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Subject: Re: [OMPI devel] XML stdout/stderr
From: Ralph Castain (rhc_at_[hidden])
Date: 2009-05-26 08:25:01


Yo Greg

I'm slow, but it did hit me that there may be a simpler solution after all.
I gather that the problem is that the user's output could have tags in it
that match our own, thus causing tag-confusion. True?

My concern is that our proposed solution generates pidgin-xml which could
only ever be translated by a specially written parser. Kinda makes xml a
little moot in ways.

What if we simply change the name of our tags to something ompi-specific? I
could tag things with <ompi-stdout>, for example. This would follow the
natural naming convention for internal variables, and would avoid any
conflicts unless the user were truly stupid - in which case, the onus would
be on them.

Would that resolve the problem?
Ralph

On Tue, May 26, 2009 at 5:42 AM, Ralph Castain <rhc_at_[hidden]> wrote:

>
>
> On Mon, May 25, 2009 at 9:10 AM, Greg Watson <g.watson_at_[hidden]>wrote:
>
>> Ralph,
>>
>> In life, nothing is ever easy...
>
>
> :-)
>
>
>>
>>
>> While the XML output is working well, I've come across an issue with
>> stdout/stderr. Unfortunately it's not just enough to wrap it in tags,
>> because it's possible that the output will contain XML formatting
>> information. There are two ways to get around this. The easiest is to wrap
>> the output in "<![CDATA[" and "]]>". This has the benefit of being
>> relatively easy, but will fail if the output contains the string "]]>". The
>> other way is to replace all instances of "&", "<", and ">" with "&amp;",
>> "&lt;", and "&gt;" respectively. This is safer, but requires more
>> processing.
>>
>> Thoughts?
>
>
> "Ick" immediately comes to mind, but is hardly helpful. :-)
>
> I am already doing some processing to deal with linefeeds in the middle of
> output streams, so adding these three special chars isn't -that- big a deal.
> I can have a test version for you in the next day or so (svn trunk) - I am
> on reduced hours while moving my son (driving across country).
>
> Let's give that a try and see if it resolves the problem...
>
>
>
>>
>>
>> Greg
>> _______________________________________________
>> devel mailing list
>> devel_at_[hidden]
>> http://www.open-mpi.org/mailman/listinfo.cgi/devel
>>
>
>