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/*=========================================================================
Program: Visualization Toolkit
Module: vtkTableReader.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 "vtkTableReader.h"
#include "vtkByteSwap.h"
#include "vtkCellArray.h"
#include "vtkFieldData.h"
#include "vtkInformation.h"
#include "vtkInformationVector.h"
#include "vtkObjectFactory.h"
#include "vtkStreamingDemandDrivenPipeline.h"
#include "vtkTable.h"
vtkStandardNewMacro(vtkTableReader);
#ifdef read
#undef read
#endif
//----------------------------------------------------------------------------
vtkTableReader::vtkTableReader()
{
vtkTable *output = vtkTable::New();
this->SetOutput(output);
// Releasing data for pipeline parallism.
// Filters will know it is empty.
output->ReleaseData();
output->Delete();
}
//----------------------------------------------------------------------------
vtkTableReader::~vtkTableReader()
{
}
//----------------------------------------------------------------------------
vtkTable* vtkTableReader::GetOutput()
{
return this->GetOutput(0);
}
//----------------------------------------------------------------------------
vtkTable* vtkTableReader::GetOutput(int idx)
{
return vtkTable::SafeDownCast(this->GetOutputDataObject(idx));
}
//----------------------------------------------------------------------------
void vtkTableReader::SetOutput(vtkTable *output)
{
this->GetExecutive()->SetOutputData(0, output);
}
//----------------------------------------------------------------------------
// I do not think this should be here, but I do not want to remove it now.
int vtkTableReader::RequestUpdateExtent(
vtkInformation *,
vtkInformationVector **,
vtkInformationVector *outputVector)
{
vtkInformation *outInfo = outputVector->GetInformationObject(0);
int piece, numPieces;
piece = outInfo->Get(vtkStreamingDemandDrivenPipeline::UPDATE_PIECE_NUMBER());
numPieces = outInfo->Get(vtkStreamingDemandDrivenPipeline::UPDATE_NUMBER_OF_PIECES());
// make sure piece is valid
if (piece < 0 || piece >= numPieces)
{
return 1;
}
return 1;
}
//----------------------------------------------------------------------------
int vtkTableReader::RequestData(
vtkInformation *,
vtkInformationVector **,
vtkInformationVector *outputVector)
{
vtkInformation *outInfo = outputVector->GetInformationObject(0);
// Return all data in the first piece ...
if(outInfo->Get(vtkStreamingDemandDrivenPipeline::UPDATE_PIECE_NUMBER()) > 0)
{
return 1;
}
vtkDebugMacro(<<"Reading vtk table...");
if(!this->OpenVTKFile() || !this->ReadHeader())
{
return 1;
}
// Read table-specific stuff
char line[256];
if(!this->ReadString(line))
{
vtkErrorMacro(<<"Data file ends prematurely!");
this->CloseVTKFile();
return 1;
}
if(strncmp(this->LowerCase(line),"dataset", (unsigned long)7))
{
vtkErrorMacro(<< "Unrecognized keyword: " << line);
this->CloseVTKFile();
return 1;
}
if(!this->ReadString(line))
{
vtkErrorMacro(<<"Data file ends prematurely!");
this->CloseVTKFile ();
return 1;
}
if(strncmp(this->LowerCase(line),"table", 5))
{
vtkErrorMacro(<< "Cannot read dataset type: " << line);
this->CloseVTKFile();
return 1;
}
vtkTable* const output = vtkTable::SafeDownCast(
outInfo->Get(vtkDataObject::DATA_OBJECT()));
while(true)
{
if(!this->ReadString(line))
{
break;
}
if(!strncmp(this->LowerCase(line), "field", 5))
{
vtkFieldData* const field_data = this->ReadFieldData();
output->SetFieldData(field_data);
field_data->Delete();
continue;
}
if(!strncmp(this->LowerCase(line), "row_data", 8))
{
int row_count = 0;
if(!this->Read(&row_count))
{
vtkErrorMacro(<<"Cannot read number of rows!");
this->CloseVTKFile();
return 1;
}
this->ReadRowData(output, row_count);
continue;
}
vtkErrorMacro(<< "Unrecognized keyword: " << line);
}
vtkDebugMacro(<< "Read " << output->GetNumberOfRows() <<" rows in "
<< output->GetNumberOfColumns() <<" columns.\n");
this->CloseVTKFile ();
return 1;
}
//----------------------------------------------------------------------------
int vtkTableReader::FillOutputPortInformation(int, vtkInformation* info)
{
info->Set(vtkDataObject::DATA_TYPE_NAME(), "vtkTable");
return 1;
}
//----------------------------------------------------------------------------
void vtkTableReader::PrintSelf(ostream& os, vtkIndent indent)
{
this->Superclass::PrintSelf(os,indent);
}
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