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| | ;;; ol-rmail.el --- Links to Rmail Messages -*- lexical-binding: t; -*-
;; Copyright (C) 2004-2023 Free Software Foundation, Inc.
;; Author: Carsten Dominik <carsten.dominik@gmail.com>
;; Keywords: outlines, hypermedia, calendar, wp
;; URL: https://orgmode.org
;;
;; 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 3 of the License, 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. If not, see <https://www.gnu.org/licenses/>.
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;
;;; Commentary:
;; This file implements links to Rmail messages from within Org mode.
;; Org mode loads this module by default - if this is not what you
;; want, configure the variable `org-modules'.
;;; Code:
(require 'org-macs)
(unless (version< emacs-version "29")
(org-assert-version))
(require 'ol)
;; Declare external functions and variables
(declare-function rmail-show-message "rmail" (&optional n no-summary))
(declare-function rmail-what-message "rmail" (&optional pos))
(declare-function rmail-toggle-header "rmail" (&optional arg))
(declare-function rmail "rmail" (&optional file-name-arg))
(declare-function rmail-widen "rmail" ())
(defvar rmail-current-message) ; From rmail.el
(defvar rmail-header-style) ; From rmail.el
(defvar rmail-file-name) ; From rmail.el
;; Install the link type
(org-link-set-parameters "rmail"
:follow #'org-rmail-open
:store #'org-rmail-store-link)
;; Implementation
(defun org-rmail-store-link ()
"Store a link to an Rmail folder or message."
(when (or (eq major-mode 'rmail-mode)
(eq major-mode 'rmail-summary-mode))
(save-window-excursion
(save-restriction
(when (eq major-mode 'rmail-summary-mode)
(rmail-show-message rmail-current-message))
(when (fboundp 'rmail-narrow-to-non-pruned-header)
(rmail-narrow-to-non-pruned-header))
(when (eq rmail-header-style 'normal)
(rmail-toggle-header -1))
(let* ((folder buffer-file-name)
(message-id (mail-fetch-field "message-id"))
(from (mail-fetch-field "from"))
(to (mail-fetch-field "to"))
(subject (mail-fetch-field "subject"))
(date (mail-fetch-field "date"))
desc link)
(org-link-store-props
:type "rmail" :from from :to to :date date
:subject subject :message-id message-id)
(setq message-id (org-unbracket-string "<" ">" message-id))
(setq desc (org-link-email-description))
(setq link (concat "rmail:" folder "#" message-id))
(org-link-add-props :link link :description desc)
(rmail-show-message rmail-current-message)
link)))))
(defun org-rmail-open (path _)
"Follow an Rmail message link to the specified PATH."
(let (folder article)
(if (not (string-match "\\`\\([^#]+\\)\\(#\\(.*\\)\\)?" path))
(error "Error in Rmail link"))
(setq folder (match-string 1 path)
article (match-string 3 path))
(org-rmail-follow-link folder article)))
(defun org-rmail-follow-link (folder article)
"Follow an Rmail link to FOLDER and ARTICLE."
(require 'rmail)
(cond ((null article) (setq article ""))
((stringp article)
(setq article (org-link-add-angle-brackets article)))
(t (user-error "Wrong RMAIL link format")))
(let (message-number)
(save-excursion
(save-window-excursion
(rmail (if (string= folder "RMAIL") rmail-file-name folder))
(setq message-number
(save-restriction
(rmail-widen)
(goto-char (point-max))
(if (re-search-backward
(concat "^Message-ID:\\s-+" (regexp-quote article))
nil t)
(rmail-what-message))))))
(if message-number
(progn
(rmail (if (string= folder "RMAIL") rmail-file-name folder))
(rmail-show-message message-number)
message-number)
(error "Message not found"))))
(provide 'ol-rmail)
;;; ol-rmail.el ends here
|