Change TOF tag in mCBM run 2391 alignment file + macro to do it

mcbm/align_matrix_update_tag.C

+
+
+bool align_matrix_update_tag(std::string sInFile, std::string sTagOld, std::string sTagNew, std::string sOutFile)
+{
+  std::cout << "Updating tag in alignment file " << sInFile << " from " << sTagOld << " to " << sTagNew
+            << " and saving results as " << sOutFile << std::endl;
+
+  // Define the basic structure which needs to be filled with information
+  // This structure is stored in the output file and later passed to the
+  // FairRoot framework to do the (miss)alignment
+  std::map<std::string, TGeoHMatrix>* matrices = nullptr;
+
+  // read matrices from disk
+  TFile* misalignmentMatrixRootfile = new TFile(sInFile.data(), "READ");
+  if (misalignmentMatrixRootfile->IsOpen()) {
+    gDirectory->GetObject("MisalignMatrices", matrices);
+    misalignmentMatrixRootfile->Close();
+  }
+  else {
+    std::cerr << "Could not open file " << sInFile << "\n Exiting" << std::endl;
+    return false;
+  }
+  std::map<std::string, TGeoHMatrix> matricesOut = {};
+
+  for (auto entry = matrices->begin(); entry != matrices->end(); ++entry) {
+    std::cout << entry->first << std::endl;
+    std::string copy = entry->first;
+
+    bool bChangesDone = false;
+    std::size_t pos = copy.find(sTagOld);
+    while (std::string::npos != pos) {
+      bChangesDone = true;
+      copy.replace(pos, sTagOld.size(), sTagNew);
+      pos = copy.find(sTagOld, pos + sTagNew.size());
+    }
+    if (bChangesDone) {
+      std::cout << "=> " << copy << std::endl;
+    }
+
+    matricesOut[copy] = entry->second;
+  }
+
+
+  TFile* fileUpdated = new TFile(sOutFile.data(), "RECREATE");
+  if (fileUpdated->IsOpen()) {
+    gDirectory->WriteObject(&matricesOut, "MisalignMatrices");
+    fileUpdated->Close();
+  }
+  else {
+    std::cerr << "Could not open file " << sOutFile << "\n Exiting" << std::endl;
+    return false;
+  }
+
+  return true;
+}