= escape_utils

Being as though we're all html escaping everything these days, why not make it faster?

At the moment escape_utils supports escaping and unescaping of HTML, and Javascript but I wanna add URL encoding soon.

For character encoding in 1.9, we'll return strings in whatever Encoding.default_internal is set to or utf-8 otherwise.

It has monkey-patches for Rack::Utils, CGI, ERB::Util and Haml and ActionView so you can drop this in and have your app start escaping fast as balls in no time

== Installing

  gem install escape_utils

== Usage

=== HTML

==== Escaping

  html = `curl -s http://maps.google.com`
  escaped_html = EscapeUtils.escape_html(html)

==== Unescaping

  html = `curl -s http://maps.google.com`
  escaped_html = EscapeUtils.escape_html(html)
  html = EscapeUtils.unescape_html(escaped_html)

==== Monkey Patches

  require 'escape_utils/html/rack' # to patch Rack::Utils
  require 'escape_utils/html/erb' # to patch ERB::Util
  require 'escape_utils/html/cgi' # to patch CGI
  require 'escape_utils/html/haml' # to patch Haml::Helpers

=== Javascript

==== Escaping

  javascript = `curl -s http://code.jquery.com/jquery-1.4.2.js`
  escaped_javascript = EscapeUtils.escape_javascript(javascript)

==== Monkey Patches

  require 'escape_utils/javascript/action_view' # to patch ActionView::Helpers::JavaScriptHelper

== Benchmarks

In my testing, escaping html is around 10-20x faster than the pure ruby implementations in wide use today.
While unescaping html is around 20-40x faster than CGI.unescapeHTML - also pure ruby.
Escaping Javascript is around 16-30x faster.

This output is from my laptop using the benchmark scripts in the benchmarks folder.

=== HTML

==== Escaping

 Rack::Utils.escape_html
  0.560000   0.040000   0.600000 (  0.589475)
 ERB::Util.html_escape
  0.450000   0.040000   0.490000 (  0.492893)
 CGI.escapeHTML
  0.460000   0.030000   0.490000 (  0.490171)
 Haml::Helpers.html_escape
  0.430000   0.010000   0.440000 (  0.444694)
 EscapeUtils.escape_html
  0.050000   0.010000   0.060000 (  0.054799)

=== Unescaping

 CGI.unescapeHTML
  1.140000   0.010000   1.150000 (  1.148470)
 EscapeUtils.unescape_html
  0.040000   0.000000   0.040000 (  0.046166)

=== Javascript

==== Escaping

 ActionView::Helpers::JavaScriptHelper#escape_javascript
  2.000000   0.020000   2.020000 (  2.023047)
 EscapeUtils.escape_javascript
  0.110000   0.010000   0.120000 (  0.121761)