|
||
(let ((coding-system-for-write
|
||
(or nnfolder-file-coding-system-for-write
|
||
nnfolder-file-coding-system)))
|
||
(setq-local copyright-update nil)
|
||
(save-buffer)))
|
||
(unless (or gnus-nov-is-evil nnfolder-nov-is-evil)
|
||
(nnfolder-save-nov))))
|
||
|
||
(defun nnfolder-save-active (group-alist active-file)
|
||
(let ((nnmail-active-file-coding-system
|
||
(or nnfolder-active-file-coding-system-for-write
|
||
nnfolder-active-file-coding-system)))
|
||
(nnmail-save-active group-alist active-file)))
|
||
|
||
(defun nnfolder-open-nov (group)
|
||
(or (cdr (assoc group nnfolder-nov-buffer-alist))
|
||
(let ((buffer (gnus-get-buffer-create (format " *nnfolder overview %s*" group))))
|
||
(with-current-buffer buffer
|
||
(setq-local nnfolder-nov-buffer-file-name
|
||
(nnfolder-group-nov-pathname group))
|
||
(erase-buffer)
|
||
(when (file-exists-p nnfolder-nov-buffer-file-name)
|
||
(nnheader-insert-file-contents nnfolder-nov-buffer-file-name)))
|
||
(push (cons group buffer) nnfolder-nov-buffer-alist)
|
||
buffer)))
|
||
|
||
(defun nnfolder-save-nov ()
|
||
(save-excursion
|
||
(while nnfolder-nov-buffer-alist
|
||
(when (buffer-live-p (cdar nnfolder-nov-buffer-alist))
|
||
(set-buffer (cdar nnfolder-nov-buffer-alist))
|
||
(when (buffer-modified-p)
|
||
(gnus-make-directory (file-name-directory
|
||
nnfolder-nov-buffer-file-name))
|
||
(nnmail-write-region 1 (point-max) nnfolder-nov-buffer-file-name
|
||
nil 'nomesg))
|
||
(set-buffer-modified-p nil)
|
||
(kill-buffer (current-buffer)))
|
||
(setq nnfolder-nov-buffer-alist (cdr nnfolder-nov-buffer-alist)))))
|
||
|
||
(defun nnfolder-nov-delete-article (group article)
|
||
(with-current-buffer (nnfolder-open-nov group)
|
||
(when (nnheader-find-nov-line article)
|
||
(delete-region (point) (progn (forward-line 1) (point))))
|
||
t))
|
||
|
||
(defun nnfolder-retrieve-headers-with-nov (articles &optional fetch-old)
|
||
(if (or gnus-nov-is-evil nnfolder-nov-is-evil)
|
||
nil
|
||
(let ((nov (nnfolder-group-nov-pathname nnfolder-current-group)))
|
||
(when (file-exists-p nov)
|
||
(with-current-buffer nntp-server-buffer
|
||
(erase-buffer)
|
||
(nnheader-insert-file-contents nov)
|
||
(if (and fetch-old
|
||
(not (numberp fetch-old)))
|
||
t ; Don't remove anything.
|
||
(nnheader-nov-delete-outside-range
|
||
(if fetch-old (max 1 (- (car articles) fetch-old))
|
||
(car articles))
|
||
(car (last articles)))
|
||
t))))))
|
||
|
||
(defun nnfolder-parse-head (&optional number b e)
|
||
"Parse the head of the current buffer."
|
||
(let ((buf (current-buffer))
|
||
chars)
|
||
(save-excursion
|
||
(unless b
|
||
(setq b (if (nnmail-search-unix-mail-delim-backward)
|
||
(point) (point-min)))
|
||
(forward-line 1)
|
||
(setq e (if (nnmail-search-unix-mail-delim)
|
||
(point) (point-max))))
|
||
(setq chars (- e b))
|
||
(unless (zerop chars)
|
||
(goto-char b)
|
||
(if (search-forward "\n\n" e t) (setq e (1- (point)))))
|
||
(with-temp-buffer
|
||
(insert-buffer-substring buf b e)
|
||
(let ((headers (nnheader-parse-head t)))
|
||
(setf (mail-header-chars headers) chars)
|
||
(setf (mail-header-number headers) number)
|
||
headers)))))
|
||
|
||
(defun nnfolder-add-nov (group article headers)
|
||
"Add a nov line for the GROUP base."
|
||
(with-current-buffer (nnfolder-open-nov group)
|
||
(goto-char (point-max))
|
||
(setf (mail-header-number headers) article)
|
||
(nnheader-insert-nov headers)))
|
||
|
||
(provide 'nnfolder)
|
||
|
||
;;; nnfolder.el ends here
|