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 color = require("color") 30local core = require("core") 31 32local screen = {} 33 34-- Module exports 35function screen.clear() 36 if core.isSerialBoot() then 37 return 38 end 39 loader.printc("\027[H\027[J") 40end 41 42function screen.setcursor(x, y) 43 if core.isSerialBoot() then 44 return 45 end 46 47 loader.printc("\027[" .. y .. ";" .. x .. "H") 48end 49 50function screen.setforeground(c) 51 if color.disabled then 52 return c 53 end 54 loader.printc("\027[3" .. c .. "m") 55end 56 57function screen.setbackground(c) 58 if color.disabled then 59 return c 60 end 61 loader.printc("\027[4" .. c .. "m") 62end 63 64function screen.defcolor() 65 loader.printc(color.default()) 66end 67 68function screen.defcursor() 69 if core.isSerialBoot() then 70 return 71 end 72 loader.printc("\027[25;0H") 73end 74 75return screen 76