#!/bin/sh
# How to make a distribution tarfile.
#
# $1 is the name of the program.
# $2 is the version number.
# Remaining args are files to tar.
# Optional argument of ~+notar" means don't create the actual tar file,
# just create the symlinked directory.

tar_inhibited=""
if [ "$1" = "+notar" ]; then
  tar_inhibited=yes
  shift
fi

PROGRAM=$1
VERSION=$2

shift; shift

if [ "$PROGRAM" = "" -o "$VERSION" = "" ]; then
  echo "Usage: mktarfile [+notar] <progname> <version> <file ...>"
  exit 2;
fi

TARFILE=$PROGRAM.tar
TARDIR=$PROGRAM-$VERSION

# Delete the tarfile if we are to create it.
if [ ! "tar_inhibited" ]; then
  rm -rf $TARFILE
fi

# Delete the destination directory if it already exists.
rm -rf $TARDIR

# Make the destination directory.
echo "Making directory $TARDIR..."
mkdir $TARDIR

topdir=`pwd`
where_I_am=$TARDIR

trap "cd $topdir" 3

for i in $*; do
  filename=$i
  while [ "$filename" ]; do
    remainder=`echo $filename | sed 's@[-_a-zA-Z~0-9.]*/@@'`
    dir=`echo $filename | sed "s@$remainder@@" | sed "s@/@@"`
    if [ "$dir" ]; then
       if [ ! -d $where_I_am/$dir ]; then
	  echo "Making directory $where_I_am/$dir..."
	  mkdir $where_I_am/$dir
       fi
       cd $where_I_am/$dir; where_I_am=`pwd`
       filename=$remainder
    else
       break
    fi
  done
  cd $topdir; where_I_am=$TARDIR
  ln -s $topdir/$i $TARDIR/$i
done

if [ ! "$tar_inhibited" ]; then
  tar -chf $TARFILE $TARDIR
  rm -rf $TARDIR
fi

exit 0