wordpress_xml_import.rb

require 'fileutils'
require 'date'
require 'yaml'
require 'rexml/document'
include REXML


doc = Document.new File.new(ARGV[0])

FileUtils.mkdir_p "_posts"

doc.elements.each("rss/channel/item[wp:status = 'publish' and wp:post_type = 'post']") do |e|
    post = e.elements
    slug = post['wp:post_name'].text
    date = DateTime.parse(post['wp:post_date'].text)
    name = "%02d-%02d-%02d-%s.markdown" % [date.year, date.month, date.day, slug]

    content = post['content:encoded'].text

    content = content.gsub(/<code>(.*?)<\/code>/, '`\1`')

    content = content.gsub(/<pre lang="([^"]*)">(.*?)<\/pre>/m, '{% highlight \1 %}\2{% endhighlight %}')
    
    (1..3).each do |i|
        content = content.gsub(/<h#{i}>([^<]*)<\/h#{i}>/, ('#'*i) + ' \1')
    end

    puts "Converting: #{name}"

    data = {
        'layout' => 'blog_post',
        'title' => post['title'].text,
        'excerpt' => post['excerpt:encoded'].text,
        'wordpress_id' => post['wp:post_id'].text,
        'wordpress_url' => post['guid'].text
     }.delete_if { |k,v| v.nil? || v == ''}.to_yaml

     File.open("_posts/#{name}", "w") do |f|
         f.puts data
         f.puts "---"
         f.puts content
     end
 
end