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= CodeRay
:url-coderay: http://coderay.rubychan.de/
:url-coderay-gem: https://rubygems.org/gems/coderay
{url-coderay}[CodeRay^] is an encoding-aware, syntax highlighter that supports the languages listed below.
[%autowidth,cols="4*",grid=none,frame=none]
|===
| C
| C++
| Clojure
| CSS
| Delphi
| diff
| ERB
| Go
| Groovy
| HAML
| HTML
| Java
| JavaScript
| JSON
| Lua
| PHP
| Python
| Ruby
| Sass
| SQL
| Taskpaper
| XML
| YAML
|
|===
== Install CodeRay
To use CodeRay with Asciidoctor, you need the {url-coderay-gem}[coderay gem^].
You can use one of the following methods to install CodeRay.
Install using gem (all systems)::
+
$ gem install coderay
Install using apt-get (Debian-based systems)::
+
$ sudo apt-get install ruby-coderay
Install using dnf (Fedora-based systems)::
+
$ sudo dnf install rubygem-coderay
== Activate CodeRay
Once you've installed the gem, assign the `coderay` value to the `source-highlighter` attribute in the document header to activate it.
[,asciidoc]
----
:source-highlighter: coderay
----
== CodeRay attributes
You can further customize the source block output with additional CodeRay attributes.
coderay-css::
Controls what method is used for applying CSS to the tokens.
Can be `class` or `style`.
Default: `class`.
coderay-linenums-mode::
Controls how line numbers are laid out.
Can be `table` or `inline`.
If line wrapping is enabled on preformatted blocks (i.e., `prewrap`), and you want to use line numbering on source blocks, you must set the value of this attribute to `inline` in order for the numbers to line up properly with their target lines.
Default: `table`.
.Customizing a source block with CodeRay line numbers
[source,asciidoc]
....
:source-highlighter: coderay
:coderay-linenums-mode: inline
[%linenums,ruby]
----
ORDERED_LIST_KEYWORDS = {
'loweralpha' => 'a',
'lowerroman' => 'i',
'upperalpha' => 'A',
'upperroman' => 'I'
#'lowergreek' => 'a'
#'arabic' => '1'
#'decimal' => '1'
}
----
....
See the xref:html-backend:source-highlighting-stylesheets.adoc#coderay[CodeRay stylesheet section] to learn about the `coderay-css` attribute.
////
Note: I'm not getting this to work. Need to come back and do some quality assurance.
////
|
