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Daniel Weschke
2022-01-04 21:35:17 +01:00
parent 1d5275c946
commit 8de00e5202
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;;; ol-wl.el --- Links to Wanderlust messages
;; Copyright (C) 2004-2021 Free Software Foundation, Inc.
;; Author: Tokuya Kameshima <kames at fa2 dot so-net dot ne dot jp>
;; David Maus <dmaus at ictsoc dot de>
;; Keywords: outlines, hypermedia, calendar, wp
;; Homepage: https://orgmode.org
;;
;; This file is not part of GNU Emacs.
;;
;; This program 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.
;; This program 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 Wanderlust 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 'ol)
(require 'org)
(defgroup org-wl nil
"Options concerning the Wanderlust link."
:tag "Org Startup"
:group 'org-link)
(defcustom org-wl-link-to-refile-destination t
"Create a link to the refile destination if the message is marked as refile."
:group 'org-wl
:type 'boolean)
(defcustom org-wl-link-remove-filter nil
"Remove filter condition if message is filter folder."
:group 'org-wl
:type 'boolean)
(defcustom org-wl-shimbun-prefer-web-links nil
"If non-nil create web links for shimbun messages."
:group 'org-wl
:type 'boolean)
(defcustom org-wl-nntp-prefer-web-links nil
"If non-nil create web links for nntp messages.
When folder name contains string \"gmane\" link to gmane,
googlegroups otherwise."
:type 'boolean
:group 'org-wl)
(defcustom org-wl-disable-folder-check t
"Disable check for new messages when open a link."
:type 'boolean
:group 'org-wl)
(defcustom org-wl-namazu-default-index nil
"Default namazu search index."
:type '(choice (const nil) (directory))
:group 'org-wl)
;; Declare external functions and variables
(declare-function elmo-folder-exists-p "ext:elmo" (folder) t)
(declare-function elmo-message-entity-field "ext:elmo-msgdb"
(entity field &optional type))
(declare-function elmo-message-field "ext:elmo"
(folder number field &optional type) t)
(declare-function elmo-msgdb-overview-get-entity "ext:elmo" (id msgdb) t)
;; Backward compatibility to old version of wl
(declare-function wl "ext:wl" () t)
(declare-function wl-summary-buffer-msgdb "ext:wl-folder" () t)
(declare-function wl-summary-jump-to-msg-by-message-id "ext:wl-summary"
(&optional id))
(declare-function wl-summary-jump-to-msg "ext:wl-summary"
(&optional number beg end))
(declare-function wl-summary-line-from "ext:wl-summary" ())
(declare-function wl-summary-line-subject "ext:wl-summary" ())
(declare-function wl-summary-message-number "ext:wl-summary" ())
(declare-function wl-summary-redisplay "ext:wl-summary" (&optional arg))
(declare-function wl-summary-registered-temp-mark "ext:wl-action" (number))
(declare-function wl-folder-goto-folder-subr "ext:wl-folder"
(&optional folder sticky))
(declare-function wl-folder-get-petname "ext:wl-folder" (name))
(declare-function wl-folder-get-entity-from-buffer "ext:wl-folder"
(&optional getid))
(declare-function wl-folder-buffer-group-p "ext:wl-folder")
(defvar wl-init)
(defvar wl-summary-buffer-elmo-folder)
(defvar wl-summary-buffer-folder-name)
(defvar wl-folder-group-regexp)
(defvar wl-auto-check-folder-name)
(defvar elmo-nntp-default-server)
(defconst org-wl-folder-types
'(("%" . imap) ("-" . nntp) ("+" . mh) ("." . maildir)
("=" . spool) ("$" . archive) ("&" . pop) ("@" . shimbun)
("rss" . rss) ("[" . search) ("*" . multi) ("/" . filter)
("|" . pipe) ("'" . internal) )
"List of folder indicators. See Wanderlust manual, section 3.")
;; Install the link type
(org-link-set-parameters "wl" :follow #'org-wl-open :store #'org-wl-store-link)
;; Implementation
(defun org-wl-folder-type (folder)
"Return symbol that indicates the type of FOLDER.
FOLDER is the wanderlust folder name. The first character of the
folder name determines the folder type."
(let* ((indicator (substring folder 0 1))
(type (cdr (assoc indicator org-wl-folder-types))))
;; maybe access or file folder
(when (not type)
(setq type
(cond
((and (>= (length folder) 5)
(string= (substring folder 0 5) "file:"))
'file)
((and (>= (length folder) 7)
(string= (substring folder 0 7) "access:"))
'access)
(t
nil))))
type))
(defun org-wl-message-field (field entity)
"Return content of FIELD in ENTITY.
FIELD is a symbol of a rfc822 message header field.
ENTITY is a message entity."
(let ((content (elmo-message-entity-field entity field 'string)))
(if (listp content) (car content) content)))
(defun org-wl-store-link ()
"Store a link to a WL message or folder."
(unless (eobp)
(cond
((memq major-mode '(wl-summary-mode mime-view-mode))
(org-wl-store-link-message))
((eq major-mode 'wl-folder-mode)
(org-wl-store-link-folder))
(t
nil))))
(defun org-wl-store-link-folder ()
"Store a link to a WL folder."
(let* ((folder (wl-folder-get-entity-from-buffer))
(petname (wl-folder-get-petname folder))
(link (concat "wl:" folder)))
(save-excursion
(beginning-of-line)
(unless (and (wl-folder-buffer-group-p)
(looking-at wl-folder-group-regexp))
(org-store-link-props :type "wl" :description petname
:link link)
link))))
(defun org-wl-store-link-message ()
"Store a link to a WL message."
(save-excursion
(let ((buf (if (eq major-mode 'wl-summary-mode)
(current-buffer)
(and (boundp 'wl-message-buffer-cur-summary-buffer)
wl-message-buffer-cur-summary-buffer))))
(when buf
(with-current-buffer buf
(let* ((msgnum (wl-summary-message-number))
(mark-info (wl-summary-registered-temp-mark msgnum))
(folder-name
(if (and org-wl-link-to-refile-destination
mark-info
(equal (nth 1 mark-info) "o")) ; marked as refile
(nth 2 mark-info)
wl-summary-buffer-folder-name))
(folder-type (org-wl-folder-type folder-name))
(wl-message-entity
(if (fboundp 'elmo-message-entity)
(elmo-message-entity
wl-summary-buffer-elmo-folder msgnum)
(elmo-msgdb-overview-get-entity
msgnum (wl-summary-buffer-msgdb))))
(message-id
(org-wl-message-field 'message-id wl-message-entity))
(message-id-no-brackets
(org-unbracket-string "<" ">" message-id))
(from (org-wl-message-field 'from wl-message-entity))
(to (org-wl-message-field 'to wl-message-entity))
(xref (org-wl-message-field 'xref wl-message-entity))
(subject (org-wl-message-field 'subject wl-message-entity))
(date (org-wl-message-field 'date wl-message-entity))
desc link)
;; remove text properties of subject string to avoid possible bug
;; when formatting the subject
;; (Emacs bug #5306, fixed)
(set-text-properties 0 (length subject) nil subject)
;; maybe remove filter condition
(when (and (eq folder-type 'filter) org-wl-link-remove-filter)
(while (eq (org-wl-folder-type folder-name) 'filter)
(setq folder-name
(replace-regexp-in-string "^/[^/]+/" "" folder-name))))
;; maybe create http link
(cond
((and (eq folder-type 'shimbun)
org-wl-shimbun-prefer-web-links xref)
(org-store-link-props :type "http" :link xref :description subject
:from from :to to :message-id message-id
:message-id-no-brackets message-id-no-brackets
:subject subject))
((and (eq folder-type 'nntp) org-wl-nntp-prefer-web-links)
(setq link
(format
(if (string-match-p "gmane\\." folder-name)
"http://mid.gmane.org/%s"
"https://groups.google.com/groups/search?as_umsgid=%s")
(url-encode-url message-id)))
(org-store-link-props :type "http" :link link :description subject
:from from :to to :message-id message-id
:message-id-no-brackets message-id-no-brackets
:subject subject))
(t
(org-store-link-props :type "wl" :from from :to to
:subject subject :message-id message-id
:message-id-no-brackets message-id-no-brackets)
(setq desc (org-email-link-description))
(setq link (concat "wl:" folder-name "#" message-id-no-brackets))
(org-add-link-props :link link :description desc)))
(org-add-link-props :date date)
(or link xref)))))))
(defun org-wl-open-nntp (path)
"Follow the nntp: link specified by PATH."
(let* ((spec (split-string path "/"))
(server (split-string (nth 2 spec) "@"))
(group (nth 3 spec))
(article (nth 4 spec)))
(org-wl-open
(concat "-" group ":" (if (cdr server)
(car (split-string (car server) ":"))
"")
(if (string= elmo-nntp-default-server (nth 2 spec))
""
(concat "@" (or (cdr server) (car server))))
(if article (concat "#" article) "")))))
(defun org-wl-open (path &rest _)
"Follow the WL message link specified by PATH.
When called with one prefix, open message in namazu search folder
with `org-wl-namazu-default-index' as search index. When called
with two prefixes or `org-wl-namazu-default-index' is nil, ask
for namazu index."
(require 'wl)
(let ((wl-auto-check-folder-name
(if org-wl-disable-folder-check
'none
wl-auto-check-folder-name)))
(unless wl-init (wl))
;; XXX: The imap-uw's MH folder names start with "%#".
(if (not (string-match "\\`\\(\\(?:%#\\)?[^#]+\\)\\(#\\(.*\\)\\)?" path))
(error "Error in Wanderlust link"))
(let ((folder (match-string 1 path))
(article (match-string 3 path)))
;; maybe open message in namazu search folder
(when current-prefix-arg
(setq folder (concat "[" article "]"
(if (and (equal current-prefix-arg '(4))
org-wl-namazu-default-index)
org-wl-namazu-default-index
(read-directory-name "Namazu index: ")))))
(if (not (elmo-folder-exists-p (with-no-warnings
(wl-folder-get-elmo-folder folder))))
(error "No such folder: %s" folder))
(let ((old-buf (current-buffer))
(old-point (point-marker)))
(wl-folder-goto-folder-subr folder)
(with-current-buffer old-buf
;; XXX: `wl-folder-goto-folder-subr' moves point to the
;; beginning of the current line. So, restore the point
;; in the old buffer.
(goto-char old-point))
(when article
(if (string-match-p "@" article)
(wl-summary-jump-to-msg-by-message-id (org-link-add-angle-brackets
article))
(or (wl-summary-jump-to-msg (string-to-number article))
(error "No such message: %s" article)))
(wl-summary-redisplay))))))
(provide 'ol-wl)
;;; ol-wl.el ends here