Re: Environment variables
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- Subject: Re: Environment variables
- From: "Peter Hill" <corwin@...>
- Date: Sat, 8 Feb 2003 23:33:12 +0800
Szabolcs Szasz:
> I need to support a simple config file written
> consisting purely of
> variable = "value"
(snip)
> I thought of using a tagmethod for setglobal, but
> that did not seem to be allowed. Also, the globals
> table is of not much help now (I guess).
Globals table should be fine in Lua4 (it's Lua5 that has a new way of doing
things that may take a bit of thinking).
I would expect the following would work fine:
function f(configfile)
-- as locals these become immune to changing the global table.
local dofile = dofile
local globals = globals
-- New empty global table (store old globals in glob).
local glob = globals({})
-- Load the new globals with the config data.
dofile(configfile)
-- Reset to the old globals, the new data is safe in glob.
glob = globals(glob)
-- Return the config data.
return glob
end
*cheers*
Peter Hill.