mirror of
https://github.com/20kdc/OC-KittenOS.git
synced 2024-11-08 19:48:07 +11:00
146 lines
2.7 KiB
Lua
146 lines
2.7 KiB
Lua
-- KOSNEO installer base
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-- This is released into the public domain.
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-- No warranty is provided, implied or otherwise.
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-- DECOMPRESSION ENGINE PRECEDES THIS CODE --
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-- NOTE: upper-case is reserved for this file,
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-- lower-case is reserved for the decompression engine
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-- A: temporary
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-- B: computer
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-- C: component
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-- D: additional temporary
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-- E: read-in state machine
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-- F: current file: filename
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-- H: remaining bytes to copy/skip
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-- I: current file: handle (nil if not writing)
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-- J: sectors handled
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-- K: sector count (injected during build)
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-- L: compression engine data function (set by CE)
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-- M: sector handler function (called by CE)
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-- O: current character for read-in state machine
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-- P: file handle for selfread
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-- Q: octal decoding function
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-- X: screen address
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-- Y: component: gpu
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-- Z: component: filesystem
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B = computer
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C = component
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assert(C, "To install, please copy as init.lua to a blank disk or a system to update, then remove all other disks and reboot.")
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X = C.list("screen", true)()
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Y = C.list("gpu", true)()
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Z = C.proxy(B.getBootAddress())
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Z.remove("init.neoi.lua")
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Z.rename("init.lua","init.neoi.lua")
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P = Z.open("init.neoi.lua","rb")
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F = "Starting..."
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H = 0
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if X and Y then
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Y = C.proxy(Y)
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Y.bind(X)
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Y.setResolution(50, 5)
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Y.setBackground(2^24-1)
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Y.setForeground(0)
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Y.fill(1, 1, 50, 5, "█")
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Y.fill(1, 2, 50, 1, " ")
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Y.set(2, 2, "KittenOS NEO Installer")
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end
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function Q(A)
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if A == "" then return 0 end
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return Q(A:sub(1, -2)) * 8 + (A:byte(#A) - 48)
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end
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J = 0
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function M(n)
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if H > 0 then
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A = math.min(512, H)
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H = H - A
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if I then
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Z.write(I, n:sub(1, A))
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if H <= 0 then
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Z.close(I)
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I = nil
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end
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end
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else
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F = n:sub(1, 100):gsub("\x00", "")
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-- this sets up the reading/skipping of data
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H = Q(n:sub(125, 135))
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if F:sub(1, 2) == "./" and F ~= "./" then
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F = F:sub(3)
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if F:sub(#F) == "/" then
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Z.makeDirectory(F)
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else
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I = Z.open(F, "wb")
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if H == 0 then
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Z.close(I)
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I = nil
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end
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end
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end
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end
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-- UPDATE DISPLAY --
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J = J + 1
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if X and Y then
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Y.fill(1, 2, 50, 1, " ")
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Y.set(2, 2, "KittenOS NEO Installer : " .. F)
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Y.fill(2, 4, 48, 1, "█")
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Y.fill(2, 4, math.ceil(48 * J / K), 1, " ")
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end
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if J % 8 == 0 then
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B.pullSignal(0.01)
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end
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if J == K then
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Z.close(P)
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Z.remove("init.neoi.lua")
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B.shutdown(true)
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end
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end
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while true do
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A = Z.read(P, 64)
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if not A then
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L()
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-- IF WE GET HERE,
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-- YOU BROKE SOMETHING!
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A()
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end
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D = ""
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for i = 1, #A do
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-- Read-in state machine
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O = A:sub(i, i)
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if not E then
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if O == "\x00" then
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E = 0
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end
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elseif E == 0 then
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if O == "\xFE" then
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E = 1
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else
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D = D .. O
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end
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else
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D = D .. O
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E = 0
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end
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end
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L(D)
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end
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-- COMPRESSED DATA FOLLOWS THIS CODE --
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