std::strstreambuf Class Reference

Inheritance diagram for std::strstreambuf:

List of all members.

Public Types
typedef char_traits< char >	_Traits
typedef basic_streambuf< char, _Traits >	_Base
Public Member Functions
	strstreambuf (streamsize __initial_capacity=0)
	strstreambuf (void *(*__alloc)(size_t), void(*__free)(void *))
	strstreambuf (char *__get, streamsize __n, char *__put=0)
	strstreambuf (signed char *__get, streamsize __n, signed char *__put=0)
	strstreambuf (unsigned char *__get, streamsize __n, unsigned char *__put=0)
	strstreambuf (const char *__get, streamsize __n)
	strstreambuf (const signed char *__get, streamsize __n)
	strstreambuf (const unsigned char *__get, streamsize __n)
virtual	~strstreambuf ()
void	freeze (bool=true)
char *	str ()
int	pcount () const
Protected Member Functions
virtual int_type	overflow (int_type __c=_Traits::eof())
virtual int_type	pbackfail (int_type __c=_Traits::eof())
virtual int_type	underflow ()
	Fetches more data from the controlled sequence.
virtual _Base *	setbuf (char *__buf, streamsize __n)
virtual pos_type	seekoff (off_type __off, ios_base::seekdir __dir, ios_base::openmode __mode=ios_base::in|ios_base::out)
virtual pos_type	seekpos (pos_type __pos, ios_base::openmode __mode=ios_base::in|ios_base::out)
Private Member Functions
strstreambuf &	operator= (const strstreambuf &)
	strstreambuf (const strstreambuf &)
char *	_M_alloc (size_t)
void	_M_free (char *)
void	_M_setup (char *__get, char *__put, streamsize __n)
Private Attributes
void *(*	_M_alloc_fun )(size_t)
void(*	_M_free_fun )(void *)
bool	_M_dynamic: 1
bool	_M_frozen: 1
bool	_M_constant: 1

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Detailed Description

Definition at line 62 of file strstream.

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Member Typedef Documentation

typedef basic_streambuf<char, _Traits> std::strstreambuf::_Base

Definition at line 67 of file strstream.

typedef char_traits<char> std::strstreambuf::_Traits

Definition at line 66 of file strstream.

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Constructor & Destructor Documentation

std::strstreambuf::strstreambuf

(

streamsize

__initial_capacity = 0

)

[explicit]

std::strstreambuf::strstreambuf	(	void *(*)(size_t)	__alloc,
		void(*)(void *)	__free
	)

std::strstreambuf::strstreambuf	(	char *	__get,
		streamsize	__n,
		char *	__put = 0
	)

std::strstreambuf::strstreambuf	(	signed char *	__get,
		streamsize	__n,
		signed char *	__put = 0
	)

std::strstreambuf::strstreambuf	(	unsigned char *	__get,
		streamsize	__n,
		unsigned char *	__put = 0
	)

std::strstreambuf::strstreambuf	(	const char *	__get,
		streamsize	__n
	)

std::strstreambuf::strstreambuf	(	const signed char *	__get,
		streamsize	__n
	)

std::strstreambuf::strstreambuf	(	const unsigned char *	__get,
		streamsize	__n
	)

virtual std::strstreambuf::~strstreambuf

(

)

[virtual]

std::strstreambuf::strstreambuf

(

const strstreambuf &

)

[private]

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Member Function Documentation

char* std::strstreambuf::_M_alloc

(

size_t

)

[private]

void std::strstreambuf::_M_free

(

char *

)

[private]

void std::strstreambuf::_M_setup	(	char *	__get,
		char *	__put,
		streamsize	__n
	)			[private]

void std::strstreambuf::freeze

(

bool

= true

)

strstreambuf& std::strstreambuf::operator=

(

const strstreambuf &

)

[private]

virtual int_type std::strstreambuf::overflow

(

int_type

__c = _Traits::eof()

)

[protected, virtual]

virtual int_type std::strstreambuf::pbackfail

(

int_type

__c = _Traits::eof()

)

[protected, virtual]

int std::strstreambuf::pcount

(

)

const

virtual pos_type std::strstreambuf::seekoff	(	off_type	__off,
		ios_base::seekdir	__dir,
		ios_base::openmode	__mode = ios_base::in|ios_base::out
	)			[protected, virtual]

virtual pos_type std::strstreambuf::seekpos	(	pos_type	__pos,
		ios_base::openmode	__mode = ios_base::in|ios_base::out
	)			[protected, virtual]

virtual _Base* std::strstreambuf::setbuf	(	char *	__buf,
		streamsize	__n
	)			[protected, virtual]

char* std::strstreambuf::str

(

)

virtual int_type std::strstreambuf::underflow

(

)

[protected, virtual]

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 definiton 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 http://gcc.gnu.org/onlinedocs/libstdc++/27_io/howto.html#6

Note:

Base class version does nothing, returns eof().

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

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Member Data Documentation

void*(* std::strstreambuf::_M_alloc_fun)(size_t) [private]

bool std::strstreambuf::_M_constant [private]

Definition at line 120 of file strstream.

bool std::strstreambuf::_M_dynamic [private]

Definition at line 118 of file strstream.

void(* std::strstreambuf::_M_free_fun)(void *) [private]

bool std::strstreambuf::_M_frozen [private]

Definition at line 119 of file strstream.

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

• strstream

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