#!/bin/sh

set -o nounset

set -o errexit

FORGEURL='https://github.com/pdfminer/pdfminer.six'

print_help()

{

	cat <

Usage: $1 VERSION

Generate a source archive for pdfminer.six with questionably-licensed sample

PDFs removed. The result will be named pdfminer.six-\${VERSION}-filtered.tar.xz

and will be written into the current working directory.

EOF

}

if [ "$#" != '1' ]

then

	exec 1>&2

	print_help "${0}"

	exit 1

elif [ "${1-}" = '-h' ] || [ "${1-}" = '--help' ]

then

	print_help "${0}"

	exit 0

fi

VERSION="${1}"

SOURCE0="${FORGEURL}/archive/${VERSION}/pdfminer.six-${VERSION}.tar.gz"

TARNAME="$(basename "${SOURCE0}")"

TARDIR="$(basename "${SOURCE0}" '.tar.gz')"

NEWTAR="${TARDIR}-filtered.tar.xz"

SAVEDIR="${PWD}"

XDIR="$(mktemp -d)"

trap "rm -rvf '${XDIR}'" INT TERM EXIT

cd "${XDIR}"

curl -L -O "${SOURCE0}"

tar -xzvf "${TARNAME}"

rm -rvf "${TARDIR}/samples"

if [ "$(find . -type d -name 'nonfree' | wc -l)" != '0' ]

then

	echo 'ERROR: did not properly remove problematic content' 1>&2

	exit 1

fi

tar -cv "${TARDIR}/" | xz -9e > "${NEWTAR}"

cd "${SAVEDIR}"

mv -v "${XDIR}/${NEWTAR}" .