Code Statistics in Conductor

app/controllers/conductor/satistics_controller.rb

@@ -0,0 +1,20 @@
+require 'rails/code_statistics'
+
+STATS_DIRECTORIES = [
+  %w(Controllers        app/controllers),
+  %w(Helpers            app/helpers),
+  %w(Models             app/models),
+  %w(Libraries          lib/),
+  %w(APIs               app/apis),
+  %w(Integration\ tests test/integration),
+  %w(Functional\ tests  test/functional),
+  %w(Unit\ tests        test/unit)
+].collect { |name, dir| [ name, "#{Rails.root}/#{dir}" ] }.select { |name, dir| File.directory?(dir) }
+
+module Conductor
+  class StatisticsController < ApplicationController
+    def index
+      @stats = Conductor::CodeStatistics.new(*STATS_DIRECTORIES)
+    end
+  end
+end

app/models/conductor/code_statistics.rb

@@ -0,0 +1,89 @@
+TEST_TYPES = %w(Units Functionals Unit\ tests Functional\ tests Integration\ tests)
+module Conductor
+  class CodeStatistics #:nodoc:
+    attr_reader :pairs
+
+    def initialize(*pairs)
+      @pairs = pairs
+    end
+
+    def lines
+      @pairs.collect do |pair|
+        line(pair.first, statistics[pair.first])
+      end
+    end
+
+    def total_line
+      line("Total", calculate_total)
+    end
+
+    def statistics
+      @pairs.inject({}) do |stats, pair|
+        stats[pair.first] = calculate_directory_statistics(pair.last)
+        stats
+      end
+    end
+
+    def calculate_directory_statistics(directory, pattern = /.*\.rb$/)
+      stats = { "lines" => 0, "codelines" => 0, "classes" => 0, "methods" => 0 }
+
+      Dir.foreach(directory) do |file_name|
+        if File.stat(directory + "/" + file_name).directory? and (/^\./ !~ file_name)
+          newstats = calculate_directory_statistics(directory + "/" + file_name, pattern)
+          stats.each { |k, v| stats[k] += newstats[k] }
+        end
+
+        next unless file_name =~ pattern
+
+        f = File.open(directory + "/" + file_name)
+
+        while line = f.gets
+          stats["lines"]     += 1
+          stats["classes"]   += 1 if line =~ /class [A-Z]/
+          stats["methods"]   += 1 if line =~ /def [a-z]/
+          stats["codelines"] += 1 unless line =~ /^\s*$/ || line =~ /^\s*#/
+        end
+      end
+
+      stats
+    end
+
+    def calculate_total
+      total = { "lines" => 0, "codelines" => 0, "classes" => 0, "methods" => 0 }
+      statistics.each_value { |pair| pair.each { |k, v| total[k] += v } }
+      total
+    end
+
+    def code_loc
+      code_loc = 0
+      statistics.each { |k, v| code_loc += v['codelines'] unless TEST_TYPES.include? k }
+      code_loc
+    end
+
+    def tests_loc
+      test_loc = 0
+      statistics.each { |k, v| test_loc += v['codelines'] if TEST_TYPES.include? k }
+      test_loc
+    end
+
+    def line(name, statistics)
+      m_over_c   = (statistics["methods"] / statistics["classes"])   rescue m_over_c = 0
+      loc_over_m = (statistics["codelines"] / statistics["methods"]) - 2 rescue loc_over_m = 0
+
+      {
+        :name => name,
+        :lines => statistics["lines"],
+        :codelines => statistics["codelines"],
+        :classes => statistics["classes"],
+        :methods => statistics["methods"],
+        :m_over_c => m_over_c,
+        :loc_over_m => loc_over_m
+      }
+    end
+
+    def code_to_test
+      tests_loc.to_f/code_loc
+    end
+
+  end
+end

app/views/conductor/statistics/index.html.erb

@@ -0,0 +1,46 @@
+<h1>Statistics</h1>
+
+<table>
+  <tr>
+    <th>Name</th>
+    <th>Lines</th>
+    <th>LOC</th>
+    <th>Classes</th>
+    <th>Methods</th>
+    <th>M/C</th>
+    <th>LOC/M</th>
+  </tr>
+  <% @stats.lines.each do |line| %>
+    <tr class="statistic">
+      <th><%= line[:name] %></th>
+      <td><%= line[:lines] %></td>
+      <td><%= line[:codelines] %></td>
+      <td><%= line[:classes] %></td>
+      <td><%= line[:methods] %></td>
+      <td><%= line[:m_over_c] %></td>
+      <td><%= line[:loc_over_m] %></td>
+    </tr>
+  <% end %>
+
+  <%
+    if @stats.pairs.length > 1
+    line = @stats.total_line
+  %>
+    <tr class="statistic">
+      <th><%= line[:name] %></th>
+      <td><%= line[:lines] %></td>
+      <td><%= line[:codelines] %></td>
+      <td><%= line[:classes] %></td>
+      <td><%= line[:methods] %></td>
+      <td><%= line[:m_over_c] %></td>
+      <td><%= line[:loc_over_m] %></td>
+    </tr>
+  <% end %>
+</table>
+
+<br>
+<table>
+<tr class="statistic"><th>Code LOC</th><td><%= @stats.code_loc %></td></tr>
+<tr class="statistic"><th>Test LOC</th><td><%= @stats.tests_loc %></td></tr>
+<tr class="statistic"><th>Code to Test Ratio</th><td>1:<%= @stats.code_to_test %></td></tr>
+</table>

app/views/layouts/conductor/application.html.erb

@@ -47,7 +47,7 @@
           <ul class="links">
             <li><%= link_to("Routes", conductor_routes_path) %></li>
             <li><%= link_to("Annotations", conductor_annotations_path) %></li>
-            <li>Statistics</li>
+            <li><%= link_to("Statistics", conductor_statistics_path) %></li>
           </ul>
         </li>
 

config/routes.rb

@@ -1,5 +1,5 @@
 Rails.application.routes.draw do
   namespace :conductor do
-    resources :scaffolds, :routes, :annotations
+    resources :scaffolds, :routes, :annotations, :statistics
   end
 end

public/stylesheets/conductor.css

@@ -100,4 +100,16 @@ a:hover {
 }
 #sidebar ul.links li {
   margin-bottom: 5px;
-}
+}
+
+tr.statistic th {
+  text-align: left;
+}
+
+tr.statistic th {
+  text-align: left;
+}
+
+tr.statistic td {
+  text-align: right;
+}