Lua-based operating system, based on LuPI2, with a focus on PowerPC based Macintosh machines
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local textgpu = {}
local mapping = {
["0"] = 0x000000,
["1"] = 0xFF0000,
["2"] = 0x00FF00,
["3"] = 0xFFFF00,
["4"] = 0x0000FF,
["5"] = 0xFF00FF,
["6"] = 0x00FFFF,
["7"] = 0xFFFFFF,
}
--[[local nw = io.write
io.write = function(...)
nw(...)
io.flush()
native.sleep(20000)
end]]--
local write = io.write
local flush = io.flush
local background = "0"
local foreground = "0"
local tbuffer = {}
local bbuffer = {}
local fbuffer = {}
local function prepareBuffers(w, h)
local tbline = (" "):rep(w)
local bbline = ("0"):rep(w)
local fbline = ("7"):rep(w)
for i=1, h do
tbuffer[i] = tbline
bbuffer[i] = bbline
fbuffer[i] = fbline
end
end
local usub
local function insertString(main, sub, at)
checkArg(1, main, "string")
checkArg(2, sub, "string")
checkArg(3, at, "number")
return usub(main, 1, at - 1)
.. sub .. usub(main, at + (utf8.len(sub) or 0))
end
function textgpu.start()
usub = modules.sandbox.unicode.sub
local _height = 0
local gpu = {}
function gpu.bind() return false, "This is static bound gpu" end
function gpu.setBackground(color, isPaletteIndex)
checkArg(1, color, "number")
checkArg(2, isPaletteIndex, "boolean", "nil")
if isPaletteIndex then
return --TODO: Maybe?
end
local old = background
background = tostring(math.floor(modules.color.nearest(color, mapping)))
write("\x1b[4" .. background .. "m")
flush()
return mapping[old]
end
function gpu.setForeground(color, isPaletteIndex)
checkArg(1, color, "number")
checkArg(2, isPaletteIndex, "boolean", "nil")
if isPaletteIndex then
return --TODO: Maybe?
end
local old = foreground
foreground = tostring(math.floor(modules.color.nearest(color, mapping)))
write("\x1b[3" .. foreground .. "m")
flush()
return mapping[old]
end
function gpu.getBackground()
return mapping[background], false
end
function gpu.getForeground()
return mapping[foreground], false
end
function gpu.getPaletteColor()
return nil
end
function gpu.setPaletteColor()
return nil
end
function gpu.maxDepth()
return 3
end
function gpu.setDepth()
return false
end
function gpu.getDepth()
return 3
end
function gpu.maxResolution()
return termutils.getSize()
end
function gpu.getResolution()
return termutils.getSize()
end
function gpu.getViewport()
return termutils.getSize()
end
function gpu.setViewport(w, h)
checkArg(1, w, "number")
checkArg(2, h, "number")
return false, "Viewport not supported for this gpu"
end
function gpu.setResolution(w, h)
checkArg(1, w, "number")
checkArg(2, h, "number")
return false, "Non resizeable gpu"
end
function gpu.get(x, y)
checkArg(1, x, "number")
checkArg(2, y, "number")
return tbuffer[y]:sub(x,x), mapping[fbuffer[y]:sub(x,x)], mapping[bbuffer[y]:sub(x,x)]
end
function gpu.set(x, y, value, vertical)
checkArg(1, x, "number")
checkArg(2, y, "number")
checkArg(3, value, "string")
checkArg(4, vertical, "boolean", "nil")
x = math.floor(x)
y = math.floor(y)
if not vertical then
if not tbuffer[y] then
native.log("GPU Set failed: under buffer")
return false
end
tbuffer[y] = insertString(tbuffer[y], value, x)
bbuffer[y] = insertString(bbuffer[y], background:rep(utf8.len(value)), x)
fbuffer[y] = insertString(fbuffer[y], foreground:rep(utf8.len(value)), x)
write("\x1b[" .. y .. ";" .. x .. "H" .. value)
else
--TODO: Buffers!
write("\x1b[" .. y .. ";" .. x .. "H")
value:gsub("([%z\1-\127\194-\244][\128-\191]*)", function(c)
write(c .. "\x1b[D\x1b[B")
end)
end
flush()
return true
end
function gpu.copy(x, y, w, h, tx, ty) --TODO: Check(check X multiple times)
checkArg(1, x, "number")
checkArg(2, y, "number")
checkArg(3, w, "number")
checkArg(4, h, "number")
checkArg(5, tx, "number")
checkArg(6, ty, "number")
local ttbuf = {}
local btbuf = {}
local ftbuf = {}
for i=1, h do
if i + y - 2 <= _height and i + y > 1 then
ttbuf[i] = tbuffer[y + i - 1] and usub(tbuffer[y + i - 1], x, x + w - 1) or (" "):rep(w)
btbuf[i] = bbuffer[y + i - 1] and bbuffer[y + i - 1]:sub(x, x + w - 1) or background:rep(w)
ftbuf[i] = fbuffer[y + i - 1] and fbuffer[y + i - 1]:sub(x, x + w - 1) or foreground:rep(w)
else
ttbuf[i] = (" "):rep(w)
btbuf[i] = background:rep(w)
ftbuf[i] = foreground:rep(w)
end
end
local bg = background
local fg = foreground
for i=1, h do
local line, linex
local lwrite = false
for j=1, w do
if btbuf[i]:sub(j,j) ~= bg then
lwrite = true
end
if ftbuf[i]:sub(j,j) ~= fg then
lwrite = true
end
if not line then linex = j end
line = (line or "")
if lwrite then
local wx = (tx + x + linex - 1)|0
local wy = (ty + y + i - 1)|0
if tbuffer[wy] then
write("\x1b[4" .. bg .. "m\x1b[3" .. fg .. "m\x1b[" .. wy .. ";" .. wx .. "H" .. line)
tbuffer[wy] = insertString(tbuffer[wy], line, wx)
bbuffer[wy] = insertString(bbuffer[wy], bg:rep(utf8.len(line)), wx)
fbuffer[wy] = insertString(fbuffer[wy], fg:rep(utf8.len(line)), wx)
end
bg = btbuf[i]:sub(j,j)
fg = ftbuf[i]:sub(j,j)
line = nil
linex = nil
lwrite = false
end
if not line then linex = j end
line = (line or "") .. usub(ttbuf[i], j,j)
end
if line then
local wx = (tx + x + linex - 1)|0
local wy = (ty + y + i - 1)|0
if tbuffer[wy] then
write("\x1b[4" .. bg .. "m\x1b[3" .. fg .. "m\x1b[" .. wy .. ";" .. wx .. "H" .. line)
tbuffer[wy] = insertString(tbuffer[wy], line, wx)
bbuffer[wy] = insertString(bbuffer[wy], bg:rep(utf8.len(line)), wx)
fbuffer[wy] = insertString(fbuffer[wy], fg:rep(utf8.len(line)), wx)
end
line = nil
linex = nil
lwrite = false
end
end
write("\x1b[4" .. background .. "m")
write("\x1b[3" .. foreground .. "m")
flush()
return true
end
function gpu.fill(x, y, w, h, ch)
checkArg(1, x, "number")
checkArg(2, y, "number")
checkArg(3, w, "number")
checkArg(4, h, "number")
checkArg(5, ch, "string")
ch = usub(ch, 1, 1):rep(math.floor(w))
for i=1, h do
if i + y - 1 <= _height and i + y > 1 then
gpu.set(x, y + i - 1, ch)
end
end
return true
end
local screenAddr
function gpu.getScreen()
return screenAddr
end
if not termutils.init() then
return nil, "Cannot initialize terminal based gpu"
end
write("\x1b[?25l") --Disable cursor
local w, h = gpu.getResolution()
_height = h
prepareBuffers(w, h)
gpu.setForeground(0xFFFFFF)
gpu.setBackground(0x000000)
local gpuaddr = modules.component.api.register(nil, "gpu", gpu)
screenAddr = modules.component.api.register(nil, "screen", {getKeyboards = function() return {"TODO:SetThisUuid"} end}) --verry dummy screen, TODO: make it better, kbd uuid also in epoll.c
modules.component.api.register("TODO:SetThisUuid", "keyboard", {})
deadhooks[#deadhooks + 1] = function()
write("\x1b[?25h\x1b[" .. ((h-1)|0) .. ";1H") --Enable cursor on quit
io.flush()
termutils.restore()
end
return gpuaddr
end
return textgpu