hopt-gen

#!/usr/bin/env bash


#[[-------------------------------------------------------------------- Settings
set -o errexit   # abort on nonzero exitstatus
set -o nounset   # abort on unbound variable
set -o pipefail  # don't hide errors within pipes
# set -o xtrace
#]]

usage(){
  printf "%s FILE \n" "${0}" 
  printf "\tFILE\twhich is the script where extract the options \n"
}



main(){

  if [[ "${#}" -ne 1  ]]; then
    usage && exit 1
  fi

  parse_options=$(sed -n "/BEGIN_PARAMETERS_LOOP/,/END_PARAMETERS_LOOP/p" "${1}")

  printf "help_options(){\n"
  printf '\tprintf "Options : \\n" \n'
  (
  while read -r line; do 
    cpt+=1
    if [[ "${line}" =~ -?(\|--) ]]; then
      option="$(echo "${line//|/', '}" | sed 's/*/ARG/g' )"

      printf '\tprintf "\\t%s||command description \\n" \n' "${option/\)}"
    fi

  done <<< "${parse_options}"
  ) | column -t -s "||"

  printf "}\n"
}

main "${@}"