-- ## Simple file read / writer ##
-- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

local file_reader = {}

local information_dir ="/tmp/"

-- Return true if file exists and is readable.
local check_exits =  function(path)
  local file = io.open(path, "rb")
  if file then file:close() end
  return file ~= nil
end



-- Read an entire file.
file_reader.readall =  function(filename)
  if check_exits(information_dir .. filename) then
        local fh = assert(io.open(information_dir .. filename, "rb"))
        local infor = assert(fh:read("*a"))
        fh:close()
        return tostring(infor:gsub("%s+", ""))
  else
        return "not found"
  end
end


-- Write a string to a file.
file_reader.write =  function(filename, contents)
  if check_exits(information_dir .. filename) then
    local fh = assert(io.open(information_dir .. filename, "wb"))
    fh:write(contents)
    fh:flush()
    fh:close()
  end
end


return file_reader