Gemfile

source 'https://rubygems.org'

gem "puppet", "~> 3"
gem "highline"
gem "ruby-progressbar"
gem "rake"

output.txt

Total Puppetfiles found 10
Parsing with Puppet Version: 3.4.2
Time: 00:00:00 <==================================================================================================================================================================================================================================================> 100% Parsing
10 files total.
10 files succeeded.
0 files failed.

Rakefile

require 'rake'
require 'rake/tasklib'
require 'highline/import'
require 'ruby-progressbar'
require 'puppet'

desc "Parse puppet files"
task :parse do
  puppet_file_list = FileList['**/*.pp']
  successes = 0
  failures = 0
  error_string = ""

  say "Total Puppetfiles found #{puppet_file_list.length}"

  if Integer(Puppet.version.split('.').first) >= 3
    Puppet.initialize_settings
  end

  puts "Parsing with Puppet Version: #{Puppet.version}"

  parse_progress = ProgressBar.create(:title => "Parsing", :format => '%a <%B> %p%% %t',
    :starting_at => 0, :total => puppet_file_list.length)

  puppet_file_list.each_with_index do |puppet_file, index|

    parse_progress.increment

    begin
      parser = Puppet::Parser::Parser.new("rake-parse-#{index}")
      parser.import("#{File.expand_path(puppet_file)}")
      successes += 1
    rescue Puppet::ParseError => e
      error_string += "Parse Error on #{puppet_file}: #{e.message}\n"
      failures += 1
    end
  end

  total_manifests = successes + failures

  say "#{total_manifests} files total."
  say "#{successes} files succeeded."
  say "#{failures} files failed."

  if failures > 0
    say "#{error_string}" 
    fail "#{failures} puppet files failed syntax check."
  end
end