+(defun gnus-picon-transform-address (header category)
+ (gnus-with-article-headers
+ (let ((addresses
+ (mail-header-parse-addresses
+ ;; mail-header-parse-addresses does not work (reliably) on
+ ;; decoded headers.
+ (or
+ (ignore-errors
+ (mail-encode-encoded-word-string
+ (or (mail-fetch-field header) "")))
+ (mail-fetch-field header))))
+ spec file point cache len)
+ (dolist (address addresses)
+ (setq address (car address))
+ (when (and (stringp address)
+ (setq spec (gnus-picon-split-address address)))
+ (if (setq cache (cdr (assoc address gnus-picon-cache)))
+ (setq spec cache)
+ (when (setq file (or (gnus-picon-find-face
+ address gnus-picon-user-directories)
+ (gnus-picon-find-face
+ (concat "unknown@"
+ (mapconcat
+ 'identity (cdr spec) "."))
+ gnus-picon-user-directories)))
+ (setcar spec (cons (gnus-picon-create-glyph file)
+ (car spec))))
+
+ (dotimes (i (- (length spec)
+ (if gnus-picon-inhibit-top-level-domains
+ 2 1)))
+ (when (setq file (gnus-picon-find-face
+ (concat "unknown@"
+ (mapconcat
+ 'identity (nthcdr (1+ i) spec) "."))
+ gnus-picon-domain-directories t))
+ (setcar (nthcdr (1+ i) spec)
+ (cons (gnus-picon-create-glyph file)
+ (nth (1+ i) spec)))))
+ (setq spec (nreverse spec))
+ (push (cons address spec) gnus-picon-cache))
+
+ (gnus-article-goto-header header)
+ (mail-header-narrow-to-field)
+ (case gnus-picon-style
+ (right
+ (when (= (length addresses) 1)
+ (setq len (apply '+ (mapcar (lambda (x)
+ (condition-case nil
+ (car (image-size (car x)))
+ (error 0))) spec)))
+ (when (> len 0)
+ (goto-char (point-at-eol))
+ (insert (propertize
+ " " 'display
+ (cons 'space
+ (list :align-to (- (window-width) 1 len))))))
+ (goto-char (point-at-eol))
+ (setq point (point-at-eol))
+ (dolist (image spec)
+ (unless (stringp image)
+ (goto-char point)
+ (gnus-picon-insert-glyph image category 'nostring)))))
+ (inline
+ (when (search-forward address nil t)
+ (delete-region (match-beginning 0) (match-end 0))
+ (setq point (point))
+ (while spec
+ (goto-char point)
+ (if (> (length spec) 2)
+ (insert ".")
+ (if (= (length spec) 2)
+ (insert "@")))
+ (gnus-picon-insert-glyph (pop spec) category))))))))))
+
+(defun gnus-picon-transform-newsgroups (header)
+ (interactive)
+ (gnus-with-article-headers
+ (gnus-article-goto-header header)
+ (mail-header-narrow-to-field)
+ (let ((groups (message-tokenize-header (mail-fetch-field header)))
+ spec file point)
+ (dolist (group groups)
+ (unless (setq spec (cdr (assoc group gnus-picon-cache)))
+ (setq spec (nreverse (split-string group "[.]")))
+ (dotimes (i (length spec))
+ (when (setq file (gnus-picon-find-face
+ (concat "unknown@"
+ (mapconcat
+ 'identity (nthcdr i spec) "."))
+ gnus-picon-news-directories t))
+ (setcar (nthcdr i spec)
+ (cons (gnus-picon-create-glyph file)
+ (nth i spec)))))
+ (push (cons group spec) gnus-picon-cache))
+ (when (search-forward group nil t)
+ (delete-region (match-beginning 0) (match-end 0))
+ (save-restriction
+ (narrow-to-region (point) (point))
+ (while spec
+ (goto-char (point-min))
+ (if (> (length spec) 1)
+ (insert "."))
+ (gnus-picon-insert-glyph (pop spec) 'newsgroups-picon))
+ (goto-char (point-max))))))))
+
+;;; Commands:
+
+;; #### NOTE: the test for buffer-read-only is the same as in
+;; article-display-[x-]face. See the comment up there.
+
+;;;###autoload
+(defun gnus-treat-from-picon ()
+ "Display picons in the From header.
+If picons are already displayed, remove them."
+ (interactive)
+ (let ((wash-picon-p buffer-read-only))
+ (gnus-with-article-buffer
+ (if (and wash-picon-p (memq 'from-picon gnus-article-wash-types))
+ (gnus-delete-images 'from-picon)
+ (gnus-picon-transform-address "from" 'from-picon)))))
+
+;;;###autoload
+(defun gnus-treat-mail-picon ()
+ "Display picons in the Cc and To headers.
+If picons are already displayed, remove them."
+ (interactive)
+ (let ((wash-picon-p buffer-read-only))
+ (gnus-with-article-buffer
+ (if (and wash-picon-p (memq 'mail-picon gnus-article-wash-types))
+ (gnus-delete-images 'mail-picon)
+ (gnus-picon-transform-address "cc" 'mail-picon)
+ (gnus-picon-transform-address "to" 'mail-picon)))))
+
+;;;###autoload
+(defun gnus-treat-newsgroups-picon ()
+ "Display picons in the Newsgroups and Followup-To headers.
+If picons are already displayed, remove them."
+ (interactive)
+ (let ((wash-picon-p buffer-read-only))
+ (gnus-with-article-buffer
+ (if (and wash-picon-p (memq 'newsgroups-picon gnus-article-wash-types))
+ (gnus-delete-images 'newsgroups-picon)
+ (gnus-picon-transform-newsgroups "newsgroups")
+ (gnus-picon-transform-newsgroups "followup-to")))))