/afs/cern.ch/work/a/aaltunda/public/www/CMSSW_6_2_7/src/Alignment/CocoaUtilities/interface/ALIFileIn.h

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//   COCOA class header file
//Id:  ALIFileIn.h
//CAT: Model
//
//   istream class for handling the reading of files
// 
//   History: v1.0 
//   Pedro Arce

#ifndef FILEIN_H
#define FILEIN_H

#include <fstream>
#include <iostream>

#include <vector>

#include "Alignment/CocoaUtilities/interface/CocoaGlobals.h"


class ALIFileIn 
{
 public:
  ALIFileIn(){};
  ~ALIFileIn(){}
 private:
   ALIFileIn( const ALIstring& name ): theName(name){}

 public:
  // Get the only instance opening the file
  static ALIFileIn& getInstance( const ALIstring& name ); 
  // Get the only instance when file should be already opened
  static ALIFileIn& getInstanceOpened( const ALIstring& name ); 

  // Read a line and transform it to a vector of words 
  ALIint getWordsInLine( std::vector<ALIstring>& wl );

  // Print out an error message indicating the line being read
  void ErrorInLine();

 // Access data members
  const ALIint nline() { return theLineNo[theCurrentFile]; }

  const ALIstring& name() { return theName; }

  ALIbool eof();
  void close();

 private:
  void openNewFile( const char* filename );

 private:
  std::vector< std::ifstream* > theFiles;
  // Number of line being read
  std::vector<ALIint> theLineNo;
  std::vector<ALIstring> theNames;
  int theCurrentFile;  // index of file being read in theFiles

 // private DATA MEMEBERS
  // Vector of class instances (each one identified by its name)
  static std::vector<ALIFileIn*> theInstances;
 
  ALIstring theName;

};

#endif