[Boost-users] Can I create and open a file only if it does not exist ?

Subject: [Boost-users] Can I create and open a file only if it does not exist ?
From: Timothy Madden (terminatorul_at_[hidden])
Date: 2010-09-05 18:33:08

Hello

I see file_descriptor_sink uses the openmode flags from std::ios_base, 
and also file class actually calls the open function standard C++ 
basic_filebuf.

I would like to open a temporary file (generated with unique_path) only 
if it does not exist, as if by POSIX open() with O_CREAT | E_EXCL, and 
no combination of ios_base::openmode flags allows for that.

Is there a way in boost to create and open a file only if it does not 
exist ?

Thank you,
Timothy Madden