+ :group 'gnus-picon)
+
+(defcustom gnus-picon-style 'inline
+ "How should picons be displayed.
+If `inline', the textual representation is replaced. If `right', picons are
+added right to the textual representation."
+ ;; FIXME: `right' needs improvement for XEmacs.
+ :type '(choice (const inline)
+ (const right))
+ :group 'gnus-picon)
+
+(defface gnus-picon-xbm '((t (:foreground "black" :background "white")))
+ "Face to show xbm picon in."
+ :group 'gnus-picon)
+;; backward-compatibility alias
+(put 'gnus-picon-xbm-face 'face-alias 'gnus-picon-xbm)
+
+(defface gnus-picon '((t (:foreground "black" :background "white")))
+ "Face to show picon in."
+ :group 'gnus-picon)
+;; backward-compatibility alias
+(put 'gnus-picon-face 'face-alias 'gnus-picon)
+
+;;; Internal variables:
+
+(defvar gnus-picon-setup-p nil)
+(defvar gnus-picon-glyph-alist nil
+ "Picon glyphs cache.
+List of pairs (KEY . GLYPH) where KEY is either a filename or an URL.")
+(defvar gnus-picon-cache nil)
+
+;;; Functions:
+
+(defsubst gnus-picon-split-address (address)
+ (setq address (split-string address "@"))
+ (if (stringp (cadr address))
+ (cons (car address) (split-string (cadr address) "\\."))
+ (if (stringp (car address))
+ (split-string (car address) "\\."))))
+
+(defun gnus-picon-find-face (address directories &optional exact)
+ (let* ((address (gnus-picon-split-address address))
+ (user (pop address))
+ (faddress address)
+ database directory result instance base)
+ (catch 'found
+ (dolist (database gnus-picon-databases)
+ (dolist (directory directories)
+ (setq address faddress
+ base (expand-file-name directory database))
+ (while address
+ (when (setq result (gnus-picon-find-image
+ (concat base "/" (mapconcat 'downcase
+ (reverse address)
+ "/")
+ "/" (downcase user) "/")))
+ (throw 'found result))
+ (if exact
+ (setq address nil)
+ (pop address)))
+ ;; Kludge to search MISC as well. But not in "news".
+ (unless (string= directory "news")
+ (when (setq result (gnus-picon-find-image
+ (concat base "/MISC/" user "/")))
+ (throw 'found result))))))))
+
+(defun gnus-picon-find-image (directory)
+ (let ((types gnus-picon-file-types)
+ found type file)
+ (while (and (not found)
+ (setq type (pop types)))
+ (setq found (file-exists-p (setq file (concat directory "face." type)))))
+ (if found
+ file
+ nil)))
+
+(defun gnus-picon-insert-glyph (glyph category &optional nostring)
+ "Insert GLYPH into the buffer.
+GLYPH can be either a glyph or a string. When NOSTRING, no textual
+replacement is added."
+ ;; Using NOSTRING prevents wrong BBDB entries with `gnus-picon-style' set to
+ ;; 'right.
+ (if (stringp glyph)
+ (insert glyph)
+ (gnus-add-wash-type category)
+ (gnus-add-image category (car glyph))
+ (gnus-put-image (car glyph) (unless nostring (cdr glyph)) category)))
+
+(defun gnus-picon-create-glyph (file)
+ (or (cdr (assoc file gnus-picon-glyph-alist))
+ (cdar (push (cons file (gnus-create-image file))
+ gnus-picon-glyph-alist))))
+
+;;; Functions that does picon transformations:
+
+(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 (1- (length spec)))
+ (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)