Re: [LuaCheia-list] lib_open in nested table

["Martin Spernau" <martin@...>]

From: "Wim Couwenberg" <w.couwenberg@chello.nl>
> Umm...  you just push them into the table?  Like so (Lua 4 API)
<snip/>

Ok here is what I have so far (Lua5, altho I think it should be almsot same
in 4):
(inspired by the lauxlib 'luaL_openlib')
###

/* register a number of C functions in a subtable of 'lib' */
const char * basetablename = "lib";
const char * libname = "my";

/* get/create the global lib table */
lua_pushstring(L, basetablename);
lua_gettable(L, LUA_GLOBALSINDEX);  /* check whether lib already exists */
if (lua_isnil(L, -1)) {  /* no? */
        lua_pop(L, 1);
        lua_newtable(L);  /* create it */
}
lua_insert(L, -1);

/* we now have a table in the global scope named 'lib' */
/* we need to put our functions into a subtable of that */
/* we also need to allow for that sub-table to already exist! */

lua_pushstring(L, libname);
lua_gettable(L, -1);  /* check whether subtable already exists */
if (lua_isnil(L, -1)) {  /* no? */
        lua_pop(L, 1);
        lua_newtable(L);  /* create it */
}
lua_insert(L, -1);

/* now we can simply put our functions into that subtable */
{
        lua_pushstring(L, "func1name");
        lua_pushcfunction(L, func1);
        lua_settable(L, -3);

        lua_pushstring(L, "func2name");
        lua_pushcfunction(L, func2);
        lua_settable(L, -3);

        /* repeat for all functions to go in the libtable */
}

/* here is where I lost it ;) */
###

I'm not 100% sure how to return the tables, as I need to allow that both
'root' table and 'subtable' already have other entries....