1-- 2-- Copyright (c) 2015 Pedro Souza <pedrosouza@freebsd.org> 3-- All rights reserved. 4-- 5-- Redistribution and use in source and binary forms, with or without 6-- modification, are permitted provided that the following conditions 7-- are met: 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. 13-- 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 24-- SUCH DAMAGE. 25-- 26-- $FreeBSD$ 27-- 28 29local core = require("core"); 30 31local color = {}; 32 33-- Module exports 34color.BLACK = 0; 35color.RED = 1; 36color.GREEN = 2; 37color.YELLOW = 3; 38color.BLUE = 4; 39color.MAGENTA = 5; 40color.CYAN = 6; 41color.WHITE = 7; 42 43color.DEFAULT = 0; 44color.BRIGHT = 1; 45color.DIM = 2; 46 47function color.isEnabled() 48 local c = loader.getenv("loader_color"); 49 if (c ~= nil) then 50 if (c:lower() == "no") or (c == "0") then 51 return false; 52 end 53 end 54 return (not core.isSerialBoot()); 55end 56 57color.disabled = (not color.isEnabled()); 58 59function color.escapef(c) 60 if (color.disabled) then 61 return c; 62 end 63 return "\027[3" .. c .. "m"; 64end 65 66function color.escapeb(c) 67 if (color.disabled) then 68 return c; 69 end 70 return "\027[4" .. c .. "m"; 71end 72 73function color.escape(fg, bg, att) 74 if (color.disabled) then 75 return ""; 76 end 77 if (not att) then 78 att = "" 79 else 80 att = att .. ";"; 81 end 82 return "\027[" .. att .. "3" .. fg .. ";4" .. bg .. "m"; 83end 84 85function color.default() 86 if (color.disabled) then 87 return ""; 88 end 89 return "\027[0;37;40m"; 90end 91 92function color.highlight(str) 93 if (color.disabled) then 94 return str; 95 end 96 return "\027[1m" .. str .. "\027[0m"; 97end 98 99return color; 100