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  1. #include <iostream>
  2. #include <stdexcept>
  3. #include <cstring>
  4. #include <ctime>
  5. #include <sstream>
  6.  
  7. using std::cout;
  8. using std::endl;
  9.  
  10. std::size_t const BUF_SIZE(1000);
  11.  
  12. std::ostream& operator<<(std::ostream& os, std::tm const& rhs)
  13. {   
  14.     os << asctime(&rhs);
  15.     return os; 
  16. }   
  17.  
  18. std::istream& operator>>(std::istream& is, std::tm& rhs)
  19. {   
  20.     while (is.peek() == ' ' || is.peek() == '\t')
  21.     {   
  22.         is.get();
  23.     }   
  24.     std::streampos curPos = is.tellg();
  25.     char buf[BUF_SIZE];
  26.     is.getline(buf, BUF_SIZE);
  27.     char* ptr = strptime(buf, "%D %T", &rhs);
  28.     if (ptr == 0)
  29.     {   
  30.         throw std::runtime_error("strptime() failed!");
  31.     }   
  32.     std::size_t processed = ptr - buf;
  33.     is.seekg(curPos + static_cast<std::streampos>(processed));
  34.     return is; 
  35. }   
  36.  
  37. int main()
  38. {   
  39.     std::istringstream is("10101 07/09/12 07:30:00 123.24");
  40.     int uuid(0);
  41.     double price(0);
  42.     std::tm ptime; std::memset(&ptime, 0, sizeof(tm));
  43.  
  44.     is >> uuid >> ptime >> price;
  45.     cout << "UUID: " << uuid << endl;
  46.     cout << "Time: " << ptime;
  47.     cout << "Price: " << price << endl;
  48. }
  49.  
Success #stdin #stdout 0s 3064KB
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Standard input is empty
stdout
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UUID: 10101
Time: Mon Jul  9 07:30:00 2012
Price: 0
https://ideone.com/NXZqK
language:
C++14 (gcc 8.3)
created:
11 years ago
visibility:
public

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