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-- XXX TODO: This should be fixed in the interpreter to not print decimals 35function intstring(num) 36 local str = tostring(num); 37 local decimal = str:find("%."); 38 39 if (decimal) then 40 return str:sub(1, decimal - 1); 41 end 42 return str; 43end 44 45function screen.clear() 46 if (core.isSerialBoot()) then 47 return; 48 end 49 loader.printc("\027[H\027[J"); 50end 51 52function screen.setcursor(x, y) 53 if (core.isSerialBoot()) then 54 return; 55 end 56 57 loader.printc("\027[" .. intstring(y) .. ";" .. intstring(x) .. "H"); 58end 59 60function screen.setforeground(c) 61 if (color.disabled) then 62 return c; 63 end 64 loader.printc("\027[3" .. c .. "m"); 65end 66 67function screen.setbackground(c) 68 if (color.disabled) then 69 return c; 70 end 71 loader.printc("\027[4" .. c .. "m"); 72end 73 74function screen.defcolor() 75 loader.printc(color.default()); 76end 77 78function screen.defcursor() 79 if (core.isSerialBoot()) then 80 return; 81 end 82 loader.printc("\027[25;0H"); 83end 84 85return screen; 86