setfacl.sh

#!/usr/bin/env bash
##
## Title:                     setfacl.sh
## Description:               
## Author:                    B. van wetten
## Created date:              17-02-2020
## Updated date:              17-02-2020
## Version:                   0.1.0
## GitHub Gist:               https://gist.github.com/QNimbus/81ee0fba982e68eb5d9df6277df6951e
##
## Usage:                     setfacl.sh

# Shell utilities
FIND=$(which find); [[ $? != 0 ]] && echo "Command 'find' not found" >&2 && exit 1
GETFACL=$(which getfacl); [[ $? != 0 ]] && echo "Command 'getfacl' not found" >&2 && exit 1
SETFACL=$(which setfacl); [[ $? != 0 ]] && echo "Command 'setfacl' not found" >&2 && exit 1

# Initialize variables
_PWD=$(pwd)
_ME=$(basename "${0}")

# Option strings
SHORT=hm:i:
LONG=help,minutes:,ignore:

# Get command line arguments
if [[ "${#}" -gt 0 ]]
then
  getopt -T > /dev/null
  if [ $? -eq 4 ]; then
    # GNU enhanced getopt is available
    _ARGS=$(${GETOPT} --name "$_ME" --long ${LONG} --options ${SHORT} -- "$@")
  else
    # Original getopt is available (no long option names, no whitespace, no sorting)
    _ARGS=$(${GETOPT} ${SHORT} "$@")
  fi
  if [ $? -ne 0 ]; then
    echo "$_ME: usage error (use -h for help)" >&2
    exit 2
  fi
fi

###############################################################################
# Functions                                                                   #
###############################################################################

# _print_usage()
#
# Usage:
#   _print_usage
#
# Print the program usage information.
_print_usage() {
   cat <<HEREDOC
____ ____ ___ ____ ____ ____ _    
[__  |___  |  |___ |__| |    |    
___] |___  |  |    |  | |___ |___ 

Usage:
  ${_ME} -h

Options:
  -h        Show this screen

HEREDOC
   exit ${1:-0}
}

# _parse_commandline_arguments()
#
# Usage:
#   _parse_commandline_arguments
#
# Parses and validates commandline arguments and populates appropriate variables.
_parse_commandline_arguments()
{
   while true;
   do
      case "${1:-}" in
          -i|--ignore)
            while
              if ! [[ -z "${2}" || "${2}" =~ ^-{1,2} ]]
              then
                _IGNORE_DEVS+=("${2}")
                shift 1
              fi
              ! [[ -z "${2}" || "${2}" =~ ^-{1,2} ]]
            do
              :
            done
            shift 1
            ;;
          -m|--minutes)
            [[ -z "${2}" || "${2}" == *[[:space:]]* || "${2}" == -* ]] && { echo "$_ME: $1 needs a value" >&2; _print_usage 1; }
            _set_variable _INTERVAL $(("${2}"*60))
            shift 2
            ;;
          \?) echo "$_ME: Unknown option -$1" >&2;
            exit 1
            ;;
          :) echo "$_ME: -$1 needs a value" >&2;
            exit 1 
            ;;
          *) shift
            break
            ;;
      esac
   done
}

# _validate_parameters()
#
# Usage:
#   _validate_parameters
#
# Performs several checks on the supplied command line arguments
_validate_parameters() {
  :
}

# _set_variable()
#
# Usage:
#   _set_variable variable value
#
# Sets the variable to a value if not already set. Otherwise exits with an error message
_set_variable()
{
   local varname="$1"
   shift
   if [ -z "${!varname:-}" ]; then
      eval "$varname=\"$@\""
   else
      echo "Error: $varname already set"
      usage
   fi
}

###############################################################################
# Main                                                                        #
###############################################################################

# _main()
#
# Usage:
#   _main [<options>] [<arguments>]
#
# Description:
#   Entry point for the program, handling basic option parsing and dispatching.
_main() {
  # Avoid complex option parsing when only one program option is expected.
  if [[ "${@:-}" =~ -h|--help ]]
  then
    _print_usage
  else
    _parse_commandline_arguments "$@"

    _validate_parameters

    _FILES=$(${FIND} "${_PWD}" -type f)
    _FOLDERS=$(${FIND} "${_PWD}" -type d)

    while read FILE ; do
      printf "%s\n\n" "$(${GETFACL} "${FILE}")"
    done <<< "${_FILES}"

  fi
}

# Call `_main` after everything has been defined.
_main "$@"

exit ${exitcode:-0}