class Sass::Exec::SassConvert

def common_options(opts)
  opts.separator ''
  opts.separator 'Common Options:'
  opts.on('-F', '--from FORMAT',
    'The format to convert from. Can be css, scss, sass.',
    'By default, this is inferred from the input filename.',
    'If there is none, defaults to css.') do |name|
    @options[:from] = name.downcase.to_sym
    raise "sass-convert no longer supports LessCSS." if @options[:from] == :less
    unless [:css, :scss, :sass].include?(@options[:from])
      raise "Unknown format for sass-convert --from: #{name}"
    end
  end
  opts.on('-T', '--to FORMAT',
    'The format to convert to. Can be scss or sass.',
    'By default, this is inferred from the output filename.',
    'If there is none, defaults to sass.') do |name|
    @options[:to] = name.downcase.to_sym
    unless [:scss, :sass].include?(@options[:to])
      raise "Unknown format for sass-convert --to: #{name}"
    end
  end
  opts.on('-i', '--in-place',
    'Convert a file to its own syntax.',
    'This can be used to update some deprecated syntax.') do
    @options[:in_place] = true
  end
  opts.on('-R', '--recursive',
      'Convert all the files in a directory. Requires --from and --to.') do
    @options[:recursive] = true
  end
  opts.on("-?", "-h", "--help", "Show this help message.") do
    puts opts
    exit
  end
  opts.on("-v", "--version", "Print the Sass version.") do
    puts("Sass #{Sass.version[:string]}")
    exit
  end
end