xref: /freebsd/contrib/lua/src/linit.c (revision 410556f1f10fd35b350102725fd8504c3cb0afc8)
1 /*
2 ** $Id: linit.c $
3 ** Initialization of libraries for lua.c and other clients
4 ** See Copyright Notice in lua.h
5 */
6 
7 
8 #define linit_c
9 #define LUA_LIB
10 
11 /*
12 ** If you embed Lua in your program and need to open the standard
13 ** libraries, call luaL_openlibs in your program. If you need a
14 ** different set of libraries, copy this file to your project and edit
15 ** it to suit your needs.
16 **
17 ** You can also *preload* libraries, so that a later 'require' can
18 ** open the library, which is already linked to the application.
19 ** For that, do the following code:
20 **
21 **  luaL_getsubtable(L, LUA_REGISTRYINDEX, LUA_PRELOAD_TABLE);
22 **  lua_pushcfunction(L, luaopen_modname);
23 **  lua_setfield(L, -2, modname);
24 **  lua_pop(L, 1);  // remove PRELOAD table
25 */
26 
27 #include "lprefix.h"
28 
29 
30 #include <stddef.h>
31 
32 #include "lua.h"
33 
34 #include "lualib.h"
35 #include "lauxlib.h"
36 
37 
38 /*
39 ** these libs are loaded by lua.c and are readily available to any Lua
40 ** program
41 */
42 static const luaL_Reg loadedlibs[] = {
43   {LUA_GNAME, luaopen_base},
44   {LUA_LOADLIBNAME, luaopen_package},
45   {LUA_COLIBNAME, luaopen_coroutine},
46   {LUA_TABLIBNAME, luaopen_table},
47   {LUA_IOLIBNAME, luaopen_io},
48   {LUA_OSLIBNAME, luaopen_os},
49   {LUA_STRLIBNAME, luaopen_string},
50   {LUA_MATHLIBNAME, luaopen_math},
51   {LUA_UTF8LIBNAME, luaopen_utf8},
52   {LUA_DBLIBNAME, luaopen_debug},
53   {NULL, NULL}
54 };
55 
56 
57 LUALIB_API void luaL_openlibs (lua_State *L) {
58   const luaL_Reg *lib;
59   /* "require" functions from 'loadedlibs' and set results to global table */
60   for (lib = loadedlibs; lib->func; lib++) {
61     luaL_requiref(L, lib->name, lib->func, 1);
62     lua_pop(L, 1);  /* remove lib */
63   }
64 }
65 
66