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/*=========================================================================
Program: GDCM (Grassroots DICOM). A DICOM library
Copyright (c) 2006-2011 Mathieu Malaterre
All rights reserved.
See Copyright.txt or http://gdcm.sourceforge.net/Copyright.html 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.
=========================================================================*/
#ifndef GDCMSORTER_H
#define GDCMSORTER_H
#include "gdcmDirectory.h"
#include "gdcmTag.h"
#include <vector>
#include <string>
#include <map>
namespace gdcm
{
class DataSet;
/**
* \brief Sorter
* \details General class to do sorting using a custom function
* You simply need to provide a function of type: Sorter::SortFunction
*
* \warning implementation details. For now there is no cache mechanism. Which means
* that everytime you call Sort, all files specified as input paramater are *read*
*
* \see Scanner
*/
class GDCM_EXPORT Sorter
{
friend std::ostream& operator<<(std::ostream &_os, const Sorter &s);
public:
Sorter();
virtual ~Sorter();
/// Typically the output of Directory::GetFilenames()
virtual bool Sort(std::vector<std::string> const & filenames);
/// Return the list of filenames as sorted by the specific algorithm used.
/// Empty by default (before Sort() is called)
const std::vector<std::string> &GetFilenames() const { return Filenames; }
/// Print
void Print(std::ostream &os) const;
/// UNSUPPORTED FOR NOW
bool AddSelect( Tag const &tag, const char *value );
/// Set the sort function which compares one dataset to the other
typedef bool (*SortFunction)(DataSet const &, DataSet const &);
void SetSortFunction( SortFunction f );
virtual bool StableSort(std::vector<std::string> const & filenames);
protected:
std::vector<std::string> Filenames;
typedef std::map<Tag,std::string> SelectionMap;
std::map<Tag,std::string> Selection;
SortFunction SortFunc;
};
//-----------------------------------------------------------------------------
inline std::ostream& operator<<(std::ostream &os, const Sorter &s)
{
s.Print( os );
return os;
}
} // end namespace gdcm
#endif //GDCMSORTER_H
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