#!/bin/bash

# YAML-free: create repackaged YAML tarball without non-free content
# See https://bugzilla.redhat.com/show_bug.cgi?id=1813197
#     https://github.com/ingydotnet/yaml-pm/issues/219
#
# Usage: YAML-free YAML-version.tar.gz
# Creates: YAML-free-version.tar.gz

case $# in
1)	YAML_tarball="$1"
	;;
*)	echo "YAML-free: usage: YAML-free YAML-version.tar.gz" 1>&2
	exit 1
	;;
esac

if echo "$YAML_tarball" | grep --silent -x 'YAML-[1-9][0-9]*\.[0-9][0-9.]*\.tar\.gz'; then
	YAML_free_tarball=$(echo "$YAML_tarball" | sed -e 's|^YAML|YAML-free|')
	YAML_dirname=$(echo "$YAML_tarball" | sed -e 's|\.tar\.gz$||')
else
	echo "YAML-free: tarball $YAML_tarball does not meet expected naming" 1>&2
	exit 1
fi

echo "Creating $YAML_free_tarball from $YAML_tarball in directory $YAML_dirname"

echo "Ensuring directory $YAML_dirname does not already exist"
rm -rf "$YAML_dirname"

echo "Extracting $YAML_tarball"
tar xfz "$YAML_tarball"

echo "Removing non-free file t/load-slides.t"
rm "$YAML_dirname/t/load-slides.t"

echo "Removing reference to non-free file t/load-slides.t from MANIFEST"
sed -i -e '/^t\/load-slides.t/d' "$YAML_dirname/MANIFEST"

echo "Creating $YAML_free_tarball"
tar cfz "$YAML_free_tarball" "$YAML_dirname"

echo "Removing work directory $YAML_dirname"
rm -rf "$YAML_dirname"