Migrate from Wordpress to Blogger

check_wordpress_blogger_links.rb

require 'rubygems'
require 'nokogiri'
require 'httparty'

export = Nokogiri::XML(File.new(ARGV[0]))
export.root.xpath("//item/link").each do |node|
  begin
    # do this the hard way because no way to get final URI after redirects otherwise
    request = HTTParty::Request.new(Net::HTTP::Head, node.text, {})
    response = request.perform
    unless response.code == 200
      puts "#{request.path} does not work (was #{node.text})"
    end
  rescue URI::InvalidURIError => e
    puts "URL: #{node.text} is invalid?"
  end
end

gistfile1.txt

<VirtualHost *>
  ServerName blog.semergence.com
  DocumentRoot /var/www/blog.semergence.com
  ErrorLog /var/log/apache2/blog.semergence.com-error.log
  CustomLog /var/log/apache2/blog.semergence.com-access.log common

  ErrorDocument 404 /redirect-to-blogger.php

  RewriteEngine On
  RewriteRule ^/$ http://blog.sethladd.com/ [R=301]
  RewriteRule ^/feed http://blog.sethladd.com/feeds/posts/default [R=301]
  RewriteRule ^/category - [G]

  <Directory /var/www/blog.semergence.com>
    Order allow,deny
    Allow From All
    AllowOverride All
  </Directory>
</VirtualHost>

gistfile2.php

<?php
$pattern = "{^/(\d{4})/(\d{2})/\d{2}\/(.*)/$}";

preg_match($pattern, $_SERVER['REDIRECT_URL'], $matches);

if (empty($matches)) {
  header("HTTP/1.1 404 Not Found");
  exit();
}

$year = $matches[1];
$month = $matches[2];
$slug = $matches[3];

// blogger removes common words
function filter($val) {
  switch ($val) {
    case 'the':
    case 'a':
    case 'an':
    case '.':
      return false;
    default:
      return true;
  }
}
$slug = implode('-', array_filter(explode('-', $slug), "filter"));

// blogger only has less than 39 characters
while (strlen($slug) > 39) {
  $slug = substr($slug, 0, strrpos($slug, '-'));
}

// blogger doesn't like underscores
$slug = str_replace('_', '', $slug);

$redirect = 'http://blog.sethladd.com/'.$year.'/'.$month.'/'.$slug.'.html';

header("HTTP/1.1 301 Moved Permanently");
header('Location: ' . $redirect);
?>

This is just the app what I need but I have no idea how to get it running. Can you please advise, thank you.