mirror of https://github.com/20kdc/OC-KittenOS.git
46 lines
1.5 KiB
Lua
46 lines
1.5 KiB
Lua
-- This is released into the public domain.
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-- No warranty is provided, implied or otherwise.
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-- KittenOS NEO Installer Generator --
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local alg, tarName, cid = ...
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cid = (cid or "UNKNOWN"):sub(1, 7)
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local u = require("libs.frw")
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local algImpl = require(alg .. ".compress")
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local instSize = 0
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local function put(data)
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io.write(data)
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instSize = instSize + #data
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end
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-- TAR File --
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local tarData = u.read(tarName)
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local tarSectors = math.floor(#tarData / 512)
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-- Installer Lexcrunch Context --
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local lexCrunch = require("libs.lexcrunch")()
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local installerCore = lexCrunch(u.read("instcore.lua"), {["$$SECTORS"] = tostring(tarSectors)})
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local installerHead = lexCrunch(u.read("insthead.lua"), {["$$CORESIZE"] = tostring(#installerCore)})
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local installerTail = lexCrunch(u.read("insttail.lua"), {})
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-- Installer Compression --
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local rawData = installerCore .. tarData
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io.stderr:write("compressing...\n")
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local compressionEngine, compressedData = algImpl(rawData, lexCrunch)
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-- RISM [[
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compressedData = compressedData:gsub("\xFE", "\xFE\xFE")
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compressedData = compressedData:gsub("]]", "]\xFE]")
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compressedData = "\x00" .. compressedData
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-- ]]
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io.stderr:write("compression with " .. alg .. ": " .. #rawData .. " -> " .. #compressedData .. "\n")
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-- Installer Final Generation --
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put("--" .. cid .. "\n")
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put("--This is released into the public domain. No warranty is provided, implied or otherwise.\n")
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put(lexCrunch(installerHead .. compressionEngine .. installerTail, {}))
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put("--[[" .. compressedData .. "]]")
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