Re: access to _G

[Rob Hoelz <rob@...>]

On Mon, 11 Mar 2013 15:15:02 +0100
Philipp Kraus <philipp.kraus@flashpixx.de> wrote:

> Hello,
> 
> I have got a LUA function like
>          
>          function myload(s)
>             _G[s]={}
>             return assert(loadfile(s..".lua","bt",_G[s]))()
>          end
> 
> How can I do this with the C API? In my case, how can I get access to
> the _G variable? Can I use equal calls for a variable? I would like
> also change the loadfile to luaL_loadstring, can I do this?
> 
> Thanks
> 
> Phil

Hi Phil,

Depending on your version of Lua, you can use LUA_GLOBALSINDEX (5.1) or
the registry (5.2, see http://www.lua.org/manual/5.2/manual.html#4.5).
You can then use lua_gettable/lua_settable/lua_getfield/lua_setfield to
manipulate it.  Alternatively, there is also
lua_getglobal/lua_setglobal.

Also, it's Lua, not LUA. ;)

-Rob

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