Decompiler

--Decompiler from JoJa Productions

x,y = term.getSize()
percentage = 0
notrunning = true
newfile = ""

args = { ... }

function gui()
    term.clear()
    term.setCursorPos(1,1)
    term.setTextColor(colors.cyan)
    term.setBackgroundColor(colors.black)
    term.setCursorPos((x-16)/2,1)
    term.write("Jo")
    term.setTextColor(colors.orange)
    term.write("Ja")
    term.setTextColor(colors.gray)
    term.write(" Productions")

    term.setTextColor(colors.white)
    if notrunning then
        term.setCursorPos((x-20)/2,y-6)
        term.write("Dateinamen eingeben:")
        term.setCursorPos((x-20)/2,y-4)
    else
        term.setCursorPos(4, y-6)
        term.setBackgroundColor(colors.green)
        for i=0,percent do
            term.write(" ")
        end
        term.setBackgroundColor(colors.red)
        for i=percent,x-8 do
            term.write(" ")
        end
    end
end

function compile(pname)
    file = fs.open(pname,"r")
    lines = file.readAll()
    linesarray = {}
    lines:gsub(".",function(c) table.insert(linesarray,c) end)

    for i=1,#linesarray do
        code = string.byte(linesarray[i])
        char = string.char(code-12)
        newfile = newfile..char
    end
    file.close()

    file = fs.open(string.sub(pname, 1, string.find(pname, ".joja")-1), "w")
    file.write(newfile)
    file.close()
end

running = true
while notrunning do
    gui()
    if #args ~= 1 then
        pname = io.read()
    else
        pname = args[1]
    end
    if fs.exists(pname) and string.find(pname, ".joja") then
        notrunning = false
        compile(pname)
    end
end