class Rouge::Guessers::Source

def filter(lexers)
  # don't bother reading the input if
  # we've already filtered to 1
  return lexers if lexers.size == 1
  # If we're filtering against *all* lexers, we only use confident return
  # values from analyze_text.  But if we've filtered down already, we can trust
  # the analysis more.
  threshold = lexers.size < 10 ? 0 : 0.5
  source_text = case @source
  when String
    @source
  when ->(s){ s.respond_to? :read }
    @source.read
  else
    raise 'invalid source'
  end
  Lexer.assert_utf8!(source_text)
  source_text = TextAnalyzer.new(source_text)
  collect_best(lexers, threshold: threshold) do |lexer|
    next unless lexer.methods(false).include? :analyze_text
    lexer.analyze_text(source_text)
  end
end

def initialize(source)
  @source = source
end