Jekyll site development, testing deployment. Run `rake` while developing, run `rake deploy` when you're done

Rakefile

task :default => :server

desc 'Start Jekyll server with --auto'
task :server do
  jekyll('--server --auto')
end

desc 'Build site with Jekyll'
task :build do
  jekyll('--no-auto')

  # Delete files I don't want to deploy
  ['Rakefile', '*.tmproj'].each do |file|
    FileUtils.rm_f("_site/#{file}")
  end
end

desc 'Test site output for Liquid template errors'
task :test => :build do
  errors = `grep --exclude Rakefile -R 'Liquid error:' _site`
  if errors.nil? || errors.empty?
    puts "No errors"
  else
    puts "Errors:"
    puts errors.inspect
    exit 1
  end
end

desc 'Deploy the website publicly'
task :deploy => :test do
  user = 'jamiew'
  host = 'server'
  directory = '~/public_html'
  sh 'rsync -rtzh --progress --delete _site/ #{user}@#{host}:#{directory}'
end

task :deploy_github_pages => :test do
  # TODO echo a warning if you're using plugins, since GH doesn't support them
  # sh 'git push origin master:gh-pages' # behaves oddly :(
  sh 'git push origin gh-pages'
end

def jekyll(opts = '')
  sh 'rm -rf _site'
  sh 'jekyll ' + opts
end