Script to get Luz

readme

This is just a script I made to get Luz since I'm tired of getting it manually. Have fun.

getluz.lua

-- Simple tool to snatch up JackMacWindows' Luz.
-- Luz: <https://github.com/MCJack123/Luz>
-- Made by XDuskAshes - <https://github.com/XDuskAshes/>
-- Released under CC-0, do what you will.

local luzrepo = "https://raw.githubusercontent.com/MCJack123/Luz/refs/heads/lz77-deflate-identifiers/"
local luzrepotest = "https://raw.githubusercontent.com/MCJack123/Luz/refs/heads/lz77-deflate-identifiers/LICENSE"
local luzrepocontent = {"LibDeflate.lua","compress.lua","decompress.lua","histogram.lua","inspect.lua","lex.lua","luz.lua","lz77.lua","maketree.lua","minify.lua","token_decode_tree.lua","token_encode_map.lua"}
-- Using lz77-deflate-identifiers because that's the default. I made this a variable for your own
-- per-use-case cases. Dammit, english sucks.

local function doNothing() -- Do nothing.
    local cx, cy = term.getCursorPos()
    term.setCursorPos(cx,cy)
end

local function netTest(url) -- test a url for it's existence. if it doesn't exist, check for 8.8.8.8 and if that fails then error
    local request = http.get(url)
    if not request then
        request = http.get("8.8.8.8")
        if not request then
            return false, "cant reach 8.8.8.8, is your internet working?"
        else
            return false, "blocked or doesn't exist: "..url
        end
    else
        return true, "exists: "..url
    end
end

local function writeFile(file,content)
    -- check if the file already exists
    if fs.exists(shell.resolve(file)) then
        printError("[write]: exists: "..file) -- i *could* wrap in an "xpcall()" for actually good error handling, but i am frankly too lazy right now
        return
    end
    -- check if content is empty
    if content == "" or content == nil then
        printError("[write]: content for "..file.." invalid or nonexistent")
        return
    end


    if type(content) == "string" then
        doNothing()
    elseif type(content) == "table" then
        doNothing()
    else
        printError("[write]: invalid type for content: "..type(content))
        return
    end

    local handle = fs.open(shell.resolve(file),"w")

    -- alright, now we write. if it's a string just write the line, if it's a table go bit-by-bit
    if type(content) == "string" then
        handle.writeLine(content)
    elseif type(content) == "table" then
        for k,v in pairs(content) do
            handle.writeLine(v)
        end
    else -- if it gets past the previous check
        printError("[write]: invalid type for content: "..type(content))
        return
    end

    handle.close()

    -- extra check for the file
    if not fs.exists(shell.resolve(file)) then
        printError("[write]: write failed for: "..file)
        return
    end

    print("write success: "..file)
end

-- testing - uncomment as needed
--[[
local tblText = {"testing","tester"}
writeFile("/test.txt","this is a test")
writeFile("/testtbl.txt",tblText)
writeFile("/test-should-fail.txt",8)
]]

local status, message = netTest(luzrepotest)
if not status then
    error(message)
else
    print(message)
end

print("enter the directory to write Luz's files to. '/' is default.")
write("> ")
local writeluzto = read()

if writeluzto == "" or writeluzto == nil then
    print("defaulting to root")
    writeluzto = "/"
else
    if not fs.exists(shell.resolve(writeluzto)) then
        printError("invalid: "..writeluzto..", defaulting to '/'")
        writeluzto = "/"
    elseif fs.exists(shell.resolve(writeluzto)) then
        if not fs.isDir(shell.resolve(writeluzto)) then
            printError("invalid: "..writeluzto..", defaulting to '/'")
            writeluzto = "/"
        end
    end
end

print("writing luz's files to "..writeluzto)
print("getting luz...")
for k,v in pairs(luzrepocontent) do
    local request, respond = netTest(luzrepo..v)
    if not request then
        error(message)
    else
        request = http.get(luzrepo..v)
    end

    writeFile(writeluzto..v,request.readAll())
end