logger/lexical_cast.h

   1 #ifndef __LEXICAL_CAST_H__
   2 #define __LEXICAL_CAST_H__
   3
   4 #include <string>
   5 #include <sstream>
   6
   7 namespace l7vs
   8 {
   9         class bad_lexical_cast : public std::bad_cast
  10         {
  11         public:
  12                 bad_lexical_cast() {}
  13         };
  14
  15         template <typename T>
  16         T lexical_cast(const std::string& s)
  17         {
  18                 std::stringstream ss;
  19                 T d;
  20                 ss << s.c_str();
  21                 while( !ss.eof() ){
  22                         ss >> d;
  23                         if(ss.fail()) {
  24                                 throw bad_lexical_cast();
  25                         }
  26                 }
  27                 return d;
  28         }
  29 }
  30
  31 #endif  //__LEXICAL_CAST_H__