Re: [boost] boost filesystem path as utf-8?

Subject: Re: [boost] boost filesystem path as utf-8?
From: Beman Dawes (bdawes_at_[hidden])
Date: 2012-01-23 18:41:32

On Mon, Jan 23, 2012 at 5:15 PM, Emil Dotchevski
<emildotchevski_at_[hidden]> wrote:
>
>
> How exactly do I imbue UTF-8 codecvt in a path? I Googled around and
> couldn't find anything.

There are two approaches:

* If you always want all class path arguments and returned values with
a value type of char to be treated as being UTF-8 encoded, and aren't
worried about changing a potentially dangerous global, then do this:

    #include <boost/filesystem/detail/utf8_codecvt_facet.hpp>
    ...
    std::locale global_loc = std::locale();
    std::locale loc(global_loc, new
boost::filesystem::detail::utf8_codecvt_facet);
    boost::filesystem::path::imbue(loc);

* If you only want one specific path to treat its narrow character
arguments and returns as UTF-8, do this:

    boost::filesystem::detail::utf8_codecvt_facet utf8;
    ...
    boost::filesystem::path p;
    ...
    p.assign(u8"...", utf8);  // many other path functions can take a
codecvt argument, too

By the way, you can use a UTF-8 codecvt facet from someone else if you prefer.

HTH,

--Beman