R: Lua require function and _LOADED table

["marco.furlan" <marco.furlan@...>]

Thanks a lot for your help, the key point I didn?t understand was
	Note that the value stored in _LOADED["foo"] should be the value
returned by file or `true'.
Marco
-----Messaggio originale-----
Da: lua-bounces@bazar2.conectiva.com.br
[mailto:lua-bounces@bazar2.conectiva.com.br] Per conto di Tomas Guisasola
Gorham
Inviato: Friday, February 16, 2007 11:47 AM
A: Lua list
Oggetto: Re: Lua require function and _LOADED table

	Hi

...
> _LOADED["foo"] will not be nil. If you then assign nil to 
> _LOADED["foo"], a subsequent require"foo" will run the file again.>> 
> 
> With this in mind, my aim was to do something like 
> _LOADED[funcname] = nil everytime I overwrite the file. 
	Be carefull: you should use the file's name instead of
a function's name.

> My problem is that I'm not able to access this table from my C 
> program, i.e. I do something like 
> lua_getglobal(L, "_LOADED"); 
> if (!lua_istable(L, -1)) 
> {printf"_LOADED is not a valid table"); exit(0);} 
> n = lua_getn(L, -1); n IS ALWAYS ZERO !!!!!! 
	This table should not have an array part, therefore
lua_getn should always return 0.

> lua_getglobal(L, "_LOADED"); 
> if (!lua_istable(L, -1)) 
> {printf"_LOADED is not a valid table"); exit(0);} 
> lua_pushstring(L, funcname); 
> lua_gettable(L, -2); 
> if (!lua_isstring(L, -1)) 
> printf("invalid component in _LOADED"); 
> else 
> myname = lua_tostring(L, -1); 
> lua_pop(L, 1); 
	Note that the value stored in _LOADED["foo"] should be
the value returned by file or `true'.

> I run the require function before so I expected to find something in 
> the _LOADED table. 
> Can anybody please help me to change the _LOADED[] table values from 
> my C program. 
	If your file doesn't return anything, you'll find that
_LOADED[<filename>] == true, and any function defined inside it
should be stored in the global's table.

	Regards,
		Tomás