Nokogiri (鋸) is an HTML, XML, SAX, and Reader parser. Among Nokogiri's many features is the ability to search documents via XPath or CSS3 selectors.
XML is like violence - if it doesn’t solve your problems, you are not using enough of it.
XPath support for document searching
CSS3 selector support for document searching
Nokogiri parses and searches XML/HTML very quickly, and also has correctly implemented CSS3 selector support as well as XPath support.
Here is a speed test:
The Nokogiri mailing list is available here:
The bug tracker is available here:
The IRC channel is #nokogiri on freenode.
require 'nokogiri' require 'open-uri' # Get a Nokogiri::HTML:Document for the page we’re interested in... doc = Nokogiri::HTML(open('http://www.google.com/search?q=tenderlove')) # Do funky things with it using Nokogiri::XML::Node methods... #### # Search for nodes by css doc.css('h3.r a.l').each do |link| puts link.content end #### # Search for nodes by xpath doc.xpath('//h3/a[@class="l"]').each do |link| puts link.content end #### # Or mix and match. doc.search('h3.r a.l', '//h3/a[@class="l"]').each do |link| puts link.content end
ruby 1.8 or 1.9
sudo gem install nokogiri
Developing Nokogiri requires racc and rexical.
(The MIT License)
Copyright © 2008 - 2009:
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the 'Software'), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.