#!/bin/sh

if [ $# -ne 3 ] || [ "$1" = "-h" ]; then
	cat <<EOF
Usage: ${0##*/} VALUE IN-CURRENCY OUT-CURRENCY

Convert VALUE from IN-CURRENCY to OUT-CURRENCY.
CURRENCY is a 3-letters code like EUR, SEK, USD, etc.

EOF
	exit
fi

curl -sA "Mozilla/5.0" "http://www.google.com/finance?q=$2$3" | \
	awk -v value=$1 -F '<|>' '/^1 / {print value * substr($3, 1, index($3," "))}'