Re: [R] How to hiding code for a package

From: Gary Wong <wongg62_at_yahoo.com>
Date: Tue 02 Aug 2005 - 05:15:37 EST

> Dear Gary Wong:
>
> Are you trying to defeat the GNU License? If so,
> why not make it
> available as an S-Plus library? There, you don't
> have to provide the
> source; binary files will suffice.
>
> spencer graves
>
> bogdan romocea wrote:
>
> > There's something else you could try - since you
> can't hide the code,
> > obfuscate it. Hide the real thing in a large pile
> of useless,
> > complicated, awfully formatted code that would
> stop anyone except the
> > most desperate (including yourself, after a couple
> of weeks/months)
> > from trying to understand it. The best solution
> would be to compile
> > the code, but R is not there yet.
> >
> >
> >
> >>-----Original Message-----
> >>From: Prof Brian Ripley
> [mailto:ripley@stats.ox.ac.uk]
> >>Sent: Saturday, July 30, 2005 5:35 AM
> >>To: Gary Wong
> >>Cc: r-help@stat.math.ethz.ch
> >>Subject: Re: [R] How to hiding code for a package
> >>
> >>
> >>What you ask is impossible. For a function to be
> callable it
> >>has to be
> >>locatable and hence can be printed.
> >>
> >>One possibility is to have a namespace, and
> something like
> >>
> >>foo <- function(...) foo_internal(...)
> >>
> >>where foo is exported but foo_internal is not.
> Then foo_internal is
> >>hidden from casual inspection, but it can be
> listed by cognescenti.
> >>
> >>Why do you want to do this? Anyhone can read the
> source code of your
> >>package, and any function which can be called can
> be
> >>deparsed, possibly
> >>after jumping through a few hoops.
> >>
> >>On Sat, 30 Jul 2005, Gary Wong wrote:
> >>
> >>
> >>>Hey everyone,
> >>>
> >>>I have made a package and wish to release it but
> >>>before then I have a problem. I have a few
> functions
> >>>in this package written in R that I wish to hide
> such
> >>>that after installation, someone can use say the
> >>>function >foo(parameters = "") but cannot do
> >foo.
> >>>Typing foo should not show the source code or at
> least
> >>>not all of it. Is there a way to do this ? I have
> >>>searched the mailing list and used google, and
> have
> >>>found something like "[R] Hiding internal package
> >>>functions for the doc. pkg-internal.Rd" but this
> seems
> >>>different since it seems that the keyword
> internal
> >>>just hides the function from showing in the index
> and
> >>>hides documentation, not the function itself. Can

> >>>someone help? Thanks
> >>
> >>--
> >>Brian D. Ripley,
> ripley@stats.ox.ac.uk
> >>Professor of Applied Statistics,
> http://www.stats.ox.ac.uk/~ripley/
> >>University of Oxford, Tel: +44 1865
> 272861 (self)
> >>1 South Parks Road, +44 1865
> 272866 (PA)
> >>Oxford OX1 3TG, UK Fax: +44 1865
> 272595
> >>
> >>______________________________________________
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> >>
> >
> >
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> --
> Spencer Graves, PhD
> Senior Development Engineer
> PDF Solutions, Inc.
> 333 West San Carlos Street Suite 700
> San Jose, CA 95110, USA
>
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>
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https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Tue Aug 02 05:20:27 2005

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