Method GetFieldNames

IO/Geometry/vtkOpenFOAMReader.cxx:5697–5771

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//------------------------------------------------------------------------------
void vtkOpenFOAMReaderPrivate::GetFieldNames(const std::string& tempPath, bool isLagrangian)
{
  // Open the directory and get num of files
#if VTK_OPENFOAM_TIME_PROFILING
  auto start = std::chrono::high_resolution_clock::now();
#endif
  vtkNew<vtkDirectory> directory;
  if (!directory->Open(tempPath.c_str()))
  {
#if VTK_OPENFOAM_TIME_PROFILING
    auto end = std::chrono::high_resolution_clock::now();
    this->RequestInformationTimeInMicroseconds +=
      std::chrono::duration_cast<std::chrono::microseconds>(end - start).count();
#endif
    // No data
    return;
  }
#if VTK_OPENFOAM_TIME_PROFILING
  auto end = std::chrono::high_resolution_clock::now();
  this->RequestInformationTimeInMicroseconds +=
    std::chrono::duration_cast<std::chrono::microseconds>(end - start).count();
#endif

  // loop over all files and locate valid fields
  const vtkIdType nFieldFiles = directory->GetNumberOfFiles();
  for (vtkIdType fileI = 0; fileI < nFieldFiles; ++fileI)
  {
    const std::string fieldFile(directory->GetFile(fileI));
    const auto len = fieldFile.length();

    if (!len || (fieldFile[len - 1] == '~') || directory->FileIsDirectory(fieldFile.c_str()))
    {
      continue;
    }
    else if (this->Parent->IgnoreRestartFiles && len > 2 && (fieldFile[len - 2] == '_') &&
      (fieldFile[len - 1] == '0'))
    {
      // Exclude "*_0" restart files
      continue;
    }
    else
    {
      // Exclude various backup extensions - cf. Foam::fileName::isBackup()

      auto sep = fieldFile.rfind('.');
      if (sep != std::string::npos)
      {
        ++sep;

        if (!fieldFile.compare(sep, std::string::npos, "bak") ||
          !fieldFile.compare(sep, std::string::npos, "BAK") ||
          !fieldFile.compare(sep, std::string::npos, "old") ||
          !fieldFile.compare(sep, std::string::npos, "save"))
        {
          continue;
        }
      }
    }