#! /bin/sh
#
# Remove non-free files from the source of 'agg'.
#
# References:
#
# http://www.antigrain.com/license/index.html#toc0005
#

set -e

CWD=$(pwd)

VERSION="$1"

if [ "$VERSION" = "" ]; then
  echo "You need to specify the version of agg."
  exit 1;
fi

rm -rf agg-${VERSION}
tar xvf agg-${VERSION}.tar.?z*

cd agg-${VERSION} || exit 1;
  for file in gpc/* ; do
    if [ -f "$file" ]; then
      rm -v "$file"
    fi
  done
  rm -v include/agg_conv_gpc.h
  zcat ${CWD}/clean-rules.diff.gz | patch -p0 --verbose
cd - >/dev/null

rm -f agg-${VERSION}_libre.tar
tar cvf agg-${VERSION}_libre.tar agg-${VERSION}/

echo "Done."