C++ (Cpp) locale Examples

Programming Language: C++ (Cpp)

Class/Type: locale

Examples at hotexamples.com: 10

Locale is a standard C++ library that provides a way to handle localized data, such as text formatting, date and time formatting, and number formatting. It allows applications to be customized to the language and regional settings of the user.

Example 1: Formatting numbers with comma separator

#include 
#include 

int main()
{
    double number = 1234567.89;
    std::cout.imbue(std::locale(""));    // set the current locale
    std::cout << std::fixed << number << std::endl;
    return 0;
}

This code demonstrates how to format a double number with the current locale. In this case, the output will be "1,234,567.89" on systems whose locale uses a comma as a decimal separator. The `imbue` function sets the current locale, and the `fixed` manipulator instructs `cout` to output the given number as a fixed-point decimal.

Package library: Standard C++ Library

Example 2: Formatting dates with month name

#include 
#include 
#include 

int main()
{
    std::chrono::system_clock::time_point tp = std::chrono::system_clock::now();
    std::time_t tt = std::chrono::system_clock::to_time_t(tp);
    std::tm tm = *std::localtime(&tt);
    std::cout.imbue(std::locale("en_US.utf8"));    // set the locale to US English
    std::cout << std::put_time(&tm, "%B %d, %Y") << std::endl;
    return 0;
}

This code demonstrates how to format the current date with the full month name, using the `put_time` function. The output will be something like "February 26, 2022" for the correct date. The `tm` structure is obtained from `localtime` function and `put_time` takes a `tm` structure and a format string as parameters. The `imbue` function sets the locale to US English. Package library: Standard C++ Library

C++ (Cpp) locale - 10 examples found. These are the top rated real world C++ (Cpp) examples of locale extracted from open source projects. You can rate examples to help us improve the quality of examples.

Frequently Used Methods

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name(8)

_M_get_facet(2)

Frequently Used Methods

name (8)

_M_get_facet (2)

Example #1

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File: _ios.c Project: yamamushi/services

locale basic_ios<_CharT, _Traits>::imbue(const locale& __loc)
{
    locale __tmp = ios_base::imbue(__loc);

    if (_M_streambuf)
        _M_streambuf->pubimbue(__loc);

    // no throwing here
    this->_M_cached_ctype = __loc._M_get_facet(ctype<char_type>::id) ;
    this->_M_cached_numpunct = __loc._M_get_facet(numpunct<char_type>::id) ;
    this->_M_cached_grouping = ((numpunct<char_type>*)_M_cached_numpunct)->grouping() ;
    return __tmp;
}

Example #2

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File: locale.cpp Project: BackupTheBerlios/wl530g-svn

locale _STLP_CALL locale::global(const locale& L) {
  locale old(_Stl_get_global_locale()->_M_impl);
  if (_Stl_get_global_locale()->_M_impl != L._M_impl) {
    _release_Locale_impl(_Stl_get_global_locale()->_M_impl);
    // this assign should be atomic, should be fixed here:
    _Stl_get_global_locale()->_M_impl = _get_Locale_impl(L._M_impl);

    // Set the global C locale, if appropriate.
#if !defined(_STLP_NO_LOCALE_SUPPORT) && !defined(_STLP_WINCE) && !defined(_STLP_WCE_NET)
    if (L.name() != _Nameless)
      setlocale(LC_ALL, L.name().c_str());
#endif
  }

  return old;
}

Example #3

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File: change_global_locale.cpp Project: sasaki-seiji/ProgrammingLanguageCPP4th

void print_locale_names(const locale& my_loc)
{
	cout << "name of current global loale: " << locale().name() << '\n';
	cout << "name of classic C locale: " << locale::classic().name() << '\n';
	cout << "name of \"user's preferred locale\": " << locale("").name() << '\n';
	cout << "name of my locale: " << my_loc.name() << '\n';
}

Example #4

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File: _ios.c Project: RenEvo/dead6

locale basic_ios<_CharT, _Traits>::imbue(const locale& __loc) {
  locale __tmp = ios_base::imbue(__loc);
  _STLP_TRY {
    if (_M_streambuf)
      _M_streambuf->pubimbue(__loc);

    // no throwing here
    this->_M_cached_ctype = __loc._M_get_facet(ctype<char_type>::id);
    this->_M_cached_numpunct = __loc._M_get_facet(numpunct<char_type>::id);
    this->_M_cached_grouping = ((numpunct<char_type>*)_M_cached_numpunct)->grouping();
  }
  _STLP_CATCH_ALL {
    __tmp = ios_base::imbue(__tmp);
    _M_handle_exception(ios_base::failbit);
  }
  return __tmp;
}

Example #5

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File: numpunct.cpp Project: sasaki-seiji/ProgrammingLanguageCPP4th

void test_numpunct(const locale& loc)
{
	cout << "-- " << loc.name() << " --\n";
	cout.imbue(loc);
	cout << 123456789 << endl;
	cout << defaultfloat << 12345678.9 << endl;
	cout << fixed << 12345678.9 << endl;
	cout << boolalpha << "true: " << true << ", false: " << false << endl;
}

Example #6

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File: locale_impl.cpp Project: RaymondLiao/elektronika

locale  _STLP_CALL
locale::global(const locale& L) 
{
  locale old;                   // A copy of the old global locale.

  L._M_impl->incr();
  {
    _STLP_auto_lock lock(_Stl_loc_global_locale_lock);
    _Stl_loc_global_impl->decr();     // We made a copy, so it can't be zero.
    _Stl_loc_global_impl = L._M_impl;
  }

                                // Set the global C locale, if appropriate.
#if !defined(_STLP_WINCE)
  if (L.name() != _Nameless)
    setlocale(LC_ALL, L.name().c_str());
#endif

  return old;
}

Example #7

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File: locale.cpp Project: ChunHungLiu/stlport

_Locale_impl* _STLP_CALL locale::global(const locale& L) {
#endif
  locale old(_Stl_get_global_locale()->_M_impl);
  if (_Stl_get_global_locale()->_M_impl != L._M_impl) {
    _release_Locale_impl(_Stl_get_global_locale()->_M_impl);
    // this assign should be atomic, should be fixed here:
    _Stl_get_global_locale()->_M_impl = _get_Locale_impl(L._M_impl);

    // Set the global C locale, if appropriate.
#if !defined(_STLP_NO_LOCALE_SUPPORT)
    if (L.name() != _Nameless)
      setlocale(LC_ALL, L.name().c_str());
#endif
  }

#if !defined (_STLP_USE_MSVC6_MEM_T_BUG_WORKAROUND)
  return old;
#else
  return old._M_impl;
#endif
}

Example #8

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File: locale.cpp Project: ChunHungLiu/stlport

// Compare two locales for equality.
bool locale::operator==(const locale& L) const {
  return this->_M_impl == L._M_impl ||
         (this->name() == L.name() && this->name() != _Nameless);
}

Example #9

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File: locale.cpp Project: ChunHungLiu/stlport

// Contruct a new locale where all facets that aren't in category c
// come from L1, and all those that are in category c come from L2.
locale::locale(const locale& L1, const locale& L2, category c)
  : _M_impl(0) {
  _Locale_impl* impl = new _Locale_impl(*L1._M_impl);

  _Locale_impl* i2 = L2._M_impl;

  if (L1.name() != _Nameless && L2.name() != _Nameless)
    _Stl_loc_combine_names(impl, L1._M_impl->name.c_str(), L2._M_impl->name.c_str(), c);
  else {
    impl->name = _Nameless;
  }

  if (c & collate) {
    impl->insert( i2, _STLP_STD::collate<char>::id);
# ifndef _STLP_NO_WCHAR_T
    impl->insert( i2, _STLP_STD::collate<wchar_t>::id);
# endif
  }
  if (c & ctype) {
    impl->insert( i2, _STLP_STD::ctype<char>::id);
    impl->insert( i2, _STLP_STD::codecvt<char, char, mbstate_t>::id);
# ifndef _STLP_NO_WCHAR_T
    impl->insert( i2, _STLP_STD::ctype<wchar_t>::id);
    impl->insert( i2, _STLP_STD::codecvt<wchar_t, char, mbstate_t>::id);
# endif
  }
  if (c & monetary) {
    impl->insert( i2, _STLP_STD::moneypunct<char, true>::id);
    impl->insert( i2, _STLP_STD::moneypunct<char, false>::id);
    impl->insert( i2, _STLP_STD::money_get<char, istreambuf_iterator<char, char_traits<char> > >::id);
    impl->insert( i2, _STLP_STD::money_put<char, ostreambuf_iterator<char, char_traits<char> > >::id);
# ifndef _STLP_NO_WCHAR_T
    impl->insert( i2, _STLP_STD::moneypunct<wchar_t, true>::id);
    impl->insert( i2, _STLP_STD::moneypunct<wchar_t, false>::id);
    impl->insert( i2, _STLP_STD::money_get<wchar_t, istreambuf_iterator<wchar_t, char_traits<wchar_t> > >::id);
    impl->insert( i2, _STLP_STD::money_put<wchar_t, ostreambuf_iterator<wchar_t, char_traits<wchar_t> > >::id);
# endif
  }
  if (c & numeric) {
    impl->insert( i2, _STLP_STD::numpunct<char>::id);
    impl->insert( i2, _STLP_STD::num_get<char, istreambuf_iterator<char, char_traits<char> > >::id);
    impl->insert( i2, _STLP_STD::num_put<char, ostreambuf_iterator<char, char_traits<char> > >::id);
# ifndef _STLP_NO_WCHAR_T
    impl->insert( i2, _STLP_STD::numpunct<wchar_t>::id);
    impl->insert( i2, _STLP_STD::num_get<wchar_t, istreambuf_iterator<wchar_t, char_traits<wchar_t> > >::id);
    impl->insert( i2, _STLP_STD::num_put<wchar_t, ostreambuf_iterator<wchar_t, char_traits<wchar_t> > >::id);
# endif
  }
  if (c & time) {
    impl->insert( i2, _STLP_STD::time_get<char, istreambuf_iterator<char, char_traits<char> > >::id);
    impl->insert( i2, _STLP_STD::time_put<char, ostreambuf_iterator<char, char_traits<char> > >::id);
# ifndef _STLP_NO_WCHAR_T
    impl->insert( i2, _STLP_STD::time_get<wchar_t, istreambuf_iterator<wchar_t, char_traits<wchar_t> > >::id);
    impl->insert( i2, _STLP_STD::time_put<wchar_t, ostreambuf_iterator<wchar_t, char_traits<wchar_t> > >::id);
# endif
  }
  if (c & messages) {
    impl->insert( i2, _STLP_STD::messages<char>::id);
# ifndef _STLP_NO_WCHAR_T
    impl->insert( i2, _STLP_STD::messages<wchar_t>::id);
# endif
  }
  _M_impl = _get_Locale_impl( impl );
}

Example #10

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File: locale_catalog.cpp Project: kuailexs/symbiandump-os2

// Contruct a new locale where all facets that aren't in category c
// come from L1, and all those that are in category c come from L2.
                _STLP_EXP_DECLSPEC locale::locale(const locale& L1, const locale& L2, category c)
                    : _M_impl(0)
                {
                    _Locale* impl = new _Locale(*L1._M_impl);

                    _Locale_impl* i2 = L2._M_impl;

#if defined(__LIBSTD_CPP_SYMBIAN32_WSD__) || defined(_STLP_LIBSTD_CPP_NO_STATIC_VAR_)
const string nameless("*");
# else
static string nameless("*");
# endif

                    if (L1.name() != nameless && L2.name() != nameless)
                        _Stl_loc_combine_names(impl,
                                               L1._M_impl->name.c_str(), L2._M_impl->name.c_str(),
                                               c);
                    else {
                        impl->name = "*";
                    }

                    if (c & collate) {
#if defined(__LIBSTD_CPP_SYMBIAN32_WSD__) || defined(_STLP_LIBSTD_CPP_NO_STATIC_VAR_)
impl->insert( i2, _STLP_STD::collate<char>::GetFacetLocaleId());
#else
impl->insert( i2, _STLP_STD::collate<char>::id);
#endif
# ifndef _STLP_NO_WCHAR_T
#if defined(__LIBSTD_CPP_SYMBIAN32_WSD__) || defined(_STLP_LIBSTD_CPP_NO_STATIC_VAR_)
impl->insert( i2, _STLP_STD::collate<wchar_t>::GetFacetLocaleId());
#else
impl->insert( i2, _STLP_STD::collate<wchar_t>::id);
#endif //__LIBSTD_CPP_SYMBIAN32_WSD__    
# endif //!_STLP_NO_WCHAR_T
}
if (c & ctype) {
#if defined(__LIBSTD_CPP_SYMBIAN32_WSD__) || defined(_STLP_LIBSTD_CPP_NO_STATIC_VAR_)
impl->insert( i2, _STLP_STD::codecvt<char, char, mbstate_t>::GetFacetLocaleId());
impl->insert( i2, _STLP_STD::ctype<char>::GetFacetLocaleId());
#else
impl->insert( i2, _STLP_STD::codecvt<char, char, mbstate_t>::id);
impl->insert( i2, _STLP_STD::ctype<char>::id);
#endif //__LIBSTD_CPP_SYMBIAN32_WSD__

# ifndef _STLP_NO_WCHAR_T
#if defined(__LIBSTD_CPP_SYMBIAN32_WSD__) || defined(_STLP_LIBSTD_CPP_NO_STATIC_VAR_)
impl->insert( i2, _STLP_STD::ctype<wchar_t>::GetFacetLocaleId());
impl->insert( i2, _STLP_STD::codecvt<wchar_t, char, mbstate_t>::GetFacetLocaleId());
#else
impl->insert( i2, _STLP_STD::ctype<wchar_t>::id);
impl->insert( i2, _STLP_STD::codecvt<wchar_t, char, mbstate_t>::id);
#endif //__LIBSTD_CPP_SYMBIAN32_WSD__   
# endif //!_STLP_NO_WCHAR_T
}
if (c & monetary) {
#if defined(__LIBSTD_CPP_SYMBIAN32_WSD__) || defined(_STLP_LIBSTD_CPP_NO_STATIC_VAR_)
impl->insert( i2, _STLP_STD::moneypunct<char, true>::GetFacetLocaleId());
impl->insert( i2, _STLP_STD::moneypunct<char, false>::GetFacetLocaleId());
impl->insert( i2, _STLP_STD::money_get<char, istreambuf_iterator<char, char_traits<char> > >::GetFacetLocaleId());
impl->insert( i2, _STLP_STD::money_put<char, ostreambuf_iterator<char, char_traits<char> > >::GetFacetLocaleId());
#else
impl->insert( i2, _STLP_STD::moneypunct<char, true>::id);
impl->insert( i2, _STLP_STD::moneypunct<char, false>::id);
impl->insert( i2, _STLP_STD::money_get<char, istreambuf_iterator<char, char_traits<char> > >::id);
impl->insert( i2, _STLP_STD::money_put<char, ostreambuf_iterator<char, char_traits<char> > >::id);
#endif //__LIBSTD_CPP_SYMBIAN32_WSD__       

# ifndef _STLP_NO_WCHAR_T
#if defined(__LIBSTD_CPP_SYMBIAN32_WSD__) || defined(_STLP_LIBSTD_CPP_NO_STATIC_VAR_)
impl->insert( i2, _STLP_STD::moneypunct<wchar_t, true>::GetFacetLocaleId());
impl->insert( i2, _STLP_STD::moneypunct<wchar_t, false>::GetFacetLocaleId());
impl->insert( i2, _STLP_STD::money_get<wchar_t, istreambuf_iterator<wchar_t, char_traits<wchar_t> > >::GetFacetLocaleId());
impl->insert( i2, _STLP_STD::money_put<wchar_t, ostreambuf_iterator<wchar_t, char_traits<wchar_t> > >::GetFacetLocaleId());
#else
impl->insert( i2, _STLP_STD::moneypunct<wchar_t, true>::id);
impl->insert( i2, _STLP_STD::moneypunct<wchar_t, false>::id);
impl->insert( i2, _STLP_STD::money_get<wchar_t, istreambuf_iterator<wchar_t, char_traits<wchar_t> > >::id);
impl->insert( i2, _STLP_STD::money_put<wchar_t, ostreambuf_iterator<wchar_t, char_traits<wchar_t> > >::id);
#endif  //__LIBSTD_CPP_SYMBIAN32_WSD__         
# endif //!_STLP_NO_WCHAR_T
}
if (c & numeric) {
#if defined(__LIBSTD_CPP_SYMBIAN32_WSD__) || defined(_STLP_LIBSTD_CPP_NO_STATIC_VAR_)
impl->insert( i2, _STLP_STD::numpunct<char>::GetFacetLocaleId());
impl->insert( i2, _STLP_STD::num_get<char, istreambuf_iterator<char, char_traits<char> > >::GetFacetLocaleId());
impl->insert( i2, _STLP_STD::num_put<char, ostreambuf_iterator<char, char_traits<char> > >::GetFacetLocaleId());
#else
impl->insert( i2, _STLP_STD::numpunct<char>::id);
impl->insert( i2, _STLP_STD::num_get<char, istreambuf_iterator<char, char_traits<char> > >::id);
impl->insert( i2, _STLP_STD::num_put<char, ostreambuf_iterator<char, char_traits<char> > >::id);
#endif

# ifndef _STLP_NO_WCHAR_T
#if defined(__LIBSTD_CPP_SYMBIAN32_WSD__) || defined(_STLP_LIBSTD_CPP_NO_STATIC_VAR_)
impl->insert(i2, _STLP_STD::numpunct<wchar_t>::GetFacetLocaleId());
impl->insert( i2, num_get<wchar_t, istreambuf_iterator<wchar_t, char_traits<wchar_t> > >::GetFacetLocaleId());
impl->insert( i2, num_put<wchar_t, ostreambuf_iterator<wchar_t, char_traits<wchar_t> > >::GetFacetLocaleId());
#else
impl->insert( i2, _STLP_STD::numpunct<wchar_t>::id);
impl->insert( i2, num_get<wchar_t, istreambuf_iterator<wchar_t, char_traits<wchar_t> > >::id);
impl->insert( i2, num_put<wchar_t, ostreambuf_iterator<wchar_t, char_traits<wchar_t> > >::id);
#endif    //__LIBSTD_CPP_SYMBIAN32_WSD__    
# endif //!_STLP_NO_WCHAR_T
}
if (c & time) {
#if defined(__LIBSTD_CPP_SYMBIAN32_WSD__) || defined(_STLP_LIBSTD_CPP_NO_STATIC_VAR_)
impl->insert( i2, _STLP_STD::time_get<char, istreambuf_iterator<char, char_traits<char> > >::GetFacetLocaleId());
impl->insert( i2, _STLP_STD::time_put<char, ostreambuf_iterator<char, char_traits<char> > >::GetFacetLocaleId());
#else
impl->insert( i2, _STLP_STD::time_get<char, istreambuf_iterator<char, char_traits<char> > >::id);
impl->insert( i2, _STLP_STD::time_put<char, ostreambuf_iterator<char, char_traits<char> > >::id);
#endif //__LIBSTD_CPP_SYMBIAN32_WSD__    
# ifndef _STLP_NO_WCHAR_T
#if defined(__LIBSTD_CPP_SYMBIAN32_WSD__) || defined(_STLP_LIBSTD_CPP_NO_STATIC_VAR_)
impl->insert( i2, _STLP_STD::time_get<wchar_t, istreambuf_iterator<wchar_t, char_traits<wchar_t> > >::GetFacetLocaleId());
impl->insert( i2, _STLP_STD::time_put<wchar_t, ostreambuf_iterator<wchar_t, char_traits<wchar_t> > >::GetFacetLocaleId());
#else
impl->insert( i2, _STLP_STD::time_get<wchar_t, istreambuf_iterator<wchar_t, char_traits<wchar_t> > >::id);
impl->insert( i2, _STLP_STD::time_put<wchar_t, ostreambuf_iterator<wchar_t, char_traits<wchar_t> > >::id);
#endif //__LIBSTD_CPP_SYMBIAN32_WSD__    
# endif //!_STLP_NO_WCHAR_T
}
if (c & messages) {
#if defined(__LIBSTD_CPP_SYMBIAN32_WSD__) || defined(_STLP_LIBSTD_CPP_NO_STATIC_VAR_)
impl->insert( i2, _STLP_STD::messages<char>::GetFacetLocaleId());
#else
impl->insert( i2, _STLP_STD::messages<char>::id);
#endif
# ifndef _STLP_NO_WCHAR_T
#if defined(__LIBSTD_CPP_SYMBIAN32_WSD__) || defined(_STLP_LIBSTD_CPP_NO_STATIC_VAR_)
impl->insert( i2, _STLP_STD::messages<wchar_t>::GetFacetLocaleId());
#else
impl->insert( i2, _STLP_STD::messages<wchar_t>::id);
#endif //__LIBSTD_CPP_SYMBIAN32_WSD__    
# endif //_STLP_NO_WCHAR_T
}
_M_impl = impl;
}