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/*=========================================================================
*
* Copyright Insight Software Consortium
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0.txt
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*=========================================================================*/
/**
* This is a fully working example of SAX-based reader for the ITK object itk::ParticleSwarmOptimizer.
* It performs the same function as ParticleSwarmOptimizerDOMReader; however, the traditional SAX
* (Simple API for XML) is used during the reading process, which is more complicated and error prone.
*
* Please see [ITK_HOME]/Testing/Data/InputXML/test.pso.xml for an example of our XML format for the PSO object.
*/
#ifndef itkParticleSwarmOptimizerSAXReader_h
#define itkParticleSwarmOptimizerSAXReader_h
#include "itkXMLFile.h"
#include "itkParticleSwarmOptimizer.h"
#include "itkArray.h"
#include <vector>
namespace itk
{
class ParticleSwarmOptimizerSAXReader : public XMLReader<ParticleSwarmOptimizer>
{
public:
/** Standard class typedefs */
typedef ParticleSwarmOptimizerSAXReader Self;
typedef XMLReader<ParticleSwarmOptimizer> Superclass;
typedef SmartPointer< Self > Pointer;
typedef SmartPointer< const Self > ConstPointer;
/** Method for creation through the object factory. */
itkNewMacro(Self);
/** Run-time type information (and related methods). */
itkTypeMacro(ParticleSwarmOptimizerSAXReader, XMLReader);
/**
* Virtual method defined in itk::XMLReaderBase.
* Check that whether the file with given name is readable.
*/
virtual int CanReadFile( const char* name ) ITK_OVERRIDE;
/**
* Virtual method defined in itk::XMLReaderBase.
* Called when a new xml tag start is encountered.
*/
virtual void StartElement( const char* name, const char** atts ) ITK_OVERRIDE;
/**
* Virtual method defined in itk::XMLReaderBase.
* Called when an xml tag end is encountered.
*/
virtual void EndElement( const char* name ) ITK_OVERRIDE;
/**
* Virtual method defined in itk::XMLReaderBase.
* Called when handling character data inside an xml tag.
*/
virtual void CharacterDataHandler( const char* inData, int inLength ) ITK_OVERRIDE;
/**
* Method for performing XML reading and output generation.
*/
virtual int ReadFile();
protected:
ParticleSwarmOptimizerSAXReader() {}
/** Process tag 'optimizer' attributes. */
void ProcessOptimizerAttributes( const char** atts, ParticleSwarmOptimizer* opt );
/** Process tag 'bound' attributes. */
void ProcessBoundAttributes( const char** atts, std::vector<double>& bound );
/** Search for and return a particular attribute from the attribute list. */
const char* GetAttribute( const char** atts, const char* key );
/** Check the current tags to see whether it matches a user input. */
bool ContextIs( const char* test ) const;
/** During the parsing process, current tags are stored in a LIFO stack. */
std::vector< const char* > m_CurrentTags;
// other temporary variables used during XML parsing
std::vector<double> m_LowerBound;
std::vector<double> m_UpperBound;
Array<double> m_ParametersConvergenceTolerance;
private:
ITK_DISALLOW_COPY_AND_ASSIGN(ParticleSwarmOptimizerSAXReader);
};
} // namespace itk
#endif // itkParticleSwarmOptimizerSAXReader_h
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