Re: [boost] [locale] [filesystem] Windows local 8 bit encoding

Subject: Re: [boost] [locale] [filesystem] Windows local 8 bit encoding
From: Thiel, Bjoern (bjoern.thiel_at_[hidden])
Date: 2012-11-01 12:08:21

________________________________________
From: boost-bounces_at_[hidden] [boost-bounces_at_[hidden]] on behalf of Artyom Beilis [artyomtnk_at_[hidden]]
Sent: Thursday, November 01, 2012 15:59
To: boost_at_[hidden]
Subject: Re: [boost] [locale] [filesystem] Windows local 8 bit encoding

> >> Using Boost.Locale you can convert to locale encoding of a given
> >> std::locale() object generated with Boost.Locale.
> >>
> >> boost::locale::generator allows to select legacy "ANSI" encoding
> >> instead of UTF-8 to be default upon creation of the locale object that
> >> corresponds to the system locale.
> >>
> >> This object you can use with to_utf and from_utf functions.
> >
> >Unfortunately that does not work under Microsoft Windows as 
> >  generator locale_generator ;
> >  locale_generator.use_ansi_encoding( true ) ;
> >  std::locale const current_locale = locale_generator.generate( name ) ;
> >needs a name. 
> >
>
> Similar to creating std::locale("") the generation 
> locale_generator.generate("") gives the expected result, i.e.
> system default locale.

Unfortunately under Microsoft Windows this only gives the 'hardwired' 
"UTF-8" encoding:

  void prepare_data()
  {
        ...
    if(locale_id_.empty()) {
      real_id_ = util::get_system_locale(true); // always UTF-8
      ...
    }
        ...
  }

where util::get_system_locale(false) would at least do part of the mapping 
from codepage to encoding (see my initial posting).

Best regards

Bjoern.