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