Citac radku 1

function lines_from(file)
  if not file_exists(file) then return {} end
  lines = {}
  for line in io.lines(file) do
    lines[#lines + 1] = line
  end
  return lines
end

-- see if the file exists
function file_exists(file)
  local f = io.open(file, "rb")
  if f then f:close() end
  return f ~= nil
end


cyklu=1
while true do
    local data
    data = fs.open("aaa","r")

    --zjistime pocet radku ze souboru
    local file = 'aaa'
    local lines = lines_from(file)
    print(lines)


    citac_radku = data.readLine() -- nacti radek
    if citac_radku == nil then break end

    result = {};
    for match in string.gmatch(citac_radku, "[^%s]+") do
        table.insert(result, match);
    end
    print(result[1]) -- souradnice X
    print(result[2]) -- souradnice Y
    print(result[3]) -- souradnice Z
    print(result[4]) -- item

    x = (result[1])
    y = (result[2])
    z = (result[3])
    item = (result[4])

cyklu = cyklu + 1
end



print("Konec")
-----------------------------------------------
local open = io.open

local function read_file(path)
    local file = open(path, "r") -- r read mode and b binary mode
    if not file then return nil end
    local content = file:read "*a" -- *a or *all reads the whole file
    file:close()
    return content

end

local fileContent = read_file("aaa");
print (fileContent);