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

From: bogdan romocea <br44114_at_gmail.com>
Date: Tue 02 Aug 2005 - 01:55:29 EST


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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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 02:01:30 2005

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