# check parameters
if [ "x$2" = x -o ! -d "$1" -o ! -d "$2" ]; then
echo "Syntax : $0 orig-src-dir modified-src-dir [patch-dir]"
exit 1
fi
# get parameters
ORIG_DIR=$1
MOD_DIR=$2
if [ ".$3" = "." -o ! -d "$3" ]; then
PATCH_DIR=`pwd`
else
PATCH_DIR=$3
fi
PATCH_NAME=`whoami`-`date +%y%m%d`.patch
INIT_DIR=`pwd`
# print startup message
echo "Creating patch :"
echo " original dir = $ORIG_DIR"
echo " modified dir = $MOD_DIR"
echo " patch dir = $PATCH_DIR"
echo " patch name = $PATCH_NAME"
echo "The patch will be gzipped and uuencoded."
echo