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/*=========================================================================
Program: Visualization Toolkit
Module: vtkDataObjectReader.cxx
Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
All rights reserved.
See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================*/
#include "vtkDataObjectReader.h"
#include "vtkObjectFactory.h"
#include "vtkExecutive.h"
#include "vtkInformation.h"
#include "vtkInformationVector.h"
#include "vtkFieldData.h"
#include "vtkDataObject.h"
vtkStandardNewMacro(vtkDataObjectReader);
vtkDataObjectReader::vtkDataObjectReader()
{
vtkDataObject *output = vtkDataObject::New();
this->SetOutput(output);
// Releasing data for pipeline parallism.
// Filters will know it is empty.
output->ReleaseData();
output->Delete();
}
vtkDataObjectReader::~vtkDataObjectReader()
{
}
//----------------------------------------------------------------------------
vtkDataObject *vtkDataObjectReader::GetOutput()
{
return this->GetOutput(0);
}
//----------------------------------------------------------------------------
vtkDataObject* vtkDataObjectReader::GetOutput(int port)
{
return vtkDataObject::SafeDownCast(this->GetOutputDataObject(port));
}
//----------------------------------------------------------------------------
void vtkDataObjectReader::SetOutput(vtkDataObject *output)
{
this->GetExecutive()->SetOutputData(0, output);
}
int vtkDataObjectReader::RequestData(
vtkInformation *,
vtkInformationVector **,
vtkInformationVector *outputVector)
{
vtkInformation *outInfo = outputVector->GetInformationObject(0);
vtkDataObject *output = outInfo->Get(vtkDataObject::DATA_OBJECT());
char line[256];
vtkFieldData *field=NULL;
vtkDebugMacro(<<"Reading vtk field data...");
if ( !(this->OpenVTKFile()) || !this->ReadHeader())
{
return 1;
}
// Read field data until end-of-file
//
while (this->ReadString(line) && !field )
{
if ( !strncmp(this->LowerCase(line),"field",(unsigned long)5) )
{
field = this->ReadFieldData(); //reads named field (or first found)
if ( field != NULL )
{
output->SetFieldData(field);
field->Delete();
}
}
else if ( !strncmp(this->LowerCase(line),"dataset",(unsigned long)7) )
{
vtkErrorMacro(<<"Field reader cannot read datasets");
this->CloseVTKFile();
return 1;
}
else
{
vtkErrorMacro(<< "Unrecognized keyword: " << line);
this->CloseVTKFile();
return 1;
}
}
//while field not read
this->CloseVTKFile();
return 1;
}
int vtkDataObjectReader::FillOutputPortInformation(int, vtkInformation *info)
{
info->Set(vtkDataObject::DATA_TYPE_NAME(), "vtkDataObject");
return 1;
}
void vtkDataObjectReader::PrintSelf(ostream& os, vtkIndent indent)
{
this->Superclass::PrintSelf(os,indent);
}
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