1 \ Copyright (c) 2011-2013 Devin Teske <dteske@FreeBSD.org>
4 \ Redistribution and use in source and binary forms, with or without
5 \ modification, are permitted provided that the following conditions
7 \ 1. Redistributions of source code must retain the above copyright
8 \ notice, this list of conditions and the following disclaimer.
9 \ 2. Redistributions in binary form must reproduce the above copyright
10 \ notice, this list of conditions and the following disclaimer in the
11 \ documentation and/or other materials provided with the distribution.
13 \ THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
14 \ ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 \ IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16 \ ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
17 \ FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18 \ DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
19 \ OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20 \ HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21 \ LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22 \ OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 \ This function returns FALSE if the `loader_color' environment variable is set
30 \ to NO, no, or 0. It returns TRUE if `loader_color' is set to any other value.
31 \ If `loader_color' is unset, TRUE is returned (unless booting serial).
33 : loader_color? ( -- t )
35 s" loader_color" getenv dup -1 <> if
36 \ `loader_color' is set.
37 \ Check if it is explicitly disabled.
38 2dup s" NO" compare-insensitive 0= if
42 2dup s" 0" compare 0= if
50 \ `loader_color' is unset.
51 \ Default to using color unless serial boot is active.