filelistmaker.C

#include "TFile.h"
#include "TH1F.h"
#include "TTreeReader.h"
#include "TTreeReaderValue.h"

#include <unordered_map>
#include <fstream>

ofstream lfirst( "list_first.list" );
ofstream lsecond( "list_second.list" );
ofstream lboth( "list_both.list" );

Int_t day( Int_t _run ) {
	return (_run  - 17000000) / 1000;
}

void readFile( string fn ){
	cout << ".";
	
	TFile * f = new TFile( fn.c_str(), "READ" );
	TTreeReader reader( "tof", f );

	TTreeReaderValue<Int_t> runId( reader, "run" );

	unordered_map< Int_t, bool > unqRuns;

	while( reader.Next() ) {
		unqRuns[ *runId ] = true;
	}


	bool first = false;
	bool second = false;

	for ( auto kv : unqRuns ){
		// cout << "Run# = " << kv.first << endl;
		if ( day(kv.first) < 80 ) {
			first = true;
		}
		if ( day(kv.first) > 80 ) {
			second = true;
		}
	}

	if ( first  )
		lfirst << fn << endl;
	if ( second  )
		lsecond << fn << endl;
	if ( first && second )
		lboth << fn << endl;

	f->Close();
}


void fileListMaker(  ){

	ifstream inf("list.lis" );
	std::string line ="";

	while( getline( inf, line ) ){
		// cout << "filename : " << line << endl;
		readFile( line );
	}

	lfirst.close();
	lsecond.close();
	lboth.close();
	cout << endl << endl;


}