bash_template.sh

#!/usr/bin/env bash
source "helpers"

SCRIPT_PATH=${0%/*}
SCRIPT_NAME=${0##*/}

# @help         Parse given arguments and match them
#               to local variables.
# @usage        parse <args...>
parse() {
  # iterate over all arguments
  while [[ "$#" > 0 ]]; do
    # assume that the first argument
    # is a flag and the second the flag value
    flag="$1"
    val="$2"

    # value must not be a flag
    if [[ ! "$val" || "$val" == -* ]]; then
      val=
    fi

    case "$flag" in
      # display usage
      -h|--help) usage;;
      # enable interactive mode
      -*) error "Invalid option $flag";;
    esac;
  done
}

# @help     Write usage information about this script and exit.
# @usage    help
usage() {
  echo "
Usage:
    $SCRIPT_NAME

Options:
    -h --help     Show help
"
  exit 1;
}


main() {
  parse "$@"
}

main "$@"