Re: [Boost-users] Boost 1.49 Locale Conversion failed

10 Jul 2012

      The locale name should be "en_US.UTF-8" or "ru_RU.UTF-8", the default UTF-8 locale is for
default system locale "".

When you set locale as "en" it assumes that encoding (as not specified) is US-ASCII and conversion fails.

Artyom Beilis
--------------
CppCMS - C++ Web Framework:   http://cppcms.com/
CppDB - C++ SQL Connectivity: http://cppcms.com/sql/cppdb/
...
________________________________
From: NtVisigoth 
To: boost-users@lists.boost.org 
Sent: Tuesday, July 10, 2012 12:36 PM
Subject: [Boost-users] Boost 1.49 Locale Conversion failed
Hello, everyone!
I have already answred here: http://lists.boost.org/boost-users/2012/07/75097.php
But previous latter badly typed.
When using boost::locale with the russian language of the string in UTF-8 encoding I get an error while getting the locale.
An exception with the message e.what(): "Conversion failed" is thrown
My code is not very different from that in the examples:
#define  TR(S)  boost::locale::translate(S).str()
const std::string strDefaultLangId( "en" );
int main( int argc, char * argv[] )
{
    using namespace std;
    using namespace boost::locale;
    int exitCode = EXIT_SUCCESS;
    try
    {
        generator gen;
        gen.add_messages_path("g:\\source\\boost_locale\\languages\\");
        gen.add_messages_domain("messages");
        std::string language( argc == 2 ? argv[1] : strDefaultLangId.c_str() );
        std::locale loc = gen( language );
        locale::global( loc );
        std::wstring s = TR(L"hello world");
        wcout << s << endl;
    }
    catch( exception& e )
    {
        cout << "Error : " << e.what() << endl;
        exitCode = EXIT_FAILURE;
    }
    catch( ... )
    {
        cout << "Unknown error" << endl;
        exitCode = EXIT_FAILURE;
    }
    return exitCode;
}
The path to the file with the russian language: "g:\source\boost_locale\languages\ru\LC_MESSAGES\messages.mo"
What could be wrong?
* Is it necessary to use the backends?
* Is it yet necessary to call imbue on the stream? But I'd like avoid it because I am going to write the log using glog. 
Compillers : Microsoft Visual Studio 2008 and 2010 
Boost version : 1.49
_______________________________________________
Boost-users mailing list
Boost-users@lists.boost.org
http://lists.boost.org/mailman/listinfo.cgi/boost-users