--- /dev/null
+require 'erb'
+
+class ERB
+ module Util
+ HTML_ESCAPE = { '&' => '&', '>' => '>', '<' => '<', '"' => '"' }
+ 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 > 0 & a < 10?
+ def html_escape(s)
+ s.to_s.gsub(/[&"><]/) { |special| HTML_ESCAPE[special] }
+ end
+
+ # 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
+ module_function :j
+ module_function :json_escape
+ end
+end
+
+module ActionView
+ module TemplateHandlers
+ class ERB < TemplateHandler
+ include Compilable
+
+ # Specify trim mode for the ERB compiler. Defaults to '-'.
+ # See ERb documentation for suitable values.
+ cattr_accessor :erb_trim_mode
+ self.erb_trim_mode = '-'
+
+ def compile(template)
+ src = ::ERB.new("<% __in_erb_template=true %>#{template.source}", nil, erb_trim_mode, '@output_buffer').src
+
+ # Ruby 1.9 prepends an encoding to the source. However this is
+ # useless because you can only set an encoding on the first line
+ RUBY_VERSION >= '1.9' ? src.sub(/\A#coding:.*\n/, '') : src
+ end
+ end
+ end
+end