luasocket/gem/ex5.lua
2007-10-11 21:16:28 +00:00

16 lines
328 B
Lua

function source.empty(err)
return function()
return nil, err
end
end
function source.file(handle, io_err)
if handle then
return function()
local chunk = handle:read(20)
if not chunk then handle:close() end
return chunk
end
else return source.empty(io_err or "unable to open file") end
end