I wrote this tool because I wanted to determine the leg-by-leg mileage of a trip I took from Boston to Buffalo to Kansas City to Denver to .... It was too tedious to type in each trip leg pair individually into the form at maps.yahoo.com and wait for the results.

Using this code you can simply type:
multimap 'boston, ma' 'buffalo, ny' 'Kansas City, mo' 'Denver, co'
and it will save the individual results from maps.yahoo.com to the current directory as trip_leg_N.html, where N goes from 1 to (the number of addresses you gave) - 1.

This currently just works for addresses and cities, not airport codes. 

#!/usr/bin/perl

use warnings;
use strict;

use Data::Dumper;
use LWP::Simple;

{
    my @addrs = @ARGV;
    if ( scalar @addrs < 2 ) {
        print "You have " . scalar @addrs . " addresses. " .
              "Need 2 or more.  Enter 'done<return>' to finish\n";
        while ( <> ) {
            last if $_ eq "done\n";
            push @addrs, $_;
        } 

        die help () if scalar @addrs < 2;
        chomp @addrs;
    }

    @addrs = process_addresses ( @addrs );

    foreach ( 0 .. scalar @addrs - 2 ) {
        my $url = make_url ( [ $addrs[$_], $addrs[$_+1] ] );
        getstore ( $url, "trip_leg_" . ($_ + 1) . ".html" );
    }
}


sub process_addresses {
    my @addrs = @_;
    foreach ( @addrs ) {
        my $count = $_ =~ tr/,/,/;
        $_ = [ split ( /\s*,\s*/, $_, $count ) ];
        unshift @$_, "" if 1 == $count;
        $_ =~ s/\s+/%2C/g foreach @$_;
    }
    return @addrs;
}

sub make_url {
    my ( $addr_pair ) = @_;
    my $url = "http://maps.yahoo.com/dd_result?country=us&tcountry=us"
+ .
              join ( '&', "addr="  . $addr_pair->[0][0],
                          "csz="   . $addr_pair->[0][1],
                          "taddr=" . $addr_pair->[1][0],
                          "tcsz=" .  $addr_pair->[1][1] );
    return $url;
}

sub help {
    print << "    EOF";
    usage: multimap "31 Kinnaird St, Cambridge, MA" \
                    "27 Hall St, Somerville, MA" \
                    "60 Garden St, Cambridge, MA"
    EOF
}

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In reply to Multi-stop Trip Yahoo Maps Tool by kesterkester

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