C ++ embedded Lua to read the configuration file

I have been writing tools for a long time. I have encountered some problems and solved them by Google. Here I want to extract and share the problem-solving results, which is also convenient for me to use later. ^_^
Write tools should be as flexible as possible and highly configurable, and configuration files are indispensable.
I used a custom configuration file before (my other articleArticleMentioned in: http://www.cnblogs.com/MikeZhang/archive/2011/11/19/2255169.html), flexible is flexible, can write a little trouble, and if you want to write part of the logic outside, getting a function in the configuration file is not random-you need to write a script engine for parsing ......

Finally, we decided to use Lua as the parser of the configuration file. Here is a simple demo:

 1   /*  
  2   File: Demo. cpp
  3   Author: Mike
  4   E-mail: Mike_Zhang@live.com
  5  */ 
 6 # Include <stdio. h>
 7   Extern   "  C  " 
 8 {
 9 # Include "  Lua. h  " 
 10 # Include " Lualib. h  " 
 11 # Include "  Lauxlib. h  " 
 12 }
 13  
 14 Lua_state * l;
 15   Const   Char * Lua_script = "  Function add (a, B) Return (a + B) End " ;
 16  
 17   Int Lua_add (lua_state * l, Const   Char * Fun_name, Int X, Int Y)
 18 {
 19       Int RET;
 20 Lua_getglobal (L, fun_name );
21 Lua_pushnumber (L, X );
 22 Lua_pushnumber (L, y );
 23 Lua_call (L, 2 , 1 );
 24 Ret = ( Int ) Lua_tointeger (L ,- 1 );
 25 Lua_pop (L, 1 );
 26      Return RET;
 27 }
 28  
 29   Int Test ()
 30 {
 31       Int Ret = 0 ;
 32 Lua_state * l = lua_open (); /*  Opens Lua  */ 
33 Lual_openlibs (L );
 34       If (Lual_dostring (L, lua_script )) //  Run Lua script  
  35 {
 36 Printf ( "  Error! \ N  " );
 37 Lua_close (L );
 38          Return - 1 ;
 39 }
 40 Ret = lua_add (L, "  Add  " , 4 , 5 );
 41 Printf ( "  % D \ n  " , RET );
42 Lua_close (L );
 43       Return   0 ;
 44 }
 45  
 46   Int Main ()
 47 {
 48 Test ();
 49       Return   0 ;
50 }

In addition, I wrote a class for calling Lua in C ++. If you are interested, you can find it here:

Project address: http://sourceforge.net/projects/cppcalllua/
SVN access: SVN checkout http://svn.code.sf.net/p/cppcalllua/code-0/trunk cppcalllua-code-0

TIPS: This is a codeblocks project. Project File: cppcalllua. White