Module: SL::URL

Included in:
SL
Defined in:
lib/searchlink/url.rb

Class Method Summary collapse

Class Method Details

.amazon_affiliatize(url, amazon_partner) ⇒ Object 



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# File 'lib/searchlink/url.rb', line 90

def amazon_affiliatize(url, amazon_partner)
  return url if amazon_partner.nil? || amazon_partner.empty?

  unless url =~ %r{https?://(?<subdomain>.*?)amazon.com/(?:(?<title>.*?)/)?(?<type>[dg])p/(?<id>[^?]+)}
    return [url, '']
  end

  m = Regexp.last_match
  sd = m['subdomain']
  title = m['title'].gsub(/-/, ' ')
  t = m['type']
  id = m['id']
  ["https://#{sd}amazon.com/#{t}p/#{id}/?ref=as_li_ss_tl&ie=UTF8&linkCode=sl1&tag=#{amazon_partner}", title]
end

.only_url?(input) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/searchlink/url.rb', line 48

def only_url?(input)
  input =~ %r{(?i)^((http|https)://)?([\w\-_]+(\.[\w\-_]+)+)([\w\-.,@?^=%&amp;:/~+#]*[\w\-@^=%&amp;/~+#])?$}
end

.ref_title_for_url(url) ⇒ Object 



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# File 'lib/searchlink/url.rb', line 52

def ref_title_for_url(url)
  url = URI.parse(url) if url.is_a?(String)

  parts = url.hostname.split(/\./)
  domain = if parts.count > 1
             parts.slice(-2, 1).join('')
           else
             parts.join('')
           end

  path = url.path.split(%r{/}).last
  if path
    path.gsub!(/-/, ' ').gsub!(/\.\w{2-4}$/, '')
  else
    path = domain
  end

  path.length > domain.length ? path : domain
end

.title(url) ⇒ Object 



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# File 'lib/searchlink/url.rb', line 105

def title(url)
  title = nil

  ## Gather proving too inexact
  # gather = false
  # ['/usr/local/bin', '/opt/homebrew/bin'].each do |root|
  #   if File.exist?(File.join(root, 'gather')) && File.executable?(File.join(root, 'gather'))
  #     gather = File.join(root, 'gather')
  #     break
  #   end
  # end

  # if gather
  #   cmd = %(#{gather} --title-only '#{url.strip}' --fallback-title 'Unknown')
  #   title = SL::Util.exec_with_timeout(cmd, 15)
  #   if title
  #     title = title.strip.gsub(/\n+/, ' ').gsub(/ +/, ' ')
  #     title.remove_seo!(url) if SL.config['remove_seo']
  #     return title.remove_protocol
  #   else
  #     SL.add_error('Error retrieving title', "Gather timed out on #{url}")
  #     SL.notify('Error retrieving title', 'Gather timed out')
  #   end
  # end

  begin
    page = Curl::Html.new(url)

    title = page.title || nil

    if title.nil? || title =~ /^\s*$/
      SL.add_error('Title not found', "Warning: missing title for #{url.strip}")
      title = url.gsub(%r{(^https?://|/.*$)}, '').gsub(/-/, ' ').strip
    else
      title = title.gsub(/\n/, ' ').gsub(/\s+/, ' ').strip # .sub(/[^a-z]*$/i,'')
      title.remove_seo!(url) if SL.config['remove_seo']
    end
    title.gsub!(/\|/, '—')
    title.remove_seo!(url.strip) if SL.config['remove_seo']
    title.remove_protocol
  rescue StandardError
    SL.add_error('Error retrieving title', "Error determining title for #{url.strip}")
    warn "Error retrieving title for #{url.strip}"
    url.remove_protocol
  end
end

.url?(input) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/searchlink/url.rb', line 44

def url?(input)
  input =~ %r{^(#.*|https?://\S+|/\S+|\S+/|[^!]\S+\.\S+)(\s+".*?")?$}
end

.url_to_link(url, type) ⇒ Object 



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# File 'lib/searchlink/url.rb', line 72

def url_to_link(url, type)
  input = url.dup

  if only_url?(input)
    input.sub!(%r{(?mi)^(?!https?://)(.*?)$}, 'https://\1')
    url = URI.parse(input.downcase)

    title = if type == :ref_title
              ref_title_for_url(url)
            else
              title(url.to_s) || input.sub(%r{^https?://}, '')
            end

    return [url.to_s, title] if url.hostname
  end
  false
end

.valid_link?(uri_str, limit = 5) ⇒ Boolean

Validates that a link exists and returns 200

Returns:

  • (Boolean) 


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# File 'lib/searchlink/url.rb', line 5

def valid_link?(uri_str, limit = 5)
  return false unless uri_str

  SL.notify('Validating', uri_str)
  return false if limit.zero?

  url = URI(uri_str)
  return true unless url.scheme

  url.path = '/' if url.path == ''
  # response = Net::HTTP.get_response(URI(uri_str))
  response = false

  Net::HTTP.start(url.host, url.port, use_ssl: url.scheme == 'https') do |http|
    response = http.request_head(url.path)
  end

  case response
  when Net::HTTPMethodNotAllowed, Net::HTTPServiceUnavailable
    unless /amazon\.com/ =~ url.host
      SL.add_error('link validation', "Validation blocked: #{uri_str} (#{e})")
    end
    SL.notify('Error validating', uri_str)
    true
  when Net::HTTPSuccess
    true
  when Net::HTTPRedirection
    location = response['location']
    valid_link?(location, limit - 1)
  else
    SL.notify('Error validating', uri_str)
    false
  end
rescue StandardError => e
  SL.notify('Error validating', uri_str)
  SL.add_error('link validation', "Possibly invalid => #{uri_str} (#{e})")
  true
end