R Under development (unstable) (2023-11-16 r85542 ucrt) -- "Unsuffered Consequences"
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> library("R.utils")
Loading required package: R.oo
Loading required package: R.methodsS3
R.methodsS3 v1.8.2 (2022-06-13 22:00:14 UTC) successfully loaded. See ?R.methodsS3 for help.
R.oo v1.25.0 (2022-06-12 02:20:02 UTC) successfully loaded. See ?R.oo for help.

Attaching package: 'R.oo'

The following object is masked from 'package:R.methodsS3':

    throw

The following objects are masked from 'package:methods':

    getClasses, getMethods

The following objects are masked from 'package:base':

    attach, detach, load, save

R.utils v2.12.3 successfully loaded. See ?R.utils for help.

Attaching package: 'R.utils'

The following object is masked from 'package:utils':

    timestamp

The following objects are masked from 'package:base':

    cat, commandArgs, getOption, isOpen, nullfile, parse, warnings

> 
> oopts <- options(warn=1)
> 
> message("*** compressPDF() ...")
*** compressPDF() ...
> 
> pathname <- file.path(R.home("doc"), "NEWS.pdf")
> if (file_test("-f", pathname)) {
+   tryCatch({
+     pathnameZ <- compressPDF(pathname)
+     print(pathnameZ)
+ 
+     pathnameZ <- compressPDF(pathname, skip=TRUE)
+     print(pathnameZ)
+ 
+     pathnameZ <- compressPDF(pathname, overwrite=TRUE)
+     print(pathnameZ)
+ 
+     file.remove(pathnameZ)
+     removeDirectory(dirname(pathnameZ))
+   }, error = function(ex) {
+     warning("TEST ERROR: ", ex$message)
+   })
+ }
[1] "compressedPDFs/NEWS.pdf"
attr(,"result")
D:/RCompile/recent/R/doc/NEWS.pdf           compressedPDFs/NEWS.pdf 
                           544458                            338207 
[1] "compressedPDFs/NEWS.pdf"
[1] "compressedPDFs/NEWS.pdf"
attr(,"result")
D:/RCompile/recent/R/doc/NEWS.pdf           compressedPDFs/NEWS.pdf 
                           544458                            338207 
> 
> message("*** compressPDF() ...DONE")
*** compressPDF() ...DONE
> 
> options(oopts)
> 
> proc.time()
   user  system elapsed 
   0.56    0.48    6.67