std::basic_streambuf<CharT,Traits>::pubseekoff, (3) - Linux Manuals

std::basic_streambuf<CharT,Traits>::pubseekoff,: std::basic_streambuf<CharT,Traits>::pubseekoff,

NAME

std::basic_streambuf<CharT,Traits>::pubseekoff, - std::basic_streambuf<CharT,Traits>::pubseekoff,

Synopsis


pos_type pubseekoff( off_type off, std::ios_base::seekdir dir,      (1)
std::ios_base::openmode which = ios_base::in | ios_base::out );
protected:


virtual pos_type seekoff( off_type off, std::ios_base::seekdir dir, (2)


std::ios_base::openmode which = ios_base::in | ios_base::out );


Sets the position indicator of the input and/or output sequence relative to some
other position.


1) Calls seekoff(off, dir, which) of the most derived class


2) The base class version of this function has no effect. The derived classes may
override this function to allow relative positioning of the position indicator.

Parameters


off   - relative position to set the position indicator to.
  defines base position to apply the relative offset to. It can be one of the
  following constants:


dir   - Constant Explanation
  beg      the beginning of a stream
  end      the ending of a stream
  cur      the current position of stream position indicator
  defines which of the input and/or output sequences to affect. It can be one
  or a combination of the following constants:
which -
  Constant Explanation
  in       affect the input sequence
  out      affect the output sequence

Note


Not all combinations of parameters may be valid, see the derived versions of seekoff
for details.

Return value


1) The return value of seekoff(off, dir, which)


2) The resulting absolute position as defined by the position indicator. The base
class version returns pos_type(off_type(-1)).

Example


 This section is incomplete
 Reason: no example

See also


pubseekpos invokes seekpos()
     (public member function)
seekoff    repositions the file position, using relative addressing
[virtual]  (virtual protected member function of std::basic_filebuf<CharT,Traits>)
     repositions the next pointer in the input sequence, output sequence, or
seekoff    both, using relative addressing
[virtual]  (virtual protected member function of
     std::basic_stringbuf<CharT,Traits,Allocator>)
seekoff    repositions the next pointer in the input sequence, output sequence, or
[virtual]  both, using relative addressing
     (virtual protected member function of std::strstreambuf)

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