class Cucumber::FeatureFile

def encoding_for(source)
  encoding = DEFAULT_ENCODING
  source.each_line do |line|
    break unless COMMENT_OR_EMPTY_LINE_PATTERN =~ line
    if ENCODING_PATTERN =~ line
      encoding = $1
      break
    end
  end
  encoding
end

def initialize(uri, source=nil)
  @source = source
  _, @path, @lines = *FILE_COLON_LINE_PATTERN.match(uri)
  if @path
    @lines = @lines.split(':').map { |line| line.to_i }
  else
    @path = uri
  end
end

def parse(configuration_filters, tag_counts)
  filters = @lines || configuration_filters
  builder             = Cucumber::Parser::GherkinBuilder.new(@path)
  filter_formatter    = filters.empty? ? builder : Gherkin::Formatter::FilterFormatter.new(builder, filters)
  tag_count_formatter = Gherkin::Formatter::TagCountFormatter.new(filter_formatter, tag_counts)
  parser              = Gherkin::Parser::Parser.new(tag_count_formatter, true, "root", false)
  begin
    parser.parse(source, @path, 0)
    builder.language = parser.i18n_language
    builder.result
  rescue Gherkin::Lexer::LexingError, Gherkin::Parser::ParseError => e
    e.message.insert(0, "#{@path}: ")
    raise e
  end
end

def source
  @source ||= if @path =~ /^http/
    require 'open-uri'
    open(@path).read
  else
    begin
      source = File.open(@path, Cucumber.file_mode('r', DEFAULT_ENCODING)).read
      encoding = encoding_for(source)
      if(DEFAULT_ENCODING.downcase != encoding.downcase)
        # Read the file again - it's explicitly declaring a different encoding
        source = File.open(@path, Cucumber.file_mode('r', encoding)).read
        source = to_default_encoding(source, encoding)
      end
      source
    rescue Errno::EACCES => e
      e.message << "\nCouldn't open #{File.expand_path(@path)}"
      raise e
    rescue Errno::ENOENT => e
      # special-case opening features, because this could be a new user:
      e.message << ". Please create a #{@path} directory to get started."
      e.extend FixRuby21Bug9285 if Cucumber::RUBY_2_1
      raise e
    end
  end
end

def to_default_encoding(string, encoding)
  if string.respond_to?(:encode)
    string.encode(DEFAULT_ENCODING)
  else
    require 'iconv'
    Iconv.new(DEFAULT_ENCODING, encoding).iconv(string)
  end
end