class Sass::Exec::Sass

def set_opts(opts)
  super
  opts.banner = <<END
 #{default_syntax} [options] [INPUT] [OUTPUT]
ption:
erts SCSS or Sass files to CSS.
s:
  if @default_syntax == :sass
    opts.on('--scss',
            'Use the CSS-superset SCSS syntax.') do
      @options[:for_engine][:syntax] = :scss
    end
  else
    opts.on('--sass',
            'Use the Indented syntax.') do
      @options[:for_engine][:syntax] = :sass
    end
  end
  opts.on('--watch', 'Watch files or directories for changes.',
                     'The location of the generated CSS can be set using a colon:',
                     "  #{@default_syntax} --watch input.#{@default_syntax}:output.css",
                     "  #{@default_syntax} --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('--stop-on-error', 'If a file fails to compile, exit immediately.',
                             'Only meaningful for --watch and --update.') do
    @options[:stop_on_error] = true
  end
  opts.on('--poll', 'Check for file changes manually, rather than relying on the OS.',
                    'Only meaningful for --watch.') do
    @options[:poll] = true
  end
  opts.on('-f', '--force', 'Recompile all Sass files, even if the CSS file is newer.',
                           'Only meaningful for --update.') do
    @options[:force] = true
  end
  opts.on('-c', '--check', "Just check syntax, don't evaluate.") do
    require 'stringio'
    @options[:check_syntax] = true
    @options[:output] = StringIO.new
  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('--precision NUMBER_OF_DIGITS', Integer,
          'How many digits of precision to use when outputting decimal numbers. Defaults to 3.') do |precision|
    ::Sass::Script::Number.precision = precision
  end
  opts.on('-q', '--quiet', 'Silence warnings and status messages during compilation.') do
    @options[:for_engine][:quiet] = true
  end
  opts.on('--compass', 'Make Compass imports available and load project configuration.') do
    @options[:compass] = 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 source 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('-r', '--require LIB', 'Require a Ruby library before running Sass.') do |lib|
    require lib
  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 ::Sass::Util.ruby1_8?
    opts.on('-E encoding', 'Specify the default encoding for Sass files.') do |encoding|
      Encoding.default_external = encoding
    end
  end
end