From gsee000 at gmail.com  Sun Jun 10 04:54:38 2012
From: gsee000 at gmail.com (G See)
Date: Sat, 9 Jun 2012 21:54:38 -0500
Subject: [Rd] Convert "\" to "/"?
In-Reply-To: <4FD3FAF2.8020304@prodsyse.com>
References: <4FD3FAF2.8020304@prodsyse.com>
Message-ID: <CA+xi=qa8h+MFZ1RAADYW-eXFTuaRVbcHcAo32KMBKzGnp6fAsQ@mail.gmail.com>

One work around is to comment out the lines that `scan` reads.

    (x <- back2ForwardSlash())
    #c:\Users\
    all.equal(x, '#c:/Users/')

Or, you could pass a text arg through the dots

    (x <- back2ForwardSlash(text="c:\\\users"))
    all.equal(x, 'c:/users')

HTH,
Garrett

On Sat, Jun 9, 2012 at 8:40 PM, Spencer Graves
<spencer.graves at prodsyse.com> wrote:
> Hello, All:
>
>
> ? ? ? ? ?I have for years copied an address like "C:\Program
> Files\R\R-2.15.0\library\MASS\scripts" from Windows Explorer into R, then
> manually replaced "\" with "/". ?I have a function to automate this added to
> the development version of "sos". ?However, it generates a warning in "R CMD
> check" ("parse error: ?unexpected input"). ?I have so far not found a way to
> eliminate the warning without wrapping examples in "\dontrun" or making the
> examples hard to understand; ?neither of these alternatives are acceptable.
>
>
> ? ? ? ? ?The following is my current solution:
>
>
> back2ForwardSlash <- function(nmax=1, what=character(), sep='\n', ...){
> ?x2 <- scan(what=what, nmax=nmax, sep=sep, ...)
> ?x. <- gsub('\\', '/', x2, fixed = TRUE)
> }
> (x <- back2ForwardSlash())
> c:\Users\
> all.equal(x, 'c:/Users/')
> # TRUE
> x2. <- back2ForwardSlash(2)
> c:\u\a b\n o
> d:/pqr/
> all.equal(x2., c('c:/u/a b/n o', 'd:/pqr/'))
> # TRUE
>
>
> QUESTION: ?Might anyone have a better solution and / or simple, clear
> examples that do not generate a warning in "R CMD check"?
>
>
> NOTE: ?In case you want to try this development version of "sos" including
> this function, it is available via "svn checkout
> svn://svn.r-forge.r-project.org/svnroot/rsitesearch/" or
> install.packages('sos', repos = "http://R-Forge.R-project.org").
>
>
> ? ? ? ? ?Thanks,
> ? ? ? ? ?Spencer
>
>
> p.s. ?Prof. Ripley provided a way to do this on R-help several years ago.
> ?Unfortunately, I've been unable to find his solution.
>
> ______________________________________________
> R-devel at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-devel



[Rd] Convert "\" to "/"?
G See