class OEmbed::ProviderDiscovery

instance about a URL for which a Provider didn’t previously exist.
Uses oEmbed Discover to generate a new Provider

def discover_provider(url, options = {})

:max_redirects:: the number of times this request will follow 3XX redirects before throwing an error. Default: 4
:timeout:: specifies the timeout (in seconds) for the http request.
:format:: If given only discover endpoints for the given format. If not format is given, use the first available format found.
The options Hash recognizes the following keys:

performed on the given url.
Returns a new Provider instance based on information from oEmbed discovery 
def discover_provider(url, options = {})
  uri = URI.parse(url)
  res = http_get(uri, options)
  format = options[:format]
  if format.nil? || format == :json
    provider_endpoint ||= /<link[^>]*href=['"]*([^\s'"]+)['"]*[^>]*application\/json\+oembed[^>]*>/.match(res)[1] rescue nil
    provider_endpoint ||= /<link[^>]*application\/json\+oembed[^>]*href=['"]*([^\s'"]+)['"]*[^>]*>/.match(res)[1] rescue nil
    format ||= :json if provider_endpoint
  end
  if format.nil? || format == :xml
    # {The specification}[http://oembed.com/#section4] says XML discovery should have
    # type="text/xml+oembed" but some providers use type="application/xml+oembed"
    provider_endpoint ||= /<link[^>]*href=['"]*([^\s'"]+)['"]*[^>]*(application|text)\/xml\+oembed[^>]*>/.match(res)[1] rescue nil
    provider_endpoint ||= /<link[^>]*(application|text)\/xml\+oembed[^>]*href=['"]*([^\s'"]+)['"]*[^>]*>/.match(res)[2] rescue nil
    format ||= :xml if provider_endpoint
  end
  begin
    provider_endpoint = URI.parse(provider_endpoint)
    provider_endpoint.query = nil
    provider_endpoint = provider_endpoint.to_s
  rescue URI::Error
    raise OEmbed::NotFound, url
  end
  Provider.new(provider_endpoint, format || OEmbed::Formatter.default)
end

def get(url, query={})

The query parameter will be passed to both discover_provider and Provider#get
Discover the Provider for the given url, then call Provider#get on that provider. 
def get(url, query={})
  provider = discover_provider(url, query)
  provider.get(url, query)
end

def raw(url, query={})

Deprecated:
  • *Note*: This method will be made private in the future.
def raw(url, query={})
  provider = discover_provider(url, query)
  provider.raw(url, query)
end