Module: Feedisco::Utilities

Included in:
Feedisco
Defined in:
lib/feedisco/utilities.rb

Instance Method Summary collapse

Instance Method Details

#complete_extracted_url(extracted_url, page_url) ⇒ Object

Complete extracted_url with page_url:

- if extracted_url is relative, completes it with the protocol,
  host and path from page_url (page_url is expected to be absolute!)
- just returns extracted_url if it is absolute.



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# File 'lib/feedisco/utilities.rb', line 28

def complete_extracted_url(extracted_url, page_url)
  extracted_uri = URI.parse(extracted_url)
  page_uri = URI.parse(page_url)

  if extracted_uri.absolute?
    extracted_url 

  else
    raise ArgumentError.new('page_url must be absolute if extracted_url isn\'t!') unless page_uri.absolute?

    if extracted_url =~ %r{\A/}
      # Starts with '/', root of page_url's domain
      "#{page_uri.scheme}://#{page_uri.host}#{extracted_url}"
    else
      "#{page_uri.scheme}://#{page_uri.host}#{page_uri.path}/#{extracted_url}"
    end
  end
end

#harmonize_url(url) ⇒ Object

Check the specified URL protocol. To be considered as a valid feed URL, it must match either ‘feed’, ‘http’, or ‘https’, or be nil. If it does, the url is returned with ‘http’ or ‘https’ protocol (replacing nil and ‘feed’ ones). Else, it returns nil.



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# File 'lib/feedisco/utilities.rb', line 6

def harmonize_url(url)
  url_uri = URI.parse(url)

  case url_uri.scheme
  when nil
    "http://#{url}"

  when 'feed'
    url.sub(%r{feed://}, 'http://')
  
  when %r{http(s)?}
    url

  else
    nil
  end
end