Module: ImageUrlLoader

Defined in:
lib/asker/loader/image_url_loader.rb

Overview

Search URL images on Internet Methods:

  • load - Accept String or an Array with the desired search

  • sanitize_string - Clean URL string

  • sanitize_array - Clean URL Array

Class Method Summary collapse

Class Method Details

.load(input = []) ⇒ Object

Search “input” images on Google and return URL



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# File 'lib/asker/loader/image_url_loader.rb', line 12

def self.load(input = [])
  filters = []
  if input.instance_of? String
    filters += sanitize_string(input.clone)
  elsif input.instance_of? Array
    filters = sanitize_array(input.clone)
  else
    Logger.error "ImageUrlLoader: Unknown type (#{input.class})"
    exit 1
  end
  # Search Image URLs from Google site, selected by <filters>
  search_url = "https://www.google.es/search?q="
  search_url << filters.flatten.join("+").to_s
  search_url << "&source=lnms&tbm=isch&sa=X&ved=2ahUKEwj_g8Wfst7nAhWpzoUKHf_wDbsQ_AUoAnoECBMQBA&biw=1280&bih=591"
  image_urls = []
  begin
    uri = URI.parse(search_url)
    response = Net::HTTP.get_response(uri)

    r = response.body.split(" ")
    r.each do |line|
      if line.include? 'src="https'
        image_urls << line.delete('"')[4, line.size]
      end
    end
  rescue
    Logger.warn "ImageUrlLoader: Problems with URL (#{search_url})"
    Logger.warn "                (a) Check Internet connections"
    Logger.warn "                (b) Ensure URL is well formed"
  end
  image_urls
end

.sanitize_array(input) ⇒ Object 



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# File 'lib/asker/loader/image_url_loader.rb', line 57

def self.sanitize_array(input)
  input.map { |i| sanitize_string(i) }
end

.sanitize_string(input) ⇒ Object 



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# File 'lib/asker/loader/image_url_loader.rb', line 45

def self.sanitize_string(input)
  text = input.dup
  r = [
    %w[á a], %w[é e], %w[í i], %w[ó o], %w[ú u], %w[ñ n],
    %w[Á A], %w[É E], %w[Í I], %w[Ó O], %w[Ú U], %w[Ñ N]
  ]
  r.each { |item| text.gsub!(item[0], item[1]) }
  r = %w[- _ , "]
  r.each { |item| text.gsub!(item, " ") }
  text.split(" ")
end