# Tag Cloud for Octopress, modified by pf_miles, for use with utf-8 encoded blogs(all regexp added 'u' option).
 # modified by alswl, tag_cloud -> category_cloud
 # =======================
 # 
 # Description:
 # ------------
 # Easy output tag cloud and category list.
 # 
 # Syntax:
 # -------
 #     {% tag_cloud [counter:true] %}
 #     {% category_list [counter:true] %}
 # 
 # Example:
 # --------
 # In some template files, you can add the following markups.
 # 
 # ### source/_includes/custom/asides/tag_cloud.html ###
 # 
 #     <section>
 #       <h1>Tag Cloud</h1>
 #         <span id="tag-cloud">{% tag_cloud %}</span>
 #     </section>
 # 
 # ### source/_includes/custom/asides/category_list.html ###
 # 
 #     <section>
 #       <h1>Categories</h1>
 #         <ul id="category-list">{% category_list counter:true %}</ul>
 #     </section>
 # 
 # Notes:
 # ------
 # Be sure to insert above template files into `default_asides` array in `_config.yml`.
 # And also you can define styles for 'tag-cloud' or 'category-list' in a `.scss` file.
 # (ex: `sass/custom/_styles.scss`)
 # 
 # Licence:
 # --------
 # Distributed under the [MIT License][MIT].
 # 
 # [MIT]: http://www.opensource.org/licenses/mit-license.php
 # 
 module Jekyll
 
   class CategoryCloud < Liquid::Tag
 
     def initialize(tag_name, markup, tokens)
       @opts = {}
       if markup.strip =~ /\s*counter:(\w+)/iu
         @opts['counter'] = ($1 == 'true')
         markup = markup.strip.sub(/counter:\w+/iu,'')
       end
       super
     end
 
     def render(context)
       lists = {}
       max, min = 1, 1
       config = context.registers[:site].config
       category_dir = config['root'] + config['category_dir'] + '/'
       categories = context.registers[:site].categories
       categories.keys.sort_by{ |str| str.downcase }.each do |category|
         count = categories[category].count
         lists[category] = count
         max = count if count > max
       end
 
       html = ''
       lists.each do | category, counter |
         url = category_dir + category.gsub(/_|\P{Word}/u, '-').gsub(/-{2,}/u, '-').downcase
         style = "font-size: #{100 + (60 * Float(counter)/max)}%"
         html << "<a href='#{url}' style='#{style}'>#{category}"
         if @opts['counter']
           html << "(#{categories[category].count})"
         end
         html << "</a> "
       end
       html
     end
   end
 
   class CategoryList < Liquid::Tag
 
     def initialize(tag_name, markup, tokens)
       @opts = {}
       if markup.strip =~ /\s*counter:(\w+)/iu
         @opts['counter'] = ($1 == 'true')
         markup = markup.strip.sub(/counter:\w+/iu,'')
       end
       super
     end
 
     def render(context)
       html = ""
       config = context.registers[:site].config
       category_dir = config['root'] + config['category_dir'] + '/'
       categories = context.registers[:site].categories
       categories.keys.sort_by{ |str| str.downcase }.each do |category|
         url = category_dir + category.gsub(/_|\P{Word}/u, '-').gsub(/-{2,}/u, '-').downcase
         html << "<li><a href='#{url}'>#{category}"
         if @opts['counter']
           html << " (#{categories[category].count})"
         end
         html << "</a></li>"
       end
       html
     end
   end
 
 end
 
 Liquid::Template.register_tag('category_cloud', Jekyll::CategoryCloud)
 Liquid::Template.register_tag('category_list', Jekyll::CategoryList)