#ifndef ALIHEPDATAPARSER_H
#define ALIHEPDATAPARSER_H

/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
 * See cxx source for full Copyright notice                               */

//-------------------------------------------------------------------------
//                      Implementation of   Class AliHEPDataParser
//
//  This class is used to save the content of hisograms/graphs in the
//  HEP data format and viceversa
//  Author: Michele Floris, CERN
//-------------------------------------------------------------------------

#include "TObject.h"
#include "TString.h"

class TH1;
class TGraph;

class AliHEPDataParser : public TObject{


public:
  AliHEPDataParser();
  AliHEPDataParser(TH1 * hStat, TH1 * hSyst);
  AliHEPDataParser(TGraph * grStat, TGraph * grSyst);
  AliHEPDataParser(const char * hepfileName);

  ~AliHEPDataParser();
  
  TH1 * GetHistoStat() { return fHistStat;}
  TH1 * GetHistoSyst() { return fHistSyst;}
  TGraph * GetGraphStat() { return fGraphStat;}
  TGraph * GetGraphSyst() { return fGraphSyst;}
  void SaveHEPDataFile(const char * hepfileName, Bool_t trueUseGraphFalesUseHisto = 0);

  void SetName(const char * name) { fValueName = name;}
  void SetXaxisName (TString val) {fXaxisName = val ;}
  void SetTitle(TString val) {fTitle = val;}
  void SetReaction(TString val) {fReaction = val;}
  void SetEnergy(TString val) {fEnergy = val;}
  void SetRapidityRange(TString val) {fRapidityRange = val;}
  void SetPrecision(Int_t   val) {fPrecision = val;}


protected:

  Double_t RoundToSignificantFigures(double num, int n) ;
  TString GetFixWidthCol(Double_t number, Int_t width) ;


  TH1 * fHistStat; // statistical errors (hist)
  TH1 * fHistSyst; // systematic errors (hist) 
  TGraph * fGraphStat; // statistical errors (hist)
  TGraph * fGraphSyst; // systematic errors (hist)  
  TObjArray * fHEPDataFileLines;// TClones array of TObjString
  TString fValueName; // title for the y axis on the ascii file
  TString fXaxisName; // title for the y axis
  TString fTitle; // title for the HEP DATA file
  TString fReaction; // Raction ,e.g. RE : Pb + Pb --> pbar + X
  TString fEnergy; // Raction ,e.g. sqrts : 2760 GeV
  TString fRapidityRange; // Rapidity ABS(YRAP) : 0.5'
  Int_t   fPrecision; // number of significant figures for rounding

  ClassDef(AliHEPDataParser, 2);
    
private:


  AliHEPDataParser(const AliHEPDataParser&);
  AliHEPDataParser& operator=(const AliHEPDataParser&);
};

#endif