get_command_path

#!/usr/bin/env bash

if [ "$1" = '--help' ]; then
	exit 1
elif [ "$1" = '--version' ]; then
	exit 1
fi
declare retVal='--name'
if [[ "$1" =~ -([pdna]|-(path|dir|directory|name|all)) ]]; then
	retVal="-$1"
	shift
fi
declare -r retVal
if [ -e "$1" ]; then
	readonly MY_PATH="$1"
else
	readonly MY_PATH=$(realpath "$0")
fi
MY_DIR=''
MY_NAME=''
if [[ "$MY_PATH" =~ ^(.*)/([^/]+)$ ]]; then
	readonly MY_DIR="${BASH_REMATCH[1]}" MY_NAME="${BASH_REMATCH[2]}"
	case "$retVal" in
		(-p | --path)
			echo "$MY_PATH"
			exit
			;;
		(-d | --dir | --directory)
			echo "$MY_DIR"
			exit
			;;
		(-n | --name)
			echo "$MY_NAME"
			exit
			;;
		# (-a | --all)
		# 	declare -A MY=(
		# 		[PATH]="$MY_PATH"
		# 		[DIR]="$MY_DIR"
		# 		[NAME]="$MY_NAME"
		# 	)
		# 	declare -p MY
		# 	exit
		# 	;;
		(*) ;;
	esac
else
	readonly MY_DIR="$HOME" MY_NAME="$0"
	echo "$MY_NAME: Failed to get dir" 1>&2
	exit 1
fi