Script to generate Rewrite conditions for .htaccess

htaccess_rewrite_generator.rb

require 'rubygems'
require 'nokogiri'
require 'date'

def newUrl(baseUrl, date, name)
    "#{baseUrl}/#{date.strftime '%Y/%m'}/#{name}"
end

def writeMap(items)
    txtFile = File.open 'urlmap.txt', 'w'
    items.each do |item|
        postName = item.xpath('wp:post_name').inner_text()
        postId   = item.xpath('wp:post_id').inner_text()
        postDate = Date.parse(item.xpath('wp:post_date').inner_text())

        txtFile << "RewriteCond %{QUERY_STRING} ^p=#{postId}$\n"
        txtFile << "RewriteRule ^$ #{newUrl('', postDate, postName)}? [R=301,L]\n\n"
    end

end

def setLinks(items, doc)
    items.each do |item|
        item.xpath('link').first().inner_html = item.xpath('guid').inner_text()
    end
    File.open("links-fixed.xml", "w") { |f| doc.write_xml_to f }
end

file = "../pixelingene.wordpress.2011-09-16.xml"
doc  = Nokogiri::XML(File.open file)

blogUrl = doc.xpath('rss/channel/wp:base_blog_url').inner_text()

items = doc.xpath '//item[wp:status="publish" and wp:post_type="post"]'
items = items.sort { |x, y|
    d1 = Date.parse x.xpath('wp:post_date').inner_text()
    d2 = Date.parse y.xpath('wp:post_date').inner_text()

    d1 <=> d2
}

writeMap items
#setLinks items, doc