std::time_get (3) - Linux Manuals

std::time_get: std::time_get

NAME

std::time_get - std::time_get

Synopsis

Defined in header <locale>
template<
class CharT,
class InputIt = std::istreambuf_iterator<CharT>
> class time_get;

Class template std::time_get encapsulates date and time parsing rules. The I/O manipulator std::get_time uses the std::time_get facet of the I/O stream's locale to convert text input to a std::tm object.
 std-time get-inheritance.svg
Inheritance diagram

Type requirements

-
InputIt must meet the requirements of LegacyInputIterator.

Specializations

Two standalone (locale-independent) full specializations and two partial specializations are provided by the standard library:

Defined in header <locale>
std::time_get<char> parses narrow string representations of date and time
std::time_get<wchar_t> parses wide string representations of date and time
std::time_get<char, InputIt> parses narrow string representations of date and time using custom input iterator
std::time_get<wchar_t, InputIt> parses wide string representations of date and time using custom input iterator

In addition, every locale object constructed in a C++ program implements its own (locale-specific) versions of these specializations.

Member types

Member type Definition
char_type CharT
iter_type InputIt

Member functions

              constructs a new time_get facet
constructor (public member function)
              destructs a time_get facet
destructor (protected member function)
              invokes do_date_order
date_order (public member function)
              invokes do_get_time
get_time (public member function)
              invokes do_get_date
get_date (public member function)
              invokes do_get_weekday
get_weekday (public member function)
              invokes do_get_monthname
get_monthname (public member function)
              invokes do_get_year
get_year (public member function)

get invokes do_get
              (public member function)
(C++11)

Member objects

                          id of the locale
static std::locale::id id (public member object)

Protected member functions

do_date_order obtains preferred ordering of day, month, and year
                  (virtual protected member function)
[virtual]

do_get_time extracts hours, minutes, and seconds from input stream
                  (virtual protected member function)
[virtual]

do_get_date extracts month, day, and year from input stream
                  (virtual protected member function)
[virtual]

do_get_weekday extracts the name of a day of the week from input stream
                  (virtual protected member function)
[virtual]

do_get_monthname extacts a month name from input stream
                  (virtual protected member function)
[virtual]

do_get_year extracts a year from input stream
                  (virtual protected member function)
[virtual]

do_get extracts date/time components from input stream, according to the specified format
                  (virtual protected member function)
[virtual] (C++11)

Inherited from std::time_base

Type Definition
dateorder date order enumeration type, defining the values no_order, dmy, mdy, ymd, and ydm

Example

// Run this code

  #include <iostream>
  #include <sstream>
  #include <string>
  #include <locale>
  #include <ctime>
  #include <iomanip>
  int main()
  {
      std::wstring input = L"2011-Februar-18 23:12:34";
      std::tm t;
      std::wistringstream ss(input);
      ss.imbue(std::locale("de_DE"));
      ss >> std::get_time(&t, L"%Y-%b-%d %H:%M:%S"); // uses std::time_get<wchar_t>
      std::cout << std::asctime(&t);
  }

Output:

  Sun Feb 18 23:12:34 2011