[Lua + Gio] Reads directory content recursively

GioDirectoryRecursive.lua

local lgi = require("lgi")
local Gio = lgi.require("Gio", "2.0")

local Content = {}
local Dir = ""

function ReadDir(Path, Tab, Indent)
  local file = Gio.File.new_for_path(Path)
  local enum = file:enumerate_children("standard::name", Gio.FileQueryInfoFlags.NONE)
  local path = file:get_path() .. "/"
  local indent = Indent or ""

  if not enum then
    error("Can't open path: ".. Path)
  else
    local info = enum:next_file()
    local count = 1

    while info do
      local name = info:get_name()
      local file_type = info:get_file_type()
      local full_path = path .. info:get_name()

      if file_type == "DIRECTORY" then
        Tab[count] = {
          Type = file_type,
          Basename = name,
          Path = full_path,
          Files = {}
        }

        ReadDir(full_path, Tab[count].Files, indent .. " > ")
      else
        Tab[count] = {
          Type = file_type,
          Basename = name,
          Path = full_path
        }
      end

      info = enum:next_file()
      count = count + 1
    end
  end
end

local function RPairs(T, I)
  local i = I or ""
  for k, v in pairs(T) do
    print(("%s %s %s"):format(i, k, tostring(v)))

    if type(v) == "table" then
      RPairs(v, i .. "> ")
    end
  end
end

if #arg == 0 then
  error("No arguments!")

elseif #arg == 1 then
  Dir = arg[1]

  Content = (#Content > 0) and {} or Content

  ReadDir(Dir, Content)
  RPairs(Content)

else
  Content = (#Content > 0) and {} or Content

  for i = 1, #arg do
    Dir = arg[i]
    Content[i] = {
      Root = Dir,
      Files = {}
    }

    ReadDir(Dir, Content[i].Files)
    RPairs(Content)
  end
end