/usr/include/osgWidget/Lua is in libopenscenegraph-dev 3.2.3+dfsg1-2+b4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 | /* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2008 Robert Osfield
 *
 * This library is open source and may be redistributed and/or modified under
 * the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
 * (at your option) any later version.  The full license is in LICENSE file
 * included with this distribution, and on the openscenegraph.org website.
 *
 * This library 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
 * OpenSceneGraph Public License for more details.
*/
// Code by: Jeremy Moles (cubicool) 2007-2008
#ifndef OSGWIDGET_LUA
#define OSGWIDGET_LUA
#include <osgWidget/WindowManager>
namespace osgWidget {
// Externally defined; does this work in Windows?
struct LuaEngineData;
// The actual Engine itself. Every attempt is made to export the implemenation into the
// source file, rather than having it here.
class OSGWIDGET_EXPORT LuaEngine: public ScriptEngine
{
    public:
        LuaEngine(WindowManager* = 0);
        bool initialize ();
        bool close      ();
        bool eval       (const std::string&);
        bool runFile    (const std::string&);
    protected:
        LuaEngineData* _data;
        WindowManager* _wm;
};
}
#endif
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