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--
-- SPDX-License-Identifier: BSD-2-Clause-FreeBSD
--
-- Copyright (c) 2015 Pedro Souza <pedrosouza@freebsd.org>
-- All rights reserved.
--
-- Redistribution and use in source and binary forms, with or without
-- modification, are permitted provided that the following conditions
-- are met:
-- 1. Redistributions of source code must retain the above copyright
-- notice, this list of conditions and the following disclaimer.
-- 2. Redistributions in binary form must reproduce the above copyright
-- notice, this list of conditions and the following disclaimer in the
-- documentation and/or other materials provided with the distribution.
--
-- THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
-- ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-- IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
-- ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
-- FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-- DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
-- OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
-- HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
-- LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
-- OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
-- SUCH DAMAGE.
--
-- $FreeBSD$
--
local core = require("core")
local hook = require("hook")
local color = {}
local function recalcDisabled()
color.disabled = not color.isEnabled()
end
-- Module exports
color.BLACK = 0
color.RED = 1
color.GREEN = 2
color.YELLOW = 3
color.BLUE = 4
color.MAGENTA = 5
color.CYAN = 6
color.WHITE = 7
color.DEFAULT = 9
color.BRIGHT = 1
color.DIM = 2
function color.isEnabled()
local c = loader.getenv("loader_color")
if c ~= nil then
return c:lower() ~= "no" and c ~= "0"
end
return true
end
function color.escapefg(color_value)
if color.disabled then
return ''
end
return core.KEYSTR_CSI .. "3" .. color_value .. "m"
end
function color.resetfg()
if color.disabled then
return ''
end
return color.escapefg(color.DEFAULT)
end
function color.escapebg(color_value)
if color.disabled then
return ''
end
return core.KEYSTR_CSI .. "4" .. color_value .. "m"
end
function color.resetbg()
if color.disabled then
return ''
end
return color.escapebg(color.DEFAULT)
end
function color.escape(fg_color, bg_color, attribute)
if color.disabled then
return ""
end
if attribute == nil then
attribute = ""
else
attribute = attribute .. ";"
end
return core.KEYSTR_CSI .. attribute ..
"3" .. fg_color .. ";4" .. bg_color .. "m"
end
function color.default()
if color.disabled then
return ""
end
return color.escape(color.DEFAULT, color.DEFAULT)
end
function color.highlight(str)
if color.disabled then
return str
end
-- We need to reset attributes as well as color scheme here, just in
-- case the terminal defaults don't match what we're expecting.
return core.KEYSTR_CSI .. "1m" .. str .. core.KEYSTR_CSI .. "22m"
end
recalcDisabled()
hook.register("config.loaded", recalcDisabled)
return color
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