/*

 *

 * (C) 2013-25 - ntop.org

 *

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation; either version 3 of the License, or

 * (at your option) 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 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.

 *

 */

#ifndef _BITMAP_H_

#define _BITMAP_H_

#include "ntop_includes.h"

template <typename T>

class Bitmap {

 private:

  T bitmap;

 public:

  Bitmap() { reset(); }

  static inline u_int numBits() { return sizeof(bitmap) * 8; };

  inline void reset() { bitmap = 0; };

  inline void setBit(u_int8_t id) { bitmap |= ((T)1) << id; };

  inline void clearBit(u_int8_t id) { bitmap &= ~(((T)1) << id); };

  inline bool isSetBit(u_int8_t id) const {

    return (((bitmap >> id) & 1) ? true : false);

  };

  inline void bitmapOr(const Bitmap b) { bitmap |= b.bitmap; };

  inline void set(const Bitmap *b) { bitmap = b->bitmap; };

  inline bool equal(const Bitmap *b) const { return bitmap == b->bitmap; };

  void lua(lua_State *vm, const char *label) const {

    lua_newtable(vm);

    for (u_int i = 0; i < numBits(); i++) {

      if (isSetBit(i)) {

        lua_pushboolean(vm, true); /* The boolean indicating this risk is set */

        lua_pushinteger(

            vm, i); /* The integer risk id, used as key of this lua table */

        lua_insert(vm, -2);

        lua_settable(vm, -3);

      }

    }

    lua_pushstring(vm, label);

    lua_insert(vm, -2);

    lua_settable(vm, -3);

  };

};

#endif /* _BITMAP_H_ */