logger/lexical_cast.h

   1 #ifndef __LEXICAL_CAST_H__
   2 #define __LEXICAL_CAST_H__
   3
   4 #include <string>
   5 #include <sstream>
   6 #include <typeinfo>
   7
   8
   9 namespace l7vs
  10 {
  11         class bad_lexical_cast : public std::bad_cast
  12         {
  13         public:
  14                 bad_lexical_cast() {}
  15         };
  16
  17         template <typename T>
  18         T lexical_cast(const std::string& s)
  19         {
  20                 std::stringstream ss;
  21                 T d;
  22                 ss << s.c_str();
  23                 while( !ss.eof() ){
  24                         ss >> d;
  25                         if(ss.fail()) {
  26                                 throw bad_lexical_cast();
  27                         }
  28                 }
  29                 return d;
  30         }
  31 }
  32
  33 #endif  //__LEXICAL_CAST_H__