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#!../expect -f

# weather - Expect script to get the weather (courtesy University of Michigan)
# Don Libes
# Version 1.9

# local weather is retrieved if no argument
# argument is the National Weather Service designation for an area
# I.e., WBC = Washington DC (oh yeah, that's obvious)

exp_version -exit 5.0

if $argc>0 {set code $argv} else {set code "WBC"}

proc timedout {} {
        send_user "Weather server timed out.  Try again later when weather server is not so busy.\n"
        exit 1
}

# delete special weather statement question
proc delete_special {s} {
        set x [string first "     ******" $s]
        return [join [lrange [split $s ""] 0 $x] ""]
}

set timeout 60
log_user 0

set env(TERM) vt100     ;# actual value doesn't matter, just has to be set

spawn telnet downwind.sprl.umich.edu 3000
match_max 100000
for {} 1 {} {
        expect timeout {
                send_user "failed to contact weather server\n"
                exit
        } "Press Return to continue*" {
               # this prompt used sometimes, eg, upon opening connection
               send "\r"
        } "Press Return for menu*" {
               # this prompt used sometimes, eg, upon opening connection
               send "\r"
        } "M to display main menu*" {
                # sometimes ask this if there is a weather watch in effect
                send "M\r"
        } "Change scrolling to screen*Selection:" {
                break
        } eof {
                send_user "failed to telnet to weather server\n"
                exit
        }
}
send "C\r"
expect timeout timedout "Selection:"
send "4\r"
expect timeout timedout "Selection:"
send "1\r"
expect timeout timedout "Selection:"
send "1\r"
expect timeout timedout "city code:"
send "$code\r"
expect $code            ;# discard this

for {} 1 {} {
        expect timeout {
                timedout
        } "Press Return to continue*:*" {
                send_user "\n[delete_special $expect_out(buffer)]\n"
                send "\r"
        } "Press Return to display statement, M for menu:*" {
                send_user "\n[delete_special $expect_out(buffer)]\n"
                send "\r"
        } -re "(.*)CITY FORECAST MENU.*Selection:" {
                send_user "\n$expect_out(1,string)\n"
                break
        }
}

send "X\r"
expect