Lines of code

loc.rb

#!/usr/bin/ruby

def count_lines(filename, type)
  lines = File.read(filename).force_encoding('BINARY').split("\n")
  lines.delete_if {|line| line[/^\s*$/]}
  case type
  when :ruby
    lines.delete_if {|line| line[/^\s*#/]}
  when :go
    lines.delete_if {|line| line[/^\s*\/\/$/]}
  when :cucumber
    lines.delete_if {|line| line[/^\s*#/]}
  when :perl
    lines.delete_if {|line| line[/^\s*#/]}
  when :html
    lines.delete_if {|line| line[/^\s*<!\-\-.*\-\->\s*$/]}
  when :js
    lines.delete_if {|line| line[/^\s*\/\/$/]}
  when :css
    lines.delete_if {|line| line[/^\s*\/\//]}
    lines.delete_if {|line| line[/^\s*\/\*.*\*\/\s*$/]}
  end

  lines.count
end

ruby_lines = 0
cucumber_lines = 0
perl_lines = 0
go_lines = 0
html_lines = 0
css_lines = 0
js_lines = 0

Dir['**/*'].each do |file|
  next if file[%r{^vendor/}]
  next if file[%r{^Godeps/}]
  if File.file?(file)
    if file[/\.rb$/]
      ruby_lines += count_lines(file, :ruby)
    elsif file[/\.go$/]
      go_lines += count_lines(file, :go)
    elsif file[/\.(feature)$/]
      cucumber_lines += count_lines(file, :cucumber)
    elsif file[/\.(pl|pm)$/]
      perl_lines += count_lines(file, :perl)
    elsif file[/\.js(\.erb)?$/]
      js_lines += count_lines(file, :js)
    elsif file[/\.css(\.sass)?$/]
      css_lines += count_lines(file, :css)
    elsif file[/\.html(\.erb)?$/]
      html_lines += count_lines(file, :erb)
    end
  end
end

puts "Ruby: #{ruby_lines}"
puts "Go: #{go_lines}"
puts "Cucumber: #{cucumber_lines}"
puts "HTML: #{html_lines}"
puts "CSS:  #{css_lines}"
puts "JS:   #{js_lines}"
puts "Perl: #{perl_lines}"