#!/bin/rc

rfork e

DEFAULT=ewr

fn usage{
	echo 'usage: weather 3-letter-city-code' >[1=2]
	echo 'for a list of cities in new york, say' >[1=2]
	echo '	weather ny' >[1=2]
	exit usage
}

switch($#*){
case 0
	arg=$DEFAULT
	if(~ $#weather 1)
		arg=$weather
case 1
	arg=$1
case *
	usage
}

switch($arg){
case [a-zA-Z][a-zA-Z][a-zA-Z]
	script=('' '' 'C' '4' '1' '1' $arg '' '' '' '' 'X')
case [a-zA-Z][a-zA-Z]
	script=('' '' 'C' '4' '1' '3' $arg '' '' '' '' 'X')
case *
	usage
}

{
	for(i in $script)
		echo $i
} |
con -nrl tcp!rainmaker.wunderground.com!telnet |
sed -n '/Enter .-letter .* code:/,/CITY FORECAST MENU/p' |
sed 's/Enter .-letter .* code: //' |
sed 's/   Press Return to continue, M to return to menu, X to exit: //' |
grep -v 'CITY FORECAST MENU' |
tr -d '
' |
sed 's/ *$//' |
uniq