/*
 *  TTextToVector.h
 *  TTextToVector
 *
 *  Created by Hugh Dickinson on 14/01/2008.
 *  Copyright 2008 Hugh Dickinson. All rights reserved.
 *
 */
 
 #ifndef __TTextToVector__
 #define __TTextToVector__
 
 #include <iostream>
 #include <fstream>
 #include <vector>
 #include <string>
 #include <TString.h>
 #include <TObjString.h>
 #include <TObjArray.h>
 #include <TArrayD.h>
 
 
 class TTextToVector{
 
 public :
 
 TTextToVector(const char * inFile);
 virtual ~TTextToVector();
 Double_t * GetCol(Int_t col);
 Double_t * GetRow(Int_t row);
 Double_t GetValue(Int_t col, Int_t row);
 Int_t GetNumRows();
 Int_t GetNumCols();
 void PrintRows();
 void PrintCols();
 
 private :
 TString * fFilename; // The name of the file to be processed into vectors.
 std::vector<TArrayD*> * fVectorOfRows; // The vector of rows in the text file.
 std::vector<TArrayD*> * fVectorOfCols; // The vector of columns in the text file.
 Int_t fNumRows; // the number of rows in the file.
 Int_t fNumCols; // the number of columns in the file.
 // function opens a text file.
 std::ifstream * OpenFile(TString * filename);
 // function checks if a file is open
 bool CheckFile(std::ifstream * fileStream);
 // function returns TObjArray of TObjStrings containing the lines of the file.
 TObjArray * ReadFile(std::ifstream * fileStream);
 // function converts each line of the file into a TArrayD of Double_ts - returns std::vector<TArrayD*>. 
 std::vector<TArrayD*> * MakeRowVectors(TObjArray * rowStrings);
 // function to transpose row vectors into columns - returns std::vector<TArrayD*>; 
 std::vector<TArrayD*> * MakeColumnVectors(std::vector<TArrayD*> * rowVectors);
 // function to convert a string into a TArrayD;
 TArrayD * StringToDoubles(TString * string); 
 
 ClassDef(TTextToVector, 0); // A class to extract rows and columns of double precision values from a columnar text file.
 
 };
 
 #endif