Method AddFieldName

IO/Geometry/vtkOpenFOAMReader.cxx:5605–5694

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void vtkOpenFOAMReaderPrivate::AddFieldName(
  const std::string& fieldName, const std::string& fieldType, bool isLagrangian)
{
  if (fieldName.empty() || fieldType.empty())
  {
    return;
  }

  size_t len = fieldType.find("Field");
  bool isInternalField = false;

  if (len == std::string::npos)
  {
    return;
  }
  else if ((len + 5) == fieldType.size())
  {
    // OK: ends_with("Field")
  }
  else if (fieldType.compare(len, std::string::npos, "Field::Internal") == 0)
  {
    // OK: ends_with("Field::Internal")
    // but only valid for volScalarField::Internal, etc

    isInternalField = true;
    if (isLagrangian || (fieldType.compare(0, 3, "vol") != 0))
    {
      return;
    }
  }
  else
  {
    // Some other (unknown) type - ignore
    return;
  }

  if (isLagrangian)
  {
    // Lagrangian (point) fields: labelField, scalarField, vectorField, ...

    const auto fieldDataType(vtkFoamTypes::FieldToEnum(fieldType));
    if (fieldDataType != vtkFoamTypes::NO_TYPE)
    {
      // NB: Cloud has labelField too
      this->LagrangianFieldFiles->InsertNextValue(fieldName);
    }
    return;
  }

  size_t prefix = 0;
  vtkStringArray* target = nullptr;
  if (fieldType.compare(0, 3, "vol") == 0) // starts_with("vol")
  {
    // Volume fields: volScalarField, volVectorField, ...
    // or Dimensioned (internal) fields: volScalarField::Internal, ...
    prefix = 3;
    len -= prefix;