2 -- Copyright (c) 2015 Pedro Souza <pedrosouza@freebsd.org>
3 -- All rights reserved.
5 -- Redistribution and use in source and binary forms, with or without
6 -- modification, are permitted provided that the following conditions
8 -- 1. Redistributions of source code must retain the above copyright
9 -- notice, this list of conditions and the following disclaimer.
10 -- 2. Redistributions in binary form must reproduce the above copyright
11 -- notice, this list of conditions and the following disclaimer in the
12 -- documentation and/or other materials provided with the distribution.
14 -- THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 -- ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 -- IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 -- ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 -- FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 -- DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 -- OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 -- HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 -- LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 -- OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 local core = require("core")
47 function color.isEnabled()
48 local c = loader.getenv("loader_color")
50 if c:lower() == "no" or c == "0" then
54 return not core.isSerialBoot()
57 color.disabled = not color.isEnabled()
59 function color.escapef(c)
60 if color.disabled then
63 return "\027[3" .. c .. "m"
66 function color.escapeb(c)
67 if color.disabled then
70 return "\027[4" .. c .. "m"
73 function color.escape(fg, bg, att)
74 if color.disabled then
82 return "\027[" .. att .. "3" .. fg .. ";4" .. bg .. "m"
85 function color.default()
86 if color.disabled then
89 return "\027[0;37;40m"
92 function color.highlight(str)
93 if color.disabled then
96 return "\027[1m" .. str .. "\027[0m"