Contents

require 'RMagick'

module LinkThumbnailer

  class ImgParser

    def initialize(fetcher, img_url_filter)
      @fetcher = fetcher
      @img_url_filters = [*img_url_filter]
    end

    def parse(img_urls)
      @img_url_filters.each do |filter|
        img_urls.delete_if { |i| filter.reject?(i) }
      end

      imgs = []
      count = 0
      img_urls.each { |i|
        break if count >= LinkThumbnailer.configuration.limit
        img = parse_one(i)
        next unless img
        img.extend LinkThumbnailer::ImgComparator
        imgs << img
        count += 1
      }

      imgs.sort! unless imgs.count <= 1

      imgs.first(LinkThumbnailer.configuration.top)
    end

    def parse_one(img_url)
      img_data = @fetcher.fetch(img_url)
      img = Magick::ImageList.new.from_blob(img_data).extend(
        LinkThumbnailer::WebImage
      )
      img.source_url = img_url
      img
    rescue Exception
      nil
    end

  end

end

Version data entries

2 entries across 2 versions & 1 rubygems

Version	Path
link_thumbnailer-1.0.5	lib/link_thumbnailer/img_parser.rb
link_thumbnailer-1.0.4	lib/link_thumbnailer/img_parser.rb