../.
weblib.sh
webhelp.sh
vx.sh
urldecode.sh
an urldecoder in pure bash; no external binaries used
i saw a couple of libs that actually did this by having a dictionary of common (eg %20 %22) encoded values and replacing them with their counterparts!!!!!


using it is pretty straightforward: 

ENCODED_STRING="pies%20%22poep%22%20kak"

DECODED_STRING=$(urldecode "${ENCODED_STRING}")

echo "$DECODED_STRING"



pies "poep" kak


For example you can use it to parse the decoded values of a GET request into enviroment variables: 

parse_getvars () {

for x in ${QUERY_STRING//&/" "}; do

	export "HTTP_GET_$(urldecode "$x")"

done

}

it parses the query string into enviroment variables prefixed with HTTP_GET_

urldecode returns url decoded string from input 

# urldecoding function for bash

# (c) 2003 GPL by Matthijs Dalhuijsen

# check http://www.gnu.org/gpl for details



urldecode () {

	local bf=

	local cb=

	local hi=0

	local le=0

	local x=-1

	for p in  "$@"; do

		le="${#p}"

		while (( x++ < le )); do

		case  "${p:${x}:1}" in

			"%")

				if (( hi == 0 )); then

					(( hi++ ))	

				else

					bf="${bf}${p:${x}:1}"

					hi=0

				fi

				;;

			"+")

				bf="${bf} "

				;;

			*)

				if (( hi == 0 )); then

					bf="${bf}${p:${x}:1}"

				fi

				if (( hi == 2 )); then

					cb="${cb}${p:${x}:1}"

					bf="${bf}$(echo -e "\\x${cb}")"

					hi=0

				fi

				if (( hi == 1 )); then

					cb=${p:${x}:1}

					(( hi++ ))

				fi

				;;

		esac

		done

	done

	echo -n "$bf";

}

*mental note (update)!*
more perlish would be (and i think a 4 liner....) to split on % and then match the first 2 chars of the chunks, ..
a bit like in parse_getvars() above

rand.sh
obsoleter.sh
funcookie.sh
apple.sh