[Boost-users] Re: boost::filesystem - no create_file or create_tmp_file?

From: Vladimir Prus (ghost_at_[hidden])
Date: 2005-03-23 06:42:06

Russell Hind wrote:

> Vladimir Prus wrote:
>> 
>> Empty file is simple:
>> 
>>   ofstream ofs("name of file");
>> 
> 
> But it would be helpful if boost would add a function that would fail if
> the file already exists.  The current STL doesn't support this so you
> have to fall back to platform API (in Win32, CreateFile has a flag to do
> this).
> 
> This would be a very useful feature IMHO.

Sure, that's the complexity in creating temporary file. On Linux, you can

   open(..., O_EXCL....)

but then how do you get ifstream out of file descriptor. Surely, there's
<ext/stdio_filebuf.h> in g++ 3.2+, but for other compilers one has to find
other solutions. I indend to try, but not now.

- Volodya