Re: How to load lua extensions using C API?

[Miles Bader <miles@...>]

Newton Kim <babynewton73@gmail.com> writes:
> What C API should I call to let the lua engine load my extension?
> Thank you in advance.

You can execute other bits of Lua code from the C api too...  so you
_could_ just include a small constant string in your C program,
containing Lua "init" code that does all the module loading and other
setup you want, and run that code snippet before loading the main
script:

  static const char init_lua_code[] = "...some lua code...";

  luaL_loadstring (L, init_lua_code);
  // optionally push arguments the lua code uses
  lua_call (L, 0/*number of args*/, 0);

Alternatively, it's easy to just call the Lua require function:

  lua_getglobal (L, "require");		 // function
  lua_pushstring (L, "mymodulename");    // arg 0
  lua_call (L, 1, 1);			 // call require; returns 1 val

  // If it's a 5.1/5.2-style module, it will return the module table, so
  // store that in a global variable:
  lua_setglobal (L, "mymodulevar");       // maybe same name as above


-miles

-- 
On a bad day, I see brewers still talking as though all beer were
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steelworkers who have in reality long ago sought work as striptease
artists.  [Michael Jackson]