#include <locale_conv.h>

Inheritance diagram for std::wbuffer_convert< _Codecvt, _Elem, _Tr >:

Public Types
typedef _Codecvt::state_type	state_type


typedef _CharT	char_type

typedef _Traits	traits_type

typedef traits_type::int_type	int_type

typedef traits_type::pos_type	pos_type

typedef traits_type::off_type	off_type


typedef basic_streambuf< char_type, traits_type >	__streambuf_type

Public Member Functions
	wbuffer_convert ()

	wbuffer_convert (const wbuffer_convert &)=delete

	wbuffer_convert (streambuf __bytebuf, _Codecvt __pcvt=new _Codecvt, state_type __state=state_type())

locale	getloc () const

streamsize	in_avail ()

wbuffer_convert &	operator= (const wbuffer_convert &)=delete

locale	pubimbue (const locale &__loc)

streambuf *	rdbuf () const noexcept

streambuf *	rdbuf (streambuf *__bytebuf) noexcept

int_type	sbumpc ()

int_type	sgetc ()

streamsize	sgetn (char_type *__s, streamsize __n)

int_type	snextc ()

int_type	sputbackc (char_type __c)

int_type	sputc (char_type __c)

streamsize	sputn (const char_type *__s, streamsize __n)

state_type	state () const noexcept

int_type	sungetc ()


basic_streambuf *	pubsetbuf (char_type *__s, streamsize __n)

pos_type	pubseekoff (off_type __off, ios_base::seekdir __way, ios_base::openmode __mode=ios_base::in\|ios_base::out)

pos_type	pubseekpos (pos_type __sp, ios_base::openmode __mode=ios_base::in\|ios_base::out)

int	pubsync ()

Protected Member Functions
void	__safe_gbump (streamsize __n)

void	__safe_pbump (streamsize __n)

void	gbump (int __n)

virtual void	imbue (const locale &__loc)

_Wide_streambuf::int_type	overflow (typename _Wide_streambuf::int_type __out)

virtual int_type	pbackfail (int_type __c=traits_type::eof())

void	pbump (int __n)

virtual pos_type	seekoff (off_type, ios_base::seekdir, ios_base::openmode=ios_base::in\|ios_base::out)

virtual pos_type	seekpos (pos_type, ios_base::openmode=ios_base::in\|ios_base::out)

virtual basic_streambuf< char_type, _Traits > *	setbuf (char_type *, streamsize)

void	setg (char_type __gbeg, char_type __gnext, char_type *__gend)

void	setp (char_type __pbeg, char_type __pend)

virtual streamsize	showmanyc ()

void	swap (basic_streambuf &__sb)

int	sync ()

virtual int_type	uflow ()

_Wide_streambuf::int_type	underflow ()

virtual streamsize	xsgetn (char_type *__s, streamsize __n)

virtual streamsize	xsputn (const char_type *__s, streamsize __n)

streamsize	xsputn (const typename _Wide_streambuf::char_type *__s, streamsize __n)


char_type *	eback () const

char_type *	gptr () const

char_type *	egptr () const


char_type *	pbase () const

char_type *	pptr () const

char_type *	epptr () const

Protected Attributes
locale	_M_buf_locale

char_type *	_M_in_beg

char_type *	_M_in_cur

char_type *	_M_in_end

char_type *	_M_out_beg

char_type *	_M_out_cur

char_type *	_M_out_end

Detailed Description

template<typename _Codecvt, typename _Elem = wchar_t, typename _Tr = char_traits<_Elem>>
class std::wbuffer_convert< _Codecvt, _Elem, _Tr >

Buffer conversions.

Definition at line 412 of file locale_conv.h.

Member Typedef Documentation

◆ __streambuf_type

template<typename _CharT, typename _Traits>

typedef basic_streambuf<char_type, traits_type> std::basic_streambuf< _CharT, _Traits >::__streambuf_type

inherited

This is a non-standard type.

Definition at line 144 of file streambuf.

◆ char_type

template<typename _CharT, typename _Traits>

typedef _CharT std::basic_streambuf< _CharT, _Traits >::char_type

inherited

These are standard types. They permit a standardized way of referring to names of (or names dependent on) the template parameters, which are specific to the implementation.

Definition at line 135 of file streambuf.

◆ int_type

template<typename _CharT, typename _Traits>

typedef traits_type::int_type std::basic_streambuf< _CharT, _Traits >::int_type

inherited

These are standard types. They permit a standardized way of referring to names of (or names dependent on) the template parameters, which are specific to the implementation.

Definition at line 137 of file streambuf.

◆ off_type

template<typename _CharT, typename _Traits>

typedef traits_type::off_type std::basic_streambuf< _CharT, _Traits >::off_type

inherited

These are standard types. They permit a standardized way of referring to names of (or names dependent on) the template parameters, which are specific to the implementation.

Definition at line 139 of file streambuf.

◆ pos_type

template<typename _CharT, typename _Traits>

typedef traits_type::pos_type std::basic_streambuf< _CharT, _Traits >::pos_type

inherited

These are standard types. They permit a standardized way of referring to names of (or names dependent on) the template parameters, which are specific to the implementation.

Definition at line 138 of file streambuf.

◆ state_type

template<typename _Codecvt, typename _Elem = wchar_t, typename _Tr = char_traits<_Elem>>

typedef _Codecvt::state_type std::wbuffer_convert< _Codecvt, _Elem, _Tr >::state_type

Definition at line 418 of file locale_conv.h.

◆ traits_type

template<typename _CharT, typename _Traits>

typedef _Traits std::basic_streambuf< _CharT, _Traits >::traits_type

inherited

These are standard types. They permit a standardized way of referring to names of (or names dependent on) the template parameters, which are specific to the implementation.

Definition at line 136 of file streambuf.

Constructor & Destructor Documentation

◆ wbuffer_convert() [1/2]

template<typename _Codecvt, typename _Elem = wchar_t, typename _Tr = char_traits<_Elem>>

std::wbuffer_convert< _Codecvt, _Elem, _Tr >::wbuffer_convert ( )

inline

Default constructor.

Definition at line 421 of file locale_conv.h.

References wbuffer_convert().

Referenced by wbuffer_convert().

◆ wbuffer_convert() [2/2]

template<typename _Codecvt, typename _Elem = wchar_t, typename _Tr = char_traits<_Elem>>

std::wbuffer_convert< _Codecvt, _Elem, _Tr >::wbuffer_convert	(	streambuf *	__bytebuf,
		_Codecvt *	__pcvt = new _Codecvt,
		state_type	__state = state_type() )

inlineexplicit

Constructor.

Parameters

__bytebuf	The underlying byte stream buffer.
__pcvt	The facet to use for conversions.
__state	Initial conversion state.

Takes ownership of __pcvt and will delete it in the destructor.

Definition at line 432 of file locale_conv.h.

References std::basic_streambuf< _CharT, _Traits >::setg(), and std::basic_streambuf< _CharT, _Traits >::setp().

Member Function Documentation

◆ __safe_gbump()

template<typename _CharT, typename _Traits>

void std::basic_streambuf< _CharT, _Traits >::__safe_gbump ( streamsize __n )

inlineprotectedinherited

Definition at line 804 of file streambuf.

◆ __safe_pbump()

template<typename _CharT, typename _Traits>

void std::basic_streambuf< _CharT, _Traits >::__safe_pbump ( streamsize __n )

inlineprotectedinherited

Definition at line 807 of file streambuf.

◆ eback()

template<typename _CharT, typename _Traits>

char_type * std::basic_streambuf< _CharT, _Traits >::eback ( ) const

inlineprotectedinherited

Access to the get area.

These functions are only available to other protected functions, including derived classes.

eback() returns the beginning pointer for the input sequence
gptr() returns the next pointer for the input sequence
egptr() returns the end pointer for the input sequence

Definition at line 491 of file streambuf.

Referenced by std::basic_filebuf< _CharT, _Traits >::imbue(), std::basic_stringbuf< _CharT, _Traits, _Alloc >::overflow(), std::basic_filebuf< _CharT, _Traits >::pbackfail(), std::basic_stringbuf< _CharT, _Traits, _Alloc >::pbackfail(), std::basic_stringbuf< _CharT, _Traits, _Alloc >::seekoff(), std::basic_stringbuf< _CharT, _Traits, _Alloc >::seekpos(), std::basic_filebuf< _CharT, _Traits >::underflow(), and std::basic_filebuf< _CharT, _Traits >::xsgetn().

◆ egptr()

template<typename _CharT, typename _Traits>

char_type * std::basic_streambuf< _CharT, _Traits >::egptr ( ) const

inlineprotectedinherited

Access to the get area.

These functions are only available to other protected functions, including derived classes.

eback() returns the beginning pointer for the input sequence
gptr() returns the next pointer for the input sequence
egptr() returns the end pointer for the input sequence

Definition at line 497 of file streambuf.

Referenced by std::basic_stringbuf< _CharT, _Traits, _Alloc >::overflow(), std::basic_stringbuf< _CharT, _Traits, _Alloc >::seekoff(), std::basic_stringbuf< _CharT, _Traits, _Alloc >::seekpos(), std::basic_filebuf< _CharT, _Traits >::showmanyc(), std::basic_filebuf< _CharT, _Traits >::underflow(), std::basic_stringbuf< _CharT, _Traits, _Alloc >::underflow(), std::wbuffer_convert< _Codecvt, _Elem, _Tr >::underflow(), std::basic_filebuf< _CharT, _Traits >::xsgetn(), and xsgetn().

◆ epptr()

template<typename _CharT, typename _Traits>

char_type * std::basic_streambuf< _CharT, _Traits >::epptr ( ) const

inlineprotectedinherited

Access to the put area.

These functions are only available to other protected functions, including derived classes.

pbase() returns the beginning pointer for the output sequence
pptr() returns the next pointer for the output sequence
epptr() returns the end pointer for the output sequence

Definition at line 544 of file streambuf.

Referenced by std::basic_stringbuf< _CharT, _Traits, _Alloc >::overflow(), std::basic_stringbuf< _CharT, _Traits, _Alloc >::seekoff(), std::basic_stringbuf< _CharT, _Traits, _Alloc >::seekpos(), std::basic_filebuf< _CharT, _Traits >::xsputn(), and xsputn().

◆ gbump()

template<typename _CharT, typename _Traits>

void std::basic_streambuf< _CharT, _Traits >::gbump ( int __n )

inlineprotectedinherited

Moving the read position.

Parameters

__n	The delta by which to move.

This just advances the read position without returning any data.

Definition at line 507 of file streambuf.

Referenced by std::basic_filebuf< _CharT, _Traits >::pbackfail(), std::basic_stringbuf< _CharT, _Traits, _Alloc >::pbackfail(), and std::basic_filebuf< _CharT, _Traits >::xsgetn().

◆ getloc()

template<typename _CharT, typename _Traits>

locale std::basic_streambuf< _CharT, _Traits >::getloc ( ) const

inlineinherited

Locale access.

Returns: The current locale in effect.

If pubimbue(loc) has been called, then the most recent loc is returned. Otherwise the global locale in effect at the time of construction is returned.

Definition at line 235 of file streambuf.

◆ gptr()

template<typename _CharT, typename _Traits>

char_type * std::basic_streambuf< _CharT, _Traits >::gptr ( ) const

inlineprotectedinherited

Access to the get area.

These functions are only available to other protected functions, including derived classes.

eback() returns the beginning pointer for the input sequence
gptr() returns the next pointer for the input sequence
egptr() returns the end pointer for the input sequence

Definition at line 494 of file streambuf.

Referenced by std::basic_filebuf< _CharT, _Traits >::imbue(), std::basic_stringbuf< _CharT, _Traits, _Alloc >::overflow(), std::basic_filebuf< _CharT, _Traits >::pbackfail(), std::basic_stringbuf< _CharT, _Traits, _Alloc >::pbackfail(), std::basic_stringbuf< _CharT, _Traits, _Alloc >::seekoff(), std::basic_filebuf< _CharT, _Traits >::showmanyc(), std::basic_filebuf< _CharT, _Traits >::underflow(), std::basic_stringbuf< _CharT, _Traits, _Alloc >::underflow(), std::wbuffer_convert< _Codecvt, _Elem, _Tr >::underflow(), std::basic_filebuf< _CharT, _Traits >::xsgetn(), and xsgetn().

◆ imbue()

template<typename _CharT, typename _Traits>

virtual void std::basic_streambuf< _CharT, _Traits >::imbue ( const locale & __loc )

inlineprotectedvirtualinherited

Changes translations.

Parameters

__loc A new locale.

Translations done during I/O which depend on the current locale are changed by this call. The standard adds, Between invocations of this function a class derived from streambuf can safely cache results of calls to locale functions and to members of facets so obtained.

Note: Base class version does nothing.

Reimplemented in std::basic_filebuf< _CharT, _Traits >, std::basic_filebuf< _CharT, encoding_char_traits< _CharT > >, std::basic_filebuf< _CharT, std::char_traits< _CharT > >, std::basic_filebuf< char >, std::basic_filebuf< char >, std::basic_filebuf< char_type, traits_type >, std::basic_filebuf< char_type, traits_type >, std::basic_filebuf< wchar_t >, and std::basic_filebuf< wchar_t >.

Definition at line 585 of file streambuf.

◆ in_avail()

template<typename _CharT, typename _Traits>

streamsize std::basic_streambuf< _CharT, _Traits >::in_avail ( )

inlineinherited

Looking ahead into the stream.

Returns: The number of characters available.

If a read position is available, returns the number of characters available for reading before the buffer must be refilled. Otherwise returns the derived showmanyc().

Definition at line 293 of file streambuf.

◆ overflow()

template<typename _Codecvt, typename _Elem = wchar_t, typename _Tr = char_traits<_Elem>>

_Wide_streambuf::int_type std::wbuffer_convert< _Codecvt, _Elem, _Tr >::overflow ( typename _Wide_streambuf::int_type __c )

inlineprotectedvirtual

Consumes data from the buffer; writes to the controlled sequence.

Parameters

__c	An additional character to consume.

Returns: eof() to indicate failure, something else (usually __c, or not_eof())

Informally, this function is called when the output buffer is full (or does not exist, as buffering need not actually be done). If a buffer exists, it is consumed, with some effect on the controlled sequence. (Typically, the buffer is written out to the sequence verbatim.) In either case, the character c is also written out, if __c is not eof().

For a formal definition of this function, see a good text such as Langer & Kreft, or [27.5.2.4.5]/3-7.

A functioning output streambuf can be created by overriding only this function (no buffer area will be used).

Note: Base class version does nothing, returns eof().

Reimplemented from std::basic_streambuf< _CharT, _Traits >.

Definition at line 472 of file locale_conv.h.

References std::basic_streambuf< _CharT, _Traits >::sputc().

◆ pbackfail()

template<typename _CharT, typename _Traits>

virtual int_type std::basic_streambuf< _CharT, _Traits >::pbackfail ( int_type __c = traits_type::eof() )

inlineprotectedvirtualinherited

Tries to back up the input sequence.

Parameters

__c	The character to be inserted back into the sequence.

Returns: eof() on failure, some other value on success

Postcondition: The constraints of gptr(), eback(), and pptr() are the same as for underflow().

Note: Base class version does nothing, returns eof().

Definition at line 733 of file streambuf.

◆ pbase()

template<typename _CharT, typename _Traits>

char_type * std::basic_streambuf< _CharT, _Traits >::pbase ( ) const

inlineprotectedinherited

Access to the put area.

These functions are only available to other protected functions, including derived classes.

pbase() returns the beginning pointer for the output sequence
pptr() returns the next pointer for the output sequence
epptr() returns the end pointer for the output sequence

Definition at line 538 of file streambuf.

Referenced by std::basic_filebuf< _CharT, _Traits >::overflow(), std::basic_stringbuf< _CharT, _Traits, _Alloc >::overflow(), std::basic_filebuf< _CharT, _Traits >::seekoff(), std::basic_stringbuf< _CharT, _Traits, _Alloc >::seekoff(), std::basic_stringbuf< _CharT, _Traits, _Alloc >::seekpos(), std::basic_filebuf< _CharT, _Traits >::sync(), and std::basic_filebuf< _CharT, _Traits >::xsputn().

◆ pbump()

template<typename _CharT, typename _Traits>

void std::basic_streambuf< _CharT, _Traits >::pbump ( int __n )

inlineprotectedinherited

Moving the write position.

Parameters

__n	The delta by which to move.

This just advances the write position without returning any data.

Definition at line 554 of file streambuf.

Referenced by std::basic_filebuf< _CharT, _Traits >::overflow(), and std::basic_stringbuf< _CharT, _Traits, _Alloc >::overflow().

◆ pptr()

template<typename _CharT, typename _Traits>

char_type * std::basic_streambuf< _CharT, _Traits >::pptr ( ) const

inlineprotectedinherited

Access to the put area.

These functions are only available to other protected functions, including derived classes.

pbase() returns the beginning pointer for the output sequence
pptr() returns the next pointer for the output sequence
epptr() returns the end pointer for the output sequence

Definition at line 541 of file streambuf.

Referenced by std::basic_filebuf< _CharT, _Traits >::overflow(), std::basic_stringbuf< _CharT, _Traits, _Alloc >::overflow(), std::basic_filebuf< _CharT, _Traits >::seekoff(), std::basic_stringbuf< _CharT, _Traits, _Alloc >::seekoff(), std::basic_filebuf< _CharT, _Traits >::sync(), std::basic_filebuf< _CharT, _Traits >::xsputn(), and xsputn().

◆ pubimbue()

template<typename _CharT, typename _Traits>

locale std::basic_streambuf< _CharT, _Traits >::pubimbue ( const locale & __loc )

inlineinherited

Entry point for imbue().

Parameters

__loc The new locale.

Returns: The previous locale.

Calls the derived imbue(__loc).

Definition at line 218 of file streambuf.

◆ pubseekoff()

template<typename _CharT, typename _Traits>

pos_type std::basic_streambuf< _CharT, _Traits >::pubseekoff	(	off_type	__off,
		ios_base::seekdir	__way,
		ios_base::openmode	__mode = ios_base::in \| ios_base::out )

inlineinherited

Alters the stream position.

Parameters

__off	Offset.
__way	Value for ios_base::seekdir.
__mode	Value for ios_base::openmode.

Calls virtual seekoff function.

Definition at line 260 of file streambuf.

◆ pubseekpos()

template<typename _CharT, typename _Traits>

pos_type std::basic_streambuf< _CharT, _Traits >::pubseekpos	(	pos_type	__sp,
		ios_base::openmode	__mode = ios_base::in \| ios_base::out )

inlineinherited

Alters the stream position.

Parameters

__sp	Position
__mode	Value for ios_base::openmode.

Calls virtual seekpos function.

Definition at line 272 of file streambuf.

◆ pubsetbuf()

template<typename _CharT, typename _Traits>

basic_streambuf * std::basic_streambuf< _CharT, _Traits >::pubsetbuf	(	char_type *	__s,
		streamsize	__n )

inlineinherited

Entry points for derived buffer functions.

The public versions of pubfoo dispatch to the protected derived foo member functions, passing the arguments (if any) and returning the result unchanged.

Definition at line 248 of file streambuf.

◆ pubsync()

template<typename _CharT, typename _Traits>

int std::basic_streambuf< _CharT, _Traits >::pubsync ( )

inlineinherited

Calls virtual sync function.

Definition at line 280 of file streambuf.

Referenced by std::basic_istream< _CharT, _Traits >::sync().

◆ rdbuf() [1/2]

template<typename _Codecvt, typename _Elem = wchar_t, typename _Tr = char_traits<_Elem>>

streambuf * std::wbuffer_convert< _Codecvt, _Elem, _Tr >::rdbuf ( ) const

inlinenoexcept

Definition at line 453 of file locale_conv.h.

◆ rdbuf() [2/2]

template<typename _Codecvt, typename _Elem = wchar_t, typename _Tr = char_traits<_Elem>>

streambuf * std::wbuffer_convert< _Codecvt, _Elem, _Tr >::rdbuf ( streambuf * __bytebuf )

inlinenoexcept

Definition at line 456 of file locale_conv.h.

◆ sbumpc()

template<typename _CharT, typename _Traits>

int_type std::basic_streambuf< _CharT, _Traits >::sbumpc ( )

inlineinherited

Getting the next character.

Returns: The next character, or eof.

If the input read position is available, returns that character and increments the read pointer, otherwise calls and returns uflow().

Definition at line 325 of file streambuf.

Referenced by std::basic_istream< _CharT, _Traits >::getline().

◆ seekoff()

template<typename _CharT, typename _Traits>

virtual pos_type std::basic_streambuf< _CharT, _Traits >::seekoff	(	off_type	,
		ios_base::seekdir	,
		ios_base::openmode	= ios_base::in \| ios_base::out )

inlineprotectedvirtualinherited

Alters the stream positions.

Each derived class provides its own appropriate behavior.

Note: Base class version does nothing, returns a pos_type that represents an invalid stream position.

Definition at line 611 of file streambuf.

◆ seekpos()

template<typename _CharT, typename _Traits>

virtual pos_type std::basic_streambuf< _CharT, _Traits >::seekpos	(	pos_type	,
		ios_base::openmode	= ios_base::in \| ios_base::out )

inlineprotectedvirtualinherited

Alters the stream positions.

Each derived class provides its own appropriate behavior.

Note: Base class version does nothing, returns a pos_type that represents an invalid stream position.

Definition at line 623 of file streambuf.

◆ setbuf()

template<typename _CharT, typename _Traits>

virtual basic_streambuf< char_type, _Traits > * std::basic_streambuf< _CharT, _Traits >::setbuf	(	char_type *	,
		streamsize	)

inlineprotectedvirtualinherited

Manipulates the buffer.

Each derived class provides its own appropriate behavior. See the next-to-last paragraph of https://gcc.gnu.org/onlinedocs/libstdc++/manual/streambufs.html#io.streambuf.buffering for more on this function.

Note: Base class version does nothing, returns this.

Reimplemented in std::basic_filebuf< _CharT, _Traits >, std::basic_filebuf< _CharT, encoding_char_traits< _CharT > >, std::basic_filebuf< _CharT, std::char_traits< _CharT > >, std::basic_filebuf< char >, std::basic_filebuf< char_type, traits_type >, std::basic_filebuf< wchar_t >, std::basic_stringbuf< _CharT, _Traits, _Alloc >, std::basic_stringbuf< char >, and std::basic_stringbuf< char >.

Definition at line 600 of file streambuf.

◆ setg()

template<typename _CharT, typename _Traits>

void std::basic_streambuf< _CharT, _Traits >::setg	(	char_type *	__gbeg,
		char_type *	__gnext,
		char_type *	__gend )

inlineprotectedinherited

Setting the three read area pointers.

Parameters

__gbeg	A pointer.
__gnext	A pointer.
__gend	A pointer.

Postcondition: __gbeg == eback(), __gnext == gptr(), and __gend == egptr()

Definition at line 518 of file streambuf.

Referenced by std::wbuffer_convert< _Codecvt, _Elem, _Tr >::wbuffer_convert(), std::basic_stringbuf< _CharT, _Traits, _Alloc >::overflow(), std::basic_stringbuf< _CharT, _Traits, _Alloc >::seekoff(), std::basic_stringbuf< _CharT, _Traits, _Alloc >::seekpos(), and std::basic_filebuf< _CharT, _Traits >::xsgetn().

◆ setp()

template<typename _CharT, typename _Traits>

void std::basic_streambuf< _CharT, _Traits >::setp	(	char_type *	__pbeg,
		char_type *	__pend )

inlineprotectedinherited

Setting the three write area pointers.

Parameters

__pbeg	A pointer.
__pend	A pointer.

Postcondition: __pbeg == pbase(), __pbeg == pptr(), and __pend == epptr()

Definition at line 564 of file streambuf.

Referenced by std::wbuffer_convert< _Codecvt, _Elem, _Tr >::wbuffer_convert().

◆ sgetc()

template<typename _CharT, typename _Traits>

int_type std::basic_streambuf< _CharT, _Traits >::sgetc ( )

inlineinherited

Getting the next character.

Returns: The next character, or eof.

If the input read position is available, returns that character, otherwise calls and returns underflow(). Does not move the read position after fetching the character.

Definition at line 347 of file streambuf.

Referenced by std::basic_istream< _CharT, _Traits >::get(), std::basic_istream< _CharT, _Traits >::getline(), std::basic_istream< _CharT, _Traits >::ignore(), and std::basic_istream< _CharT, _Traits >::ignore().

◆ sgetn()

template<typename _CharT, typename _Traits>

streamsize std::basic_streambuf< _CharT, _Traits >::sgetn	(	char_type *	__s,
		streamsize	__n )

inlineinherited

Entry point for xsgetn.

Parameters

__s	A buffer area.
__n	A count.

Returns xsgetn(__s,__n). The effect is to fill __s[0] through __s[__n-1] with characters from the input sequence, if possible.

Definition at line 366 of file streambuf.

◆ showmanyc()

template<typename _CharT, typename _Traits>

virtual streamsize std::basic_streambuf< _CharT, _Traits >::showmanyc ( )

inlineprotectedvirtualinherited

Investigating the data available.

Returns: An estimate of the number of characters available in the input sequence, or -1.

If it returns a positive value, then successive calls to underflow() will not return traits::eof() until at least that number of characters have been supplied. If showmanyc() returns -1, then calls to underflow() or uflow() will fail. [27.5.2.4.3]/1

Note: Base class version does nothing, returns zero.; The standard adds that the intention is not only that the calls [to underflow or uflow] will not return eof() but that they will return immediately.; The standard adds that the morphemes of showmanyc are es-how-many-see, not show-manic.

Reimplemented in std::basic_filebuf< _CharT, _Traits >, std::basic_filebuf< _CharT, encoding_char_traits< _CharT > >, std::basic_filebuf< _CharT, std::char_traits< _CharT > >, std::basic_filebuf< char >, std::basic_filebuf< char >, std::basic_filebuf< char_type, traits_type >, std::basic_filebuf< char_type, traits_type >, std::basic_filebuf< wchar_t >, std::basic_filebuf< wchar_t >, std::basic_stringbuf< _CharT, _Traits, _Alloc >, std::basic_stringbuf< char >, std::basic_stringbuf< char >, std::basic_stringbuf< wchar_t >, and std::basic_stringbuf< wchar_t >.

Definition at line 658 of file streambuf.

◆ snextc()

template<typename _CharT, typename _Traits>

int_type std::basic_streambuf< _CharT, _Traits >::snextc ( )

inlineinherited

Getting the next character.

Returns: The next character, or eof.

Calls sbumpc(), and if that function returns traits::eof(), so does this function. Otherwise, sgetc().

Definition at line 307 of file streambuf.

Referenced by std::basic_istream< _CharT, _Traits >::getline(), std::basic_istream< char_type, traits_type >::ignore(), std::basic_istream< char_type, traits_type >::operator>>(), and std::basic_istream< char_type, traits_type >::putback().

◆ sputbackc()

template<typename _CharT, typename _Traits>

int_type std::basic_streambuf< _CharT, _Traits >::sputbackc ( char_type __c )

inlineinherited

Pushing characters back into the input stream.

Parameters

__c	The character to push back.

Returns: The previous character, if possible.

Similar to sungetc(), but __c is pushed onto the stream instead of the previous character. If successful, the next character fetched from the input stream will be __c.

Definition at line 381 of file streambuf.

Referenced by std::basic_istream< _CharT, _Traits >::putback().

◆ sputc()

template<typename _CharT, typename _Traits>

int_type std::basic_streambuf< _CharT, _Traits >::sputc ( char_type __c )

inlineinherited

Entry point for all single-character output functions.

Parameters

__c	A character to output.

Returns: __c, if possible.

One of two public output functions.

If a write position is available for the output sequence (i.e., the buffer is not full), stores __c in that position, increments the position, and returns traits::to_int_type(__c). If a write position is not available, returns overflow(__c).

Definition at line 433 of file streambuf.

Referenced by std::wbuffer_convert< _Codecvt, _Elem, _Tr >::overflow().

◆ sputn()

template<typename _CharT, typename _Traits>

streamsize std::basic_streambuf< _CharT, _Traits >::sputn	(	const char_type *	__s,
		streamsize	__n )

inlineinherited

Entry point for all single-character output functions.

Parameters

__s	A buffer read area.
__n	A count.

One of two public output functions.

Returns xsputn(__s,__n). The effect is to write __s[0] through __s[__n-1] to the output sequence, if possible.

Definition at line 459 of file streambuf.

◆ state()

template<typename _Codecvt, typename _Elem = wchar_t, typename _Tr = char_traits<_Elem>>

state_type std::wbuffer_convert< _Codecvt, _Elem, _Tr >::state ( ) const

inlinenoexcept

The conversion state following the last conversion.

Definition at line 464 of file locale_conv.h.

◆ sungetc()

template<typename _CharT, typename _Traits>

int_type std::basic_streambuf< _CharT, _Traits >::sungetc ( )

inlineinherited

Moving backwards in the input stream.

Returns: The previous character, if possible.

If a putback position is available, this function decrements the input pointer and returns that character. Otherwise, calls and returns pbackfail(). The effect is to unget the last character gotten.

Definition at line 406 of file streambuf.

Referenced by std::basic_istream< char_type, traits_type >::sentry::sentry().

◆ swap()

template<typename _CharT, typename _Traits>

void std::basic_streambuf< _CharT, _Traits >::swap ( basic_streambuf< _CharT, _Traits > & __sb )

inlineprotectedinherited

Definition at line 821 of file streambuf.

◆ sync()

template<typename _Codecvt, typename _Elem = wchar_t, typename _Tr = char_traits<_Elem>>

int std::wbuffer_convert< _Codecvt, _Elem, _Tr >::sync ( )

inlineprotectedvirtual

Synchronizes the buffer arrays with the controlled sequences.

Returns: -1 on failure.

Each derived class provides its own appropriate behavior, including the definition of failure.

Note: Base class version does nothing, returns zero.

Reimplemented from std::basic_streambuf< _CharT, _Traits >.

Definition at line 468 of file locale_conv.h.

◆ uflow()

template<typename _CharT, typename _Traits>

virtual int_type std::basic_streambuf< _CharT, _Traits >::uflow ( )

inlineprotectedvirtualinherited

Fetches more data from the controlled sequence.

Returns: The first character from the pending sequence.

Informally, this function does the same thing as underflow(), and in fact is required to call that function. It also returns the new character, like underflow() does. However, this function also moves the read position forward by one.

Reimplemented in __gnu_cxx::stdio_sync_filebuf< _CharT, _Traits >.

Definition at line 709 of file streambuf.

Referenced by xsgetn().

◆ underflow()

template<typename _Codecvt, typename _Elem = wchar_t, typename _Tr = char_traits<_Elem>>

_Wide_streambuf::int_type std::wbuffer_convert< _Codecvt, _Elem, _Tr >::underflow ( )

inlineprotectedvirtual

Fetches more data from the controlled sequence.

Returns: The first character from the pending sequence.

Informally, this function is called when the input buffer is exhausted (or does not exist, as buffering need not actually be done). If a buffer exists, it is refilled. In either case, the next available character is returned, or traits::eof() to indicate a null pending sequence.

For a formal definition of the pending sequence, see a good text such as Langer & Kreft, or [27.5.2.4.3]/7-14.

A functioning input streambuf can be created by overriding only this function (no buffer area will be used). For an example, see https://gcc.gnu.org/onlinedocs/libstdc++/manual/streambufs.html

Note: Base class version does nothing, returns eof().

Reimplemented from std::basic_streambuf< _CharT, _Traits >.

Definition at line 482 of file locale_conv.h.

References std::basic_streambuf< _CharT, _Traits >::egptr(), and std::basic_streambuf< _CharT, _Traits >::gptr().

◆ xsgetn()

template<typename _CharT, typename _Traits>

streamsize std::basic_streambuf< _CharT, _Traits >::xsgetn	(	char_type *	__s,
		streamsize	__n )

protectedvirtualinherited

Multiple character extraction.

Parameters

__s	A buffer area.
__n	Maximum number of characters to assign.

Returns: The number of characters assigned.

Fills __s[0] through __s[__n-1] with characters from the input sequence, as if by sbumpc(). Stops when either __n characters have been copied, or when traits::eof() would be copied.

It is expected that derived classes provide a more efficient implementation by overriding this definition.

Reimplemented in std::basic_filebuf< _CharT, _Traits >, std::basic_filebuf< _CharT, encoding_char_traits< _CharT > >, std::basic_filebuf< _CharT, std::char_traits< _CharT > >, std::basic_filebuf< char >, std::basic_filebuf< char >, std::basic_filebuf< char_type, traits_type >, std::basic_filebuf< char_type, traits_type >, and std::basic_filebuf< wchar_t >.

Definition at line 50 of file streambuf.tcc.

References egptr(), gptr(), std::min(), and uflow().

◆ xsputn() [1/2]

template<typename _CharT, typename _Traits>

streamsize std::basic_streambuf< _CharT, _Traits >::xsputn	(	const char_type *	__s,
		streamsize	__n )

protectedvirtualinherited

Multiple character insertion.

Parameters

__s	A buffer area.
__n	Maximum number of characters to write.

Returns: The number of characters written.

Writes __s[0] through __s[__n-1] to the output sequence, as if by sputc(). Stops when either n characters have been copied, or when sputc() would return traits::eof().

It is expected that derived classes provide a more efficient implementation by overriding this definition.

Reimplemented in std::basic_filebuf< _CharT, _Traits >, std::basic_filebuf< _CharT, encoding_char_traits< _CharT > >, std::basic_filebuf< _CharT, std::char_traits< _CharT > >, std::basic_filebuf< char >, std::basic_filebuf< char >, std::basic_filebuf< char_type, traits_type >, std::basic_filebuf< char_type, traits_type >, and std::basic_filebuf< wchar_t >.

Definition at line 84 of file streambuf.tcc.

References epptr(), std::min(), overflow(), and pptr().

◆ xsputn() [2/2]

template<typename _Codecvt, typename _Elem = wchar_t, typename _Tr = char_traits<_Elem>>

streamsize std::wbuffer_convert< _Codecvt, _Elem, _Tr >::xsputn	(	const typename _Wide_streambuf::char_type *	__s,
		streamsize	__n )

inlineprotected

Definition at line 494 of file locale_conv.h.

Member Data Documentation

◆ _M_buf_locale

template<typename _CharT, typename _Traits>

locale std::basic_streambuf< _CharT, _Traits >::_M_buf_locale

protectedinherited

Current locale setting.

Definition at line 201 of file streambuf.

Referenced by std::basic_filebuf< _CharT, _Traits >::basic_filebuf().

◆ _M_in_beg

template<typename _CharT, typename _Traits>

char_type* std::basic_streambuf< _CharT, _Traits >::_M_in_beg

protectedinherited

Start of get area.

Definition at line 193 of file streambuf.

◆ _M_in_cur

template<typename _CharT, typename _Traits>

char_type* std::basic_streambuf< _CharT, _Traits >::_M_in_cur

protectedinherited

Current read area.

Definition at line 194 of file streambuf.

◆ _M_in_end

template<typename _CharT, typename _Traits>

char_type* std::basic_streambuf< _CharT, _Traits >::_M_in_end

protectedinherited

End of get area.

Definition at line 195 of file streambuf.

◆ _M_out_beg

template<typename _CharT, typename _Traits>

char_type* std::basic_streambuf< _CharT, _Traits >::_M_out_beg

protectedinherited

Start of put area.

Definition at line 196 of file streambuf.

◆ _M_out_cur

template<typename _CharT, typename _Traits>

char_type* std::basic_streambuf< _CharT, _Traits >::_M_out_cur

protectedinherited

Current put area.

Definition at line 197 of file streambuf.

◆ _M_out_end

template<typename _CharT, typename _Traits>

char_type* std::basic_streambuf< _CharT, _Traits >::_M_out_end

protectedinherited

End of put area.

Definition at line 198 of file streambuf.

The documentation for this class was generated from the following file:

locale_conv.h

Public Types

Public Member Functions

Protected Member Functions

Protected Attributes

Detailed Description

Member Typedef Documentation

◆ __streambuf_type

◆ char_type

◆ int_type

◆ off_type

◆ pos_type

◆ state_type

◆ traits_type

Constructor & Destructor Documentation

◆ wbuffer_convert() [1/2]

◆ wbuffer_convert() [2/2]

Member Function Documentation

◆ __safe_gbump()

◆ __safe_pbump()

◆ eback()

◆ egptr()

◆ epptr()

◆ gbump()

◆ getloc()

◆ gptr()

◆ imbue()

◆ in_avail()

◆ overflow()

◆ pbackfail()

◆ pbase()

◆ pbump()

◆ pptr()

◆ pubimbue()

◆ pubseekoff()

◆ pubseekpos()

◆ pubsetbuf()

◆ pubsync()

◆ rdbuf() [1/2]

◆ rdbuf() [2/2]

◆ sbumpc()

◆ seekoff()

◆ seekpos()

◆ setbuf()

◆ setg()

◆ setp()

◆ sgetc()

◆ sgetn()

◆ showmanyc()

◆ snextc()

◆ sputbackc()

◆ sputc()

◆ sputn()

◆ state()

◆ sungetc()

◆ swap()

◆ sync()

◆ uflow()

◆ underflow()

◆ xsgetn()

◆ xsputn() [1/2]

◆ xsputn() [2/2]

Member Data Documentation

◆ _M_buf_locale

◆ _M_in_beg

◆ _M_in_cur

◆ _M_in_end

◆ _M_out_beg

◆ _M_out_cur

◆ _M_out_end