bash-script-template.sh

#!/usr/bin/env bash

# Script for testing options

set -o pipefail
set -o errexit
set -o nounset
#set -o xtrace

__dir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
__file="${__dir}/$(basename "${BASH_SOURCE[0]}")"
readonly __dir __file

ERR_FATAL=1
ERR_LOGIC=2
ERR_PARAMS=3
ERR_FILE_SYSTEM=4

VERBOSE_OFF=0
VERBOSE=1
VERBOSE_VERY=2
VERBOSE_DEBUG=3

APP_VERSION=0.1.0

t_red='\e[0;31m'
t_green='\e[0;32m'
t_yellow='\e[0;33m'
t_reset='\e[0m'

check_error () {
  if [ $1 != 0 ]; then
    echo -e "${t_red}error:${t_reset} "$2 > /dev/stderr
    exit $1
  fi
}

show_help () {
    cat << EOF
Options test v${APP_VERSION}

Base format:
  $ bash options-test.sh ARG1 [ARG2] [OPT1..OPTn]

ARGUMENTS

Pass argumenst:
  ARG1        First argument.
  ARG2        Second argument.
              Default: "0"

OPTIONS
  -p|--port PORT
              Define custom connection port.
              Default: 2222
  -g|--use-vcs
              Include VCS file into transition archives.
              It excludes .idea files and VCS. This option will disable
              excluding VCS files.
  -s|--silent   Disable output.
  -v|--verbose  Set "very" verbose mode.
  -D|--debug  Set "debug" verbose mode.
  -H|--host HOST
              Connection host. It can be passed with a username.
              [email protected]
  -e|--ignore-excluding
              Ignore all default excluding.
  -c|--create-destination
              Create destination path automatically.
  -x|--tar-exclude
              Add exclude path on pack files.
  -u|--unpack Unpack downloaded archive automatically in case when archive was created before transferring.
  -V|--version
              Show version number
  -h|--help   Show this help

EOF
}

process_params() {
  # Process options and arguments

  arg_first="${1}"
  shift

  arg_second=0
  if [ "${1::1}" != '-' ]; then # check if it's not an option
    arg_second="${1}"
    shift
  fi

  local options
  declare -A options
  options=(
    [w]=without-value
    [a:]=with-value:
    [h]=help
    [q]=quiet
  )

  OPTS=`getopt -o $(echo ${!options[*]} | tr -d ' ') -l $(echo ${options[*]} | tr ' ' ',') -- "$@"`
  eval set -- "${OPTS}"

  without_value=0
  while true; do
    case "${1}" in
      -w|--without-value)
        without_value=1
        shift
        ;;
      -a|--with-value)
        with_value="${2}"
        shift 2
        ;;
      -c|--create-destination)
        create_target_path=1
        shift
        ;;
      -s|--silent)
        sscp_verbose=${VERBOSE_OFF}
        shift
        ;;
      -v|--verbose)
        verbose=${VERBOSE}
        shift
        ;;
      -vv)
        verbose=${VERBOSE_VERY}
        shift
        ;;
      -vvv)
        verbose=${VERBOSE_DEBUG}
        shift
        ;;
      -q|--quiet)
        verbose=${VERBOSE_OFF}
      -h|--help)
        show_help
        exit 0
        ;;
      -\?)
        show_help
        exit 1
        ;;
      --)
        shift
        break
        ;;
      *)
        check_error ${ERR_PARAMS} "${0}: unparsable option ${1}."
        ;;
    esac
  done
}