std::basic_filebuf::uflow

 

C++

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Concepts library (C++20)

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Technical Specifications

 

Input/output library

I/O manipulators

C-style I/O

Buffers

basic_streambuf

basic_filebuf

basic_stringbuf

strstreambuf (deprecated in C++98)

basic_syncbuf (C++20)

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ios_base

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basic_stringstream

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istrstream (deprecated in C++98)

ostrstream (deprecated in C++98)

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basic_osyncstream (C++20)

Types

streamoff

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fpos

Error category interface

iostream_category (C++11)

io_errc (C++11)

 

std::basic_filebuf

Public member functions

basic_filebuf::basic_filebuf

basic_filebuf::~basic_filebuf

basic_filebuf::operator= (C++11)

basic_filebuf::swap (C++11)

basic_filebuf::is_open

basic_filebuf::open

basic_filebuf::close

Protected member functions

basic_filebuf::showmanyc

basic_filebuf::underflow

basic_filebuf::uflow

basic_filebuf::pbackfail

basic_filebuf::overflow

basic_filebuf::setbuf

basic_filebuf::seekoff

basic_filebuf::seekpos

basic_filebuf::sync

basic_filebuf::imbue

Non-member functions

swap(std::basic_filebuf) (C++11)

 

protected: virtual int_type uflow()

Behaves like the underflow(), except that if underflow() succeeds (does not return Traits::eof()), then advances the next pointer for the get area. In other words, consumes one of the characters obtained by underflow().

Parameters

(none)

Return value

The value of the character that was read and consumed in case of success, or Traits::eof() in case of failure.

See also

uflow [virtual]	reads characters from the associated input sequence to the get area and advances the next pointer (virtual protected member function of std::basic_streambuf)
underflow [virtual]	reads from the associated file (virtual protected member function)
overflow [virtual]	writes characters to the associated file from the put area (virtual protected member function)