osrm-backend/Util/Lua.h
2012-12-28 22:40:00 +01:00

45 lines
1.7 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 LUA_UTIL_
#define LUA_UTIL_
#include <string>
#include <boost/filesystem/convenience.hpp>
bool lua_function_exists(lua_State* lua_state, const char* name)
{
using namespace luabind;
object g = globals(lua_state);
object func = g[name];
return func && type(func) == LUA_TFUNCTION;
}
void luaAddScriptFolderToLoadPath(lua_State* myLuaState, const char* fileName) {
//add the folder contain the script to the lua load path, so script can easily require() other lua scripts inside that folder
//see http://lua-users.org/wiki/PackagePath for details on the package.path syntax
const boost::filesystem::path profilePath( fileName );
const std::string folder = profilePath.parent_path().c_str();
const std::string luaCode = "package.path = \"" + folder + "/?.lua;\" .. package.path";
luaL_dostring(myLuaState,luaCode.c_str());
}
#endif /* LUA_UTIL_ */