wstring to string in Danish?

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2 total messages Started by Niels Mon, 09 Jan 2006 13:33

#155

Author: Niels
Date: Mon, 09 Jan 2006 13:33

30 lines
1986 bytes

Hello,
Why does this function not translate the Danish characters "������" correctly from wide character to character format? Well, it does but only because I put the switch statement in there:

std::string StrNarrow(const std::wstring &source)
// From http://lists.boost.org/Archives/boost/2002/10/38018.php
{
  std::string result(source.size(), wchar_t(0));
  typedef std::ctype<wchar_t> ctype_t;
  const ctype_t& ct = std::use_facet<ctype_t>(std::locale("danish"));  // no effect!
  ct.narrow(source.data(), source.data() + source.size(),'@',&(*result.begin()));
  for (size_t i=0; i<source.size(); ++i)
    switch (source[i]){
      case L'�': result[i]='�'; break;
      case L'�': result[i]='�'; break;
      case L'�': result[i]='�'; break;
      case L'�': result[i]='�'; break;
      case L'�': result[i]='�'; break;
      case L'�': result[i]='�'; break;
      default: ;
    }
  return result;
}

Without the switch statement the call of StrNarrow(L"Bl�b�rgr�d") yield Bl@b@rgr@d. Incorrect!

With the switch statement the call of StrNarrow(L"Bl�b�rgr�d") yield "Bl�b�rgr�d". Correct!

I am using Builder 6.0.
Cheers, Niels

Re: wstring to string in Danish?

#156

Author: Darko Miletic
Date: Wed, 11 Jan 2006 01:48

17 lines
1809 bytes

Niels wrote:
> Hello,
> Why does this function not translate the Danish characters "������" correctly from wide character to character format? Well, it does but only because I put the switch statement in there:
> Without the switch statement the call of StrNarrow(L"Bl�b�rgr�d") yield Bl@b@rgr@d. Incorrect!
> 
> With the switch statement the call of StrNarrow(L"Bl�b�rgr�d") yield "Bl�b�rgr�d". Correct!
> 
> I am using Builder 6.0.

C++ Builder ships with two implementations of STL. One is "new" STLport
and another is rouge wave STL.

By default bcb 6 uses STLport. Just to be sure try to switch to older RW
STL and see what happens. You can do that by adding _USE_OLD_RW_STL
define to your project settings.

Darko

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