From: Avinash Magar <avinash.magar@...>
Date: 2008-08-28T21:23:30+09:00
Subject: How would this Perl script look in Ruby?

Can somebody please me tell the way to write this script in Ruby?

;---------------------------------------
#!/bin/env perl

use strict;
use Data::Dumper;

#; define some message templates here
my $message_templates = [
    'adm has _QTY_ _CAR_ cars',
    'ssn had _QTY_ _CAR_ cars',
];

#; value map
my %value_map = (
    '_CAR_' => {
        'order' => 'rand',
        'vals' => [qw(bentley merc bmw audi porsche ford honda lexus)]
        },
    '_QTY_' => {
        'order' => 'rand',
        'vals' => [1..10]
        }
);

# using 'random_msg_stub and val generators from %value_map
sub get_next_random_msg {
    my ($next_msg, $val_map) = @_;

    my $m = &$next_msg();
    while (my($vk, $v) = each (%value_map)) {
        my ($nval) = $v->{gen}->();
        $m =~ s/$vk/$nval/g;
    }
    $m;
}

# return $arrya[$last + 1] elem of array; $last is remembered across
invocations
sub get_seq_val_generator {
    my $a = $_[0];
    my $last = 0;
    return sub {
        $last = 0 if ($last == scalar @$a);
        $$a[$last++];
    };
}

# return random elem of array
sub get_random_val_generator {
    my $arr = shift;
    return sub { return $arr->[ rand @$arr] };
}

#; let's generate value generator foreach value in 'value_map
while (my($vk, $v) = each (%value_map)) {
    if ($v->{order} eq 'seq') {
        $v->{gen} = get_seq_val_generator($v->{vals});
    } elsif ($v->{order} eq 'rand') {
        $v->{gen} = get_random_val_generator($v->{vals});
    } else {
        die "Invalid value order in value_map\n";
    }
}

my ($get_next_random_msg_stub) =
get_random_val_generator($message_templates);

while (1) {
    print get_next_random_msg($get_next_random_msg_stub, \%value_map),
"\n\n";
}

1;

;--------------------------------------------------


thanks in advance.
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