On 12-05-11 5:36 PM, David Sterratt wrote:
I maintain the geometry package, which integrates the Qhull C library
(http://qhull.org) into R. The Qhull function I hook into requires an
open FILE handle as one of its arguments. I had set this file handle to
stdout, but now R check NOTEs the presence of stdout, and the CRAN
maintainers asked me to get rid of these NOTEs.
Including the following defines means the checks are passed on CRAN:
#ifdef WIN32
extern FILE * R_Consolefile;
extern FILE * R_Outputfile;
#else
#include<Rinterface.h>
#fi
#undef stderr
#define stderr R_Consolefile
#undef stdout
#define stdout R_Outputfile
However, this does not work on Rgui.exe, when the above leads to a
crash. Looking at
http://svn.r-project.org/R/trunk/src/gnuwin32/system.c
it would appear that R_Consolefile and R_Outputfile only point to open
files when CharacterMode == RTerm, not in GUI mode.
Therefore my question is, are there any replacements for stdout and
stderr that work across all versions of R?
I'm pretty sure the answer is "no". What you can do is have your
initialization code open a new handle (pointing to something that is not
stdout, e.g. a file), and then pass that to the Qhull function.
Duncan Murdoch
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