mirror of
https://git.savannah.gnu.org/git/emacs.git
synced 2024-12-24 10:38:38 +00:00
491 lines
15 KiB
EmacsLisp
491 lines
15 KiB
EmacsLisp
;;; mhspool.el --- MH folder access using NNTP for GNU Emacs
|
||
|
||
;; Copyright (C) 1988, 1989, 1990, 1993 Free Software Foundation, Inc.
|
||
|
||
;; Author: Masanobu UMEDA <umerin@flab.flab.fujitsu.junet>
|
||
;; Maintainer: FSF
|
||
;; Keywords: mail, news
|
||
|
||
;; This file is part of GNU Emacs.
|
||
|
||
;; GNU Emacs is free software; you can redistribute it and/or modify
|
||
;; it under the terms of the GNU General Public License as published by
|
||
;; the Free Software Foundation; either version 2, or (at your option)
|
||
;; any later version.
|
||
|
||
;; GNU Emacs is distributed in the hope that it will be useful,
|
||
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
;; GNU General Public License for more details.
|
||
|
||
;; You should have received a copy of the GNU General Public License
|
||
;; along with GNU Emacs; see the file COPYING. If not, write to
|
||
;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
|
||
|
||
;;; Commentary:
|
||
|
||
;; This package enables you to read mail or articles in MH folders, or
|
||
;; articles saved by GNUS. In any case, the file names of mail or
|
||
;; articles must consist of only numeric letters.
|
||
|
||
;; Before using this package, you have to create a server specific
|
||
;; startup file according to the directory which you want to read. For
|
||
;; example, if you want to read mail under the directory named
|
||
;; `~/Mail', the file must be a file named `.newsrc-:Mail'. (There is
|
||
;; no way to specify hierarchical directory now.) In this case, the
|
||
;; name of the NNTP server passed to GNUS must be `:Mail'.
|
||
|
||
;;; Code:
|
||
|
||
(require 'nntp)
|
||
|
||
(defvar mhspool-list-folders-method
|
||
(function mhspool-list-folders-using-sh)
|
||
"*Function to list files in folders.
|
||
The function should accept a directory as its argument, and fill the
|
||
current buffer with file and directory names. The output format must
|
||
be the same as that of 'ls -R1'. Two functions
|
||
mhspool-list-folders-using-ls and mhspool-list-folders-using-sh are
|
||
provided now. I suppose the later is faster.")
|
||
|
||
(defvar mhspool-list-directory-switches '("-R")
|
||
"*Switches for mhspool-list-folders-using-ls to pass to `ls' for getting file lists.
|
||
One entry should appear on one line. You may need to add `-1' option.")
|
||
|
||
|
||
|
||
(defconst mhspool-version "MHSPOOL 1.8"
|
||
"Version numbers of this version of MHSPOOL.")
|
||
|
||
(defvar mhspool-spool-directory "~/Mail"
|
||
"Private mail directory.")
|
||
|
||
(defvar mhspool-current-directory nil
|
||
"Current news group directory.")
|
||
|
||
;;;
|
||
;;; Replacement of Extended Command for retrieving many headers.
|
||
;;;
|
||
|
||
(defun mhspool-retrieve-headers (sequence)
|
||
"Return list of article headers specified by SEQUENCE of article id.
|
||
The format of list is
|
||
`([NUMBER SUBJECT FROM XREF LINES DATE MESSAGE-ID REFERENCES] ...)'.
|
||
If there is no References: field, In-Reply-To: field is used instead.
|
||
Reader macros for the vector are defined as `nntp-header-FIELD'.
|
||
Writer macros for the vector are defined as `nntp-set-header-FIELD'.
|
||
Newsgroup must be selected before calling this."
|
||
(save-excursion
|
||
(set-buffer nntp-server-buffer)
|
||
;;(erase-buffer)
|
||
(let ((file nil)
|
||
(number (length sequence))
|
||
(count 0)
|
||
(headers nil) ;Result list.
|
||
(article 0)
|
||
(subject nil)
|
||
(message-id nil)
|
||
(from nil)
|
||
(xref nil)
|
||
(lines 0)
|
||
(date nil)
|
||
(references nil))
|
||
(while sequence
|
||
;;(nntp-send-strings-to-server "HEAD" (car sequence))
|
||
(setq article (car sequence))
|
||
(setq file
|
||
(concat mhspool-current-directory (prin1-to-string article)))
|
||
(if (and (file-exists-p file)
|
||
(not (file-directory-p file)))
|
||
(progn
|
||
(erase-buffer)
|
||
(insert-file-contents file)
|
||
;; Make message body invisible.
|
||
(goto-char (point-min))
|
||
(search-forward "\n\n" nil 'move)
|
||
(narrow-to-region (point-min) (point))
|
||
;; Fold continuation lines.
|
||
(goto-char (point-min))
|
||
(while (re-search-forward "\\(\r?\n[ \t]+\\)+" nil t)
|
||
(replace-match " " t t))
|
||
;; Make it possible to search for `\nFIELD'.
|
||
(goto-char (point-min))
|
||
(insert "\n")
|
||
;; Extract From:
|
||
(goto-char (point-min))
|
||
(if (search-forward "\nFrom: " nil t)
|
||
(setq from (buffer-substring
|
||
(point)
|
||
(save-excursion (end-of-line) (point))))
|
||
(setq from "(Unknown User)"))
|
||
;; Extract Subject:
|
||
(goto-char (point-min))
|
||
(if (search-forward "\nSubject: " nil t)
|
||
(setq subject (buffer-substring
|
||
(point)
|
||
(save-excursion (end-of-line) (point))))
|
||
(setq subject "(None)"))
|
||
;; Extract Message-ID:
|
||
(goto-char (point-min))
|
||
(if (search-forward "\nMessage-ID: " nil t)
|
||
(setq message-id (buffer-substring
|
||
(point)
|
||
(save-excursion (end-of-line) (point))))
|
||
(setq message-id nil))
|
||
;; Extract Date:
|
||
(goto-char (point-min))
|
||
(if (search-forward "\nDate: " nil t)
|
||
(setq date (buffer-substring
|
||
(point)
|
||
(save-excursion (end-of-line) (point))))
|
||
(setq date nil))
|
||
;; Extract Lines:
|
||
(goto-char (point-min))
|
||
(if (search-forward "\nLines: " nil t)
|
||
(setq lines (string-to-int
|
||
(buffer-substring
|
||
(point)
|
||
(save-excursion (end-of-line) (point)))))
|
||
;; Count lines since there is no lines field in most cases.
|
||
(setq lines
|
||
(save-restriction
|
||
(goto-char (point-max))
|
||
(widen)
|
||
(count-lines (point) (point-max)))))
|
||
;; Extract Xref:
|
||
(goto-char (point-min))
|
||
(if (search-forward "\nXref: " nil t)
|
||
(setq xref (buffer-substring
|
||
(point)
|
||
(save-excursion (end-of-line) (point))))
|
||
(setq xref nil))
|
||
;; Extract References:
|
||
;; If no References: field, use In-Reply-To: field instead.
|
||
;; Suggested by tanaka@flab.fujitsu.co.jp (Hiroshi TANAKA).
|
||
(goto-char (point-min))
|
||
(if (or (search-forward "\nReferences: " nil t)
|
||
(search-forward "\nIn-Reply-To: " nil t))
|
||
(setq references (buffer-substring
|
||
(point)
|
||
(save-excursion (end-of-line) (point))))
|
||
(setq references nil))
|
||
;; Collect valid article only.
|
||
(and article
|
||
message-id
|
||
(setq headers
|
||
(cons (vector article subject from
|
||
xref lines date
|
||
message-id references) headers)))
|
||
))
|
||
(setq sequence (cdr sequence))
|
||
(setq count (1+ count))
|
||
(and (numberp nntp-large-newsgroup)
|
||
(> number nntp-large-newsgroup)
|
||
(zerop (% count 20))
|
||
(message "MHSPOOL: Receiving headers... %d%%"
|
||
(/ (* count 100) number)))
|
||
)
|
||
(and (numberp nntp-large-newsgroup)
|
||
(> number nntp-large-newsgroup)
|
||
(message "MHSPOOL: Receiving headers... done"))
|
||
(nreverse headers)
|
||
)))
|
||
|
||
|
||
;;;
|
||
;;; Replacement of NNTP Raw Interface.
|
||
;;;
|
||
|
||
(defun mhspool-open-server (host &optional service)
|
||
"Open news server on HOST.
|
||
If HOST is nil, use value of environment variable `NNTPSERVER'.
|
||
If optional argument SERVICE is non-nil, open by the service name."
|
||
(let ((host (or host (getenv "NNTPSERVER")))
|
||
(status nil))
|
||
;; Get directory name from HOST name.
|
||
(if (string-match ":\\(.+\\)$" host)
|
||
(progn
|
||
(setq mhspool-spool-directory
|
||
(file-name-as-directory
|
||
(expand-file-name
|
||
(substring host (match-beginning 1) (match-end 1))
|
||
(expand-file-name "~/" nil))))
|
||
(setq host (system-name)))
|
||
(setq mhspool-spool-directory nil))
|
||
(setq nntp-status-string "")
|
||
(cond ((and (stringp host)
|
||
(stringp mhspool-spool-directory)
|
||
(file-directory-p mhspool-spool-directory)
|
||
(string-equal host (system-name)))
|
||
(setq status (mhspool-open-server-internal host service)))
|
||
((string-equal host (system-name))
|
||
(setq nntp-status-string
|
||
(format "No such directory: %s. Goodbye."
|
||
mhspool-spool-directory)))
|
||
((null host)
|
||
(setq nntp-status-string "NNTP server is not specified."))
|
||
(t
|
||
(setq nntp-status-string
|
||
(format "MHSPOOL: cannot talk to %s." host)))
|
||
)
|
||
status
|
||
))
|
||
|
||
(defun mhspool-close-server ()
|
||
"Close news server."
|
||
(mhspool-close-server-internal))
|
||
|
||
(fset 'mhspool-request-quit (symbol-function 'mhspool-close-server))
|
||
|
||
(defun mhspool-server-opened ()
|
||
"Return server process status, T or NIL.
|
||
If the stream is opened, return T, otherwise return NIL."
|
||
(and nntp-server-buffer
|
||
(get-buffer nntp-server-buffer)))
|
||
|
||
(defun mhspool-status-message ()
|
||
"Return server status response as string."
|
||
nntp-status-string
|
||
)
|
||
|
||
(defun mhspool-request-article (id)
|
||
"Select article by message ID (or number)."
|
||
(let ((file (concat mhspool-current-directory (prin1-to-string id))))
|
||
(if (and (stringp file)
|
||
(file-exists-p file)
|
||
(not (file-directory-p file)))
|
||
(save-excursion
|
||
(mhspool-find-file file)))
|
||
))
|
||
|
||
(defun mhspool-request-body (id)
|
||
"Select article body by message ID (or number)."
|
||
(if (mhspool-request-article id)
|
||
(save-excursion
|
||
(set-buffer nntp-server-buffer)
|
||
(goto-char (point-min))
|
||
(if (search-forward "\n\n" nil t)
|
||
(delete-region (point-min) (point)))
|
||
t
|
||
)
|
||
))
|
||
|
||
(defun mhspool-request-head (id)
|
||
"Select article head by message ID (or number)."
|
||
(if (mhspool-request-article id)
|
||
(save-excursion
|
||
(set-buffer nntp-server-buffer)
|
||
(goto-char (point-min))
|
||
(if (search-forward "\n\n" nil t)
|
||
(delete-region (1- (point)) (point-max)))
|
||
t
|
||
)
|
||
))
|
||
|
||
(defun mhspool-request-stat (id)
|
||
"Select article by message ID (or number)."
|
||
(setq nntp-status-string "MHSPOOL: STAT is not implemented.")
|
||
nil
|
||
)
|
||
|
||
(defun mhspool-request-group (group)
|
||
"Select news GROUP."
|
||
(cond ((file-directory-p
|
||
(mhspool-article-pathname group))
|
||
;; Mail/NEWS.GROUP/N
|
||
(setq mhspool-current-directory
|
||
(mhspool-article-pathname group)))
|
||
((file-directory-p
|
||
(mhspool-article-pathname
|
||
(mhspool-replace-chars-in-string group ?. ?/)))
|
||
;; Mail/NEWS/GROUP/N
|
||
(setq mhspool-current-directory
|
||
(mhspool-article-pathname
|
||
(mhspool-replace-chars-in-string group ?. ?/))))
|
||
))
|
||
|
||
(defun mhspool-request-list ()
|
||
"List active newsgoups."
|
||
(save-excursion
|
||
(let* ((newsgroup nil)
|
||
(articles nil)
|
||
(directory (file-name-as-directory
|
||
(expand-file-name mhspool-spool-directory nil)))
|
||
(folder-regexp (concat "^" (regexp-quote directory) "\\(.+\\):$"))
|
||
(buffer (get-buffer-create " *MHSPOOL File List*")))
|
||
(set-buffer nntp-server-buffer)
|
||
(erase-buffer)
|
||
(set-buffer buffer)
|
||
(erase-buffer)
|
||
;; (apply 'call-process
|
||
;; "ls" nil t nil
|
||
;; (append mhspool-list-directory-switches (list directory)))
|
||
(funcall mhspool-list-folders-method directory)
|
||
(goto-char (point-min))
|
||
(while (re-search-forward folder-regexp nil t)
|
||
(setq newsgroup
|
||
(mhspool-replace-chars-in-string
|
||
(buffer-substring (match-beginning 1) (match-end 1)) ?/ ?.))
|
||
(setq articles nil)
|
||
(forward-line 1) ;(beginning-of-line)
|
||
;; Thank nobu@flab.fujitsu.junet for his bug fixes.
|
||
(while (and (not (eobp))
|
||
(not (looking-at "^$")))
|
||
(if (looking-at "^[0-9]+$")
|
||
(setq articles
|
||
(cons (string-to-int
|
||
(buffer-substring
|
||
(match-beginning 0) (match-end 0)))
|
||
articles)))
|
||
(forward-line 1))
|
||
(if articles
|
||
(princ (format "%s %d %d n\n" newsgroup
|
||
(apply (function max) articles)
|
||
(apply (function min) articles))
|
||
nntp-server-buffer))
|
||
)
|
||
(kill-buffer buffer)
|
||
(set-buffer nntp-server-buffer)
|
||
(buffer-size)
|
||
)))
|
||
|
||
(defun mhspool-request-list-newsgroups ()
|
||
"List newsgoups (defined in NNTP2)."
|
||
(setq nntp-status-string "MHSPOOL: LIST NEWSGROUPS is not implemented.")
|
||
nil
|
||
)
|
||
|
||
(defun mhspool-request-list-distributions ()
|
||
"List distributions (defined in NNTP2)."
|
||
(setq nntp-status-string "MHSPOOL: LIST DISTRIBUTIONS is not implemented.")
|
||
nil
|
||
)
|
||
|
||
(defun mhspool-request-last ()
|
||
"Set current article pointer to the previous article
|
||
in the current news group."
|
||
(setq nntp-status-string "MHSPOOL: LAST is not implemented.")
|
||
nil
|
||
)
|
||
|
||
(defun mhspool-request-next ()
|
||
"Advance current article pointer."
|
||
(setq nntp-status-string "MHSPOOL: NEXT is not implemented.")
|
||
nil
|
||
)
|
||
|
||
(defun mhspool-request-post ()
|
||
"Post a new news in current buffer."
|
||
(setq nntp-status-string "MHSPOOL: POST: what do you mean?")
|
||
nil
|
||
)
|
||
|
||
|
||
;;;
|
||
;;; Replacement of Low-Level Interface to NNTP Server.
|
||
;;;
|
||
|
||
(defun mhspool-open-server-internal (host &optional service)
|
||
"Open connection to news server on HOST by SERVICE (default is nntp)."
|
||
(save-excursion
|
||
(if (not (string-equal host (system-name)))
|
||
(error "MHSPOOL: cannot talk to %s." host))
|
||
;; Initialize communication buffer.
|
||
(setq nntp-server-buffer (get-buffer-create " *nntpd*"))
|
||
(set-buffer nntp-server-buffer)
|
||
(buffer-flush-undo (current-buffer))
|
||
(erase-buffer)
|
||
(kill-all-local-variables)
|
||
(setq case-fold-search t) ;Should ignore case.
|
||
(setq nntp-server-process nil)
|
||
(setq nntp-server-name host)
|
||
;; It is possible to change kanji-fileio-code in this hook.
|
||
(run-hooks 'nntp-server-hook)
|
||
t
|
||
))
|
||
|
||
(defun mhspool-close-server-internal ()
|
||
"Close connection to news server."
|
||
(if nntp-server-buffer
|
||
(kill-buffer nntp-server-buffer))
|
||
(setq nntp-server-buffer nil)
|
||
(setq nntp-server-process nil))
|
||
|
||
(defun mhspool-find-file (file)
|
||
"Insert FILE in server buffer safely."
|
||
(set-buffer nntp-server-buffer)
|
||
(erase-buffer)
|
||
(condition-case ()
|
||
(progn
|
||
(insert-file-contents file)
|
||
(goto-char (point-min))
|
||
;; If there is no body, `^L' appears at end of file. Special
|
||
;; hack for MH folder.
|
||
(and (search-forward "\n\n" nil t)
|
||
(string-equal (buffer-substring (point) (point-max)) "\^L")
|
||
(delete-char 1))
|
||
t
|
||
)
|
||
(file-error nil)
|
||
))
|
||
|
||
(defun mhspool-article-pathname (group)
|
||
"Make pathname for GROUP."
|
||
(concat (file-name-as-directory mhspool-spool-directory) group "/"))
|
||
|
||
(defun mhspool-replace-chars-in-string (string from to)
|
||
"Replace characters in STRING from FROM to TO."
|
||
(let ((string (substring string 0)) ;Copy string.
|
||
(len (length string))
|
||
(idx 0))
|
||
;; Replace all occurrences of FROM with TO.
|
||
(while (< idx len)
|
||
(if (= (aref string idx) from)
|
||
(aset string idx to))
|
||
(setq idx (1+ idx)))
|
||
string
|
||
))
|
||
|
||
|
||
;; Methods for listing files in folders.
|
||
|
||
(defun mhspool-list-folders-using-ls (directory)
|
||
"List files in folders under DIRECTORY using 'ls'."
|
||
(apply 'call-process
|
||
"ls" nil t nil
|
||
(append mhspool-list-directory-switches (list directory))))
|
||
|
||
;; Basic ideas by tanaka@flab.fujitsu.co.jp (Hiroshi TANAKA)
|
||
|
||
(defun mhspool-list-folders-using-sh (directory)
|
||
"List files in folders under DIRECTORY using '/bin/sh'."
|
||
(let ((buffer (current-buffer))
|
||
(script (get-buffer-create " *MHSPOOL Shell Script Buffer*")))
|
||
(save-excursion
|
||
(save-restriction
|
||
(set-buffer script)
|
||
(erase-buffer)
|
||
;; /bin/sh script which does 'ls -R'.
|
||
(insert
|
||
"PS2=
|
||
ffind() {
|
||
cd $1; echo $1:
|
||
ls -1
|
||
echo
|
||
for j in `echo *[a-zA-Z]*`
|
||
do
|
||
if [ -d $1/$j ]; then
|
||
ffind $1/$j
|
||
fi
|
||
done
|
||
}
|
||
cd " directory "; ffind `pwd`; exit 0\n")
|
||
(call-process-region (point-min) (point-max) "sh" nil buffer nil)
|
||
))
|
||
(kill-buffer script)
|
||
))
|
||
|
||
(provide 'mhspool)
|
||
|
||
;;; mhspool.el ends here
|