gem 'activesupport', ">= 2.3.2"
 require 'active_support'
 require 'rubypants'
 
 module Helpers
   module EscapeHelper
     HTML_ESCAPE = { '&' => '&amp; ',  '>' => '&gt;',   '<' => '&lt;', '"' => '&quot;' }
     JSON_ESCAPE = { '&' => '\u0026 ', '>' => '\u003E', '<' => '\u003C' }
     
     # A utility method for escaping HTML tag characters.
     # This method is also aliased as <tt>h</tt>.
     #
     # In your ERb templates, use this method to escape any unsafe content. For example:
     #   <%=h @person.name %>
     #
     # ==== Example:
     #   puts html_escape("is a > 0 & a < 10?")
     #   # => is a &gt; 0 &amp; a &lt; 10?
     def html_escape(html)
       html.to_s.gsub(/[&"><]/) { |special| HTML_ESCAPE[special] }
     end
     def escape_once(html)
       html.to_s.gsub(/[\"><]|&(?!([a-zA-Z]+|(#\d+));)/) { |special| HTML_ESCAPE[special] }
     end
     alias h escape_once
     
     # A utility method for escaping HTML entities in JSON strings.
     # This method is also aliased as <tt>j</tt>.
     #
     # In your ERb templates, use this method to escape any HTML entities:
     #   <%=j @person.to_json %>
     #
     # ==== Example:
     #   puts json_escape("is a > 0 & a < 10?")
     #   # => is a \u003E 0 \u0026 a \u003C 10?
     def json_escape(s)
       s.to_s.gsub(/[&"><]/) { |special| JSON_ESCAPE[special] }
     end
     
     alias j json_escape
   end
   include EscapeHelper
   
   module ParamsHelper
     def params
       @params ||= begin
         q = request.query.dup
         q.each { |(k,v)| q[k.to_s.intern] = v }
         q
       end
     end
   end
   include ParamsHelper
   
   module TagHelper
     def content_tag(name, content, html_options={})
       %{<#{name}#{html_attributes(html_options)}>#{content}</#{name}>}
     end
     
     def tag(name, html_options={})
       %{<#{name}#{html_attributes(html_options)} />}
     end
     
     def image_tag(src, html_options = {})
       tag(:img, html_options.merge({:src=>src}))
     end
     
     def javascript_tag(content = nil, html_options = {})
       content_tag(:script, javascript_cdata_section(content), html_options.merge(:type => "text/javascript"))
     end
     
     def link_to(name, href, html_options = {})
       html_options = html_options.stringify_keys
       confirm = html_options.delete("confirm")
       onclick = "if (!confirm('#{html_escape(confirm)}')) return false;" if confirm
       content_tag(:a, name, html_options.merge(:href => href, :onclick=>onclick))
     end
     
     def link_to_function(name, *args, &block)
       html_options = {}
       html_options = args.pop if args.last.is_a? Hash
       function = args[0] || ''
       onclick = "#{"#{html_options[:onclick]}; " if html_options[:onclick]}#{function}; return false;"
       href = html_options[:href] || '#'
       content_tag(:a, name, html_options.merge(:href => href, :onclick => onclick))
     end
     
     private
     
       def cdata_section(content)
         "<![CDATA[#{content}]]>"
       end
       
       def javascript_cdata_section(content) #:nodoc:
         "\n//#{cdata_section("\n#{content}\n//")}\n"
       end
       
       def html_attributes(options)
         unless options.blank?
           attrs = []
           options.each_pair do |key, value|
             if value == true
               attrs << %(#{key}="#{key}") if value
             else
               attrs << %(#{key}="#{value}") unless value.nil?
             end
           end
           " #{attrs.sort * ' '}" unless attrs.empty?
         end
       end
   end
   include TagHelper
   
   # My added helpers
   

   def to_html_email(address)
     email = string_to_html(address)
     "<a href=\"#{string_to_html('mailto:')}#{email}\">#{email}</a>"
   end
 
   def string_to_html(s)
     s.strip.unpack("C*").map{|ch| "&#" + ch.to_s + ";" }.to_s
   end
   

   def show_part (file)
     data = ''
     f = File.open(Dir.pwd+"/source/"+file)
     f.each_line do |line|
       data += line
     end
     data
   end
   

   def shorten_words (string, word_limit = 25)
     words = string.split(/\s/)
     if words.size >= word_limit
       words[0,(word_limit-1)].join(" ") + '…'
     else 
       string
     end
   end
   
   def shorten (string, char_limit = 55)
     chars = string.scan(/.{1,1}/)
     if chars.size >= char_limit
       chars[0,(char_limit-1)].join + '…'
     else
       "blah2"
     end
   end
   

   def absolute_url(input, url)
     input.gsub(/(href|src)(\s*=\s*)(["'])(\/.*?)\3/) { $1 + $2 + $3 + url + $4 + $3 }

   end
   
   def rp(input)
     RubyPants.new(input).to_html
   end
   def style_amp(input)
     input.gsub(" & "," <span class='amp'>&</span> ")
   end
 end