std::basic_streambuf::uflow

 

C++

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Понятия (концепции)

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Ввод / вывод

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Регулярные выражения (C++11)

Атомарные примитивы (C++11)

Потоки (C++11)

 

Библиотеки ввода / вывода

I / O манипуляторов

C-стиль I / O

Буферы Original: Buffers The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

basic_streambuf

basic_filebuf

basic_stringbuf

strstreambuf (устарело)

Потоки Original: Streams The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

Абстракций Original: Abstractions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

ios_base

basic_ios

basic_istream

basic_ostream

basic_iostream

Файл I / O Original: File I/O The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

basic_ifstream

basic_ofstream

basic_fstream

Струнный I / O Original: String I/O The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

basic_istringstream

basic_ostringstream

basic_stringstream

Массив I / O Original: Array I/O The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

istrstream (устарело)

ostrstream (устарело)

strstream (устарело)

Типы Original: Types The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

streamoff

streamsize

fpos

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iostream_category (C++11)

io_errc (C++11)

 

std::basic_streambuf

Общественные функции-члены Original: Public member functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

basic_streambuf::~basic_streambuf

Языки Original: Locales The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

basic_streambuf::pubimbue

basic_streambuf::getloc

Позиционирование Original: Positioning The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

basic_streambuf::pubsetbuf

basic_streambuf::pubseekoff

basic_streambuf::pubseekpos

basic_streambuf::pubsync

Получить области Original: Get area The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

basic_streambuf::in_avail

basic_streambuf::snextc

basic_streambuf::sbumpc

basic_streambuf::sgetc

basic_streambuf::sgetn

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basic_streambuf::sputc

basic_streambuf::sputn

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basic_streambuf::sputbackc

basic_streambuf::sungetc

Охраняемые функций-членов Original: Protected member functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

basic_streambuf::basic_streambuf

basic_streambuf::operator= (C++11)

basic_streambuf::swap (C++11)

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basic_streambuf::imbue

Позиционирование Original: Positioning The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

basic_streambuf::setbuf

basic_streambuf::seekoff

basic_streambuf::seekpos

basic_streambuf::sync

Получить области Original: Get area The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

basic_streambuf::showmanyc

basic_streambuf::underflow

basic_streambuf::uflow

basic_streambuf::xsgetn

basic_streambuf::eback basic_streambuf::gptr basic_streambuf::egptr

basic_streambuf::gbump

basic_streambuf::setg

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basic_streambuf::xsputn

basic_streambuf::overflow

basic_streambuf::pbase basic_streambuf::pptr basic_streambuf::epptr

basic_streambuf::pbump

basic_streambuf::setp

Putback Original: Putback The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

basic_streambuf::pbackfail

 

int_type uflow();

Гарантирует, что по крайней мере один символ доступен в области ввода путем обновления указателей на область ввода (при необходимости). В случае успеха возвращает значение этого символа и перемещает значение' получить указатель на один символ. В случае неудачи возвращает traits::eof().

Original:

Ensures that at least one character is available in the input area by updating the pointers to the input area (if needed). On success returns the value of that character and advances the value of the get pointer by one character. On failure returns traits::eof().

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Функция может обновить gptr, egptr и eback указателей для определения местоположения вновь загруженные данные (если таковые имеются). В случае ошибки, функция гарантирует, что либо gptr() == nullptr или gptr() == egptr.

Original:

The function may update gptr, egptr and eback pointers to define the location of newly loaded data (if any). On failure, the function ensures that either gptr() == nullptr or gptr() == egptr.

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Версия базового класса вызова функции underflow. Производные классы могут переопределить эту функцию, чтобы разрешить обновление Get области в случае истощения.

Original:

The base class version of the function calls underflow. The derived classes may override this function to allow updates to the get area in the case of exhaustion.

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Параметры

(Нет)

Original:

(none)

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Возвращаемое значение

Значение символа, на который указывает' получить указатель прежде чем она была проведена на одну или traits::eof() иначе.

Original:

The value of the character that was pointed to by the get pointer before it was advanced by one, or traits::eof() otherwise.

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Версия базового класса возвращает значение, возвращаемое underflow.

Original:

The base class version of the function returns the value returned by underflow.

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Примечание

Общественные функции std::streambuf вызывать эту функцию только тогда, когда gptr() == nullptr или gptr() >= egptr().

Original:

The public functions of std::streambuf call this function only if gptr() == nullptr or gptr() >= egptr().

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См. также

underflow [virtual]	читает символы из соответствующей последовательности ввода Get области Original: reads characters from the associated input sequence to the get area The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (virtual protected функция-член)
overflow [virtual]	пишет символы с соответствующей последовательности выхода из поставленных области Original: writes characters to the associated output sequence from the put area The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (virtual protected функция-член)