1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
|
;;; org-gnus.el --- Support for links to Gnus groups and messages from within Org-mode
;; Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010
;; Free Software Foundation, Inc.
;; Author: Carsten Dominik <carsten at orgmode dot org>
;; Tassilo Horn <tassilo at member dot fsf dot org>
;; Keywords: outlines, hypermedia, calendar, wp
;; Homepage: http://orgmode.org
;; Version: 6.33x
;;
;; 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 <http://www.gnu.org/licenses/>.
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;
;;; Commentary:
;; This file implements links to Gnus groups and 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)
(eval-when-compile (require 'gnus-sum))
;; Declare external functions and variables
(declare-function message-fetch-field "message" (header &optional not-all))
(declare-function message-narrow-to-head-1 "message" nil)
;; The following line suppresses a compiler warning stemming from gnus-sum.el
(declare-function gnus-summary-last-subject "gnus-sum" nil)
;; Customization variables
(when (fboundp 'defvaralias)
(defvaralias 'org-usenet-links-prefer-google 'org-gnus-prefer-web-links))
(defcustom org-gnus-prefer-web-links nil
"Non-nil means, `org-store-link' will create web links to Google groups.
When nil, Gnus will be used for such links.
Using a prefix arg to the command \\[org-store-link] (`org-store-link')
negates this setting for the duration of the command."
:group 'org-link-store
:type 'boolean)
;; Install the link type
(org-add-link-type "gnus" 'org-gnus-open)
(add-hook 'org-store-link-functions 'org-gnus-store-link)
;; Implementation
(defun org-gnus-group-link (group)
"Create a link to the Gnus group GROUP.
If GROUP is a newsgroup and `org-gnus-prefer-web-links' is
non-nil, create a link to groups.google.com or gmane.org.
Otherwise create a link to the group inside Gnus.
If `org-store-link' was called with a prefix arg the meaning of
`org-gnus-prefer-web-links' is reversed."
(let ((unprefixed-group (replace-regexp-in-string "^[^:]+:" "" group)))
(if (and (string-match "^nntp" group) ;; Only for nntp groups
(org-xor current-prefix-arg
org-gnus-prefer-web-links))
(org-make-link (if (string-match "gmane" unprefixed-group)
"http://news.gmane.org/"
"http://groups.google.com/group/")
unprefixed-group)
(org-make-link "gnus:" group))))
(defun org-gnus-article-link (group newsgroups message-id x-no-archive)
"Create a link to a Gnus article.
The article is specified by its MESSAGE-ID. Additional
parameters are the Gnus GROUP, the NEWSGROUPS the article was
posted to and the X-NO-ARCHIVE header value of that article.
If GROUP is a newsgroup and `org-gnus-prefer-web-links' is
non-nil, create a link to groups.google.com or gmane.org.
Otherwise create a link to the article inside Gnus.
If `org-store-link' was called with a prefix arg the meaning of
`org-gnus-prefer-web-links' is reversed."
(if (and (org-xor current-prefix-arg org-gnus-prefer-web-links)
newsgroups ;; Make web links only for nntp groups
(not x-no-archive)) ;; and if X-No-Archive isn't set.
(format (if (string-match "gmane\\." newsgroups)
"http://mid.gmane.org/%s"
"http://groups.google.com/groups/search?as_umsgid=%s")
(org-fixup-message-id-for-http message-id))
(org-make-link "gnus:" group "#" message-id)))
(defun org-gnus-store-link ()
"Store a link to a Gnus folder or message."
(cond
((eq major-mode 'gnus-group-mode)
(let* ((group (cond ((fboundp 'gnus-group-group-name) ; depending on Gnus
(gnus-group-group-name)) ; version
((fboundp 'gnus-group-name)
(gnus-group-name))
(t "???")))
desc link)
(when group
(org-store-link-props :type "gnus" :group group)
(setq desc (org-gnus-group-link group)
link desc)
(org-add-link-props :link link :description desc)
link)))
((memq major-mode '(gnus-summary-mode gnus-article-mode))
(let* ((group gnus-newsgroup-name)
(header (with-current-buffer gnus-summary-buffer
(gnus-summary-article-header)))
(from (mail-header-from header))
(message-id (org-remove-angle-brackets (mail-header-id header)))
(date (mail-header-date header))
(subject (mail-header-subject header))
(to (cdr (assq 'To (mail-header-extra header))))
newsgroups x-no-archive desc link)
;; Fetching an article is an expensive operation; newsgroup and
;; x-no-archive are only needed for web links.
(when (org-xor current-prefix-arg org-gnus-prefer-web-links)
;; Make sure the original article buffer is up-to-date
(save-window-excursion (gnus-summary-select-article))
(setq to (or to (gnus-fetch-original-field "To"))
newsgroups (gnus-fetch-original-field "Newsgroups")
x-no-archive (gnus-fetch-original-field "x-no-archive")))
(org-store-link-props :type "gnus" :from from :subject subject
:message-id message-id :group group :to to)
(setq desc (org-email-link-description)
link (org-gnus-article-link
group newsgroups message-id x-no-archive))
(org-add-link-props :link link :description desc)
link))))
(defun org-gnus-open (path)
"Follow the Gnus message or folder link specified by PATH."
(let (group article)
(if (not (string-match "\\`\\([^#]+\\)\\(#\\(.*\\)\\)?" path))
(error "Error in Gnus link"))
(setq group (match-string 1 path)
article (match-string 3 path))
(when group
(setq group (org-substring-no-properties group)))
(when article
(setq article (org-substring-no-properties article)))
(org-gnus-follow-link group article)))
(defun org-gnus-follow-link (&optional group article)
"Follow a Gnus link to GROUP and ARTICLE."
(require 'gnus)
(funcall (cdr (assq 'gnus org-link-frame-setup)))
(if gnus-other-frame-object (select-frame gnus-other-frame-object))
(when group
(setq group (org-substring-no-properties group)))
(when article
(setq article (org-substring-no-properties article)))
(cond ((and group article)
(gnus-activate-group group t)
(condition-case nil
(let ((articles 1)
group-opened)
(while (and (not group-opened)
;; stop on integer overflows
(> articles 0))
(setq group-opened (gnus-group-read-group articles nil group)
articles (if (< articles 16)
(1+ articles)
(* articles 2))))
(if group-opened
(gnus-summary-goto-article article nil t)
(message "Couldn't follow gnus link. %s"
"The summary couldn't be opened.")))
(quit (message "Couldn't follow gnus link. %s"
"The linked group is empty."))))
(group (gnus-group-jump-to-group group))))
(defun org-gnus-no-new-news ()
"Like `M-x gnus' but doesn't check for new news."
(if (not (gnus-alive-p)) (gnus)))
(provide 'org-gnus)
;; arch-tag: 512e0840-58fa-45b3-b456-71e10fa2376d
;;; org-gnus.el ends here
|
