JRename.cc

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#include <string>
#include <iostream>
#include <iomanip>
#include <vector>
 
#include "TROOT.h"
#include "TFile.h"
#include "TKey.h"
#include "TNamed.h"
#include "TString.h"
#include "TRegexp.h"
 
#include "JGizmo/JRootObjectID.hh"
#include "JGizmo/JGizmoToolkit.hh"
 
#include "Jeep/JParser.hh"
#include "Jeep/JMessage.hh"
 
 
/**
 * \file
 * Auxiliary program to rename ROOT objects.
 *
 * \author mdejong
 */
int main(int argc, char **argv)
{
  using namespace std;
  using namespace JPP;
  
  vector<JRootObjectID> inputFile;
  string                outputFile;
  pair<string, string>  rename;
  int                   debug;
 
  try {
 
    JParser<> zap("Auxiliary program to rename ROOT objects.");
 
    zap['f'] = make_field(inputFile,  "<input file>:<object name>");
    zap['o'] = make_field(outputFile, "ROOT file with object(s)")    = "rename.root";
    zap['R'] = make_field(rename,     "<target> <replacement>");
    zap['d'] = make_field(debug)      = 1;
 
    zap(argc, argv);
  }
  catch(const exception &error) {
    FATAL(error.what() << endl);
  }
 
 
  vector<TObject*> listOfObjects;
 
  for (vector<JRootObjectID>::const_iterator input = inputFile.begin(); input != inputFile.end(); ++input) {
 
    DEBUG("Input: " << *input << endl);
 
    TDirectory* dir = getDirectory(*input);
 
    if (dir == NULL) {
      ERROR("File: " << input->getFullFilename() << " not opened." << endl);
      continue;
    }
 
    const TRegexp regexp(input->getObjectName());
 
    TIter iter(dir->GetListOfKeys());
 
    for (TKey* key; (key = (TKey*) iter.Next()) != NULL; ) {
 
      const TString tag(key->GetName());
 
      DEBUG("Key: " << tag << " match = " << tag.Contains(regexp) << endl);
 
      // option match
 
      if (tag.Contains(regexp) && isTObject(key)) {
 
        TObject*  p      = key->ReadObj();
        TString   buffer = p->GetName();
 
        buffer.ReplaceAll(rename.first.c_str(), rename.second.c_str());
 
        DEBUG(p->GetName() << " -> " << buffer << endl);
 
        dynamic_cast<TNamed*>(p)->SetName(buffer);
 
        listOfObjects.push_back(p);
      }
    }
  }
 
 
  TFile out(outputFile.c_str(), "recreate");
 
  for (TObject* p: listOfObjects) {
    p->Write();
  }
    
  out.Write();
  out.Close();
}