Method ReadFieldData

IO/Legacy/vtkDataReader.cxx:3350–3415

------------------------------------------------------------------------------

//------------------------------------------------------------------------------
vtkFieldData* vtkDataReader::ReadFieldData(FieldType fieldType)
{
  int i, numArrays = 0, skipField = 0;
  vtkFieldData* f;
  char name[256], type[256];
  vtkIdType numComp, numTuples;
  vtkAbstractArray* data;

  if (!(this->ReadString(name) && this->Read(&numArrays)))
  {
    const char* fname = this->CurrentFileName.c_str();
    vtkErrorMacro(<< "Cannot read field header!"
                  << " for file: " << (fname ? fname : "(Null FileName)"));
    return nullptr;
  }

  // See whether field data name (if specified)
  if ((this->FieldDataName && strcmp(name, this->FieldDataName) != 0))
  {
    skipField = 1;
  }

  f = vtkFieldData::New();
  f->AllocateArrays(numArrays);

  // Read the number of arrays specified
  for (i = 0; i < numArrays; i++)
  {
    char buffer[256];
    this->ReadString(buffer);
    if (strcmp(buffer, "NULL_ARRAY") == 0)
    {
      continue;
    }
    this->DecodeString(name, buffer);
    this->Read(&numComp);
    this->Read(&numTuples);
    this->ReadString(type);
    data = this->ReadArray(type, numTuples, numComp);
    if (data != nullptr)
    {
      if (!skipField || this->ReadAllFields)
      {
        data->SetName(name);
        this->ConvertGhostLevelsToGhostType(fieldType, data);
        f->AddArray(data);
      }
      data->Delete();
    }
    else
    {
      f->Delete();
      return nullptr;
    }
  }

  if (skipField && !this->ReadAllFields)
  {