Sha256: e6947bf8701c5ba7a0201ab0fe0b4061aa9e70a019b6f08bf66518fd63f35be6
Contents?: true
Size: 1.52 KB
Versions: 59
Compression:
Stored size: 1.52 KB
Contents
# Elsevier provides publically available and linkable sample cover images
# for journals they publish. Thanks Elsevier! This service does nothing
# more than take an ISSN and look for a match from Elsevier.
class ElsevierCover < Service
require 'open-uri'
def service_types_generated
return [ServiceTypeValue[:cover_image]]
end
def initialize(config)
#@base_url = "http://www1.elsevier.com/inca/covers/store/issn/"
@base_url = "http://www.extranet.elsevier.com/inca_covers_store/issn/"
super(config)
end
def handle(request)
issn = request.referent.issn
# We need an ISSN
return request.dispatched(self, true) unless issn
# No hyphens please
issn = issn.gsub(/[^0-9X]/, '')
check_url = @base_url + issn + '.gif'
# does it exist?
if ( url_resolves(check_url) )
request.add_service_response(:service => self,
:service_type_value => ServiceTypeValue[:cover_image] ,
:url => check_url,
:size => "medium" )
end
return request.dispatched(self, true)
end
def url_resolves(url)
uri_obj = URI.parse(url)
response = Net::HTTP.start(uri_obj.host, uri_obj.port) {|http|
http.head(uri_obj.request_uri)
}
if (response.kind_of?( Net::HTTPSuccess ))
return true
elsif ( response.kind_of?(Net::HTTPNotFound))
return false
else
# unexpected condition, raise
response.value
end
end
end
Version data entries
59 entries across 59 versions & 1 rubygems