lua/linit.c
Roberto Ierusalimschy 90e2a716c8 details + comments
2009-09-05 09:39:29 -03:00

73 lines
1.9 KiB
C

/*
** $Id: linit.c,v 1.19 2009/07/01 16:16:40 roberto Exp roberto $
** Initialization of libraries for lua.c and other clients
** See Copyright Notice in lua.h
*/
/*
** If you embed Lua in your program and need to open the standard
** libraries, call luaL_openlibs in your program. If you need a
** different set of libraries, copy this file to your project and edit
** it to suit your needs.
*/
#define linit_c
#define LUA_LIB
#include "lua.h"
#include "lualib.h"
#include "lauxlib.h"
/*
** these libs are loaded by lua.c and are readily available to any Lua
** program
*/
static const luaL_Reg loadedlibs[] = {
{"_G", luaopen_base},
{LUA_LOADLIBNAME, luaopen_package},
{LUA_TABLIBNAME, luaopen_table},
{LUA_IOLIBNAME, luaopen_io},
{LUA_OSLIBNAME, luaopen_os},
{LUA_STRLIBNAME, luaopen_string},
{LUA_BITLIBNAME, luaopen_bit},
{LUA_MATHLIBNAME, luaopen_math},
{NULL, NULL}
};
/*
** these libs are preloaded and must be required before used
*/
static const luaL_Reg preloadedlibs[] = {
{LUA_DBLIBNAME, luaopen_debug},
{NULL, NULL}
};
LUALIB_API void luaL_openlibs (lua_State *L) {
const luaL_Reg *lib;
/* call open functions from 'loadedlibs' */
for (lib = loadedlibs; lib->func; lib++) {
lua_pushcfunction(L, lib->func);
lua_pushstring(L, lib->name);
lua_call(L, 1, 0);
}
/* add open functions from 'preloadedlibs' into 'package.preload' table */
luaL_findtable(L, LUA_GLOBALSINDEX, "package.preload", 0);
for (lib = preloadedlibs; lib->func; lib++) {
lua_pushcfunction(L, lib->func);
lua_setfield(L, -2, lib->name);
}
lua_pop(L, 1); /* remove package.preload table */
#ifdef LUA_COMPAT_DEBUGLIB
lua_getglobal(L, "require");
lua_pushliteral(L, LUA_DBLIBNAME);
lua_call(L, 1, 0); /* call 'require"debug"' */
#endif
}