[boost] Re: indentation on streams

From: Reece Dunn (msclrhd_at_[hidden])
Date: 2003-04-22 07:24:31

>Hi Reece,
>I looked at it.
>I do like your solution better. Did you submit it for a formal review?

Not yet. How do I go about doing this?

>However, what do you think of my proposal?

I have not had chance to look at it yet. I am also interested in 
logging/tracing libraries and have used my indentation code in a basic trace 
facility of my own.

>What I want is something as transparent as possible, since usually streams
>are passed as std::ostream& arguments.

My code does not allow for you to pass a std::ostream & to the constructor, 
using something like:

   // will *not* work
   boost::indentor< std::ostream > ind( os );

In order to get this to work, I would need to add a constructor to indentor 
that will accept a reference to a std::ostream, or std::basic_stream and 
pass that to the parent class.

It would also need a stream wrapper class, one that takes a stream reference 
and provides a stream-like interface to it.

Then, you could do something like:

   boost::indentor
   <
      boost::ostream_wrapper< std::ostream >
   > ind( os ); // not supported yet

Is there a set of classes of the form
   [i/o/io]stream_wrapper
available in boost?

Regards,
-rhd-

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