class Haml::Exec::Sass

def set_opts(opts)
  super
  opts.on('--scss',
          'Use the CSS-superset SCSS syntax.') do
    @options[:for_engine][:syntax] = :scss
  end
  opts.on('--watch', 'Watch files or directories for changes.',
                     'The location of the generated CSS can be set using a colon:',
                     '  sass --watch input.sass:output.css',
                     '  sass --watch input-dir:output-dir') do
    @options[:watch] = true
  end
  opts.on('--update', 'Compile files or directories to CSS.',
                      'Locations are set like --watch.') do
    @options[:update] = true
  end
  opts.on('-t', '--style NAME',
          'Output style. Can be nested (default), compact, compressed, or expanded.') do |name|
    @options[:for_engine][:style] = name.to_sym
  end
  opts.on('-q', '--quiet', 'Silence warnings during compilation.') do
    @options[:for_engine][:quiet] = true
  end
  opts.on('-g', '--debug-info',
          'Emit extra information in the generated CSS that can be used by the FireSass Firebug plugin.') do
    @options[:for_engine][:debug_info] = true
  end
  opts.on('-l', '--line-numbers', '--line-comments',
          'Emit comments in the generated CSS indicating the corresponding sass line.') do
    @options[:for_engine][:line_numbers] = true
  end
  opts.on('-i', '--interactive',
          'Run an interactive SassScript shell.') do
    @options[:interactive] = true
  end
  opts.on('-I', '--load-path PATH', 'Add a sass import path.') do |path|
    @options[:for_engine][:load_paths] << path
  end
  opts.on('--cache-location PATH', 'The path to put cached Sass files. Defaults to .sass-cache.') do |loc|
    @options[:for_engine][:cache_location] = loc
  end
  opts.on('-C', '--no-cache', "Don't cache to sassc files.") do
    @options[:for_engine][:cache] = false
  end
  unless ::Haml::Util.ruby1_8?
    opts.on('-E encoding', 'Specify the default encoding for Sass files.') do |encoding|
      Encoding.default_external = encoding
    end
  end
end