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|
;;; lui-irc-colors.el --- Add IRC color support to LUI
;; Copyright (C) 2005 Jorgen Schaefer
;; Author: Jorgen Schaefer <forcer@forcix.cx>
;; This file is part of Lui.
;; This program 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.
;; This program 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 this program; if not, write to the Free Software
;; Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
;; 02110-1301 USA
;;; Commentary:
;; This tells LUI how to display IRC colors:
;; ^B - Bold
;; ^_ - Underline
;; ^V - Inverse
;; ^] - Italic
;; ^O - Return to normal
;; ^C1,2 - Colors
;; The colors are documented at http://www.mirc.co.uk/help/color.txt
;;; Code:
(require 'lui)
(defgroup lui-irc-colors nil
"LUI IRC colors faces."
:group 'circe)
(defface lui-irc-colors-inverse-face
'((t (:inverse-video t)))
"Face used for inverse video."
:group 'lui-irc-colors)
(defun lui-irc-defface (face property on-dark on-light rest doc)
(custom-declare-face
face
`((((type graphic) (class color) (background dark))
(,property ,on-dark))
(((type graphic) (class color) (background light))
(,property ,on-light))
(t (,property ,rest)))
doc
:group 'lui-irc-colors))
(defun lui-irc-defface-pair (number on-dark on-light rest name)
(lui-irc-defface
(intern (format "lui-irc-colors-fg-%d-face" number))
:foreground
on-dark on-light rest
(concat "Face used for foreground IRC color "
(number-to-string number) " (" name ")."))
(lui-irc-defface
(intern (format "lui-irc-colors-bg-%d-face" number))
:background
on-light on-dark rest
(concat "Face used for background IRC color "
(number-to-string number) " (" name ").")))
(defun lui-irc-defface-bulk (colors)
(dotimes (n (length colors))
(apply 'lui-irc-defface-pair n (nth n colors))))
(lui-irc-defface-bulk
'(("#ffffff" "#585858" "white" "white")
("#a5a5a5" "#000000" "black" "black")
("#9b9bff" "#0000ff" "blue4" "blue")
("#40eb51" "#006600" "green4" "green")
("#ff9696" "#b60000" "red" "red")
("#d19999" "#8f3d3d" "red4" "brown")
("#d68fff" "#9c009c" "magenta4" "purple")
("#ffb812" "#7a4f00" "yellow4" "orange")
("#ffff00" "#5c5c00" "yellow" "yellow")
("#80ff95" "#286338" "green" "light green")
("#00b8b8" "#006078" "cyan4" "teal")
("#00ffff" "#006363" "cyan" "light cyan")
("#a8aeff" "#3f568c" "blue" "light blue")
("#ff8bff" "#853885" "magenta" "pink")
("#cfcfcf" "#171717" "dimgray" "grey")
("#e6e6e6" "#303030" "gray" "light grey")))
(defvar lui-irc-colors-regex
"\\(\x02\\|\x1F\\|\x16\\|\x1D\\|\x0F\\|\x03\\)"
"A regular expression matching IRC control codes.")
;;;###autoload
(defun enable-lui-irc-colors ()
"Enable IRC color interpretation for Lui."
(interactive)
(add-hook 'lui-pre-output-hook 'lui-irc-colors))
(defun disable-lui-irc-colors ()
"Disable IRC color interpretation for Lui."
(interactive)
(remove-hook 'lui-pre-output-hook 'lui-irc-colors))
(defun lui-irc-colors ()
"Add color faces for IRC colors.
This is an appropriate function for `lui-pre-output-hook'."
(goto-char (point-min))
(let ((start (point))
(boldp nil)
(inversep nil)
(italicp nil)
(underlinep nil)
(fg nil)
(bg nil))
(while (re-search-forward lui-irc-colors-regex nil t)
(lui-irc-propertize start (point)
boldp inversep italicp underlinep
fg bg)
(let ((code (match-string 1)))
(replace-match "")
(setq start (point))
(cond
((string= code "")
(setq boldp (not boldp)))
((string= code "")
(setq inversep (not inversep)))
((string= code " ")
(setq italicp (not italicp)))
((string= code " ")
(setq underlinep (not underlinep)))
((string= code "")
(setq boldp nil
inversep nil
italicp nil
underlinep nil
fg nil
bg nil))
((string= code "")
(if (looking-at "\\([0-9][0-9]?\\)\\(,\\([0-9][0-9]?\\)\\)?")
(progn
(setq fg (string-to-number (match-string 1))
bg (if (match-string 2)
(string-to-number (match-string 3))
bg))
(setq fg (if (and fg (not (= fg 99))) (mod fg 16) nil)
bg (if (and bg (not (= bg 99))) (mod bg 16) nil))
(replace-match ""))
(setq fg nil
bg nil)))
(t
(error "lui-irc-colors: Can't happen!")))))
(lui-irc-propertize (point) (point-max)
boldp inversep italicp underlinep fg bg)))
(defun lui-irc-propertize (start end boldp inversep italicp underlinep fg bg)
"Propertize the region between START and END."
(let ((faces (append (and boldp '(bold))
(and inversep '(lui-irc-colors-inverse-face))
(and italicp '(italic))
(and underlinep '(underline))
(and fg (list (lui-irc-colors-face 'fg fg)))
(and bg (list (lui-irc-colors-face 'bg bg))))))
(when faces
(add-face-text-property start end faces))))
(defun lui-irc-colors-face (type n)
"Return a face appropriate for face number N.
TYPE is either 'fg or 'bg."
(if (and (<= 0 n)
(<= n 15))
(intern (format "lui-irc-colors-%s-%s-face" type n))
'default-face))
(provide 'lui-irc-colors)
;;; lui-irc-colors.el ends here
|
