-#
-# Weather.pl: Frontend to GEO::Weather (weather.com).
-# Author: logeist
-# Version: v0.1 (20020512).
-# Created: 20020512.
-#
+#!/usr/bin/perl
package Weather;
-use IO::Socket;
-use strict;
+# kevin lenzo (C) 1999 -- get the weather forcast NOAA.
+# feel free to use, copy, cut up, and modify, but if
+# you do something cool with it, let me know.
-###local $SIG{ALRM} = sub { die "alarm\n" };
+# 16-SEP-99 lenzo@cs.cmu.edu switched to LWP::UA and
+# put in a timeout.
+
+my $no_weather;
+my $cache_time = 60 * 40; # 40 minute cache time
+my $default = 'KAGC';
+
+BEGIN {
+ $no_weather = 0;
+ eval "use LWP::UserAgent";
+ $no_weather++ if ($@);
+}
sub Weather {
- my ($query) = @_;
- my (@weatherloc, $whash);
- my $retval;
+ my ($args) = @_;
+ &::performStrictReply( &queryText( $args, 'weather' ) );
+ return;
+}
- return unless &::loadPerlModule("Geo::Weather");
- my $weather = new Geo::Weather;
+sub Metar {
+ my ($args) = @_;
+ &::performStrictReply( &queryText( $args, 'metar' ) );
+ return;
+}
- for ($query) {
- s/^[\s\t]+//;
- s/[\s\t]+$//;
- s/[\s\t]+/ /;
- }
+sub queryText {
+ my ($station) = shift;
+ my ($wxmode) = shift;
+ my $result;
- @weatherloc = split /,\s*/, $query;
+ $station = uc($station);
+ $station =~ s/for //i;
- if (@weatherloc == 1) {
- $whash = $weather->get_weather ("$weatherloc[0]");
- } else {
- $whash = $weather->get_weather ("$weatherloc[0]", "$weatherloc[1]");
+ if ($no_weather) {
+ return 0;
}
+ else {
- if (!ref $whash) {
- $retval = "I'm sorry, not able to return weather conditions for $query";
- &::performStrictReply($retval);
- undef $weather;
- return;
- }
+ if ( exists $cache{$station} ) {
+ my ( $time, $response ) = split $;, $cache{$station};
+ if ( ( time() - $time ) < $cache_time ) {
+ return $response;
+ }
+ }
- $retval = "Current conditions in $whash->{city}, $whash->{state}: $whash->{cond}, $whash->{temp}° F. Winds $whash->{wind} MPH. Dewpoint: $whash->{dewp}° F, Relative Humidity: $whash->{humi}%,";
+ my $ua = new LWP::UserAgent;
+ $ua->proxy( 'http', $::param{'httpProxy'} )
+ if ( &::IsParam('httpProxy') );
- if ($whash->{visb} eq 'Unlimited') {
- $retval .= " Visibility: $whash->{visb}, ";
- } else {
- $retval .= " Visibility: $whash->{visb} mi., ";
- }
+ $ua->timeout(10);
+ my $request =
+ new HTTP::Request( 'GET',
+ "http://weather.noaa.gov/weather/current/$station.html" );
+ my $response = $ua->request($request);
+
+ if ( !$response->is_success ) {
+ if ( $response->code == 404 ) {
+ return "I can't find station code \"$station\""
+ . " (see http://www.nws.noaa.gov/oso/site.shtml"
+ . " or http://www.nws.noaa.gov/tg/siteloc.shtml"
+ . " for ICAO locations codes).";
+ }
+ else {
+ return 'Something failed in connecting to the NOAA web'
+ . " server. Try again later.";
+ }
+ }
+
+ $content = $response->content;
+ $content =~ s|.*?<BODY[^>]*>||is;
+
+ #$content =~ s|.*?current weather conditions.*?<BR>([^<]*?)\s*<.*?</TR>||is;
+ $content =~ s|.*?current weather conditions[^<]*(<[^>]+>\s*)+||is;
+ $content =~ s|([^<]*?)\s*<.*?</TR>||is;
+ my $place = $1;
+ chomp $place;
+
+ $content =~ s|.*?<TR>(?:\s*<[^>]+>)*\s*([^<]+)\s<.*?</TR>||is;
+ my $id = $1;
+ chomp $id;
+
+ $content =~ s|.*?conditions at.*?</TD>||is;
+
+#$content =~ s|.*?<OPTION SELECTED>\s+([^<]+)\s<OPTION>.*?</TR>||s; # local time
+ $content =~ s|.*?<BR>\s+([^<]+?)\s*</FORM>.*?</TR>||s; # UTC
+ my $time = $1;
+ $time =~ s/-//g;
+ $time =~ s/\s+/ /g;
+
+ $content =~ s|\s(.*?)<TD COLSPAN=2>||s;
+ my $features = $1;
+
+ while ( $features =~
+s|.*?<TD ALIGN[^>]*>(?:\s*<[^>]+>)*\s+([^<]+?)\s+<.*?<TD>(?:\s*<[^>]+>)*\s+([^<]+?)\s<.*?/TD>||s
+ )
+ {
+ my ( $f, $v ) = ( $1, $2 );
+ chomp $f;
+ chomp $v;
+ $feat{$f} = $v;
+ }
+
+ $content =~ s|.*?>(\d+\S+\s+\(\S+\)).*?</TD>||s; # max temp;
+ $max_temp = $1;
+ $content =~ s|.*?>(\d+\S+\s+\(\S+\)).*?</TD>||s;
+ $min_temp = $1;
- $retval .= " Barometric Pressure: $whash->{baro} in.";
- if($whash->{heat} ne 'N/A') {
- $retval .= " Heat Index: $whash->{heat}° F.";
+ if ($time) {
+ if ( $wxmode eq 'metar' && defined( $feat{'ob'} ) ) {
+ return ( 'METAR ' . $place . ": " . $feat{'ob'} );
+ }
+
+ $result = "$place; $id; last updated: $time";
+ foreach ( sort keys %feat ) {
+ next if $_ eq 'ob';
+ $result .= "; $_: $feat{$_}";
+ }
+ my $t = time();
+ $cache{$station} = join $;, $t, $result;
+ }
+ else {
+ $result =
+"I can't find that station code (see http://weather.noaa.gov/weather/curcond.html for locations and codes)";
+ }
+ return $result;
}
+}
- &::performStrictReply($retval);
- undef $weather;
+if (0) {
+ if ( -t STDIN ) {
+ my $result = Weather::NOAA::get($default);
+ $result =~ s/; /\n/g;
+ print "\n$result\n\n";
+ }
}
1;
+
+# vim:ts=4:sw=4:expandtab:tw=80
+
+__END__
+
+=head1 NAME
+
+NOAA.pl - Get the weather from a NOAA server
+
+=head1 PREREQUISITES
+
+ LWP::UserAgent
+
+=head1 PARAMETERS
+
+weather
+
+=head1 PUBLIC INTERFACE
+
+ weather [for] <station>
+
+=head1 DESCRIPTION
+
+Contacts C<weather.noaa.gov> and gets the weather report for a given
+station.
+
+=head1 AUTHORS
+
+Kevin Lenzo
projects / infobot.git / blobdiff