Class: JekyllImport::Importers::Drupal6

Inherits:
JekyllImport::Importer show all
Defined in:
lib/jekyll-import/importers/drupal6.rb

Constant Summary collapse

QUERY =

Reads a MySQL database via Sequel and creates a post file for each story and blog node.

"SELECT n.nid, \
         n.title, \
         nr.body, \
         n.created, \
         n.status, \
         GROUP_CONCAT( td.name SEPARATOR '|' ) AS 'tags' \
    FROM node_revisions AS nr, \
         node AS n \
    LEFT OUTER JOIN term_node AS tn ON tn.nid = n.nid \
    LEFT OUTER JOIN term_data AS td ON tn.tid = td.tid \
   WHERE (%types%) \
     AND n.vid = nr.vid \
GROUP BY n.nid"

Class Method Summary collapse

Methods inherited from JekyllImport::Importer

inherited, run, stringify_keys, subclasses

Class Method Details

.process(options) ⇒ Object 



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# File 'lib/jekyll-import/importers/drupal6.rb', line 47

def self.process(options)
  dbname = options.fetch('dbname')
  user   = options.fetch('user')
  pass   = options.fetch('password', "")
  host   = options.fetch('host', "localhost")
  prefix = options.fetch('prefix', "")
  types  = options.fetch('types', ['blog', 'story', 'article'])

  db = Sequel.mysql(dbname, :user => user, :password => pass, :host => host, :encoding => 'utf8')

  if prefix != ''
    QUERY[" node "] = " " + prefix + "node "
    QUERY[" node_revisions "] = " " + prefix + "node_revisions "
    QUERY[" term_node "] = " " + prefix + "term_node "
    QUERY[" term_data "] = " " + prefix + "term_data "
  end

  types = types.join("' OR n.type = '")
  QUERY[" WHERE (%types%) "] = " WHERE (n.type = '#{types}') "

  FileUtils.mkdir_p "_posts"
  FileUtils.mkdir_p "_drafts"
  FileUtils.mkdir_p "_layouts"

  # Create the refresh layout
  # Change the refresh url if you customized your permalink config
  File.open("_layouts/refresh.html", "w") do |f|
    f.puts <<EOF
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8" />
<meta http-equiv="refresh" content="0;url={{ page.refresh_to_post_id }}.html" />
</head>
</html>
EOF
  end

  db[QUERY].each do |post|
    # Get required fields and construct Jekyll compatible name
    node_id = post[:nid]
    title = post[:title]
    content = post[:body]
    tags = (post[:tags] || '').downcase.strip
    created = post[:created]
    time = Time.at(created)
    is_published = post[:status] == 1
    dir = is_published ? "_posts" : "_drafts"
    slug = title.strip.downcase.gsub(/(&|&amp;)/, ' and ').gsub(/[\s\.\/\\]/, '-').gsub(/[^\w-]/, '').gsub(/[-_]{2,}/, '-').gsub(/^[-_]/, '').gsub(/[-_]$/, '')
    name = time.strftime("%Y-%m-%d-") + slug + '.md'

    # Get the relevant fields as a hash, delete empty fields and convert
    # to YAML for the header
    data = {
       'layout' => 'post',
       'title' => title.to_s,
       'created' => created,
       'categories' => tags.split('|')
     }.delete_if { |k,v| v.nil? || v == ''}.each_pair {
        |k,v| ((v.is_a? String) ? v.force_encoding("UTF-8") : v)
     }.to_yaml

    # Write out the data and content to file
    File.open("#{dir}/#{name}", "w") do |f|
      f.puts data
      f.puts "---"
      f.puts content
    end

    # Make a file to redirect from the old Drupal URL
    if is_published
      aliases = db["SELECT dst FROM #{prefix}url_alias WHERE src = ?", "node/#{node_id}"].all

      aliases.push(:dst => "node/#{node_id}")

      aliases.each do |url_alias|
        FileUtils.mkdir_p url_alias[:dst]
        File.open("#{url_alias[:dst]}/index.md", "w") do |f|
          f.puts "---"
          f.puts "layout: refresh"
          f.puts "refresh_to_post_id: /#{time.strftime("%Y/%m/%d/") + slug}"
          f.puts "---"
        end
      end
    end
  end

  # TODO: Make dirs & files for nodes of type 'page'
  # Make refresh pages for these as well
end

.require_deps ⇒ Object 



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# File 'lib/jekyll-import/importers/drupal6.rb', line 37

def self.require_deps
  JekyllImport.require_with_fallback(%w[
    rubygems
    sequel
    fileutils
    safe_yaml
    mysql
  ])
end

.specify_options(c) ⇒ Object 



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# File 'lib/jekyll-import/importers/drupal6.rb', line 28

def self.specify_options(c)
  c.option 'dbname', '--dbname DB', 'Database name'
  c.option 'user', '--user USER', 'Database user name'
  c.option 'password', '--password PW', "Database user's password (default: '')"
  c.option 'host', '--host HOST', 'Database host name (default: "localhost")'
  c.option 'prefix', '--prefix PREFIX', 'Table prefix name'
  c.option 'types', '--types TYPE1[,TYPE2[,TYPE3...]]', Array, 'The Drupal content types to be imported.'
end

.validate(options) ⇒ Object 



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# File 'lib/jekyll-import/importers/drupal6.rb', line 20

def self.validate(options)
  %w[dbname user].each do |option|
    if options[option].nil?
      abort "Missing mandatory option --#{option}."
    end
  end
end