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CodeRay

About

CodeRay is a Ruby library for syntax highlighting.

You put your code in, and you get it back colored; Keywords, strings, floats, comments – all in different colors. And with line numbers.

Syntax Highlighting…

makes code easier to read and maintain
lets you detect syntax errors faster
helps you to understand the syntax of a language
looks nice
is what everybody wants to have on their website
solves all your problems and makes the girls run after you

Installation

gem install coderay

Dependencies

CodeRay needs Ruby 1.8.7+ or 1.9.2+. It also runs on Rubinius and JRuby.

Example Usage

require 'coderay'

html = CodeRay.scan("puts 'Hello, world!'", :ruby).div(:line_numbers => :table)

Documentation

See http://coderay.rubychan.de/doc/.

Credits

Special Thanks to

licenser (Heinz N. Gies) for ending my QBasic career, inventing the Coder project and the input/output plugin system. CodeRay would not exist without him.
bovi (Daniel Bovensiepen) for helping me out on various occasions.

Thanks to

Caleb Clausen for writing RubyLexer and lots of very interesting mail traffic
birkenfeld (Georg Brandl) and mitsuhiku (Arnim Ronacher) for PyKleur, now Pygments. You guys rock!
Jamis Buck for writing Syntax — I got some useful ideas from it.
Doug Kearns and everyone else who worked on ruby.vim – it not only helped me coding CodeRay, but also gave me a wonderful target to reach for the Ruby scanner.
everyone who uses CodeBB on http://www.rubyforen.de and http://www.python-forum.de
iGEL, magichisoka, manveru, WoNáDo and everyone I forgot from rubyforen.de
Dethix from ruby-mine.de
zickzackw
Dookie (who is no longer with us…) and Leonidas from http://www.python-forum.de
Andreas Schwarz for finding out that CaseIgnoringWordList was not case ignoring! Such things really make you write tests.
closure for the first version of the Scheme scanner.
Stefan Walk for the first version of the JavaScript and PHP scanners.
Josh Goebel for another version of the JavaScript scanner, a SQL and a Diff scanner.
Jonathan Younger for pointing out the licence confusion caused by wrong LICENSE file.
Jeremy Hinegardner for finding the shebang-on-empty-file bug in FileType.
Charles Oliver Nutter and Yehuda Katz for helping me benchmark CodeRay on JRuby.
Andreas Neuhaus for pointing out a markup bug in coderay/for_redcloth.
0xf30fc7 for the FileType patch concerning Delphi file extensions.
The folks at redmine.org – thank you for using and fixing CodeRay!
Keith Pitt for his SQL scanners
Rob Aldred for the terminal encoder
Trans for pointing out $DEBUG dependencies
Flameeyes for finding that Term::ANSIColor was obsolete
matz and all Ruby gods and gurus
The inventors of: the computer, the internet, the true color display, HTML & CSS, VIM, Ruby, pizza, microwaves, guitars, scouting, programming, anime, manga, coke and green ice tea.

Where would we be without all those people?

Created using

Ruby
Chihiro (my Sony VAIO laptop); Henrietta (my old MacBook); Triella, born Rico (my new MacBook); as well as Seras and Hikari (my PCs)
RDE, VIM and TextMate
Subversion
Redmine
Firefox, Firebug, Safari, and Thunderbird
RubyGems and Rake
TortoiseSVN using Apache via XAMPP
RDoc (though I’m quite unsatisfied with it)
Microsoft Windows (yes, I confess!) and MacOS X
GNUWin32, MinGW and some other tools to make the shell under windows a bit less useless
Term::ANSIColor
PLEAC code examples
Github
Travis CI

Free

As you can see, CodeRay was created under heavy use of free software.
So CodeRay is also free.
If you use CodeRay to create software, think about making this software free, too.
Thanks :)