Method CanReadFile

IO/Parallel/vtkPDataSetReader.cxx:382–426

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//------------------------------------------------------------------------------
int vtkPDataSetReader::CanReadFile(const char* filename)
{
  istream* file;
  char* block;
  char* param;
  char* value;
  int type;
  int flag = 0;

  // Start reading the meta-data pvtk file.
  file = this->OpenFile(filename);
  if (file == nullptr)
  {
    return 0;
  }

  type = this->ReadXML(file, &block, &param, &value);
  if (type == 1 && strcmp(block, "File") == 0)
  {
    // We cannot leave the XML parser in a bad state.
    // As a quick fix, read to the end of the file block.
    // A better solution would be to move statistics
    // to ivars and initialize them as needed.
    while (this->ReadXML(file, &block, &param, &value) != 5)
    {
    }
    flag = 1;
  }

  if (type == 4 && strncmp(value, "# vtk DataFile Version", 22) == 0)
  {
    // This is a vtk file.
    vtkDataSetReader* tmp = vtkDataSetReader::New();
    tmp->SetFileName(filename);
    type = tmp->ReadOutputType();
    if (type != -1)
    {
      flag = 1;
    }
    tmp->Delete();
  }

  delete file;
  return flag;
}

//------------------------------------------------------------------------------
void vtkPDataSetReader::ReadPVTKFileInformation(