Jekyll German Date Filter

german_date.rb

module Jekyll
  module GermanDate
    def german_date(text)
      map = {
        'May' => 'Mai',
        'Oct' => 'Okt',
        'Dec' => 'Dez',

        'January' => 'Januar',
        'February' => 'Februar',
        'March' => 'März',
        'June' => 'Juni',
        'July' => 'Juli',
        'October' => 'Oktober',
        'December' => 'Dezember',

        'Sun' => 'So',
        'Mon' => 'Mo',
        'Tue' => 'Di',
        'Wed' => 'Mi',
        'Thu' => 'Do',
        'Fri' => 'Fr',
        'Sat' => 'Sa',

        'Sunday' => 'Sonntag',
        'Monday' => 'Montag',
        'Tuesday' => 'Dienstag',
        'Wednesday' => 'Mittwoch',
        'Thursday' => 'Donnerstag',
        'Friday' => 'Freitag',
        'Saturday' => 'Samstag'
      }
      map.each {|k,v| text.sub!(k,v)}

      text
    end
  end
end

Liquid::Template.register_filter(Jekyll::GermanDate)