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37cf4454b1
* lisp/gnus/mm-util.el (mm-special-display-p): Remove. (mm-decode-coding-string, mm-encode-coding-string) (mm-decode-coding-region, mm-encode-coding-region): Remove. (mm-string-to-multibyte): Remove. (mm-char-or-char-int-p): Remove. (mm-ucs-to-char): Remove compat versions of the function. (mm-read-coding-system): Remove. (mm-coding-system-p): Remove compat code. (mm-enrich-utf-8-by-mule-ucs): Remove. (mm-enable-multibyte, mm-disable-multibyte): Remove compat versions. (mm-delete-duplicates): Remove. (mm-multibyte-p): Remove compat versions. (mm-xemacs-find-mime-charset-1): Remove. (mm-xemacs-find-mime-charset): Remove. (mm-make-temp-file): Made obsolete. (mm-find-buffer-file-coding-system): Remove XEmacs compat.
584 lines
19 KiB
EmacsLisp
584 lines
19 KiB
EmacsLisp
;;; nnmh.el --- mhspool access for Gnus
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;; Copyright (C) 1995-2016 Free Software Foundation, Inc.
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;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
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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 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 <http://www.gnu.org/licenses/>.
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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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(require 'gnus-start)
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(require 'nnoo)
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(eval-when-compile (require 'cl))
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(nnoo-declare nnmh)
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(defvoo nnmh-directory message-directory
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"Mail spool directory.")
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(defvoo nnmh-get-new-mail t
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"If non-nil, nnmh will check the incoming mail file and split the mail.")
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(defvoo nnmh-prepare-save-mail-hook nil
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"Hook run narrowed to an article before saving.")
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(defvoo nnmh-be-safe nil
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"If non-nil, nnmh will check all articles to make sure whether they are new or not.
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Go through the .nnmh-articles file and compare with the actual
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articles in this folder. The articles that are \"new\" will be marked
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as unread by Gnus.")
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(defconst nnmh-version "nnmh 1.0"
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"nnmh version.")
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(defvoo nnmh-current-directory nil
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"Current news group directory.")
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(defvoo nnmh-status-string "")
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(defvoo nnmh-group-alist nil)
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;; Don't even think about setting this variable. It does not exist.
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;; Forget about it. Uh-huh. Nope. Nobody here. It's only bound
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;; dynamically by certain functions in nndraft.
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(defvar nnmh-allow-delete-final nil)
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;;; Interface functions.
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(nnoo-define-basics nnmh)
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(deffoo nnmh-retrieve-headers (articles &optional newsgroup server fetch-old)
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(with-current-buffer nntp-server-buffer
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(erase-buffer)
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(let* ((file nil)
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(number (length articles))
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(large (and (numberp nnmail-large-newsgroup)
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(> number nnmail-large-newsgroup)))
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(count 0)
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(file-name-coding-system nnmail-pathname-coding-system)
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beg article)
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(nnmh-possibly-change-directory newsgroup server)
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;; We don't support fetching by Message-ID.
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(if (stringp (car articles))
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'headers
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(while articles
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(when (and (file-exists-p
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(setq file (concat (file-name-as-directory
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nnmh-current-directory)
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(int-to-string
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(setq article (pop articles))))))
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(not (file-directory-p file)))
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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 count (1+ count))
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(and large
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(zerop (% count 20))
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(nnheader-message 5 "nnmh: Receiving headers... %d%%"
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(floor (* count 100.0) number))))
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(when large
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(nnheader-message 5 "nnmh: Receiving headers...done"))
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(nnheader-fold-continuation-lines)
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'headers))))
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(deffoo nnmh-open-server (server &optional defs)
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(nnoo-change-server 'nnmh server defs)
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(when (not (file-exists-p nnmh-directory))
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(condition-case ()
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(make-directory nnmh-directory t)
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(error t)))
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(cond
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((not (file-exists-p nnmh-directory))
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(nnmh-close-server)
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(nnheader-report 'nnmh "Couldn't create directory: %s" nnmh-directory))
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((not (file-directory-p (file-truename nnmh-directory)))
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(nnmh-close-server)
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(nnheader-report 'nnmh "Not a directory: %s" nnmh-directory))
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(t
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(nnheader-report 'nnmh "Opened server %s using directory %s"
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server nnmh-directory)
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t)))
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(deffoo nnmh-request-article (id &optional newsgroup server buffer)
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(nnmh-possibly-change-directory newsgroup server)
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(let ((file (if (stringp id)
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nil
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(concat nnmh-current-directory (int-to-string id))))
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(file-name-coding-system nnmail-pathname-coding-system)
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(nntp-server-buffer (or buffer nntp-server-buffer)))
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(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 (nnmail-find-file file))
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(string-to-number (file-name-nondirectory file)))))
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(deffoo nnmh-request-group (group &optional server dont-check info)
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(nnheader-init-server-buffer)
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(nnmh-possibly-change-directory group server)
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(let ((pathname (nnmail-group-pathname group nnmh-directory))
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(file-name-coding-system nnmail-pathname-coding-system)
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dir)
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(cond
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((not (file-directory-p pathname))
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(nnheader-report
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'nnmh "Can't select group (no such directory): %s" group))
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(t
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(setq nnmh-current-directory pathname)
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(and nnmh-get-new-mail
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nnmh-be-safe
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(nnmh-update-gnus-unreads group))
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(cond
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(dont-check
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(nnheader-report 'nnmh "Selected group %s" group)
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t)
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(t
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;; Re-scan the directory if it's on a foreign system.
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(nnheader-re-read-dir pathname)
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(setq dir
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(sort
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(mapcar 'string-to-number
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(directory-files pathname nil "^[0-9]+$" t))
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'<))
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(cond
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(dir
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(setq nnmh-group-alist
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(delq (assoc group nnmh-group-alist) nnmh-group-alist))
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(push (list group (cons (car dir) (car (last dir))))
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nnmh-group-alist)
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(nnheader-report 'nnmh "Selected group %s" group)
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(nnheader-insert
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"211 %d %d %d %s\n" (length dir) (car dir)
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(car (last dir)) group))
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(t
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(nnheader-report 'nnmh "Empty group %s" group)
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(nnheader-insert (format "211 0 1 0 %s\n" group))))))))))
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(deffoo nnmh-request-scan (&optional group server)
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(nnmail-get-new-mail 'nnmh nil nnmh-directory group))
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(deffoo nnmh-request-list (&optional server dir)
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(nnheader-insert "")
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(nnmh-possibly-change-directory nil server)
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(let ((file-name-coding-system nnmail-pathname-coding-system)
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(nnmh-toplev
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(file-truename (or dir (file-name-as-directory nnmh-directory)))))
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(nnmh-request-list-1 nnmh-toplev))
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(setq nnmh-group-alist (nnmail-get-active))
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t)
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(defvar nnmh-toplev)
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(defun nnmh-request-list-1 (dir)
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(setq dir (expand-file-name dir))
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;; Recurse down all directories.
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(let ((files (nnheader-directory-files dir t nil t))
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(max 0)
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min rdir num subdirectoriesp file)
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;; Recurse down directories.
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(setq subdirectoriesp
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;; nth 1 of file-attributes always 1 on MS Windows :(
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(/= (nth 1 (file-attributes (file-truename dir))) 2))
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(dolist (rdir files)
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(if (or (not subdirectoriesp)
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(file-regular-p rdir))
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(progn
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(setq file (file-name-nondirectory rdir))
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(when (string-match "^[0-9]+$" file)
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(setq num (string-to-number file))
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(setq max (max max num))
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(when (or (null min)
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(< num min))
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(setq min num))))
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;; This is a directory.
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(when (and (file-readable-p rdir)
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(not (equal (file-truename rdir)
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(file-truename dir))))
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(nnmh-request-list-1 rdir))))
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;; For each directory, generate an active file line.
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(unless (string= (expand-file-name nnmh-toplev) dir)
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(with-current-buffer nntp-server-buffer
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(goto-char (point-max))
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(insert
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(format
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"%s %.0f %.0f y\n"
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(progn
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(string-match
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(regexp-quote
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(file-truename (file-name-as-directory
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(expand-file-name nnmh-toplev))))
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dir)
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(string-to-multibyte ;Why? Isn't it multibyte already?
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(encode-coding-string
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(nnheader-replace-chars-in-string
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(substring dir (match-end 0))
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?/ ?.)
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nnmail-pathname-coding-system)))
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(or max 0)
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(or min 1))))))
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t)
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(deffoo nnmh-request-newgroups (date &optional server)
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(nnmh-request-list server))
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(deffoo nnmh-request-expire-articles (articles newsgroup
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&optional server force)
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(nnmh-possibly-change-directory newsgroup server)
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(let ((is-old t)
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(dir nnmh-current-directory)
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article rest mod-time)
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(nnheader-init-server-buffer)
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(while (and articles is-old)
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(setq article (concat dir (int-to-string (car articles))))
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(when (setq mod-time (nth 5 (file-attributes article)))
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(if (and (nnmh-deletable-article-p newsgroup (car articles))
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(setq is-old
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(nnmail-expired-article-p newsgroup mod-time force)))
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(progn
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;; Allow a special target group. -- jcn
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(unless (eq nnmail-expiry-target 'delete)
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(with-temp-buffer
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(nnmh-request-article (car articles)
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newsgroup server (current-buffer))
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(nnmail-expiry-target-group
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nnmail-expiry-target newsgroup)))
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(nnheader-message 5 "Deleting article %s in %s..."
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article newsgroup)
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(condition-case ()
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(funcall nnmail-delete-file-function article)
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(file-error
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(nnheader-message 1 "Couldn't delete article %s in %s"
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article newsgroup)
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(push (car articles) rest))))
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(push (car articles) rest)))
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(setq articles (cdr articles)))
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(nnheader-message 5 "")
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(nconc rest articles)))
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(deffoo nnmh-close-group (group &optional server)
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t)
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(deffoo nnmh-request-move-article (article group server accept-form
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&optional last move-is-internal)
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(let ((buf (get-buffer-create " *nnmh move*"))
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result)
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(and
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(nnmh-deletable-article-p group article)
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(nnmh-request-article article group server)
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(with-current-buffer buf
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(erase-buffer)
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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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(nnmh-possibly-change-directory group server)
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(condition-case ()
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(funcall nnmail-delete-file-function
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(concat nnmh-current-directory (int-to-string article)))
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(file-error nil))))
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result))
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(deffoo nnmh-request-accept-article (group &optional server last noinsert)
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(nnmh-possibly-change-directory group server)
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(nnmail-check-syntax)
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(when nnmail-cache-accepted-message-ids
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(nnmail-cache-insert (nnmail-fetch-field "message-id")
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group
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(nnmail-fetch-field "subject")
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(nnmail-fetch-field "from")))
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(nnheader-init-server-buffer)
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(prog1
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(if (stringp group)
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(if noinsert
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(nnmh-active-number group)
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(car (nnmh-save-mail
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(list (cons group (nnmh-active-number group)))
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noinsert)))
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(let ((res (nnmail-article-group 'nnmh-active-number)))
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(if (and (null res)
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(yes-or-no-p "Moved to `junk' group; delete article? "))
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'junk
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(car (nnmh-save-mail res noinsert)))))
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(when (and last nnmail-cache-accepted-message-ids)
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(nnmail-cache-close))))
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(deffoo nnmh-request-replace-article (article group buffer)
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(nnmh-possibly-change-directory group)
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(with-current-buffer buffer
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(nnmh-possibly-create-directory group)
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(ignore-errors
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(nnmail-write-region
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(point-min) (point-max)
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(concat nnmh-current-directory (int-to-string article))
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nil (if (nnheader-be-verbose 5) nil 'nomesg))
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t)))
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(deffoo nnmh-request-create-group (group &optional server args)
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(nnheader-init-server-buffer)
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(unless (assoc group nnmh-group-alist)
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(let (active)
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(push (list group (setq active (cons 1 0)))
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nnmh-group-alist)
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(nnmh-possibly-create-directory group)
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(nnmh-possibly-change-directory group server)
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(let ((articles (mapcar 'string-to-number
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(directory-files
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nnmh-current-directory nil "^[0-9]+$"))))
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(when articles
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(setcar active (apply 'min articles))
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(setcdr active (apply 'max articles))))))
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t)
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(deffoo nnmh-request-delete-group (group &optional force server)
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(nnmh-possibly-change-directory group server)
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;; Delete all articles in GROUP.
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(if (not force)
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() ; Don't delete the articles.
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(let ((articles (directory-files nnmh-current-directory t "^[0-9]+$")))
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(while articles
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(when (file-writable-p (car articles))
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(nnheader-message 5 "Deleting article %s in %s..."
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(car articles) group)
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(funcall nnmail-delete-file-function (car articles)))
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(setq articles (cdr articles))))
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;; Try to delete the directory itself.
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(ignore-errors
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(delete-directory nnmh-current-directory)))
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;; Remove the group from all structures.
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(setq nnmh-group-alist
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(delq (assoc group nnmh-group-alist) nnmh-group-alist)
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nnmh-current-directory nil)
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t)
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(deffoo nnmh-request-rename-group (group new-name &optional server)
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(nnmh-possibly-change-directory group server)
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(let ((new-dir (nnmail-group-pathname new-name nnmh-directory))
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(old-dir (nnmail-group-pathname group nnmh-directory)))
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(when (ignore-errors
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(make-directory new-dir t)
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t)
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;; We move the articles file by file instead of renaming
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;; the directory -- there may be subgroups in this group.
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;; One might be more clever, I guess.
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(let ((files (nnheader-article-to-file-alist old-dir)))
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(while files
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(rename-file
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(concat old-dir (cdar files))
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(concat new-dir (cdar files)))
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(pop files)))
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(when (<= (length (directory-files old-dir)) 2)
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(ignore-errors
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(delete-directory old-dir)))
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;; That went ok, so we change the internal structures.
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(let ((entry (assoc group nnmh-group-alist)))
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(when entry
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(setcar entry new-name))
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(setq nnmh-current-directory nil)
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t))))
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(nnoo-define-skeleton nnmh)
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;;; Internal functions.
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(defun nnmh-possibly-change-directory (newsgroup &optional server)
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(when (and server
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(not (nnmh-server-opened server)))
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(nnmh-open-server server))
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(when newsgroup
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(let ((pathname (nnmail-group-pathname newsgroup nnmh-directory))
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(file-name-coding-system nnmail-pathname-coding-system))
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(if (file-directory-p pathname)
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(setq nnmh-current-directory pathname)
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(nnheader-report 'nnmh "Not a directory: %s" nnmh-directory)))))
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(defun nnmh-possibly-create-directory (group)
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(let (dir dirs)
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(setq dir (nnmail-group-pathname group nnmh-directory))
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(while (not (file-directory-p dir))
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(push 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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(when (make-directory (directory-file-name (car dirs)))
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(error "Could not create directory %s" (car dirs)))
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(nnheader-message 5 "Creating mail directory %s" (car dirs))
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(setq dirs (cdr dirs)))))
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(defun nnmh-save-mail (group-art &optional noinsert)
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"Called narrowed to an article."
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(unless noinsert
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(nnmail-insert-lines)
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(nnmail-insert-xref group-art))
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(run-hooks 'nnmail-prepare-save-mail-hook)
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(run-hooks 'nnmh-prepare-save-mail-hook)
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(goto-char (point-min))
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(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
|
||
(nnmh-possibly-create-directory (caar ga))
|
||
(let ((file (concat (nnmail-group-pathname
|
||
(caar ga) nnmh-directory)
|
||
(int-to-string (cdar ga)))))
|
||
(if first
|
||
;; It was already saved, so we just make a hard link.
|
||
(funcall nnmail-crosspost-link-function first file t)
|
||
;; Save the article.
|
||
(nnmail-write-region (point-min) (point-max) file nil nil)
|
||
(setq first file)))
|
||
(setq ga (cdr ga))))
|
||
group-art)
|
||
|
||
(defun nnmh-active-number (group)
|
||
"Compute the next article number in GROUP."
|
||
(let ((active (cadr (assoc group nnmh-group-alist)))
|
||
(dir (nnmail-group-pathname group nnmh-directory))
|
||
(file-name-coding-system nnmail-pathname-coding-system)
|
||
file)
|
||
(unless active
|
||
;; The group wasn't known to nnmh, so we just create an active
|
||
;; entry for it.
|
||
(setq active (cons 1 0))
|
||
(push (list group active) nnmh-group-alist)
|
||
(unless (file-exists-p dir)
|
||
(gnus-make-directory dir))
|
||
;; Find the highest number in the group.
|
||
(let ((files (sort
|
||
(mapcar 'string-to-number
|
||
(directory-files dir nil "^[0-9]+$"))
|
||
'>)))
|
||
(when files
|
||
(setcdr active (car files)))))
|
||
(setcdr active (1+ (cdr active)))
|
||
(while (or
|
||
;; See whether the file exists...
|
||
(file-exists-p
|
||
(setq file (concat (nnmail-group-pathname group nnmh-directory)
|
||
(int-to-string (cdr active)))))
|
||
;; ... or there is a buffer that will make that file exist
|
||
;; in the future.
|
||
(get-file-buffer file))
|
||
;; Skip past that file.
|
||
(setcdr active (1+ (cdr active))))
|
||
(cdr active)))
|
||
|
||
(defun nnmh-update-gnus-unreads (group)
|
||
;; Go through the .nnmh-articles file and compare with the actual
|
||
;; articles in this folder. The articles that are "new" will be
|
||
;; marked as unread by Gnus.
|
||
(let* ((dir nnmh-current-directory)
|
||
(files (sort (mapcar 'string-to-number
|
||
(directory-files nnmh-current-directory
|
||
nil "^[0-9]+$" t))
|
||
'<))
|
||
(nnmh-file (concat dir ".nnmh-articles"))
|
||
new articles)
|
||
;; Load the .nnmh-articles file.
|
||
(when (file-exists-p nnmh-file)
|
||
(setq articles
|
||
(let (nnmh-newsgroup-articles)
|
||
(ignore-errors (load nnmh-file nil t t))
|
||
nnmh-newsgroup-articles)))
|
||
;; Add all new articles to the `new' list.
|
||
(let ((art files))
|
||
(while art
|
||
(unless (assq (car art) articles)
|
||
(push (car art) new))
|
||
(setq art (cdr art))))
|
||
;; Remove all deleted articles.
|
||
(let ((art articles))
|
||
(while art
|
||
(unless (memq (caar art) files)
|
||
(setq articles (delq (car art) articles)))
|
||
(setq art (cdr art))))
|
||
;; Check whether the articles really are the ones that Gnus thinks
|
||
;; they are by looking at the time-stamps.
|
||
(let ((arts articles)
|
||
art)
|
||
(while (setq art (pop arts))
|
||
(when (not (equal
|
||
(nth 5 (file-attributes
|
||
(concat dir (int-to-string (car art)))))
|
||
(cdr art)))
|
||
(setq articles (delq art articles))
|
||
(push (car art) new))))
|
||
;; Go through all the new articles and add them, and their
|
||
;; time-stamps, to the list.
|
||
(setq articles
|
||
(nconc articles
|
||
(mapcar
|
||
(lambda (art)
|
||
(cons art
|
||
(nth 5 (file-attributes
|
||
(concat dir (int-to-string art))))))
|
||
new)))
|
||
;; Make Gnus mark all new articles as unread.
|
||
(when new
|
||
(gnus-make-articles-unread
|
||
(gnus-group-prefixed-name group (list 'nnmh ""))
|
||
(setq new (sort new '<))))
|
||
;; Sort the article list with highest numbers first.
|
||
(setq articles (sort articles (lambda (art1 art2)
|
||
(> (car art1) (car art2)))))
|
||
;; Finally write this list back to the .nnmh-articles file.
|
||
(with-temp-file nnmh-file
|
||
(insert ";; Gnus article active file for " group "\n\n")
|
||
(insert "(setq nnmh-newsgroup-articles '")
|
||
(gnus-prin1 articles)
|
||
(insert ")\n"))))
|
||
|
||
(defun nnmh-deletable-article-p (group article)
|
||
"Say whether ARTICLE in GROUP can be deleted."
|
||
(let ((path (concat nnmh-current-directory (int-to-string article))))
|
||
;; Writable.
|
||
(and (file-writable-p path)
|
||
(or
|
||
;; We can never delete the last article in the group.
|
||
(not (eq (cdr (nth 1 (assoc group nnmh-group-alist)))
|
||
article))
|
||
;; Well, we can.
|
||
nnmh-allow-delete-final))))
|
||
|
||
(provide 'nnmh)
|
||
|
||
;;; nnmh.el ends here
|