Re: [Boost-users] Boost.Log: Set formatter for named_scope attr.

Subject: Re: [Boost-users] Boost.Log: Set formatter for named_scope attr.
From: Víctor Yo (rcpoetics_at_[hidden])
Date: 2013-11-14 08:41:40

I have some doubts about your question: are you using the named_acope 
attribute yet? If that is the case, just needs to include some other tags 
like the next example

<<boost::log::expressions::format_named_scope(_scope, 
> boost::log::keywords::format =  "%n (%f : %l)")
>

This line would print something like: "void main() (main.cpp : 25)"

If that is not the case, please, could you be more specific about how did 
you set your logger? I have been struggling the past weeks with that and I 
may help you. Best regards! 

El lunes, 30 de septiembre de 2013 14:01:29 UTC+2, David Puffer escribió:
>
> Hi, 
>
> Being new to Boost.Log (and Boost in general) I have spent the last few 
> days trying to implement Boost.Log - which 
> Is working fairly well by now. 
> However - I encountered one problem that I've not been able to solve by 
> now, although it seems to me quite trivial: 
>
> I have successfully registered the "named_scope" attribute and I am 
> populating its value by a call to BOOST_LOG_FUNCTION. 
> This works well and I can see the function-name in my log-output. 
> However - I also want the line-number and the file-name, and discovered 
> that there's a possibility to set the output-format of the 
> "named_scope" attribute (which already incorporates file-name and 
> line-number info) like so: 
>
> #include <boost/log/expressions/formatters/named_scope.hpp> 
>
> sink->set_formatter(expr::stream << expr::format_named_scope("Scopes", 
> "%n")); 
>
> As documented here: 
>
>
> http://www.boost.org/doc/libs/1_54_0/libs/log/doc/html/log/detailed/expressions.html#log.detailed.expressions.formatters.named_scope 
>
> I just don't seem to find any way to get to my sink - which is configured 
> in a settings-file and evaluated by a call to the init_from_stream()function. 
>
> Is there any way to query for all the sinks - or get a sink by name? How 
> is one supposed to set a sink formatter for a sink which was generated by 
> the library 
> and not the user? 
> Or is there a way to specify the output-format for named attributes via a 
> settings-file as well? As far as I can see it's only possible to format the 
> output of a log record as a 
> whole - but not single attributes. 
>
> Also: Is it correct, that the above function will only set the format for 
> the "Scopes" attribute - which means I could call this function repeatedly 
> for lets say the "TimeStamp" attribute 
> as well? 
>
> Best regards, 
>
> David 
>