Added wordpress converter

lib/jekyll/converters/wordpress.rb

@@ -0,0 +1,54 @@
+require 'rubygems'
+require 'sequel'
+require 'fileutils'
+
+# NOTE: This converter requires Sequel and the MySQL gems.
+# The MySQL gem can be difficult to install on OS X. Once you have MySQL
+# installed, running the following commands should work:
+# $ sudo gem install sequel
+# $ sudo gem install mysql -- --with-mysql-config=/usr/local/mysql/bin/mysql_config
+
+module Jekyll
+  module WordPress
+    
+    # Reads a MySQL database via Sequel and creates a post file for each 
+    # post in wp_posts that has post_status = 'publish'.
+    # This restriction is made because 'draft' posts are not guaranteed to
+    # have valid dates.
+    QUERY = "select * from wp_posts where post_status = 'publish' and post_type = 'post'"
+
+    def self.process(dbname, user, pass, host = 'localhost')
+      db = Sequel.mysql(dbname, :user => user, :password => pass, :host => host)
+      
+      FileUtils.mkdir_p "_posts"
+            
+      db[QUERY].each do |post|
+        # Get required fields and construct Jekyll compatible name
+        title = post[:post_title]
+        slug = post[:post_name]
+        date = post[:post_date]
+        content = post[:post_content]
+        
+        name = [date.year, date.month, date.day, slug].join('-') + ".markdown"
+
+        # Get the relevant fields as a hash, delete empty fields and convert
+        # to YAML for the header        
+        data = {
+           'layout' => 'post',
+           'title' => title.to_s,
+           'excerpt' => post[:post_excerpt].to_s,
+           'wordpress_id' => post[:ID],
+           'wordpress_url' => post[:guid]
+         }.delete_if { |k,v| v.nil? || v == ''}.to_yaml
+
+        # Write out the data and content to file
+        File.open("_posts/#{name}", "w") do |f|
+          f.puts data
+          f.puts "---"
+          f.puts content
+        end
+      end
+
+    end
+  end
+end