Merge pull request #426 from joshbrown/master

Added a Joomla migrator

lib/jekyll/migrators/joomla.rb

@@ -0,0 +1,53 @@
+require 'rubygems'
+require 'sequel'
+require 'fileutils'
+require 'yaml'
+
+# NOTE: This migrator is made for Joomla 1.5 databases.
+# 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 Joomla
+    def self.process(dbname, user, pass, host = 'localhost', table_prefix = 'jos_', section = '1')
+      db = Sequel.mysql(dbname, :user => user, :password => pass, :host => host, :encoding => 'utf8')
+
+      FileUtils.mkdir_p("_posts")
+
+      # 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 `title`, `alias`, CONCAT(`introtext`,`fulltext`) as content, `created`, `id` FROM #{table_prefix}content WHERE state = '0' OR state = '1' AND sectionid = '#{section}'"
+
+      db[query].each do |post|
+        # Get required fields and construct Jekyll compatible name.
+        title = post[:title]
+        slug = post[:alias]
+        date = post[:created]
+        content = post[:content]
+        name = "%02d-%02d-%02d-%s.markdown" % [date.year, date.month, date.day,
+                                               slug]
+
+        # Get the relevant fields as a hash, delete empty fields and convert
+        # to YAML for the header.
+        data = {
+           'layout' => 'post',
+           'title' => title.to_s,
+           'joomla_id' => post[:id],
+           'joomla_url' => post[:alias],
+           'date' => date
+         }.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