HTML Filter library can be used to sanitize and sterilize HTML. A good idea if you let users submit HTML in comments, for instance.
This library also include CSSFilter. The CSSFilter class will clean-up a cascading style sheet. It can be used to remove whitespace and most importantly remove URLs.
Based on well-worn PHP library.
Regular expression based filtering.
Very efficient for small snippets, like blog comments.
Pure-Ruby and no dependencies.
Also has library to clean and compact cascading stylesheets.
Via the class.
html = "<b>hello</b>" HTMLFilter.new(options).filter(html)
Or using the String extension.
html.html_filter(options) #=> "<b>hello</b>"
See API documentation for more information.
$ gem install htmlfilter
HTMLFilter is hosted on GitHub.
HTMLFilter is a Rubyworks project.
Thanks to Jang Kim for adding support for single quoted attributes.
HtmlFilter is a port of lib_filter.php, v1.15 by Cal Henderson <firstname.lastname@example.org>. This code is licensed under a Creative Commons Attribution-ShareAlike 2.5 License. See creativecommons.org/licenses/by-sa/2.5/.
Copyright © 2009 Thomas Sawyer, Rubyworks (BSD-2)
Copyright © 2007 Cal Henderson (CC-BY-SA)
See COPYING.rdoc for details.