#custom filters for Octopress
 
 module OctopressFilters
   def exerpt(input, url, url_text="Reade more…", permalink_text=false)
     if input.index(/<!--\s?more\s?-->/i)
       input.split(/<!--\s?more\s?-->/i)[0] + "<p><a href='#{url}'>#{url_text}</a></p>"
     elsif permalink_text
       input + "<p><a href='#{url}'>#{permalink_text}</a></p>"
     else
       input
     end
   end
   def full_urls(input, url='')
     input.gsub /(\s+(href|src)\s*=\s*["|']{1})(\/[^\"'>]+)/ do
       $1+url+$3
     end
   end

   def search_url(input)
     input.gsub /(http:\/\/)(\S+)/ do
       $2
     end
   end

   def smart_quotes(input)
     require 'rubypants'
     RubyPants.new(input).to_html
   end
   def titlecase(input)
     require 'titlecase'
     input.titlecase
   end

   def datetime(date)

     if date.class == String
       date = Time.parse(date)
     end

     date
   end
   def ordinalize(date)
     date = datetime(date)

     "#{date.strftime('%B')} #{ordinal(date.strftime('%e').to_i)}, #{date.strftime('%Y')}"
   end
   def ordinal(number)
     if (11..13).include?(number.to_i % 100)
       "#{number}<span>th</span>"
     else
       case number.to_i % 10
       when 1; "#{number}<span>st</span>"
       when 2; "#{number}<span>nd<span>"
       when 3; "#{number}<span>rd</span>"
       else    "#{number}<span>th</span>"
       end
     end
   end

   #YearlyPost = Struct.new('YearlyPost', :year, :posts)
   def yearly_posts(site)
     #site.posts.reverse.group_by { |p| p.date.strftime("%Y") }.map { |k,v| YearlyPost.new(k,v) }
     site
   end

 end
 Liquid::Template.register_filter OctopressFilters