#!/usr/bin/env bash

shopt -s extglob
configfile="/path/to/file"

function read_config() {
  while IFS='= ' read lhs rhs
  do
    if [[ $lhs != *( )#* ]]
    then
      # Specify test conditions for settings here
      declare $lhs=$rhs
    fi
  done < "$configfile"
}

function show_help() {
  cat > /dev/stdout << END
${0} [-h]

REQUIRED ARGS:


OPTIONAL ARGS:
-h - show this help
-v - verbose logging

END
}

function parseopts() {
  while getopts ":hv" opt
  do
    case "${opt}" in
      h)
        show_help
        exit 0
        ;;
      v) VERBOSE=1 ;;
      *)
        echo "Invalid option. Try -h for help."
        exit 1
    esac
  done
  return $OPTIND
}

function parseargs() {
  for p in "$@"
  do
    args+=("$p")
  done
}

function main() {
  parseopts "$@"
  parseargs "${@:$?}"

  if [[ ${VERBOSE} -gt 0 ]]
  then
    set -x
  fi
}

main "$@"