Setting the lua environment

[Martin Slater <mslater@...>]

Hi there,


I'm using luabind in a data conversion utility that uses lua scripts to 
drive conversion, as resources are encountered that a file relies on it 
recursively converts these. The problem I am having it that i'm using 
lua global variables to pass information into the script but when it 
gets called again from within a script (c++ side) these obviously get 
overwritten so when the recursively called script is done the original 
has its globals set. I think I need to do something with lua_setfenv and 
LUA_GLOBALSINDEX but have got nowhere in resolving this problem as I'm 
pretty much a lua noob thanks to luabind and the simpicity of the 
scripts we use. The code I am using is at the end of the post.

Can anyone help me resolve this ?

thanks

Martin


    std::string Driver::ProcessFile(const fs::path &inputPath, const 
fs::path &outDirectory, std::string scriptPath)
    {
        // setup script global variables - just hides the manual lua 	 
calls to set them up
        luabind::object globals = luabind::get_globals(m_luaState);
        globals["InputPath"]  = inputPath.string();
        globals["InputFile"]  = inputPath.leaf();
        globals["OutputDir"]  = outDirectory.string();

        if(lua_dofile(m_luaState, scriptPath.c_str()) != 0) {
            // get the error string from the top of the stack
            const char *errStr = lua_tostring(m_luaState, 0);
            std::string error;

            error = (boost::format("Failed executing - %s - %s") % 
scriptPath % (errStr ? errStr : "Unknown failure")).str();

            throw Core::Exception(error);
        }

        return m_outFilePath;
    }



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