Class: Truncator::UrlParser

Inherits:
Object
  • Object
show all
Defined in:
lib/truncator/url_parser.rb

Constant Summary collapse

SEPARATOR = 
'...'

Class Method Summary collapse

Class Method Details

.shorten_url(uri, truncation_length = 42) ⇒ Object 



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# File 'lib/truncator/url_parser.rb', line 11

def shorten_url(uri, truncation_length = 42)
  begin
    uri = URI(uri)
  rescue URI::InvalidURIError
    uri = uri.sub(/\Ahttp:\/\//, '') # remove http protocol
    return uri.truncate(truncation_length)
  end

  if !uri.ordinary_hostname?
    if uri.query
      uri.query_parameters = [uri.query_parameters.first]
      return uri.to_s + SEPARATOR
    else
      return uri.to_s
    end
  end

  return uri.special_format if uri.special_format.valid_length?(truncation_length)

  if uri.path_blank? && !uri.query
    return uri.special_format.truncate!(truncation_length)
  end

  if uri.query
    return uri.special_format.truncate!(truncation_length)
  else
    if uri.host.valid_length?(truncation_length)
      result = truncate_by_shortest(uri, truncation_length)
      if result
        uri = result
      else
        return uri.special_format.truncate!(truncation_length)
      end
    else
      return uri.special_format.truncate!(truncation_length)
    end
  end

  uri.special_format

rescue Truncator::ExtendedURI::QueryParamWithoutValueError # for ruby <2.1.0 r40460
  return uri.to_s.truncate(truncation_length)
end