osrm-backend/Util/LuaUtil.h
2013-06-26 09:49:00 -04:00

58 lines
2.1 KiB
C++

/*
open source routing machine
Copyright (C) Dennis Luxen, others 2010
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU AFFERO General Public License as published by
the Free Software Foundation; either version 3 of the License, or
any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
or see http://www.gnu.org/licenses/agpl.txt.
*/
#ifndef LUAUTIL_H_
#define LUAUTIL_H_
extern "C" {
#include <lua.h>
#include <lauxlib.h>
#include <lualib.h>
}
#include <boost/filesystem/convenience.hpp>
#include <luabind/luabind.hpp>
#include <iostream>
#include <string>
template<typename T>
void LUA_print(T number) {
std::cout << "[LUA] " << number << std::endl;
}
// Check if the lua function <name> is defined
inline bool lua_function_exists(lua_State* lua_state, const char* name) {
luabind::object g = luabind::globals(lua_state);
luabind::object func = g[name];
return func && (luabind::type(func) == LUA_TFUNCTION);
}
// Add the folder contain the script to the lua load path, so script can easily require() other lua scripts inside that folder, or subfolders.
// See http://lua-users.org/wiki/PackagePath for details on the package.path syntax.
inline void luaAddScriptFolderToLoadPath(lua_State* myLuaState, const char* fileName) {
const boost::filesystem::path profilePath( fileName );
std::string folder = profilePath.parent_path().string();
//TODO: This code is most probably not Windows safe since it uses UNIX'ish path delimiters
const std::string luaCode = "package.path = \"" + folder + "/?.lua;profiles/?.lua;\" .. package.path";
luaL_dostring( myLuaState, luaCode.c_str() );
}
#endif /* LUAUTIL_H_ */