Method RequestData

IO/XML/vtkXMLWriter.cxx:536–572

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//------------------------------------------------------------------------------
int vtkXMLWriter::RequestData(vtkInformation* vtkNotUsed(request),
  vtkInformationVector** vtkNotUsed(inputVector), vtkInformationVector* vtkNotUsed(outputVector))
{
  this->SetErrorCode(vtkErrorCode::NoError);

  // Make sure we have a file to write.
  if (!this->Stream && !this->FileName && !this->WriteToOutputString)
  {
    vtkErrorMacro("Writer called with no FileName set.");
    this->SetErrorCode(vtkErrorCode::NoFileNameError);
    return 0;
  }

  // We are just starting to write.  Do not call
  // UpdateProgressDiscrete because we want a 0 progress callback the
  // first time.
  this->UpdateProgress(0);

  // Initialize progress range to entire 0..1 range.
  float wholeProgressRange[2] = { 0.f, 1.f };
  this->SetProgressRange(wholeProgressRange, 0, 1);

  // Check input validity and call the real writing code.
  int result = this->WriteInternal();

  // If writing failed, delete the file.
  if (!result)
  {
    vtkErrorMacro("Ran out of disk space; deleting file: " << this->FileName);
    this->DeleteAFile();
  }

  // We have finished writing.
  this->UpdateProgressDiscrete(1);

  return result;
}

//------------------------------------------------------------------------------
int vtkXMLWriter::OpenStream()