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Contents
require 'delegate'
require 'active_support/core_ext/object/blank'
require 'active_support/inflector'
require 'link_thumbnailer/parser'
require 'link_thumbnailer/models/website'
require 'link_thumbnailer/scrapers/default/title'
require 'link_thumbnailer/scrapers/opengraph/title'
require 'link_thumbnailer/scrapers/default/description'
require 'link_thumbnailer/scrapers/opengraph/description'
require 'link_thumbnailer/scrapers/default/images'
require 'link_thumbnailer/scrapers/opengraph/images'
require 'link_thumbnailer/scrapers/default/videos'
require 'link_thumbnailer/scrapers/opengraph/videos'
require 'link_thumbnailer/scrapers/default/favicon'
require 'link_thumbnailer/scrapers/opengraph/favicon'
module LinkThumbnailer
class Scraper < ::SimpleDelegator
attr_reader :document, :source, :url, :config, :website
def initialize(source, url)
@source = source
@url = url
@config = ::LinkThumbnailer.page.config
@document = parser.call(source)
@website = ::LinkThumbnailer::Models::Website.new
@website.url = url
super(config)
end
def call
config.attributes.each do |name|
scrapers.each do |scraper_prefix|
scraper_class(scraper_prefix, name).new(document, website).call(name.to_s)
break unless website.send(name).blank?
end
end
website
end
private
def scrapers
[
'::LinkThumbnailer::Scrapers::Opengraph',
'::LinkThumbnailer::Scrapers::Default'
]
end
def scraper_class(prefix, name)
name = name.to_s.camelize
"#{prefix}::#{name}".constantize
rescue NameError
raise ::LinkThumbnailer::ScraperInvalid, "scraper named '#{prefix}::#{name}' does not exists."
end
def parser
::LinkThumbnailer::Parser.new
end
end
end
Version data entries
12 entries across 12 versions & 1 rubygems