Ruby library for syntax highlighting

 CodeRay is a Ruby library that can scan an input file or text in a web
 page and encode it as syntax highlighted HTML output.
 .
 CodeRay supports many input languages including: C, C++, CSS, Delphi, diff,
 Groovy, HTML, RHTML (Erb+HTML), Nitro-XHTML, Java, JavaScript, JSON, PHP,
 Python, Ruby, SQL and YAML.
 .
 CodeRay can output to HTML, JSON, XML, Yaml.