2 -- Copyright (c) 2015 Pedro Souza <pedrosouza@freebsd.org>
3 -- All rights reserved.
5 -- Redistribution and use in source and binary forms, with or without
6 -- modification, are permitted provided that the following conditions
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.
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
29 local color = require("color");
30 local core = require("core");
34 -- XXX TODO: This should be fixed in the interpreter to not print decimals
35 local intstring = function(num)
36 local str = tostring(num);
37 local decimal = str:find("%.");
40 return str:sub(1, decimal - 1);
46 function screen.clear()
47 if (core.isSerialBoot()) then
50 loader.printc("\027[H\027[J");
53 function screen.setcursor(x, y)
54 if (core.isSerialBoot()) then
58 loader.printc("\027[" .. intstring(y) .. ";" .. intstring(x) .. "H");
61 function screen.setforeground(c)
62 if (color.disabled) then
65 loader.printc("\027[3" .. c .. "m");
68 function screen.setbackground(c)
69 if (color.disabled) then
72 loader.printc("\027[4" .. c .. "m");
75 function screen.defcolor()
76 loader.printc(color.default());
79 function screen.defcursor()
80 if (core.isSerialBoot()) then
83 loader.printc("\027[25;0H");