EvtParserXml.hh

//--------------------------------------------------------------------------
//
// Environment:
//      This software is part of the EvtGen package developed jointly
//      for the BaBar and CLEO collaborations.  If you use all or part
//      of it, please give an appropriate acknowledgement.
//
// Copyright Information: See EvtGen/COPYRIGHT
//      Copyright (C) 1998      Caltech, UCSB
//
// Module: EvtGen/EvtParserXml.hh
//
// Description:
//
// Modification history:
//
//    DCC     24 October, 2011         Module created
//
//------------------------------------------------------------------------

#ifndef EVTPARSERXML_HH
#define EVTPARSERXML_HH

#include <string>
#include <vector>

#include <fstream>

class EvtParserXml {
public:
  EvtParserXml();
  ~EvtParserXml();

  bool open(std::string filename);
  bool close();

  bool readNextTag();

  std::string getTagTitle() { return _tagTitle; }
  std::string getParentTagTitle();
  int getLineNumber() { return _lineNo; }
  bool isTagInline() { return _inLineTag; }
  
  std::string readAttribute(std::string attribute, std::string defaultValue="");
  bool readAttributeBool(std::string attribute, bool defaultValue=false);
  int readAttributeInt(std::string attribute, int defaultValue=-1);
  double readAttributeDouble(std::string attribute, double defaultValue=-1.);

private:

  std::ifstream _fin;
  std::string _line;
  int _lineNo;

  std::string _tag;
  std::string _tagTitle;
  bool _inLineTag;
  std::vector<std::string> _tagTree;

  bool processTagTree();

  bool expandEnvVars(std::string& str);
  bool isAlphaNum(char c);
}; 

#endif