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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.
=========================================================================*/
#include "gdcmSorter.h"
#include "gdcmElement.h"
#include "gdcmSerieHelper.h"
#include "gdcmFile.h"
#include "gdcmReader.h"
#include <map>
#include <algorithm>
namespace gdcm
{
Sorter::Sorter()
{
SortFunc = NULL;
}
Sorter::~Sorter()
{
}
void Sorter::SetSortFunction( SortFunction f )
{
SortFunc = f;
}
namespace {
class SortFunctor
{
public:
bool operator() (File const *file1, File const *file2)
{
return (SortFunc)(file1->GetDataSet(), file2->GetDataSet());
}
Sorter::SortFunction SortFunc;
SortFunctor()
{
SortFunc = 0;
}
SortFunctor(SortFunctor const &sf)
{
SortFunc = sf.SortFunc;
}
void operator=(Sorter::SortFunction sf)
{
SortFunc = sf;
}
};
}
bool Sorter::StableSort(std::vector<std::string> const & filenames)
{
// BUG: I cannot clear Filenames since input filenames could also be the output of ourself...
// Filenames.clear();
if( filenames.empty() || !SortFunc )
{
Filenames.clear();
return true;
}
std::vector< SmartPointer<FileWithName> > filelist;
filelist.resize( filenames.size() );
std::vector< SmartPointer<FileWithName> >::iterator it2 = filelist.begin();
for( Directory::FilenamesType::const_iterator it = filenames.begin();
it != filenames.end() && it2 != filelist.end(); ++it, ++it2)
{
Reader reader;
reader.SetFileName( it->c_str() );
SmartPointer<FileWithName> &f = *it2;
if( reader.Read() )
{
f = new FileWithName( reader.GetFile() );
f->filename = *it;
}
else
{
gdcmErrorMacro( "File could not be read: " << it->c_str() );
return false;
}
}
SortFunctor sf;
sf = Sorter::SortFunc;
std::stable_sort( filelist.begin(), filelist.end(), sf);
Filenames.clear(); // cleanup any previous call
for(it2 = filelist.begin(); it2 != filelist.end(); ++it2 )
{
SmartPointer<FileWithName> const & f = *it2;
Filenames.push_back( f->filename );
}
return true;
}
bool Sorter::Sort(std::vector<std::string> const & filenames)
{
(void)filenames;
Filenames.clear();
if( filenames.empty() || !SortFunc ) return true;
std::vector< SmartPointer<FileWithName> > filelist;
filelist.resize( filenames.size() );
std::vector< SmartPointer<FileWithName> >::iterator it2 = filelist.begin();
for( Directory::FilenamesType::const_iterator it = filenames.begin();
it != filenames.end() && it2 != filelist.end(); ++it, ++it2)
{
Reader reader;
reader.SetFileName( it->c_str() );
SmartPointer<FileWithName> &f = *it2;
if( reader.Read() )
{
f = new FileWithName( reader.GetFile() );
f->filename = *it;
}
else
{
gdcmErrorMacro( "File could not be read: " << it->c_str() );
return false;
}
}
//std::sort( filelist.begin(), filelist.end(), Sorter::SortFunc);
SortFunctor sf;
sf = Sorter::SortFunc;
std::sort( filelist.begin(), filelist.end(), sf);
for(it2 = filelist.begin(); it2 != filelist.end(); ++it2 )
{
SmartPointer<FileWithName> const & f = *it2;
Filenames.push_back( f->filename );
}
return true;
}
bool Sorter::AddSelect( Tag const &tag, const char *value )
{
Selection.insert( SelectionMap::value_type(tag,value) );
return true;
}
void Sorter::Print( std::ostream &os) const
{
std::vector<std::string>::const_iterator it = Filenames.begin();
for( ; it != Filenames.end(); ++it)
{
os << *it <<std::endl;
}
}
} // end namespace gdcm
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