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;;; planner-unix-mail.el --- Unix mailbox support for Planner
;; Copyright (C) 2004, 2008 Frederik Fouvry <fouvry@coli.uni-saarland.de>
;; Author: Frederik Fouvry <fouvry@coli.uni-saarland.de>
;; Keywords:
;; This file is part of Planner. It is not part of GNU Emacs.
;; Planner 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 3, or (at your option)
;; any later version.
;; Planner 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 Planner; see the file COPYING. If not, write to the
;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
;; Boston, MA 02110-1301, USA.
;;; Commentary:
;;;_ + Usage
;;
;; Place planner-unix-mail.el in your load path and add this to your .emacs:
;;
;; (require 'planner-unix-mail)
;;
;; Unix mailbox URLs are of the form
;;
;; mail://PATH/TO/INBOX/message-id
;;
;; Annotations will be of the form
;; [[mail://PATH/TO/INBOX/E1AyTpt-0000JR-LU%40sacha.ateneo.edu][E-mail from Sacha Chua]]
;;; Contributors:
;; Yann Hodique fixed a typo and helped port this to Muse.
;;; Code:
(require 'planner)
;;; Code:
;; This is (kind of) a combination of the "mid" and "file" (RFC 1738)
;; protocol.
(defconst planner-unix-mail-protocol-name "mail")
(defun planner-unix-mail-narrow-to-message ()
(save-match-data
(let ((b (or (and (looking-at "^From ") (point))
(re-search-backward "^From ")))
(e (progn
(re-search-forward "\n\n\\(?:From \\|\\'\\)" nil 'point)
(forward-line 0)
(point))))
(narrow-to-region b e))))
;; Encoding according to RFC 1738.
(defun planner-url-encode (string &optional reserved)
(save-match-data
(let ((chars (split-string string ""))
(newchars)
(not-to-encode (concat "\\(?:[0-9A-Za-z]\\|[$_.+!*'(),-]"
(if (and (stringp reserved)
(not (string= reserved "")))
(concat "\\|" reserved)
"")
"\\)")))
(while chars
(setq newchars
(cons (if (string-match not-to-encode (car chars))
(car chars)
(format "%%%x" (string-to-char (car chars))))
newchars)
chars (cdr chars)))
(eval (cons 'concat (nreverse newchars))))))
;; Decoding according to RFC 1738
(defun planner-url-decode (string)
(save-match-data
(let* ((parts (split-string string "%"))
(newparts)
(ignore))
(unless (string-match "^%" string)
(setq ignore (car parts)
parts (cdr parts)))
(while parts
(when (string-match "^\\(..\\)" (car parts))
(setq newparts (cons (replace-match
(char-to-string
(string-to-number (match-string 1 (car parts))
16))
nil t (car parts) 1)
newparts)))
(setq parts (cdr parts)))
(eval (cons 'concat (append (when ignore (list ignore))
(nreverse newparts)))))))
;;;###autoload
(defun planner-unix-mail-annotation-from-mail ()
"Return an annotation for the current message.
This function can be added to `planner-annotation-functions'."
(save-match-data
;; This test replaces the major-mode test.
(when (save-excursion
(save-restriction
(widen)
(and (goto-char (point-min))
(re-search-forward "\\`From " nil t)
(goto-char (- (point-max) 3))
(re-search-forward "\n\n\\'" nil t))))
(save-excursion
(save-restriction
(planner-unix-mail-narrow-to-message)
(planner-make-link
(concat planner-unix-mail-protocol-name "://"
(buffer-file-name) "/"
;; Format is defined on RFC 2111 ("/" is reserved,
;; but should not be used because of the presence
;; of the file path)
(let* ((mid (mail-fetch-field "message-id")))
(if (stringp mid)
(if (string-match "^<\\(.+\\)>$" mid)
(planner-url-encode (match-string 1 mid) "[/]")
(error "Mal-formed Message-Id header field encountered"))
;; From_ header could be used as a backup
(error "No Message-Id header field found in this message"))))
(if (and planner-ignored-from-addresses
(string-match planner-ignored-from-addresses
(mail-fetch-field "from"))
(mail-fetch-field "to")) ; May be missing
(concat "E-mail to " (planner-get-name-from-address
(mail-fetch-field "to")))
(concat "E-mail from " (planner-get-name-from-address
(mail-fetch-field "from"))))
t))))))
;;;###autoload
(defun planner-unix-mail-browse-url (url)
"If this is an UNIX-MAIL URL, jump to it."
(save-match-data
(when (string-match (concat "\\`" planner-unix-mail-protocol-name
"://\\(.+\\)/\\(.+?\\)$") url)
(let* ((message-id (planner-url-decode (match-string 2 url)))
(file (match-string 1 url))
(point (save-excursion
(save-window-excursion
(find-file file)
(save-restriction
(widen)
(goto-char (point-max))
(re-search-backward
(concat "^Message-Id:[[:space:]]+<"
(regexp-quote message-id) ">")
nil t))))))
(if point
(progn
(find-file file)
(goto-char point)
(re-search-backward "^From ")
(recenter 0))
(error "Message not found"))))))
(planner-add-protocol (concat planner-unix-mail-protocol-name "://")
'planner-unix-mail-browse-url nil)
(add-hook 'planner-annotation-functions
'planner-unix-mail-annotation-from-mail)
(custom-add-option 'planner-annotation-functions
'planner-unix-mail-annotation-from-rmail)
(planner-update-wiki-project)
(provide 'planner-unix-mail)
;;
;; Local Variables:
;; indent-tabs-mode: t
;; tab-width: 8
;; End:
|
