--- /dev/null
+;;; gnus-gravatar.el --- Gnus Gravatar support
+
+;; Copyright (C) 2010-2016 Free Software Foundation, Inc.
+
+;; Author: Julien Danjou <julien@danjou.info>
+;; Keywords: news
+
+;; 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:
+
+;;; Code:
+
+(require 'gravatar)
+(require 'gnus-art)
+(require 'mail-extr) ;; Because of binding `mail-extr-disable-voodoo'.
+
+(defgroup gnus-gravatar nil
+ "Gnus Gravatar."
+ :group 'gnus-visual)
+
+(defcustom gnus-gravatar-size nil
+ "How big should gravatars be displayed.
+If nil, default to `gravatar-size'."
+ :type '(choice (const nil) integer)
+ :version "24.1"
+ :group 'gnus-gravatar)
+
+(defcustom gnus-gravatar-properties '(:ascent center :relief 1)
+ "List of image properties applied to Gravatar images."
+ :type 'sexp
+ :version "24.1"
+ :group 'gnus-gravatar)
+
+(defcustom gnus-gravatar-too-ugly gnus-article-x-face-too-ugly
+ "Regexp matching posters whose avatar shouldn't be shown automatically."
+ :type '(choice regexp (const nil))
+ :version "24.1"
+ :group 'gnus-gravatar)
+
+(defun gnus-gravatar-transform-address (header category &optional force)
+ (gnus-with-article-headers
+ (let* ((mail-extr-disable-voodoo t)
+ (mail-extr-ignore-realname-equals-mailbox-name nil)
+ (addresses (mail-extract-address-components
+ (or (mail-fetch-field header) "") t))
+ (gravatar-size (or gnus-gravatar-size gravatar-size))
+ name)
+ (dolist (address addresses)
+ (when (and (setq name (car address))
+ (string-match "\\` +" name))
+ (setcar address (setq name (substring name (match-end 0)))))
+ (when (or force
+ (not (and gnus-gravatar-too-ugly
+ (or (string-match gnus-gravatar-too-ugly
+ (or (cadr address) ""))
+ (and name
+ (string-match gnus-gravatar-too-ugly
+ name))))))
+ (ignore-errors
+ (gravatar-retrieve
+ (cadr address)
+ 'gnus-gravatar-insert
+ (list header address category))))))))
+
+(defun gnus-gravatar-insert (gravatar header address category)
+ "Insert GRAVATAR for ADDRESS in HEADER in current article buffer.
+Set image category to CATEGORY."
+ (unless (eq gravatar 'error)
+ (gnus-with-article-buffer
+ (let ((mark (point-marker))
+ (inhibit-point-motion-hooks t)
+ (case-fold-search t))
+ (save-restriction
+ (article-narrow-to-head)
+ ;; The buffer can be gone at this time
+ (when (buffer-live-p (current-buffer))
+ (gnus-article-goto-header header)
+ (mail-header-narrow-to-field)
+ (let ((real-name (car address))
+ (mail-address (cadr address)))
+ (when (if real-name
+ (re-search-forward
+ (concat (gnus-replace-in-string
+ (regexp-quote real-name) "[\t ]+" "[\t\n ]+")
+ "\\|"
+ (regexp-quote mail-address))
+ nil t)
+ (search-forward mail-address nil t))
+ (goto-char (1- (match-beginning 0)))
+ ;; If we're on the " quoting the name, go backward
+ (when (looking-at "[\"<]")
+ (goto-char (1- (point))))
+ ;; Do not do anything if there's already a gravatar. This can
+ ;; happens if the buffer has been regenerated in the mean time, for
+ ;; example we were fetching someaddress, and then we change to
+ ;; another mail with the same someaddress.
+ (unless (memq 'gnus-gravatar (text-properties-at (point)))
+ (let ((point (point)))
+ (unless (featurep 'xemacs)
+ (setq gravatar (append gravatar gnus-gravatar-properties)))
+ (gnus-put-image gravatar (buffer-substring (point) (1+ point)) category)
+ (put-text-property point (point) 'gnus-gravatar address)
+ (gnus-add-wash-type category)
+ (gnus-add-image category gravatar)))))))
+ (goto-char (marker-position mark))))))
+
+;;;###autoload
+(defun gnus-treat-from-gravatar (&optional force)
+ "Display gravatar in the From header.
+If gravatar is already displayed, remove it."
+ (interactive (list t)) ;; When type `W D g'
+ (gnus-with-article-buffer
+ (if (memq 'from-gravatar gnus-article-wash-types)
+ (gnus-delete-images 'from-gravatar)
+ (gnus-gravatar-transform-address "from" 'from-gravatar force))))
+
+;;;###autoload
+(defun gnus-treat-mail-gravatar (&optional force)
+ "Display gravatars in the Cc and To headers.
+If gravatars are already displayed, remove them."
+ (interactive (list t)) ;; When type `W D h'
+ (gnus-with-article-buffer
+ (if (memq 'mail-gravatar gnus-article-wash-types)
+ (gnus-delete-images 'mail-gravatar)
+ (gnus-gravatar-transform-address "cc" 'mail-gravatar force)
+ (gnus-gravatar-transform-address "to" 'mail-gravatar force))))
+
+(provide 'gnus-gravatar)
+
+;;; gnus-gravatar.el ends here
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