Takes a source code repository and makes it into a PDF

code2print.rb

require 'prawn'

dir = '../music-example'
files = Dir.glob("#{dir}/*") + Dir.glob("#{dir}/**/*")

pdf = Prawn::Document.new(:page_size => 'A4')
pdf.font "Courier"

stats = { :files => 0, :lines => 0, :chars => 0 }

files.each do |file|
  next if File.directory?(file)
  next if file =~ /\.(log|jpg|png|sqlite3?|ico|pid)$/
  next if file =~ %r[#{dir}/(spec|test|features|cucumber)]
  next if file =~ /(jquery.js|jquery.min.js|jquery_ujs.js|cucumber)/
  puts file
  
  pdf.start_new_page
  
  pdf.text file.sub("#{dir}/", ''), :align => :center, :size => 8
  pdf.stroke_horizontal_rule
  pdf.move_down 5
  
  contents = File.read(file)
  stats[:files] += 1
  stats[:lines] += contents.split.size
  stats[:chars] += contents.size
  
  formatted = contents.gsub(/^([ \t]+)/m) { |s| Prawn::Text::NBSP * s.size }
  
  pdf.text formatted, :size => 8
end

p stats
pdf.render_file('test.pdf')