codecleaner.rake

require 'erb'

vendored_codecleaner_path = Dir["#{RAILS_ROOT}/vendor/gems/code-cleaner*"].first

options = {
  :path => File.join(vendored_codecleaner_path, "bin"),
  :whitelist => '\.(rb|rake|task|html|js)$',
  :blacklist => '(/vendor/|/gems/|schema.rb)',
  :force => false
}

namespace :codecleaner do

  desc "Install git pre-commit hook for automatically removing trailing whitespace"
  task "git:install" do
    if !options[:force] && File.size?(".git/hooks/pre-commit")
      abort "You must remove .git/hooks/pre-commit first!"
    else
      begin
        puts "Installing .git/hooks/pre-commit ..."
        source = File.join(vendored_codecleaner_path, "support", "pre-commit.erb")
        File.open(".git/hooks/pre-commit", "w") do |file|
          file.puts(ERB.new(File.read(source)).result(binding))
        end
        File.chmod(0755, ".git/hooks/pre-commit")
      rescue Errno::ENOENT
        abort "You have to run git init first!"
      end
    end
  end

  desc "Overwrites existing git pre-commit hook if it exists"
  task "git:install:force" do
    options[:force] = true
    Rake::Task['codecleaner:git:install'].execute
  end

  desc "Remove trailing whitespace and convert tabs to spaces"
  task "clean" do
    `WHITELIST='#{options[:whitelist]}' BLACKLIST='#{options[:blacklist]}' #{options[:path]}/code-cleaner #{RAILS_ROOT}`
  end
end