Url encode

URL encoding function

• Simple way to encode URLs for bash scripts.. Brainless but seems to work ok for most use cases..
• Yes, this will encode the '/' as the '%2F' character, but curl does not spit errors and I have not seen a failure doing things this way

urlencode() {
  local string="$1"
  local encoded=""
  local pos c o
  for (( pos=0 ; pos<${#string} ; pos++ )); do
    c=${string:$pos:1}
    case "$c" in
      [a-zA-Z0-9.~_-]) o="$c" ;;
      *) printf -v o '%%%02X' "'$c"
    esac
    encoded+="$o"
  done
  echo "$encoded"
}