lic.sh

#!/bin/bash

set -o pipefail

PREREQS=(curl fmt jq)

usage() {
 cat <<USAGE
Usage: ${0##*/} [-h] [ID]
Generate a LICENSE.txt file.

    -h  This message
    ID  The SPDX license identifier (default LGPL-3.0-or-later)

A list of available identifiers is available at <https://spdx.org/licenses/>

USAGE
}

# Make sure prereq commands are available
for cmd in "${PREREQS[@]}"; do
  if ! command -v "${cmd}" &>/dev/null; then
    echo "${cmd} command not found"
    exit 1
  fi
done

# Parse options
while getopts "h" opt; do
  case ${opt} in
    h) usage && exit 0;;
    *) usage && exit 1;;
  esac
done
shift $((OPTIND - 1))

# Get the license
curl -s "https://spdx.org/licenses/${1:-LGPL-3.0-or-later}.json" \
  | jq -r '.licenseText' \
  | fmt