boneskull

function encodeuri {
  local string="${@}"
  local strlen=${#string}
  local encoded=""

  for (( pos = 0; pos < strlen; pos ++ )); do
    c=${string:$pos:1}
    case "$c" in
      [-_.~a-zA-Z0-9]) o="${c}" ;;
      *) printf -v o '%%%02x' "'$c"