27 Input/output library [input.output]

27.6 Stream buffers [stream.buffers]

27.6.3 Class template basic_streambuf<charT,traits> [streambuf]

27.6.3.2 basic_streambuf public member functions [streambuf.members]

27.6.3.2.3 Get area [streambuf.pub.get]

streamsize in_avail();

1

Returns: If a read position is available, returns egptr() - gptr(). Otherwise returns showmanyc() ([streambuf.virt.get]).

int_type snextc();

2

Effects: Calls sbumpc().

3

Returns: If that function returns traits::eof(), returns traits::eof(). Otherwise, returns sgetc().

int_type sbumpc();

4

Returns: If the input sequence read position is not available, returns uflow(). Otherwise, returns traits::to_int_type(*gptr()) and increments the next pointer for the input sequence.

int_type sgetc();

5

Returns: If the input sequence read position is not available, returns underflow(). Otherwise, returns traits::to_int_type(*gptr()).

streamsize sgetn(char_type* s, streamsize n);

6

Returns: xsgetn(s, n).