fastadd.cxx

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#include <iostream>
#include <vector>
#include <string>
#include <stdio.h>
 
#include "TKey.h"
#include "TH1D.h"
#include "TH2D.h"
#include "TProfile.h"
#include "TFile.h"
#include "TClass.h"
 
#include "simpletimer.h"
 
 
#include "dataset.h"
 
// #include "Resplot.h"
// #include "TrigInDetAnalysis/Efficiency1D.h"

std::vector<std::string> files;
std::vector<TFile*>      fptr;
 

struct timeval global_timer;
 

std::string depth = ""; 

int ir=0;
 
 
 
 
template<class T>
bool add( const std::string& hname, TKey* tobj ) { 
  
  T* h0 = (T*)tobj->ReadObj();
 
  //  std::cout << "h0 " << h0;
  //  if ( h0 ) std::cout << " : " << h0->GetName();
  //  std::cout << std::endl;
  
  bool changed = false;
  
  if ( h0==0 ) { 
    std::cerr << "object " << hname << " can't be found" << std::endl;
    return false;
  }
 
  if ( h0->GetSumw2N()==0 ) h0->Sumw2();
 
 
  static int count = 0;
 
  for ( unsigned ifile=1 ; ifile<fptr.size() ; ifile++ ) { 
    
    //    std::cout << "TFile* fptr " << fptr[ifile] << " " << files[ifile] << std::endl;
 
    if ( fptr[ifile] ) {  
 
      //      std::cout << "h (get) >" << hname << "<" << std::endl; 
 
      T* h  = (T*)fptr[ifile]->Get(hname.c_str());
 
      
 
      if ( h==0 ) {
    std::cout << "h (add) " << h << "  " << hname << " can't be opened" << std::endl; 
    if ( count>20 ) exit(-1); 
    count++;
    continue;
      }
 
      if ( h->GetSumw2N()==0 ) h->Sumw2();
 
      //      std::cout << "h       " << h->GetName() << std::endl; 
 
      changed = true;
      h0->Add( h );
 
      delete h;
      
    }
  }
  
  
  
  if ( changed ) { 
    h0->SetDirectory(0);
    h0->Write("",TObject::kOverwrite);
    //    h0->Write(); // "",TObject::kOverwrite);
  }
  
  delete h0;
 
  return true;
}
 
 
 
 
 

 
void search(TDirectory* td=0, const std::string& s="") { 
 
  ir++;

 
  if ( ir>10 ) exit(0);
 
 
 
  TDirectory* here = gDirectory;
 
  //  gDirectory->pwd();
 
  std::string ns = s;
 
  if ( ns!="" ) ns += "/"; 
 
  if ( td )  { 
    gDirectory->cd(td->GetName());
 
    ns +=  td->GetName();
 
    std::cout << "\n" << depth << "Directory " << ns; // << std::endl;
  }
 
  std::string savedepth = depth;
  depth += "\t";
 
  //  std::cout << ir << " " << ns << "TDirectory " << gDirectory->GetPath() << " " << gDirectory->GetName() << std::endl;
 
  TList* tl  = gDirectory->GetListOfKeys();
 
  struct timeval tv = simpletimer_start();
 
  //  std::cout << "\ttl " << tl << std::endl;
 
  for ( int i=tl->GetSize() ; i-- ; ) { 
 
    TKey* tobj = (TKey*)tl->At(i);
 
    if ( tobj==0 ) continue;
 
    //    std::cout << "tobj " << tobj;
    //    if ( tobj ) std::cout << " : \t" << tobj->GetName();
    //    std::cout << std::endl; 
    
    if ( std::string(tobj->GetClassName()).find("TDirectory")!=std::string::npos ) { 
      //      std::cout << ns << "Directory " << tobj->GetName() << std::endl;
 
      TDirectory* tnd = (TDirectory*)tobj->ReadObj();
 
      if ( tnd ) search( tnd, ns );
    }
    else { 
      //      bool status = false;
      
      std::string objname = ns;
      if ( objname!="" ) objname += std::string("/") + tobj->GetName();
      
      //      if ( std::string(tobj->GetClassName()).find("TH1")!=std::string::npos )  status = add<TH1>( objname.c_str(), tobj );
      //      if ( std::string(tobj->GetClassName()).find("TH2")!=std::string::npos )  status = add<TH2>( objname.c_str(), tobj );
      if ( std::string(tobj->GetClassName()).find("TH1")!=std::string::npos )       add<TH1>( objname, tobj );
      if ( std::string(tobj->GetClassName()).find("TH2")!=std::string::npos )       add<TH2>( objname, tobj );
      if ( std::string(tobj->GetClassName()).find("TProfile")!=std::string::npos )  add<TProfile>( objname, tobj );
      
      //      if ( !status ) std::cerr << "bad status" << std::endl;
    }
 
  }
 
  const double t = simpletimer_stop(tv);
  
  const double global_time = simpletimer_stop(global_timer);
 
  
  std::cout << "\tprocessed directory in " << t*0.001 << " s  from " << global_time*0.001 << " s";
 
 
  depth = std::move(savedepth);
 
  ir--;
 
  here->cd();
 
}
 
 
 
 
#include <cstdlib>
 
 
 
bool file_exists(const std::string& s) {   
  if ( FILE* testfile=fopen(s.c_str(),"r") ) { 
    fclose(testfile);
    return true;
  }
  return false;
}
 
 
 
 
void cost( const std::string& outputfile ) { 

  if ( files.size()<2 ) return;
 
  std::cout << "processing" << std::endl;

  if ( file_exists(outputfile) ) { 
    std::cerr << "output file " << outputfile << " already exists" << std::endl;
    return;
  }
 
  std::cout << "copying file to " << outputfile << std::endl;

  system( ("cp "+files[0]+" "+outputfile).c_str() );
 

 
  std::cout << "opening root files" << std::endl;
 
  fptr.resize(files.size());
 
 
  std::cout << "opening " << files[0] << std::endl;

  fptr[0] = new TFile( outputfile.c_str(), "update" );
 
  if ( fptr[0]==0 ) { 
    std::cerr << "cannot open " << outputfile.c_str() << std::endl;
    return;
  }
 
  for ( unsigned ifile=1 ; ifile<files.size() ; ifile++ ) {
    std::cout << "opening " << files[ifile] << std::endl;
    fptr[ifile] = new TFile( files[ifile].c_str() );
  }
  
 
  for ( unsigned ifile=0 ; ifile<files.size() ; ifile++ ) {
    if ( fptr[ifile]==0 ) { 
      std::cerr << "file " << files[ifile] << " cannot be openened" << std::endl;
      return;
    }
  }
  
  fptr[0]->cd();
  
  TDirectory* here = gDirectory;
 
  global_timer = simpletimer_start();

  search();
  
  here->cd();
  
  std::cout << "closing the files" << std::endl; 

  for ( unsigned ifile=1 ; ifile<files.size() ; ifile++ ) { 
    if ( fptr[ifile] ) { 
      fptr[ifile]->Close();
      delete fptr[ifile];
    }
  }

  //  f0->Write();
  fptr[0]->Close();
 
}
 
 
 
 
int usage(std::ostream& s, int , char** argv) { 
  s << "Usage: " << argv[0] << " [OPTIONS] -o output.root  input1.root ... inputN.root\n\n";
  s << "    -o filename   \tname of output (filename required)\n";
  s << "    -h, --help    \tdisplay this help\n";
  s << std::endl;
  return 0;
}
 
 
 
 
int main(int argc, char** argv) { 
 
  //  if ( argc<3 ) usage( std::cerr << "not enough command options", argc, argv );
  if ( argc<3 ) return usage( std::cerr, argc, argv );
 
 
  for ( int i=1 ; i<argc ; i++ ) { 
    if ( std::string(argv[i])=="-h" || std::string(argv[i])=="--help" )  return usage( std::cout, argc, argv );
  }
  
  bool verbose = false; 
 
  std::string output_file = "";
 
  for ( int i=1 ; i<argc ; i++ ) { 
    if      ( std::string(argv[i])=="--verbose" ) verbose = true;
    else if ( std::string(argv[i])=="-o" ) { 
      if ( ++i<argc ) output_file = argv[i];
      else  return usage( std::cerr, argc, argv );
    }
    else { 
      files.push_back(argv[i]);
    }
  }
 

  if ( output_file == "" ) return usage( std::cerr, argc, argv );
  
  //  dataset data("test_EF");
  //  files = data.datafiles();
  
 
 
  if ( files.size()<1 ) return usage( std::cerr, argc, argv );
 
  for ( size_t i=files.size() ; i-- ; ) if ( files[i]==output_file ) return usage( std::cerr, argc, argv ); 
  
  //  time the actual running of the cost() routine
  
  if ( verbose ) std::cout << "timing" << std::endl;
 
  struct timeval tv = simpletimer_start();
 
  cost(output_file);
 
  double t = simpletimer_stop(tv);
 
  std::cout << "\ntotal time " << t*0.001 << " s  (" << (t*0.001/60) << " min)" << std::endl;
 
  return 0;
}