Module: Onebox::Helpers
- Defined in:
- lib/onebox/helpers.rb
Defined Under Namespace
Classes: DownloadTooLarge
Class Method Summary collapse
- .blank?(value) ⇒ Boolean
- .clean(html) ⇒ Object
- .click_to_scroll_div(width = 690, height = 400) ⇒ Object
- .fetch_content_length(location) ⇒ Object
- .fetch_response(location, limit = 5, domain = nil, headers = nil) ⇒ Object
- .normalize_url_for_output(url) ⇒ Object
- .pretty_filesize(size) ⇒ Object
- .symbolize_keys(hash) ⇒ Object
- .title_attr(meta) ⇒ Object
- .truncate(string, length = 50) ⇒ Object
Class Method Details
.blank?(value) ⇒ Boolean
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# File 'lib/onebox/helpers.rb', line 122 def self.blank?(value) if value.respond_to?(:blank?) value.blank? else value.respond_to?(:empty?) ? !!value.empty? : !value end end |
.clean(html) ⇒ Object
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# File 'lib/onebox/helpers.rb', line 17 def self.clean(html) html.gsub(/<[^>]+>/, ' ').gsub(/\n/, '') end |
.click_to_scroll_div(width = 690, height = 400) ⇒ Object
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# File 'lib/onebox/helpers.rb', line 118 def self.click_to_scroll_div(width = 690, height = 400) "<div style=\"background:transparent;position:relative;width:#{width}px;height:#{height}px;top:#{height}px;margin-top:-#{height}px;\" onClick=\"style.pointerEvents='none'\"></div>" end |
.fetch_content_length(location) ⇒ Object
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# File 'lib/onebox/helpers.rb', line 79 def self.fetch_content_length(location) uri = URI(location) Net::HTTP.start(uri.host, uri.port, use_ssl: uri.is_a?(URI::HTTPS)) do |http| http.open_timeout = Onebox..connect_timeout http.read_timeout = Onebox..timeout if uri.is_a?(URI::HTTPS) http.use_ssl = true http.verify_mode = OpenSSL::SSL::VERIFY_NONE end http.request_head([uri.path, uri.query].join("?")) do |response| code = response.code.to_i unless code === 200 || response.header['content-length'].blank? return nil end return response.header['content-length'] end end end |
.fetch_response(location, limit = 5, domain = nil, headers = nil) ⇒ Object
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# File 'lib/onebox/helpers.rb', line 21 def self.fetch_response(location, limit=5, domain=nil, headers=nil) limit = Onebox..redirect_limit if limit > Onebox..redirect_limit raise Net::HTTPError.new('HTTP redirect too deep', location) if limit == 0 uri = URI(location) uri = URI("#{domain}#{location}") if !uri.host result = StringIO.new Net::HTTP.start(uri.host, uri.port, use_ssl: uri.is_a?(URI::HTTPS)) do |http| http.open_timeout = Onebox..connect_timeout http.read_timeout = Onebox..timeout if uri.is_a?(URI::HTTPS) http.use_ssl = true http.verify_mode = OpenSSL::SSL::VERIFY_NONE end headers ||= {} if Onebox..user_agent && !headers['User-Agent'] headers['User-Agent'] = Onebox..user_agent end request = Net::HTTP::Get.new(uri.request_uri, headers) start_time = Time.now size_bytes = Onebox..max_download_kb * 1024 http.request(request) do |response| if = response.get_fields('set-cookie') header = { 'cookie' => .join } end header = nil unless header.is_a? Hash code = response.code.to_i unless code === 200 response.error! unless [301, 302].include?(code) return fetch_response( response['location'], limit - 1, "#{uri.scheme}://#{uri.host}", header ) end response.read_body do |chunk| result.write(chunk) raise DownloadTooLarge.new if result.size > size_bytes raise Timeout::Error.new if (Time.now - start_time) > Onebox..timeout end return result.string end end end |
.normalize_url_for_output(url) ⇒ Object
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# File 'lib/onebox/helpers.rb', line 138 def self.normalize_url_for_output(url) return "" unless url url = url.dup # expect properly encoded url, remove any unsafe chars url.gsub!("'", "'") url.gsub!('"', """) url.gsub!(/[^\w\-`.~:\/?#\[\]@!$&'\(\)*+,;=%]/, "") url end |
.pretty_filesize(size) ⇒ Object
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# File 'lib/onebox/helpers.rb', line 100 def self.pretty_filesize(size) conv = [ 'B', 'KB', 'MB', 'GB', 'TB', 'PB', 'EB' ]; scale = 1024; ndx=1 if( size < 2*(scale**ndx) ) then return "#{(size)} #{conv[ndx-1]}" end size=size.to_f [2,3,4,5,6,7].each do |i| if (size < 2*(scale**i)) then return "#{'%.2f' % (size/(scale**(i-1)))} #{conv[i-1]}" end end ndx=7 return "#{'%.2f' % (size/(scale**(ndx-1)))} #{conv[ndx-1]}" end |
.symbolize_keys(hash) ⇒ Object
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# File 'lib/onebox/helpers.rb', line 6 def self.symbolize_keys(hash) return {} if hash.nil? hash.inject({}){|result, (key, value)| new_key = key.is_a?(String) ? key.to_sym : key new_value = value.is_a?(Hash) ? symbolize_keys(value) : value result[new_key] = new_value result } end |
.title_attr(meta) ⇒ Object
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# File 'lib/onebox/helpers.rb', line 134 def self.title_attr() ( && !blank?([:title])) ? "title='#{[:title]}'" : "" end |
.truncate(string, length = 50) ⇒ Object
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# File 'lib/onebox/helpers.rb', line 130 def self.truncate(string, length = 50) string.size > length ? string[0...(string.rindex(" ", length)||length)] + "..." : string end |