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: "
&...