/*

** $Id: linit.c $

** Initialization of libraries for lua.c and other clients

** See Copyright Notice in lua.h

*/

#define linit_c

#define LUA_LIB

#include "lprefix.h"

#include <stddef.h>

#include "lua.h"

#include "lualib.h"

#include "lauxlib.h"

#include "llimits.h"

/*

** Standard Libraries. (Must be listed in the same ORDER of their

** respective constants LUA_<libname>K.)

*/

static const luaL_Reg stdlibs[] = {

  {LUA_GNAME, luaopen_base},

  {LUA_LOADLIBNAME, luaopen_package},

  {LUA_COLIBNAME, luaopen_coroutine},

  {LUA_DBLIBNAME, luaopen_debug},

  {LUA_IOLIBNAME, luaopen_io},

  {LUA_MATHLIBNAME, luaopen_math},

  {LUA_OSLIBNAME, luaopen_os},

  {LUA_STRLIBNAME, luaopen_string},

  {LUA_TABLIBNAME, luaopen_table},

  {LUA_UTF8LIBNAME, luaopen_utf8},

  {NULL, NULL}

};

/*

** require and preload selected standard libraries

*/

LUALIB_API void luaL_openselectedlibs (lua_State *L, int load, int preload) {

  int mask;

  const luaL_Reg *lib;

  luaL_getsubtable(L, LUA_REGISTRYINDEX, LUA_PRELOAD_TABLE);

  for (lib = stdlibs, mask = 1; lib->name != NULL; lib++, mask <<= 1) {

    if (load & mask) {  /* selected? */

      luaL_requiref(L, lib->name, lib->func, 1);  /* require library */

      lua_pop(L, 1);  /* remove result from the stack */

    }

    else if (preload & mask) {  /* selected? */

      lua_pushcfunction(L, lib->func);

      lua_setfield(L, -2, lib->name);  /* add library to PRELOAD table */

    }

  }

  lua_assert((mask >> 1) == LUA_UTF8LIBK);

  lua_pop(L, 1);  /* remove PRELOAD table */

}