Re: wstring to ostream

From:

"Igor Tandetnik" <itandetnik@mvps.org>

Newsgroups:

microsoft.public.vc.stl

Date:

Wed, 20 Dec 2006 08:25:29 -0500

Message-ID:

<uyIpSpDJHHA.320@TK2MSFTNGP06.phx.gbl>

"Howie Meier" <howieh@_web.de> wrote in message
news:m0dio2h23l8ff01799c766bgb588i9nota@4ax.com

i have a simply code to write a string to an ostream:

bool CXXStreamTools::WriteString(ostream &os,string Value)
{
try
{
long len = Value.size()+1;
os.write(reinterpret_cast<char *> (&len),sizeof(len));
os.write(reinterpret_cast<char *> ((char
*)Value.c_str()),len);

}
catch(...)
{
return false;
}
return true;
}

it works fine.

How can i write (or read) a wstring instead of a string to the same
ostream ?

Just change the first line to

long len = (Value.size()+1) * sizeof(wstring::value_type);

If you are actually going to write a mix of narrow and wide strings to
the same stream, it's not clear how you plan to figure out which is
which when you read them back.
--
With best wishes,
Igor Tandetnik

With sufficient thrust, pigs fly just fine. However, this is not
necessarily a good idea. It is hard to be sure where they are going to
land, and it could be dangerous sitting under them as they fly
overhead. -- RFC 1925