#! /bin/sh
#
# ${RHOME}/tools/rsync-recommended


: ${CRAN_RSYNC='cran.r-project.org::CRAN'}

TOOLS_DIR=`echo ${0} | sed 's%/[^/][^/]*$%%'`
(cd "${TOOLS_DIR}"/..
  version=`cut -f1 -d' ' VERSION`
  PKGS=`grep '^R_PKGS_RECOMMENDED *=' Makeconf.in | sed 's/.*=//'`
  cd src/library/Recommended

  ## The purpose of the rsync options is to get the timestamps on the
  ## downloaded files to reflect time of download.
  ## We can't use -t because then we could download a changed file that 
  ## was older the last build and therefore would not be installed. 
  ## The -c (checksum first) is necessary because otherwise all the 
  ## files get their mtime changed whether updated or not.
  ## -C prevents --delete from removing the CVS subdirectory.

  rsync -rcIzC --delete \
    --exclude=Makefile.in --exclude=Makefile --exclude=.cvsignore \
    --include=*.tar.gz \
    "${CRAN_RSYNC}"/src/contrib/${version}/Recommended/ .

  ## Link each package to a simplified name so that Make has an
  ## easier time. Notice that we cannot use pkgname.tgz because of
  ## the way R CMD INSTALL works, but pkgname_tgz works OK.
  ## Notice that as far as Make is concerned, the symlinks have the same
  ## timestamp as the file they point to.

  for i in ${PKGS} ; do
    ln -s $i*.tar.gz ${i}_tgz
  done
)