/*
 *  Copyright (c) 2013 Croatia Control Ltd. (www.crocontrol.hr)
 *
 *  This file is part of Asterix.
 *
 *  Asterix 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.
 *
 *  Asterix 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 Asterix.  If not, see <http://www.gnu.org/licenses/>.
 *
 *
 * AUTHORS: Damir Salantic, Croatia Control Ltd.
 *
 */

#ifndef DATAITEMBITS_H_
#define DATAITEMBITS_H_

#include <string>
#include <list>

class BitsValue
{
public:
  BitsValue(int val) { m_nVal = val; }
  BitsValue(int val, std::string strDescription) { m_nVal = val; m_strDescription = strDescription; }

  int m_nVal;
  std::string m_strDescription;
};

class DataItemBits : public DataItemFormat
{
public:
  DataItemBits(int id=0);
  DataItemBits(const DataItemBits& obj);
  virtual
  ~DataItemBits();

  std::string m_strShortName;
  std::string m_strName;
  int m_nFrom;
  int m_nTo;

  typedef enum
  {
	DATAITEM_ENCODING_UNSIGNED = 0,
	DATAITEM_ENCODING_SIGNED,
	DATAITEM_ENCODING_SIX_BIT_CHAR,
	DATAITEM_ENCODING_HEX_BIT_CHAR,
	DATAITEM_ENCODING_OCTAL,
	DATAITEM_ENCODING_ASCII
  } _eEncoding;

  _eEncoding m_eEncoding;

  bool m_bIsConst; //!< if true this is fixed value (from m_nConst)
  int m_nConst;

  std::string m_strUnit;
  double m_dScale;
  bool m_bMaxValueSet;
  double m_dMaxValue;
  bool m_bMinValueSet;
  double m_dMinValue;

  bool m_bExtension; //!< item extension (used only in Variable length items)
  int m_nPresenceOfField; //!< presence of compound data item (used only in Compound items)
  std::list<BitsValue*> m_lValue;

  bool m_bFiltered; //! item shall be printed when filter is applied

  DataItemBits* clone() const { return new DataItemBits(*this); } // Return clone of object
  bool getText(std::string& strResult, std::string& strHeader, const unsigned int formatType, unsigned char* pData, long nLength); // appends value to strResult
  std::string printDescriptors(std::string header); // print items format descriptors
  bool filterOutItem(const char* name); // mark item for filtering
  bool isFiltered(const char*) {return m_bFiltered; } // true if item is in filter (shall be printed)
  bool isBits() 		{ return true; }; // true if this is Bits description format
  const char* getDescription(const char* field, const char* value ); // return description ef element

#if defined(WIRESHARK_WRAPPER) || defined(ETHEREAL_WRAPPER)
  fulliautomatix_definitions* getWiresharkDefinitions();
  fulliautomatix_data* getData(unsigned char* pData, long len, int byteoffset);
#endif

#if defined(PYTHON_WRAPPER)
  PyObject* getObject(unsigned char* pData, long nLength, int description);
  void insertToDict(PyObject* p, unsigned char* pData, long nLength, int description);
#endif

  long getLength(const unsigned char* pData);

private:
  unsigned char* getBits(unsigned char* pData, int bytes, int frombit, int tobit);
  unsigned long getUnsigned(unsigned char* pData, int bytes, int frombit, int tobit);
  signed long getSigned(unsigned char* pData, int bytes, int frombit, int tobit);
  unsigned char* getSixBitString(unsigned char* pData, int bytes, int frombit, int tobit);
  unsigned char* getHexBitString(unsigned char* pData, int bytes, int frombit, int tobit);
  unsigned char* getOctal(unsigned char* pData, int bytes, int frombit, int tobit);
  char* getASCII(unsigned char* pData, int bytes, int frombit, int tobit);


};

#endif /* DATAITEMBITS_H_ */
