1 ;;; gnus-gravatar.el --- Gnus Gravatar support
3 ;; Copyright (C) 2010 Free Software Foundation, Inc.
5 ;; Author: Julien Danjou <julien@danjou.info>
8 ;; This file is part of GNU Emacs.
10 ;; GNU Emacs is free software: you can redistribute it and/or modify
11 ;; it under the terms of the GNU General Public License as published by
12 ;; the Free Software Foundation, either version 3 of the License, or
13 ;; (at your option) any later version.
15 ;; GNU Emacs is distributed in the hope that it will be useful,
16 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 ;; GNU General Public License for more details.
20 ;; You should have received a copy of the GNU General Public License
21 ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
30 (defgroup gnus-gravatar nil
34 (defcustom gnus-gravatar-size 32
35 "How big should gravatars be displayed."
38 :group 'gnus-gravatar)
40 (defcustom gnus-gravatar-properties '(:ascent center :relief 1)
41 "List of image properties applied to Gravatar images."
44 :group 'gnus-gravatar)
46 (defcustom gnus-gravatar-too-ugly gnus-article-x-face-too-ugly
47 "Regexp matching posters whose avatar shouldn't be shown automatically."
48 :type '(choice regexp (const nil))
50 :group 'gnus-gravatar)
52 (defun gnus-gravatar-transform-address (header category)
53 (gnus-with-article-headers
55 (mail-header-parse-addresses
56 ;; mail-header-parse-addresses does not work (reliably) on
60 (mail-encode-encoded-word-string
61 (or (mail-fetch-field header) "")))
62 (mail-fetch-field header)))))
63 (let ((gravatar-size gnus-gravatar-size))
64 (dolist (address addresses)
65 (unless (and gnus-gravatar-too-ugly
66 (or (string-match gnus-gravatar-too-ugly
69 (string-match gnus-gravatar-too-ugly
75 (list header address category)))))))))
77 (defun gnus-gravatar-insert (gravatar header address category)
78 "Insert GRAVATAR for ADDRESS in HEADER in current article buffer.
79 Set image category to CATEGORY."
80 (unless (eq gravatar 'error)
81 (gnus-with-article-headers
82 ;; The buffer can be gone at this time
83 (when (buffer-live-p (current-buffer))
84 (gnus-article-goto-header header)
85 (mail-header-narrow-to-field)
86 (let ((real-name (cdr address))
87 (mail-address (car address)))
88 (when (if real-name ; have a realname, go for it!
89 (and (search-forward real-name nil t)
90 (search-backward real-name nil t))
91 (and (search-forward mail-address nil t)
92 (search-backward mail-address nil t)))
93 (goto-char (1- (point)))
94 ;; If we're on the " quoting the name, go backward
95 (when (looking-at "[\"<]")
96 (goto-char (1- (point))))
97 ;; Do not do anything if there's already a gravatar. This can
98 ;; happens if the buffer has been regenerated in the mean time, for
99 ;; example we were fetching someaddress, and then we change to
100 ;; another mail with the same someaddress.
101 (unless (memq 'gnus-gravatar (text-properties-at (point)))
102 (let ((inhibit-read-only t)
104 (unless (featurep 'xemacs)
105 (setq gravatar (append gravatar gnus-gravatar-properties)))
106 (gnus-put-image gravatar nil category)
107 (put-text-property point (point) 'gnus-gravatar address)
108 (gnus-add-wash-type category)
109 (gnus-add-image category gravatar)))))))))
112 (defun gnus-treat-from-gravatar ()
113 "Display gravatar in the From header.
114 If gravatar is already displayed, remove it."
116 (gnus-with-article-buffer
117 (if (memq 'from-gravatar gnus-article-wash-types)
118 (gnus-delete-images 'from-gravatar)
119 (let ((gnus-gravatar-too-ugly
120 (unless buffer-read-only ;; When type `W D g'
121 gnus-gravatar-too-ugly)))
122 (gnus-gravatar-transform-address "from" 'from-gravatar)))))
125 (defun gnus-treat-mail-gravatar ()
126 "Display gravatars in the Cc and To headers.
127 If gravatars are already displayed, remove them."
129 (gnus-with-article-buffer
130 (if (memq 'mail-gravatar gnus-article-wash-types)
131 (gnus-delete-images 'mail-gravatar)
132 (let ((gnus-gravatar-too-ugly
133 (unless buffer-read-only ;; When type `W D h'
134 gnus-gravatar-too-ugly)))
135 (gnus-gravatar-transform-address "cc" 'mail-gravatar)
136 (gnus-gravatar-transform-address "to" 'mail-gravatar)))))
138 (provide 'gnus-gravatar)
140 ;;; gnus-gravatar.el ends here