created a converter for textpattern, and a simple usage guide

README.textile

@@ -409,6 +409,19 @@ This code also has only been tested with Typo version 4+. Previous versions
 of Typo may not convert correctly. Please check the results and verify the 
 posts before publishing.
 
+h3. TextPattern 4
+
+To migrate your TextPattern blog into Jekyll, you'll need read access to the MySQL
+database. The lib/jekyll/converters/textpattern.rb module provides a simple convert to create .textile files in a _posts directory based on 
+the entries contained therein.
+
+  $ ruby -r './lib/jekyll/converters/textpattern' -e 'Jekyll::TextPattern.process( \
+    "database_name", "username", "password", "hostname")'
+
+The hostname defaults to _localhost_, all other variables are needed
+You may need to adjust the code used to filter entries. Left alone,
+it will attempt to pull all entries that are live or sticky.
+
 h2. License
 
 (The MIT License)

lib/jekyll/converters/textpattern.rb

@@ -0,0 +1,50 @@
+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 TextPattern
+    # Reads a MySQL database via Sequel and creates a post file for each post.
+    # The only posts selected are those with a status of 4 or 5, which means "live"
+    # and "sticky" respectively.
+    # Other statuses is 1 => draft, 2 => hidden and 3 => pending
+    QUERY = "select Title, url_title, Posted, Body, Keywords from textpattern where Status = '4' or Status = '5'"
+
+    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[:Title]
+        slug = post[:url_title]
+        date = post[:Posted]
+        content = post[:Body]
+        
+        name = [date.strftime("%Y-%m-%d"), slug].join('-') + ".textile"
+
+        # Get the relevant fields as a hash, delete empty fields and convert
+        # to YAML for the header        
+        data = {
+           'layout' => 'post',
+           'title' => title.to_s,
+           'tags' => post[:Keywords].split(',')
+         }.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