#!/usr/bin/env bash

##Helper Functions

urldecode() {
	# urldecode <string>
	local url_encoded="${1//+/ }"
	printf '%b' "${url_encoded//%/\\x}"
}

string="$1"
if [ -z "$string" ]; then
	string="$(cat)"
fi

#URL
decoded=$(urldecode "$string")
if [ "$decoded" != "$string" ]; then
	echo "$decoded"
fi