eic-opticks/sysrap/SNameVec.hh

0001 #include <vector>
0002 #include <string>
0003 #include <iostream>
0004 #include <iomanip>
0005 #include <algorithm>
0006
0007 #include "SYSRAP_API_EXPORT.hh"
0008
0009 /**
0010 SNameVec<T>
0011 =============
0012
0013 Sorts a vector of T* where the T has a
0014 GetName method returning something that can be
0015 converted into std::string.
0016
0017
0018 **/
0019
0020 template <typename T>
0021 struct SYSRAP_API SNameVec
0022 {
0023     static void Dump(const std::vector<T*>& a );
0024     static void Sort(      std::vector<T*>& a, bool reverse );
0025 };
0026
0027 template <typename T>
0028 struct SYSRAP_API SNameVecOrder
0029 {
0030     SNameVecOrder(bool reverse_) : reverse(reverse_) {}
0031
0032     bool operator() (const T* a, const T* b) const
0033     {
0034         const std::string an = a->GetName() ;
0035         const std::string bn = b->GetName() ;
0036         bool cmp = an < bn ;
0037         return reverse ? !cmp : cmp ;
0038     }
0039     bool reverse ;
0040 };
0041
0042
0043 template <typename T>
0044 void SNameVec<T>::Dump( const std::vector<T*>& a  )
0045 {
0046     for(unsigned i=0 ; i < a.size() ; i++) std::cout << std::setw(10) << a[i]->GetName() << std::endl  ;
0047 }
0048
0049 template <typename T>
0050 void SNameVec<T>::Sort( std::vector<T*>& a, bool reverse)
0051 {
0052     SNameVecOrder<T> order(reverse) ;
0053     std::sort( a.begin(),  a.end(),  order );
0054 }
0055
0056