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vtkMultiNewickTreeReader.cxx
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vtkMultiNewickTreeReader.cxx
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/*=========================================================================
Program: Visualization Toolkit
Module: vtkMultiNewickTreeReader.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 "vtkMultiNewickTreeReader.h"
#include "vtkNew.h"
#include "vtkTree.h"
#include "vtkInformation.h"
#include "vtkInformationVector.h"
#include "vtkMutableDirectedGraph.h"
#include "vtkObjectFactory.h"
#include "vtkStreamingDemandDrivenPipeline.h"
#include "vtkStringArray.h"
#include "vtkNewickTreeReader.h"
#include "vtkMultiPieceDataSet.h"
#include "vtkSmartPointer.h"
#include <iostream>
#include <fstream>
vtkStandardNewMacro(vtkMultiNewickTreeReader);
#ifdef read
#undef read
#endif
//----------------------------------------------------------------------------
vtkMultiNewickTreeReader::vtkMultiNewickTreeReader()
{
vtkMultiPieceDataSet * output = vtkMultiPieceDataSet::New();
this->SetOutput(output);
// Releasing data for pipeline parallism.
// Filters will know it is empty.
output->ReleaseData();
output->Delete();
}
//----------------------------------------------------------------------------
vtkMultiNewickTreeReader::~vtkMultiNewickTreeReader()
{
}
//----------------------------------------------------------------------------
vtkMultiPieceDataSet * vtkMultiNewickTreeReader::GetOutput()
{
return this->GetOutput(0);
}
//----------------------------------------------------------------------------
vtkMultiPieceDataSet * vtkMultiNewickTreeReader::GetOutput(int idx)
{
return vtkMultiPieceDataSet::SafeDownCast(this->GetOutputDataObject(idx));
}
//----------------------------------------------------------------------------
void vtkMultiNewickTreeReader::SetOutput(vtkMultiPieceDataSet * output)
{
this->GetExecutive()->SetOutputData(0, output);
}
//----------------------------------------------------------------------------
// I do not think this should be here, but I do not want to remove it now.
int vtkMultiNewickTreeReader::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 vtkMultiNewickTreeReader::RequestData(
vtkInformation *,
vtkInformationVector **,
vtkInformationVector *outputVector)
{
vtkInformation *outInfo = outputVector->GetInformationObject(0);
if(outInfo->Get(vtkStreamingDemandDrivenPipeline::UPDATE_PIECE_NUMBER()) > 0)
{
return 1;
}
vtkDebugMacro(<<"Reading Multiple Newick trees ...");
if(this->GetFileName() == NULL || strcmp(this->GetFileName(), "") == 0)
{
vtkErrorMacro(<<"Input filename not set");
return 1;
}
std::ifstream ifs( this->GetFileName(), std::ifstream::in );
if(!ifs.good())
{
vtkErrorMacro(<<"Unable to open " << this->GetFileName() << " for reading");
return 1;
}
vtkMultiPieceDataSet * const output = vtkMultiPieceDataSet::SafeDownCast(
outInfo->Get(vtkDataObject::DATA_OBJECT()));
// Read the input file into a char *
int fileSize;
ifs.seekg(0, std::ios::end);
fileSize = ifs.tellg();
ifs.seekg(0, std::ios::beg);
char * buffer = new char[fileSize+1];
ifs.read(buffer, fileSize);
ifs.close();
buffer[fileSize] = '\0';
//use the separator ";" to decide how many trees are contained in the file
char * current = buffer;
unsigned int NumOfTrees = 0;
while ( *current != '\0')
{
while (*current == '\n' || *current == ' ')
{//ignore extra \n and spaces
current ++;
}
char * currentTreeStart = current; //record the starting char of the tree
unsigned int singleTreeLength = 0;
while ( *current != ';' && *current != '\0')
{
singleTreeLength++;
current++;
}
if (*current == ';') // each newick tree string ends with ";"
{
char * singleTreeBuffer = new char[singleTreeLength+1];
for (unsigned int i = 0; i < singleTreeLength; i++)
{
singleTreeBuffer[i] = * (currentTreeStart +i);
}
singleTreeBuffer[singleTreeLength] = '\0';
current ++;//skip ';'
vtkNew<vtkNewickTreeReader> treeReader;
vtkSmartPointer<vtkTree> tree = vtkSmartPointer<vtkTree>::New();
treeReader->ReadNewickTree(singleTreeBuffer, *tree);
output->SetPiece(NumOfTrees,tree);
NumOfTrees++;
delete [] singleTreeBuffer;
}
}
delete [] buffer;
return 1;
}
//----------------------------------------------------------------------------
int vtkMultiNewickTreeReader::FillOutputPortInformation(int, vtkInformation* info)
{
info->Set(vtkDataObject::DATA_TYPE_NAME(), "vtkMultiPieceDataSet");
return 1;
}
//----------------------------------------------------------------------------
void vtkMultiNewickTreeReader::PrintSelf(ostream& os, vtkIndent indent)
{
this->Superclass::PrintSelf(os,indent);
}