std::time_get
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.
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 (public member function) |
|
| destructs a time_get facet (protected member function) |
|
invokes do_date_order (public member function) |
|
invokes do_get_time (public member function) |
|
invokes do_get_date (public member function) |
|
invokes do_get_weekday (public member function) |
|
invokes do_get_monthname (public member function) |
|
invokes do_get_year (public member function) |
|
|
(C++11)
|
invokes do_get (public member function) |
Member objects
|
static std::locale::id id
|
id of the locale (public member object) |
Protected member functions
|
[virtual]
|
obtains preferred ordering of day, month, and year (virtual protected member function) |
|
[virtual]
|
extracts hours, minutes, and seconds from input stream (virtual protected member function) |
|
[virtual]
|
extracts month, day, and year from input stream (virtual protected member function) |
|
[virtual]
|
extracts the name of a day of the week from input stream (virtual protected member function) |
|
[virtual]
|
extacts a month name from input stream (virtual protected member function) |
|
[virtual]
|
extracts a year from input stream (virtual protected member function) |
|
[virtual] (C++11)
|
extracts date/time components from input stream, according to the specified format (virtual protected member function) |
Inherited from std::time_base
| Type | Definition |
|---|---|
dateorder |
date order enumeration type, defining the values no_order, dmy, mdy, ymd, and ydm |
Example
note: choose clang to observe the output. libstdc++ does not correctly implement the %b specifier: bug 78714.
#include <iostream>
#include <sstream>
#include <locale>
#include <iomanip>
int main()
{
std::tm t = {};
std::istringstream ss("2011-Februar-18 23:12:34");
ss.imbue(std::locale("de_DE.utf-8"));
ss >> std::get_time(&t, "%Y-%b-%d %H:%M:%S");
if (ss.fail()) {
std::cout << "Parse failed\n";
} else {
std::cout << std::put_time(&t, "%c") << '\n';
}
}
Possible output:
Sun Feb 18 23:12:34 2011
See also
formats contents of struct std::tm for output as character sequence (class template) |
|
|
(C++11)
|
parses a date/time value of specified format (function template) |
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