std::wbuffer_convert

 

C++

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Technical Specifications

 

Localizations library

Locales and facets
locale
use_facet	has_facet
Character classification
isspace isblank (C++11) iscntrl isupper islower isalpha	isdigit ispunct isxdigit isalnum isprint isgraph
Conversions
toupper tolower	wstring_convert (C++11) wbuffer_convert (C++11)
Facet category base classes
ctype_base codecvt_base messages_base	time_base money_base
Facet categories
ctype ctype<char> codecvt collate messages time_get time_put	num_get num_put numpunct money_get money_put moneypunct
Locale-specific facets
ctype_byname codecvt_byname messages_byname collate_byname	time_get_byname time_put_byname numpunct_byname moneypunct_byname
Code conversion facets
codecvt_utf8 (C++11) codecvt_utf16 (C++11)	codecvt_utf8_utf16 (C++11) codecvt_mode (C++11)
C locale
setlocale localeconv lconv	LC_ALLLC_COLLATELC_CTYPELC_MONETARYLC_NUMERICLC_TIME

 

std::wbuffer_convert

Member functions

wbuffer_convert::wbuffer_convert

wbuffer_convert::~wbuffer_convert

wbuffer_convert::rdbuf

wbuffer_convert::state

 

Defined in header <locale>
template<class Codecvt,          class Elem = wchar_t,          class Tr = std::char_traits<Elem> > class wbuffer_convert : public std::basic_streambuf<Elem, Tr>		(since C++11) (deprecated in C++17)

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	Codecvt::state_type

Member functions

(constructor)	constructs a new wbuffer_convert (public member function)
operator=	the copy assignment operator is deleted (public member function)
(destructor)	destructs the wbuffer_convert and its conversion facet (public member function)
rdbuf	returns or replaces the underlying narrow stream buffer (public member function)
state	returns the current conversion state (public member function)

See also

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> 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	mbrtoc32 / c32rtomb	codecvt<char32_t, char, mbstate_t> codecvt_utf8<char32_t> codecvt_utf8<wchar_t>(non-Windows)	codecvt_utf16<char32_t> codecvt_utf16<wchar_t>(non-Windows)
system wide: UTF-32(non-Windows) UCS2(Windows)	mbsrtowcs / wcsrtombs use_facet<codecvt <wchar_t, char, mbstate_t>>(locale)	No	No

wstring_convert (C++11)(deprecated in C++17)	performs conversions between a wide string and a byte string (class template)
codecvt_utf8 (C++11)(deprecated in C++17)	converts between UTF-8 and UCS2/UCS4 (class template)
codecvt_utf8_utf16 (C++11)(deprecated in C++17)	converts between UTF-8 and UTF-16 (class template)