wifstream & locale

[koara]

Hello all,

I needed to read contents of an UTF8 encoded file in C++ (gcc version
3.3.5 on Linux). I decided to do it the C++ way, using streams:

-------------
std::locale utf8loc("en_US.utf8");
std::wifstream ifs("smthg");
ifs.imbue(utf8loc);
std::wstring item;

while (ifs >> item) {
here
}

------------

but the inner block ("here") never gets executed. I tried searching
around the web and my head spins, surely doing such mundane,
straightforward task cannot be that complicated in C++? What am I
doing wrong please? What should I test for, look out for?

Cheers.

To narrow down my problem:
* I don't want to use any non-standard functions, libraries etc.
* the input file is in UTF8, I want to read (parts of) its contents as
wstring

---------------
$ locale -a
C
POSIX
en_GB.utf8
en_US.utf8

 

[Christopher]

Hello all,

I needed to read contents of an UTF8 encoded file in C++ (gcc version
3.3.5 on Linux). I decided to do it the C++ way, using streams:

-------------
std::locale utf8loc("en_US.utf8");
std::wifstream ifs("smthg");
ifs.imbue(utf8loc);
std::wstring item;

while (ifs >> item) {
here
}

------------

but the inner block ("here") never gets executed. I tried searching
around the web and my head spins, surely doing such mundane,
straightforward task cannot be that complicated in C++? What am I
doing wrong please? What should I test for, look out for?

Cheers.

To narrow down my problem:
* I don't want to use any non-standard functions, libraries etc.
* the input file is in UTF8, I want to read (parts of) its contents as
wstring

---------------
$ locale -a
C
POSIX
en_GB.utf8
en_US.utf8

Mayhaps the file "smthg" does not contain text that is convertable to
a wstring? or no text at all?
What's in the file? Also did you ever check if it actually got opened?
Is it in the proper directory?

 

[koara]

Mayhaps the file "smthg" does not contain text that is convertable to
a wstring?

No. It contains text convertible to wstring.

What's in the file? Also did you ever check if it actually got opened?

Yes I did, problem is not in file opening.
File contains text with national characters (cz, de).

Cheers.