Initial revision
This commit is contained in:
Richard M. Stallman
parent
534b98409f
commit
618206eaea
1 changed files with 180 additions and 0 deletions
180
lisp/ansi-color.el
Normal file
180
lisp/ansi-color.el
Normal file
|
|
@ -0,0 +1,180 @@
|
|||
;;; ansi-color.el -- translate ANSI into text-properties
|
||||
|
||||
;; Copyright (C) 1999 Free Software Foundation, Inc.
|
||||
|
||||
;; Author: Alex Schroeder <a.schroeder@bsiag.ch>
|
||||
;; Maintainer: Alex Schroeder <a.schroeder@bsiag.ch>
|
||||
;; Version: 1.1.1
|
||||
;; Keywords: comm processes
|
||||
|
||||
;; 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 2, 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; see the file COPYING. If not, write to the
|
||||
;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
||||
;; Boston, MA 02111-1307, USA.
|
||||
|
||||
;;; Commentary:
|
||||
|
||||
;; You can get the latest version of this file from my homepage
|
||||
;; <URL:http://www.geocities.com/TimesSquare/6120/emacs.html>.
|
||||
;;
|
||||
;; This file provides a function that takes a string containing ANSI
|
||||
;; control sequences and tries to replace these with text-properties.
|
||||
;;
|
||||
;; I was unable to extract this functionality from term.el for another
|
||||
;; program I wanted to extend (the MUSH client TinyTalk.el), so I had to
|
||||
;; rewrite this.
|
||||
|
||||
;; In order to install this with TinyMush.el, add the following to your
|
||||
;; .emacs file:
|
||||
;;
|
||||
;; (setq tinymud-filter-line-hook 'my-tinymud-add-ansi-text-properties)
|
||||
;; (autoload 'ansi-color-to-text-properties "ansi-color"
|
||||
;; "Translates ANSI color control sequences into text-properties." t)
|
||||
;; (defun my-tinymud-add-ansi-text-properties (conn line)
|
||||
;; "Call `ansi-color-to-text-properties' for LINE.
|
||||
;; Ignores CONN and returns nil, so that `tinymud-filter-line' continues to
|
||||
;; process triggers and everything else."
|
||||
;; (ansi-color-to-text-properties line)
|
||||
;; nil)
|
||||
|
||||
;; If the ANSI sequences assume that you have a black background, you'll
|
||||
;; have to display the stuff in a frame with a black background. You
|
||||
;; can create such a frame like this (it still looks ugly!):
|
||||
;;
|
||||
;; (defun my-black-frame ()
|
||||
;; "Create a frame with black background."
|
||||
;; (interactive)
|
||||
;; (make-frame '((foreground-color . "white")
|
||||
;; (background-color . "black"))))
|
||||
|
||||
;;; Testing:
|
||||
|
||||
;; If you want to test the setup, evaluate the following fragment in a
|
||||
;; buffer without font-lock-mode. This doesn't work in buffers that
|
||||
;; have font-lock-mode!
|
||||
;;
|
||||
;; (progn
|
||||
;; (setq line "[1mbold[0m and [34mblue[0m, [1m[34mbold and blue[0m!!")
|
||||
;; (ansi-color-to-text-properties line)
|
||||
;; (insert line))
|
||||
|
||||
;;; Bugs:
|
||||
|
||||
;; Only supports the ANSI sequences that the MUSH I'm on uses (the MUSH
|
||||
;; is Elendor, see http://www.elendor.net). To see the list of codes
|
||||
;; supported I did a `help ansi()'. Based on this information, I used
|
||||
;; TinyTalk.el (without ANSI color support), gave myself the ANSI color
|
||||
;; flags using `@set me=ANSI' and `@set me=COLOR', and noted the ANSI
|
||||
;; escape sequences produced by the MUSH using `think ansi(r,red)' for
|
||||
;; example.
|
||||
;;
|
||||
;; The code is spaghetti-code, I hate it.
|
||||
|
||||
|
||||
|
||||
;;; Code:
|
||||
|
||||
(defvar ansi-color-faces-vector
|
||||
[default bold default default underline bold default modeline]
|
||||
"Faces used for ANSI control sequences determining a face.
|
||||
|
||||
Those are sequences like this one: [1m, where 1 could be one of the
|
||||
following numbers: 0 (default), 1 (hilight, rendered as bold), 4
|
||||
(underline), 5 (flashing, rendered as bold), 7 (inverse, rendered the
|
||||
same as the modeline)")
|
||||
|
||||
(defvar ansi-color-names-vector
|
||||
["black" "red" "green" "yellow" "blue" "magenta" "cyan" "white"]
|
||||
"Array of colors.
|
||||
|
||||
Used for sequences like this one: [31m, where 1 could be an index to a
|
||||
foreground color (red, in this case), or [41m, where 1 could be an
|
||||
index to a background color.
|
||||
|
||||
The default colors are: black, red, green, yellow, blue, magenta,
|
||||
cyan, and white.
|
||||
|
||||
On a light background, I prefer: black, red, dark green, orange, blue,
|
||||
magenta, turquoise, snow4")
|
||||
|
||||
;; The main function
|
||||
|
||||
(defun ansi-color-to-text-properties (str)
|
||||
"Translates ANSI color control sequences into text-properties.
|
||||
|
||||
The ANSI control sequences are made invisible. The text-properties are
|
||||
added to the string given in the parameter STR."
|
||||
;; ANSI code for highlighting, example: boring[1mINTERESTING[0mboring
|
||||
;; state: start with 0, "" -> 1, "[" -> 2, "[013457]" -> 3,
|
||||
;; "[013457]" -> 4, "m" -> back to 0!
|
||||
;; param: stored when state is 3 (in the above example: 1)
|
||||
(let ((str-length (length str))
|
||||
(face '(default))
|
||||
(i 0) (char) (state 0) (param1) (param2))
|
||||
(while (< i str-length)
|
||||
(setq char (aref str i))
|
||||
(cond
|
||||
;; Eeither just finished an ANSI control squence (state 4) or
|
||||
;; wrote normal chars (state 0).
|
||||
((and (or (= state 0) (= state 4)) (= char ?))
|
||||
(setq state 1)); saw escape
|
||||
((and (= state 1) (= char ?\[)); seen escape
|
||||
(setq state 2
|
||||
param1 nil
|
||||
param2 nil)); saw [, prepare for param1 and param2!
|
||||
((and (or (= state 2) (= state 3)); reading first or second digit
|
||||
(string-match "[01234567]" (substring str i (1+ i))))
|
||||
(if (= state 2); reading first digit
|
||||
;; [1m (hilight)
|
||||
(setq param1 (string-to-number (substring str i (1+ i)))
|
||||
state 3); prepare to read a second digit or quit.
|
||||
;; if reading second digit
|
||||
;; such as [32m (green foreground)
|
||||
(setq param2 (string-to-number (substring str i (1+ i)))
|
||||
state 4))); read second digit, prepare to quit
|
||||
((and (or (= state 3) (= state 4)) (= char ?m)); reading last char: m
|
||||
(setq state 4); state 4: m will be invisible. Now reset face
|
||||
;; according to param1 and param2.
|
||||
(if (null param2); only param1 set: no color changes!
|
||||
;; [0m: default face
|
||||
(if (= param1 0)
|
||||
(setq face '(default))
|
||||
;; [1m: hilight, [7m: inverse, [4m: underline, etc.
|
||||
(add-to-list 'face (aref ansi-color-faces-vector param1)))
|
||||
;; If param2 is set, we are changing back- or foreground color.
|
||||
(if (= param1 3); first digit told us to change foreground
|
||||
;; [31m: red foreground
|
||||
(add-to-list 'face (cons 'foreground-color
|
||||
(aref ansi-color-names-vector param2)))
|
||||
;; [42m: green background
|
||||
(add-to-list 'face (cons 'background-color
|
||||
(aref ansi-color-names-vector param2))))))
|
||||
(t (setq state 0))); all other cases, state is 0.
|
||||
|
||||
;; Set text-property for every char.
|
||||
(if (> state 0); if reading ANSI codes, state > 0: make them
|
||||
; invisible.
|
||||
(put-text-property i (1+ i) 'invisible t str)
|
||||
;; if reading normal chars, state is 0, put them in the
|
||||
;; current face.
|
||||
(put-text-property i (1+ i) 'face face str))
|
||||
;; next char
|
||||
(setq i (1+ i)))))
|
||||
|
||||
(provide 'ansi-color)
|
||||
|
||||
;;; ansi-colors.el ends here
|
||||
|
||||
|
||||
Loading…
Add table
Add a link
Reference in a new issue