🚀 go-pugleaf

On May 17, 9:42 am, Darko Miletic <kik...@fibertel.com.ar> wrote:
[...]
> No. There is no standard way AFAIK to do that.

That's correct. For now at least. There is some effort to add support
for this in the next C++ standard, along the lines of the Classic
Iostream
functions fd(), attach(), and detach(). These extensions have already
been implemented in the Apache C++ Standard Library. See
http://incubator.apache.org/stdcxx/doc/stdlibref/basic-filebuf.html#idx51

> Standard says that all I/O functions (opening, closing, reading and
> writing) are forwarded to the std::basic_filebuf class. Common
> implementation of this class uses C file streams for all operations.
> That is the case with Dinkumware, RW and stlport.

The latest Rogue Wave implementation of the C++ Standard Library
(as well as Apache stdcxx that was derived from it) is based on the
native file I/O (i.e., POSIX read/write or the Windows API), although
the library can be configured to use stdio instead as an option. On
most operating systems these "native" calls are faster.

>
> The only thing you can do is to implement your custom version of file
> stream which would generaly mean you will need to create your version
> of basic_filebuf class and new version of fstream class that uses that
> new version of basic_filebuf for I/O.
>
> In that implementation you will have to use CreateFile/CloseHandle and
> other respective windows API functions.
>
> As a starting point take a look at this article:
>
> http://incubator.apache.org/stdcxx/doc/stdlibug/39-2.html