R devel - Dec 2007 - readBin differences on Windows and Linux/mac

I have been trying to use the gunzip function in the R.utils package.  It
opens a connection to a gzfile, uses readBin to read from that connection,
and then uses writeBin to write out the raw data to a new file.  This works
as expected under linux/mac, but under Windows, I get:

Error in readBin(inn, what= raw(0), size = 1, n=BFR.SIZE)  :
  negative length vectors are not allowed

A simple traceback shows the error in readBin.  I wouldn't be surprised if
this is a programming issue not located in readBin, but I am confused about
the difference in behaviors on Windows versus mac/linux.  Any insight into
what I can do to remedy the issue and have a cross-platform gunzip()?

Thanks,
Sean

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Can you give a reproducible example, pelase?

Uwe Ligges


Sean Davis wrote:
> I have been trying to use the gunzip function in the R.utils package.  It
> opens a connection to a gzfile, uses readBin to read from that connection,
> and then uses writeBin to write out the raw data to a new file.  This works
> as expected under linux/mac, but under Windows, I get:
> 
> Error in readBin(inn, what= raw(0), size = 1, n=BFR.SIZE)  :
>   negative length vectors are not allowed
> 
> A simple traceback shows the error in readBin.  I wouldn't be surprised
if
> this is a programming issue not located in readBin, but I am confused about
> the difference in behaviors on Windows versus mac/linux.  Any insight into
> what I can do to remedy the issue and have a cross-platform gunzip()?
> 
> Thanks,
> Sean
> 
> 	[[alternative HTML version deleted]]
> 
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