[ESS] Install experiences

[Frede Aakmann Tøgersen]

Hi
To follow up my previous mail I just couldn't resist trying to do some lisp coding. So here is what I could come up with.


(setq reg-key "hklm\\software\\wow6432Node\\R-core\\R")

(defun R-versions (reg-key)
  (setq all (w32reg-read-key reg-key))

  (setq versions (nth 2 all))

  (dolist (key versions)
    (setq loop-key (concat reg-key "\\" key))
    (setq tmp (cddr (car (nth 1 (w32reg-read-key loop-key)))))
    (add-to-list 'result tmp))

  (nreverse result)
)

(setq Rversions (R-versions reg-key))

Now

Rversions's value is (("C:\\Programmer\\R\\R-3.0.0")
 ("C:\\Programmer\\R\\R-devel")
 ("C:\\Programmer\\R\\R-3.0.2")
 ("C:\\Program Files\\R\\R-3.0.1"))

I will leave profiling to an experienced lisp coder ;-)

Yours sincerely / Med venlig hilsen


Frede Aakmann Tøgersen
Specialist, M.Sc., Ph.D.
Plant Performance & Modeling

Technology & Service Solutions
T +45 9730 5135
M +45 2547 6050
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> -----Original Message-----
> From: ess-help-bounces at r-project.org [mailto:ess-help-bounces at r-
> project.org] On Behalf Of Vitalie Spinu
> Sent: 28. november 2013 03:52
> To: Paul Johnson
> Cc: Richard M. Heiberger; ess-help at r-project.org
> Subject: Re: [ESS] Install experiences
> 
>  >>> Paul Johnson on Wed, 27 Nov 2013 19:54:29 -0600 wrote:
> 
> 
> [...]
> 
>  > Concerning reading the registry, I expect that Gabor Grothendieck knows
> how
>  > to read the registry to get the R location. We could learn how this is done
>  > from the source code for NPPTOR and/or RStudio.  They both manage it. I
>  > notice that RStudio seems to get it right, almost invariably, while NPPTOR
>  > is only about 70% right.
> 
> 
> It looks like we are talking more than doing on this issue for 2 years
> already. It is just one system call, isn't it?
> 
> It is really unfortunate that almost all ESS core developers are Windows
> illiterates, but what can we do about it?
> 
> So please, could someone with bare minimum of knowledge of windows batch
> scripting look into Gabor's script at
> https://batchfiles.googlecode.com/svn/trunk/R.bat and isolate the system
> call that retrieves R location from the registry?
> 
> Let's solve this issue once and forever.
> 
>    Vitalie
> 
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