Added script/about to display formatted Rails::Info output

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@2883 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

railties/CHANGELOG

@@ -1,5 +1,7 @@
 *SVN*
 
+* Added script/about to display formatted Rails::Info output [Sam Stephenson]
+
 * Added Rails::Info to catalog assorted information about a Rails application's environment [Sam Stephenson]
 
 * Tail the logfile when running script/lighttpd in the foreground [Sam Stephenson]

railties/Rakefile

@@ -37,7 +37,7 @@ LOG_FILES    = %w( server.log development.log test.log production.log )
 HTML_FILES   = %w( 404.html 500.html index.html robots.txt favicon.ico 
                    javascripts/prototype.js
                    javascripts/effects.js javascripts/dragdrop.js javascripts/controls.js )
-BIN_FILES    = %w( breakpointer console destroy generate performance/benchmarker performance/profiler process/reaper process/spawner process/spinner runner server lighttpd plugin )
+BIN_FILES    = %w( about breakpointer console destroy generate performance/benchmarker performance/profiler process/reaper process/spawner process/spinner runner server lighttpd plugin )
 
 VENDOR_LIBS = %w( actionpack activerecord actionmailer activesupport actionwebservice railties )
 

railties/bin/about

@@ -0,0 +1,3 @@
+#!/usr/local/bin/ruby
+require File.dirname(__FILE__) + '/../config/boot'
+require 'commands/about'

railties/lib/commands/about.rb

@@ -0,0 +1,2 @@
+require 'environment'
+puts Rails::Info

railties/lib/info.rb

@@ -1,7 +1,15 @@
 module Rails
   module Info
     mattr_accessor :properties
-    @@properties = []
+    class << (@@properties = [])
+      def names
+        map {|(name, )| name}
+      end
+      
+      def value_for(property_name)
+        find {|(name, )| name == property_name}.last rescue nil
+      end
+    end
   
     class << self #:nodoc:
       def property(name, value = nil)
@@ -19,10 +27,19 @@ module Rails
         require "#{component}/version"
         "#{component.classify}::Version::STRING".constantize
       end
-      
+    
       def edge_rails_revision
         svn_info[/^Revision: (\d+)/, 1] || 'unknown'
       end
+    
+      def to_s
+        column_width = properties.names.map {|name| name.length}.max
+        ["About your application's environment", *properties.map do |property|
+          "%-#{column_width}s   %s" % property
+        end] * "\n"
+      end
+
+      alias inspect to_s
       
     protected
       def svn_info
@@ -53,6 +70,9 @@ module Rails
       edge_rails_revision
     end
   
+    # The application's location on the filesystem.
+    property 'Application root', File.expand_path(RAILS_ROOT)
+  
     # The current Rails environment (development, test, or production).
     property 'Environment' do
       RAILS_ENV

railties/lib/rails_generator/generators/applications/app/app_generator.rb

@@ -49,7 +49,7 @@ class AppGenerator < Rails::Generator::Base
       m.file "environments/test.rb",        "config/environments/test.rb"
 
       # Scripts
-      %w( breakpointer console destroy generate performance/benchmarker performance/profiler process/reaper process/spawner process/spinner runner server lighttpd plugin ).each do |file|
+      %w( about breakpointer console destroy generate performance/benchmarker performance/profiler process/reaper process/spawner process/spinner runner server lighttpd plugin ).each do |file|
         m.file "bin/#{file}", "script/#{file}", script_options
       end
 

railties/test/info_test.rb

@@ -57,21 +57,17 @@ class InfoTest < Test::Unit::TestCase
   end
 
 protected
-  def property_names
+  def properties
-    Rails::Info.properties.map {|(name, )| name}
+    Rails::Info.properties
   end
-  
+
-  def property_value(property_name)
-    Rails::Info.properties.find {|(name, )| property_name == name}.last
-  end
-  
   def property_defined?(property_name)
-    property_names.include? property_name
+    properties.names.include? property_name
   end
   
   def assert_property(property_name, value)
     raise "Property #{property_name.inspect} not defined" unless 
       property_defined? property_name
-    assert_equal value, property_value(property_name)
+    assert_equal value, properties.value_for(property_name)
   end
 end