Re: Can't write ustring to std::cout [Was: Re: string problems]

[Philipp Klaus Krause <pkk spth de>]

Murray Cumming schrieb:

>> std::string linetmp;
>> std::getline(source, linetmp);
>> line = linetmp;
>> linetmp = line;
>> std::cout << linetmp << "\n";
>>
>> works,
>>
>> std::string linetmp;
>> std::getline(source, linetmp);
>> line = linetmp;
>> linetmp = line;
>> std::cout << line << "\n";
>>
>> still doesn't.
> 
> I believe that this is relevant:
> http://www.gtkmm.org/docs/glibmm-2.4/docs/reference/html/classGlib_1_1ustring.html#_details
> (see "Glib::ustring and stream input/output")
> 
> I think you need to know what encoding your string has, and convert it
> when appropriate. You should also catch exceptions for when this fails.
> 

std::string linetmp;
std::getline(source, linetmp);
line = Glib::locale_to_utf8(linetmp);
std::cout << line << "\n";

fails in the call to Glib::locale_to_utf8.
here's the output of locale:
LANG=de_DE.UTF-8
LC_CTYPE="de_DE.UTF-8"
LC_NUMERIC="de_DE.UTF-8"
LC_TIME="de_DE.UTF-8"
LC_COLLATE="de_DE.UTF-8"
LC_MONETARY="de_DE.UTF-8"
LC_MESSAGES="de_DE.UTF-8"
LC_PAPER="de_DE.UTF-8"
LC_NAME="de_DE.UTF-8"
LC_ADDRESS="de_DE.UTF-8"
LC_TELEPHONE="de_DE.UTF-8"
LC_MEASUREMENT="de_DE.UTF-8"
LC_IDENTIFICATION="de_DE.UTF-8"
LC_ALL=

So everything should be UTF-8 (I can display the file with the
problematic line ";add	𝔐, v1, v2" with cat, edit it in gedit, etc).

Philipp