Re: [R] tar()/untar() argument symmetry

[Roebuck,Paul L]

On 10/18/16, 12:52 PM, "Duncan Murdoch"  wrote:

>On 18/10/2016 12:38 PM, Roebuck,Paul L wrote:
>> Any reason untar() has an "exdir" argument (the equivalent of "tar -C"),
>> but tar() does not?
>
>Because you can specify the source directory in the files argument using
>list.files().  There's no need to duplicate that in tar().

But that solution introduces (undesired) intermediate directory paths
into the tar archive.


Any other thoughts outside using something like below:

stopifnot(dir.exists(local))
savedir <- ""
tryCatch({
savedir <- setwd(local)
tar(Š)
  },
  finally = setwd(savedir))

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Re: [R] tar()/untar() argument symmetry

[Duncan Murdoch]

On 18/10/2016 12:38 PM, Roebuck,Paul L wrote:

Any reason untar() has an "exdir" argument (the equivalent of "tar -C"),
but tar() does not?


Because you can specify the source directory in the files argument using 
list.files().  There's no need to duplicate that in tar().


Duncan Murdoch

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