rcsrev

#/bin/sh

topdir=`dirname $0`/..

extract_revision()
{
  revstr=$(svn info $1 | grep "^Last Changed Rev: ")
  if [ -z "$revstr" ]; then
    revstr=$(svn info $1 | grep "^Revision: ")
  fi
  echo $revstr | sed -e s/^[^0-9]*//
}

compute_rel_rev()
{
  rev_offset=`cat $topdir/include/csver.h.template | grep "//CS_RCSREV_OFFSET" | sed -e "s/[^0-9]*//"`
  base_rev=`extract_revision $topdir/include/csver.h.template`
  checkout_rev=`extract_revision $topdir`
  echo $(($checkout_rev-$base_rev+$rev_offset))
}

update_header()
{
  rev_offset=`cat $topdir/include/csver.h.template | grep "//CS_RCSREV_OFFSET" | sed -e "s/[^0-9]*//"`
  csver_rev=`extract_revision $topdir/include/csver.h`
  checkout_rev=`extract_revision $topdir`
  if [ $checkout_rev -gt $csver_rev ] ; then
    base_rev=`extract_revision $topdir/include/csver.h.template`
    rel_rev=$(($checkout_rev-$base_rev+$rev_offset))
    echo "/* ATTENTION: This file is generated from csver.h.template," > $topdir/include/csver.h
    echo "   make changes _there_ instead */" >> $topdir/include/csver.h
    cat $topdir/include/csver.h.template | sed -e "s/@CS_VERSION_RCSREV@/$rel_rev/" >> $topdir/include/csver.h
  fi
}

print_help()
{
  echo "Syntax:"
  echo "  $0 [print|update_header]"
}

action=$1
case $action in
print)
  compute_rel_rev
  ;;
update_header)
  update_header
  ;;
*)
  print_help
  exit 1
  ;;
esac