Class: FeedProcessorUtils::FeedPostBuilder

Inherits:
Object
  • Object
show all
Defined in:
lib/feed_processor_utils/feed_post_builder.rb

Constant Summary collapse

@@config_file = 
File.join(File.dirname(__FILE__), 'config/feed_post_builder.yml')

Class Method Summary collapse

Class Method Details

.config ⇒ Object 



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# File 'lib/feed_processor_utils/feed_post_builder.rb', line 106

def self.config
  @@config ||= YAML.load(File.read(@@config_file))
end

.dimensions_ok?(dimensions) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/feed_processor_utils/feed_post_builder.rb', line 53

def self.dimensions_ok?(dimensions)
  ratio = (0.5..2.5).cover?(dimensions.first.to_f / dimensions.last.to_f) unless dimensions.last.to_i == 0
  ratio ||= false

  ratio && have_minimum_size?(dimensions)
end

.ensure_absolute(url, host) ⇒ Object 



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# File 'lib/feed_processor_utils/feed_post_builder.rb', line 17

def self.ensure_absolute(url, host)
  url[0] == "/" ? "http://"+ host + url : url 
end

.get_image_dimensions(uri) ⇒ Object 



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# File 'lib/feed_processor_utils/feed_post_builder.rb', line 32

def self.get_image_dimensions(uri)
  match = match_based64?(uri)
  if match
    data = Base64.decode64(uri.split(match[0])[1])
  else
    begin
      file = open(uri)
    rescue => e
      return [0,0]
    end
    data = file.read
  end

  if file && data.encoding.name == "UTF-8"
    NewerImageSize.new(file).size
  else
    ImageSize.new(data).get_size
  end

end

.get_images(item_data, is_news) ⇒ Object 



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# File 'lib/feed_processor_utils/feed_post_builder.rb', line 64

def self.get_images(item_data, is_news)
  image_urls = []
  domain = URI.parse(item_data[:url] || item_data[:id])
  [:og_image, :image].each do |key|
    url = item_data[key]
    if url
      url = ensure_absolute(url.to_s, domain.to_s)
      if have_minimum_size?(get_image_dimensions(url))
        break if image_urls << url
      end
    end
  end
  nominated_images = if item_data[:lazy_image_tags].present?
    item_data[:lazy_image_tags]
  else
    item_data[:images_in_text]
  end
  with_size = nominated_images.map do |url|
    {url: url, dim: get_image_dimensions(url)}
  end
  largest_img = with_size.sort_by do |img|
    dim = img[:dim]
    dim ? dim[0] * dim[1] : 0
  end.last
  if largest_img
    if is_news
      image_urls << largest_img[:url]
    else
      image_urls.unshift(largest_img[:url]) if largest_img[:dim] && dimensions_ok?(largest_img[:dim])
    end
  end
  image_urls
end

.get_videos(item_data) ⇒ Object 



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# File 'lib/feed_processor_utils/feed_post_builder.rb', line 98

def self.get_videos(item_data)
  item_data[:videos_in_text].map do |video|
    video = "http:" + video if video[0..1] == "//" # sometimes the protocol is omitted from video url
    video
  end
end

.have_minimum_size?(dimensions) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/feed_processor_utils/feed_post_builder.rb', line 60

def self.have_minimum_size?(dimensions)
  dimensions.first.to_i >= 300 && dimensions.last.to_i >= 150
end

.longest_content(*strings) ⇒ Object 



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# File 'lib/feed_processor_utils/feed_post_builder.rb', line 25

def self.longest_content(*strings)
  strings.sort_by! do |string|
    string.to_s.gsub(/[\n\r]/,' ').gsub(/&nbsp;/, " ").gsub(/(<\/?[^<>]+>)/,' ').gsub(/\s{2,}/, ' ').gsub(/ / ,' ').split(' ').size
  end
  strings.last
end

.match_based64?(uri) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/feed_processor_utils/feed_post_builder.rb', line 21

def self.match_based64?(uri)
  /data:\w+\/\w+;base64,/.match(uri)
end

.replacements ⇒ Object 



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# File 'lib/feed_processor_utils/feed_post_builder.rb', line 110

def self.replacements
  config[:replacements]
end

.sanitize(text) ⇒ Object 



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# File 'lib/feed_processor_utils/feed_post_builder.rb', line 9

def self.sanitize(text)
  return nil unless text 
  replacements.each do |pattern, replacement|
    text.gsub!(pattern, replacement)
  end
  text
end