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| Regular expressions library(C++11) | |||||||||||||||||||||||||
| Formatting library(C++20) | |||||||||||||||||||||||||
| Null-terminated sequence utilities | |||||||||||||||||||||||||
| Byte strings | |||||||||||||||||||||||||
| Multibyte strings | |||||||||||||||||||||||||
| Wide strings | |||||||||||||||||||||||||
| Primitive numeric conversions | |||||||||||||||||||||||||
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| Text encoding identifications | |||||||||||||||||||||||||
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Defined in header <locale> | ||
template< class Codecvt, | (since C++11) (deprecated in C++17) (removed in C++26) | |
std::wbuffer_convert is a wrapper over stream buffer of typestd::basic_streambuf<char> which gives it the appearance ofstd::basic_streambuf<Elem>. All I/O performed throughstd::wbuffer_convert undergoes character conversion as defined by the facetCodecvt.std::wbuffer_convert assumes ownership of the conversion facet, and cannot use a facet managed by a locale.
The standard facets suitable for use withstd::wbuffer_convert arestd::codecvt_utf8 for UTF-8/UCS-2 and UTF-8/UCS-4 conversions andstd::codecvt_utf8_utf16 for UTF-8/UTF-16 conversions.
This class template makes the implicit character conversion functionality ofstd::basic_filebuf available for anystd::basic_streambuf.
Contents |
| Type | Definition |
state_type | Codecvt::state_type |
| Member | Description |
std::streambuf*bufptr | a pointer to the underlying byte stream buffer (exposition-only member object*) |
Codecvt*cvtptr | a pointer to the allocated conversion object (exposition-only member object*) |
state_typecvtstate | the conversion state object (exposition-only member object*) |
constructs a newwbuffer_convert(public member function)[edit] | |
operator= | the copy assignment operator is deleted (public member function) |
destructs thewbuffer_convert and its conversion facet(public member function)[edit] | |
| returns or replaces the underlying narrow stream buffer (public member function)[edit] | |
| returns the current conversion state (public member function)[edit] |
| Character conversions | locale-defined multibyte (UTF-8, GB18030) | UTF-8 | UTF-16 |
|---|---|---|---|
| UTF-16 | mbrtoc16 /c16rtomb(with C11's DR488) | codecvt<char16_t,char,mbstate_t> | N/A |
| UCS-2 | c16rtomb(without C11's DR488) | codecvt_utf8<char16_t> | codecvt_utf16<char16_t> |
| UTF-32 | codecvt<char32_t,char,mbstate_t> | codecvt_utf16<char32_t> | |
| systemwchar_t: UTF-32(non-Windows) | mbsrtowcs /wcsrtombs | codecvt_utf8<wchar_t> | codecvt_utf16<wchar_t> |
(C++11)(deprecated in C++17)(removed in C++26) | performs conversions between a wide string and a byte string (class template)[edit] |
(C++11)(deprecated in C++17)(removed in C++26) | converts between UTF-8 and UCS-2/UCS-4 (class template)[edit] |
(C++11)(deprecated in C++17)(removed in C++26) | converts between UTF-8 and UTF-16 (class template)[edit] |
