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 (if (boundp 'gnus-article-x-face-too-ugly)
47 gnus-article-x-face-too-ugly)
48 "Regexp matching posters whose avatar shouldn't be shown automatically."
49 :type '(choice regexp (const nil))
51 :group 'gnus-gravatar)
53 (defun gnus-gravatar-transform-address (header category)
54 (gnus-with-article-headers
56 (mail-header-parse-addresses
57 ;; mail-header-parse-addresses does not work (reliably) on
61 (mail-encode-encoded-word-string
62 (or (mail-fetch-field header) "")))
63 (mail-fetch-field header)))))
64 (let ((gravatar-size gnus-gravatar-size))
65 (dolist (address addresses)
66 (unless (and gnus-gravatar-too-ugly
67 (or (string-match gnus-gravatar-too-ugly
70 (string-match gnus-gravatar-too-ugly
76 (list header address category)))))))))
78 (defun gnus-gravatar-insert (gravatar header address category)
79 "Insert GRAVATAR for ADDRESS in HEADER in current article buffer.
80 Set image category to CATEGORY."
81 (unless (eq gravatar 'error)
82 (gnus-with-article-headers
83 ;; The buffer can be gone at this time
84 (when (buffer-live-p (current-buffer))
85 (gnus-article-goto-header header)
86 (mail-header-narrow-to-field)
87 (let ((real-name (cdr address))
88 (mail-address (car address)))
89 (when (if real-name ; have a realname, go for it!
90 (and (search-forward real-name nil t)
91 (search-backward real-name nil t))
92 (and (search-forward mail-address nil t)
93 (search-backward mail-address nil t)))
94 (goto-char (1- (point)))
95 ;; If we're on the " quoting the name, go backward
96 (when (looking-at "[\"<]")
97 (goto-char (1- (point))))
98 ;; Do not do anything if there's already a gravatar. This can
99 ;; happens if the buffer has been regenerated in the mean time, for
100 ;; example we were fetching someaddress, and then we change to
101 ;; another mail with the same someaddress.
102 (unless (memq 'gnus-gravatar (text-properties-at (point)))
103 (let ((inhibit-read-only t)
105 (unless (featurep 'xemacs)
106 (setq gravatar (append gravatar gnus-gravatar-properties)))
107 (gnus-put-image gravatar nil category)
108 (put-text-property point (point) 'gnus-gravatar address)
109 (gnus-add-wash-type category)
110 (gnus-add-image category gravatar)))))))))
113 (defun gnus-treat-from-gravatar ()
114 "Display gravatar in the From header.
115 If gravatar is already displayed, remove it."
117 (gnus-with-article-buffer
118 (if (memq 'from-gravatar gnus-article-wash-types)
119 (gnus-delete-images 'from-gravatar)
120 (let ((gnus-gravatar-too-ugly
121 (unless buffer-read-only ;; When type `W D g'
122 gnus-gravatar-too-ugly)))
123 (gnus-gravatar-transform-address "from" 'from-gravatar)))))
126 (defun gnus-treat-mail-gravatar ()
127 "Display gravatars in the Cc and To headers.
128 If gravatars are already displayed, remove them."
130 (gnus-with-article-buffer
131 (if (memq 'mail-gravatar gnus-article-wash-types)
132 (gnus-delete-images 'mail-gravatar)
133 (let ((gnus-gravatar-too-ugly
134 (unless buffer-read-only ;; When type `W D h'
135 gnus-gravatar-too-ugly)))
136 (gnus-gravatar-transform-address "cc" 'mail-gravatar)
137 (gnus-gravatar-transform-address "to" 'mail-gravatar)))))
139 (provide 'gnus-gravatar)
141 ;;; gnus-gravatar.el ends here