Independent library extracted from Rails code statistics.

1. Install at the command prompt if you haven't yet:

   gem install code_metrics

• Lines of code statistics for a folder

  • Command-line

    code_metrics

  • As rake task

    require 'code_metrics/statistics'

    rake code_metrics:stats
    # or in Rails (check `rake -W stats` to see what tasks are loading)
    rake stats

  • As a library

    require 'code_metrics/code_statistics'
    dirs = CodeMetrics::StatsDirectories.new
    dirs.add_test_directories('spec/**/*_spec.rb', 'spec') # where the 2nd argument is a required string in the filename
    dirs.add_directories('engines/**/*.rb') # no restrictions on the file name, 2nd argument omitted
    dirs.add_test_directory('Acceptance specs', 'spec/acceptance')
    dirs.directories # outputs an array of [description, folder_path] to run statistics against
    CodeMetrics::Statistics.new(*dirs).to_s
    
    # in Rails
    
    require 'rails/code_statistics'
    {
      'Acceptance' => 'spec/acceptance',
    }.each do |type, dir|
      ::STATS_DIRECTORIES << ["#{name} specs", dir]
      ::CodeStatistics::TEST_TYPES << "#{name} specs"
    end
    CodeStatistics.new(*STATS_DIRECTORIES).to_s

• Lines of code statistics for a list of files

  • As rake task

    require 'code_metrics/line_statistics'

    rake code_metrics:line_statistics[file_pattern] # e.g. ['lib/**/*.rb']

  • As a library

    require 'code_metrics/line_statistics'
    files = FileList["lib/active_record/**/*.rb"]
    CodeMetrics::LineStatistics.new(files).print_loc

• Profiling memory usage of requires. POSIX-only. Requires ps

  • Command-line

    code_metrics-profile <path/to/rubyfile.rb> [optional: ruby-prof mode]

• Code
• Issues, Bug Reports, Suggestions

Released under the MIT License.