montag-docker.sh

#!/usr/bin/env bash

IMAGE="${MONTAG_IMAGE:-oci.guero.org/montag:latest}"
ENGINE="${CONTAINER_ENGINE:-docker}"

ENCODING="utf-8"
while getopts i:o:s:e: opts; do
   case ${opts} in
      i) IN_FILE=${OPTARG} ;;
      o) OUT_FILE=${OPTARG} ;;
      s) SWEARS_FILE=${OPTARG} ;;
      e) ENCODING=${OPTARG} ;;
   esac
done

if [[ -z "${IN_FILE}" ]] || [[ -z "${OUT_FILE}" ]] ; then
  echo "usage:"
  echo "  montag-docker.sh -i <IN_FILE> -o <OUT_FILE> [-s <PROFANITY_FILE> -e <ENCODING>]"
  exit 1
elif [[ ! -f "${IN_FILE}" ]]; then
  echo "usage:"
  echo "  montag-docker.sh -i <IN_FILE> -o <OUT_FILE> [-s <PROFANITY_FILE> -e <ENCODING>]"
  echo ""
  echo "${IN_FILE} does not exist!"
  exit 1
fi

TEMP_DIR=$(mktemp -d -t montag.XXXXXXXXXX)

function finish {
  rm -rf "${TEMP_DIR}"
}
trap finish EXIT

IN_BASENAME="$(basename "${IN_FILE}")"
OUT_BASENAME="$(basename "${OUT_FILE}")"

cp "${IN_FILE}" "${TEMP_DIR}/"

if [[ -n "${SWEARS_FILE}" ]] && [[ -f "${SWEARS_FILE}" ]] ; then
  cp "${SWEARS_FILE}" "${TEMP_DIR}/swears.txt"
  SWEARS_MAP="-v "${TEMP_DIR}/swears.txt:/usr/local/bin/swears.txt:ro""
else
  SWEARS_MAP=""
fi

"${ENGINE}" run --rm -t \
  -u $([[ "${ENGINE}" == "podman" ]] && echo 0 || id -u):$([[ "${ENGINE}" == "podman" ]] && echo 0 || id -g) \
  -v "${TEMP_DIR}:/data:rw" ${SWEARS_MAP} \
  "${IMAGE}" -i "/data/${IN_BASENAME}" -o "/data/${OUT_BASENAME}" -e "${ENCODING}"

cp "${TEMP_DIR}/${OUT_BASENAME}" "${OUT_FILE}"

echo "${OUT_FILE}"