1-- 2-- SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3-- 4-- Copyright (c) 2015 Pedro Souza <pedrosouza@freebsd.org> 5-- All rights reserved. 6-- 7-- Redistribution and use in source and binary forms, with or without 8-- modification, are permitted provided that the following conditions 9-- are met: 10-- 1. Redistributions of source code must retain the above copyright 11-- notice, this list of conditions and the following disclaimer. 12-- 2. Redistributions in binary form must reproduce the above copyright 13-- notice, this list of conditions and the following disclaimer in the 14-- documentation and/or other materials provided with the distribution. 15-- 16-- THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17-- ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18-- IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19-- ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20-- FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21-- DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22-- OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23-- HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24-- LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25-- OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26-- SUCH DAMAGE. 27-- 28-- $FreeBSD$ 29-- 30 31local color = require("color") 32local core = require("core") 33 34local screen = {} 35 36-- Module exports 37function screen.clear() 38 if core.isSerialBoot() then 39 return 40 end 41 loader.printc("\027[H\027[J") 42end 43 44function screen.setcursor(x, y) 45 if core.isSerialBoot() then 46 return 47 end 48 49 loader.printc("\027[" .. y .. ";" .. x .. "H") 50end 51 52function screen.setforeground(c) 53 if color.disabled then 54 return c 55 end 56 loader.printc("\027[3" .. c .. "m") 57end 58 59function screen.setbackground(c) 60 if color.disabled then 61 return c 62 end 63 loader.printc("\027[4" .. c .. "m") 64end 65 66function screen.defcolor() 67 loader.printc(color.default()) 68end 69 70function screen.defcursor() 71 if core.isSerialBoot() then 72 return 73 end 74 loader.printc("\027[25;0H") 75end 76 77return screen 78