corrupt PACKAGES.gz?

wrote:

Bill,

thanks for reporting, this is currently true for all PACKAGES.gz files my
autobuilder is creating, will investigate.

Best,
Uwe



On 06.11.2015 18:54, William Dunlap wrote:

Is it just me, or did a corrupt PACKAGES.gz file get installed in the
bin/windows/contrib/3.2 directory of CRAN mirrors recently?  gzfile()
complains about it and Cygwin's gzip cannot decompress it.  I tried the
following

repos <- "https://cran.rstudio.com"
v <- "3.2"
pkgs.gz <- paste(sep="/", repos, "bin/windows/contrib", v, "PACKAGES.gz")

tfile <- tempfile(fileext=".gz")
download.file(pkgs.gz, dest=tfile)
r.gz <- readLines(gzfile(tfile, "r"))
tail(system(paste("c:\\cygwin\\bin\\gzip -d - ", shQuote(tfile)),
intern=TRUE))

and got

repos <- "https://cran.rstudio.com"

v <- "3.2"
pkgs.gz <- paste(sep="/", repos, "bin/windows/contrib", v, "PACKAGES.gz")

tfile <- tempfile(fileext=".gz")
download.file(pkgs.gz, dest=tfile)

trying URL 'https://cran.rstudio.com/bin/windows/contrib/3.2/PACKAGES.gz'
Content type 'application/x-gzip' length 188174 bytes (183 KB)
downloaded 183 KB

r.gz <- readLines(gzfile(tfile, "r"))

Warning message:
In readLines(gzfile(tfile, "r")) :
   seek on a gzfile connection returned an internal error

tail(system(paste("c:\\cygwin\\bin\\gzip -d - ", shQuote(tfile)),

intern=TRUE))
[1] ""                                    "gzip: stdin: unexpected end of
file"
Warning message:
running command 'c:\cygwin\bin\gzip -d -
  "C:\Users\wdunlap\AppData\Local\Temp\RtmpG42jk4\file2a201a9e4802.gz"'
had
status 1

R's gz code seems to recover from the bad seek, but Cygwin's gzip cannot.

pkgs <- paste(sep="/", repos, "bin/windows/contrib", v, "PACKAGES")

r <- readLines(url(pkgs, "rt"))
all.equal(r, r.gz)

[1] TRUE

I get the same results using the Spanish miror, https://ftp.cixug.es/CRAN


Bill Dunlap
TIBCO Software
wdunlap tibco.com

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