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 37screen.default_x = 0 38screen.default_y = 25 39 40function screen.clear() 41 if core.isSerialBoot() then 42 return 43 end 44 printc(core.KEYSTR_CSI .. "H" .. core.KEYSTR_CSI .. "J") 45end 46 47function screen.setcursor(x, y) 48 if core.isSerialBoot() then 49 return 50 end 51 52 printc(core.KEYSTR_CSI .. y .. ";" .. x .. "H") 53end 54 55function screen.setforeground(color_value) 56 if color.disabled then 57 return color_value 58 end 59 printc(color.escapef(color_value)) 60end 61 62function screen.setbackground(color_value) 63 if color.disabled then 64 return color_value 65 end 66 printc(color.escapeb(color_value)) 67end 68 69function screen.defcolor() 70 printc(color.default()) 71end 72 73function screen.defcursor() 74 if core.isSerialBoot() then 75 return 76 end 77 screen.setcursor(screen.default_x, screen.default_y) 78end 79 80return screen 81