# How to deal with 2 entrants specifying 2 songs ???
# Could be an issue with SPARQL: e.g., see discussion

# "Constructing containers and collections"
#   https://www.w3.org/2009/sparql/wiki/Feature:Constructing_containers_and_collections


# Adapted from:
#  https://stackoverflow.com/questions/296536/how-to-urlencode-data-for-curl-command

rawurlencode() {
    local string="${1}"
    local strlen=${#string}
    local encoded=""
    local pos c o

    for (( pos=0 ; pos<strlen ; pos++ )); do
	c=${string:$pos:1}
	case "$c" in
	    [-_.~a-zA-Z0-9\(\)] ) o="${c}"
	    ;;

	    " " ) o="+"
	    ;;
	    
	    * )   printf -v o '%%%02X' "'$c"
	esac
	encoded+="${o}"
    done
    echo "${encoded}"
}