hcg.cxx

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/*
  Copyright (C) 2002-2025 CERN for the benefit of the ATLAS collaboration
*/
//
//   @file    hanconfig.cxx         
//            navigates through the directory structure of a monitoring 
//            root files and write out some han config boiler plate
//            
//   @author M.Sutton
// 
//      
//
 
 
#include <iostream>
#include <vector>
#include <string>
#include <map>
#include <set>
 
#include <cstdlib>
#include <cstdio>
 
#include <fstream>
 
#include <sys/stat.h>
 
#include "simpletimer.h"
#include "node.h"
#include "addnode.h"
#include "spacer.h"
 
#include "TStyle.h"
#include "TCanvas.h"
#include "TKey.h"
#include "TH1D.h"
#include "TH2D.h"
#include "TProfile.h"
#include "TFile.h"
#include "TClass.h"
#include "TDirectory.h"
 
#include "TPad.h"
#include <algorithm>
 
#include "CxxUtils/checker_macros.h"
ATLAS_NO_CHECK_FILE_THREAD_SAFETY;  // standalone app

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

std::string date() { 
  time_t t;
  time(&t);
  std::string a = ctime(&t);
  std::string b = "";
  for ( unsigned i=0 ; i<a.size()-1 ; i++ ) b+=a[i];
  return b;
}
 
 
bool file_exists( const std::string& file ) { 
  struct stat buff;
  return stat(file.c_str(),&buff)==0;   
}
 
bool verbose = false; 

std::ostream* outp = &std::cout;
 
 
bool allhists = true;
 
std::string base     = "HLT";
 
std::string outref = "";
 
std::string algorithm = "HLT_Histogram_Not_Empty&GatherData";

//  struct timeval global_timer;
 
 
std::string description = "https://twiki.cern.ch/twiki/bin/view/Atlas/HltTrackingDataQualityMonitoring#Tier0";
 

std::map<std::string, std::string> remap;

std::set<std::string> exclude; 

std::map<std::string, int> dirs;
 
 
std::vector<std::string> tags;
 
template<typename T>
std::ostream& operator<<( std::ostream& s, const std::vector<T>& v ) {
  if ( v.empty() ) return s;
  for ( size_t i=0 ; i<v.size() ; i++ ) s << v[i] << "\n";
  return s;
}
 
bool contains( const std::string& s, const std::string& regx ) { return s.find(regx)!=std::string::npos; } 
 
 
 
template<typename T>
std::ostream& operator<<( std::ostream& s, const std::vector<T*>& v ) {
  if ( v.empty() ) return s;
  for ( int i=0 ; i<v.size() ; i++ ) s << *v[i] << "\n";
  return s;
}
 
 

template<class T>
T* get( TKey* tobj ) { 
  TObject* a = tobj->ReadObj()->Clone();
  static_cast<TH1*>(a)->SetDirectory(0);
  return static_cast<T*>(a);
}
 

std::string find( const std::string& s ) { 
  std::map<std::string, std::string>::const_iterator itr = remap.find(s);
  if ( itr!=remap.end() ) return itr->second;
  else                    return s;
} 
 

int count( std::string s, const std::string& regx ) {
  size_t p = s.find( regx );
  int i=0;
  while ( p!=std::string::npos ) {
    i++;
    s.erase( 0, p+1 );
    p = s.find( regx );
  } 
  return i;
}
 
 
 
 
// chop tokens off the front of a string
std::string chop(std::string& s1, const std::string& s2)
{
  std::string::size_type pos = s1.find(s2);
  std::string s3;
  if ( pos == std::string::npos ) {
    s3 = s1;
    s1.erase(0, s1.size());
  }
  else {
    s3 = s1.substr(0, pos); 
    s1.erase(0, pos+s2.size());
  }
  return s3;
} 
 
 
std::vector<std::string> split( const std::string& s, const std::string& t=":"  ) {
    
    std::string s2 = s;
    size_t pos = s2.find(t);
    
    std::vector<std::string> tags;
    
    while ( pos!=std::string::npos ) { 
      tags.push_back( chop(s2,t) );
      pos = s2.find(t);
    }
    
    tags.push_back(std::move(s2));
    
    return tags;
}
 
 
// chop tokens off the front of a string but not including 
// chop character
std::string chopex(std::string& s1, const std::string& s2)
{
  std::string::size_type pos = s1.find(s2);
  std::string s3;
  if ( pos == std::string::npos ) {
    s3 = s1;
    s1.clear();
  }
  else {
    s3 = s1.substr(0, pos); 
    s1.erase(0, pos+s2.size());
  }
  return s3;
} 
 
 
// chomp them off the end
std::string chomp(std::string& s1, const std::string& s2)
{
  std::string::size_type pos = s1.find(s2);
  std::string s3;
  if ( pos == std::string::npos ) {
    s3 = s1;
    s1.clear();
  }
  else {
    s3 = s1.substr(pos+s2.size(),s1.size());
    s1.erase(pos,s1.size()); 
  } 
  return s3;
} 
 
 
 
// chop tokens off the end of a string, leave string unchanged
// return choped string
std::string choptoken(std::string& s1, const std::string& s2)
{
  std::string s3 = "";
  std::string::size_type pos = s1.find(s2);
  if ( pos != std::string::npos ) {
    s3 = s1.substr(0, pos+s2.size()); 
    s1.erase(0, pos+s2.size());
  }
  return s3;
} 
 
 
// chop tokens off the end of a string, leave string unchanged
// return choped string
std::string chomptoken(std::string& s1, const std::string& s2)
{
  std::string s3 = "";
  std::string::size_type pos = s1.find(s2);
  if ( pos != std::string::npos ) {
    s3 = s1.substr(pos, s1.size());
    s1.erase(pos, s1.size()); 
  }
  return s3;
} 
 
 
// chop tokens off the front of a string
std::string chopfirst(std::string& s1, const std::string& s2)
{
  std::string s3;
  std::string::size_type pos = s1.find_first_not_of(s2);
  if ( pos != std::string::npos ) {
    s3 = s1.substr(0, pos); 
    s1.erase(0, pos);
  }
  else {
    s3 = s1;
    s1.clear();
  } 
  return s3;
} 
 
 
std::string choplast(std::string& s1, const std::string& s2)
{
  std::string s3 = "";
  std::string::size_type pos = s1.find_last_not_of(s2);
  if ( pos != std::string::npos ) {
    s3 = s1.substr(pos+1, s1.size());
    s1.erase(pos+1, s1.size());
  }
  return s3;
} 
 
 
 
// chop tokens off the front and end of a string
std::string chopends(std::string& s1, const std::string& s2)
{
  chopfirst(s1, s2);
  choplast(s1, s2);
  return s1;
} 
 
 
 
// remove strings from a string
void removespace(std::string& s, const std::string& s2) 
{
  std::string::size_type pos;
  while ( (pos = s.find(s2))!=std::string::npos ) {
    s.erase(pos, s2.size());
  }
} 
 
 
// replace from a string
std::string replace( std::string s, const std::string& s2, const std::string& s3) {
  std::string::size_type pos;
  //  while ( (pos = s.find(" "))!=std::string::npos ) {
  //    s.replace(pos, 1, "-");
  while ( (pos = s.find(s2))!=std::string::npos ) {
    s.replace(pos, s2.size(), s3);
    if ( contains(s3,s2) ) break;
  }
  return s;
} 
 
 
// remove regx from a string
void depunctuate(std::string& s, const std::string& regex=":") 
{
  std::string::size_type pos;
  while ( (pos = s.find(regex))!=std::string::npos ) {
    s.erase(pos, regex.size());
  }
} 
  
 
 
std::vector<std::string> maphist( const std::vector<std::string>& v ) {   
  mapped.clear();
  for ( unsigned i=0 ; i<v.size() ; i++ ) { 
    if ( contains( v[i], "Expert" ) ){ 
      std::string tmp = v[i];
      std::string path = chop( tmp, "Expert/" );
      path += "Chains/";
      tmp = replace( tmp, "/", "__" );
      path += tmp;
      mapped.push_back( std::move(path) );
    }
    else { 
      mapped.push_back( v[i] );
    }
  }
 
  return mapped;
}
 
 
 
 

bool match( std::string s1, std::string s2 ) { 
  
  int i1 = std::count( s1.begin(), s1.end(), '/' );
  int i2 = std::count( s2.begin(), s2.end(), '/' );
 
  int i = ( i1<i2 ? i1 : i2 ); 
 
  //  std::cerr << "match s1 " << s1 << " " << s2 << std::endl;
 
  for ( i++ ; i-- ; ) { 
    size_t p1 = s1.find('/');
    size_t p2 = s2.find('/');
 
    std::string ss1 = s1.substr( 0, p1 );
    std::string ss2 = s2.substr( 0, p2 );
    
    s1.erase( 0, p1+1 );
    s2.erase( 0, p2+1 );
 
    //    std::cerr << i << "\tmatch :" << ss1 << ":" << ss2 << "::\t " << s1 << ":" << s2 << "\tresult " << (ss1!=ss2 ) << std::endl;
    
    if ( ss1!=ss2 ) return false;
 
  } 
  
  return true;
 
}
 

 
bool matchdir( const std::string& s ) { 
  bool matched = false;
  // int idepth = count( s, "/" );
  std::map<std::string,int>::const_iterator itr = dirs.begin();
  while ( itr!=dirs.end() ) { 
    if ( match( s, itr->first) ) matched = true;
    //    std::cerr << "\tmatchdir :" << s << "::" << itr->first << ": " << itr->second << std::endl;
    if ( matched ) return true;
    ++itr;
  }
  return false;
}
 
bool matchcwd( const std::string& s ) { 
  if ( dirs.size()==0 ) return true; 
  std::map<std::string,int>::const_iterator itr = dirs.begin();
  while ( itr!=dirs.end() ) { 
    if ( s.find(itr->first)!=std::string::npos ) return true;
    ++itr;
  }
  return false;
}
 
 
 
std::string matchcwdstr( const std::string& s ) { 
  if ( dirs.size()==0 ) return ""; 
  std::map<std::string,int>::const_iterator itr = dirs.begin();
  while ( itr!=dirs.end() ) { 
    if ( s.find(itr->first)!=std::string::npos ) return itr->first;
    ++itr;
  }
  return "";
}
 
 
std::map<std::string,int>::const_iterator matchcwditr( const std::string& s ) { 
  if ( dirs.size()==0 ) return dirs.end(); 
  std::map<std::string,int>::const_iterator itr = dirs.begin();
  while ( itr!=dirs.end() ) { 
    if ( s.find(itr->first)!=std::string::npos ) return itr;
    ++itr;
  }
  return dirs.end();
}
 
 
 
class reference { 
 
public:
 
  reference( const std::string& n, const std::string& f ) : 
    m_name(n), m_file(f) { 
    
 
    std::cerr << "opening file " << f << std::endl; 
 
    TFile* r = TFile::Open(f.c_str());
    if ( r==0 ) { 
      std::cerr << "cannot open root file " << f << std::endl;
      std::exit(-1);
    }
    
    r->cd();
 
    TList* tl  = gDirectory->GetListOfKeys();
    
    
    for ( int i=0 ; i<tl->GetSize() ; i++ ) { 
      
      TKey* tobj = (TKey*)tl->At(i);
      
      if ( std::string(tobj->GetClassName()).find("TDirectory")!=std::string::npos ) { 
      //      (*outp) << ns << "Directory " << tobj->GetName() << std::endl;
      
    TDirectory* tnd = (TDirectory*)tobj->ReadObj();
    
    std::string dir = tnd->GetName();
 
    if ( contains( dir, "run_" ) ) {
      dir.erase( 0, std::string( "run_").size() ); 
      m_run = std::atoi( dir.c_str() );
      
      break;
    }
       
      }
    }
 
    r->Close();
  } 
 
 
  reference( const reference& r ) : m_name(r.m_name), m_file(r.m_file), m_run(r.m_run) { } 
 
  
  const std::string& name() const { return m_name; }
  const std::string& file() const { return m_file; }
 
  int run() const { return m_run; }
 
private:
 
  std::string m_name;
  std::string m_file;
 
  int         m_run{};
 
};
 
 
 
std::ostream& operator<<( std::ostream& s, const reference& r ) { 
  static bool first = true;
  if ( first ) { 
    s << "##########################\n";
    s << "# References\n";
    s << "##########################\n\n";
    first = false;
  }
  s << "reference "      << r.name() << " {\n";
  s << "\t\tfile = "     << r.file() << "\n";
  s << "\t\tpath = run_" << r.run()  << "\n";
  s << "\t\tname = same_name"        << "\n";
  s << "}\n\n";
  return s;
}
 
 
 
std::vector<reference> references;
 
 
 
class header { 
 
public:
 
  header( ) { 
 
    std::string user = std::getenv("USER");
 
    (*outp) << "######################################################################\n";
    (*outp) << "# $Id: collisions_run.config " << date() << " " << user << " $\n";
    (*outp) << "######################################################################\n";
    
    (*outp) << "\n";
    (*outp) << "#######################\n";
    (*outp) << "# HLTidtrk\n";
    (*outp) << "#######################\n";
 
    (*outp) << "\n\n";
  }
 
};
 

 
class menu { 
 
public: 
  
  menu( node& n ) { 
 
    (*outp) << "\n\n";
    (*outp) << "#######################\n";
    (*outp) << "# Output\n";
    (*outp) << "#######################\n\n\n";
 
    makemenu( n ); 
 
  }
 
 
  void makemenu( node& n, const std::string& space="", std::string path="", std::string rawpath="", bool found=false ) {
    
    bool print = false;
    
    if ( n.name()==base ) found = true;
 
    if ( n.type()==node::DIRECTORY ) print = found;
    if ( n.name()=="top_level" )     print = true;
    
    if ( n.size() ) { 
      
 
      //      bool exclude_dir = false;
 
      if ( exclude.find(n.name())!=exclude.end() )  { 
    print = false;
    //  exclude_dir = true;
    return;
      }
 
      //      if ( found && ( dirs.size() && dirs.find(n.name())==dirs.end() ) ) print = false;
   
      std::string newspacer = space;
      
      if ( print ) newspacer += spacer;
      
      std::string output_name = find(n.name());
      
      
      if ( print && n.type()==node::DIRECTORY ) { 
    if ( path=="" ) path += output_name;
    else            path += "/" + output_name;
    if ( rawpath=="" ) rawpath += n.name();
    else               rawpath += "/" + n.name();
      }
 
      //      std::cerr << "path " << path << "\tmatchdir " << matchdir( path ) << std::endl;
 
      if ( found && ( dirs.size() && (!matchdir( path ) && !matchdir( rawpath ) ) ) ) return;
 
      if ( print ) (*outp) << space << "output " << output_name << " {" << "\n"; // " \t\t(" << path << " size " << n.size() << ")\n";
 
      for ( unsigned i=0 ; i<n.size() ; i++ ) { 
    if ( n[i]->type()!=node::HISTOGRAM ) makemenu( *n[i], newspacer, path, rawpath, found ) ;
      }
 
      if ( print ) (*outp) << space << "}\n";
    }    
    
  }
 
};
 
 
 

 
class ass { 
 
public: 
  
  ass( node& n, bool ah=true ) : m_allhists(ah) { 
    (*outp) << "\n\n";
    (*outp) << "#######################\n";
    (*outp) << "# Histogram Assessments\n";
    (*outp) << "#######################\n\n";
    makeass( n ); 
  }
 
 
  void makeass( node& n, const std::string& space="", std::string path="", std::string rawpath="", bool found=false ) {
    
    static std::string savedir = "";
 
    bool print = false;
    
    if ( n.name()==base ) found = true;
 
    if ( n.type()==node::DIRECTORY ) print = found;
    
    if ( n.size() ) { 
      
      
      std::string newspacer = space;
      
      if ( exclude.find(n.name())!=exclude.end() )  { 
    print = false;
    return;
      }
 
      //     if ( found && dirs.size() && dirs.find(n.name())==dirs.end() ) print = false;
 
      if ( print ) newspacer += spacer;
      
      std::string output_name = find(n.name());
            
      if ( print && n.type()==node::DIRECTORY ) { 
    if ( path=="" ) path += output_name;
    else            path += "/" + output_name;
    if ( rawpath=="" ) rawpath += n.name();
    else               rawpath += "/" + n.name();
      }
 
      if ( found && ( dirs.size() &&  !matchdir( path ) && !matchdir( rawpath ) ) ) return;
 
      if ( print ) (*outp) << space << "dir " << n.name() << " {" << "\n"; // " \t\t(" << path << ")\n";
 
      bool first_hists = true;
 
      for ( unsigned i=0 ; i<n.size() ; i++ ) { 
    if       ( n[i]->type()!=node::HISTOGRAM ) makeass( *n[i], newspacer, path, rawpath, found ) ;
    else if  ( n[i]->type()==node::HISTOGRAM ) { 
      if ( !m_allhists ) { 
        if ( first_hists ) {
          (*outp) << space << "\t"   << "hist .* {\n";
          (*outp) << space << "\t\t" << "regex       \t= 1\n";
          (*outp) << space << "\t\t" << "algorithm   \t= " << algorithm << "\n";
          (*outp) << space << "\t\t" << "description \t= " << description << "\n";
          (*outp) << space << "\t\t" << "output      \t= " << path << "\n";
          (*outp) << space << "\t\t" << "display     \t= StatBox\n";
          for ( unsigned it=0 ; it<tags.size() ; it++ ) (*outp) << space << "\t\t" << replace(tags[it],"=","\t=") << "\n";
          (*outp) << space << "\t"   << "}\n";
        }
        first_hists = false;
      }
      else { 
        (*outp) << space << "\t"   << "hist " << n[i]->name() << " {\n";
        (*outp) << space << "\t\t" << "algorithm   \t= " << algorithm << "\n";
        (*outp) << space << "\t\t" << "description \t= " << description << "\n";
        (*outp) << space << "\t\t" << "output      \t= " << path << "\n";
        (*outp) << space << "\t\t" << "display     \t= StatBox\n";
        for ( unsigned it=0 ; it<tags.size() ; it++ ) (*outp) << space << "\t\t" << replace(tags[it],"=","\t=") << "\n";
        (*outp) << space << "\t"   << "}\n";
 
        //      TH1* ase = (TH1*)(n[i]->object());
        //      if ( ase ) std::cerr << space << "\t\t" << "entries     = " << ase->GetEntries() << "\n";
        //      if ( ase ) std::cerr << space << "\t\t" << "entries     = \"" << ase->GetTitle()   << "\"\n";
 
      }
    }
      }
      
      if ( print ) (*outp) << space << "}\n"; 
    }    
    
  }
  
private:
 
  bool m_allhists;
 
};
 
 
 
 
 
 
bool found_dir = false;
 
std::string currentfile = "";
 

 
void search( TDirectory* td, const std::string& s, std::string cwd, node* n ) { 

  if ( td==0 ) return;
 
  if ( std::string(td->GetName()).find("_LB")!=std::string::npos ) return;
  if ( std::string(td->GetName()).find("lb_")!=std::string::npos ) return;
 
  //  std::cout << "search() in  " << s << td->GetName() << ":    :" << cwd << ":" << std::endl;
 
  static int ir = 0;
 
  ir++;

 
  if ( ir>10 ) { 
    std::cerr << "search() WARNING too many levels of directories (max 10) !!!\n";
    return;
  }
 
 
  TDirectory* here = gDirectory;
 
  //  gDirectory->pwd();
 
  td->cd();
  
  if ( cwd!="" ) cwd += "/";
  cwd += td->GetName();
 
  node* np = n;
 
  std::string fulldir = td->GetName();
 
 
  bool first_found = false;
  if ( !found_dir && matchcwd( cwd ) ) {
 
    std::string ase = matchcwdstr( cwd );
 
    if ( (cwd+"/").find( ase+"/" )!=std::string::npos ) { 
    
      found_dir   = true;
      first_found = true;
      
      std::cerr << "matched dirs " << cwd << " " << matchdir( cwd ) << std::endl;
      
      
      std::map<std::string,int>::const_iterator fitr = matchcwditr( cwd );
      
      if ( fitr!=dirs.end() ) { 
    
    if ( fitr->second>0 ) { 
      
      std::vector<std::string> subpath;
      
      std::string sp = fitr->first; 
      
      while( sp.size() ) subpath.push_back( chop(sp,"/") ); 
      
      for ( unsigned ip=0 ; ip<subpath.size()-1 ; ip++ ) { 
        //      std::cerr << "subpath " << ip << " " << subpath[ip] << std::endl;
        
        node* np_ = addnode( np, subpath[ip] );
        
        np = np_;
        
      }
    }
      }
      
    }
  }
  
 
  if ( found_dir ) { 
    node* np_ = addnode( np, fulldir, td );
    np = np_;
  }
 
  if ( found_dir && verbose ) std::cerr << s << cwd << std::endl;
 
 
  TList* tl  = gDirectory->GetListOfKeys();
  
  //  struct timeval tv = simpletimer_start();
  
  //  (*outp) << "\ttl " << tl << std::endl;
  
 
  for ( int i=0 ; i<tl->GetSize() ; i++ ) { 
    
    TKey* tobj = (TKey*)tl->At(i);
    
    if ( tobj==0 ) continue;
    
    //    (*outp) << "tobj " << tobj;
    //    if ( tobj ) (*outp) << " : \t" << tobj->GetName();
    //    (*outp) << std::endl; 
    
    if ( std::string(tobj->GetClassName()).find("TDirectory")!=std::string::npos ) { 
      //      (*outp) << ns << "Directory " << tobj->GetName() << std::endl;
      
      TDirectory* tnd = (TDirectory*)tobj->ReadObj();
      

      if ( tnd )  search( tnd, s+spacer, cwd, np );
    
    }
    else { 

 
      if ( found_dir ) { 
    if ( std::string(tobj->GetClassName()).find("TH1")!=std::string::npos ||
         std::string(tobj->GetClassName()).find("TH2")!=std::string::npos ||
         std::string(tobj->GetClassName()).find("TProfile")!=std::string::npos ) {
      
      //      TH1* th = (TH1*)tobj->ReadObj();
 
      //      node* h = addnode( np, "", get<TObject>(tobj), node::HISTOGRAM );
      // node* h = 
      addnode( np, tobj->GetName(), get<TObject>(tobj), node::HISTOGRAM );
      

      std::string subdir = cwd;
      chop( subdir, currentfile+"/" );

      savedhistos.push_back( subdir+"/"+tobj->GetName() );

      if ( std::string(tobj->GetName())=="Chain" ) { 
        double N = static_cast<TH1*>(get<TObject>(tobj))->GetEntries();
 
        //      std::cout << "entries " << np->name() << " " << " " << np->parent()->name() << " " << N << std::endl;
        //    std::cout << "\tentries " << np->parent()->name() << "/" << np->name() << "\t" << N << std::endl;
        std::cout << "\t" << subdir << "\t" << N << std::endl;
 
        node* p  = np->parent();
        if ( p && p->name()!="Shifter" ) { 
 
          p->addrate( p->name(), N );
 
          node* p2 = p->parent();
          if ( p2 ) p2->addrate( p->name(), N ); 
        }
      }
 
    }
    
    //      if ( !status ) std::cerr << "bad status" << std::endl;
      }
    }
    
  }
  
 
  //  double _t = simpletimer_stop(tv);
  
  //  double global_time = simpletimer_stop(global_timer);
    
  ir--;
    
  here->cd();
  
  if ( first_found ) found_dir = false;
 
}
 
 
 
 
 
 
 
 
 
 
int cost( std::vector<std::string>& files, node& n, const std::string& directory="", bool deleteref=false, bool relocate=false  ) { 
 
  std::cerr << "processing ..." << std::endl;
 
  //  std::cerr << "opening root files" << std::endl;
 
  fptr.resize(files.size());
 
 
  for ( unsigned i=0 ; i<files.size() ; i++ ) { 
 
    currentfile = files[i];
 
    std::cerr << "opening " << currentfile << std::endl;
 
    if ( !contains( files[i], "root://eosatlas") && !file_exists( files[i] ) ){ 
      std::cerr << "file " << files[i] << " does not exist" << std::endl;
      return -1;    
    }
    
    fptr[i] = TFile::Open( files[i].c_str() );
    
    if ( fptr[i]==0 || fptr[i]->IsZombie() ) { 
      std::cerr << "file " << files[i] << " cannot be opened" << std::endl;
      return -1;
    }
  
    fptr[i]->cd();
 
    if ( directory!="" ) fptr[i]->cd(directory.c_str());    
 
    TDirectory* here = gDirectory;
    
    //    global_timer = simpletimer_start();
 
    //    int tcount = 0;

 
    search( gDirectory, "", "", &n );
 
    here->cd();
    

    if ( deleteref || relocate ) { 
 
      std::cerr << "remapping" << std::endl;
 
      if ( relocate ) mapped = maphist( savedhistos );
      
      if ( relocate && !deleteref ) std::cerr << "saving histograms to file .newhist.root ... " << std::endl;
 
      if ( outref=="" ) outref = ".newhist.root";
      TFile* fnew = new TFile( outref.c_str(), "recreate" );
      fnew->cd();
 
      TDirectory*  base = gDirectory;
 
      if ( mapped.size() != savedhistos.size() ) mapped = savedhistos;
 
      for ( unsigned ih=0 ; ih<savedhistos.size() ; ih++ ) { 
    
    std::vector<std::string> dirs = split( mapped[ih], "/" );
 
    for ( unsigned jh=0 ; jh<dirs.size()-1 ; jh++ ) { 
      TDirectory* renedir = gDirectory->GetDirectory( dirs[jh].c_str() );
      if ( renedir==0 ) gDirectory->mkdir( dirs[jh].c_str() );
      gDirectory->cd( dirs[jh].c_str() );
    }
    
    TH1* href  = (TH1*)fptr[i]->Get( savedhistos[ih].c_str() );
    if ( href ) {
      //      std::cerr << ih << " " << savedhistos[ih] << " 0x" << href << std::endl;
      href->Write( dirs.back().c_str() );
    }
 
    base->cd();
      }
 
 
    }
 
    std::cerr << "closing files" << std::endl; 
        
    fptr[i]->Close();
 
    delete fptr[i];
 
    if ( deleteref ) { 
      if ( outref==".newhist.root" ) { 
    std::cerr << "replacing histogram file" << std::endl;
    std::string cmd = std::string("mv ") + files[i] + " " + files[i] + ".bak";
    std::system( cmd.c_str() );
    cmd = std::string("mv .newhist.root ") + files[i];
    std::system( cmd.c_str() );
      }
    }
    
  }
 
  return 0;
}
 
 
 
 
 
int usage(std::ostream& s, int , char** argv, int status=-1) { 
  s << "Usage: " << argv[0] << " [OPTIONS] input1.root ... inputN.root\n\n";
  s << "    -o             FILENAME  \tname of output (filename required)\n";
  s << "    -b,   --base   DIR       \tuse directory DIR as the base for the han config\n";
  s << "    -d,   --dir    DIR       \tonly directories below DIR where DIR is a structure such as HLT/TRIDT etc\n";
  s << "    -x,            DIR       \texclude directory DIR\n";
  s << "    -r             SRC DST   \tremap directory SRC to directory DST\n"; 
  s << "    -ds,  --desc   DESCRIP   \tuse DESCRIP as the description\n"; 
  s << "    -t,   --tag    VALUE     \tadd the VALUE to the list of command per histogram\n";
  s << "    -a,   --algorithm VALUE  \tuse VALUE as the execution algorithm for each histogram\n";
  s << "    -wc,  --wildcard         \tprint use hist * rather than a separate entry for each histogram\n";
  s << "    -dr,  --deleteref        \tdelete unselected histograms\n";
  s << "    -or,  --outref FILENAME  \tdelete file to write reduced output to (overwrites input otherwise) \n";
  s << "    -rh,  --relocate         \trelocate selected histograms\n";
  s << "    -ref, --reference TAG FILE \tadd FILE as a reference file with tag TAG\n";
  s << "    -rc,  --refconf       FILE \tadd FILE to the config as a reference block\n";
  s << "    -v,   --verbose          \tprint verbose output\n";
  s << "    -h,   --help             \tdisplay this help\n";
  s << std::endl;
  return status;
}
 
 
std::vector<std::string> refblock;
 
void referenceblock( const std::string& file ) { 
  std::ifstream strm(file.c_str());
  for ( std::string line ; getline( strm, line ); ) refblock.push_back( line );
} 
 
 
int main(int argc, char** argv) { 
 
  //  std::string cock = "HLT_j150_bperf_split/InDetTrigTrackingxAODCnv_BjetPrmVtx_FTF_SuperRoi/Chain"; 
 
  //  replace 
 
  //  std::cout << replace 
 
  gStyle->SetPadRightMargin(0.05);
  gStyle->SetPadTopMargin(0.075);
 
  //  TCanvas* tg = new TCanvas("tg", "tg", 650, 900 );
  TCanvas* tg = new TCanvas("tg", "tg", 700, 600 );
  tg->cd();
 
  gStyle->SetStatY(0.4);                
  // Set y-position (fraction of pad size)
  gStyle->SetStatX(0.89);                
  // Set x-position (fraction of pad size)
  gStyle->SetStatW(0.25);                
  // Set width of stat-box (fraction of pad size)
  gStyle->SetStatH(0.16);      
 
 
  //  if ( argc<3 ) usage( std::cerr << "not enough command options", argc, argv );
  if ( argc<2 ) 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( *outp, argc, argv, 0 ); 
  }
  
  std::string dir = "";
 
  std::vector<std::string> subdirs;
 
 
  bool deleteref = false;
  bool relocate  = false;
 
  std::string outfile = "";
 
  int offset = 1;
 
 
  for ( int i=1 ; i<argc ; i++ ) { 
    if      ( std::string(argv[i])=="-v" || std::string(argv[i])=="--verbose" ) verbose = true;
    else if ( std::string(argv[i])=="-o" ) {
      ++i;
      if ( i<argc-offset ) outfile = argv[i];
      else  return usage( std::cerr, argc, argv );
    } 
    else if ( std::string(argv[i])=="-or" || std::string(argv[i])=="--outrefr" ) {
      ++i;
      if ( i<argc-offset ) outref = argv[i];
      else  return usage( std::cerr, argc, argv );
    } 
    else if ( std::string(argv[i])=="-ref" || std::string(argv[i])=="--reference" ) {
      std::string reftag;
      std::string reffile;
      ++i;
      if ( i<argc-offset ) reftag = argv[i];
      else  return usage( std::cerr, argc, argv );
      ++i;
      if ( i<argc-offset ) reffile = argv[i];
      else  return usage( std::cerr, argc, argv );
      references.push_back( reference( reftag, reffile ) ); 
      //      std::cerr << references.back() << std::endl;
    } 
    else if ( std::string(argv[i])=="-rc" || std::string(argv[i])=="-refconf" ) {
      ++i;
      if ( i<argc-offset ) referenceblock( argv[i] );
      else  return usage( std::cerr, argc, argv );
    } 
    else if ( std::string(argv[i])=="-dr"  || std::string(argv[i])=="--deleteref" ) deleteref = true;
    else if ( std::string(argv[i])=="-rh"  || std::string(argv[i])=="--relocate" )  relocate  = true;
    else if ( std::string(argv[i])=="-wc"  || std::string(argv[i])=="--wildcard"  )  allhists = false;
    else if ( std::string(argv[i])=="-d"   || std::string(argv[i])=="--dir"       ) {
      ++i;
      
      if ( i<argc-offset ) { 
    std::string stringdir(argv[i]);
      dirs.insert( std::map<std::string,int>::value_type( stringdir, std::count( stringdir.begin(), stringdir.end(), '/' ) ) );
      
      std::string tdir = argv[i];
      
      //      std::cerr << "dirs " << argv[i] << std::endl;
      
      do { 
        subdirs.push_back( chop( tdir, "/" ) );
        //   std::cerr << "chop  " << subdirs.back() << std::endl;
      }
      while ( tdir.size() ); 
      }
      else  return usage( std::cerr, argc, argv );
    } 
    else if ( std::string(argv[i])=="-x" ) {
      ++i;
      if ( i<argc-offset ) exclude.insert( argv[i] );
      else  return usage( std::cerr, argc, argv );
    } 
    else if ( std::string(argv[i])=="-ds" || std::string(argv[i]).find("--desc")==0 ) {
      ++i;
      if ( i<argc-offset ) description = argv[i];
      else  return usage( std::cerr, argc, argv );
    } 
    else if ( std::string(argv[i])=="-b" || std::string(argv[i])=="--base" ) {
      ++i;
      if ( i<argc-offset ) base = argv[i] ;
      else  return usage( std::cerr, argc, argv );
    } 
    else if ( std::string(argv[i])=="-a" || std::string(argv[i])=="--algorithm" ) {
      ++i;
      if ( i<argc-offset ) algorithm = argv[i] ;
      else  return usage( std::cerr, argc, argv );
    } 
    //    else if ( std::string(argv[i])=="-o" ) { 
    //    ++i;
    //    if ( i<argc ) output_file = argv[i];
    //   else  return usage( std::cerr, argc, argv );
    //   }
    else if ( std::string(argv[i])=="-t" || std::string(argv[i])=="--tag" ) {
      ++i;
      if ( i<argc-offset ) tags.push_back( argv[i] );
      else  return usage( std::cerr, argc, argv );
    } 
    else if ( std::string(argv[i])=="-r" ) { 
      std::string src;
      std::string dest;
      if ( i<argc+2-offset ) { 
    src  = argv[++i];
    dest = argv[++i];
    remap.insert( std::map<std::string,std::string>::value_type( src, dest ) );
      } else return usage( std::cerr, argc, argv );
    }
    else { 
      offset = 0;
      files.push_back(argv[i]);
    }
  }
 
 
  if ( base == "" ) base = std::move(dir);
 
  
 
  if ( files.size()<1 ) return usage( std::cerr, argc, argv );
  
 
  //  time the actual running of the cost() routine
  
  if ( verbose ) std::cerr << "timing" << std::endl;
 
  struct timeval tv = simpletimer_start();

 
  node n(0, "" );
  n.name( "top_level" );
 
  int status = cost( files, n, "", deleteref, relocate );
 
  //  std::cerr << "\n\nnodes " << n << std::endl;
 
  if ( status ) return status;
 
  if ( outfile!="" ) outp = new std::ofstream(outfile.c_str()); 
 
  header h;
 
  for ( unsigned ir=0 ; ir<references.size() ; ir++ ) (*outp) << references[ir] << std::endl; 
 
  if ( refblock.size() ) (*outp) << refblock << std::endl;

  menu m( n );

  ass( n, allhists );

  (*outp) << std::endl;
 
  double t = simpletimer_stop(tv);
  
  if ( t>1000 ) std::cerr << "total time " << t*0.001 << " s"  << std::endl;
  else          std::cerr << "total time " << t       << " ms" << std::endl;
 
  return 0;
}