#!/bin/sh
#
# This file is part of the ProteanOS Archive Manager.
#
# The ProteanOS Archive Manager is free software: you can redistribute
# it and/or modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation, either version 3 of the
# License, or (at your option) any later version.
#
# The ProteanOS Archive Manager is distributed in the hope that it
# will be useful, but WITHOUT ANY WARRANTY; without even the implied
# warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
# See the GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with the ProteanOS Archive Manager.  If not, see
# <http://www.gnu.org/licenses/>.

set -eu

cat >license-notice.txt <<-'EOF'
	# This file is part of the ProteanOS Archive Manager.
	#
	# The ProteanOS Archive Manager is free software: you can redistribute
	# it and/or modify it under the terms of the GNU General Public License
	# as published by the Free Software Foundation, either version 3 of the
	# License, or (at your option) any later version.
	#
	# The ProteanOS Archive Manager is distributed in the hope that it
	# will be useful, but WITHOUT ANY WARRANTY; without even the implied
	# warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
	# See the GNU General Public License for more details.
	#
	# You should have received a copy of the GNU General Public License
	# along with the ProteanOS Archive Manager.  If not, see
	# <http://www.gnu.org/licenses/>.
	EOF

if [ ${#} -eq 0 ]; then
	printf 'Usage: %s <file>...\n' "${0}" >&2
fi

gnu_lic_url='<http:\/\/www.gnu.org\/licenses\/>'
for file in "${@}"; do
	sed '
		/This program is free software:/,/'"${gnu_lic_url}"'/{
			d
			r license-notice.txt
		}
		' "${file}" >"${file}~"
	mv "${file}~" "${file}"
done

rm -f license-notice.txt