std::wbuffer_convert
Defined in header <locale>
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template<class Codecvt, class Elem = wchar_t, |
(since C++11) (deprecated in C++17) |
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std::wbuffer_convert is a wrapper over stream buffer of type std::basic_streambuf<char> which gives it the appearance of std::basic_streambuf<Elem>. All I/O performed through std::wbuffer_convert undergoes character conversion as defined by the facet Codecvt
. std::wbuffer_convert assumes ownership of the conversion facet, and cannot use a facet managed by a locale. The standard facets suitable for use with std::wbuffer_convert are std::codecvt_utf8 for UTF-8/UCS2 and UTF-8/UCS4 conversions and std::codecvt_utf8_utf16 for UTF-8/UTF-16 conversions.
This class template makes the implicit character conversion functionality of std::basic_filebuf available for any std::basic_streambuf.
Member types
Member type | Definition |
state_type
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Codecvt::state_type
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Member functions
constructs a new wbuffer_convert (public member function) | |
operator= |
the copy assignment operator is deleted (public member function) |
destructs the wbuffer_convert and its conversion facet (public member function) | |
returns or replaces the underlying narrow stream buffer (public member function) | |
returns the current conversion state (public member function) |
See also
Character conversions |
locale-defined multibyte (UTF-8, GB18030) |
UTF-8 |
UTF-16 |
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UTF-16 | mbrtoc16 / c16rtomb(with C11's DR488) | codecvt<char16_t, char, mbstate_t> codecvt_utf8_utf16<char16_t> codecvt_utf8_utf16<char32_t> codecvt_utf8_utf16<wchar_t> |
N/A |
UCS2 | c16rtomb(without C11's DR488) | codecvt_utf8<char16_t> codecvt_utf8<wchar_t>(Windows) |
codecvt_utf16<char16_t> codecvt_utf16<wchar_t>(Windows) |
UTF-32 |
codecvt<char32_t, char, mbstate_t> |
codecvt_utf16<char32_t> | |
system wide: UTF-32(non-Windows) UCS2(Windows) |
mbsrtowcs / wcsrtombs |
No | No |
(C++11)(deprecated in C++17) |
performs conversions between a wide string and a byte string (class template) |
(C++11)(deprecated in C++17) |
converts between UTF-8 and UCS2/UCS4 (class template) |
(C++11)(deprecated in C++17) |
converts between UTF-8 and UTF-16 (class template) |