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RE: Re[2]: Unicode Logging questions: msg#00011

apache.logging.log4cxx.user

Subject: RE: Re[2]: Unicode Logging questions

Thanks a lot for your help.
This answers a few questions, and gives new ideas;)

At the moment I have Logging turned off by redefining the macros.
I think I will try to wrap the logstream isid a macro and see what happen.

Beside:
Thanks for doing such a great work with log4cxx.
I really like it - and its seems to get even better ;)

Best regards
ML

> -----Original Message-----
> From: Curt Arnold [mailto:carnold@xxxxxxxxxx]
> Sent: Mittwoch, 02. Februar 2005 07:43
> To: Log4CXX User
> Subject: Re: Re[2]: Unicode Logging questions
>
>
> On Feb 1, 2005, at 11:54 PM, Martin Lechner wrote:
>
> > Hello Curt,
> >
> > Thanks for the info and tips.
> > I can live with the \u representation for the moment, when
> I know that
> > there will be readable output in the future.
> >
> > But I have another small question:
> > I am currently replacing in an application std::string with
> > std::wstring Before it was possible to log in streams, but with
> > wstrings its not possible at the moment.
> >
> > works: LOG4CXX_DEBUG(loggerPtr_, "hello" << someString << 5
> ); works
> > not: LOG4CXX_DEBUG(loggerPtr_, L"hello" << someWtring << 5 );
> >
> > Is this planned or do I have to use other ways to log things like
> > this?
> >
>
> With the current CVS HEAD, neither is acceptable The log4cxx
> 0.9.7 macros were forced to create a stream to support this
> syntax even if the argument was just a char* or std::string.
>
> The current CVS's provides a stream wrapper for logging in
> <log4cxx/stream.h>. The logstream class provides STL
> stream-like semantics on top of a logger. The implementation
> supports short-circuiting expressions when the level is not
> enabled. Due to the non-atomic nature of stream operations,
> logstream is not thread-safe (and can't be made so), so do
> not share it between threads. The expected usage pattern is
> to have a static LoggerPtr as a class member and logstream
> wrappers to be created on method entry. In addition, you can
> insert either wchar_t or char strings into logstream, it will
> transcode on the fly.
>
> There is a sample in examples/stream.cpp and unit tests in
> tests/src/streamtestcase.cpp. Your code fragment would
> should look something like:
>
> #include <log4cxx/stream.h>
>
>
> class MyClass {
> private static log4cxx::LoggerPtr
> logger(log4cxx::Logger::getLogger("MyClass"));
>
> public doSomething() {
> log4cxx::logstream logstream(logger,
> log4cxx::Level::DEBUG);
>
> logstream << L"hello" << someWstring << 5 <<
> LOG4CXX_ENDMSG;
>
> }
> }
>
> There has been a substantial amount of debate on the topic
> and still profoundly different opinions on the desirable
> semantics which I do not think can be reconciled in one
> implementation. I don't expect that the semantics of
> log4cxx::logstream will change, but am open to implementation
> improvements and am willing to consider including other
> implementations, but I think we need to gather more
> experience and have more platforms to test before doing that.
> You may want to review the list dev archives and/or the Jira entry
> (http://issues.apache.org/jira/browse/LOGCXX-18)
>
>



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