Executing a Lua script

In some projects, you may have a file layer abstraction, or you may get a Lua script from a remote server. Then, you cannot pass a file path to the Lua library and ask it to load it for you. You may also want to load the file yourself as a string to do more auditing before executing it. In those situations, you can ask the Lua library to execute a string as a Lua script.

To do this, we will add a new capability to our Lua executor. In LuaExecutor.h, add one more function:

class LuaExecutor
{
public:
    void execute(const std::string &script);
};

This new function will accept the Lua code in a string directly and execute it.

In LuaExecutor.cc, add this implementation:

void LuaExecutor::execute(const std::string &script)
{
    if (luaL_loadstring(L, script.c_str()))
    {
        std::cerr << "Failed to prepare script: "
&...