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@@ -0,0 +1,203 @@
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+== Welcome to Rails
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+
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+Rails is a web-application and persistence framework that includes everything
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+needed to create database-backed web-applications according to the
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+Model-View-Control pattern of separation. This pattern splits the view (also
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+called the presentation) into "dumb" templates that are primarily responsible
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+for inserting pre-built data in between HTML tags. The model contains the
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+"smart" domain objects (such as Account, Product, Person, Post) that holds all
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+the business logic and knows how to persist themselves to a database. The
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+controller handles the incoming requests (such as Save New Account, Update
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+Product, Show Post) by manipulating the model and directing data to the view.
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+
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+In Rails, the model is handled by what's called an object-relational mapping
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+layer entitled Active Record. This layer allows you to present the data from
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+database rows as objects and embellish these data objects with business logic
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+methods. You can read more about Active Record in
0
+link:files/vendor/rails/activerecord/README.html.
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+
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+The controller and view are handled by the Action Pack, which handles both
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+layers by its two parts: Action View and Action Controller. These two layers
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+are bundled in a single package due to their heavy interdependence. This is
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+unlike the relationship between the Active Record and Action Pack that is much
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+more separate. Each of these packages can be used independently outside of
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+Rails.  You can read more about Action Pack in
0
+link:files/vendor/rails/actionpack/README.html.
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+
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+
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+== Getting Started
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+
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+1. At the command prompt, start a new Rails application using the <tt>rails</tt> command
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+   and your application name. Ex: rails myapp
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+   (If you've downloaded Rails in a complete tgz or zip, this step is already done)
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+2. Change directory into myapp and start the web server: <tt>script/server</tt> (run with --help for options)
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+3. Go to http://localhost:3000/ and get "Welcome aboard: You’re riding the Rails!"
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+4. Follow the guidelines to start developing your application
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+
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+
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+== Web Servers
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+
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+By default, Rails will try to use Mongrel and lighttpd if they are installed, otherwise
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+Rails will use WEBrick, the webserver that ships with Ruby. When you run script/server,
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+Rails will check if Mongrel exists, then lighttpd and finally fall back to WEBrick. This ensures
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+that you can always get up and running quickly.
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+
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+Mongrel is a Ruby-based webserver with a C component (which requires compilation) that is
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+suitable for development and deployment of Rails applications. If you have Ruby Gems installed,
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+getting up and running with mongrel is as easy as: <tt>gem install mongrel</tt>.
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+More info at: http://mongrel.rubyforge.org
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+
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+If Mongrel is not installed, Rails will look for lighttpd. It's considerably faster than
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+Mongrel and WEBrick and also suited for production use, but requires additional
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+installation and currently only works well on OS X/Unix (Windows users are encouraged
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+to start with Mongrel). We recommend version 1.4.11 and higher. You can download it from
0
+http://www.lighttpd.net.
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+
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+And finally, if neither Mongrel or lighttpd are installed, Rails will use the built-in Ruby
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+web server, WEBrick. WEBrick is a small Ruby web server suitable for development, but not
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+for production.
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+
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+But of course its also possible to run Rails on any platform that supports FCGI.
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+Apache, LiteSpeed, IIS are just a few. For more information on FCGI,
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+please visit: http://wiki.rubyonrails.com/rails/pages/FastCGI
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+
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+
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+== Debugging Rails
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+
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+Sometimes your application goes wrong.  Fortunately there are a lot of tools that
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+will help you debug it and get it back on the rails.
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+
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+First area to check is the application log files.  Have "tail -f" commands running
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+on the server.log and development.log. Rails will automatically display debugging
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+and runtime information to these files. Debugging info will also be shown in the
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+browser on requests from 127.0.0.1.
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+
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+You can also log your own messages directly into the log file from your code using
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+the Ruby logger class from inside your controllers. Example:
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+
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+  class WeblogController < ActionController::Base
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+    def destroy
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+      @weblog = Weblog.find(params[:id])
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+      @weblog.destroy
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+      logger.info("#{Time.now} Destroyed Weblog ID ##{@weblog.id}!")
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+    end
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+  end
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+
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+The result will be a message in your log file along the lines of:
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+
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+  Mon Oct 08 14:22:29 +1000 2007 Destroyed Weblog ID #1
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+
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+More information on how to use the logger is at http://www.ruby-doc.org/core/
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+
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+Also, Ruby documentation can be found at http://www.ruby-lang.org/ including:
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+
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+* The Learning Ruby (Pickaxe) Book: http://www.ruby-doc.org/docs/ProgrammingRuby/
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+* Learn to Program: http://pine.fm/LearnToProgram/  (a beginners guide)
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+
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+These two online (and free) books will bring you up to speed on the Ruby language
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+and also on programming in general.
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+
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+
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+== Debugger
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+
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+Debugger support is available through the debugger command when you start your Mongrel or
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+Webrick server with --debugger. This means that you can break out of execution at any point
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+in the code, investigate and change the model, AND then resume execution! Example:
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+
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+  class WeblogController < ActionController::Base
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+    def index
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+      @posts = Post.find(:all)
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+      debugger
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+    end
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+  end
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+
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+So the controller will accept the action, run the first line, then present you
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+with a IRB prompt in the server window. Here you can do things like:
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+
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+  >> @posts.inspect
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+  => "[#<Post:0x14a6be8 @attributes={\"title\"=>nil, \"body\"=>nil, \"id\"=>\"1\"}>,
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+       #<Post:0x14a6620 @attributes={\"title\"=>\"Rails you know!\", \"body\"=>\"Only ten..\", \"id\"=>\"2\"}>]"
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+  >> @posts.first.title = "hello from a debugger"
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+  => "hello from a debugger"
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+
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+...and even better is that you can examine how your runtime objects actually work:
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+
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+  >> f = @posts.first
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+  => #<Post:0x13630c4 @attributes={"title"=>nil, "body"=>nil, "id"=>"1"}>
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+  >> f.
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+  Display all 152 possibilities? (y or n)
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+
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+Finally, when you're ready to resume execution, you enter "cont"
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+
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+
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+== Console
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+
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+You can interact with the domain model by starting the console through <tt>script/console</tt>.
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+Here you'll have all parts of the application configured, just like it is when the
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+application is running. You can inspect domain models, change values, and save to the
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+database. Starting the script without arguments will launch it in the development environment.
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+Passing an argument will specify a different environment, like <tt>script/console production</tt>.
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+
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+To reload your controllers and models after launching the console run <tt>reload!</tt>
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+
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+
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+== Description of Contents
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+
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+app
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+  Holds all the code that's specific to this particular application.
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+
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+app/controllers
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+  Holds controllers that should be named like weblogs_controller.rb for
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+  automated URL mapping. All controllers should descend from ApplicationController
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+  which itself descends from ActionController::Base.
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+
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+app/models
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+  Holds models that should be named like post.rb.
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+  Most models will descend from ActiveRecord::Base.
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+
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+app/views
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+  Holds the template files for the view that should be named like
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+  weblogs/index.erb for the WeblogsController#index action. All views use eRuby
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+  syntax.
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+
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+app/views/layouts
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+  Holds the template files for layouts to be used with views. This models the common
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+  header/footer method of wrapping views. In your views, define a layout using the
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+  <tt>layout :default</tt> and create a file named default.erb. Inside default.erb,
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+  call <% yield %> to render the view using this layout.
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+
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+app/helpers
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+  Holds view helpers that should be named like weblogs_helper.rb. These are generated
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+  for you automatically when using script/generate for controllers. Helpers can be used to
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+  wrap functionality for your views into methods.
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+
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+config
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+  Configuration files for the Rails environment, the routing map, the database, and other dependencies.
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+
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+db
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+  Contains the database schema in schema.rb.  db/migrate contains all
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+  the sequence of Migrations for your schema.
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+
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+doc
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+  This directory is where your application documentation will be stored when generated
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+  using <tt>rake doc:app</tt>
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+
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+lib
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+  Application specific libraries. Basically, any kind of custom code that doesn't
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+  belong under controllers, models, or helpers. This directory is in the load path.
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+
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+public
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+  The directory available for the web server. Contains subdirectories for images, stylesheets,
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+  and javascripts. Also contains the dispatchers and the default HTML files. This should be
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+  set as the DOCUMENT_ROOT of your web server.
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+
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+script
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+  Helper scripts for automation and generation.
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+
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+test
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+  Unit and functional tests along with fixtures. When using the script/generate scripts, template
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+  test files will be generated for you and placed in this directory.
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+
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+vendor
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+  External libraries that the application depends on. Also includes the plugins subdirectory.
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+  This directory is in the load path.

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@@ -0,0 +1,10 @@
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+# Add your own tasks in files placed in lib/tasks ending in .rake,
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+# for example lib/tasks/capistrano.rake, and they will automatically be available to Rake.
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+
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+require(File.join(File.dirname(__FILE__), 'config', 'boot'))
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+
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+require 'rake'
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+require 'rake/testtask'
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+require 'rake/rdoctask'
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+
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+require 'tasks/rails'

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@@ -0,0 +1,10 @@
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+# Filters added to this controller apply to all controllers in the application.
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+# Likewise, all the methods added will be available for all controllers.
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+
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+class ApplicationController < ActionController::Base
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+  helper :all # include all helpers, all the time
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+
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+  # See ActionController::RequestForgeryProtection for details
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+  # Uncomment the :secret if you're not using the cookie session store
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+  protect_from_forgery # :secret => 'fde83f3dfd7e2a0a7fad3af41b202335'
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+end

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@@ -0,0 +1,37 @@
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+class ComparisonsController < ApplicationController
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+  
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+  def index
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+    @comparisons = Comparison.find(:all)
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+  end
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+  
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+  def new
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+     @comparison = Comparison.new
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+  end
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+  
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+  def create
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+    @comparison = Comparison.create(params[:comparison])
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+    if @comparison.valid?
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+      redirect_to @comparison
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+    else
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+      render :action => :new
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+    end
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+  end
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+  
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+  def show
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+    @comparison = Comparison.find(params[:id], :include => :results)
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+  end
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+  
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+  def edit
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+    @comparison = Comparison.find(params[:id])
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+  end
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+  
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+  def update
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+    @comparison = Comparison.find(params[:id])
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+    if @comparison.update_attributes(params[:comparison])
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+      redirect_to @comparison
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+    else
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+      render :action => :edit
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+    end
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+  end
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+  
0
+end

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@@ -0,0 +1,2 @@
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+class ResultsController < ApplicationController
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+end

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@@ -0,0 +1,3 @@
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+# Methods added to this helper will be available to all templates in the application.
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+module ApplicationHelper
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+end

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@@ -0,0 +1,40 @@
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+module ComparisonsHelper
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+
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+  attr_accessor :lines_to_style
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+
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+  def format_code(input, html_options={})
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+    return nil if input.blank?
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+    content_tag(:dl, format_lines(input.split(/\r?\n/)).join, html_options)
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+  end
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+  
0
+  def format_output(input, html_options={})
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+    return nil if input.blank?
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+    content_tag(:dl, format_lines(input.split(/\r?\n/), :errors => true).join, html_options)
0
+  end
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+  
0
+  def format_lines(lines, options={})
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+    output = []
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+    in_error = false
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+    lines.each_with_index do |line, offset|
0
+      classes = ["line_#{offset + 1}"]
0
+      if options[:errors] && line =~ /^-:(\d+):/
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+        in_error = true
0
+        classes << "code_error code_error_line_#{$1}"
0
+      end
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+      classes << 'error' if in_error
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+      output << content_tag(:dt, offset + 1) <<
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+                content_tag(:dd, line, :class => classes.join(' '))
0
+      in_error = false if options[:errors] && in_error && line =~ /\^/
0
+    end
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+    output
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+  end
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+  
0
+  def show_output(text)
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+    if text.blank?
0
+      content_tag(:td, 'No output', :class => :blank)
0
+    else
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+      content_tag(:td, format_output(text))
0
+    end
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+  end
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+    
0
+end

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@@ -0,0 +1,2 @@
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+module ResultsHelper
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+end

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@@ -0,0 +1,62 @@
0
+require 'open4'
0
+
0
+class Comparison < ActiveRecord::Base
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+  
0
+  VERSIONS = {
0
+    '1.8' => '/usr/bin/ruby',
0
+    '1.9' => '/usr/local/bin/ruby1.9'
0
+  }
0
+  
0
+  has_many :results, :order => 'version asc'
0
+  
0
+  validates_presence_of :name
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+  validates_presence_of :code
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+  
0
+  after_save :execute
0
+  
0
+  attr_reader :file
0
+  def file=(io)
0
+    if !io.blank? && !@read_file
0
+      write_attribute(:code, io.read)
0
+      @read_file = true
0
+    end
0
+  end
0
+  
0
+  def same?(field=nil)
0
+    if field
0
+      results.map { |r| r.__send__(field) }.uniq.size == 1
0
+    else
0
+      results.each do |r1|
0
+        results.each do |r2|
0
+          return false unless r1 == r2
0
+        end
0
+      end
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+      true
0
+    end
0
+  end
0
+  
0
+  #######
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+  private
0
+  #######
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+
0
+  def execute
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+    results.destroy_all
0
+    VERSIONS.each do |number, executable|
0
+      results.create(result_for(executable).merge(:version => number))
0
+    end
0
+  end
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+  
0
+  def result_for(executable)
0
+    record = {}
0
+    status = Open4::popen4(executable) { |pid, stdin, stdout, stderr|
0
+      stdin.puts code
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+      stdin.close
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+      record.update(
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+        :stdout => stdout.read.strip,
0
+        :stderr => stderr.read.strip
0
+      )
0
+    }
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+    record.merge(:exit_code => status.exitstatus.to_i)
0
+  end
0
+  
0
+end

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@@ -0,0 +1,17 @@
0
+class Result < ActiveRecord::Base
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+  
0
+  include Comparable
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+  
0
+  validates_presence_of :version
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+  validates_presence_of :exit_code
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+  
0
+  def <=>(other)
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+    fields = %w(exit_code stdout stderr)
0
+    if fields.all? { |f| self.__send__(f) == other.__send__(f) }
0
+      0
0
+    else
0
+      1
0
+    end
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+  end
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+    
0
+end

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@@ -0,0 +1,7 @@
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+<tr>
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+  <td><%= link_to comparison.name, comparison %></td>
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+  <td><%= truncate(comparison.description) unless comparison.description.blank? %></td>
0
+  <td><%= comparison.same?(:exit_code) ? 'Same' : 'Different' %></td>
0
+  <td><%= comparison.same?(:stdout) ? 'Same' : 'Different' %></td>
0
+  <td><%= comparison.same?(:stderr) ? 'Same' : 'Different' %></td>
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+</tr>
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\ No newline at end of file

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@@ -0,0 +1,23 @@
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+<%= error_messages_for :comparison %>
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+<% form_for @comparison, :html => {:multipart => true} do |f| %>
0
+  <ul>
0
+    <li>
0
+      <label for='comparison_name'>Name:</label>
0
+      <%= f.text_field :name %>
0
+    </li>
0
+    <li>
0
+      <label for='comparison_description'>Description</label><br/>
0
+      <%= f.text_area :description, :cols => 80, :rows => 5 %>
0
+    </li>
0
+    <li>
0
+      <label for='comparison_code'>Code</label><br/>
0
+      <%= f.text_area :code, :cols => 80, :rows => 5 %><br>
0
+      <p>
0
+        or upload a file:
0
+        <%= f.file_field :file %>
0
+      </p>
0
+    </li>
0
+    <p>The code will be executed on Ruby <%= Comparison::VERSIONS.keys.sort.to_sentence %>.</p>
0
+    <%= submit_tag "Save" %>
0
+  </ul>
0
+<% end %>
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\ No newline at end of file

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@@ -0,0 +1,3 @@
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+<h2>Edit `<%= @comparison.name %>'</h2>
0
+
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+<%= render :partial => 'form' %>
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\ No newline at end of file

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@@ -0,0 +1,20 @@
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+<h2>Comparisons</h2>
0
+
0
+<p><%= link_to "New Comparison", new_comparison_path %></p>
0
+
0
+<table id='comparisons'>
0
+  <thead>
0
+    <tr>
0
+      <th>Name</th>
0
+      <th>Description</th>
0
+      <th>Exit Code</th>
0
+      <th>Standard Output</th>
0
+      <th>Standard Error</th>
0
+    </tr>
0
+  </thead>
0
+  <tbody>
0
+    <%= render :partial => @comparisons %>
0
+  </tbody>
0
+</table>
0
+      
0
+      
0
\ No newline at end of file

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@@ -0,0 +1,2 @@
0
+<h2>New Comparison</h2>
0
+<%= render :partial => 'form' %>
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\ No newline at end of file

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@@ -0,0 +1,43 @@
0
+<h2><%= @comparison.name %></h2>
0
+
0
+<%= link_to "All Comparisons", comparisons_path %>
0
+<%= link_to "Edit this Comparison", edit_comparison_path %>
0
+
0
+
0
+<% unless @comparison.description.blank? %>
0
+  <div id='description'><%= textilize @comparison.description %></div>
0
+<% end %>
0
+
0
+<%= format_code @comparison.code, :id => :code %>
0
+
0
+<table>
0
+  <thead>
0
+    <tr id='versions'>
0
+      <th class='hide'>&nbsp;</th>
0
+      <% @comparison.results.each do |result| %>
0
+        <th><%= result.version %></th>
0
+      <% end %>
0
+    </tr>
0
+  </thead>
0
+  <tbody>
0
+    <tr id='exit_code'>
0
+      <th>Exit Code</th>
0
+      <% @comparison.results.each do |result| %>
0
+        <td class='<%= result.exit_code == 0 ? 'good' : 'bad' %>'><%= result.exit_code %></td>
0
+      <% end %>
0
+    </tr>
0
+    <tr id='stdout'>
0
+      <th>Standard Out</th>
0
+      <% @comparison.results.each do |result| %>
0
+        <%= show_output result.stdout  %>
0
+      <% end %>
0
+    </tr>
0
+    <tr id='stderr'>
0
+      <th>Standard Error</th>
0
+      <% @comparison.results.each do |result| %>
0
+        <%= show_output result.stderr %>
0
+      <% end %>
0
+    </tr>
0
+  </tbody>
0
+</table>
0
+      
0
\ No newline at end of file

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@@ -0,0 +1,11 @@
0
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
0
+  "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
0
+<html>
0
+  <head>
0
+    <meta http-equiv="Content-type" content="text/html; charset=utf-8">
0
+    <title>Compare</title>
0
+    <%= stylesheet_link_tag 'application' %>
0
+    <%= javascript_include_tag 'jquery', 'application' %>
0
+  </head>
0
+  <body><div id='content'><%= yield %></div></body>
0
+</html>
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\ No newline at end of file

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@@ -0,0 +1,109 @@
0
+# Don't change this file!
0
+# Configure your app in config/environment.rb and config/environments/*.rb
0
+
0
+RAILS_ROOT = "#{File.dirname(__FILE__)}/.." unless defined?(RAILS_ROOT)
0
+
0
+module Rails
0
+  class << self
0
+    def boot!
0
+      unless booted?
0
+        preinitialize
0
+        pick_boot.run
0
+      end
0
+    end
0
+
0
+    def booted?
0
+      defined? Rails::Initializer
0
+    end
0
+
0
+    def pick_boot
0
+      (vendor_rails? ? VendorBoot : GemBoot).new
0
+    end
0
+
0
+    def vendor_rails?
0
+      File.exist?("#{RAILS_ROOT}/vendor/rails")
0
+    end
0
+
0
+    # FIXME : Ruby 1.9
0
+    def preinitialize
0
+      load(preinitializer_path) if File.exists?(preinitializer_path)
0
+    end
0
+
0
+    def preinitializer_path
0
+      "#{RAILS_ROOT}/config/preinitializer.rb"
0
+    end
0
+  end
0
+
0
+  class Boot
0
+    def run
0
+      load_initializer
0
+      Rails::Initializer.run(:set_load_path)
0
+    end
0
+  end
0
+
0
+  class VendorBoot < Boot
0
+    def load_initializer
0
+      require "#{RAILS_ROOT}/vendor/rails/railties/lib/initializer"
0
+    end
0
+  end
0
+
0
+  class GemBoot < Boot
0
+    def load_initializer
0
+      self.class.load_rubygems
0
+      load_rails_gem
0
+      require 'initializer'
0
+    end
0
+
0
+    def load_rails_gem
0
+      if version = self.class.gem_version
0
+        gem 'rails', version
0
+      else
0
+        gem 'rails'
0
+      end
0
+    rescue Gem::LoadError => load_error
0
+      $stderr.puts %(Missing the Rails #{version} gem. Please `gem install -v=#{version} rails`, update your RAILS_GEM_VERSION setting in config/environment.rb for the Rails version you do have installed, or comment out RAILS_GEM_VERSION to use the latest version installed.)
0
+      exit 1
0
+    end
0
+
0
+    class << self
0
+      def rubygems_version
0
+        Gem::RubyGemsVersion if defined? Gem::RubyGemsVersion
0
+      end
0
+
0
+      def gem_version
0
+        if defined? RAILS_GEM_VERSION
0
+          RAILS_GEM_VERSION
0
+        elsif ENV.include?('RAILS_GEM_VERSION')
0
+          ENV['RAILS_GEM_VERSION']
0
+        else
0
+          parse_gem_version(read_environment_rb)
0
+        end
0
+      end
0
+
0
+      def load_rubygems
0
+        require 'rubygems'
0
+
0
+        unless rubygems_version >= '0.9.4'
0
+          $stderr.puts %(Rails requires RubyGems >= 0.9.4 (you have #{rubygems_version}). Please `gem update --system` and try again.)