/usr/share/emacs/site-lisp/riece/riece-ctlseq.el is in riece 9.0.0-5.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 | ;;; riece-ctlseq.el --- mark up control sequences in IRC buffers -*- lexical-binding: t -*-
;; Copyright (C) 1998-2004 Daiki Ueno
;; Author: Daiki Ueno <ueno@unixuser.org>
;; Created: 1998-09-28
;; Keywords: IRC, riece
;; This file is part of Riece.
;; 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 2, 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 GNU Emacs; see the file COPYING. If not, write to the
;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
;; Boston, MA 02110-1301, USA.
;;; Commentary:
;; NOTE: This is an add-on module for Riece.
;;; Code:
(require 'riece-message)
(require 'riece-misc)
(defgroup riece-ctlseq nil
"Mark up control sequences in IRC buffer."
:prefix "riece-"
:group 'riece)
(defcustom riece-ctlseq-colors
'("white" "black" "red" "orange" "yellow" "LightGreen" "DarkOliveGreen"
"cyan4" "turquoise" "blue" "black" "black" "black" "black" "black"
"DarkBlue" "purple1" "purple2" "purple3" "magenta")
"List of colors can be used with ^C<fg>,<bg>.
To set up colors compatible with X-Chat and mIRC, do:
\(setq riece-ctlseq-colors '(\"#cecece\" \"black\" \"#0000cc\" \"#00cc00\"
\"#dd0000\" \"#aa0000\" \"#bb00bb\" \"#ffaa00\"
\"#eedd22\" \"#33de55\" \"#00cccc\" \"#33eeff\"
\"#0000ff\" \"#ee22ee\" \"#777777\" \"#999999\"))
"
:group 'riece-ctlseq
:type '(repeat (string :tag "Color")))
(defcustom riece-ctlseq-hide-controls t
"If non-nil, control characters are hidden."
:group 'riece-ctlseq
:type 'boolean)
(defcustom riece-ctlseq-face-cache-size 128
"Maximum length of the internal face cache."
:group 'riece-ctlseq
:type 'integer)
(defvar riece-ctlseq-face-cache nil)
(defvar riece-ctlseq-face-counter 0)
(defconst riece-ctlseq-description
"Mark up control sequences in IRC buffers.")
(defconst riece-ctlseq-regexp
"[\x2\xF\x16\x1F]\\|\x3\\([0-9][0-9]?\\)\\(,[0-9][0-9]?\\)?")
(defun riece-ctlseq-compatible-attributes-p (this other)
(let ((pointer this))
(catch 'mismatched
(while pointer
(unless (equal (plist-get other (car pointer)) (nth 1 pointer))
(throw 'mismatched nil))
(setq pointer (nthcdr 2 pointer)))
t)))
(defun riece-ctlseq-face-foreground-name (face)
"Return the name of FACE's foreground color."
(if (fboundp 'face-foreground-name) ;XEmacs
(face-foreground-name face)
(face-foreground face)))
(defun riece-ctlseq-face-background-name (face)
"Return the name of FACE's background color."
(if (fboundp 'face-background-name) ;XEmacs
(face-background-name face)
(face-background face)))
(defun riece-ctlseq-make-face (attrs)
(let* ((face-name (intern (format "riece-ctlseq-face-%d"
(prog1 riece-ctlseq-face-counter
(setq riece-ctlseq-face-counter
(1+ riece-ctlseq-face-counter))))))
(face (make-face face-name))
foreground
background)
(if (plist-get attrs 'bold)
(make-face-bold face))
(if (plist-get attrs 'underline)
(set-face-underline-p face t))
(if (setq foreground (plist-get attrs 'foreground))
(set-face-foreground face foreground))
(if (setq background (plist-get attrs 'background))
(set-face-background face background))
(when (plist-get attrs 'inverse-video)
(setq foreground (or (riece-ctlseq-face-background-name face)
(riece-ctlseq-face-background-name 'default))
background (or (riece-ctlseq-face-foreground-name face)
(riece-ctlseq-face-foreground-name 'default)))
(set-face-foreground face foreground)
(set-face-background face background))
(put face-name 'riece-ctlseq-attributes attrs)
face-name))
(defun riece-ctlseq-face-from-cache (attrs)
(if (null attrs)
'default
(let ((pointer riece-ctlseq-face-cache)
last-pointer
other)
(catch 'found
(while pointer
(setq other (get (car pointer) 'riece-ctlseq-attributes))
(when (and (riece-ctlseq-compatible-attributes-p attrs other)
(riece-ctlseq-compatible-attributes-p other attrs))
(if last-pointer
(setcdr last-pointer (cdr pointer)))
(throw 'found (setcar riece-ctlseq-face-cache (car pointer))))
(setq last-pointer pointer
pointer (cdr pointer)))
(if (>= (length riece-ctlseq-face-cache)
riece-ctlseq-face-cache-size)
(setq riece-ctlseq-face-cache
(butlast riece-ctlseq-face-cache)))
(setq riece-ctlseq-face-cache
(cons (riece-ctlseq-make-face attrs)
riece-ctlseq-face-cache))
(car riece-ctlseq-face-cache)))))
(defun riece-ctlseq-update-attribute (tag attrs)
(let ((attrs (copy-sequence attrs)))
(cond
((eq (aref tag 0) ?\x2) ;^B
(setq attrs (plist-put attrs 'bold (not (plist-get attrs 'bold)))))
((eq (aref tag 0) ?\xF) ;^O
(setq attrs nil))
((eq (aref tag 0) ?\x16) ;^V
(setq attrs (plist-put attrs 'inverse-video
(not (plist-get attrs 'inverse-video)))))
((eq (aref tag 0) ?\x1F) ;^_
(setq attrs (plist-put attrs 'underline
(not (plist-get attrs 'underline)))))
((eq (aref tag 0) ?\x3) ;^C<fg>[,<bg>]
(setq attrs (plist-put attrs 'foreground
(nth (string-to-number (substring tag 1))
riece-ctlseq-colors)))
(if (string-match "," tag)
(setq attrs (plist-put attrs 'background
(nth (string-to-number
(substring tag (match-end 0)))
riece-ctlseq-colors))))))
attrs))
(defun riece-ctlseq-update-attributes (tags attrs)
(let ((start 0))
(while (string-match riece-ctlseq-regexp tags start)
(setq start (match-end 0)
attrs (riece-ctlseq-update-attribute (match-string 0 tags) attrs)))
attrs))
(defun riece-ctlseq-put-attributes (string start end attrs)
(when (and (> end start) attrs)
(put-text-property start end
'riece-ctlseq-attributes (copy-sequence attrs)
string)
(put-text-property start end
'riece-overlay-face
(riece-ctlseq-face-from-cache attrs)
string)))
(defun riece-ctlseq-message-filter (message)
(if (get 'riece-ctlseq 'riece-addon-enabled)
(let ((start 0)
(end (length (riece-message-text message)))
tags-start tags-end attrs)
(while (string-match (concat "\\(" riece-ctlseq-regexp "\\)+")
(riece-message-text message) start)
(if riece-ctlseq-hide-controls
(put-text-property (match-beginning 0) (match-end 0)
'invisible 'riece-ctlseq
(riece-message-text message)))
(setq tags-start (match-beginning 0)
tags-end (match-end 0))
(riece-ctlseq-put-attributes (riece-message-text message)
start tags-start
attrs)
(setq attrs (riece-ctlseq-update-attributes
(substring (riece-message-text message)
tags-start tags-end)
attrs)
start tags-end))
(riece-ctlseq-put-attributes (riece-message-text message)
start end
attrs)))
message)
(defun riece-ctlseq-requires ()
'(riece-highlight))
(defun riece-ctlseq-insinuate ()
(add-hook 'riece-message-filter-functions 'riece-ctlseq-message-filter))
(defun riece-ctlseq-uninstall ()
(remove-hook 'riece-message-filter-functions 'riece-ctlseq-message-filter))
(provide 'riece-ctlseq)
;;; riece-ctlseq.el ends here
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