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a6f1506f1a
This gives some form of feedback while typing, and matches-(ish*) Forth behavior. The cursor generally rests two column after the password prompt, then the twiddle is drawn three columns later and the cursor reset to resting position after being drawn. I've removed the note about re-evaluating it for security considerations and instead set it up as a module-local variable that we can set later depending on environment or something. It's set to false with no chance of changing at the moment. *As close as I can tell from reading check-password.4th, because I don't have an easy test (or deployed) setup for forth loader to check how close it is. Please do mention if it's not close enough.
95 lines
2.5 KiB
Lua
95 lines
2.5 KiB
Lua
--
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-- SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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--
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-- Copyright (c) 2015 Pedro Souza <pedrosouza@freebsd.org>
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-- All rights reserved.
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--
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-- Redistribution and use in source and binary forms, with or without
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-- modification, are permitted provided that the following conditions
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-- are met:
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-- 1. Redistributions of source code must retain the above copyright
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-- notice, this list of conditions and the following disclaimer.
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-- 2. Redistributions in binary form must reproduce the above copyright
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-- notice, this list of conditions and the following disclaimer in the
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-- documentation and/or other materials provided with the distribution.
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--
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-- THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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-- ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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-- IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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-- ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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-- FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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-- DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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-- OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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-- HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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-- LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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-- OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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-- SUCH DAMAGE.
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--
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-- $FreeBSD$
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--
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local color = require("color")
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local core = require("core")
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local screen = {}
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-- Module exports
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function screen.clear()
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if core.isSerialBoot() then
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return
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end
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loader.printc("\027[H\027[J")
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end
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function screen.setcursor(x, y)
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if core.isSerialBoot() then
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return
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end
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loader.printc("\027[" .. y .. ";" .. x .. "H")
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end
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function screen.movecursor(dx, dy)
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if core.isSerialBoot() then
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return
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end
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if dx < 0 then
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loader.printc("\027[" .. -dx .. "D")
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elseif dx > 0 then
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loader.printc("\027[" .. dx .. "C")
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end
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if dy < 0 then
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loader.printc("\027[" .. -dy .. "A")
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elseif dy > 0 then
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loader.printc("\027[" .. dy .. "B")
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end
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end
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function screen.setforeground(color_value)
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if color.disabled then
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return color_value
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end
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loader.printc(color.escapef(color_value))
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end
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function screen.setbackground(color_value)
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if color.disabled then
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return color_value
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end
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loader.printc(color.escapeb(color_value))
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end
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function screen.defcolor()
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loader.printc(color.default())
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end
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function screen.defcursor()
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if core.isSerialBoot() then
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return
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end
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loader.printc("\027[25;0H")
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end
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return screen
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