std::basic_filebuf::overflow
From cppreference.com
< cpp | io | basic filebuf
| protected:
virtual int_type overflow ( int_type c = Traits::eof() ); |
||
Behaves like the base class std::basic_streambuf::overflow, except that to write the data from the put area to the associated character sequence (to the file), first uses codecvt::out() of the imbued locale to convert the characters into external (possibly multibyte) representation, stored in a temporary buffer (allocated as large as necessary), then uses file I/O to copy all fully-converted bytes into the file.
If the conversion fails with std::codecvt_base::error, returns Traits::eof() without attempting any output.
If the associated file is not open (is_open()==false), returns Traits::eof() before doing anything.
Contents |
[edit] Parameters
(none)
[edit] Return value
Traits::not_eof(c) to indicate success or Traits::eof() to indicate failure.
[edit] Example
| This section is incomplete Reason: no example |
[edit] See also
| [virtual]
|
writes characters to the associated output sequence from the put area (virtual protected member function of std::basic_streambuf)
|
| [virtual]
|
reads from the associated file (virtual protected member function) |